CN104281300A - touch control structure and manufacturing method thereof - Google Patents

Abstract

A touch structure, comprising: the first substrate is provided with a lower electrode arranged on the first substrate. And a first polarizing plate disposed on the first substrate and having an upper electrode.

Description

Touch structure and manufacturing method thereof

technical field

The invention is a touch panel, and provides a touch structure and a manufacturing method thereof, which can reduce the thickness of the touch structure and liquid crystal display device, improve touch sensitivity, reduce manufacturing cost and improve module production yield.

Background technique

In today's market of various consumer electronics products, portable electronic products such as personal digital assistants (PDAs), mobile phones (mobile phones), notebook computers (notebooks) and tablet computers (tablet PCs) have been widely used The touch panel is used as an interface tool for data communication. In addition, since the current design of electronic products is light, thin, short, and small, there is not enough space on the product to accommodate traditional input devices such as keyboards and mice, especially driven by the demand for tablet computers that emphasize humanized design. , The touch panel has become one of the key components. In addition to meeting the design requirements for multi-level menus, the touch panel can also have the functions of keyboard, mouse, etc. and humanized operation methods such as handwriting input, especially the characteristics of integrating input and output on the same interface (screen). , which is beyond the reach of other traditional input devices. Now a touch display device has been developed, which is provided with a touch panel on the display device, so that the touch panel provides a touchable area according to the display screen of the display device, for the user to touch according to the touch object displayed on the screen. control operation.

The traditional liquid crystal display panel with touch function usually adopts an external structure, and an ordinary liquid crystal display panel plus a touch panel is superimposed on the liquid crystal display panel, which leads to an increase in the overall thickness of the touch display device due to the increase in stacking. , and cause the deterioration of the optical effect and affect the appearance of the touch display device. At present, there is no good solution to this problem.

Contents of the invention

In view of the problems existing in the prior art, the present invention provides a touch control structure and a manufacturing method thereof, which have the advantages of thinner device, superior touch sensitivity, low manufacturing cost and high module production yield.

To achieve the above object, a touch control structure of the present invention includes: a first substrate with a lower electrode disposed on the first substrate. and the first polarizing plate is arranged on the first substrate, and the first polarizing plate has an upper electrode.

To achieve the above object, a touch control structure of the present invention further includes: a black matrix located on the lower surface of the first substrate, wherein the lower electrodes are disposed under the black matrix.

To achieve the above object, a touch control structure of the present invention further includes: a second substrate disposed under the first substrate, and the second substrate has a plurality of transistor arrays. The liquid crystal layer is arranged between the first substrate and the second substrate, and the second polarizer is arranged under the second substrate. the

To achieve the above object, a touch control structure of the present invention further includes: a backlight module disposed under the second polarizer.

In order to achieve the above object, in the touch structure of the present invention, the upper electrode further has a plurality of upper sensing series and upper terminal lines, and the lower electrode further has a plurality of lower sensing series and lower terminal lines. The upper sensing series are respectively connected to the upper terminal lines, and the lower sensing series are respectively connected to the lower terminal lines, wherein the upper sensing series and the lower sensing series are interlaced, and the upper terminal lines and the lower terminal lines are connected to the control chip.

To achieve the above object, a method for manufacturing a touch control structure of the present invention includes: providing a first substrate, and forming a lower electrode on the first substrate. A first polarizer is provided, wherein the first polarizer is arranged on the first substrate, and an upper electrode is formed on the first polarizer.

To achieve the above object, a method for manufacturing a touch control structure of the present invention includes: providing a second substrate, and forming a plurality of transistor arrays on the second substrate. A first substrate is provided, and a lower electrode is formed on the first substrate. A liquid crystal layer is provided and disposed between the first substrate and the second substrate.

A second polarizer is provided and pasted under the second substrate. A first polarizer is provided, an upper electrode is formed on the first polarizer, and the first polarizer is pasted on the first substrate.

In order to achieve the above object, a method for manufacturing a touch control structure of the present invention further includes: forming a black matrix on the lower surface of the first substrate, and forming the lower electrodes under the black matrix.

In order to achieve the above object, a method for manufacturing a touch structure of the present invention further includes: providing a backlight module, which is pasted under the second polarizer.

In order to achieve the above object, a method for manufacturing a touch control structure of the present invention, wherein the method for forming the lower electrode further includes: forming a metal layer under the black matrix, patterning the metal layer to form a plurality of lower sensing series and The lower terminal lines are connected to each other.

To achieve the above object, a method for manufacturing a touch control structure of the present invention further includes: forming a color filter layer under the lower electrode, and forming a common electrode layer under the color filter layer.

In order to achieve the above object, a method for manufacturing a touch structure of the present invention, wherein the method for forming the upper electrode further includes: forming a transparent conductive layer on the first polarizer, and forming a metal layer on the transparent conductive layer. Patterning the transparent conductive layer and the metal layer to form a plurality of upper sensing series and upper terminal lines with the metal layer on the transparent conductive layer, and removing the metal layer on the sensing series.

Description of drawings

FIG. 1 is a schematic diagram of an embodiment of the touch structure in the present invention.

2a-2i are schematic diagrams of an embodiment of the touch structure in the present invention.

Description of figure number:

First substrate 100,200

Second substrate 110,110

First polarizer 120,220

Second polarizer 130,230

Black matrix 140,240

Color filter layer 150,250

Common electrode layer 115,215

Complex Transistor Array 116,260

Upper electrode 180,280

Lower electrode 170,270

Backlight module 190,290

Liquid crystal layer 191,291

Complex upper sense series 181,281

Upper terminal line 182,282

Complex lower sense series 171,271

Lower terminal line 172,272

Hard transparent substrate 111

Adhesive layer112,212

Transparent conductive layer113,213

Metal layers 114,214.

Detailed ways

Please refer to FIG. 1 , which is a schematic diagram of a touch structure according to an embodiment of the present invention. First, the touch structure of the present invention includes: a first substrate 100 with a black matrix 140 disposed on the lower surface of the first substrate. The material of the first substrate 100 can be made of transparent materials such as glass, plastic or quartz, and the black matrix 140 can be used for light shielding, and its material can be resin polymer or polymide as the main body, A resin mainly composed of acrylic Acrylate and polyvinyl alcohol, but not limited thereto. The method for forming the black matrix 140 may be a coating method or a photolithographic etching method. The lower electrode 170 is arranged under the black matrix 140. The black matrix can cover the lower electrode 170. The lower electrode 170 has a plurality of lower sensing series 171 and lower terminal lines 172 connected to each other. The plurality of lower sensing series 171 is located in the black matrix. Below 140, the control chip is connected via the lower terminal line 172. The first polarizer 120 is disposed on the first substrate 100, and the lower surface of the first polarizer 120 has an upper electrode 180, and the upper electrode 180 further has a plurality of upper sensing series 181 and upper terminal lines 182, the plurality of upper sensing The series 181 and the upper terminal circuit 182 are connected to each other, and the upper terminal circuit 182 is used for connecting the control chip. A touch structure is formed by interlacing the upper electrodes 180 and the lower electrodes 170 , wherein the touch structure may be a capacitive touch structure. Next, there is a second substrate 110 disposed under the first substrate 100, wherein the second substrate 110 is made of a transparent material such as glass, plastic or quartz, and the upper surface of the second substrate 110 has a plurality of transistor arrays 116 . The liquid crystal layer 191 is disposed between the first substrate 100 and the second substrate 110 , and the plurality of transistor arrays 116 can control the direction of the liquid crystal layer 191 . The second polarizer 130 is disposed under the second substrate 110, and the pixel display brightness can be adjusted through the cooperation of the first polarizer 120, the second polarizer 130 and the liquid crystal layer 191. The main structure of the first polarizer 120 and the second polarizer 130 can be, for example, PET protective film, PSA pressure-sensitive adhesive, TAC triacetyl cellulose, PVA polyvinyl alcohol and PET release film, etc. limit. Furthermore, the adhesive layer 112 is further provided between the first polarizer 120 and the first substrate 100 , and the first polarizer 120 is pasted on the first substrate 100 by the adhesive layer 112 . In one embodiment, the hard transparent substrate 111 can also be arranged on the first polarizer 120, the adhesive layer 112 is arranged between the first polarizer 120 and the hard transparent substrate 111, and the hard transparent substrate 111 can be pasted by the adhesive layer 112. The hard transparent substrate 111 is on the first polarizer 120 , and the material of the hard transparent substrate 111 can be glass, strengthened glass, PC, PMMA or a composite material of PC and PMMA, for protecting the liquid crystal panel. The material of the adhesive layer 112 can be optical glue or water glue. The backlight module 190 is arranged under the second polarizer 130. The backlight module 190 provides a light source, and controls the pixel display luminance through the combination of the first polarizer 120, the second polarizer 130 and the liquid crystal layer 191, and combines the touch control structure to form a touch display device.

In another embodiment (not shown), in the above-mentioned touch structure, the lower electrode can also be arranged on the upper surface of the first substrate, and the upper electrode can be arranged on the upper surface of the first polarizer to form a touch control structure .

In yet another embodiment (not shown), in the above-mentioned touch structure, the upper electrode may also be disposed on the upper surface of the first polarizer, and the lower electrode may be disposed on the lower surface of the first substrate to form a touch structure.

In yet another embodiment (not shown), in the above-mentioned touch structure, the upper electrode may also be disposed on the lower surface of the first polarizer, and the lower electrode may be disposed on the upper surface of the first substrate to form a touch structure.

Please refer to FIG. 2 a to FIG. 2 i , which are schematic diagrams showing a manufacturing method of a touch structure according to an embodiment of the present invention. Firstly, a first substrate 200 is provided, and a black matrix 240 is formed on the lower surface of the first substrate 200 . The method of forming the black matrix 240 can be, for example, a coating method or a photolithographic etching method. Then, a metal layer 214 is formed on the lower surface of the black matrix 240, wherein the metal layer 214 can be formed by sputtering, evaporation, vacuum ion plating, electroplating, physical vapor deposition (PVD), chemical vapor deposition (CVD), etc. and other means. Then perform the first yellow light process to pattern the metal layer 214, wherein the first yellow light process includes forming a patterned photoresist layer (not shown) on the metal layer 214, and the material of the photoresist layer can be liquid Photoresist or dry film photoresist. Then perform an etching step to etch away the metal layer 214 not protected by the photoresist layer, and remove the patterned photoresist layer to form a lower electrode 270 including a plurality of lower sensing series 271 and lower terminal lines 272, wherein the plurality of lower sensing series Columns 271 and lower terminal lines 272 are located on the lower surface of the black matrix 240 . The plurality of lower sensing series 271 and the lower terminal circuit 272 are connected to each other, and the lower terminal circuit 272 is used for a connected control chip (not shown). The black matrix 240 may be used to shield the lower electrode 270 . Next, the color filter layer 250 and the common electrode layer 215 are formed under the lower electrode 270 . Then provide a second substrate 210, form a plurality of transistor arrays 216 on the upper surface of the second substrate 210, and then form a liquid crystal layer 291 disposed between the first substrate 200 and the second substrate 210, the common electrode layer 215 and the plurality of transistor arrays 216 is used to drive and control the alignment of liquid crystal molecules.

Next, the first polarizer 220 is provided, and the transparent conductive layer 213 and the metal layer 214 are sequentially formed on the lower surface of the first polarizer 220 . The method for forming the transparent conductive layer 213 and the metal layer 214 can be, for example, roll-to-roll physical vapor deposition (PVD), roll-to-roll chemical vapor deposition (CVD), roll-to-roll electroplating, roll-to-roll coating process and the like. Next, the above-mentioned first polarizer 220 is subjected to a first roll-to-roll yellowing process to pattern the transparent conductive layer 213 and the metal layer 214 . The first roll-to-roll yellow light process includes forming a patterned photoresist layer (not shown) on the metal layer 214, and the material of the photoresist layer can be liquid photoresist or dry film photoresist. Then perform an etching step, etch to remove the transparent conductive layer 213 and the metal layer 214 not protected by the photoresist layer, and remove the patterned photoresist layer to form a plurality of upper sensing series 281 and upper terminal lines 282 with the metal layer thereon . The material of the metal layer can be, for example, at least one or more conductive metal layers, and the material can be copper alloy, aluminum alloy, gold, silver, aluminum, copper, molybdenum and other conductive metals or conductive alloys. The structure of the multi-layer conductive metal layer, for example, can be a stacked structure of molybdenum layer/aluminum layer/molybdenum layer, or can be selected from copper alloy, aluminum alloy, gold, silver, aluminum, copper, molybdenum and other conductive metals or conductive alloys. A multi-layer conductive metal layer structure stacked with one or more materials. Next, the roll-to-roll second yellow light process is performed to remove the metal layer 214 on the plurality of upper sensing series 281 to form an upper electrode 280 including a plurality of upper sensing series 281 and upper terminal lines 282, wherein the plurality of The upper sensing series 281 and the upper terminal circuit 282 are connected to each other, and are connected to the control chip (not shown) through the upper terminal circuit 282 . The first polarizer 220 with the upper electrodes 280 is pasted on the first substrate 200 so that the upper electrodes 280 and the lower electrodes 270 are alternately arranged to form a touch structure, wherein the touch structure may be a capacitive touch structure.

In another embodiment, a backlight module 290 may be disposed under the second polarizer 230, and the backlight module 290 provides a light source through the first polarizer 220, the second polarizer 230 and the liquid crystal layer 291. Matching to control pixel display luminance, and matching with a touch structure to form a touch display device.

In another embodiment (not shown in the figure), in the manufacturing method of the above-mentioned touch structure, the lower electrode may also be arranged on the upper surface of the first substrate, and the upper electrode may be arranged on the upper surface of the first polarizer, forming touch structure.

In yet another embodiment (not shown), in the manufacturing method of the above-mentioned touch structure, the upper electrode can also be arranged on the upper surface of the first polarizer, and the lower electrode can be arranged on the lower surface of the first substrate to form a touch sensor. control structure.

In yet another embodiment (not shown), in the manufacturing method of the above-mentioned touch structure, the upper electrode may also be arranged on the lower surface of the first polarizer, and the lower electrode may be arranged on the upper surface of the first substrate to form a touch control structure.

Claims (12)

1. A touch structure, characterized in that, comprising: A first substrate having a lower electrode disposed on the first substrate; and A first polarizing plate is arranged on the first substrate, and the first polarizing plate has an upper electrode. 2. The touch control structure according to claim 1, further comprising: a black matrix located on the lower surface of the first substrate, wherein the lower electrode is disposed under the black matrix. 3. The touch control structure according to claim 1, further comprising: A second substrate, disposed under the first substrate, the second substrate has a plurality of transistor arrays; a liquid crystal layer disposed between the first substrate and the second substrate; and A second polarizing plate is arranged under the second substrate. 4. The touch control structure according to claim 3, further comprising: a backlight module disposed under the second polarizer. 5. The touch control structure according to claim 1, wherein the upper electrode further has a plurality of upper sensing series and an upper terminal circuit, and the lower electrode further has a plurality of lower sensing series and a lower terminal circuit The upper sensing series are respectively connected to the upper terminal lines, and the lower sensing series are respectively connected to the lower terminal lines, wherein the upper sensing series and the lower sensing series are interlaced, and the upper sensing series are interleaved with the lower sensing series. The terminal lines and the lower terminal lines are for connecting to a control chip. 6. A method for manufacturing a touch structure, characterized in that it comprises: providing a first substrate, forming a lower electrode on the first substrate; A first polarizer is provided, wherein the first polarizer is arranged on the first substrate, and an upper electrode is formed on the first polarizer. 7. A method for manufacturing a touch display structure, characterized in that it comprises: providing a second substrate, forming a plurality of transistor arrays on the second substrate; providing a first substrate, forming a lower electrode on the first substrate; providing a liquid crystal layer disposed between the first substrate and the second substrate; providing a second polarizer, pasted under the second substrate; providing a first polarizer, forming an upper electrode on the first polarizer; and Paste the first polarizer on the first substrate. 8. The manufacturing method of the touch control structure according to claim 6 or 7, further comprising: forming a black matrix on the lower surface of the first substrate, and the lower electrode is formed under the black matrix. 9. The manufacturing method of the touch control structure according to claim 7, further comprising: A backlight module is provided under the second polarizer. 10. The method for manufacturing a touch control structure according to claim 8, wherein the method for forming the lower electrode further comprises: forming a metal layer under the black matrix; and The metal layer is patterned to form a plurality of lower sensing series and lower terminal circuits connected to each other. 11. The manufacturing method of the touch control structure according to claim 6 or 7, further comprising: A color filter layer is formed under the lower electrode, and a common electrode layer is formed under the color filter layer. 12. The method for manufacturing a touch control structure according to claim 6 or 7, wherein the method for forming the upper electrode further comprises: Forming a transparent conductive layer on the first polarizing plate, forming a metal layer on the transparent conductive layer; patterning the transparent conductive layer and the metal layer, forming a plurality of upper layers with the metal layer on the transparent conductive layer Test series and upper terminal lines; and The metal layer on the sensing series is removed.