TW201702848A - Capacitive touch panel - Google Patents

Abstract

A novel design for the sensing structure of a capacitive touch panel is provided to reduce the appearance visibility arising from the bridge or jumper structure included therein. Two optical layers arranged above and below the sensing structure respectively are either patterned such that the difference in reflectivity of the bridge structure with respect to the area other than the bridge structure is reduced. In such a manner, the appearance visibility of the bridge or jumper structure contained in the touch panel could be properly eliminated.

Description

Capacitive touch panel

The present invention relates to a capacitive touch panel, and in particular to an improvement in the optical characteristics of a sensing structure of a capacitive touch panel.

Touch panels can be divided into resistive, capacitive, infrared, and ultrasonic based on their sensing principles. In various types of touch panels, capacitive touch panels use weak currents to sense the human body. To achieve the purpose of touch. Conventionally, a projected capacitive touch panel based on a glass substrate is mostly formed by combining two glass structures, and the structure generally has: Cover Glass, Indium-Tin Oxide, ITO. a conductive layer, and a touch sensing layer. Further, in order to make the panel thinner, the latest technology is to use a single glass solution (One Glass Solution, OGS) to achieve thinning, while simplifying materials, processes, improving production efficiency, and reducing costs.

The single glass solution is characterized in that a single protective layer of a protective glass is plated with a single layer or two layers of ITO conductive layers containing X and Y-axis sensing electrodes, so that the single-piece glass not only has the strength and safety of the protective glass, but also Both touch functions.

Please refer to the first figure, which schematically illustrates a partial structure of a conventional OGS touch panel sensing structure. The sensing structure of the touch panel is generally composed of a plurality of sensing units 110 formed on the substrate 100, in the same layer or in different layers. In these sensing units, a part of the sensing units 110X are electrically connected to each other in a first direction (for example, an X direction), and the other portions of the sensing units 110Y are electrically connected to each other in a second direction (for example, Y). In the direction, the sensing unit 110X and the sensing unit 110Y are not electrically connected to each other due to the action of the insulating layer 120; finally, a protective layer 140 is covered to protect the sensing structure of the touch panel. With such a connection method, the position coordinates touched by the user can be determined by the detection of the capacitive sensing.

When a plurality of sensing units respectively connected in different directions are formed by the same conductive layer, the conductive layers are patterned to have a connection structure to connect the sensing units to each other. For example, as shown in FIG. 2A, it schematically illustrates a partial structure of a conventional OGS touch panel. The conductive layer (or the sensing layer) is patterned to form a plurality of sensing units 210X, 210Y, wherein the sensing units 210Y are connected to each other in a first direction by the connecting portion 210a (for example: Y The other part of the sensing unit 210X is electrically connected to each other in a second direction (for example, the X direction) by a bridge structure. The bridging structure includes an insulator 220 and a conductive structure 230 formed in a region above the connecting portion 210a, wherein the conductive structure 230 is formed over the insulator 220, and connects two adjacent sensing units 210 in, for example, the Y direction.

The plurality of sensing units and the corresponding bridging structure are formed An array of touch panel sensing structures as shown in FIG. As shown in FIG. 2B, the touch panel 20 mainly includes a substrate 200 and a sensing structure array constructed on the substrate 200. The sensing structure array includes a plurality of sensing structures as shown in FIG. In the touch panel structure, since the sensing unit has a gap and a bridging structure, after the touch panel is assembled, the user can easily perceive the existence of the pattern structure, that is, the user can easily see from the outside. The structure shown in the dotted line area in the second B diagram.

In order to reduce the external visual sense caused by the gap of the sensing unit, a conventional method uses a refractive index matching method to add a multilayer film having an optical refractive index close to that of the sensing layer in the touch panel structure, so that the sensing unit is used. The difference in optical properties from the gap can be reduced to a level that is difficult for the human eye to perceive. As shown in the third figure, the sensing structure of the conventional OGS touch panel includes a sensing unit 310x, a connecting structure 310a, a sensing unit (not shown) connected via the connecting portion 310a, and a conducting and conducting by the insulator 320. A bridge structure is formed by the structure 330. A first optical film 350 is formed between the substrate 300 and the sensing structure, and a second optical film 360 is formed over the sensing structure and covered with a protective layer 340. Utilizing the index matching effect between the first and second optical films 350, 360, the external visual sense of the sensing unit gap can be reduced.

However, this practice is only applicable to the sensing unit area of uniform thickness. In the region where the bridging structure is formed, the optical characteristics (such as reflectance and/or refractive index) at the region where the bridging structure is formed due to the influence of the stacked structure (including the two transparent conductive materials and the insulating material in the middle) are different. Will be obvious Different from other regions; therefore, the use of the above-mentioned conventional optical film refractive matching method will make it easier for the user to perceive the existence of the bridging structure and affect the appearance of the touch panel.

For the sake of his post, the applicant has carefully tested and researched the "capacitive touch panel" in this case. The structure of the invention is simple, and the effect of reducing the visual sense of the bridge structure can be realized by a simple program; in addition, the invention has the advantage of low production cost because it is compatible with the existing process.

In view of the related problems of the prior art, the object of the present invention is to provide a sensing structure design of a capacitive touch panel to improve the bridging structure in the sensing structure in a cost-effective manner compatible with existing processes. The external visual sense caused by the existence.

Based on the foregoing objective, the present invention provides a capacitive touch panel comprising: a substrate; an array of sensing structures on the substrate, the sensing structure array comprising a plurality of sensing structures, the plurality of senses Each of the first sensing units, a second sensing unit, and a bridge structure, wherein each of the first sensing units is connected to a first direction, and each of the second sensing units is Electrically connected to the second direction by the bridging structure, the second direction being different from the first direction; and at least one patterned optical matching layer, wherein the patterned optical matching layer comprises a corresponding structure of the bridging structure a plurality of island structures or a plurality of openings, wherein a coverage area of each of the island structures and each of the openings is greater than an insulation coverage area of the bridge structure. root According to the teachings of the present invention, the patterned optical matching layer is between the substrate and the array of sensing structures. According to another concept, the patterned optical matching layer is on the array of sensing structures.

In an embodiment of the invention, the at least one patterned optical matching layer comprises a first patterned optical matching layer between the substrate and the sensing structure array, and one of the sensing structure arrays A second patterned optical matching layer.

In an embodiment of the invention, the first patterned optical matching layer is patterned to include a plurality of openings, wherein the positions of the openings correspond to the bridging structure.

In an embodiment of the invention, the first patterned optical matching layer is patterned to include a plurality of island structures, wherein the position of each of the island structures corresponds to the bridging structure.

In an embodiment of the invention, the second patterned optical matching layer is patterned to include a plurality of openings, wherein the positions of the openings correspond to the bridging structure.

In an embodiment of the invention, the second patterned optical matching layer is patterned to include a plurality of island structures, wherein the position of each of the island structures corresponds to the bridging structure.

In an embodiment of the invention, the at least one patterned optical matching layer has a thickness between 30 nm and 200 nm.

In an embodiment of the invention, the at least one patterned optical horse The layer is an organic single layer film or an inorganic film. In one embodiment, the organic monolayer film has a refractive index between 1.58 and 1.85. In one embodiment, the inorganic monolayer film has a refractive index between 1.4 and 2.5.

In one embodiment of the invention, the at least one patterned optical matching layer is an organic multi-layer film or an inorganic multi-layer film, wherein each layer structure in the multi-layer film has a different refractive index.

In one embodiment of the present invention, the inorganic composite film is selected from the group consisting of a multi-layer film of Nb ₂ O ₅ and SiO ₂ and a multi-layer film of SiN _x and SiO ₂ .

In one embodiment of the invention, the thickness and material of the at least one patterned optical matching layer are selected such that the reflectance difference value at the bridging structure is <1%.

Another aspect of the present invention provides a capacitive touch panel comprising: a substrate; a first sensing layer disposed on the substrate and patterned to include a plurality of first sensing units, plural a second sensing unit and a plurality of connecting portions, wherein the first sensing unit is electrically connected to a first direction by each of the connecting portions; an insulating pattern layer is located on the first sensing layer And patterned to include a plurality of insulators, each of the insulating systems being located on each of the connecting portions; a second sensing layer disposed on the insulating pattern layer and patterned to include a plurality of a conductive structure, each of the conductive structures being located on each of the insulators and electrically connecting the second sensing unit to a second direction, wherein the second direction is different from the first direction; An optical matching layer, which is located on the second sensing layer and has a pattern Formed to include a plurality of openings or a plurality of island-like structures, wherein each of the openings or the locations of the structures are corresponding to the conductive structure, and wherein the coverage area of each of the island-shaped structures and each of the openings is greater than a coverage area of each of the insulators; and a second optical matching layer between the substrate and the first sensing layer.

In another concept, the present invention provides a capacitive touch panel comprising: a substrate; a first sensing layer disposed on the substrate and patterned to include a plurality of first sensing units, plural a second sensing unit and a plurality of connecting portions, wherein the first sensing unit is electrically connected to a first direction by each of the connecting portions; an insulating pattern layer is located on the first sensing layer And patterned to include a plurality of insulators, each of the insulating systems being located on each of the connecting portions; a second sensing layer disposed on the insulating pattern layer and patterned to include a plurality of a conductive structure, each of the conductive structures being located on each of the insulators and electrically connecting the second sensing unit to a second direction, wherein the second direction is different from the first direction; An optical matching layer on the second sensing layer; and a second optical matching layer between the substrate and the first sensing layer, and patterned to include a plurality of openings or a plurality of island structures, each of which is described Opening the or each said location based structure corresponding to the conductive structure, and wherein each of the island-shaped structure covering the area of each opening is larger than the coverage area of each of the insulator.

The invention is respectively disposed on the touch panel and above and below the sensing structure The two-layer optical matching layer is patterned to reduce the difference in reflectivity between the bridging structure area and other areas such as the non-bridging structure, so as to eliminate the difference in the visual perception of the human eye to the bridging structure area, and reduce the sensing. Appearance visibility of the structure due to the inclusion of a bridging structure.

The above-described and other features, aspects, and advantages of the present invention will become more apparent from the detailed description of the appended claims.

100‧‧‧Substrate

110, 110X, 110Y‧‧‧ sensing unit

120‧‧‧Insulation

140‧‧‧Protective layer

20‧‧‧Touch panel

200‧‧‧Substrate

210a‧‧‧Connecting Department

210X, 210Y‧‧‧Sensor unit

220‧‧‧Insulator

230‧‧‧Transmission structure

300‧‧‧Substrate

310‧‧‧Sensor layer

310a‧‧‧Connecting Department

310x‧‧‧Sensor unit

320‧‧‧Insulator

330‧‧‧Transmission structure

340‧‧‧Protective layer

350‧‧‧First optical film

360‧‧‧Second optical film

400‧‧‧Substrate

410‧‧‧Sensor layer

410a‧‧‧Connecting Department

410x‧‧‧Sensor unit

420‧‧‧Insulator

430‧‧‧Transmission structure

440‧‧‧protection layer

450‧‧‧Optical matching layer

460‧‧‧Optical matching layer

460A‧‧‧ openings

500‧‧‧Substrate

510‧‧‧Sensor layer

510a‧‧‧Connecting Department

510x‧‧‧Sensor unit

520‧‧‧Insulator

530‧‧‧Transmission structure

540‧‧‧Protective layer

550‧‧‧Optical matching layer

560‧‧‧Optical matching layer

560A‧‧‧ island structure

600‧‧‧Substrate

610‧‧‧Sensor layer

610a‧‧‧Connecting Department

610x‧‧‧Sensor unit

620‧‧‧Insulator

630‧‧‧Transmission structure

640‧‧‧protection layer

650‧‧‧Optical matching layer

650A‧‧‧ openings

660‧‧‧Optical matching layer

700‧‧‧Substrate

710‧‧‧Sensor layer

710a‧‧‧Connecting Department

710x‧‧‧Sensor unit

720‧‧‧Insulator

730‧‧‧Transmission structure

740‧‧‧Protective layer

750‧‧‧Optical matching layer

750A‧‧‧ island structure

760‧‧‧Optical matching layer

The first figure is a schematic diagram of a conventional touch panel sensing structure.

The second A diagram and the second B diagram are schematic diagrams of a conventional touch panel sensing structure.

The third figure is a schematic diagram of a conventional touch panel sensing structure.

The fourth figure is a schematic diagram of a sensing structure of a touch panel according to a first embodiment of the present invention.

The fifth figure is a schematic diagram of a sensing structure of a touch panel according to a second embodiment of the present invention.

FIG. 6 is a schematic diagram of a sensing structure of a touch panel according to a third embodiment of the present invention.

FIG. 7 is a schematic diagram of a sensing structure of a touch panel according to a fourth embodiment of the present invention.

To facilitate understanding of the technical features, contents and advantages of the present invention and The specific embodiments of the present invention will be described in detail by way of example with reference to the accompanying drawings. It is to be understood that the following description and drawings are for the purpose of illustration and description The scope of the present invention is to be construed as limiting the scope of the invention as set forth in the appended claims.

Specific embodiments of the invention are further described below in conjunction with the drawings. It is to be understood that the elements indicated in these figures are for clarity and not for actual size and proportion. In addition, in order to facilitate the understanding of the drawings, the depiction and description of the conventional elements are omitted in the partial drawings.

As used in the specification of the present invention, the "coverage area" of an island structure, an opening, an insulator, etc. refers to the area of the substrate portion covered by the structure of the island structure, the opening and the insulator, etc. That is, the size of these structures is indicated.

Please refer to the fourth figure, which schematically illustrates the touch panel sensing structure and the manner of reducing the visual sense of the bridge structure according to the first embodiment of the present invention.

As shown in the fourth figure, the capacitive touch panel of the present invention comprises a substrate 400, a sensing layer 410 formed on the substrate 400, an insulator 420, a conductive conductive structure 430, and a protective layer 440, wherein the sensing layer 410 is a layer A transparent conductive material (such as, but not limited to, indium tin oxide) is formed by patterning, which includes a plurality of sensing units 410x, a connecting portion 410a, and via a connecting portion 410a This is connected to a plurality of sensing units (not shown) in a first direction (for example, the Y direction). The insulator 420 is formed by patterning an insulating material layer, and the insulator 420 is located above the connecting portion 410a. The conductive structure 430 is comprised of another layer of transparent conductive material (such as, but not limited to, indium tin oxide) that forms a bridge structure with the insulator 420 to connect the sensing unit 410x to a second direction (eg, the X direction). In a specific embodiment of the present invention, the sensing unit, the insulator 420 and the conductive structure 430 of the sensing layer 410 form a sensing structure.

For clarity of presentation, only one sensing structure is shown in the drawings as an illustration. It will be apparent to those skilled in the art that the capacitive touch panel of the present invention includes a plurality of such sensing structures, and can be arranged in an array form as shown in FIG.

In order to reduce the visual appearance of the bridging structure in the fourth figure, in the present invention, one or more optical matching layers are added to the touch panel, wherein at least one of the optical matching layers is patterned to have a predetermined pattern. As shown in the fourth figure, an optical matching layer 460 is formed over the entire sensing structure, which is patterned to form a plurality of openings 460A, wherein the positions of the openings 460A correspond to the bridging structure in the sensing structure. (For example, the optical matching layer 460 is formed with an opening 460A just above the bridging structure), and the coverage area of each opening 460A is greater than the coverage area of the insulator 420. Thereby, in the region where the bridging structure is formed, the light is only affected by the action of the single-layer optical matching layer 450, so that the regional refractive index adjustment can be easily performed to make it possible to use other structural regions using the double-layer optical matching layer. (meaning that the area without bridging structure) presents the whole phase The near reflection effect reduces the visual perception difference of the human eye to the bridging structure and other structural areas.

Please refer to the fifth figure, which schematically illustrates the touch panel sensing structure and the manner of reducing the visual sense of the bridge structure according to the second embodiment of the present invention.

As shown in the fifth figure, the capacitive touch panel of the present invention comprises a substrate 500, a sensing layer 510 formed on the substrate 500, an insulator 520, a conductive structure 530 and a protective layer 540, wherein the sensing layer 510 is a transparent conductive layer. A material (such as, but not limited to, indium tin oxide) is formed by patterning, and includes a plurality of sensing units 510x, a connecting portion 510a, and a plurality of connected to each other in a first direction (eg, the Y direction) via the connecting portion 510a Sensing units (not shown). The insulator 520 is formed by patterning an insulating material layer, and the insulator 520 is located above the connecting portion 510a to form a bridge structure together with the conductive structure 530. The conductive structure 530 is comprised of another layer of transparent conductive material (such as, but not limited to, indium tin oxide) that connects the sensing unit 510x to a second direction (eg, the X direction). In a specific embodiment of the present invention, the sensing unit, the insulator 520 and the conductive structure 530 of the sensing layer 510 form a sensing structure.

In the specific embodiment shown in the fifth figure, the optical matching layer formed on the sensing structure is patterned to form a plurality of island structures 560A, the position of which corresponds to the bridging structure in the sensing structure (for example, an island) The structure 560A is located just above the bridge structure, and the coverage area of each island structure 560A is greater than the coverage area of the insulator 520. Thereby, in the area where the bridge structure is formed, The regional refractive index adjustment can be performed by using the island structure 560A of the optical matching layer, so that it can exhibit similar reflection effects with other structural regions (that is, regions without bridging structure), and reduce the human eye to bridge. Visual perception differences in structure and other structural areas.

Please refer to a sixth figure, which schematically illustrates a touch panel sensing structure and a manner of reducing the visual sense of the bridge structure according to the third embodiment of the present invention.

As shown in FIG. 6 , the capacitive touch panel of the present invention comprises a substrate 600 , a sensing layer 610 formed on the substrate 600 , an insulator 620 , a conductive structure 630 , and a protective layer 640 , wherein the sensing layer 610 is transparently conductive. A material (such as, but not limited to, indium tin oxide) is formed by patterning, comprising a plurality of sensing units 610x, a connecting portion 610a, and a plurality of connected to each other in a first direction (eg, the Y direction) via the connecting portion 610a Sensing units (not shown). The insulator 620 is formed by patterning an insulating material layer, and the insulator 620 is located above the connecting portion 610a. The conductive structure 630 is comprised of another layer of transparent conductive material (such as, but not limited to, indium tin oxide) that forms a bridge structure with the insulator 620 to connect the sensing unit 610x to a second direction (eg, the X direction). In a specific embodiment of the present invention, the sensing unit, the insulator 620 and the conductive structure 630 of the sensing layer 610 form a sensing structure.

In the specific embodiment shown in FIG. 6 , an optical matching layer 660 is attached over the entire sensing structure; further, an optical matching layer 650 is formed between the substrate 600 and the sensing structure, and the optical matching layer 650 is formed. Patterned A plurality of openings 650A are formed, wherein the positions of the openings 650A are corresponding to the bridging structure in the sensing structure (for example, the optical matching layer 650 is formed with an opening 650A at the bridging structure to expose the bridging structure), and each opening The coverage area of the 650A is greater than the coverage area of the insulator 620. Thereby, in the region where the bridging structure is formed, the light is only affected by the action of the single-layer optical matching layer 660, so that the regional refractive index adjustment can be easily performed to make it possible to use other structural regions using the double-layer optical matching layer. (meaning that the area without bridging structure) has a similar reflection effect on the whole, which reduces the visual perception difference of the human eye to the bridging structure and other structural areas.

Please refer to the seventh figure, which schematically illustrates the touch panel sensing structure and the manner of reducing the visual sense of the bridge structure according to the fourth embodiment of the present invention.

As shown in the seventh figure, the capacitive touch panel of the present invention comprises a substrate 700, a sensing layer 710 formed on the substrate 700, an insulator 720, a conductive structure 730 and a protective layer 740, wherein the sensing layer 710 is a transparent conductive layer. A material (such as, but not limited to, indium tin oxide) is formed by patterning, comprising a plurality of sensing units 710x, a connecting portion 710a, and a plurality of connected to each other in a first direction (eg, the Y direction) via the connecting portion 710a Sensing units (not shown). The insulator 720 is formed by patterning an insulating material layer, and the insulator 720 is located above the connecting portion 710a to form a bridge structure with the conductive structure 730. The conductive structure 730 is comprised of another layer of transparent conductive material (such as, but not limited to, indium tin oxide) that connects the sensing unit 710x to a second direction (eg, the X direction). In a specific embodiment of the present invention, the sensing unit, the insulator 720 and the conductive structure 730 of the sensing layer 710 form a sensing structure.

In the particular embodiment illustrated in the seventh embodiment, the optical matching layer 760 is entirely overlying the sensing structure. In addition, an optical matching layer is formed between the substrate 700 and the sensing structure, which is patterned to form a plurality of island structures 750A, the position of each island structure 750A and the bridging structure in the sensing structure. Correspondingly (for example, the island structure 750A is located just below the bridging structure), and the coverage area of each island structure 750A is greater than the coverage area of the insulator 720. In this way, in the region where the bridging structure is formed, the regional refractive index adjustment can be performed by the island-like structure 750A of the optical matching layer so that it can be combined with other structural regions (that is, regions having no bridging structure). The overall reflection effect is similar, which reduces the visual perception of the bridge structure and other structural areas.

The foregoing drawings and corresponding description are illustrative of specific embodiments of the capacitive touch panel of the present invention. It must be emphasized that in the above figures, only one sensing structure is shown as an illustration for clarity. It will be apparent to those skilled in the art that the capacitive touch panel of the present invention includes a plurality of such sensing structures, and can be arranged in an array form as shown in FIG.

In a specific embodiment of the present invention, a two-layer optical matching layer respectively disposed on the upper and lower sides of the sensing structure in the touch panel is patterned by a yellow etching process, thereby reducing the structure of the bridge structure and the non-bridge structure, and the like. The difference in reflectivity between the regions to eliminate the human eye's perception of the visual perception of the bridging structure region. In addition to the structural design, the material and thickness combination of the optical matching layer can also be adjusted according to actual needs and specifications, so that the reflectance difference between the bridging structure region of the touch panel and other regions is reduced to less than 1%, Eliminate differences in human perception. For example, in one embodiment, each optical matching layer can have a thickness between 30 nm and 200 nm. In addition, the optical matching layer may be selected from one of an organic film of a single material and an organic film of a composite material; wherein the refractive index of the organic film is preferably between 1.58 and 1.85, and the refractive index of the inorganic film. Preferably, it is between 1.4 and 2.5. In one embodiment, the inorganic thin film is selected from the group consisting of a composite material of Nb ₂ O ₅ and SiO ₂ and a composite material of SiN _x and SiO ₂ . It is to be understood that the thickness ranges and materials are merely illustrative and not limiting of the scope of the invention.

In one embodiment, the organic film is formed of a resin, and the materials thereof include, but are not limited to, polyimine, cardo resin, acrylic resin, polyoxyalkylene, polybenzoxazole, melamine resin, phenolic Resin, polyamidoximine, polyether oxime, polyurethane or polyester. The organic thin film is doped with metal oxide particles to have different refractive indices of the resin film. More specifically, in order to easily adjust the refractive index of the organic film to 1.58 to 1.85, it is preferred to use polyimine, cardo resin, polybenzoxazole, polyamidolimine, polyether or Polyurethane and the like. Further, in order to improve the bondability between the organic film and the sensing structure, it is preferred to use polyimine, polybenzoxazole or polyamidoximine. What's more, the use of acrylic or polyoxyalkylene It is beneficial to the improvement of light transmittance. In one embodiment, a resin having an alkali soluble group (for example, a carboxyl group, a sterol group, a phenolic hydroxyl group, or the like) may be used as a matrix resin of the photosensitive resin composition to facilitate patterning to form the present invention. The optical matching layer island structure and opening.

According to the present invention, two layers of optical matching layers respectively disposed on the upper and lower sides of the sensing structure in the touch panel are patterned, thereby reducing the difference in reflectance between the bridge structure region and other regions such as the non-bridge structure, Eliminating the human eye's perception of the visual appearance of the bridge structure area can reduce the appearance visibility of the sensing structure due to the bridging structure. The present invention compares one layer and/or two layers to form an optical matching layer corresponding to the bridging structure, as compared with the optical matching layer disposed on the upper and lower sides of the sensing structure for visual visibility compensation. The island structure or opening covering the insulator is larger than the insulator in the bridge structure, which can reduce the difference in reflectivity between the bridge structure region and other regions. The effect of reducing the reflectance difference achieved by the material/thickness and matching layer design of each layer (from 0.97% to 0.47% and 0.61%, respectively) is shown in Table 1 below.

In summary, the capacitive touch panel structure provided by the present invention can improve the problem that the user can see the arrangement of the sensing structure and the bridging structure in the touch panel when using the touch panel, and the structure thereof is simple. Easy to make and low cost. In addition, the invention can be easily implemented in combination with the existing touch panel related processes, and has good applicability, and is a novel, progressive and industrially practical and competitive invention, which has great development value.

It is important to note that all features disclosed in the description of the invention may be combined with other methods or structures, and each of the features disclosed in this specification may be selectively replaced with identical, equal or similar features of interest. Therefore, all of the features disclosed in the description of the present invention are merely one of the equivalent or similar features, except for the particularly characteristic features.

While the invention has been described above in terms of the preferred embodiments thereof, it is not intended to limit the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention.

400‧‧‧Substrate

410‧‧‧Sensor layer

410a‧‧‧Connecting Department

410x‧‧‧Sensor unit

420‧‧‧Insulator

430‧‧‧Transmission structure

440‧‧‧protection layer

450‧‧‧Optical matching layer

460‧‧‧Optical matching layer

460A‧‧‧ openings

Claims (32)

A capacitive touch panel includes: a substrate; an array of sensing structures on the substrate, the sensing structure array comprising a plurality of sensing structures, each of the plurality of sensing structures each comprising a first a sensing unit, a second sensing unit, and a bridge structure, wherein each of the first sensing units is connected to each other in a first direction, and each of the second sensing units is electrically connected to each other by the bridge structure Connected to a second direction that is different from the first direction; and at least one patterned optical matching layer between the substrate and the sensing structure array or on the sensing structure array The patterned optical matching layer comprises a plurality of island structures or a plurality of openings corresponding to the bridging structure, and wherein a coverage area of each of the island structures and each of the openings is greater than an insulator coverage area in the bridging structure. The capacitive touch panel of claim 1, wherein the at least one patterned optical matching layer comprises a first patterned optical matching layer between the substrate and the sensing structure array, and is located A second patterned optical matching layer over the array of sensing structures. The capacitive touch panel of claim 2, wherein the first patterned optical matching layer is patterned to include a plurality of openings, wherein the positions of the openings correspond to the bridging structure. The capacitive touch panel of claim 2, wherein the first The patterned optical matching layer is patterned to include a plurality of island structures, wherein the position of each of the island structures corresponds to the bridging structure. The capacitive touch panel of claim 2, wherein the second patterned optical matching layer is patterned to include a plurality of openings, wherein the positions of the openings correspond to the bridging structure. The capacitive touch panel of claim 2, wherein the second patterned optical matching layer is patterned to include a plurality of island structures, wherein the position of each of the island structures is The bridging structure corresponds. The capacitive touch panel of claim 1, wherein the at least one patterned optical matching layer has a thickness between 30 nm and 200 nm. The capacitive touch panel of claim 1, wherein the at least one patterned optical matching layer is selected from the group consisting of an organic single layer film and an inorganic single layer film. The capacitive touch panel of claim 1, wherein the at least one patterned optical matching layer is selected from the group consisting of an organic composite film and an inorganic composite film, and wherein the composite layer The various layer structures in the film have different refractive indices. The capacitive touch panel of claim 8 or claim 9, wherein the organic single layer film is doped with metal oxide particles, and the organic single layer film has a refractive index of 1.58. Between 1.85. The capacitive touch panel of claim 10, wherein the organic film is selected from the group consisting of polyimine, cardo resin, and propylene. At least one of an acid resin, a polyoxyalkylene, a phenolic resin, a polyamidoximine, a polyether oxime, a polyurethane, and a combination of the foregoing. The capacitive touch panel of claim 8 or 9, wherein the inorganic single layer film has a refractive index of between 1.4 and 2.5. The capacitive touch panel of claim 12, wherein the inorganic composite film is selected from the group consisting of a multi-layer film of Nb ₂ O ₅ and SiO ₂ and a multi-layer film of SiN _x and SiO ₂ . One of them. The capacitive touch panel of claim 1, wherein the thickness and the material of the at least one patterned optical matching layer are selected such that a reflectance difference between the bridging structure and the non-bridge structure is < 1%. A capacitive touch panel includes: a substrate; a first sensing layer disposed on the substrate and patterned to include a plurality of first sensing units, a plurality of second sensing units, and a plurality of a connecting portion, wherein the first sensing unit is electrically connected to a first direction by each of the connecting portions; an insulating pattern layer is disposed on the first sensing layer and patterned to include a plurality of Each of the insulating systems is located on each of the connecting portions; a second sensing layer is disposed on the insulating pattern layer and patterned to include a plurality of conductive structures, each of the conductive structures Separatingly located on each of the insulators and electrically connecting the second sensing unit to a second a direction, wherein the second direction is different from the first direction; a first optical matching layer is disposed on the second sensing layer and patterned to include a plurality of openings or a plurality of island structures The position of each of the openings or the structures is corresponding to the conductive structure, and wherein a coverage area of each of the island structures and each of the openings is greater than a coverage area of each of the insulators; and a second optical matching layer, It is located between the substrate and the first sensing layer. The capacitive touch panel of claim 15, wherein the first optical matching layer and the second optical matching layer have a thickness between 30 nm and 200 nm. The capacitive touch panel of claim 15, wherein the first optical matching layer and the second optical matching layer are respectively selected from the group consisting of an organic single layer film and an inorganic single layer film. . The capacitive touch panel of claim 17, wherein the organic thin film is doped with metal oxide particles, and the organic thin film has a refractive index of between 1.58 and 1.85. The capacitive touch panel of claim 15, wherein the first optical matching layer and the second optical matching layer are respectively selected from the group consisting of an organic composite film and an inorganic composite film. And wherein each layer structure in the multi-layer film has a different refractive index. Capacitive touch surface as described in claim 18 or claim 19 a plate, wherein the material of the organic film is selected from the group consisting of polyimine, cardo resin, acrylic resin, polyoxyalkylene, phenolic resin, polyamidoximine, polyether oxime, polyamine At least one of the acid ester and a combination of the foregoing materials. The capacitive touch panel of claim 15, wherein the first optical matching layer and the second optical matching layer are respectively a composite inorganic film. The capacitive touch panel of claim 21, wherein the inorganic film has a refractive index of between 1.4 and 2.5. The capacitive touch panel according to claim 21, wherein the inorganic thin film is selected from the group consisting of a composite material of Nb ₂ O ₅ and SiO ₂ and a composite material of SiN _x and SiO ₂ . A capacitive touch panel includes: a substrate; a first sensing layer disposed on the substrate and patterned to include a plurality of first sensing units, a plurality of second sensing units, and a plurality of a connecting portion, wherein the first sensing unit is electrically connected to a first direction by each of the connecting portions; an insulating pattern layer is disposed on the first sensing layer and patterned to include a plurality of Each of the insulating systems is located on each of the connecting portions; a second sensing layer is disposed on the insulating pattern layer and patterned to include a plurality of conductive structures, each of the conductive structures Located separately Each of the insulators electrically connects the second sensing unit to a second direction, wherein the second direction is different from the first direction; a first optical matching layer is located in the second sense And a second optical matching layer between the substrate and the first sensing layer, and patterned to include a plurality of openings or a plurality of island structures, wherein each of the openings Or the position of each of the structures is corresponding to the conductive structure, and wherein the coverage area of each of the island structures and each of the openings is larger than the coverage area of each of the insulators. The capacitive touch panel of claim 24, wherein the first optical matching layer and the second optical matching layer have a thickness between 30 nm and 200 nm. The capacitive touch panel of claim 24, wherein the first optical matching layer and the second optical matching layer are respectively selected from the group consisting of an organic single layer film and an inorganic single layer film. . The capacitive touch panel of claim 26, wherein the organic thin film is doped with metal oxide particles, and the organic thin film has a refractive index of between 1.58 and 1.85. The capacitive touch panel of claim 24, wherein the first optical matching layer and the second optical matching layer are respectively selected from the group consisting of an organic composite film and an inorganic composite film. And wherein each layer structure in the multi-layer film has a different refractive index. Capacitive touch surface as described in claim 27 or 28 a plate, wherein the material of the organic film is selected from the group consisting of polyimine, cardo resin, acrylic resin, polyoxyalkylene, phenolic resin, polyamidoximine, polyether oxime, polyamine At least one of the acid ester and a combination of the foregoing materials. The capacitive touch panel of claim 24, wherein the first optical matching layer and the second optical matching layer are respectively a composite inorganic film. The capacitive touch panel of claim 30, wherein the inorganic film has a refractive index of between 1.4 and 2.5. The capacitive touch panel according to claim 30, wherein the inorganic thin film is selected from the group consisting of a composite material of Nb ₂ O ₅ and SiO ₂ and a composite material of SiN _x and SiO ₂ .