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Method for scanning capacitive touch screen

A technology of capacitive touch screen and scanning method, which is applied in the direction of electrical digital data processing, input/output process of data processing, instruments, etc.

Active Publication Date: 2014-04-30
SUZHOU PIXCIR MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Compared with the prior art, by changing the selection order of the wires connected to the excitation device, increasing the spacing between the excitation of the rising edge and the excitation of the falling edge, it is easier to detect changes in the induction signal due to excitation and touch, and solve the problem of In the embedded capacitive touch screen, it is difficult to detect the problem caused by the short distance between the wires

Method used

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  • Method for scanning capacitive touch screen
  • Method for scanning capacitive touch screen
  • Method for scanning capacitive touch screen

Examples

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with embodiment.

[0012] Please refer to figure 1 , an in-cell capacitive touch screen includes a thin film transistor (not shown), a wire connecting the gate and source of the thin film transistor ( figure 1 Only wires connected to the gate are shown in ) and touch detection means to which the wires are connected. And the wires are connected to the gates of the thin film transistors in the same row, and connected to the sources of the thin film transistors in the same column. The wires can also be connected in reverse, that is, the wires are connected to the sources of the thin film transistors in the same row, and connected to the gates of the thin film transistors in the same column.

[0013] The touch detection device includes an addressing device, a comparison device and an excitation device, the addressing device is used to select a wire that needs to be connected to the excitation devic...

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PUM

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Abstract

Disclosed is a method for scanning a capacitive touch screen. The capacitive touch screen comprises a plurality of wires. When the capacitive touch screen is scanned, one of the wires is selected to be connected with an exciting device every time, and between two times of adjacent scanning, a plurality of wires are reserved between the wires connected to the exciting devices at intervals. The selective sequence of the wires connected to the exciting devices is changed, the spacing between the exciting devices is increased, and thus sensing signal change caused by exciting and touching can be more easily detected.

Description

technical field [0001] The invention relates to a capacitive touch screen, in particular to a scanning method for an embedded capacitive touch screen. Background technique [0002] With the development of science and technology, touch screen electronic products are favored by people because of their better human-computer interaction experience. Touch screens are mainly divided into resistive, capacitive, infrared and acoustic wave types according to the type of sensor. The type touch screen has been widely used because of its advantages such as supporting multi-touch, precise positioning, and long life. [0003] In the existing capacitive touch screen, the touch panel and the display panel are mainly divided into three combinations. The first way is that the touch panel and the display panel are two independent devices, which are assembled into a capacitive touch panel by bonding up and down. Touch screen; the second way is to embed the touch panel between the color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
Inventor 保罗·格兰德维兹
Owner SUZHOU PIXCIR MICROELECTRONICS
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