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 
  • G02F1/15—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 an electrochromic effect
  • G02F1/153—Constructional details
  • G02F1/1533—Constructional details structural features not otherwise provided for
• • 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
  • G02F1/133377—Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel
• • 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
  • G02F1/1345—Conductors connecting electrodes to cell terminals
• • 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 
  • G02F1/15—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 an electrochromic effect
  • G02F1/153—Constructional details
  • G02F1/155—Electrodes
• • 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
  • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
  • G02F2201/42—Arrangements for providing conduction through an insulating substrate
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
  • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
  • H10K2102/301—Details of OLEDs
  • H10K2102/302—Details of OLEDs of OLED structures
  • H10K2102/3023—Direction of light emission
  • H10K2102/3026—Top emission
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
  • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
  • H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
  • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
  • H10K59/80—Constructional details
  • H10K59/82—Interconnections, e.g. terminals
• • H—ELECTRICITY
  • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
  • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
  • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
  • H10K77/10—Substrates, e.g. flexible substrates

Definitions

• the present invention relates to a display, and a method of manufacturing the same.
• the display comprises an electrode layer, a substrate, which on the surface facing the electrode layer is covered with a set of electrode elements placed in cavities, and a layer of electro-optic material which is arranged between the electrode layer and the substrate.
• the present invention relates to the technical field of flat displays.
• An example of a display or screen according to that stated above (also called LCD, Liquid Crystal Display) is disclosed in SE-511,511 with the title:
• Display relates to a liquid crystal display, comprising an electrode layer, a substrate, which on the surface facing the electrode layer is covered with a set of electrode elements, and a layer of electro-optic material which is arranged between the electrode layer and the substrate, the substrate being arranged behind the layer of electro-optic material in relation to the viewing direction, the substrate being arranged to support, on the one hand, electronic components for controlling the electrode elements and, on the other, conductive patterns for connecting the electronic components to the electrode elements, and the electrode elements forming picture elements in the display in cooperation with the electrode layer and the layer of electro-optic material.
• One drawback with this display is the amount of electro-optic material needed to be filled between the electrode layer and the substrate.
• the manufacturing method results in a display with pixel regions filled with a continues layer of liquid crystals.
• the electro-optic material is quite expensive and it is desirable to minimise the amount used.
• Liquid crystal display device and method for manufacturing the same relates to a display including: a first substrate and a second substrate, a liquid crystal layer interposed between the first substrate and the second substrate.
• the first substrate includes a polymer wall formed of transparent resin
• the liquid crystal layer includes a plurality of liquid crystal regions partitioned by the polymer wall, and liquid crystal molecules in the plurality of liquid crystal regions which are aligned in axial symmetry, with respect to an axis in a direction substantially perpendicular to a surface of the first substrate.
• the main focus in this particular manufacturing method and display is only to achieve a wide viewing angle and improved quality of the displayed information.
• the main advantages of the display according to the present invention described herein are reduced production costs compared to other manufacturing methods due to a minimal number of layers, and use of less expensive electro-optical material, combined with a thin and compact display.
• the object of the present invention is to reduce the number of layers and a minimal use of electro-optical material, resulting in a more cost-effective production method and a robust display.
• the manufacturing method comprises the steps of providing an isolating substrate and making cavities in the top surface of the substrate.
• the cavities are referred to as micro pockets.
• Each micro pockets is applied with holes in the centre extending from the upper surface of the micro pocket and all the way through to the underside of the isolating substrate.
• a conductive material is applied on the inner surfaces of the micro pockets and into the holes.
• the micro pockets are filled with an electro-optical material and applied a uniform layer of a transparent common conductor to cover all the micro pockets with the electro-optical material.
• a transparent substrate is applied on top of the transparent conductor to make the top layer.
• the isolating substrate is made of glassfibre composite, plastic or ceramics.
• the forming of the cavities in the top layer of the isolating substrate can be formed by stamping, imprinting, engraving or etching in the isolating substrate.
• the forming of the cavities in the top layer of the isolating substrate are formed by applying a separate sheet with holes, where each hole corresponds to one picture element or pixel. The sheet is mounted on the isolating substrate with depositing conductive material, gluing or heat sealing.
• the conductive material is ITO, copper or aluminium.
• the electro-optical material is liquid crystals, LED (inorganic or organic), electrochromic material, or another material changing its optical properties with an applied electric field.
• the common conductor covering the micro pockets comprises ITO or SnO.
• the transparent substrate is made of glass or plastic.
• the invention also comprises the display itself with the features stated in the appended claims.
• the invention is based on the understanding that in a display of this type, it is advantageous to let the electrode elements, which are commonly called pixels, be connected to a conductive pattern by means of conductive connections which emanate from the electrode elements in the direction away from the layer of electro-optic material, i.e. the underside of the isolating substrate. This will contribute to the form factor of the thin display.
• Another aspect also contributing to a thin display according to the invention is the cavities made directly in the isolating substrate, or formed with a separate sheet with holes mounted on the isolating substrate.
• Fig. 1 is a schematic cross-sectional view of the components in the micro pocket display system of the present invention
• Fig. 2 is a schematic cross-sectional view of an assembled display according to the present invention
• Fig. 3 is a schematic view according to method 1 with micro pockets for the electro-optical material formed in isolating substrate.
• Fig. 4 is a schematic view according to method 2 with micro pockets for electro- optical material formed in a separate sheet.
• Fig. 1 shows a cross-section of the different components making the display.
• the base of the display is made of an isolating substrate 80 with small cavities 60 imprinted. These cavities 60 will make the picture elements or pixels of the assembled display. For further reference the cavities are referred to as micro pockets.
• the isolating substrate 80 can be made of a glassfibre composite, plastic, ceramics or another material with isolating characteristics.
• the micro pockets 60 may be formed by stamping, imprinting, engraving or etching in the substrate 80. After the micro pockets 60 are established, holes 70 in the centre of each micro pocket 60 are made. These holes 70 will in turn provide for an electrical connection between the underside of the substrate and each pocket 60. This connection will be established when a conductive material 40, 50 is applied to the substrate 80.
• the holes 70 will also be filled with the conductive material 40, 50, thus enabling physical contact between the micro pockets 60 and electronic components 90 and wires connected on the underside of the isolating substrate 80.
• the micro pockets 60 are then filled with an electro- optical material 30, i.e. liquid crystal, LED, electrochromic material.
• the layer of electro-optical material 30 is covered with a layer of a transparent common conductor 20, i.e. ITO or SnO.
• the top layer consists of a transparent substrate 10 like glass or plastic.
• Fig. 2 shows a cross-section of an assembled display with all the different layers that form the thin display according to the invention.
• the electrical connections 40, 50 with mounted wires and electronic components 90 will ensure activation of the electro-optical medium 30.
• the electro-optical material 30 is covered with a layer of a transparent common conductor 20.
• the top layer consists of a transparent substrate 10 like glass or plastic.
• Fig. 3 shows a first method of applying the micro pockets 60 in the isolating substrate 70.
• the cavities or micro pocket are formed by stamping, imprinting, engraving or etching on the substrate 70.
• Fig. 4 shows a second method of applying the micro pockets in the isolating substrate 70.
• This method involves the steps of forming holes 65 in a separate sheet, where each hole 65 corresponds to one picture element or pixel.
• the sheet 55 is mounted on the isolating substrate 70 with depositing conductive material, gluing or heat sealing.
• the present invention is not restricted to the manufacturing method and display described herein.
• the display may be manufactured in different variations, for instance the holes in the cavities may be applied out of centre.

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• Physics & Mathematics (AREA)
• Nonlinear Science (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Mathematical Physics (AREA)
• Chemical & Material Sciences (AREA)
• Crystallography & Structural Chemistry (AREA)
• Devices For Indicating Variable Information By Combining Individual Elements (AREA)
• Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
• Medicines Containing Plant Substances (AREA)

Applications Claiming Priority (3)

Publications (1)

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• 2001
  • 2001-11-14 NO NO20015569A patent/NO314965B1/no not_active IP Right Cessation
• 2002
  • 2002-11-13 WO PCT/NO2002/000421 patent/WO2003042753A1/en not_active Application Discontinuation
  • 2002-11-13 EP EP02778123A patent/EP1454185A1/en not_active Withdrawn

Non-Patent Citations (1)

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