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Gate driving unit circuit, gate driving circuit and display device

A gate drive circuit and unit circuit technology, which is applied in the field of gate drive unit circuits, gate drive circuits and display devices, can solve the problems of unfavorable narrow borders, reduce power consumption, increase the number of TFT components, etc., and achieve the reduction of TFT components Quantity effect

Active Publication Date: 2020-12-25
NANJING CEC PANDA LCD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since each level of circuit has a separate memory compensation module, the number of TFT components required by this circuit increases significantly, which is not conducive to realizing narrow borders and reducing power consumption

Method used

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  • Gate driving unit circuit, gate driving circuit and display device
  • Gate driving unit circuit, gate driving circuit and display device
  • Gate driving unit circuit, gate driving circuit and display device

Examples

Experimental program
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Embodiment 1

[0057] Figure 5 It is a schematic frame diagram of a gate driving unit circuit according to Embodiment 1 of the present invention. Such as Figure 5 As shown, the gate drive unit circuit of this embodiment includes a memory compensation circuit 100, a first gate output circuit 201 and a second gate output circuit 202, and the memory compensation circuit 100 is connected to the pull-up control node of the first gate output circuit netAn and the pull-up control node netAn+2 of the second gate output circuit. The gate drive unit circuit in this embodiment is suitable for cascading to form a gate drive circuit with a left-right interleaved drive architecture, and the first gate output circuit 201 and the second gate output circuit 202 are respectively used to output the first gate scan signal Gn and the second gate scan signal Gn+2.

[0058] The memory compensation circuit 100 comprises: a first memory module 101, a second memory module 102 and a hierarchical control module 10...

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PUM

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Abstract

The invention discloses gate drive unit circuits, a gate drive circuit and a display device and relates to the field of liquid crystal display. A gate drive unit circuit comprises a memory compensating circuit and at least two gate output circuits. Each gate output circuit comprises a pull-up control node, a pull-up module, a pull-down module, a pre-charging module and a maintenance module. The pull-up module is controlled by the pull-up control node and outputs a scan signal corresponding to the gate output circuit. In a touch pause phase, the memory compensating circuit empties charges of the pull-up control node in each gate output circuit. In a touch pause later phase, the memory compensating circuit raises a voltage of the pull-up control node in each gate output circuit from a low level to a first high level. According to the embodiments of the invention, in the touch pause phase, all levels of pull-up control nodes are maintained at the low level, display transverse stripes resulting from characteristic drifting difference of thin film transistors in the pull-up modules are eliminated, and the number of TFT elements of the memory compensating circuit is equivalently reducedin a sharing mode.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a gate drive unit circuit, a gate drive circuit and a display device. Background technique [0002] In the touch display panel, in order to achieve a touch reporting rate of 120Hz in a conventional 60Hz display panel, the self-capacitive touch display usually needs to suspend the display output during the normal display period, and then perform a touch pause. After the touch pause Then continue with the normal display. Such an action will be repeated many times, which requires the gate drive circuit (GOA circuit) to be able to pause at any position during the display period, and then be able to normally start the drive after the touch pause without causing display differences. In the gate drive unit circuit at the touch pause position, the pull-up control node is at a high level during the touch detection phase; in the gate drive unit circuit at the non-touch pause position...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G06F3/044
CPCG06F3/044G09G3/3677G09G3/3696
Inventor 戴超黄洪涛
Owner NANJING CEC PANDA LCD TECH