WO2022183746A1 - 一种背光模组、其制作方法及显示装置 - Google Patents

一种背光模组、其制作方法及显示装置 Download PDF

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Publication number
WO2022183746A1
WO2022183746A1 PCT/CN2021/126057 CN2021126057W WO2022183746A1 WO 2022183746 A1 WO2022183746 A1 WO 2022183746A1 CN 2021126057 W CN2021126057 W CN 2021126057W WO 2022183746 A1 WO2022183746 A1 WO 2022183746A1
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WO
WIPO (PCT)
Prior art keywords
frame
optical element
backlight module
groove
extension length
Prior art date
Application number
PCT/CN2021/126057
Other languages
English (en)
French (fr)
Inventor
潘湾萍
吴恩龙
付常佳
黄建明
余海龙
林雅宾
苏学臻
贾小波
荆传贺
Original Assignee
京东方科技集团股份有限公司
福州京东方光电科技有限公司
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.)
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Application filed by 京东方科技集团股份有限公司, 福州京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US18/271,037 priority Critical patent/US12085809B2/en
Publication of WO2022183746A1 publication Critical patent/WO2022183746A1/zh

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    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133322—Mechanical guidance or alignment of LCD panel support components
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133325—Assembling processes
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/46—Fixing elements
    • 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
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/04—Signs, boards or panels, illuminated from behind the insignia
    • G09F13/0418—Constructional details
    • G09F13/0445—Frames

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a backlight module, a manufacturing method thereof, and a display device.
  • the optical film material is easily folded due to thermal expansion and cold contraction, resulting in uneven brightness and darkness.
  • the required expansion space is also large.
  • the expansion of the diaphragm is often limited by the space, resulting in the undesirable phenomenon of diaphragm wrinkles.
  • the existing display device has the technical problems of poor folds of the diaphragm and low display quality.
  • the present disclosure provides a backlight module, a method for manufacturing the same, and a display device, which are used to avoid poor folds of the diaphragm and improve display quality.
  • an embodiment of the present disclosure provides a backlight module, including:
  • a fixed frame arranged around the first optical element wherein the fixed frame includes a first frame and a second frame arranged oppositely, and a third frame and a fourth frame arranged oppositely, each of the fixed frame
  • Each side of the frame facing the first optical element is provided with a plurality of adhesive tapes which are independent of each other and extend along the extension direction of the side, and the first optical element is fixed with the fixing frame by the adhesive tapes.
  • the backlight module includes a second optical element and a third optical element that are away from the first optical element in sequence, wherein, on the second optical element and the third optical element Each of them is provided with a plurality of hanging ear holes, and the second optical element and the third optical element are fixed to the fixed frame by passing through the corresponding hanging ear holes through the plurality of hanging ears arranged on the fixed frame.
  • the extension length of the first frame and the extension length of the second frame are both the first extension length
  • the extension length of the third frame and the extension length of the fourth frame Both are the second extension length
  • the first extension length is greater than the second extension length
  • each frame is reserved with a groove area for fixing the hanging ear
  • the first frame and the second frame are All the groove areas of the 2000 are provided with the hanging lugs
  • the groove areas on at least one of the third frame and the fourth frame are not provided with the hanging lugs.
  • the size of the mounting ear hole corresponding to any frame along the length direction of the frame gradually increases along the direction away from the center position of the fixed frame.
  • the extension length of any one of the groove areas along the frame is a preset length, and the distance between any two adjacent groove areas on any side is in the range of (100mm, 300mm) .
  • the distance between any two adjacent groove regions is a first preset distance
  • the distance between any two adjacent groove regions is a second preset distance different from the first preset distance
  • the distance between two adjacent groove regions away from the center position of the fixed frame is greater than that close to the center position of the fixed frame.
  • the distance between two adjacent groove areas, on the second frame, the distance between any two adjacent groove areas is the same preset distance.
  • any frame includes at least a first groove area and a second groove area respectively disposed at two ends of the edge, and at least one tape is disposed in the first groove area and the second groove area.
  • the adhesive tape is at least partially attached to the first groove area, and the adhesive tape is at least partially attached to the second groove area.
  • the length range of any one of the tapes is [a, 2a+d], where a represents the distance between any two adjacent groove regions, d represents the extension length of the groove area along the frame where it is located.
  • the distance between any two adjacent tapes ranges from [a+2d, 2a+3d], where a represents any two adjacent grooves
  • the spacing between regions, d represents the extension length of the groove region along the frame where it is located.
  • silica gel is filled in the groove area corresponding to the tape and not provided with the hanging lugs, wherein the thickness of the silica gel is equal to the thickness of the concave The depth of the groove area.
  • an embodiment of the present disclosure provides a display device, including: the backlight module as described above.
  • an embodiment of the present disclosure provides a method for manufacturing a backlight module, including:
  • a plurality of mutually independent adhesive tapes are arranged on the side of each frame of the fixing frame facing the first optical element, wherein the fixing frame is arranged around the first optical element for a circle, and the fixing frame includes a first optical element arranged oppositely. the frame and the second frame, and the third frame and the fourth frame set oppositely;
  • the first optical element and the fixing frame are fixed together by the adhesive tape.
  • the backlight module includes a second optical element and a third optical element that are arranged away from the first optical element in sequence
  • the first optical element is attached to the first optical element by the adhesive tape.
  • the second optical element and the third optical element are connected to the second optical element and the third optical element through the plurality of mounting ears provided on the fixing frame passing through the plurality of mounting ear holes opened on the second optical element and the third optical element. fixed with the fixed frame.
  • the method before disposing a plurality of mutually independent adhesive tapes on the side of each frame of the fixed frame facing the first optical element, the method further includes:
  • a groove area for fixing the hanging ear is provided on each frame of the fixing frame;
  • the mounting ears are fixed to the groove area on the first frame and the second frame, and the groove area on at least one frame of the third frame and the fourth frame is not
  • the hanging lugs are provided, wherein the extension length of the first frame and the extension length of the second frame are both the first extension length, and the extension length of the third frame and the extension length of the fourth frame are both. is a second extension length, and the first extension length is greater than the second extension length.
  • each frame of the fixed frame facing the first optical element is provided with a plurality of adhesive tapes that are independent of each other, including:
  • At least one of the adhesive tapes is arranged in the space between the first groove area and the second groove area at both ends of any frame, wherein the adhesive tape is arranged on the fixed frame facing the first optical element. side.
  • each frame of the fixed frame facing the first optical element is provided with a plurality of adhesive tapes that are independent of each other, including:
  • the method further includes:
  • Silica gel is filled in the groove area of the third frame and the fourth frame where the mounting ears are not provided, wherein the thickness of the silica gel is equal to the depth of the groove area.
  • FIG. 1 is a schematic top-view structure diagram of a backlight module provided by an embodiment of the present disclosure
  • Fig. 2 is one of the schematic cross-sectional structures along the MM direction in Fig. 1;
  • FIG. 3 is a schematic top-view structure diagram of a backlight module provided by an embodiment of the present disclosure
  • FIG. 4 is a schematic diagram of a cross-sectional structure along the NN direction in FIG. 3;
  • Fig. 5 is one of the partial enlarged views of the corresponding structure of the dotted line frame marked area A in Fig. 3;
  • FIG. 6 is a schematic top-view structure diagram of a backlight module provided by an embodiment of the present disclosure.
  • Fig. 7 is one of the cross-sectional structure schematic diagrams along the OO direction in Fig. 6;
  • FIG. 8 is a partial enlarged view of the structure corresponding to the marked area B in the dotted line frame in FIG. 3;
  • FIG. 9 is a schematic top-view structure diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 10 is a schematic view of one of the cross-sectional structures along the direction SS in FIG. 9;
  • FIG. 11 is a schematic top-view structure diagram of a backlight module provided by an embodiment of the present disclosure.
  • FIG. 12 is a schematic view of one of the cross-sectional structures along the direction PP in FIG. 11;
  • FIG. 13 is a schematic diagram of another cross-sectional structure along the PP direction in FIG. 11;
  • FIG. 14 is a schematic diagram of the relative positional relationship between an adhesive tape and a mounting lug disposed in a groove area in a backlight module provided by an embodiment of the present disclosure
  • 15 is a schematic diagram of the relative positional relationship between an adhesive tape and a mounting lug disposed in a groove area in a backlight module provided by an embodiment of the present disclosure
  • 16 is a schematic diagram of the relative positional relationship between an adhesive tape and a mounting lug disposed in a groove area in a backlight module provided by an embodiment of the present disclosure
  • 17 is a schematic diagram of the relative positional relationship between an adhesive tape and a mounting lug disposed in a groove area in a backlight module provided by an embodiment of the present disclosure
  • FIG. 18 is a schematic diagram of the relative positional relationship between an adhesive tape and a mounting lug disposed in a groove area in a backlight module provided by an embodiment of the present disclosure
  • Fig. 19 is another kind of sectional structure schematic diagram along the OO direction in Fig. 6;
  • Figure 20 is a schematic diagram of one of the structures in which the adhesive tape is broken in Figure 19;
  • 21 is a schematic structural diagram of an adhesive tape in a backlight module provided by an embodiment of the disclosure.
  • FIG. 22 is a flowchart of a method for fabricating a backlight module provided by an embodiment of the present disclosure
  • FIG. 23 is a flowchart of a method before step S101 in a method for manufacturing a backlight module provided by an embodiment of the present disclosure.
  • diaphragm wrinkles are one of the common defects in the development of display modules.
  • the main manifestation of the poor wrinkle of the diaphragm is that the display module is bright and uneven under the side viewing angle under the lighting state.
  • the backlight film is basically an organic resin product, which has the characteristics of moisture absorption and thermal expansion, a certain expansion space of the film will be reserved in the design of the backlight module.
  • the area of the backlight film is often larger, and accordingly, the expansion space required for the backlight film is also larger.
  • there are often certain restrictions on the reservation of the expansion space In this case, the expansion of the diaphragm is often limited by the space, resulting in the undesirable phenomenon of diaphragm folds.
  • the warping of the diffuser plate in the existing backlight module is often due to its large lateral size, and the fixing method is fixed by all glue, because the surrounding force of the diffuser plate is too large, especially In the high temperature and high humidity reliability test, the surrounding expansion space is limited, and the expansion is often concentrated inside the diffuser plate. In addition, since the lateral dimension of the diaphragm in the backlight module is often large, the reserved expansion amount is insufficient. In the high temperature and high humidity reliability test, the expansion of the diaphragm will interfere with the limit hanger, resulting in The diaphragm is poorly wrinkled, which in turn reduces the display quality.
  • the embodiments of the present disclosure provide a backlight module, a method for manufacturing the same, and a display device, which are used to avoid poor folds of the diaphragm and improve display quality.
  • FIG. 1 is a schematic top view of a backlight module provided by an embodiment of the present disclosure
  • FIG. 2 is a schematic cross-sectional structure along the MM direction in FIG. 1.
  • the backlight module includes:
  • the side of each frame of the fixing frame 20 facing the first optical element 10 is provided with a plurality of adhesive tapes 30 which are independent of each other and extend along the extension direction of the side, and the first optical element 10 passes through the adhesive tapes. 30 is fixed with the fixed frame 20 .
  • the first frame 201 , the second frame 202 , the third frame 203 and the fourth frame 204 may all belong to the edge portions of the fixing frame 20 .
  • the material of the fixing frame 20 may be aluminum, and may also be other metal materials, which are not limited herein.
  • the fixing frame 20 includes a first frame 201 and a second frame 202 arranged oppositely, and a third frame 203 and a fourth frame 204 arranged oppositely.
  • the fixing frame 20 is arranged around the first optical element 10.
  • the side of each frame of the fixing frame 20 facing the first optical element 10 is provided with a plurality of adhesive tapes 30 which are independent of each other and extend along the extension direction of the side, wherein the extension length of each adhesive tape 30 may be the same It can also be different. Specifically, it can be set according to actual application needs.
  • the number of adhesive tapes 30 set on each frame can be the same number or different numbers. Specifically, It is set according to the specific length of the corresponding side and the length of each adhesive tape 30 in practical application.
  • the first optical element 10 and the fixing frame 20 are fixed together by adhesive tapes 30 that are independent of each other, thereby ensuring the stability of the backlight module.
  • the adhesive tapes 30 disposed on each frame of the fixing frame 20 are independent of each other, compared with the full adhesive bonding between the first optical element 10 and the fixing frame 20 in the prior art, the The adhesive force between the adhesive tape 30 and the fixing frame 20 is reduced, and the property of the adhesive tape 30 to produce recoverable deformation in response to the expansion and contraction of the optical element is improved.
  • the first optical element 10 When the first optical element 10 expands, the The resistance of the adhesive tape 30 to recoverable deformation is relatively small, and the first optical element 10 will have a certain offset relative to the fixed frame 20 , and the offset may be along the center position away from the fixed frame 20 . direction shift, in addition, when the first optical element 10 expands, the adhesive tape 30 with a certain thickness will be slightly deformed, and the first optical element 10 will be deformed with the adhesive tape 30. In this way, the expansion degree of the first optical element 10 near the center of the fixing frame 20 is weakened, so as to avoid the poor wrinkling of the corresponding diaphragm of the first optical element 10, thereby improving the display quality. The situation when the first optical element 10 shrinks is similar and will not be repeated.
  • FIG. 3 is a schematic top view structure of a backlight module, and the upper left corner area where the wavy line is located in FIG. 3 is the fixed
  • the structure in which the relevant optical film layers are removed from the frame 20, as shown in FIG. 4 is a schematic diagram of one of the cross-sectional structures along the NN direction in FIG. 3, and as shown in FIG. A partial magnified view.
  • the backlight module includes a second optical element 102 and a third optical element 103 that are away from the first optical element 10 in sequence, wherein the second optical element 102 and the third optical element 103 are on the A plurality of mounting ear holes 500 are opened, and the second optical element 102 and the third optical element 103 are connected to the corresponding mounting ear holes 500 through a plurality of mounting ears 50 arranged on the fixing frame 20 .
  • the fixed frames 20 are fixed together.
  • the backlight module can be set in a direct type backlight source
  • the first optical element 10 can be a diffuser plate
  • the second optical element 102 can be a prism sheet
  • the third optical element 102 can be a prism sheet.
  • the element 103 may be a diffuser, in which case the thickness of the first optical element 10 is greater than the thickness of the third optical element 103 .
  • the first optical element 10 is fixed with the fixing frame 20 by the adhesive tape 30 arranged on the fixing frame 20 , and the adhesive tape 30 arranged on the fixing frame 20 ensures the first optical element 10 .
  • the stability of an optical element 10 on the fixing frame 20 further ensures the stability of the backlight module.
  • the second optical element 102 and the third optical element 103 pass through the corresponding mounting ear holes 500 through a plurality of mounting ears 50 provided on the fixing frame 20, and are fixed together with the fixing frame 20, wherein , the specific number of the mounting ears 50 set on the fixing frame 20 can be set according to the actual application, which is not limited herein.
  • the second optical element 102 and the third optical element 103 are ensured in the The stability of the fixing frame 20 further ensures the stability of the backlight module.
  • the backlight module can also modulate the light from the backlight source in the backlight module correspondingly through the multi-layer film layers included, thereby ensuring the use performance of the backlight module.
  • the backlight module includes a quantum dot film
  • the color light from the backlight source can be made more pure through the quantum dot film.
  • the backlight module is applied to the liquid crystal display device, all the The display quality of the liquid crystal display device.
  • the backlight module may include a diffusion plate that is away from the fixing frame 20 in sequence.
  • the prism sheet and the diffusing sheet can also include a reflective sheet, a quantum dot film, etc., which is not limited here.
  • a reflective sheet e.g., a reflective sheet
  • a quantum dot film e.g., a quantum dot film
  • those skilled in the art can also select the sequence of the optical film layers in the backlight module according to actual use requirements, which is not limited here.
  • FIG. 6 is a schematic top view of the backlight module
  • FIG. 7 is a cross-section along the OO direction in FIG. 6 .
  • Schematic diagram of the structure specifically, the extension length of the first frame 201 and the extension length of the second frame 202 are both the first extension length, the extension length of the third frame 203 and the extension length of the fourth frame 204 are both.
  • the extension length is the second extension length
  • the first extension length is greater than the second extension length
  • each frame is reserved with a groove area 40 for fixing the hanging ear 50, the first frame 201 and the
  • the mounting lugs 50 are provided in the groove areas 40 on the second frame 202 , and the groove areas 40 on at least one frame of the third frame 203 and the fourth frame 204 are not provided the mounting ears 50 .
  • the extension length of the first frame 201 and the extension length of the second frame 202 are both the first extension length, the extension length of the third frame 203 and the extension length of the fourth frame 204
  • the lengths are all second extension lengths, and the first extension length is greater than the second extension length, for example, the first extension length is 2.2m, and the second extension length is 1.2m.
  • the extension length of each frame of the fixing frame 20 can be set according to the actual size of the backlight module, which is not limited here.
  • each frame on the fixing frame 20 is reserved with a groove area 40 for fixing the hanging ear 50 , and the groove area 40 on the first frame 201 and the second frame 202
  • the mounting ears 50 are all provided, and the mounting ears 50 are not provided in the groove area 40 on at least one of the third frame 203 and the fourth frame 204, as shown in FIG.
  • the third frame 203 is not provided with the mounting ears 50, and the fourth frame 204 is not provided with the mounting ears 50; for another example, the third frame 203 may not be provided with the mounting ears 50, and the fourth frame
  • the mounting ears 50 are provided on the 204 ; for another example, the fourth frame 204 may not be provided with the mounting ears 50 .
  • the mounting ears 50 can be set according to the horizontal and vertical requirements of the backlight module, which is not limited herein.
  • the mounting lugs 50 can be arranged on the short side of the fixing frame 20 away from the placement surface, so as to avoid the first optical element 10 itself
  • the influence of gravity improves the stability of the backlight module.
  • the first optical element when the second optical element 102 and the third optical element 103 expand, since the corresponding optical elements can be freely retracted toward a frame without the hanging lugs 50, the first optical element The second optical element 102 and the third optical element 103 expand along a frame without the mounting lugs 50 .
  • the frame without the mounting ears 50 is the short frame of the fixing frame 20
  • the second optical element 102 and the third optical element 103 expand, the second optical element 102 and the third optical element 103 can be free to a frame without the mounting lug 50 Shrinkage, especially the long side of the corresponding optical element can be freely retracted in the direction of the short side, so that the gap between the second optical element 102 and the third optical element 103 and the mounting lug 50 is greatly weakened. Therefore, the degree of wrinkling of the second optical element 102 and the third optical element 103 is weakened, the phenomenon of poor wrinkling of the diaphragm is avoided, and the display quality is further ensured.
  • FIG. 8 is a partial enlarged view of the structure corresponding to the area B marked by the dotted frame in FIG. 3 .
  • the mounting ear holes 500 corresponding to any frame are along the length direction of the frame. The size gradually increases in the direction away from the central position of the fixed frame 20 .
  • the size of each of the mounting ears 50 along the length of the frame is equal, not completely equal, but may be approximately equal, approximately equal, and the size of any of the mounting ears 500 along the length of the frame is larger than the corresponding size
  • the size of the mounting lug 50 along the length of the frame in this case, it can be ensured that the mounting lug 50 penetrates the mounting lug hole 500, and then the corresponding optical elements are fixed, thereby ensuring the stability of the backlight module. sex.
  • the second optical element 103 is The optical element 102 and the third optical element 103 can move freely in the space reserved by the mounting ear hole 500, so as to avoid interference between the corresponding optical element and the mounting ear, and avoid the phenomenon of poor folds of the diaphragm. , which further ensures the display quality.
  • the extension length of any one of the groove regions 40 along the frame is a predetermined length, and the distance between any two adjacent groove regions 40 on any frame is in the range of (100mm, 300mm ), for example, the spacing range between any two adjacent groove regions 40 on any frame is 150 mm, and for another example, the spacing range is 200 mm.
  • the spacing range between any two adjacent groove regions 40 on any frame is 150 mm, and for another example, the spacing range is 200 mm.
  • the groove region 40 may have the following two arrangement manners, but is not limited to the following two arrangement manners.
  • the top view of the backlight module corresponding to the first setting method is shown in FIG. 9 .
  • the distance between any two adjacent groove regions 40 is Both are the first preset distance
  • the distance between any two adjacent groove regions 40 is a second preset distance different from the first preset distance.
  • the groove area 40 is provided with the hanging lugs 50
  • the distance between the two groove areas 40 corresponds to the distance between the two hanging lugs 50.
  • the first preset distance is b1
  • the second preset distance is b2
  • the first preset distance b1 is smaller than the second preset distance b2
  • the first frame 201 The number of the mounting ears 50 provided on the second frame 202 is greater than the number of the mounting ears 50 provided on the second frame 202 . It is worth noting that, all the cases here are the same first preset distance and the same second preset distance, which are not completely the same, and may be approximately the same, or substantially the same. In this way, all the groove areas 40 on the first frame 201 can be distributed axially symmetrically, and all the groove areas 40 on the second frame 202 can be distributed axially symmetrically.
  • the first preset distance between any two adjacent groove areas 40 on the first frame 201 , and any two adjacent groove areas 40 on the second frame 202 The second preset distance between them is different, and all the groove areas 40 on the first frame 201 may be distributed asymmetrically with all the groove areas on the second frame 202, such that Therefore, the foolproof design of the relevant diaphragm can be ensured, and the installation speed of the relevant diaphragm on the fixed frame 20 can be ensured.
  • the groove area 40 on the first frame 201 and the second frame 202 all the groove areas 40 on the third frame 203
  • the groove area 40 and all the groove areas 40 on the fourth frame 204 may be axially symmetrically distributed as shown in FIG.
  • the distance between two adjacent groove areas 40 and the distance between two adjacent groove areas 40 on the fourth frame 204 may be the same as the first preset distance.
  • the distances are the same or different, and can be specifically set according to actual application needs, which is not limited here.
  • the combination For the schematic diagram of one of the cross-sectional structures along the direction SS in FIG. 9 shown in FIG. 10 , m groove areas 40 are provided on the side, and correspondingly, the hanging lugs disposed in the groove area 40
  • the numbers of 50 are 1, 2, ..., m, and m is an integer greater than 3.
  • the relationship between the distances between the groove regions 40 on this side is: a 1 ⁇ a x ⁇ am -1 , where " ⁇ " means approximately equal, roughly equal, the distance between the mounting lugs 50 numbered 1 and the mounting lugs 50 numbered 2 is a 1 , which is located between the two mounting lugs 50 at the center of the frame.
  • the spacing is a x
  • the spacing between the mounting lugs 50 numbered m and the mounting lugs 50 numbered (m-1) is a m-1 , that is, all the groove areas 40 on this side Axisymmetric distribution.
  • the top view of the backlight module corresponding to the second setting method is shown in FIG. 11 .
  • the distance between the groove areas 40 is greater than the distance between two adjacent groove areas 40 near the center of the fixing frame 20.
  • any two adjacent The spacing between the groove regions 40 is the same preset distance. In this way, all the groove areas 40 on the first frame 201 and all the groove areas 40 on the second frame 202 are distributed axisymmetrically. All of the groove areas 40 may be distributed axially symmetrically, and all the grooved areas 40 on the second frame 202 may be distributed axially symmetrically, as shown in FIG. 11 .
  • all the groove areas 40 on the third frame 203 and all the groove areas 40 on the fourth frame 204 may be distributed axially symmetrically, and further It can be distributed non-axisymmetrically.
  • the number of the groove areas 40 on the first frame 201 and the number of the groove areas 40 on the second frame 202 are both nine, and the third frame 203
  • the number of the groove areas 40 on the above and the number of the groove areas 40 on the third frame 204 are both four.
  • the groove region 40 is not limited herein.
  • the groove area 40 on the first frame 201 may be designed axially symmetrically. In this case, since all the groove areas 40 on the first frame 201 and all the groove areas 40 on the second frame 202 are distributed axisymmetrically, in the groove area 40 After the mounting lugs 50 are arranged inside, the related films in the first optical element 10 can be quickly installed in the backlight module through the corresponding mounting lugs 50 .
  • the non-axisymmetric distribution of the groove areas 40 can also ensure the foolproof design of the relevant diaphragms. After the hanging lugs 50 are arranged in the corresponding groove areas, it is convenient to install the relevant diaphragms on the fixed frame 20. , the manufacturing efficiency of the backlight module is improved.
  • the distance between two adjacent groove areas 40 away from the center of the fixed frame 20 is greater than the distance between the two adjacent groove areas 40 close to the center of the fixed frame 20 .
  • the distance between the adjacent groove areas 40 in this case, after installing the hanging ears 50 to the corresponding groove areas 40, between the hanging ears 50 at the center position away from the fixed frame 20 A relatively sufficient expansion space is reserved.
  • the first optical element 10 expands, the free expansion of the first optical element 10 at the center position away from the fixed frame 20 can be guaranteed, and the edge position can be effectively avoided.
  • the interference between the mounting lugs 50 and the corresponding diaphragms can effectively reduce the internal expansion of the corresponding diaphragms, further avoid the phenomenon of poor folds of the diaphragms, and improve the display quality.
  • the groove area 40 on the fixing frame 20 in the above-mentioned two setting methods, those skilled in the art can also use other methods to set the groove area according to actual application requirements 40.
  • the distance between any two adjacent hanging ears 50 disposed on any frame is also the same preset distance.
  • those skilled in the art can set the specific value of the preset distance according to actual application requirements, which is not limited here.
  • FIG. 13 shows another schematic cross-sectional structure along the PP direction in FIG. 11 .
  • the tapes 30 is arranged in the first groove area 401 and the second groove area 402. within the space between the second groove regions 402 . That is to say, at least one adhesive tape 30 is arranged between the two groove areas located at the two ends of the single side.
  • At least one adhesive tape 30 is arranged between the first groove area 401 and all the groove areas.
  • three adhesive tapes 30 are attached to the first groove area 401 and the second groove area 402 on the first frame 201 in FIG. 13 In this way, even if the corresponding hanging lugs 50 are arranged in each groove area on the first frame 201, since the adhesive tape 30 is only arranged between the groove areas at the two ends, reserved A relatively sufficient amount of corner expansion is obtained, which further avoids the poor wrinkle of the diaphragm expanding to the inside, and ensures the display quality.
  • the adhesive tape 30 is at least partially attached to the first groove area 401
  • the adhesive tape 30 is at least partially attached to the second groove area 402 , that is to say, tapes 30 must be attached to the groove areas located at both ends of any frame.
  • the first optical element 10 is attached to the fixing frame 20 through the tapes 30 .
  • the corners of the spreading plate are prevented from being lifted, the stability of the backlight module is further ensured, and the use performance of the backlight module is improved.
  • the length of any of the tapes 30 is in the range [a, 2a+d], where a represents the distance between any two adjacent groove regions 40, d represents the extension length of the groove area 40 along the frame where it is located.
  • the length of any of the tapes 30 is greater than or equal to a, and less than or equal to (2a+d), the lengths of the tapes 30 on the same side can be the same length, or are different lengths, which are specifically set according to actual application needs.
  • a represents the distance between any two adjacent groove areas 40 , and when the groove area 40 is provided with the hanging lugs 50 , a may also represent the distance between two adjacent hanging lugs 50 .
  • the relative positional relationship between the adhesive tape 30 and the hanging lugs 50 disposed in the groove area 40 may be as shown in FIG. 14 , or may be as shown in FIG. 14 .
  • the relative positional relationship between the adhesive tape 30 and the hanging lugs 50 disposed in the groove area 40 may be as shown in FIG. 16 .
  • the relative positional relationship between the adhesive tape 30 and the hanging lugs 50 disposed in the groove area 40 may be as shown in FIG. 17 .
  • the adhesive tape can also be set according to the extension length of one side of the fixing frame 20, the length of a single hanging lug 50 and the actual setting of the distance between two adjacent groove areas The length of 30 will not be described in detail here.
  • the extending length of the groove area 40 along the frame is often smaller than the distance between any two adjacent groove areas 40 .
  • the distance between any two adjacent groove areas 40 can be directly set as a reference, ignoring the extended length of the groove areas 40 along the frame, for example, directly setting the length of the tape 30 is a, or the length of the adhesive tape 30 is set to 2a, so as to improve the attaching speed of the adhesive tape 30, thereby improving the manufacturing efficiency of the backlight module.
  • the distance between any two adjacent adhesive tapes 30 ranges from [a+2d, 2a+3d], where a represents any two adjacent groove areas
  • the distance between 40, d represents the extension length of the groove area 40 along the frame.
  • the distance between any two adjacent adhesive tapes 30 attached is greater than or equal to (a+2d), and less than or equal to (2a+3d), all two
  • the spacing between the adjacent adhesive tapes 30 may be the same spacing, or may be different spacings, which are specifically set according to actual application requirements.
  • the distance between two adjacent tapes 30 on each frame is (a+2d), and the length of the tapes 30 on the first frame 201 and the second frame 202 is (2a+d) ), the length of the adhesive tape 30 on the third frame 203 and the fourth frame 204 is 1.5a.
  • the distance between any two adjacent adhesive tapes 30 on the same side of the fixing frame 20 can be set to (a+2d), and can also be set to (2a+3d).
  • FIG. 19 shows another schematic cross-sectional structure along the OO direction in FIG. 6 .
  • the adhesive tape 30 corresponds to and is not provided with the hanger
  • the groove region 40 of the ear 50 is filled with silica gel 60 , wherein the thickness of the silica gel 60 is equal to the depth of the groove region 40 .
  • the adhesive tape since the groove area 40 on at least one of the third frame 203 and the fourth frame 204 is not provided with the hanging lugs 50 , in this case, the adhesive tape will be affixed later.
  • the fixing frame 20 may be pre-filled with silica gel 60 (Rubber) in the groove area 40 corresponding to the position where the adhesive tape 30 is attached without the mounting ears 50 , the thickness of the silica gel 60 is equal to the depth of the corresponding groove area 40.
  • silica gel 60 Rubber
  • the silica gel 60 and the attached tape 30 The combination is relatively good, which can avoid tearing the first optical element 10 to cause the adhesive tape 30 to break, thus ensuring the integrity of the adhesive tape 30, thereby ensuring the use performance of the backlight module.
  • the adhesive tape 30 may be a double-sided adhesive tape of non-woven acrylic glue series, as shown in FIG. 21 , one of the structures of the adhesive tape 30 Schematic diagram, specifically, the tape 30 includes a release film 301, a first layer of acrylic glue 302, a non-woven fabric 303 and a second layer of acrylic glue 304 that are stacked in sequence.
  • the release film is 301 can be torn off and directly attached to the fixed frame 20, the whole attaching process is more convenient and quick, in addition, the double-sided tape has low cost and good viscosity, which can effectively ensure the backlight module. stability, thereby ensuring the performance of the backlight module.
  • an embodiment of the present disclosure also provides a display device, which may be a liquid crystal display device.
  • the principle of solving the problem of the display device is similar to that of the aforementioned backlight module. Therefore, the implementation of the display device can refer to the aforementioned The implementation of the backlight module will not be repeated here.
  • the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, and a navigator.
  • a display function such as a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, and a navigator.
  • Other essential components of the display device should be understood by those of ordinary skill in the art, and will not be repeated here, nor should it be used as a limitation of the present disclosure.
  • FIG. 22 shows a method flowchart of a method for manufacturing a backlight module provided by an embodiment of the present disclosure, and the manufacturing method includes:
  • S101 Disposing a plurality of adhesive tapes independent of each other on the side of each frame of the fixing frame facing the first optical element, wherein the fixing frame is arranged around the first optical element, and the fixing frame includes oppositely arranged adhesive tapes. a first frame and a second frame, and a third frame and a fourth frame arranged oppositely;
  • step S101 to step S2102 is as follows:
  • a plurality of adhesive tapes 30 that are independent of each other are arranged on the side of each frame of the fixing frame facing the first optical element 10 .
  • the fixing frame 20 is arranged around the first optical element 10 for a circle.
  • the frame 20 includes a first frame 201 and a second frame 202 arranged oppositely, and a third frame 203 and a fourth frame 204 arranged oppositely.
  • the first optical element 10 and the fixing frame are fixed by the adhesive tape 30 .
  • 20 are fixed together, specifically, the first optical element 10 is placed above the adhesive tape 30, so that the stability of the backlight module is ensured by the adhesive tape 30.
  • step S102 the method further includes:
  • the plurality of mounting ears provided on the fixing frame are inserted through the plurality of mounting ear holes opened on the second optical element and the third optical element, The second optical element and the third optical element are fixed together with the fixing frame.
  • the stability between the first optical element 10 and the fixing frame 20 is ensured , and then, through the plurality of mounting ears 50 provided on the fixing frame 20, the second optical element 102 and the plurality of mounting ear holes 500 opened on the third optical element 103 are penetrated, and the second optical element 102 and the third optical element 103 are opened.
  • the optical element 102 and the third optical element 103 are fixed together with the fixing frame 20 , thereby ensuring the stability between the second optical element 102 and the third optical element 103 and the fixing frame 20 , the use performance of the backlight module is improved.
  • step S101 before disposing a plurality of adhesive tapes independent of each other on the side of each frame of the fixed frame facing the first optical element, the method further includes:
  • S202 Fix the hanging ears to the groove area on the first frame and the second frame, the groove on at least one frame of the third frame and the fourth frame The area where the hanger is not provided, wherein the extension length of the first frame and the extension length of the second frame are both the first extension length, the extension length of the third frame and the extension of the fourth frame The lengths are all second extension lengths, and the first extension length is greater than the second extension length.
  • step S201 to step S202 is as follows:
  • the adhesive tapes 30 Before disposing a plurality of mutually independent adhesive tapes 30 on the side of each frame of the fixing frame 20 facing the first optical element 10 , firstly disposing the adhesive tapes 30 on each frame of the fixing frame 20 for fixing the hanger the groove area 40 of the ear 50, and then fix the hanging lug 50 in the groove area 40 on the first frame 201 and the second frame 202, the third frame 203 and the
  • the mounting lugs 50 are not provided in the groove area 40 on at least one frame of the fourth frame 204 , and only the groove area 40 on the side of the groove area 40 is reserved.
  • the mounting lugs 50 on the upper part realize the limiting and fixing between the second optical element 102 and the third optical element 103 and the fixing frame 20 , which ensures the use performance of the backlight module.
  • the extension length of the first frame 201 and the extension length of the second frame 202 are both the first extension length
  • the extension length of the third frame 203 and the extension length of the fourth frame 204 are both the first extension length.
  • Two extension lengths, the first extension length is greater than the second extension length, that is, the hanging lugs 50 may be provided only in the groove area 40 on the long side of the fixing frame 20, while the The two short sides of the fixing frame 20 may not be provided with the mounting lugs 50 and only the groove area 40 may remain.
  • the prism sheet 102 and the diffuser The sheet 103 can expand along the side where the mounting lugs 50 are not provided. Compared with the mounting lugs 50 on all sides of the fixed frame 20, the reserved expansion space is increased and the mounting lugs 50 are avoided.
  • the film is not wrinkled due to the interference with the related film in the first optical element 10, and the display quality is improved.
  • step S101 a plurality of adhesive tapes that are independent of each other are arranged on the side of each frame of the fixed frame facing the first optical element, including:
  • At least one of the adhesive tapes is arranged in the space between the first groove area 401 and the second groove area 402 at both ends of any frame, wherein the adhesive tape is arranged on the fixed frame facing the first optical side of the element.
  • step S101 a plurality of independent adhesive tapes are arranged on the side of each frame of the fixed frame facing the first optical element 10, including:
  • step S202 fixing the hanging lugs on the groove regions 40 on the first frame and the second frame
  • the method further includes:
  • Silicone rubber 60 is filled in the groove area 40 of the third frame 203 and the fourth frame 204 where the mounting lugs are not provided, wherein the thickness of the silicone rubber 60 is equal to the depth of the groove area.
  • the silica gel 60 can be directly filled into the third frame 203 and the fourth frame 204 are not provided in the groove area 40 of the hanging lug 50, wherein the thickness of the silica gel 60 is equal to the depth of the groove area 40, so that in the subsequent After the adhesive tape 30 is attached to the fixing frame 20 , the positioning between the diffuser plate 101 and the fixing frame 20 can avoid the overhang between the adhesive tape 30 and the groove area 40 . The resulting adhesive tape 30 is broken, which ensures the stability between the diffuser plate 101 and the fixing frame 20, thereby ensuring the use performance of the backlight module.
  • the specific opening of the groove region 40 and the specific setting of the adhesive tape 30 can be set by referring to the methods in the foregoing embodiments, which will not be described in detail here.
  • Embodiments of the present disclosure provide a backlight module, a method for manufacturing the same, and a display device, wherein the backlight module includes a first optical element 10 , a fixed frame 20 disposed around the first optical element 10 , the The fixed frame 20 includes a first frame 201 and a second frame 202 arranged oppositely, and a third frame 203 and a fourth frame 204 arranged oppositely. Each frame of the fixed frame 20 faces one of the first optical elements 10 . Each side is provided with a plurality of adhesive tapes 30 which are independent of each other and extend along the extension direction of the side. The first optical element 10 is fixed with the fixing frame 20 through the adhesive tapes 30.
  • the side of the strip frame facing the first optical element 10 is provided with a plurality of adhesive tapes 30 that are independent of each other and extend along the extension direction of the edges. It is fixed with the fixing frame 20 to ensure the stability of the backlight module.
  • the adhesive tapes 30 are independent of each other, the adhesive force between the adhesive tapes 30 and the fixing frame 20 is reduced. , and the property of the tape to produce recoverable deformation in response to the expansion and contraction of the optical element is improved.
  • the resistance of the tape 30 to recoverable deformation is relatively small, which can avoid the first optical element 10.
  • the corrugation of the corresponding diaphragm in the optical element 10 is poor, thereby improving the display quality.

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Abstract

一种背光模组，包括：第一光学元件（10）；围绕第一光学元件（10）设置一周的固定框架（20），其中，固定框架（20）包括相对设置的第一边框（201）和第二边框（202），以及相对设置的第三边框（203）和第四边框（204），固定框架（20）的每条边框面向第一光学元件（10）的一侧均设置有多个彼此独立且沿着边的延伸方向延伸的胶带（30），第一光学元件（10）通过胶带（30）与固定框架（20）固定在一起。用于避免膜片褶皱不良，提高显示品质。还提供了背光模组的制作方法及显示装置。

Description

一种背光模组、其制作方法及显示装置
相关申请的交叉引用
本申请要求在2021年03月05日提交中国专利局、申请号为202110243734.2、申请名称为“一种背光模组、其制作方法及显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及显示技术领域，特别涉及一种背光模组、其制作方法及显示装置。
背景技术
现有显示装置中，光学膜材极易因热胀冷缩导致膜片褶皱，进而出现明暗不均的现象。尤其是在大尺寸显示模组中，由于膜片面积大，所需的膨胀空间也大，为了兼顾屏占比，膜片膨胀往往受限于空间从而出现膜片褶皱的不良现象。
可见，现有显示装置存在膜片褶皱不良，显示品质较低的技术问题。
发明内容
本公开提供了一种背光模组、其制作方法及显示装置，用于避免膜片褶皱不良，提高显示品质。
第一方面，本公开实施例提供了一种背光模组，包括：
第一光学元件；
围绕所述第一光学元件设置一周的固定框架，其中，所述固定框架包括相对设置的第一边框和第二边框，以及相对设置的第三边框和第四边框，所述固定框架的每条边框面向所述第一光学元件的一侧均设置有多个彼此独立且沿着边的延伸方向延伸的胶带，所述第一光学元件通过所述胶带与所述固 定框架固定在一起。
在一种可能的实现方式中，所述背光模组包括依次背离所述第一光学元件的第二光学元件和第三光学元件，其中，所述第二光学元件和所述第三光学元件上均开设有多个挂耳孔，通过设置在所述固定框架上的多个挂耳贯穿相应的所述挂耳孔，将所述第二光学元件和所述第三光学元件与所述固定框架固定在一起。
在一种可能的实现方式中，所述第一边框的延伸长度和所述第二边框的延伸长度均为第一延伸长度，所述第三边框的延伸长度和所述第四边框的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度，各个边框上预留有用于固定所述挂耳的凹槽区域，所述第一边框和所述第二边框上的所述凹槽区域均设置有所述挂耳，所述第三边框和所述第四边框中的至少一边框上的所述凹槽区域未设置所述挂耳。
在一种可能的实现方式中，任一边框对应的所述挂耳孔沿该边框长度方向的尺寸，沿背离所述固定框架的中心位置的方向逐渐增大。
在一种可能的实现方式中，任一所述凹槽区域沿所在边框的延伸长度为一预设长度，在任一边上任两个相邻所述凹槽区域间的间距范围为(100mm，300mm)。
在一种可能的实现方式中，在所述第一边框上，任两个相邻所述凹槽区域之间的间距为均为第一预设距离，在所述第二边框上，所述第二边框上，任两个相邻所述凹槽区域之间的间距均为与所述第一预设距离不同的第二预设距离。
在一种可能的实现方式中，在所述第一边框上，背离所述固定框架的中心位置的两个相邻所述凹槽区域之间的间距，大于靠近所述固定框架的中心位置的两个相邻所述凹槽区域之间的间距，在所述第二边框上，任两个相邻所述凹槽区域之间的间距为同一预设距离。
在一种可能的实现方式中，在任一边框上，至少包括分别设置在该边两端点的第一凹槽区域和第二凹槽区域，至少一个所述胶带设置在所述第一凹 槽区域和所述第二凹槽区域之间的间距内。
在一种可能的实现方式中，所述胶带至少部分与所述第一凹槽区域贴附，以及所述胶带至少部分与所述第二凹槽区域贴附。
在一种可能的实现方式中，在任一边框上，任一所述胶带的长度范围为[a，2a+d]，其中，a表示任两个相邻所述凹槽区域之间的间距，d表示所述凹槽区域沿所在边框的延伸长度。
在一种可能的实现方式中，在任一边框上，任两个相邻所述胶带间的间距范围为[a+2d，2a+3d]，其中，a表示任两个相邻所述凹槽区域之间的间距，d表示所述凹槽区域沿所在边框的延伸长度。
在一种可能的实现方式中，在所述固定框架上，所述胶带对应的且未设置所述挂耳的所述凹槽区域内填充有硅胶，其中，所述硅胶的厚度等于所述凹槽区域的深度。
第二方面，本公开实施例提供了一种显示装置，包括：如上面所述的背光模组。
第三方面，本公开实施例提供了一种背光模组的制作方法，包括：
在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带，其中，所述固定框架围绕所述第一光学元件设置一周，所述固定框架包括相对设置的第一边框和第二边框，以及相对设置的第三边框和第四边框；
通过所述胶带将所述第一光学元件与所述固定框架固定在一起。
在一种可能的实现方式中，若所述背光模组包括依次背离所述第一光学元件设置的第二光学元件和第三光学元件，则在所述通过所述胶带将所述第一光学元件与所述固定框架固定在一起之后，所述方法还包括：
通过设置在所述固定框架上的多个挂耳贯穿所述第二光学元件和所述第三光学元件上所开设的多个挂耳孔，将所述第二光学元件和所述第三光学元件与所述固定框架固定在一起。
在一种可能的实现方式中，在所述在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带之前，所述方法还包括：
在所述固定框架的每条边框上开设用于固定所述挂耳的凹槽区域；
将所述挂耳固定在所述第一边框和所述第二边框上的所述凹槽区域，所述第三边框和所述第四边框中的至少一边框上的所述凹槽区域未设置所述挂耳，其中，所述第一边框的延伸长度和所述第二边框的延伸长度均为第一延伸长度，所述第三边框的延伸长度和所述第四边框的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度。
在一种可能的实现方式中，所述在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带，包括：
将至少一个所述胶带设置在任一边框的两端点的第一凹槽区域和第二凹槽区域之间的间距内，其中，所述胶带设置在所述固定框架面向所述第一光学元件的一侧。
在一种可能的实现方式中，所述在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带，包括：
将所述胶带的至少部分与所述第一凹槽区域贴附，以及将所述胶带的至少部分与所述第二凹槽区域贴附。
在一种可能的实现方式中，在所述将所述挂耳固定在所述第一边框和所述第二边框上的所述凹槽区域之后，所述方法还包括：
在所述第三边框和所述第四边框中未设置所述挂耳的所述凹槽区域内填充硅胶，其中，所述硅胶的厚度等于所述凹槽区域的深度。
附图说明
图1为本公开实施例提供的一种背光模组的其中一种俯视结构示意图；
图2为沿图1中MM方向的其中一种剖面结构示意图；
图3为本公开实施例提供的一种背光模组的其中一种俯视结构示意图；
图4为沿图3中NN方向的其中一种剖面结构示意图；
图5为图3中虚线框标注区域A对应结构的其中一种局部放大图；
图6为本公开实施例提供的一种背光模组的其中一种俯视结构示意图；
图7为沿图6中OO方向的其中一种剖面结构示意图；
图8为图3中虚线框标注区域B对应结构的其中一种局部放大图；
图9为本公开实施例提供的一种背光模组的其中一种俯视结构示意图；
图10为沿图9中方向SS的其中一种剖面结构示意图；
图11为本公开实施例提供的一种背光模组的其中一种俯视结构示意图；
图12为沿图11中方向PP的其中一种剖面结构示意图；
图13为沿图11中PP方向的另外一种剖面结构示意图；
图14为本公开实施例提供的一种背光模组中胶带和设置在凹槽区域内的挂耳之间的相对位置关系示意图；
图15为本公开实施例提供的一种背光模组中胶带和设置在凹槽区域内的挂耳之间的相对位置关系示意图；
图16为本公开实施例提供的一种背光模组中胶带和设置在凹槽区域内的挂耳之间的相对位置关系示意图；
图17为本公开实施例提供的一种背光模组中胶带和设置在凹槽区域内的挂耳之间的相对位置关系示意图；
图18为本公开实施例提供的一种背光模组中胶带和设置在凹槽区域内的挂耳之间的相对位置关系示意图；
图19为沿图6中OO方向的另外一种剖面结构示意图；
图20为图19中胶带断裂的其中一种结构示意图；
图21为本公开实施例提供的一种背光模组中胶带的其中一种结构示意图；
图22为本公开实施例提供的一种背光模组的制作方法的方法流程图；
图23为本公开实施例提供的一种背光模组的制作方法中在步骤S101之前的方法流程图。
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。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。并且在不冲突的情况下，本公开中的实施例及实施例中的特征可以相互组合。基于所描述的本公开的实施例，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他实施例，都属于本公开保护的范围。
除非另外定义，本公开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。本公开中使用的“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。
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。
在现有技术中，膜片褶皱是显示模组开发中常见不良之一。膜片褶皱不良的主要表现为点灯状态下，侧视角观察下，显示模组呈现明亮不均的现象。尤其是在正常点屏或温湿度信赖性测试中，常由于背光膜片基本为有机树脂产品，多具备吸湿吸热膨胀特性，因而在背光模组设计时会预留一定的膜片膨胀空间。特别是在大尺寸显示模组中，背光膜片面积往往较大，相应地，背光膜片所需的膨胀空间也比较大。为了兼顾较高的屏占比，对膨胀空间的预留往往有一定的限制，这样的话，膜片膨胀往往受限于空间从而出现膜片褶皱的不良现象。
在现有膜片褶皱的不良现象中，现有背光模组中的扩散板翘曲原因往往在于本身横向尺寸过大，且固定方式采用全胶固定，由于扩散板四周受力过大，尤其是在高温高湿信赖性测试中，四周膨胀空间受限，膨胀往往集中在扩散板内部。此外，由于背光模组中的膜片的横向尺寸往往较大，所预留的膨胀量不足，在高温高湿信赖性测试中，膜片膨胀，将与限位挂耳处发生干涉，从而出现膜片褶皱不良，进而降低显示品质。
鉴于此，本公开实施例提供了一种背光模组、其制作方法及显示装置，用于避免膜片褶皱不良，提高显示品质。
结合图1和图2所示，其中，图1为本公开实施例提供的一种背光模组的其中一种俯视结构示意图，图2为沿图1中MM方向的其中一种剖面结构示意图，具体来讲，所述背光模组包括：
第一光学元件10；
围绕所述第一光学元件10设置一周的固定框架20，其中，所述固定框架20包括相对设置的第一边框201和第二边框202，以及相对设置的第三边框203和第四边框204，所述固定框架20的每条边框面向所述第一光学元件10的一侧均设置有多个彼此独立且沿着边的延伸方向延伸的胶带30，所述第一光学元件10通过所述胶带30与所述固定框架20固定在一起。值得注意的是，这里的所述第一边框201、所述第二边框202、所述第三边框203和所述第四边框204可以都是属于所述固定框架20的边缘部分。
在本公开实施例中，所述固定框架20的材质可以是铝，还可以是其它的金属材质，在此不做限定。所述固定框架20包括相对设置的第一边框201和第二边框202，以及相对设置的第三边框203和第四边框204，所述固定框架20围绕所述第一光学元件10设置一周，在所述固定框架20的每条边框面向所述第一光学元件10的一侧设置有多个彼此独立且沿着边的延伸方向延伸的胶带30，其中，每个胶带30的延伸长度可以是相同的，还可以是不同的，具体地可以根据实际应用需要来设置，此外，每条边框上所设置的胶带30的个数可以是相同的个数，还可以是不同的个数，具体地，根据实际应用中相应边的具体长度以及每条胶带30的长度来设置。
在具体实施过程中，通过彼此独立的胶带30将所述第一光学元件10与所述固定框架20固定在一起，从而保证了所述背光模组的稳固性。此外，由于所述固定框架20上每条边框上所设置的胶带30间的彼此独立，相较于现有技术中第一光学元件10与固定框架20间的全胶贴合来说，所述胶带30与所述固定框架20间的粘合力变小，而且所述胶带30对应光学元件膨胀和收 缩而产生可回复变形的性质提升，在所述第一光学元件10发生膨胀时，借助所述胶带30发生可回复变形的阻力相对较小，所述第一光学元件10将相较于所述固定框架20发生一定的偏移，该偏移可以是沿背离所述固定框架20的中心位置的方向偏移，此外，在所述第一光学元件10发生膨胀时，具有一定厚度的所述胶带30将随之发生微量形变，所述第一光学元件10将随着所述胶带30形变的方向发生膨胀，如此一来，弱化了所述第一光学元件10靠近所述固定框架20的中心位置处的膨胀程度，从而避免了第一光学元件10对应膜片的褶皱不良，进而提高了显示品质。对于所述第一光学元件10发生收缩时的情况类似，不再赘述。
在本公开实施例中，结合图3至图5所示，其中，如图3所示为背光模组的其中一种俯视结构示意图，图3中波浪线所处的左上角区域为所述固定框架20上去除了相关光学膜层的结构，如图4所示为沿图3中NN方向的其中一种剖面结构示意图，如图5所示为图3中虚线框标注区域A对应结构的其中一种局部放大图。具体来讲，所述背光模组包括依次背离所述第一光学元件10的第二光学元件102和第三光学元件103，其中，所述第二光学元件102和所述第三光学元件103上均开设有多个挂耳孔500，通过设置在所述固定框架20上的多个挂耳50贯穿相应的所述挂耳孔500，将所述第二光学元件102和所述第三光学元件103与所述固定框架20固定在一起。
在具体实施过程中，所述背光模组可以采用直下式背光源的设置方式，所述第一光学元件10可以是扩散板，所述第二光学元件102可以是棱镜片，所述第三光学元件103可以是扩散片，这样的话，所述第一光学元件10的厚度大于所述第三光学元件103的厚度。所述第一光学元件10通过设置在所述固定框架20上的所述胶带30与所述固定框架20固定在一起，通过设置在所述固定框架20上的所述胶带30保证了所述第一光学元件10在所述固定框架20上的稳固性，进一步地保证了所述背光模组的稳固性。所述第二光学元件102和所述第三光学元件103通过设置在所述固定框架20上的多个挂耳50贯穿相应的所述挂耳孔500，与所述固定框架20固定在一起，其中，所述固定 框架20上所设置的挂耳50的具体个数可以根据实际应用来设置，在此不做限定。在具体实施过程中，通过设置在所述固定框架20上的所述挂耳50贯穿相应元件的所述挂耳孔500，保证了所述第二光学元件102和所述第三光学元件103在所述固定框架20上的稳固性，进一步地保证了所述背光模组的稳固性。
在具体实施过程中，所述背光模组还可以通过所包括的多层膜层来对所述背光模组中来自背光源的光线进行相应的调制，进而保证背光模组的使用性能。其中，在所述背光模组包括量子点膜时，通过所述量子点膜可以使得来自所述背光源的色彩光线更加纯净，在将所述背光模组应用于液晶显示装置之后，保证了所述液晶显示装置的显示品质。此外，在实际应用中，本领域技术人员还可以根据实际使用需要来选择所述背光模组所包括的膜材，比如，所述背光模组除了可以包括依次背离所述固定框架20的扩散板、棱镜片和扩散片之外，还可以包括反射片、量子点膜等，在此不做限定。相应地，本领域技术人员还可以根据实际使用需要来选择所述背光模组中各光学膜层间的先后顺序，在此不做限定。
在本公开实施例中，结合图6和图7所示，其中，图6所示为所述背光模组的其中一种俯视结构示意图，图7为沿图6中OO方向的其中一种剖面结构示意图，具体来讲，所述第一边框201的延伸长度和所述第二边框202的延伸长度均为第一延伸长度，所述第三边框203的延伸长度和所述第四边框204的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度，各个边框上预留有用于固定所述挂耳50的凹槽区域40，所述第一边框201和所述第二边框202上的所述凹槽区域40均设置有所述挂耳50，所述第三边框203和所述第四边框204中的至少一边框上的所述凹槽区域40未设置所述挂耳50。
在具体实施过程中，所述第一边框201的延伸长度和所述第二边框202的延伸长度均为第一延伸长度，所述第三边框203的延伸长度和所述第四边框204的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸 长度，比如，所述第一延伸长度为2.2m，所述第二延伸长度为1.2m。对本领域技术人员来说，可以根据所述背光模组的实际尺寸来设置所述固定框架20各个边框的延伸长度，在此不做限定。此外，所述固定框架20上各个边框上预留有与用于固定所述挂耳50的凹槽区域40，所述第一边框201和所述第二边框202上的所述凹槽区域40均设置有所述挂耳50，所述第三边框203和所述第四边框204中的至少一边框上的所述凹槽区域40未设置所述挂耳50，如图6所示，所述第三边框203上未设置挂耳50，所述第四边框204上也未设置挂耳50；再比如，还可以是所述第三边框203上未设置挂耳50，所述第四边框204上设置有挂耳50；再比如，还可以是所述第四边框204上未设置挂耳50。当然，本领域技术人员可以根据对所述背光模组的横竖需求来设置挂耳50的实际分布情况，在此不做限定。其中，在所述背光模组沿长边延伸方向竖直放置时，可以在所述固定框架20上背离放置面的短边上设置所述挂耳50，从而避免所述第一光学元件10自身重力的影响，提高所述背光模组的稳固性。
在具体实施过程中，在所述第二光学元件102和所述第三光学元件103发生膨胀时，由于相应的光学元件可以向未设置有所述挂耳50的一边框自由收缩，所述第二光学元件102和所述第三光学元件103沿未设置有所述挂耳50的一边框膨胀，这样的话，由于未设置有所述挂耳50的一边框为所述固定框架20的短边框，在所述第二光学元件102和所述第三光学元件103发生膨胀时，所述第二光学元件102和所述第三光学元件103可以向未设置有所述挂耳50的一边框自由收缩，尤其是相应光学元件的长边可以向短边方向自由收缩，如此一来，极大程度地减弱了所述第二光学元件102和所述第三光学元件103与所述挂耳50间的干涉程度，从而减弱了所述第二光学元件102和所述第三光学元件103的褶皱程度，避免了膜片褶皱不良的现象，进一步地保证了显示品质。
在本公开实施例中，如图8所示为图3中虚线框标注区域B对应结构的其中一种局部放大图，具体来讲，任一边框对应的所述挂耳孔500沿该边框 长度方向的尺寸，沿背离所述固定框架20的中心位置的方向逐渐增大。在具体实施过程中，各个所述挂耳50沿该边框长度方向的尺寸大小相等，并非完全相等，可以是近似相等，大致相等，任一所述挂耳孔500沿该边框长度方向的尺寸大于相应的所述挂耳50沿该边框长度方向的尺寸，这样的话，可以保证所述挂耳50贯穿所述挂耳孔500，进而对相应的光学元件进行固定，从而保证了所述背光模组的稳固性。此外，在具体实施过程中，由于任一边框对应的所述挂耳孔500沿该边框长度方向的尺寸，沿背离所述固定框架20的中心位置的方向逐渐增大，也就是说，所述挂耳孔500为所述挂耳50所预留的空间逐渐增大，在所述第二光学元件102和所述第三光学元件103发生膨胀时，在所述挂耳50将所述第二光学元件102和所述第三光学元件103与所述固定框架固定在一起的同时，由于沿背离所述固定框架的中心位置方向的所述挂耳孔500所预留的空间逐渐增大，所述第二光学元件102和所述第三光学元件103可以在所述挂耳孔500所预留的空间内自由活动，从而避免了相应光学元件与所述挂耳之间干涉，避免了膜片褶皱不良的现象，进一步地保证了显示品质。
在本公开实施例中，任一所述凹槽区域40沿所在边框的延伸长度为一预设长度，在任一边框上任两个相邻所述凹槽区域40间的间距范围为(100mm，300mm)，比如，在任一边框上任两个相邻所述凹槽区域40间的间距范围为150mm，再比如，间距范围为200mm。如此一来，可以防止对所述背光模组中的膜片的过定位，还可以避免因间距范围设置过大，不能对所述背光模组中的膜片进行有效固定，从而导致所述背光模组中的膜片脱落。
在本公开实施例中，所述凹槽区域40可以有以下两种设置方式，但又不仅限于以下两种设置方式。
第一种设置方式对应的所述背光模组的俯视结构图如图9所示，具体来讲，在所述第一边框201上，任两个相邻所述凹槽区域40之间的间距均为第一预设距离，在所述第二边框202上，任两个相邻所述凹槽区域40之间的间距均为与所述第一预设距离不同的第二预设距离。在具体实施过程中，若所 述凹槽区域40设置有所述挂耳50，则两所述凹槽区域40之间的间距也就是对应两所述挂耳50之间的间距。如图9所示，所述第一预设距离为b1，所述第二预设距离为b2，所述第一预设距离b1小于所述第二预设距离b2，所述第一边框201上所设置的所述挂耳50的数量大于所述第二边框202上所设置的所述挂耳50的数量。值得注意的是，这里的均为同一所述第一预设距离的情况，均为同一所述第二预设距离的情况，并非完全相同，可以是近似相同，大致相同。如此一来，所述第一边框201上的所有的所述凹槽区域40可以呈轴对称分布，所述第二边框202上的所有的所述凹槽区域40可以呈轴对称分布。相应地，由于所述第一边框201上任两个相邻所述凹槽区域40之间的所述第一预设距离，与所述第二边框202上任两个相邻所述凹槽区域40之间的所述第二预设距离不同，所述第一边框201上所有的所述凹槽区域40可以与所述第二边框202上所有的所述凹槽区域呈非对称分布，如此一来，可以保证相关膜片的防呆设计，保证了相关膜片在所述固定框架20上的安装速度。
在具体实施过程中，若采用上述第一种设置方式来设置所述第一边框201和所述第二边框202上的所述凹槽区域40，所述第三边框203上的所有的所述凹槽区域40和所述第四边框204上的所有的所述凹槽区域40可以呈轴如图10的轴对称分布，此外，还可以根据实际应用需要分别设置所述第三边框203上两个相邻所述凹槽区域40之间的间距，以及所述第四边框204上两个相邻所述凹槽区域40之间的间距，所设置的间距可以是与所述第一预设距离相同或者不同，具体可以根据实际应用需要来设置，在此不做限定。
在具体实施过程中，对于图9所示的所述固定框架20上所述第一边框201上任两个相邻所述凹槽区域40之间的间距均为第一预设距离的情况，结合图10所示的沿图9中方向SS的其中一种剖面结构示意图来说，该边上设置有m个所述凹槽区域40，相应地，设置在所述凹槽区域40内的挂耳50编号依次为1,2，……，m，m为大于3的整数，考虑到工艺误差，该边上所述凹槽区域40之间的间距的关系为：a 1≈a x≈a m-1，其中，“≈”表示近似相等，大致相等，编号为1的挂耳50和编号为2的挂耳50之间的间距为a 1，位于所在 边框中心位置的两挂耳50之间的间距为a x，编号为m的挂耳50和编号为(m-1)的挂耳50之间的间距为a m-1，也就是说，该边上所有的所述凹槽区域40呈轴对称分布。
第二种设置方式对应的所述背光模组的俯视结构图如图11所示，具体来讲，在所述第一边框201上，背离所述固定框架20的中心位置的两个相邻所述凹槽区域40之间的间距，大于靠近所述固定框架20的中心位置的两个相邻所述凹槽区域40之间的间距，在所述第二边框202上，任两个相邻所述凹槽区域40之间的间距为同一预设距离。如此一来，所述第一边框201上的所有的所述凹槽区域40和所述第二边框202上的所有的所述凹槽区域40呈非轴对称分布，所述第一边框201上的所有的所述凹槽区域40可以呈轴对称分布，所述第二边框202上的所有的所述凹槽区域40可以呈轴对称分布，如图11所示。此外，在第二种设置方式中，所述第三边框203上的所有的所述凹槽区域40和所述第四边框204上的所有的所述凹槽区域40可以呈轴对称分布，还可以呈非轴对称分布。如图11所示，所述第一边框201上的所述凹槽区域40的数量和所述第二边框202上的所述凹槽区域40的数量均为九个，所述第三边框203上的所述凹槽区域40的数量和所述第三边框204上的所述凹槽区域40的均为四个，当然，本领域的技术人员还可以根据实际应用来设置各个边框上的所述凹槽区域40，在此不做限定。
结合图12所示的沿图11中方向PP的剖面结构示意图来说，在采用第二种设置方式时，该边上所述凹槽区域40之间的间距的关系为a x＜a 1≈a m-1，在具体实施过程中，可以对所述第一边框201上的所述凹槽区域40进行轴对称设计。这样的话，由于所述第一边框201上所有的所述凹槽区域40和所述第二边框202上所有的所述凹槽区域40之间呈非轴对称分布，在所述凹槽区域40内设置所述挂耳50之后，可以将所述第一光学元件10中的相关膜片通过相应的挂耳50快速地安装在所述背光模组中，此外，整个所述固定框架20上所有的所述凹槽区域40的非轴对称分布还可以保证相关膜片的防呆设计，在将挂耳50设置在相应的凹槽区域之后，便于将相关膜片安装在所述固定框 架20上，提高了所述背光模组的制作效率。
另外，在所述第一边框201上，背离所述固定框架20的中心位置的两个相邻所述凹槽区域40之间的间距，大于靠近所述固定框架20的中心位置的两个相邻所述凹槽区域40之间的间距，这样的话，在将所述挂耳50安装至相应的所述凹槽区域40之后，背离所述固定框架20的中心位置处的挂耳50之间预留有较为充足的膨胀空间，在所述第一光学元件10发生膨胀时，可以保证所述第一光学元件10在背离所述固定框架20的中心位置处的自由膨胀，同时有效避免边缘位置处挂耳50与相应膜片间的干涉，从而能够有效减轻针对相应膜片的内部膨胀，进一步地避免了膜片褶皱不良的现象，提高了显示品质。
当然，除了上述提到的两种设置方式来设计所述固定框架20上的所述凹槽区域40之外，本领域技术人员还可以根据实际应用需要来采用其它方式来设置所述凹槽区域40，比如，设置在任一边框上的任两个相邻所述挂耳50之间的间距也为同一所述预设距离。其中，本领域技术人员可以根据实际应用需要来设置所述预设距离的具体数值，在此不做限定了。
在本公开实施例中，结合图11和图13来说明一下所述背光模组中的胶带30分布情况，其中，图13所示为沿图11中PP方向的另外一种剖面结构示意图，具体来讲，在任一边框上，至少包括分别设置在该边两端点的第一凹槽区域401和第二凹槽区域402，至少一个所述胶带30设置在所述第一凹槽区域401和所述第二凹槽区域402之间的间距内。也就是说，将至少一个胶带30设置在位于单边的两端点的两凹槽区域之间，在具体实施过程中，将至少一个所述胶带30设置在所述第一凹槽区域401和所述第二凹槽区域402之间的间距内，如图13所示，将三个胶带30贴附在图13中的第一边框201上的第一凹槽区域401和第二凹槽区域402之间，如此一来，即便是在所述第一边框201上的各个凹槽区域内设置了相应的挂耳50，由于胶带30仅设置在两端点的凹槽区域之间，因此预留出了较为充足的角落膨胀量，进一步地避免了膜片向内部膨胀的褶皱不良，保证了显示品质。
在本公开实施例中，仍结合图13所示，所述胶带30至少部分与所述第一凹槽区域401贴附，以及所述胶带30至少部分与所述第二凹槽区域402贴附，也就是说，任一边框上位于两端点的凹槽区域内必须贴附有胶带30，如此一来，在将所述第一光学元件10通过所述胶带30贴附在所述固定框架20上之后，避免了所述扩撒板的边角翘起，进一步保证了所述背光模组的稳定性，提高了所述背光模组的使用性能。
在本公开实施例中，在任一边框上，任一所述胶带30的长度范围为[a，2a+d]，其中，a表示任两个相邻所述凹槽区域40之间的间距，d表示所述凹槽区域40沿所在边框的延伸长度。在具体实施过程中，在任一边框上，任一所述胶带30的长度大于等于a，且小于等于(2a+d)，同一条边上的各个胶带30的长度可以是相同的长度，还可以是不同的长度，具体地根据实际应用需要来设置。其中，a表示任两个相邻所述凹槽区域40之间的间距，在所述凹槽区域40内设置有挂耳50时，a还可以表示两个相邻所述挂耳50之间的间距。比如，在所述胶带30长度为a时，所述胶带30和设置在所述凹槽区域40内的挂耳50之间的相对位置关系可以是如图14所示的情况，还可以是如图15所示的情况。再比如，在所述胶带30长度为1.5a时，所述胶带30和设置在所述凹槽区域40内的挂耳50之间的相对位置关系可以是如图16所示的情况。再比如，在所述胶带30长度为(2a+d)时，所述胶带30和设置在所述凹槽区域40内的挂耳50之间的相对位置关系可以是如图17所示的情况，还可以是如图18所示的情况。此外，对本领域技术人员来说，还可以根据所述固定框架20单边的延伸长度，单个挂耳50的长度以及相邻两个凹槽区域之间的间距的实际设置情况来设置所述胶带30的长度，在此不再详述了。
此外，在具体实施过程中，所述凹槽区域40沿所在边框的延伸长度相较于任两个相邻所述凹槽区域40之间的间距往往较小，在设置所述胶带30的过程中，可以直接以任两个相邻所述凹槽区域40之间的间距为参照来设置，忽略所述凹槽区域40沿所在边框的延伸长度，比如，直接将所述胶带30的长度设置为a，或者将所述胶带30的长度设置为2a，从而提高了所述胶带30 的贴附速度，进而提高了所述背光模组的制作效率。
在本公开实施例中，在任一边框上，任两个相邻所述胶带30间的间距范围为[a+2d，2a+3d]，其中，a表示任两个相邻所述凹槽区域40之间的间距，d表示所述凹槽区域40沿所在边框的延伸长度。在具体实施过程中，在任一边框上，所贴附的任两个相邻胶带30之间的间距大于等于(a+2d)，且小于等于(2a+3d)，同一条边上的所有两个相邻所述胶带30之间的间距可以相同的间距，还可以是不同的间距，具体地根据实际应用需要来设置。比如，每条边框上两相邻所述胶带30之间的间距均为(a+2d)，所述第一边框201和所述第二边框202上所述胶带30的长度为(2a+d)，所述第三边框203和所述第四边框204上所述胶带30的长度为1.5a。在具体实施过程中，所述固定框架20的同一条边上任两个相邻胶带30之间的间距可以设置为(a+2d)，还可以设置为(2a+3d)，在将所述扩散板101经由胶带30贴附在所述固定框架20上之后保证了所述扩散板101与所述固定框架20的稳固性，同时兼顾了所述扩散板101的膨胀预留量，进而保证了所述背光模组的使用性能。此外，本领域技术人员还可以根据实际应用需要来设置每条边框上相应所述胶带30的长度和所述胶带30之间的间距，在此不再详述了。
在本公开实施例中，图19所示为沿图6中OO方向的另外一种剖面结构示意图，具体来讲，在所述固定框架20上，所述胶带30对应的且未设置所述挂耳50的所述凹槽区域40内填充有硅胶60，其中，所述硅胶60的厚度等于所述凹槽区域40的深度。在具体实施过程中，由于所述第三边框203和所述第四边框204中的至少一边框上的所述凹槽区域40未设置所述挂耳50，这样的话，在后续将所述胶带30贴附在未设置有所述挂耳50的所述凹槽区域40所对应的位置时，特别是将所述第一光学元件10与所述固定框架20进行对位时，由于所述第一光学元件10可能出现撕扯导致所述胶带30在所述固定框架20上对应悬空位置处发生断裂，所述胶带30的断裂情况可以是如图20所示，断裂部位如图20中虚线框C所示，从而影响所述胶带30对所述第一光学元件10的固定性能，进而降低了所述背光模组的稳固性。
在具体实施过程中，可以在所述固定框架20上，用于贴附所述胶带30的位置所对应的未设置所述挂耳50的所述凹槽区域40内预先填充硅胶60(Rubber)，所述硅胶60的厚度等于对应的所述凹槽区域40的深度，这样的话，由于所填充的硅胶60的表面往往为较为光滑的表面，所述硅胶60与所贴附的所述胶带30的结合较为良好，可避免撕扯第一光学元件10导致所述胶带30断裂，保证了所述胶带30的完整性，进而保证了所述背光模组的使用性能。
在本公开实施例中，为了提高所述背光模组的稳固性，所述胶带30可以是采用无纺布亚克力胶水系列双面胶，如图21所示为所述胶带30的其中一种结构示意图，具体来讲，所述胶带30包括依次层叠设置的离型膜301、第一层亚克力胶302、无纺布303和第二层亚克力胶304，在使用过程中，将所述离型膜301撕掉，直接贴附在所述固定框架20上即可，整个贴附过程更方便快捷，此外，所述双面胶使用成本较低，且粘性较好，可以有效保证所述背光模组的稳固性，进而保证所述背光模组的使用性能。
基于同一发明构思，本公开实施例还提供了一种显示装置，所述显示装置可以为液晶显示装置，该显示装置解决问题的原理与前述背光模组相似，因此该显示装置的实施可以参见前述背光模组的实施，重复之处不再赘述。
在具体实施过程中，本公开实施例提供的显示装置可以为手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。对于该显示装置的其它必不可少的组成部分均为本领域的普通技术人员应该理解具有的，在此就不做赘述，也不应作为对本公开的限制。
基于同样的发明构思，如图22所示为本公开实施例提供的一种背光模组的制作方法的方法流程图，所述制作方法包括：
S101：在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带，其中，所述固定框架围绕所述第一光学元件设置一周，所述固定框架包括相对设置的第一边框和第二边框，以及相对设置的第三边框和第四边框；
S102：通过所述胶带将所述第一光学元件与所述固定框架固定在一起。
在具体实施过程中，步骤S101至步骤S2102的具体实现过程如下：
首先，在固定框架的每条边框面向第一光学元件10的一侧均设置多个彼此独立的胶带30，具体地，所述固定框架20围绕所述第一光学元件10设置一周，所述固定框架20包括相对设置的第一边框201和第二边框202，以及相对设置的第三边框203和第四边框204，然后，通过所述胶带30将所述第一光学元件10与所述固定框架20固定在一起，具体地，将所述第一光学元件10放置在所述胶带30的上方，从而通过所述胶带30保证了所述背光模组的稳固性，后续在对所述背光模组进行高温高湿性能测试的过程中，由于各个所述胶带30彼此独立放置，所述胶带30与所述固定框架20间的粘合力变小，而且所述胶带30对应光学元件膨胀和收缩而产生可回复形变的性质提升，在所述第一光学元件10发生膨胀时，借助所述胶带30发生可回复变形的阻力相对较小可避免第一光学元件10中相应膜片的褶皱不良，进而提高了显示品质。
在本公开实施例中，若所述背光模组包括依次背离所述第一光学元件10设置的第二光学元件102和第三光学元件103，则在步骤S102：通过所述胶带将所述第一光学元件与所述固定框架固定在一起之后，所述方法还包括：
通过设置在所述固定框架上的多个挂耳，将设置在所述固定框架上的多个挂耳贯穿所述第二光学元件和所述第三光学元件上所开设的多个挂耳孔，将所述第二光学元件和所述第三光学元件与所述固定框架固定在一起。
在具体实施过程中，在通过所述胶带30将所述第一光学元件10与所述固定框架20固定在一起之后，保证了所述第一光学元件10与所述固定框架20间的稳固性，然后，通过设置在所述固定框架20上的多个挂耳50，贯穿所述第二光学元件102和所述第三光学元件103上所开设的多个挂耳孔500，将所述第二光学元件102和所述第三光学元件103与所述固定框架20固定在一起，从而保证了所述第二光学元件102和所述第三光学元件103与所述固定框架20之间的稳固性，提高了所述背光模组的使用性能。
在本公开实施例中，如图23所示，在步骤S101：在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带之前，所述方法还包括：
S201：在所述固定框架的每条边框上开设用于固定所述挂耳的凹槽区域；
S202：将所述挂耳固定在所述第一边框和所述第二边框上的所述凹槽区域，所述第三边框和所述第四边框中的至少一边框上的所述凹槽区域未设置所述挂耳，其中，所述第一边框的延伸长度和所述第二边框的延伸长度均为第一延伸长度，所述第三边框的延伸长度和所述第四边框的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度。
在具体实施过程中，步骤S201至步骤S202的具体实现过程如下：
在所述固定框架20的每条边框面向所述第一光学元件10的一侧设置多个彼此独立的胶带30之前，先在所述固定框架20的每条边框上设置用于固定所述挂耳50的凹槽区域40，然后，将所述挂耳50固定在所述第一边框201和所述第二边框202上的所述凹槽区域40内，所述第三边框203和所述第四边框204中的至少一边框上的所述凹槽区域40未设置所述挂耳50，仅保留其边上的所述凹槽区域40，如此一来，通过相应所述凹槽区域40上的所述挂耳50便实现了对所述第二光学元件102和所述第三光学元件103与所述固定框架20之间的限位固定，保证了所述背光模组的使用性能。其中，所述第一边框201的延伸长度和所述第二边框202的延伸长度均为第一延伸长度，所述第三边框203的延伸长度和所述第四边框204的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度，也就是说，可以仅在所述固定框架20的长边上的所述凹槽区域40内设置挂耳50，而在所述固定框架20的两短边上可以不设置所述挂耳50仅保留所述凹槽区域40，这样的话，在所述第一光学元件10发生膨胀时，所述棱镜片102和所述扩散片103可以沿未设置所述挂耳50的一边膨胀，相较于所述固定框架20所有边上均设置挂耳50来说，增大了预留的膨胀空间，避免了所述挂耳50与所述第一光学元件10中的相关膜片间的干涉所致的膜片褶皱不良，提高了显示品质。
在本公开实施例中，步骤S101：在固定框架的每条边框面向第一光学元 件的一侧均设置多个彼此独立的胶带，包括：
将至少一个所述胶带设置在任一边框的两端点的第一凹槽区域401和第二凹槽区域402之间的间距内，其中，所述胶带设置在所述固定框架面向所述第一光学元件的一侧。
在本公开实施例中，步骤S101：在固定框架的每条边框面向第一光学元件10的一侧均设置多个彼此独立的胶带，包括：
将所述胶带的至少部分与所述第一凹槽区域贴附，以及将所述胶带的至少部分与所述第二凹槽区域贴附。
在具体实施过程中，关于所述胶带30的具体设置可以参照前述实施例中的方式，在此不再详述了。
在本公开实施例中，在步骤S202：将所述挂耳固定在所述第一边框和所述第二边框上的所述凹槽区域40之后，所述方法还包括：
在所述第三边框203和所述第四边框204中未设置所述挂耳的所述凹槽区域40内填充硅胶60，其中，所述硅胶60的厚度等于所述凹槽区域的深度。
在具体实施过程中，在将所述挂耳50固定在所述第一边框201和所述第二边框202上的所述凹槽区域40之后，可以直接将硅胶60填充至所述第三边框203和所述第四边框204中未设置所述挂耳50的所述凹槽区域40内，其中，所述硅胶60的厚度等于所述凹槽区域40的深度，如此一来，在后续在所述固定框架20上贴附所述胶带30之后，对所述扩散板101与所述固定框架20之间的定位，可以避免因所述胶带30与所述凹槽区域40之间的悬空所致的胶带30断裂，保证了所述扩散板101与所述固定框架20之间的稳固性，进而保证了所述背光模组的使用性能。
此外，在具体实施过程中，关于所述凹槽区域40的具体开设情况以及所述胶带30的具体设置情况，可以参见前述实施例中的方法来设置，在此不再详述了。
本公开实施例提供了一种背光模组、其制作方法及显示装置，其中，所述背光模组包括第一光学元件10，围绕所述第一光学元件10设置一周的固定 框架20，所述固定框架20包括相对设置的第一边框201和第二边框202，以及相对设置的第三边框203和第四边框204，所述固定框架20的每条边框面向所述第一光学元件10的一侧均设置有多个彼此独立且沿着边的延伸方向延伸的胶带30，所述第一光学元件10通过所述胶带30与所述固定框架20固定在一起，由于所述固定框架20的每条边框面向所述第一光学元件10的一侧设置有多个彼此独立且沿着边的延伸方向延伸的胶带30，这样的话，通过彼此独立的胶带30不仅可以将所述第一光学元件10与所述固定框架20固定在一起，保证了所述背光模组的稳固性，此外，由于所述胶带30间的彼此独立，所述胶带30与所述固定框架20间的粘合力变小，而且所述胶带对应光学元件膨胀和收缩而产生可回复变形的性质提升，在所述第一光学元件10发生膨胀时，借助所述胶带30发生可回复变形的阻力相对较小可避免第一光学元件10中相应膜片的褶皱不良，进而提高了显示品质。
尽管已描述了本公开的优选实施例，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公开范围的所有变更和修改。
显然，本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样，倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内，则本公开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：
    第一光学元件；
    围绕所述第一光学元件设置一周的固定框架，其中，所述固定框架包括相对设置的第一边框和第二边框，以及相对设置的第三边框和第四边框，所述固定框架的每条边框面向所述第一光学元件的一侧均设置有多个彼此独立且沿着边的延伸方向延伸的胶带，所述第一光学元件通过所述胶带与所述固定框架固定在一起。
  2. 如权利要求1所述的背光模组，其中，所述背光模组包括依次背离所述第一光学元件的第二光学元件和第三光学元件，其中，所述第二光学元件和所述第三光学元件上均开设有多个挂耳孔，通过设置在所述固定框架上的多个挂耳贯穿相应的所述挂耳孔，将所述第二光学元件和所述第三光学元件与所述固定框架固定在一起。
  3. 如权利要求2所述的背光模组，其中，所述第一边框的延伸长度和所述第二边框的延伸长度均为第一延伸长度，所述第三边框的延伸长度和所述第四边框的延伸长度均为第二延伸长度，所述第一延伸长度大于所述第二延伸长度，各个边框上预留有用于固定所述挂耳的凹槽区域，所述第一边框和所述第二边框上的所述凹槽区域均设置有所述挂耳，所述第三边框和所述第四边框中的至少一边框上的所述凹槽区域未设置所述挂耳。
  4. 如权利要求3所述的背光模组，其中，任一边框对应的所述挂耳孔沿该边框长度方向的尺寸，沿背离所述固定框架的中心位置的方向逐渐增大。
  5. 如权利要求3所述的背光模组，其中，任一所述凹槽区域沿所在边框的延伸长度为一预设长度，在任一边框上任两个相邻所述凹槽区域间的间距范围为(100mm，300mm)。
  6. 如权利要求3所述的背光模组，其中，在所述第一边框上，任两个相邻所述凹槽区域之间的间距均为第一预设距离，在所述第二边框上，任两个 相邻所述凹槽区域之间的间距均为与所述第一预设距离不同的第二预设距离。
  7. 如权利要求3所述的背光模组，其中，在所述第一边框上，背离所述固定框架的中心位置的两个相邻所述凹槽区域之间的间距，大于靠近所述固定框架的中心位置的两个相邻所述凹槽区域之间的间距，在所述第二边框上，任两个相邻所述凹槽区域之间的间距为同一预设距离。
  8. 如权利要求3所述的背光模组，其中，在任一边框上，至少包括分别设置在该边两端点的第一凹槽区域和第二凹槽区域，至少一个所述胶带设置在所述第一凹槽区域和所述第二凹槽区域之间的间距内。
  9. 如权利要求8所述的背光模组，其中，所述胶带至少部分与所述第一凹槽区域贴附，以及所述胶带至少部分与所述第二凹槽区域贴附。
  10. 如权利要求3所述的背光模组，其中，在任一边框上，任一所述胶带的长度范围为[a，2a+d]，其中，a表示任两个相邻所述凹槽区域之间的间距，d表示所述凹槽区域沿所在边框的延伸长度。
  11. 如权利要求3所述的背光模组，其中，在任一边框上，任两个相邻所述胶带间的间距范围为[a+2d，2a+3d]，其中，a表示任两个相邻所述凹槽区域之间的间距，d表示所述凹槽区域沿所在边框的延伸长度。
  12. 如权利要求3所述的背光模组，其中，在所述固定框架上，所述胶带对应的且未设置所述挂耳的所述凹槽区域内填充有硅胶，其中，所述硅胶的厚度等于所述凹槽区域的深度。
  13. 一种显示装置，其中，包括：如权利要求1至12任一项所述的背光模组。
  14. 一种背光模组的制作方法，其中，包括：
    在固定框架的每条边框面向第一光学元件的一侧均设置多个彼此独立的胶带，其中，所述固定框架围绕所述第一光学元件设置一周，所述固定框架包括相对设置的第一边框和第二边框，以及相对设置的第三边框和第四边框；
    通过所述胶带将所述第一光学元件与所述固定框架固定在一起。
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