LCD driver of mobile communication terminal and its method

A mobile communication terminal and drive device technology, which is applied to cathode ray tube indicators, static indicators, instruments, etc., can solve problems such as image quality degradation, inability to store image data, and image display speed reduction, so as to improve image quality, Improve data transmission speed, improve the effect of display speed

Inactive Publication Date: 2008-12-17
INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, while the LCD panel displays 1 frame of video data, the video data cannot be stored in the Graphic RAM (GRAM), resulting in a decrease in image quality due to a decrease in the video display speed.

Method used

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  • LCD driver of mobile communication terminal and its method
  • LCD driver of mobile communication terminal and its method
  • LCD driver of mobile communication terminal and its method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0038] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0039] Figure 4 It is a structural diagram of an LCD driving device according to an embodiment of the present invention. As shown, with figure 1 The middle circuit is the same, and it includes: a source driver 410, a gate driver 420, a controller 440, a clock generator 450, an oscillator 460, and two image RAMs 431 and 432 that alternately store one frame of image data transmitted by the host memory 470.

[0040] When the VRAM 431 and 432 output image data from one end of the VRAM to the LCD panel, the host memory 470 receives and stores the image data.

[0041] As mentioned above, the operation and effects of the embodiment of the present invention are as follows.

[0042] In the embodiment of the present invention, it is assumed that the image data is preferentially stored in the VRAM 431 when the LCD panel displays an image, and the detailed de...

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PUM

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Abstract

The invention relates to an LCD driving device for a mobile communication terminal, comprising: first and second image random access memories that alternately store and output 1 frame of image data transmitted by a host memory, and the first image random access memory outputs the stored image data at the same time , the second image random access memory stores the image data; in each horizontal cycle, receive 1 row of image data from the first or second image random access memory that has stored 1 frame of image data in the image random access memory, and transmit it to the source of the LCD panel The source driver of the line; the gate driver, under the control of the control section, simultaneously with the first or the second image RAM, outputs a horizontal line image corresponding to the output of the first or second image RAM at each horizontal cycle The scan pulses of the horizontal line addresses of the data are sequentially selected from the horizontal lines on the upper side of the LCD panel for displaying the image data of the first or second image random access memory.

Description

technical field [0001] The invention relates to an LCD display device, in particular to a mobile communication terminal LCD driving device and a method thereof. Background technique [0002] With the rapid development of the information society, the scope of application of display devices has gradually expanded. [0003] In particular, LCDs (Liquid Crystal Displays) are widely used in display devices of mobile communication terminals due to their advantages of high image quality, thinness, and low power consumption. [0004] At present, mobile communication terminals (hereinafter referred to as "mobile phones") that support color LCD panels (LCD panels) have been launched. [0005] Such as figure 1 As shown, the LCD driver of a traditional mobile phone includes a graphic random access memory (Graphic RAM: GRAM) 130 that stores image data transmitted by the host memory 170; input a row of image data in the above-mentioned graphic random access memory 130, and transmit it to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G02F1/133G09G5/00
CPCG09G3/3674G09G2310/0202G09G2320/0252G09G2360/127
Inventor 安晋佑
Owner INSPUR LG DIGITAL MOBILE COMMUNICATIONS CO LTD
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