Single-layer externally hanging touch panel and manufacturing method thereof and liquid crystal display

A touch screen and plug-in technology, which is applied in the directions of instruments, optics, and electrical digital data processing, etc., can solve problems such as large steepness, pollution of the touch screen in the sputtering equipment chamber, and difficult process of single-layer plug-in touch screen, so as to avoid pollution Effect

Inactive Publication Date: 2013-01-16
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 2. The BM Pattern 102 formed by the photolithography process has a slope-shaped first step difference portion 112 in the parts located in the visible area of ​​the screen and the non-visible area of ​​the screen. Correspondingly, the insulating layer 105 also has a slope-shaped first step difference. Two-stage difference part 113, in the subsequent process, discontinuous ITO trace 106 and continuous type ITO trace 107 will be formed on the surface of the second stage difference part 113, if the first stage difference part 112 formed by photolithography is too steep, the corresponding second The steepness of the step difference part 113 will also be relatively large, which will easily lead to disconnection of the di

Method used

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  • Single-layer externally hanging touch panel and manufacturing method thereof and liquid crystal display
  • Single-layer externally hanging touch panel and manufacturing method thereof and liquid crystal display
  • Single-layer externally hanging touch panel and manufacturing method thereof and liquid crystal display

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0076] Example one

[0077] This embodiment provides a manufacturing method of a single-layer external touch screen, such as Figure 3(1)~3(11) As shown, the process manufacturing method specifically includes:

[0078] Step A, coating a layer of BM material on the glass substrate 301, and then photoetching the layer of BM material to form a BM Pattern 302 covering the non-visible area of ​​the screen, as shown in Figure 3(1), the BM There is a slope-shaped first step portion 303 on the pattern 302 near the visible area of ​​the screen;

[0079] Step B, the glass substrate 301 of the BM Pattern 302 is coated with a layer of transparent and insulating resin-based material, the baking temperature of the resin-based material is lower than the lowest temperature that causes the BM material to volatilize, and then the resin-based material Baking is performed to form the first film layer 304. As shown in FIG. 3(2), the thickness of the first film layer 304 is slightly larger than the thic...

Example Embodiment

[0105] Example two

[0106] This embodiment provides a single-layer external touch screen, such as Figure 4 As shown, it includes: substrate 401, BM Pattern 402, step portion 403, first film 404, first ramp-shaped portion 405, isolation pad 406, metal trace 407, metal bridge 408, second film 409, vias 410, first hollow pattern 411 (not shown in the figure), second slope portion 412, discontinuous conductive trace 413, continuous conductive trace 414, third film layer 415, second hollow pattern 416, flexible printing Circuit board 417;

[0107] Among them, the substrate 101 is made of glass material; it covers the entire screen area; it is used to carry the functional units that constitute the entire single-layer external touch screen;

[0108] BM Pattern 402 is made of BM material (resin material containing black dye); it is formed on the substrate 401 and is located in the non-visible area of ​​the screen; used to block the light in the non-visible area of ​​the screen; the BM Pat...

Example Embodiment

[0121] Example three

[0122] This embodiment provides a liquid crystal display, such as Figure 5 As shown, the display includes: a single-layer external touch screen 501, an OC layer 502, and a TFT-LCD liquid crystal display 503; among them,

[0123] The single-layer external-mounted touch screen 501 has the single-layer external-mounted touch screen structure provided by the present invention;

[0124] The OC layer 502 adopts optical adhesive OCA, and is coated on the outer surface of the third film layer in the single-layer external touch screen 501;

[0125] The TFT-LCD liquid crystal display 503 is bonded to the single-layer external touch screen 501 through the OC layer 502.

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Abstract

The invention discloses a single-layer externally hanging touch panel and a manufacturing method thereof, and a liquid crystal display. The method comprises the following steps: forming a black matrix pattern (BM Pattern), which is positioned in a non-visual region of a screen on the surface of a substrate; forming a first film on the surface, on which the BM Pattern is formed, of the substrate, wherein the first film is made of transparent material and the baking temperature of the transparent material is lower than the lowest volatilization temperature of the material forming the BM Pattern; forming an isolating film and a spattering metal layer on the surface of the first film sequentially, wherein the isolating film is made of transparent conductive material and the transparent conductive material is not volatized at high temperature of the spattering metal layer; and etching the metal layer and the isolating film to form a metal pattern and an isolating pad respectively. The first film, the isolating film and the spattering metal layer are formed sequentially, so that a chamber of spattering equipment and the touch panel are not polluted.

Description

technical field [0001] The invention relates to the field of touch screen manufacturing, in particular to a single-layer external touch screen, a manufacturing method thereof, and a liquid crystal display. Background technique [0002] At present, the touch screen technology develops rapidly, and has gradually developed into a commonly used technology in the field of touch control and liquid crystal display. According to the structure, the touch screen can be divided into the following three types: Add On Mode Touch Panel, On Cell Touch Panel and In Cell Touch Panel. Therefore, in the field of liquid crystal displays, most of them use external touch screens. [0003] The original plug-in touch screen has a two-layer substrate structure, which is the cover glass Cover Glass that protects the screen on the outer layer and the Touch Panel Glass that senses touch points on the inner layer. However, with the rapid development of liquid crystal display technology and consumers' ...

Claims

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Application Information

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IPC IPC(8): G06F3/041G02F1/1333
Inventor 刘英明王海生胡明
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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