Liquid crystal display device with improved heat dissipation...

Details Liquid crystal display device with improved heat dissipation... Liquid crystal display device with improved heat dissipation...

2004-12-23

2009-06-09

Schechter, Andrew (Department: 2871)

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

C349S043000, C349S161000, C257S072000

Reexamination Certificate

active

07545451

ABSTRACT:
Disclosed is a liquid crystal display (LCD) device having gate and data driving elements with improved heat dissipation properties. The driving elements each have the following: a source and a drain electrode, each with contact holes that provide electrical contact with an active area formed on the driving element's substrate; multiple separate channels between the source and the drain; and a gate electrode formed crossing the multiple channels. Also formed are dummy contact holes that allow the metal of the electrodes to penetrate to a layer below the active layer without contacting it. The dummy contact hole provides a thermally conductive channel whereby heat that would otherwise build up in the channels, and degrade the performance of the driving element, is conducted through the dummy contact hole and radiated away by the electrode metal.

REFERENCES:
patent: 5338959 (1994-08-01), Kim et al.
patent: 6028580 (2000-02-01), Kosegawa et al.
patent: 6841434 (2005-01-01), Miyairi et al.
patent: 6927809 (2005-08-01), Gotoh et al.
patent: 2002/0033918 (2002-03-01), Shigeno et al.
patent: 2003/0181043 (2003-09-01), Tanada et al.

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