DE3740647C2 - Liquid crystal display with two display cells arranged one behind the other - Google Patents
Liquid crystal display with two display cells arranged one behind the otherInfo
- Publication number
- DE3740647C2 DE3740647C2 DE3740647A DE3740647A DE3740647C2 DE 3740647 C2 DE3740647 C2 DE 3740647C2 DE 3740647 A DE3740647 A DE 3740647A DE 3740647 A DE3740647 A DE 3740647A DE 3740647 C2 DE3740647 C2 DE 3740647C2
- Authority
- DE
- Germany
- Prior art keywords
- display
- cell
- liquid crystal
- display cell
- behind
- 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.)
- Revoked
Links
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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
-
- 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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13475—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell
-
- 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
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13725—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on guest-host interaction
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13731—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition
- G02F1/13737—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition in liquid crystals doped with a pleochroic dye
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
-
- 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
- G02F2203/00—Function characteristic
- G02F2203/09—Function characteristic transflective
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)
- Liquid Crystal (AREA)
Description
Die Erfindung bezieht sich auf eine Flüssigkristallanzeige mit zwei hintereinan der angeordneten Anzeigezellen, zwischen denen ein Transflektor angeordnet ist, wobei die vordere Anzeigezelle eine Guest-Host-Flüssigkristallzelle ist, mit einer Lichtquelle, durch die die hintere Anzeigezelle von ihrer Rückseite her beleuchtbar ist, mit jeweils einer hinter einer Bildelektrode der vorderen Anzei gezelle fluchtend angeordneten und gleichzeitig ansteuerbaren Bildelektrode gleicher Konfiguration der hinteren Anzeigezellen.The invention relates to a liquid crystal display with two in a row of the arranged display cells, between which a transflector is arranged with the front display cell being a guest host liquid crystal cell, with a light source through which the rear display cell from its rear can be illuminated, each with an image electrode behind the front display perfectly aligned and simultaneously controllable picture electrode same configuration of the rear display cells.
Bei derartiger Flüssigkristallanzeige (DE-OS 35 20 954) ist es bekannt, nicht nur die vordere, sondern auch die hintere Anzeigezelle als Guest-Host-Anzei gezellen auszubilden. Eine solche Ausbildung hat den Nachteil, daß kein hoher Kontrast zwischen den Bereichen der angesteuerten Bildelektroden und nicht angesteuerten Anzeigebereichen der Flüssigkristallanzeige erreichbar ist und daß es zu Paralaxefehlern zwischen den vorderen und den hinteren Bildelek troden bei der Betrachtung der Flüssigkristallanzeige kommt.In such a liquid crystal display (DE-OS 35 20 954) it is not known only the front, but also the rear display cell as a guest-host display to train cells. Such training has the disadvantage that no high Contrast between the areas of the driven image electrodes and not controlled display areas of the liquid crystal display is accessible and that there are paralax errors between the front and rear image elec troden comes when viewing the liquid crystal display.
Aufgabe der Erfindung ist es, eine transflektiv betreibbare Flüssigkristallanzeige zu schaffen, die eine Darstellung der Bereiche der angesteuerten Bildelektro den mit hohem Kontrast zu den umgebenden nicht angesteuerten Anzeigebe reichen, insbesondere im Reflektivbetrieb ermöglicht, eine geringe Blickwin kelabhängigkeit aufweist und über einen geringen Paralaxefehler im Trans missivbetrieb besitzt.The object of the invention is a transflective liquid crystal display to create a representation of the areas of the driven image electro the one with high contrast to the surrounding uncontrolled display area range, especially in reflective mode, allows a low viewing angle kel dependence and a small paralax error in the trans owns missive operation.
Weiterhin ist aus der DE-OS 32 43 614 eine Flüssigkristallanzeige bekannt, bei der zwei nicht näher definierte Anzeigezellen hintereinander angeordnet sind.Furthermore, a liquid crystal display is known from DE-OS 32 43 614, at of which two display cells, not defined in more detail, are arranged one behind the other.
Aus der JP 57-37330 (A) ist eine Flüssigkristallanzeige mit zwei hintereinander angeordneten Anzeigezellen bekannt, von denen die vordere Anzeigezelle eine Guest-Host-Flüssigkristallzelle und die hintere Anzeigezelle eine TN-Zelle ist. JP 57-37330 (A) is a liquid crystal display with two in a row arranged display cells known, of which the front display cell one Guest host liquid crystal cell and the rear display cell is a TN cell.
Diese Aufgabe wird erfindungsgemaß dadurch gelöst, daß die hintere Anzeige zelle eine TN-Anzeigezelle, die vordere Anzeigezelle eine Phase-Change Guest-Host-Anzeigezelle und der Transflektor ein streuender Transflektor ist.This object is achieved in that the rear display cell a TN display cell, the front display cell a phase change Guest host display cell and the transflector is a scattering transflector.
Durch diese Ausgestaltung wird eine sowohl reflektiv als auch transmissiv betreibbare Flüssigkristallanzeige erreicht, die sowohl eine geringe Blickwinkelabhängigkeit als auch ein hohes Kontrastverhältnis aufweist. Gleichzeitig wird auch der Paralaxefehler zwischen den beiden Anzeigezellen gering gehalten.This configuration makes it both reflective and transmissive Operable liquid crystal display achieved both a low Viewing angle dependency as well as a high contrast ratio. At the same time, the paralax error between the two display cells kept low.
Diese sehr kontraststarke Anzeigezelle bewirkt im Transmissivbetrieb einen hohen Gesamtkontrast der Flüssigkristallanzeige, bei der die Blickwinkelab hängigkeit sehr stark reduziert ist. Gleichzeitig wird dadurch ein guter Kontrast im Reflektivbetrieb und ein verringerter Paralaxefehler im Transmissivbetrieb erreicht.This very high-contrast display cell causes one in transmissive mode high overall contrast of the liquid crystal display, in which the viewing angles dependency is greatly reduced. At the same time, this creates a good contrast in reflective mode and a reduced parallax error in transmissive mode reached.
Durch die von Transflektor, insbesondere einem isotropstreuenden Transflektor entstehende diffuse Lichtstreuung werden die Zeichen der hinteren Anzeigezelle auf der Vorderseite des Transflektors mit leicht verschwommenen Konturen dargestellt, so daß der Paralaxefehler zwischen den beiden Anzeigezellen nicht weiter reduziert ist.By using the transflector, especially an isotropic scattering transflector The resulting diffuse light scattering becomes the sign of the rear Display cell on the front of the transflector with slightly blurred Contours shown so that the paralax error between the two Display cells is not further reduced.
Bei der Verwendung der TN-Zelle als hinterer Zelle, wird die durch die Polarisatoren der TN-Zelle erzeugte Lichtpolarisation von dem isotropstreuenden Transflektor zu unregelmäßig gestreutem Licht depolarisiert und damit die Blickwinkelabhängigkeit der TN-Zelle weitgehend aufgehoben. Somit erfolgt auch keine blickwinkelabhängige Beeinflussung des Gesamtbildes der Anzeige.If the TN cell is used as the rear cell, it is replaced by the Polarizers of the TN cell generated light polarization from that isotropic scattering transflector depolarized to irregularly scattered light and thus largely removed the viewing angle dependency of the TN cell. Thus, there is no viewing angle-dependent influencing of the overall picture the ad.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Die einzige Figur der Zeichnung zeigt eine Flüssigkristallanzeige im Querschnitt. An embodiment of the invention is shown in the drawing. The only figure of the drawing shows a liquid crystal display in cross section.
Die dargestellte Flüssigkristallanzeige besteht aus einer vorderen Anzeigezelle 1 und einer hinteren Anzeigezelle 2, die hintereinander angeordnet sind und zwischen denen ein isotropstreuender Transflektor 3 angeordnet ist. Auf der einem Beobachter abgewandten Seite der Flüssigkristallanzeige ist eine Lichtquelle 4 zum transmissiven Betrieb der Anzeige angeordnet, deren Lichtverlauf durch den Strahl 5 dargestellt ist. Bei ausgeschalteter Lichtquelle 4 erfolgt der Betrieb der Anzeige entsprechend dem dargestellten Strahl 6 reflektiv.The liquid crystal display shown consists of a front display cell 1 and a rear display cell 2 , which are arranged one behind the other and between which an isotropically scattering transflector 3 is arranged. A light source 4 for the transmissive operation of the display is arranged on the side of the liquid crystal display facing away from an observer, the light path of which is represented by the beam 5 . When the light source 4 is switched off, the display is operated reflectively in accordance with the beam 6 shown .
Die vordere Anzeigezelle 1 ist eine Phase-Change-Guest-Host-Anzeigezelle, die auf dem zellenraumseitig jeweils vorderen transparenten Substrat 7, Bildelektroden 8 und 8′ trägt.The front display cell 1 is a phase change guest host display cell, which carries on the cell room side in each case front transparent substrate 7 , image electrodes 8 and 8 '.
Auf der Zellenraumseite ihres hinteren transparenten Substrats 7 ist ganzflächig eine Rückelektrode 10 angeordnet. Der zwischen den Substraten 7 und 9 gebildete Zellenraum 11 ist mit einer Flüssigkristallsubstanz gefüllt.A back electrode 10 is arranged over the entire area on the cell space side of its rear transparent substrate 7 . The cell space 11 formed between the substrates 7 and 9 is filled with a liquid crystal substance.
Die hintere Anzeigezelle 2 ist eine TN-Anzeigezelle, mit einem vorderen transparenten Substrat 12 und einem hinteren transparenten Substrat 13, zwischen denen ein mit Flüssigkristallsubstanz gefüllter Zellenraum 14 gebildet ist.The rear display cell 2 is a TN display cell, with a front transparent substrate 12 and a rear transparent substrate 13 , between which a cell space 14 filled with liquid crystal substance is formed.
Auf den dem Zellenraum 14 abgewandten Seiten der Substrate 12 und 13 sind Polarisatoren 15 angeordnet, während das vordere Substrat 12 zellenraumseitig Bildelektroden 16 und 16′ und das hintere Substrat 13 zellenraumseitig eine ganzflächige Rückelektrode 17 trägt.On the sides of the substrates 12 and 13 facing away from the cell space 14 , polarizers 15 are arranged, while the front substrate 12 has image electrodes 16 and 16 'on the cell space side and the rear substrate 13 has a full-area rear electrode 17 on the cell space side.
Die Bildelektroden 8 und 16 weisen dieselbe Konfiguration auf und sind fluchtend hintereinander angeordnet. Desgleichen weisen auch die Bildelektroden 8′ und 16′ dieselbe Konfiguration auf und sind ebenfalls fluchtend hintereinander angeordnet.The image electrodes 8 and 16 have the same configuration and are aligned one behind the other. Likewise, the image electrodes 8 'and 16 ' have the same configuration and are also aligned one behind the other.
Claims (1)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3740647A DE3740647C2 (en) | 1987-12-01 | 1987-12-01 | Liquid crystal display with two display cells arranged one behind the other |
| JP63301122A JPH02829A (en) | 1987-12-01 | 1988-11-30 | Liquid crystal display device |
| KR1019880015990A KR890010597A (en) | 1987-12-01 | 1988-12-01 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3740647A DE3740647C2 (en) | 1987-12-01 | 1987-12-01 | Liquid crystal display with two display cells arranged one behind the other |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3740647A1 DE3740647A1 (en) | 1989-06-15 |
| DE3740647C2 true DE3740647C2 (en) | 1996-05-09 |
Family
ID=6341625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE3740647A Revoked DE3740647C2 (en) | 1987-12-01 | 1987-12-01 | Liquid crystal display with two display cells arranged one behind the other |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH02829A (en) |
| KR (1) | KR890010597A (en) |
| DE (1) | DE3740647C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19906483A1 (en) * | 1999-02-17 | 2000-09-07 | Mannesmann Vdo Ag | Liquid crystal display |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5283563A (en) * | 1990-03-20 | 1994-02-01 | General Electric Company | Backlighting of nematic curvilinear aligned phase liquid crystal display panels |
| KR100828531B1 (en) * | 2002-07-26 | 2008-05-13 | 삼성전자주식회사 | Liquid crystal display |
| JP2017116683A (en) * | 2015-12-24 | 2017-06-29 | エルジー ディスプレイ カンパニー リミテッド | Liquid crystal display device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3243614A1 (en) * | 1982-11-25 | 1984-05-30 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Liquid crystal display device |
| US4637687A (en) * | 1984-06-14 | 1987-01-20 | General Electric Company | Cascaded, dual cell transflective liquid crystal display |
-
1987
- 1987-12-01 DE DE3740647A patent/DE3740647C2/en not_active Revoked
-
1988
- 1988-11-30 JP JP63301122A patent/JPH02829A/en active Pending
- 1988-12-01 KR KR1019880015990A patent/KR890010597A/en not_active Application Discontinuation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19906483A1 (en) * | 1999-02-17 | 2000-09-07 | Mannesmann Vdo Ag | Liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| KR890010597A (en) | 1989-08-09 |
| DE3740647A1 (en) | 1989-06-15 |
| JPH02829A (en) | 1990-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8110 | Request for examination paragraph 44 | ||
| D2 | Grant after examination | ||
| 8363 | Opposition against the patent | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: MANNESMANN VDO AG, 60326 FRANKFURT, DE |
|
| 8331 | Complete revocation |