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Shift register

A shift register and bit setting technology, applied in static memory, digital memory information, instruments, etc., can solve problems such as image quality degradation

Active Publication Date: 2014-12-17
LG DISPLAY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, image quality degradation occurs in the image display device

Method used

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Embodiment Construction

[0053] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

[0054] figure 1 is a diagram illustrating a shift register according to an embodiment of the present invention. figure 2 is graphically figure 1 A diagram of an example of a 6-phase clock pulse provided by the stages contained in a shift register. image 3 is provided to figure 1 each level of or from figure 1 The timing diagram of various signals output by each stage of the

[0055] Such as figure 1 As shown in , the shift register according to the embodiment of the present invention includes m stages ST1 to STm, m compensation switching elements col to com, and 6 dummy stages DM1 to DM6.

[0056] Odd-numbered stages among stages ST1 to STm, namely stages ST1, ST3, ..., and STm-1, and odd-numbered stages among dummy stages DM1 to Dm6, namely first dummy stage DM1, third dummy stage DM3, and fifth dummy stage DM5 i...

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Abstract

Disclosed is a shift register including stages for sequentially outputting output pulses including carry and scan pulses. Odd-numbered stages supply corresponding scan pulses to odd-numbered gate lines in a sequential manner, and even-numbered stages supply corresponding scan pulses to even-numbered gate lines in a sequential manner. Each stage includes a carry output unit for generating a carry pulse, based on a first discharge voltage and a clock pulse having a low-level voltage equal to the first discharge voltage, and supplying the carry pulse to at least one of upstream and downstream stages, and a scan output unit for generating a scan pulse, based on a second discharge voltage having a higher voltage than the first discharge voltage and the clock pulse, and supplying the scan pulse to a corresponding gate line.

Description

[0001] This application claims priority from Korean Patent Application No. 10-2013-0061481 filed May 30, 2013, which is hereby incorporated by reference as if fully set forth herein. technical field [0002] The present invention relates to a shift register, in particular to a shift register capable of improving driving performance by preventing leakage current and reducing frame size by reducing the falling edge time of scanning pulses. Background technique [0003] In general, a liquid crystal display (LCD) device is adapted to display images by adjusting light transmittance of liquid crystals using an electric field. To this end, the LCD device includes a liquid crystal panel having pixel regions arranged in a matrix, and a driving circuit for driving the liquid crystal panel. [0004] In a liquid crystal panel, a plurality of gate lines and a plurality of data lines are arranged to cross each other, and pixel regions are respectively defined at the crossing portions of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G11C19/28
CPCG09G3/3677G09G2310/0286G11C19/28G09G3/36G11C19/00
Inventor 苏炳成崔贞美
Owner LG DISPLAY CO LTD
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