Liquid crystal display apparatus and fabrication method thereof
AssigneeKabushiki Kaisha Toshiba
InventorsTakafumi Nakamura, Takeru Hojo, Tomohiro Miura
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Abstract
A liquid crystal display apparatus for controlling light transmittance corresponding to various defective pixel modes such as luminance point defects and a fabrication method thereof are disclosed. The orientation film corresponding to a defective display pixel has protrusion portions that are larger than the orientation film corresponding to each of the normal display pixels. The height and pitches of the protrusion portions are preferably 0.1 .mu.m or more and 10 .mu.m or less, respectively.
Claims25
A fabrication method of a liquid crystal display apparatus having a first electrode substrate formed of a first substrate having at least a first electrode and a first orientation film, a second electrode substrate formed of a second substrate having at least a second electrode and a second orientation film, the second electrode being opposed to the first electrode, a liquid crystal layer disposed between the first electrode substrate and the second electrode substrate, the liquid crystal layer containing liquid crystal molecules aligned in a predetermined direction corresponding to alignment characteristics of the first orientation film and the second orientation film and having a first alignment state, and a plurality of display pixels having respective light transmittances that vary corresponding to a potential between the first electrode and the second electrode, comprising the steps of:
- defecting a defective display pixel among the display pixels;
- and
- adjusting the light transmittance of the defective display pixel by radiating the defective display pixel with an energy beam so as to produce a second alignment state in the liquid crystal layer different from the first alignment state.
A fabrication method of a liquid crystal display apparatus having a first electrode substrate formed of a first substrate having at least a first electrode and a first orientation film, a second electrode substrate formed of a second substrate having at least a second electrode and a second orientation film, the second electrode being opposed to the first electrode, a liquid crystal layer disposed between the first electrode substrate and the second electrode substrate, the liquid crystal layer containing liquid crystal molecules aligned in the predetermined direction corresponding to alignment characteristics of the first orientation film and second orientation film, and a plurality of display pixels with light transmittance that varies corresponding to a potential between the first electrode and the second electrode, comprising the steps of:
- defecting a defective display pixel among the display pixels;
- and
- adjusting the light transmittance of the defective display pixel by radating an energy beam onto the defective display pixel with a focal point at an upper or a lower position outside the first electrode substrate and the second electrode substrate.
A fabrication method of a liquid crystal display apparatus having a first electrode substrate formed of a first substrate having at least a first electrode and a first orientation film, a second electrode substrate formed of a second substrate having at least a second electrode and a second orientation film, the second electrode being opposed to the first electrode, a liquid crystal layer disposed between the first electrode substrate and the second electrode substrate, the liquid crystal layer containing liquid crystal molecules aligned in a predetermined direction corresponding to alignment characteristics of the first orientation film and the second orientation film, and a plurality of display pixels with light transmittance that varies corresponding to a potential between the first electrode and the second electrode, comprising the steps of:
- defecting a defective display pixel among the display pixels;
- and
- scanning pulse energy, having a beam spot area 1/25 times or less an area of one of the display pixels, onto the defective display pixel so as to adjust the light transmittance of the defective display pixel.
A liquid crystal display apparatus having a plurality of display pixels including a normal display pixel and a defective display pixel, each of the display pixels having a first electrode and a second electrode, and a liquid crystal layer containing liquid crystal molecules disposed between the first and second electrodes, comprising:
- a first orientation film formed on the first electrode of each of the display pixels so as to align the liquid crystal molecules in a first predetermined direction;
- and
- a second orientation film formed on the second electrode of each of the display pixels so as to align the liquid crystal molecules in a second predetermined direction,
- wherein the first orientation film of the defective display pixel has protrusion portions larger than protrusion portions of the first orientation film of the normal display pixel.
A liquid crystal display apparatus having a plurality of display pixels including a normal display pixel and a defective display pixel, each of the display pixels having a pixel electrode, an opposed electrode, and a liquid crystal layer disposed between the pixel electrode and the opposed electrode, the liquid crystal layer containing liquid crystal molecules, comprising:
- a first orientation film formed on the pixel electrode of each of the display pixels so as to align the liquid crystal molecules in a first predetermined direction;
- and
- a second orientation film formed on the opposed electrode of each of the display pixels so as to align the liquid crystal molecules in a second predetermined direction,
- wherein the first orientation film of the defective display pixel has protrusion portions larger than protrusion portions of the first orientation film of the normal display pixel of said pixels.
A liquid crystal display apparatus having a plurality of display pixels including a normal display pixel and a defective display pixel, each of the display pixels having a pixel electrode, an opposed electrode, and a liquid crystal layer disposed between the pixel electrode and the opposed electrode, the liquid crystal layer containing liquid crystal molecules, comprising:
- a first orientation film formed on the pixel electrode of each of the display pixels so as to align the liquid crystal molecules in a first predetermined direction;
- and
- a second orientation film formed on the opposed electrode of each of the display pixels so as to align the liquid crystal molecules in a second predetermined direction,
- wherein the second orientation film of the defective display pixel has protrusion portions larger than protrusion portions of the second orientation film of the normal display pixel.
The liquid crystal display apparatus having a plurality of display pixels, comprising:
- a liquid crystal layer containing liquid crystal molecules;
- a first electrode substrate having a first electrode region and a first orientation film formed on the first electrode region of each of the display pixels, the first orientation film of each of the display pixels having a first alignment surface region contacting one side of the liquid crystal layer so as to align the liquid crystal molecules in a first predetermined direction;
- and
- a second electrode substrate contacting an opposed side of the liquid crystal layer, and having a second electrode region and a second orientation film formed on the second electrode region for each of the display pixels, the second orientation film of each of the display pixels having a second alignment surface region contacting the liquid crystal layer so as to align the liquid crystal molecules in a second predetermined direction,
- wherein the first alignment surface region of at least one of the display pixels has protrusion portions larger than protrusion portions of the first alignment surface region of another one of the display pixels.
Dependencies are inferred from the claim text.