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Scanning driver

A scanning driver, liquid crystal display technology, applied in the direction of instruments, static indicators, etc.

Active Publication Date: 2010-09-15
RAYDIUM SEMICON (KUNSHAN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scan driver is used in a liquid crystal display

Method used

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Experimental program
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Embodiment Construction

[0025] Please refer to image 3 , which shows a structural diagram of a scan driver according to an embodiment of the present invention. exist image 3 Among them, the scan driver 300 is used for a liquid crystal display. The scan driver 300 includes a first address logic unit 311 , a second address logic unit 312 , level shift units 331 , 332 and a decoding unit 340 .

[0026] The first address logic unit 311 receives the clock signal CPV and the control signal DI0. The first address logic unit 311 enables an i-th first address signal X(i) of the N first address signals in a K-th clock cycle T(K) according to the control signal DI0 . Wherein, i is a positive integer less than or equal to N. i is equal to the remainder of K / N. When K is a multiple of N, i is equal to N. In the embodiment of the present invention, N takes 16 as an example for illustration.

[0027] The second address logic unit 312 enables a j-th second address signal Y(j) of the M second address signals...

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Abstract

The invention relates to a scanning driver used for a liquid crystal display. The scanning driver comprises a first and a second address logic units, a first and a second level shifting units and a decoding unit. According to a control signal, the first address logic unit enables an i first address signal of N first address signals in a K clock cycle. The K is divided by the N and produces a remainder of the i. According to the control signal, the second address logic unit enables a j second address signal of M second address signals in the K clock cycle. The K is divided by the N and produces a quotient and then the j equals to the quotient plus 1. The first and the second level shifting units respectively promote the signal swing of the first and the second address signals. When the i first address signal and the j second address signal are both enabled, the decoding unit enables a (j minus 1) multiply N plus i scanning signal of the M multiply N scanning signals.

Description

technical field [0001] The invention relates to a scanning driver, in particular to a scanning driver which uses two sets of address signals to determine scanning signals. Background technique [0002] figure 1 A structure diagram of a conventional scan driver 100 with 256 scan signals is shown. The scan driver 100 includes a shift register 110 , a control unit 120 , a level shift unit 130 and an output buffer unit 140 . The shift register 110 receives an initial signal DI0 and a clock signal CPV. When the start signal DI0 is turned on, the shift register 110 starts to enable the address signals A( 1 ) to A( 256 ) sequentially in 256 clock cycles according to the clock signal CPV. The control unit 120 receives the address signals A(1) to A(256), and further determines whether to forcibly enable all the address signals A(1) to A(256) according to the control signal XON. The level shift unit 130 receives the address signals A(1) to A(256), and increases the signal swing of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/34G09G3/20
Inventor 王建国吴欣晔洪绍评赵晋杰
Owner RAYDIUM SEMICON (KUNSHAN) CO LTD