Active matrix liquid crystal display panel
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Accused Products
Abstract
An active matrix liquid crystal display panel by which a good display characteristic can be obtained without suffering from gradation reversal over a wide visibility angle range. A liquid crystal layer 4 is formed such that the thickness-thereof varies in accordance with transmission wavelengths of color layers 6, 7 and 8 so that a very good display which does not exhibit any coloring in whichever direction it is viewed may be obtained.
An active matrix substrate A includes a plurality of opposing electrodes 2, a plurality of pixel electrodes 3 parallel to the opposing electrodes 2, a thin film transistor, and an orientation film 23 all formed on a glass substrate 10. A color filter substrate C includes an orientation film 56 provided on one surface of another glass substrate 10 and an optical compensation layer 35 provided on the other surface of the glass substrate 10 and formed from a plastic film. The two substrates are disposed such that the orientation films thereof oppose each other, and polarization plates 34 and 5 are disposed on the outer sides of the two substrates, and a liquid crystal layer 4 having a positive refractive index anisotropy is provided between the orientation films 23. The optical compensation layer 35 has a negative one axial refractive index anisotropy and can cancel a retardation produced in the liquid crystal layer 4 thereby to suppress white floating of a black display portion.
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Citations
20 Claims
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1-15. -15. (canceled)
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16. An active matrix liquid crystal display panel, comprising:
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a plurality of scanning lines and a plurality of signal lines disposed in an intersecting relationship with each other like gratings on one of a pair of transparent insulating substrates, a plurality of active elements individually provided in the proximity of intersecting points of said scanning lines and said signal lines, a plurality of pixel electrodes connected to said active elements, a plurality of opposing electrodes disposed corresponding to said pixel electrodes, a voltage being applied between said pixel electrodes and said opposing electrodes, a liquid crystal layer disposed between the one transparent insulating substrate and the other transparent insulating substrate, a pair of polarizing plates disposed on the outer sides of said transparent insulating substrates, and a mechanism for controlling a display with an electric field substantially parallel to said liquid crystal layer; and
an optical compensation layer having a negative refractive index anisotropy in a one axis direction, a projection of the anisotropic axis of said optical compensation layer on a plane of one of said substrates being parallel to at least one of polarization axes of said two polarizing plates, said optical compensation layer being disposed at least between the one transparent insulating substrate and a corresponding one of said polarizing plates. - View Dependent Claims (17, 18, 19, 20)
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Specification