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Display device and method for eliminating power-off residual image thereof

A display device and display panel technology, which is applied to static indicators, instruments, etc., can solve problems such as the inability to guarantee the elimination of residual charges and the residual charge of liquid crystal panels.

Inactive Publication Date: 2019-01-11
HKC CORP LTD +1
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Problems solved by technology

[0004] Due to the limitation of liquid crystal charging and discharging speed, some charges may remain on the liquid crystal panel when it is turned off, which may cause the human eye to see afterimage after power off
The current common practice is to generate a control signal when the power is turned off, so that the second driver chip (Gate Driver) turns on the TFT switches of all channels at the same time, hoping to let the charge be released as soon as possible, but at this time due to the first driver chip (Data Driver) ) output is uncertain, so the discharge effect will vary with the display data of the screen, so this method cannot guarantee to completely eliminate the residual charge. Therefore, how to improve the above-mentioned conventional second driver chip (Gate Driver) There is a lack of technology when discharging liquid crystal panels, so a method for eliminating residual image after shutdown with low production cost and easy processing is proposed

Method used

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Embodiment Construction

[0032] The following descriptions of the various embodiments refer to the attached drawings to illustrate specific embodiments that the present application can be implemented in. The directional terms mentioned in this application, such as "up", "down", "front", "rear", "left", "right", "inside", "outside", "side", etc., are for reference only The orientation of the attached schema. Therefore, the directional terms used are used to illustrate and understand the application, but not to limit the application.

[0033] The drawings and descriptions are to be regarded as illustrative in nature and not restrictive. In the figures, structurally similar units are denoted by the same reference numerals. In addition, the size and thickness of each component shown in the drawings are arbitrarily shown for understanding and convenience of description, but the present application is not limited thereto.

[0034] In the drawings, the thickness of layers, films, panels, regions, etc., ar...

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Abstract

A display device and a method for eliminating power-off residual image thereof are provided. The display device comprises a display panel; a gamma voltage generation unit connected to the display panel through a plurality of gamma voltage lines; a voltage regulating unit connected to the display panel through a reference voltage line; a control unit connected between the reference voltage line andthe plurality of gamma voltage lines; a power supply unit that transmits a control signal to the control unit; when the control unit acquires that the control signal is at a first potential, the reference voltage line and the plurality of gamma voltage lines are short-circuited.

Description

technical field [0001] The present application relates to the technical field of screen display control, in particular to a display device and a method for eliminating after-image after shutdown. Background technique [0002] Liquid crystal display (Liquid Crystal Display, LCD) has been widely used recently. With the improvement of drive technology, it has the advantages of low power consumption, thin and light weight, and low voltage drive. It has been widely used in video recording and playback Video machines, notebook computers, desktop monitors and various projection equipment. [0003] And the liquid crystal display device generally has a gate driving unit, a source driving circuit and a pixel array. There are multiple pixel circuits in the pixel array, and each pixel circuit is turned on and off according to the scan signal provided by the gate drive unit, and displays a data frame according to the data signal provided by the source drive circuit. [0004] Due to the...

Claims

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Application Information

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IPC IPC(8): G09G3/36
CPCG09G3/3648G09G3/3696G09G2320/0252G09G2320/0673
Inventor 王明良
Owner HKC CORP LTD
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