US 6,982,769 B2
Substrate for liquid-crystal display device and fabrication method thereof
Takayuki Ishino, Kagoshima (Japan)
Assigned to NEC LCD Technologies, Ltd., Kanagawa (Japan)
Filed on Aug. 08, 2003, as Appl. No. 10/638,000.
Claims priority of application No. 2002-232542 (JP), filed on Aug. 09, 2002.
Prior Publication US 2004/0046912 A1, Mar. 11, 2004
Int. Cl. G02F 1/136 (2006.01)
U.S. Cl. 349—43 19 Claims
OG exemplary drawing
 
1. A substrate for a LCD device comprising:
a transparent plate;
switching elements for respective pixels, formed on the plate;
protrusions for the respective pixels, formed on the plate in such a way as to protrude to a vicinity of an outermost surface of the substrate;
each of the protrusions raising an electrode of a corresponding one of the switching elements to the vicinity of the outermost surface in a corresponding one of the pixels;
a planarization layer formed in such a way as to cover the switching elements, the protrusions, and the electrodes of the elements in all the pixels, a surface of the planarization layer forming the outermost surface, the planarization layer having at least one contact hole formed over each corresponding protrusion, partially exposing the electrodes;
pixel electrodes for the respective pixels, formed on the outermost surface; and
each of the pixel electrodes being contacted with a corresponding one of the electrodes of the switching elements in the vicinity of the outermost surface.