WO2016197698A1 - 显示基板及其制备方法和显示装置 - Google Patents

显示基板及其制备方法和显示装置 Download PDF

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Publication number
WO2016197698A1
WO2016197698A1 PCT/CN2016/079264 CN2016079264W WO2016197698A1 WO 2016197698 A1 WO2016197698 A1 WO 2016197698A1 CN 2016079264 W CN2016079264 W CN 2016079264W WO 2016197698 A1 WO2016197698 A1 WO 2016197698A1
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WIPO (PCT)
Prior art keywords
layer
fresnel lens
substrate
pixel
fresnel
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Ceased
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PCT/CN2016/079264
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English (en)
French (fr)
Inventor
周波
周晓东
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Priority to US15/511,328 priority Critical patent/US10018750B2/en
Publication of WO2016197698A1 publication Critical patent/WO2016197698A1/zh
Anticipated expiration legal-status Critical
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H10K59/879—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/17—Passive-matrix OLED displays

Definitions

  • the present invention belongs to the field of display technologies, and in particular, to a display substrate, a method for fabricating the same, and a display device.
  • OLED organic light-emitting diode
  • Fresnel lenses enable the light emitted by the source to converge, parallel or diverge.
  • the Fresnel lens can be divided into a Fresnel lens 301 equivalent to a convex lens as shown in FIG. 1 and a Fresnel lens 302 equivalent to a concave lens as shown in FIG. 2.
  • the Fresnel lens 301 equivalent to a convex lens can converge or parallel the light emitted by the light source
  • the Fresnel lens 302 lens equivalent to a concave lens can diverge the light emitted by the light source.
  • the Fresnel lens includes: a plurality of concentric circles on one side thereof, the plurality of concentric circles including a first elliptical arc 3011 located at the center (or a second elliptical arc) 3021) and a first protrusion 3012 (or second protrusion 3022) between adjacent two concentric circles; and a plane on the other side opposite to the one side.
  • the first elliptical arc 3011 and the first protrusion 3012 of the Fresnel lens 301 equivalent to a convex lens form a curved surface of the convex lens, and when the light is incident from the lower focus, the phenanthrene equivalent to the convex lens
  • the Neel lens 301 enables the outgoing rays to converge or be parallel.
  • the second elliptical arc 3021 and the second protrusion 3022 of the Fresnel lens 302 equivalent to a concave lens form a curved surface of the concave lens, and when the light is incident from the underlying virtual focus, it is equivalent to a concave lens.
  • the Fresnel lens 302 enables the exiting rays to diverge (i.e., the inverse extension of the exiting rays converge at the virtual focus).
  • an object of the present invention is to provide a display substrate, a method of fabricating the same, and a display device including the display substrate.
  • the display substrate can realize the convergence or divergence of the pixel unit illumination, thereby realizing the highlight display of the display substrate or distributing the light of the display substrate more uniformly, so that the observer obtains the same in a larger viewing angle range. Visual effect.
  • Some embodiments of the present invention provide a display substrate including a substrate substrate and a pixel layer disposed on the substrate substrate, the pixel layer including a plurality of pixel units distributed in a matrix;
  • the display substrate further comprises a Fresnel lens layer, the Fresnel lens layer comprises a plurality of Fresnel lenses; each of the pixel units is located on a focal plane of at least one of the Fresnel lenses.
  • each of the pixel units includes a plurality of sub-pixels, each sub-pixel corresponding to a Fresnel lens, each of the sub-pixels being located on a focal plane of a corresponding Fresnel lens.
  • each of the Fresnel lenses is equivalent to a concave lens or a convex lens.
  • the Fresnel lens layer is disposed on the pixel layer, and a package substrate is disposed on the Fresnel lens layer.
  • a package substrate is disposed on the pixel layer, and the Fresnel lens layer is disposed on the package substrate.
  • the display substrate further includes a protective layer on a side of the Fresnel lens layer away from the package substrate, and a refractive index of a material forming the protective layer is not less than forming each of the Fresnel The refractive index of the material of the lens.
  • the display substrate further includes a sealant for sealing the base substrate and the package substrate; wherein the sealant is located at a periphery of the pixel layer.
  • the Fresnel lens layer comprises a plurality of Fresnel lenses, each of the Fresnel lenses comprising: a plurality of concentric circles on one side of the Fresnel lens layer, the plurality of concentric circles The circle consists of an elliptical arc at the center and two adjacent concentric circles a convex portion; and a plane on the other side opposite to the one side.
  • the protrusion comprises a zigzag arc
  • the elliptical arc and the zigzag arc form a curved surface of a concave lens or a convex lens.
  • the protrusion is formed by two waists of an isosceles triangle, and an angle bisector of a vertex angle between the waists of the isosceles triangle is perpendicular to the Fresnel lens layer.
  • Some embodiments of the present invention provide a method for fabricating the above display substrate, comprising the following steps:
  • the substrate substrate coated with the sealant is aligned with the package substrate.
  • Some embodiments of the present invention provide a method for fabricating the above display substrate, comprising the following steps:
  • a Fresnel lens layer is attached to the package substrate.
  • the preparation method further comprises the steps of preparing the Fresnel lens layer and preparing a protective layer on the Fresnel lens layer A step of.
  • Some embodiments of the present invention provide a display device including the display substrate described above.
  • the display substrate of the present invention a method of fabricating the same, and a display device, since a Fresnel lens layer is provided on the display substrate, and each pixel unit is located in at least one Fresnel lens of the Fresnel lens layer On the focal plane, it is thus possible to achieve convergence or divergence of the illumination of each pixel unit. Thereby realizing the highlight display of the display substrate or distributing the light of the display substrate more uniformly, so that the observer is in a larger view Get the same visual effect in the angular range.
  • FIG. 1 is a schematic view showing the structure of a Fresnel lens equivalent to a convex lens in the prior art.
  • FIG. 2 is a schematic view showing the structure of a Fresnel lens equivalent to a concave lens in the prior art.
  • FIG. 3 is a schematic structural view of a display substrate according to Embodiments 1 and 2 of the present invention, in which a Fresnel lens layer equivalent to a convex lens is disposed on a pixel layer.
  • FIG. 4 is a schematic structural view of a display substrate according to Embodiments 1 and 3 of the present invention, in which a Fresnel lens layer equivalent to a convex lens is disposed on a package substrate.
  • FIG. 5 is a schematic structural view of a display substrate in Embodiment 1 of the present invention, in which a Fresnel lens layer equivalent to a concave lens is disposed on a pixel layer.
  • Fig. 6 is a structural schematic view showing a Fresnel lens equivalent to a convex lens having a simplified structure in Embodiment 1 of the present invention.
  • Fig. 7 is a structural schematic view showing a Fresnel lens equivalent to a concave lens having a simplified structure in Embodiment 1 of the present invention.
  • Fresnel lens equivalent to a convex lens 3011. first elliptical arc; 3012. first protrusion;
  • the present embodiment provides a display substrate including a base substrate 10 and a pixel layer 20 disposed on the base substrate 10.
  • the pixel layers 20 are arranged in a matrix. Multiple pixel units;
  • the display substrate further comprises a Fresnel lens layer, the Fresnel lens layer comprises a plurality of Fresnel lenses; each of the pixel units is located on a focal plane of at least one of the Fresnel lenses.
  • the Fresnel lens layer may include a plurality of Fresnel lenses such that each pixel unit is located on a focal plane of at least one Fresnel lens of the Fresnel lens layer.
  • the Fresnel lens layer refers to the layer in which the Fresnel lens is located.
  • the Fresnel lens layer refers to a layer in which the Fresnel lens 301 equivalent to a convex lens is located; in FIG. 5, the Fresnel lens layer is equivalent to The layer of the concave lens of the Fresnel lens 302.
  • each pixel unit is located on a focal plane of at least one Fresnel lens of the Fresnel lens layer, convergence or divergence of illumination of each pixel unit can be achieved. .
  • the highlight display of the display substrate or the light distribution of the display substrate can be more uniform, so that the observer can obtain the same visual effect in a larger viewing angle range.
  • the focal plane is the plane in which the focus of the Fresnel lens 301 equivalent to the convex lens is located or the plane in which the virtual focus of the Fresnel lens 302 equivalent to the concave lens is located.
  • each of the pixel units includes a plurality of sub-pixels 201, each sub-pixel 201 corresponding to a Fresnel lens, each of the sub-pixels 201 being located on a focal plane of a corresponding Fresnel lens.
  • each pixel unit includes three sub-images of red, green and blue.
  • Prime 201 may also include more sub-pixels 201 of other types of the prior art. Since each sub-pixel 201 is located on the focal plane of the corresponding Fresnel lens, the light emitted by each sub-pixel 201 becomes concentrated light, parallel light or divergent light after passing through the corresponding Fresnel lens.
  • the Fresnel lens is equivalent to a concave lens or a convex lens.
  • the Fresnel lens when the Fresnel lens is equivalent to a convex lens, the Fresnel lens converges or parallels the light of each sub-pixel 201, thereby realizing highlighting of the sub-pixel 201.
  • the Fresnel lens when the Fresnel lens is equivalent to a concave lens, the Fresnel lens diverges the light of each sub-pixel 201, so that the light of each sub-pixel 201 can be distributed more uniformly, so that the observer can obtain the same in a larger viewing angle range. Visual effects.
  • the Fresnel lens layer ie, the layer where the Fresnel lens 301 equivalent to the convex lens is located
  • the Fresnel lens layer is disposed on the pixel layer 20 at the Fresnel lens.
  • a package substrate 40 is provided on the layer.
  • the Fresnel lens layer is located inside the package substrate 40.
  • the Fresnel lens layer can be directly formed on the pixel layer 20 by a stamper method.
  • the pixel layer 20 is provided with a package substrate 40, and the Fresnel lens layer (ie, a layer where the Fresnel lens 301 equivalent to a convex lens is located) is disposed on On the package substrate 40.
  • the Fresnel lens layer can be separately prepared, and then the Fresnel lens layer is attached to the package substrate 40.
  • the display substrate further includes a protective layer 60 on a side of the Fresnel lens layer away from the package substrate 40, and a refractive index of a material forming the protective layer 60 is not less than The refractive index of the material of each Fresnel lens (i.e., the material from which the Fresnel lens layer is formed).
  • the protective layer 60 can function to protect the Fresnel lens layer. Meanwhile, since the refractive index of the material forming the protective layer 60 is not less than the refractive index of the material forming each Fresnel lens, it is possible to prevent the light from entering the protective layer 60 from the Fresnel lens layer in the Fresnel lens layer. Total reflection occurs at the interface between the protective layer 60 and the light of the pixel layer 20 is refracted from the protective layer 60.
  • the display substrate further includes the substrate substrate 10 and the The encapsulating substrate 40 is sealed with a sealant 50; the sealant is located at the periphery of the pixel layer 20.
  • the sealant 50 seals the base substrate 10 and the package substrate 40 to form a display substrate.
  • the Fresnel lens layer includes a plurality of Fresnel lenses
  • each of the Fresnel lenses includes: a plurality of Fresnel lens layers on one side. a concentric circle, the plurality of concentric circles including an elliptical arc at a center and a protrusion between adjacent two concentric circles; and another one of the Fresnel lens layers opposite to the one side The plane of the side.
  • Fresnel lens composed of a plurality of concentric circles can make the light incident from the plane side converge or parallel when equivalent to the convex lens, and can be made from the plane side when equivalent to the concave lens. The incident light diverges.
  • the protrusion comprises a zigzag arc, and the zigzag arc and the elliptical arc form a curved surface of a concave lens or a convex lens.
  • the Fresnel lens when the Fresnel lens is equivalent to a convex lens, the elliptical arc and the zigzag arc have the same focus to achieve convergence or parallelism of the light emitted by the pixel unit; when the Fresnel lens is equivalent to a concave lens The elliptical arc and the jagged arc have the same virtual focus to achieve the divergence of the light emitted by the pixel unit.
  • the protrusion is formed by two waists of an isosceles triangle, and an angle bisector of a vertex angle between the waists of the isosceles triangle is perpendicular to the Fresnel lens layer.
  • the fact that the angle bisector is perpendicular to the Fresnel lens layer means that the angle bisector is perpendicular to a plane in which the Fresnel lens layer is located.
  • the focal length of the protrusion can be adjusted by adjusting the angle between the two waists of the isosceles triangle, so that the The focal length of the protrusion matches the focal length of the central elliptical arc (ie, such that the protrusion and the central elliptical arc have the same focus).
  • the Fresnel lens 303 equivalent to a convex lens includes a third elliptical arc 3031 located at the center and a third protrusion 3032 located between adjacent two concentric circles.
  • the Fresnel lens 304 equivalent to a concave lens includes a center.
  • a Fresnel lens having such a simplified structure is easy to manufacture and has a low manufacturing cost.
  • the present embodiment provides a method for preparing the display substrate, which includes the following steps S1 to S4.
  • a transparent resin is coated on the base substrate 10 on which the pixel layer 20 is formed to form a transparent resin layer, wherein the refractive index of the transparent resin is larger than the refractive index of the pixel layer 20.
  • the transparent resin layer may be hot-pressed by using a mold corresponding to the Fresnel lens 303 or 304 in FIG. 6 or FIG. 7 to form the one shown in FIG. 6 or FIG. 7 .
  • Fresnel lens 303 or 304 may be hot-pressed by using a mold corresponding to the Fresnel lens 303 or 304 in FIG. 6 or FIG. 7 to form the one shown in FIG. 6 or FIG. 7 .
  • the alignment tool can be used to align the substrate substrate 10 with the package substrate 40 and then place them on the cassette.
  • the curing step or the like of the sealant 50 of the display substrate after the cassette is continuously performed to finally prepare the display substrate, which will not be described in detail herein.
  • the present embodiment provides a method for preparing the display substrate, including the following steps. S1' to S4'.
  • a sealant 50 is applied on the base substrate 10 on which the pixel layer 20 is formed, wherein the sealant 50 is located at the periphery of the pixel layer 20.
  • the package substrate 40 is paired with the base substrate 10 coated with the sealant 50.
  • the alignment tool can be used to align the substrate substrate 10 with the package substrate 40 and then place them on the cassette.
  • S3' a step of preparing a Fresnel lens layer; and a step of preparing a protective layer 60 on the Fresnel lens layer.
  • the polyolefin material may be injected into a sheet, the surface of the sheet is flat on one side, and the other side opposite to the opposite side is formed with concentric circles from small to large, and formed between adjacent concentric circles. Raised.
  • the focus of the Fresnel lens is located on the pixel layer 20, that is, in the plane in which the pixel layer 20 is located.
  • a protective layer 60 is coated on the Fresnel lens layer, and the refractive index of the material forming the protective layer 60 is not less than that of the material forming each Fresnel lens (ie, the material forming the Fresnel lens layer). Refractive index. This allows the light of the pixel layer 20 to be refracted from the protective layer 60; at the same time, the Fresnel lens layer can be protected.
  • the Fresnel lens layer separately prepared in step S3' is attached to the package substrate 40 such that each sub-pixel 201 of each pixel unit in the pixel layer 20 is located at the focal point of a corresponding Fresnel lens.
  • a display substrate is formed on the plane.
  • the display substrate may also include other functional layers as needed, and will not be described in detail herein.
  • the embodiment provides a display device, which includes the above display base board.
  • the display device can be any product or component having a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.
  • a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

一种显示基板及其制造方法和一种包括该显示基板的显示装置。显示基板包括衬底基板（10）和设置于其上的像素层（20），像素层（20）包括呈矩阵分布的多个像素单元（201）。显示基板还包括菲涅尔透镜层，菲涅尔透镜层包括多个菲涅尔透镜（301）。每个像素单元（201）位于至少一个菲涅尔透镜（301）的焦平面上。

Description

显示基板及其制备方法和显示装置 技术领域
本发明属于显示技术领域，具体涉及一种显示基板及其制备方法和一种显示装置。
背景技术
有机发光二极管(Organic Light-Emitting Diode，缩写OLED)显示装置由于其像素单元本身能够发光，因此不需要背光源，从而成为新一代显示技术的研发热点。
菲涅尔透镜能够使光源所发出的光汇聚、平行或发散。一般地，菲涅尔透镜可以分为如图1所示的等效为凸透镜的菲涅尔透镜301和如图2所示的等效为凹透镜的菲涅尔透镜302。等效为凸透镜的菲涅尔透镜301能够使光源所发出的光汇聚或平行，等效为凹透镜的菲涅尔透镜302透镜能够使光源所发出的光发散。
如图1(或图2)所示，菲涅尔透镜包括：位于其一侧的多个同心圆，所述多个同心圆包括位于中心的第一椭圆弧线3011(或第二椭圆弧线3021)和位于相邻两个同心圆之间的第一凸起3012(或第二凸起3022)；和位于与所述一侧相对的另一侧的平面。
如图1所示，等效为凸透镜的菲涅尔透镜301的第一椭圆弧线3011和第一凸起3012形成该凸透镜的曲面，当光线从下方的焦点入射时，等效为凸透镜的菲涅尔透镜301能使出射光线汇聚或平行。
如图2所示，等效为凹透镜的菲涅尔透镜302的第二椭圆弧线3021和第二凸起3022形成该凹透镜的曲面，当光线从下方的虚焦点入射时，等效为凹透镜的菲涅尔透镜302能使出射光线发散(即，出射光线的反向延长线汇聚于所述虚焦点)。
发明内容
针对现有技术的显示基板和显示装置中无法对光源进行汇聚或发散的问题，本发明的目的是提供一种显示基板及其制备方法和一种包括所述显示基板的显示装置。所述显示基板能够实现像素单元发光的汇聚或发散，从而实现所述显示基板的高亮显示或可以将所述显示基板的光线分布得更均匀，使观察者在更大视角范围内获得同样的视觉效果。
本发明的一些实施例提供了一种显示基板，该显示基板包括衬底基板和设置在所述衬底基板上的像素层，所述像素层包括呈矩阵分布的多个像素单元；
其中，所述显示基板还包括菲涅尔透镜层，所述菲涅尔透镜层包括多个菲涅尔透镜；每个所述像素单元位于至少一个所述菲涅尔透镜的焦平面上。
可选地，每个所述像素单元包括多个子像素，每个子像素与一个菲涅尔透镜对应，每个所述子像素位于对应的菲涅尔透镜的焦平面上。
可选地，每个所述菲涅尔透镜等效于凹透镜或凸透镜。
可选地，所述菲涅尔透镜层设置于所述像素层上，并且在所述菲涅尔透镜层上设有封装基板。
可选地，所述像素层上设有封装基板，并且所述菲涅尔透镜层设置于所述封装基板上。
可选地，所述显示基板还包括位于所述菲涅尔透镜层的远离所述封装基板一侧的保护层，并且形成所述保护层的材料的折射率不小于形成每个所述菲涅尔透镜的材料的折射率。
可选地，所述显示基板还包括用于将所述衬底基板和所述封装基板进行密封的密封胶；其中，所述密封胶位于所述像素层的周边。
可选地，所述菲涅尔透镜层包括多个菲涅尔透镜，每个所述菲涅尔透镜包括：位于所述菲涅尔透镜层一侧的多个同心圆，所述多个同心圆包括位于中心的椭圆弧线和位于相邻两个同心圆之 间的凸起；和位于与所述一侧相对的另一侧的平面。
可选地，所述凸起包括呈锯齿状的弧线，所述椭圆弧线和所述锯齿状的弧线形成凹透镜或凸透镜的曲面。
可选地，所述凸起为等腰三角形的两腰构成，且所述等腰三角形的两腰之间的顶角的角平分线与所述菲涅尔透镜层垂直。
本发明的一些实施例提供一种上述显示基板的制备方法，包括以下步骤：
在形成有像素层的衬底基板上涂覆透明树脂以形成透明树脂层，其中，所述透明树脂的折射率大于像素层的折射率；
采用与菲涅尔透镜形状相对应的模具在所述透明树脂层上压膜制备菲涅尔透镜层；
在形成有所述菲涅尔透镜层的所述衬底基板上涂覆密封胶，其中，所述密封胶位于所述像素层的周边；以及
将涂覆有所述密封胶的所述衬底基板与封装基板对盒。
本发明的一些实施例提供一种上述显示基板的制备方法，包括以下步骤：
在形成有像素层的衬底基板上涂覆密封胶，其中，所述密封胶位于所述像素层的周边；
将封装基板与涂覆有所述密封胶的所述衬底基板对盒；以及
在所述封装基板上贴附菲涅尔透镜层。
可选地，在所述封装基板上贴附菲涅尔透镜层的步骤之前，所述制备方法还包括制备所述菲涅尔透镜层的步骤以及在所述菲涅尔透镜层上制备保护层的步骤。
本发明的一些实施例提供一种显示装置，该显示装置包括上述的显示基板。
在本发明的显示基板及其制备方法和显示装置中，由于在所述显示基板上设有菲涅尔透镜层，且每个像素单元位于所述菲涅尔透镜层的至少一个菲涅尔透镜的焦平面上，因此能够实现每个像素单元发光的汇聚或发散。从而实现所述显示基板的高亮显示或可以将所述显示基板的光线分布得更均匀，使观察者在更大视 角范围内获得同样的视觉效果。
附图说明
图1为现有技术中等效为凸透镜的菲涅尔透镜的结构示意图。
图2为现有技术中等效为凹透镜的菲涅尔透镜的结构示意图。
图3为本发明实施例1和实施例2中的显示基板的结构示意图，在该显示基板中等效为凸透镜的菲涅尔透镜层设置在像素层上。
图4为本发明实施例1和实施例3中的显示基板的结构示意图，在该显示基板中等效为凸透镜的菲涅尔透镜层设置在封装基板上。
图5为本发明实施例1中的显示基板的结构示意图，在该显示基板中等效为凹透镜的菲涅尔透镜层设置在像素层上。
图6为本发明实施例1中具有简化结构的等效为凸透镜的菲涅尔透镜的结构示意图。
图7为本发明实施例1中具有简化结构的等效为凹透镜的菲涅尔透镜的结构示意图。
附图标记：
10.衬底基板；20.像素层；201.子像素；
301.等效为凸透镜的菲涅尔透镜；3011.第一椭圆弧线；3012.第一凸起；
302.等效为凹透镜的菲涅尔透镜；3021.第二椭圆弧线；3022.第二凸起；
303.等效为凸透镜的菲涅尔透镜；3031.第三椭圆弧线；3032.第三凸起；
304.等效为凹透镜的菲涅尔透镜；3041.第四椭圆弧线；3042.第四凸起；
40.封装基板；50.密封胶；60.保护层。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对本发明作进一步详细描述。
实施例1
如图3至图5所示，本实施例提供一种显示基板，该显示基板包括衬底基板10和设置在所述衬底基板10上的像素层20，所述像素层20包括呈矩阵分布的多个像素单元；
其中，所述显示基板还包括菲涅尔透镜层，所述菲涅尔透镜层包括多个菲涅尔透镜；每个所述像素单元位于至少一个所述菲涅尔透镜的焦平面上。
所述菲涅尔透镜层可以包括多个菲涅尔透镜，使得每个像素单元位于所述菲涅尔透镜层的至少一个菲涅尔透镜的焦平面上。
应当理解的是，所述菲涅尔透镜层是指菲涅尔透镜所在的层。例如，在图3和图4中，所述菲涅尔透镜层是指等效为凸透镜的菲涅尔透镜301所在的层；在图5中，所述菲涅尔透镜层是指等效为凹透镜的菲涅尔透镜302所在的层。
由于在显示基板上设有菲涅尔透镜层，且每个像素单元位于所述菲涅尔透镜层的至少一个菲涅尔透镜的焦平面上，因此能够实现每个像素单元发光的汇聚或发散。从而实现显示基板的高亮显示或可以将显示基板的光线分布得更均匀，使观察者在更大视角范围内获得同样的视觉效果。
应当理解的是，所述焦平面为等效为凸透镜的菲涅尔透镜301焦点所在的平面或等效为凹透镜的菲涅尔透镜302的虚焦点所在的平面。
可选地，每个所述像素单元包括多个子像素201，每个子像素201与一个菲涅尔透镜对应，每个所述子像素201位于对应的菲涅尔透镜的焦平面上。
应当理解的是，通常每个像素单元包括红、绿、蓝三个子像 素201。当然，每个像素单元也可以包括现有技术的其它类型的更多子像素201。由于每个子像素201位于对应的菲涅尔透镜的焦平面上，因此每个子像素201所发射的光在通过对应的菲涅尔透镜后都变成汇聚光线、平行光线或发散光线。
可选地，所述菲涅尔透镜等效于凹透镜或凸透镜。
这样，当菲涅尔透镜等效为凸透镜时，该菲涅尔透镜使每个子像素201的光线汇聚或平行，从而实现子像素201的高亮显示。当菲涅尔透镜等效为凹透镜时，该菲涅尔透镜使每个子像素201的光线发散，从而可以将每个子像素201的光线分布得更均匀，使观察者在更大视角范围内获得同样的视觉效果。
如图3所示，可选地，所述菲涅尔透镜层(即，等效为凸透镜的菲涅尔透镜301所在的层)设置于所述像素层20上，在所述菲涅尔透镜层上设有封装基板40。
具体地，菲涅尔透镜层位于封装基板40的内部。在此情况下，可以采用压模的方法直接在像素层20上制备菲涅尔透镜层。
另外，如图4所示，可选地，所述像素层20上设有封装基板40，所述菲涅尔透镜层(即，等效为凸透镜的菲涅尔透镜301所在的层)设置于所述封装基板40上。在此情况下，可以单独制备菲涅尔透镜层，然后，将菲涅尔透镜层贴附在封装基板40上。
如图4所示，可选地，所述显示基板还包括位于所述菲涅尔透镜层的远离封装基板40一侧的保护层60，形成所述保护层60的材料的折射率不小于形成每个菲涅尔透镜的材料(即，形成所述菲涅尔透镜层的材料)的折射率。
这样，由于菲涅尔透镜层位于封装基板40的外侧，保护层60能够起到保护菲涅尔透镜层的作用。同时，由于形成所述保护层60的材料的折射率不小于形成每个菲涅尔透镜的材料的折射率，可以防止光线从菲涅尔透镜层射入保护层60时在菲涅尔透镜层和保护层60之间的界面处发生全反射，从而使像素层20的光线从保护层60中折射出。
可选地，所述显示基板还包括用于将所述衬底基板10和所述 封装基板40进行密封的密封胶50；所述密封胶位于所述像素层20的周边。
这样，密封胶50将衬底基板10和封装基板40进行密封以形成显示基板。
如图3至图7所示，可选地，所述菲涅尔透镜层包括多个菲涅尔透镜，每个所述菲涅尔透镜包括：位于所述菲涅尔透镜层一侧的多个同心圆，所述多个同心圆包括位于中心的椭圆弧线和位于相邻两个同心圆之间的凸起；和位于所述菲涅尔透镜层的与所述一侧相对的另一侧的平面。
应当理解的是，上述由多个同心圆组成的菲涅尔透镜在等效于凸透镜时能使从所述平面侧入射的光线汇聚或平行，在等效于凹透镜时能使从所述平面侧入射的光线发散。
可选地，所述凸起包括呈锯齿状的弧线，所述锯齿状的弧线和所述椭圆弧线形成凹透镜或凸透镜的曲面。
应当理解的是，当菲涅尔透镜等效为凸透镜时椭圆弧线和锯齿状的弧线具有同一焦点，以实现像素单元所发出的光线的汇聚或平行；当菲涅尔透镜等效为凹透镜时椭圆弧线和锯齿状的弧线具有同一虚焦点，以实现像素单元所发出的光线的发散。
可选地，所述凸起为等腰三角形的两腰构成，且所述等腰三角形的两腰之间的顶角的角平分线与所述菲涅尔透镜层垂直。这里，所述角平分线与所述菲涅尔透镜层垂直是指所述角平分线与所述菲涅尔透镜层所在的平面垂直。
应当理解的是，在所述凸起为等腰三角形的两腰构成的情况下，可以通过调整等腰三角形的两腰之间的夹角的大小来调整所述凸起的焦距，使得所述凸起的焦距与中心椭圆弧线的焦距互相匹配(即，使得所述凸起和中心椭圆弧线具有同一焦点)。
如图6所示，等效为凸透镜的菲涅尔透镜303包括位于中心的第三椭圆弧线3031和位于相邻两个同心圆之间的第三凸起3032。
如图7所示，等效为凹透镜的菲涅尔透镜304包括位于中心 的第四椭圆弧线3041和位于相邻两个同心圆之间的第四凸起3042。
具有这样简化结构的菲涅尔透镜易于制作、制作成本低。
实施例2
对于菲涅尔透镜层设置于像素层20上的显示基板，如图3和图4所示，本实施例提供所述显示基板的一种制备方法，包括以下步骤S1至S4。
S1：在形成有像素层20的衬底基板10上涂覆透明树脂以形成透明树脂层，其中，透明树脂的折射率大于像素层20的折射率。
应当理解的是，像素层20的制备方法为现有技术，因此在此不详细描述。
S2：采用与菲涅尔透镜形状相对应的模具在所述透明树脂层上压膜制备菲涅尔透镜层。
例如，为了降低制作工艺的难度、节省制作成本，可以采用与图6或图7中的菲涅尔透镜303或304对应的模具对透明树脂层进行热压制备形成图6或图7所示的菲涅尔透镜303或304。
S3：在形成有菲涅尔透镜层的衬底基板10上涂覆密封胶50，其中，所述密封胶50位于所述像素层20的周边；密封胶50的选择和涂覆为现有技术，因此在此不详细描述。
S4：将涂覆有所述密封胶50的所述衬底基板10与封装基板40对盒。
可以使用对位工具来完成衬底基板10与封装基板40的对位，然后将它们对盒。
可选地，继续对对盒后的显示基板的密封胶50执行固化步骤等以最后制备出显示基板，在此不详细描述。
实施例3
如图4所示，对于菲涅尔透镜层设置于封装基板40上的显示基板，本实施例提供该显示基板的一种制备方法，包括以下步骤 S1’至S4’。
S1’:在形成有像素层20的衬底基板10上涂覆密封胶50，其中，所述密封胶50位于所述像素层20的周边。
应当理解的是，像素层20的制备方法为现有技术，因此在此不详细描述；密封胶50的选择和涂覆为现有技术，因此在此不详细描述。
S2’:将封装基板40与涂覆有所述密封胶50的所述衬底基板10对盒。
可以使用对位工具来完成衬底基板10与封装基板40的对位，然后将它们对盒。
S3’:制备菲涅尔透镜层的步骤；及在菲涅尔透镜层上制备保护层60的步骤。
具体地，可以采用聚烯烃材料注压而成薄片，该薄片表面一面为平面，与所述异面相对的另一面形成有由小到大的同心圆，并且相邻两个同心圆之间形成凸起。通过对菲涅尔透镜的厚度及同心圆直径及凸起的弧度进行控制，使菲涅尔透镜的焦点位于像素层20上，即位于像素层20所在的平面内。
然后，在菲涅尔透镜层上涂覆保护层60，形成所述保护层60的材料的折射率不小于形成每个菲涅尔透镜的材料(即，形成菲涅尔透镜层的材料)的折射率。这样可以使像素层20的光线从保护层60中折射出；同时可以保护菲涅尔透镜层。
S4’:在所述封装基板40上贴附菲涅尔透镜层。
具体地，将步骤S3’中单独制备的菲涅尔透镜层贴附于封装基板40上，使得像素层20中的每一个像素单元的每一个子像素201位于一个对应的菲涅尔透镜的焦平面上，以形成显示基板。
当然，根据需要，显示基板也可以包括其它功能层，在此不详细描述。
实施例4
本实施例提供一种显示装置，该显示装置包括上述的显示基 板。
该显示装置可以为：手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。该显示装置的实现可以参见上述实施例，在此不再赘述。
应当理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也属于本发明的保护范围。

Claims (14)

  1. 一种显示基板，包括衬底基板和设置在所述衬底基板上的像素层，所述像素层包括呈矩阵分布的多个像素单元；
    其中，所述显示基板还包括菲涅尔透镜层，所述菲涅尔透镜层包括多个菲涅尔透镜；每个所述像素单元位于至少一个所述菲涅尔透镜的焦平面上。
  2. 如权利要求1所述的显示基板，其中，每个所述像素单元包括多个子像素，每个子像素与一个菲涅尔透镜对应，每个所述子像素位于对应的菲涅尔透镜的焦平面上。
  3. 如权利要求1所述的显示基板，其中，每个所述菲涅尔透镜等效于凹透镜或凸透镜。
  4. 如权利要求1所述的显示基板，其中，所述菲涅尔透镜层设置于所述像素层上，并且在所述菲涅尔透镜层上设有封装基板。
  5. 如权利要求1所述的显示基板，其中，所述像素层上设有封装基板，并且所述菲涅尔透镜层设置于所述封装基板上。
  6. 如权利要求5所述的显示基板，其中，还包括位于所述菲涅尔透镜层的远离所述封装基板一侧的保护层，并且形成所述保护层的材料的折射率不小于形成每个所述菲涅尔透镜的材料的折射率。
  7. 如权利要求4-6中任一项所述的显示基板，还包括用于将所述衬底基板和所述封装基板进行密封的密封胶；其中，所述密封胶位于所述像素层的周边。
  8. 如权利要求1-7中任一项所述的显示基板，其中，所述菲涅尔透镜层包括多个菲涅尔透镜，每个所述菲涅尔透镜包括：位于所述菲涅尔透镜层一侧的多个同心圆，所述多个同心圆包括位于中心的椭圆弧线和位于相邻两个同心圆之间的凸起；和位于与所述一侧相对的另一侧的平面。
  9. 如权利要求8所述的显示基板，其中，所述凸起包括呈锯齿状的弧线，所述椭圆弧线和所述锯齿状的弧线形成凹透镜或凸透镜的曲面。
  10. 如权利要求8所述的显示基板，其中，所述凸起为等腰三角形的两腰构成，且所述等腰三角形的两腰之间的顶角的角平分线与所述菲涅尔透镜层垂直。
  11. 一种显示基板的制备方法，包括以下步骤：
    在形成有像素层的衬底基板上涂覆透明树脂以形成透明树脂层，其中，所述透明树脂的折射率大于所述像素层的折射率；
    采用与菲涅尔透镜形状相对应的模具在所述透明树脂层上压膜制备菲涅尔透镜层；
    在形成有所述菲涅尔透镜层的所述衬底基板上涂覆密封胶，其中，所述密封胶位于所述像素层的周边；以及
    将涂覆有所述密封胶的所述衬底基板与封装基板对盒。
  12. 一种显示基板的制备方法，包括以下步骤：
    在形成有像素层的衬底基板上涂覆密封胶，其中，所述密封胶位于所述像素层的周边；
    将封装基板与涂覆有所述密封胶的所述衬底基板对盒；以及
    在所述封装基板上贴附菲涅尔透镜层。
  13. 如权利要求12所述的制备方法，其中，
    在所述封装基板上贴附菲涅尔透镜层的步骤之前，所述制备方法还包括制备所述菲涅尔透镜层的步骤以及在所述菲涅尔透镜层上制备保护层的步骤。
  14. 一种显示装置，包括如权利要求1-10中任一项所述的显示基板。
PCT/CN2016/079264 2015-06-10 2016-04-14 显示基板及其制备方法和显示装置 Ceased WO2016197698A1 (zh)

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