LCD device high dynamic contrast processing equipment and method

一种液晶显示装置、处理方法的技术，应用在静态指示器、阴极射线管指示器、仪器等方向，能够解决功耗高、画面闪烁等问题，达到功耗降低、提高主要参数、提高动态对比度的效果

Active Publication Date: 2008-10-29
K TRONICS (SUZHOU) TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high dynamic contrast processing device and processing method of a liquid crystal display device based on backlight control, which can greatly improve the dynamic contrast and picture quality of the picture under the premise of keeping the brightness of the liquid crystal panel unchanged, and effectively solve the current problem. There are technical defects such as high power consumption and screen flickering

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  • LCD device high dynamic contrast processing equipment and method
  • LCD device high dynamic contrast processing equipment and method
  • LCD device high dynamic contrast processing equipment and method

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Embodiment Construction

[0057] figure 1 It is a schematic structural diagram of a high dynamic contrast processing device for a liquid crystal display device of the present invention. The high dynamic contrast processing device of the liquid crystal display device includes a receiver, an inverter, and a source driver integrated circuit respectively connected to the central processing module. Statistical processing, according to the statistical processing results to obtain the backlight brightness control parameters and gamma reference voltage parameters of the same frame, generate pulse width modulation dimming control signals and gamma reference voltage, inverter and source driver integrated circuit as the actuator, The inverter is used to receive the PWM dimming control signal from the central processing module and drive the backlight to control the brightness of the backlight. The source driver integrated circuit is used to receive the gamma reference voltage from the central processing module and...

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Abstract

The invention relates to a high-dynamic contrast processing device and a processing method used for an LCD. The processing device comprises a receiver which is connected with a central processing module, an inverter and a source actuation integrated-circuit. The processing method includes the following steps: a histogram statistical processing is carried out for received low-voltage difference signal data; back light source brightness control parameters and gamma referential voltage parameters of the same frame video are obtained according to the statistical processing result; the brightness of the back light source is controlled according to the back light source brightness control parameters; the voltage of pixel capacitance on a liquid crystal panel is controlled according to the gamma referential voltage parameters. The invention simultaneously and respectively regulates the brightness of the back light source and the gamma referential voltage parameters of the liquid crystal panel, thus enhancing the dynamic contrast of frames, improving the problems that the LCD contrast is low and flashes, etc. and saving the power consumption of back light source.

Description

technical field [0001] The invention relates to a digital image processing device and a processing method of a liquid crystal display device, in particular to a processing device and a processing method for high dynamic contrast of a liquid crystal display device. Background technique [0002] With the continuous maturity of technology and the continuous reduction of cost, thin film transistor (TFT) liquid crystal display and TFT liquid crystal TV have gradually replaced the traditional CRT in the dominant position in the display field. Compared with CRT displays, TFT liquid crystal display devices have many advantages such as low radiation, low power consumption, and small size. However, low brightness and contrast is a defect of the TFT liquid crystal display device, especially when displaying a dark state image, the layering effect is reduced due to the existence of a gamma (Gamma) curve. [0003] To solve this problem, a dynamic gamma control (Dynamic Gamma Control, DGC...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G5/10
CPCG09G2320/0247G09G2360/16G09G2360/18G09G2330/021G09G3/3611G09G2320/064G09G2320/0673G09G3/3406G09G2320/0646G09G3/36G09G5/04G09G5/06G09G5/10
Inventor 陈明殷新社
Owner K TRONICS (SUZHOU) TECH CO LTD
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