GB1381428A - Liquid-crystal cells - Google Patents

Liquid-crystal cells

Info

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
Application number
GB2956573A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electrovac AG
Original Assignee
Electrovac AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from AT451773A external-priority patent/AT321378B/en
Application filed by Electrovac AG filed Critical Electrovac AG
Publication of GB1381428A publication Critical patent/GB1381428A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1341Filling 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.
GB2956573A 1972-07-04 1973-06-21 Liquid-crystal cells Expired GB1381428A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
FR2636440B1 (en) * 1988-09-12 1993-04-30 Asulab Sa LIQUID CRYSTAL CELL WITH BUBBLE TRAPS
DE68911070T2 (en) * 1988-09-07 1994-06-09 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

Cited By (3)

* Cited by examiner, † Cited by third party
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
FR2191135A1 (en) 1974-02-01
IT986611B (en) 1975-01-30
DE2332972A1 (en) 1974-01-17

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee