EP0343902A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Display device
Assignee: Central Research Laboratories Ltd
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Filing: 1989-05-22
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Granted: —
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Expires: 2009-05-22
Abstract
Abstract A liquid crystal display cell (1) comprises first and second substrates (2,4) located in a substantially parallel relative arrangement to define an active display region therebetween when filled with liquid crystal material. The cell (1, 20, 30, 40, 60) further includes means (7, 21, 31, 41, 42, 51, 61) to effect filling of the active display region with liquid crystal material from at least a part of an edge of the active display region.
Inventors
- 👤 Andrew Neil Carrington
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 22:38
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1341; G02F1/137; G02F1/139; G02F1/141
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
57 words
A liquid crystal display cell comprising first and second substrates located in a substantially parallel relative arrangement to define an active display region therebetween when filled with liquid crystal material, and means to effect filling of the active display region with liquid crystal material from at least a part of an edge of the active display region.
Claim 2
Dependent Claim
57 words
A liquid crystal display cell comprising first and second substrates located in a substantially parallel relative arrangement to define an active display region therebetween when filled with liquid crystal material, and means to effect filling of the active display region with liquid crystal material from at least a part of an edge of the active display region.
Claim 3
Dependent Claim
39 words
A cell according to Claim 1 wherein the filling means is able to effect filling of the active display region with liquid crystal material from at least a part of at least two edges of the active display region.
Claim 4
Dependent Claim
55 words
A cell according to Claims 1 or 2 wherein the filling means comprises means to provide a filling front of liquid crystal material during filling of the cell with liquid crystal material, which filling front is not substantially parallel to a side of at least one of the cell or the active display region thereof.
Claim 5
Dependent Claim
44 words
A cell according to any one of the preceding claims wherein the filling means comprises a reservoir intermediate the first and second substrates, the reservoir having an outlet port which extends along at least a part of an edge of the active display region.
Claim 6
Dependent Claim
35 words
A cell according to Claim 4 wherein the reservoir has a width, in the dimension corresponding to the gap between the substrates in the active display region, much greater than the thickness of the gap.
Claim 7
Dependent Claim
40 words
A cell according to Claim 5 wherein the outlet port of the reservoir is of said width, in the dimension corresponding to the gap between the substrates in the active display region, much greater than the thickness of the gap.
Claim 8
Dependent Claim
37 words
A cell according to any one of Claims 4 to 6 wherein the outlet port extends along the direction of at least a part of at least two sides of the active display region and/or the cell.
Claim 9
Dependent Claim
46 words
A cell according to any one of Claims 4 to 7 wherein at least one of the substrates includes, on that side corresponding to the interior of the cell, a section indented relative to the active display region of the substrate, thereby to form the reservoir.
Claim 10
Dependent Claim
52 words
A cell according to Claim 8, said at least one of the substrates having one or more layers to effect colour filtering for the cell in the active display region wherein the one or more layers at least contributes to the stepped disposition between the active display region and the indented region.
Claim 11
Dependent Claim
29 words
A cell according to any one of Claims 4 to 9 wherein at least one of the substrates includes a portion which has been recessed to form the reservoir.
Claim 12
Dependent Claim
29 words
A cell according to any one of Claims 4 to 10 wherein one of the substrates has an aperture effective as a fill hole in communication with the reservoir.
Claim 13
Dependent Claim
15 words
A cell according to any one of the preceding claims further comprising a vacuum hole.
Claim 14
Dependent Claim
17 words
A cell according to Claim 12 wherein the vacuum hole is disposed in one of the substrates.
Claim 15
Dependent Claim
40 words
A cell according to Claims 12 or 13 further comprising a channel of an increased width, in the respective dimension, to the gap between the substrates in the active display region, the channel being in communication with the vacuum hole.
Claim 16
Dependent Claim
16 words
A cell according to any one of the preceding claims when filled with liquid crystal material.
Claim 17
Independent Claim
57 words
A method of filling a liquid crystal display cell comprising first and second substrates located in a substantially parallel relative arrangement to define an active display region therebetween when filled with liquid crystal material, the method comprising filling the cell with liquid crystal material from at least a part of an edge of the active display region.
Claim 18
Independent Claim
57 words
A method of filling a liquid crystal display cell comprising first and second substrates located in a substantially parallel relative arrangement to define an active display region therebetween when filled with liquid crystal material, the method comprising filling the cell with liquid crystal material from at least a part of an edge of the active display region.
Claim 19
Dependent Claim
29 words
A method according to Claim 16 comprising filling the cell with liquid crystal material from at least a part of at least two edges of the active display region.
Claim 20
Independent Claim
43 words
A method according to Claims 16 or 17 wherein the filling step comprises filling a reservoir intermediate the first and second substrates, the reservoir having an outlet port which extends along at least a part of an edge of the active display region.
Claim 21
Independent Claim
45 words
A method according to any one of Claims 16 to 18, the cell having a vacuum hole wherein the filling step includes the step of applying a suction pressure to the vacuum hole whereby the rate at which the cell is filled may be controlled.
Claim 22
Dependent Claim
19 words
A liquid crystal display cell when filled by the method according to any one of Claims 16 to 19.
References Cited (Backward Citations)
No citation records indexed.
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