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Drive circuit of picture element array for display panel

A display panel and drive circuit technology, applied to static indicators, TVs, instruments, etc., can solve problems such as shift signal overlap

Active Publication Date: 2009-08-12
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a driving circuit, which can effectively solve the problem of shift signal overlap with only a simple circuit

Method used

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  • Drive circuit of picture element array for display panel
  • Drive circuit of picture element array for display panel
  • Drive circuit of picture element array for display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Please refer to figure 1 , which represents a circuit diagram of a driving circuit according to a first embodiment of the present invention. The driving circuit 100 is used for driving a pixel array 102 of a display panel. The driving circuit 100 at least includes a shift register circuit 104 , an output buffer circuit 106 and a plurality of switch groups 112 . The shift register circuit 104 includes a plurality of shift register units, such as shift register units 108(N−1), 108(N) and 108(N+1). The output buffer circuit 106 includes a plurality of output buffer units, such as main inverters, including main inverters 110(N−1), 110(N) and 110(N+1).

[0022] The shift register units 108(N-1), 108(N) and 108(N) respectively output shift signals SR(N-1), SR(N) and SR(N+1), and the shift signal SR(N -1), SR(N) and SR(N+1) are enabled sequentially. When the shift signals SR(N-1), SR(N) and SR(N+1) are enabled respectively, the levels of the shift signals SR(N-1), SR(N) an...

Embodiment 2

[0029] Please refer to image 3, which represents a circuit diagram of a driving circuit according to a second embodiment of the present invention. Different from the first embodiment, in the driving circuit 300 of the second embodiment of the present invention, the output buffer circuit 306 further includes a plurality of auxiliary inverters 310 (N-1), a plurality of auxiliary inverters 310 ( N) and a plurality of auxiliary inverters 310 (N+1), such as two auxiliary inverters 310 (N-1), two auxiliary inverters 310 (N) and two auxiliary inverters 310 ( N+1). The two auxiliary inverters 310(N-1) are connected in series with the main inverter 110'(N-1), and the two auxiliary inverters 310(N) are connected in series with the main inverter 110'(N). connected, and the two auxiliary inverters 310(N+1) are connected in series with the main inverter 110'(N-1). The positive voltage supply terminals of all auxiliary inverters can receive the shift signal of the upper stage, or be dir...

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Abstract

A driving circuit includes a shift register circuit and an output buffer circuit. The shift register circuit includes first and second shift register units. The first and second shift register units respectively output first and second shift signals, and the first and second shift signals are enabled sequentially. The output buffer circuit includes first and second output buffer units. The first and second output buffer units respectively receive the first and second shift signals to output a first switch control signal and a second switch control signal. The voltage supply end of the second output buffer unit receives the first shift signal. When the voltage of the first shift signal turns inactive, the second output buffer unit is enabled, so that the second output buffer unit outputs the second switch control signal, so that a data signal is input into the pixel array.

Description

technical field [0001] The present invention relates to a driving circuit, and more particularly to a driving for driving a pixel array of a display panel. Background technique [0002] A general method for driving a pixel array of a thin film transistor (Thin Film Transistor) liquid crystal display panel (Liquid Crystal Display Panel) or an OLED display panel is briefly described as follows. The driving circuit at least includes a horizontal shift register (Horizontal Shift Register), a plurality of switch groups, and a vertical shift register (Vertical Shift Register). The vertical shift register is used to output a plurality of enable vertical shift signals in sequence, so that each column of pixels is enabled in sequence. The horizontal shift register is used for outputting a plurality of horizontal shift signals for respectively controlling a plurality of switch groups. Multiple horizontal shift signals are enabled sequentially, so that multiple switch groups are sequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/36G09G3/30H04N5/66G02F1/133
Inventor 陈昶佑尤建盛
Owner AU OPTRONICS CORP
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