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US 7,605,874 B2Granted
Liquid crystal display device and method of manufacturing the same
AssigneesFujitsu Limited, Au Optronics Corporation
InventorsTakahiro Sasaki, Kazuya Ueda, Yukiko Toyooka, Jin Hirosawa, Hideaki Tsuda
Life of this patent
Estimating the term…
Abstract
A polyimide film is formed in only the peripheries of picture elements defined by gate bus lines and data bus lines. The areas where the polyimide film is formed have higher thresholds of transmittance-voltage (T-V) characteristics than the areas without polyimide films. Discolor can be suppressed by providing a plurality of areas having different T-V characteristics within each picture element as described above.
Claims5
A liquid crystal display device comprising:
- first and second substrates placed to be opposed to each other;
- liquid crystal filling a space between the first and second substrates;
- a plurality of picture element electrodes for controlling tilt angles of liquid crystal molecules in accordance with applied voltages for respective picture element areas, the plurality of picture element electrodes being formed on any one of the first and second substrates;
- and
- an opposing electrode placed to be opposed to the plurality of picture element electrodes,
- wherein a threshold adjustment dielectric film, which is formed on an entire periphery of the picture element area to open in an area corresponding to the center of the picture element area, is formed for each of the picture element areas on at least one of the first and second substrates, so that thresholds of transmittance-voltage characteristics in peripheries of the picture element areas are higher than those in centers of the picture element areas.
3 more elements
Dependencies are inferred from the claim text.