Pixel drive circuit, array substrate and liquid crystal panel
A pixel driving circuit and array substrate technology, which is applied in the field of array substrates, liquid crystal panels, and pixel driving circuits, can solve problems such as inability to realize color shift compensation, and achieve the effect of improving display quality
Active Publication Date: 2016-01-27
SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD
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[0008] However, when scanning in the reverse direction, that is, when the gate scanning signal is provided row by row from top to bottom, the voltage of the pixel electrode 501 in the main area and the pixel electrode 502 in the sub area in the pixel unit 500 in the nth row and the mth column remain the same after being charged, and the color cannot be realized. partial compensation
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[0030] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0031] see image 3 , the present invention firstly provides a pixel driving circuit, including a plurality of pixel units 5 arranged in an array, and an nth gate scanning line G extending in the horizontal direction arranged corresponding to the nth row of pixel units 5 from top to bottom. (n), and the mth data line D(m) extending along the vertical direction corresponding to the mth column of pixel units 5 from left to right, where both n and m are positive integers.
[0032] Each pixel unit 5 includes a first thin film transistor T1, a second thin film transistor T2, a third thin film transistor T3, a fourth thin film transistor T4, a main area pixel electrode 51, a sub area pixel electrode 52, a first charge sharing capacitor C1, and the ...
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The invention provides a pixel drive circuit, an array substrate and a liquid crystal panel. According to the pixel drive circuit, the gate electrodes of the third thin film transistors (T3) of the nth row of pixel units (5) are electrically connected with the (n-1)th gate electrode scanning line (G(n-1)) corresponding to the last row of pixel units (5), the source electrodes are electrically connected with sub-region pixel electrodes (52), and the drain electrodes are electrically connected with one end of first charge sharing capacitors (C1). The other end of the first charge sharing capacitors (C1) is accessed to common voltage. The gate electrodes of the fourth thin film transistors (T4) are electrically connected with the (n+1) gate electrode scanning line (G(n+1)) corresponding to the next row of pixel units (5), the source electrodes are electrically connected with main region pixel electrodes (51), and the drain electrodes are electrically connected with one end of second charge sharing capacitors (C2). The other end of the second charge sharing capacitors (C2) is accessed to common voltage. Color cast compensation can be performed in forward scanning driving and reverse scanning driving, and display quality of the liquid crystal panel can be enhanced.
Description
technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a pixel driving circuit, an array substrate and a liquid crystal panel. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) is one of the most widely used flat panel displays at present, and a liquid crystal panel is a core component of the liquid crystal display. A liquid crystal panel is usually composed of a color filter substrate (ColorFilter, CF), a thin film transistor array substrate (ThinFilmTransistorArraySubstrate, TFTArraySubstrate), and a liquid crystal layer (LiquidCrystalLayer) disposed between the two substrates. Generally, pixel electrodes and common electrodes are respectively arranged on the array substrate and the color filter substrate. When a voltage is applied to the pixel electrode and the common electrode, an electric field will be generated in the liquid crystal layer, which determines the orientation of th...
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IPC IPC(8): G09G3/36
Inventor 徐向阳
Owner SHENZHEN CHINA STAR OPTOELECTRONICS TECH CO LTD