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display panel

A technology for display panels and transistors, applied in static indicators, optics, instruments, etc., to solve problems such as affecting on-current

Active Publication Date: 2016-03-09
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Panels using these two types of technologies have the problem that the aforementioned threshold voltage will affect the conduction current when providing touch sensing functions.

Method used

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Embodiment Construction

[0042] According to the foregoing description, it can be known that whether it is an amorphous silicon thin film transistor (TFT) LCD or a low temperature polysilicon TFT LCD, when providing in-cell touch sensing functions, they all face the variation of the threshold voltage of the TFT, and A phenomenon that affects the conduction current.

[0043] See Figure 2A , Which is a schematic diagram of a correction circuit provided in the touch sensing pixel according to the concept of the present invention. The touch sensing pixel 20 includes a gate line GL[n], a reference capacitor Cref and a liquid crystal capacitor Clc arranged between the gate line GL[n] and the ground voltage, and is electrically connected to the sensing line SL and the input voltage transistor TFT1, And a correction circuit 201 electrically connected to the transistor TFT1. Hereinafter, the operation of the transistor TFT1 will be described first, and then the purpose of the correction circuit 201 will be desc...

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PUM

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Abstract

The invention relates to a display panel. The display panel comprises at least one touch sensing pixel and a reading circuit. The at least one touch sensing pixel comprises a first grid line, a sensing line, a touch sensing unit electrically connected between the first grid line and ground voltage, a first transistor electrically connected with the touch sensing unit and the sensing line and a correcting circuit electrically connected with the first transistor and used for providing correction bias voltage for a first transistor grid according to reference voltage and critical voltage. The reading circuit is electrically connected with the sensing line and outputs a touch reading signal by responding to current change of the sensing line.

Description

Technical field [0001] The invention relates to a display panel, and particularly a display panel with touch function. Background technique [0002] With the integration of touch technology and display technology, the application of in-cell touch sensing on the panel has become increasingly popular. Please refer to Figure 1A , Which shows a schematic diagram of the touch sensing function provided in-line on the panel. This diagram illustrates how to use a touch sensing circuit to determine whether each pixel generates a touch operation on the existing display panel technology. [0003] A plurality of vertical data lines (DL for short) and multiple horizontal selection gate lines (GateLine, GL for short) are provided on the panel. The data line DL is used to provide data for screen display, and the gate line drives the pixels on each column in a sequential scanning manner. [0004] As far as the display technology is concerned, each individual color pixel on the panel is generated ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G02F1/133G02F1/1362G06F3/147
Inventor 谢承祖
Owner INNOCOM TECH (SHENZHEN) CO LTD