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Scan driver for selectively performing progressive scanning and interlaced scanning and display using the same

A scanning driver, progressive scanning technology, applied in the field of scanning drivers, can solve the problem that FDP does not include progressive scanning and interlaced scanning scanning drivers, etc.

Inactive Publication Date: 2009-11-11
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Therefore, conventional FDPs display image data using progressive or interlaced scanning because this FDP does not include a scan driver that can selectively perform progressive and interlaced scanning

Method used

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  • Scan driver for selectively performing progressive scanning and interlaced scanning and display using the same
  • Scan driver for selectively performing progressive scanning and interlaced scanning and display using the same
  • Scan driver for selectively performing progressive scanning and interlaced scanning and display using the same

Examples

Experimental program
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Embodiment 2

[0083] Figure 5A is a block diagram of an organic electroluminescent (EL) display including a scan driver according to another exemplary embodiment of the present invention, and Figure 5B yes Figure 5A The circuit diagram of the pixel driving circuit of the organic EL display shown.

[0084] refer to Figure 5A , the organic EL display includes a scan driver 301 , a data driver 303 , and a pixel array 305 .

[0085] The scan driver 301 selectively executes figure 1 Progressive scan and interlaced scan are shown. The scan driver 301 also applies scan signals via m scan lines, and applies emission control signals via m emission control lines.

[0086] The data driver 303 applies data to the lines of the pixel array 305 selected by the emission control signal and the scan signal. The applied data can be voltage or current. When the applied data is a voltage, the organic EL display may be a voltage writing type, and when the applied data is a current, the organic EL disp...

Embodiment 3

[0122] Figure 7 is a circuit diagram of a scan driver according to another exemplary embodiment of the present invention.

[0123] refer to Figure 7 , the scan driver includes a shift register 400 , a mode selection unit 420 , an odd line selection unit 440 , and an even line selection unit 460 .

[0124] The shift register 400 includes a plurality of flip-flops, and there are more flip-flops than scan lines of the panel. Thus, when the panel includes m scan lines, the shift register 400 includes at least m+1 flip-flops. At least one of the clock signal CLK and the inverted clock signal / CLK is input to each flip-flop.

[0125] The first flip-flop FF1 receives the start pulse VSP, and the clock signal CLK is input to the clock input pin CK. The first flip-flop FF1 samples the data of the start pulse VSP on the rising edge of the clock signal CLK, and outputs the sampled data.

[0126] The second flip-flop FF2 receives the output signal SR1 of the first flip-flop FF1, an...

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Abstract

A scan driver that selectively performs progressive scanning and interlaced scanning and a display using the same. The scan driver includes a shift register having a plurality of flip-flops arranged in series, an odd line selection unit having a plurality of NAND gates, and an even line selection unit having a plurality of NAND gates. In response to an odd line control signal and an even line control signal input to the odd line selection unit and the even line selection unit, respectively, the scan driver performs progressive scanning or interlaced scanning. The scan driver may also include a mode selection unit to selectively perform progressive scanning or interlaced scanning in response to a mode selection signal.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority and benefit of Korean Patent Application No. 10-2004-0098255 filed on November 26, 2004 and Korean Patent Application No. 10-2004-0098267 filed on November 26, 2004, hereby for the purposes hereof All purposes fully set forth are hereby incorporated by reference. technical field [0003] The present invention relates to a scan driver for a flat panel display (FPD), and more particularly, to a scan driver which can selectively perform progressive scanning and interlaced scanning. Background technique [0004] The scan driver is an essential circuit of the FPD. Scan drivers are used to drive multiple pixels arranged along rows and columns. To drive these pixels, the scan driver enables pixels of a selected row to emit light, or enables data to be input to the selected pixels. [0005] In general, the formation of one image frame requires a vertical synchronization signal defining a...

Claims

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Application Information

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IPC IPC(8): G09G3/30G09G3/20H05B33/08H05B33/14H05B44/00
CPCY02B20/346Y02B20/343G09G3/3266G09G2310/0202G09G2310/0224G09G2310/0286
Inventor 申洞蓉
Owner SAMSUNG DISPLAY CO LTD
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