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Blackening method of a metal mesh touch screen and a metal mesh touch screen

A metal grid and touch screen technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve the problem of high etching requirements, poor etching, low anti-metal film layer and metal film layer etch rate Inconsistency and other issues

Inactive Publication Date: 2019-02-22
TRULY OPTO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the blackening process, the sputtered low-reflection metal film layer and the metal film layer are sequentially stacked, and then the low-reflection metal film layer and the metal film layer are simultaneously etched with an etching solution to form a composite electrode network with a "sandwich" structure. However, the inconsistency in the etch rate between the low-reflection metal film layer and the metal film layer will lead to various defects such as poor etching, jagged lines, and different colors, especially when the fineness of the metal electrode grid reaches a line width of about 5um. Higher requirements for etching

Method used

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  • Blackening method of a metal mesh touch screen and a metal mesh touch screen
  • Blackening method of a metal mesh touch screen and a metal mesh touch screen
  • Blackening method of a metal mesh touch screen and a metal mesh touch screen

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Experimental program
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Embodiment 1

[0030] Such as figure 1 Shown, a kind of blackening method of metal grid touch screen comprises:

[0031] Step 1: Provide a metal film substrate, such as figure 2 As shown, the metal thin film substrate includes a substrate substrate 1 and a metal thin film layer 2 disposed on the substrate substrate 1;

[0032] In this step 1, the base material 1 can be transparent materials such as PE, PC, PMMA, PI or glass; the metal thin film layer 2 can be metal materials such as Cu, Ag, Al or Ti, which can be made Plating, vapor deposition or other processes are fabricated on the substrate base material 1 .

[0033] Step 2: If image 3 As shown, a layer of photosensitive material layer 3 is coated on the metal thin film layer 2, and the reflectance of the photosensitive material layer 3 is lower than that of the metal thin film layer 2;

[0034] In this step 2, the photosensitive material layer 3 can be photosensitive ink or photoresist, which can be coated and covered on the entire...

Embodiment 2

[0048] Such as Figure 6 As shown, a metal grid touch screen formed by the blackening method described in Embodiment 1 includes a substrate 1 and a metal electrode grid 21 arranged on the substrate 1, and also includes an overlapping The photosensitive material grid 31 disposed on the metal electrode grid 21 has a lower light reflectance than the metal electrode grid 21 .

[0049] Preferably, the photosensitive material grid 31 is black conductive material.

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Abstract

The invention discloses a blackening method of a metal mesh touch screen and a metal mesh touch screen. The blackening method comprises the following steps: 1. Providing a metal thin film substrate, wherein the metal thin film substrate comprises a substrate substrate and a metal thin film layer arranged on the substrate substrate; 2, coating a layer of photosensitive material on that metal film lay, wherein the reflectance of the photosensitive material layer is lower than that of the metal film layer; 3, exposing and developing that photosensitive material lay to form a photosensitive material grid; 4, etching that metal thin film layer to form a metal electrode grid overlap with the photosensitive material grid. The blackening method integrates the blackening process of the metal mesh touch screen into the photolithography process, which not only does not cause defects of the metal electrode mesh such as bad etching, line sawtooth, heterochrome and the like, but also saves a stripping process.

Description

technical field [0001] The invention relates to the touch field, in particular to a method for blackening a metal grid touch screen and the metal grid touch screen. Background technique [0002] Metal grid touch screens have attracted more and more attention in the market due to their advantages of low resistance, integration, and simple manufacturing process. Especially, the characteristics of ultra-low resistance make them well used in medium and large size display products. And it also supports active pen. [0003] Due to the high reflectivity of metal materials, metal electrode grids are easy to reflect light and form display problems such as background shadows and moiré fringes. Therefore, it is necessary to add a blackening process to reduce the surface reflectivity. The blackening process refers to superimposing a layer of low-reflection metal grid (generally an oxidized metal grid) on one or both sides of the metal electrode grid to form a composite electrode grid w...

Claims

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Application Information

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IPC IPC(8): G06F3/041G06F3/045
CPCG06F3/0412G06F3/045G06F2203/04103
Inventor 刘威吴德生
Owner TRULY OPTO ELECTRONICS