US5854664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display panel and method and device for manufacturing the same
Assignee: Panasonic Holdings Corp
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Filing: 1995-09-25
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Granted: 1998-12-29
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Expires: 2015-09-25
Abstract
Abstract A mixed material of liquid crystals and resin is dropped on at least one substrate in an amount greater than the amount needed to cover a display area for the LCD panel. The substrate is adhered to another substrate, and excess material is removed to the outside of a display area. The phase-separation of the liquid crystals and resin is carried out by irradiating light while pressure is added to at least one substrate, so that a liquid crystal display panel applied to a liquid crystal display device or a light shutter can be manufactured without applying a complex vacuum device.
Inventors
- 👤 Kazuo Inoue
- 👤 Tsuyoshi Uemura
- 👤 Junji Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:38
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1339; G02F1/1334; G02F1/1341; G02F1/13415
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
163 words
A method of manufacturing a liquid crystal display panel comprising the steps of: dropping liquid crystals and resin or a mixed material of liquid crystals and resin on at least one of a first substrate and a second substrate in an amount greater than an amount needed to cover a display area for the display panel when the substrates are sealed; adhering said first substrate and said second substrate to each other; removing excess liquid crystals out of a display area; and carrying out a phase-separation of said liquid crystals and said resin by irradiating light while pressure is added to at least one of said first substrate and said second substrate, wherein after the phase-separation of the liquid crystals and the resin is carried out, the first and second substrates are cut along a peripheral section of a display area and the cut surface or a section of said cut surface of the first substrate and the second substrate is then sealed.
Claim 2
Independent Claim
163 words
A method of manufacturing a liquid crystal display panel comprising the steps of: dropping liquid crystals and resin or a mixed material of liquid crystals and resin on at least one of a first substrate and a second substrate in an amount greater than an amount needed to cover a display area for the display panel when the substrates are sealed; adhering said first substrate and said second substrate to each other; removing excess liquid crystals out of a display area; and carrying out a phase-separation of said liquid crystals and said resin by irradiating light while pressure is added to at least one of said first substrate and said second substrate, wherein after the phase-separation of the liquid crystals and the resin is carried out, the first and second substrates are cut along a peripheral section of a display area and the cut surface or a section of said cut surface of the first substrate and the second substrate is then sealed.
Claim 3
Dependent Claim
59 words
The method of claim 1, wherein the phase-separation of the liquid crystals and the resin outside the display area is first carried out by irradiating light to a peripheral section of said display area, and the phase-separation of the liquid crystals and the resin inside said display area is then carried out by irradiating light to said display area.
Claim 4
Dependent Claim
100 words
The method of claim 1, wherein the liquid crystals and the resin or the mixed material of the liquid crystals and the resin are sealed between the first substrate and the second substrate after a film is formed on one section of at least one of said first substrate and said second substrate; and wherein said liquid crystals and said resin or said mixed material sealed between said first substrate and said second substrate has a larger contact angle on said film than a contact angle on a central section of the display area where said film is not formed.
Claim 5
Dependent Claim
16 words
The method of claim 3, wherein the film is formed on an edge of the substrate.
Claim 6
Dependent Claim
17 words
The method of claim 3, wherein the film is formed on an edge of the display area.
Claim 7
Dependent Claim
11 words
The method of claim 3, wherein the film comprises thermoplastic resin.
Claim 8
Dependent Claim
83 words
The method of claim 1, wherein the liquid crystals and the resin or the mixed material of liquid crystals and resin are sealed between the first substrate and the second substrate by dropping said liquid crystals and said resin or said mixed material onto at least said first substrate, by reducing pressure while keeping said liquid crystals and said resin or said mixed material in contact with said second substrate, and by adhering said first substrate and said second substrate to each other.
Claim 9
Dependent Claim
25 words
The method of claim 1, wherein the phase-separation of the liquid crystals and the resin is carried out by irradiating light to the display area.
Claim 10
Dependent Claim
107 words
The method of claim 1, wherein the liquid crystals and the resin or the mixed material are sealed between the first substrate and the second substrate by dropping said liquid crystals and said resin or said mixed material on an end section of said first substrate, by placing said second substrate so as to set said resin and said liquid crystals or said mixed material in contact with an end section of said second substrate, by gradually sliding down said second substrate on said first substrate with a contacting point at a center section, and by adhering said first substrate and said second substrate to each other.
Claim 11
Dependent Claim
11 words
The method of claim 1, wherein the resin is photosetting resin.
Claim 12
Dependent Claim
29 words
The method of claim 1, wherein, during the adhering step, the first and second substrates are separated from each other by spacers located in positions including the display area.
Claim 13
Independent Claim
214 words
A method of manufacturing a liquid crystal display panel comprising the steps of: dropping liquid crystals and resin or a mixed material of liquid crystals and resin on at least one of a first substrate and a second substrate in an amount greater than an amount needed to cover a display area for the display panel when the substrates are sealed; adhering said first substrate and said second substrate to each other; removing excess liquid crystals out of a display area; and carrying out a phase-separation of said liquid crystals and said resin by irradiating light while pressure is added to at least one of said first substrate and said second substrate, wherein the liquid crystals and the resin or the mixed material are sealed between the first substrate and the second substrate by dropping said liquid crystals and said resin or said mixed material on an end section of said first substrate, by placing said second substrate so as to set said resin and said liquid crystals or said mixed material in contact with an end section of said second substrate, by gradually sliding down said second substrate on said first substrate with a contacting point at a center section, and by adhering said first substrate and said second substrate to each other.
Claim 14
Independent Claim
214 words
A method of manufacturing a liquid crystal display panel comprising the steps of: dropping liquid crystals and resin or a mixed material of liquid crystals and resin on at least one of a first substrate and a second substrate in an amount greater than an amount needed to cover a display area for the display panel when the substrates are sealed; adhering said first substrate and said second substrate to each other; removing excess liquid crystals out of a display area; and carrying out a phase-separation of said liquid crystals and said resin by irradiating light while pressure is added to at least one of said first substrate and said second substrate, wherein the liquid crystals and the resin or the mixed material are sealed between the first substrate and the second substrate by dropping said liquid crystals and said resin or said mixed material on an end section of said first substrate, by placing said second substrate so as to set said resin and said liquid crystals or said mixed material in contact with an end section of said second substrate, by gradually sliding down said second substrate on said first substrate with a contacting point at a center section, and by adhering said first substrate and said second substrate to each other.
Claim 15
Dependent Claim
25 words
The method of claim 12, wherein the phase-separation of the liquid crystals and the resin is carried out by irradiating light to the display area.
Claim 16
Dependent Claim
29 words
The method of claim 12, wherein, during the adhering step, the first and second substrates are separated from each other by spacers located in positions including the display area.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-12-28 | 2002-06-29 | 2002-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-12-28 | 2006-06-29 | 2006-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-12-28 | 2010-06-29 | 2010-12-29 | $7700.00 | Window Closed / Lapsed |