Cell test method and liquid crystal display panel for a tri-gate type pixel structure

Abstract

A cell test method for a liquid crystal display panel includes the following steps. A waveform sequence to shorting bars is provided, wherein the waveform sequence includes that the first gate line sends a voltage of turn on signal and the second and third gate lines send a voltage of turn off signal at the first and second time periods; and the waveform sequence further comprises that the first and second data lines respectively send first and second voltages at the first and second time periods, the first threshold voltage is higher than the first voltage, the first voltage is higher than the common voltage, the common voltage is higher than the second voltage, and the second voltage is higher than the second threshold voltage, whereby pixels defined by the first gate line and the first and second data lines is turn on.

Description

technical field [0001] The invention relates to a panel testing method for a liquid crystal display with a three-gate pixel structure, in particular to a testing method for a liquid crystal display panel with a three-gate pixel structure and the liquid crystal display panel. Background technique [0002] The manufacture of liquid crystal display panels includes array (array) process, panel (cell) process and module (module) process. After each process is completed, testing will be carried out to eliminate unqualified products. [0003] Please refer to figure 1 , which shows a schematic plan view of a liquid crystal display panel 10 in the prior art. The test pad 60 for panel detection is disposed in the non-display area of ​​the liquid crystal display panel 10 . When the panel detection uses the shorting bar (shorting bar) detection, the odd number of gate lines G odd and an even number of gate lines G even (that is, the scan line) signal is separated, and the red data l...

AI Technical Summary

Problems solved by technology

However, the above-mentioned panel testing method and the waveform editing sequence of the short-circuit bar cannot be applied to a thin-film transistor liquid crystal display with a tri-gate pixel structure because the red data line D is used in a single-gate pixel structure. R , green data line D G and blue data line D B Control the red / green / blue sub-pixels R / G / B, but the three-gate pixel structure is changed to use the red gate line G R , green gate line G G and blue gate line G B Drive red / green / blue sub-pixel R / G / B

If the shorting bar test is also used for the three-gate pixel structure panel test, the shorting bar waveform editing sequence for the single-gate pixel structure cannot be used to light up the red / green / blue sub-pixels R / G / B

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