LCD device removing ghost

Abstract

The present invention discloses a liquid crystal display for eliminating remnant shadows, which comprises a source cathode driver, a grid driver and a plurality of pixel units. Each pixel unit comprises a switch unit, a pixel electrode, a first electrode, a second electrode, a liquid crystal capacitor and a storage capacitor. The switch unit is used to communicate a pixel data voltage when receiving a driving signal voltage. The first electrode is used to provide a first signal voltage. The second electrode is used to provide a second signal voltage. The first pole of the liquid crystal display is electrically connected with the first electrode; a second pole is electrically connected with the pixel electrode; so the liquid crystal molecules in the liquid crystal display can be driven according to the pixel data voltage and the first signal voltage. The first pole of the storage capacitor is connected with the pixel electrode; the second pole is electrically connected with the second electrode; wherein, the quasi bit of the second signal voltage is bigger than the quasi bit of the first signal voltage.

Description

【Technical field】 [0001] The invention relates to a liquid crystal display, in particular to a liquid crystal display capable of improving residual image after shutdown. 【Background technique】 [0002] Displays with advanced functions have gradually become an important feature of today's consumer electronics products. Liquid crystal displays have gradually become widely used in various electronic devices such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or notebook computer screens. high resolution color screen monitor. [0003] However, when the liquid crystal display is turned off, because the leakage current of the transistor is very small, the charge of the previous display screen sometimes remains in the liquid crystal capacitor of the liquid crystal display panel due to insufficient discharge, so there will be image sticking. . In order to avoid the problem of image sticking, the prior art (such as U.S. Patent No. 6,476,590)...

AI Technical Summary

Problems solved by technology

[0003] However, when the liquid crystal display is turned off, because the leakage current of the transistor is very small, the charge of the previous display screen sometimes remains in the liquid crystal capacitor of the liquid crystal display panel due to insufficient discharge, so there will be image sticking.

In order to avoid the problem of image sticking, the prior art (such as U.S. Patent No. 6,476,590) discloses that after shutdown and startup, the timing controller sends a specific data signal voltage, so that the source driver can generate a specific data signal voltage according to the specific data signal voltage. Screen, such as black screen or white screen, but such design will increase the complexity of system design, so it still needs to be further improved

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