CN103955011A - Display structure with high-brightness diffuse reflector and manufacturing method thereof - Google Patents
Display structure with high-brightness diffuse reflector and manufacturing method thereof Download PDFInfo
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- CN103955011A CN103955011A CN201410159647.9A CN201410159647A CN103955011A CN 103955011 A CN103955011 A CN 103955011A CN 201410159647 A CN201410159647 A CN 201410159647A CN 103955011 A CN103955011 A CN 103955011A
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Abstract
The invention discloses a display structure with a high-brightness diffuse reflector. The display structure comprises panel glass, a display layer and substrate glass, wherein a high-brightness diffuse-reflection thin polymer film material is arranged on the lower surface of the substrate glass, and the panel glass, the display layer, the substrate glass and the diffuse-reflection thin polymer film material are stacked in sequence. The invention further discloses an electro-wetting display structure based on the display structure, an in-cell type electro-wetting display structure and a manufacturing method of the display structure. According to the display structure and the manufacturing method, a diffuse-reflection thin polymer film with a high brightness is arranged on the lower surface of a substrate or the display layer of a panel display structure and serves as a diffuse reflection layer or a reflector, so that required diffuse reflection and a required contrast ratio which are approximate to those of paper are provided. Compared with the vacuum coating process, the manufacturing method is simpler, and the expensive vacuum coating process is avoided, so that the manufacturing cost is greatly lowered.
Description
Technical field
The present invention relates to a kind of display structure, relate to especially a kind of display structure with high brightness diffuse reflector.
Background technology
At present, display unit for word, image, video and interactive interface generally adopts flat pannel display structure, in this field, widely used have, for example, micro-fluidic display system (Electro fluidic display system, EFD), electrophoretic display system (Electrophoretic display system), plane conversion (In-Plane-Switching, IPS), electro-osmosis display system (Elctro-osmosis display system), and liquid crystal display LCD etc.A part of display structure wherein adopts reflective demonstration, for example, is applied to the EFD of electric ink (E ink) or Electronic Paper.EFD also can be described as electric moistening demonstration (Electrowetting display), and electricity is wetting to be referred to by changing voltage between drop and insulated substrate, changes the wetting state of drop on substrate, changes contact angle, makes the phenomenon of drop generation deformation, displacement.The so-called wetting a kind of fluid that refers to solid surface is by process that one other fluid replaced.Liquid is sprawled at solid surface energy, and solid-liquid contact face has the trend of expansion, and liquid is greater than its cohesion to the adhesion of solid surface, is exactly wetting.Liquid can not be sprawled at solid surface, and surface of contact has and is shrunk to spherical trend, is exactly nonwetting, and nonwetting is exactly that liquid is less than its cohesion to the adhesion of solid surface.The wettability effect on water resistant surface can change with voltage (therefore named electricity is wetting), makes surface become more hydrophilic (moistening).Because original hydrophobic surface becomes more water suction now, the inert fluid of original and hydrophobic surface good contact, for example oil reservoir, has to change its form.This interface property control is the basis of electric wetted applications.About the application of the moistening displaying principle of electricity, at patent WO03071347, and be described later in detail in 425383385 contents of delivering of publication " nature ", the structural drawing of its principle as shown in Figure 1, when apply a voltage V on electrode time, electric charge is at the lower surface accumulation of water layer, then its electrostatic force F
elovercome electric capacity power F
cappuncture oil reservoir, cover suprabasil hydrophobic coating, water layer is contacted with originally hydrophobic coating under the effect of voltage.By further increase voltage, the oil reservoir puncturing can be pushed by a jiao toward pixel region.If elimination voltage, compressed oil is by the state being back to before applying voltage.
Compare other display techniques, EFD display technique and structure thereof have many advantages, because it has high photoelectric efficiency and switch speed simultaneously.EFD unit is an iris ring light filter in essence.Under the opening driving at voltage, its visual appearance depends on the reflecting material showing in the time that colored oil reservoir disappears.Good reflecting material, can be display unit good diffuse effect is provided, and with the true effect of plan that also original subscriber reads on paper, meanwhile, also provides good contrast.
In existing Electronic Paper, realizing transparent EPD needs horizontal drive principle, conventionally adopts Al, that Ag plated film is applied to bottom is on glass, forms minute surface or reflecting surface, large with paper difference in transparent display.
And the papery that realizes is in the market intended the display screen of true effect and is comprised that Sony, Amazon kindle's etc. is called electric ink or electronic-paper display screen, it is based on electrophoresis showed (EPD) principle, and be generally all vertical the or longitudinal drive principle based on EPD, be embodied as reflective (nontransparent) display system.Its paper effect by adopting technique for vacuum coating in substrate, for example, realizes by spraying TiO2 particle formation plated film.Although the object of TiO2 plated film is the effect that approaches paper as far as possible, its reflectivity is low, and contrast is not high, and with high costs.
Summary of the invention
The object of the invention is to overcome the defect of prior art problem, provide a kind of display structure with high brightness diffuse reflector with and manufacture method.
To achieve these goals, the present invention adopts following technical scheme:
According to an aspect of the present invention, a kind of display structure with high brightness diffuse reflector has been proposed, described display structure comprises face glass, display layer, substrate glasses, wherein, be arranged with reflecting body in substrate glasses, face glass, display layer, substrate glasses and diffuse reflection polymer thin-film material are stacked in order, and wherein said reflecting body is diffuse reflection polymer thin-film material.
Preferably, described diffuse reflection polymer thin-film material is the material based on PET, and its thickness is set to 175um-350um.
Preferably, described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
Preferably, described substrate glasses arranges enough thinly to reduce the light path between display layer and reflecting body; Between described substrate glasses and diffuse reflection polymer thin-film material, be provided with bonding coat, it is for being adhered to diffuse reflection polymer thin-film material the base side of described display structure, and the optical characteristics of described bonding coat is adapted for and makes incident ray and emergent ray penetrate described bonding coat.
According to a further aspect in the invention, proposed the moistening display structure of a kind of electricity, the moistening display structure of described electricity is close with the aforesaid display structure with high brightness diffuse reflector, and wherein, described display layer is EFD switchable layer.
In accordance with a further aspect of the present invention, the moistening display structure of a kind of electricity has been proposed, described display structure comprises front panel, EFD switchable layer and reflecting body, front panel, EFD switchable layer and reflecting body are stacked in order, wherein said front panel comprises face glass or film, and described reflecting body is the diffuse reflection polymer thin-film material based on PET.
Preferably, described diffuse reflection polymer thin-film material is the material based on PET, and described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
In accordance with a further aspect of the present invention, proposed a kind of manufacture method of the display structure with high brightness diffuse reflector, it comprises the following steps: in a substrate glasses, display layer is set; Installation surface glass sheet on described display layer; Away from a side of described display layer, one bonding coat is set in substrate glasses; Away from a side of substrate glasses, one reflecting body is set at described bonding coat, wherein, described reflecting body is diffuse reflection polymer thin-film material, and the optical characteristics of described bonding coat is adapted for and makes incident ray and emergent ray penetrate described bonding coat.
Preferably, described diffuse reflection polymer thin-film material is the material based on PET, and its thickness is set to 175um-350um, and described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
In accordance with a further aspect of the present invention, propose the manufacture method of the moistening display structure of a kind of electricity, comprised the following steps: on the diffuse reflection thin polymer film as reflecting body, EFD switchable layer has been set; Directly installation surface glass sheet on EFD switchable layer, or directly on EFD switchable layer, process front panel film by solution processing procedure; Wherein, described diffuse reflection polymer thin-film material is the material based on PET, and described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
Can be used for any nontransparent formula display technique according to display structure of the present invention and manufacture method, include but not limited to that electric moistening display system, micro-fluidic display system, electrophoretic display system, plane conversion show, electro-osmosis display system, and liquid crystal display.
Compared with prior art, the present invention has following remarkable advantage and beneficial effect:
According to display structure of the present invention and manufacture method, under the substrate of existing display structure, place an irreflexive thin polymer film as reflecting body, so that the required diffuse reflection that approaches paper and contrast to be provided.After transparent display board, or the integrated thin polymer film that contains diffuse reflective particles of backside of substrate, realize like this electronic display of complete inheriting tradition paper, by suitable configuration, can make the reflection of this membraneous material high to 93% surround lighting, this is more much higher than paper (approximately 80%).With existing employing technique for vacuum coating, for example apply TiO2 plated film and compare, manufacture craft of the present invention is simply too much compared with vacuum coating, has evaded expensive technique for vacuum coating, greatly reduces cost of manufacture.
Brief description of the drawings
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
Figure 1 shows that the principle schematic of EFD display structure;
Figure 2 shows that according to the schematic diagram of the display structure of one embodiment of the invention;
Figure 3 shows that the schematic diagram of display structure according to another embodiment of the present invention;
Figure 4 shows that according to the schematic diagram of the display structure of an embodiment more of the present invention.
Embodiment
As shown in Figure 2, for according to an embodiment of the display structure with high brightness diffuse reflector of the present invention, described display structure comprises face glass 1, display layer 2, substrate glasses 3.In existing reflective display technique, for obtaining unrestrained launching effect, need 3 times a diffuse reflector be set again in substrate glasses, or Lambertian reflector material.And in the present embodiment, in substrate glasses, diffuse reflection polymer thin-film material 4 being set for 3 times, face glass 1, display layer 2, substrate glasses 3 and diffuse reflection polymer thin-film material 4 are stacked in order.Described diffuse reflection thin polymer film is as reflecting body and be configured such that incident ray 5 produces diffuse reflection.In order to improve durability and reliability, preferably, described polymer thin-film material requires penetrability little, has enough thickness, in addition, there is certain physical strength, for example there is enough wear-resisting and resistance to tear strength, to meet the needs of manufacturing process, and, need to meet reflective demonstration, the needed contrast of for example Electronic Paper and diffuse reflection.
In order to obtain good diffuse effect, and enough contrasts, to realize the viewing effect that approaches paper, as an example, described diffuse reflection polymer thin-film material 4 adopts Melinex 329, Melinex 339 materials, or has high irreflexive membraneous material, and Melinex material is based on PET, be filled with diffuse reflection particulate, for example BaTiO
3.They can reflect high to 93% surround lighting, and this is more much higher than paper (approximately 80%), realizes thus the diffuse reflection of high brightness.As reflecting body, film thickness can be 175-350um, preferably adopts 175 or the thickness of 350um, like this can be thicker than general paper, and one of this reason that to be optical characteristics improve.
As shown in Figure 3, for according to another embodiment of the display structure with high brightness diffuse reflector of the present invention, under "On" state at display layer 2 in printing opacity, incident ray 5 is through face glass 1, display layer 2 and substrate glasses 3, then at reflecting body, the surface that is diffuse reflection polymer thin-film material 4 produces reflection, and its emergent ray 6 penetrates to face glass 1 through original optical path again.In described display structure, needing the key issue solving is the interval dwindling between display layer 2 and reflecting body, to improve the optical efficiency of the flat pannel display structure with outer thin membrane material reflecting body.If interval is too large, the refraction effect between different medium will become obviously, thereby can limit the effective resolution showing due to the optical distortion that refraction produces, and the fineness showing.Therefore, according to required display resolution or fineness, the present embodiment, on the basis of last embodiment, is processed thinlyyer by substrate glasses 3, can reduce like this light path between display layer 2 and reflecting body.For example, the substrate glasses of display structure 3 thickness are preferably set to be less than 0.5mm, are more preferably set to be less than 0.2mm.
In order further to improve optical property, can use the bonding coat 7 with suitable optical characteristics, papery reflecting body is adhered to the base side of described display structure.On the basis of previous embodiment, between described substrate glasses 3 and diffuse reflection polymer thin-film material 4, be provided with bonding coat 7, it is for being adhered to diffuse reflection polymer thin-film material 4 base side of described display structure.The optical characteristics of described bonding coat 7 is adapted for and makes incident ray 5 and emergent ray 6 penetrate described bonding coat 7.
In accordance with a further aspect of the present invention, propose a kind of manufacture method of the display structure with high brightness diffuse reflector, comprised the following steps: in a substrate glasses 3, display layer 2 has been set; Installation surface glass sheet 1 on described display layer 2; Away from a side of described display layer 2, a bonding coat 7 is set in substrate glasses 3; Away from a side of substrate glasses 3, a diffuse reflection polymer thin-film material 4 is set at described bonding coat 7, the optical characteristics of wherein said bonding coat 7 is adapted for and makes incident ray 5 and emergent ray 6 penetrate described bonding coat 7.For example, thickness that can described substrate glasses 3 is set to be less than 0.5mm, is more preferably set to be less than 0.2mm.Preferably, described diffuse reflection polymer thin-film material 4 is used as reflecting body and is configured such that incident ray 5 produces diffuse reflection.
The above-mentioned display structure with high brightness diffuse reflector according to the present invention all can be applicable to various flat pannel display structures, particularly reflection-type display structure and/or flexible display structure.Displaying principle, mechanical property and procedure for processing based on the moistening display unit of electricity, the display structure with high brightness diffuse reflector according to the present invention is particularly useful for electric moistening display unit.
As shown in Figure 4, for the moistening display structure of electricity with high brightness diffuse reflector according to the present invention, its concrete stepped construction and the above-mentioned display structure with high brightness diffuse reflector are close, in the moistening display structure of described electricity, described display layer 2 is EFD switchable layer 9, can be with reference to shown in figure 1 about the example of the concrete structure of EFD switchable layer 9.In fact, display structure of the present invention can well coordinate with the moistening display technique of electricity, so that the splendid the same display effect of sensitive paper to be provided.
According to the present embodiment, the further advantage that thin polymer film reflecting body is applied to the moistening display structure of described electricity is, its front panel can directly be processed on the thin polymer film as reflecting body, such structured polymer film can be described as in-cell type diffuser (diffuser), and general structure can be described as the moistening display structure of in-cell type electricity.Front panel part can comprise face glass 1 or front panel film 8, and EFD switchable layer 9.The front panel film 8 of such front panel part can be manufactured based on solution processing procedure, and can to adopt the liquid using for technological process be inertia and under technological temperature the membraneous material of stable in properties, for example can adopt Melinex 329 or Melinex 339.Optical stack structure after simplification as shown in Figure 4.
This structure is very efficient, because now reflecting body is directly adjacent to switchable optics layer.Standard P ET height to approximately 120 degree degree Celsius under still there is good dimensional stability.Dupont Teijin company has announced the PET of novel thermally-stabilised rank, and it can lowly be subject to the high technological temperature to 180 degrees Celsius.More in the situation of high technology temperature, can use PEN substrate at needs, its cost is higher, but can put it into commercial operation.
Can be used for any nontransparent formula display technique according to display structure of the present invention and manufacture method, include but not limited to that electric moistening display system, micro-fluidic display system, electrophoretic display system, plane conversion show, electro-osmosis display system, and liquid crystal display.
The above, be preferred embodiment of the present invention, and the present invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.In protection scope of the present invention, its technical scheme and/or embodiment can have various modifications and variations.Even if individual other technical characterictic is quoted in different claims, the present invention also can comprise the embodiment of total these features.
Claims (10)
1. one kind has the display structure of high brightness diffuse reflector, it is characterized in that, described display structure comprises face glass, display layer, substrate glasses, wherein, be arranged with reflecting body in substrate glasses, face glass, display layer, substrate glasses and diffuse reflection polymer thin-film material are stacked in order, and wherein said reflecting body is diffuse reflection polymer thin-film material.
2. a kind of display structure with high brightness diffuse reflector according to claim 1, is characterized in that, described diffuse reflection polymer thin-film material is the material based on PET, and its thickness is set to 175um-350um.
3. a kind of display structure with high brightness diffuse reflector according to claim 2, is characterized in that, described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
4. a kind of display structure with high brightness diffuse reflector according to claim 1, is characterized in that, described substrate glasses arranges enough thinly to reduce the light path between display layer and reflecting body; Between described substrate glasses and diffuse reflection polymer thin-film material, be provided with bonding coat, it is for being adhered to diffuse reflection polymer thin-film material the base side of described display structure, and the optical characteristics of described bonding coat is adapted for and makes incident ray and emergent ray penetrate described bonding coat.
5. the moistening display structure of electricity, is characterized in that, the moistening display structure of described electricity uses the display structure with high brightness diffuse reflector as described in claim 1-5 any one, and wherein, described display layer is EFD switchable layer.
6. the moistening display structure of electricity, it is characterized in that, described display structure comprises front panel, EFD switchable layer and reflecting body, front panel, EFD switchable layer and reflecting body are stacked in order, wherein said front panel comprises face glass or film, and described reflecting body is the diffuse reflection polymer thin-film material based on PET.
7. the electric moistening display structure of one according to claim 6, it is characterized in that, described diffuse reflection polymer thin-film material is the material based on PET, and described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
8. a manufacture method with the display structure of high brightness diffuse reflector, is characterized in that, comprises the following steps: in a substrate glasses, display layer is set; Installation surface glass sheet on described display layer; Away from a side of described display layer, one bonding coat is set in substrate glasses; Away from a side of substrate glasses, one reflecting body is set at described bonding coat, wherein, described reflecting body is diffuse reflection polymer thin-film material, and the optical characteristics of described bonding coat is adapted for and makes incident ray and emergent ray penetrate described bonding coat.
9. the manufacture method of a kind of display structure with high brightness diffuse reflector according to claim 8, it is characterized in that, described diffuse reflection polymer thin-film material is the material based on PET, its thickness is set to 175um-350um, described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
10. a manufacture method for the moistening display structure of electricity, is characterized in that, comprises the following steps: on the diffuse reflection thin polymer film as reflecting body, EFD switchable layer is set; Directly installation surface glass sheet on EFD switchable layer, or directly on EFD switchable layer, process front panel film by solution processing procedure; Wherein, described diffuse reflection polymer thin-film material is the material based on PET, and described diffuse reflection polymer thin-film material is filled with diffuse reflection particulate, and it is configured such that incident ray produces diffuse reflection.
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Application publication date: 20140730 |