Display drive method of liquid crystal display of thin film transistor

A liquid crystal display and thin film transistor technology, which is applied in the field of display drive, to achieve the effect of easy implementation, gray level improvement, and display drive gray level improvement

Inactive Publication Date: 2009-08-26
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to achieve full-color drive with higher gray levels, a higher-precision DAC is necessary, which will inevitably bring a series of difficulties and challenges to chip design and chip manufacturing processes.

Method used

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  • Display drive method of liquid crystal display of thin film transistor
  • Display drive method of liquid crystal display of thin film transistor
  • Display drive method of liquid crystal display of thin film transistor

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Embodiment Construction

[0034]A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings: In this thin film transistor liquid crystal display display driving method, in order to improve the display gray scale, the gray scale data scanning drive modulation adopts a combination of time domain modulation and spatial plane domain modulation. The rule of combining the time domain modulation and the space plane domain modulation adopts the space-time mixing rule: the data modulation of the space plane domain adopts the DAC gray scale drive of the traditional low gray level TFT-LCD column driver chip Complete the modulation drive of the low-order data of the gray-scale data; the time-domain modulation is carried out by using the frame ratio control bit weight gray-scale scanning method to complete the modulation and drive of the high-order data of the gray-scale data, and the combination of the two realizes the gray-scale modulation drive. ...

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Abstract

The invention relates to a display drive method of a liquid crystal display of a thin film transistor. In order to improve display gray scale, the scan drive modulation of gray scale data is realized by the rule which combines time domain modulation with space plane domain modulation, and the rule uses space time mixing rule: the data modulation of the space domain completes the modulation drive of low data of the gray scale data by the DAC gray scale drive of low gray scale TFT-LCD series driving chip; the time domain modulation completes the modulation drive of high data of the gray scale data by the frame rate control bit weight gray scale scan method; and the space domain modulation and the time domain modulation are combined to realize gray scale modulation drive. The invention can easily improve the display drive gray scale of the liquid crystal display of the thin film transistor in the prior art.

Description

technical field [0001] The present invention relates to a display driving method, more particularly, to a thin film transistor liquid crystal display (TFT-LCD) display driving method. Background technique [0002] The overall driving method of traditional TFT-LCD is as attached figure 2 As shown, including U1 timing signal controller (T-CON), U2 data drive circuit (Source IC), U3 gate drive circuit (Gate IC), U5 common electrode circuit (Vcom), U4 DC conversion circuit, U6 gray scale Voltage generation circuit and UP LCD screen. The data driving circuit completes the DAC conversion output of column data, the gate driving circuit is used for scanning and gating row signals, the common electrode circuit is used for providing common electrode voltage, and the signal control circuit is used for generating control timing logic. [0003] In the traditional TFT-LCD full-screen scanning driving method, the imaging scanning driving principle of TFT-LCD complies with the traditional...

Claims

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Application Information

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IPC IPC(8): G09G3/36
Inventor 唐智杰冉峰徐美华
Owner SHANGHAI UNIV
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