WO2022198706A1 - 视角扩散膜片及显示面板 - Google Patents

视角扩散膜片及显示面板 Download PDF

Info

Publication number
WO2022198706A1
WO2022198706A1 PCT/CN2021/084590 CN2021084590W WO2022198706A1 WO 2022198706 A1 WO2022198706 A1 WO 2022198706A1 CN 2021084590 W CN2021084590 W CN 2021084590W WO 2022198706 A1 WO2022198706 A1 WO 2022198706A1
Authority
WO
WIPO (PCT)
Prior art keywords
protrusions
refraction
viewing angle
protrusion
display panel
Prior art date
Application number
PCT/CN2021/084590
Other languages
English (en)
French (fr)
Inventor
窦虎
吴梓平
俞刚
Original Assignee
Tcl华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tcl华星光电技术有限公司 filed Critical Tcl华星光电技术有限公司
Priority to US17/288,973 priority Critical patent/US20220357489A1/en
Publication of WO2022198706A1 publication Critical patent/WO2022198706A1/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0215—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having a regular structure
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • G02B5/0231—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having microprismatic or micropyramidal shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/0257—Diffusing elements; Afocal elements characterised by the diffusing properties creating an anisotropic diffusion characteristic, i.e. distributing output differently in two perpendicular axes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0273—Diffusing elements; Afocal elements characterized by the use
    • G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements

Definitions

  • the present invention relates to the field of display technology, and in particular, to a viewing angle diffusion film and a display panel.
  • the liquid crystal display panel has a development trend of high resolution.
  • the improvement of the resolution of the liquid crystal display panel will cause the reduction of the aperture ratio of the pixel electrode, thereby reducing the transmittance of light, thereby negatively affecting the display brightness of the liquid crystal display panel at a large viewing angle.
  • a viewing angle diffusion film is added on the liquid crystal display panel to achieve the purpose of improving the display brightness of the liquid crystal display panel at a large viewing angle.
  • the two-dimensional lattice wide viewing angle film can alleviate the moire phenomenon; the traditional two-dimensional lattice wide viewing angle film does not have a preferential direction of light diffusion, and its light diffusing ability in all directions is basically the same, and the light diffusion in unnecessary directions will cause Waste of energy and loss of brightness at front viewing angles.
  • the purpose of the present invention is to provide a viewing angle diffusing film, which can control the refraction direction of the viewing angle diffusing film by setting the space duty ratio of the adjacent refracting protrusions in the first direction and the second direction, thereby controlling the light diffusion.
  • the present invention provides a viewing angle diffusion film, comprising: a base; a plurality of refraction protrusions are provided on the base at intervals and are formed with a first interval along a first direction and a first interval along a second direction The second interval; wherein, the first interval is greater than the second interval.
  • the refraction protrusion has a first space duty ratio and a second space duty ratio;
  • the first space duty ratio is the length of the first lower base of the refraction protrusion along the first direction and the The ratio of the length of the first lower base to the sum of the first interval;
  • the second space duty ratio is the length of the second lower base of the refraction protrusion along the second direction and the second lower base The ratio of the base length to the sum of the second interval.
  • the first space duty ratio is 0.5-1.
  • the second space duty ratio is 0.1-0.8.
  • each refractive protrusion includes a circle or an ellipse, wherein the long axis of the elliptical refractive protrusion is parallel to the second direction, and the short axis of the elliptical refractive protrusion is parallel to the second direction. first direction.
  • the base and the refracting protrusion are integrally formed.
  • the plurality of refraction protrusions are arranged on the substrate in an array.
  • the viewing angle diffusing film further includes: a protective layer disposed on the base and the refracting protrusions.
  • the present invention also provides a display panel, comprising: a display screen body and the viewing angle diffusing film, wherein the viewing angle diffusing film is arranged on the light emitting side of the display screen body.
  • the invention provides a viewing angle diffusing film and a display panel.
  • the space duty ratio of the adjacent refracting protrusions in the first direction and the second direction the refraction direction of the viewing angle diffusing film can be controlled, thereby controlling the light diffusion.
  • the display panel of the present invention adjusts the space duty ratio of the refraction protrusions in different directions according to different usage scenarios, thereby improving the display brightness and reducing the color shift.
  • Embodiment 1 is a side view of a viewing angle diffusion film along a first direction provided by Embodiment 1 of the present invention
  • FIG. 2 is a side view of the viewing angle diffuser film provided in Embodiment 1 of the present invention along a second direction;
  • FIG. 3 is a schematic plan view of a circular pattern of a viewing angle diffusion film provided in Embodiment 1 of the present invention.
  • FIG. 4 is a schematic plan view of an oval pattern of a viewing angle diffusion film provided in Embodiment 1 of the present invention.
  • FIG. 5 is a side view of the viewing angle diffuser film provided in the embodiment of FIG. 4 along a second direction;
  • FIG. 6 is a schematic structural diagram of the viewing angle diffusion film provided in Embodiment 1 of the present invention.
  • FIG. 7 is a schematic plan view of a circular pattern of a viewing angle diffusion film provided in Embodiment 2 of the present invention.
  • FIG. 8 is a schematic plan view of an oval pattern of a viewing angle diffusion film provided in Embodiment 2 of the present invention.
  • FIG. 9 is a schematic structural diagram of a display panel according to Embodiment 3 of the present invention.
  • polarizing film layer 14 display screen body 20; backlight module 30;
  • the second lower base length c; the second interval d The second lower base length c; the second interval d.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature. In the description of this application, unless stated otherwise, “plurality” means two or more. Additionally, the term “comprising” and any variations thereof are intended to cover non-exclusive inclusion.
  • Embodiment 1 of the present invention provides a viewing angle diffusion film 10 , which includes a base 11 and a plurality of refraction protrusions 12 .
  • the refraction protrusions 12 are arranged on the base 11 at intervals and are formed with a first interval b along the first direction (as shown in FIG. 1 ) and a second interval d along the second direction (as shown in FIG. 2 ) shown). Wherein, the first direction is perpendicular to the second direction, and the first interval is greater than the second interval.
  • the first direction is the lateral direction, that is, the X direction; the second direction is the longitudinal direction, that is, the Y direction.
  • the first direction may be the longitudinal direction, and the second direction may be the transverse direction. Therefore, the first direction and the second direction can be selectively set as vertical or horizontal according to the light refraction direction and light output effect required by the actual use.
  • the refraction protrusions 12 have a first space duty ratio and a second space duty ratio. Wherein the first space duty cycle is greater than the second space duty cycle.
  • the first space duty ratio is the ratio of the first lower base length a of the refractive protrusion along the first direction to the sum of the first lower base length a and the first interval b, and the calculation formula is is: a/(a+b); in this embodiment, the first space duty ratio is 0.5-1; as shown in FIG. 1 , along the first direction, the light 111 can be diffused.
  • the second space duty ratio is the ratio of the second lower base length c of the refraction protrusion along the second direction to the sum of the second lower base length c and the second interval d, and the calculation formula is is: c/(c+d); in this embodiment, the second space duty ratio is 0.1-0.8.
  • the light 112 can emit light normally but with weak diffusion.
  • the plurality of refracting protrusions 12 are arranged on the base 11 in an array, and the planar pattern of each refracting protrusion 12 includes a circle (as shown in FIG. 3 ) or an ellipse (as shown in FIG. 4 ) shown, the short axis of the ellipse is equal to the length of the diameter of the circle), wherein the long axis of the elliptical refractive protrusion is parallel to the second direction, and the short axis of the elliptical refractive protrusion is parallel to the first direction .
  • the first space duty ratio of the lateral refractive protrusions 12 is greater than the second space duty ratio of the longitudinal refractive protrusions 12 , the first space duty ratio of the lateral refractive protrusions 12 is 0.5 ⁇ 1 (the calculation formula is: : a/(a+b)), the second space duty ratio of the longitudinal refraction protrusion 12 is 0.1 ⁇ 0.8 (the calculation formula is: c/(c+d)); in this embodiment, the first space occupies The duty ratio of the second space is 0.8, and the duty ratio of the second space is 0.5, as shown in Figure 1.
  • the light emitted by the refraction protrusions in the first direction will not be crosstalked by the adjacent refraction protrusions, and will not affect the light diffusion.
  • the light emitted from the refracting protrusions is affected by the adjacent refracting protrusions, reducing the effect of light diffusion.
  • the first space duty ratio of the lateral refractive protrusions 12 is smaller than the second space duty ratio of the longitudinal refractive protrusions 12, the first space duty ratio of the longitudinal refractive protrusions 12 is 0.5-1, and the lateral refractive protrusions 12 have a first space duty ratio of 0.5 to 1.
  • the duty ratio of the second space starting from 12 is 0.1 ⁇ 0.8.
  • a is equal to c, and b>d
  • a is not equal to c, and b>d.
  • Several groups of refracting protrusions are formed along the second direction, wherein the number of refracting protrusions in the adjacent groups of refracting protrusions is the same; as shown in FIG. 5 , it is the side of the pattern in FIG. 4 in the second direction
  • the side view of the embodiment in FIG. 4 in the first direction is the same as that in FIG.
  • the side view in the second direction is not the same as that in FIG. 2, and the difference is
  • the length c of the lower base of the protrusion is lengthened, so that the small-spaced arrangement of the refracting protrusions in the second direction can be realized, and then in the second direction, the light emitted from the refracting protrusions is affected by the adjacent refracting protrusions, reducing the The effect of light diffusion.
  • the refraction protrusions 12 are used to change the propagation direction of the light entering the viewing angle diffusing film 10, and use the refraction of light to shift part of the light away from the center of the viewing angle diffusing film 10, Thereby enhancing the large viewing angle brightness.
  • the width of the top surface 123 of the refractive protrusion 12 may be 3 to 10 microns
  • the width of the bottom surface of the refractive protrusion 12 may be 12 to 20 microns
  • the height of the refractive protrusion 12 may be 12 to 20 microns.
  • the width of the top surface 123 of the refractive protrusion 12 may be 6 micrometers
  • the width of the bottom surface of the refractive protrusion 12 may be 18 micrometers
  • the height of the refractive protrusion 12 may be 21 micrometers.
  • the viewing angle diffusion film 10 further includes a protective layer 13 , and the protective layer 13 is provided on the refraction protrusions 12 and the substrate 11 .
  • the protective layer 13 is made of transparent material for protecting the refractive protrusions 12 .
  • the viewing angle diffusion film 10 further includes a polarizing film layer 14, and the polarizing film layer 14 is disposed on the side of the substrate 11 away from the refractive protrusion 12. It should be noted that the refraction protrusions 12 are combined with the polarizing film layer 14, so that the viewing angle diffusing film 10 can serve as a large viewing angle polarizer, so that the viewing angle diffusing film 10 can replace the polarizer on the existing display panel.
  • the base 11 and the refracting protrusions 12 are integrally formed, so as to reduce the production process and reduce the cost.
  • the cross-sectional pattern of the refraction protrusion 12 includes a trapezoid. In other embodiments, the cross-sectional pattern of the refraction protrusion 12 may also be a convex lens shape, a Euclidean lens shape, an hourglass shape, or a water drop shape.
  • Embodiment 1 provides a viewing angle diffusing film 10.
  • the space duty ratio of the adjacent refracting protrusions 12 in the first direction and the second direction the refraction direction of the viewing angle diffusing film 10 can be controlled, and further light diffusion can be controlled. happening.
  • Embodiment 2 of the present invention provides a viewing angle diffusion film, which is different from Embodiment 1 in that the distribution of the plurality of refraction protrusions 12 a is different.
  • the number of the refractive protrusions 12a in the vertical direction is different, so that the planar patterns of the plurality of refractive protrusions 12a are different.
  • the planar pattern of each refractive protrusion 12a includes a circle (as shown in FIG. 7 ) or an ellipse (as shown in FIG. 8 ).
  • Several groups of refraction protrusions are formed along the second direction, wherein the number of refraction protrusions of adjacent groups of refraction protrusions is different.
  • the side view along the first direction is the same as that of FIG. 1
  • the side view along the second direction is the same as that of the embodiment of FIG. 2 .
  • its side view along the first direction is the same as that of FIG. 1
  • its side view along the second direction is the same as that of the embodiment of FIG. 5
  • Embodiment 3 of the present invention provides a display panel, comprising: a display screen body 20 and the viewing angle diffusing film 10 , and the viewing angle diffusing film 10 is disposed on the light-emitting side of the display screen body 20 .
  • the display panel further includes a backlight module 30 disposed on a side of the display screen body 20 away from the viewing angle diffusion film 10 .
  • the viewing angle diffusing film 10 when the viewing angle diffusing film 10 is attached to the display screen body 20 in the present invention, the viewing angle diffusing film 10 has a light scattering effect. At this time, there is no need to add a scattering film to the backlight module 30 to reduce production. cost.
  • the viewing angle diffusion film 10 When the light beam emitted by the light source of the display panel enters the refracting protrusion 12, the propagation directions of the outgoing light after the parallel light rays are refracted by different parts on the curved surface are different, so that the viewing angle diffusion film 10 can be used for a beam of incident light. There are multiple modulation angles, which enhances the modulation capability of the viewing angle diffusion film 10. When dealing with a display panel with a concentrated light shape from the light source, the light shape of the emitted light modulated by the viewing angle diffusion film 10 is more dispersed, thereby improving a large viewing angle. Displays the image quality effect of the screen.
  • the first space duty ratio of the refraction protrusions 12 in the horizontal direction is greater than the second space duty ratio of the refraction protrusions 12 in the vertical direction, and the refraction protrusions 12 in the horizontal direction
  • the first space duty ratio of 12 is 0.5-1
  • the second space duty ratio of the refraction protrusions 12 in the vertical direction is 0.1-0.8.
  • the first space duty ratio of the refraction protrusions 12 in the horizontal direction is smaller than the second space duty ratio of the refraction protrusions 12 in the vertical direction, and the refraction protrusions 12 in the vertical direction
  • the first space duty ratio of the protrusions 12 is 0.5 ⁇ 1
  • the second space duty ratio of the refractive protrusions 12 in the horizontal direction is 0.1 ⁇ 0.8.
  • the present invention provides a viewing angle diffusing film and a display panel.
  • the space duty ratio of the adjacent refracting protrusions in the first direction and the second direction, the refraction direction of the viewing angle diffusing film can be controlled. , which can control the light diffusion.
  • the display panel of the present invention adjusts the space duty ratio of the refraction protrusions in different directions according to different usage scenarios, thereby improving the display brightness and reducing the color shift.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

一种视角扩散膜片(10)及显示面板，包括：基底(11)以及若干折射凸起(12)。通过控制第一方向与第二方向相邻折射凸起(12)的空间占空比，可以控制视角扩散膜片(10)的折射方向，进而可以控制光扩散情况。显示面板根据不同使用场景下，调整不同方向的折射凸起(12)的空间占空比，进而可以提高显示亮度以及降低色偏。

Description

视角扩散膜片及显示面板 技术领域
本发明涉及显示技术领域，尤其涉及一种视角扩散膜片及显示面板。
 背景技术
随着显示技术的迅猛发展，液晶显示面板具有高分辨率的发展趋势。液晶显示面板分辨率的提高会造成像素电极开口率的降低,从而降低光的穿透率，进而对液晶显示面板的大视角显示亮度造成负面影响。
 技术问题
在现有技术中，通过采用在液晶显示面板上增设视角扩散膜的方式，以达到提高液晶显示面板的大视角显示亮度的目的。二维点阵式广视角膜可缓解莫尔纹现象；传统二维点阵式广视角膜不存在光扩散优先方向，其在各个方向的光扩散能力基本相同，非必要方向的光扩散会导致能量浪费和正视角亮度损失。
因此，迫切需要开发一种新型的视角扩散膜，以保留现有视角扩散膜的积极效果，而消除现有视角扩散膜的消极效果。
 技术解决方案
本发明目的在于提供一种视角扩散膜片，通过设置第一方向与第二方向相邻折射凸起的空间占空比，可以控制视角扩散膜片的折射方向，进而可以控制光扩散情况。
为了达到上述目的，本发明提供一种视角扩散膜片，包括：基底；若干折射凸起，间隔地设于所述基底上且形成有沿第一方向上的第一间隔和沿第二方向上的第二间隔；其中，所述第一间隔大于所述第二间隔。
进一步地，所述折射凸起具有第一空间占空比和第二空间占空比；所述第一空间占空比为所述折射凸起沿着第一方向上的第一下底长度与所述第一下底长度和所述第一间隔之和的比值；所述第二空间占空比为所述折射凸起沿着第二方向上的第二下底长度与所述第二下底长度和所述第二间隔之和的比值。
进一步地，所述第一空间占空比为0.5~1。
进一步地，所述第二空间占空比为0.1~0.8。
进一步地，每一折射凸起的平面图案包括圆形或椭圆形，其中，椭圆形的折射凸起的长轴平行所述第二方向，所述椭圆形的折射凸起的短轴平行所述第一方向。
进一步地，所述基底与所述折射凸起一体成型。
进一步地，在沿所述第二方向上形成若干组折射凸起，其中，相邻的所述组折射凸起的折射凸起的数量不相同。
进一步地，所述若干折射凸起阵列式设于所述基底上。
进一步地，所述的视角扩散膜片还包括：保护层，设于所述基底以及所述折射凸起上。
本发明还提供一种显示面板，包括：显示屏体以及所述视角扩散膜片，所述视角扩散膜片设于所述显示屏体的出光侧。
 有益效果
本发明提供了一种视角扩散膜片及显示面板，通过设置第一方向与第二方向相邻折射凸起的空间占空比，可以控制视角扩散膜片的折射方向，进而可以控制光扩散情况。本发明的显示面板根据不同使用场景下，调整不同方向的折射凸起的空间占空比，进而可以提高显示亮度以及降低色偏。
 附图说明
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为本发明实施例1提供的视角扩散膜片沿第一方向的侧视图；
图2为本发明实施例1提供的视角扩散膜片沿第二方向的侧视图；
图3为本发明实施例1提供的视角扩散膜片圆形图案的平面示意图；
图4为本发明实施例1提供的视角扩散膜片椭圆形图案的平面示意图；
图5为图4实施例提供的视角扩散膜片沿第二方向的侧视图；
图6为本发明实施例1提供的视角扩散膜片的结构示意图；
图7为本发明实施例2提供的视角扩散膜片圆形图案的平面示意图；
图8为本发明实施例2提供的视角扩散膜片椭圆形图案的平面示意图；
图9为本发明实施例3提供的显示面板的结构示意图。
视角扩散膜片10；
基底11；折射凸起12；保护层13；
偏振膜层14；显示屏体20；背光模块30；
第一下底长度a；第一间隔b；
第二下底长度c；第二间隔d。
 本发明的实施方式
这里所公开的具体结构和功能细节仅仅是代表性的，并且是用于描述本申请的示例性实施例的目的。但是本申请可以通过许多替换形式来具体实现，并且不应当被解释成仅仅受限于这里所阐述的实施例。
在本申请的描述中，需要理解的是，术语“中心”、“横向”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。另外，术语“包括”及其任何变形，意图在于覆盖不排他的包含。
实施例1
如图1及图2所示，本发明实施例1提供一种视角扩散膜片10，包括：基底11以及若干折射凸起12。
所述折射凸起12间隔地设于所述基底11上且形成有沿第一方向上的第一间隔b（如图1所示）和沿第二方向上的第二间隔d（如图2所示）。其中，所述第一方向垂直于所述第二方向，所述第一间隔大于所述第二间隔。
在实施例1中，如图1、图2所示，所述第一方向为横向，即X方向；所述第二方向为纵向，即Y方向。当然，在其他实施例中，所述第一方向可以为纵向，而所述第二方向则为横向。因此，可以根据实际使用情况所要求达到的光线折射方向和出光效果，从而将第一方向和第二方向选择性设置为纵向或横向。
所述折射凸起12具有第一空间占空比和第二空间占空比。其中所述第一空间占空比大于所述第二空间占空比。
所述第一空间占空比为所述折射凸起沿着第一方向上的第一下底长度a与所述第一下底长度a和所述第一间隔b之和的比值，计算公式为：a/（a+b）；在本实施例中，所述第一空间占空比为0.5~1；如图1所示，在沿着第一方向上，光线111能够扩散。
所述第二空间占空比为所述折射凸起沿着第二方向上的第二下底长度c与所述第二下底长度c和所述第二间隔d之和的比值，计算公式为：c/（c+d）；在本实施例中，所述第二空间占空比为0.1~0.8。如图2所示，光线112能够正常出光但扩散较弱。
在实施例1中，所述若干折射凸起12阵列式设于所述基底11上，每一折射凸起12的平面图案包括圆形（如图3所示）或椭圆形（如图4所示，椭圆形的短轴等于圆形的直径长度），其中，椭圆形的折射凸起的长轴平行所述第二方向，所述椭圆形的折射凸起的短轴平行所述第一方向。若横向的折射凸起12的第一空间占空比大于纵向折射凸起12的第二空间占空比，则横向的折射凸起12的第一空间占空比为0.5~1（计算公式为：a/（a+b）），纵向折射凸起12的第二空间占空比为0.1~0.8（计算公式为：c/（c+d））；在本实施例中，第一空间占空比为0.8，第二空间占空比为0.5，如图1所示，因此在第一方向上的折射凸起的射出的光线不会被相邻折射凸起串扰，不会影响光扩散的效果，而如图2所示，第二方向上，从折射凸起射出的光线被相邻折射凸起影响，降低光扩散的效果。若横向的折射凸起12的第一空间占空比小于纵向折射凸起12的第二空间占空比，则纵向的折射凸起12的第一空间占空比为0.5~1，横向折射凸起12的第二空间占空比为0.1~0.8。在图3实施例中，a等于c，且b>d，在图4实施例中a不等于c，且b>d。在沿所述第二方向上形成若干组折射凸起，其中，相邻的所述组折射凸起的折射凸起的数量相同；如图5所示，为图4图案在第二方向的侧视图，图4实施例在第一方向的侧视图与图1相同（即椭圆形图案的短轴长度等于圆形图案的直径）；在第二方向的侧视图与图2并不相同，其区别在于凸起的下底的长度c加长，进而可以实现在第二方向折射凸起的小间距排布，进而在第二方向上，从折射凸起射出的光线被相邻折射凸起影响，降低光扩散的效果。
在实施例1中，所述折射凸起12用于改变射入视角扩散膜片10的光线的传播方向，并利用光的折射将部分光线向远离视角扩散膜片10的中心的方向偏移，从而增强大视角亮度。
在实施例1中，所述折射凸起12的顶面123的宽度可以为3〜10微米,所述折射凸起12的底面的宽度可以为12〜20微米，所述折射凸起12的高度可以为15〜25微米。所述折射凸起12的顶面123的宽度可以为6微米，所述折射凸起12的底面的宽度可以为18微米，所述折射凸起12的高度可以为21微米。
在实施例1中，如图6所示，所述视角扩散膜片10还包括保护层13，所述保护层13设于所述折射凸起12以及所述基底11上。所述保护层13由透明材料制成，用于保护所述折射凸起12。
在实施例1中，所述视角扩散膜片10还包括偏振膜层14,所述偏振膜层14设置于所述基底11远离所述折射凸起12的一侧。需要说明的是，将折射凸起12与偏振膜层14结合，使得视角扩散膜片10可以充当大视角偏光片，从而使得视角扩散膜片10可以取代现有显示面板上的偏光片。
在实施例1中，所述基底11与所述折射凸起12一体成型，以减少生产工序，降低成本。所述折射凸起12的截面图形包括梯形，在其它实施例中，所述折射凸起12的截面图形还可以呈凸透镜状、欧透镜状、沙漏状或水滴状等。
实施例1提供了一种视角扩散膜片10，通过设置第一方向与第二方向相邻折射凸起12的空间占空比，可以控制视角扩散膜片10的折射方向，进而可以控制光扩散情况。
实施例2
如图7以及图8所示，本发明实施例2提供了一种视角扩散膜片，与实施例1不同之处在于，所述若干折射凸起12a的分布不同。
具体地，在竖直方向的折射凸起12a的数量不同，从而导致所述若干折射凸起12a的平面图案不同。每一折射凸起12a的平面图案包括圆形（如图7所示）或椭圆形（如图8所示）。在沿所述第二方向上形成若干组折射凸起，其中，相邻的所述组折射凸起的折射凸起的数量不相同。在图7实施例中，其沿第一方向的侧视图与图1相同，其沿第二方向的侧视图与图2实施例相同。在图8实施例中，其沿第一方向的侧视图与图1相同，其沿第二方向的侧视图与图5实施例相同
实施例3
如图9所示，本发明实施例3提供一种显示面板，包括：显示屏体20以及所述视角扩散膜片10，所述视角扩散膜片10设于所述显示屏体20的出光侧。
在实施例3中，所述显示面板还包括设置于所述显示屏体20远离所述视角扩散膜片10的一侧的背光模块30。
需要说明的是，本发明将视角扩散膜片10贴附于显示屏体20上时，视角扩散膜片10具有光线散射作用，此时可无需在背光模块30中增添散射膜片，以降低生产成本。
所述显示面板的光源发出的光束射入折射凸起12中时，平行的光线经过曲面上的不同部位折射后的出射光的传播方向不相同，从而使得视角扩散膜片10对于一束入射光存在多个调制角度，增强视角扩散膜片10的调制能力，在应对光源发出的光形较为集中的显示面板时，视角扩散膜片10调制后的出射光的光形更加分散，从而提高大视角显示画面的画质效果。当所述显示面板优先扩散水平方向时，水平方向的折射凸起12的第一空间占空比大于竖直方向的折射凸起12的第二空间占空比，所述水平方向的折射凸起12的第一空间占空比为0.5~1，所述竖直方向的折射凸起12的第二空间占空比为0.1~0.8。当所述显示面板优先扩散竖直方向时，水平方向的折射凸起12的第一空间占空比小于竖直方向的折射凸起12的第二空间占空比，所述竖直方向的折射凸起12的第一空间占空比为0.5~1，所述水平方向的折射凸起12的第二空间占空比为0.1~0.8。
本发明的有益效果为：本发明提供了一种视角扩散膜片及显示面板，通过设置第一方向与第二方向相邻折射凸起的空间占空比，可以控制视角扩散膜片的折射方向，进而可以控制光扩散情况。本发明的显示面板根据不同使用场景下，调整不同方向的折射凸起的空间占空比，进而可以提高显示亮度以及降低色偏。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种视角扩散膜片，其中，包括：
    基底；
    若干折射凸起，间隔地设于所述基底上且形成有沿第一方向上的第一间隔和沿第二方向上的第二间隔；
    其中，所述第一间隔大于所述第二间隔。
  2. 如权利要求1所述的视角扩散膜片，其中，
    所述折射凸起具有第一空间占空比和第二空间占空比；
    所述第一空间占空比为所述折射凸起沿着第一方向上的第一下底长度与所述第一下底长度和所述第一间隔之和的比值；
    所述第二空间占空比为所述折射凸起沿着第二方向上的第二下底长度与所述第二下底长度和所述第二间隔之和的比值；
    其中所述第一空间占空比大于所述第二空间占空比。
  3. 如权利要求2所述的视角扩散膜片，其中，所述第一空间占空比为0.5~1。
  4. 如权利要求2所述的视角扩散膜片，其中，所述第二空间占空比为0.1~0.8。
  5. 如权利要求1所述的视角扩散膜片，其中，
    每一折射凸起的平面图案包括圆形或椭圆形；
    其中，椭圆形的折射凸起的长轴平行所述第二方向，所述椭圆形的折射凸起的短轴平行所述第一方向。
  6. 如权利要求1所述的视角扩散膜片，其中，
    所述基底与所述折射凸起一体成型。
  7. 如权利要求1所述的视角扩散膜片，其中，
    所述折射凸起阵列式设于所述基底上。
  8. 如权利要求7所述的视角扩散膜片，其中，
    在沿所述第二方向上形成若干组折射凸起，其中，相邻的所述组折射凸起的折射凸起的数量不相同。
  9. 如权利要求1所述的视角扩散膜片，其中，还包括：
    保护层，设于所述基底以及所述折射凸起上。
  10. 一种显示面板，其中，包括：显示屏体以及视角扩散膜片，所述视角扩散膜片设于所述显示屏体的出光侧；
    所述视角扩散膜片包括：
    基底；
    若干折射凸起，间隔地设于所述基底上且形成有沿第一方向上的第一间隔和沿第二方向上的第二间隔；
    其中，所述第一间隔大于所述第二间隔。
  11. 如权利要求10所述的显示面板，其中，
    所述折射凸起具有第一空间占空比和第二空间占空比；
    所述第一空间占空比为所述折射凸起沿着第一方向上的第一下底长度与所述第一下底长度和所述第一间隔之和的比值；
    所述第二空间占空比为所述折射凸起沿着第二方向上的第二下底长度与所述第二下底长度和所述第二间隔之和的比值；
    其中所述第一空间占空比大于所述第二空间占空比。
  12. 如权利要求11所述的显示面板，其中，所述第一空间占空比为0.5~1。
  13. 如权利要求11所述的显示面板，其中，所述第二空间占空比为0.1~0.8。
  14. 如权利要求10所述的显示面板，其中，
    每一折射凸起的平面图案包括圆形或椭圆形；
    其中，椭圆形的折射凸起的长轴平行所述第二方向，所述椭圆形的折射凸起的短轴平行所述第一方向。
  15. 如权利要求10所述的显示面板，其中，
    所述基底与所述折射凸起一体成型。
  16. 如权利要求10所述的显示面板，其中，
    所述折射凸起阵列式设于所述基底上。
  17. 如权利要求16所述的显示面板，其中，
    在沿所述第二方向上形成若干组折射凸起，其中，相邻的所述组折射凸起的折射凸起的数量不相同。
  18. 如权利要求10所述的显示面板，其中，还包括：
    保护层，设于所述基底以及所述折射凸起上。
PCT/CN2021/084590 2021-03-25 2021-03-31 视角扩散膜片及显示面板 WO2022198706A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/288,973 US20220357489A1 (en) 2021-03-25 2021-03-31 Viewing angle diffuser film and display panel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110320939.6 2021-03-25
CN202110320939.6A CN113075814A (zh) 2021-03-25 2021-03-25 视角扩散膜片及显示面板

Publications (1)

Publication Number Publication Date
WO2022198706A1 true WO2022198706A1 (zh) 2022-09-29

Family

ID=76610322

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/084590 WO2022198706A1 (zh) 2021-03-25 2021-03-31 视角扩散膜片及显示面板

Country Status (3)

Country Link
US (1) US20220357489A1 (zh)
CN (1) CN113075814A (zh)
WO (1) WO2022198706A1 (zh)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140078582A1 (en) * 2012-09-19 2014-03-20 Samsung Display Co., Ltd. Optical unit and organic light emitting diode display including the same
CN104865740A (zh) * 2015-06-23 2015-08-26 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN104991370A (zh) * 2015-06-10 2015-10-21 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN105068298A (zh) * 2015-06-23 2015-11-18 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN107329325A (zh) * 2017-08-31 2017-11-07 京东方科技集团股份有限公司 匀光结构、前置光源及显示装置
CN110352319A (zh) * 2016-11-18 2019-10-18 康宁股份有限公司 微结构化导光板和包含其的装置
CN112147726A (zh) * 2019-06-28 2020-12-29 宁波激智科技股份有限公司 一种新型四棱台增亮膜及其应用，及一种可融合结构化胶带

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4830188B2 (ja) * 2000-08-31 2011-12-07 凸版印刷株式会社 光拡散体およびそれを用いた表示装置
KR20100032767A (ko) * 2008-09-18 2010-03-26 제일모직주식회사 마이크로렌즈 패턴과 엠보 패턴을 구비하는 확산필름 및 그제조방법
CN101865419A (zh) * 2009-04-20 2010-10-20 颖台科技股份有限公司 微结构扩散板
CN202512257U (zh) * 2011-03-03 2012-10-31 夏普株式会社 光扩散部件和其显示装置
JP2014142368A (ja) * 2011-05-13 2014-08-07 Sharp Corp 光拡散部材およびその製造方法、表示装置
KR102099781B1 (ko) * 2013-10-15 2020-04-10 삼성전자주식회사 색 변화 저감용 광학 필름 및 이를 채용한 유기 발광 표시 장치
CN205015497U (zh) * 2015-10-19 2016-02-03 东莞轩朗实业有限公司 防眩光扩散板
KR102519932B1 (ko) * 2017-10-19 2023-04-11 삼성전자주식회사 디스플레이 장치
TWI728252B (zh) * 2018-01-08 2021-05-21 友達光電股份有限公司 光學膜及具有光學膜的顯示裝置
CN208721822U (zh) * 2018-09-30 2019-04-09 惠科股份有限公司 偏光板、显示面板及显示装置
CN109188772A (zh) * 2018-10-30 2019-01-11 厦门天马微电子有限公司 一种背光模组和显示装置
CN109613640A (zh) * 2019-01-30 2019-04-12 惠科股份有限公司 光学膜层和显示装置
CN110824770A (zh) * 2019-11-07 2020-02-21 宁波视睿迪光电有限公司 一种背光模块

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140078582A1 (en) * 2012-09-19 2014-03-20 Samsung Display Co., Ltd. Optical unit and organic light emitting diode display including the same
CN104991370A (zh) * 2015-06-10 2015-10-21 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN104865740A (zh) * 2015-06-23 2015-08-26 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN105068298A (zh) * 2015-06-23 2015-11-18 深圳市华星光电技术有限公司 视角扩大膜及包括其的广视角薄膜晶体管液晶显示装置
CN110352319A (zh) * 2016-11-18 2019-10-18 康宁股份有限公司 微结构化导光板和包含其的装置
CN107329325A (zh) * 2017-08-31 2017-11-07 京东方科技集团股份有限公司 匀光结构、前置光源及显示装置
CN112147726A (zh) * 2019-06-28 2020-12-29 宁波激智科技股份有限公司 一种新型四棱台增亮膜及其应用，及一种可融合结构化胶带

Also Published As

Publication number Publication date
CN113075814A (zh) 2021-07-06
US20220357489A1 (en) 2022-11-10

Similar Documents

Publication Publication Date Title
TWI657291B (zh) 背光模組
US11300828B2 (en) Display device
WO2018153069A1 (zh) 光学膜材和彩膜基板及其制作方法、显示装置
US20110019128A1 (en) Optical member, lighting device, display device, television receiver and manufacturing method of optical member
JP2007264393A (ja) 液晶表示装置
TW201617700A (zh) 直視型顯示裝置及用於直視型顯示裝置的發光單元
US20110205734A1 (en) Optical sheet stack body, illuminating device, and display device
US20090296021A1 (en) Optical sheet, backlight unit, and liquid crystal display
KR102266737B1 (ko) 렌즈, 렌즈를 포함하는 발광 장치, 및 발광 장치를 포함하는 백 라이트 유닛
US20100165243A1 (en) Prism sheet, back light unit and liquid crystal display device having the same
WO2020147213A1 (zh) 支撑结构、背光单元和显示面板
TW201339670A (zh) 照明裝置及顯示裝置
US20220113591A1 (en) Diffusion plate and backlight module
WO2022000532A1 (zh) 一种视角扩散膜片及显示面板
KR102130517B1 (ko) 백라이트 유닛 및 이를 포함한 액정표시장치
WO2022000689A1 (zh) 视角扩散膜片及显示面板
WO2023231505A1 (zh) 背光模组及显示装置
TW201405217A (zh) 背光模組
TWI400483B (zh) 增光片及背光模組
KR101415683B1 (ko) 액정표시장치
WO2022213424A1 (zh) 视角扩散膜片及显示面板
JP2010108601A (ja) 面状光源及び液晶表示装置
US20160252667A1 (en) Backlight unit and display device
WO2022198706A1 (zh) 视角扩散膜片及显示面板
KR20150063835A (ko) 광학시트 및 이를 포함하는 액정표시장치모듈

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21932324

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21932324

Country of ref document: EP

Kind code of ref document: A1