TW201716942A - Touch panel blocking structure improving the overall touch sensitivity, and extending the service life of the conductive film - Google Patents

Abstract

This invention relates to a touch panel blocking structure, especially to a touch panel blocking structure that increases the conduction rate of upper and lower electrodes. The touch panel includes a conductive glass substrate and a conductive film provided on the conductive glass substrate. The present invention is characterized in that the conductive glass substrate is provided with a plurality of transparent blocking bumps arranged in matrix arrays in a work area surrounded by an annular insulating layer on the surface of the transparent conductive layer. The distance between a transparent blocking bump and its adjacent transparent blocking bump is about 5.3 to 11.1mm and the height of the transparent blocking bumps is about 20 to 60[mu]m, The diameter of the transparent blocking bumps is about 40 to 120 [mu]m In this way, since the density of the transparent blocking bumps is small, the number of transparent blocking bumps touched by a single touch/press action is less than the conventional structure, the driving force becomes smaller, the conductive film receives less impact from the transparent blocking bumps, and the area of the conductive glass substrate in contact with the conductive thin film becomes large, the overall touch sensitivity is improved, and the service life of the conductive film can be prolonged, which in turn increases the service life of the products with touch panels.

Description

Touch panel barrier structure

The invention belongs to the technical field of barrier points of a touch panel, and specifically relates to a touch panel barrier structure with high capacitance value and increasing the number of actuations, thereby improving the sensitivity of the touch and prolonging the service life of the product. .

According to the touch panel, it has been widely used in various electronic products, especially on the surface of the display screen. The display screen with the touch panel allows the user to directly select and press the screen to operate with a finger or an operation pen, thereby providing a more convenient and user-friendly operation mode. Common touch panels can be classified into four types: resistive, capacitive, sonic, and optical depending on their principles. At present, the most attractive one is the capacitive touch panel, and the capacitive touch panel can be divided into a surface capacitive touch panel (single touch) and a projected capacitor according to different designs of the touch area. The touch panel (multi-touch) can overcome the phenomenon that the resistive touch panel wears the screen by finger pressing.

The structure of the conventional touch panel is as shown in the first figure, which is composed of a two-layer structure, comprising a conductive glass substrate (10) [ITO Glass] and a conductive layer attached to the conductive glass substrate (10). Film (20) [ITO Film], wherein the upper surface of the conductive glass substrate (10) is plated with a conductive layer (11), and a ring-shaped electrode circuit (15) is printed on the periphery thereof, and the conductive glass substrate (10) is printed thereon. Correspondence An annular insulating layer (30) is printed on the area of the peripheral electrode circuit (15); the conductive film (21) is also plated on the lower surface of the conductive film (20) and printed with silver wires (25) as induction conduction. Between the two layers, there are a plurality of fine, matrix-arranged transparent barrier bumps (35) (Dot Spacer) to keep the conductive glass substrate (10) and the conductive film (20) insulated to ensure When the user does not touch the panel, the two upper and lower layers are not turned on to cause erroneous interpretation. Furthermore, an insulating adhesive layer (40) is disposed between the two layers of the conductive glass substrate (10) and the conductive film (20), so that the conductive glass substrate (10) and the conductive film (20) can be adhered to each other to form The structure of a touch panel.

The most important step in the front-end process of the touch panel is the fabrication of the transparent barrier bumps (35). Since the transparent barrier bumps (35) are the insulation barrier between the conductive layers (21, 11) of the upper electrode and the lower electrode, the upper conductive film (20) is touched by a finger or other medium, and as shown in the second figure. It is shown that the distance between the transparent barrier bumps (35) and the adjacent transparent barrier bumps (35) is about 4 mm, and the heights of the transparent barrier bumps (35) are about 5-10 μm and the diameter is about 30 μm. . Since the density of the transparent barrier bumps (35) is large, the same touch action touches the multi-point transparent barrier bumps (35), so that the conductive film (20) and the conductive glass substrate (10) can be turned on. For the calculation of the contact, a large touch is required as the power path, and the upper conductive film (20) is required to withstand the impact of the multi-point transparent barrier bump (35), and the resistivity is blocked due to the transparent barrier bump (35). The area of the conductive film (10) contacting the conductive glass substrate (10) is also reduced, which affects the overall touch sensitivity and increases the capacitance value, thereby shortening the service life of the conductive film (20). It also causes shortcomings such as shortened service life of touch panel products, so uniformity and density are transparent barrier bumps (35) process A major topic.

The present inventors have in view of the problems of short life and poor sensitivity of existing touch panels, and have been intensively discussing the needs of the aforementioned touch panels by actively researching and manufacturing experience in related industries for many years, and actively seeking solutions. Tao, through continuous efforts in research and trials, finally successfully developed a touch panel barrier structure, in order to overcome the inconvenience and trouble caused by the need for greater power and the high rate of touch.

Therefore, the main purpose of the present invention is to provide a touch panel barrier structure with high touch sensitivity, which can reduce the contact probability of the conductive film and the conductive glass substrate by increasing the touch sensitivity, thereby improving the sensitivity of the operation. .

Moreover, another main object of the present invention is to provide a touch panel barrier structure having a long service life, which can reduce the impact on the conductive film and increase the product, in addition to the improvement of the sensitivity. The number of pressable times can effectively extend the service life of the product.

Accordingly, the present invention mainly utilizes the following technical means to specifically implement the foregoing objects and effects; it comprises a conductive glass substrate and a conductive film disposed opposite to the conductive glass substrate in a two-layer structure, wherein the conductive glass The opposite surfaces of the substrate and the conductive film respectively have a transparent conductive layer, and a rectangular annular electrode circuit is printed on the periphery of the conductive glass substrate, and a rectangular annular insulation is printed on the conductive glass substrate in a region corresponding to the surrounding electrode circuit. a layer, and an insulating adhesive layer for bonding between the conductive glass substrate and the conductive film; wherein the conductive glass substrate is provided with a plurality of matrix arrays in a working area surrounded by the annular insulating layer on the surface of the transparent conductive layer Transparent barrier bumps The distance between the blocking bump and the adjacent transparent blocking bump is about 5.3 to 11.1 mm, and the height of the transparent blocking bump is about 20 to 60 μm, and the diameter of the transparent blocking bump is about 40 to 120 μm.

Therefore, through the specific implementation of the foregoing technical means of the present invention, the density of the transparent barrier bumps of the touch panel of the present invention is small, and the adjacent range is approximately equal to the range of the fingertips of the human index finger, so the same touch action The transparent barrier bumps are less than the conventional ones, and the power is much smaller than that of the conventional one, and can effectively reduce the contact resistance when the product is activated, so that the upper conductive film can withstand less transparent blocking bumps. The impact, and the area of the conductive film contacting the conductive glass substrate is also increased, so that the sensitivity of the overall touch can be improved, the service life of the conductive film can be prolonged, and the service life of the touch panel product is further increased, so the present invention The touch panel is more effective than the existing one in terms of "improving sensitivity, reducing power and life".

In order to make the present invention a better understanding of the composition, features and other objects of the present invention, the following are a few preferred embodiments of the present invention, which are described in detail with reference to the drawings, and The specification is implemented.

(10)‧‧‧Conductive glass substrate

(11) ‧‧‧ Conductive layer

(15)‧‧‧Electrode circuit

(20)‧‧‧Electrical film

(21) ‧‧‧ Conductive layer

(25)‧‧‧Silver line

(30) ‧‧‧Circular insulation

(35) ‧‧‧Transparent barrier bumps

(40) ‧‧‧Adhesive layer

(50)‧‧‧Conductive glass substrate

(51) ‧‧‧Transparent conductive layer

(55)‧‧‧Electrode circuit

(60)‧‧‧Electrical film

(61) ‧‧‧Transparent conductive layer

(70) ‧‧‧Circular insulation

(75) ‧‧‧Transparent barrier bumps

(80) ‧‧‧Adhesive layer

(90)‧‧‧Contact Department

(100)‧‧‧Soft circuit board

(105)‧‧‧Contacts

The first figure is a schematic diagram of a schematic structure of a touch panel; the first diagram is a schematic diagram of a schematic structure of a touch panel; the second diagram is a schematic diagram of a layout of transparent barrier bumps of a touch panel; FIG. 3 is a schematic view showing the appearance of a preferred embodiment of the touch panel barrier structure of the present invention; FIG. The fourth figure is a schematic diagram of a simple planar layout of the barrier structure of the touch panel of the present invention; the fifth diagram is a schematic diagram of the simple side layout of the barrier structure of the touch panel of the present invention; and the sixth figure: the action of the transparent barrier bumps between different distances Life curve.

The present invention is a touch panel barrier structure, with reference to the specific embodiments of the invention and its components, as illustrated in the accompanying drawings, all of which relate to front and rear, left and right, top and bottom, upper and lower, and horizontal and vertical, It is merely for convenience of description, not limiting the invention, nor limiting its components to any position or spatial orientation. The drawings and the dimensions specified in the specification may be varied in accordance with the design and needs of the specific embodiments of the present invention without departing from the scope of the invention.

The present invention is a resistive touch panel, as shown in the third figure, the touch panel includes a conductive glass substrate (50) [ITO Glass] and a relative mounting with the conductive glass substrate (50). A two-layer conductive film (60) [ITO film], wherein the opposite surfaces of the conductive glass substrate (50) and the conductive film (60) respectively have a transparent conductive layer (51, 61), and the conductive glass substrate (50) a rectangular annular electrode circuit (55) is printed on the periphery thereof, and a rectangular annular insulating layer (70) is printed on the conductive glass substrate (50) in a region corresponding to the surrounding electrode circuit (55), and the conductive glass is further printed. The substrate (50) is printed with a plurality of fine transparent barrier bumps (75) in the space surrounding the inner edge of the annular insulating layer (70), so that the conductive glass substrate (50) and the conductive film (60) are insulated from each other to Make sure that the two upper and lower layers are not turned on and the wrong interpretation occurs when the user does not touch the panel. An insulating adhesive layer (80) corresponding to the annular insulating layer (70) is disposed between the conductive glass substrate (50) and the conductive film (60), so that the conductive glass substrate (50) and the conductive film (60) can be adhered one or two. The layer structure, the conductive glass substrate (50) has a contact portion (90), the contact portion (90) is provided with a flexible circuit board (100) corresponding to the contact portion (105) [Flexible Printed Circuit board The electrical connection is made to provide the signal transmission of the input and output. The above-mentioned configuration is a typical structure of the resistive touch panel, and will not be described again. As for the characteristic structure of the preferred embodiment of the present invention, it is like the third. As disclosed in FIGS. 4 and 5, the conductive glass substrate (50) is provided with a plurality of matrix-arranged transparent barrier bumps in a working area surrounded by an annular insulating layer (70) on the surface of the transparent conductive layer (51) (75). The transparent barrier bumps (75) may be formed by screen printing or a yellow light process, and the distance between the transparent barrier bumps (75) and the adjacent transparent barrier bumps (35) is about 5.3 to 11.1 mm. The optimum separation distance is 7.7~8.4mm, and the height of the transparent barrier bumps (75) is about 20~60μm, and the optimal height is 2 5~32μm, and the transparent barrier bumps (75) have a diameter of about 40~120μm, and the optimal diameter is 70~100μm.

Thereby, the group constitutes a touch panel barrier structure capable of reducing power and improving sensitivity.

Through the foregoing structural description, the touch panel of the conventional method and the touch panel of the present invention are tested for actuation, and the test results are shown in Table 1 and Figure 6, wherein Table 1 is a transparent barrier bump (75). The action test comparison table of different pitches, and the figure 6 shows the action life of the transparent barrier bumps (75) with different pitches (including 4 mm of the formula, 6 mm, 8 mm of the invention and 12 mm beyond the scope of the invention) In the seventh figure, the life of the touch panel used in the conventional structure is used. Life.

According to the configuration and test description of the present invention, since the density of the transparent barrier bumps (75) of the touch panel of the present invention is small, the adjacent range is approximately equal to the range of the fingertips of the human index finger, so the same touch The pressure barrier touches the transparent barrier bump (75) less than the conventional one. From the first table, regardless of the brand and specification of the conductive film (60), the power of the present invention is much better than that of the conventional one. Small, and can effectively reduce the contact resistance when the product is activated, so the upper conductive film (60) can withstand less transparent barrier bump (75) impact, while the conductive film (60) contacts the conductive glass substrate (50) The area is also increased, which can improve the sensitivity of the overall touch, and can extend the service life of the conductive film (60), further increasing the service life of the touch panel product, which can be confirmed by the comparison of the sixth figure; The second system generally requires the product of the touch panel, and thus it can be known that the present invention truly meets the requirements of the touch panel, thereby effectively increasing the added value of the product and enhancing its economic benefits.

In summary, it can be understood that the present invention is a novel creation with excellent creativity, in addition to effectively solving the problems faced by the practitioners, and greatly improving the efficacy, and the same or similar product creation is not seen in the same technical field. Or public use, and at the same time have an improvement in efficiency, so the present invention has met the requirements of "newness" and "progressiveness" of the new patent, and is applying for a new type of patent according to law.

(50)‧‧‧Conductive glass substrate

(51) ‧‧‧Transparent conductive layer

(55)‧‧‧Electrode circuit

(60)‧‧‧Electrical film

(61) ‧‧‧Transparent conductive layer

(70) ‧‧‧Circular insulation

(75) ‧‧‧Transparent barrier bumps

(80) ‧‧‧Adhesive layer

(90)‧‧‧Contact Department

(100)‧‧‧Soft circuit board

(105)‧‧‧Contacts

Claims (5)

A touch panel barrier structure comprising a conductive glass substrate and a conductive film disposed opposite to the conductive glass substrate in a two-layer structure, wherein the opposite surfaces of the conductive glass substrate and the conductive film respectively have a transparent conductive layer, and A rectangular annular electrode circuit is printed on the periphery of the conductive glass substrate, and a rectangular annular insulating layer is printed on the conductive glass substrate in a region corresponding to the surrounding electrode circuit, and an adhesive layer is disposed between the conductive glass substrate and the conductive film. The insulating adhesive layer is characterized in that: the conductive glass substrate is provided with a plurality of matrix-arranged transparent barrier bumps in a working area surrounded by the annular insulating layer on the surface of the transparent conductive layer, and the transparent barrier bumps and phases The distance between the adjacent transparent barrier bumps is about 5.3 to 11.1 mm, and the height of the transparent barrier bumps is about 20 to 60 μm, and the diameter of the transparent barrier bumps is about 40 to 120 μm. Thereby, the group constitutes a touch panel barrier structure capable of reducing power and improving sensitivity. The touch panel barrier structure of claim 1, wherein the conductive glass substrate has a contact portion, and the contact portion is electrically connected to a flexible circuit board of a corresponding contact portion. Provide signal transmission for input and output. The touch panel barrier structure of claim 1, wherein the transparent barrier bumps are formed by screen printing. The touch panel barrier structure of claim 1, wherein the transparent barrier bumps are formed by a yellow light process. The touch panel barrier structure according to claim 1, wherein the optimal distance between the transparent barrier bumps and the adjacent transparent barrier bumps is 7.7~ 8.4mm, and the optimum height of the transparent barrier bumps is 25~32μm, and the optimal diameter of the transparent barrier bumps is 70~100μm.