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Driving device for liquid crystal display and related output enable signal transfer device

A technology for enabling signals and conversion devices, which is applied in the direction of static indicators, instruments, logic circuit connections/interface layout, etc., can solve the problem of narrowing the range of pulse signal retention, the inability to improve the brightness of TFT-LCD screens, and reducing the known grid Polar channel time-sharing interleaved drive method flexibility and other issues

Inactive Publication Date: 2009-09-23
NOVATEK MICROELECTRONICS CORP
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the advancement of semiconductor technology, the number of gate channels that can be controlled by each gate driver will increase, and the number of gate drivers required by thin film transistor liquid crystal displays will decrease. The number of output enabling signals of the gate driver is also reduced, thereby reducing the flexibility of the known gate channel time-division interleaved driving method
As a result, the range that can be set for the pulse signal retention rate is reduced, and the screen brightness of the TFT-LCD cannot be improved.

Method used

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  • Driving device for liquid crystal display and related output enable signal transfer device
  • Driving device for liquid crystal display and related output enable signal transfer device
  • Driving device for liquid crystal display and related output enable signal transfer device

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Embodiment Construction

[0060] The present invention utilizes the concept of a shift register to generate a plurality of output enable signals to control gate channels in groups. Please refer to Figure 7 , Figure 7 It is a functional block diagram of a gate driver 70 according to an embodiment of the present invention. The gate driver 70 includes a first level shifter 702, a shift register module 704, a logic circuit 706, a second level shifter 708, a buffer 710, a third level shifter 712 and a The output enables signal conversion device 700 . The first level shifter 702 is coupled between the output enable signal conversion device 700, the shift register module 704 and a timing generator 72, and is used for converting a vertical synchronous signal STV output by the timing generator 72, a Levels of the vertical clock signal CPV, the enable synchronization signal OETKNI, the enable clock signal CLKTKN, and the enable control signals OED and OEB. The shift register module 704 is coupled between t...

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Abstract

The invention provides a driving device for a liquid crystal display and a related output enable signal transfer device. The driving device comprises a receiving terminal, a shift register module, a multiplex module and an output terminal. The output enable signal transfer device generates a plurality of output enable signals through the shift register module and the multiplex module, and correspondingly controls a plurality of grid channel groups of a grid driver to improve the setting flexibility of a black frame insertion signal and further improve the screen frame brightness of the liquid crystal display.

Description

technical field [0001] The present invention relates to a driving device for a liquid crystal display and its related output enabling signal converting device, in particular to a driving device and its related output enabling signal converting device capable of improving the screen brightness of the liquid crystal display. Background technique [0002] Liquid crystal displays have the characteristics of light and thin appearance, low power consumption, and no radiation pollution. They have been widely used in information products such as computer systems, mobile phones, and personal digital assistants. The working principle of the liquid crystal display is to use the liquid crystal molecules in different alignment states to have different polarization or refraction effects on light, so the penetration of light can be controlled through liquid crystal molecules in different alignment states, and output light of different intensities can be further generated. And red, green, b...

Claims

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Application Information

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IPC IPC(8): G09G3/36H03K19/0175
Inventor 胡毓宗龚敬文
Owner NOVATEK MICROELECTRONICS CORP
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