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US 7,742,135 B2Granted
Liquid crystal display device capable of preventing reflectance and white balance value from shifting
AssigneeToshiba Matsushita Display Technology Co., Ltd.
InventorsKeiji Tago, Jin Hirosawa
Life of this patent
Estimating the term…
Abstract
In the liquid crystal display device, a transparent area is formed in a part of the color filter layer which opposes the reflective electrode. A part of the transparent area opposes a part of the structure formed to make liquid crystal molecules incline. The structure and the transparent area are configured to keep a ratio constant, the ratio being a ratio between a size of the transparent area's part opposing the structure's part and a size of the rest of the transparent area.
Claims33
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area, and
- each transparent area crosses the corresponding opposing structure.
9 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area, and
- each transparent area crosses the corresponding opposing structure to keep the ratio constant if a relative position between the structure and the transparent area varies.
9 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area,
- each structure is a protuberance, and
- each of the protuberance and the transparent area is made in a form of a rectangle.
10 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area,
- each transparent area crosses the corresponding opposing structure, and
- each structure is a protuberance.
10 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area,
- each transparent area crosses the corresponding opposing structure to keep the ratio constant if a relative position between the structure and the transparent area varies, and
- each structure is a protuberance.
10 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area,
- each transparent area crosses the corresponding opposing structure, and
- each structure forms a slit where the reflective electrode or the part of the opposing electrode is removed partially.
10 more elements
A liquid crystal display device comprising:
- an array substrate and an opposing substrate;
- a liquid crystal layer formed between the array substrate and the opposing substrate;
- transmissive electrodes formed in the array substrate;
- reflective electrodes formed in the array substrate;
- a color filter layer formed in the opposing substrate;
- an opposing electrode formed on the color filter layer;
- transparent areas which do not add colors to light, each transparent area being formed in a part of the color filter layer which opposes a corresponding reflective electrode;
- and
- structures configured to make liquid crystal molecules in the liquid crystal layer incline, each structure being formed either on a reflective electrode or on a corresponding part of the opposing electrode which opposes the reflective electrode, wherein
- a part of each transparent area opposes a part of a corresponding structure,
- each transparent area and each corresponding opposing structure are configured to keep a ratio constant, the ratio being a ratio between a size of each transparent area opposing the corresponding structure area and a size of the rest of the transparent area,
- each transparent area crosses the corresponding opposing structure to keep the ratio constant if a relative position between the structure and the transparent area varies, and
- each structure forms a slit where the reflective electrode or the part of the opposing electrode is removed partially.
10 more elements
Dependencies are inferred from the claim text.