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US5477356A
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Injection method for a liquid crystal display with a single orientation surface
Assignee: Stanley Electric Co Ltd
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Filing: 1993-02-25
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Granted: 1995-12-19
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Expires: 2013-02-25
Abstract
Abstract A method of manufacturing a liquid crystal display, includes the steps of: forming thin film transistors TFTs, pixel electrodes connected to the TFTs, and electrode lines connected to the TFTs, respectively on a surface of a first substrate; forming a common electrode on a surface of a second substrate which is not subjected to any orientation process, the first substrate having no orientation means; forming an orientation film on the common electrode on the second substrate and performing a rubbing process only on the orientation film on the second substrate wherein the first substrate is not subjected to a rubbing process; disposing the first and second substrates to face each other and to be spaced apart from each other by a predetermined distance, and injecting a nematic liquid crystal material that is in an isotropic phase thereof, which is heated to at least a phase transition temperature that provides an isotropic phase of said liquid crystal material, said liquid crystal material being injected in between the first and second substrates; and gradually cooling the heated liquid crystal material to a temperature at which the isotropic phase changes to a nematic liquid crystal phase. Cooling occurs in a direction from the second substrate toward the first substrate.
Inventors
- 👤 Shunsuke Kobayashi
- 👤 Yasuo Toko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:25
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02F1/133765; G02F1/13378; G02F1/133784; G02F1/136; G02F1/1362; G02F1/136204; G02F1/137; G02F1/139; G02F1/1396
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
185 words
A method of manufacturing a liquid crystal display, comprising the steps of: forming a first electrode structure on a first substrate; forming a second electrode structure on a second substrate; forming an orientation film on said second electrode structure; and then rubbing said orientation film on said second substrate, wherein said first substrate does not have an orientation film; disposing said first substrate and said second substrate to face each other and to be spaced apart from each other by a predetermined distance; and injecting a liquid including a liquid crystal material that is in an isotropic phase thereof between said first and second substrates; said liquid crystal material being brought to said isotropic phase thereof by heating said liquid crystal material at least to a transition temperature thereof; gradually cooling said liquid crystal material until a phase change of said liquid crystal material occurs from the isotropic phase thereof to a nematic liquid crystal phase thereof; and wherein said step of gradually cooling said liquid crystal material, comprises cooling said liquid crystal material in a direction from the second substrate toward said first substrate.
Claim 2
Independent Claim
185 words
A method of manufacturing a liquid crystal display, comprising the steps of: forming a first electrode structure on a first substrate; forming a second electrode structure on a second substrate; forming an orientation film on said second electrode structure; and then rubbing said orientation film on said second substrate, wherein said first substrate does not have an orientation film; disposing said first substrate and said second substrate to face each other and to be spaced apart from each other by a predetermined distance; and injecting a liquid including a liquid crystal material that is in an isotropic phase thereof between said first and second substrates; said liquid crystal material being brought to said isotropic phase thereof by heating said liquid crystal material at least to a transition temperature thereof; gradually cooling said liquid crystal material until a phase change of said liquid crystal material occurs from the isotropic phase thereof to a nematic liquid crystal phase thereof; and wherein said step of gradually cooling said liquid crystal material, comprises cooling said liquid crystal material in a direction from the second substrate toward said first substrate.
Claim 3
Dependent Claim
63 words
A method according to claim 1, wherein said step of forming said first electrode structure on said first substrate includes forming on a surface of said first substrate; a plurality of driving elements; a plurality of pixel elements, each pixel element being connected to one of said driving element; and a plurality of electrode lines respectively connected to one of said driving elements.
Claim 4
Dependent Claim
34 words
A method according to claim 2, wherein said step of forming said second electrode structure on said second substrate includes a step of forming a common electrode on a surface of said second substrate.
Claim 5
Dependent Claim
55 words
A method according to claim 1, wherein: said step of forming said first electrode structure on said first substrate includes: forming segment electrodes on a surface of said first substrate; and said step of forming said second electrode structure on said second substrate includes forming a common electrode on a surface of said second substrate.
Claim 6
Dependent Claim
19 words
A method according to claim 1, wherein said injecting step includes adding chiral molecules to said liquid crystal material.
Claim 7
Independent Claim
246 words
A method of manufacturing a liquid crystal display, comprising the steps of: forming a first electrode structure on a first substrate; forming a second electrode structure on a second substrate; forming an orientation film on said second electrode structure; and then rubbing said orientation film on said second substrate, wherein said first substrate does not have an orientation film; disposing said first substrate and said second substrate to face each other and to be spaced apart from each other by a predetermined distance; injecting a liquid including a liquid crystal material between the first and second substrates; heating the liquid crystal material injected between said first and second substrates to at least a transition temperature of said liquid crystal material so that said liquid crystal material is in an isotropic phase thereof; and gradually cooling said liquid crystal material until a phase change of said liquid crystal material occurs from the isotropic phase thereof to a nematic liquid crystal phase thereof; wherein said step of forming said first electrode structure on said first substrate includes forming on a surface of said first substrate: a plurality of driving elements; a plurality of pixel elements, each pixel element being connected to one of said driving elements; and a plurality of electrode lines respectively connected to one of said driving elements; and wherein said step of gradually cooling said liquid crystal material, comprises cooling said liquid crystal material in a direction from the second substrate toward said first substrate.
Claim 8
Independent Claim
246 words
A method of manufacturing a liquid crystal display, comprising the steps of: forming a first electrode structure on a first substrate; forming a second electrode structure on a second substrate; forming an orientation film on said second electrode structure; and then rubbing said orientation film on said second substrate, wherein said first substrate does not have an orientation film; disposing said first substrate and said second substrate to face each other and to be spaced apart from each other by a predetermined distance; injecting a liquid including a liquid crystal material between the first and second substrates; heating the liquid crystal material injected between said first and second substrates to at least a transition temperature of said liquid crystal material so that said liquid crystal material is in an isotropic phase thereof; and gradually cooling said liquid crystal material until a phase change of said liquid crystal material occurs from the isotropic phase thereof to a nematic liquid crystal phase thereof; wherein said step of forming said first electrode structure on said first substrate includes forming on a surface of said first substrate: a plurality of driving elements; a plurality of pixel elements, each pixel element being connected to one of said driving elements; and a plurality of electrode lines respectively connected to one of said driving elements; and wherein said step of gradually cooling said liquid crystal material, comprises cooling said liquid crystal material in a direction from the second substrate toward said first substrate.
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