Liquid crystal display device
AssigneeJapan Display Inc.
InventorsYasushi Tomioka, Noboru Kunimatsu, Hidehiro Sonoda, Yasuo Imanishi, Koichi Igeta
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Abstract
In a liquid crystal display device, a TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode. And an opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole. Accordingly, misalignment between the TFT substrate and the opposite substrate is suppressed, occurrence of uneven brightness due to misalignment between pixel regions and a bright spot caused by shaving of an orientation film is prevented, and a favorable image is obtained.
Claims15
A liquid crystal display device, comprising:
- a thin-film transistor (TFT) substrate in which a pixel electrode, and a TFT are formed in a matrix;
- an opposite substrate in which a color filter is formed at a position corresponding to a position of the pixel electrode and that is arranged with a predetermined gap with the TFT substrate;
- and
- a liquid crystal retained in the gap;
- wherein
- the TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode;
- the opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole;
- and
- the number of the columnar projection is less than the number of the columnar spacer.
A liquid crystal display device comprising:
- a thin-film transistor (TFT) substrate in which a pixel electrode, and a TFT are formed in a matrix;
- an opposite substrate in which a color filter is formed at a position corresponding to a position of the pixel electrode and that is arranged with a predetermined gap with the TFT substrate;
- and
- a liquid crystal retained in the gap;
- wherein
- the TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode;
- the opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole;
- and
- density of the columnar projection is higher at a peripheral area of a liquid crystal panel than at a center region of the liquid crystal panel.
A liquid crystal display device comprising:
- a thin-film transistor (TFT) substrate in which a pixel electrode, and a TFT are formed in a matrix;
- an opposite substrate in which a color filter is formed at a position corresponding to a position of the pixel electrode and that is arranged with a predetermined gap with the TFT substrate;
- and
- a liquid crystal retained in the gap;
- wherein
- the TFT substrate retains a contact hole that is formed in a passivation film, and is for connecting the TFT and the pixel electrode;
- the opposite substrate retains a columnar spacer for ensuring a cell gap, and a columnar projection for misalignment prevention formed at a position corresponding to a position of the contact hole;
- and
- an interval between the columnar projections is larger than an interval between the columnar spacers.
Dependencies are inferred from the claim text.