Shifting unit, shifting device and LCD (liquid crystal display)
A technology of liquid crystal display and control unit, applied in static indicators, instruments, etc., can solve the problems of high power consumption of liquid crystal display driving circuit, compatibility of four-layer mask process, short circuit life, etc., to avoid short circuit phenomenon , the effect of long service life and shortened manufacturing time
Active Publication Date: 2015-02-18
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology
[0020] 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
[0048] 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 also 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. The life of the circuit is damaged, shortening the life of the circuit.
[0049] 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 frame glue area of the panel frame. In the box-making ...
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The invention discloses a shifting unit, a shifting device and an LCD. The shifting unit includes a first control unit, a second control unit and a gate drive signal generating unit, wherein the first control unit receives an input control signal and a second output control signal and generates a first output control signal, and the input control signal includes a first input control signal and a second input control signal; the second control unit receives a clock signal and the first output control signal and generates the second output control signal, and the clock signal includes a first clock signal and a second clock signal that are opposite; the gate drive signal generating unit receives the clock signal, the first output control signal and the second output control signal and generates a gate drive signal. The shifting unit reduces the power consumption of a circuit, prolongs the service life of the circuit; and as the manufacture of the shifting unit can be compatible with the 4mask technology, the manufacturing time is saved, and the productivity 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] In a liquid crystal display (LCD), or other flat-panel displays with a similar structure such as e-books, organic light-emitting diode flexible displays, etc., the gate lines are arranged laterally as row driving lines in the layout of the liquid crystal pixel array. [0003] Taking a thin film transistor liquid crystal panel (TFT-LCD) as an example, it displays images through a matrix of liquid crystal pixels. See figure 1 , figure 1 It is a structural diagram of a TFT-LCD panel in the prior art, including multiple sub-pixel units, multiple gate lines G1, G2...Gn, and multiple data lines D1, D2...Dm connected thereto. Wherein, each sub-pixel unit includes a thin film transistor, a storage capacitor, a liquid crystal capacitor, etc., and the...
Claims
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IPC IPC(8): G09G3/36G09G3/20
Inventor 吴天一李嘉灵杨康凌志华
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD