Shift register, driver circuit and display device

A shift register, start-up voltage technology, applied in static memory, digital memory information, instruments, etc., can solve the problem that the shift register cannot be reached

Active Publication Date: 2012-08-29
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the existing shift register cannot provide the low voltage of GATE (gate) and RESET (reset) at the same time, and the purpose of providing high voltage of EMISSION

Method used

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  • Shift register, driver circuit and display device
  • Shift register, driver circuit and display device
  • Shift register, driver circuit and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0051] Such as image 3 Shown is a schematic diagram of the specific circuit structure of the present invention.

[0052] In this embodiment, the starting voltage signals are provided by CLK1, CLK2, and CLK3, and the starting voltage source 34 and the reverse voltage source 35 respectively provide a voltage in the same direction as the starting voltage and a voltage opposite to the starting voltage. Among them, CLK1, a voltage shift module startup voltage with a length of one-third cycle occurs every one-third cycle; CLK2, a voltage shift module start voltage with a length of one-third cycle occurs every one-third cycle voltage, and the startup voltage lags one-third of the cycle of the startup voltage of the first clock signal; CLK3, a voltage shift module startup voltage with a length of one-third of a cycle appears every one-third of the cycle, and the startup voltage lags behind The start-up voltage of the second clock signal CLK2 is one-third of the cycle.

[0053] The ...

Embodiment 3

[0100] The switch unit and the control unit in the present invention may be any one or a combination of field effect transistors, triodes and thin film transistors. In this embodiment, N-channel thin film transistors are used as the components of the switch unit and the control unit, and the circuit structure is as follows image 3 and Figure 4 shown.

[0101] In this embodiment, three clock signals, a high-voltage power supply and a low-voltage power supply, control the on and off of elements in the shift register. Since this embodiment uses an N-channel thin film transistor, the starting voltage source of this embodiment is a high voltage, and the reverse voltage source is a low voltage. In this embodiment, the three clock signals include: CLK1, a voltage shift module startup voltage with a length of one third of a cycle appears every third cycle; CLK2, a length of three minutes appears every third cycle One-period voltage shift module startup voltage, and the startup vo...

Embodiment 4

[0126] The switch unit and the control unit in the present invention may be any one or a combination of field effect transistors, triodes and thin film transistors. In this embodiment, P-channel thin film transistors are used as the components of the switch unit and the control unit, and the circuit structure is as follows image 3 and Figure 6 shown.

[0127] In this embodiment, three clock signals, a high-voltage power supply and a low-voltage power supply, control the on and off of elements in the shift register. Since this embodiment uses a P-channel thin film transistor, the starting voltage source of this embodiment is a low voltage, and the reverse voltage source is a high voltage. Wherein, in this embodiment, the three clock signals include: CLK1, a voltage shift module startup voltage with a length of one third of a cycle appears every third cycle; CLK2, a length of 1 / 3 cycle appears every one third of the cycle. The start-up voltage of the voltage shift module of...

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PUM

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Abstract

The invention provides a shift register, which delays and outputs a starting voltage received by the shift register and simultaneously outputs a reverse voltage of the delayed starting voltage. The shift register comprises a voltage shift module, a voltage reversing module, a supplement voltage module and a voltage shift control module, wherein the voltage shift module outputs the voltage with the same direction as the starting voltage from a second output port under the control of second starting voltage signals, and the voltage reversing module outputs the voltage reverse to the starting voltage from a first output port under the control of the voltage output by the voltage shift module, and outputs the voltage with the same direction as the starting voltage from the first output port under the control of first starting voltage signals or third starting voltage signals; and the supplement voltage module outputs the voltage reverse to the starting voltage from the second output port under the control of the voltage output by the voltage reversing module, and the voltage shift control module controls the cut-off of the voltage shift module under the control of the voltage output by the voltage reversing module. The invention also provides a display device using the shift register and a corresponding method.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register, a driving circuit and a display device. Background technique [0002] The output characteristics of the traditional shift register are related to the polarity of the TFTs that make up the shift register, that is, the output of the working range of the N-type TFT shift register is a high voltage Vgh; while the output of the working range of the P-type TFT shift register is a low voltage Vgl . The existing shift register cannot provide low voltage and high voltage at the same time. [0003] In the circuit of the pixel structure of AMOLED (Actvie Matrix / Organic Light Emitting Diode, active matrix organic light emitting diode panel) with compensation function, in addition to needing the starting voltage as the starting voltage, the voltage opposite to the starting voltage is also required as the starting voltage. Starting voltage. Such as figure 1 The P-type TF...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11C19/28G09G3/32
CPCG09G3/3266G09G2310/0254G09G2310/0286G11C19/28G09G3/20
Inventor 马占洁
Owner BOE TECH GRP CO LTD
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