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Method for increasing pixel electrode charging time under gate in array (GIA) driving

A technology of pixel electrode and charging time, applied in the field of charging of pixel electrode, can solve the problems of increasing the charging time of pixel electrode under GIA driving, affecting the display effect, insufficient charging time, etc., so as to solve the problem of insufficient charging and increasing charging time, and the method is simple Effect

Inactive Publication Date: 2010-12-01
NANJING CEC PANDA LCD TECH
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Problems solved by technology

[0005] The purpose of the present invention is to invent a method for increasing the charging time of the pixel electrode under GIA driving in order to solve the problem that the charging time of the pixel electrode is insufficient due to the influence of OE in the existing driving method, which affects the display effect.

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  • Method for increasing pixel electrode charging time under gate in array (GIA) driving
  • Method for increasing pixel electrode charging time under gate in array (GIA) driving
  • Method for increasing pixel electrode charging time under gate in array (GIA) driving

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as Figure 3-6 shown.

[0028] A method for increasing the charging time of a pixel electrode driven by GIA, comprising the following steps:

[0029] First, add at least two (in practice, one, three, four or more) dummy gate (dummy gate) wirings in the array circuit, and open the dummy gate first when applying the gate pulse. pole (dummy gate) wiring grid pulse, and then start from the first grid wiring to open all the grid wiring on the array circuit in turn; the dummy gate of the present invention exists objectively but does not directly participate in display driving The general term for the grid.

[0030] Secondly, add a detection circuit, which is used to detect the gate signal resistance capacitance delay (gate RC delay) value of the dummy gate from left to right or from right to left; the detection circuit can be set in the glass a...

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Abstract

The invention relates to a method for increasing pixel electrode charging time under gate in array (GIA) driving. In conventional thin film transistor-liquid crystal display (TFT-LCD) system driving, an output enable (OE) signal is generally arranged to solve the problem of data latching error caused by gate RC delay; and OE time is generally close to gate line RC delay so that the charging time of a pixel electrode is reduced and the phenomenon is more remarkable along with the increase of a refresh frequency and the gate line RC delay. OE time can be saved only by increasing one or two dummy gate cables in a glass array circuit so that enough charging time of the pixel electrode is ensured and is not affected by an array process (metal thickness, CD line width, sheet-resistance and the like). Moreover, the application of the method in a staggered GIA circuit is particularly important.

Description

technical field [0001] The invention relates to a liquid crystal panel technology, in particular to a method for charging a pixel electrode, specifically a method for increasing the charging time of a pixel electrode driven by a GIA (gate in array, gate drive integrated in an array circuit). Background technique [0002] The driving architecture of traditional thin film transistor liquid crystal display (TFT-LCD) mainly includes gate (gate) signal and data (data) signal, such as figure 1 shown. [0003] On a gate line (gate line), from the initial section (gate in) to the end section (end side), the situation of gate signal RC delay (gate signal RC delay) at each position, and the system must address this issue The timing diagram of the set output enable (OE, Output enable) signal, such as figure 2 As shown, the charging time of the pixel electrode must be reduced due to the existence of the output enable (OE). Taking 60Hz, 1902*1080 resolution as an example, the chargin...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 周刘飞
Owner NANJING CEC PANDA LCD TECH
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