EP1592998A1 - Dispositif d'affichage transflectif avec affichage noir/blanc ou gris dans un mode de fonctionnement reflechissant - Google Patents

Dispositif d'affichage transflectif avec affichage noir/blanc ou gris dans un mode de fonctionnement reflechissant

Info

Publication number
EP1592998A1
EP1592998A1 EP04704562A EP04704562A EP1592998A1 EP 1592998 A1 EP1592998 A1 EP 1592998A1 EP 04704562 A EP04704562 A EP 04704562A EP 04704562 A EP04704562 A EP 04704562A EP 1592998 A1 EP1592998 A1 EP 1592998A1
Authority
EP
European Patent Office
Prior art keywords
display device
substrate
transparent substrate
electrodes
liquid crystal
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.)
Withdrawn
Application number
EP04704562A
Other languages
German (de)
English (en)
Inventor
Markus Baur
Armin Toth
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1592998A1 publication Critical patent/EP1592998A1/fr
Withdrawn legal-status Critical Current

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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133553—Reflecting elements
    • G02F1/133555—Transflectors
    • 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

Definitions

  • the present invention relates to a transflective display device which, in particular in a transmissive operating mode, provides a color display, while in a reflective operating mode it provides a black and white display or a grayscale display.
  • liquid crystal display or LCD Liquid Cristal Display
  • Molecules of liquid crystals have an elongated oval shape and align in parallel without external influences. Furthermore, they have the property of aligning themselves in the direction of the structure on grooved structured surfaces.
  • liquid crystals LC can be aligned in the neic phase due to their molecular structure on groove-shaped structured surfaces OF1, OF2, which serve here as alignment layers, and can be twisted spirally due to their mechanical properties if they are inserted between two alignment layers rotated by 90 ° (shown here by arrows a and b of the surfaces OF1 and OF2).
  • Twisted Ne atic with a twist angle of 90 °
  • STN Super Twisted Nematic
  • a liquid crystal display device two polarizers and at least two electrodes are required, in the overlapping area of which a pixel section is realized.
  • the first or rear polarizer Pl polarized light z. B. from a backlight
  • the second or front polarizer P2 analyzer
  • the light can therefore penetrate to a viewer (downwards in the figure).
  • an electric field is generated by a voltage source VOL and applied to the liquid crystal molecules LC via the alignment layers ARL (corresponding to the surfaces OF1 and OF2 of FIG. 1), the liquid crystal molecules LC are oriented according to the electric field out.
  • Light that now falls on the liquid crystal arrangement shown in FIG. 2B is first polarized by the polarizer P1, then penetrates the upper alignment layer ARL and then again follows the orientation of the liquid crystals.
  • the plane of polarization of the light is not rotated by 90 °, as in FIG. 2A, it cannot move downwards, i.e. H. penetrate through the second polarizer P2. It is thus possible to influence the optical properties (in particular with regard to transmissivity) of the liquid crystal arrangement by electrical control.
  • a conventional liquid crystal display device comprises a large number of such pixel sections by means of the targeted control of graphic patterns, such as alphanumeric characters, symbols, graphics, photos, etc., which can be displayed on the liquid crystal display device.
  • the liquid crystal display device comprises a first transparent substrate, for example made of glass, on which a first polarizer is applied. She also has one second transparent substrate, on which a second polarizer is applied, the polarization plane of which is rotated by 90 ° to that of the first polarizer. There is a layer of liquid crystals between the two substrates.
  • a matrix-like arrangement of electrodes is provided, for example row electrodes on the first substrate and column electrodes on the second substrate.
  • a pixel section can thus be defined which can be selectively controlled electrically.
  • AMLCD active matrix liquid crystal display
  • PMLCD passive matrix liquid crystal display
  • each pixel section is controlled via its own thin-film transistor (TFT), which stores the information for the respective pixel section.
  • TFT thin-film transistor
  • a specific color filter is assigned to each individual pixel section, and there are conventionally three types of color filters, namely a red, a yellow and a blue. Three pixel sections with these three different color filters are then combined to form a picture element (pixel).
  • a transflective display device In addition to the transmissive operating mode of a liquid crystal display device described so far, in which light from a backlight through a first polarizer or a first substrate is let into the display device and, after being influenced by the liquid crystal layer in a pixel section, again through the second substrate or the second polarizer If graphic patterns are omitted, a transflective display device also has a reflective operating mode. In this case, light from a backlight is not let in through the first polarizer (the first substrate), but ambient light penetrates through the second polarizer (the second substrate) into the display device, crosses the liquid crystal layer and is finally replaced by a transflective layer, which advantageously is applied to the first substrate, reflected.
  • This transflective layer has reflection elements for reflecting light and furthermore has through recesses or slots for transmitting light (which is to be transmitted in the direction of the second substrate originating from a backlight).
  • FIGS. 3 and 4 A liquid crystal display device with a conventional arrangement of the individual components will now be explained schematically below with reference to FIGS. 3 and 4, in which respective cross-sectional views of a liquid crystal display device are shown.
  • FIG. 3 shows a liquid crystal display device AI in which, for illustration, three pixel sections BPA1, BPA2 and BPA3 (identified by vertical dashed lines) each have different color filters FF1 (with the color red), FF2 (with the color yellow) and FF3 (with the color blue) are shown.
  • the respective pixel sections are in the overlap area of a first electrode E1 and three electrodes running perpendicular thereto E21, E22 and E23 realized.
  • the electrodes are made of a transparent material, such as indium oxide, tin oxide (ITO).
  • the electrode El is arranged on a first transparent substrate S1, on the opposite side of which a first polarizer P1 is applied.
  • the electrodes E21, E22 and E23 are applied to a second transparent substrate S2, on the opposite side of which a second polarizer P2 is applied. Furthermore, reflection elements R1, R2 and R3 are advantageously on the first electrode as part of a transflective element
  • a respective color filter FF1, FF2 and FF3 being provided on a respective reflection element.
  • a part of a respective color filter FF1, FF2 and FF3 overlaps with a respective reflection element, while a further part protrudes beyond the respective reflection element.
  • a layer of liquid crystals is then provided between the color filters FF1 to FF3 and the respective second electrode E21 to E23 (which has been omitted in the drawing for reasons of clarity).
  • a transmissive operating mode of the liquid crystal display AI in which light (identified by three obliquely upward arrows) is provided by a light source for backlighting, this light penetrates through the first polarizer P1 and the first transparent substrate S1 into the liquid crystal display and meets the reflection elements Rl to R3, on which it is reflected back again, and the parts of the respective color filters that protrude beyond the reflection elements.
  • the conventionally white background light (identified by the letter "W" at the foot of a respective arrow) is filtered through these protruding parts of the color filter and can then be actuated by the second one with appropriate activation of a respective pixel section (via the electrodes El, E21, E22, E23) transparent substrate S2 and the second pole lariser P2 (up in the figure) can be omitted again.
  • FIG. 4 now shows the same liquid crystal display device AI as in FIG. 3, a reflective operating mode of the display device now being explained here.
  • light from a backlight is not let in through the first polarizer P1 and the first substrate S1, but ambient light (usually white ambient light, identified by the letter "W") penetrates through the second polarizer P2 and the second substrate S2 into the display device, traverses the respective second electrodes and the liquid crystal layer and finally strikes a respective color filter FF1 to FF3.
  • the light now traverses a respective color filter for the first time on the way (downward in the figure) to a respective reflection element R1 to R3, is reflected by a reflection element and finally crosses the color filter a second time, so that in the end a filtered one Light is released from the display device or the second polarizer P2, which corresponds to the color of the color filter just passed.
  • a display device has a first transparent substrate for admitting light from a backlight, the first transparent substrate being provided with first electrodes. Furthermore, the display device has a second transparent substrate for transmitting or omitting light, which has been modified or influenced in the display device, the second transparent substrate being provided with second electrodes. An electro-optical material is provided between the first and the second transparent substrate. In addition, the display device
  • Pixel sections which are provided in overlapping regions of the respective first and second electrodes and each have a reflection element for reflecting light let in through the second substrate and a color filter element for filtering and transmitting the light let in through the first substrate in the direction of the second substrate.
  • a color filter element can have a section or part that overlaps the reflection element and a part that protrudes beyond the reflection element, wherein light can pass through this protruding part through the color filter element from the first towards the second substrate.
  • the reflection element is arranged on the side of the second substrate and the color filter element on the side of the first substrate.
  • Such an arrangement has the effect that light in the transmissive mode of the display device can now penetrate the display device through the first transparent substrate, strikes a respective color filter of a pixel section, is blocked depending on the control of the pixel section via the electrodes, or is transmitted in the direction of the second substrate is a color display with colored graphic patterns on the outside or outer surface for a user provide.
  • the reflective operating mode on the other hand, in which light is admitted into the display device through the second transparent substrate, the light now strikes the respective reflection elements of the pixel sections after crossing the electro-optical material and is reflected by them.
  • the light is blocked according to the control of the pixel sections via the electrodes or is again let out through the second substrate in order to provide a display (of graphic patterns) for a user on the outside thereof.
  • the display device according to the invention in the reflective mode represents only a grayscale display (of graphic patterns).
  • the contrast is used here and the brightness of the display are significantly improved, which improves the readability of the display, be it that the graphic patterns are characters, symbols, graphics or photos.
  • the display device can furthermore have a first polarizer which is assigned to and applied to the first transparent substrate, and have a second polarizer which is assigned to and applied to the second transparent substrate and a polarization plane perpendicular to that of the first Has polarizers.
  • the polarizers can be applied on the respective inner surface (i.e. on the side of the electro-optical material) or outer surface of the respective substrates.
  • the electro-optical material can comprise a layer of liquid crystals.
  • the first electrodes are arranged parallel to one another and run in a first direction, while the second electrodes are also arranged parallel to one another and run in a second direction perpendicular to the first direction.
  • a matrix-shaped electrode arrangement with column electrodes and row electrodes can be implemented, the pixel sections in the overlapping areas of the electrodes being electrically controllable.
  • the first and second electrodes advantageously consist of a transparent material, such as indium tin oxide (ITO).
  • the display device is in the form of an active matrix liquid crystal display, in particular in the form of a TFT (thin film transistor) liquid crystal display, or in the form of a passive matrix liquid crystal display, in particular in the form of a CSTN (Color Super Twisted Nematic) liquid crystal display is trained.
  • TFT thin film transistor
  • CSTN Color Super Twisted Nematic
  • the display device has its own light source, which is arranged adjacent to the first transparent substrate or the first polarizer on the opposite side of the electro-optical material.
  • the light source is arranged outside the actual image-generating device and serves to provide light which is required for realizing a display of graphic patterns in the transmissive mode of the display device.
  • the color filter elements advantageously comprise the colors red, yellow and blue, with three adjacent pixel sections each with the colors red, yellow and blue representing a color image element.
  • an electrical device which has a display device according to the above illustration or advantageous refinements thereof includes. It is possible for the electrical device to have a device-specific light source for providing backlighting for the display device, the device-specific light source being arranged on the side of the first transparent substrate. In this case, a display device-own light source can be omitted.
  • the electrical device is preferably designed as a mobile device, in particular as a mobile telephone or mobile radio device, as a portable computer, such as a PDA (Personal Digital Assistant) or a watch, etc.
  • FIG. 1 is a schematic representation of liquid crystal molecules arranged between two alignment layers;
  • FIGS. 2A and 2B show a schematic illustration of the essential components of a liquid crystal display
  • FIG. 3 shows a schematic cross-sectional view of a conventional transflective liquid crystal display which is currently being operated in the transmissive operating mode
  • FIG. 4 shows a schematic illustration of the same display device as in FIG. 3, a reflective operating mode being shown here;
  • FIG. 5 shows a schematic cross-sectional view of a liquid crystal display according to a preferred embodiment of the present invention, a transmissive operating mode being shown in FIG. 5;
  • FIG. 6 shows the same liquid crystal display as in FIG. 5, a reflective operating mode being shown here;
  • Figure 7 is a schematic representation of an electrical
  • Device is implemented in the execution of a mobile device or mobile phone
  • Figure 8 is a schematic representation of an electrical device in the implementation of a small portable computer.
  • FIG. 5 shows a schematic cross-sectional view of the essential components of a transflective liquid crystal display device A2.
  • the liquid crystal display device A2 comprises a first transparent substrate S1 and a second transparent substrate S2, between which an electro-optical material in the form of a liquid crystal layer LC is arranged. Glass substrates are advantageously used as the transparent first and second substrates.
  • a polarizer P1 is applied to the outer surface of the first transparent substrate S1, while a first electrode El is applied to the inside.
  • On the second transparent substrate S2 there is a polarizer P2 on the outer surface and respective electrodes E21, E22 and E23 are applied on the inner surface.
  • the display device A2 has, in addition to the electrodes shown in the figure, further electrodes, that is to say further first electrodes which are arranged parallel to electrode E1 on the first substrate S1 and further second electrodes which are parallel to the electrodes E21, E22 and E23 are arranged on the second substrate S2.
  • the first and second electrodes form a matrix-like structure with row electrodes and column electrodes.
  • respective pixel sections BPA1, BPA2 and BPA3 are realized, which are identified by vertical dashed lines.
  • the pixel sections are not limited to the space between the electrodes, but relate to an area of the display device that can be controlled individually and has a respective reflection element or color filter element.
  • the pixel section BPAl comprises a first reflection element R1 and a first color filter element FF1 representing the color "red”
  • the second pixel section BPA2 comprises a second reflection element R2 and a second color filter element FF2 representing the color "yellow”
  • the third pixel section BPA3 comprises a third reflection element R3 and a third color filter element FF3 representing the color "blue”.
  • the respective reflection elements have an almost 100% reflection property and are made of aluminum, for example. It is possible for the reflection elements to be formed as part of a transflective layer which is applied over the color filter elements.
  • This transflective layer comprises the reflection elements and has passage recesses or slots between the reflection elements through which light can penetrate.
  • the color filter elements are arranged in such a way that they have an area overlapping with the respective reflection element and have a part which projects beyond the reflection elements.
  • Characteristic of this preferred embodiment is that the reflection elements are arranged on the side of the second substrate, while the color filter elements on the side of the first substrate, ie on the entry side of light from a backlight (in the figure from below).
  • liquid crystal display device A2 If the liquid crystal display device A2 is now operated in the transmissive mode, as shown in FIG. 5, light (identified by three arrows running obliquely to the top left) is emitted from a light source LQ for background lighting in the figure from below into the display device embedded in the first polarizer P1, penetrates the transparent substrate S1 and the first electrode El and meets a respective color filter element FF1 to FF3.
  • the light source LQ which in the figure is below the actual imaging part of the liquid crystal display device A2, i.e.
  • the first transparent substrate S1 or the first polarizer P1 is arranged on the side of the first transparent substrate S1 or the first polarizer P1, for example one or more LEDs (LED: light-emitting diode) or can have a light guide which receives light from an LED or a light tube and according to the figure feeds the imaging part.
  • LED light-emitting diode
  • the normally white light from the light source or backlight (identified by the letter W) at the origin of an arrow representing a backlight is filtered accordingly in a respective color filter element FF1 to FF3 and now passes through the layer LC of liquid crystals, the respective second electrodes E21 to E23 and the second transparent substrate and emerges from the display device through the second polarizer P2 in the color of the continuous color filter.
  • the prerequisite for this is that the pixels BPAl to BPA3 are controlled via the electrodes E1 or E21 to E23 in such a way that light can pass through.
  • the transmissive operating mode in which a light source for backlighting is provided on the side of the first substrate S1 or the first polarizer P1, one on the side of the second substrate or its assigned second polarizer colored display with colored graphic patterns can be provided.
  • the three pixel sections BPA1, BPA2, BPA3 shown by way of example in the figure represent a (colored) picture element or pixel.
  • a reflective operating mode of the display device will now be explained below with reference to FIG. 6. For reasons of better illustration, only the reference numbers necessary for understanding are provided in FIG. 6.
  • the transmissive mode in the reflective mode no light of a backlight from the side of the first polarizer P1 or the first substrate S1 penetrates into the display device A2, ie in the reflective mode there is a contrast switched off the light source LQ for transmissive mode.
  • ambient light normally white ambient light, characterized by the letter W from above in the figure
  • the second polarizer P2 penetrates through the second transparent substrate and the respective second electrodes and the layer LC made of liquid crystals and finally meets protruding or protruding parts of the color filter elements through which it can easily pass and the respective reflection elements R1, R2 and R3.
  • the light is reflected directly on these reflection elements without having to go through a respective color filter element twice, as in the prior art (cf. FIG. 4).
  • the white light which has entered the liquid crystal display device A2 is again let out as white light, or no light is left out in a pixel section when a corresponding electric field is applied to the liquid crystal layer LC (characterized by the Letters B / W for black (no light) / white (light) at the end of the outlet part).
  • a corresponding electric field is applied to the liquid crystal layer LC (characterized by the Letters B / W for black (no light) / white (light) at the end of the outlet part).
  • the reflective operating mode of the display device A2 no color display with colored graphic patterns is provided on the outer surface of the second polarizer P2 (ie the display surface) assigned to the second substrate, but a black and white display or a grayscale display.
  • the incoming ambient light in the reflective operating mode of the display device does not have to pass through a color filter element twice (once before reflection on a reflection element and once after reflection on the reflection element), the intensity of the light is less attenuated and the display device A2 provides a black-and-white display or grayscale display with greater brightness and higher contrast, so that the readability of graphic patterns such as symbols, characters, graphics or images is improved.
  • the service life of an electrical device comprising the display device A2 can thus be extended.
  • the special design of the pixel sections in which a respective reflection element is arranged on the side of the second substrate and the corresponding color filter element on the side of the first substrate or on the side of the light source LQ, in transmissive mode (with the light source switched on ) a color display is provided, while in the reflective mode (with the light source switched off) a black and white display or a grayscale display with high brightness and high contrast is provided.
  • a display device according to the invention can be used in an electrical device, as is shown schematically in FIGS. 7 and 8.
  • a display device AZ according to the present invention (for example the display device A2) can be provided in an electrical device EG1, which is designed in the form of a mobile radio device or mobile telephone, as shown in FIG. 7.
  • a display device AZ according to the present invention can also be used in an electrical device EG2 in the form of a portable computer, in particular in the form of a PDA, as shown in FIG. 8.

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)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

La présente invention concerne un dispositif d'affichage transflectif comprenant un premier substrat transparent (S1) qui sert à faire entrer la lumière dans un système d'éclairage d'arrière plan (LQ), le premier substrat transparent comprenant des premières électrodes (E1). Le dispositif d'affichage (A2) comprend également un second substrat transparent (S2) qui sert à afficher des motifs graphiques, le second substrat transparent comprenant de secondes électrodes (E21, E22, E23). Entre le premier et le second substrat se trouve un matériau optoélectrique notamment sous la forme d'une couche de cristaux liquides (LC). Le dispositif d'affichage comprend de plus des sections de points d'image (BPA1, BPA2,BPA3) qui se trouvent dans des zones de recouvrement des premières et secondes électrodes respectives, et présentent respectivement un élément réfléchissant (R1, R2, R3) qui sert à réfléchir la lumière entrant par le second substrat et un élément de filtrage de couleurs (FF1, FF2, FF3) qui sert à filtrer et à laisser passer de la lumière entrant par le premier substrat en direction de second substrat, l'élément réfléchissant se trouvant sur des côtés du second substrat et l'élément de filtrage de couleurs se trouvant sur des côtés du premier substrat. Cela permet, lorsque le dispositif d'affichage est en mode de fonctionnement de transmission, d'obtenir un affichage de motifs graphiques, alors qu'on obtient un affichage noir/blanc ou gris à contraste élevé et luminosité élevée en mode de fonctionnement de réflexion.
EP04704562A 2003-02-14 2004-01-23 Dispositif d'affichage transflectif avec affichage noir/blanc ou gris dans un mode de fonctionnement reflechissant Withdrawn EP1592998A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10306291A DE10306291B3 (de) 2003-02-14 2003-02-14 Transflektive Anzeigevorrichtung
DE10306291 2003-02-14
PCT/EP2004/000579 WO2004072716A1 (fr) 2003-02-14 2004-01-23 Dispositif d'affichage transflectif avec affichage noir/blanc ou gris dans un mode de fonctionnement reflechissant

Publications (1)

Publication Number Publication Date
EP1592998A1 true EP1592998A1 (fr) 2005-11-09

Family

ID=32747868

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04704562A Withdrawn EP1592998A1 (fr) 2003-02-14 2004-01-23 Dispositif d'affichage transflectif avec affichage noir/blanc ou gris dans un mode de fonctionnement reflechissant

Country Status (8)

Country Link
US (1) US20060145946A1 (fr)
EP (1) EP1592998A1 (fr)
JP (1) JP2006515079A (fr)
KR (1) KR20050097950A (fr)
CN (1) CN1751262A (fr)
DE (1) DE10306291B3 (fr)
TW (1) TW200415415A (fr)
WO (1) WO2004072716A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060139522A1 (en) * 2004-12-27 2006-06-29 Toppoly Optoelectronics Corp. Transflective liquid crystal display device with balanced chromaticity
KR100851181B1 (ko) * 2007-04-11 2008-08-08 삼성에스디아이 주식회사 액정표시장치
US9070325B2 (en) 2007-10-04 2015-06-30 Nokia Technologies Oy Reflective area blocking feature for displays
CN110007506A (zh) * 2019-03-29 2019-07-12 上海天马微电子有限公司 反射型显示面板和反射型显示装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2001A (en) * 1841-03-12 Sawmill
US2002A (en) * 1841-03-12 Tor and planter for plowing
GB2296807A (en) * 1994-12-29 1996-07-10 Sharp Kk Illumination system
US6727967B2 (en) * 1998-10-15 2004-04-27 Kabushiki Kaisha Toshiba Transelective lcd in which reflected light passes through color filters twice, transmitted light passes through color filter only once, but also passes through additional layer of cholesteric liquid crystal or band-pass filter
KR100586242B1 (ko) * 2000-01-06 2006-06-02 엘지.필립스 엘시디 주식회사 반사투과형 액정표시장치와 그 제조방법
US6530981B2 (en) * 2000-07-25 2003-03-11 Scotlund Stivers Electroinertial gas cleaner
JP3700611B2 (ja) * 2001-06-07 2005-09-28 セイコーエプソン株式会社 半透過反射型電気光学装置及び電子機器
JP2003043239A (ja) * 2001-07-27 2003-02-13 Seiko Epson Corp カラーフィルタ基板及びその製造方法並びに液晶表示装置
JP3705192B2 (ja) * 2001-10-24 2005-10-12 セイコーエプソン株式会社 液晶表示装置および電子機器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004072716A1 *

Also Published As

Publication number Publication date
JP2006515079A (ja) 2006-05-18
CN1751262A (zh) 2006-03-22
DE10306291B3 (de) 2004-08-26
WO2004072716A1 (fr) 2004-08-26
TW200415415A (en) 2004-08-16
US20060145946A1 (en) 2006-07-06
KR20050097950A (ko) 2005-10-10

Similar Documents

Publication Publication Date Title
DE102006028322B4 (de) Flüssigkristallanzeigevorrichtung und Herstellungsverfahren
DE69933386T2 (de) Reflektierende/transmittierende dualmodus-flüssigkristrallanzeige
DE102006029909B4 (de) Flüssigkristall-Anzeigevorrichtung mit In-Plane Schaltungsmodus mit einstellbarem Betrachtungswinkel und Verfahren zum Herstellen derselben
DE69929001T2 (de) Flüssigkristallvorrichtung und elektronischen gerät
DE69305393T2 (de) Flüssigkristall-Farbanzeigerät
DE19749138C2 (de) Flüssigkristallanzeigeeinheit
DE602005003503T2 (de) Flüssigkristallanzeigevorrichtung
DE602005002583T2 (de) Flüssigkristall-Anzeigenvorrichtung
DE69434011T2 (de) Aktiv-Matrix-Flüssigkristallanzeigesystem
DE60022728T2 (de) Anzeigegerät mit Farbfilter und Verfahren zur dessen Herstellung
DE112019002422B4 (de) Elektronisches Gerät
DE102006028994A1 (de) Flüssigkristallanzeige-Panel und Verfahren zur Herstellung desselben
DE19813490A1 (de) Verfahren zur Erzeugung von zwei Domänen innerhalb einer Flüssigkristallschicht, LCD-Vorrichtung und Verfahren zur Herstellung dieser Vorrichtung
DE60126876T2 (de) Flüssigkristallvorrichtung und damit versehenes elektronisches Gerät
DE112019002882B4 (de) Elektronische Vorrichtung, in die eine Anzeigevorrichtung eingebaut ist, und Programm
EP1746456A2 (fr) Dispositif d affichage à cristaux liquides
DE102009059186B4 (de) Elektrophoretische Anzeigevorrichtung mit einem Lichtsensor
DE102009044335A1 (de) Flexibles Flüssigkristalldisplay
DE112016004400B4 (de) Arraysubstrat, Flüssigkristallanzeigetafel und Flüssigkristallanzeigevorrichtung
DE69433614T2 (de) Anzeigevorrichtung mit aktiver matrix
DE102015117817A1 (de) Anordnungssubstrat und Flüssigkristall-Anzeigefeld
DE69112930T2 (de) Flüssigkristallanzeigevorrichtung.
DE102019004088A1 (de) Anzeigepanel und anzeigevorrichtung
DE19925985A1 (de) Flüssigkristallanzeige mit umschaltbarem Blickwinkel
DE10306291B3 (de) Transflektive Anzeigevorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20050718

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20060503