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Control circuit of gate driving circuit, working method and display device

A gate drive circuit and control circuit technology, applied in electrical components, static indicators, generating electrical pulses, etc., can solve the problems of high power consumption of gate drive circuits and shortened life of thin film transistors, etc.

Inactive Publication Date: 2014-09-10
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, since the driving voltage VGH is a large and fixed voltage value, the power consumption of the gate driving circuit is relatively high during operation, and at the same time, since the thin film transistor is subjected to a large voltage impact every time it is turned on, resulting in a decrease in the lifetime of thin film transistors

Method used

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  • Control circuit of gate driving circuit, working method and display device
  • Control circuit of gate driving circuit, working method and display device
  • Control circuit of gate driving circuit, working method and display device

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Experimental program
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Effect test

Embodiment 1

[0045] figure 2 A schematic structural diagram of the control circuit of the gate drive circuit provided in Embodiment 1 of the present invention, as shown in figure 2 As shown, the control circuit includes: a power supply 1, a detection circuit 2, and a charge pump circuit 3, wherein the detection circuit 2 generates a corresponding digital control signal according to the ambient temperature of the gate drive circuit 4, and the power supply 1 is used to provide the charge pump circuit 3 with The initial voltage, the charge pump circuit 3 is used to adjust the initial voltage according to the digital control signal to generate a driving voltage, and output the driving voltage to the gate driving circuit 4 .

[0046]The technical solution in the present invention senses the current ambient temperature of the gate drive circuit 4 through the detection circuit 2, and generates a digital control signal corresponding to the ambient temperature according to the current ambient tem...

Embodiment 2

[0069] Embodiment 2 of the present invention provides a display device. The display device includes: a control circuit of a gate drive circuit. The control circuit of the gate drive circuit adopts the control circuit of the gate drive circuit provided in Embodiment 1 above. Specifically, Refer to the description in the first embodiment above, and details are not repeated here.

[0070] Embodiment 2 of the present invention provides a display device. The display device includes: a control circuit of a gate drive circuit, and the control circuit of the gate drive circuit includes: a detection circuit, a power supply, and a charge pump circuit. The technical solution of the present invention adopts The detection circuit generates a corresponding digital control signal according to the ambient temperature of the gate drive circuit, and the charge pump circuit adjusts the initial voltage according to the digital control signal to generate the driving voltage VGH required to normally...

Embodiment 3

[0072] Figure 5 A flow chart of the working method of the control circuit of the gate drive circuit provided in Embodiment 3 of the present invention, as shown in Figure 5As shown, wherein, the gate drive circuit includes: a detection circuit, a power supply, and a charge pump circuit, and the working method includes:

[0073] Step 101: The detection circuit generates a digital control signal corresponding to the ambient temperature according to the ambient temperature of the gate drive circuit.

[0074] Optionally, the detection circuit includes: a temperature detection module, a current-voltage conversion module, an analog-to-digital conversion module and a register, and step 101 includes:

[0075] Step 1011: The temperature detection module generates an analog output current corresponding to the ambient temperature according to the ambient temperature of the gate drive circuit.

[0076] Wherein, the temperature detection module includes: a voltage generator and at least...

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Abstract

The invention discloses a control circuit of a gate driving circuit, a working method and a display device. The control circuit comprises a detection circuit, a power source and a charge pump circuit, wherein the detection circuit is used for generating digital control signals corresponding to environment temperature according to the environment temperature of the gate driving circuit, the power source is used for providing initial voltage for the charge pump circuit, and the charge pump circuit is used for adjusting the initial voltage according to the digital control signals so as to generate driving voltage, and outputting the driving voltage to the gate driving circuit. According to the technical scheme of the invention, the driving voltage is dynamic and adjustable, and therefore, the power consumption of the gate driving circuit can be reduced, and the service life of a thin film transistor of the gate driving circuit can be prolonged.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a gate drive circuit control [0002] A circuit, its working method and a display device including the control circuit. Background technique [0003] The traditional liquid crystal display uses an external driver chip circuit to drive the thin film transistors on the panel to control the pixels to realize image display. With the continuous development of science and technology, in order to reduce the number of components on the traditional liquid crystal display and reduce the cost of its manufacturing technology, in recent years, the liquid crystal display has gradually developed to make the driving circuit structure (replacing the external driving chip circuit) directly on the display panel, such as The technology of integrating the gate driver circuit (gate diver circuit) for controlling the opening and closing of the gate of the thin film transistor into the liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3696G09G2300/0417G09G2320/041G09G2320/043G09G2330/021G09G3/3648H03K3/011H03K3/012G09G2320/045
Inventor 王谦
Owner BOE TECH GRP CO LTD
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