(19)
(11)EP 3 136 135 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
13.05.2020 Bulletin 2020/20

(21)Application number: 14890293.5

(22)Date of filing:  22.04.2014
(51)Int. Cl.: 
G02B 1/04  (2006.01)
G02B 26/00  (2006.01)
G02B 5/02  (2006.01)
(86)International application number:
PCT/CN2014/075899
(87)International publication number:
WO 2015/161432 (29.10.2015 Gazette  2015/43)

(54)

DISPLAY STRUCTURE HAVING HIGH-BRIGHTNESS DIFFUSE REFLECTOR AND MANUFACTURING METHOD THEREFOR

ANZEIGESTRUKTUR MIT DIFFUSEM REFLEKTOR MIT HOHER HELLIGKEIT UND HERSTELLUNGSVERFAHREN DAFÜR

STRUCTURE D'AFFICHAGE COMPORTANT UN RÉFLECTEUR DIFFUS HAUTE LUMINOSITÉ ET SON PROCÉDÉ DE FABRICATION


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(43)Date of publication of application:
01.03.2017 Bulletin 2017/09

(73)Proprietors:
  • Shenzhen Guohua Optoelectronics Co. Ltd.
    Shenzhen, Guangdong 518110 (CN)
  • South China Normal University
    Guangzhou, Guangdong 510006 (CN)
  • Shenzhen Guohua Optoelectronics Institute
    Shenzhen, Guangdong 518110 (CN)

(72)Inventors:
  • ZHOU, Guofu
    Guangzhou Guangdong 510006 (CN)
  • HAYES, Robert Andrew
    Guangzhou Guangdong 510006 (CN)
  • GROENEWOLD, Jan
    Guangzhou Guangdong 510006 (CN)

(74)Representative: Stöckeler, Ferdinand et al
Schoppe, Zimmermann, Stöckeler Zinkler, Schenk & Partner mbB Patentanwälte Radlkoferstrasse 2
81373 München
81373 München (DE)


(56)References cited: : 
CN-A- 1 367 804
CN-A- 101 198 897
CN-A- 101 355 836
CN-A- 101 916 009
CN-U- 203 365 852
JP-A- 2004 177 844
US-A1- 2005 266 215
US-A1- 2013 335 805
CN-A- 1 791 829
CN-A- 101 203 799
CN-A- 101 916 009
CN-A- 103 955 011
CN-U- 203 909 327
KR-A- 20130 142 747
US-A1- 2006 215 252
US-A1- 2014 071 653
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description

    TECHNICAL FIELD



    [0001] The present invention relates to a display structure, in particular to a reflection-type display structure with a high-brightness diffuse reflector.

    BACKGROUND



    [0002] At present, a panel display structure is generally adopted in a display unit used for characters, images, videos and interaction interface. The panel display structures, such as electro fluidic display system (EFD), electrophoretic display system, in-plane switching (IPS), electro-osmosis display system and liquid crystal display (LCD), are widely used in the field. A part of the display structures adopts reflection display, for example, EFD applied to E ink or electronic paper. The EFD is also called as electrowetting display, where the electrowetting refers to a phenomenon that the wettability of droplets on the substrate is changed, i.e., a contact angle is changed to deform and shift the droplets, by varying a voltage between the droplets and the insulating substrate. By wetting it refers to a process that one fluid on a solid surface is replaced by another fluid. Liquid can spread on the solid surface, and the solid-liquid contact surface has a tendency of expanding, i.e., the adhesive force of the liquid to the solid surface is larger than its cohesive force, which is wetting. Non-wetting refers to the liquid cannot spread on the solid surface and the contact surface has a tendency of shrinking into a sphere, i.e., non-wetting is the result of the adhesive force of the liquid to the solid surface is smaller than its cohesive force. The wetting effect of a water-resistant surface can be changed by voltage (so it can be called electrowetting) to make the surface more hydrophilic (wetter). Since the originally hydrophobic surface becomes more hydrophilic now, the form of the inert liquid, for example an oil layer, which well contact with the hydrophobic surface has to be changed. Such interaction attribute control is the basis for the application of electrowetting. The application of electrowetting principle is described in detailed in publication document WO03071347 and the content issued in paper 425383385 of the publication ⟨⟨Nature⟩⟩. Referring to the principle structure diagram of wetting as shown in Fig. 1, when the electrode is applied with voltage V, charges are accumulated at the lower surface of the water layer, then its electrostatic force Fel overcomes the capacitance force Fcap and breaks through the oil layer, and the hydrophobic coating on the substrate is covered, such that the water layer contacts with the original hydrophobic coating under the action of voltage. By further increasing the voltage, the oil layer broken through can be pushed to one corner of the pixel region. If the voltage is removed, the compressed oil will return to the state before the voltage is applied.

    [0003] Compared with other display technologies, the EFD and its structure have many advantages, since it has both high photoelectric efficiency and switching speed. The EFD unit is a variable aperture filter in nature. In on-state driven by voltage, its visual appearance depends on the reflection material displayed when the color oil layer is faded. A good reflection material can provide a better diffuse reflection effect for a display unit to restore a simulation effect that a user reads on a paper, meanwhile a better contrast ratio can also be provided.

    [0004] US 2013/335805 A1 discloses a display device comprising: (a) a polar fluid that is at least one of colored and black, (b) a non-polar fluid that is at least one of transparent and translucent, (c) a first substrate, (d) a second substrate arranged relative to the first substrate to define a channel occupied by the polar fluid and the non-polar fluid, wherein at least one of the polar fluid and the non-polar fluid is visible through at least one of the first substrate and the second substrate, (e) a reflector having a plurality of features, comprising at least one of concavities and projections, that alter an angle of reflected light from a specular reflection to provide the appearance of at least one of a diffuse reflection and a non-metallic reflection.

    [0005] US 2014/071653 A1 describes a back-lit transmissive display including a transmissive display (620) and a variable index light extraction layer (640) optically coupled to a lightguide (630). The variable index light extraction layer has first regions (140) of nanovoided polymeric material and second regions (130) of the nanovoided polymeric material and an additional material. The first and second regions are disposed such that for light being transported at a supercritical angle in the lightguide, the variable index light extraction layer selectively extracts the light in a predetermined way based on the geometric arrangement of the first and second regions.

    [0006] US 2005/266215A1 discloses a display apparatus including a reflective layer that significantly enhances light delivered to a display surface, especially in displays requiring small dimension components. The reflective layers are substantially immune to shrinkage and curl that may result from duration heat testing. The reflective layer includes at least two layers, where one of the layers includes a crystalline polyester material.

    [0007] US 2006/215252A1 provides a display medium including a light-modulating layer that contains mobile fine particles showing coloration in a dispersion state; a display device including a light-modulating layer that contains mobile fine particles showing coloration in a dispersion state, and a fine particle mobile part that is provided close to the light-modulating layer; and a display method using a display medium including a light-modulating layer.

    [0008] In the existing electronic paper, as a transverse drive principle is required for implementing the transparent EPD, Al and Ag coatings are usually applied to bottom glass layer in a transparent display to form a mirror surface or a reflection surface, which greatly differs from a real paper.

    [0009] The display screens realizing the paper simulation effects in market at present involve E ink or electronic paper display screens from Sony, Amazon kindle, which are based on the EPD principle, and generally on the vertical or longitudinal drive principle based on the EPD, i.e., they are implemented as a reflection (non transparent) display system. The paper effect is realized by forming a coating on the substrate using a vacuum coating process, for example spraying Ti02 particles. The TiO2 coating process is to approximate to paper effect as much as possible, but it leads to low reflection ratio, unsatisfactory contrast ratio and high cost.

    SUMMARY OF THE INVENTION



    [0010] The invention provide a reflection-type display structure with a high-brightness diffuse reflector and a manufacturing method thereof, to overcome the defects due to the technical problems in prior art.

    [0011] In order to achieve the objective, the following technical solutions are used in the invention.

    [0012] According to one aspect of the invention, a reflection-type display structure with a high-brightness diffuse reflector is provided, wherein the display structure comprises panel glass, a display layer and substrate glass, and the reflector is arranged under the substrate glass, the panel glass, and wherein the display layer, the substrate glass and a diffuse reflection polymer thin film material are stacked in sequence, and the reflector is the diffuse reflection polymer thin film material, wherein the substrate glass is configured to be thin enough to reduce light path between the display layer and the reflector; an adhesive layer is arranged between the substrate glass and the diffuse reflection polymer thin film material and is used for adhering the diffuse reflection polymer thin film material to the substrate side of the display structure, the optical property of the adhesive layer is adapted to transmit the incident light and emergent light to penetrate through the adhesive layer, the diffuse reflection polymer thin film material is a PET-based material, and the thickness of which is 175-350 µm.

    [0013] Preferably, the diffuse reflection polymer thin film material is filled with diffuse reflection particles which allows a diffuse reflection to incident light.

    [0014] According another aspect of the invention, an electrowetting reflection-type display structure is provided, the electrowetting display structure is similar to the reflection-type display structure with a high-brightness diffuse reflector described above, wherein the display layer is an EFD switching layer.

    [0015] According to a further aspect of the invention, an electrowetting reflection-type display structure is provided, comprising a front panel, an EFD switching layer and a reflector, wherein the front panel, the EFD switching layer and the reflector are stacked in sequence, wherein the front panel comprises panel glass or a thin film, and the reflector is a PET-based diffuse reflection polymer thin film material, the diffuse reflection polymer thin film material is a PET-based material, the thickness of which is set to be 175-350 µm, and the diffuse reflection polymer thin film material is filled with diffuse reflection particles which allow a diffuse reflection to incident light.

    [0016] According to yet another aspect of the invention, a method for manufacturing a reflection-type display structure with a high-brightness diffuse reflector is provided, comprising the following steps: arranging a display layer on substrate glass; arranging panel glass on the display layer; arranging an adhesive layer at one side of the substrate glass away from the display layer; and arranging a reflector at one side of the adhesive layer away from the substrate glass, wherein the reflector is a diffuse reflection polymer thin film material, wherein the diffuse reflection polymer thin film material is a PET-based material and the thickness of which is set to be 175-350 µm, the diffuse reflection polymer thin film material is filled with diffuse reflection particles allowing a diffuse reflection to incident light, and the optical property of the adhesive layer is adapted to transmit the incident light and emergent light through the adhesive layer.

    [0017] According to another aspect of the invention, a method for manufacturing an electrowetting reflection-type display structure is provided, comprising the following steps: arranging an EFD switching layer on a diffuse reflection polymer thin film material as a reflector; arranging panel glass on the EFD switching layer directly, or processing the front panel thin film directly on the EFD switching layer directly by a solution process, wherein the diffuse reflection polymer thin film material is a PET-based material and is filled with diffuse reflection particles which allow a diffuse reflection to incident light.

    [0018] The display structure and manufacturing method thereof of the invention can be used for any non-transparent display technology, including electrowetting display system, electro fluidic display system, electrophoretic display system, in-plane switching display, electro-osmotic display system and liquid crystal display.

    [0019] The invention has the following obvious advantages and beneficial effects compared with the prior art:
    According to the display structure and manufacturing method thereof of the invention, a diffuse reflection polymer thin film is placed under the substrate of the existing display structure as a reflector to provide required diffuse reflection and contrast ratio approximate to paper. An electronic display screen fully inherited traditional paper can be realized by integrating a polymer thin film containing diffuse reflection particles behind the transparent display panel or the back of the substrate, and this thin film material can reflect as high as 93% of the ambient light, which is much higher than paper (about 80%) by being configured appropriately. The manufacturing process adopted by the invention is much simpler as compared with the existing vacuum coating process, for example, the TiO2 coating process, which avoids the pricy vacuum coating process and greatly, reduces the manufacturing cost.

    BRIEF DESCRIPTIONS OF THE DRAWINGS



    [0020] Embodiments of the invention will be described in detail in combination with the accompanying drawings, wherein:

    Fig. 1 is a principle schematic diagram of an EFD display structure;

    Fig. 2 is a schematic diagram of a display structure according to an embodiment of the invention;

    Fig. 3 is a schematic diagram of a display structure according to another embodiment of the invention; and

    Fig. 4 is a schematic diagram of a display structure according to a further embodiment of the invention.


    DETAILED DESCRIPTION OF THE EMBODIMENTS



    [0021] As shown in Fig. 2, it shows an embodiment of a reflection-type display structure with a high-brightness diffuse reflector according to the invention, the display structure comprises panel glass 1, a display layer 2 and substrate glass 3. In the existing reflection display technology, in order to obtain a diffuse reflection effect, a diffuse reflection layer or Lambert reflector material is required to be arranged under the substrate glass 3; while in the embodiment, a diffuse reflection polymer thin film material 4 is arranged under the substrate glass 3, and the panel glass 1, the display layer 2, the substrate glass 3 and the diffuse reflection polymer thin film material 4 are stacked in sequence. The reflector is made by a diffuse reflection polymer thin film material that allowing the diffuse reflection to the incident light 5. In order to improve durability and reliability, preferably, the diffuse reflection polymer thin film material is required to have small light transmittance, i.e., have sufficient thickness, in addition, have certain physical strength, for example, have sufficient wear resistance and tear resistance to meet the demands of a preparing process, and the demands of reflection display, for example, the contrast ratio and diffuse reflection required by electronic paper.

    [0022] In order to obtain a good diffuse reflection effect and enough contrast ratio to realize a viewing effect approximate to paper, as an instance, the diffuse reflection polymer thin film material 4 makes use of Melinex 329 and Melinex 339 materials, or thin film material with extremely high diffuse reflection, the Melinex materials are based on PET and filled with diffuse reflection particles such as BaTiO3. They can reflect as high as 93% of ambient light, which is much higher than paper (about 80%), thereby realizing high-brightness diffuse reflection. As for a reflector, the thickness of thin film can be 175-350 µm, preferably 175 or 350 µm, such that it is thicker than common paper, which is one of the reasons that the optical properties are improved.

    [0023] As shown in Fig. 3, it shows another embodiment of a reflection-type display structure with a high-brightness diffuse reflector according to the invention, when the display layer 2 is in "on" state of the light transmittance, the incident light 5 transmits through the panel glass 1, display layer 2 and substrate glass 3, then generates reflection at the surface of reflector, i.e., the diffuse reflection polymer thin film material 4, and emergent light 6 of which exit along the original light path to the outside of the panel glass 1. In the display structure, the key problem to be solved is to reduce the interval between the display layer 2 and the reflector to improve the optical efficiency of the panel display structure with the external thin film material reflector. If the interval is too large, the refraction effects among different mediums will become obvious, thus the effective display resolution and display fineness will be limited due to the optical distortion generated by refraction. Therefore, the substrate glass 3 is processed to be thinner in the embodiment according to the required display resolution or fineness, on basis of the previous embodiment, so that the light path between the display layer 2 and the reflector can be reduced. For example, the thickness of the substrate glass 3 of the display structure is preferably set to be less than 0.5 mm, more preferably less than 0.2 mm.

    [0024] In order to further improve the optical performance, an adhesive layer 7 with proper optical properties can be used, and the paper reflector is adhered to the substrate side of the display structure. Based on the above embodiments, the adhesive layer 7 can be arranged between the substrate glass 3 and the diffuse reflection polymer thin film material 4, which is used for adhering the diffuse reflection polymer thin film material 4 to the substrate side of the display structure. The optical property of the adhesive layer 7 is adapted to transmit the incident light 5 and emergent light 6 through the adhesive layer 7.

    [0025] According to another aspect of the invention, a method for manufacturing a reflection-type display structure with a high-brightness diffuse reflector is provided, which comprises the following steps: arranging a display layer 2 on substrate glass 3; arranging panel glass 1 on the display layer 2; arranging an adhesive layer 7 at one side of the substrate glass 3 away from the display layer 2; arranging a diffuse reflection polymer thin film material 4 at one side of the adhesive layer 7 away from the substrate glass 3, wherein the optical property of the adhesive layer 7 is adapted to transmit the incident light 5 and emergent light 6 through the adhesive layer 7. For example, the thickness of the substrate glass 3 of the display structure can be configured to be preferably less than 0.5 mm, more preferably less than 0.2 mm. Preferably, the reflector is made by the diffuse reflection polymer thin film material 4 that allowing diffuse reflection to the incident light 5.

    [0026] The reflection-type display structure with a high-brightness diffuse reflector according to the embodiments described above can be applied to various panel display structures, in particular to a reflection type and/or flexible display structure. Based on the display principle, mechanical properties and machining processing of an electrowetting display unit, the reflection-type display structure with a high-brightness diffuse reflector according to the embodiments is particularly suitable for the electrowetting display unit.

    [0027] Fig. 4 shows an electrowetting reflection-type display structure with a high-brightness diffuse reflector according to the invention, of which the specific stacking structure is similar to the above reflection-type display structure with a high-brightness diffuse reflector. In the electrowetting display structure, the display layer 2 is an EFD switching layer 9. An instance of the specific structure of the EFD switching layer 9 can be seen in Fig. 1. In fact, the display structure of the invention can be well matched with the electrowetting display technology to provide an excellent display effect like paper.

    [0028] According to the embodiment, a further advantage of application of the polymer thin film reflector to the electrowetting display structure lies in that: the front panel of which can be directly processed on the polymer thin film as the reflector, such polymer thin film structure can be called as an in-cell diffuser, and the total structure can be called as an in-cell electrowetting reflection-type display structure. The front panel portion can comprise panel glass 1 or front panel thin film 8 and the EFD switching layer 9. Such front panel thin film 8 of the front panel portion can be manufactured based on a solution process, and thin film material which is inert with respect to the liquid used in the process and is stable in property at the process temperature can be used, for example, Melinex 329 or Melinex 339. The simplified optical stacking structure is shown in Fig. 4.

    [0029] Such structure is very efficient, because the reflector is directly adjacent to the optical switching layer at the moment. Standard PET still has good size stability at a temperature as high as about 120°C. Dupont Teijin Company has released a PET with new heat stability level, which can resist the process temperature as high as 180°C. In the case where higher process temperature is required, a PEN substrate can be used, although its cost is high, it can be put into commercial use.

    [0030] The display structure and manufacturing method thereof according to the invention can be used for any non-transparent display technology, including electrowetting display system, electro fluidic display system, electrophoretic display system, in-plane switching display, electro-osmotic display system and liquid crystal display.


    Claims

    1. A reflection-type display structure with a high-brightness diffuse reflector, comprising panel glass, a display layer and substrate glass, wherein
    the reflector is made by a diffuse reflection polymer film material, wherein the diffuse reflection polymer film material is a PET-based material, and the thickness of which is 175-350 µm,
    the panel glass, the display layer, the substrate glass and the reflector are stacked in sequence, and
    the reflector is arranged under the substrate glass,
    wherein,
    an adhesive layer is arranged between the substrate glass and the diffuse reflection polymer film material, which is used for adhering the diffuse reflection polymer film material to the substrate side of the display structure; and
    the optical property of the adhesive layer is adapted to transmit the incident light and emergent light to penetrate through the adhesive layer.
     
    2. The reflection-type display structure with a high-brightness diffuse reflector according to claim 1, wherein the diffuse reflection polymer film material is filled with diffuse reflection particles allowing a diffuse reflection to incident light of the display structure.
     
    3. An electrowetting reflection-type display structure, using the display structure with a high-brightness diffuse reflector according to any one of claims 1 or 2, wherein the display layer is an EFD switching layer.
     
    4. An electrowetting reflection-type display structure, comprising a front panel, an EFD switching layer and a reflector, wherein
    the front panel, the EFD switching layer and the reflector are stacked in sequence,
    the front panel comprises panel glass or a film, and
    the reflector is a PET-based diffuse reflection polymer film material, and the thickness of which is 175-350 µm,
    wherein,
    the diffuse reflection polymer film material is a PET-based material, and the diffuse reflection polymer film material is filled with diffuse reflection particles allowing a diffuse reflection to incident light of the electrowetting display structure.
     
    5. A method for manufacturing a reflection-type display structure with a high-brightness diffuse reflector, comprising the following steps:

    arranging a display layer on the substrate glass;

    arranging panel glass on the display layer;

    arranging an adhesive layer at one side of the substrate glass away from the display layer; and

    arranging a reflector at one side of the adhesive layer away from the substrate glass, wherein

    the reflector is a diffuse reflection polymer film material,

    the diffuse reflection polymer film material is a PET-based material,

    the thickness of which is 170-350 µm,

    the diffuse reflection polymer film material is filled with diffuse reflection particles allowing a diffuse reflection to incident light of the display structure, and

    the optical property of the adhesive layer is adapted to transmit the incident light and emergent light to penetrate through the adhesive layer.


     
    6. A method for manufacturing an electrowetting reflection-type display structure, comprising the following steps:

    arranging an EFD switching layer on a diffuse reflection polymer film material as a reflector;

    arranging panel glass on the EFD switching layer directly, or processing a front panel film directly on the EFD switching layer by a solution process, wherein

    the diffuse reflection polymer film material is a PET-based material, and is filled with diffuse reflection particles allowing a diffuse reflection to incident light of the display structure.


     


    Ansprüche

    1. Eine Anzeigestruktur vom Reflektionstyp mit einem diffusen Reflektor mit starker Helligkeit, die ein Scheibenglas, eine Anzeigeschicht und ein Substratglas aufweist, wobei
    der Reflektor aus einem diffus reflektierenden Polymerfilmmaterial hergestellt ist, wobei das diffus reflektierende Polymerfilmmaterial ein PET-basiertes Material ist und die Dicke desselben 175-350 µm beträgt,
    das Scheibenglas, die Anzeigeschicht, das Substratglas und der Reflektor der Reihe nach gestapelt sind und
    der Reflektor unter dem Substratglas angeordnet ist,
    wobei
    zwischen dem Substratglas und dem diffus reflektierenden Polymerfilmmaterial eine Haftschicht angeordnet ist, die zum Kleben des diffus reflektierenden Polymerfilmmaterials an die Substratseite der Anzeigestruktur verwendet wird; und
    die optische Eigenschaft der Haftschicht angepasst ist, um das einfallende Licht und das austretende Licht zu übertragen, so dass dasselbe durch die Haftschicht dringt.
     
    2. Die Anzeigestruktur vom Reflektionstyp mit einem diffusen Reflektor mit starker Helligkeit gemäß Anspruch 1, bei dem das diffus reflektierende Polymerfilmmaterial mit diffus reflektierenden Partikeln gefüllt ist, die eine diffuse Reflektion auf einfallendes Licht der Anzeigestruktur ermöglichen.
     
    3. Eine Elektrobenetzungsanzeigestruktur vom Reflektionstyp, die die Anzeigestruktur mit einem diffusen Reflektor mit starker Helligkeit gemäß einem der Ansprüche 1 oder 2 verwendet, wobei die Anzeigeschicht eine EFD-Schaltschicht ist.
     
    4. Eine Elektrobenetzungsanzeigestruktur vom Reflektionstyp, die eine Vorderscheibe, eine EFD-Schaltschicht und einen Reflektor aufweist, wobei
    die Vorderscheibe, die EFD-Schaltschicht und der Reflektor der Reihe nach gestapelt sind,
    die Vorderscheibe ein Scheibenglas oder einen Film aufweist und
    der Reflektor ein diffus reflektierendes Polymerfilmmaterial auf PET-Basis ist und die Dicke desselben 175 bis 350 µm beträgt,
    wobei
    das diffus reflektierende Polymerfilmmaterial ein Material auf PET-Basis ist und das diffus reflektierende Polymerfilmmaterial mit diffus reflektierenden Partikeln gefüllt ist, die eine diffuse Reflektion auf einfallendes Licht der Elektrobenetzungsanzeigestruktur ermöglichen.
     
    5. Ein Verfahren zum Herstellen einer Anzeigestruktur vom Reflektionstyp mit einem diffusen Reflektor mit starker Helligkeit, das folgende Schritte aufweist:

    Anordnen einer Anzeigeschicht auf dem Substratglas;

    Anordnen von Scheibenglas auf der Anzeigeschicht;

    Anordnen einer Haftschicht an einer Seite des Substratglases entfernt von der Anzeigeschicht; und

    Anordnen eines Reflektors an einer Seite der Haftschicht entfernt von dem Substratglas, wobei

    der Reflektor ein diffus reflektierendes Polymerfilmmaterial ist,

    das diffus reflektierende Polymerfilmmaterial ein Material auf PET-Basis ist,

    die Dicke desselben 170-350 µm beträgt,

    das diffus reflektierende Polymerfilmmaterial mit diffus reflektierenden Partikeln gefüllt ist, die eine diffuse Reflektion auf einfallendes Licht der Anzeigestruktur ermöglichen und

    die optische Eigenschaft der Haftschicht angepasst ist, um das einfallende Licht und das austretende Licht zu übertragen, so dass dasselbe durch die Haftschicht dringt.


     
    6. Ein Verfahren zum Herstellen einer Elektrobenetzungsanzeigestruktur vom Reflektionstyp, das folgende Schritte aufweist:

    Anordnen einer EFD-Schaltschicht auf einem diffus reflektierenden Polymerfilmmaterial als einen Reflektor;

    Anordnen von Scheibenglas direkt auf der EFD-Schaltschicht oder Verarbeiten eines Vorderscheibenfilms direkt auf der EFD-Schaltschicht durch einen Lösungsprozess, wobei

    das diffus reflektierende Polymerfilmmaterial ein PET-basiertes Material ist und mit diffus reflektierenden Partikeln gefüllt ist, die eine diffuse Reflektion auf einfallendes Licht der Anzeigestruktur ermöglichen.


     


    Revendications

    1. Structure d'affichage de type à réflexion avec un réflecteur diffus à haute luminosité, comprenant un panneau en verre, une couche d'affichage et un verre de substrat, dans laquelle
    le réflecteur est réalisé en un matériau de film polymère à réflexion diffuse, où le matériau de film polymère à réflexion diffuse est un matériau à base de PET, et dont l'épaisseur est de 175 à 350 µm,
    le verre de panneau, la couche d'affichage, le verre de substrat et le réflecteur sont empilés en séquence, et
    le réflecteur est disposé sous le verre de substrat,
    dans laquelle
    une couche adhésive est disposée entre le verre de substrat et le matériau de film polymère à réflexion diffuse, laquelle est utilisée pour faire adhérer le matériau de film polymère à réflexion diffuse au côté de substrat de la structure d'affichage; et
    la propriété optique de la couche adhésive est adaptée pour transmettre la lumière incidente et la lumière émergente de manière à pénétrer à travers la couche adhésive.
     
    2. Structure d'affichage de type à réflexion avec un réflecteur diffus à haute luminosité selon la revendication 1, dans laquelle le matériau de film polymère à réflexion diffuse est rempli de particules à réflexion diffuse permettant une réflexion diffuse à la lumière incidente de la structure d'affichage.
     
    3. Structure d'affichage de type à réflexion à électro-mouillage, utilisant la structure d'affichage avec un réflecteur diffus à haute luminosité selon l'une quelconque des revendications 1 ou 2, dans laquelle la couche d'affichage est une couche de commutation EFD.
     
    4. Structure d'affichage de type à réflexion à électro-mouillage, comprenant un panneau avant, une couche de commutation EFD et un réflecteur, dans laquelle
    le panneau avant, la couche de commutation EFD et le réflecteur sont empilés en séquence,
    le panneau avant comprend un verre de panneau ou un film, et
    le réflecteur est un film polymère à réflexion diffuse à base de PET et dont l'épaisseur est de 175 à 350 µm,
    dans laquelle
    le matériau de film polymère à réflexion diffuse est un matériau à base de PET, et le matériau de film polymère à réflexion diffuse est rempli de particules à réflexion diffuse permettant une réflexion diffuse à la lumière incidente de la structure d'affichage à électro-mouillage.
     
    5. Procédé de fabrication d'une structure d'affichage de type à réflexion avec un réflecteur diffus à haute luminosité, comprenant les étapes suivantes consistant à:

    disposer une couche d'affichage sur le verre de substrat;

    disposer le verre de panneau sur la couche d'affichage;

    disposer une couche adhésive d'un côté du verre de substrat éloigné de la couche d'affichage; et

    disposer un réflecteur d'un côté de la couche adhésive éloigné du verre de substrat,

    dans lequel

    le réflecteur est un matériau de film polymère à réflexion diffuse,

    le matériau de film polymère à réflexion diffuse est un matériau à base de PET,

    dont l'épaisseur est de 170 à 350 µm,

    le matériau de film polymère à réflexion diffuse est rempli de particules à réflexion diffuse permettant une réflexion diffuse à la lumière incidente de la structure d'affichage, et

    la propriété optique de la couche adhésive est adaptée pour transmettre la lumière incidente et la lumière émergente de manière à pénétrer à travers la couche adhésive.


     
    6. Procédé de fabrication d'une structure d'affichage de type à réflexion à électro-mouillage, comprenant les étapes suivantes consistant à:

    disposer une couche de commutation EFD sur un matériau de film polymère à réflexion diffuse comme réflecteur;

    disposer le verre de panneau directement sur la couche de commutation EFD, ou traiter un film de panneau avant directement sur la couche de commutation EFD par un procédé à solution,

    dans lequel

    le matériau de film polymère à réflexion diffuse est un matériau à base de PET, et est rempli de particules à réflexion diffuse permettant une réflexion diffuse à la lumière incidente de la structure d'affichage.


     




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    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description