Liquid crystal panel having dual column spacer and...

Details Liquid crystal panel having dual column spacer and... Liquid crystal panel having dual column spacer and...

2006-06-28

2009-10-27

Sanghavi, Hemang (Department: 2874)

Liquid crystal cells, elements and systems

Particular structure

Having significant detail of cell structure only

C349S155000, C349S157000

Reexamination Certificate

active

07609357

ABSTRACT:
Disclosed is a liquid crystal panel having a dual column spacer and a manufacturing method thereof. The liquid crystal panel includes a first substrate on which a polished organic insulation film is formed on the entire surface of a pixel region including a TFT. The first substrate includes a contact hole formed through the organic insulation film; a second substrate disposed opposite to the first substrate and having a black matrix and a color filter; a first column spacer formed on the second substrate to contact the first substrate to maintain a gap between the first substrate and the second substrate; and a second column spacer formed on the second substrate on an area of the second substrate corresponding to the contact hole on the first substrate. The second column spacer is separated from the first substrate by a predetermined distance.

REFERENCES:
patent: 7423717 (2008-09-01), Kadotani
patent: 2004/0189928 (2004-09-01), Yang et al.
patent: 2004/0223109 (2004-11-01), Taniguchi et al.
patent: 2005/0088606 (2005-04-01), Ashizawa et al.
patent: 2006/0285060 (2006-12-01), Misaki et al.
patent: 2007/0002265 (2007-01-01), Kwak et al.

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