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Liquid crystal display panel data signal distortion compensating process and circuit

A liquid crystal display panel and data signal technology, applied to static indicators, instruments, etc., can solve the problems of increased cost, inability to effectively improve uneven brightness, uneven brightness between the top and bottom of the display panel, and the center

Active Publication Date: 2014-07-02
INNOLUX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a double drive assembly is required, which necessitates a considerable additional cost
Furthermore, when the size of the liquid crystal display panel increases to a certain extent, the current improved method of using double-sided driving, because the unilateral resistance-capacitance effect becomes more and more obvious, will still cause the problem of uneven brightness between the upper and lower sides and the center of the liquid crystal display panel, such as image 3 shown
In this way, despite the increase in cost, the dilemma of uneven brightness cannot be effectively improved

Method used

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  • Liquid crystal display panel data signal distortion compensating process and circuit
  • Liquid crystal display panel data signal distortion compensating process and circuit
  • Liquid crystal display panel data signal distortion compensating process and circuit

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Embodiment Construction

[0046] see figure 1 and Figure 4a , which provide scanning signals with different turn-on time widths T1, T2, T3, . Such as Figure 4a As shown, the signal waveform of the data signal of the ideal data line will not be distorted, and the scan signals with different turn-on time widths T1, T2, T3, etc. provided by the scan lines 20a, 20b, ... and 20m will cause different Changes in brightness. For example, when the on-time widths T1 , T2 , T3 . . . increase linearly from top to bottom, the vertical brightness of the liquid crystal display panel will show a linear change from top to bottom. Taking the transistors 12ba, 12ca, ... 12ma of a certain column as an example, when the turn-on time width T1, T2, T3 ... etc. increases linearly from top to bottom, the signal waveform of the data signal of the ideal data line will not be distorted, so that the Therefore, the total electric charge of the capacitor of the display unit exhibits a linear change increasing from top to botto...

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Abstract

The present invention is a method and circuit for compensation of data signal distortion of a liquid crystal display panel. It uses a method and circuit to adjust the opening time width of the scanning signal to increase linearly. The total charge amount of the capacitor provided to the display unit of the row can be the same. Therefore, The reflected brightness will be the same, so the uneven brightness caused by the resistance and capacitance effect of the data line can be significantly improved, thereby improving the uneven brightness of the liquid crystal display panel.

Description

technical field [0001] The invention provides a method and circuit for compensating data signal distortion of a liquid crystal display panel, especially a method and circuit for adjusting the opening time width of a scanning signal, so as to improve the phenomenon of uneven brightness of the liquid crystal display panel. Background technique [0002] Please refer to figure 1 , which is a schematic diagram of a conventional liquid crystal display panel. The liquid crystal display panel includes: a data driver 10 , a scan driver 20 , a plurality of display units, a plurality of scan lines and a plurality of data lines. Wherein, each set of interleaved data lines and scan lines can be used to control a display unit. For example: the data line 16a and the scan line 20b can be used to control the display unit 13, wherein the display unit 13 includes a transistor 12ba and a capacitor 14ba, and the gate and drain of the transistor 12ba are electrically connected to the scan line ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36
Inventor 杨鹦文黄永历
Owner INNOLUX CORP