Shifting unit, shifting device and liquid crystal display
A control unit and transistor technology, applied in static indicators, instruments, etc., can solve the problems of large power consumption of the LCD drive circuit, compatibility of four-layer photomask technology, short circuit life, etc., and achieve stable working performance and use The effect of long life and low power consumption
Active Publication Date: 2014-11-05
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology
[0022] The present invention solves the problems of high power consumption, short circuit life and incompatibility with four-layer photomask technology in the prior art liquid crystal display drive circuit
Method used
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Embodiment Construction
[0051] The inventors found that the generation of the signal QB in the ASG unit circuit of the prior art is relatively complicated, and for the existing Figure 5 As far as the signal QB generating circuit shown in , when the signal Q is at a high level, T2 is in a conduction state, and the signal QB is pulled down to a low level by the negative voltage source VGL. If the clock signal CKB is at high level at this time, TI and T2 are in the open state at the same time, which will cause a large current in the circuit, resulting in high power consumption of the circuit. At the same time, T1 is turned on and becomes a short-circuit state, which affects the The lifespan is damaged, shortening the lifespan of the circuit.
[0052] while for existing Figure 7 For the signal QB generation circuit shown in , the capacitor C1 (pF order) will take up a lot of space. A large area of metal graphics will block most of the space in the area where the panel border is coated with border g...
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The invention discloses a shifting unit, a shifting device and a liquid crystal display. The shifting unit comprises a first control unit, a second control unit and a gate driving signal generating unit, wherein the first control unit is used for receiving input control signals to generate first output control signals, the input control signals include first input control signals and second input control signals, the second control unit is used for receiving the first output control signals to generate second output control signals, the gate driving signal generating unit is used for receiving clock signals, the first output control signals and the second output control signals to generate gate driving signals, and the clock signals include first clock signals and second clock signals, which are opposite in phase. Power consumption of circuits is reduced, service life of the circuits can be prolonged, and the shifting unit is stable in operation. Manufacturing of the shifting unit is compatible to the 4-mask technique, so that manufacturing time is saved, and capacity is improved.
Description
technical field [0001] The invention relates to the field of liquid crystal display, in particular to a displacement unit, a displacement device and a liquid crystal display using the displacement device. Background technique [0002] Thin film transistor-liquid crystal panel (TFT-LCD, Thin film transistor-Liquid crystal display) makes LCD enter a new stage of high-quality, high-color display. At present, almost all LCDs use TFT active matrix without exception. . TFT active matrix mainly includes a-Si (amorphous silicon) TFT active matrix and P-Si (poly-silicon) TFT active matrix. Compared with P-Si TFT technology, a-Si TFT technology is more mature, with better uniformity and lower cost. [0003] See figure 1 , figure 1 It is a structural schematic diagram of a TFT-LCD panel in the prior art, which displays images through a matrix of liquid crystal pixels. It includes a plurality of sub-pixel units, and a plurality of gate lines G1, G2...Gn connected thereto, and a plu...
Claims
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IPC IPC(8): G09G3/36G09G3/20
Inventor 吴天一杨康吴勇马骏
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD