DE3301914A1 - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- DE3301914A1 DE3301914A1 DE19833301914 DE3301914A DE3301914A1 DE 3301914 A1 DE3301914 A1 DE 3301914A1 DE 19833301914 DE19833301914 DE 19833301914 DE 3301914 A DE3301914 A DE 3301914A DE 3301914 A1 DE3301914 A1 DE 3301914A1
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 30
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 15
- 239000011888 foil Substances 0.000 claims abstract description 7
- 238000004040 coloring Methods 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003973 paint 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)
Abstract
Description
Beschreibungdescription
Flüssigkristall-Anzeigevorrichtung Die vorliegende Erfindung betrifft eine Flüssigkristall-Anzeigevorrichtung für Durchlicht- und Auflichtbetrieb mit einem hinter der Flüssigkristallzelle angeordneten Lichtleiter, in den Licht eingestrahlt wird, das an den Anzeigebereichen der Flüssigkristallzelle entsprechenden Oberflächenbereichen aus dem Lichtleiter austritt.Liquid crystal display device The present invention relates to a liquid crystal display device for transmitted light and reflected light operation with a light guide arranged behind the liquid crystal cell, into which light is radiated the surface areas corresponding to the display areas of the liquid crystal cell exits the light guide.
Es sind bereits Flüssigkristall-Anzeigevorrichtungen für Durchlichtbetrieb bekannt, auf deren Rückseite ein Lichtleiter angeordnet ist, in den Licht -eingestrahlt wird und aus dem an den Anzeige'bereichen der FlüssigkTistallzelle entsprechenden Flächenbereichen Licht austritt. Es ist weiter bekannt, auf der der der Flüssigkristallzelle zugewandten Oberflächen des Lichtleiters Farbauftragungen, die auch fluoreszierende Eigenschaften haben können, aufzubringen. Es ist weiter bekannt, auf der Rückseite von Flüssigkristallzellen Fluoreszenzf-arbbereiche aufzubringen.There are already liquid crystal display devices for transmitted light operation known, on the back of which a light guide is arranged, into which light -einradiated and from the one corresponding to the display areas of the liquid crystal cell Surface areas light emerges. It is further known on that of the liquid crystal cell facing surfaces of the light guide paint applications, which are also fluorescent Properties may have to apply. It is further known on the back to apply fluorescent colored areas of liquid crystal cells.
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 drei getrennte Medien (Schichten) vorgesehen werden müssen, die jeweils ihren eigenen Anteil an Absorption verbrauchen.In these known arrangements is considered to be disadvantageous that for decoupling the light from the light guide to reflect the incident ambient light and three separate ones for coloring the transmissive light from the light guide Media (layers) must be provided, each having its own share of it Consume absorption.
Der vorliegenden Erfindung liegt die Aufgabe'zugrunde, eine Flüssigkristall-Anzeigeanordnung der eingangs genannten Art bezüglich der vorgenannten Nachteile zu verbes--sern.The present invention is based on the object of a liquid crystal display arrangement of the type mentioned at the beginning with regard to the aforementioned disadvantages.
Gemäß der Erfindung wird vorgeschlagen, daß im Strahlengang zwischen den Lichtleiter-Austrittsflächen und der Rückseite der Flüssigkristallzelle eine lichtteildurchlässige, farbige und fluoreszierende Folie angeordnet ist, die auf dem Lichtleiter derart aufgebracht ist, daß sie gleichzeitig als farbiges Auskoppelfenster und als teildurchlässiger Reflektor dient. Dabei entspricht die Folie in ihrer Flächenausdehnung der Flächenausdehnung der Lichtaustritts fläche und gleichzeitig dem jeweiligen Anzeigebereich.According to the invention it is proposed that in the beam path between the light guide exit surfaces and the back of the liquid crystal cell partially translucent, colored and fluorescent film is arranged on the the light guide is applied in such a way that it is also used as a colored coupling-out window and serves as a partially transparent reflector. The area of the film corresponds to this the area of the light emitting surface and at the same time the respective Display area.
Die beschriebene Anzeigevorrichtung ist besonders für Anzeigen geeignet, die unter sehr unterschiedlichen Lichtverhältnissen 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 suitable for displays which are viewed under very different lighting conditions and therefore can be operated both in incident light and in transmitted light. Such strongly changing Relationships come z. B. in vehicles. It is also advantageous that the described Device is easy to manufacture in the course of an automated production line.
Anhand des in der Figur schematisch dargestellten Ausführungsbeispiels wird die Erfindung nachfolgend näher erläutert.On the basis of the exemplary embodiment shown schematically in the figure the invention is explained in more detail below.
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 Betrachter 6 zugewandten Seite die Fluoreszenzfolie (4) vorgesehen.The figure shows a side view of a liquid crystal cell 1 with two electrically controllable display areas 3. To have both a reflected light and a To enable transmitted light operation is on the back, i.e. that of the viewer 6 facing side the fluorescent film (4) is provided.
Im Durchlichtbetrieb wird die Flüs-sigkristallzelle 1 mittels der Lichtquelle 7 und des Lichtleiters 2 von hinten beleuchtet. Das in den Lichtleiter 2 von der Lichtquelle 7 eingestrahlte Licht tritt. an Lichtaustrittsfenstern 8 aus und beleuchtet die Anzeigebereiche 3 von hinten. Die Lichtaustrittsfenster 8 besitzen im wesentlichen die gleiche Flächenausdehnung wie die Anzeigebereiche 3.In transmitted light mode, the liquid crystal cell 1 is activated by means of the Light source 7 and the light guide 2 illuminated from behind. That in the light guide 2 light radiated from the light source 7 occurs. at light exit windows 8 and illuminates the display areas 3 from behind. Have the light exit window 8 essentially the same area as the display areas 3.
Gemäß der Erfindung sind nun zwischen Lichtleiter 2 und Flüssigkristallzelle 1 Fluoreszenzfolien 4 eingefügt, deren Flächenausdehnung ebenfalls den Lichtaustrittsflächen 8 und damit den Anzeigebreichen 3 -entspricht. Diese fluoreszierenden Folien 4 bzw. Folienteile 4 sind lichtteildurchlässig und in der gewünschten Farbe eingefärbt.According to the invention, there are now between the light guide 2 and the liquid crystal cell 1 fluorescent films 4 inserted, the 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.The foils 4 are in this way on the surface facing the liquid crystal cell 1 of the light guide 2 attached so that it also acts as a light exit window 8 works.
Dies ist z. B. durch Verwendung eines entsprechenden Klebers möglich.This is e.g. B. possible by using an appropriate adhesive.
Durch die Kluoreszenzeigenschaften 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 UV light components are due to the Kluoreszen properties of the film 4 converted from the light source 7 into the radiation of the desired color. With incident light operation the film 4 is sufficiently impermeable to ensure the colored backscatter.
- Leerseite -- blank page -
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 true DE3301914A1 (en) | 1984-07-26 |
DE3301914C2 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 (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988001399A1 (en) * | 1986-08-14 | 1988-02-25 | Robert Bosch Gmbh | Display apparatus with liquid crystal cells, preferably for motor vehicles |
DE3916790A1 (en) * | 1988-07-15 | 1990-01-18 | Pioneer Electronic Corp | Display device |
WO1991020070A1 (en) * | 1990-06-21 | 1991-12-26 | Neosign As | Adhesive, fluorescent foil |
US5682213A (en) * | 1994-07-01 | 1997-10-28 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
US6104452A (en) * | 1994-07-01 | 2000-08-15 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
US6191834B1 (en) * | 1996-01-11 | 2001-02-20 | Screen Technology Limited | Liquid crystal cell |
FR2837315A1 (en) * | 2002-03-13 | 2003-09-19 | Siemens Ag | Motor vehicle instrument panel has background with luminous surface covered with colored translucent layer |
FR2839578A1 (en) * | 2002-05-07 | 2003-11-14 | Siemens Ag | Display device, comprises display field in a surrounding field formed by a luminous surface element with a translucent layer configured so to form symbols for side display |
US7762703B2 (en) | 2006-03-29 | 2010-07-27 | Gm Global Technology Operations, Inc. | Heads-up display, motor vehicle and method of operating a heads-up display |
Families Citing this family (1)
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 |
Citations (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 | |
GB2043979A (en) * | 1979-03-12 | 1980-10-08 | Timex Corp | Backlight for electrooptic display devicee |
DE3022543A1 (en) * | 1979-06-18 | 1981-01-22 | Gen Motors Corp | 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
Patent Citations (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 | |
GB2043979A (en) * | 1979-03-12 | 1980-10-08 | Timex Corp | Backlight for electrooptic display devicee |
DE3022543A1 (en) * | 1979-06-18 | 1981-01-22 | Gen Motors Corp | LIQUID CRYSTAL DISPLAY |
GB2094051A (en) * | 1981-02-28 | 1982-09-08 | Thorn Emi Ltd | Display device |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1988001399A1 (en) * | 1986-08-14 | 1988-02-25 | Robert Bosch Gmbh | Display apparatus with liquid crystal cells, preferably for motor vehicles |
US4965564A (en) * | 1986-08-14 | 1990-10-23 | Robert Bosch Gmbh | Display apparatus with liquid crystal cells, preferably for motor vehicles |
DE3916790A1 (en) * | 1988-07-15 | 1990-01-18 | Pioneer Electronic Corp | Display device |
US5469186A (en) * | 1988-07-15 | 1995-11-21 | Pioneer Electronic Corporation | Display device with face plate responsive to multiple wave length beams |
WO1991020070A1 (en) * | 1990-06-21 | 1991-12-26 | Neosign As | Adhesive, fluorescent foil |
US5682213A (en) * | 1994-07-01 | 1997-10-28 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
US6104452A (en) * | 1994-07-01 | 2000-08-15 | Adaptive Optics Associates, Inc. | Optical illuminator for liquid crystal displays |
US6191834B1 (en) * | 1996-01-11 | 2001-02-20 | Screen Technology Limited | Liquid crystal cell |
FR2837315A1 (en) * | 2002-03-13 | 2003-09-19 | Siemens Ag | Motor vehicle instrument panel has background with luminous surface covered with colored translucent layer |
FR2839578A1 (en) * | 2002-05-07 | 2003-11-14 | Siemens Ag | Display device, comprises display field in a surrounding field formed by a luminous surface element with a translucent layer configured so to form symbols for side display |
US7762703B2 (en) | 2006-03-29 | 2010-07-27 | Gm Global Technology Operations, Inc. | Heads-up display, motor vehicle and method of operating a heads-up display |
Also Published As
Publication number | Publication date |
---|---|
DE3301914C2 (en) | 1993-02-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69912125T2 (en) | LOW-LOSS AREA DIFFUSION FILMS FOR A BACKLIT DISPLAY AND METHOD FOR THEIR APPLICATION | |
DE69724411T3 (en) | LIGHTING DEVICE AND DISPLAY WHICH IT USES | |
DE68918586T2 (en) | DISPLAY DEVICE PROVIDED WITH AN EMITTER PLATE SHINING IN OVER AN END OF THE FACE, WITH A FLUORESCENT LUMINOUS FLUORESCENT. | |
DE3528718A1 (en) | LIGHT SCREENING DEVICE | |
DE4211047A1 (en) | LIGHT-GENERATING DEVICE FOR A LIQUID CRYSTAL DISPLAY | |
DE3022543A1 (en) | LIQUID CRYSTAL DISPLAY | |
DE2946191A1 (en) | COLORED LIGHT, e.g. FOR LUMINOUS ADVERTISING, EXTERIOR AND INTERIOR LIGHTING | |
DE202006020673U1 (en) | Playback device | |
DE3301914A1 (en) | Liquid crystal display device | |
EP1701203B1 (en) | Flat panel display | |
DE3233699T1 (en) | Liquid crystal display device | |
DE112019002950T5 (en) | Display device and head-up display device | |
CH667345A5 (en) | LIGHT ADVERTISING AND INFORMATION DEVICE. | |
DE2242316B2 (en) | Windscreen visual measurement parameter display arrangement - consists of liquid crystal elements mounted in or on windscreen and is independent of ambient light intensity | |
WO2009052992A2 (en) | Light guide device, illumination device with a light guide device of said kind and method for the production of a light guide device of said kind | |
EP2709088B1 (en) | Lamp | |
DE2808268C2 (en) | Display device with a plate-shaped light valve and a fluorescent plate | |
DE3302156C2 (en) | Lighting device for a transmissively operable passive display | |
DE9217383U1 (en) | Light guide plates for illuminating interchangeable information | |
DE2619368A1 (en) | Alphanumeric liq. crystal display - includes fluorescent plate having light apertures each with dielectric reflector | |
DE102008028497A1 (en) | Device for illuminated presentation | |
AT390851B (en) | DEVICE FOR THE PRESENTATION OF INFORMATION, DISPLAYS, NOTES ETC. | |
DE3130937A1 (en) | Liquid crystal display | |
EP3762228B1 (en) | Laminated pane containing a functional element and lighting | |
DE4219294A1 (en) | Indicator light for emergency use |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8120 | Willingness to grant licences 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 |