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Driver circuit for display device

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

Inactive Publication Date: 2009-07-15
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, by figure 2 It can also be known that, because the prior art must use the output enable signal OE to prevent adjacent scan signals from overlapping, 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

Examples

Experimental program
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Embodiment Construction

[0024] image 3 It 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 shi...

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PUM

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Abstract

The invention discloses a driving circuit of a display device, which includes first to Nth trigger signal generating stages (N is an integer greater than 0), wherein the ith trigger signal generating stage (i is an integer ranging from 2 to N) includes the first The i-th shift register and the i-th logic gate, the i-th shift register performs tri-state inversion on the input signal of the i-th trigger signal generation stage to obtain the i-th tri-state inversion signal, and regenerates the i-th tri-state inversion signal The input signal of the i+1th trigger signal generation stage is generated by tri-state inversion, and the i-th logic gate generates the i-th logic signal according to the i-th tri-state inversion signal and the input signal of the i+1th trigger signal generation stage. The i-1 trigger signal generating stage generates the i-1 trigger signal according to the i 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 Patents(China)
IPC IPC(8): G09G3/20
Inventor 蔡政宏黄俊尧陈和成
Owner CHUNGHWA PICTURE TUBES LTD