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Design method for drive circuit module in liquid crystal display drive control chip

A driving control and driving circuit technology, applied in static indicators, instruments, etc., can solve the problems of large chip area, occupation, and high static power consumption of the chip, and achieve the effect of reducing the number of

Inactive Publication Date: 2008-05-21
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the prior art that the drive circuit module occupies a large chip area and high static power consumption of the chip, the present invention provides a design method for a drive circuit module of a liquid crystal display drive control chip

Method used

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  • Design method for drive circuit module in liquid crystal display drive control chip
  • Design method for drive circuit module in liquid crystal display drive control chip

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Embodiment Construction

[0014] refer to figure 1 , in the drive circuit module designed by the present invention, 13 drive buffers are added to the gamma correction circuit, and no drive buffer needs to be added to the output end of the source driver, which can be directly connected to the TFT-LCD display. This is due to the small equivalent load capacitance of TFT-LCD displays used in mobile phones.

[0015] The working principle of the driving circuit is as follows. First, through the resistor divider network, the 8-level gray-scale voltage generation circuit generates 8 reference gray-scale voltages, thereby determining the basic shape of the γ correction curve, and adding a so-called primary gray-scale voltage to the output of each reference gray-scale voltage. Buffer's driver Buffer. Then, in order to strengthen the load driving ability, divide the six reference gray voltages in the middle by resistors, take out the middle voltage, and insert a driving buffer called a secondary Buffer at its ...

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Abstract

The invention discloses a driving circuit module designing method of liquid crystal display driving control chip. It adds 13 driving buffers in gamma adjusting circuit and needed not to add any driving buffer on the output end of the source driver.

Description

technical field [0001] The invention relates to a method for designing a driving circuit module, in particular to a method for designing a driving circuit module for a liquid crystal display driving control chip. Background technique [0002] In the liquid crystal display drive control circuit chip, the function of the drive circuit module is to generate 64-level color grayscale voltage signals, and drive the capacitively loaded TFT-LCD display to display various color images. In order to achieve high-quality, low-power driving and display, the requirement for the driving circuit module is to minimize the occupied chip area and static power consumption under the premise of satisfying the load driving capability. [0003] refer to figure 2 , the document "SAMSUNG S6D0110A Specification, 132 RGB×176 dot 1-chip driverIC with internal GRAM for 262, 144 Colors TFT-LCD, Ver0.7, April 24, 2003" introduced a driver circuit module for LCD driver control chip Design method, firstly,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/133G09G3/36
Inventor 魏廷存高德远樊晓桠张盛兵罗旻王党辉
Owner NORTHWESTERN POLYTECHNICAL UNIV