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US 2003/0193639 A1Published application
Liquid crystal display device and method of manufacturing the same
AssigneeAdvanced Display Inc.
InventorsShingo Nagano, Yuichi Masutani
Life of this patent
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Abstract
A liquid crystal display device of so-called an In-Plane Switching mode in which an electric field substantially parallel to substrates is applied to a liquid crystal layer by applying a voltage between a pixel electrode and a common electrode is disclosed. In the liquid crystal display device, a source line is overlapped with a part of a common electrode with an insulation film interposed therebetween. The insulation film has a plurality of layers of insulation films.
Claims15
A liquid crystal display device comprising:
- a pair of substrates placed oppositely at a certain distance away from each other;
- a liquid crystal layer placed between the substrates;
- a gate line and a source line formed on one of the substrates, the gate line and the source line crossing each other;
- a switching element connected to the gate line and the source line;
- a comb-shaped pixel electrode connected to the switching element, the pixel electrode having a plurality of electrodes substantially parallel to the source line;
- and
- a comb-shaped common electrode connected to the switching element, the common electrode having a plurality of electrodes parallel to and alternating with the plurality of electrodes of the pixel electrode;
- wherein an electric field substantially parallel to the substrates is applied to the liquid crystal layer by a voltage applied across the pixel electrode and the common electrode, and the source line is overlapped with a part of the common electrode with an insulation film interposed therebetween, the insulation film having a plurality of layers of insulation film.
5 more elements
A liquid crystal display device comprising:
- a pair of substrates placed oppositely at a certain distance away from each other;
- a liquid crystal layer placed between the substrates;
- a gate line and a source line formed on one of the substrates, the gate line and the source line crossing each other;
- a switching element connected to the gate line and the source line;
- a comb-shaped pixel electrode connected to the switching element, the pixel electrode having a plurality of electrodes parallel to the source line;
- and
- a comb-shaped common electrode connected to the switching element, the common electrode having a plurality of electrodes parallel to and alternating with the plurality of electrodes of the pixel electrode;
- wherein an electric field substantially parallel to the substrates is applied to the liquid crystal layer by a voltage applied across the pixel electrode and the common electrode, and the source line is overlapped with a part of the common electrode with an insulation film interposed therebetween, and the common electrode is overlapped with the source line in an area except the middle of a pixel, while not overlapped with the source line at the middle of the pixel.
5 more elements
A liquid crystal display device comprising:
- a pair of substrates placed oppositely at a certain distance away from each other;
- a liquid crystal layer placed between the substrates;
- a gate line and a source line formed on one of the substrates, the gate line and the source line crossing each other;
- a switching element connected to the gate line and the source line;
- a comb-shaped pixel electrode connected to the switching element, the pixel electrode having a plurality of electrodes parallel to the source line;
- and
- a comb-shaped common electrode connected to the switching element, the common electrode having a plurality of electrodes parallel to and alternating with the plurality of electrodes of the pixel electrode;
- wherein an electric field substantially parallel to the substrates is applied to the liquid crystal layer by a voltage applied across the pixel electrode and the common electrode, and a position where at least a part of side surfaces of the source line and a semiconductor layer of the switching element are aligned in a vertical direction is not on an area where the source line is overlapped with the common electrode.
5 more elements
A method of manufacturing a liquid crystal display device having a pair of substrates placed oppositely at a certain distance away from each other;
- a liquid crystal layer placed between the substrates;
- a gate line and a source line formed on one of the substrates, the gate line and the source line crossing each other;
- a switching element connected to the gate line and the source line;
- a comb-shaped pixel electrode connected to the switching element, the pixel electrode having a plurality of electrodes parallel to the source line;
- and a comb-shaped common electrode connected to the switching element, the common electrode having a plurality of electrodes parallel to and alternating with the plurality of electrodes of the pixel electrode;
- wherein an electric field substantially parallel to the substrates is applied to the liquid crystal layer by a voltage applied across the pixel electrode and the common electrode, comprising:
- a step of forming the source line;
- a step of forming a plurality of insulation films by a plurality of film deposition processes;
- and
- a step of forming the common electrode overlapped with the source line with the insulation films interposed therebetween.
7 more elements
Dependencies are inferred from the claim text.