Liquid crystal display device having column spacer receiving members formed of the same material as a material of one of the pair of electrodes for applying an electric field to the liquid crystal material
First Claim
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1. A liquid crystal display device, comprising:
- a first substrate;
a second substrate which is opposed to the first substrate;
a liquid crystal material which is placed between the first substrate and the second substrate;
a plurality of column spacers and a first alignment film which are formed above the first substrate;
an insulating layer which is formed on the second substrate and a second alignment film which is formed on the insulating layer; and
column spacer receiving members which are provided between the insulating layer and the second alignment film in places opposed to the plurality of column spacers, without any layer interposed between the second alignment film and the column spacer receiving members, the column spacer receiving members each being comprised of a material different from both of a material comprising the insulating layer and a material comprising the second alignment film, the column spacer receiving members having rims that are formed in contact with the second alignment film,wherein a thickness of the second alignment film in places above the column spacer receiving members is ⅓
or less of a thickness of the second alignment film in places in which the second alignment film is formed directly on the insulating layer,wherein each of the plurality of column spacers has a substantially flat top facing toward an upper surface of a corresponding one of the plurality of column spacer receiving members which the column spacer is opposed to, and wherein planar dimensions of the substantially flat top of each of the column spacers overlap with and are substantially included entirely within the planar dimensions of the upper surface of the corresponding one of the plurality of column spacer receiving members which it faces a pair of electrodes for applying an electric field to the liquid crystal material, wherein at least one of the pair of electrodes is formed between the insulating layer and the second alignment film, and wherein the column spacer receiving members are each comprised of the same material as a material of the at least one of the pair of electrodes formed between the insulating layer and the second alignment film.
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Abstract
Provided is a liquid crystal display device including: a plurality of column spacers and a first alignment film which are formed above the first substrate; an insulating layer which is formed on the second substrate and a second alignment film which is formed on the insulating layer; and column spacer receiving members which are provided between the insulating layer and the second alignment film in places opposed to the plurality of column spacers, the column spacer receiving members each being made of a material different from both of a material of the insulating layer and a material of the second alignment film, in which a thickness of the second alignment film in places above the column spacer receiving members is ⅓ or less of a thickness of the second alignment film in places in which the second alignment film is formed directly on the insulating layer.
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Citations
22 Claims
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1. A liquid crystal display device, comprising:
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a first substrate; a second substrate which is opposed to the first substrate; a liquid crystal material which is placed between the first substrate and the second substrate; a plurality of column spacers and a first alignment film which are formed above the first substrate; an insulating layer which is formed on the second substrate and a second alignment film which is formed on the insulating layer; and column spacer receiving members which are provided between the insulating layer and the second alignment film in places opposed to the plurality of column spacers, without any layer interposed between the second alignment film and the column spacer receiving members, the column spacer receiving members each being comprised of a material different from both of a material comprising the insulating layer and a material comprising the second alignment film, the column spacer receiving members having rims that are formed in contact with the second alignment film, wherein a thickness of the second alignment film in places above the column spacer receiving members is ⅓
or less of a thickness of the second alignment film in places in which the second alignment film is formed directly on the insulating layer,wherein each of the plurality of column spacers has a substantially flat top facing toward an upper surface of a corresponding one of the plurality of column spacer receiving members which the column spacer is opposed to, and wherein planar dimensions of the substantially flat top of each of the column spacers overlap with and are substantially included entirely within the planar dimensions of the upper surface of the corresponding one of the plurality of column spacer receiving members which it faces a pair of electrodes for applying an electric field to the liquid crystal material, wherein at least one of the pair of electrodes is formed between the insulating layer and the second alignment film, and wherein the column spacer receiving members are each comprised of the same material as a material of the at least one of the pair of electrodes formed between the insulating layer and the second alignment film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A liquid crystal display device, comprising:
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a first substrate; a second substrate which is opposed to the first substrate; a liquid crystal material which is placed between the first substrate and the second substrate; a plurality of column spacers and a first alignment film which are formed above the first substrate; an insulating layer which is formed on the second substrate and a second alignment film which is formed on the insulating layer, the second alignment film having openings formed therein in places opposed to the plurality of column spacers; and column spacer receiving members which are formed in the openings of the second alignment film, the column spacer receiving members each being comprised of a material different from both of a material comprising the insulating layer and a material comprising the second alignment film, the column spacer receiving members having rims that are formed in contact with the second alignment film, wherein each of the plurality of column spacers has a substantially flat top facing toward an upper surface of a corresponding one of the plurality of column spacer receiving members which the column spacer is opposed to, and wherein planar dimensions of the substantially flat top of each of the column spacers overlap with and are substantially included entirely within the planar dimensions of the upper surface of the corresponding one of the plurality of column spacer receiving members which it faces a pair of electrodes for applying an electric field to the liquid crystal material, wherein at least one of the pair of electrodes is formed between the insulating layer and the second alignment film, and wherein the column spacer receiving members are each comprised of the same material as a material of the at least one of the pair of electrodes formed between the insulating layer and the second alignment film. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification
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Current AssigneePanasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
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Original AssigneeHitachi Displays Limited (Japan Display Incorporated), Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
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InventorsMatsumori, Masaki, Tomioka, Yasushi, Araya, Kotaro
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Primary Examiner(s)Nguyen, Lauren
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Application NumberUS12/640,333Publication NumberTime in Patent Office1,090 DaysField of Search349/123, 349/141, 349155-156US Class Current349/156CPC Class CodesG02F 1/13394 spacers regularly patterned...G02F 1/134363 for applying an electric fi...
