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A kind of capacitive touch screen and preparation method

一种电容式触摸屏、电极的技术，应用在电数字数据处理、仪器、计算等方向，能够解决影响触摸屏触摸感应灵敏度、传感器电极充电不足、RC负载重等问题，达到良好触摸效果、充电快、降低RC负载的效果

Active Publication Date: 2016-04-13
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Tests have proved that when a conventional touch sensor panel (TouchSensorPanel, TSP for short) is directly produced in a vertical electric field type liquid crystal display, the coupling between the sensor electrodes and the common electrodes in the liquid crystal display is very large, that is, the entire effective of a single sensor electrode The area is one plate area of ​​the capacitor, which leads to the heavy RC load (loading), which further causes the sensor electrode to be undercharged during sampling, which affects the touch sensitivity of the touch screen.

Method used

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  • A kind of capacitive touch screen and preparation method
  • A kind of capacitive touch screen and preparation method
  • A kind of capacitive touch screen and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like Figure 5-7 As shown, the capacitive touch screen includes a substrate and a sensor electrode 4 arranged on the substrate. The sensor electrode 4 includes a first electrode group 41 arranged in parallel in multiple rows and a second electrode group 42 arranged in parallel in a plurality of columns. The first electrode group 41 includes A plurality of first electrodes 411 are electrically connected in sequence, and the second electrode group 42 includes a plurality of second electrodes 421 electrically connected in sequence. In this embodiment, both the first electrode 411 and the second electrode 421 include peripheral electrodes distributed around the periphery and a central electrode electrically isolated from the peripheral electrodes, and adjacent peripheral electrodes in the same row / column are electrically connected to each other.

[0059] like Figure 7 As shown, a closed first isolation trench 412 is opened in the first electrode 411. The inner side of the...

Embodiment 2

[0102] The difference between this embodiment and Embodiment 1 is that, in the capacitive touch screen structure of this embodiment, the second conduction part is formed on the same layer as the first electrode and the second electrode, and the first conduction part is arranged on the second conduction part. Below the part, a via hole is provided in the insulating layer, and the first conducting part is electrically connected to the first electrode through the via hole.

[0103] In this embodiment, the first electrode, the second electrode and the second conducting part are formed by indium tin oxide; A material is formed.

[0104] Correspondingly, the preparation method specifically includes the following steps:

[0105] Step S11: forming a pattern including a first conducting portion on the substrate.

[0106] Step S12 : On the substrate after step S11 , an insulating layer is formed, and a via hole is opened in the insulating layer in a region corresponding to the end of ...

Embodiment 3

[0111] The difference between this embodiment and Embodiments 1 and 2 is that, in this embodiment, only the first electrode in the first electrode group, or only the second electrode in the second electrode group is provided with a closed isolation ditch groove.

[0112] Correspondingly, when forming the sensor electrodes in the manufacturing process, the mask used in the exposure process not only has patterns corresponding to the formation of the first electrode 411 and the second electrode 421, but also has patterns corresponding to the formation of the first isolation trench. The groove 412 (corresponding to the closed isolation trench opened in the first electrode); or, also has a pattern corresponding to the formation of the second isolation trench 422 (corresponding to the closed isolation trench opened in the second electrode). Wherein, the pattern corresponding to the formation of the first isolation trench 412 or the second isolation trench 422 is the photoresist comp...

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Abstract

A capacitive touch screen and a method for fabricating the same. The capacitive touch screen includes a substrate and a sensor electrode thereon, the sensor electrode includes first electrode groups which are arranged in the row direction and parallel to each other, second electrode groups which are arranged in the column direction and parallel to each other; the first electrode group includes first type of electrodes which are sequentially electrically connected, the second electrode group includes second type of electrodes which are sequentially electrically connected, each of at least one type of electrodes of the first type of electrodes and the second type of electrodes includes a peripheral electrode arranged in the periphery and a central electrode electrically isolated from the peripheral electrode, and peripheral electrodes of two adjacent electrodes of the electrode group including the at least one type of electrodes are electrically connected to each other.

Description

technical field [0001] The invention belongs to the field of display technology, and relates to a capacitive touch screen and a preparation method. Background technique [0002] Touch screen is the latest information input device at present. It can realize human-computer interaction simply, conveniently and naturally, and provide people with a brand-new method of multimedia human-computer interaction. The earth satisfies people's visual and tactile enjoyment. [0003] According to different working principles and transmission media, touch screens can be divided into resistive, capacitive, surface acoustic wave, and infrared types. Among them, capacitive touch screens are widely used because of their high accuracy and strong anti-interference ability. [0004] At the same time, in order to achieve thinner and lighter touch screens, there have been methods of integrating touch panel functions with liquid crystal panels, specifically including the "In-cell" method and the "On-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/044
CPCG02F1/13338G06F3/0445G06F3/0446G06F3/0448G06F2203/04103Y10T29/49105
Inventor 王静鲁友强
Owner BOE TECH GRP CO LTD