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Driver circuit for display device

A technology for driving circuits and display devices, applied in static indicators, instruments, etc., can solve problems such as increasing the power consumption of scanning circuits

Inactive Publication Date: 2008-02-20
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, it can also be known from FIG. 2 that the output enable signal OE must be used in the prior art to prevent adjacent scan signals from overlapping, and the output enable signal OE will additionally increase the power consumption of the scan circuit.

Method used

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  • Driver circuit for display device
  • Driver circuit for display device
  • Driver circuit for display device

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Experimental program
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Embodiment Construction

[0024] 3 is a circuit diagram of the first three scanning stages (trigger signal generating stages) 300-1, 300-2 and 300-3 of the driving circuit of the display device according to a preferred embodiment of the present invention. Taking a panel with a resolution of 640*480 as an example, if the driving circuit is used to drive the gate, it will include 640 scanning stages. In the following description, the scanning circuit in this embodiment as the gate driving circuit will be taken as an example for illustration. Those skilled in the art will know that this embodiment can also be used as a shift register stage of the source driving circuit. In addition, this embodiment can also be applied to a reflective liquid crystal on silicon (LCoS) type display device in addition to a thin film transistor-liquid crystal display (TFT-LCD) type display device.

[0025]The first scan stage 300-1 includes a first shift register 300-1A and a first logic gate 300-1B. The first shift register...

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PUM

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Abstract

The utility model discloses a driving circuit of display device, comprising first-Nth trigger signal generation class (N is an integer more than zero), wherein the trigger signal generation class i (i is an integer between 1-N) comprises an ith replacement register and an ith logical gate, the ith displacement register performs tri-state reverse phase to the input signal of the ith trigger generation class, so that the ith tri-state reverse-phase signal is obtained, moreover the ith tri-state reverse-phase signal further becomes the input signal of the (i+1)th trigger generation class by the tri-state reverse-phase, the ith logic gate generates the ith logic signal according to the ith tri-state reverse-phase signal and the input signal of the (i+1)th trigger signal generation class, the (i+1)th trigger signal generation class generates the (i+1) trigger signal according to the ith logic signal.

Description

technical field [0001] The present invention relates to a driving circuit of a display device, and in particular to a driving circuit of a display device which does not need an external output enable signal to save energy consumption. Background technique [0002] Currently, the driving circuit of the display device includes a gate driver and a source driver. Both the gate driving circuit and the source driving circuit include a trigger signal generating circuit. In the gate driving circuit, the trigger signal generation circuit, such as a scanning circuit, is used to generate gate on / off signals to control the on / off of pixels. In the source driving circuit, the trigger signal generation circuit can be used as a shift register stage to generate a plurality of trigger signals to trigger data latches. [0003] The existing scanning circuit uses the signal generated by the shift register (Shift Register) and the output enable signal (Output Enable, OE) to perform AND logic (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20
Inventor 蔡政宏黄俊尧陈和成
Owner CHUNGHWA PICTURE TUBES LTD