WO2019227957A1 - 背光模组以及包括该背光模组的显示装置 - Google Patents

背光模组以及包括该背光模组的显示装置 Download PDF

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Publication number
WO2019227957A1
WO2019227957A1 PCT/CN2019/073428 CN2019073428W WO2019227957A1 WO 2019227957 A1 WO2019227957 A1 WO 2019227957A1 CN 2019073428 W CN2019073428 W CN 2019073428W WO 2019227957 A1 WO2019227957 A1 WO 2019227957A1
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light
light emitting
backlight module
emitting unit
display
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PCT/CN2019/073428
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English (en)
French (fr)
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唐建业
项得胜
刘帅南
常橙
郭亚军
徐俊杰
吴建武
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京东方科技集团股份有限公司
北京京东方光电科技有限公司
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Publication of WO2019227957A1 publication Critical patent/WO2019227957A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
    • H04M1/026—Details of the structure or mounting of specific components
    • H04M1/0266—Details of the structure or mounting of specific components for a display module assembly
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

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  • Examples of the present disclosure relate to the field of display technology, and particularly to the field of backlight technology.
  • narrow-frame mobile phones such as full-screen mobile phones
  • the frame of mobile phone modules is becoming narrower and narrower, and the corners of the backlight module are designed to be rounded.
  • the mobile phone module is "narrower and longer", so the number of light-emitting components (such as 3004 packaged LEDs) of the backlight module is limited. risk. If you want to ensure the number of 3004 packaged LEDs, a barrier cannot be set between these LEDs in the plastic frame, so the strength is poor.
  • the backlight module 1 ′ includes 16 3004 packaged LEDs, in which the LEDs are evenly arranged, and the distance between adjacent LEDs (that is, d3 ′) is equal and the size is small, which cannot be set.
  • the area of the LED flexible circuit board and the plastic frame is small, there is a risk of strength;
  • the thickness of the plastic frame (that is, d1 ') at the two corners of the backlight module is small, so the molding of the plastic frame is difficult Large and unable to set a retaining wall, resulting in a greater risk of light leakage at the two corners.
  • the present disclosure provides a backlight module for a display screen.
  • the backlight module includes a first light emitting unit located on both sides of the backlight module and a first light emitting unit on both sides of the backlight module.
  • the first light emitting unit may include a plurality of light emitting elements on each side of the backlight module, from the light emitting element of the first light emitting unit adjacent to the second light emitting unit to the light emitting element of the first light emitting unit.
  • the outermost light-emitting element of the first light-emitting unit on the same side of the light-emitting element, the distance between each light-emitting element and the display module of the display screen may be equal or decreasing.
  • the distance between the light emitting elements of the first light emitting unit and the light emitting elements of the second light emitting unit adjacent to each other may be smaller than the distance between the light emitting elements of the two second light emitting units adjacent to each other.
  • the first light emitting unit may include a plurality of light emitting elements on each side of the backlight module, from a light emitting element of a second light emitting unit adjacent to the first light emitting unit to the first light emitting unit.
  • the outermost light-emitting elements of the first light-emitting unit on the same side the distance between two adjacent light-emitting elements is equal or decreasing.
  • the space occupied by the mobile phone module can be reduced, so that it is possible to arrange a sufficient number of conventional light-emitting elements in a narrower full-screen mobile phone frame, thereby ensuring the display brightness through the conventional light-emitting elements.
  • a blocking portion may be provided between the light-emitting elements of two adjacent second light-emitting units, between the light-emitting element of the adjacent first light-emitting unit and the light-emitting element of the second light-emitting unit, and the light emission of the two first light-emitting units. No barrier is provided between the elements. This can enhance the intensity of the backlight module.
  • a blocking portion is provided at a corner of the backlight module at a position adjacent to the light emitting element of the first light emitting unit. Since the distance between the outermost light-emitting element and the display module is reduced, space is reserved for retaining the blocking portion (also referred to as a "retaining wall"). This can prevent light leakage at the corners of the mobile phone module, and further improves the problem of darkening the corners.
  • the backlight module may further include a light guide plate, and a side of the light guide plate for reflecting light may be formed with a microstructure to reduce a reflection angle of the incident light.
  • a side of the light guide plate for reflecting light may have a jagged structure. Therefore, the reflection angle of the incident light can be reduced, and the corner light density of the mobile phone module can be increased.
  • a display screen which includes a display module and the aforementioned backlight module.
  • a display device including the aforementioned display screen.
  • FIG. 1 is a partial schematic cross-sectional view of a narrow-frame mobile phone module
  • FIG. 2 is a detailed enlarged schematic view of the mobile phone module shown in FIG. 1;
  • FIG. 2 is a detailed enlarged schematic view of the mobile phone module shown in FIG. 1;
  • FIG. 3 is a partial schematic cross-sectional view of a mobile phone module including a backlight module according to a specific embodiment of the present disclosure
  • FIG. 4 is a detailed enlarged schematic view of the mobile phone module shown in FIG. 3;
  • FIG. 5 is a schematic diagram of an exemplary light path of the backlight module in FIG. 3;
  • FIG. 6 is a schematic diagram of another exemplary light path of the backlight module in FIG. 3, in which the light guide plate is partially optimized;
  • FIG. 7 is a detailed enlarged schematic view of a partially optimized light guide plate shown in FIG. 6;
  • FIG. 8 is a schematic diagram comparing two exemplary optical paths shown in FIGS. 5 and 6.
  • the present disclosure provides a backlight module suitable for a narrow-frame mobile phone, such as a full-screen mobile phone.
  • a backlight module suitable for a narrow-frame mobile phone, such as a full-screen mobile phone.
  • the two outermost light emitting elements are close to the display area, and no barrier wall is provided between the light emitting elements and the adjacent light emitting elements.
  • Setting up a barrier wall makes it possible to use conventional light-emitting components such as 3004 package LEDs in the backlight module of narrow-frame mobile phones, thereby increasing the number of light-emitting components and increasing the brightness of the backlight module, while also enhancing the backlight module's performance. Intensity, to improve the darkening of the corners, thereby improving the display quality of the mobile phone module.
  • a 6.0-inch mobile phone module is taken as an example to describe a specific embodiment of the backlight module according to the present disclosure.
  • FIG. 3 is a partial schematic cross-sectional view of a mobile phone module.
  • the mobile phone module 1 includes a backlight module according to a specific embodiment of the present disclosure.
  • the backlight module of the mobile phone module 1 shown in part can use a sufficient number of conventional light emitting elements, such as 16 3004 packaged LEDs, to increase the module brightness, improve the darkening of the two corners, and increase the backlight intensity.
  • FIG. 4 is a partially enlarged schematic diagram of the mobile phone module 1 shown in FIG. 3.
  • the mobile phone module 1 includes a backlight module 10 and a display module 11.
  • the backlight module 10 may include a plastic frame 103, a light guide plate 104, a first light emitting unit, a second light emitting unit, and a flexible circuit board. 106 and so on.
  • the first light emitting unit and the second light emitting unit may each include a plurality of light emitting elements 105.
  • the first light-emitting unit includes two light-emitting elements 105
  • the second light-emitting unit includes 14 light-emitting elements 105.
  • each light-emitting unit may be provided with 4, 6, or 8 light emitting elements
  • the second light emitting unit may be provided with 12, 10, or 8 light emitting elements accordingly.
  • the total number of the light-emitting elements in the first and second light-emitting units may not be 16 but other numbers, such as 14 or 18.
  • the first light emitting unit includes a light emitting element 105 on each side of the backlight module.
  • the distance between the light emitting element 105 of the first light emitting unit and the display module 11 is smaller than the distance between the light emitting element 105 of the second light emitting unit and the display module 11.
  • a blocking portion (or “blocking wall”) 1032 may be provided between two adjacent second light-emitting unit light-emitting elements 105 to enhance the intensity of the backlight module. No blocking portion is provided between the adjacent first light-emitting unit light-emitting element 105 and the second light-emitting unit light-emitting element 105 and between the two first light-emitting unit light-emitting elements 105.
  • the distance between the light-emitting elements 105 may be different. Specifically, the distance d3 between the outermost light-emitting element 105 and an adjacent light-emitting element 105 may be smaller than the distance d4 between the remaining light-emitting elements 105. .
  • a blocking portion 1031 may be provided at a corner portion of the backlight module adjacent to the light emitting element 105 of the first light emitting unit. This can prevent light leakage from the corners of the backlight module, thereby further improving the problem of darkening the corners.
  • the first light emitting unit may also include a plurality of, for example, two, three or four light emitting elements 105 on each side of the backlight module.
  • the light-emitting element of the first light-emitting unit adjacent to the second light-emitting unit to the outermost light-emitting element of the first light-emitting unit on the same side as the light-emitting element of the first light-emitting unit, they are each associated with the display mode of the display screen.
  • the distance between groups can be equal or they can be changed in a decreasing manner.
  • the first light emitting unit includes a plurality of light emitting elements 105 on each side of the backlight module, from the light emitting element 105 of the second light emitting unit adjacent to the first light emitting unit to the second light emitting unit
  • the distance between two adjacent light-emitting elements 105 of the light-emitting element 105 on the outermost side of the first light-emitting unit on the same side of the light-emitting element 105 of the light-emitting unit may be the same or may be changed in a decreasing manner.
  • inside refers to a direction generally along the arrangement of the light emitting elements of the backlight module toward the middle or inside of the backlight module
  • outside refers to an arrangement substantially along the light emitting elements. Orientation faces away from the middle or inner direction of the backlight module.
  • FIG. 5 and 6 respectively illustrate two exemplary light paths of the backlight module in FIG. 3. It can be seen from FIG. 5 and FIG. 6 that in the area where the backlight module is located, the light of the two light paths is relatively uniform.
  • the mobile phone module has a rounded corner design on the side close to the light emitting element
  • at least a part of the light guide plate (for example, a corner portion) is made to have a substantially "C" shape, which makes the reflection angle of the incident light larger.
  • the reflected light is approximately parallel to the long side of the area where the display module is located. Therefore, compared to the normal light guide plate, the light at the corners is relatively sparse.
  • the light guide plate in FIG. 6 is partially optimized, so that the light is guided more toward the middle and the interior of the display module, and the light at the two corners of the backlight is more uniform, which can better improve the corner darkening.
  • FIG. 8 a comparison of reflected light before and after partial processing of the light guide plate is more clearly shown.
  • FIG. 7 schematically illustrates details of the light guide plate partially optimized in FIG. 6.
  • the light guide plate has a zigzag microstructure design, which can reduce the reflection angle of incident light and increase the light density at the corners.
  • a conventional 3004 packaged LED can be used to avoid disadvantages such as high cost, high power consumption, and high heat generation of small packaged LEDs such as 1803.
  • the two outermost LEDs can be arranged closer to the display module area, and there can be no blocking portion between the adjacent LEDs, and a blocking portion (plastic frame wall) between the remaining LEDs, thereby increasing the number of LEDs. Increased from 15 to 16 to meet the backlight brightness requirements.
  • the shape of the plastic frame and the light guide plate in the backlight module can be changed, a blocking portion (corner wall) can be provided at the corner of the mobile phone module, and a part of the light guide plate can be optimized to avoid corners. Light leaks at the corners to improve dark corners.
  • this embodiment can increase the strength of the backlight structure and avoid the shortage of LED flexible circuit boards and darkening of the two corners in the reliability verification; compared with 15 The LED has a retaining wall design.
  • This embodiment can increase the brightness of the backlight, reduce the distance between the outermost LED and the display module area, improve the darkening of the two corners, and improve the display quality.

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  • Signal Processing (AREA)
  • Planar Illumination Modules (AREA)

Abstract

本公开涉及一种用于显示屏的背光模组，所述背光模组包括位于该背光模组两侧的第一发光单元和所述两侧的第一发光单元之间的第二发光单元，所述第一发光单元和第二发光单元均包括多个发光元件，其中，所述第一发光单元的发光元件与显示屏的显示模组之间的距离小于所述第二发光单元的发光元件与显示屏的显示模组之间的距离。本公开还涉及包括该背光模组的显示屏，以及涉及包括该显示屏的显示装置。

Description

背光模组以及包括该背光模组的显示装置
相关申请的交叉引用
本申请要求于2018年5月31日递交的中国专利申请第201810547378.1号的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。
技术领域
本公开实例涉及显示技术领域，尤其涉及背光源技术领域。
背景技术
当前窄边框手机例如全面屏手机是手机发展的一个重要趋势，为了提高手机的屏占比，手机模组的边框越来越窄，而且背光模组的角部设计为圆角形式，因此手机模组存在两角发暗等显示问题，影响用户体验。
此外，由于全面屏手机模组显示比例为18:9或更高，导致手机模组“较窄较长”，因此限制了背光模组发光元件(例如3004封装LED)的数量，存在亮度不足的风险。如果要保证3004封装LED的数量，则在胶框中在这些LED之间无法设置挡墙，从而强度较差。例如，如图1和图2所示，背光模组1’包括16个3004封装LED，其中LED均匀排布，相邻的LED之间的间距(即d3’)相等且尺寸较小，无法设置挡墙；LED柔性线路板与胶框的粘贴面积较小，存在强度风险；此外，位于背光模组的两个角部处的胶框厚度(即d1’)较小，因此胶框的成型难度较大且无法设置挡墙，导致两个角部处的漏光风险较大。
另外，如果采用1803封装LED等较小封装的发光元件来解决3004封装LED数量受限的问题，则伴随而来的是成本增加、发热严重等不足等新的问题。
因此，需要一种改进的背光模组，该背光模组能够克服以上显示问题中的至少一者，同时也不导致诸如成本和发热等方面的缺点。
发明内容
为实现上述目的，本公开提供一种用于显示屏的背光模组，所述背光模组包括位于该背光模组两侧的第一发光单元和所述两侧的第一发光单元之间的第二发光单元，所述第一发光单元和第二发光单元均包括多个发光元件，其中，所述第一发光单元的发光元件与显示屏的显示模组之间的距离小于所述第二发光单元的发光元件与显示屏的显示模组之间的距离。
所述第一发光单元在所述背光模组的每一侧可以包括多个发光元件，从与所述第二发光单元相邻接的第一发光单元的发光元件至与该第一发光单元的发光元件同侧的第一发光单元最外侧的发光元件，各个发光元件与显示屏的显示模组之间的距离可以相等或递减。
由此能够改善手机模组的角部发暗的问题，提升显示亮度。
相互邻接的第一发光单元的发光元件与第二发光单元的发光元件之间的间距可以小于相互邻接的两个第二发光单元的发光元件之间的间距。更具体地，所述第一发光单元在所述背光模组的每一侧可以包括多个发光元件，从与所述第一发光单元相邻接的第二发光单元的发光元件至与该第二发光单元的发光元件同侧的第一发光单元最外侧的发光元件，相邻的两个发光元件之间的距离相等或者递减。由此可以减少手机模组占用的空间，使得有可能在较窄的全面屏手机边框中布置足够数量的常规发光元件，从而能够通过常规发光元件确保显示亮度。
相邻的两个第二发光单元的发光元件之间可以设有阻挡部，在相邻的第一发光单元的发光元件与第二发光单元的发光元件之间以及两个第一发光单元的发光元件之间未设有阻挡部。由此能增强背光模组的强度。
此外，在所述背光模组的角部的、邻近所述第一发光单元的发光元件的位置处设有阻挡部。由于最外侧发光元件与显示模组之间的距离减小，因此为保留阻挡部(或称为“挡墙”)赢得空间。由此能够防止手机模组的角部漏光，进一步改善了角部发暗的问题。
背光模组还可以包括导光板，所述导光板的用于反射光线的一侧可以 形成有微结构以减小入射光线的反射角。由此能够使得两角光线更加均匀，进一步改善手机模组的角部发暗的问题。
导光板的用于反射光线的一侧可以具有锯齿状结构。由此能够减小入射光线的反射角，增加手机模组的角部光线密度。
根据本公开的第二方面，还提供一种显示屏，所述显示屏包括显示模组以及前述的背光模组。由此能够实现使用这种显示屏的窄边框手机例如全面屏手机的良好显示。
根据本公开的第三方面，还提供一种显示装置，所述显示装置包括前述的显示屏。
附图说明
下面参照附图详细说明本公开的具体实施例，其中：
图1是一种窄边框手机模组的局部示意性剖视图；
图2是图1所示手机模组的细节放大示意图；
图3是包括根据本公开一个具体实施例的背光模组的手机模组的局部示意性剖视图；
图4是图3所示手机模组的细节放大示意图；
图5是图3中的背光模组的一个示例性光路的示意图；
图6是图3中的背光模组的另一个示例性光路的示意图，其中导光板被局部优化；
图7是图6所示的被局部优化的导光板的细节放大示意图；以及
图8是图5和图6所示的两个示例性光路的对比示意图。
附图标记列表
1，1’    手机模组
11，11’  显示模组
10，10’  背光模组
103       胶框
1031      阻挡部
1032      阻挡部
104       导光板
105       发光元件
106       柔性线路板
d1        胶框厚度
d2        第一间距
d3        第二间距
d4        第三间距
具体实施方式
本公开提供了一种适合用于窄边框手机例如全面屏手机的背光模组。通过改进背光模组中胶框和/或导光板的形状以及改进发光元件的布置，例如最外侧两个发光元件靠近显示区，且与邻近的发光元件之间不设置挡墙，其余发光元件之间设置挡墙，使得有可能在窄边框手机的背光模组中使用常规发光元件如3004封装LED，从而在增加发光元件的数量、提升背光模组的亮度的同时，还能增强背光模组的强度，改善角部发暗，从而提升手机模组的显示品质。
下面以6.0英寸手机模组为例，说明根据本公开的背光模组的一个具体实施例。
图3是手机模组的局部示意性剖视图，该手机模组1包括根据本公开一个具体实施例的背光模组。在图3中，部分地示出的手机模组1的背光模组可以使用足够多的常规发光元件，如16个3004封装LED，以提升模组亮度，改善两角发暗，增加背光强度。
图4是图3所示的手机模组1的局部放大示意图。如图4所示，手机模组1包括背光模组10和显示模组11，其中，背光模组10可以包括胶框103、导光板104、第一发光单元、第二发光单元和柔性线路板106等部分。
第一发光单元和第二发光单元可以分别包括多个发光元件105。在图3 所示的实施例中，第一发光单元包括2个发光元件105，第二发光单元包括14个发光元件105。
本领域技术人员也可以容易地设想，在各发光单元中可以设置其它数量的发光元件105。例如，第一发光单元可以设有4、6或8个发光元件，而第二发光单元可以相应地设有12、10或8个发光元件。当然，第一和第二发光单元中发光元件的总数也可以不是16个，而是其它数量，例如14个或18个。
根据图3所示的实施例，第一发光单元在背光模组的每一侧包括1个发光元件105。第一发光单元的发光元件105与显示模组11之间的距离小于第二发光单元的发光元件105与显示模组11之间的距离。
在相邻的两个第二发光单元发光元件105之间可以设置阻挡部(或称为“挡墙”)1032，从而增强背光模组的强度。而在相邻的第一发光单元发光元件105与第二发光单元发光元件105之间以及两个第一发光单元发光元件105之间未设有阻挡部。
如图4所示，发光元件105之间的间距可以不同，具体而言，位于最外侧的发光元件105与相邻的发光元件105之间的间距d3可以小于其余发光元件105之间的间距d4。
由于最外侧发光元件与显示模组之间的距离减小，因此可以在背光模组的角部的、邻近第一发光单元的发光元件105的位置处设有阻挡部1031。由此能够防止背光模组的角部漏光，从而进一步改善了角部发暗的问题。
根据另外的未示出的实施例，第一发光单元在背光模组的每一侧也可以包括多个、例如2、3或4个发光元件105。这样，从与第二发光单元相邻接的第一发光单元的发光元件至与该第一发光单元的发光元件同侧的第一发光单元最外侧的发光元件，它们各自与显示屏的显示模组之间的距离可以相等，也可以以递减的方式变化。
此外，还可以设想，当第一发光单元在背光模组的每一侧包括多个发光元件105时，从与第一发光单元相邻接的第二发光单元的发光元件105至与该第二发光单元的发光元件105同侧的第一发光单元最外侧的发光元 件105，相邻的两个发光元件105之间的距离可以相等，也可以以递减的方式变化。
在本文中，“内”是指大致沿着背光模组的发光元件的排列取向朝着背光模组的中间或内部的方向，与此相对地，“外”是指大致沿着发光元件的排列取向背离背光模组的中间或内部的方向。
图5和图6分别示出图3中的背光模组的两种示例性光路。从图5和图6可以看出，在背光模组所在的区域中，两种光路的光线都比较均匀。
然而，当手机模组在靠近发光元件的一侧具有圆角设计时，导光板的至少一部分(例如角部)被制作成具有大致“C”形的形状，这使得入射光线的反射角较大，并且反射光线近似于平行于显示模组所在区域的长边，因此，相对于正常导光板，角部光线比较稀疏。
为此，图6中的导光板被局部优化处理，使得光线更多地朝着显示模组中部和内部的方向被引导，背光两角光线也更加均匀，可以更好改善角部发暗，例如参见图8，其更清楚地示出了导光板局部处理前后反射光线的对比。
图7示意性地示出图6中被局部优化的导光板的细节。如图7所示，该导光板具有锯齿状的微结构设计，该设计可以减小入射光线的反射角，增加角部光线密度。
在本实施例中，可以使用常规3004封装LED，避免1803等小封装LED的成本较高及功耗高、发热大等不足。最外侧两个LED可以布置成更靠近显示模组区域，且与邻近LED之间可以不设置阻挡部，而其余LED之间设置阻挡部(胶框挡墙)，从而增加LED的数量，例如可以由15个增加到16个，满足背光亮度需求。
根据本实施例，可以改变背光模组中胶框及导光板的形状，在手机模组的角部设置阻挡部(角部挡墙)，并且可以对导光板的局部进行优化处理，从而避免角部漏光，改善角部发暗的问题。
因此，相比于图1所示的16个LED无挡墙设计，本实施例可以增加背光结构强度，避免信赖性验证中LED柔性线路板脱落及两角发暗等不足； 相比于15个LED有挡墙设计，本实施例可以提高背光亮度，减小最外侧LED至显示模组区域的距离，改善两角发暗，提高显示品质。

Claims (10)

  1. 一种用于显示屏的背光模组，所述背光模组包括位于该背光模组两侧的第一发光单元和所述两侧的第一发光单元之间的第二发光单元，所述第一发光单元和第二发光单元均包括多个发光元件，其中，所述第一发光单元的发光元件与显示屏的显示模组之间的距离小于所述第二发光单元的发光元件与显示屏的显示模组之间的距离。
  2. 据权利要求1所述的背光模组，其中，所述第一发光单元在所述背光模组的每一侧包括多个发光元件，从与所述第二发光单元相邻接的第一发光单元的发光元件至与该第一发光单元的发光元件同侧的第一发光单元最外侧的发光元件，各个发光元件与显示屏的显示模组之间的距离相等或递减。
  3. 据权利要求1所述的背光模组，其中，相互邻接的第一发光单元的发光元件与第二发光单元的发光元件之间的间距小于相互邻接的两个第二发光单元的发光元件之间的间距。
  4. 据权利要求3所述的背光模组，其中，所述第一发光单元在所述背光模组的每一侧包括多个发光元件，从与所述第一发光单元相邻接的第二发光单元的发光元件至与该第二发光单元的发光元件同侧的第一发光单元最外侧的发光元件，相邻的两个发光元件之间的距离相等或者递减。
  5. 据权利要求1至4中任一项所述的背光模组，其中，相邻的两个第二发光单元的发光元件之间设有阻挡部，在相邻的第一发光单元的发光元件与第二发光单元的发光元件之间以及两个第一发光单元的发光元件之间未设有阻挡部。
  6. 根据权利要求1至4中任一项所述的背光模组，其中，在所述背光模组的角部的、邻近所述第一发光单元的发光元件的位置处设有阻挡部。
  7. 根据权利要求1至4中任一项所述的背光模组，其中，所述背光模组还包括导光板，所述导光板的用于反射光线的一侧形成有微结构以减小入射光线的反射角。
  8. 根据权利要求7所述的背光模组，其中，所述导光板的用于反射光线的一侧具有锯齿状结构。
  9. 一种显示屏，所述显示屏包括显示模组以及根据权利要求1至8中任一项所述的背光模组。
  10. 一种显示装置，所述显示装置包括根据权利要求9所述的显示屏。
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