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US 2007/0177068 A1Published application
Liquid crystal display device and method for fabricating thereof
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHongyong Zhang, Takeshi Fukunaga
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Abstract
To provide a technology for fabricating a high image quality liquid crystal display device, a set range of a cell gap for holding a liquid crystal layer is limited in accordance with a distance of a pixel pitch in which specifically, the cell gap is set to be a distance of one tenth of the pixel pitch, whereby the high image quality liquid crystal display device with no occurrence of image display failure caused by disturbances of an electric field such as disclination, can be realized.
Claims14
A display device comprising:
- a thin film transistor over a substrate;
- an interlayer insulating film over the thin film transistor;
- (1) a black matrix, for hiding a disclination which is caused by a first stepped difference, over the interlayer insulating film;
- and
- a pixel electrode over the interlayer insulating film,
- (2) wherein a disclination caused by a first stepped difference is hidden by the black matrix, and
- wherein a second stepped difference of the pixel electrode formed over a circumference of the drain electrode is 0.3 μm or less.
4 more elements
A display device comprising:
- a thin film transistor over a substrate;
- an interlayer insulating film over the thin film transistor;
- a contact portion;
- and
- a pixel electrode over the interlayer insulating film,
- wherein the thin film transistor is electrically connected to the pixel electrode through the contact portion, and
- wherein a stepped difference formed in a vicinity of the contact portion is 0.3 μm or less.
4 more elements
Dependencies are inferred from the claim text.