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Scan method of touch signal

A technology of touch signal and scanning method, which is applied in the field of touch display, can solve the problems of restricting product development, insufficient scan time of touch signal, long scan time of display signal, etc., so as to increase the scan time, reduce the occupied time, high resolution effects

Active Publication Date: 2015-09-23
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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Problems solved by technology

With the improvement of product resolution, the time required for display signal scanning is getting longer and longer, and the scanning time required for corresponding touch signal scanning is compressed, and the scanning time of touch signal is insufficient, which limits the product's develop

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  • Scan method of touch signal

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Embodiment Construction

[0034] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0035] see Figure 5 , the present invention provides a touch signal scanning method, comprising the following steps:

[0036] Step 1, such as figure 1 As shown, a touch display panel is provided.

[0037] The touch display panel includes m horizontal driving lines Tx(1)-Tx(m) parallel to each other and arranged in sequence, and n vertical receiving lines Rx(1)-Rx(n) parallel to each other and arranged in sequence ), where m and n are both positive integers greater than 2.

[0038] Specifically, the driving lines Tx(1)~Tx(m) and the receiving lines Rx(1)~Rx(n) can be formed on the same layer, preferably, the driving lines Tx(1)~Tx(m) The receiving lines Rx( 1 )˜Rx(n) are all formed on the common electrode layer. The driving lines Tx(1)-Tx...

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Abstract

The invention provides a scan method of a touch signal. Different scanning impulse signals, which are corresponding to a plurality of drive lines in quantity, are used to scan simultaneously, and each scanning impulse signal is encoded correspondingly. Meanwhile, all scanning impulse signals are synchronously received by each reception line in a plurality of reception lines, and a control chip is used to decode received signals received by each reception line so as to determine the sources of different signal fields in the received signals. When a finger touches, according to the code of a signal field with the reduced semaphore, it is determined that the drive line touched by the finger is the drive line providing the scanning impulse signal corresponding to the code,, and the position of the touch is located by combining with the reception line corresponding to the received signal of the signal field with the reduced semaphore. The scan method of the invention enables an In Cell type touch display device to reduce the time of scanning touch signals and increase the time of scanning display signals, thereby prompting the In Cell type touch display device to develop to have a higher resolution ratio.

Description

technical field [0001] The present invention relates to the technical field of touch display, in particular to a scanning method for touch signals. Background technique [0002] With the development of display technology, liquid crystal displays (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, televisions, personal Various consumer electronic products such as digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. [0003] The touch panel (Touch panel) provides a new human-computer interaction interface, which is more direct and humanized in use. Integrating the touch panel and the flat display device to form a touch display device can enable the flat display device to have a touch function, and input can be performed through fingers, stylus pens, etc., and the operation is more intuitive and convenient. [0004] At present, liquid crystal displays and touch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/041
CPCG06F3/0412G06F3/04166G06F3/0443G06F3/0445G06F3/0446
Inventor 谢剑星左清成
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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