Liquid crystal display device
First Claim
1. A liquid crystal display device comprising:
- a pair of substrates, at least one of said substrates being transparent;
a liquid crystal layer interposed between said pair of substrates;
pixel electrodes and common electrodes and active elements arranged on at least one substrate between said pair of substrates, liquid crystal of said liquid crystal layer being controlled to perform display by applying a voltage between said pixel electrode and said common electrode;
an alignment layer formed on a surface in contact with said liquid crystal layer of each of said pair of substrates; and
an insulation film having at least one layer is disposed between said alignment layer in a side of the substrate having said electrodes formed thereon and an electrode which is closer to said alignment layer between said pixel electrode and said common electrode;
wherein a thickness T of said insulation film interposed between said alignment layer in the side of the substrate having said electrodes formed thereon and the electrode which is closer to said alignment layer between said pixel electrode and said common electrode is larger than a value of one fourth of an interval L between said pixel electrode and said common electrode.
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Accused Products
Abstract
A liquid crystal display device has a pair of substrates, at least one of the substrates being transparent; a liquid crystal layer interposed between the pair of substrates; and pixel electrodes and common electrodes and active elements arranged on at least one substrate between the pair of substrates, wherein a pair of alignment layers are made of an organic polymer of polyamic acid group of polyamide ester group having a relative imidization ration above 60%; or at least one layer of an insulation film is interposed between the alignment layer in a side of the substrate having the group of electrodes formed thereon, and the pixel electrode and the common electrode disposed under the alignment layer to prevent occurrence of the sticking image and the after image by flattening the electrode portions to moderate the electric field concentration.
30 Citations
27 Claims
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1. A liquid crystal display device comprising:
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a pair of substrates, at least one of said substrates being transparent;
a liquid crystal layer interposed between said pair of substrates;
pixel electrodes and common electrodes and active elements arranged on at least one substrate between said pair of substrates, liquid crystal of said liquid crystal layer being controlled to perform display by applying a voltage between said pixel electrode and said common electrode;
an alignment layer formed on a surface in contact with said liquid crystal layer of each of said pair of substrates; and
an insulation film having at least one layer is disposed between said alignment layer in a side of the substrate having said electrodes formed thereon and an electrode which is closer to said alignment layer between said pixel electrode and said common electrode;
wherein a thickness T of said insulation film interposed between said alignment layer in the side of the substrate having said electrodes formed thereon and the electrode which is closer to said alignment layer between said pixel electrode and said common electrode is larger than a value of one fourth of an interval L between said pixel electrode and said common electrode. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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2. A liquid crystal display device comprising:
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a pair of substrates, at least one of said substrates being transparent;
a liquid crystal layer interposed between said pair of substrates;
pixel electrodes and common electrodes and active elements arranged on at least one substrate between said pair of substrates, liquid crystal of said liquid crystal layer being controlled to perform display by applying a voltage between said pixel electrode and said common electrode; and
an insulation film having at least two layers is disposed between said pixel electrode and said common electrode;
wherein a thickness T of said insulation film which is interposed between an alignment layer in the side of the substrate having said electrodes formed thereon and the electrode which is closer to said alignment layer between said pixel electrode and said common electrode is larger than a value of one fourth of an interval L between said pixel electrode and said common electrode.
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27. A liquid crystal display device comprising:
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a pair of substrates, at least one of said substrates being transparent;
a liquid crystal layer interposed between said pair of substrates;
pixel electrodes and common electrodes and active elements arranged on at least one substrate between said pair of substrates, liquid crystal of said liquid crystal layer being controlled to perform display by applying a voltage between said pixel electrode and said common electrode;
an alignment layer formed on a surface in contact with said liquid crystal layer of each of said pair of substrates; and
an insulation film having at least one layer is disposed between said alignment layer in a side of the substrate having said electrodes formed thereon and an electrode which is closer to said alignment layer between said pixel electrode and said common electrode;
wherein a thickness T of said insulation film interposed between said alignment layer in the side of the substrate having said electrodes formed thereon and the electrode which is closer to said alignment layer between said pixel electrode and said common electrode is larger than a value of one fourth of an interval L between said pixel electrode and said common electrode; and
wherein the level difference on a surface of said alignment layer in contact with the liquid crystal in the side of the substrate on which said pixel electrodes and said common electrodes are formed is smaller than 50 nm.
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Specification