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Touch control display panel detection circuit and detection method

A touch display panel and detection circuit technology, applied in the direction of measuring electrical variables, measuring resistance/reactance/impedance, capacitance measurement, etc., can solve the problems of low detection efficiency and inconvenient operation, and achieve simplified structure, improved yield, and improved The effect of detection efficiency

Active Publication Date: 2017-05-17
CHIPONE TECH BEIJINGCO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] Existing detection methods for touch display panels require the use of special detection instruments, which are easily affected by signal access and inconvenient to operate, resulting in low detection efficiency

Method used

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  • Touch control display panel detection circuit and detection method
  • Touch control display panel detection circuit and detection method
  • Touch control display panel detection circuit and detection method

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Embodiment Construction

[0034] Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the various figures, identical elements are indicated with similar reference numerals. For the sake of clarity, various parts in the drawings have not been drawn to scale. In addition, wirings other than the corresponding driving electrodes and sensing electrodes are not drawn in the figure, and some well-known parts may not be shown.

[0035] In the following, many specific details of the present invention are described, such as device structures, materials, dimensions, processing techniques and techniques, for a clearer understanding of the present invention. However, the invention may be practiced without these specific details, as will be understood by those skilled in the art.

[0036] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0037] figure 2 is a three-dimensional structure diag...

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PUM

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Abstract

The invention discloses a touch control display panel detection circuit and a detection method. The detection method comprises the following steps: using a plurality of switches to have a plurality of induction wires, a plurality of grid electrode scanning wires and a plurality of source electrode data wires selectively connected to pulse signals or grounded; obtaining a plurality of detection signals according to the signals on the selected induction wires from the plurality of induction wires in different connection states; and based on the plurality of detection signals, determining the parasitic capacitance of the electrodes and the layout wires. The detection method of the invention is capable of detecting the quality of a detection panel and assisting to change the manufacturing technique for increased yield rate. Further, the detection method could simplify the structure of the detection circuit and can even reuse already available touch control detection circuit for the detection of parasitic capacitance, which reduces the circuit detection cost and increases the detection efficiency.

Description

technical field [0001] The present invention relates to the technical field of touch control, in particular to a detection circuit and a detection method of a touch display panel. Background technique [0002] Liquid crystal display devices have been widely used in mobile terminals such as cell phones and large-sized display panels such as flat TVs. The liquid crystal display device includes two layers of glass substrates and a liquid crystal layer (Liquid CrystalLayer) sandwiched between them. The pixel electrode and the common electrode are formed on the glass substrate, and the rotation of the liquid crystal molecules of the liquid crystal layer is controlled by applying a driving voltage between them, thereby changing the light transmittance. [0003] figure 1 An equivalent circuit diagram of a liquid crystal display device according to the prior art is shown. There is a liquid crystal layer between the pixel electrode and the common electrode, which can be equivalent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26G09G3/00
CPCG09G3/006G01R27/2605
Inventor 曲孔宁刘成
Owner CHIPONE TECH BEIJINGCO LTD
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