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Integrated touch screen and detecting method thereof

A touch screen and touch electrode technology, which is applied in the field of touch screen, can solve the problems of low touch detection accuracy and low signal-to-noise ratio, and achieve the effects of simple and easy detection method, improved signal-to-noise ratio, and accurate detection

Inactive Publication Date: 2010-12-29
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] However, the integrated touch screen based on the above principle only determines whether there is a touch by detecting the capacitance change caused by the deformation caused by the pressure, and the signal-to-noise ratio is low, so the accuracy of touch detection is low.

Method used

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  • Integrated touch screen and detecting method thereof
  • Integrated touch screen and detecting method thereof

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Embodiment Construction

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, an embodiment of the integrated touch screen according to the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0030] In the prior art, liquid crystal capacitance is changed through deformation of a glass substrate. The applicant finds that there are other ways to change the capacitance of the liquid crystal. For example, a finger is a conductor that can produce a capacitive sensing effect, so that the finger itself can also affect the capacitance of the liquid crystal. In a specific embodiment of the present invention, the inventor combines the two effects of the capacitance change caused by the deformation of the screen and the capacitance change caused by the fi...

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Abstract

The invention provides an integrated touch screen and a detecting method of the integrated touch screen. The integrated touch screen comprises an upper baseplate and a lower baseplate, wherein a touch electrode is formed on the upper baseplate; and the lower baseplate is arranged oppositely to the upper baseplate, grid electrode wires, a drive wire, an induction wire and touch pixels are formed on the lower baseplate, each touch pixel comprises a first transistor, a second transistor, a touch drive electrode and a touch induction electrode, the touch drive electrode and the touch induction electrode are arranged between the grid electrode wires, a first capacitor is formed by the touch drive electrode and the touch electrode, and a second capacitor is formed by the touch induction electrode and the touch electrode. The integrated touch screen has the advantages of higher signal-to-noise ratio and more accurate touch detection.

Description

technical field [0001] The invention relates to the field of touch screens, in particular to an integrated touch screen and a detection method for the integrated touch screen. Background technique [0002] The touch screen technology provides a more intuitive and convenient user interface for liquid crystal display devices, and has been widely used at present. In the existing touch screens, the touch screen and the display screen are generally manufactured separately and then assembled together. This will inevitably increase the thickness of the display screen, and due to the addition of several layers of transparent glass or film, the display light transmittance and contrast will also decrease significantly. In addition, the cost of this approach is also higher. Therefore, an integrated touch screen structure in which the touch screen function is integrated into the liquid crystal cell has recently been proposed to reduce the thickness of the liquid crystal display module...

Claims

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Application Information

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IPC IPC(8): G02F1/133G02F1/1362G02F1/1368G06F3/044
Inventor 陈悦邱承彬蔡连杰
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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