WO2021128507A1 - 一种背板结构以及显示装置 - Google Patents

一种背板结构以及显示装置 Download PDF

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Publication number
WO2021128507A1
WO2021128507A1 PCT/CN2020/071641 CN2020071641W WO2021128507A1 WO 2021128507 A1 WO2021128507 A1 WO 2021128507A1 CN 2020071641 W CN2020071641 W CN 2020071641W WO 2021128507 A1 WO2021128507 A1 WO 2021128507A1
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Prior art keywords
micro light
backplane structure
display device
backplane
emitting device
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PCT/CN2020/071641
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English (en)
French (fr)
Inventor
罗聪
丘永元
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惠州市华星光电技术有限公司
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Publication of WO2021128507A1 publication Critical patent/WO2021128507A1/zh

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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/48Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
    • H01L33/58Optical field-shaping elements
    • H01L33/60Reflective elements

Definitions

  • the present invention relates to the field of display technology, in particular to a backplane structure and a display device.
  • the micro light emitting device Due to the small size of the micro light emitting device, it is widely used in the backplane structure of the display panel to reduce the thickness of the backplane structure.
  • a large number of micro light-emitting devices are used in the existing backplane structure.
  • the reflective sheet cannot be provided, which causes light to be emitted from the side of the micro light-emitting device, thereby reducing the utilization rate of light and increasing the power. Consumption.
  • the object of the present invention is to provide a backplane structure and a display device, which can improve the utilization rate of light and reduce power consumption.
  • the present invention provides a backplane structure, including:
  • a plurality of micro light-emitting devices are arranged on the back plate; two adjacent micro light-emitting devices are arranged at intervals;
  • a plurality of reflecting parts, the reflecting parts are arranged on the back plate not covered by the micro light emitting device.
  • the present invention also provides a display device, which includes the above-mentioned backplane structure.
  • the backplane structure and the display device of the present invention include a backplane; a plurality of micro light-emitting devices arranged on the backplane; two adjacent micro light-emitting devices are arranged at intervals; a plurality of reflective parts, the reflection The part is arranged on the back plate that is not covered by the micro light-emitting device; due to the addition of the reflective part, when light is emitted from the side of the micro light-emitting device, it is reflected by the reflective part and is reflected back to the middle area of the back plate structure , To prevent light from being emitted from the side of the backplane structure, reduce light loss, improve light utilization, and reduce power consumption.
  • Figure 1 is a schematic structural diagram of an existing backplane structure
  • FIG. 2 is a schematic diagram of the structure of the back plate structure according to the first embodiment of the present invention.
  • Figure 3 is a top view of the backplane structure in Figure 2;
  • FIG. 4 is a schematic diagram of the structure of the backplane structure of the second embodiment of the present invention.
  • Fig. 5 is a schematic structural diagram of a backplane structure according to the third embodiment of the present invention.
  • the existing backplane structure includes a backplane 10 and a plurality of micro light-emitting devices 20 arranged on the backplane 10, and a white paint 21 is provided on the backplane 10 that is not covered by the micro light-emitting devices.
  • the reflectance of the white paint 21 is low ( ⁇ 90%), and the color difference after filtering is large, which results in poor display effect.
  • FIG. 2 is a schematic structural diagram of a backplane structure according to the first embodiment of the present invention.
  • the backplane structure 100 of this embodiment includes: a backplane 10, a plurality of micro light emitting devices 20 and a plurality of reflective parts 30.
  • the backplane 10 may be a circuit board, and the backplane 10 is used to drive the micro light emitting device 20 to emit light.
  • the micro light emitting device 20 is arranged on the back plate 10, and two adjacent micro light emitting devices 20 are arranged at intervals.
  • the micro light emitting device 20 may be a micro organic light emitting diode Micro LED or Mini-LED.
  • the reflecting portion 30 is provided on the back plate 10 that is not covered by the micro light emitting device 20. Specifically, for example, the reflecting part 30 is provided at the gap between two adjacent micro light emitting devices 20 and outside the outermost micro light emitting device 20. In one embodiment, in order to facilitate the replacement of the micro light-emitting device, the reflecting portion 30 and the adjacent micro light-emitting device 20 are arranged at intervals. In other words, the reflective portion 30 is arranged at intervals with the set micro light emitting device, and the set micro light emitting device is a micro light emitting device adjacent to the reflective portion 30, wherein the reflective portion 30 is connected to the micro light emitting device.
  • the gap between the devices 20 is convenient for accommodating supporting pins, which are used to pick and place the micro light-emitting device 20.
  • the material of the reflective portion 30 includes silicone resin, and the reflectivity of the silicone resin is greater than that of white paint, that is, the reflectivity of the reflective portion 30 in this embodiment is greater than a preset value. Therefore, the reflectivity can be further increased, thereby increasing the utilization rate of light.
  • the material of the reflective part 30 is white silicone resin, wherein the white silicone resin can be made on the back plate 10 through an injection molding process, and the reflectivity of the white silicone resin is greater than or equal to 95%.
  • the material of the reflective portion 30 is also doped with nanoparticles (not shown in the figure).
  • the material of the reflection part is not limited to silicone.
  • the difference between the height of the top of the reflective portion 30 and the height of the top of the micro light emitting device 20 is within a preset range, that is, the height of the top of the reflective portion 30 is equal to that of the micro light emitting device.
  • the height of the top of the 20 is close, which can better prevent the light from emitting from the side.
  • FIG. 4 is a schematic structural diagram of a backplane structure according to Embodiment 2 of the present invention.
  • the backplane structure of this embodiment may further include a plurality of scattering parts 40, and the scattering parts 40 are arranged above the micro light emitting device 20.
  • each micro light emitting device 20 is provided with a scattering portion 40 above, that is, the micro light emitting device 20 corresponds to the scattering portion 40 one-to-one.
  • the scattering part 40 may be provided on the micro light emitting device 20 and the reflecting part 30 at the same time, wherein the scattering part 40 is spherical in shape, and the longitudinal cross-sectional shape of the scattering part 40 includes a semicircle. At least one of and a semi-ellipse.
  • a scattering part 40 may also be provided above part of the micro light-emitting device 20. The scattering part 40 can scatter the light emitted by the micro light emitting device 20 and the light reflected by the reflecting part 30.
  • the distance between the reflective part 30 and the adjacent micro light-emitting device 20 also needs to ensure that the supporting needle can take in and place the scattering part 40.
  • FIG. 5 is a schematic structural diagram of a backplane structure according to Embodiment 3 of the present invention.
  • the difference between this embodiment and the second embodiment is that the shape of the reflection part is different from the shape of the previous embodiment.
  • the reflective portion 30 of this embodiment includes a peripheral edge portion 31, a bottom portion 32, and a top portion 33.
  • the peripheral edge portion 31 is located between the top portion 32 and the bottom portion 33, and the reflectivity of the peripheral edge portion 31 is greater than that of the top portion.
  • the reflectivity of 33 wherein the reflectivity of the top 33 and the reflectivity of the bottom 31 are both greater than a preset value, for example, the reflectivity of the top 33 is greater than 95%.
  • the shape of the longitudinal section of the peripheral edge portion 31 is an arc shape, wherein the arc opening direction of the peripheral edge portion 31 faces the adjacent micro light emitting device 20, that is, by changing the shape of the peripheral edge portion,
  • the reflectivity of the peripheral portion 31 is set to be greater than that of the top 33.
  • the reflectance of the peripheral portion 31 can also be set to be greater than that of the top 33 by changing the material of the peripheral portion.
  • the setting method is not limited.
  • the present invention also provides a display device, which includes any of the above-mentioned backplane structures.
  • the display device may further include a display panel, and the display panel is arranged above the backplane structure.
  • the display panel may be a liquid crystal display panel.
  • the backplane structure and the display device of the present invention include a backplane; a plurality of micro light-emitting devices arranged on the backplane; two adjacent micro light-emitting devices are arranged at intervals; a plurality of reflective parts, the reflection The part is arranged on the back plate that is not covered by the micro light-emitting device; due to the addition of the reflective part, when light is emitted from the side of the micro light-emitting device, it is reflected by the reflective part and is reflected back to the middle area of the back plate structure , To prevent light from being emitted from the side of the backplane structure, reduce light loss, improve light utilization, and reduce power consumption.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Led Device Packages (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本发明提供一种背板结构以及显示装置,该背板结构包括:背板;多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上。

Description

一种背板结构以及显示装置 技术领域
本发明涉及显示技术领域,特别是涉及一种背板结构以及显示装置。
背景技术
由于微型发光器件的尺寸较小,因此广泛地应用于显示面板的背板结构中,以减小背板结构的厚度。
技术问题
现有的背板结构中采用大量的微型发光器件,然而由于微型发光器件的数量较多,无法设置反射片,导致光线从微型发光器件的侧面射出,从而降低了光线的利用率,增加了功耗。
因此,有必要提供一种背板结构以及显示装置,以解决现有技术所存在的问题。
技术解决方案
本发明的目的在于提供一种背板结构以及显示装置,能够提高光线的利用率以及降低功耗。
为解决上述技术问题,本发明提供一种背板结构,包括:
背板;
多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;
多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上。
本发明还提供一种显示装置,其包括上述背板结构。
有益效果
本发明的背板结构以及显示装置,包括背板;多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上;由于增加反射部,因此当光从微型发光器件的侧面发出时,经过反射部的反射,被反射回背板结构的中间区域,防止光线从背板结构的侧面射出,降低了光线的损耗,提高了光线的利用率,此外还降低了功耗。
附图说明
图1为现有背板结构的结构示意图;
图2为本发明实施例一的背板结构的结构示意图;
图3为图2中背板结构的俯视图;
图4为本发明实施例二的背板结构的结构示意图;
图5为本发明实施例三的背板结构的结构示意图。
本发明的实施方式
以下各实施例的说明是参考附加的图式,用以例示本发明可用以实施的特定实施例。本发明所提到的方向用语,例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等,仅是参考附加图式的方向。因此,使用的方向用语是用以说明及理解本发明,而非用以限制本发明。在图中,结构相似的单元是以相同标号表示。
本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。
如图1所示,现有的背板结构包括背板10以及设置在背板10上的多个微型发光器件20,在未被微型发光器件覆盖的背板10上设置有白漆21,然而白漆21的反射率较低(≤90%),且过虑以后的颜色差异较大,因此导致显示效果较差。
请参照图2至图3,图2为本发明实施例一的背板结构的结构示意图。
如图2和图3所示,本实施例的背板结构100包括:背板10、多个微型发光器件20以及多个反射部30。
背板10可以为电路板,背板10用于驱动微型发光器件20发光。
微型发光器件20设于所述背板10上,相邻两个所述微型发光器件20之间间隔设置。在一实施方式中,微型发光器件20可以为微型有机发光二极管Micro LED或者Mini-LED。
所述反射部30设于未被所述微型发光器件20覆盖的所述背板10上。具体地,比如在相邻两个所述微型发光器件20之间的间隙处以及在最外侧的微型发光器件20的外部设置有所述反射部30。在一实施方式中,为了便于更换微型发光器件,所述反射部30与其相邻的微型发光器件20之间间隔设置。换句话讲,所述反射部30与设定微型发光器件之间间隔设置,所述设定微型发光器件为与所述反射部30相邻的微型发光器件,其中该反射部30与微型发光器件20之间的间隙便于容纳支撑针,该支撑针用于取放微型发光器件20。
在一实施方式中,所述反射部30的材料包括硅树脂,硅树脂的反射率大于白漆的反射率,也即本实施例中的所述反射部30的反射率大于预设值。因此可以进一步提高反射率,从而提高光线的利用率。在一实施方式中,所述反射部30的材料为白色硅树脂,其中白色硅树脂可通过注塑工艺制作在背板10上,白色硅树脂的反射率大于或等于95%。比如在其他实施方式中,所述反射部30的材料中还掺杂有纳米颗粒(图中未标出)。当然,可以理解的,反射部的材料不限于硅树脂。
在一实施方式中,所述反射部30的顶部的高度与所述微型发光器件20的顶部的高度之间的差值位于预设范围内,也即反射部30的顶部的高度与微型发光器件20的顶部的高度接近,从而能够更好地防止光线从侧边射出。
在具体使用过程中,当光从微型发光器件20的侧面发出时,经过反射部30的反射,被反射回背板结构的中间区域,防止光线从背板的侧面射出,从而使得光线被重新利用,降低了光线的损耗,提高了光线的利用率,降低了功耗。
请参照图4,图4为本发明实施例二的背板结构的结构示意图。
如图4所示,在上一实施例的基础上,本实施例的背板结构还可包括多个散射部40,散射部40设于所述微型发光器件20的上方。在一实施方式中,每一个微型发光器件20的上方均设置有一散射部40,也即微型发光器件20与散射部40一一对应。在其他实施方式中,散射部40可同时设置在微型发光器件20和反射部30上,其中所述散射部40的形状为球轮状,其中所述散射部40的纵截面形状包括半圆形和半椭圆形中的至少一种。当然,可以理解的,也可在部分微型发光器件20的上方设置有散射部40。散射部40能够对微型发光器件20发出的光线以及反射部30反射回来的光线进行散射。
其中在本实施例中,反射部30与其相邻的微型发光器件20之间的间距还需要保证支撑针可以取放散射部40。
在具体使用过程中,光从微型发光器件20的侧面发出时,经过反射部30的反射,被反射回散射部40,从而被重新利用,防止光线从背板的侧面射出,降低了光线的损耗,提高了光线的利用率,降低了功耗。
请参照图5,图5为本发明实施例三的背板结构的结构示意图。
如图5所示,本实施例与实施例二的区别在于,反射部的形状与上一实施例的形状不同。
本实施例的所述反射部30包括周缘部31、底部32和顶部33,所述周缘部31位于所述顶部32和所述底部33之间,所述周缘部31的反射率大于所述顶部33的反射率,其中所述顶部33的反射率以及底部31的反射率均大于预设值,比如顶部33的反射率大于95%。通过将周缘部31的反射率设置的比较大,从而可以更好地防止光线的光线从侧边射出。
在一实施方式中,所述周缘部31的纵截面的形状为圆弧形,其中周缘部31的弧形的开口方向朝向与其相邻的微型发光器件20,也即通过改变周缘部的形状,将周缘部31的反射率设置比其顶部33的反射率大,当然在其他实施方式中,也可通过改变周缘部的材料使得周缘部31的反射率设置比其顶部33的反射率大,具体的设置方式不限。
可以理解的,本实施例的方案同样适用于实施例一。
本发明还提供一种显示装置,其包括上述任意一种背板结构。此外显示装置还可包括显示面板,显示面板设于该背板结构的上方。在一实施方式中,该显示面板可为液晶显示面板。
本发明的背板结构以及显示装置,包括背板;多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上;由于增加反射部,因此当光从微型发光器件的侧面发出时,经过反射部的反射,被反射回背板结构的中间区域,防止光线从背板结构的侧面射出,降低了光线的损耗,提高了光线的利用率,此外还降低了功耗。
综上所述,虽然本发明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发明,本领域的普通技术人员,在不脱离本发明的精神和范围内,均可作各种更动与润饰,因此本发明的保护范围以权利要求界定的范围为准。

Claims (20)

  1. 一种背板结构,其包括:
    背板;
    多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;以及
    多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上。
  2. 根据权利要求1所述的背板结构,其中
    所述反射部的材料包括硅树脂。
  3. 根据权利要求2所述的背板结构,其中
    所述反射部的材料中还掺杂有纳米颗粒。
  4. 根据权利要求1所述的背板结构,其中
    所述反射部包括周缘部、顶部和底部,所述周缘部设于所述顶部和所述底部之间,所述周缘部的反射率大于所述顶部的反射率。
  5. 根据权利要求4所述的背板结构,其中
    所述周缘部的纵截面的形状为圆弧形。
  6. 根据权利要求1所述的背板结构,其中
    所述反射部与其相邻的微型发光器件之间间隔设置。
  7. 根据权利要求1所述的背板结构,其中
    所述反射部的顶部的高度与所述微型发光器件的顶部的高度之间的差值位于预设范围内。
  8. 根据权利要求1所述的背板结构,其中
    所述背板结构还包括多个散射部,所述散射部设于所述微型发光器件的上方。
  9. 根据权利要求8所述的背板结构,其中
    所述散射部的纵截面形状包括半圆形和半椭圆形中的至少一种。
  10. 根据权利要求8所述的背板结构,其中
    所述散射部与所述微型发光器件一一对应。
  11. 一种显示装置,其包括背板结构,其包括:
    背板;
    多个微型发光器件,设于所述背板上;相邻两个所述微型发光器件之间间隔设置;以及
    多个反射部,所述反射部设于未被所述微型发光器件覆盖的所述背板上。
  12. 根据权利要求11所述的显示装置,其中
    所述反射部的材料包括硅树脂。
  13. 根据权利要求12所述的显示装置,其中
    所述反射部的材料中还掺杂有纳米颗粒。
  14. 根据权利要求11所述的显示装置,其中
    所述反射部包括周缘部、顶部和底部,所述周缘部设于所述顶部和所述底部之间,所述周缘部的反射率大于所述顶部的反射率。
  15. 根据权利要求14所述的显示装置,其中
    所述周缘部的纵截面的形状为圆弧形。
  16. 根据权利要求11所述的显示装置,其中
    所述反射部与其相邻的微型发光器件之间间隔设置。
  17. 根据权利要求11所述的显示装置,其中
    所述反射部的顶部的高度与所述微型发光器件的顶部的高度之间的差值位于预设范围内。
  18. 根据权利要求11所述的显示装置,其中
    所述背板结构还包括多个散射部,所述散射部设于所述微型发光器件的上方。
  19. 根据权利要求18所述的显示装置,其中
    所述散射部的纵截面形状包括半圆形和半椭圆形中的至少一种。
  20. 根据权利要求11所述的显示装置,其还包括显示面板,所述显示面板设于所述背板结构的上方。
PCT/CN2020/071641 2019-12-26 2020-01-13 一种背板结构以及显示装置 WO2021128507A1 (zh)

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