DE3301914C2 - - Google Patents
Info
- Publication number
- DE3301914C2 DE3301914C2 DE19833301914 DE3301914A DE3301914C2 DE 3301914 C2 DE3301914 C2 DE 3301914C2 DE 19833301914 DE19833301914 DE 19833301914 DE 3301914 A DE3301914 A DE 3301914A DE 3301914 C2 DE3301914 C2 DE 3301914C2
- Authority
- DE
- Germany
- Prior art keywords
- liquid crystal
- light
- display device
- crystal display
- light guide
- 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 - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims description 22
- 210000002858 crystal cell Anatomy 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 9
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000003086 colorant Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the cell
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)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
Die vorliegende Erfindung betrifft eine Flüssigkristall Anzeigevorrichtung nach dem Oberbegriff des Patent anspruchs 1.The present invention relates to a liquid crystal Display device according to the preamble of the patent claim 1.
Eine solche Anzeigevorrichtung ist aus der GB 20 43 979 A bekannt.Such a display device is from the GB 20 43 979 A known.
Die Verwendung von fluoreszierenden Filtern zwischen Flüssigkristall- Zelle und Beleuchtungseinrichtung ist aus der DE 30 22 543 A1 bekannt. Aus der GB-PS 20 94 051 A ist es bekannt, zwischen einer Flüssigkristall-Anzeige und einer Beleuchtungsquelle eine lichtstreuende Platte einzufügen. Aus der DE 79 22 167 U1 ist eine Fluoreszenzplatte bekannt, auf deren einer Flüssigkristall-Zelle zugewandten Oberfläche Pigmentschichten angebracht sind. The use of fluorescent filters between liquid crystal Cell and lighting device is from the DE 30 22 543 A1 known. From GB-PS 20 94 051 A it is known between a liquid crystal display and a lighting source insert a light-diffusing plate. From the DE 79 22 167 U1 discloses a fluorescent plate, on one of which Liquid crystal cell facing surface pigment layers are attached.
Bei diesen bekannten Anordnungen wird als nachteilig angesehen, daß zur Auskoppelung des Lichts aus dem Lichtleiter zur Reflexion des einfallenden Umgebungslichtes und zur Einfärbung des transmissiven Lichtes aus dem Lichtleiter getrennte Medien (Schichten) vorgesehen werden müssen, die jeweils ihren eigenen Anteil an Absorption verbrauchen.In these known arrangements, it is considered disadvantageous that to decouple the light from the light guide for reflection of the incident ambient light and for coloring the transmissive light from the light guide separate media (Layers) must be provided, each their own Consume portion of absorption.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Flüssigkristall-Anzeigeanordnung der eingangs genannten Art bezüglich des vorgenannten Nachteils zu verbessern.The present invention has for its object a Liquid crystal display arrangement of the type mentioned to improve on the aforementioned disadvantage.
Diese Aufgabe wird durch die im Kennzeichen des Patentan spruches 1 angegebenen Merkmale gelöst.This task is carried out by the in the characterizing part of the patent Proof 1 specified features solved.
Die beschriebene Anzeigevorrichtung ist besonders für Anzeigen geeignet, die unter sehr unterschiedlichen Licht verhältnissen betrachtet werden und deshalb sowohl im Auflicht als auch im Durchlicht betrieben werden. Solche stark wechselnde Verhältnisse kommen z. B. in Fahrzeugen vor. Vorteilhaft ist auch, daß die beschriebene Vorrichtung einfach im Zuge einer automatisierten Fertigungsstraße herstellbar ist. The display device described is particularly for Ads suitable under very different light conditions are considered and therefore both in Incident light as well as transmitted light can be operated. Such strongly changing conditions come z. B. in vehicles in front. It is also advantageous that the device described simply in the course of an automated production line can be produced.
Anhand des in der Figur schematisch dargestellten Ausfüh rungsbeispiels wird die Erfindung nachfolgend näher erläu tert.Based on the embodiment shown schematically in the figure Example, the invention is explained in more detail below tert.
Die Figur zeigt in Seitenansicht eine Flüssigkristallzelle 1 mit zwei elektrisch ansteuerbaren Anzeigebereichen 3. Um sowohl einen Auflicht- als auch einen Durchlichtbetrieb zu ermöglichen, ist auf der Rückseite, also der dem Betrach ter 6 zugewandten Seite die Fluoreszenzfolie (4) vorge sehen.The figure shows a side view of a liquid crystal cell 1 with two electrically controllable display areas 3 . In order to enable both incident light and transmitted light operation, the fluorescent film ( 4 ) is provided on the back, ie the side facing the viewer 6 .
Im Durchlichtbetrieb wird die Flüssigkristallzelle 1 mittels der Lichtquelle 7 und des Lichtleiters 2 von hinten beleuchtet. Das in den Lichtleiter 2 von der Licht quelle 7 eingestrahlte Licht tritt an Lichtaustrittsfen stern 8 aus und beleuchtet die Anzeigebereiche 3 von hinten. Die Lichtaustrittsfenster 8 besitzen im wesent lichen die gleiche Flächenausdehnung wie die Anzeigebe reiche 3.In transmitted light mode, the liquid crystal cell 1 is illuminated from behind by means of the light source 7 and the light guide 2 . The light radiated into the light guide 2 from the light source 7 emerges at light exit windows 8 and illuminates the display areas 3 from behind. The light exit windows 8 have in wesent union the same surface area as the display areas 3 .
Gemäß der Erfindung sind nun zwischen Lichtleiter 2 und Flüssigkristallzelle 1 Fluoreszenzfolien 4 eingefügt, deren Flächenausdehnung ebenfalls den Lichtaustrittsflä chen 8 und damit den Anzeigebreichen 3 entspricht. Diese fluoreszierenden Folien 4 bzw. Folienteile 4 sind licht teildurchlässig und in der gewünschten Farbe eingefärbt.According to the invention, fluorescent foils 4 are now inserted between the light guide 2 and the liquid crystal cell 1 , the surface area of which also corresponds to the light exit surfaces 8 and thus corresponds to the display areas 3 . These fluorescent foils 4 or foil parts 4 are partially translucent and colored in the desired color.
Die Folien 4 sind derart auf der der Flüssigkristallzelle 1 zugewandten Oberfläche des Lichtleiters 2 angebracht, daß sie gleichzeitig als Lichtaustrittsfenster 8 wirken. Dies ist z. B. durch Verwendung eines entsprechenden Klebers möglich. The foils 4 are attached to the surface of the light guide 2 facing the liquid crystal cell 1 in such a way that they simultaneously act as a light exit window 8 . This is e.g. B. possible by using an appropriate adhesive.
Durch die Fluoreszenzeigenschaften der Folie 4 werden die UV-Lichtanteile aus der Lichtquelle 7 in die Strahlung der gewünschten Farbe umgewandelt. Bei Auflichtbetrieb wirkt die Folie 4 ausreichend undurchlässig, um die farbige Rückstreuung zu gewährleisten.The fluorescent properties of the film 4 convert the UV light components from the light source 7 into the radiation of the desired color. In reflected light mode, the film 4 is sufficiently opaque to ensure the colored backscattering.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833301914 DE3301914A1 (en) | 1983-01-21 | 1983-01-21 | Liquid crystal display device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833301914 DE3301914A1 (en) | 1983-01-21 | 1983-01-21 | Liquid crystal display device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3301914A1 DE3301914A1 (en) | 1984-07-26 |
DE3301914C2 true DE3301914C2 (en) | 1993-02-11 |
Family
ID=6188828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833301914 Granted DE3301914A1 (en) | 1983-01-21 | 1983-01-21 | Liquid crystal display device |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3301914A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536825A1 (en) * | 1995-09-20 | 1997-03-27 | Dsd Dynamisch Statische Displa | Brighter, lower-cost optical display unit for e.g. traffic warnings |
DE10220335A1 (en) * | 2002-05-07 | 2003-11-27 | Siemens Ag | display |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3627697A1 (en) * | 1986-08-14 | 1988-02-25 | Bosch Gmbh Robert | DISPLAY DEVICE WITH LIQUID CRYSTAL CELL, PREFERABLY FOR MOTOR VEHICLES |
DE3916790A1 (en) * | 1988-07-15 | 1990-01-18 | Pioneer Electronic Corp | Display device |
NO172369C (en) * | 1990-06-21 | 1993-07-07 | Neosign As | ADHESIVE, FLUORESCING FILM |
US6104452A (en) * | 1994-07-01 | 2000-08-15 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
US5682213A (en) * | 1994-07-01 | 1997-10-28 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
GB9600595D0 (en) * | 1996-01-11 | 1996-03-13 | Screen Tech Ltd | Liquid crystal cell |
DE10211270B4 (en) * | 2002-03-13 | 2008-11-06 | Continental Automotive Gmbh | display |
DE102006014394A1 (en) | 2006-03-29 | 2007-10-11 | GM Global Technology Operations, Inc., Detroit | Head-up display, motor vehicle and method for operating a head-up display |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7922167U1 (en) * | 1979-10-31 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Passive electro-optical display device, in particular liquid crystal display | |
US4229783A (en) * | 1979-03-12 | 1980-10-21 | Timex Corporation | Backlight for electrooptic display |
US4470666A (en) * | 1979-06-18 | 1984-09-11 | General Motors Corporation | Colored liquid crystal display |
GB2094051A (en) * | 1981-02-28 | 1982-09-08 | Thorn Emi Ltd | Display device |
-
1983
- 1983-01-21 DE DE19833301914 patent/DE3301914A1/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19536825A1 (en) * | 1995-09-20 | 1997-03-27 | Dsd Dynamisch Statische Displa | Brighter, lower-cost optical display unit for e.g. traffic warnings |
DE10220335A1 (en) * | 2002-05-07 | 2003-11-27 | Siemens Ag | display |
DE10220335B4 (en) * | 2002-05-07 | 2006-05-24 | Siemens Ag | display |
Also Published As
Publication number | Publication date |
---|---|
DE3301914A1 (en) | 1984-07-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8120 | Willingness to grant licenses paragraph 23 | ||
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: AEG GESELLSCHAFT FUER MODERNE INFORMATIONSSYSTEME |