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Method and device for controlling signal-processing of the backlight module of the display device

A technology for controlling displays and backlight modules, applied to static indicators, instruments, etc.

Inactive Publication Date: 2012-12-05
COMPAL ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the light source provided by the backlight module can be directly observed by the user, how to achieve the purpose of reducing the power consumption of the backlight module without affecting the viewing of the user is a major challenge for those in the related technical field.

Method used

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  • Method and device for controlling signal-processing of the backlight module of the display device
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  • Method and device for controlling signal-processing of the backlight module of the display device

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Embodiment Construction

[0031] Please refer to figure 1 . figure 1 In an embodiment of the present disclosure, a block diagram of a display 1 is provided. The display 1 includes a pixel array 10 , a source driver 12 , a gate driver 14 , a timing control module 16 and a backlight module 18 . Wherein, the source driver 12 and the gate driver 14 are used to connect the pixel units (not shown) in the pixel array 10, and when the gate driver 14 turns on a row of pixel units, the source driver 12 transmits the data to be displayed to pixel units for display. The timing control module 16 is used to control the time when the source driver 12 and the gate driver 14 turn on the pixel unit and transmit data. The backlight module 18 is used to provide a light source so that the user can watch the content displayed by the pixel array 10 through the light source.

[0032] Please also refer to figure 2 . figure 2 In an embodiment of the present disclosure, a block diagram of a circuit device 2 for controlli...

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Abstract

A power-saving technology of a display device is provided, in which a device and a method are proposed to control the signal processing of the backlight module such that it is synchronized with the backlight and a frame output signal. The device comprises a signal generation module for generating a vertical synchronization (VSYNC) signal having a first and a second state in each time period and a first pulse width modulation (PWM) signal and a modulation control module for receiving the VSYNC and the first PWM signals. The modulation control module transmits the first PWM signal to the backlight module when the VSYNC signal is in the first state such that the backlight module operates accordingly. The modulation control module transmits a second PWM signal to the backlight module when the VSYNC signal is in the second state such that the backlight module turns off.

Description

technical field [0001] The invention relates to a display power saving technology, and in particular to a control method for controlling the signal processing of the display backlight module and synchronizing the backlight with the picture output signal. Background technique [0002] With the diversity and development of electronic devices, display technology becomes more and more important. In a common display device such as a thin film transistor liquid crystal display device, a backlight module is a very important component. Since the thin film transistor liquid crystal display device is a non-self-luminous display, the light must be projected through the light source of the backlight module, and then penetrate the polarizer, glass substrate, liquid crystal layer, color filter, glass substrate, polarizer, etc. in the panel. Relevant components are finally entered into the human eye for imaging to achieve the display function. [0003] However, the backlight module also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/34
CPCG09G3/34G09G2330/021G09G3/3406
Inventor 张振兴
Owner COMPAL ELECTRONICS INC
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