LCD device

A technology of liquid crystal display device and liquid crystal panel, which is applied to static indicators, cathode ray tube indicators, instruments, etc., can solve problems such as screen flickering phenomenon, and achieve the effect of eliminating screen flickering

Inactive Publication Date: 2009-12-30
INNOCOM TECH (SHENZHEN) CO LTD +1
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  • Abstract
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Problems solved by technology

[0007] In order to solve the problem of screen flicker in the prior art liquid crystal display device, it is necessary to provide a liquid crystal display device that can effectively eliminate the screen flicker phenomenon.

Method used

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Embodiment Construction

[0016] see image 3 , which is a schematic circuit block diagram of a preferred embodiment of the liquid crystal display device of the present invention. The liquid crystal display device 20 includes a voltage generating circuit 22 , a voltage adjusting circuit 23 , a data driving circuit 24 and a liquid crystal panel 26 . The voltage generating circuit 22 is connected to an analog voltage source (AVDD), and outputs a plurality of positive polarity gray scale voltages, and the multiple positive polarity gray scale voltages pass through an inverter (not shown in the figure) to obtain a plurality of corresponding negative polarity Gray scale voltage. The plurality of positive grayscale voltages and negative grayscale voltages are sent to the data driving circuit 24, and the data driving circuit 24 outputs the plurality of positive grayscale voltages and negative grayscale voltages to the LCD panel 26. The voltage adjusting circuit 23 is connected to the voltage generating cir...

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Abstract

The invention provides an LCD device, which comprises a voltage generating circuit, a voltage regulating circuit and a liquid crystal panel, wherein the voltage generating circuit provides positive polarity gray scale voltage and negative polarity gray scale voltage for the liquid crystal panel; the voltage regulating circuit is generated according to standard luminance of each gray scale, positive polarity gray scale voltage and negative polarity gray scale voltage corresponding to each gray scale and stores a gray scale / compensation voltage lookup table, and the gray scale / compensation voltage lookup table comprises a compensation voltage value corresponding to positive polarity gray scale voltage or negative polarity gray scale voltage in each gray scale; and the voltage regulating circuit respectively regulates the positive polarity gray scale voltage or negative polarity gray scale voltage according to the gray scale / compensation voltage lookup table. The LCD device can eliminate the phenomenon of frame flicker.

Description

technical field [0001] The invention relates to a liquid crystal display device. Background technique [0002] Currently, liquid crystal display devices are widely used in desktop computers, personal digital assistants (PDAs), mobile phones, televisions, and various office automation and audio-visual equipment. The principle of the liquid crystal display device is to apply an electric field at both ends of the liquid crystal layer to deflect the liquid crystal molecules, and then cooperate with the polarizer to control the intensity of the transmitted light to realize the screen display. In order to prevent the liquid crystal molecules from being polarized under the electric field in the same direction for a long time and affect the response speed and deflection angle of the liquid crystal molecules, the driving method of applying positive and negative alternating electric fields to the liquid crystal layer is generally adopted, that is, the inversion driving method. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G5/06G02F1/133
CPCG09G2320/0247G09G2360/145G09G2320/0204G09G2320/029G09G2320/0257G09G3/3696
Inventor 郭威黄顺明
Owner INNOCOM TECH (SHENZHEN) CO LTD
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