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Display panel driver

A display panel, drive technology, applied in the direction of static indicators, cathode ray tube indicators, instruments, etc.

Active Publication Date: 2004-12-01
HANNSTAR DISPLAY CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existence of wiring space around the liquid crystal panel and the connection substrate around the liquid crystal panel become problems

Method used

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no. 1 example

[0030] Reference below Figures 1 to 4 , the display panel driver according to the first embodiment of the present invention will be described. According to the first embodiment, the display panel driver of the present invention is used as a liquid crystal driver for driving a liquid crystal panel having XGA (1024×768 dots) resolution.

[0031] figure 1 is a block diagram showing the structure of the display panel driver according to the first embodiment. like figure 1 As shown, the display panel driver according to the first embodiment includes: a signal line driving circuit 100 having an LVDS input interface 1, a timing controller 2, a signal line driving part 4 and a control signal outputting part 7; and scan line driver circuit 5 . The signal line driving section 4 includes 1024-bit shift registers 8 , 1024 24-bit data registers 9 , 24576-bit load latches 10 , and 3072 8-bit converters 11 . As described below, the signal line driver circuit 100 and the scan line drive...

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Abstract

The relationship L1<=V(F1xepsilon<1 / 2>x100) is satisfied where a transmission path length between the interface 1 and the timing controller is L1, a propagating speed of electromagnetic waves in a vacuum is V, a frequency of a signal transmitted between the interface and the timing controller is F1, and a comparative dielectric constant of a transmission path medium between the interface and the timing controller is epsilon1. The relationship L2<=V(F2xepsilon2<1 / 2>x100) is satisfied where a transmission path length between the timing controller and the signal driving portion is L2, a propagating speed of electromagnetic waves in a vacuum is V, a frequency of a signal transmitted between the timing controller and the signal line driving portion is F2, and a comparative dielectric constant of a transmission path medium between the timing controller and the signal line driving portion is epsilon2. Thus, the occurrence of EMI noise can be suppressed, and the implementation cost of a display apparatus can be reduced.

Description

technical field [0001] The present invention relates to a display panel driver for driving a display panel, in particular, to a display panel driver for receiving video signals according to a low voltage differential method. Background technique [0002] The interface of a conventional liquid crystal display device transmits the individual bits of the RGB video signal, the horizontal sync signal, the vertical sync signal and the data enable signal in parallel at an amplitude voltage of 5 volts or +3.3 volts. However, as the resolution of liquid crystal display panels has increased in recent years, the number of interfaces and the frequencies of transmitted signals have increased accordingly. As a result, problems including electromagnetic interface (EMI) noise may arise. The number of interfaces has increased because, for example, in order to transmit 24-bit data, 51 signal lines are required, including 48 (=24×2) signal lines and signal lines for control signals. If the G...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/133G06F3/00G09F9/00G09G3/20G09G3/36G09G5/00
CPCG09G5/006
Inventor 石桥修浅田秀树芳贺浩史
Owner HANNSTAR DISPLAY CORPORATION