WO2022104553A1 - 背光模组和显示装置 - Google Patents

背光模组和显示装置 Download PDF

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Publication number
WO2022104553A1
WO2022104553A1 PCT/CN2020/129497 CN2020129497W WO2022104553A1 WO 2022104553 A1 WO2022104553 A1 WO 2022104553A1 CN 2020129497 W CN2020129497 W CN 2020129497W WO 2022104553 A1 WO2022104553 A1 WO 2022104553A1
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WO
WIPO (PCT)
Prior art keywords
light
backlight module
plate
bottom plate
emitting component
Prior art date
Application number
PCT/CN2020/129497
Other languages
English (en)
French (fr)
Inventor
张启平
Original Assignee
京东方科技集团股份有限公司
合肥京东方显示光源有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 合肥京东方显示光源有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US18/036,859 priority Critical patent/US11906776B2/en
Priority to CN202080002814.2A priority patent/CN114830022B/zh
Priority to PCT/CN2020/129497 priority patent/WO2022104553A1/zh
Publication of WO2022104553A1 publication Critical patent/WO2022104553A1/zh

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    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • 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
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • 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
    • G02B6/0086—Positioning aspects
    • G02B6/0091—Positioning aspects of the light source relative to the light guide
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/189—Printed circuits structurally associated with non-printed electric components characterised by the use of a flexible or folded printed circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10128—Display

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a backlight module and a display device.
  • Liquid Crystal Display mainly includes a liquid crystal panel and a backlight.
  • the backlight source is mainly light-emitting diode (Light Emitting Diode, LED) backlight source according to the type of light source.
  • Embodiments of the present disclosure provide a backlight module, including:
  • the back panel includes: a bottom panel, a counter panel opposite to the bottom panel, and a side panel connecting the bottom panel and the counter panel, the shape of the side panel at the connection position with the bottom panel is an arc shape, and the The bottom plate, the side plate and the pair of plates are connected in sequence to form an accommodating space, and a U-shaped groove is formed at the end;
  • a light guide plate located in the accommodating space of the back plate
  • the light bar assembly is located in the U-shaped groove, and the light bar assembly includes: a flexible circuit board, and a light-emitting component fixed on the flexible circuit board, wherein the flexible circuit board is located at a place away from the light guide plate. one side of the bottom plate, the light-emitting component is located on the side of the light guide plate;
  • a fixing tape is located between the pair of boards and the flexible circuit board, the flexible circuit board is attached to the pair of boards by the fixing tape, and the orthographic projection of the fixing tape on the bottom plate and the The orthographic projections of the light-emitting components on the base plate do not overlap.
  • the flexible circuit board includes a first portion overlapping with the light-emitting component, a second portion extending from the first portion along a side facing the light guide plate, and a second portion extending from the first portion along a side facing the light guide plate, a third part extending from the first part along the side toward the side plate;
  • the flexible circuit board is pasted with the fixing tape through the second part, so as to be attached to the pair of boards.
  • the second portion includes an overlapping portion overlapping with the fixing tape, and an extension portion extending from the overlapping portion to one side of the light-emitting component.
  • the length of the extension portion is 0.5 mm ⁇ 1 mm.
  • the distance between the surface of the first part facing away from the light-emitting component and the first surface is equal to the distance between the surface of the overlapping part facing away from the light guide plate and the first surface , wherein the first surface is the surface of the pair of plates facing the bottom plate.
  • the distance between the surface of the first part facing away from the light-emitting component and the first surface is greater than the distance between the surface of the overlapping part facing away from the light guide plate and the first surface , wherein the first surface is the surface of the pair of plates facing the bottom plate.
  • the fixing tape includes a first colloid, a first base material and a second colloid arranged in layers.
  • the backlight module further includes a cushion tape on the side of the pair of boards facing away from the bottom plate.
  • the pad body tape includes a second substrate.
  • the backlight module further includes a fourth substrate connecting the first substrate and the second substrate, the first substrate, the second substrate,
  • the fourth base material is an integral structure.
  • the thickness of the cushion tape in the direction perpendicular to the bottom plate is greater than the thickness of the fixing tape in the direction perpendicular to the bottom plate.
  • the cushion tape further comprises: a third colloid located between the pair of plates and the second substrate, located on a portion of the second substrate facing away from the pair of plates a fourth colloid on the side, and a third substrate located on the fourth colloid in turn away from the second substrate.
  • the backlight module further includes an optical film located on the side of the light guide plate away from the bottom plate, wherein the end of the optical film facing the U-shaped groove is connected to the end of the optical film.
  • the ends of the pair of plates have a gap.
  • An embodiment of the present disclosure further provides a display device, including the backlight module provided by the embodiment of the present disclosure, and a display panel located on a light-emitting side of the backlight module.
  • FIG. 1 is a schematic structural diagram of a backplane according to an embodiment of the present disclosure
  • FIG. 2 is one of the schematic structural diagrams of a backlight module provided by an embodiment of the present disclosure
  • FIG. 3 is a second schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 4 is a third schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 5 is a fourth schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 6 is a fifth schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 7 is a sixth schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 8 is a seventh schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of an adhesive tape provided by an embodiment of the present disclosure.
  • FIG. 10 is an eighth schematic structural diagram of a backlight module provided by an embodiment of the present disclosure.
  • the current notebook (Notebook) backlight module has a circular arc structure at the bottom to achieve a smooth transition at the corner position, so as to achieve the effect of beautiful appearance and better hand feel, but it is difficult to achieve accurate positioning of the light bar in the arc position. Therefore, the normal design of the light bar is difficult to achieve, so the light bar is usually flipped, fixed in the U-shaped groove of the backplane by the light bar fixing tape, and the light bar is in contact with the upper edge of the backboard U-groove structure. .
  • the opening size d of the U-shaped groove structure of the backplane product has a problem of fluctuation in the actual process of sheet metal mold production.
  • the current process capability level is the maximum and minimum position difference d MAX -d MIN at the level of 0.1mm.
  • the opening position d of the U-slot on the backplane is too large, since the FPC and the inner side of the upper edge of the U-slot are fixed, in this case, the mismatch between the end face of the light guide plate and the light-emitting surface of the light strip is highlighted, and the light-emitting The surface position is moved up in the z direction. Since the height of the effective light-emitting area of the current mainstream light bar is 0.5mm, the larger opening position of 0.1mm has a great impact, and the mismatched position will cause serious problems of light leakage. After floating up to 0.1mm, obvious local brightness anomalies occurred in the visible area. In the actual product, the position where the size of the U-slot opening is too large is not fixed and not limited to one location, so there is a problem of uneven light and shade on the light-incident side.
  • an embodiment of the present disclosure provides a backlight module, as shown in FIG. 2 , including:
  • the backplane 1 includes: a bottom plate 11, an opposite plate 12 opposite to the bottom plate 11, and a side plate 13 connecting the bottom plate 11 and the opposite plate 12, the shape of the side plate 13 at the connection position with the bottom plate 11 is an arc shape, the bottom plate 11, The side plate 13 and the pair of plates 12 are connected in sequence to form an accommodating space, and a U-shaped groove is formed at the end;
  • the light guide plate 2 is located in the accommodating space in the back plate 1;
  • the light bar assembly 3 is located in the U-shaped groove.
  • the light bar assembly 3 includes: a flexible circuit board 31 and a light-emitting component 32 fixed on the flexible circuit board 31 , wherein the flexible circuit board 31 is located on a side of the light guide plate 2 away from the bottom plate 11 . side, the light-emitting component 32 is located on the side of the light guide plate 2; specifically, the light-emitting component 32 can be an LED light bar;
  • the fixing tape 4 is located between the opposite board 12 and the flexible circuit board 31 .
  • the flexible circuit board 31 is attached to the opposite board 12 through the fixing tape 4 , and the orthographic projection of the fixing tape 4 on the bottom plate 11 and the normal projection of the light-emitting component 32 on the bottom plate 11 .
  • the projections do not overlap.
  • the light bar assembly 3 is attached to the counter board 12 by the fixing tape 4, so that the light bar assembly 3 can be assembled by flip-chip method, so as to avoid the light bar assembly 3 being attached to the bottom plate 11. 3.
  • the problem of ineffective positioning, and the orthographic projection of the fixing tape 4 on the bottom plate 11 does not overlap with the orthographic projection of the light-emitting component 32 on the bottom plate 11.
  • the opening size of the U-shaped groove is limited by the process and is larger than the normal size, Since the position of the light-emitting component 32 is not attached to the opposite plate 12, the light-emitting component 32 can sag by the gravity of the light-emitting component 32 itself (as shown in FIG.
  • the backlight module will leak light, resulting in uneven brightness and darkness on the light-incident side.
  • the opening size of the U-shaped groove is strictly manufactured according to the expected size, there will be no deviation.
  • the lower end of the light-emitting component 32 is relatively close to the bottom plate 11 , and the light-emitting component 32 is also approximately aligned with the side surface of the light guide plate 2 .
  • the flexible circuit board 31 includes a first portion 311 overlapping with the light-emitting component 32 , a second portion 312 extending from the first portion 311 along the side facing the light guide plate 2 , and a first portion 312 extending from the first portion 311 toward the light guide plate 2 311 extends along the third portion 313 toward the side plate 13 ; the flexible circuit board 31 is pasted with the fixing tape 4 through the second portion 312 to fit with the counter board 12 .
  • the second part 312 includes an overlapping part 3121 overlapping with the fixing tape 4 , and an extension part 3122 extending from the overlapping part 3121 to the side of the light-emitting component 32 , that is, as shown in FIG.
  • the end of the fixing tape 4 facing the light-emitting component 32 and the end of the light-emitting component 32 facing the light guide plate 2 are not aligned, and there is a gap between the two, so as to realize that the opening of the U-shaped groove is too large, and the light-emitting component
  • the flexible circuit board 31 has an active space, allowing the light-emitting component 32 to sag, avoiding strict alignment between the end of the fixing tape 4 facing the light-emitting component 32 and the end of the light-emitting component 32 facing the light guide plate 2. Even if the light-emitting member 32 has gravity, the sagging problem cannot be achieved because the periphery is closely attached to the counter board 12 .
  • the length L of the extending portion 3122 is 0.5 mm ⁇ 1 mm, so that the light-emitting component 32 can sag downward as a whole, so that the light-emitting surface of the light-emitting component 32 (the right side of the light-emitting component 32 in FIG.
  • the light-emitting component 32 hangs down, it will tilt itself (for example, the left side of the light-emitting component 32 is lower than the right side of the light-emitting component 32 ), and there will be an oblique slit between the light-emitting surface of the light-emitting component 32 and the left side of the light guide plate 2 , which may eventually lead to the problem of light leakage in the backlight module.
  • the distance h1 between the surface S2 of the first part 311 facing away from the light-emitting component 32 and the first surface S1 is equal to the distance h1 between the surface S3 of the overlapping part 3121 facing away from the light guide plate 2 and the first surface S1
  • the distance h1 between the surface S2 of the first portion 311 facing away from the light-emitting component 32 and the first surface S1 is greater than the distance h1 between the surface S3 and the first surface S1 of the overlapping portion 3121 facing away from the light guide plate 2 .
  • the fixing tape 4 includes a first colloid 411 , a first base material 421 and a second colloid 412 which are arranged in layers.
  • FIG. 9 shows the structure before the glue is attached to the backlight module.
  • the backlight module further includes a pad on the side of the opposite plate 12 away from the bottom plate 11 .
  • Body Tape 6 Specifically, the thickness h3 of the cushion tape 6 in the direction perpendicular to the bottom plate 11 may be greater than the thickness h4 of the fixing tape 4 in the direction perpendicular to the bottom plate 11 .
  • the backlight module since the backlight module includes the pad body tape 6 located on the side of the counter board 11 away from the bottom plate 12, the display panel above the backlight module can be raised, and the pad body tape 6 is used for padding
  • the fixing tape 4 is used to attach the light bar assembly 3
  • the size used to pad the display panel is larger than the thickness of the fixing tape 4 for pasting the light bar assembly 3. Therefore, the pad tape 6 is perpendicular to the base plate 11. The thickness is greater than the thickness of the fixing tape 4 in the direction perpendicular to the bottom plate 11, so that the pad body tape 6 and the fixing tape 4 can meet different requirements respectively.
  • the pad tape 6 includes: a second base material 422 .
  • the backlight module further includes a fourth substrate 424 connecting the first substrate 421 and the second substrate 422 .
  • the first base material 421, the second base material 422, and the fourth base material 424 have an integrated structure.
  • the backlight module further includes a pad body tape 6 , wherein the second base material 422 of the pad body tape 6 and the first base material 421 of the fixing tape 4 are integrally formed, so that when the fixing tape 4 is attached, the The pad body tape 6 is formed by integral bonding, which simplifies the assembly process of the backlight module and improves the efficiency.
  • the material of the first substrate 421 may specifically be polyethylene terephthalate (Polyethylene terephthalate, PET).
  • the pad tape further includes: a third glue 413 located between the opposing board 12 and the second base material 422, a fourth glue 414 located on the side of the second base material 422 away from the opposing board 12, and a fourth glue 414 located on the side of the second base material 422 away from the opposing board 12
  • both sides of the left half PET of the adhesive tape are covered with double-sided adhesive (ie, the fixing adhesive tape 4 ), the thickness of each layer of adhesive in the direction perpendicular to the bottom plate 11 is 0.025 mm, and the right side of the adhesive tape is
  • the multi-layer structure ie, the pad tape 6
  • one side of the PET is not provided with double-sided adhesive, and the overall thickness of the right side is adjusted according to product requirements, and the overall thickness can be 0.2mm to 0.5mm.
  • the thickness of the first base material 421 in the direction perpendicular to the bottom plate 11 is 0.03 mm ⁇ 0.06 mm. Specifically, for example, the thickness of the first substrate 421 in the direction perpendicular to the bottom plate 11 is 0.05 mm. In the embodiment of the present disclosure, the thickness of the first substrate 421 in the direction perpendicular to the bottom plate 11 is relatively thin, which can avoid In the embodiment of the present disclosure, when the second base material 422 of the cushion tape 6 and the first base material 421 of the fixing tape 4 are integrally formed, when the end of the board 12 is bent, if the first base material 421 is relatively Thick, there will be problems of excessive tension, not easy to bend, and bending deformation.
  • the backlight module further includes a reflection sheet 5 located between the bottom plate 11 and the light guide plate 2 .
  • the backlight module further includes an optical film 6 located on the side of the light guide plate 2 away from the bottom plate 11 .
  • An embodiment of the present disclosure further provides a display device, including the backlight module provided by the embodiment of the present disclosure, and a display panel located on the light-emitting side of the backlight module.
  • the light bar assembly 3 is attached to the counter board 12 by the fixing tape 4, so that the light bar assembly 3 can be assembled by flip-chip method, so as to avoid the light bar assembly 3 being attached to the bottom plate 11. 3.
  • the problem of ineffective positioning, and the orthographic projection of the fixing tape 4 on the bottom plate 11 does not overlap with the orthographic projection of the light-emitting component 32 on the bottom plate 11.

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
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  • Chemical & Material Sciences (AREA)
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Abstract

本公开实施例提供一种背光模组和显示装置。所述背光模组，包括：背板，包括：底板，与所述底板相对的对板，以及连接所述底板和所述对板的侧板，所述侧板的与所述底板连接位置处的形状为弧形状；导光板，位于所述背板内；灯条组件，位于所述U型槽，所述灯条组件包括：柔性电路板，以及固定于所述柔性电路板的发光部件，其中，所述柔性电路板位于所述导光板的背离所述底板的一侧，所述发光部件位于所述导光板的侧面；固定胶带，位于所述对板与所述柔性电路板之间，所述柔性电路板通过所述固定胶带与所述对板贴合，且所述固定胶带在所述底板的正投影与所述发光部件在所述底板的正投影不交叠。

Description

背光模组和显示装置 技术领域
本公开涉及显示技术领域，尤其涉及一种背光模组和显示装置。
背景技术
液晶显示器(Liquid Crystal Display)主要包括了液晶面板和背光源。背光源按光源种类主要为发光二极管(Light Emitting Diode，简称LED)背光源。
发明内容
本公开实施例提供一种背光模组，其中，包括：
背板，包括：底板，与所述底板相对的对板，以及连接所述底板和所述对板的侧板，所述侧板的与所述底板连接位置处的形状为弧形状，所述底板、所述侧板、所述对板依次连接，构成容置空间，并在端部构成一U型槽；
导光板，位于所述背板的所述容置空间内；
灯条组件，位于所述U型槽内，所述灯条组件包括：柔性电路板，以及固定于所述柔性电路板的发光部件，其中，所述柔性电路板位于所述导光板的背离所述底板的一侧，所述发光部件位于所述导光板的侧面；
固定胶带，位于所述对板与所述柔性电路板之间，所述柔性电路板通过所述固定胶带与所述对板贴合，且所述固定胶带在所述底板的正投影与所述发光部件在所述底板的正投影不交叠。
在一种可能的实施方式中，所述柔性电路板包括与所述发光部件重叠的第一部，由所述第一部沿朝向所述导光板一侧延伸出的第二部，以及由所述第一部沿朝向所述侧板一侧延伸出的第三部；
所述柔性电路板通过所述第二部与所述固定胶带粘贴，以与所述对板贴合。
在一种可能的实施方式中，所述第二部包括与所述固定胶带重叠的重叠 部，以及由所述重叠部向所述发光部件一侧延伸的延伸部。
在一种可能的实施方式中，在由所述发光部件指向所述导光板的方向上，所述延伸部的长度为0.5mm～1mm。
在一种可能的实施方式中，所述第一部背离所述发光部件的表面与第一表面之间的间距，等于所述重叠部背离所述导光板的表面与所述第一表面之间的间距，其中，所述第一表面为所述对板的面向所述底板的表面。
在一种可能的实施方式中，所述第一部背离所述发光部件的表面与第一表面之间的间距，大于所述重叠部背离所述导光板的表面与所述第一表面之间的间距，其中，所述第一表面为所述对板的面向所述底板的表面。
在一种可能的实施方式中，所述固定胶带包括叠层设置的第一胶体、第一基材和第二胶体。
在一种可能的实施方式中，所述背光模组还包括位于所述对板背离所述底板一侧的垫体胶带。
在一种可能的实施方式中，所述垫体胶带包括第二基材。
在一种可能的实施方式中，所述背光模组还包括连接所述第一基材和所述第二基材的第四基材，所述第一基材、所述第二基材、所述第四基材为一体结构。
在一种可能的实施方式中，所述垫体胶带在垂直于所述底板方向上的厚度，大于所述固定胶带在垂直于所述底板方向上的厚度。
在一种可能的实施方式中，所述垫体胶带还包括：位于所述对板与所述第二基材之间的第三胶体，位于所述第二基材的背离所述对板一侧的第四胶体，以及位于所述第四胶体的背离所述第二基材依次的第三基材。
在一种可能的实施方式中，所述背光模组还包括位于所述导光板背离所述底板一侧的光学膜片，其中，所述光学膜片的朝向所述U型槽的端部与所述对板的端部具有间隙。
本公开实施例还提供一种显示装置，包括如本公开实施例提供的所述背光模组，还包括位于所述背光模组出光侧的显示面板。
附图说明
图1为本公开实施例提供的一种背板的结构示意图；
图2为本公开实施例提供的一种背光模组的结构示意图之一；
图3为本公开实施例提供的一种背光模组的结构示意图之二；
图4为本公开实施例提供的一种背光模组的结构示意图之三；
图5为本公开实施例提供的一种背光模组的结构示意图之四；
图6为本公开实施例提供的一种背光模组的结构示意图之五；
图7为本公开实施例提供的一种背光模组的结构示意图之六；
图8为本公开实施例提供的一种背光模组的结构示意图之七；
图9为本公开实施例提供的一种胶带的结构示意图；
图10为本公开实施例提供的一种背光模组的结构示意图之八。
具体实施方式
为使本公开实施例的目的、技术方案和优点更加清楚，下面将结合本公开实施例的附图，对本公开实施例的技术方案进行清楚、完整地描述。需要注意的是，附图中各图形的尺寸和形状不反映真实比例，目的只是示意说明本公开内容。并且自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。显然，所描述的实施例是本公开的一部分实施例，而不是全部的实施例。基于所描述的本公开实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其它实施例，都属于本公开保护的范围。
除非另作定义，此处使用的技术术语或者科学术语应当为本公开所属领域内具有一般技能的人士所理解的通常意义。本公开说明书以及权利要求书中使用的“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组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。“内”、“外”、“上”、“下”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。
现行笔记本(Notebook)背光源模组在底部有圆弧结构，以实现在拐角位置处的圆滑过渡，从而达到美观和具有较佳的手感的效果，而灯条在圆弧位置难以实现准确定位，所以正常设计下的灯条正装难以法实现，所以得灯条通常都是倒装，通过灯条固定胶带固定在背板的U型槽内，灯条与背板U槽结构的上沿内侧接触。参见图1所示，背板产品的U型槽结构开口尺寸d在钣金件模具生产的实际过程中，尺寸存在波动的问题，目前的制程能力水平最大与最小的位置差d MAX-d MIN在0.1mm的水平。如此，由于灯条是通过双面胶带固定在U型槽的上方，那么LED的发光面位置在z方向直接受到U槽开口尺寸波动的影响，存在0.1mm的浮动。对于背板U槽开口位置d偏大的位置来说，因FPC与U槽上沿内侧是固定的，则该情况下，导光板端面与灯条发光面的失配凸显出来，灯条的发光面位置在z方向上移，鉴于目前主流灯条的有效发光区域高度在0.5mm，则开口位置偏大0.1mm影响很大，失配位置会产生漏光的严重问题，当居中位置的灯条位置上浮0.1mm后，可见区域发生明显的局部亮度异常。实际产品中，U槽开口大小偏大的位置不固定也不仅限于一处，则视觉上在入光侧画面存在明暗不均匀的问题。
有鉴于此，本公开实施例提供一种背光模组，参见图2所示，包括：
背板1，包括：底板11，与底板11相对的对板12，以及连接底板11和对板12的侧板13，侧板13的与底板11连接位置处的形状为弧形状，底板11、侧板13、对板12依次连接，构成容置空间，并在端部构成一U型槽；
导光板2，位于背板1内的容置空间内；
灯条组件3，位于U型槽内，灯条组件3包括：柔性电路板31，以及固定于柔性电路板31的发光部件32，其中，柔性电路板31位于导光板2的背离底板11的一侧，发光部件32位于导光板2的侧面；具体的，发光部件32可以LED灯条；
固定胶带4，位于对板12与柔性电路板31之间，柔性电路板31通过固 定胶带4与对板12贴合，且固定胶带4在底板11的正投影与发光部件32在底板11的正投影不交叠。
本公开实施例中，灯条组件3通过固定胶带4贴附于对板12，可以实现通过倒装方式将灯条组件3进行组装，避免灯条组件3贴附于底板11时，灯条组件3无法有效定位的问题，而且，固定胶带4在底板11的正投影与发光部件32在底板11的正投影不交叠，在U型槽的开口尺寸受工艺限制，较正常尺寸偏大时，由于发光部件32位置处未与对板12贴合，进而可以通过发光部件32自身的重力作用进行下垂(如图3所示)，实现与导光板2侧面大致对齐，进而可以改善因发光部件32与导光板2上下方向错位时，导致背光模组会发生漏光，致使入光侧的画面效果存在明暗不均的问题，而若在U型槽的开口尺寸实现按预期尺寸严格制作，没有发生偏差时，发光部件32下端与底板11较为接近，也会使光部件32与导光板2侧面大致对齐。
具体的，参见图4所示，柔性电路板31包括与发光部件32重叠的第一部311，由第一部311沿朝向导光板2一侧延伸出的第二部312，以及由第一部311沿朝向侧板13一侧延伸出的第三部313；柔性电路板31通过第二部312与固定胶带4粘贴，以与对板12贴合。
在具体实施时，结合图5所示，第二部312包括与固定胶带4重叠的重叠部3121，以及由重叠部3121向发光部件32一侧延伸的延伸部3122，即，结合图5所示，固定胶带4的朝向发光部件32的端部与发光部件32的朝向导光板2的端部之间并不对齐，二者之间存在间隙，以实现在U型槽的开口偏大，发光部件32发生下垂时，柔性电路板31具有活动空间，允许发光部件32发生下垂，避免固定胶带4的朝向发光部件32的端部与发光部件32的朝向导光板2的端部之间严格对齐时，即便发光部件32具有重力，而因周边与对板12紧密贴合，也无法实现下垂的问题。
具体的，结合图5所示，在由发光部件32指向导光板2的方向(如图5中的箭头OA所示方向)上，延伸部3122的长度L为0.5mm～1mm，以使发光部件32可以整体向下下垂，使发光部件32的发光面(如图3中发光部件 32的右侧面)与导光板2的左侧面大致贴合，避免若延伸部3122的长度L过小，发光部件32下垂时，自身会发生倾斜(如发光部件32的左侧较发光部件32的右侧较低)，会在发光部件32的发光面与导光板2的左侧面之间存在斜缝，最终可能会导致背光模组存在漏光的问题。
在一种可能的实施方式中，结合图6所示，第一部311背离发光部件32的表面S2与第一表面S1之间的间距h1，等于重叠部3121背离导光板2的表面S3与第一表面S1之间的间距h2，其中，第一表面S1为对板12的面向底板11的表面。
在一种可能的实施方式中，结合图7所示，第一部311背离发光部件32的表面S2与第一表面S1之间的间距h1，大于重叠部3121背离导光板2的表面S3与第一表面S1之间的间距h2，其中，第一表面S1为对板12的面向底板11的表面。
在具体实施时，结合图2-图7所示，固定胶带4包括叠层设置的第一胶体411、第一基材421和第二胶体412。
在具体实施时，参见图8所示和图9所示，其中，图9为未将胶体贴附在背光模组之前的结构，背光模组还包括位于对板12背离底板11一侧的垫体胶带6。具体的，垫体胶带6在垂直于底板11方向上的厚度h3，可以大于固定胶带4在垂直于底板11方向上的厚度h4。本公开实施例中，背光模组由于包括位于对板11背离底板12一侧的垫体胶带6，可以实现对背光模组上方的显示面板进行垫高，而且，因垫体胶带6用于垫高显示面板，固定胶带4用于粘贴灯条组件3，垫高显示面板所用的尺寸要大于粘贴灯条组件3的固定胶带4的厚度，因此，垫体胶带6在垂直于底板11方向上的厚度，大于固定胶带4在垂直于底板11方向上的厚度，可以使垫体胶带6与固定胶带4分别满足不同的需求。
在具体实施时，结合图8和图9所示，垫体胶带6包括：第二基材422。具体的，背光模组还包括连接第一基材421和第二基材422的第四基材424。具体的，第一基材421、第二基材422、第四基材424为一体结构。本公开实 施例中，背光模组还包括垫体胶带6，其中垫体胶带6的第二基材422与固定胶带4的第一基材421为一体结构，可以在贴附固定胶带4时，一体贴合形成垫体胶带6，简化了背光模组的组装工序，提升了效率。而且，在具体贴合时，可以先贴合垫体胶带6，后贴合固定胶带4，避免固定胶带4位于U型槽内侧，若先贴合固定胶带4，固定胶带4不容易贴合到预期位置的问题。第一基材421的材质具体可以为聚对苯二甲酸乙二醇酯(Polyethylene terephthalate，PET)。
具体的，垫体胶带还包括：位于对板12与第二基材422之间的第三胶体413，位于第二基材422的背离对板12一侧的第四胶体414，以及位于第四胶体414的背离第二基材422一侧的第三基材423。
具体的，结合图9所示，胶带的左半部分PET两面均覆有双面胶体(即固定胶带4)，每一层胶体在垂直于底板11方向上的厚度为0.025mm，胶带右侧为多层结构(即垫体胶带6)，且PET的一侧未设置双面胶体，右侧整体厚度依照产品需求调整，整体厚度可以为0.2mm～0.5mm。
在具体实施时，第一基材421的在垂直于底板11方向上的厚度为0.03mm～0.06mm。具体的，例如，第一基材421的在垂直于底板11方向上的厚度为0.05mm，本公开实施例中，第一基材421的在垂直于底板11方向上的厚度较薄，可以避免本公开实施例中，垫体胶带6的第二基材422与固定胶带4的第一基材421为一体结构时，在对板12的端部进行弯折时，若第一基材421较厚，会存在张力过大，不易弯曲，以及弯曲变形的问题。
在具体实施时，结合图2-图8所示，背光模组还包括位于底板11与导光板2之间的反射片5。
在具体实施时，结合图10所示，背光模组还包括位于导光板2背离底板11一侧的光学膜片6，具体的，光学膜片6可以包括扩散片61，以及位于扩散片背离导光板2一侧的增亮片62，其中，光学膜片6的朝向U型槽的端部与对板12的端部具有间隙K。
本公开实施例还提供一种显示装置，包括如本公开实施例提供的背光模 组，还包括位于背光模组出光侧的显示面板。
本公开实施例中，灯条组件3通过固定胶带4贴附于对板12，可以实现通过倒装方式将灯条组件3进行组装，避免灯条组件3贴附于底板11时，灯条组件3无法有效定位的问题，而且，固定胶带4在底板11的正投影与发光部件32在底板11的正投影不交叠，在U型槽的开口尺寸受工艺限制，较正常尺寸偏大时，由于发光部件32位置处未与对板12贴合，进而可以通过自身重力作用下进行下垂(如图2所示)，实现与导光板2侧面大致对齐，进而可以改善因发光部件32与导光板2上下方向错位时，导致背光模组会发生漏光，致使入光侧的画面效果明暗不均的问题。
尽管已描述了本发明的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然，本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样，倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (14)

  1. 一种背光模组，其中，包括：
    背板，包括：底板，与所述底板相对的对板，以及连接所述底板和所述对板的侧板，所述侧板的与所述底板连接位置处的形状为弧形状，所述底板、所述侧板、所述对板依次连接，构成容置空间，并在端部构成一U型槽；
    导光板，位于所述背板的所述容置空间内；
    灯条组件，位于所述U型槽内，所述灯条组件包括：柔性电路板，以及固定于所述柔性电路板的发光部件，其中，所述柔性电路板位于所述导光板的背离所述底板的一侧，所述发光部件位于所述导光板的侧面；
    固定胶带，位于所述对板与所述柔性电路板之间，所述柔性电路板通过所述固定胶带与所述对板贴合，且所述固定胶带在所述底板的正投影与所述发光部件在所述底板的正投影不交叠。
  2. 如权利要求1所述的背光模组，其中，所述柔性电路板包括与所述发光部件重叠的第一部，由所述第一部沿朝向所述导光板一侧延伸出的第二部，以及由所述第一部沿朝向所述侧板一侧延伸出的第三部；
    所述柔性电路板通过所述第二部与所述固定胶带粘贴，以与所述对板贴合。
  3. 如权利要求2所述的背光模组，其中，所述第二部包括与所述固定胶带重叠的重叠部，以及由所述重叠部向所述发光部件一侧延伸的延伸部。
  4. 如权利要求3所述的背光模组，其中，在由所述发光部件指向所述导光板的方向上，所述延伸部的长度为0.5mm～1mm。
  5. 如权利要求3所述的背光模组，其中，所述第一部背离所述发光部件的表面与第一表面之间的间距，等于所述重叠部背离所述导光板的表面与所述第一表面之间的间距，其中，所述第一表面为所述对板的面向所述底板的表面。
  6. 如权利要求3所述的背光模组，其中，所述第一部背离所述发光部件 的表面与第一表面之间的间距，大于所述重叠部背离所述导光板的表面与所述第一表面之间的间距，其中，所述第一表面为所述对板的面向所述底板的表面。
  7. 如权利要求1所述的背光模组，其中，所述固定胶带包括叠层设置的第一胶体、第一基材和第二胶体。
  8. 如权利要求7所述的背光模组，其中，所述背光模组还包括位于所述对板背离所述底板一侧的垫体胶带。
  9. 如权利要求8所述的背光模组，其中，所述垫体胶带包括第二基材。
  10. 如权利要求9所述的背光模组，其中，所述背光模组还包括连接所述第一基材和所述第二基材的第四基材，所述第一基材、所述第二基材、所述第四基材为一体结构。
  11. 权利要求10所述的背光模组，其中，所述垫体胶带在垂直于所述底板方向上的厚度，大于所述固定胶带在垂直于所述底板方向上的厚度。
  12. 权利要求10所述的背光模组，其中，所述垫体胶带还包括：位于所述对板与所述第二基材之间的第三胶体，位于所述第二基材的背离所述对板一侧的第四胶体，以及位于所述第四胶体的背离所述第二基材依次的第三基材。
  13. 如权利要求1所述的背光模组，其中，所述背光模组还包括位于所述导光板背离所述底板一侧的光学膜片，其中，所述光学膜片的朝向所述U型槽的端部与所述对板的端部具有间隙。
  14. 一种显示装置，其中，包括如权利要求1-13任一项所述的背光模组，还包括位于所述背光模组出光侧的显示面板。
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