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Chip-on-glass (COG) type liquid crystal display device

A liquid crystal display device and glass-on-chip technology, applied in static indicators, nonlinear optics, instruments, etc., can solve problems such as high operating frequency

Inactive Publication Date: 2011-11-23
SILICON WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the COG method is used in a large-sized liquid crystal display device with high resolution and high quality, a high operating frequency is required, and thus impedance matching in the transmission line is required, so that in the source driver IC at the receiving terminal including The traditional configuration of terminal resistors is not suitable for realizing high-definition and high-quality images in COG liquid crystal display devices

Method used

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  • Chip-on-glass (COG) type liquid crystal display device
  • Chip-on-glass (COG) type liquid crystal display device
  • Chip-on-glass (COG) type liquid crystal display device

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Embodiment Construction

[0044] Preferred embodiments of the invention are described below with reference to the accompanying drawings. Regardless, the same reference numbers used in the drawings designate the same or like parts.

[0045] Figure 5 It is a diagram illustrating a chip-on-glass (COG) liquid crystal display device according to the first embodiment of the present invention.

[0046] Such as Figure 5 As shown, the COG liquid crystal display device 500 of the first embodiment of the present invention includes a printed circuit board (PCB) 510 , a glass substrate 520 and a flexible printed circuit board (FPC) 530 .

[0047] The PCB 510 includes a timing controller 511 . Also, on the PCB 510, a transmission line 513 is provided to transmit a pair of differential signals output from the timing controller 511 to the glass substrate. The timing controller 511 includes an impedance matching resistor 512 for impedance matching.

[0048] In addition, a liquid crystal panel 521 , a plurality o...

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PUM

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Abstract

Provided is a chip-on-glass (COG) type liquid crystal display device minimizes a reflected wave from an input terminal of a source driver IC, regardless of the resistance value of a transmission line on a glass substrate, through the use of impedance matching at a front terminal of an LOG and impedance matching at an output terminal of a timing controller, thereby enhancing the frequency characteristic while maintaining a slim and lightweight design, so that it is possible to express a high-resolution high-quality image.

Description

technical field [0001] The present invention relates to a liquid crystal display device, in particular to a chip-on-glass (COG) type liquid crystal display device, which uses the impedance matching of the timing controller and the impedance matching on the front end of the glass line (LOG) without considering the glass In the case of the impedance value of the transmission line on the substrate, the reflected wave from the input terminal of the source driver integrated circuit (IC) is reduced, thereby maintaining a thin and light design and improving frequency characteristics, so that a high-resolution high-quality picture can be realized. Background technique [0002] In order to drive row lines and column lines of a liquid crystal display (LCD) panel, source driver ICs and gate driver ICs are provided on the periphery of the panel. The gate driver IC is used to select the image elements to transmit the image data, while the actual image data and clock signals of the image ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G02F1/133
CPCG02F1/133G02F1/136277G09G2300/0408G09G2370/08
Inventor 吴洸一金俊镐崔丁焕
Owner SILICON WORKS CO LTD
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