Patent US3374929A successfully refreshed from Google Patents.
Patent US4640583A successfully refreshed from Google Patents.
US4640583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display panel having an inner and an outer seal and process for the production thereof
Assignee: Seiko Epson Corp
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Filing: 1984-07-19
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Granted: 1987-02-03
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Expires: 2004-07-19
Abstract
Abstract A display panel having a pair of spaced apart flexible substrates and a display medium sandwiched therebetween. A multiple seal contains the display medium between the substrates and maintains the substrates in spaced separation. The multiple seal includes a first seal for strongly adhering to the substrates and a second seal for forming a low water permeability seal. A process for the production of a display panel having a pair of spaced apart flexible substrates and a display medium sandwiched therebetween. A first sealant which strongly adheres to the substrates is printed on the interior surface of one substrate. A second seal, which has low water permeability, is printed on the other substrate. A spacer is scattered on at least one of the substrates. The substrates are combined together and the sealants are cured to form a display panel.
Inventors
- 👤 Jun Hoshikawa
- 👤 Yukihiro Iwashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:13
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/15; G02F1/153; G02F1/161; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341; Y; Y10; Y10S; Y10S359/00; Y10S359/90
Claims Analysis
Total Claims: 58
Claim 1
Independent Claim
68 words
A display panel, comprising: a pair of spaced apart flexible substrates; a display medium sandwiched therebetween; and multiple seal means deposited between the substrates for containing the display medium between the substrates and maintaining the substrates in spaced separation, including a first seal member of a material having the property of strongly adhering to the substrates and a second seal member having the property of low water permeability.
Claim 2
Dependent Claim
68 words
A display panel, comprising: a pair of spaced apart flexible substrates; a display medium sandwiched therebetween; and multiple seal means deposited between the substrates for containing the display medium between the substrates and maintaining the substrates in spaced separation, including a first seal member of a material having the property of strongly adhering to the substrates and a second seal member having the property of low water permeability.
Claim 3
Dependent Claim
13 words
The display panel of claim 1, wherein the first seal member is discontinuous.
Claim 4
Dependent Claim
35 words
The display panel of claim 1, wherein one of the seal members is an inner seal in contact with the display medium and the other seal member is an outer seal surrounding said inner seal.
Claim 5
Dependent Claim
24 words
The display panel of claim 3, wherein said second seal member is the inner seal and said first seal member in the outer seal.
Claim 6
Dependent Claim
17 words
The display panel of claim 4, wherein the first seal member discontinously surrounds the second seal member.
Claim 7
Dependent Claim
24 words
The display panel of claim 3, wherein said first seal member is the inner seal and said second seal member is the outer seal.
Claim 8
Dependent Claim
24 words
The display panel of claim 6, wherein the first seal member is discontinuous and the second seal member continuously surrounds the first seal member.
Claim 9
Dependent Claim
105 words
The display panel of claim 1, wherein the flexible substrates are formed from one of the group of polyester type resins, cellulose type resins, such as cellulose diacetate, cellulose triacetate and cellulose acetate butyrate, polyethersulfone type resins, polysulfone type resins, acrylic resins, polyethylene terephthalate type resins, phenoxy type resins, phenoxy-urethane type resins, urethane type resins, polyether ketone type resins, polyether ether ketone type resins, polyether imide type resins, epoxy resins, polyimide type resins, polyamide type resins, polyimideamide type resins, polycarbonate type resins, resins obtained by mixing two or more of the above resins and resins obtained by laminating two or more of the above resins.
Claim 10
Dependent Claim
30 words
The display panel of claim 1, wherein the first seal member is formed from one of the group of silicone type resins, flexible epoxy type resins and polyester type resins.
Claim 11
Dependent Claim
27 words
The display panel of claim 1, wherein the second seal member is formed from one of the group of epoxy type resins and anaerobic ultraviolet curing resins.
Claim 12
Dependent Claim
14 words
The display panel of claim 10, wherein the anaerobic ultraviolet curing resin is acrylic.
Claim 13
Dependent Claim
26 words
The display panel of claim 1, wherein the first seal member is a silicone type resin and the second seal member is an epoxy type resin.
Claim 14
Dependent Claim
24 words
The display panel of claim 1, wherein the multiple seal means further comprises a third seal member for forming a low water permeability seal.
Claim 15
Dependent Claim
21 words
The display panel of claim 13, wherein the first, second and third seal members are concentrically arranged surrounding the display medium.
Claim 16
Dependent Claim
43 words
The display panel of claim 14, wherein the second seal member is in contact with and surrounds the display medium, the first seal member at least partially surrounds the second seal member and the third seal member continuously surrounds the first seal member.
Claim 17
Dependent Claim
18 words
The display panel of claim 14, wherein the first seal member is discontinuous around the second seal member.
Claim 18
Dependent Claim
19 words
The display panel of claim 13, wherein the second and third seal members are formed from the same material.
Claim 19
Dependent Claim
20 words
The display panel of claim 1, wherein the first seal member is discontinuous and contained within the second seal member.
Claim 20
Dependent Claim
26 words
The display panel of claim 1, further comprising electrodes on the opposed faces of the flexible substrate and electrically conducting means for electrically connecting the electrodes.
Claim 21
Dependent Claim
17 words
The display panel of claim 19 wherein the electrically conducting means is formed within the display medium.
Claim 22
Dependent Claim
18 words
The display panel of claim 19 wherein the electrically conducting means is formed within the first seal member.
Claim 23
Dependent Claim
18 words
The display panel of claim 19 wherein the electrically conducting means is formed within the second seal member.
Claim 24
Dependent Claim
19 words
The display panel of claim 1 further including a barrier layer on at least one of the flexible substrates.
Claim 25
Dependent Claim
39 words
The display panel of claim 23 wherein the barrier layer is formed from one of the group of polyvinylidine chloride, polyvinyl alcohol, polyacrylonitrile, mixtures of polyvinyl alcohol and acrylic resins and mixtures of polyvinyl butryral and epoxy type resins.
Claim 26
Dependent Claim
25 words
The display panel of claim 23 wherein the barrier layer is formed from one of the group of silicon dioxide and phosphoric acid-iron type substances.
Claim 27
Dependent Claim
19 words
The display panel of claim 23 wherein the barrier layer prevents the passage of one of air and water.
Claim 28
Dependent Claim
27 words
The display panel of claim 23 wherein the barrier layer is formed on the surface of at least one of the flexible substrates facing the display medium.
Claim 29
Dependent Claim
30 words
The display panel of claim 23 wherein the barrier layer is formed on the surface of at least one of the flexible substrates opposing the surface facing the display medium.
Claim 30
Dependent Claim
12 words
The display panel of claim 23 further including an acrylic undercoat layer.
Claim 31
Dependent Claim
17 words
The display panel of claim 29 wherein the acrylic undercoat layer has a thickness of about 0.5-5μ.
Claim 32
Dependent Claim
17 words
The display panel of claim 29 wherein the acrylic undercoat layer has a thickness of about 1-2μ.
Claim 33
Dependent Claim
14 words
The display panel of claim 1 wherein the display medium is a liquid crystal.
Claim 34
Dependent Claim
12 words
The display panel of claim 1 wherein the display medium is electrochromic.
Claim 35
Dependent Claim
12 words
The display panel of claim 1 wherein the display medium is electroluminescent.
Claim 36
Dependent Claim
12 words
The display panel of claim 1 wherein the display medium is electrophoretic.
Claim 37
Dependent Claim
12 words
The display panel of claim 1 wherein the display medium is magnetic.
Claim 38
Dependent Claim
13 words
The display panel of claim 1 wherein the flexible substrates have inherent polarizability.
Claim 39
Dependent Claim
94 words
A process for the production of a display panel having a pair of spaced apart flexible substrates and a display medium sandwiched therebetween, comprising: depositing on the interior surface of one substrate a first sealant formed of a material having the property of strongly adhering to the substrates; depositing on the interior surface of the other substrate, a second seal, formed of a material having the property of low water permeability; scattering a spacer on at least one of the substrates; combining the substrates together; and curing the sealants to form a display panel.
Claim 40
Dependent Claim
94 words
A process for the production of a display panel having a pair of spaced apart flexible substrates and a display medium sandwiched therebetween, comprising: depositing on the interior surface of one substrate a first sealant formed of a material having the property of strongly adhering to the substrates; depositing on the interior surface of the other substrate, a second seal, formed of a material having the property of low water permeability; scattering a spacer on at least one of the substrates; combining the substrates together; and curing the sealants to form a display panel.
Claim 41
Dependent Claim
21 words
The process of claim 38 wherein the first sealant which strongly adheres to the substrate is deposited in a discontinuous manner.
Claim 42
Dependent Claim
15 words
The process of claim 39 wherein the second seal is deposited in a discontinuous manner.
Claim 43
Dependent Claim
19 words
The process of claim 40 wherein the first and second seals become continuous when the substrates are combined together.
Claim 44
Dependent Claim
19 words
The process of claim 39 wherein the combination of the substrates causes the discontinuous first seal to become continuous.
Claim 45
Dependent Claim
18 words
The process of claim 39 further comprising forming a barrier layer on at least one of the substrates.
Claim 46
Dependent Claim
15 words
The process of claim 38 wherein the second seal is deposited in a discontinuous manner.
Claim 47
Dependent Claim
17 words
The proces of claim 44 wherein the second seal becomes continuous when the substrates are combined together.
Claim 48
Dependent Claim
12 words
The process of claim 38 wherein the sealants are cured by heating.
Claim 49
Dependent Claim
24 words
The process of claim 38 wherein the spacer is scattered by placing a substrate in a gas atmosphere in which the spacer is suspended.
Claim 50
Dependent Claim
29 words
The process of claim 38 wherein the spacer is scattered by placing a substrate in a liquid containing the suspended spacer and withdrawing the substrate at a constant rate.
Claim 51
Dependent Claim
24 words
The process of claim 38 wherein the spacer is scattered by spraying a solution of the spacer and a volatile solvent over a substrate.
Claim 52
Dependent Claim
12 words
The process of claim 38 further including applying an upper-lower conductive member.
Claim 53
Dependent Claim
20 words
The process of claim 38 further comprising printing a third seal, which has low water permeability on the one substrate.
Claim 54
Dependent Claim
15 words
The process of claim 38 further comprising filling the display panel with a display medium.
Claim 55
Dependent Claim
21 words
The process of claim 38 further comprising forming an edge barrier between the first sealant and the edge of the substrate.
Claim 56
Dependent Claim
16 words
The process of claim 38 further comprising forming a barrier layer on one of the substrates.
Claim 57
Dependent Claim
20 words
The process of claim 54 wherein the barrier layer is formed on the display medium side of the flexible substrate.
Claim 58
Dependent Claim
22 words
The process of claim 54 wherein the barrier layer is formed on the side of the substrate opposite to the display medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |