WO2019210710A1 - 光源组件、背光模组及显示装置 - Google Patents

光源组件、背光模组及显示装置 Download PDF

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Publication number
WO2019210710A1
WO2019210710A1 PCT/CN2019/071595 CN2019071595W WO2019210710A1 WO 2019210710 A1 WO2019210710 A1 WO 2019210710A1 CN 2019071595 W CN2019071595 W CN 2019071595W WO 2019210710 A1 WO2019210710 A1 WO 2019210710A1
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WO
WIPO (PCT)
Prior art keywords
light source
substrate
guide plate
buffer member
source assembly
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Application number
PCT/CN2019/071595
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English (en)
French (fr)
Inventor
程子洋
Original Assignee
京东方科技集团股份有限公司
北京京东方专用显示科技有限公司
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Application filed by 京东方科技集团股份有限公司, 北京京东方专用显示科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US16/755,912 priority Critical patent/US20200333525A1/en
Publication of WO2019210710A1 publication Critical patent/WO2019210710A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like

Definitions

  • the present disclosure relates to a light source assembly, a backlight module, and a display device.
  • the backlight module can provide backlight for the liquid crystal panel, so that the liquid crystal panel displays a visual image that can be viewed by the user.
  • the common backlight module has a side-in type and a direct-down type.
  • the side-in type backlight module includes a light guide plate, and the light emitted by the light source is incident from the side of the light guide plate, and is guided by the reflection of the light guide plate.
  • the top surface of the light panel outputs light.
  • LED Light Emitting Diode
  • the LED lamp When the LED light bar in the side-entry backlight module is mounted, the LED lamp is generally packaged on the aluminum substrate and then directly fixed to the back plate by double-sided tape.
  • the light emitted by the light bar can convert the multi-point light source on the side of the light guide plate into the surface light source on the top surface of the light guide plate through the light guide plate.
  • a small spacing is provided between the LED strip and the light guide.
  • a light source assembly includes: a substrate; at least one light source on the substrate; and at least one buffer member on the substrate, and the at least one light source is located on the substrate The same side; wherein, along an outer normal direction of the surface of the substrate, a maximum height of the at least one buffer member is greater than a maximum height of the at least one light source.
  • the method further includes: a reflective sheet on a side of the at least one buffer member away from the substrate.
  • a groove structure penetrating in an outer normal direction of a surface of the substrate is provided on the at least one buffer member, and the at least one light source is embedded in the groove structure.
  • a reflective sheet is further included, the reflective sheet being located on the at least one buffer member away from the side of the substrate and the inner wall surface of the groove structure.
  • the channel structure has a flared end along an outer normal direction of a surface of the substrate.
  • the flared end has a flare angle of 40° to 60° along the thickness direction of the light guide plate.
  • the flared end has a flare angle along the length of the substrate of from 90° to 150°.
  • a backlight module includes: a light guide plate; and the foregoing light source assembly; wherein the light guide plate is located on a side of the at least one buffer member away from the substrate.
  • a surface of the one or more cushioning members is provided with a groove structure, and the groove structure has a flared end along an outer normal direction of a surface of the substrate, the flared end being along the edge
  • the flare size of the light guide plate in the thickness direction is not greater than the thickness of the light guide plate.
  • a backlight module includes: a light guide plate; and the foregoing light source assembly; wherein the light guide plate is located on a side of the at least one buffer member away from the substrate.
  • the flared end has a flare size along a thickness direction of the light guide plate that is not greater than a thickness of the light guide plate.
  • a display device comprising: the foregoing backlight module.
  • FIG. 1 is a schematic cross-sectional view of one embodiment of a light source assembly in accordance with the present disclosure
  • FIG. 2 is a schematic structural view of a cushioning member in accordance with an embodiment of a light source assembly of the present disclosure
  • FIG. 3 is a schematic structural view of an embodiment of a light source assembly according to the present disclosure.
  • Figure 4 is an enlarged schematic view of circle A in Figure 3;
  • FIG. 5 is a schematic structural view of an embodiment of a backlight module according to the present disclosure.
  • a particular device when it is described that a particular device is located between the first device and the second device, there may be intervening devices between the particular device and the first device or the second device, or there may be no intervening devices.
  • that particular device can be directly connected to the other device without intervening devices, or without intervening devices directly connected to the other devices.
  • the inventors have found through research that in some related technologies of the side-lit backlight module, vibration occurs in some application scenarios (for example, on a vehicle, etc.).
  • the distance between the light source component (for example, the LED light bar) and the light guide plate is small.
  • the side-lit backlight module vibrates, the light guide plate easily collides with the light source assembly, thereby causing damage to the light source assembly.
  • the embodiments of the present disclosure provide a light source assembly, a backlight module, and a display device, which can reduce the risk of damage of the light source assembly.
  • FIG. 1 is a schematic cross-sectional view of one embodiment of a light source assembly in accordance with the present disclosure.
  • a light source assembly includes a substrate 100, at least one light source 200, and at least one buffer member 300.
  • the at least one light source 200 can include a point source, a line source, or a surface source and is located on the substrate.
  • the light source assembly may employ a light emitting diode LED or a laser source as the point source 200.
  • At least one buffer member 300 may be disposed on the substrate 100 and located on the same side of the substrate 100 as the at least one light source 200.
  • the cushioning member 300 may employ an elastic material having compressibility such as silica gel, plastic or rubber. According to the heat generation condition of the light source 200, the buffer member 300 can be selected from materials and models having better heat resistance.
  • the height H2 of the cushioning member 300 may be set to be larger than the height H1 of the light source 200 along the outer normal direction of the surface of the substrate 100. Specifically, if each of the light sources 200 is equal in height and each of the buffer members 300 is equal in height, the height of the buffer member 300 is greater than the height of the light source 200. If there is a difference in the heights of the plurality of light sources 200, the maximum height of all the cushioning members 300 can be made larger than the maximum height of all the light sources 200.
  • one side of the light source assembly is provided with an object and the object may move toward the light source assembly.
  • the object and the light source assembly are moved at a relatively close distance, since the height H2 is greater than the height H1, a certain gap is always maintained between the object and the light source 200 to prevent the object from directly colliding with the light source 200.
  • the cushioning member 300 also absorbs the impact energy of the object, reducing the possibility that the light source 200 is damaged, thereby increasing the reliability of the light source assembly.
  • the buffer member can buffer the movement of the object when the object moves sideways between the light source and the light source. Thereby reducing the risk of damage to the light source assembly caused by the collision of the object.
  • the light source assembly further includes a reflective sheet 400.
  • the reflective sheet 400 is located on a side of the at least one buffer member 300 away from the substrate 100.
  • the reflection sheet 400 may partially or entirely cover the surface of the cushioning member 300.
  • the reflective sheet 400 is capable of reflecting light emitted to the surface of the cushioning member 300, reducing or avoiding absorption of light by the cushioning member 300.
  • the reflection sheet 400 may be formed by coating, that is, a film layer having a reflection effect is applied to the surface of the buffer member 300.
  • the reflective sheet 400 is a reflective member having a reflective surface, and the reflective member is attached to the surface of the cushioning member 300 by gluing or the like.
  • a groove structure may be provided on the buffer member 300 that is disposed along the outer normal direction of the surface of the substrate 100, and may be used to embed the light source 200.
  • a plurality of cushioning members 300 may also be employed and the light source 200 is placed in the gap between the plurality of cushioning members 300.
  • a buffer material 300 of a transparent material may be employed to cover the substrate 100 and the light source 200. Or at least the buffer member 300 is provided with a transparent material corresponding to a portion of the light source 200.
  • the reflection sheet 400 may be located on the inner wall surface of the groove structure except for the side of the buffer member 300 away from the substrate 100 to improve the reflection effect.
  • a groove structure 310 (refer to FIG. 2) is provided on the surface of the cushioning member 300.
  • At least one light source 200 is embedded within the slot structure 310.
  • the reflective sheet 400 may cover the surface of the cushioning member 300 and the inner wall surface of the groove structure 310.
  • the groove structure herein may include a closed or non-closed groove or hole that can accommodate the embedded at least one light source 200.
  • the trench structure 310 can be provided with a flared end along the outer normal direction of the surface of the substrate 100. This flared end gradually transitions from a smaller cross-sectional dimension on the side close to the substrate 100 to a larger cross-sectional dimension away from the side of the substrate 100, thereby forming a structure that gradually spreads from the inside to the outside.
  • the light guide plate 500 is located on the side of the light source assembly (refer to FIG. 5).
  • the light emitted by the light source 200 should not exceed the thickness range of the light guide plate 500 as much as possible to reduce or avoid the problem of light leakage and reduced light guiding performance.
  • the flare angle ⁇ of the flared end along the thickness direction of the light guide plate 500 is 40° to 60°, for example, 50° or the like. The selection of the flare angle ⁇ may be determined according to at least one of the size of the light source 200, the thickness of the light guide plate 500, and the distance between the light guide plate 500 and the light source 200.
  • FIG. 2 is a schematic block diagram of a cushioning member 300 in accordance with one embodiment of a light source assembly of the present disclosure.
  • the cushioning member 300 is formed in a strip shape to mate with the strip-shaped substrate 100.
  • a plurality of groove structures 310 having flared ends may be spaced apart along the length direction of the buffer member 300 (ie, the length direction of the substrate 100).
  • the cross-sectional shape of the groove structure 310 may be a rectangle, and other shapes such as an ellipse, a diamond, or the like may be selected.
  • the groove structure 310 having a rectangular cross section has an inner wall surface 320 along the longitudinal direction of the cushioning member 300 and an inner wall surface 330 in the width direction (ie, the thickness direction of the light guide plate 500).
  • FIG. 3 is a schematic block diagram of one embodiment of a light source assembly in accordance with the present disclosure.
  • the substrate 100 is also formed in a strip shape, and a buffer member 300, a light source 200, and a power supply interface 600 are provided on one surface of the substrate 100.
  • the light source 200 is an LED point light source and is embedded in the groove structure 310 provided on the buffer member 300.
  • FIG. 4 is an enlarged schematic view of a circle A in FIG.
  • the flared end of the trench structure 310 may be along the length of the substrate 100 in consideration of factors such as the light emitting angle of the light source 200 itself and the spacing width on the strip substrate 100.
  • the flare angle ⁇ is from 90° to 150°, for example, 120°.
  • FIG. 5 is a schematic structural view of an embodiment of a backlight module according to the present disclosure.
  • the backlight module includes a light guide plate 500 and the aforementioned light source assembly.
  • the light guide plate 500 is located on a side of the at least one buffer member 300 away from the substrate 100.
  • the backlight module can be a side-lit backlight module, and in other embodiments, other types of backlight modules can also be used.
  • the buffering member 300 can effectively reduce the impact between the light guide plate 500 and the light source assembly caused by the vibration, and prevent the light source 200 from being guided by the light guide plate. 500 collision damage.
  • the groove structure 310 provided on the surface of the cushioning member 300 may have a flared end along the outer normal direction of the surface of the substrate 100.
  • the flared end T2 in the thickness direction of the light guide plate 500 is not larger than the thickness T1 of the light guide plate 500 to reduce or avoid the problem of light leakage and a decrease in light guiding performance.
  • the embodiments of the backlight module described above can be used in various types of devices that require backlighting, such as display devices or lighting devices. Accordingly, the present disclosure also provides an embodiment of a display device including the aforementioned backlight module.
  • a display device including the aforementioned backlight module.
  • any of the embodiments of the above-described side-lit backlight module of the present disclosure may provide backlighting for display of the liquid crystal panel.
  • the display device embodiment can be applied to a vibrating scene (eg, used on a vehicle) for better reliability.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种光源组件、背光模组及显示装置。光源组件包括：基板(100)；至少一个光源(200)，位于基板(100)上；和至少一个缓冲件(300)，位于基板(100)上，且与至少一个光源(200)位于基板(100)的同侧；其中，沿基板(100)的表面的外法线方向，至少一个缓冲件(300)的最大高度大于至少一个光源(200)的最大高度。通过在光源组件的基板(100)上设置最大高度大于光源(200)最大高度的缓冲件(300)，使得缓冲件(300)能够在光源(200)侧方的物体与光源(200)之间发生相向运动时，对物体的运动进行缓冲，从而降低因光源组件被物体碰撞而损坏的风险。

Description

光源组件、背光模组及显示装置
相关申请的交叉引用
本申请是以CN申请号为201820641993.4，申请日为2018年5月2日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及一种光源组件、背光模组及显示装置。
背景技术
在液晶显示(Liquid Crystal Display，简称LCD)装置中，背光模组能够为液晶面板提供背光，以便液晶面板上显示出用户可观看的视觉画面。
常见的背光模组有侧入式和直下式两种形式，其中侧入式的背光模组包含导光板，光源发出的光线从导光板的侧方射入，并在导光板的反射作用下向导光板的顶面输出光线。随着发光二极管(Light Emitting Diode，简称LED)技术的不断进步，在侧入式背光模组的相关技术中，采用LED灯条作为背光模组中的主要光源形式。
在进行侧入式背光模组中的LED灯条的安装时，一般将LED灯封装在铝基板上，然后通过双面胶带直接固定在背板上。灯条发出的光可通过导光板将导光板侧面的多点光源转换成导光板顶面的面光源。为了减少光损失，在LED灯条与导光板之间设置较小的间距。
发明内容
在本公开的一个方面，提供一种光源组件，包括：基板；至少一个光源，位于所述基板上；和至少一个缓冲件，位于所述基板上，且与所述至少一个光源位于所述基板的同侧；其中，沿所述基板的表面的外法线方向，所述至少一个缓冲件的最大高度大于所述至少一个光源的最大高度。
在一些实施例中，还包括：反射片，位于所述至少一个缓冲件上远离所述基板的一侧。
在一些实施例中，在所述至少一个缓冲件上设有沿所述基板的表面的外法线方向贯通的槽结构，所述至少一个光源嵌设在所述槽结构内。
在一些实施例中，还包括反射片，所述反射片位于所述至少一个缓冲件上远离所述基板一侧和所述槽结构的内壁面上。
在一些实施例中，所述槽结构具有沿所述基板的表面的外法线方向的扩口端。
在一些实施例中，所述扩口端沿导光板的厚度方向的扩口角度为40°～60°。
在一些实施例中，所述扩口端沿所述基板的长度方向的扩口角度为90°～150°。
在本公开的另一个方面，提供一种背光模组，包括：导光板；和前述的光源组件；其中，所述导光板位于所述至少一个缓冲件远离所述基板的一侧。
在一些实施例中，所述一个或多个缓冲件的表面设有槽结构，且所述槽结构具有沿所述基板的表面的外法线方向的扩口端，所述扩口端在沿所述导光板的厚度方向的扩口尺寸不大于所述导光板的厚度。
在本公开的另一个方面，提供一种背光模组，包括：导光板；和前述的光源组件；其中，所述导光板位于所述至少一个缓冲件远离所述基板的一侧。
在一些实施例中，所述扩口端在沿所述导光板的厚度方向的扩口尺寸不大于所述导光板的厚度。
在本公开的又一个方面，提供一种显示装置，包括：前述的背光模组。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1是根据本公开光源组件的一个实施例的截面示意图；
图2是根据本公开光源组件的一个实施例中缓冲件的结构示意图；
图3是根据本公开光源组件的一个实施例的结构示意图；
图4是图3中圆圈A的放大示意图；
图5是根据本公开背光模组的一个实施例的结构示意图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述 仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件的相对布置、数字表达式和数值应被解释为仅仅是示例性的，而不是作为限制。
本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的部分。“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在本公开中，当描述到特定器件位于第一器件和第二器件之间时，在该特定器件与第一器件或第二器件之间可以存在居间器件，也可以不存在居间器件。当描述到特定器件连接其它器件时，该特定器件可以与所述其它器件直接连接而不具有居间器件，也可以不与所述其它器件直接连接而具有居间器件。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
发明人经研究发现，在有些侧入式背光模组的相关技术中，在一些应用场景(例如在车辆上使用等)下会发生振动。一般来说，为了确保导光效果，光源组件(例如LED灯条)与导光板的间距较小。而当侧入式背光模组振动时，导光板容易与光源组件之间发生磕碰，进而造成光源组件的损坏。
有鉴于此，本公开实施例提供一种光源组件、背光模组及显示装置，能够降低光源组件损坏的风险。
图1是根据本公开光源组件的一个实施例的截面示意图。
参考图1，在一些实施例中，光源组件包括：基板100、至少一个光源200和至少一个缓冲件300。至少一个光源200可以包括点光源、线光源或面光源，并位于所述基板上。举例来说，光源组件可采用发光二极管LED或激光源作为点光源200。至 少一个缓冲件300可设置在基板100上，且与至少一个光源200位于所述基板100的同侧。
在一些实施例中，缓冲件300可采用具有压缩性的弹性材料，例如硅胶、塑料或橡胶等。根据光源200的发热情况，缓冲件300可相应地选用耐热性较好的材料及型号。
为了使缓冲件300能够起到良好的缓冲效果，可沿基板100的表面的外法线方向，将缓冲件300的高度H2设置成大于光源200的高度H1。具体来说，如果各个光源200等高，且各个缓冲件300等高，则缓冲件300的高度均大于光源200的高度。如果多个光源200的高度存在差异，那么可使所有缓冲件300的最大高度大于所有光源200的最大高度。
在一些实施例中，光源组件的一侧设有物体，且该物体可能与光源组件相向运动。当该物体与光源组件发生较近距离的相向运动时，由于高度H2大于高度H1，因此该物体与光源200之间始终维持有一定的间隙，避免物体直接碰撞到光源200。并且，缓冲件300还对物体的冲击能量进行吸收，降低了光源200被碰坏的可能性，从而增加了光源组件的可靠性。
在上述实施例中，通过在光源组件的基板上设置最大高度大于光源最大高度的缓冲件，使得缓冲件能够在光源侧方的物体与光源之间发生相向运动时，对物体的运动进行缓冲，从而降低因光源组件被物体碰撞而损坏的风险。
为了提高光源200发出光线的利用率，参考图1，在一些实施例中，光源组件还包括反射片400。该反射片400位于所述至少一个缓冲件300上远离所述基板100的一侧。反射片400可部分或全部地覆盖在所述缓冲件300的表面上。反射片400能够对发射到缓冲件300的表面的光线进行反射，减少或避免缓冲件300对光线的吸收。
反射片400可以采用涂层的方式形成，即在缓冲件300的表面涂敷具有反射作用的膜层。在另一些实施例中，反射片400为具有反射表面的反射部件，且该反射部件以粘贴等方式固定在缓冲件300的表面。
为了尽量避免缓冲件300对光源200发射光线的遮挡作用，在一些实施例中，可选择在缓冲件300上设置沿基板100的表面的外法线方向贯通的槽结构，可用于嵌入光源200。在另一些实施例中，还可以采用多个缓冲件300，并使光源200处于多个缓冲件300之间的间隙中。在又一些实施例中，可采用透明材质的缓冲件300来覆盖基板100和光源200。或者至少在缓冲件300对应于光源200的局部设置透明材质。
对于槽结构，反射片400除了位于缓冲件300上远离基板100的一侧，还可位于槽结构的内壁面上，以提高反射效果。例如，图1中，在缓冲件300的表面设置有槽结构310(参考图2)。至少一个光源200嵌设在槽结构310内。反射片400可覆盖在缓冲件300的表面和槽结构310的内壁面上。这里的槽结构可以包括边界封闭或非封闭的槽或孔，其能够容纳嵌入的至少一个光源200即可。
为了增加光源200发射光线的角度范围，在一些实施例中，可使槽结构310具有沿所述基板100的表面的外法线方向的扩口端(flared end)。这种扩口端从靠近基板100的一侧的较小截面尺寸逐渐过渡到远离基板100一侧的较大截面尺寸，从而形成从内向外逐渐展开的结构。
在包括本公开的光源组件的侧入式背光模组中，导光板500位于光源组件的侧方(参考图5)。光源200发出的光线要尽量不超出导光板500的厚度范围，以减少或避免漏光以及导光效能降低的问题。参考图1，在一些实施例中，扩口端沿导光板500的厚度方向的扩口角度α为40°～60°，例如50°等。扩口角度α的选择可根据光源200的尺寸、导光板500的厚度和导光板500与光源200之间的距离等因素中的至少一种确定。
图2是根据本公开光源组件的一个实施例中缓冲件300的结构示意图。
参考图2，在一些实施例中，缓冲件300被制作成条形，以便与条形的基板100进行配合。沿缓冲件300的长度方向(也即基板100的长度方向)，可间隔设置多个具有扩口端的槽结构310。槽结构310的横截面形状可选为矩形，也可以选择椭圆形、菱形等其他形状。在图2中，横截面为矩形的槽结构310具有沿缓冲件300的长度方向的内壁面320和沿宽度方向(即导光板500的厚度方向)的内壁面330。
图3是根据本公开光源组件的一个实施例的结构示意图。
在图3中，基板100也被制作成条形，并在基板100的一侧表面设置有缓冲件300、光源200以及电源供电接口600。光源200为LED点光源，并嵌设在缓冲件300上设置的槽结构310内。
图4是图3中圆圈A的放大示意图。
参考图4，在一些实施例中，考虑到光源200自身的发光角度，以及在条形的基板100上的间隔宽度等因素，可使得槽结构310的扩口端沿所述基板100的长度方向的扩口角度β为90°～150°，例如120°等。通过设置合适的扩口角度β，能够使各个光源200发出的光线尽量多的进入导光板500(参考图5)，从而提高光源组件的 效能。
图5是根据本公开背光模组的一个实施例的结构示意图。
参考图5，在一些实施例中，背光模组包括导光板500和前述的光源组件。导光板500位于所述至少一个缓冲件300远离所述基板100的一侧。背光模组可为侧入式背光模组，在其他实施例中也可以是其它形式的背光模组。举例来说，对于一些设置在振动场景下的侧入式背光模组来说，缓冲件300能够有效地降低振动所带来的导光板500与光源组件之间的冲击，避免光源200被导光板500碰撞损坏。
在缓冲件300的表面设置的槽结构310可具有沿所述基板100的表面的外法线方向的扩口端。该扩口端在沿所述导光板500的厚度方向的扩口尺寸T2不大于所述导光板500的厚度T1，以减少或避免漏光以及导光效能降低的问题。
上述背光模组的各实施例可用于各类需要使用背光的设备，例如显示装置或照明装置等。因此，本公开也提供了一种显示装置的实施例，包括前述的背光模组。例如：在具有液晶面板的液晶显示装置中，本公开的上述侧入式背光模组的任一实施例可为液晶面板的显示提供背光。通过采用前述的背光模组实施例，显示装置实施例可应用于振动场景(例如在车辆上使用)中，以获得更好的可靠性。
至此，已经详细描述了本公开的各实施例。为了避免遮蔽本公开的构思，没有描述本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改或者对部分技术特征进行等同替换。本公开的范围由所附权利要求来限定。

Claims (12)

  1. 一种光源组件，包括：
    基板；
    至少一个光源，位于所述基板上；和
    至少一个缓冲件，位于所述基板上，且与所述至少一个光源位于所述基板的同侧；其中，沿所述基板的表面的外法线方向，所述至少一个缓冲件的最大高度大于所述至少一个光源的最大高度。
  2. 根据权利要求1所述的光源组件，还包括：
    反射片，位于所述至少一个缓冲件上远离所述基板的一侧。
  3. 根据权利要求1所述的光源组件，其中，在所述至少一个缓冲件上设有沿所述基板的表面的外法线方向贯通的槽结构，所述至少一个光源嵌设在所述槽结构内。
  4. 根据权利要求3所述的光源组件，还包括反射片，所述反射片位于所述至少一个缓冲件上远离所述基板一侧和所述槽结构的内壁面上。
  5. 根据权利要求3所述的光源组件，其中，所述槽结构具有沿所述基板的表面的外法线方向的扩口端。
  6. 根据权利要求5所述的光源组件，其中，所述扩口端沿导光板的厚度方向的扩口角度为40°～60°。
  7. 根据权利要求5所述的光源组件，其中，所述扩口端沿所述基板的长度方向的扩口角度为90°～150°。
  8. 一种背光模组，包括：
    导光板；和
    权利要求1～4任一所述的光源组件；
    其中，所述导光板位于所述至少一个缓冲件远离所述基板的一侧。
  9. 根据权利要求8所述的背光模组，其中，所述至少一个缓冲件的表面设有槽结构，且所述槽结构具有沿所述基板的表面的外法线方向的扩口端，所述扩口端在沿所述导光板的厚度方向的扩口尺寸不大于所述导光板的厚度。
  10. 一种背光模组，包括：
    导光板；和
    权利要求5～7任一所述的光源组件；
    其中，所述导光板位于所述至少一个缓冲件远离所述基板的一侧。
  11. 根据权利要求10所述的背光模组，其中，所述扩口端在沿所述导光板的厚度方向的扩口尺寸不大于所述导光板的厚度。
  12. 一种显示装置，包括：权利要求8～11任一所述的背光模组。
PCT/CN2019/071595 2018-05-02 2019-01-14 光源组件、背光模组及显示装置 WO2019210710A1 (zh)

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