DE2209194A1 - DISPLAY DEVICE - Google Patents
DISPLAY DEVICEInfo
- Publication number
- DE2209194A1 DE2209194A1 DE19722209194 DE2209194A DE2209194A1 DE 2209194 A1 DE2209194 A1 DE 2209194A1 DE 19722209194 DE19722209194 DE 19722209194 DE 2209194 A DE2209194 A DE 2209194A DE 2209194 A1 DE2209194 A1 DE 2209194A1
- Authority
- DE
- Germany
- Prior art keywords
- display device
- semiconductor
- semiconductor body
- zones
- fresnel lens
- 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.)
- Pending
Links
Classifications
-
- 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
- G09F9/33—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 semiconductor devices, e.g. diodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Led Device Packages (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Description
"Anzeigegerät" Die Erfindung betrifft ein Anzeigegerät, bestehend aus einem oder mehreren Haibleiterkörpern mit Lumineszenzelementen. "Display device" The invention relates to a display device consisting of from one or more semiconductor bodies with luminescent elements.
Ein solches Anzeigegerät ist beispielsweise ein Zahlendisplay, welches aus einem Halbleiterkörper mit diffundierten Haibleiterzonen besteht, die mit dem Haibleiterkörper pu-Übergänge bzw Leuchtdioden und damit Lumineszenzelemente bilden. Diese diffundierten Haibleiterzonen sind derart im Halbleiterkörper angeordnet, daß sie zu bestimmten Zahlen zusammengesetzt werden können, die im Leuchhzustand sichtbar werden. Die Haibleiterzonen sind dabei einzeln oder in bestimmten Kombinationen elektrisch ansteuerbar.Such a display device is, for example, a number display which consists of a semiconductor body with diffused semiconductor zones, which with the Semiconductor bodies form pu junctions or light emitting diodes and thus luminescent elements. These diffused semiconductor zones are arranged in the semiconductor body in such a way that that they can be put together to form definite numbers that are in the luminous state become visible. The semiconductor zones are individually or in certain combinations electrically controllable.
Es ist bereits bekannt, die Lesbarkeit von Zahlendisplays durch stark gewölbte Epoxylinsen zu verbessern, die auf die Displays aufgegossen werden. Der Erfindung liegt die Aufgabe zugrunde, die Lesbarkeit demgegenüber noch zu verbessern Zur Lösung dieser Aufgabe wird bei einem Anzeigegerät der eingangs erwähnten Art nach der Erfindung vorgeschlagen, daß dem Halbleiterkörper auf der Leuchtseite eine Fresnellinse vorgeschaltet ist.It is already known that the readability of number displays is strong Enhance curved epoxy lenses that are poured onto the displays. Of the The invention is based on the problem of improving readability To solve this problem, in a display device of the type mentioned above proposed according to the invention that the semiconductor body on the luminous side a Fresnel lens is connected upstream.
Unter einer Fresnellinse versteht man bekanntlich einen Linsentyp für Sammellinsen mit großem Öffnungsverhältnis.As is well known, a Fresnel lens is understood to be a type of lens for converging lenses with a large aperture ratio.
Eine Fresnellinse besteht aus einer zentralen, gewöhnlich dünnen Linse und nach außen anschließenden, etwa gleich starken, ringförmigen Zonen, deren Krümmungsradien so gewählt sind, daß die Brennpunkte aller Zonen zusammenfallen. Die inneren Zonen wirken brechend, die äußeren werden zur Steigerung des Öffnungsverhältnisses reflektierend ausgebildet Alle vom Brennpunkt ausgehenden Strahlen bis zur Höhe der obersten Zone werden parallel gerichtet, so daß der Lichtstrom voll ausgenutzt wird.A Fresnel lens consists of a central, usually thin lens and outwardly adjoining, approximately equally thick, annular zones, their radii of curvature are chosen so that the focal points of all zones coincide. The inner zones have a refractive effect, the outer ones become reflective to increase the aperture ratio developed All rays emanating from the focal point up to the level of the uppermost zone are directed parallel so that the luminous flux is fully utilized.
Die bei der Anordnung nach der Erfindung vorgesehene Fresnellinse ist vorzugsweise flach ausgebildet Nach der Erfindung sind beispielsweise folienförmige Fresnellinsen vorgesehen. Die Fresnellinse wird beispielsweise auf den Halbleiterkörper aufgeklebt Die Erfindung wird im folgenden an einem Ausführungsbei spiel näher erläutert.The Fresnel lens provided in the arrangement according to the invention is preferably flat. According to the invention, for example, are film-shaped Fresnel lenses provided. The Fresnel lens is, for example, on the semiconductor body glued on The invention is explained in more detail below using a Ausführungsbei game.
Die Figur 1 zeigt ein Zahlen-Dsplay, welches aus einem Halbleiterkörper 1 mit siegen Elementen 2 besteht die auch als Segmente bezeichnes @erden. Die Elemente 2 bestehen aus Halbleiterzonen, die in den Halbleitarkörper eindiffundiert sind und den entgegengesetzten Leitungstyp aufweisen wie der Halbleiterkörper. Dadurch entstchen zwischen dem Halbleiterkörper und den Halbleiterzonen pn-Ubergänge. Die Eindiffusion der Halbleiterzonen 2 erfolgt durch Öffnungen in einer auf dem Halbleiterkörper befindlichen Isolierschicht 3 Legt man zwischen den Halbleiterkörper 1 und sämtliche Halbleiterzonen 2 z.B. eine Sperrspannung, so leuchten sämtliche Halbleiterzonen auf und ergeben somit entsprechend ihrer in der Figur 1 dargestilten Anordnung eine leuchtende 8" als Ziffer. Wie die Figur 2 zeigt, bestehen die einzelnen Elemente 2 in Wirklichkeit nicht aus einer zusammenhängenden Diffusionszone, sondern aus einzelnen Halbleitrzonen 2a, die voneiander getrennt sind.FIG. 1 shows a number display which consists of a semiconductor body 1 with winning elements 2 consists of @erden also known as segments. The Elements 2 consist of semiconductor zones which are diffused into the semiconductor body and have the opposite conductivity type as the semiconductor body. Through this pn junctions arise between the semiconductor body and the semiconductor zones. the The semiconductor zones 2 are diffused in through openings in one on the semiconductor body Located insulating layer 3 is placed between the semiconductor body 1 and all Semiconductor zones 2 e.g. a reverse voltage, then all semiconductor zones light up and thus result accordingly their shown in Figure 1 Arrangement a luminous 8 "as a number. As Figure 2 shows, the individual Elements 2 in reality not from a coherent diffusion zone, but of individual semiconductor zones 2a, which are separated from one another.
Die Kontaktierung dieser Halbleiterzonen 2a erfolgt durch eine Kammelektrode 4, die beispielsweise das untere waagrechte Element der Anordnung der Figur 1 kontaktiert.These semiconductor zones 2a are contacted by a comb electrode 4, which contacts the lower horizontal element of the arrangement of FIG. 1, for example.
Die Erfindung besteht nun bei einer solchen Anordnung darin, daß dem Zahlen-Display gemäß der Figur 3 eine Frsnellinse 5 vorgeschaltet ist, die gemäß der Figur 3 im Abstand vom Halbleiterkörper angeordnet oder gemäß der Figur 4 unmittelbar auf den Halbleiterkörper aufgebracht siin kann.The invention consists in such an arrangement that the A Frsnel lens 5 is connected upstream of the numerical display according to FIG. 3, which according to FIG 3 arranged at a distance from the semiconductor body or according to FIG. 4 directly can be applied to the semiconductor body.
Durch die Fresnellinse werden die Zahlen vergrößert und die Lesbarkeit wird erhöht.The Fresnel lens enlarges the numbers and makes them easier to read will be raised.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722209194 DE2209194A1 (en) | 1972-02-26 | 1972-02-26 | DISPLAY DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722209194 DE2209194A1 (en) | 1972-02-26 | 1972-02-26 | DISPLAY DEVICE |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2209194A1 true DE2209194A1 (en) | 1973-08-30 |
Family
ID=5837228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19722209194 Pending DE2209194A1 (en) | 1972-02-26 | 1972-02-26 | DISPLAY DEVICE |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2209194A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2655833A1 (en) * | 1975-12-08 | 1977-06-16 | Savage Jun | LENS HOLDER FOR LIGHTING DIODE ARRANGEMENTS |
DE2929809A1 (en) * | 1978-07-25 | 1980-02-07 | Sanyo Electric Co | DISPLAY DEVICE |
EP0204572A1 (en) * | 1985-06-05 | 1986-12-10 | Matsushita Electric Industrial Co., Ltd. | Light-emitting device for automatic focus adjustment apparatus |
WO2002007230A1 (en) * | 2000-07-19 | 2002-01-24 | Qinetiq Limited | Light emitting diodes |
EP1191608A2 (en) * | 2000-09-12 | 2002-03-27 | LumiLeds Lighting U.S., LLC | Light emitting diodes with improved light extraction efficiency |
US7847480B2 (en) | 2002-05-17 | 2010-12-07 | Ccs, Inc. | Light emitting diode unit and method for manufacturing light emitting diode unit |
US8049234B2 (en) | 2000-09-12 | 2011-11-01 | Philips Lumileds Lighting Company Llc | Light emitting devices with improved light extraction efficiency |
-
1972
- 1972-02-26 DE DE19722209194 patent/DE2209194A1/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2655833A1 (en) * | 1975-12-08 | 1977-06-16 | Savage Jun | LENS HOLDER FOR LIGHTING DIODE ARRANGEMENTS |
DE2929809A1 (en) * | 1978-07-25 | 1980-02-07 | Sanyo Electric Co | DISPLAY DEVICE |
EP0204572A1 (en) * | 1985-06-05 | 1986-12-10 | Matsushita Electric Industrial Co., Ltd. | Light-emitting device for automatic focus adjustment apparatus |
US4758764A (en) * | 1985-06-05 | 1988-07-19 | Matsushita Electric Industrial Co., Ltd. | Light-emitting device for automatic focus adjustment apparatus |
WO2002007230A1 (en) * | 2000-07-19 | 2002-01-24 | Qinetiq Limited | Light emitting diodes |
EP1191608A3 (en) * | 2000-09-12 | 2009-04-22 | LumiLeds Lighting U.S., LLC | Light emitting diodes with improved light extraction efficiency |
EP1191608A2 (en) * | 2000-09-12 | 2002-03-27 | LumiLeds Lighting U.S., LLC | Light emitting diodes with improved light extraction efficiency |
US8049234B2 (en) | 2000-09-12 | 2011-11-01 | Philips Lumileds Lighting Company Llc | Light emitting devices with improved light extraction efficiency |
US8415694B2 (en) | 2000-09-12 | 2013-04-09 | Philips Lumileds Lighting Company Llc | Light emitting devices with improved light extraction efficiency |
US8628985B2 (en) | 2000-09-12 | 2014-01-14 | Philips Lumileds Lighting Company Llc | Light emitting devices with improved light extraction efficiency |
US9583683B2 (en) | 2000-09-12 | 2017-02-28 | Lumileds Llc | Light emitting devices with optical elements and bonding layers |
US10312422B2 (en) | 2000-09-12 | 2019-06-04 | Lumileds Llc | Light emitting devices with optical elements and bonding layers |
US7847480B2 (en) | 2002-05-17 | 2010-12-07 | Ccs, Inc. | Light emitting diode unit and method for manufacturing light emitting diode unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
E77 | Valid patent as to the heymanns-index 1977 |