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A driving circuit, a display device and a driving method of a display panel

A display panel and drive circuit technology, applied in the direction of electrical components, static indicators, and generating electric pulses, can solve problems such as gate drive module discharge module being turned on by mistake, and achieve the effect of avoiding charge accumulation and protecting normal operation

Inactive Publication Date: 2019-08-20
BOE TECH GRP CO LTD +1
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Problems solved by technology

[0006] In view of this, the embodiment of the present invention provides a display panel drive circuit, display device and method to solve the problem in the prior art that the discharge module in the gate drive module is mistakenly turned on when the GOA display product is turned on

Method used

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  • A driving circuit, a display device and a driving method of a display panel
  • A driving circuit, a display device and a driving method of a display panel
  • A driving circuit, a display device and a driving method of a display panel

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example 1

[0072] by Figure 3b Take the driving circuit as an example, and the specific working principle is to participate in Figure 6 , assuming that the minimum turn-on voltage VGHmin is 15V, and the corresponding discharge control signal Vcontrol detected at this time is 1.2V, then the positive threshold voltage V+ is set to 1V, and the negative threshold voltage V- is set to 1.5V. When the power is turned on, because the initial voltage signal Vinitial is unstable and the power is too slow, that is, the voltage rises slowly, when the initial voltage signal Vinitial is less than 1V, the Schmitt trigger 22 will send the discharge control signal Vcontrol to the gate drive module 3 , however, when the initial voltage signal Vinitial is less than 1V, the turn-on voltage VGH has not yet reached the minimum turn-on voltage value VGHmin15V, at this time the gate drive module 3 cannot turn on all the thin film transistors on the display panel to discharge, that is, it will not cause the di...

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Abstract

The invention discloses a display panel drive circuit, a display device and a drive method. The display panel drive circuit includes: a power supply module, a signal processing module and a gate drive module. The power supply module provides an initial voltage signal for the signal processing module, and the signal processing module The module receives the initial voltage signal output by the power module, and when the voltage of the initial voltage signal becomes smaller, it sends a discharge control signal to the gate drive module, and the gate drive module provides the turn-on voltage signal to each of the display panels under the control of the discharge control signal. The grid lines are used to discharge the display panel when the voltage value of the turn-on voltage signal is greater than a preset voltage. Since the signal processing module sends the discharge control signal to the gate circuit drive module when the voltage signal becomes smaller, it solves the problem that the discharge module is accidentally turned on due to the unstable voltage signal rise when starting up, thereby protecting the normal operation of the drive circuit , to avoid the accumulation of charge affecting the service life of the display product.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a driving circuit of a display panel, a display device and a driving method. Background technique [0002] With the development of display technology, modern display products have higher and higher requirements for ultra-narrow borders and low cost, so the market share of display products based on Gate Driver on Array (GOA) is increasing. However, compared with Chip On Film (COF) display products, GOA display products have stricter requirements on electrical parameters, and have weaker impact resistance to unpredictable currents. When used in unstable conditions for a long time, the gate Pole driver modules may suffer irrecoverable damage. [0003] Existing display panels, such as figure 1 As shown, each time the power is turned off, the discharge module in the gate drive module 3 needs to be used to discharge the inside of the display panel to improve the problem of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20
CPCG09G3/20G09G2330/026G09G2330/027G09G2310/0289G09G2310/0267G09G2310/08G09G2330/028H03K3/0377
Inventor 王建军汪敏马睿
Owner BOE TECH GRP CO LTD
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