Planar display

Abstract

The invention discloses a flat panel display, which comprises a plurality of pixel electrodes, a first multiplexer, a second multiplexer, a third multiplexer and a gate driver. The gate driver is electronically connected with the pixel electrode, and provided with N plus 1 shift registers. The nth shift register comprises an SR trigger, a first transistor and a second transistor. When the flat panel display is turned off, a turning-off control signal is converted from a high potential voltage to a low potential voltage, so as to switch an input low power supply voltage outputted from the first multiplexer to a high operating voltage, switch a zeroth input time pulse signal outputted from the second multiplexer to a high operating voltage and switch a first input time pulse signal outputted from the third multiplexer to a high operating voltage, thereby resulting in conduction of the first transistor or the second transistor, and the nth output signal outputs the high operating voltage to allow the pixel electrodes to take discharge action. By using the turning-off control signal, all pixel electrodes can take discharge action, so as to eliminate afterimage during the turning-off.

Description

technical field [0001] The invention relates to a flat display, and in particular to a flat display which is applied in the process of amorphous silicon and can eliminate afterimage after shutdown. Background technique [0002] Flat panel displays, such as Liquid Crystal Displays (LCDs), are widely used in Personal Digital Assistants (PDAs) due to their advantages of high image quality, small size, light weight, low driving voltage, and low power consumption. Consumer communication or electronic products such as PDA), mobile phone, notebook computer or car display, and gradually replace the cathode ray tube (Cathode Ray Tube, CRT) and become the mainstream of the display. [0003] In the general LCD structure, after the LCD monitor is turned off, an afterimage is often seen on the LCD panel, and sometimes it will disappear after a few seconds. The display quality of the display panel. Taking thin film transistor (Thin Film Transistor, TFT) liquid crystal display as an exam...

AI Technical Summary

Problems solved by technology

It can be seen from FIG. 3 and FIG. 4 that compared with the gate driver 12y (y=1~P) in FIG. 1, the amorphous silicon gate driver 300 does not have the function of the shutdown control signal XAO (and does not It has the function of eliminating power-off afterimage), because in the traditional liquid crystal display 10, the control signal XAO is a low potential voltage (about 0-3.3 volts), which can be temporarily shifted by the displacement in the gate driver 12y (y=1-P). However, in the manufacturing process of amorphous silicon, the shutdown control signal XAO is a high potential voltage (up to 20 volts), which cannot be controlled by the shift register 31x (x=1 ~N+1) received, so in the liquid crystal display using the amorphous silicon process, the problem of after-image after shutdown reappeared

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