Liquid crystal display
AssigneeChi Mei Optoelectronics Corp.
InventorTsutomu Yamada
Life of this patent
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Abstract
A liquid crystal display device comprising: a first substrate and a second substrate processed for vertical alignment; a liquid crystal having a negative dielectric constant anisotropy and being sandwiched between the first and second substrates; a plurality of color filters on the first substrate, each of the color filters having at least a first depression formed therein; a common electrode on the color filters, the common electrode having a plurality of second depressions corresponding to the first depressions of the color filters; and a dielectric material filled into the second depressions of the common electrode, the dielectric material having a dielectric constant smaller than the dielectric constant of the liquid crystal.
Claims19
A liquid crystal display device, comprising:
- a first substrate and a second substrate processed for vertical alignment;
- a liquid crystal having a negative dielectric constant anisotropy and being sandwiched between the first and second substrates;
- a plurality of color filters on the first substrate, each of the color filters having at least a first depression formed therein;
- a common electrode on the color filters, the common electrode having a plurality of second depressions corresponding to the first depressions of the color filters;
- and
- a dielectric material filled into the second depressions of the common electrode, the dielectric material having a dielectric constant smaller than the dielectric constant of the liquid crystal.
A liquid crystal display device comprising:
- a first substrate and a second substrate processed for vertical alignment;
- a liquid crystal having a negative dielectric constant anisotropy and being sandwiched between the first and second substrates;
- a plurality of color filters on the first substrate, each of the color filters having at least a first depression formed therein, each of the first depressions extending in a direction, the first depressions being arranged in parallel to one another with a predetermined pitch among them;
- a common electrode on the color filter layer, the common electrode having a plurality of second depressions corresponding to the first depressions of the color filter layer;
- a dielectric material filled into the second depressions of the common electrode, the dielectric material having a dielectric constant smaller than the dielectric constant of the liquid crystal;
- and
- an array of protrusions or slits provided on the second substrate, each extending in the direction, the protrusions, depressions or slits being arranged in parallel to one another with the predetermined pitch among them.
A method of manufacturing a liquid crystal display device comprising the steps of:
- providing a first substrate and a second substrate;
- forming a liquid crystal having a negative dielectric constant anisotropy between the first and second substrates;
- forming color filters on the first substrate, each of the color filters having at least a first depression formed therein;
- forming a common electrode on the color filters, the common electrode having a second depressions corresponding to the first depressions of the color filter layer;
- forming photodefined spacers on the first substrate, the material of the spacers also filling into the second depressions of the common electrode, the material of the spacers having a dielectric constant smaller than the dielectric constant of the liquid crystal;
- and
- forming a vertical alignment layer on each of the substrates.
A method of manufacturing a liquid crystal display device comprising the steps of:
- providing a first substrate and a second substrate;
- forming a liquid crystal having a negative dielectric constant anisotropy between the first and second substrates;
- forming color filters on the first substrate, each of the color filters having at least a first depression formed therein;
- forming a common electrode on the color filters, the common electrode having a second depressions corresponding to the first depressions of the color filter layer;
- and
- forming a vertical alignment film on each of the substrates, the material of the vertical alignment film also filling into the second depressions of the common electrode to obtain a substantially flat surface level with the surface of the first substrate, the material of the vertical alignment film having a dielectric constant smaller than the dielectric constant of the liquid crystal.
Dependencies are inferred from the claim text.