GB1362061A - Display arrangements - Google Patents

Display arrangements

Info

Publication number
GB1362061A
GB1362061A GB275971*[A GB275971A GB1362061A GB 1362061 A GB1362061 A GB 1362061A GB 275971 A GB275971 A GB 275971A GB 1362061 A GB1362061 A GB 1362061A
Authority
GB
United Kingdom
Prior art keywords
strips
liquid crystal
layers
elements
display
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
GB275971*[A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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
Application filed by Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB275971*[A priority Critical patent/GB1362061A/en
Publication of GB1362061A publication Critical patent/GB1362061A/en
Expired legal-status Critical Current

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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • 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
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • G02F1/135—Liquid crystal cells structurally associated with a photoconducting or a ferro-electric layer, the properties of which can be optically or electrically varied
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133621—Illuminating devices providing coloured light
    • G02F1/133622—Colour sequential illumination

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

1362061 Matrix displays MARCONI CO Ltd 26 Oct 1971 [20 Jan 1971] 2759/71 Heading G5C [Also in Division H4] A liquid crystal display device comprises a plurality of display elements 0 ... 7 each with at least two layers of liquid crystal material and means for controlling the light transmission of each layer independently. A display strip 8 comprises elements 0 ... 7 each consisting of a portion of layers 10 ... 15 containing liquid crystal material in the shaded areas and air or other transparent material in the remaining areas. Each layer is bounded by two conductors across which a potential may be applied to render the liquid crystal portions of the layer opaque. The shaded areas and number of layers are such that on actuating selected layers a light path is provided through all the layers to only one display element, the remainder being opaque. A number of strips may be combined to provide a screen which can be scanned. Alternatively the elements may be elongated to form a panel and a screen formed from two such panels with the elements at right angles. Another embodiment comprises two layers of liquid crystal material 60, each between a continuous electrode 54, 55 on a glass sheet 51 and intersecting sets of strip electrodes 59. Extending across each set of electrodes 59 are strips 52, 53 of photoconductive material and light emitting strips 61, 62 comprising display strips 63, 64 similar to strips 8 and light sources 65, 66. A potential applied across both liquid crystal layers renders the panel opaque. When a portion of each photoconductive strip is illuminated by elements of the strips 61, 62, the resistance falls and the potential between strip electrodes adjacent the portions and the continuous electrode falls. The associated strips of liquid crystal become clear and a spot of light emerges. Moving the illuminating elements of the strips 61, 62 allows the panel to be scanned. The light source behind the panel may be an electroluminescent panel comprising red, blue and green emitting phosphors to provide a coloured display. The liquid crystal may be parazoxyanisole; compounds with linear structure of conjugated double bonds containing polar groups such as - N = N - and -CH = N- or OCH 3 ; derivatives of cholesterol C 27 H 46 O.
GB275971*[A 1971-10-26 1971-10-26 Display arrangements Expired GB1362061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB275971*[A GB1362061A (en) 1971-10-26 1971-10-26 Display arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB275971*[A GB1362061A (en) 1971-10-26 1971-10-26 Display arrangements

Publications (1)

Publication Number Publication Date
GB1362061A true GB1362061A (en) 1974-07-30

Family

ID=9745356

Family Applications (1)

Application Number Title Priority Date Filing Date
GB275971*[A Expired GB1362061A (en) 1971-10-26 1971-10-26 Display arrangements

Country Status (1)

Country Link
GB (1) GB1362061A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532452A1 (en) * 1982-08-31 1984-03-02 Thomson Csf PHOTOCONDUCTIVE ACTIVE ADDRESSING DISPLAY SCREEN
CN109041308A (en) * 2018-09-21 2018-12-18 苏州本瑞光电科技有限公司 A kind of electric heating function glass and display module
CN110262125A (en) * 2019-06-04 2019-09-20 武汉华星光电技术有限公司 Backlight assembly, display panel assembly and method for controlling backlight thereof
US10969534B2 (en) 2019-06-04 2021-04-06 Wuhan China Star Optoelectronics Technology Co., Ltd. Backlight assembly, display panel assembly and backlight control method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532452A1 (en) * 1982-08-31 1984-03-02 Thomson Csf PHOTOCONDUCTIVE ACTIVE ADDRESSING DISPLAY SCREEN
EP0106717A1 (en) * 1982-08-31 1984-04-25 Thomson-Csf Display device with active addressing using a photoconductor
CN109041308A (en) * 2018-09-21 2018-12-18 苏州本瑞光电科技有限公司 A kind of electric heating function glass and display module
CN110262125A (en) * 2019-06-04 2019-09-20 武汉华星光电技术有限公司 Backlight assembly, display panel assembly and method for controlling backlight thereof
US10969534B2 (en) 2019-06-04 2021-04-06 Wuhan China Star Optoelectronics Technology Co., Ltd. Backlight assembly, display panel assembly and backlight control method

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee