A display driving circuit and a liquid crystal display panel
A liquid crystal display panel and display driving technology, applied in static indicators, instruments, nonlinear optics, etc., can solve the problems of too many gray scales, inability to compensate voltage coupling amount, and inability to achieve mass production, etc., to improve display quality Effect
Active Publication Date: 2019-08-02
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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As can be seen from the above formula, increasing C st It is obvious that the voltage coupling amount ΔV can be reduced, C st The larger the voltage coupling amount ΔV is, the smaller it is, but C st It is usually limited by conditions such as aperture ratio and cannot be made too large
In addition, common electrode voltage compensation is a common way to compensate voltage coupling, but this compensation mechanism cannot accurately compensate the voltage coupling amount of each gray scale. If the data line voltage compensation method is used to compensate the voltage coupling amount of each gray scale The amount of voltage coupling will not be able to achieve mass production due to the large number of gray levels
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[0029] In order for those skilled in the art to better understand the technical solution of the present invention, a display driving circuit and a liquid crystal display panel provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. In the drawings, the same reference numerals are used to denote the same structures and regions throughout the specification and drawings.
[0030] Voltage coupling refers to the close cooperation and mutual influence between the input and output of two or more circuit components or electrical networks, and the transmission of energy from one side to the other through interaction. In a liquid crystal display panel, what really determines the deflection of the liquid crystal molecules is the voltage difference V applied to the liquid crystal capacitor. lc , while V lc is the pixel voltage V pixel with common electrode voltage V com The difference can be exp...
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The invention discloses a display driving circuit and a liquid crystal display panel; the display driving circuit comprises a plurality of scanning lines and a plurality of compensating lines arranged among the scanning lines, wherein each compensating line and at least one scanning line form a scanning compensating line set; each scanning compensating line set is provided with a plurality of capacitive lines insulated to the scanning lines and the compensating lines; one end of each capacitive line is connected to one pixel electrode on one scanning line in the scanning compensating lines and is extended to an electric field area of the compensating line to form a capacitive structure with the corresponding compensating line; the compensating lines input drive pulses according preset rules and compensate voltage coupling lost from the scanning lines between the corresponding compensating lines. Through the display driving circuit of the invention, it is possible to compensate the pixel voltage on pixel electrodes on the scanning lines, and display quality is improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a display driving circuit and a liquid crystal display panel. Background technique [0002] Liquid Crystal Display (LCD) is a flat and ultra-thin display device, which consists of a certain number of color or black and white pixels, and is placed in front of a light source or a reflective surface. Liquid crystal displays have low power consumption, high image quality, small size, and light weight, so they are favored by everyone and become the mainstream of displays. At present, the liquid crystal display is mainly a thin film transistor (Thin Film Transistor, TFT) liquid crystal display, and the liquid crystal panel is a main component of the liquid crystal display. A liquid crystal panel generally includes a color filter substrate and a TFT array substrate disposed opposite to each other, and a liquid crystal layer sandwiched between the two substrates. With the development ...
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IPC IPC(8): G02F1/1362G09G3/36
CPCG02F1/136286G09G3/36
Inventor 陈帅
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD