WO2024198397A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

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Publication number
WO2024198397A1
WO2024198397A1 PCT/CN2023/132824 CN2023132824W WO2024198397A1 WO 2024198397 A1 WO2024198397 A1 WO 2024198397A1 CN 2023132824 W CN2023132824 W CN 2023132824W WO 2024198397 A1 WO2024198397 A1 WO 2024198397A1
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WO
WIPO (PCT)
Prior art keywords
light
patterned structure
area
optical film
backlight module
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/132824
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English (en)
French (fr)
Inventor
孙农运
周政
宋岁忙
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Wuhan China Star Optoelectronics Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Technology Co Ltd
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Publication of WO2024198397A1 publication Critical patent/WO2024198397A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating 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
    • G09F9/35—Indicating 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 liquid crystals

Definitions

  • the present application relates to the field of display technology, and in particular to a backlight module and a display device.
  • the backlight module is one of the key components of liquid crystal display devices. Since liquid crystal itself does not emit light, the main function of the backlight module is to provide backlight for the liquid crystal panel. In addition to being used in LCD TVs and liquid crystal display devices, backlight modules can also be used in display devices that require backlight, such as digital photo frames, electronic paper, and mobile phones.
  • a backlight module generally includes a light source and multiple optical films.
  • the optical films are prone to wrinkles or fluctuations, thereby affecting the light output effect of the backlight module.
  • the embodiments of the present application provide a backlight module and a display device, which can provide a buffer for the deformation of the first diaphragm, reduce the probability of wrinkles or undulations of the first diaphragm, and improve the light output effect of the backlight module.
  • the embodiment of the present application provides a backlight module, which includes:
  • An optical film group arranged on the light-emitting side of the light-emitting component
  • the optical film set includes a light emitting area, a peripheral area adjacent to the light emitting area, and a first film, and the first film includes a first patterned structure disposed in the peripheral area.
  • an embodiment of the present application provides a display device, the display device comprises a backlight module and a display panel, and the display panel is arranged on the light emitting side of the backlight module;
  • the backlight module comprises:
  • An optical film group arranged on the light-emitting side of the light-emitting component
  • the optical film set includes a light emitting area, a peripheral area adjacent to the light emitting area, and a first film, and the first film includes a first patterned structure disposed in the peripheral area.
  • an embodiment of the present application provides a display device, the display device comprises a backlight module and a display panel, and the display panel is arranged on the light emitting side of the backlight module;
  • the backlight module comprises:
  • An optical film group arranged on the light-emitting side of the light-emitting component
  • the optical film set includes a light emitting area, a peripheral area adjacent to the light emitting area, and a first film, and the first film includes a first patterned structure disposed in the peripheral area;
  • the display device comprises a display area corresponding to the light exit area, and a first frame area and a second frame area adjacent to the display area and corresponding to the peripheral area;
  • the width of the first border area is greater than the width of the second border area, and the first patterned structure is disposed in the first border area.
  • FIG1 is a schematic diagram of a fixing structure of an optical film provided in the related art
  • FIG2 is a schematic diagram of another fixing structure of an optical film provided in the related art.
  • FIG3 is a schematic diagram of a structure of a backlight module provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the planar distribution of an optical film group provided in an embodiment of the present application.
  • FIG5 is a schematic structural diagram of a first patterned structure provided in an embodiment of the present application.
  • FIG6 is another schematic structural diagram of the first patterned structure provided in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a structure of a display device provided in an embodiment of the present application.
  • an optical film 1 is provided in the backlight module, and the optical film 1 is often fixed by a limiting post 2 and a fixing tape 3.
  • the limiting post 2 and the fixing tape 3 can be set on the same side of the optical film 1, as shown in Figure 1; or the limiting post 2 and the fixing tape 3 are located on different sides of the optical film 1, as shown in Figure 2; however, in the above-mentioned fixing method of the optical film 1, space needs to be reserved to provide a buffer for the deformation of the optical film 1.
  • the module needs to undergo high temperature testing and other steps in the manufacturing process, which will cause the optical film 1 to deform. Once the space reserved for the optical film 1 is insufficient, or the deformation of the optical film 1 is too large, it is easy to cause the optical film 1 to have undesirable phenomena such as undulations or wrinkles, thereby affecting the light output effect of the backlight module.
  • an embodiment of the present application provides a backlight module, which includes a light emitting component 10 and an optical film assembly 20 .
  • the optical film set further includes a light emitting area 101 , a peripheral area 102 adjacent to the light emitting area 101 , and a first film 21 .
  • the first film 21 includes a first patterned structure 211 disposed in the peripheral area 102 .
  • the embodiment of the present application sets a first patterned structure 211 in the peripheral area 102 corresponding to the first diaphragm 21, which can buffer the stress and deformation generated by the first diaphragm 21, so that the first diaphragm 21 will not produce ups and downs or wrinkles when shrinking or expanding, thereby improving the stability of the first diaphragm 21 and improving the yield and light output effect of the backlight module.
  • the first patterned structure includes a plurality of openings disposed in the first membrane.
  • the plurality of openings are distributed in an array, and the first patterned structure is in a grid shape;
  • the plurality of openings include a plurality of strip-shaped holes distributed in parallel, and the first patterned structure is in a wire-drawing shape.
  • the light exit area includes a first side extending along a first direction and a second side extending along a second direction, the first direction is different from the second direction, and the first patterned structure includes at least one first sub-portion and at least one second sub-portion;
  • the first sub-portion extends along the first direction and is disposed on a side of the first edge away from the light exiting area
  • the second sub-portion extends along the second direction and is disposed on a side of the second edge away from the light exiting area
  • the optical film set further includes a second film stacked with the first film, and the second film includes a second patterned structure disposed in the peripheral area.
  • an orthographic projection shape of the first patterned structure on the light-emitting component is the same as or different from an orthographic projection shape of the second patterned structure on the light-emitting component.
  • the first patterned structure and the second patterned structure are aligned along the thickness direction of the optical film set.
  • the light-emitting component includes a light guide plate arranged on one side of the optical film group, and a plurality of protrusions are arranged on the side of the light guide plate close to the optical film group.
  • the optical film group includes a plurality of fixing holes, at least one of the protrusions is inserted into one of the fixing holes, and the optical film group is fixedly arranged on the light guide plate.
  • the display device includes a display area corresponding to the light exit area, and a first frame area and a second frame area adjacent to the display area and corresponding to the peripheral area;
  • the width of the first border area is greater than the width of the second border area, and the first patterned structure is disposed in the first border area.
  • the backlight module includes a frame 30 , a light emitting component 10 disposed in the frame 30 , and an optical film group 20 disposed on the light emitting side of the light emitting component 10 .
  • the middle area of the frame 30 is concave to form a groove, and the light emitting component 10 and the optical film set 20 are both disposed in the groove.
  • the material of the frame 30 may include aluminum.
  • the light-emitting component 10 includes a reflective member 12 arranged at the bottom of the groove, and a light guide plate 11 arranged on the reflective member 12. It should be noted that the light-emitting component 10 in the embodiment of the present application also includes a light source, which is not shown in the figure, and the light source can be arranged on the side of the light guide plate 11, or on the bottom surface of the light guide plate 11, and the light emitted by the light source is adjusted by the light guide plate 11 and reflected by the reflective member 12, so that the light can be emitted along the opening direction of the groove, that is, the backlight module provided in the embodiment of the present application includes but is not limited to side-entry or direct-down backlight modes.
  • the optical film group 20 is arranged on the light-emitting side of the light-emitting component 10, that is, on the side of the opening of the light guide plate 11 close to the groove.
  • the optical film group 20 includes a light-emitting area 101 and a peripheral area 102 adjacent to the light-emitting area 101, wherein the optical film group 20 as a whole can be light-transmissive, but the light-emitting area 101 can effectively dim the light emitted by the light-emitting component 10 to improve the light-emitting effect, and the peripheral area 102 can be an area in the optical film group 20 for module fixing or limiting functions, such as requiring opening or adhesion.
  • the peripheral region 102 may be disposed around the light exiting region 101 .
  • the optical film group 20 may include multiple optical films.
  • the optical film group 20 includes a first film 21, and the first film 21 includes a first patterned structure 211 arranged in the peripheral area 102, which can buffer the stress and deformation generated by the first film 21, so that the first film 21 will not produce ups and downs or wrinkles when shrinking or expanding, thereby improving the stability of the first film 21 and improving the yield and light output effect of the backlight module.
  • the light exiting area 101 may include a first side 1011 extending along a first direction X, and a second side 1012 extending along a second direction Y, and the first direction X and the second direction Y are different.
  • the optical film assembly 20 is a rectangle, and the light emitting area 101 is also a rectangle, then the light emitting area 101 includes two opposite and parallel first sides 1011 and two opposite and parallel second sides 1012, and the first direction X is perpendicular to the second direction Y.
  • the first patterned structure 211 may include a first sub-portion 2111 extending along the first direction X and arranged on the side of the first edge 1011 away from the light exit area 101, and a second sub-portion 2112 extending along the second direction Y and arranged on the side of the second edge 1012 away from the light exit area 101; the first sub-portion 2111 can buffer the stress and deformation of the first diaphragm 21 along the second direction Y, and the second sub-portion 2112 can buffer the stress and deformation of the first diaphragm 21 along the first direction X, so that the first diaphragm 21 will not produce undulations or wrinkles due to deformation in the horizontal and vertical directions, thereby effectively improving the yield and stability of the first diaphragm 21.
  • the number of the first sub-sections 2111 and the number of the second sub-sections 2112 are both at least one.
  • the first sub-sections 2111 and the second sub-sections 2112 intersect at the corner of the first diaphragm 21;
  • the two first sub-sections 2111 can be located on the side of the same first side 1011 away from the light exit area 101, or respectively located on the two first sides 1011, each away from the light exit area 101.
  • the two second sub-portions 2112 can be located on the side of the same second edge 1012 away from the light exit area 101, or are respectively located on the side of the two second edges 1012 away from the light exit area 101; when the two first sub-portions 2111 are respectively located on the side of the two first edges 1011 away from the light exit area 101, and the two second sub-portions 2112 are respectively located on the side of the two second edges 1012 away from the light exit area 101, the two first sub-portions 2111 and the two second sub-portions 2112 can be connected to be arranged around the light exit area 101.
  • the first patterned structure 211 may be a plurality of openings 2110 disposed in the first film 21 , and the depth of the openings 2110 may be less than or equal to the thickness of the first film 21 .
  • the multiple openings 2110 include a plurality of parallel distributed strip holes, and the extension direction of the strip holes is perpendicular to the direction of the corresponding first edge 1011 or the second edge 1012.
  • it is a portion of the first patterned structure 211 at the second sub-portion 2112, wherein the extension direction of the opening 2110 is arranged perpendicular to the second direction Y, so that the first patterned structure 211 is in a brushed shape, and the extension direction of the brushed is arranged perpendicular to the second direction Y.
  • the plurality of openings 2110 may be arranged in an array, and the shape of the openings 2110 may be circular, polygonal, etc., so that the first patterned structure is in a grid shape, as shown in FIG. 6 .
  • the optical film set 20 may further include a second film 22 and a third film 23 stacked with the first film 21 .
  • the second film 22 includes a second patterned structure 221 disposed in the peripheral region 102
  • the third film 23 includes a third patterned structure 231 disposed in the peripheral region 102 .
  • the structure, position and setting method of the second patterned structure 221 and the third patterned structure 231 can be set with reference to the structure, position and setting method of the first patterned structure 211, but the orthographic projection shape of the first patterned structure 211 on the light-emitting component 10, the orthographic projection shape of the second patterned structure 221 on the light-emitting component 10 and the orthographic projection shape of the third patterned structure 231 on the light-emitting component 10 can be independently selected to be the same or different, for example, they can be grid-shaped or brushed.
  • first patterned structure 211, the second patterned structure 221 and the third patterned structure 231 are aligned along the thickness direction of the optical film group 20; or, the first patterned structure 211, the second patterned structure 221 and the third patterned structure 231 are partially overlapped along the thickness direction of the optical film group 20, that is, partially staggered; or the first patterned structure 211, the second patterned structure 221 and the third patterned structure 231 are completely staggered along the thickness direction of the optical film group 20.
  • the first film 21, the second film 22 and the third film 23 can be selected as one of the optical films such as a diffuser, a prism, a brightness enhancement film, and the first film 21, the second film 22 and the third film 23 are different optical films, for example, the first film 21 is a brightness enhancement film, the second film 22 is a prism, and the third film 23 is a diffuser, which is not limited here; in addition, the optical film group 20 can also include a larger number of optical films, such as a fourth film, a fifth film and a sixth film, and a patterned structure can be set in any optical film to buffer stress and deformation and avoid fluctuations and wrinkles in the optical film.
  • a patterned structure is provided in the film within the optical film group 20 to buffer the stress and deformation generated in the film, thereby preventing the film from undulating or wrinkling. Therefore, in the embodiment of the present application, the optical film group 20 can be completely fixed, thereby improving the stability of the optical film group 20 compared to the related art, and preventing the optical film group 20 from shifting or oscillating due to partial unfixed positions, thereby affecting the light output effect of the backlight module.
  • a plurality of protrusions 111 are provided on one side of the light guide plate 11 close to the optical film group 20 , the optical film group 20 includes a plurality of fixing holes, at least one protrusion 111 is inserted into a fixing hole, and the optical film group 20 is fixedly disposed on the light guide plate 11 .
  • the fixing hole may penetrate the third diaphragm 23 , the second diaphragm 22 and at least a portion of the first diaphragm 21 , so that the protrusion 111 can play a role in fixing and limiting the first diaphragm 21 , the second diaphragm 22 and the third diaphragm 23 .
  • the fixing holes can be arranged at the four corners of the optical film group 20, or at the four sides of the optical film group 20, so as to completely fix the optical film group 20, and the number of fixing holes at each corner or each side is not limited and can be selected according to actual needs.
  • the embodiment of the present application sets a first patterned structure 211 in the peripheral area 102 corresponding to the first diaphragm 21, thereby having a buffering effect on the stress and deformation generated by the first diaphragm 21, so that the first diaphragm 21 will not produce ups and downs or wrinkles when shrinking or expanding, thereby improving the stability of the first diaphragm 21, and improving the yield rate and light output effect of the backlight module;
  • the optical diaphragm group 20 can be completely fixed, thereby improving the stability of the optical diaphragm group 20 compared to the related art, and avoiding the optical diaphragm group 20 from shifting or oscillating due to the fact that some positions are not fixed, thereby affecting the light output effect of the backlight module.
  • an embodiment of the present application provides a display device, which includes the backlight module described in the above embodiment and a display panel 40 , and the display panel 40 is disposed on the light emitting side of the backlight module.
  • the display device also includes a plastic frame 51 and a cover plate 62, wherein the plastic frame 51 is arranged in the frame body 30 and is located on the opening side of the optical film group 20 close to the groove, the display panel 40 is placed on the plastic frame 51, and a foam 52 is arranged between the display panel 40 and the plastic frame 51; wherein the display panel 40 includes a lower polarizer 41, an array substrate 42, a color film substrate 43 and an upper polarizer 44 which are sequentially arranged on the side of the foam 52 away from the optical film group 20.
  • the cover plate 62 is disposed on a side of the display panel 40 away from the backlight module, and the cover plate 62 is bonded to the display panel 40 via an optical adhesive layer 61 , and is bonded to the frame 30 of the backlight module via a double-sided adhesive layer 53 .
  • the display device includes a display area corresponding to the light emitting area 101 of the optical film group 20, and a first border area and a second border area adjacent to the display area and corresponding to the peripheral area 102; it can be understood that the display area needs to overlap with the light emitting area 101 or be located within the light emitting area 101 to improve the light emitting effect of the entire display area of the display device.
  • the width of the first frame area is greater than the width of the second frame area, and the first patterned structure 211, the second patterned structure 221, and the third patterned structure 231 are all disposed in the first frame area. That is, the embodiment of the present application can align the side of the optical film group 20 with the patterned structure to the wider frame of the display device, so as to avoid increasing the frame width of the display device in order to accommodate the optical film group 20 with the first patterned structure 211, the second patterned structure 221, and the third patterned structure 231.
  • the display device can be a display device such as a mobile phone, a television, a computer, and a tablet.

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  • Physics & Mathematics (AREA)
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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
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  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

一种背光模组及显示装置。背光模组包括发光组件（10）以及光学膜片组（20）；光学膜片组（20）设置于发光组件（10）的出光侧；其中，光学膜片组（20）包括出光区（101）、邻接于出光区（101）的外围区（102）、以及第一膜片（21），且第一膜片（21）包括设置于外围区（102）内的第一图案化结构（211）。

Description

背光模组及显示装置 技术领域
本申请涉及显示技术领域，尤其涉及一种背光模组及显示装置。
 背景技术
背光模组为液晶显示装置的关键零组件之一，由于液晶本身不发光，背光模组的主要功能在于为液晶面板提供背光。背光模组除了应用在液晶电视机、液晶显示器件之外，还可以应用在数码相框、电子纸、手机等需要背光的显示装置中。
背光模组一般包括光源以及多个光学膜片，当多个光学膜片装配于背光模组中时，由于组装不良、受热、震动、以及模组测试过程，容易导致光学膜片发生褶皱或者起伏，进而影响背光模组的出光效果。
 发明概述
本申请实施例提供一种背光模组及显示装置，能够对第一膜片的形变提供缓冲，降低第一膜片发生褶皱或者起伏的概率，提高背光模组的出光效果。
本申请实施例提供一种背光模组，其包括：
发光组件；
光学膜片组，设置于所述发光组件的出光侧；
其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构。
根据本申请的上述目的，本申请实施例提供一种显示装置，所述显示装置包括背光模组、以及显示面板，且所述显示面板设置于所述背光模组的出光侧；
所述背光模组包括：
包括：
发光组件；
光学膜片组，设置于所述发光组件的出光侧；
其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构。
根据本申请的上述目的，本申请实施例提供一种显示装置，所述显示装置包括背光模组、以及显示面板，且所述显示面板设置于所述背光模组的出光侧；
所述背光模组包括：
包括：
发光组件；
光学膜片组，设置于所述发光组件的出光侧；
其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构；
所述显示装置包括与所述出光区相对应的显示区、以及邻接于所述显示区并与所述外围区相对应的第一边框区和第二边框区；
其中，所述第一边框区的宽度大于所述第二边框区的宽度，所述第一图案化结构设置于所述第一边框区内。
 附图说明
图1为相关技术中提供的一种光学膜片的固定结构示意图；
图2为相关技术中提供的另一种光学膜片的固定结构示意图；
图3为本申请实施例提供的背光模组的一种结构示意图；
图4为本申请实施例提供的光学膜片组的平面分布示意图；
图5为本申请实施例提供的第一图案化结构的一种结构示意图；
图6为本申请实施例提供的第一图案化结构的另一种结构示意图；
图7为本申请实施例提供的显示装置的一种结构示意图。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。此外，本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参照图1和图2，在相关技术中，背光模组中设置有光学膜片1，常通过限位柱2以及固定胶带3对光学膜片1进行固定，例如可将限位柱2和固定胶带3设置于光学膜片1的同一边，如图1所示；或者限位柱2和固定胶带3位于光学膜片1的不同边，如图2所示；但是在上述光学膜片1的固定方式中，皆需要预留出空间，以对光学膜片1的形变量提供缓冲，例如模组在制程中需要经过高温测试等步骤，都会使得光学膜片1发生形变，而一旦对光学膜片1预留的空间不足，或者光学膜片1的形变量过大时，容易使得光学膜片1产生起伏或者褶皱等不良现象，进而影响背光模组的出光效果。
请参照图2，本申请实施例提供一种背光模组，该背光模组包括发光组件10以及光学膜片组20。
进一步地，该光学膜片组还包括出光区101、邻接于出光区101的外围区102、以及第一膜片21，第一膜片21包括设置于外围区102内的第一图案化结构211。
在实施应用过程中，本申请实施例通过在第一膜片21对应外围区102内设置第一图案化结构211，进而可以对第一膜片21产生的应力以及形变起到缓冲效果，使得第一膜片21在收缩或者膨胀时，不会产生起伏或者褶皱，提高了第一膜片21的稳定性，提高了背光模组的良品率和出光效果。
在本申请的一种实施例中，所述第一图案化结构包括设置于所述第一膜片中的多个开孔。
在本申请的一种实施例中，多个所述开孔呈阵列分布，且所述第一图案化结构呈网格状；
或者，多个所述开孔包括多个平行分布的条形孔，且所述第一图案化结构呈拉丝状。
在本申请的一种实施例中，所述出光区包括沿第一方向延伸的第一边、以及沿第二方向延伸的第二边，所述第一方向与所述第二方向相异，所述第一图案化结构包括至少一个第一子部和至少一个第二子部；
其中，所述第一子部沿所述第一方向延伸并设置于所述第一边远离所述出光区的一侧，所述第二子部沿所述第二方向延伸并设置于所述第二边远离所述出光区的一侧。
在本申请的一种实施例中，所述光学膜片组还包括与所述第一膜片层叠设置的第二膜片，所述第二膜片包括设置于所述外围区内的第二图案化结构。
在本申请的一种实施例中，所述第一图案化结构在所述发光组件上的正投影形状与所述第二图案化结构在所述发光组件上的正投影形状相同或不同。
在本申请的一种实施例中，所述第一图案化结构与所述第二图案化结构沿所述光学膜片组的厚度方向上对位设置。
在本申请的一种实施例中，所述发光组件包括设置于所述光学膜片组一侧的导光板，所述导光板靠近所述光学膜片组的一侧设置有多个凸起，所述光学膜片组包括多个固定孔，至少一个所述凸起插入一个所述固定孔内，且所述光学膜片组固定设置于所述导光板上。
在本申请的一种实施例中，所述显示装置包括与所述出光区相对应的显示区、以及邻接于所述显示区并与所述外围区相对应的第一边框区和第二边框区；
其中，所述第一边框区的宽度大于所述第二边框区的宽度，所述第一图案化结构设置于所述第一边框区内。
具体地，请继续参照图3，在本申请实施例中，该背光模组包括框体30、设置于框体30内的发光组件10、设置于发光组件10出光侧的光学膜片组20。
具体地，框体30的中间区域内凹，以形成一个凹槽，而发光组件10以及光学膜片组20皆设置于凹槽内。该框体30的材料可以包括铝材。
发光组件10包括设置于凹槽底部的反射件12、以及设置于反射件12上的导光板11，需要说明的是，本申请实施例中的发光组件10还包括光源，图中并未示出，且光源可以设置在导光板11的侧面，也可以设置在导光板11的底面，且光源发出的光线经过导光板11的调整以及反射件12的反射，使得光线可以沿着凹槽的开口方向射出，即本申请实施例提供的背光模组包括但不限于侧入式或者直下式的背光模式。
光学膜片组20设置于发光组件10的出光侧，即设置于导光板11靠近凹槽的开口的一侧。光学膜片组20包括出光区101以及邻接于出光区101的外围区102，其中，光学膜片组20整体都可以进行透光，但是，其出光区101可以对发光组件10发出的光线进行有效调光，以提高出光效果，而外围区102可以为光学膜片组20中进行模组固定、或者限位等功能的区域，例如需要进行开孔或者粘附。
在一种实施例中，外围区102可以围绕出光区101设置。
其中，光学膜片组20可以包括多个光学膜片，在本申请实施例中，光学膜片组20包括第一膜片21，且第一膜片21包括设置于外围区102内的第一图案化结构211，进而可以对第一膜片21产生的应力以及形变起到缓冲效果，使得第一膜片21在收缩或者膨胀时，不会产生起伏或者褶皱，提高了第一膜片21的稳定性，提高了背光模组的良品率和出光效果。
进一步地，出光区101可以包括沿第一方向X延伸的第一边1011、以及沿第二方向Y延伸的第二边1012，且第一方向X与第二方向Y相异。
在一种实施例中，请参照图3和图4，光学膜片组20为长方形，而出光区101也为长方形，则出光区101包括相对且平行的两个第一边1011、以及相对且平行的两个第二边1012，且第一方向X与第二方向Y相垂直。
其中，第一图案化结构211可以包括沿第一方向X延伸并设置于第一边1011远离出光区101一侧的第一子部2111、以及沿第二方向Y延伸并设置于第二边1012远离出光区101一侧的第二子部2112；第一子部2111可以对第一膜片21沿第二方向Y上的应力和形变产生缓冲作用，而第二子部2112可以对第一膜片21沿第一方向X上的应力和形变产生缓冲作用，进而使得第一膜片21沿横向和纵向上皆不会因形变而产生起伏或者褶皱，有效提高了第一膜片21的良品率和稳定性。
需要说明的是，第一子部2111的数量和第二子部2112的数量皆为至少一个，当第一子部2111和第二子部2112的数量皆为一个时，则第一子部2111和第二子部2112在第一膜片21的拐角处相交叉；当第一子部2111的数量以及第二子部2112的数量皆为两个时，则两个第一子部2111可以位于同一个第一边1011远离出光区101的一侧，或者分别位于两个第一边1011各自远离出光区101的一侧，同理，两个第二子部2112可以位于同一个第二边1012远离出光区101的一侧，或者分别位于两个第二边1012各自远离出光区101的一侧；当两个第一子部2111分别位于两个第一边1011各自远离出光区101的一侧、以及两个第二子部2112分别位于两个第二边1012各自远离出光区101的一侧时，可两个第一子部2111和两个第二子部2112相连接以围绕出光区101设置。
进一步地，请参照图3、图4、图5以及图6，第一图案化结构211可以为设置于第一膜片21中的多个开孔2110，且开孔2110的深度可以小于或等于第一膜片21的厚度。
在一种实施例中，多个开孔2110包括多个平行分布的条形孔，且条形孔的延伸方向为垂直于对应的第一边1011或者第二边1012的方向，例如图5中，为第一图案化结构211在第二子部2112处的部分，其中开孔2110的延伸方向垂直于第二方向Y设置，使得第一图案化结构211呈拉丝状，且拉丝的延伸方向垂直于第二方向Y设置。
在另一种实施例中，多个开孔2110可以呈阵列排布，且开孔2110的形状可以为圆形、多边形等，以使得第一图案化结构呈网格状，如图6所示。
进一步地，请继续参照图3，光学膜片组20还可以包括与第一膜片21层叠设置的第二膜片22以及第三膜片23。
在本申请实施例中，第二膜片22包括设置于外围区102内的第二图案化结构221，第三膜片23包括设置于外围区102内的第三图案化结构231。
可以理解的是，第二图案化结构221和第三图案化结构231的结构、位置以及设置方式皆可以参照第一图案化结构211的结构、位置和设置方式进行设置，但是，第一图案化结构211在发光组件10上的正投影形状、第二图案化结构221在发光组件10上的正投影形状以及第三图案化结构231在发光组件10上的正投影形状可以各自独立选择为相同或者不同，例如可以为网格状或者拉丝状。
此外，第一图案化结构211、第二图案化结构221以及第三图案化结构231沿光学膜片组20的厚度方向上对位设置；或者，第一图案化结构211、第二图案化结构221以及第三图案化结构231沿光学膜片组20的厚度方向上部分重叠设置，即部分错开设置；或者第一图案化结构211、第二图案化结构221以及第三图案化结构231沿光学膜片组20的厚度方向上完全错开设置。
需要说明的是，第一膜片21、第二膜片22以及第三膜片23可以选择为扩散片、棱镜片、增亮膜等光学膜片中的一者，且第一膜片21、第二膜片22以及第三膜片23分别为不同的光学膜片，例如第一膜片21为增亮膜，第二膜片22为棱镜片，第三膜片23为扩散片，在此不作限定；此外，光学膜片组20还可以包括数量更多的光学膜片，例如第四膜片、第五膜片以及第六膜片等，且任意光学膜片中皆可设置图案化结构，以对应力和形变产生缓冲作用，避免光学膜片产生起伏和褶皱。
进一步地，由于本申请实施例中通过在光学膜片组20内的膜片中设置图案化结构，以对膜片中产生的应力和形变进行缓冲，可以避免膜片发生起伏或者褶皱，进而本申请实施例中可以对光学膜片组20进行完全固定，进而相对于相关技术中而言，可以提高光学膜片组20的稳定性，避免光学膜片组20由于部分位置未固定而发生偏移或者振荡，而影响背光模组的出光效果。
在一种实施例中，导光板11靠近光学膜片组20的一侧设置有多个凸起111，光学膜片组20包括多个固定孔，至少一个凸起111插入一个固定孔内，且光学膜片组20固定设置于导光板11上。
其中，固定孔可以贯穿第三膜片23、第二膜片22以及至少部分第一膜片21，以使得凸起111可以对第一膜片21、第二膜片22以及第三膜片23皆起到固定限位作用。
而固定孔的位置可以设置于光学膜片组20的四个顶角处，或者设置于光学膜片组20的四条边上，以对光学膜片组20进行完全固定，且各顶角或者各边上固定孔的数量不作限定，可以根据实际需求进行选择。
承上，本申请实施例通过在第一膜片21对应外围区102内设置第一图案化结构211，进而可以对第一膜片21产生的应力以及形变起到缓冲效果，使得第一膜片21在收缩或者膨胀时，不会产生起伏或者褶皱，提高了第一膜片21的稳定性，提高了背光模组的良品率和出光效果；进一步地，本申请实施例中可以对光学膜片组20进行完全固定，进而相对于相关技术中而言，可以提高光学膜片组20的稳定性，避免光学膜片组20由于部分位置未固定而发生偏移或者振荡，而影响背光模组的出光效果。
另外，请参照图7，本申请实施例提供一种显示装置，该显示装置包括上述实施例中所述的背光模组、以及显示面板40，且显示面板40设置于背光模组的出光侧。
具体地，该显示装置还包括胶框51、以及盖板62，其中，胶框51设置于框体30内，且位于光学膜片组20靠近凹槽的开口一侧，显示面板40搁置于胶框51上，且显示面板40和胶框51之间设置泡棉52；其中，显示面板40包括依次设置于泡棉52远离光学膜片组20一侧的下偏光片41、阵列基板42、彩膜基板43以及上偏光片44。
盖板62设置于显示面板40远离背光模组的一侧，且盖板62通过光学胶层61与显示面板40相贴合，并通过双面胶层53与背光模组的框体30相贴合。
在一种实施例中，该显示装置包括与光学膜片组20的出光区101相对应的显示区、以及邻接于显示区并与外围区102相对应的第一边框区和第二边框区；可以理解的是，显示区需要与出光区101相重合或者位于出光区101内，以提高显示装置的整个显示区的出光效果。
其中，第一边框区的宽度大于第二边框区的宽度，第一图案化结构211、第二图案化结构221以及第三图案化结构231皆设置于第一边框区内。即本申请实施例可以将光学膜片组20中设置于有图案化结构的侧边对应显示装置中宽度较宽的边框进行对位设置，可以避免显示装置为了容置设有第一图案化结构211、第二图案化结构221以及第三图案化结构231的光学膜片组20而增加边框宽度。
该显示装置可以是手机、电视、电脑以及平板等显示设备。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其他实施例的相关描述。
以上对本申请实施例所提供的一种背光模组及显示装置进行了详细介绍，本文中应用了具体个例对本申请的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本申请的技术方案及其核心思想；本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例的技术方案的范围。

Claims (20)

  1. 一种背光模组，其包括：
    发光组件；
    光学膜片组，设置于所述发光组件的出光侧；
    其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构。
  2. 根据权利要求1所述的背光模组，其中，所述第一图案化结构包括设置于所述第一膜片中的多个开孔。
  3. 根据权利要求2所述的背光模组，其中，多个所述开孔呈阵列分布，且所述第一图案化结构呈网格状；
    或者，多个所述开孔包括多个平行分布的条形孔，且所述第一图案化结构呈拉丝状。
  4. 根据权利要求1所述的背光模组，其中，所述出光区包括沿第一方向延伸的第一边、以及沿第二方向延伸的第二边，所述第一方向与所述第二方向相异，所述第一图案化结构包括至少一个第一子部和至少一个第二子部；
    其中，所述第一子部沿所述第一方向延伸并设置于所述第一边远离所述出光区的一侧，所述第二子部沿所述第二方向延伸并设置于所述第二边远离所述出光区的一侧。
  5. 根据权利要求1所述的背光模组，其中，所述光学膜片组还包括与所述第一膜片层叠设置的第二膜片，所述第二膜片包括设置于所述外围区内的第二图案化结构。
  6. 根据权利要求5所述的背光模组，其中，所述第一图案化结构在所述发光组件上的正投影形状与所述第二图案化结构在所述发光组件上的正投影形状相同或不同。
  7. 根据权利要求5所述的背光模组，其中，所述第一图案化结构与所述第二图案化结构沿所述光学膜片组的厚度方向上对位设置。
  8. 根据权利要求1所述的背光模组，其中，所述发光组件包括设置于所述光学膜片组一侧的导光板，所述导光板靠近所述光学膜片组的一侧设置有多个凸起，所述光学膜片组包括多个固定孔，至少一个所述凸起插入一个所述固定孔内，且所述光学膜片组固定设置于所述导光板上。
  9. 一种显示装置，所述显示装置包括背光模组、以及显示面板，且所述显示面板设置于所述背光模组的出光侧；
    所述背光模组包括：
    包括：
    发光组件；
    光学膜片组，设置于所述发光组件的出光侧；
    其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构。
  10. 根据权利要求9所述的显示装置，其中，所述第一图案化结构包括设置于所述第一膜片中的多个开孔。
  11. 根据权利要求10所述的显示装置，其中，多个所述开孔呈阵列分布，且所述第一图案化结构呈网格状；
    或者，多个所述开孔包括多个平行分布的条形孔，且所述第一图案化结构呈拉丝状。
  12. 根据权利要求9所述的显示装置，其中，所述出光区包括沿第一方向延伸的第一边、以及沿第二方向延伸的第二边，所述第一方向与所述第二方向相异，所述第一图案化结构包括至少一个第一子部和至少一个第二子部；
    其中，所述第一子部沿所述第一方向延伸并设置于所述第一边远离所述出光区的一侧，所述第二子部沿所述第二方向延伸并设置于所述第二边远离所述出光区的一侧。
  13. 根据权利要求9所述的显示装置，其中，所述光学膜片组还包括与所述第一膜片层叠设置的第二膜片，所述第二膜片包括设置于所述外围区内的第二图案化结构。
  14. 根据权利要求13所述的显示装置，其中，所述第一图案化结构在所述发光组件上的正投影形状与所述第二图案化结构在所述发光组件上的正投影形状相同或不同。
  15. 根据权利要求13所述的显示装置，其中，所述第一图案化结构与所述第二图案化结构沿所述光学膜片组的厚度方向上对位设置。
  16. 根据权利要求9所述的显示装置，其中，所述发光组件包括设置于所述光学膜片组一侧的导光板，所述导光板靠近所述光学膜片组的一侧设置有多个凸起，所述光学膜片组包括多个固定孔，至少一个所述凸起插入一个所述固定孔内，且所述光学膜片组固定设置于所述导光板上。
  17. 一种显示装置，所述显示装置包括背光模组、以及显示面板，且所述显示面板设置于所述背光模组的出光侧；
    所述背光模组包括：
    包括：
    发光组件；
    光学膜片组，设置于所述发光组件的出光侧；
    其中，所述光学膜片组包括出光区、邻接于所述出光区的外围区、以及第一膜片，且所述第一膜片包括设置于所述外围区内的第一图案化结构；
    所述显示装置包括与所述出光区相对应的显示区、以及邻接于所述显示区并与所述外围区相对应的第一边框区和第二边框区；
    其中，所述第一边框区的宽度大于所述第二边框区的宽度，所述第一图案化结构设置于所述第一边框区内。
  18. 根据权利要求17所述的显示装置，其中，所述第一图案化结构包括设置于所述第一膜片中的多个开孔。
  19. 根据权利要求18所述的显示装置，其中，多个所述开孔呈阵列分布，且所述第一图案化结构呈网格状；
    或者，多个所述开孔包括多个平行分布的条形孔，且所述第一图案化结构呈拉丝状。
  20. 根据权利要求17所述的显示装置，其中，所述出光区包括沿第一方向延伸的第一边、以及沿第二方向延伸的第二边，所述第一方向与所述第二方向相异，所述第一图案化结构包括至少一个第一子部和至少一个第二子部；
    其中，所述第一子部沿所述第一方向延伸并设置于所述第一边远离所述出光区的一侧，所述第二子部沿所述第二方向延伸并设置于所述第二边远离所述出光区的一侧。
PCT/CN2023/132824 2023-03-30 2023-11-21 背光模组及显示装置 Ceased WO2024198397A1 (zh)

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