Display device and method for preventing screen flicker
A display device and screen technology, applied in static indicators, instruments, etc., can solve the problems of long discharge time, slow discharge speed, and screen flickering of the power supply circuit, and achieve the effect of avoiding charge residue, preventing screen flickering, and speeding up the speed.
Active Publication Date: 2014-04-23
AU OPTRONICS KUNSHAN CO LTD
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Problems solved by technology
[0004] However, if the discharge speed of the capacitor is too slow, the discharge time of the power supply circuit is too long, so that the residual charges in the capacitors C1 and C2 pass through the wiring (not shown) connected to the first output voltage terminal AVDD and the second output voltage terminal AVEE. shown) reflows to the LCD panel (not shown), causing charge to remain on the LCD panel
When the LCD panel is turned on next time, the charge remaining on the LCD panel will cause the screen displayed on the panel to flicker
Method used
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[0031] Please refer to Figure 2a , Figure 2a It is a schematic diagram of a display device 200 according to an embodiment of the present invention. like Figure 2a As shown, the display device 200 includes a liquid crystal panel 210 , a driving module 230 and a power module 250 . The liquid crystal panel 210 includes a plurality of scanning lines S1, S2, ..., Sn and a plurality of data lines D1, D2, ..., Dn, wherein the scanning lines S1-Sn and the data lines D1-Dn are interlaced to form a plurality of pixels P, the The pixels P form a pixel array 211 .
[0032] The driving module 230 includes driving circuits such as a gate driver 231 and a source driver 233 . The gate driver 231 is electrically connected to the liquid crystal panel 210 through the scan lines S1-Sn to drive the pixel transistors T connected to the scan lines S1-Sn. The source driver 233 is electrically connected to the liquid crystal panel 210 through the data lines D1-Dn, and the source driver 233 is ...
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The invention discloses a display device and a method for preventing screen flicker, wherein the display device includes a liquid crystal panel, a power module, a drive module and a switch unit. The liquid crystal panel includes a plurality of pixels. The power module receives starting signals and is started according to the starting signal for providing working voltage to the drive module. The power source module includes a voltage stabilizing capacitor for stabilizing working voltage. The drive module includes a grid electrode driver and a discharge resistor. The grid electrode driver is driven by the working voltage for connecting with the pixels. The discharge resistor is coupled between the voltage stabilizing capacitor and the grounding terminal. The switch unit is connected between the voltage stabilizing capacitor and the discharge resistor electrically. After the switch unit is connected, the voltage stabilizing capacitor is connected to the discharge resistor electrically through the switch unit, so that residue charge in the voltage stabilizing capacitor is released to the grounding terminal through the discharge resistor.
Description
technical field [0001] The present invention relates to a display device, and in particular to a display device capable of releasing the residual charge of a voltage stabilizing capacitor. Background technique [0002] Today's large-size panels such as Advanced Hyper-Viewing Angle (AHVA) technology panels, etc., will have the phenomenon of charge remaining on the LCD panel during the shutdown process, causing the LCD panel to appear dark when the LCD panel is turned on next time. The screen flickers. The reason why the charge remains on the panel is to provide the voltage source required by the drive circuit to drive the power circuit of the LCD panel. During the shutdown process, the power circuit discharges for too long, causing the charge on the power circuit to be supplied through the power circuit. The wiring of the voltage source flows back to the pixel capacitance on the LCD panel and stores it, causing charge to remain on the LCD panel. [0003] Please refer to fi...
Claims
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IPC IPC(8): G02F1/133
CPCG09G3/3648G09G2320/0247G09G2320/0257G09G2330/027
Inventor 刘建志林能毅
Owner AU OPTRONICS KUNSHAN CO LTD