EP0372942A2 - Elektrolumineszente Dünnschicht-Randstrahlenstruktur - Google Patents

Elektrolumineszente Dünnschicht-Randstrahlenstruktur Download PDF

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Publication number
EP0372942A2
EP0372942A2 EP89312740A EP89312740A EP0372942A2 EP 0372942 A2 EP0372942 A2 EP 0372942A2 EP 89312740 A EP89312740 A EP 89312740A EP 89312740 A EP89312740 A EP 89312740A EP 0372942 A2 EP0372942 A2 EP 0372942A2
Authority
EP
European Patent Office
Prior art keywords
light
layer
pixel
pixels
light energy
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.)
Granted
Application number
EP89312740A
Other languages
English (en)
French (fr)
Other versions
EP0372942B1 (de
EP0372942A3 (de
Inventor
David Leksell
Zoltan K. Kun
Robert Mazelsky
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.)
Westinghouse Electric Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of EP0372942A2 publication Critical patent/EP0372942A2/de
Publication of EP0372942A3 publication Critical patent/EP0372942A3/de
Application granted granted Critical
Publication of EP0372942B1 publication Critical patent/EP0372942B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/12—Light sources with substantially two-dimensional [2D] radiating surfaces

Definitions

  • each dielectric layer 46, 48 may in fact consist of a plurality of sublayers.
  • the sublayers may be formed from different dielectric materi­als, and those skilled in the art may select the sublayer material utilized depending upon the dielectric properties desired.
  • each light-emitting face 64 of each individ­ual pixel 54 has a preselected contour (concave contour in Fig. 2), each light-emitting face defines an optical lens integral with the pixel.
  • the contour of an individual pixel light-emitting face By varying the contour of an individual pixel light-emitting face, the light energy refracted at the light-emitting face may be projected in a desired direction and shaped into a beam of light energy having a preselected beam pattern.
  • each pixel light-emitting face 64, and particularly the edge face 74 of each pixel phosphor layer 50 is substantially perpen­dicular to the phosphor layer itself and the first and second faces 76, 78 defined by common and control elec­trodes 42, 52. As a result, the light energy refracted by each pixel integral lens will be oriented in a direction parallel with the width Y of the pair of pixels.
  • the beam pattern can be shaped for a specific application.
  • the con­verging, diverging or collimated beam of light energy is oriented parallel to the width Y of the pair of pixels.
  • Fig. 4 there is illustrated a top view of the pair of pixels 54 of Fig. 3.
  • varying the radius of curvature of each pixel light-emitting face 64 between R′ and R ⁇ results in a corresponding change in the contour of each light-emitting face.
  • the light energy projected at the light-emitting face may have a converging beam pattern with a controlled rate of conver­gence, a diverging beam pattern with a controlled rate of divergence, or a collimated beam pattern.
  • each pixel 54 illustrated in Fig. 5 has an end portion 80 which is configured differ­ently than the end portion 62 of each pixel illustrated in Figs. 2 through 4, the outer or light-emitting face of each end portion 80 is also shaped to a contour for projecting a light energy in a preselected direction and forming a beam of light energy having either a converging diverging or collimated beam pattern.
  • each of the pixels 54 has an end portion 94 which includes an integral, convex light-emitting face 96 operable to project a beam of light energy having a diverging beam pattern.
  • Each pixel 54 illustrated in Fig. 6 has the same layered configuration as the pixels illustrated in Figs. 2 through 5, with the exception that the light-emitting face 96 of each pixel 54 in Fig. 6 has a convex contour viewed from the associated pixel body portion 66.
  • the radius of curvature R of each convex light-emitting face 96 may be varied to produce a projected beam of light energy having a diverging beam pattern and a controlled rate of divergence.
  • the phosphor layer common to the trio of pixels is divided into a first zone formed from a first preselected composition of light-radiating materials, a second zone formed from a second composition of light-radiating materials, and a third zone formed from a third preselected composition of light-radiating materi­als, and each zone is associated with a single pixel, then three beams of light energy at a first, second and third preselected color,respectively, will be projected into overlapping relationship at plane 102.
  • the three colored beams of light energy will be blended at the area of the overlap to form a linear light image having a resultant color dependent on the colors of the first, second and third beams of light energy.
  • each pixel Since the phosphor layer of each pixel has an edge face which forms a portion of the lens, light energy radiated within a pixel phosphor layer and passed in a direction towards the edge face is refracted by the defined lens. Depending upon the contour of the integral lens, a beam of light energy may be projected by each pixel having either a diverging, collimated or converging beam pattern. If desired, a plurality of pixels positioned in side-by-­side relationship may each have an integral, convex lens formed thereon and oriented to provide that the beams of light energy projected by the plurality of pixels are projected into overlapping relationship with each other.
  • TFEL edge emitter structure 110 has a construc­tion similar to TFEL edge emitter structure 40 of Fig. 2, and includes a first dielectric layer 112 disposed on a common electrode layer 113. Common electrode layer 113 is, in turn, disposed on substrate layer 114. A second dielec­tric layer 116 is spaced from first dielectric layer 112, and a layer of phosphor material 118 is interposed there­between.
  • a pair of control electrodes 120 are disposed on second dielectric layer 116 to define, in conjunction with first and second dielectric layers 112, 116, phosphor layer 118 and common electrode layer 113, a pair of light emit­ting pixels 122.
  • the common and control electrodes of each pixel 122 are adapted to be connected to an excitation source 124 operable to provide a selected excitation signal to the phosphor layer of each pixel.
  • an excitation source 124 operable to provide a selected excitation signal to the phosphor layer of each pixel.
  • the light-emitting face 130 of each pixel has a generally serrated contour.
  • light-emitting face 130 is formed from a plurality of rectangular protuberances 132 separated from each other by a plurality of recesses 134.
  • the light-emitting face 130 of each pixel 122 defines an optical lens integral with the pixel to project the light energy passed therethrough in a preselected direction and form a beam of light energy having a preselected light pattern. Since the optical lens formed by light-emitting face 130 has a serrated contour, the plurality of protuberances 132 forming the serration act as waveguides to control the rate of divergence of the light energy projected by the pixel.
  • TFEL edge emitter structure 40′ includes a common electrode layer 42 disposed on a layer of substrate material 44.
  • a layer of dielectric material 46 is disposed on common electrode layer 42.
  • the dielectric layer may consist of a plurality of sublayers.
  • the sublayers may be formed from different dielectric materials, and those skilled in the art may select the sublayer material utilized depending upon the dielectric properties desired.
  • Phosphor layer 50 is disposed on dielectric layer 46, and the plurality of control electrodes 52 (one shown) are disposed directly on the phosphor layer.
  • common electrode layer 42, dielectric layer 46, phosphor layer 50 and the plurality of control electrodes 52 form a generally laminar arrangement on substrate 44.
  • the positioning of the various layers forming struc­ture 40′ may be rearranged so that phosphor layer 50 is disposed directly on common electrode layer 42. If this is the case, then dielectric layer 46 will be interposed between the phosphor layer and the plurality of control electrodes.
  • the TFEL edge emitter structure 40 illustrated in Figs. 2 and 3 and the TFEL edge emitter structure 40′ illustrated in Fig. 10 operate identically, and the only structural difference between the two is that structure 40′ includes only one layer of dielectric material. It will be further appreciated that, although not specifically described herein, the TFEL edge emitter structures illustrated in Figs. 4 through 9 may also be formed including only a single layer of dielectric material.

Landscapes

  • Electroluminescent Light Sources (AREA)
EP89312740A 1988-12-07 1989-12-07 Elektrolumineszente Dünnschicht-Randstrahlenstruktur Expired - Lifetime EP0372942B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28090988A 1988-12-07 1988-12-07
US280909 1988-12-07

Publications (3)

Publication Number Publication Date
EP0372942A2 true EP0372942A2 (de) 1990-06-13
EP0372942A3 EP0372942A3 (de) 1991-01-09
EP0372942B1 EP0372942B1 (de) 1994-09-28

Family

ID=23075124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89312740A Expired - Lifetime EP0372942B1 (de) 1988-12-07 1989-12-07 Elektrolumineszente Dünnschicht-Randstrahlenstruktur

Country Status (4)

Country Link
EP (1) EP0372942B1 (de)
JP (1) JPH02195679A (de)
DE (1) DE68918564T2 (de)
FI (1) FI895852A7 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0408231A1 (de) * 1989-07-10 1991-01-16 Westinghouse Electric Corporation Integrierte flache TFEL-Paneelfläche und vielfache Lichtquellen produzierende Randstrahlenstruktur
EP0398592A3 (de) * 1989-05-17 1991-01-16 Westinghouse Electric Corporation Elektrolumineszente Dünnschicht-Randstrahlenstruktur mit optischer Linse und vielfarbigen Lichtemissionssystem
US5138347A (en) * 1988-09-23 1992-08-11 Westinghouse Electric Corp. Thin film electroluminescent edge emitter structure with optical lens and multi-color light emission systems
EP0748145A3 (de) * 1995-06-07 1998-10-14 Hewlett-Packard Company Elektrolumineszente Vorrichtung als Scannerquelle
US6362333B1 (en) 1998-09-18 2002-03-26 Basf Aktiengesellschaft Method for simultaneously producing a cyclic lactam and a cyclic amine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100409247B1 (ko) * 2001-02-03 2003-12-11 (주) 아이템뱅크 전계분할 발광포스터 및 그 제조방법

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4535341A (en) * 1983-08-19 1985-08-13 Westinghouse Electric Corp. Thin film electroluminescent line array emitter and printer
US4885448A (en) * 1988-10-06 1989-12-05 Westinghouse Electric Corp. Process for defining an array of pixels in a thin film electroluminescent edge emitter structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5138347A (en) * 1988-09-23 1992-08-11 Westinghouse Electric Corp. Thin film electroluminescent edge emitter structure with optical lens and multi-color light emission systems
US5043715A (en) * 1988-12-07 1991-08-27 Westinghouse Electric Corp. Thin film electroluminescent edge emitter structure with optical lens and multi-color light emission systems
EP0398592A3 (de) * 1989-05-17 1991-01-16 Westinghouse Electric Corporation Elektrolumineszente Dünnschicht-Randstrahlenstruktur mit optischer Linse und vielfarbigen Lichtemissionssystem
EP0408231A1 (de) * 1989-07-10 1991-01-16 Westinghouse Electric Corporation Integrierte flache TFEL-Paneelfläche und vielfache Lichtquellen produzierende Randstrahlenstruktur
US5101137A (en) * 1989-07-10 1992-03-31 Westinghouse Electric Corp. Integrated tfel flat panel face and edge emitter structure producing multiple light sources
EP0748145A3 (de) * 1995-06-07 1998-10-14 Hewlett-Packard Company Elektrolumineszente Vorrichtung als Scannerquelle
KR100439390B1 (ko) * 1995-06-07 2004-08-04 휴렛-팩커드 컴퍼니(델라웨어주법인) 전자발광장치
US6362333B1 (en) 1998-09-18 2002-03-26 Basf Aktiengesellschaft Method for simultaneously producing a cyclic lactam and a cyclic amine

Also Published As

Publication number Publication date
EP0372942B1 (de) 1994-09-28
DE68918564D1 (de) 1994-11-03
FI895852A7 (fi) 1990-06-08
EP0372942A3 (de) 1991-01-09
JPH02195679A (ja) 1990-08-02
DE68918564T2 (de) 1995-08-24
FI895852A0 (fi) 1989-12-07

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