TWI574191B - Sensing device - Google Patents

Description

Sensing device

The invention relates to a sensing device.

In recent years, with the rapid development and application of information technology, wireless mobile communication and information appliances, many information products have been input devices such as traditional keyboards or mice for the purpose of being more convenient, lighter and more humanized. It is converted to use a sensing device such as a touch panel as an input device. When the touch panel is applied to a display device, the touch panel needs to be disposed in front of the display device for the user to operate and use with the screen, which is easy to affect the display screen of the display device. Therefore, when the touch panel is applied to a display device, the visual effect of the display screen is an issue to be improved.

An embodiment of the present invention provides a sensing device that helps improve display quality of a display device when applied to a display device.

A sensing device according to an embodiment of the invention includes a substrate, a light shielding layer, a light guiding layer and an intermediate layer. The light shielding layer is disposed on the substrate, and the light shielding layer has a plurality of first openings. The light guiding layer is disposed on the substrate and has a plurality of second openings. The projected area of each of the first openings overlaps the projected area of one of the second openings, and the light shielding layer is located between the light guiding layer and the substrate. The intermediate layer is disposed between the light shielding layer and the light guiding layer, wherein at least one of the light shielding layer and the light guiding layer is electrically conductive and includes a plurality of first electrode patterns separated from each other.

A sensing device according to an embodiment of the invention includes a substrate, a light shielding layer, a light guiding layer, a cover layer, and a first conductive layer. The light shielding layer is disposed on the substrate and has a plurality of first openings. The light guiding layer is disposed on the substrate. The light shielding layer is located between the light guiding layer and the substrate. The light guiding layer has a plurality of second openings, and a projected area of each of the first openings overlaps a projected area of one of the second openings. The cover layer covers the light guiding layer and fills the second opening, and the refractive index of the light guiding layer is smaller than the refractive index of the covering layer. The first conductive layer is disposed between the cover layer and the substrate, wherein the first conductive layer includes a plurality of first electrode patterns separated from each other.

The sensing device according to an embodiment of the invention has a light guiding layer, and the sensing device is applied to the display device, which helps to improve the display effect of the display device.

In order to make the invention more apparent, the following detailed description of the embodiments and the accompanying drawings are set forth below.

1 is a schematic view of a sensing device according to a first embodiment of the present invention, and FIG. 2A is a cross-sectional view of the sensing device of FIG. 1 taken along line I-I. Referring to FIG. 1 and FIG. 2A , the sensing device 10 includes a substrate 100 , a light shielding layer 110 , a light guiding layer 120 , and an intermediate layer 130 , wherein the light shielding layer 110 is located between the light guiding layer 120 and the substrate 100 , and the intermediate layer 130 is located in the light shielding layer. Between the layer 110 and the light guiding layer 120. In the embodiment, the light shielding layer 110 has a plurality of first openings 110A, and the first openings 110A are arranged in an array on the substrate 100. The light guiding layer 120 has a plurality of second openings 120A, and a projected area of each of the second openings 120A is overlapped with a projected area of one of the first openings 110A, wherein the projected area is illuminated by, for example, a light beam perpendicular to the substrate. The contour of the opening projects the area enclosed on the substrate. In the case of FIG. 1, each of the second openings 120A has a size close to that of the corresponding one of the first openings 110A, and the contours of the two openings may overlap in FIG. However, in other embodiments, each of the second openings 120A and the corresponding one of the first openings 110A may have different sizes or shapes. For example, the projected area of the first opening 110A may have more than 50% overlapping the projected area of the corresponding second opening 120A. In addition, the light shielding layer 110 and the light guiding layer 120 may be composed of a conductive material, such as a metal, in this embodiment, and the intermediate layer 130 disposed between the light shielding layer 110 and the light guiding layer 120 may provide an insulating effect, and thus the light shielding layer 110 The light guiding layer 120 is patterned to form a touch capacitor between the light shielding layer 110 and the light guiding layer 120 as a touch electrode.

In addition, FIG. 2B is a variant embodiment of the sensing device of FIG. 2A. In FIG. 2B, the sensing device 10 includes a substrate 100, a light shielding layer 110, a light guiding layer 120, and an intermediate layer 130', wherein the intermediate layer 130' may be a color filter layer, and the intermediate layer 130' may include a plurality of color filters. Light pattern 132. That is, the intermediate layer 130' can provide a color filtering effect in addition to providing an insulating effect.

3A is a top plan view of a light shielding layer of the sensing device of FIG. 1. As can be seen from FIG. 1 and FIG. 3A, the light shielding layer 110 includes a plurality of first electrode patterns 112 that are independent of each other. Each of the first electrode patterns 112 may be a pattern extending along the first direction D1, and the pattern shape may be, for example, a strip shape, a bamboo shape, a wave shape, a zigzag shape, or the like, and is physically independent of the other first electrode patterns. 112. Therefore, the plurality of first electrode patterns 112 may be electrically independent of each other.

3B is a top plan view of the light guiding layer of the sensing device of FIG. 1. As can be seen from FIG. 1 and FIG. 3B, the light guiding layer 120 includes a plurality of second electrode patterns 122 separated from each other. Each of the second electrode patterns 122 may be a pattern extending along the second direction D2, and the pattern shape may be, for example, a strip shape, a bamboo shape, a wave shape, a zigzag shape, or the like, and is physically independent of the other second electrode patterns. 122. Therefore, the plurality of second electrode patterns 122 may be electrically independent of each other. In addition, as can be seen from FIG. 1 , the first direction D1 and the second direction D2 may intersect each other, and the first electrode patterns 112 may be staggered with the second electrode patterns 122 . As can be seen from FIG. 2, the intermediate layer 130 having an insulating effect may be located between the first electrode patterns 112 and the second electrode patterns 122, and the sensing device 10 may form a contact between the first electrode patterns 112 and the second electrode patterns 122. Control the capacitor to achieve touch sensing.

3C is a partial schematic view of a light guiding layer according to an embodiment of the invention. As shown in FIG. 2 and FIG. 3C , in the embodiment, the light guiding layer 120 can be a three-dimensional light guiding structure, and the light guiding layer 120 has an inclined sidewall 120S in each second opening 120A such that the area of the second opening 120A is The side close to the substrate 100 gradually increases away from the substrate 100. In addition, the angle Θ between the inclined side wall 120S and the top surface of the intermediate layer 110 is less than 90 degrees, for example, 55 degrees to 85 degrees. In an embodiment, as shown in FIG. 4, a cover layer IM and a display layer DL may be disposed on the sensing device 10 to constitute the display device 1. The cover layer IM may cover the light guide layer 120 and have a flat surface for the display layer DL, and the display layer DL may be a self-luminous display layer or a non-self-luminous display layer. The self-luminous display layer may include, for example, an organic light-emitting layer or the like, and the non-self-luminous display layer may include, for example, a liquid crystal layer, an electrophoretic display layer, or an electrowetting display layer or the like. When the display layer DL is a non-self-luminous display layer, the display device 1 may have a light source to provide light for display.

In an embodiment, the light guiding layer 120 may be made of a metal material having light reflecting properties. Thus, the light L emitted from the display layer DL can be reflected on the inclined side wall 120S and emitted toward the first opening 110A. In other words, when the display device 1 displays a screen, the light ray L can be concentratedly emitted from the first opening 110A via the guiding action of the light guiding layer 120. Therefore, the display contrast and brightness exhibited by the display device 1 can be improved. When the brightness of the surrounding environment is large, the user can still see the display screen of the display device 1, thereby improving the display performance of the display device 1.

5 is a top plan view of a sensing device according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view of the sensing device of FIG. 5 taken along line II-II. Referring to FIG. 5 and FIG. 6 simultaneously, the sensing device 20 includes a substrate 100, a light shielding layer 110, a light guiding layer 220, an intermediate layer 130, and a cover layer 240. In this embodiment, the design and material of the substrate 100, the light shielding layer 110 and the intermediate layer 130 may be similar to the foregoing embodiments, and the same component symbols may be used. The intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B. In addition, the light guiding layer 220 of the embodiment can be made of an insulating material, and the light guiding layer 220 is not used as an electrode for touch sensing. In other words, the sensing device 20 can be a single-layer electrode type touch panel, and the touch electrodes are implemented by the first electrode pattern 112 of the light shielding layer 110, and can also be referred to as an OLS (One Layer Solution) architecture. The light guiding layer 220 of the present embodiment is not used as an electrode for touch control, and thus the light guiding layer 220 may not need to be patterned into a plurality of independent electrode patterns but a continuous and repeating grid-like structure. The outline of the first electrode pattern 112 is illustrated in a square outline in the present embodiment, but in other embodiments, the outline of the first electrode pattern 112 is not particularly limited. For example, the outline of the first electrode pattern 112 may be an arbitrary polygon. In addition, each of the first electrode patterns 112 of the light shielding layer 110 may constitute one sensing unit to perform a self-capacitive sensing function. However, the first electrode pattern 112 of the light shielding layer 110 may also have a portion as a driving electrode and another portion as a sensing electrode such that the driving electrode and the sensing electrode are disposed adjacent to each other for a mutual capacitive sensing function.

As shown in FIG. 5, the light guiding layer 220 may be a continuous uninterrupted grid pattern in the upper view. However, similar to the foregoing embodiment, the light guiding layer 220 has a plurality of second openings 220A, and the projected areas of the second openings 220A are respectively overlapped with the projected area of one of the first openings 110A of the light shielding layer 110. The projected area herein refers to the area in which each member is vertically projected onto the substrate 100. In addition, the cover layer 240 covers the light guide layer 220 and is filled in the second opening 220A. The light guide layer 220 has a sloped sidewall 220S at the second opening 220A. The refractive index of the light guiding layer 220 is smaller than that of the cover layer 240, and the refractive index difference between the refractive index of the cover layer IM and the light guiding layer 220 may be, for example, 0.3 or more. In an embodiment, the light guide layer 220 may have a refractive index of 1.0 to 1.7, and the cover layer 240 may have a refractive index of 1.3 to 2.0. In this embodiment, the insulating light guide layer 220 has a refractive index smaller than the cover layer 240 by selecting a material. For example, the difference between the refractive index of the light guiding layer 220 and the cover layer 240 may be 0.3, and the angle between the inclined sidewall 220S and the top surface of the intermediate layer 130 is less than 90 degrees, for example, 55 degrees to 85 degrees. When the sensing device 20 is applied to the display device 1 as shown in FIG. 4 and replaces the sensing device 10 of FIG. 4, the arrangement of the light guiding layer 220 and the cover layer 240 can guide the light L emitted from the display layer DL to The first opening 110A is emitted to enhance the display performance of the display device.

7 is a top plan view of a sensing device according to a third embodiment of the present invention, and FIG. 8 is a cross-sectional view of the sensing device of FIG. 7 taken along line III-III. Referring to FIG. 7 and FIG. 8 simultaneously, the sensing device 30 may include components of the sensing device 20 of FIG. 5 , and further includes a conductive layer 350 and a reflective layer 360 . The reflective layer 360 is disposed between the conductive layer 350 and the light guiding layer 220 , and the conductive layer 350 covers the light guiding layer 220 such that the light guiding layer 220 is disposed between the conductive layer 350 and the intermediate layer 130 . The substrate 100, the light shielding layer 110, the light guiding layer 220, the intermediate layer 130, and the cover layer 240 of the present embodiment can be understood by referring to the related descriptions of FIG. 5 and FIG. 6 . Meanwhile, the intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B. In this embodiment, the conductive layer 350 includes a plurality of second electrode patterns 352, which can be used as electrodes for touch sensing. Each of the second electrode patterns 352 may be, for example, a stripe pattern. Each of the first electrode patterns 112 of the light shielding layer 110 extends along the first direction D1, and each of the second electrode patterns 352 of the conductive layer 350 extends along the second direction D2, and the first direction D1 may intersect in the second direction D2. The intermediate layer 130 can be disposed between the first electrode pattern 112 and the second electrode pattern 352, and the sensing device 30 can form a touch capacitor between the first electrode pattern 112 and the second electrode pattern 352 to achieve touch. Sensing function. That is, the sensing device 30 of the embodiment may be a double-layer touch electrode type sensing device. In this embodiment, the conductive layer 350 may be made of a transparent conductive material, and the conductive layer 350 may have a partial area in the second opening 220A. The reflective layer 360 includes a plurality of reflective patterns 362 corresponding to the second electrode patterns 352. In FIG. 8, the reflective layer 360 can substantially cover the top surface 220T of the light guiding layer 220 and the inclined sidewall 220S, and has a plurality of reflective layer openings 360A, wherein the reflective layer opening 360A overlaps the second opening 220A for light to penetrate. . Specifically, the reflective layer 360 may be disposed between the conductive layer 350 and the light guiding layer 220 without limitation. In other words, in other embodiments, the conductive layer 350 may be disposed between the reflective layer 360 and the light guiding layer 220, that is, the stacking order of the conductive layer 350 and the reflective layer 360 in FIG. 8 may be interchanged.

9 is a variation of the sensing device of FIG. 8. Referring to FIG. 9 , the conductive layer 350I of the sensing device 30I has a plurality of third openings 350A, which may be made, for example, of a metal material. The conductive layer 350I can provide a function of reflecting light so that the sensing device 30I can selectively There is no reflective layer 360 in Figures 7 and 8. The projected area of each of the third openings 350A on the substrate 100 may overlap the projected area of one of the first openings 110A on the substrate 100 and the projected area of one of the second openings 220A on the substrate 100. In addition, as can be seen from FIG. 9, the conductive layer 350I can substantially cover the top surface 220T of the light guiding layer 220 and the inclined sidewall 220S. The first opening 110A, the second opening 220A and the third opening 350A may have the same size or not Same, but at least partially overlapped. In this embodiment, the material of the conductive layer 350I may be a conductive material having reflective properties. When the sensing device 30I is applied to the display device, the conductive layer 350I may reflect light from the display panel to improve the display light efficiency of the overall device.

Figure 10 is a variation of the sensing device of Figure 9. Referring to FIG. 10, the conductive layer 350II of the sensing device 30II has a plurality of third openings 350B, which may be made, for example, of a metal material. The conductive layer 350II can provide a function of reflecting light so that the sensing device 30II can be selectively There is no reflective layer 360 in Figures 7 and 8. The projected area of each of the third openings 350B may overlap the projected area of one of the first openings 110A and the projected area of one of the second openings 220A. As can be seen from FIG. 10, the conductive layer 350II can substantially cover the top surface 220T of the light guiding layer 220. In this embodiment, the material of the conductive layer 350II may be a conductive material having reflective properties. When the sensing device 30II is applied to the display device, the conductive layer 350II may reflect light from the display panel to improve the display light efficiency of the overall device.

Figure 11 is a variation of the sensing device of Figure 9. Referring to FIG. 11 , the conductive layer 350III of the sensing device 30III is located between the light guiding layer 220 and the intermediate layer 130 and has a plurality of third openings 350C. The projected area of each of the third openings 350C may overlap the projected area of one of the first openings 110A and the projected area of one of the second openings 220A.

12 is a top plan view of a sensing device according to a fourth embodiment of the present invention, and FIG. 13 is a cross-sectional view of the sensing device of FIG. 12 taken along line IV-IV. Referring to FIG. 12 and FIG. 13 simultaneously, the sensing device 40 includes a substrate 100, a light shielding layer 410, a light guiding layer 120 and an intermediate layer 130. In this embodiment, the design and material of the substrate 100, the light guiding layer 120 and the intermediate layer 130 may be similar to the foregoing embodiments, and thus are denoted by the same component symbols. The intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B. In addition, the light shielding layer 410 of the embodiment can be made of an insulating material, so the light shielding layer 410 is not used as an electrode for touch sensing. As shown in FIG. 12, the light shielding layer 410 may be a continuous uninterrupted grid-like pattern in the upper view. The light shielding layer 410 has a plurality of first openings 410A, and the projected areas of the second openings 120A on the substrate 100 may respectively overlap the projected area of one of the first openings 410A of the light shielding layer 410 on the substrate 100. The sensing device 40 can be a single-layer electrode type (eg, OLS) touch panel, and the touch electrodes are implemented by the second electrode pattern 122 of the light guiding layer 120. The light shielding layer 410 of the present embodiment is not used as an electrode for touch control, and thus the light shielding layer 410 may not need to be patterned into a plurality of independent electrode patterns. The outline of the second electrode pattern 122 is illustrated in a square outline in the present embodiment, but in other embodiments, the outline of the second electrode pattern 122 of the light guiding layer 120 is not particularly limited. For example, the outline of the second electrode pattern 122 may be an arbitrary polygon. In addition, each of the second electrode patterns 122 of the light guiding layer 120 may constitute one sensing unit to perform a self-capacitive sensing function. However, the second electrode pattern 122 of the light guiding layer 120 may also select a portion as a driving electrode and another portion as a sensing electrode such that the driving electrode and the sensing electrode are disposed adjacent to each other for mutual capacitive sensing function.

14 is a top plan view of a sensing device according to a fifth embodiment of the present invention, and FIG. 15 is a cross-sectional view of the sensing device of FIG. 14 taken along line V-V. 14 and FIG. 15 , the sensing device 50 may include the components of the sensing device 40 of FIG. 12 , and further includes a conductive layer 550 , wherein the conductive layer 550 is sandwiched between the light shielding layer 410 and the intermediate layer 130 . The substrate 100, the light shielding layer 410, the light guiding layer 120 and the intermediate layer 130 of the present embodiment can be understood by referring to the related descriptions of FIG. 12 and FIG. 13 for their structures, materials and functions. The intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B. In this embodiment, the conductive layer 550 includes a plurality of first electrode patterns 552 and can be used as touch sensing electrodes. Each of the first electrode patterns 552 may be, for example, a stripe pattern and extend along the first direction D1. Each of the second electrode patterns 122 of the light guiding layer 120 extends along the second direction D2, and the first direction D1 may intersect in the second direction D2. The intermediate layer 130 for isolation is located between the first electrode patterns 552 and the second electrode patterns 122, and the sensing device 50 can form a touch capacitance between the first electrode patterns 552 and the second electrode patterns 122 to achieve touch. Sensing function. The sensing device 50 of the embodiment can be a double-layer touch electrode type touch panel. In the present embodiment, the conductive layer 550 may be made of a transparent conductive material. Therefore, the conductive layer 550 has a third opening 520A corresponding to the first opening 410A in FIG. 15, but may have a partial conductive layer 550 in other embodiments. Positioned in the first opening 410A. In addition, FIG. 16 is a modified embodiment of the sensing device of FIG. Referring to FIG. 16 , the sensing device 50I can be similar to the sensing device 50 , and the light shielding layer 410 of the sensing device 50I is located between the conductive layer 550I and the intermediate layer 130 .

17 is a top plan view of a sensing device according to a sixth embodiment of the present invention, and FIG. 18 is a cross-sectional view of the sensing device of FIG. 17 taken along line VI-VI. Referring to FIG. 17 and FIG. 18 , the sensing device 60 includes a substrate 100 , a light shielding layer 410 , a light guiding layer 220 , a cover layer 240 , and a conductive layer 650 . The light shielding layer 410 can be made of an insulating material, disposed on the substrate 100, and has a plurality of first openings 410A. The light guiding layer 220 may also be made of an insulating material and disposed on the substrate 100. The light shielding layer 410 is located between the light guiding layer 220 and the substrate 100. The light guiding layer 220 has a plurality of second openings 220A, and a projected area of each of the first openings 410A overlaps a projected area of one of the second openings 220A. The cover layer 240 covers the light guide layer 220 and fills the second opening 220A, and the refractive index of the light guide layer 220 is smaller than the refractive index of the cover layer 240. In addition, the conductive layer 650 is disposed between the cover layer 240 and the substrate 100 and has a plurality of third openings 650A corresponding to the first openings 410A, wherein the conductive layer 650 may include a plurality of first electrode patterns 652 separated from each other. In other embodiments, the conductive layer 650 may be disposed between the light guiding layer 220 and the intermediate layer 130 or between the light shielding layer 410 and the intermediate layer 130. Alternatively, the light shielding layer 410 may be selectively disposed between the intermediate layer 130 and the conductive layer 650. The intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B.

In this embodiment, the conductive layer 650 is made of a conductive material, and the sensing device 60 is a single-layer electrode type touch panel, wherein each of the first electrode patterns 652 can perform self-capacitance sensing. In addition, the intermediate layer 130 of the sensing device 60 may be disposed between the light guiding layer 220 and the light shielding layer 410, and the insulated light guiding layer 220 is not used as an electrode for touch. In this embodiment, the insulating light guide layer 220 has a refractive index smaller than the cover layer 240 by selecting a material. Also, the light guiding layer 220 may have inclined sidewalls 220S. When the sensing device 60 is applied to the display device 1 as shown in FIG. 4 and replaces the sensing device 10 of FIG. 4, the arrangement of the light guiding layer 220 and the cover layer 240 can guide the light L emitted from the display layer DL to The first opening 410A is emitted to enhance the display performance of the display device. In addition, the light shielding layer 410 of the present embodiment may not be used as an electrode for touch.

19 is a top plan view of a sensing device according to a seventh embodiment of the present invention, and FIG. 20 is a cross-sectional view of the sensing device of FIG. 19 taken along line VII-VII. Referring to FIG. 19 and FIG. 20 simultaneously, the sensing device 70 includes a substrate 100, a light shielding layer 410, a light guiding layer 220, an intermediate layer 130, a cover layer 240, a first conductive layer 750, and a second conductive layer 760. The substrate 100, the light shielding layer 410, the light guiding layer 220, the intermediate layer 130, and the cover layer 240 may be similar to the sensing device 60 of FIG. 17, and thus will not be further described. The intermediate layer 130 may include a plurality of color filter patterns with reference to the intermediate layer 130' of FIG. 2B. In an embodiment, each of the second openings 220A and the corresponding one of the first openings 410A may have different sizes or shapes. For example, the projected area of the first opening 410A may have more than 50% overlapping the projected area of the corresponding second opening 220A.

In the embodiment, the first conductive layer 750 can be disposed between the substrate 100 and the intermediate layer 130 and includes a plurality of first electrode patterns 752. The second conductive layer 760 may be disposed between the intermediate layer 130 and the cover layer 240 and include a plurality of second electrode patterns 762. Each of the first electrode patterns 752 may be, for example, a strip-like pattern and extend along the first direction D1 and the second electrode patterns 762 may each be, for example, a strip-like pattern and extend along the second direction D2, wherein the first direction D1 may Intersect in the second direction D2. The intermediate layer 130 for isolation is located between the first electrode patterns 752 and the second electrode patterns 762. Therefore, the sensing device 70 can form a touch capacitance between the first electrode patterns 752 and the second electrode patterns 762 to achieve touch. Control sensing function. The sensing device 70 of the embodiment may be a double-layer touch electrode type touch panel.

The sensing device according to an embodiment of the present invention has a light guiding layer and can guide the display light to be emitted from the opening intensively when applied to the display device. The sensing device according to an embodiment of the present invention is applied to a display device to improve display contrast of the display device. In addition, in the sensing device of some embodiments, at least one of the light shielding layer and the light guiding layer may be made of a conductive material, and the optical shielding or light guiding function may be provided as an electrode for touch control.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims and their equivalents.

1‧‧‧ display device

10, 20, 30, 30I, 30II, 30III, 40, 50, 50I, 60, 70‧‧‧ sensing devices

100‧‧‧Substrate

110, 410‧‧‧ shading layer

110A, 410A‧‧‧ first opening

112, 552, 652, 752‧‧‧ first electrode pattern

120, 220‧‧‧Light guide layer

120A, 220A‧‧‧ second opening

120S, 220S‧‧‧ sloping side walls

122, 352, 762‧‧‧ second electrode pattern

130, 130’‧‧‧ middle layer

220T‧‧‧ top surface

240‧‧‧ Coverage

350, 350I, 350II, 350III, 550, 650‧‧‧ conductive layers

350A, 350B, 350C, 520A, 650A‧‧‧ third opening

360‧‧‧reflective layer

360A‧‧‧reflection layer opening

362‧‧‧Reflective pattern

750‧‧‧First conductive layer

760‧‧‧Second conductive layer

D1‧‧‧ first direction

D2‧‧‧ second direction

DL‧‧‧ display layer

L‧‧‧Light

Lines I-I, II-II, III-III, IV-IV, V-V, VI-VI, VII-VII‧‧

IM‧‧‧ overlay

Θ‧‧‧ angle

1 is a schematic view of a sensing device according to a first embodiment of the present invention. 2A is a cross-sectional view of the sensing device of FIG. 1 taken along line I-I. 2B is a variant embodiment of the sensing device of FIG. 2A. 3A is a top plan view of a light shielding layer of the sensing device of FIG. 1. 3B is a top plan view of the light guiding layer of the sensing device of FIG. 1. 3C is a partial schematic view of a light guiding layer according to an embodiment of the invention. 4 is a cross-sectional view of a display device in accordance with an embodiment of the present invention. FIG. 5 is a top plan view of a sensing device according to a second embodiment of the present invention. 6 is a cross-sectional view of the sensing device of FIG. 5 taken along line II-II. Figure 7 is a top plan view of a sensing device in accordance with a third embodiment of the present invention. Figure 8 is a cross-sectional view of the sensing device of Figure 7 taken along line III-III. 9 is a variation of the sensing device of FIG. 8. Figure 10 is a variation of the sensing device of Figure 9. Figure 11 is a variation of the sensing device of Figure 9. Figure 12 is a top plan view of a sensing device in accordance with a second embodiment of the present invention. Figure 13 is a cross-sectional view of the sensing device of Figure 12 taken along line IV-IV. Figure 14 is a top plan view of a sensing device in accordance with a fifth embodiment of the present invention. Figure 15 is a cross-sectional view of the sensing device of Figure 14 taken along line V-V. 16 is a variation of the sensing device of FIG. 15. Figure 17 is a top plan view of a sensing device in accordance with a sixth embodiment of the present invention. Figure 18 is a cross-sectional view of the sensing device of Figure 17 taken along line VI-VI. Figure 19 is a top plan view of a sensing device in accordance with a seventh embodiment of the present invention. Figure 20 is a cross-sectional view of the sensing device of Figure 19 taken along line VII-VII.

100‧‧‧Substrate

110‧‧‧Lighting layer

110A‧‧‧first opening

112‧‧‧First electrode pattern

120‧‧‧Light guide layer

120A‧‧‧second opening

120S‧‧‧ sloping side wall

122‧‧‧Second electrode pattern

130‧‧‧Intermediate

Claims (19)

A sensing device includes: a substrate; a light shielding layer disposed on the substrate, the light shielding layer having a plurality of first openings; a light guiding layer disposed on the substrate and having a plurality of second openings, wherein The projected area of each of the first openings is overlapped with the projected area of one of the second openings, and the light shielding layer is located between the light guiding layer and the substrate; an intermediate layer is disposed between the light shielding layer and the light guiding layer At least one of the light shielding layer and the light guiding layer is electrically conductive and includes a plurality of first electrode patterns separated from each other; and a cover layer covering the light guiding layer and filling the second openings And the refractive index of the light guiding layer is smaller than the refractive index of the covering layer. The sensing device of claim 1, wherein the light guiding layer has a slanted sidewall at each of the second openings such that an area of the second opening gradually increases away from the substrate from a side close to the substrate. The sensing device of claim 1, wherein the light shielding layer and the other of the light guiding layer are also electrically conductive and include a plurality of second electrode patterns separated from each other, each of the first electrode patterns The extending direction is staggered in each of the second electrode patterns. The sensing device of claim 1, further comprising a conductive layer, the conductive layer comprising a plurality of second electrode patterns, the intermediate layer being located between the first electrode patterns and the second electrode patterns And the first electrode patterns are staggered to the second electrode patterns. The sensing device of claim 4, wherein the light shielding layer is electrically conductive and includes the first electrode patterns, and the intermediate layer is located between the conductive layer and the light shielding layer. The sensing device of claim 5, wherein the conductive layer is between the intermediate layer and the light guiding layer. The sensing device of claim 5, wherein the light guiding layer is located between the intermediate layer and the conductive layer. The sensing device of claim 5, wherein a portion of the conductive layer is located in an area of the second openings. The sensing device of claim 4, wherein the light guiding layer is electrically conductive and includes the first electrode patterns, and the intermediate layer is located between the conductive layer and the light guiding layer. The sensing device of claim 9, wherein the conductive layer is between the intermediate layer and the light shielding layer. The sensing device of claim 9, wherein the light shielding layer is located between the intermediate layer and the conductive layer. The sensing device of claim 9, wherein a portion of the conductive layer is located in an area of the first openings. The sensing device of claim 4, wherein each of the second electrode patterns has a plurality of third openings, and a projected area of each of the third openings overlaps a projected area of one of the first openings and one of the first The projected area of the two openings. A sensing device includes: a light shielding layer is disposed on the substrate, the light shielding layer has a plurality of first openings; a light guiding layer is disposed on the substrate, the light shielding layer is located between the light guiding layer and the substrate, and the guiding The light layer has a plurality of second openings, wherein a projected area of each of the first openings overlaps a projected area of one of the second openings; a cover layer covering the light guiding layer and filling the second openings, and the guiding The refractive index of the optical layer is smaller than the refractive index of the cover layer; and a first conductive layer disposed between the cover layer and the substrate, wherein the first conductive layer comprises a plurality of first electrode patterns separated from each other. The sensing device of claim 14, further comprising an intermediate layer disposed between the light shielding layer and the light guiding layer. The sensing device of claim 15 further comprising a second conductive layer disposed between the cover layer and the substrate and including a plurality of second electrode patterns, wherein the first electrode patterns are staggered The second electrode patterns are located between the first conductive layer and the second conductive layer. The sensing device of claim 14, wherein the first conductive layer is located between the cover layer and the light guiding layer. The sensing device of claim 14, wherein the first conductive layer is located between the light guiding layer and the light shielding layer. The sensing device of claim 14, wherein the first conductive layer is located between the substrate and the light shielding layer.