JP2014099159A - Front plate for touch panel, display device including the plate, and integrated sensor substrate comprising front plate for touch panel and touch panel sensor - Google Patents

Abstract

The reflectance of a frame portion of a front plate of a touch panel sensor is reduced, and the black color of the frame portion can be brought close to the black color when the display portion of the display device is set to black display. In addition, infrared communication of the infrared communication unit is realized without providing an infrared communication window having an infrared transmission film in the frame portion. This prevents an increase in the number of steps and manufacturing cost, and also eliminates the inconvenience due to the level difference caused by forming the infrared transmission film on the frame portion.
A front plate is provided with a frame portion that is formed on a peripheral portion on one surface thereof and divides a display area of a predetermined shape, the front plate is made of a transparent material, and there are two or more types of frame portions. (A) a first light-shielding layer formed on the front plate side, which is a pseudo black layer having a transmittance of light having a wavelength of 400 nm to 750 nm and a light transmittance of 30% or less, and (A) a first The optical density (OD value) is 2 or more and (B) a laminated structure of the second light shielding layer.
[Selection] Figure 3

Description

  The present invention relates to a front panel for a touch panel for a display device, and more particularly to a front panel for a touch panel having a frame portion at the peripheral edge.

  In recent years, a touch panel has been adopted as an operation unit of an electronic device such as a mobile phone or a portable information terminal. The touch panel is configured by bonding a position input device capable of detecting a contact position such as a finger on a display screen of a display device such as a liquid crystal panel or an organic EL (Electro-Luminescence). The touch panel system is roughly classified into a resistance film type, a capacitance type, an optical type, and an ultrasonic type, and each has a merit / demerit, and is used properly according to the application. The capacitance type further includes a surface type and a projection type. A projected capacitive touch panel includes a plurality of electrodes arranged in a grid in the X and Y directions, is capable of multi-touch, and is currently spreading rapidly.

  There are a film type and a glass type in the projected capacitive touch panel sensor substrate. The film type is lightweight, hard to break, inexpensive to manufacture, and flexible, so it has the merit that it is easy to remove bubbles when bonding with other display devices and cover glass, but the light transmission of the film The rate is lower than that of glass, and the positional accuracy of the wiring pattern formed on the film is inferior to that of glass. Due to the difference in sex, there is a problem that it looks worse than the glass type. For small products such as smart phones and tablet computers that require high definition and low power consumption, glass types are often used, such as TVs that require low cost and easy productivity such as bonding. Many film types are used for medium and large products.

  The projected capacitive touch panel sensor substrate generally has a five-layer structure, that is, metal wiring, two transparent electrodes for X and Y directions, an interlayer insulating layer between two transparent electrodes, It consists of a protective layer. In addition, a single-sided structure in which two transparent electrode layers are formed on one side of a glass substrate by forming an interlayer insulating layer with an organic film, and the glass substrate is also used as an interlayer insulating layer, and the two transparent electrode layers are made of glass. It is roughly divided into two types of double-sided structures formed separately on both sides.

  Here, it is common for a display such as a mobile phone to employ a structure in which a front plate (cover glass) is provided on the outermost surface (see, for example, Patent Document 1). The cover glass is formed with a frame portion made of a highly light-shielding material for concealing peripheral wiring and the like. Various colors and patterns can be applied to the frame portion according to the design of the device. When a color or pattern is applied to the frame portion, the frame portion is generally formed by screen printing. However, when a black frame portion is formed, a black matrix (hereinafter referred to as “BM”) of a color filter is formed. Since a black frame with high resistance can be accurately formed on a glass substrate using a BM manufacturing process using a black photosensitive composition, a photolithographic method (hereinafter referred to as “photolitho”) is generally widely used. Used (see, for example, Patent Document 2).

Generally, a material in which carbon or titanium having high concealability is dispersed as a pigment is used as the ink or resist used when forming the black frame portion. Carbon and titanium dispersed materials generally have a low volume resistivity and a high relative dielectric constant. Therefore, when used as a material for a front plate used in combination with a projected capacitive touch panel, detection sensitivity characteristics May be affected. On the other hand, a material whose volume resistivity is increased to 1 × 10 ¹¹ Ω · cm by coating carbon with resin is also used, which is suitable for combination with a projected capacitive touch panel. It is used.

  On the other hand, mobile phones and the like are equipped with an infrared communication unit for infrared communication with other mobile phones and are generally arranged below the area where the frame portion of the front plate is located (inside the mobile phone or the like). Is done. Since the frame portion is located outside the display area and is configured to be larger than the display device, a space for arranging the infrared communication portion can be provided below the frame portion.

  FIGS. 18A and 18B show an example of a cover glass for a touch panel used in a conventional mobile phone or the like. FIG. 18A is a cross-sectional view, and FIG. 18B is a plan view. Moreover, the dashed-two dotted line shown in FIG.18 (b) represents the cutting position of sectional drawing of Fig.18 (a).

  As shown in FIGS. 18A and 18B, a rectangular frame-shaped frame portion 103 is formed on the cover glass 102, and the inside of the frame portion 103 is a display area 110. As described above, since the frame portion 103 is formed of a material having high light shielding properties, visible light and infrared rays are not transmitted as they are. Therefore, an opening in which no light shielding material is formed is provided in the frame portion 103, and the infrared communication window 140 and the proximity sensor window 150 are formed as shown in FIGS. 18 (a) and 18 (b).

  An infrared communication unit (not shown) performs infrared transmission / reception via the infrared communication window 140. Further, a proximity sensor (not shown) senses that an object is approaching through the proximity sensor window 150, such as when an ear is approaching, and saves power by turning off the display unit. Here, as shown in FIGS. 18A and 18B, in the infrared communication window 140, an infrared transmission film 141 is formed on the infrared communication window 140 and the surrounding area by screen printing or the like. This is because the infrared ray transmitting film 141 blocks visible light entering from the infrared communication window 140 and transmits infrared rays for infrared communication. Further, in the proximity sensor window 150, a visible region semi-transmissive film (not shown) is formed by screen printing or the like in the proximity sensor window 150 and the surrounding area.

  However, when a material in which carbon or titanium is dispersed as a pigment in the frame portion is used, since the refractive index of these pigments is generally as high as 1.9 or more, the refractive index of the frame portion also increases, and the glass substrate The reflectivity at the interface with becomes higher. For this reason, the black frame portion of a mobile phone or the like is likely to reflect external light or to be reflected, resulting in a display device with poor display quality. In addition to the high reflectivity of the frame part, the difference between the display device's display screen and black color tends to be large, resulting in a poorly designed display device with a conspicuous frame part. It was.

  Further, as shown in FIG. 18A, when the infrared transmission film 141 is formed, a step 141 a is generated with respect to the surface of the frame portion 103. The step 141a has a disadvantage that the front plate becomes thicker.

JP 2009-69321 A JP 2012-78483 A

  Provided is a front panel for a touch panel excellent in design, in which the reflectance of the frame portion is reduced, the reflection is small, and the difference between black when the display screen is displayed in black and the black color of the frame portion is small. In addition, a touch panel front plate having an infrared transmission function is provided without increasing the number of manufacturing steps and manufacturing cost for forming the infrared transmission film 141 on the frame portion 103. Further, without increasing the number of manufacturing steps and manufacturing cost for forming the infrared transmitting film 141 on the frame portion 103, the infrared transmitting function is provided, the reflectance of the frame portion is reduced, the reflection is small, and the display screen is reduced. Provided is a front panel for a touch panel excellent in design, in which the difference between black when displayed black and the black of the frame portion is small. Furthermore, the integrated sensor board | substrate of the front plate which has the said frame part, and a capacitive touch panel sensor is provided. Provided is a display device having a good display quality, comprising the front plate or the integrated sensor substrate.

  The object of the present invention employs the following configuration in order to solve the above disadvantages.

  One aspect of the present invention is a front panel for a capacitive touch panel used in a touch panel, and the front panel has a frame portion that is formed at a peripheral portion on one surface and divides a display area of a predetermined shape. The front plate is made of a transparent material, and the frame portion is a pseudo black layer containing a mixture of two or more types of pigments and having a transmittance of light having a wavelength of 400 nm to 750 nm of 30% or less. (A) the first light-shielding layer formed on the side, and (A) the second light-shielding layer formed so as to overlap the first light-shielding layer and having an optical density (OD value) of 2 or more. It consists of a laminated structure.

  Alternatively, it is a front plate for a capacitive touch panel used for a touch panel, and the front plate is provided with a frame portion that is formed on a peripheral portion on one surface thereof and divides a display area of a predetermined shape, The face plate is made of a transparent material, and the frame portion is made of a material that transmits infrared rays, and is formed on the front plate side so as to overlap (A) the first light shielding layer and (A) the first light shielding layer. And (B) a second light shielding layer having an optical density (OD value) of 2 or more, and (B) the second light shielding layer has an opening.

  Moreover, the pseudo-black layer in which the transmittance of light having a wavelength of 400 nm to a wavelength of 750 nm includes a mixture of two or more kinds of pigments and a material that transmits infrared rays may be 30% or less.

  Moreover, (A) The average light transmittance in the wavelength range of 850 nm to 1000 nm of the first light shielding layer may be 80% or more.

  Further, (A) the first light shielding layer may contain at least a red and blue pigment, or a red, blue and yellow pigment.

  Further, the optical density (OD value) of the frame portion may be 3 or more.

  Further, the cut surface of the frame portion by the surface orthogonal to the front plate may have a forward tapered shape.

  According to another aspect of the present invention, there is provided a display device having a pixel region in which a plurality of pixels are arranged in a matrix, and forming a pixel in the pixel region based on an input signal; A touch panel sensor attached so as to cover the region and the above-described capacitive touch panel front panel are provided.

  The display device also includes an infrared receiving unit or / and an infrared transmitting unit that receives or / and transmits infrared rays, and the infrared receiving unit and / or infrared transmitting unit is below a region having a frame portion formed on the front plate. May be provided.

  According to still another aspect of the present invention, there is provided an integrated sensor substrate including a front plate and a capacitive touch panel sensor, which is formed on a transparent front plate and a peripheral portion on one surface of the front plate. A first transparent electrode having a frame portion defining a shape display area and a sensor layer laminated on one surface of the front plate and the frame portion and integrated with the front plate, the sensor layers being insulated from each other And a second transparent electrode, the frame portion is a pseudo black layer containing a mixture of two or more types of pigments and having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. (A) a first light-shielding layer, and (A) an optical density (OD value) of 2 or more that is formed so as to overlap with the first light-shielding layer. Become.

  Alternatively, it is an integrated sensor substrate of a front plate and a capacitive touch panel sensor, and is formed on a transparent front plate and a peripheral portion on one surface of the front plate, and partitions a display area of a predetermined shape And a sensor layer laminated on one surface and the frame portion of the front plate and integrated with the front plate, and the sensor layer includes a first transparent electrode and a second transparent electrode which are insulated from each other. The frame portion is made of a material that transmits infrared rays, and is formed to overlap the (A) first light shielding layer and (A) the first light shielding layer formed on the front plate side, and the optical density (OD value). ) Is 2 or more, and (B) the second light-shielding layer is laminated, and (B) the second light-shielding layer has an opening.

  Moreover, the pseudo-black layer in which the transmittance of light having a wavelength of 400 nm to a wavelength of 750 nm includes a mixture of two or more kinds of pigments and a material that transmits infrared rays may be 30% or less.

  Moreover, (A) The average light transmittance in the wavelength range of 850 nm to 1000 nm of the first light shielding layer may be 80% or more.

  Further, (A) the first light shielding layer may contain at least a red and blue pigment, or a red, blue and yellow pigment.

  Further, the optical density (OD value) of the frame portion may be 3 or more.

  Further, the cut surface of the frame portion by the surface orthogonal to the front plate may have a forward tapered shape.

  According to still another aspect of the present invention, there is provided a display device having a pixel region in which a plurality of pixels are arranged in a matrix, and a pixel configured in the pixel region based on an input signal; And the above-described integrated sensor substrate attached to cover the pixel region.

  The display device also includes an infrared receiving unit or / and an infrared transmitting unit that receives or / and transmits infrared rays, and the infrared receiving unit and / or infrared transmitting unit is below a region having a frame portion formed on the front plate. May be provided.

  According to the present invention, since it has the above-described features, the following can be achieved.

  That is, it is a front plate used for a touch panel, and this front plate is formed on a peripheral portion on one surface thereof and is provided with a frame portion that partitions a display area of a predetermined shape, and the front plate is made of a transparent material. The frame portion is a pseudo black layer having a transmittance of light having a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. The (A) first light-shielding layer formed on the front plate side and the (A) first It is formed so as to overlap the light shielding layer, and the optical density (OD value) is 2 or more. (B) Since the second light shielding layer is laminated, the wiring can be concealed and the reflectance of the frame portion is high. In addition, the difference from black when the display screen is displayed in black can be reduced.

  Further, the frame portion is made of a material that transmits infrared rays, and is formed so as to overlap the (A) first light shielding layer formed on the front plate side and the (A) first light shielding layer, and has an optical density. (OD value) is 2 or more. (B) Since the second light-shielding layer has an opening, (B) the second light-shielding layer has an opening. Compared with the case where a film is formed, it can be formed without changing the number of manufacturing steps and the manufacturing cost, and the front plate can be made thinner.

  Moreover, (A) Since the average light transmittance in the wavelength range of 850 nm to 1000 nm of the first light shielding layer is 80% or more, it is possible to transmit infrared rays with certainty.

  In addition, (A) the first light-shielding layer contains at least red and blue, or red, blue and yellow pigments, and therefore can be pseudo black.

  Further, since the optical density (OD value) of the frame portion is 3 or more, visible light can be absorbed with certainty.

  Moreover, since the cut surface of the frame part by the surface orthogonal to the front plate has a forward tapered shape, it is possible to prevent disconnection of the wiring arranged in the frame part.

  Furthermore, since the front plate used for this touch panel has a frame portion composed of at least a red-based and blue-based, red-based, blue-based, and yellow-based pigment, the black phase of the frame portion is made of conventional carbon or Compared with the case where the frame portion is formed using a material in which titanium is dispersed as a pigment, the frame portion is closer to black in black display, and thus the frame portion is not conspicuous, and the front plate is of good quality used for a touch panel.

  In addition, the display device includes a pixel area in which a plurality of pixels are arranged in a matrix, and a display panel that configures the pixels in the pixel area based on an input signal, and a touch panel attached to cover the pixel area Since the sensor and the front plate are provided, it is possible to simplify the manufacturing process of the cover glass, which is the front plate, compared to the case where an infrared communication window is formed in the frame portion and an infrared transmission film is formed. The display device can be thinned.

  Also, an integrated sensor substrate of a front plate and a capacitive touch panel sensor, which is formed on a transparent front plate and a peripheral portion on one surface of the front plate, and partitions a display area of a predetermined shape And a sensor layer laminated on one surface and the frame portion of the front plate and integrated with the front plate, and the frame portion is a pseudo black layer having a transmittance of light of wavelength 400 nm to wavelength 750 nm of 30% or less. The (A) first light shielding layer formed on the front plate side and the (A) first light shielding layer are formed so as to overlap with each other, and the optical density (OD value) is 2 or more (B ) Since the second light shielding layer is laminated, the wiring can be hidden, the reflectance of the frame portion can be suppressed, and the difference from black when the display screen is displayed in black can be reduced.

  Further, the frame portion is made of a material that transmits infrared rays, and is formed so as to overlap the (A) first light shielding layer formed on the front plate side and the (A) first light shielding layer, and has an optical density. (OD value) is 2 or more. (B) Since the second light-shielding layer has an opening, (B) the second light-shielding layer has an opening. Compared with the case where a film is formed, the integrated sensor substrate can be formed without changing the number of manufacturing steps and the manufacturing cost, and the integrated sensor substrate can be made thin.

  Moreover, (A) Since the average light transmittance in the wavelength range of 850 nm to 1000 nm of the first light shielding layer is 80% or more, it is possible to transmit infrared rays with certainty.

  In addition, (A) the first light-shielding layer contains at least red and blue, or red, blue and yellow pigments, and therefore can be pseudo black.

  In addition, since the frame portion contains a violet pigment, it easily absorbs light in the vicinity of a wavelength of 550 nm as compared with red, blue, and yellow pigments, and is black with a higher optical density (OD value). be able to.

  Further, since the optical density (OD value) of the frame portion is 3 or more, visible light can be absorbed with certainty.

  Moreover, since the cut surface of the frame part by the surface orthogonal to the front plate has a forward tapered shape, it is possible to prevent disconnection of the wiring arranged in the frame part.

  And this invention relates to a display apparatus provided with the integrated sensor board | substrate of a front plate and a touch panel sensor. And it has a pixel region where a plurality of pixels are arranged in a matrix, and includes a display panel that constitutes a pixel in the pixel region based on an input signal, and an integrated sensor substrate that is attached so as to cover the pixel region Therefore, compared with the case where an infrared communication window is provided in the frame portion and an infrared transmission film is formed, the manufacturing process of the cover glass as the front plate can be simplified and thinned. can do.

  Further, since the display device includes a frame portion composed of at least a red-based and blue-based, red-based, blue-based, and yellow-based pigment, when the display area is black, the black phase of the frame portion is Compared to the case where the frame portion is formed using a material in which carbon or titanium is dispersed as a pigment, the black color in the display area is closer to black, so that the frame portion is not conspicuous and the display device is of good quality.

1 is a schematic plan view showing a touch panel sensor according to a first embodiment of the present invention. The schematic plan view which shows the principal part structure of the touch-panel sensor which concerns on 1st Embodiment. Schematic sectional view showing the structure of the touch panel sensor according to the first embodiment Schematic sectional view showing the structure of the touch panel sensor according to the first embodiment The graph which shows the light transmission characteristic of (A) 1st light shielding layer pigment (red type) which concerns on 1st Embodiment The graph which shows the light transmission characteristic of the (A) 1st light shielding layer pigment (blue type) which concerns on 1st Embodiment The graph which shows the light transmission characteristic of the (A) 1st light shielding layer pigment (yellowish) based on 1st Embodiment The graph which shows the light transmission characteristic of (A) 1st light shielding layer pigment (purple type) based on 1st Embodiment Schematic sectional view showing the structure when the touch panel sensor and the display device according to the first embodiment are integrated Schematic sectional view showing the structure when the touch panel sensor and the display device according to the second embodiment are integrated Schematic sectional drawing which shows the structure before integrating the touch panel sensor and display device which concern on 3rd Embodiment. Schematic sectional view showing the structure after integrating the touch panel sensor and the display device according to the third embodiment Schematic sectional view showing the structure when the touch panel sensor and the display device according to the fourth embodiment are integrated Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (sectional view) showing a touch panel sensor according to an embodiment of the present invention. Schematic (plan view) showing a touch panel sensor according to an embodiment of the present invention. The graph which shows the light transmission characteristic of Examples 1-6, the pigment-type resists 1-5 in the comparative example 2, and the carbon-type resist film thickness of 1.4 micrometers The graph which shows the reflected light characteristic of Examples 1-5 and the frame part 3 of the comparative example 2 The graph which shows the reflected light characteristic of the frame part 3 of Example 1 and Comparative Example 2 The graph which shows the reflected light characteristic of the frame part 3 of Example 2 and Comparative Example 2 The graph which shows the reflected light characteristic of the frame part 3 of Example 3 and Comparative Example 2 The graph which shows the reflected light characteristic of the frame part 3 of Example 4 and the comparative example 2 The graph which shows the reflected light characteristic of the frame part 3 of Example 5 and Comparative Example 2 Schematic (cross-sectional view) showing the structure of the front plate of a conventional touch panel sensor Schematic diagram (plan view) showing the structure of the front panel of a conventional touch panel sensor

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(First embodiment)
A touch panel sensor according to a first embodiment of the present invention will be described with reference to FIGS. In the touch panel sensor according to the present embodiment, the cover glass and the touch sensor are directly formed integrally. Moreover, it has the structure which provides a metal wiring in a frame part.

  FIG. 1 is a plan view of a touch panel sensor 1 according to the present embodiment. FIG. 2 is a plan view showing details of the laminated structure of the touch panel sensor 1 shown in FIG. 1, and shows a state before the insulating protective film 9 of FIG. 1 is formed. 3 is a cross-sectional view taken along line AA shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB shown in FIG. In FIG. 1 to FIG. 4, in order to simplify the illustration, two lines of electrode patterns are schematically shown in each of the X direction and the Y direction. Electrodes are provided. FIG. 7 shows a form in which the display device is directly attached to the touch panel sensor according to the present embodiment and integrated, and corresponds to a cross-sectional view taken along the line AA shown in FIG.

  The touch panel sensor 1 is a position input device used in combination with a display device such as a liquid crystal panel 21 or an organic EL panel. The touch panel sensor 1 has a plurality of electrodes extending in the X direction and a plurality of electrodes extending in the Y direction, and specifies the coordinates of the contact position of the finger by detecting a change in electrostatic capacitance of the electrode in contact with or close to the finger. To do.

  Specifically, the touch panel sensor 1 includes a cover glass 2, a frame portion 3 including a first light shielding layer 3 (A) and a second light shielding layer 3 (B), a plurality of jumper wirings 4, and a first jumper wiring 4. Insulating film 5, metal wiring 6, a plurality of transparent electrodes 7 that are first transparent electrodes, a plurality of transparent electrodes 8 that are second transparent electrodes, and an insulating protective film 9.

  The cover glass 2 is a transparent front plate serving as the outermost surface of the touch panel sensor 1 and is a member touched by the user. In the present embodiment, an example in which the cover glass 2 is used as the front plate will be described. However, instead of glass, a heat-resistant transparent resin material may be used as the front plate. Moreover, the transparent plate which consists of resin materials may be stuck on the glass surface, and you may form from several layers.

  The first light-shielding layer 3 (A) is formed on the front plate side of one surface of the cover glass 2 using a pseudo black layer material having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. The second light shielding layer 3 (B) is formed using a material having an optical density (OD value) of 2 or more so as to overlap the (A) first light shielding layer. The first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) define a display area 10 having a predetermined shape in the central window portion and hide wiring provided on the peripheral edge of the touch panel sensor 1. Play a role.

  The first light shielding layer 3 (A) is formed on the front plate side of one surface of the cover glass 2 using a material that absorbs visible light and transmits infrared light. The second light shielding layer 3 (B) is formed using a material having an optical density (OD value) of 2 or more so as to overlap the (A) first light shielding layer. The first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) define a display area 10 having a predetermined shape in the central window portion and hide wiring provided on the peripheral edge of the touch panel sensor 1. Play a role.

  The frame portion 3 composed of the first light shielding layer 3 (A) and the second light shielding layer 3 (B) is formed in a rectangular frame shape so as to partition the display region 10 at the peripheral edge of the cover glass 2. Note that the planar shape of the frame portion 3 is not limited to the rectangular frame shape as in the present embodiment, and may be any shape such as a heart shape, an egg shape, or a round shape. Further, the outer peripheral edge shape (outer shape) and the inner peripheral edge shape (the shape of the display area 10) of the frame part 3 may be similar or dissimilar.

  In the second light shielding layer 3 (B), an elliptical opening having a predetermined size can be formed as an infrared communication window. The shape can be suitably formed not only in an elliptical shape but also in a circular shape, a rectangular shape or the like. Since the first light-shielding layer 3 (A) is formed using a material that absorbs visible light and transmits infrared light, the second light-shielding layer 3 (B) has an opening, so that infrared light is transmitted. Infrared communication is possible at the communication window.

  As shown in FIGS. 3 and 4, the cut surface of the frame portion 3 composed of the first light shielding layer 3 (A) and the second light shielding layer 3 (B) orthogonal to one surface of the cover glass 2 is in order. Tapered shape. Here, about the shape of the cut surface of the frame part 3, for example, when it is a reverse taper (overhang shape), there exists a possibility that wiring, such as the transparent electrode 7 of the touch panel sensor 1, may be disconnected. For this reason, about the shape of the cut surface of the frame part 3, it is advantageous with respect to a disconnection that it is a forward taper. Therefore, the frame portion 3 is formed to have a forward tapered shape according to the resist formulation and process conditions.

<First light shielding layer 3 (A)>
The 1st light shielding layer 3 (A) can use the material which permeate | transmits well-known infrared rays. Dyes and pigments can be preferably used.
The first light-shielding layer 3 (A) can be made of a photo-cured product of a pigment-based resist that absorbs visible light and transmits infrared light. Here, the pigment-based resist is a resin in which a pigment is dispersed in a resin dissolved in a solvent. The photo-cured product of the pigment-based resist means that the pigment-based resist is subjected to an exposure process by a photolithography method. It is hardened by.

  The degree of absorption of visible light is generally represented by a value called an OD value in terms of optical density. The measurement is performed using a Macbeth optical densitometer or the like in accordance with the JIS-K-7605 standard, and is obtained by irradiating the sample with a vertically transmitted light beam and expressing the ratio of the state without the sample with log (logarithm). . The higher the optical density, the lower the transmittance, and the optical density becomes 0 at a transmittance of 100%.

  In this embodiment, the pigment-based resist is a pseudo black resist containing a mixture of at least two types of pigments other than carbon black and titanium oxide. As an example, a pigment used in forming a colored transparent layer of a color filter, C.I. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 41, 48: 1, 48: 2, 48: 3, 48: 4, 57: 1, 81, 81: 1, 81: 2, 81: 3, 81: 4, 97, 122, 123, 146, 149, 166, 168, 169, 176, 177, 178, 179, 180, 184, 185, 187, 192,200,202,208,210,215,216,217,220,223,224,226,227,228,240,242,246,254,255,264,270,272,273,274,276, Red (RED) pigments typified by 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, and the like; I. At least a blue (BLUE) pigment typified by CI Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 22, 60, 64, 80, etc. Therefore, a pseudo black color can be used. Further, basic dyes exhibiting red and purple, acidic dyes, and salt-forming compounds of these dyes can also be used.

  In this embodiment, in addition to the red pigment and the blue pigment, a yellow (YELLOW) pigment may be added. It is known that yellow pigments absorb light in the low wavelength region of visible light, that is, light having a wavelength of 500 nm or less (for example, “Shoji Shiji (1965)“ Printing Ink Class ”(Nihon Printing Shimbun) P170. 173). By adding a yellow pigment to a red pigment and a blue pigment, the yellow pigment absorbs low-wavelength visible light and can be made closer to black.

  Examples of yellow (YELLOW) pigments include C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125, 126, 127, 128, 129, 137, 138, 139, 144, 146, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 17 , And the like is 175,176,177,179,180,181,182,185,187,188,193,194,198,199,213,214,218,219,220,221. Further, basic dyes exhibiting yellow, acidic dyes and salt-forming compounds of these dyes can be used in combination.

  In the pigment-based resist of this embodiment, a violet pigment may be further added. By adding a violet pigment, it is easy to absorb light in the vicinity of a wavelength of 550 nm as compared with the case where it is not added, and a black having a higher optical density (OD value) can be obtained.

  Further examples of purple pigments include C.I. I. Pigment violet 1, 19, 23, 27, 29, 30, 32, 37, 40, 42, 50.

  Further, a pigment such as an orange pigment or a green pigment may be added. Examples of the orange pigment include C.I. I. Pigment orange 36, 43, 51, 55, 59, 61, 71, 73, and the like. Examples of the green pigment include C.I. I. And green pigments such as CI Pigment Green 7, 10, 36, 37, and 58.

  FIG. 5A to FIG. 6B show light transmission characteristics of red, blue, yellow, and purple pigments. FIG. 5A shows red pigment C.I. I. Pigment Red 254 and 177 will be described. FIG. 5B shows the blue pigment C.I. I. Pigment Blue 15: 6 and 15: 3 are shown. FIG. 6A shows the yellow pigment C.I. I. Pigment Yellow 139 and 185 are shown. FIG. 6B shows a purple pigment C.I. I. The pigment violet 23 will be described. As these figures show, each color pigment has a wavelength range with low transmittance, and by mixing each color pigment, the transmittance is reduced over the entire visible light wavelength range of 400 nm to 750 nm. Can do.

  When a red pigment and a blue pigment are mixed, the mixing ratio is preferably 20:80 to 80:20, and more preferably 30:70 to 70:30. When the mixing ratio of the red pigment and the blue pigment is outside the range of 20:80 to 80:20, the reflected hue from the glass surface side of the first light-shielding layer 3 (A) is reddish or bluish. As a result, the difference from black when the display screen is displayed in black is increased, and the display device is poorly designed with a conspicuous frame portion. Further, the concealability in the vicinity of the wavelength 550 nm that is most easily visible is lowered, the optical density (OD value) of the frame portion 3 is less than 3, and good light shielding properties cannot be obtained.

  When a red pigment, a blue pigment, and a yellow pigment are mixed, the proportion of the red pigment is 10 to 60%, the proportion of the blue pigment is 30 to 70%, yellow when the total pigment is 100%. The proportion of the system pigment is preferably 5 to 40%. When mixed outside this range, the reflected hue from the glass surface side of the first light-shielding layer 3 (A) becomes reddish or bluish, and the difference from black when the display screen is black is large. As a result, the display device is poorly designed with a conspicuous frame portion. Further, the concealability in the vicinity of the wavelength 550 nm that is most easily visible is lowered, the optical density (OD value) of the frame portion 3 is less than 3, and good light shielding properties cannot be obtained.

  When a red pigment, a blue pigment, a yellow pigment, and a purple pigment are mixed, the ratio of the red pigment is 20 to 60% and the ratio of the blue pigment is 30 to 30% when the total pigment is 100%. It is preferable that the ratio of 70%, the yellow pigment is 5 to 40%, and the purple pigment is 5 to 40%. When mixed outside this range, the reflected hue from the glass surface side of the first light-shielding layer 3 (A) becomes reddish or bluish, and the difference from black when the display screen is black is large. As a result, the display device is poorly designed with a conspicuous frame portion. Further, the concealability in the vicinity of the wavelength 550 nm that is most easily visible is lowered, the optical density (OD value) of the frame portion 3 is less than 3, and good light shielding properties cannot be obtained.

<Dispersant>
When the pigment is dispersed in the pigment carrier and the organic solvent, it is necessary to contain a dispersant and a surfactant for dispersing the pigment. Surfactants, pigment intermediates, dye intermediates, Solsperse, and the like are used as the dispersant, and have a pigment affinity part having a property of adsorbing to the pigment and a part compatible with the pigment carrier. It functions to adsorb to the pigment and stabilize dispersion in the pigment carrier.

  Specifically, polycarboxylic acid esters such as polyurethane and polyacrylate, unsaturated polyamide, polycarboxylic acid, polycarboxylic acid (partial) amine salt, polycarboxylic acid ammonium salt, polycarboxylic acid alkylamine salt, polysiloxane, long Oil-based dispersants such as chain polyaminoamide phosphates, hydroxyl group-containing polycarboxylic acid esters, their modified products, amides formed by the reaction of poly (lower alkyleneimines) and polyesters having free carboxyl groups, and salts thereof , (Meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylic acid ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol, polyvinylpyrrolidone, and other water-soluble resins Molecular compound, polyester, modified polyacrylate , Ethylene oxide / propylene oxide addition compound, phosphate ester-based and the like are used, they can be used alone or in admixture of two or more.

  Although the addition amount of a dispersing agent is not specifically limited, It is preferable to set it as 1 to 10 weight% with respect to 100 weight% of compounding quantities of a pigment. In addition, the coloring composition is obtained by means of centrifugal separation, sintering filter, membrane filter or the like, coarse particles of 5 μm or more, preferably coarse particles of 1 μm or more, more preferably coarse particles of 0.5 μm or more and mixed dust. Is preferably removed.

<Surfactant>
Surfactants include polyoxyethylene alkyl ether sulfate, sodium dodecylbenzenesulfonate, alkali salt of styrene-acrylic acid copolymer, sodium alkylnaphthalenesulfonate, sodium alkyldiphenyletherdisulfonate, lauryl sulfate monoethanolamine, lauryl Anionic surfactants such as triethanolamine sulfate, ammonium lauryl sulfate, monoethanolamine stearate, sodium stearate, sodium lauryl sulfate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate; Polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene Nonionic surfactants such as alkyl ether phosphates, polyoxyethylene sorbitan monostearate, and polyethylene glycol monolaurate; chaotic surfactants such as alkyl quaternary ammonium salts and their ethylene oxide adducts; alkyldimethylamino Examples include amphoteric surfactants such as alkylbetaines such as betaine acetate and alkylimidazolines, and these can be used alone or in admixture of two or more.

  The pigment resist of this embodiment may further contain a photopolymerization monomer, a photopolymerization initiator, a sensitizer, a polyfunctional thiol, an ultraviolet absorber, and a polymerization inhibitor as exemplified below.

<Photopolymerization monomer>
Photopolymerizable monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, ethylene oxide modified trimethylolpropane tri (meth) acrylate, propylene oxide modified trimethylol Examples thereof include various acrylic esters and methacrylic esters such as propane tri (meth) acrylate.

<Photopolymerization initiator>
As photopolymerization initiators, 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, diethoxyacetophenone, p-dimethylaminoacetophenone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropane- 1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4- Acetophenones such as morpholinophenyl) -butan-1-one and 2- (dimethylamino) -2-[(4-methylphenyl) methyl] -1- [4- (4-morpholinyl) phenyl] -1-butanone Compound, benzoin, benzoin methyl ether, benzoin ethyl ether, ben Benzoin compounds such as inisopropyl ether and benzyldimethyl ketal, benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3 Benzophenone compounds such as', 4,4'-tetra (t-butylperoxycarbonyl) benzophenone, thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, isopropylthioxanthone, 2,4-diisopropylthioxanthone, 2,4-diethyl Thioxanthone compounds such as thioxanthone, 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2 (P-methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-piperonyl-4,6 -Bis (trichloromethyl) -s-triazine, 2,4-bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphth-1-yl) -4,6-bis (trichloromethyl) -s -Triazine, 2- (4-methoxy-naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-trichloromethyl- (piperonyl) -6-triazine, 2,4- Triazine compounds such as trichloromethyl (4′-methoxystyryl) -6-triazine, 1,2-octanedione, 1- [4- (phenylthio) phenyl-, 2- (O-ben) Oxime)], O- (acetyl) -N- (1-phenyl-2-oxo-2- (4′-methoxy-naphthyl) ethylidene) hydroxylamine and the like, bis (2,4,6- Phosphine compounds such as trimethylbenzoyl) phenylphosphine oxide, 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, 2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl -1,2'-biimidazole, 2,2'-bis (o-methoxyphenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-chlorophenyl) -4 , 4 ′, 5,5′-tetra (p-methylphenyl) biimidazole, imidazole compounds, 9,10-phenanthrenequinone, camphor -Quinone compounds such as quinone and ethyl anthraquinone, borate compounds, carbazole compounds, titanocene compounds and the like.

  Among these, it is more preferable to include at least one photopolymerization initiator selected from the group consisting of acetophenone compounds, phosphine compounds, and oxime ester compounds.

  These photopolymerization initiators can be used alone or in combination of two or more at any ratio as required. Content of a photoinitiator can be used in the quantity of 1.0-200 weight part with respect to 100 weight part of coloring agents, Preferably it is 1.0-150 weight part.

<Sensitizer>
Examples of the sensitizer include unsaturated ketones represented by chalcone derivatives and dibenzalacetone, 1,2-diketone derivatives represented by benzyl and camphorquinone, benzoin derivatives, fluorene derivatives, naphthoquinone derivatives, anthraquinones. Derivatives, xanthene derivatives, thioxanthene derivatives, xanthone derivatives, thioxanthone derivatives, coumarin derivatives, ketocoumarin derivatives, cyanine derivatives, merocyanine derivatives, oxonol derivatives and other polymethine dyes, acridine derivatives, azine derivatives, thiazine derivatives, oxazine derivatives, indoline derivatives , Azulene derivatives, azulenium derivatives, squarylium derivatives, porphyrin derivatives, tetraphenylporphyrin derivatives, triarylmethane derivatives, tetrabenzoporphyrin derivatives Body, tetrapyrazinoporphyrazine derivative, phthalocyanine derivative, tetraazaporphyrazine derivative, tetraquinoxalyloporphyrazine derivative, naphthalocyanine derivative, subphthalocyanine derivative, pyrylium derivative, thiopyrylium derivative, tetraphyrin derivative, annulene derivative, spiropyran derivative, Examples include spirooxazine derivatives, thiospiropyran derivatives, metal arene complexes, organoruthenium complexes, Michler ketone derivatives, and the like. In the present invention, a derivative means a compound in which a part of the compound is modified with another atom or functional group, or is modified or oxidized or reduced with respect to the original compound. The derivative only needs to contain most of the skeleton of the original compound in terms of structure, and the derivative may exhibit completely different properties only by having a similar structure of the original compound.

  Specific examples include Okawara Nobu et al., “Dye Handbook” (1986, Kodansha), Okawara Nobu et al., “Functional Dye Chemistry” (1981, CMC), Ikemori Chusaburo et al., “Special Examples include, but are not limited to, sensitizers described in “Functional Materials” (1986, CMC). In addition, a sensitizer that absorbs light from the ultraviolet region to the near infrared region can also be contained.

  Among the sensitizers, particularly preferred sensitizers include thioxanthone derivatives, Michler ketone derivatives, and carbazole derivatives. More specifically, 2,4-diethylthioxanthone, 2-chlorothioxanthone, 2,4-dichlorothioxanthone, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 1-chloro-4-propoxythioxanthone, 4,4′-bis (Dimethylamino) benzophenone, 4,4′-bis (diethylamino) benzophenone, 4,4′-bis (ethylmethylamino) benzophenone, N-ethylcarbazole, 3-benzoyl-N-ethylcarbazole, 3,6-dibenzoyl- N-ethylcarbazole or the like is used. The sensitizer may contain two or more sensitizers in any ratio. The content of the sensitizer can be used in an amount of 1.0 to 100 parts by weight with respect to 100 parts by weight of the photopolymerization initiator.

<Multifunctional thiol>
A polyfunctional thiol is a compound having two or more thiol (SH) groups. When a polyfunctional thiol is used together with a photopolymerization initiator, a thiyl radical that acts as a chain transfer agent and is less susceptible to polymerization inhibition by oxygen is generated in the radical polymerization process after light irradiation. Becomes high sensitivity. In particular, a polyfunctional aliphatic thiol in which an SH group is bonded to an aliphatic group such as methylene or ethylene group is preferable.

  For example, hexanedithiol, decanedithiol, 1,4-butanediol bisthiopropionate, 1,4-butanediol bisthioglycolate, ethylene glycol bisthioglycolate, ethylene glycol bisthiopropionate, trimethylolpropane tris Thioglycolate, trimethylolpropane tristhiopropionate, trimethylolethane tris (3-mercaptobutyrate), trimethylolpropane tris (3-mercaptobutyrate), trimethylolpropane tris (3-mercaptopropionate), Pentaerythritol tetrakisthioglycolate, pentaerythritol tetrakisthiopropionate, pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol Hexhexakis (3-mercaptopropionate), trimercaptopropionic acid tris (2-hydroxyethyl) isocyanurate, 1,4-dimethylmercaptobenzene, 2,4,6-trimercapto-s-triazine, 2- (N, N-dibutylamino) -4,6-dimercapto-s-triazine and the like. These polyfunctional thiols can be used individually by 1 type or in mixture of 2 or more types.

  The content of the polyfunctional thiol is preferably 0.05 to 100 parts by weight, more preferably 1.0 to 50.0 parts by weight with respect to 100 parts by weight of the colorant. By using 0.05 part by weight or more of polyfunctional thiol, better development resistance can be obtained. When a monofunctional thiol having one thiol (SH) group is used, such an improvement in development resistance cannot be obtained.

<Ultraviolet absorber, polymerization inhibitor>
The pigment-based resist of this embodiment can control the pattern shape and resolution of the image area by containing an ultraviolet absorber or a polymerization inhibitor. Examples of the ultraviolet absorber include 2- [4-[(2-hydroxy-3- (dodecyl and tridecyl) oxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl). -1,3,5-triazine, 2- (2-hydroxy-4- [1-octyloxycarbonylethoxy] phenyl) -4,6-bis (4-phenylphenyl) -1,3,5-triazine, etc. Hydroxyphenyltriazine, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol, Benzotriazoles such as 2- (3-tbutyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2,4-di Benzophenone series such as droxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, salicylate series such as phenyl salicylate, p-tert-butylphenyl salicylate Cyanoacrylates such as ethyl-2-cyano-3,3′-diphenylacrylate, 2,2,6,6, -tetramethylpiperidine-1-oxyl (triacetone-amine-N-oxyl), bis (2 , 2,6,6-tetramethyl-4-piperidyl) -sebacate, poly [[6-[(1,1,3,3-tetrabutyl) amino] -1,3,5-triazine-2,4-diyl ] Hindered amines such as [(2,2,6,6-tetramethyl-4-piperidinyl) imino] and the like. Properly it is used as a mixture of two or more.

  Examples of the polymerization inhibitor include methyl hydroquinone, t-butyl hydroquinone, 2,5-di-t-butyl hydroquinone, 4-benzoquinone, 4-methoxyphenol, 4-methoxy-1-naphthol, and t-butylcatechol. Hydroquinone derivatives and phenol compounds, amine compounds such as phenothiazine, bis- (1-dimethylbenzyl) phenothiazine, 3,7-dioctylphenothiazine, copper dibutyldithiocarbamate, copper diethyldithiocarbamate, manganese diethyldithiocarbamate, manganese diphenyldithiocarbamate, etc. Copper and manganese salt compounds, 4-nitrosophenol, N-nitrosodiphenylamine, N-nitrosocyclohexylhydroxylamine, N-nitrosophenylhydroxylamine Nitroso compounds and their ammonium salts or aluminum salts and the like and the like, used as a mixture thereof alone, or two or more kinds.

  The total content of the ultraviolet absorber and the polymerization inhibitor can be used in an amount of 0.01 to 20 parts by weight, preferably 0.05 to 10 parts by weight with respect to 100 parts by weight of the colorant. By using 0.01 part by weight or more of the ultraviolet absorber or the polymerization inhibitor, better resolution can be obtained.

<Second light shielding layer 3 (B)>
As the second light shielding layer 3 (B), a layer having an optical density (OD value) of 2 or more can be suitably used. For example, it can also consist of a photocured product of a black pigment resist that absorbs visible light. The black pigment contained in the black pigment-based resist is a black pigment having a light shielding property. As the black pigment, carbon black, titanium black, aniline black, anthraquinone black pigment, perylene black pigment, specifically CI pigment black 1, 6, 7, 12, 20, 31, 32, etc. are used. However, carbon black is preferable from the viewpoint of cost and light shielding properties. Carbon black may be surface-treated with a resin or the like. Here, the black pigment resist refers to a resin in which a black pigment such as carbon black or titanium black is dispersed in a resin dissolved in a solvent. The photocured product of the black pigment resist refers to the black pigment resist. The resist is hardened by performing exposure processing by a photolithography method.

Examples of the carbon black contained in the black pigment resist include, for example, # 260, # 25, # 30, # 32, # 33, # 40, # 44, # 45, # 45L, # 47 manufactured by Mitsubishi Chemical Corporation. , # 50, # 52, MA7, MA8, MA11, MA100, MA100R, MA100S, MA220, MA230, manufactured by DEGUSSA Printex A, Printex L, Printex P, Printex 30, Printex 35, Printex 40, Printex 45, Printex 45, Printex 45 Examples include Printex 60, Printex 300, Printex 350, Special Black 4, Special Black 350, and Special Black 550. Carbon black whose surface is modified with a resin or the like by a known method may be used. Carbon black may be used individually by 1 type, or 2 or more types may be mixed and used for it.
Carbon black preferably has a dibutyl phthalate (hereinafter referred to as “DBP”) oil absorption of 120 ml / 100 g or less from the viewpoint of sensitivity, and the smaller the DBP oil absorption, the more preferable.

Furthermore, it is preferable that the average primary particle diameter of carbon black is 20-300 nm. Carbon black having an average primary particle size of less than 20 nm is difficult to disperse at a high concentration, and it is difficult to obtain a photosensitive black color material having good stability over time. This is because the shape of the matrix may be deteriorated.
The carbon black content in the black color material is preferably 0.5 to 60% by weight, more preferably 10 to 50% by weight, based on the solid content of the composition. When the carbon black content is more than 60% by weight, the alignment light source does not transmit and alignment at the time of exposure becomes impossible, and dispersion stability is difficult to obtain, resulting in a decrease in sensitivity and formation of a black matrix. Can be difficult. When the content of carbon black is less than 0.5% by weight, the concealability of visible light is low, and when used as the black frame part of the front plate, the light shielding property of the wiring part etc. is low, and it can be seen through. End up. A well-known thing can be used as a titanium oxide, In addition to a titanium oxide, a titanium nitride and a titanium oxynitride are also used suitably.

  Further, the black pigment-based resist can contain an alkali-soluble resin in order to make the resist an alkali development type. In addition, the black color material may contain a resin that does not have alkali solubility together with the alkali-soluble resin, depending on the purpose such as imparting heat resistance or adhesion. Examples of the alkali-soluble resin include (meth) acrylic acid copolymers, styrene-maleic anhydride copolymers, and polyester resins having a carboxyl group. The alkali-soluble resin can be used in combination of two or more resins according to various purposes such as imparting heat resistance, solvent resistance, and chemical resistance of the coating film.

  The content of the alkali-soluble resin is preferably 5 to 50% by weight, more preferably 8 to 45% by weight, based on the solid content of the photosensitive black composition. When the content of the alkali-soluble resin is less than 5% by weight, the alkali developing performance is lowered. This is not preferable because the property is lowered.

  Other resins that can be used for the black pigment resist of the present invention include (meth) acrylamide, maleic acid, (meth) acrylonitrile, styrene, vinyl acetate, vinylidene chloride, maleimide, and the like, polyethylene oxide , Polyvinyl pyrrolidone, polyamide, polyurethane, polyester, polyether, polyethylene terephthalate, acetyl cellulose, or polyvinyl butyral. Among these, a copolymer containing at least one (meth) acrylic acid ester and (meth) acrylic acid as a copolymerization component is preferable. In particular, an acrylic resin can be suitably used. In addition to the above, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, t-butyl (meth) acrylate penzyl (meth ), Alkyl (meth) acrylates such as lauryl (meth) acrylate, hydroxyl-containing (meth) acrylates such as hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, ethoxyethyl (meth) acrylate, glycidyl (meth) acrylate Polymers using alicyclic (meth) acrylates such as ether group-containing (meth) acrylates and cyclohexyl (meth) acrylates, isobornyl (meth) acrylates, dicyclopentenyl (meth) acrylates, etc. And the like.

<Dispersant>
When the black pigment is dispersed in the pigment carrier and the organic solvent, it is necessary to contain a dispersant and a surfactant for dispersing the black pigment. As the dispersant, a surfactant, a black pigment intermediate, a dye intermediate, Solsperse, or the like is used, and a pigment affinity part having a property of adsorbing to the black pigment and a part compatible with the pigment carrier are included. It has a function of adsorbing to the black pigment and stabilizing the dispersion to the pigment carrier.

  Specifically, polycarboxylic acid esters such as polyurethane and polyacrylate, unsaturated polyamide, polycarboxylic acid, polycarboxylic acid (partial) amine salt, polycarboxylic acid ammonium salt, polycarboxylic acid alkylamine salt, polysiloxane, long Oil-based dispersants such as chain polyaminoamide phosphates, hydroxyl group-containing polycarboxylic acid esters, their modified products, amides formed by the reaction of poly (lower alkyleneimines) and polyesters having free carboxyl groups, and salts thereof , (Meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylic acid ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol, polyvinylpyrrolidone, and other water-soluble resins Molecular compound, polyester, modified polyacrylate , Ethylene oxide / propylene oxide addition compound, phosphate ester-based and the like are used, they can be used alone or in admixture of two or more.

  Although the addition amount of a dispersing agent is not specifically limited, It is preferable to set it as 1 to 10 weight% with respect to 100 weight% of compounding quantities of a pigment. In addition, the coloring composition is obtained by means of centrifugal separation, sintering filter, membrane filter or the like, coarse particles of 5 μm or more, preferably coarse particles of 1 μm or more, more preferably coarse particles of 0.5 μm or more and mixed dust. Is preferably removed.

<Surfactant>
Surfactants include polyoxyethylene alkyl ether sulfate, sodium dodecylbenzenesulfonate, alkali salt of styrene-acrylic acid copolymer, sodium alkylnaphthalenesulfonate, sodium alkyldiphenyletherdisulfonate, lauryl sulfate monoethanolamine, lauryl Anionic surfactants such as triethanolamine sulfate, ammonium lauryl sulfate, monoethanolamine stearate, sodium stearate, sodium lauryl sulfate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate; Polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene Nonionic surfactants such as alkyl ether phosphates, polyoxyethylene sorbitan monostearate, and polyethylene glycol monolaurate; chaotic surfactants such as alkyl quaternary ammonium salts and their ethylene oxide adducts; alkyldimethylamino Examples include amphoteric surfactants such as alkylbetaines such as betaine acetate and alkylimidazolines, and these can be used alone or in admixture of two or more.

  The black pigment-based resist of the present embodiment may further contain a photopolymerization monomer, a photopolymerization initiator, a sensitizer, a polyfunctional thiol, an ultraviolet absorber, and a polymerization inhibitor as exemplified below.

<Photopolymerization monomer>
Photopolymerizable monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, ethylene oxide modified trimethylolpropane tri (meth) acrylate, propylene oxide modified trimethylol Examples thereof include various acrylic esters and methacrylic esters such as propane tri (meth) acrylate.

<Photopolymerization initiator>
As photopolymerization initiators, 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, diethoxyacetophenone, p-dimethylaminoacetophenone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropane- 1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4- Acetophenones such as morpholinophenyl) -butan-1-one and 2- (dimethylamino) -2-[(4-methylphenyl) methyl] -1- [4- (4-morpholinyl) phenyl] -1-butanone Compound, benzoin, benzoin methyl ether, benzoin ethyl ether, ben Benzoin compounds such as inisopropyl ether and benzyldimethyl ketal, benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3 Benzophenone compounds such as', 4,4'-tetra (t-butylperoxycarbonyl) benzophenone, thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, isopropylthioxanthone, 2,4-diisopropylthioxanthone, 2,4-diethyl Thioxanthone compounds such as thioxanthone, 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2 (P-methoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-piperonyl-4,6 -Bis (trichloromethyl) -s-triazine, 2,4-bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphth-1-yl) -4,6-bis (trichloromethyl) -s -Triazine, 2- (4-methoxy-naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-trichloromethyl- (piperonyl) -6-triazine, 2,4- Triazine compounds such as trichloromethyl (4′-methoxystyryl) -6-triazine, 1,2-octanedione, 1- [4- (phenylthio) phenyl-, 2- (O-ben) Oxime)], O- (acetyl) -N- (1-phenyl-2-oxo-2- (4′-methoxy-naphthyl) ethylidene) hydroxylamine and the like, bis (2,4,6- Phosphine compounds such as trimethylbenzoyl) phenylphosphine oxide, 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, 2,2′-bis (o-chlorophenyl) -4,5,4 ′, 5′-tetraphenyl -1,2'-biimidazole, 2,2'-bis (o-methoxyphenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-chlorophenyl) -4 , 4 ′, 5,5′-tetra (p-methylphenyl) biimidazole, imidazole compounds, 9,10-phenanthrenequinone, camphor -Quinone compounds such as quinone and ethyl anthraquinone, borate compounds, carbazole compounds, titanocene compounds and the like.

  Among these, it is more preferable to include at least one photopolymerization initiator selected from the group consisting of acetophenone compounds, phosphine compounds, and oxime ester compounds.

  These photopolymerization initiators can be used alone or in combination of two or more at any ratio as required. Content of a photoinitiator can be used in the quantity of 1.0-200 weight part with respect to 100 weight part of coloring agents, Preferably it is 1.0-150 weight part.

<Sensitizer>
Examples of the sensitizer include unsaturated ketones represented by chalcone derivatives and dibenzalacetone, 1,2-diketone derivatives represented by benzyl and camphorquinone, benzoin derivatives, fluorene derivatives, naphthoquinone derivatives, anthraquinones. Derivatives, xanthene derivatives, thioxanthene derivatives, xanthone derivatives, thioxanthone derivatives, coumarin derivatives, ketocoumarin derivatives, cyanine derivatives, merocyanine derivatives, oxonol derivatives and other polymethine dyes, acridine derivatives, azine derivatives, thiazine derivatives, oxazine derivatives, indoline derivatives , Azulene derivatives, azulenium derivatives, squarylium derivatives, porphyrin derivatives, tetraphenylporphyrin derivatives, triarylmethane derivatives, tetrabenzoporphyrin derivatives Body, tetrapyrazinoporphyrazine derivative, phthalocyanine derivative, tetraazaporphyrazine derivative, tetraquinoxalyloporphyrazine derivative, naphthalocyanine derivative, subphthalocyanine derivative, pyrylium derivative, thiopyrylium derivative, tetraphyrin derivative, annulene derivative, spiropyran derivative, Examples include spirooxazine derivatives, thiospiropyran derivatives, metal arene complexes, organoruthenium complexes, Michler ketone derivatives, and the like. In the present invention, a derivative means a compound in which a part of the compound is modified with another atom or functional group, or is modified or oxidized or reduced with respect to the original compound. The derivative only needs to contain most of the skeleton of the original compound in terms of structure, and the derivative may exhibit completely different properties only by having a similar structure of the original compound.

  Specific examples include Okawara Nobu et al., “Dye Handbook” (1986, Kodansha), Okawara Nobu et al., “Functional Dye Chemistry” (1981, CMC), Ikemori Chusaburo et al., “Special Examples include, but are not limited to, sensitizers described in “Functional Materials” (1986, CMC). In addition, a sensitizer that absorbs light from the ultraviolet region to the near infrared region can also be contained.

  Among the sensitizers, particularly preferred sensitizers include thioxanthone derivatives, Michler ketone derivatives, and carbazole derivatives. More specifically, 2,4-diethylthioxanthone, 2-chlorothioxanthone, 2,4-dichlorothioxanthone, 2-isopropylthioxanthone, 4-isopropylthioxanthone, 1-chloro-4-propoxythioxanthone, 4,4′-bis (Dimethylamino) benzophenone, 4,4′-bis (diethylamino) benzophenone, 4,4′-bis (ethylmethylamino) benzophenone, N-ethylcarbazole, 3-benzoyl-N-ethylcarbazole, 3,6-dibenzoyl- N-ethylcarbazole or the like is used. The sensitizer may contain two or more sensitizers in any ratio. The content of the sensitizer can be used in an amount of 1.0 to 100 parts by weight with respect to 100 parts by weight of the photopolymerization initiator.

<Multifunctional thiol>
A polyfunctional thiol is a compound having two or more thiol (SH) groups. When a polyfunctional thiol is used together with a photopolymerization initiator, a thiyl radical that acts as a chain transfer agent and is less susceptible to polymerization inhibition by oxygen is generated in the radical polymerization process after light irradiation. Becomes high sensitivity. In particular, a polyfunctional aliphatic thiol in which an SH group is bonded to an aliphatic group such as methylene or ethylene group is preferable.

  For example, hexanedithiol, decanedithiol, 1,4-butanediol bisthiopropionate, 1,4-butanediol bisthioglycolate, ethylene glycol bisthioglycolate, ethylene glycol bisthiopropionate, trimethylolpropane tris Thioglycolate, trimethylolpropane tristhiopropionate, trimethylolethane tris (3-mercaptobutyrate), trimethylolpropane tris (3-mercaptobutyrate), trimethylolpropane tris (3-mercaptopropionate), Pentaerythritol tetrakisthioglycolate, pentaerythritol tetrakisthiopropionate, pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol Hexhexakis (3-mercaptopropionate), trimercaptopropionic acid tris (2-hydroxyethyl) isocyanurate, 1,4-dimethylmercaptobenzene, 2,4,6-trimercapto-s-triazine, 2- (N, N-dibutylamino) -4,6-dimercapto-s-triazine and the like. These polyfunctional thiols can be used individually by 1 type or in mixture of 2 or more types.

  The content of the polyfunctional thiol is preferably 0.05 to 100 parts by weight, more preferably 1.0 to 50.0 parts by weight with respect to 100 parts by weight of the colorant. By using 0.05 part by weight or more of polyfunctional thiol, better development resistance can be obtained. When a monofunctional thiol having one thiol (SH) group is used, such an improvement in development resistance cannot be obtained.

<Ultraviolet absorber, polymerization inhibitor>
The pigment-based resist of this embodiment can control the pattern shape and resolution of the image area by containing an ultraviolet absorber or a polymerization inhibitor. Examples of the ultraviolet absorber include 2- [4-[(2-hydroxy-3- (dodecyl and tridecyl) oxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl). -1,3,5-triazine, 2- (2-hydroxy-4- [1-octyloxycarbonylethoxy] phenyl) -4,6-bis (4-phenylphenyl) -1,3,5-triazine, etc. Hydroxyphenyltriazine, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl) phenol, Benzotriazoles such as 2- (3-tbutyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2,4-di Benzophenone series such as droxybenzophenone, 2-hydroxy-4-octoxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, salicylate series such as phenyl salicylate, p-tert-butylphenyl salicylate Cyanoacrylates such as ethyl-2-cyano-3,3′-diphenylacrylate, 2,2,6,6, -tetramethylpiperidine-1-oxyl (triacetone-amine-N-oxyl), bis (2 , 2,6,6-tetramethyl-4-piperidyl) -sebacate, poly [[6-[(1,1,3,3-tetrabutyl) amino] -1,3,5-triazine-2,4-diyl ] Hindered amines such as [(2,2,6,6-tetramethyl-4-piperidinyl) imino] and the like. Properly it is used as a mixture of two or more.

  Examples of the polymerization inhibitor include methyl hydroquinone, t-butyl hydroquinone, 2,5-di-t-butyl hydroquinone, 4-benzoquinone, 4-methoxyphenol, 4-methoxy-1-naphthol, and t-butylcatechol. Hydroquinone derivatives and phenol compounds, amine compounds such as phenothiazine, bis- (1-dimethylbenzyl) phenothiazine, 3,7-dioctylphenothiazine, copper dibutyldithiocarbamate, copper diethyldithiocarbamate, manganese diethyldithiocarbamate, manganese diphenyldithiocarbamate, etc. Copper and manganese salt compounds, 4-nitrosophenol, N-nitrosodiphenylamine, N-nitrosocyclohexylhydroxylamine, N-nitrosophenylhydroxylamine Nitroso compounds and their ammonium salts or aluminum salts and the like and the like, used as a mixture thereof alone, or two or more kinds.

  The total content of the ultraviolet absorber and the polymerization inhibitor can be used in an amount of 0.01 to 20 parts by weight, preferably 0.05 to 10 parts by weight with respect to 100 parts by weight of the colorant. By using 0.01 part by weight or more of the ultraviolet absorber or the polymerization inhibitor, better resolution can be obtained.

  In order to sufficiently block the visible light entering the frame portion 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) composed of a photo-cured product of a pigment-based resist, The optical density (OD value) of the part 3 is preferably 3 or more. Moreover, in order to transmit infrared rays and perform infrared communication, it is preferable that the average light transmittance of the first light-shielding layer 3 (A) in the wavelength range of 850 nm to 1000 nm is 80% or more.

  The jumper wiring 4 is formed using a conductive material, and is intermittently arranged in a matrix on the cover in the display area 10 in the X direction parallel to one side of the display area 10 and in the Y direction orthogonal thereto. Has been. The jumper wiring 4 is for connecting the transparent electrodes 7 aligned in the X direction.

  The plurality of first insulating films 5 are provided corresponding to each of the jumper wirings 4. Each of the first insulating films 5 is formed so as to cross the corresponding jumper wiring 4 and extend in the Y direction, and partially overlaps the central portion of the jumper wiring 4 in the X direction. The first insulating film 5 functions as an interlayer insulating film between the jumper wiring 4 and the transparent electrode 8. In order to enable the X-direction connection between the jumper wiring 4 and the transparent electrode 7, the first insulating film 5 does not overlap both ends of the jumper wiring 4.

  The metal wiring 6 is formed directly or indirectly on the frame portion 3 composed of the first light shielding layer 3 (A) and the second light shielding layer 3 (B), and is a transparent electrode located at the peripheral edge of the display region 10. 7 and 8 are electrically connected. In the present embodiment, the metal wiring 6 is made of a Mo / Al / Mo (molybdenum / aluminum / molybdenum) laminate, but may be formed of Au (gold), Ag (silver), an Ag alloy, or the like. good.

  The transparent electrode 7 is for detecting the X coordinate. The transparent electrode 7 is formed on the cover glass 2 in the display region 10 using a material having electrical conductivity and transparency. The transparent electrode 7 is intermittently arranged in a matrix in the X direction and the Y direction, and is electrically connected to the jumper wiring 4 adjacent in the X direction. The transparent electrode 7 is made of, for example, ITO (Indium Tin Oxide).

  The transparent electrode 8 is for detecting the Y coordinate. In the present embodiment, the transparent electrode 8 is formed in the same process as the transparent electrode 7 using the same material as the transparent electrode 7. The transparent electrode 8 extends in the Y direction between the columns of the transparent electrodes 7 aligned in the Y direction, and three-dimensionally intersects with the jumper wiring 4 on the first insulating film 5 as shown in FIGS. .

  The insulating protective film 9 is formed on almost the entire surface of the cover glass 2 except for the portion corresponding to the lead-out wiring of the metal wiring 6 so as to cover the jumper wiring 4, the metal wiring 6, the transparent electrodes 7 and 8, and the frame portion 3. Has been. The insulating protective film 9 functions as a protective film that protects each component formed on the cover glass 2.

  In the touch panel sensor 1 according to the present embodiment, the jumper wiring 4, the insulating film 5, the transparent electrodes 7 and 8, and the insulating protective film 9 correspond to the sensor layer.

  FIG. 7 shows a form when the liquid crystal panel 21 is directly attached to the touch panel sensor 1 according to the present embodiment as a display device and integrated. As shown in FIG. 7, the liquid crystal panel 21 includes polarizing plates 22 and 27, a front glass 23, a color filter 24, a layer 25 such as a liquid crystal / electrode / TFT, and a back glass 26.

  The liquid crystal panel 21 is illuminated from the back glass 26 side by a backlight (not shown). The image displayed on the liquid crystal panel 21 is visually recognized through the display area 10 inside the frame portion 3 formed on the cover glass 2 and is operated by the touch panel sensor 1. Further, the touch panel sensor 1 has a width larger than that of the liquid crystal panel 21 by the amount of the frame portion 3 including the first light shielding layer 3 (A) and the second light shielding layer 3 (B).

  In the present embodiment, as described above, the first light-shielding layer 3 (A) is a pseudo black layer having a transmittance of light of wavelength 400 nm to wavelength 750 nm of 30% or less, or absorbs visible light and transmits infrared light. Compared to the case where an infrared communication window is provided in the frame portion and an infrared transmission film is formed, the cover glass 2 that is the front plate is manufactured without changing the number of manufacturing steps and the manufacturing cost. Can be made thin.

  In addition, when the relative permittivity and the volume resistivity of the frame portion 3 including the first light shielding layer 3 (A) and the second light shielding layer 3 (B) are low and the volume resistivity is high, the first light shielding layer 3 ( Insulation of the frame part 3 composed of A) and the second light-shielding layer 3 (B) becomes unnecessary, and directly on the frame part 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B). A sensor layer and a metal wiring 6 can be formed. In addition, since the number of steps is reduced by eliminating the need for an insulating film covering the frame portion 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B), cost reduction and yield improvement are achieved. realizable.

  Moreover, in this embodiment, the exposure process of the photolithographic method was performed for the material of the 1st light shielding layer 3 (A) and the 2nd light shielding layer 3 (B). When the frame part 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) is formed by screen printing, the irregularities on the surface of the frame part 3 become rough, but the frame is formed by photolithography. When the part 3 is formed, the surface of the frame part 3 becomes smooth. Therefore, the metal wiring 6 can be directly and stably formed on the frame portion 3.

  Here, when the infrared communication window is provided in the frame part 3 as in the conventional technique, it is necessary to form an infrared transmission film on the frame part 3, and when the infrared transmission film is formed, the frame is formed. A step is generated with respect to the surface of the portion 3. If the metal wiring 6 is provided on the step, there is an inconvenience that it is easy to disconnect. However, in the case of the present embodiment, the step due to the infrared transmission film does not occur in the frame portion 3, so that the metal wiring 6 can be formed at an arbitrary position of the frame portion 3.

(Second Embodiment)
A touch panel sensor according to a second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only different parts are described. FIG. 8 shows a form when the liquid crystal panel 21 is directly attached to the touch panel sensor 1 according to the present embodiment and integrated. In this embodiment as well, the cut surface of the frame portion 3 composed of the first light shielding layer 3 (A) and the second light shielding layer 3 (B) has the same forward taper shape as in the first embodiment. In the drawings, description of the forward tapered shape is omitted.

  The touch panel sensor 1 according to the present embodiment is the same as the first embodiment in that the touch sensor is directly formed integrally with the cover glass 2, but the first light shielding layer 3 (A) and The difference is that the metal wiring 6 is provided after the second insulating layer 11 is formed in the frame portion 3 made of the second light-shielding layer 3 (B).

  In the first embodiment, the volume resistivity of the material constituting the frame portion 3 composed of the first light shielding layer 3 (A) and the second light shielding layer 3 (B) is large, the relative dielectric constant is low, The material of the frame portion 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) is cured by performing exposure processing by a photolithography method to smooth the surface, and the first light-shielding layer The metal wiring 6 was directly formed on the frame part 3 consisting of the layer 3 (A) and the second light shielding layer 3 (B). Here, when it is desired to protect the frame portion 3 composed of the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) from the chemical treatment in the process of forming the metal wiring 6, FIG. As shown, it is preferable to form the second insulating layer 11 on the frame portion 3 and then provide the metal wiring 6.

  In the present embodiment, as described above, the first light-shielding layer 3 (A) is a pseudo black layer having a transmittance of light of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less, or absorbs visible light and transmits infrared light. Compared to the case where an infrared transmission window is formed by providing an infrared communication window in the frame portion, the number of manufacturing steps and the manufacturing cost of the cover glass 2 that is the front plate are not changed. It is possible to reduce the thickness.

(Third embodiment)
With reference to FIGS. 9A and 9B, a touch panel sensor according to a third embodiment of the present invention will be described. In the third embodiment, the same parts as those described above are denoted by the same reference numerals, description thereof will be omitted, and only different parts will be described. Fig.9 (a) shows the state before an assembly, and FIG.9 (b) shows the form when the liquid crystal panel 21 is integrated with the touch panel sensor 1 which concerns on this embodiment.

  As shown in FIG. 9A, the touch panel sensor 1 includes two parts, a cover glass 2 and a touch sensor glass 31. The cover glass 2 has a pseudo black layer having a light transmittance of 30% or less at a wavelength of 400 nm to 750 nm, or a first light shielding layer 3 made of an infrared transmitting material that absorbs visible light and transmits infrared light (A ) And the second light-shielding layer 3 (B) made of a material having an optical density (OD value) of 2 or more is formed. The touch sensor glass 31 has a plurality of jumper wirings 4, a first insulating film 5, a transparent electrode 8 and the like on one surface thereof as in the embodiment described so far (omitted in FIGS. 9A and 9B). The metal wiring 6 is formed. The liquid crystal panel 21 is provided with a spacer 28 at the end.

  FIG. 9 (b) is a case where the above three members are pasted together. An air gap layer 29 is formed between the touch sensor glass 31 and the liquid crystal panel 21 by the amount of the spacer 28.

  In the present embodiment, as described above, the frame portion 3 is made of a pseudo black layer having a transmittance of light of wavelength 400 nm to wavelength 750 nm of 30% or less, or an infrared transmitting material that absorbs visible light and transmits infrared light. Since the first light-shielding layer 3 (A) and the second light-shielding layer 3 (B) made of a material having an optical density (OD value) of 2 or more are used, an infrared communication window is provided in the frame portion and an infrared transmission film Compared to the case of forming the cover glass 2, it is possible to manufacture the cover glass 2 that is the front plate without changing the number of manufacturing steps and the manufacturing cost, and it is possible to reduce the thickness.

(Fourth embodiment)
A touch panel sensor according to a fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, the same parts as those described above are denoted by the same reference numerals, description thereof will be omitted, and only different parts will be described. FIG. 10 shows a form when the liquid crystal panel 21 is integrated with the touch panel sensor 1 according to the present embodiment.

  As shown in FIG. 10, in this embodiment, the touch panel sensor 1 is composed of two parts, a cover glass 2 and a touch sensor glass 31, as in the third embodiment. The third embodiment is different from the third embodiment in that the touch sensor glass 31 is used as an interlayer insulating layer and the transparent electrode 8 and the metal wiring 6 are formed on both surfaces thereof.

  In the present embodiment, as described above, the frame portion 3 is made of a pseudo black layer having a transmittance of light of wavelength 400 nm to wavelength 750 nm of 30% or less, or a material that absorbs visible light and transmits infrared light. Since the light shielding layer 3 (A) and the second light shielding layer 3 (B) made of a material having an optical density (OD value) of 2 or more are used, an infrared communication window is provided in the frame portion and an infrared transmission film is formed. Compared with the case where it forms, it becomes possible to manufacture without changing the manufacturing process number and manufacturing cost of the cover glass 2 which is a front plate, and can also make it thin.

  The touch panel sensor of the present invention is not limited to the above-described embodiments, and various modifications can be made. Although four types of configurations have been described as the above-described embodiments, the present invention is not limited to these structures. For example, the insulating film may be formed not only on a part of an electrode or the like but also as a layered insulating layer extending over the entire panel.

  In the above-described embodiment, the projected capacitive touch panel is described as the touch panel sensor. However, the touch capacitive sensor is not limited to the capacitive capacitive touch panel, and can be applied to various types of touch panels having a frame portion. Of course.

  Further, in the above-described embodiment, the infrared communication unit that performs transmission / reception communication using infrared rays has been described using a display such as a mobile phone provided below the frame portion. However, the present invention is not limited to this. Of course, the present invention can be applied to a display device having a function of either infrared transmission or infrared reception, such as a television receiver including an infrared remote control light receiving unit.

(Fifth embodiment)
This embodiment has the same configuration as that of the first to fourth embodiments except that a screen printing method is used instead of the photolithography method for forming the frame portion. The screen printing ink can be adjusted for screen printing by a conventionally known method based on a composition obtained by removing the photopolymerization initiator from the pigment-based resist of the present embodiment. As screen printing plates for printing this screen printing pigment-based ink in a desired pattern, polyester fiber cocoons, nylon fiber cocoons, and stainless metal cocoons are used, and there is little expansion and contraction, and ink and paste can be applied thickly. Stainless steel is preferably used. The film thickness is adjusted by selecting the number of meshes per inch determined by the screen weaving density called the number of meshes. Printing is performed with a screen printer using screen printing ink, a screen plate, and a squeegee, and pre-baking is performed as necessary to evaporate the organic solvent. For pre-baking, a hot air circulation oven, a hot plate, or an IR oven can be used. An arbitrary frame pattern can be obtained by performing a heat treatment after pre-baking. A heat drying oven can be used for the heat treatment, and heating is appropriately performed at a temperature range of about 150 ° C. to 230 ° C. for 10 minutes to 60 minutes in accordance with the curing conditions of the screen printing ink.

  In order to describe the present invention in more detail, examples will be given below, but the present invention is not limited to these examples. In this example, the manufacturing method for the configuration described in the second embodiment will be described in detail.

Example 1
FIGS. 11A to 16B are diagrams illustrating a manufacturing process of the touch panel sensor 1 according to the present embodiment. 11 (a) to 16 (b), (a) is a cross-sectional view, and (b) is a plan view. Moreover, the dashed-two dotted line shown to (b) represents the cutting position of sectional drawing of (a).

<1. Formation of first light shielding layer 3 (A)>
First, a pseudo black layer having a transmittance of light of wavelength 400 nm to wavelength 750 nm of 30% or less or a pigment-based resist (described later) that absorbs visible light and transmits infrared light is spinned on one surface of the cover glass 2. It was applied by coating.
Next, after removing the solvent content with a vacuum dryer, exposure was performed by a proximity exposure system (ultra-high pressure mercury lamp). Here, as the photomask for exposure, a soda glass patterned with Cr (chromium) was used.
Next, it developed with the alkaline developing solution.
Then, heat treatment at 235 ° C. × 20 minutes was performed to form a first light shielding layer 3 (A) shown in FIG.

<1. Formation of second light shielding layer 3 (B)>
Next, a carbon resist (described later) having an optical density (OD value) of 2 or more was applied on the surface of the cover glass 2 on which the first light-shielding layer 3 (A) was formed by spin coating.
Next, after removing the solvent content with a vacuum dryer, exposure was performed by a proximity exposure system (ultra-high pressure mercury lamp). Here, as the photomask for exposure, a soda glass patterned with Cr (chromium) was used.
Next, it developed with the alkaline developing solution.
Then, heat treatment at 235 ° C. × 20 minutes was performed to form the second light shielding layer 3 (B) shown in FIG. An elliptical opening having a size of 2 × 3 mm was formed for infrared communication to form an infrared communication window 140.

<2. Formation of jumper wiring 4>
First, an ITO film was formed on the formation shown in FIGS. 11A and 11B by heat sputtering, in which sputtering was performed while heating at 170 ° C. by a DC magnetron sputtering method.
Next, a general novolac positive resist was spin-coated, pre-baked, exposed, and then positively developed with an alkaline developer. Here, a proximity exposure system (ultra-high pressure mercury lamp) was used for exposure, and a soda glass patterned with Cr was used as a photomask for exposure.
Then, etching is performed using an etching solution containing oxalic acid ((COOH) ₂ ) as a main component, and the positive resist is exposed to the entire surface. Then, the positive resist is stripped with an alkaline stripping solution, and FIGS. As shown in b), the jumper wiring 4 was formed of an ITO film.

<3. Formation of first insulating film 5 and second insulating film 11>
First, an acrylic insulating material was applied by spin coating on the formation shown in FIGS. 12 (a) and 12 (b).
Next, pre-baking was performed to remove the solvent, and exposure was performed by a proximity exposure system (super high pressure mercury lamp). Here, as a photomask for exposure, a quartz glass having a pattern made of Cr was used.
Next, it developed with the alkaline developing solution and heat-processed.
In this manner, as shown in FIGS. 13A and 13B, the first insulating film 5 on the jumper wiring 4 and the second insulating film 11 on the frame portion 3 were formed simultaneously.
In this process, since the first insulating film 5 and the second insulating film 11 are formed at the same time, the manufacturing process and the manufacturing cost are not increased as compared with the case where they are formed separately.

<4. Formation of metal wiring 6>
First, a Mo layer, an Al layer, and a Mo layer are sequentially formed in a vacuum by a DC magnetron sputtering method on the formation shown in FIGS. A Mo / Al / Mo laminate was formed.
Next, a general novolac positive resist was spin-coated, pre-baked, exposed, and then positively developed with an alkaline developer. Here, a proximity exposure system (ultra-high pressure mercury lamp) was used for exposure, and a soda glass patterned with Cr was used as a photomask for exposure.
Then, etching was performed with a phosphoric acid / nitric acid / acetic acid three-component etchant (etching solution), and the positive resist was exposed on the entire surface, and then the positive resist was stripped with an alkaline stripping solution.
In this way, the metal wiring 6 was formed on the second insulating film 11 as shown in FIGS.

<5. Formation of transparent electrodes 7 and 8>
First, an ITO film was formed on the formation shown in FIGS. 14A and 14B by heat sputtering, in which sputtering was performed while heating at 170 ° C. by a DC magnetron sputtering method.
Next, a general novolac positive resist was spin-coated, pre-baked, exposed, and then positively developed with an alkaline developer. Here, a proximity exposure system (ultra-high pressure mercury lamp) was used for exposure, and a soda glass patterned with Cr was used as a photomask for exposure.
And it etched using the etching liquid which has oxalic acid as a main component, and exposed the positive resist to the whole surface, Then, the positive resist was peeled with the alkaline peeling liquid.
Thus, as shown in FIGS. 15A and 15B, the transparent electrodes 7 and 8 were formed of the ITO film.

<6. Formation of insulating protective film 9>
First, an acrylic overcoat material was applied by spin coating on the formation shown in FIGS. 15 (a) and 15 (b).
Next, pre-baking was performed to remove the solvent, and exposure was performed by a proximity exposure system (super high pressure mercury lamp). Here, as a photomask for exposure, a quartz glass having a pattern made of Cr was used.
Next, it developed with the alkaline developing solution and heat-processed.
In this way, as shown in FIGS. 16A and 16B, the insulating protective film 9 was formed, and the touch panel sensor 1 was manufactured and completed.

<7. About pigment-based resists>
The pigment-based resist 1 used in the above examples is obtained by dispersing a red pigment and a blue pigment in an alkali-soluble resin dissolved in a solvent. Examples of red pigments and blue pigments include C.I. I. Pigment red 254 and C.I. I. A mixture of CI Pigment Blue 15: 6 at a ratio of 1: 1 was used. The pigment ratio in the solid content is 28%. The manufacturing method of alkali-soluble resin and the pigment-type resist 1 is shown below.

[Synthesis of alkali-soluble resin]
800 parts of 1-methoxy-2-propyl acetate was placed in a reaction vessel, heated while injecting nitrogen gas into the vessel, and a mixture of the following monomer and thermal polymerization initiator was added dropwise to carry out a polymerization reaction.
Styrene 40 parts Methacrylic acid 60 parts Methyl methacrylate 55 parts Benzyl methacrylate 45 parts Azobisisobutyronitrile 10 parts 1,4-dimethylmercaptobenzene 3 parts After dripping and heating sufficiently, 1 part of azobisisobutyronitrile What was dissolved in 50 parts of methoxy-2-propyl acetate was added, and the reaction was further continued to obtain an acrylic resin solution.
An acrylic resin solution was prepared by adding 1-methoxy-2-propylacetate to the resin solution so that the solid content was 30% by weight to obtain an alkali-soluble resin solution. The weight average molecular weight of the acrylic resin was about 20,000.

[First pigment-based resist]
A mixture having the following composition was spread and mixed uniformly, then dispersed with a sand mill for 5 hours using glass beads having a diameter of 1 mm, and then filtered with a 5 μm filter to obtain a dispersion of a light shielding agent.
Red pigment: C.I. I. Pigment Red 254
("ILGER FOR RED B-CF" manufactured by BASF) 50 parts Blue pigment: C.I. I. Pigment Blue 15: 6
(Toyo Ink Co., Ltd., LIONOGEN BLUE 7706) 50 parts Dispersant (Ajinomoto Fine Techno Co., Ltd. “Ajisper PB821”) 3.3 parts Alkali-soluble resin solution 183 parts Thereafter, the mixture having the following composition is stirred uniformly. After mixing, the mixture was filtered through a 5 μm filter to obtain a first pigment-based resist.
233 parts of the above dispersion 173 parts alkali-soluble resin solution 173 parts polyfunctional polymerizable monomer ("Aronix M-400" manufactured by Toa Gosei) 50 parts Photoinitiator ("Irgacure 369" manufactured by Ciba Specialty Chemicals) 25 parts Sensitizer 4 , 4'-bis (diethylamino) benzophenone ("EAB-F" manufactured by Hodogaya Chemical Co., Ltd.) 5 parts cyclohexanone 186 parts propylene glycol monomethyl ether acetate 333 parts

  FIG. 17A shows the light transmission characteristics when the first light-shielding layer 3 (A) is formed to a thickness of 2.4 μm using this material. As can be seen from FIG. 17A, at least at a wavelength of 850 nm to 1000 nm, the light transmittance exceeds 80 percent.

[Carbon resist]
A mixture of the following composition is stirred and mixed so as to be uniform, and a carbon-based resist is prepared. Similar to the frame portion 3 of the second light-shielding layer 3 (B) shown in FIG. A second light shielding layer 3 (B) was formed.
Carbon black dispersion (“TPBK-234C” manufactured by Gokoku Color Co., Ltd.) 161 parts Propylene glycol monomethyl ether acetate solution of acid anhydride polycondensate of epoxy acrylate having a fluorene skeleton (resin solid content concentration = 56.1% by mass) , Nippon Steel Chemical Co., Ltd. V259ME) 40 parts Polyfunctional polymerizable monomer (Osaka Organic Industry Co., Ltd. “UADPH80A (molecular weight 764)”) 10 parts Photoinitiator (BASF “Irgacure OXE02”) 0.3 Part Sensitizer 4,4'-bis (diethylamino) benzophenone ("EAB-F" manufactured by Hodogaya Chemical Co., Ltd.) 1.5 parts Cyclohexanone 140 parts Propylene glycol monomethyl ether acetate 140 parts Additive (manufactured by ADEKA Corporation) "Adeka Polyether G-400") 5 parts

<Evaluation method of frame part for touch panel front panel>
[Optical density (OD value) measurement]
On one surface of the glass substrate, a pigment-based resist was applied by spin coating, the solvent was removed with a vacuum dryer, and then the entire surface was exposed to 200 mJ by a proximity exposure method (ultra-high pressure mercury lamp). Then, _Na 2 CO ₃ (sodium carbonate), NaHCO ₃ and developed with an alkaline aqueous solution mixed with (sodium bicarbonate) was subjected to heat treatment at 235 ° C × 20 minutes. Further, a carbon-based resist was applied thereon by spin coating, the solvent was removed with a vacuum dryer, and then the entire surface was exposed to 200 mJ by a proximity exposure method (ultra-high pressure mercury lamp). Then, _Na 2 CO ₃ (sodium carbonate), NaHCO ₃ and developed with an alkaline aqueous solution mixed with (sodium bicarbonate), a heat treatment of 235 ° C × 20 minutes, the optical density (OD value) measurement substrate Produced. The obtained substrate was subjected to optical density (OD value) measurement serving as a light-shielding index using Macbeth D-200II.

[Reflectance measurement]
On one surface of the glass substrate, a pigment-based resist was applied by spin coating, the solvent was removed with a vacuum dryer, and then the entire surface was exposed to 200 mJ by a proximity exposure method (ultra-high pressure mercury lamp). Then, _Na 2 CO ₃ (sodium carbonate), NaHCO ₃ and developed with an alkaline aqueous solution mixed with (sodium bicarbonate) was subjected to heat treatment at 235 ° C × 20 minutes. Further, a carbon-based resist was applied thereon by spin coating, the solvent was removed with a vacuum dryer, and then the entire surface was exposed to 200 mJ by a proximity exposure method (ultra-high pressure mercury lamp). Then, _Na 2 CO ₃ (sodium carbonate), NaHCO ₃ and developed with an alkaline aqueous solution mixed with (sodium bicarbonate), a heat treatment of 235 ° C × 20 minutes, the optical density (OD value) measurement substrate Produced. The obtained substrate was subjected to diffuse reflection measurement including specular reflection from an alkali-free glass substrate surface using an integrating sphere using an ultraviolet-visible spectrophotometer (U-4100 manufactured by Hitachi High-Tech). The obtained reflected light characteristics are shown in FIG. Table 1 shows the reflection hue (C light source) in the CIE 1976 (L * a * b *) color system.

[Energization test]
In order to confirm whether the touch panel sensor manufactured by the present invention has no problem as an electric circuit, an energization test was performed. A touch panel sensor in which an extraction wiring was formed using a photomask having a line and space (L / S) size of 30 μm / 30 μm was produced. Conductivity was confirmed between the connection part of the external circuit of the lead-out wiring of the touch panel sensor and the transparent electrode 7 and the transparent electrode 8 using a tester (Digital Multi Tester MCD-007 manufactured by Ohm Electric Co., Ltd.). As a judgment criterion, a case where conduction was confirmed was rated as ◯, and a case where poor conduction occurred was marked as x.

(Examples 2-6, Comparative Example 1)
In Examples 2 to 6 and Comparative Example 1, the first light-shielding layer 3 (A) is formed using the pigment-based resists 2 to 5 shown in Table 1 as the red pigment, blue pigment, and yellow pigment. Except for having done, it carried out similarly to Example 1, and obtained the frame part 3 for touchscreen front plates. However, the thickness of the second light-shielding layer 3 (B) was 1.4 μm in Examples 2 to 5 as in Example 1, but 0.8 μm in Example 6, and 0 in Comparative Example 1. .6 μm.

In Table 1, PB15: 3, PR177, and PY150 represent the following pigments, respectively.
Blue pigment: C.I. I. Pigment Blue 15: 3
(BASF, IRGALITE Blue GBP)
Red pigment: C.I. I. Pigment Red 177
(BASF “Chromophthal Red A2B”)
Yellow pigment: C.I. I. Pigment Yellow 150
(BASF, “Pariotor Yellow DT1200”)

(Comparative Example 2)
As a comparative example for verifying the effect of the present invention, a mixture having the following composition was stirred and mixed so as to be uniform, and then a carbon resist having a pigment concentration of 47% was prepared to form the frame portion 3 shown in FIG. .

[Carbon resist]
Carbon black dispersion (“TPBK-234C” manufactured by Gokoku Color Co., Ltd.) 161 parts Propylene glycol monomethyl ether acetate solution of acid anhydride polycondensate of epoxy acrylate having a fluorene skeleton (resin solid content concentration = 56.1% by mass) , Nippon Steel Chemical Co., Ltd. V259ME) 40 parts Polyfunctional polymerizable monomer (Osaka Organic Industry Co., Ltd. “UADPH80A (molecular weight 764)”) 10 parts Photoinitiator (BASF “Irgacure OXE02”) 0.3 Part Sensitizer 4,4'-bis (diethylamino) benzophenone ("EAB-F" manufactured by Hodogaya Chemical Co., Ltd.) 1.5 parts Cyclohexanone 140 parts Propylene glycol monomethyl ether acetate 140 parts Additive (manufactured by ADEKA Corporation) "Adeka Polyether G-400") 5 parts

  Table 2 shows measured values of OD values, values per unit film thickness, and energization test results in the respective examples and comparative examples described above.

  In any of the examples, the actual measurement value of the OD value of the light shielding layer 3 composed of the first light shielding layer (A) and the second light shielding layer (B) was 3 or more, and sufficient light shielding properties were obtained. Thus, in order to make the OD value 3 or more, the OD value per 1.0 μm thickness of the pigment-based resist is preferably 0.5 or more, particularly preferably 0.7 or more. Furthermore, in Comparative Example 1, since the metal wiring 6 was seen through the first light shielding layer (A) and the second light shielding layer (B), the OD value of the second light shielding layer (B) was set to 2 or more. It is preferable.

  FIG. 17A shows the light transmission characteristics of the pigment resists 1 to 5 used in Examples 1 to 6 and the carbon resist film thickness of 1.4 μm used in Comparative Example 2. FIG. 17B shows reflected light characteristics of the frame portion 3 of Examples 1 to 5 and Comparative Example 2. In order to make the reflected light characteristics shown in FIG. 17B easy to understand for each example, FIGS. 17C, 17D, 17E, 17F, and 17G are shown in FIGS. 5 and the reflected light characteristics of Comparative Example 2 are extracted from FIG. 17B and shown as a line graph.

  From FIG. 17A, in any of the examples, the transmittance is 80% or more in the infrared range of wavelength 850 nm to 1000 nm. In any of the examples, since the transmittance is 30% or less in the visible light range of wavelength 400 nm to 750 nm, the first light shielding layer (A) constitutes a pseudo black layer.

  According to FIG.17 (b), compared with the comparative example 2 using only a carbon-type resist, in Examples 1-5 using the pigment resist containing an at least 2 or more types of pigment, wavelength 400nm -750 nm or less The tendency for the reflectance in the range to become smaller could be confirmed. Moreover, it was shown that the reflection hue can be controlled in accordance with the black display hue on the display screen by appropriately selecting the pigment type.

  In each of the above-described embodiments, the touch panel sensor 1 in which the metal wiring 6 and the transparent electrodes 7 and 8 are disposed and the liquid crystal panel 21 in which the color filter 24 is disposed are attached and integrated. The front plate of the present invention is an on-cell type in which the metal wiring and the transparent electrode are arranged on one surface of the glass and the color filter 24 is arranged on the other surface, and the touch panel sensor and the liquid crystal panel are integrated. It can also be applied to.

  The present invention can be used as a position input device for an electronic device such as a mobile phone or a portable information terminal.

DESCRIPTION OF SYMBOLS 1 Touch panel sensor 2,102 Cover glass 3,103 Frame part 4 Jumper wiring 5 1st insulating film 6 Metal wiring 7, 8 Transparent electrode 9 Insulating protective film 10, 110 Display area 11 2nd insulating film 21 Liquid crystal panel 22, 27 Polarizing plate 23 Front glass 24 Color filter 25 Liquid crystal / electrode / TFT layer 26 Rear glass 28 Spacer 29 Air gap layer 31 Touch sensor glass 140 Infrared communication window 141 Infrared transmission film 150 Proximity sensor window

Claims (18)

A front panel for a capacitive touch panel used for a touch panel,
The front plate is provided with a frame portion that is formed on a peripheral portion on one surface thereof and divides a display area of a predetermined shape,
The front plate is made of a transparent material,
The frame part is a pseudo black layer containing a mixture of two or more kinds of pigments and having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. A static structure characterized by comprising a laminated structure of a light shielding layer and (A) the second light shielding layer, which is formed so as to overlap with the first light shielding layer (A) and has an optical density (OD value) of 2 or more. Front panel for capacitive touch panel. A front panel for a capacitive touch panel used for a touch panel,
The front plate is provided with a frame portion that is formed on a peripheral portion on one surface thereof and divides a display area of a predetermined shape,
The front plate is made of a transparent material,
The frame portion is made of a material that transmits infrared rays, and is formed so as to overlap the (A) first light shielding layer formed on the front plate side and the (A) first light shielding layer, and an optical density ( (B) The front panel for a capacitive touch panel, wherein the (B) second light-shielding layer has an opening.   The electrostatic material according to claim 2, wherein the infrared ray-transmitting material includes a mixture of two or more types of pigments, and is a pseudo black layer having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. Front plate for capacitive touch panel.   4. The capacitive touch panel according to claim 1, wherein the average light transmittance in the wavelength range of 850 nm to 1000 nm of the (A) first light shielding layer is 80% or more. 5. Front plate.   5. The static electricity according to claim 1, wherein the (A) first light-shielding layer contains at least a red-based and blue-based pigment, or a red-based, blue-based, and yellow-based pigment. Front panel for capacitive touch panel.   6. The capacitive touch panel front plate according to claim 1, wherein an optical density (OD value) of the frame portion is 3 or more.   The front surface plate for a capacitive touch panel according to any one of claims 1 to 6, wherein a cut surface of the frame portion by a surface orthogonal to the front surface plate has a forward tapered shape. A display device,
A display panel having a pixel region in which a plurality of pixels are arranged in a matrix, and forming pixels in the pixel region based on an input signal;
A touch panel sensor attached to cover the pixel region;
A display device comprising: the capacitive touch panel front plate according to claim 1. The display device includes an infrared receiving unit or / and an infrared transmitting unit that receives or / and transmits infrared rays,
The display device according to claim 8, wherein the infrared receiving unit and / or the infrared transmitting unit is provided below a region having a frame portion formed on the front plate. An integrated sensor board with a front panel and a capacitive touch panel sensor,
A transparent front plate,
A frame portion that is formed on a peripheral portion on one surface of the front plate and divides a display area of a predetermined shape;
A sensor layer laminated on the one surface of the front plate and the frame portion, and integrated with the front plate;
The sensor layer includes a first transparent electrode and a second transparent electrode that are insulated from each other,
The frame part is a pseudo black layer containing a mixture of two or more kinds of pigments and having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. The light-shielding layer and the (A) first light-shielding layer are formed so as to overlap with each other, and the optical density (OD value) is 2 or more. Body sensor board. An integrated sensor board with a front panel and a capacitive touch panel sensor,
A transparent front plate,
A frame portion that is formed on a peripheral portion on one surface of the front plate and divides a display area of a predetermined shape;
A sensor layer laminated on the one surface of the front plate and the frame portion, and integrated with the front plate;
The sensor layer includes a first transparent electrode and a second transparent electrode that are insulated from each other,
The frame portion is made of a material that transmits infrared rays, and is formed so as to overlap the (A) first light shielding layer formed on the front plate side and the (A) first light shielding layer, and an optical density ( (B) The integrated sensor substrate, wherein the (B) second light-shielding layer has an opening.   12. The integrated type according to claim 11, wherein the infrared ray-transmitting material includes a mixture of two or more types of pigments, and is a pseudo black layer having a light transmittance of a wavelength of 400 nm to a wavelength of 750 nm of 30% or less. Sensor board.   13. The integrated sensor substrate according to claim 10, wherein the (A) first light shielding layer has an average light transmittance of 80% or more in a wavelength range of 850 nm to 1000 nm.   The said (A) 1st light shielding layer contains the pigment of at least red type | system | group and a blue type | system | group, or a red type | system | group, a blue type | system | group, and a yellow type | system | group, The one of Claim 10 thru | or 13 characterized by the above-mentioned. Body sensor board.   The integrated sensor substrate according to claim 10, wherein an optical density (OD value) of the frame portion is 3 or more.   16. The integrated sensor substrate according to claim 10, wherein a cut surface of the frame portion by a surface orthogonal to the front plate has a forward tapered shape. A display device,
A display panel having a pixel region in which a plurality of pixels are arranged in a matrix, and forming pixels in the pixel region based on an input signal;
A display device comprising: the integrated sensor substrate according to claim 10, which is attached so as to cover the pixel region. The display device includes an infrared receiving unit or / and an infrared transmitting unit that receives or / and transmits infrared rays,
The display device according to claim 17, wherein the infrared receiving unit and / or the infrared transmitting unit is provided below a region having a frame portion formed on the front plate.

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