WO2002005021A1 - Affichage a cristaux liquide - Google Patents

Affichage a cristaux liquide Download PDF

Info

Publication number
WO2002005021A1
WO2002005021A1 PCT/JP2001/006041 JP0106041W WO0205021A1 WO 2002005021 A1 WO2002005021 A1 WO 2002005021A1 JP 0106041 W JP0106041 W JP 0106041W WO 0205021 A1 WO0205021 A1 WO 0205021A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
liquid crystal
crystal display
display device
light
Prior art date
Application number
PCT/JP2001/006041
Other languages
English (en)
Japanese (ja)
Inventor
Ken Sumiyoshi
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Publication of WO2002005021A1 publication Critical patent/WO2002005021A1/fr

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
    • G02F1/1336—Illuminating devices
    • G02F1/133617—Illumination with ultraviolet light; Luminescent elements or materials associated to the 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
    • G02F1/133528—Polarisers
    • G02F1/133536—Reflective polarizers
    • 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
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • 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
    • G02F1/133528—Polarisers
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133543—Cholesteric polarisers
    • 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
    • G02F1/133528—Polarisers
    • G02F1/133545—Dielectric stack polarisers
    • 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
    • G02F1/13356—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements
    • G02F1/133565—Structural association of cells with optical devices, e.g. polarisers or reflectors characterised by the placement of the optical elements inside the LC elements, i.e. between the cell substrates

Definitions

  • the present invention relates to a liquid crystal display device.
  • LCDs liquid crystal displays
  • LCDs for monitors are steadily increasing in screen size.
  • many publications have alleviated the viewing angle dependency, which is an issue for large-screen LCDs.
  • image quality performance improvement such as wide viewing angle and moving image display is widely demanded.
  • FIG. 1 shows the structure disclosed in Japanese Patent Publication No. 9-51 1588.
  • a fluorescent layer 63 is provided on a twisted nematic (TN) liquid crystal panel 62 having two polarizing plates 60 and 61. Irradiate ultraviolet light, blue light or near-ultraviolet light from the back of the liquid crystal panel 62. This incident light is modulated by the TN liquid crystal panel 62. The light emitted from the TN liquid crystal panel 62 modulated as described above hits the fluorescent layer 63 and emits fluorescence. Since the fluorescent light is generated almost isotropically, a display that can be viewed from any direction can be obtained.
  • a fluorescent layer 63 and a polarizing plate 60 are formed in glass substrates 65 and 66 as shown in FIG.
  • the configuration shown in FIG. 3 has been proposed which can be easily formed in glass substrates 65 and 66.
  • FIG. 3 The configuration of FIG. 3 will be described.
  • the blue light emitted from the blue light source 67 only the left circularly polarized light passes through the right-handed cholesteric liquid crystal layer 68.
  • This left circularly polarized light becomes linearly polarized light by the ⁇ 4 plate 69 and enters the STN liquid crystal layer 70.
  • the STN liquid crystal layer 70 emits light with linear polarization, the light is converted into right-handed circularly polarized light by the subsequent / 4 plate 71.
  • the right-handed cholesteric liquid crystal layer 72 is disposed, the light is reflected and does not reach the fluorescent layer 63, and does not contribute to display.
  • the STN liquid crystal layer 70 converts linearly polarized light into elliptically polarized light, it can partially pass through the ⁇ / 4 plate 71 and the right-handed cholesteric liquid crystal layer 72. Accordingly, the blue light reaches the fluorescent layer 63, and fluorescence different from the blue light is generated, which contributes to display. 2 and 3 as described above, since the fluorescent layer 63 is formed inside the liquid crystal panel, the correspondence relationship between the fluorescent layer pixels of the liquid crystal panel element described above does not shift.
  • a polarizing plate is produced by dyeing a dichroic dye in a uniaxially stretched polymer. For this reason, the upper limit of heat resistance is about 100 ° C.
  • the formation of each layer, electrode layer and alignment film of the above-mentioned TFT requires a high temperature of 200 ° C or more, and it is almost impossible to make them.
  • the quarter-wave plates 69 and 71 and the cholesteric liquid crystal layers 68 and 72 must be formed inside the liquid crystal panel instead of the polarizing plate. Both layers may have higher heat resistance than the above-mentioned polarizing layers. However, it is practically difficult to create TFT layers, electrode layers, and alignment films that require even higher temperatures.
  • an object of the present invention is to provide a liquid crystal display device capable of obtaining a display screen with a wide viewing angle, high-speed response, and high brightness. Disclosure of the invention
  • a liquid crystal display device comprising a liquid crystal layer, a polarization selection layer, and a fluorescent layer in this order in a path of excitation light.
  • the polarization selection layer may include a cholesteric liquid crystal layer.
  • the polarization selection layer may have an alternating multilayer structure including at least one layer having anisotropy.
  • a liquid crystal panel having the polarization selection layer and the fluorescent layer formed therein may be provided.
  • the liquid crystal panel may include an active element array and a counter substrate facing the active element array via the liquid crystal layer, and the counter substrate may include the polarization selection layer and the fluorescent layer.
  • the opposing substrate may include a flattening layer between the fluorescent layer and the polarization selection layer.
  • the counter substrate may include an alignment layer between the fluorescent layer and the polarization selection layer.
  • the counter substrate may have a wavelength selection layer between the fluorescent layer and the polarization selection layer.
  • the counter substrate may have a lens array.
  • the opposing substrate may have a waveguide array.
  • a light-reducing layer may be provided on the downstream side of the fluorescent layer.
  • the light-reducing layer may include a counter substrate having the polarization selection layer and the fluorescent layer, and the light-reducing layer may be disposed on a surface of the counter substrate.
  • FIG. 1 is a cross-sectional view of an example of a conventional liquid crystal display device.
  • FIG. 2 is a cross-sectional view of another example of the conventional liquid crystal display device.
  • FIG. 3 is a cross-sectional view of still another example of the conventional liquid crystal display device.
  • FIG. 4 is a sectional view of the liquid crystal display device according to the first embodiment of the present invention.
  • FIG. 5 is a diagram for explaining the operation of the liquid crystal display device of FIG.
  • FIG. 6 is a diagram for explaining an example of a deflection selection layer included in the liquid crystal display device of FIG.
  • FIG. 7 is a diagram for explaining a modification of the deflection selection layer included in the liquid crystal display device of FIG.
  • FIG. 8 is a diagram for explaining a modification of the liquid crystal display device of FIG.
  • FIG. 9 is a diagram for explaining another operation of the liquid crystal display device of FIG.
  • FIG. 10 is a diagram for explaining another modification of the liquid crystal display device of FIG.
  • FIG. 11 is a sectional view of a liquid crystal display device according to a second embodiment of the present invention.
  • FIG. 12 is a diagram for explaining a method of manufacturing the liquid crystal display device of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • the liquid crystal display device shown in FIG. 4 includes a liquid crystal panel 10 having an array plate 13 and a facing plate 5 facing each other via a known liquid crystal layer 14.
  • the array plate 13 includes a rectangular glass plate 17, a plurality of active elements 18 mounted on one surface of the glass plate 17, that is, an upper surface, and an alignment film covering the glass plate 17 together with the active elements 18. 19 and has.
  • Each active element 18 is, for example, an amorphous silicon thin film transistor, and can be formed on the glass plate 17 by repeatedly performing a film forming step and a photolithography step.
  • the alignment film 19 is subjected to a well-known rubbing treatment.
  • the opposing substrate 15 includes a rectangular glass plate 21, a plurality of fluorescent layers 22 formed on one surface, that is, a lower surface of the glass plate 21, and an organic layer whose lower surface is planarized by covering the fluorescent layer 22.
  • an alignment film 26 covering the lower surface of the deflection selection layer 24.
  • the phosphor layer 22 is formed by printing a resin containing a phosphor on the glass plate 21. At this time, if the printing is performed three times while changing the kind of the phosphor, the phosphor layer 22 can be made to correspond to the R (red), G (green), and B (blue) color pixels. Since the fluorescent layer 3 experiences a relatively high temperature, it is desirable that the fluorescent layer 3 be made of an inorganic material having excellent heat resistance. Phosphors composed of inorganic substances are usually particles of a few micron squares.
  • the phosphor layer 22 thus produced is excellent in heat resistance, but is often in a rough surface state. Therefore, the unevenness on the surface of the fluorescent layer 22 is filled by providing the flattening layer 24. Rubbing treatment is performed on the surface of the planarization layer 24.
  • the deflection selection layer 24 can be made as follows. On the surface of the flattening layer 24, a solution of a UV-curable cholesteric liquid crystal is applied. The pitch of the cholesteric liquid crystal is adjusted to be about twice the wavelength of the excitation light. Thereafter, the cholesteric liquid crystal is cured by irradiating ultraviolet rays so that a stable structure is obtained. Thus, the polarization selection layer 24 can be obtained.
  • the light-shielding layer 25 can be formed by one photolithography process.
  • the light shielding layer 25 is for preventing fluorescence from the fluorescent layer 22 from being incident on the active element 18. Further, the orientation film 26 is subjected to a rubbing treatment.
  • the above-described array plate 13 and opposing plate 15 are attached to each other so that the rubbing directions are antiparallel. Thereafter, a nematic liquid crystal (homogeneous liquid crystal layer) is injected in a vacuum to seal the liquid crystal, thereby forming a liquid crystal layer 14. At this time, the product of the distance between the array plate 13 and the opposing plate 15 and the refractive index anisotropy of the liquid crystal is set so that switching can be performed in the wavelength range of the excitation light. Thereafter, the polarizing plate 27 is attached to the lower surface of the array plate 13. Further, a light-attenuating film is stuck on the back surface of the counter substrate 15 to form a light-attenuating layer 28.
  • This liquid crystal panel 10 is arranged on a planar excitation light source 33 composed of a light source 31 and a light guide plate 32. Note that a black light is used as the light source 31.
  • the excitation light from the planar excitation light source 33 passes through at least the liquid crystal layer 14, the polarization selection layer 24, and the fluorescent layer 22.
  • the polarization selection layer 24 has a function of reflecting light of a certain polarization state (a) having a certain wavelength and transmitting light of the same wavelength and another polarization state (b).
  • the excitation light 34 in a certain polarization state (c) enters the liquid crystal layer 14 and is converted into a polarization state (a). At this time, since the polarization selection layer 24 reflects this light, it does not reach the fluorescent layer 22 and does not contribute to display.
  • a voltage is applied to the liquid crystal layer 14, its birefringence changes.
  • the liquid crystal display device can perform a display operation with a simple configuration in terms of production.
  • a cholesteric liquid crystal layer 36 having a helical structure as shown in FIG. 6 can be used as an example of the polarization selection layer 24.
  • the cholesteric liquid crystal layer 36 is twisted to the right, it reflects right circularly polarized light 37 and transmits left circularly polarized light 38.
  • the wavelength at this time is determined by the helical pitch of the cholesteric liquid crystal.
  • the azimuthal axis of the cholesteric liquid crystal layer 36 is set by forming an alignment layer immediately before forming the polarization selection layer 24 and performing a subsequent alignment process.
  • a liquid crystal layer 39 having an alternating multilayer structure including at least one layer having anisotropy as shown in FIG. 7 may be used.
  • the liquid crystal layer 39 has two types (x, y) of alternately laminated structures.
  • the refractive indices of the X layer 41 and the y layer 42 differ between the p-polarization direction 43 and the s-polarization direction 44. If the refractive index of the X layer 41 and the refractive index of the y layer 42 are the same in the p-polarization direction 43, the p-polarized light can be transmitted.
  • the refractive index of the X layer 41 and the refractive index of the y layer 42 are different in the s-polarized direction 44, the s-polarized light of a certain wavelength is reflected. This wavelength is determined by the cycle of the alternate lamination.
  • the above-described agreement or mismatch of the refractive indices in the polarization direction can be realized when at least one of the X layer 41 and the y layer 42 is anisotropic.
  • linearly polarized light p-polarized light or s-polarized light
  • the azimuth axis of the liquid crystal layer 39 having the alternating multilayer structure is set by forming an alignment layer immediately before forming the polarization selection layer 24 and performing alignment processing thereafter.
  • a wavelength selection layer 46 between the fluorescent layer 22 and the polarization selection layer 24 on the counter substrate 15.
  • the wavelength selection layer 46 can be formed by using a high refractive index layer and a low refractive index layer and controlling the thickness of each layer. If the wavelength selection layer 16 is designed using this design method, it is possible to transmit the excitation light wavelength and reflect the fluorescence having a longer wavelength than the excitation light wavelength. For this reason, the fluorescent light 5a returning to the polarization selection layer 24 can be reflected by the wavelength selection layer 46 and contribute to display. Therefore, the display can be made brighter.
  • a display device is used under room lighting.
  • the indoor light 47 affects the user's eyes. More specifically, since the surface of the fluorescent layer 22 has an uneven structure, when the room light 47 enters the fluorescent layer 22, it is scattered and becomes scattered light. The user also sees the scattered light at the same time. It is also assumed that the room light 47 becomes excitation light and enters the fluorescent layer 22 to generate new fluorescence. Due to the influence of the room light 47, the user perceives a certain amount of light even if there is no display fluorescence, so that the contrast ratio of the displayed image is reduced.
  • the room light 47 passes through the dimming layer 28 and is incident on the fluorescent layer 22, and the scattered light therefrom passes through the dimming layer 28 again. That is, in order for the room hole 47 to enter the user's eyes, it has to pass through the dimming layer 28 twice.
  • the display fluorescence passes through the dimming layer 28 once and reaches the user's eyes. As a result, the display fluorescence is slightly darkened, but the contrast of the room light 47 is dramatically improved because the light-attenuating layer 28 operates twice.
  • the fluorescent light 35 from the fluorescent layer 22 is generated almost isotropically. Of these, only fluorescent light that can exit the glass plate 21 can be display light. Of the light incident on the interface between the glass plate 21 and the air, only light within a predetermined angle can be emitted into the air. The predetermined angle is determined by the refractive index of the glass plate 21.
  • a lens 48 is formed on the glass plate 21 for each pixel unit, and the optical path is bent by the lens 48 to emit the fluorescent light 35 into the air.
  • FIG. 11 a liquid crystal display device according to a second embodiment of the present invention will be described with reference to FIG. 11 and FIG.
  • the same parts as those in FIG. 4 are denoted by the same reference numerals, and description thereof will be omitted.
  • the array plate 13 can be prepared by the method described above.
  • the fabrication of the opposing plate 15 will be described with reference to FIGS.
  • a high refractive index layer 49 is formed on a glass plate 21 (a).
  • a photoresist layer 50 is formed thereon, and is exposed using a mask 51 (b).
  • the obtained photoresist pattern is subjected to an appropriate heat treatment, and is transformed into a lens shape by closing the riff. (C :).
  • the high refractive index layer 49 is formed (d). This is obtained by etching.
  • the shape of the photo resist pattern 52 can be dug into the high refractive index layer 49 as it is.
  • the remaining portion of the refractive index layer 49 is indicated by reference numeral 49 '(e).
  • a UV-curable low refractive index layer 53 is applied, and a focal length adjusting substrate 54 is bonded to form a lens array (f).
  • the thickness of the focal length adjusting substrate 54 is kept at the focal length of the lens array. Thereby, the fluorescence from the fluorescent layer 22 can be more efficiently collected.
  • the fluorescent layer 22 is printed and applied three times for R, G, and B. Further, a flattening film 23 is applied to flatten the surface of the fluorescent layer 22. Thereafter, a wavelength selection layer 55 is formed by a vacuum evaporation method. For example, a desired wavelength selection layer 55 can be formed by laminating a large number of silicon oxide films and titanium oxide films. An alignment film 56 is applied to this surface, and rubbing is performed.
  • a cholesteric liquid crystal polymer is applied on the alignment film 56 while heating.
  • the pitch of the cholesteric liquid crystal polymer is adjusted to be twice the excitation light wavelength. Thereafter, when the temperature is rapidly returned to room temperature, the cholesteric liquid crystal polymer freezes and becomes stable at room temperature, forming the deflection selection layer 24.
  • a light shielding film 25 is formed and molded.
  • the light shielding film 25 serves to prevent light from entering the active element 18 such as a thin film transistor.
  • An orientation film 26 is further formed on the light-shielding film 25, and rubbing is performed. As described above, the manufacture of the facing plate 15 is completed.
  • the obtained array plate 13 and opposing plate 15 are stuck so that the rubbing directions are antiparallel.
  • a display operation based on the pi-type liquid crystal can be performed.
  • a quarter-wave plate 57 and a polarizing plate 27 are attached to the lower surface of the array plate 13. Also, a dimming layer 28 is stuck on the upper surface of the facing 15. Then, a backlight light source composed of the light source 31 and the light guide plate 32 is arranged to complete the operation. Note that a ferroelectric liquid crystal or an antiferroelectric liquid crystal is used as the liquid crystal layer 14, and a blue light source is used as the light source 31.
  • the liquid crystal display device of the present invention is suitable for a display device such as a computer and a mobile phone.

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

Abstract

Couche de cristaux liquides (14), couche de sélection de polarisation (24) et couche de fluorescence (22) situées dans cet ordre dans un trajet de lumière de pompage. La couche de sélection de polarisation (24) peut consister en une couche de cristaux liquides cholestériques ou en une structure multicouche alternée comprenant une couche présentant au moins une anisotropie. On peut utiliser un panneau à cristaux liquides comportant une couche de sélection de polarisation et une couche de fluorescence.
PCT/JP2001/006041 2000-07-12 2001-07-12 Affichage a cristaux liquide WO2002005021A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000211753A JP2002023145A (ja) 2000-07-12 2000-07-12 液晶表示装置
JP2000-211753 2000-07-12

Publications (1)

Publication Number Publication Date
WO2002005021A1 true WO2002005021A1 (fr) 2002-01-17

Family

ID=18707805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/006041 WO2002005021A1 (fr) 2000-07-12 2001-07-12 Affichage a cristaux liquide

Country Status (2)

Country Link
JP (1) JP2002023145A (fr)
WO (1) WO2002005021A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998734A (zh) * 2012-11-19 2013-03-27 京东方科技集团股份有限公司 图形化延迟器及其制造方法、显示装置
CN103017027A (zh) * 2012-12-04 2013-04-03 京东方科技集团股份有限公司 面光源装置及液晶显示装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2478287A (en) * 2010-03-01 2011-09-07 Merck Patent Gmbh Electro-optical switching element and electro-optical display
WO2012043172A1 (fr) * 2010-10-01 2012-04-05 シャープ株式会社 Substrat phosphore, et dispositif d'affichage et dispositif d'éclairage le comprenant
JP2014132515A (ja) * 2011-04-19 2014-07-17 Sharp Corp 蛍光体基板および表示装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822144A (en) * 1986-12-24 1989-04-18 U.S. Philips Corporation Electro-optic color display including luminescent layer and interference filter
WO1995017691A1 (fr) * 1993-12-21 1995-06-29 Minnesota Mining And Manufacturing Company Polariseur optique
WO1995027920A1 (fr) * 1994-04-06 1995-10-19 Screen Technology Limited Ecran d'affichage
JPH0862602A (ja) * 1994-07-26 1996-03-08 Samsung Electron Devices Co Ltd 表示素子
JPH1152371A (ja) * 1997-07-31 1999-02-26 Nec Corp 液晶表示素子
JPH11109341A (ja) * 1997-09-29 1999-04-23 Toshiba Electronic Engineering Corp 液晶表示装置
JPH11237632A (ja) * 1998-02-24 1999-08-31 Sharp Corp 蛍光型液晶表示装置
JP2000019504A (ja) * 1998-06-26 2000-01-21 Idemitsu Kosan Co Ltd 液晶光学素子
JP2000047184A (ja) * 1998-07-27 2000-02-18 Sharp Corp 液晶表示装置
JP2000081847A (ja) * 1999-09-27 2000-03-21 Toshiba Corp 画像表示装置及び発光装置

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4822144A (en) * 1986-12-24 1989-04-18 U.S. Philips Corporation Electro-optic color display including luminescent layer and interference filter
WO1995017691A1 (fr) * 1993-12-21 1995-06-29 Minnesota Mining And Manufacturing Company Polariseur optique
WO1995027920A1 (fr) * 1994-04-06 1995-10-19 Screen Technology Limited Ecran d'affichage
JPH0862602A (ja) * 1994-07-26 1996-03-08 Samsung Electron Devices Co Ltd 表示素子
JPH1152371A (ja) * 1997-07-31 1999-02-26 Nec Corp 液晶表示素子
JPH11109341A (ja) * 1997-09-29 1999-04-23 Toshiba Electronic Engineering Corp 液晶表示装置
JPH11237632A (ja) * 1998-02-24 1999-08-31 Sharp Corp 蛍光型液晶表示装置
JP2000019504A (ja) * 1998-06-26 2000-01-21 Idemitsu Kosan Co Ltd 液晶光学素子
JP2000047184A (ja) * 1998-07-27 2000-02-18 Sharp Corp 液晶表示装置
JP2000081847A (ja) * 1999-09-27 2000-03-21 Toshiba Corp 画像表示装置及び発光装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102998734A (zh) * 2012-11-19 2013-03-27 京东方科技集团股份有限公司 图形化延迟器及其制造方法、显示装置
CN103017027A (zh) * 2012-12-04 2013-04-03 京东方科技集团股份有限公司 面光源装置及液晶显示装置

Also Published As

Publication number Publication date
JP2002023145A (ja) 2002-01-23

Similar Documents

Publication Publication Date Title
JP3549176B2 (ja) 液晶表示装置、およびカラーフィルタ基板の製造方法
TWI323363B (fr)
KR101418728B1 (ko) 표시장치
JP4451485B2 (ja) バックライト及びフロントパネル上の反射型偏光子を有するｌｃｄ
JP4415334B2 (ja) 非吸収性偏光カラーフィルター及びそれを組み込んだ液晶表示装置
JP5106754B2 (ja) 半透過型表示装置及びその形成方法。
WO2004036287A1 (fr) Element barriere a parallaxe, procede permettant de produire cet element et dispositif d'affichage
TW574521B (en) Liquid crystal display and its producing method
JPH09166780A (ja) 反射型液晶表示装置
JPH10227998A (ja) 光学素子、偏光素子およびそれらの製造方法、並びに映像表示装置
WO2006058267A2 (fr) Dispositif et procede d'affichage couleur
JP3538149B2 (ja) 反射型液晶表示装置及びその製造方法
WO2009090778A1 (fr) Afficheur à cristaux liquides
JP3816467B2 (ja) 液晶表示装置
JP2007163722A (ja) 液晶装置とその製造方法、位相差板、及び電子機器
JP2010079024A (ja) 液晶表示装置
JP3310569B2 (ja) 反射型液晶表示装置
TW507094B (en) Liquid crystal display device
KR20130078727A (ko) 코팅형 위상차 필름 및 이를 구비한 유기전계발광 표시소자
WO2008041268A1 (fr) Élément d'affichage à cristaux liquides, son procédé de production et papier électronique comportant l'élément
JP2005141110A (ja) 液晶表示装置
WO2002005021A1 (fr) Affichage a cristaux liquide
JP4687870B2 (ja) 液晶表示装置およびその製造方法
WO2013010491A1 (fr) Afficheur à cristaux liquides semi-transmissif et semi-réfléchissant, et son procédé de fabrication
JP4494552B2 (ja) 透過型液晶表示装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase