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Mutual-capacitance touch control unit, touch control liquid crystal display panel and driving method

A mutual-capacitance touch and liquid crystal panel technology, which is applied to the input/output process of electrical digital data processing, instruments, and data processing, etc. Accuracy, the effect of improving sensitivity

Active Publication Date: 2015-11-25
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the touch action of the human body has a great influence on the detection accuracy of the capacitive touch screen
Specifically, such as figure 1 As shown, the touch target is the location of point A, but due to the influence of the touch capacitor array and the wiring of the electrode leads that form each touch capacitor, when you want to trigger at point A, it is likely to cause the location of point B at the same time. The value of the touch capacitor at the position also changes, resulting in misjudgment and affecting the touch effect

Method used

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  • Mutual-capacitance touch control unit, touch control liquid crystal display panel and driving method
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  • Mutual-capacitance touch control unit, touch control liquid crystal display panel and driving method

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Embodiment Construction

[0027] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the implementation process of how to apply technical means to solve technical problems and achieve corresponding technical effects in the present invention. The embodiments of the present application and the various features in the embodiments can be combined with each other under the premise of no conflict, and the formed technical solutions are all within the protection scope of the present invention.

[0028] 2( a )-( b ) are schematic structural diagrams of a mutual capacitance touch unit according to an embodiment of the present application, wherein FIG. 2( b ) is a schematic diagram along the I-I' direction of FIG. 2( a ). The mutual capacitive touch unit includes a scanning electrode layer (on which a plurality of scanning electrodes 21 are arranged), a sensing electrode layer (on which a ...

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Abstract

The invention discloses a mutual-capacitance touch control unit, a touch control liquid crystal display panel and a driving method. The mutual-capacitance touch control unit comprises a scan electrode layer, an insulation layer, an induction electrode layer and a touch control driving circuit; the scan electrode layer is provided with multiple scan electrodes; the induction electrode layer is provided with multiple induction electrodes, and each induction electrode is electrically connected with the touch control driving circuit through a touch control induction wire; each induction electrode is arranged between every two adjacent scan electrodes and does not overlap with the scan electrodes adjacent to the induction electrode; the touch control induction wires are at least partially covered with the scan electrodes; a touch control capacitor is formed between each induction electrode and the corresponding scan electrode adjacent to the induction electrode. According to the mutual-capacitance touch control unit, the interference of an external touch action to the adjacent touch control capacitor and a connecting wire of the touch control capacitor can be effectively shielded, the detection precision is improved, and meanwhile the sensitivity of the touch control unit can be improved.

Description

technical field [0001] The invention relates to the field of liquid crystal display devices, in particular to a mutual capacitance touch unit, a touch liquid crystal panel and a driving method. Background technique [0002] With the rapid development of liquid crystal display technology, touch devices (such as touch screen TouchScreenPanel) have gradually spread in people's lives. Currently, touch screens can be classified into plug-in touch screens, surface-covering touch screens, and built-in touch screens according to their composition and structure. Among them, the in-cell touch screen is favored by people because it can be embedded in the liquid crystal display to reduce the thickness and production cost of the liquid crystal display. [0003] The embedded touch screen mainly uses the principle of self-capacitance or mutual-capacitance to identify the touched position. When the human body does not touch the LCD screen, the respective capacitance or mutual capacitance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044G06F3/041
CPCG06F3/0445
Inventor 徐向阳
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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