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US RE47,725 E1Granted
Display apparatus and liquid crystal display device
AssigneeCheng Mei Materials Technology Corporation
InventorsWang-Yang Li, Ting-I Wu
Life of this patent
Estimating the term…
Abstract
A display apparatus and a liquid crystal display device are provided. The display apparatus comprises a display device for displaying an image and a diffractive optical element. The diffractive optical element comprises pixel unit regions. Each of the pixel unit regions has a long pixel side and a short pixel side adjacent to each other. The diffractive optical element is disposed on a light emitting side of the display device and comprises first grating regions and second grating regions. The first grating regions have a first diffraction grating. The second grating regions have a second diffraction grating. An azimuth angle of the first diffraction grating is different from an azimuth angle of the second diffraction grating.
Claims80
A display apparatus, comprising:
- a liquid crystal display device comprising:;
- a backlight module;
- and
- a liquid crystal panel comprising a first substrate, a second substrate and a liquid crystal layer, wherein the liquid crystal layer is disposed between the first substrate and the second substrate;
- a first polarizer disposed on the first substrate display device and having a polarizing direction;
- a second polarizer disposed between the second substrate and the backlight module, wherein polarizing directions of the first polarizer and the second polarizer have different azimuth angles;
- and
- a diffractive optical element disposed on a light emitting side of the first polarizer and having a first diffraction grating and a second diffraction grating, wherein grating directions of the first diffraction grating and the second diffraction grating have different azimuth angles, an included angle from the grating direction of the first diffraction grating to the polarizing direction of the first polarizer is 0±20 degrees, and an included angle from the grating direction of the second diffraction grating to the polarizing direction of the first polarizer is 90±20 degrees.
5 more elements
A display apparatus, comprising:
- a liquid crystal display device for displaying an image and comprising:
- a backlight module;
- and
- a liquid crystal panel disposed on the backlight module and comprising:
- a first substrate;
- a first alignment film disposed on the first substrate;
- a second substrate;
- a second alignment film disposed on the second substrate, wherein aligning directions of the first alignment film and the second alignment film have different azimuth angles;
- and
- a liquid crystal layer disposed between the first alignment film and the second alignment film;
- and
- a diffractive optical element disposed on a light emitting side of the liquid crystal display device and comprising a first diffraction grating and a second diffraction grating, wherein an azimuth angle of a grating direction of the first diffraction grating is different from an azimuth angle of a grating direction of the second diffraction grating, an included angle from the grating direction of the first diffraction grating to the aligning direction of the first alignment film is 90±20 degrees, an included angle from the grating direction of the second diffraction grating to the aligning direction of the first alignment film is 0±20 degrees.
9 more elements
A liquid crystal display device for displaying an image, comprising:
- a liquid crystal panel comprising:
- a first substrate;
- a second substrate;
- and
- a liquid crystal layer disposed between the first substrate and the second substrate, wherein the liquid crystal layer comprises liquid crystal molecules, at least one of the liquid crystal molecules adjacent to the first substrate has a first liquid crystal tilt direction, at least one of the liquid crystal molecules adjacent to the second substrate has a second liquid crystal tilt direction, an azimuth angle of the first liquid crystal tilt direction is different from an azimuth angle of the second liquid crystal tilt direction;
- and
- a diffractive optical element disposed on a light emitting side of the liquid crystal panel and comprising a first diffraction grating and a second diffraction grating, wherein an azimuth angle of a grating direction of the first diffraction grating is different from an azimuth angle of a grating direction of the second diffraction grating, an included angle from the grating direction of the first diffraction grating to the first liquid crystal tilt direction is 90±20 degrees, an included angle from the grating direction of the second diffraction grating to the first liquid crystal tilt direction is 0±20 degrees.
4 more elements
A display apparatus, comprising:
- a display device for displaying an image;
- and
- a diffractive optical element disposed on a light emitting side of the display device and having a first diffraction grating and a second diffraction grating, wherein grating directions of the first diffraction grating and the second diffraction grating have different azimuth angles, and the first diffraction grating and the second diffraction grating generate an intensity ratio of a total zero order diffraction light to a total non-zero order diffraction light lower than 100.
A display apparatus, comprising:
- a display device for displaying an image;
- and
- a diffractive optical element disposed on a light emitting side of the display device, comprising:
- a first diffraction grating, which generates an intensity ratio of a total zero order diffraction light to the light having an emitting direction different from an incident direction by a deflection angle bigger than 15 degrees lower than 100.
1 more element
A display apparatus, comprising:
- a display device for displaying an image;
- and
- an optical film disposed on a light emitting side of the display device, wherein the optical film is a stacked structure comprised by:
- a first diffractive optical element, comprising a first diffraction grating, wherein the first diffraction grating generates an intensity ratio of a total zero order diffraction light to the light having an emitting direction different from an incident direction by a deflection angle bigger than 15 degrees lower than 100;
- and
- a second diffractive optical element, comprising a second diffraction grating.
3 more elements
A display apparatus, comprising:
- a display device for displaying an image;
- and
- a diffractive optical element disposed on a light emitting side of the display device, comprising:
- a first diffraction grating;
- and
- a second diffraction grating, wherein the first diffraction grating generates an intensity ratio of a total zero order diffraction light to the light having an emitting direction different from an incident direction by a deflection angle bigger than 15 degrees lower than 100 and the first diffraction grating and the second diffraction grating are overlapping.
3 more elements
Dependencies are inferred from the claim text.