Capacitive touch screen, manufacturing method thereof, and touch display device

A capacitive touch screen and electrode technology, which is applied in the direction of electrical digital data processing, optics, instruments, etc., can solve the problems of affecting the visual effect of the surface and large dielectric constant, so as to improve the visual effect of the surface, improve the reliability of the product, and reduce the process steps Effect

Active Publication Date: 2016-03-23
BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The surface protection layer 14 covers the entire transparent electrode layer 13, therefore, the pattern gap of the transparent conductive layer 13, that is, the gap between the electrodes of the first sensing line 131 and the electrodes of the second sensing line 132, will also fill the upper surface protection layer. layer 14, because the surface protection layer 14 generally chooses SiN x or SiO 2 , or resin material, the dielectric constant is large, and considering the limitation of touch sensitivity on capacitance, the width of the pattern gap of the existing transparent conductive layer is at least about 0.03mm, and the human eye can clearly see the pattern gap, affecting the surface Visual effects

Method used

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  • Capacitive touch screen, manufacturing method thereof, and touch display device
  • Capacitive touch screen, manufacturing method thereof, and touch display device
  • Capacitive touch screen, manufacturing method thereof, and touch display device

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Embodiment 1

[0044] An embodiment of the present invention provides a capacitive touch screen, such as figure 2 and image 3As shown, it includes: a transparent substrate 10 and a patterned transparent conductive layer 13, and the transparent conductive layer 13 is disposed on the transparent substrate 10, including: a first conductive layer extending along a first direction (the longitudinal direction as shown in the figure). The sensing line 131 and the second sensing line 132 extending along a second direction (such as a transverse direction perpendicular to the longitudinal direction),

[0045] Wherein, the first sensing line 131 remains continuous in the first direction, and is a series of sequentially connected electrodes; the second sensing line 132 includes a plurality of independent electrodes 132a separated from each other, and the independent electrodes 132a cross the first electrode in a bridging manner. The sensing lines 131 are connected to each other;

[0046] The gap d b...

Embodiment 2

[0063] The present invention also provides a manufacturing method of a capacitive touch screen, referring to Figure 2-5 , the touch screen includes: a transparent substrate 10, a transparent surface protection layer 14, a transparent conductive layer 13, an insulating layer 12, a second transparent conductive layer 15, and a metal layer 11 are sequentially arranged on the transparent substrate 10 from top to bottom, such as Figure 6 As shown, the method includes:

[0064] Step 101, such as Figure 7 As shown, the metal layer 11 and the second transparent conductive layer 15 are fabricated on the transparent substrate 10, and several groups of bridges are formed in the visible area of ​​the capacitive touch screen by using a patterning process. Each group of bridges includes a plurality of metal layers arranged at intervals along the second direction. The bridge 111 forms a metal trace 112 in the bonding area 20 of the capacitive touch screen, and at the same time forms a tr...

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Abstract

The invention discloses a capacitive touch screen and a manufacturing method of the capacitance touch screen and a touch display screen, and relates to the field of displaying. Pattern clearances of a transparent conducting layer can be reduced, and then surface visual effects are improved. The capacitive touch screen comprises a transparent substrate and a patterned transparent conducting layer, the transparent conducting layer comprises a first sense line extending along a first direction and a second sense line extending along a second direction, wherein the first sense line is maintained continuous in the first direction and is a cluster of electrodes which are connected in sequence, the second sense line comprises a plurality of independent electrodes which are separated from one another, and the independent electrodes are connected with one another through bridging the first sense line. The gaps between the electrodes in the first sense line and the independent electrodes of the second sense line are not filled with any material or filled with transparent insulating material, wherein the dielectric constant of the transparent insulating material is larger than or equal to 1 and less than 3.5, so that the width of the gaps can be reduced on the premise that touch sensitivity is not affected.

Description

technical field [0001] The invention relates to the display field, in particular to a capacitive touch screen, a manufacturing method thereof, and a touch display device. Background technique [0002] Touch-screen liquid crystal displays are developing rapidly and have gradually developed into mainstream flat-panel displays. From the perspective of technical principles, touch screen liquid crystal displays can be divided into five basic types: vector pressure sensing, resistive sensing, capacitive sensing, infrared sensing and surface acoustic wave sensing. , Embedded (Oncecellmode) and integral (Incellmode) three types. [0003] A common external capacitive touch screen such as figure 1 As shown, the transparent substrate 10 is sequentially provided with: a metal layer 11, an insulating layer 12, a transparent conductive layer 13 and a transparent surface protection layer 14, which require 4 photolithography (4Mask) process preparations, including: the first The first st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044G02F1/1333
Inventor 刘英明吴俊纬王海生杨盛际赵卫杰任涛刘红娟丁小梁
Owner BEIJING BOE OPTOELECTRONCIS TECH CO LTD
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