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WO2017008433A1 - Dispositif lenticulaire à cristaux liquides à relief de surface, procédé de fabrication, et dispositif d'affichage - Google Patents

Dispositif lenticulaire à cristaux liquides à relief de surface, procédé de fabrication, et dispositif d'affichage Download PDF

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Publication number
WO2017008433A1
WO2017008433A1 PCT/CN2015/096890 CN2015096890W WO2017008433A1 WO 2017008433 A1 WO2017008433 A1 WO 2017008433A1 CN 2015096890 W CN2015096890 W CN 2015096890W WO 2017008433 A1 WO2017008433 A1 WO 2017008433A1
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WIPO (PCT)
Prior art keywords
liquid crystal
alignment
ito electrode
array device
convex lens
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Ceased
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PCT/CN2015/096890
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English (en)
Chinese (zh)
Inventor
林明彦
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/305—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using lenticular lenses, e.g. arrangements of cylindrical lenses

Definitions

  • the invention belongs to the field of naked-view 3D image display, and belongs to the technical field of liquid crystal lenticular lens arrays, and particularly relates to a technology for utilizing a Surface Relief Method to achieve 2D and 3D image switching.
  • FIG. 1 it is a schematic diagram of a known 2D and 3D image switching display device.
  • a liquid crystal view separation component 12 Liquide Crystal View Separator
  • the liquid crystal viewing and separating unit 12 is mounted on the front of the screen of the liquid crystal display 11, and is hereinafter referred to simply as the Front Installation Method.
  • the liquid crystal view separating component 12 can exhibit a transparent light penetration state to achieve the effect of 2D image display; or present a state of separation of the view to achieve the effect of 3D image display. .
  • the liquid crystal view separating component 12 can be composed of a liquid crystal lens array component or a liquid crystal parallax barrier module. Due to the related art of the present invention, it belongs to the field of liquid crystal lenticular lens array components, especially to the field of using the Surface Relief Method to achieve 2D and 3D image switching technology, and the following only refers to the known surface floating method.
  • the liquid crystal lenticular lens array assembly describes a well-known technique.
  • FIG. 2 it is a schematic diagram of a floating-type liquid crystal lenticular lens array device.
  • the structure shown in the figure is disclosed in U.S. Patent No. 6,069,650, the disclosure of which is incorporated herein by reference.
  • the surface-lifting liquid crystal lenticular lens array device 15 mainly comprises a conventional cylindrical array element assembly 30, two ITO electrode layers 34, 37, and a photoelectric material having an electronically variable optical refractive index (Elecro).
  • -Optic Material 38 is formed with a transparent planar substrate 36.
  • the conventional lenticular array assembly 30 is composed of a plurality of Parallel Lenticular Elements 16 arranged in parallel, and the lenticular lens assembly 16 is optically composed of a convex lens, and the material is composed of
  • the transparent polymer material is formed by a mold forming, or a mechanical processing, or a photolithographic process to produce the lenticular lens assembly.
  • the transparent planar substrate 36 is made of a flat transparent glass or plastic material.
  • the two ITO electrode layers 34, 37 are each over the surface 32 of the lenticular lens assembly 16 and above the surface 34 of the transparent planar substrate 36. Between the two surfaces, an electro-optic material (Elecro-Optic Material) 38 having an electrically changeable optical refractive index is filled, and the electro-optic material 38 which can be electronically controlled to change the optical refractive index is composed of a liquid crystal material. Generally, It can be composed of a Nematic Liquid Crystal material.
  • the technique of the surface floating liquid crystal lenticular lens array device 15 disclosed in the above-mentioned U.S. Patent No. 6,069,650 is only The structure of the theoretical structure does not meet the requirements of the existing liquid crystal process.
  • the ITO electrode layer 34 is disposed on the arcuate surface of the lenticular lens, and a parallel distributed electric field cannot be formed between the ITO electrode layer 37 and finally, the liquid crystal molecules cannot be aligned in a uniform direction.
  • FIG. 3 it is a schematic diagram of an improved surface floating liquid crystal lenticular lens array device.
  • the structure shown in the figure is disclosed in U.S. Patent No. 2,028,028, 923, the disclosure of which is incorporated herein by reference.
  • the improved Surface Relief Based Liquid Crystal Lenticular Device 50 is a modification of the above-mentioned patent US 6,069,650, which is an improvement of the ITO electrode, which is moved from the arc surface of the lens. Set it on a plane.
  • the improved surface-lifting liquid crystal lenticular lens array device 50 is mainly composed of upper and lower transparent substrates 39 and 41, upper and lower ITO electrode layers 43, 45, plano-concave lens assembly 47, and a plurality of liquid crystal molecules 49.
  • the plano-concave lens assembly 47 has an optical refractive index n p ; the plurality of liquid crystal molecules 49 are made of a Nematic Liquid Crystal material and have birefringent optics.
  • the refractive index (Ordinary Refractive Index) is n o
  • the extraordinary refractive index (Extraordinary Refractive Index) is n e
  • the upper and lower ITO electrode layers 39 and 41 are connected to the power source V.
  • liquid crystal lenticular lens array assembly 50 is mounted on the front of a liquid crystal screen (not shown) for displaying 2D or 3D images (not shown); the 2D or 3D image light source passes through After the action of the outermost polarizer (not shown) of the liquid crystal screen, the light source 53 is linearly polarized, so that the polarization direction is perpendicular to the paper surface.
  • the alignment of the nematic liquid crystal molecules 49 has a characteristic that the optical axis is perpendicular to the paper surface.
  • the incident light 53 has an abnormal light refractive index n e due to its light polarization direction being parallel to the optical axis of the liquid crystal molecules 49. Further, when the incident light 53 passes through the plano-concave lens array 47, since the incident light 53 senses the action of the convex lens because n e > n p , the above optical characteristics are suitable for presenting the display of the 3D image.
  • the arrangement of the nematic liquid crystal molecules 49 has an optical axis lying flat on the paper surface and perpendicular to the upper and lower ITO electrode layers 43, 45.
  • the characteristic is parallel to the direction of the electric field (not shown).
  • the incident light 53 the light polarization direction is perpendicular to the optical axis of the liquid crystal molecules 49, and the ordinary n o is felt.
  • the above optical characteristics are suitable for presenting a display of 2D images.
  • the technique of the surface floating liquid crystal lenticular lens array device 50 disclosed in the above-mentioned US20080259233 patent is still a constitution of a theoretical structure and does not meet the requirements of the existing liquid crystal cell (Liquid Crystal Cell) process.
  • the plano-concave lens array 47 and the lower ITO electrode layer 45 are not provided with a (1) alignment film layer, (2) spacer layer, (3) electrical connection, and (4) encapsulation.
  • the improved surface lift-off liquid crystal lenticular lens array device 50 does not constitute a truly manufacturable, usable component.
  • the three liquid crystal lenticular lens array assemblies described above all have liquid crystal molecules to achieve a variable optical refractive index. Therefore, the above three well-known techniques can be classified into the technical field of a liquid crystal dependent liquid crystal lenticular lens array assembly.
  • the invention discloses a surface floating liquid crystal lenticular lens array device, comprising: a lower substrate assembly, a lower transparent substrate, a lower ITO electrode layer, a secondary ITO electrode, an electrical blocking structure, a plurality of light shielding portions and a plurality of
  • the upper substrate assembly is composed of an upper transparent substrate, an upper ITO electrode layer, a plurality of upper alignment targets, and an upper alignment film
  • the plano-convex lens assembly is composed of a transparent material, which includes a plurality of convex lens surfaces, a sealing surface, a plurality of alignment liquid buffer surfaces, and a lower alignment film, wherein the plano-convex lens assembly is disposed on the lower ITO electrode layer of the lower substrate assembly; and a plurality of liquid crystal molecules are disposed on the convex lens surface
  • the sealing structure is disposed on the sealing surface for connecting and fixing the upper substrate assembly and the lower substrate
  • the lower transparent substrate and the upper transparent substrate are both made of transparent glass.
  • the lower ITO electrode layer, the secondary ITO electrode, the electrical blocking structure, and the plurality of light shielding portions are disposed on the same surface of the lower transparent substrate, and the electrical blocking structure is disposed on the lower ITO electrode layer and the Between the secondary ITO electrodes.
  • the lower ITO electrode layer and the secondary ITO electrode are each electrically connected to the external power source through a metal wire.
  • the plurality of light shielding portions are made of a black photoresist material.
  • the plurality of light shielding portions are disposed on the lower ITO electrode layer.
  • the plurality of lower alignment targets are disposed at four corners of the lower transparent substrate, wherein the plurality of lower alignment targets are composed of a metal material; or the plurality of upper alignment targets The target is disposed at four corners of the upper transparent substrate, and the plurality of upper alignment targets are composed of a metal material.
  • the plano-convex lens assembly having an optical refractive index transparent material n p is selected from glass or UV curable resin.
  • the plano-convex lens assembly can be directly formed on the lower substrate assembly by a planar ultraviolet curing process.
  • the convex lens surface is used to fill the plurality of liquid crystal molecules, and the convex lens surface is selected from an arcuate convex lens surface or a multi-faceted convex lens surface.
  • the convex lens surface when the convex lens surface is selected from an arcuate convex lens surface, the arcuate convex lens surface has a radius R, a periodic width P L , a lens height h, and a bottom layer thickness t.
  • the underlayer thickness t is less than 10 ⁇ m.
  • the encapsulation surface is disposed on both sides of the plano-convex lens assembly.
  • the plurality of alignment liquid buffer faces are disposed between the seal faces on the two sides to absorb excess alignment a liquid to maintain a uniform alignment film thickness, each of the alignment liquid buffer faces having a width S.
  • the width S of the alignment liquid buffer surface is less than 10 ⁇ m.
  • the lower alignment film is processed by rotating, or immersing, or letterpress printing, or printing to coat the surface of the plurality of convex lens surfaces and the plurality of alignment liquid buffer surfaces;
  • the alignment film liquid is further subjected to a process of thermal baking and alignment, so that the plurality of liquid crystal molecules can be arranged in the same direction;
  • the alignment direction of the lower alignment film is parallel to the direction of the long axis of the switchable liquid crystal lenticular lens.
  • the alignment buffer surface shields the crosstalk of the plurality of alignment liquid buffer faces.
  • the upper plate assembly is disposed on the upper transparent substrate by a photolithography process for the upper ITO electrode layer and the plurality of upper alignment targets.
  • the upper alignment film is processed by rotating, or immersing, or letterpress printing, or printing, to apply an alignment film liquid on the surface of the upper ITO electrode layer; the alignment film liquid is further baked by heat.
  • the alignment process allows the plurality of liquid crystal molecules to be aligned in the same direction.
  • the material of the sealant structure is composed of a UV curable resin, and the sealant structure can be disposed on the sealant surface by a precision alignment, precision dispensing and UV pre-curing process.
  • the material of the electrical conduction structure is composed of a conductive silver paste, and the electrical conduction structure can be disposed on the secondary ITO electrode by a process of precise alignment and precision dispensing.
  • the optical properties of the device are suitable for presenting a display of 3D images.
  • the geometry of the upper and lower alignment targets may each be selected to have a geometrically complementary square structure, a square ring structure, or may each be selected to have a circular structure with complementary geometric shapes,
  • the ring structures may each be selected to have a geometrically complementary cross structure and an anti-cross structure;
  • the upper and lower alignment targets may have a geometry ranging from ten micrometers to hundreds of micrometers.
  • the present invention discloses a display device comprising image incident light and the surface floating liquid crystal lenticular lens array device, wherein the image incident light has a linear polarization direction, an alignment direction of the upper alignment film and the image incident light.
  • the polarization directions are parallel.
  • the invention discloses a method for manufacturing the above surface floating liquid crystal lenticular lens array device, comprising: a first step of forming a lower ITO electrode layer, a sub-ITO electrode, an electrical blocking structure on a lower transparent substrate by a photolithography process; a plurality of lower alignment targets are formed into a lower substrate assembly; an upper ITO electrode layer, a plurality of light shielding portions and a plurality of upper alignment targets are formed on the upper transparent substrate by a photolithography process to form an upper substrate assembly; a second step, providing a planar mold having a mold structure opposite to the plano-convex lens assembly; passing the liquid UV curable resin through a precision jetting process to fill the planar mold; passing the lower substrate assembly in the vacuum chamber Precision optical alignment in the vacuum chamber, the lower ITO electrode layer of the lower substrate assembly can be precisely pressed against the planar mold and covered on the liquid UV curable resin; the liquid in the planar mold The UV curable resin illuminates the UV light to cure the liquid UV curable resin and is
  • the through structure is disposed on the secondary ITO electrode; in the eighth step, the upper substrate assembly and the lower substrate assembly are combined by a precision alignment and vacuum bonding process, and then the UV light is irradiated to cure the sealing structure. That is, the surface floating liquid crystal lenticular lens array device is formed.
  • the alignment process is selected from a rubbing process or a photo-alignment process.
  • the present invention improves the conventional surface floating liquid crystal lenticular lens array device, and provides a truly usable and usable 2D and 3D switchable device.
  • FIG. 1 is a schematic diagram of a 2D and 3D image switching display device
  • FIG. 2 is a schematic view showing the structure of a surface relief liquid crystal lenticular lens array assembly
  • FIG. 3 is a schematic view showing the structure of a surface relief liquid crystal lenticular lens array assembly
  • FIG. 4 is a schematic view showing a configuration of a surface relief liquid crystal lenticular lens array assembly
  • Figure 5 is a schematic view showing the structure of a surface floating type liquid crystal lenticular lens array device of the present invention.
  • FIG. 6 is a side view showing the structure of a lower substrate assembly of the present invention.
  • Figure 7 is a top plan view showing the structure of the lower substrate assembly of the present invention.
  • Figure 8 is a schematic view showing the constitution of the plano-convex lens assembly of the present invention.
  • Figure 9 is a schematic view showing a planar mold for forming a plano-convex lens assembly of the present invention.
  • FIG. 10 is a schematic view showing a process of filling a liquid mold with a liquid UV resin according to the present invention
  • Figure 11 is a schematic view showing the process of pressing and covering the liquid UV resin of the lower substrate assembly of the present invention.
  • FIG. 12 is a schematic view showing a curing process of a liquid UV resin according to the present invention.
  • Figure 13 is a schematic view showing the release of the convex lens assembly of the present invention.
  • Figure 14 is a schematic view showing the structure of a lens substrate assembly 3D of the present invention.
  • Figure 15 is a side elevational view showing the structure of the upper substrate assembly of the present invention.
  • Figure 16 is a top plan view showing the structure of the upper substrate assembly of the present invention.
  • 17 is a schematic view showing the assembly process of the sealing structure and the electrical conduction structure of the present invention.
  • FIG. 18 is a schematic view showing a process of assembling a liquid crystal drop according to the present invention.
  • 19 is a schematic view showing an assembly process of an upper substrate assembly and a lower lens liquid crystal cell assembly according to the present invention.
  • 20 is a schematic view showing the finished product of the surface floating type liquid crystal lenticular lens array device of the present invention.
  • 21 is a schematic view showing the geometry of a square alignment target of the present invention.
  • Figure 22 is a schematic view showing the geometry of the quadrilateral ring alignment target of the present invention.
  • Figure 23 is a schematic view showing the geometry of a circular alignment target of the present invention.
  • Figure 24 is a schematic view showing the geometry of the ring alignment target of the present invention.
  • Figure 25 is a schematic view showing the geometry of a cross-alignment target of the present invention.
  • Figure 26 is a schematic illustration of the geometry of the anti-cross alignment target of the present invention.
  • FIG. 5 is a schematic view showing the configuration of a surface floating type liquid crystal lenticular lens array device of the present invention.
  • the surface of the floating liquid crystal lenticular lens array device 60 mainly comprises upper and lower transparent substrates 71, 61; upper and lower ITO electrode layers 72, 62 and secondary ITO electrodes 62a; and a plurality of upper and lower alignment targets 73. 63; upper and lower alignment films 76, 66; a plurality of light shielding portions 65; a plano-convex lens assembly 64; a plurality of liquid crystal molecules 81, a sealing structure 82, an electrical conduction structure 83, and an external power source V.
  • the so-called upper and lower just for the convenience of explaining each structure, the relevance of the installation position is not limited. It has a top-bottom relationship as shown in FIG. That is to say, the above-mentioned so-called up and down can be reversed to the relationship between the bottom and the top.
  • the upper substrate assembly 171 and the lower substrate assembly 161 are additionally defined to more clearly explain the constitution and process of each of the above components.
  • the lower substrate assembly 161 is mainly composed of the lower transparent substrate 61, the lower ITO electrode layer 62, the secondary ITO electrode 62a, the electrical blocking structure 62b, the plurality of light shielding portions 65, and the plurality of The lower alignment target 63 is constructed;
  • the upper substrate assembly 171 is composed of an upper transparent substrate 71, an upper ITO electrode layer 72, an upper alignment film 76, and a plurality of upper alignment targets 73.
  • the lower transparent substrate 61 is made of a transparent glass, and the lower ITO electrode layer 62, the secondary ITO electrode 62a, and the electrical blocking structure 62b are provided by a photo-lithography process.
  • the photoetching process is also performed, and a black photoresist (Black Photo-Resistor) is used to form a plurality of light blocking portions 65 on the lower ITO electrode layer 62.
  • the plurality of light blocking portions 65 have a period width P. B , and line width B.
  • an electrical blocking structure 62b is provided to electrically isolate the lower ITO electrode layer 62 and the secondary ITO electrode 62a; the secondary ITO electrode 62a passes through the electrical conduction structure 83. Electrical connection is made to the upper ITO electrode layer 72. Further, the lower ITO electrode layer 62 and the sub-ITO electrode 62a are electrically connected to the external voltage V through a metal wire 62h.
  • the plurality of light shielding portions 65 are disposed on the lower ITO electrode layer 62, and have a period width P B and a line width B.
  • the plurality of light shielding portions 65 are disposed in one-to-one correspondence and aligned with the plurality of light shielding portions 65.
  • the alignment liquid buffer surface 64c shields the light of the crosstalk occurring at the plurality of alignment liquid buffer faces 64c.
  • the plurality of lower alignment targets 63 are disposed at the appropriate places, and the best ones are four corners, which are made of a metal material to improve the recognition and precision of the optical image alignment.
  • the plano-convex lens assembly 64 is made of a transparent material, and includes a plurality of arcuate convex lens faces 64a, a sealant face 64b, a plurality of alignment liquid buffer faces 64c, and a lower alignment film 66.
  • the lower ITO electrode layer 62 of the lower substrate assembly 161 is disposed.
  • the underlying thickness t is preferably as low as possible, t ⁇ 10 ⁇ m.
  • the convex surface may be selected from a multi-faceted convex lens surface (not shown).
  • the sealing surface 64b is disposed on both sides of the plano-convex lens assembly 64, and the plurality of alignment liquid buffering surfaces 64c are installed therebetween.
  • the encapsulation surface 64b has a height T and has a relationship of T ⁇ h+t.
  • the alignment liquid buffer surface 64c has a width S and has a relationship of S ⁇ B.
  • the plurality of alignment liquid buffering surfaces 64c are for absorbing excess alignment film liquid on the convex lens surface 64a to produce a uniform alignment film thickness, and in the process, the width S is minimized, preferably, S ⁇ 10 ⁇ m.
  • the arcuate convex lens surface 64a is used to fill the plurality of liquid crystal molecules 81 to form a switchable liquid crystal lenticular lens; the sealing surface 64b is used to set the sealing structure 82 to achieve Upper substrate assembly 171, lower substrate group The connection and fixing of the piece 161.
  • the lower alignment film 66 is coated by the spin, dipping, or letterpress printing, or inkjet printing, and the alignment liquid is applied to the plurality of arcuate lens faces 64a, and plural The surface of the alignment liquid buffer surface 64c is subjected to a thermal baking process to produce the lower alignment film 66.
  • the alignment liquid is composed of a polyimide material.
  • the lower alignment film 66 also needs to undergo an alignment process in order to allow the plurality of liquid crystal molecules 81 to be aligned in the same direction.
  • the alignment process of the lower alignment film is selected from a rubbing process (Rubbing Proess) or a photo-alignment process (Photo-Alignment Process).
  • the alignment direction of the lower alignment film is preferably a direction parallel to the long axis of the switchable liquid crystal lenticular lens.
  • plano-convex lens assembly 64 when the plano-convex lens assembly 64 is composed of a UV resin material, the plano-convex lens assembly 64 can be directly disposed on the lower substrate assembly through a Plate-to-Plate UV-Cured Manufacturing Process. 161.
  • FIGS. 9-13 it is a schematic diagram of a planar ultraviolet curing process.
  • the process is mainly to form a plano-convex lens assembly 64 composed of a UV resin on the lower substrate assembly 161 by a flat mold and a UV curing process.
  • FIG. 9 is a schematic view of a planar mold for forming a plano-convex lens assembly.
  • the Plane Mould 64d has a structure opposite to that of the plano-convex lens assembly 64.
  • FIG. 10 it is a schematic view of filling a planar mold with a liquid UV resin.
  • the planar mold 64d can be filled with a liquid UV resin 64e by means of Inkjet Printing.
  • FIG. 11 a schematic diagram of a process of pressing and covering a liquid UV resin for a lower substrate assembly.
  • the lower ITO electrode layer 62 of the lower substrate assembly 161 can be precisely pressed against the planar mold 64d and covered by the liquid UV resin by the optical alignment (High Alignment with High Accuracy) of the lower substrate assembly 161. 64e. Further, in order to avoid the incorporation of air bubbles, the above-described press-fitting and covering processes are generally carried out in a vacuum chamber.
  • FIG. 12 it is a schematic diagram of a process for curing a liquid UV resin.
  • the liquid UV resin 64e in the planar mold is irradiated for a suitable time by a parallel UV light source 64f of a suitable wavelength and light intensity, so that the liquid UV resin can be cured.
  • FIG. 13 a schematic view of the film removal of the convex lens assembly. After the curing of the liquid UV resin, the stripping lens assembly 64 is finally formed on the lower ITO electrode layer 62 of the lower substrate assembly 161.
  • FIG. 14 it is a schematic view of the structure of the lens substrate assembly 3D.
  • the lower lens substrate assembly 161' is constituted by the plano-convex lens assembly 64 and the lower substrate assembly 161.
  • the upper transparent substrate 71 is made of a transparent glass.
  • the upper ITO electrode layer 72 and the plurality of upper alignment targets 73 can be disposed by a photolithography process.
  • the upper alignment film 76 may be coated on the surface of the upper ITO electrode layer 72 by spin, dipping, or letterpress printing, or inkjet printing. And passing through a thermal baking process to produce the upper alignment film 76.
  • the alignment liquid is composed of a polyimide material.
  • the upper alignment film 76 also needs to undergo an alignment process in order to allow the plurality of liquid crystal molecules 81 to be aligned in the same direction.
  • the alignment process of the lower alignment film is selected from a rubbing process or a photo-alignment process.
  • the alignment direction of the upper alignment film as shown in FIG. 5, is a linear polarization direction parallel to the incident light of the image, the incident light includes a 2D/3D image, and the incident light is incident from the end of the upper substrate assembly 171. .
  • FIG. 17 to 20 are schematic views showing the assembly process of the upper substrate assembly and the lower lens substrate assembly.
  • the process is mainly after the plurality of liquid crystal molecules 81, the encapsulation structure 82, and the electrical conduction structure 83 are disposed on the lower lens substrate assembly 161', and then the upper substrate assembly 171 and the lower lens substrate assembly.
  • the 161' is linked and fixed, and finally, the surface floating liquid crystal lenticular lens array device 60 is produced.
  • FIG. 17 it is a schematic diagram of an assembly process of a sealant structure and an electrical conduction structure.
  • the material of the sealant structure 82 is composed of a UV resin.
  • the sealant structure 82 can be disposed on the sealant surface 64b by a precision alignment and precision dispensing process and UV pre-curing.
  • the above process is generally referred to as a sealing process to achieve connection and fixation of the upper substrate assembly 171 and the lower substrate assembly 161, and to achieve the purpose of sealing the plurality of liquid crystal molecules 81.
  • the material of the electrical conduction structure 83 is composed of a conductive silver paste, and the electrical conduction structure 83 can be disposed on the secondary ITO electrode 62a by a process of precise alignment and precision dispensing.
  • the above process generally referred to as a spot silver paste process, is used to electrically connect the upper ITO electrode layer 72 to the external voltage V.
  • Figure 18 is a schematic view showing the assembly process of the liquid crystal dropping.
  • the plurality of liquid crystal molecules 81 can be filled on the arcuate convex lens surface 64a by a precision alignment and an on-line drop-off (ODF) process to form a switchable liquid crystal lenticular lens.
  • ODF on-line drop-off
  • the above process is generally referred to as liquid crystal. Drop the process.
  • the lower lens substrate assembly 161' for completing the above-mentioned sealing, spot silver paste and liquid crystal dropping process is hereinafter referred to as the lower lens liquid crystal cell assembly 161".
  • the above sealing material Or the silver paste process the object to be implemented is not limited to the lower lens substrate assembly 161', and may be the upper substrate assembly 171.
  • FIG. 19 it is a schematic diagram of an assembly process of the upper substrate assembly and the lower lens liquid crystal cell assembly.
  • the upper substrate assembly 171 can be combined with the lower lens liquid crystal cell assembly 161 by a precision alignment and vacuum bonding process.
  • the sealing structure 82 is cured by the UV light source 84, as shown in FIG. That is, the surface-lifting liquid crystal lenticular lens array device 60 of the present patent is produced.
  • the optical characteristics and optical characteristics of the device 60 are suitable for displaying a 3D image and achieving the purpose of switchable display of 2D and 3D images.
  • the above-described geometric configurations of the upper and lower alignment targets 73 and 63 can be selected as shown in FIGS. 21 to 26, respectively.
  • the above-mentioned upper and lower alignment targets 73a, 63a, 73b, 63b, 73c, and 63c may have a geometric size ranging from ten micrometers ( ⁇ m) to several hundreds of micrometers.
  • the above surface floating liquid crystal lenticular lens array device provided by the present invention is a truly usable and usable 2D and 3D switchable device.
  • a surface floating liquid crystal lenticular lens array device comprising:
  • a lower substrate assembly comprising a lower transparent substrate, a lower ITO electrode layer, a secondary ITO electrode, an electrical blocking structure, and a plurality of light shielding portions; the lower ITO electrode layer and the secondary ITO electrode are respectively located on the same side surface of the lower transparent substrate, electrically
  • the blocking structure is located between the lower ITO electrode layer and the secondary ITO electrode, and the light shielding portions are spaced apart on the surface of the lower ITO electrode layer away from the side of the lower transparent substrate;
  • the upper substrate assembly is located above the lower substrate assembly and includes an upper transparent substrate, an upper ITO electrode layer and an upper alignment film; the upper ITO electrode layer is located on a surface of the upper transparent substrate adjacent to the lower substrate assembly, and the upper alignment film is located on the upper substrate The ITO electrode layer is away from the surface on the side of the upper transparent substrate;
  • the plano-convex lens assembly includes an upper surface facing the upper substrate assembly and a lower alignment film, the upper surface includes a plurality of convex lens surfaces, an alignment liquid buffer surface, and a sealing surface, and the alignment liquid buffer surface is disposed between the adjacent convex lens surfaces and the convex lens
  • the surface of the lower alignment film is located on the surface of the convex lens surface and the buffer surface of the alignment liquid.
  • the convex lens surface and the buffer surface of the alignment liquid are located in a region surrounded by the sealing surface, and the plano-lens lens assembly is disposed between the lower substrate assembly and the upper substrate assembly. ;
  • a sealing structure disposed on the sealing surface for connecting and fixing the upper substrate assembly and the flat lens assembly, and sealing the plurality of liquid crystal molecules;
  • An electrical conduction structure is connected to the ITO electrode layer and the secondary ITO electrode;
  • the external power source is electrically connected to the lower ITO electrode layer and the secondary ITO electrode, and the plurality of liquid crystal lenticular lenses are driven by the voltage V to achieve the purpose of switching between 2D and 3D display.
  • ITO is disposed in two planes, and a uniform electric field can be formed, which can well control the alignment of liquid crystal molecules.
  • the lower ITO electrode layer is disposed on a surface away from the side of the lower transparent substrate, and/or the surface of the secondary ITO electrode away from the side of the lower transparent substrate is further provided with a plurality of lower alignment targets.
  • a plurality of upper alignment targets are further disposed on the surface of the upper ITO electrode layer away from the upper transparent substrate. Setting the upper alignment target and the lower alignment target can improve the recognition and accuracy of the optical image alignment.
  • the transparent material of the plano-convex lens assembly has an optical refractive index n p selected from glass or UV curable resin;
  • the liquid crystal molecules are composed of a nematic liquid crystal material, characterized by birefringence optics, liquid crystal molecules
  • n o the ordinary refractive index
  • n e the extraordinary refractive index
  • n o n p and n e >n p .
  • the alignment direction of the lower alignment film is parallel to the direction of the long axis of the liquid crystal lenticular lens, and when the driving voltage is turned off, the liquid crystal molecules exhibit an ordinary refractive index n o to realize 3D display; when the driving voltage is When turned on, the liquid crystal molecules exhibit an extraordinary refractive index n e for 2D display.
  • the convex lens surface is an arcuate convex lens surface or a multi-faceted convex lens surface.
  • the thickness t of the bottom layer of the arcuate convex lens surface is less than 10 ⁇ m.
  • the arcuate convex lens surface has a period unit width P L
  • the alignment liquid buffer surface has a width S
  • the width S of the alignment liquid buffer surface is less than 10 ⁇ m.
  • the material of the sealing structure is a UV curable resin
  • the material of the electrical conduction structure is a conductive silver paste
  • the light shielding portion is composed of a black photoresist material.
  • a display device comprising image incident light and a surface floating liquid crystal lenticular lens array device, wherein the surface floating liquid crystal lenticular lens array device is a surface floating type described above
  • the incident light of the image has a linear polarization direction
  • the alignment direction of the upper alignment film in the floating liquid crystal lenticular lens array device is parallel to the polarization direction of the incident light of the image.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

La présente invention concerne un dispositif lenticulaire à cristaux liquides à relief de surface (60), un procédé de fabrication pour ce dispositif lenticulaire, et un dispositif d'affichage utilisant ce dispositif lenticulaire. Le dispositif lenticulaire à cristaux liquides à relief de surface (60) est constitué essentiellement d'un élément substrat supérieur (171), d'un élément substrat inférieur (161), d'un élément lentille plan-convexe (64), d'une pluralité de molécules de cristaux liquides (81), d'une structure d'étanchéité en plastique (82), d'une structure électroconductrice (83), et d'une source d'alimentation externe (V). L'élément substrat inférieur (161) comprend une couche d'électrode ITO inférieure (62), une électrode ITO secondaire (62a), une pluralité de parties d'ombrage (65), et plusieurs cibles d'alignement inférieures (63). L'élément substrat supérieur comporte une couche d'électrode ITO supérieure (72) et plusieurs cibles d'alignement supérieures (73). L'élément lentille plan-convexe (64) est disposé sur la couche d'électrode ITO inférieure (62) de l'élément substrat inférieur (161). La pluralité de molécules de liquide (81) sont placées sur la surface de lentille convexe (64a). La source d'alimentation externe (V) est connectée électriquement à la couche d'électrode ITO inférieure (62) et à l'électrode ITO secondaire (62a). La pluralité de lentilles lenticulaires à cristaux liquides sont pilotées par une tension appropriée afin d'atteindre l'objectif d'un afficheur commutable 2D/3D.
PCT/CN2015/096890 2015-07-13 2015-12-10 Dispositif lenticulaire à cristaux liquides à relief de surface, procédé de fabrication, et dispositif d'affichage Ceased WO2017008433A1 (fr)

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CN105898286A (zh) * 2016-04-11 2016-08-24 北京邮电大学 一种三维图像显示装置
CN106094068B (zh) * 2016-08-23 2018-01-09 张家港康得新光电材料有限公司 电光材料柱状透镜阵列结构与包括其的显示装置
CN106094067B (zh) * 2016-08-23 2018-01-09 张家港康得新光电材料有限公司 电光材料柱状透镜阵列结构与包括其的显示装置
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WO2018041273A1 (fr) * 2016-08-31 2018-03-08 张家港康得新光电材料有限公司 Composant optique, appareil optique, et procédé de fabrication de composant optique
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CN109669272A (zh) * 2018-12-03 2019-04-23 张家港康得新光电材料有限公司 视景分离元件的制作方法、视景分离元件和立体显示装置
CN110208886A (zh) * 2019-05-23 2019-09-06 广东聚华印刷显示技术有限公司 光提取结构制造方法、像素结构和显示面板
CN113703180B (zh) * 2020-05-22 2023-06-20 北京芯海视界三维科技有限公司 透镜光栅的制作方法
CN112462970B (zh) * 2020-11-19 2023-02-17 深圳英伦科技股份有限公司 显示屏和显示设备
CN114442358A (zh) * 2022-01-14 2022-05-06 深圳英伦科技股份有限公司 液晶透镜及其制备方法

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