GB1381428A - Liquid-crystal cells - Google Patents
Liquid-crystal cellsInfo
- Publication number
- GB1381428A GB1381428A GB2956573A GB2956573A GB1381428A GB 1381428 A GB1381428 A GB 1381428A GB 2956573 A GB2956573 A GB 2956573A GB 2956573 A GB2956573 A GB 2956573A GB 1381428 A GB1381428 A GB 1381428A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cell
- rim
- opening
- liquid crystal
- empty space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1341—Filling or closing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
1381428 Liquid crystal cell ELECTROVAC FABRIKATION ELEKTROTECHNISCHER SPEZIALARTIKEL GmbH 21 June 1973 [4 July 1972 23 May 1973] 29565/73 Heading H4F In a cell comprising liquid crystal material disposed between two plates joined at their margins, the liquid crystal material is introduced into the cell via an opening which is subsequently closed to hermetically seal the cell, and at least one empty space is left within the cell to accommodate thermal expansion effects or small bubbles which may form in the liquid crystal material, e.g. if the cell is energized by electrodes on the inner plate surface. As described the plates are of glass and joined by a glass solder (or plastics or ceramic) rim which is broken at one or more places to provide the filling opening and optional venting openings. The empty space(s) may lie within at least one such opening, i.e. within the rim itself, the rim being relatively wide at such points, and the cross-section of the opening may be constant, or taper inwardly or outwardly of the cell. The opening may lie at the corner or side of a rectangular cross-section cell. Alternatively a finger may extend from the rim inwardly of the cell to define with the rim and/or a further finger the desired empty space. The latter may or may not connect with a venting and/or filling opening and may have a constant or tapering cross-section. The cell openings may be sealed by deposition of a stoved metal coat on to which is soldered a metal pad.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT574672 | 1972-07-04 | ||
| AT451773A AT321378B (en) | 1973-05-23 | 1973-05-23 | Liquid crystal cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1381428A true GB1381428A (en) | 1975-01-22 |
Family
ID=25601250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2956573A Expired GB1381428A (en) | 1972-07-04 | 1973-06-21 | Liquid-crystal cells |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE2332972A1 (en) |
| FR (1) | FR2191135B3 (en) |
| GB (1) | GB1381428A (en) |
| IT (1) | IT986611B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070749A (en) * | 1975-07-04 | 1978-01-31 | Hitachi, Ltd. | Method of manufacturing liquid crystal display devices |
| GB2240187A (en) * | 1990-01-18 | 1991-07-24 | Varitronix Ltd | Liquid crystal display cell |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2802728C2 (en) * | 1977-01-24 | 1984-03-15 | Sharp K.K., Osaka | Electrochromic display cell |
| JPS5821268B2 (en) * | 1978-01-23 | 1983-04-28 | シャープ株式会社 | electrochromic display device |
| FR2506979A1 (en) * | 1981-05-27 | 1982-12-03 | Commissariat Energie Atomique | METHOD FOR LOCATING THE LIQUID MEDIUM IN A LIQUID MEDIUM CELL AND CORRESPONDING CELL |
| FR2506978A1 (en) * | 1981-05-27 | 1982-12-03 | Commissariat Energie Atomique | METHOD FOR MANUFACTURING A CELL HAVING A LIQUID MEDIUM AND CELL OBTAINED THEREBY |
| US4688899A (en) * | 1984-07-27 | 1987-08-25 | Casio Computer Co., Ltd. | Dual-frequency, dielectric anisotropy liquid crystal display |
| US4682858A (en) * | 1984-08-20 | 1987-07-28 | Canon Kabushiki Kaisha | Liquid crystal device having reduced-pressure region in communication with ferroelectric liquid crystal |
| JPS62206527A (en) * | 1986-03-06 | 1987-09-11 | Alps Electric Co Ltd | Liquid crystal cell |
| GB8812262D0 (en) * | 1988-05-24 | 1988-06-29 | Emi Plc Thorn | Display device |
| EP0358142B1 (en) * | 1988-09-07 | 1993-12-01 | Asulab S.A. | Liquid crystal cell with bubble traps |
| FR2636440B1 (en) * | 1988-09-12 | 1993-04-30 | Asulab Sa | LIQUID CRYSTAL CELL WITH BUBBLE TRAPS |
| DE3937943A1 (en) * | 1989-11-15 | 1991-05-16 | Nokia Unterhaltungselektronik | Liq. crystal cell substrate plate bonding - uses under-pressure to extract air from hollow zone for atmospheric pressure bonding |
-
1973
- 1973-06-21 GB GB2956573A patent/GB1381428A/en not_active Expired
- 1973-06-28 IT IT6893573A patent/IT986611B/en active
- 1973-06-28 DE DE19732332972 patent/DE2332972A1/en active Pending
- 1973-06-29 FR FR7323843A patent/FR2191135B3/fr not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4070749A (en) * | 1975-07-04 | 1978-01-31 | Hitachi, Ltd. | Method of manufacturing liquid crystal display devices |
| GB2240187A (en) * | 1990-01-18 | 1991-07-24 | Varitronix Ltd | Liquid crystal display cell |
| GB2240187B (en) * | 1990-01-18 | 1994-06-15 | Varitronix Ltd | Liquid crystal display cell |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2191135B3 (en) | 1976-06-18 |
| DE2332972A1 (en) | 1974-01-17 |
| FR2191135A1 (en) | 1974-02-01 |
| IT986611B (en) | 1975-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |