WO2023185313A1 - 支撑架、子背光模组、显示装置和拼接显示模组 - Google Patents

支撑架、子背光模组、显示装置和拼接显示模组 Download PDF

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Publication number
WO2023185313A1
WO2023185313A1 PCT/CN2023/077077 CN2023077077W WO2023185313A1 WO 2023185313 A1 WO2023185313 A1 WO 2023185313A1 CN 2023077077 W CN2023077077 W CN 2023077077W WO 2023185313 A1 WO2023185313 A1 WO 2023185313A1
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WO
WIPO (PCT)
Prior art keywords
support
support frame
base
backlight module
sub
Prior art date
Application number
PCT/CN2023/077077
Other languages
English (en)
French (fr)
Inventor
秦雪飞
张宇
李卓隆
耿仕新
王伯长
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Publication of WO2023185313A1 publication Critical patent/WO2023185313A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the present invention relates to the field of display technology, and in particular to a support frame, a sub-backlight module, a display device and a splicing display module.
  • Direct backlight technology places the backlight module directly under the LCD panel. Direct backlight can make the backlight brightness of the LCD TV more uniform and the picture more delicate and lifelike.
  • the diffuser plate In the existing direct-type backlight module, the diffuser plate is supported by a middle frame and placed above the backplane.
  • the diffuser plate is thin and there is a large space between the diffuser plate and the backplane.
  • a support frame is often set in the middle of the diffusion plate to prevent the diffusion plate from deforming.
  • collisions between the diffuser plate and the support frame will inevitably occur, which may even cause the diffuser plate to break.
  • the present invention aims to solve at least one of the technical problems existing in the prior art, and proposes a support frame, a sub-backlight module, a display device and a splicing display module.
  • an embodiment of the present disclosure provides a support frame for supporting a diffuser plate, including: a support column and a mounting part arranged along a first direction, the mounting part including: oppositely arranged in the first direction
  • the elastic connection part and the base are connected to the base, the support column extends along the first direction, and one end of the support column close to the installation part is fixed to the elastic connection part, so
  • the elastic connection part is configured to be elastically deformed in the first direction, so that the distance between an end of the support column close to the mounting part and the base in the first direction changes.
  • the elastic connection part includes: two elastic parts arranged along the second direction and a connection part, the connection part is located between the two elastic parts, one end of the elastic part is connected to the The base is connected, and the other end of the elastic part is connected to the connecting part, One end of the support column close to the installation part is fixed to the connecting part;
  • the elastic part is configured to be elastically deformed in the first direction to change the distance between the connecting part and the base in the first direction, where the first direction intersects the second direction.
  • the elastic portion protrudes toward a side away from the base, and the connecting portion is arranged parallel to the base.
  • the elastic part includes: a first part, a second part and a third part connected in sequence, the first part is connected to the base, and the third part is connected to the connecting part;
  • the vertical distance between the second part and the base in the first direction is along the gradually increases in the second direction
  • the vertical distance between the third part and the base in the first direction is along The second direction gradually decreases.
  • the cross-sectional area of the support column perpendicular to the first direction first remains constant and then gradually decreases.
  • the cross-sectional shape of the support column perpendicular to the first direction is a rectangle or a trapezoid
  • the cross-sectional area of the support column perpendicular to the first direction gradually decreases.
  • the cross-sectional shape of the support column perpendicular to the first direction is circular
  • the end of the support column close to the mounting part has a cross-sectional shape radius of a cross-section perpendicular to the first direction of 4 mm to 5 mm;
  • the end of the support column away from the mounting part has a cross-sectional shape radius of a cross-section perpendicular to the first direction of 0.5 mm to 1.5 mm;
  • the length of the support column in the first direction is 20 mm to 30 mm.
  • a first screw hole is provided on the base.
  • a portion of the base surrounding the first screw hole protrudes outward toward a side away from the support column.
  • the elastic connection part, the base and the support column are integrally formed structures.
  • an embodiment of the present disclosure also provides a sub-backlight module, including: the support frame provided in the above-mentioned first aspect.
  • it further includes: a back panel, the back panel includes a bottom panel and a side panel, the side panel is located on the first side of the bottom panel and connected to the edge portion of the bottom panel;
  • the support frame is located on the first side of the base plate, and the mounting portion of the support frame is fixed to the base plate.
  • it further includes: a plurality of light bars arranged along a third direction, the light bar including a plurality of lamp beads arranged along a fourth direction;
  • the ratio of the number of lamp beads to the number of supporting frames is 6:1 to 10:1.
  • the center of the orthographic projection of the support column on the bottom plate is surrounded by the center of the orthographic projection of the four lamp beads closest to the support frame on the bottom plate.
  • the centers of the quadrilaterals overlap.
  • a plurality of support frames arranged along the fourth direction are provided on the central axis of the bottom plate;
  • the central axis of the base plate is an imaginary line passing through the center of the surface of the first side of the base plate and extending along the fourth direction.
  • the surface of the first side of the base plate includes a first peripheral placement area, a central placement area and a second peripheral placement area sequentially arranged along the third direction;
  • the first peripheral placement area and the second peripheral placement area are each provided with at least two support frame groups.
  • the at least two support frame groups include: a first support frame group and a support frame located far away from the first support frame group.
  • a second support frame group in the central placement area, and at least two light bars are provided between the first support frame group and the second support frame group;
  • the first support frame group and the second support frame group both include at least two support frames arranged along the fourth direction, and the number of the support frames in the first support frame group is greater than that of the third support frame group.
  • the number of supporting frames in the second supporting frame group is greater than that of the third support frame group.
  • a reflector is provided on the side of the light bar facing away from the base plate. Paper;
  • a plurality of first openings corresponding to the lamp beads are provided on the reflective paper, and the lamp beads are exposed from the corresponding first openings;
  • a plurality of second openings corresponding to the support frame are provided on the reflective paper, and a plurality of second screw holes are provided on the bottom plate;
  • the support frame is fixed to the base plate by screws passing through the corresponding second openings, the first screw holes, and the corresponding second screw holes on the base plate.
  • all the light bars are divided into multiple light bar groups, each light bar group includes at least one light bar, each light bar group is configured with a corresponding adapter board, and the light bar passes through the first
  • the flexible flat cable is electrically connected to the corresponding adapter board;
  • the adapter board is fixed on the first side of the base plate, and the adapter board is electrically connected to the power control module located on the second side of the base plate through a second flexible flat cable that runs through the base plate;
  • a receiving groove is formed on the bottom plate corresponding to the area where the adapter plate is located, and the adapter plate is located in the corresponding receiving groove.
  • it also includes: a middle frame and a diffusion plate, the middle frame being assembled and fixed with the back panel;
  • the middle frame includes: a first support structure and a second support structure.
  • the side of the first support structure away from the bottom plate is a first support surface.
  • the second support structure is located away from the first support surface. one side of the bottom plate;
  • the diffusion plate is located on the side of the first support surface away from the bottom plate and inside the second support structure, and a gap space is formed between the diffusion plate and the inner side wall of the second support structure, The orthographic projection of the diffusion plate on the first support surface overlaps with the first support surface;
  • a light guide strip is provided between the first supporting surface and the diffusion plate;
  • the first side of the light guide strip close to the second support structure is in contact with the inner wall of the second support structure
  • the second side of the light guide strip away from the second support structure extends beyond the inner edge of the first support surface.
  • prisms are formed on the inner side wall of the second support structure Film, the prismatic film is configured to reflect the light rays directed toward the inner wall of the second support structure in the gap space toward the light guide strip.
  • the prism film is a Fresnel prism film.
  • the middle frame includes four support frame bars connected end to end, each support frame bar includes the first support structure and the second support structure, and the second support structure is away from the One side of the bottom plate is the second supporting surface;
  • the four support frame bars include one first support frame bar and three second support frame bars;
  • the ratio of the width of the second supporting surface on the first supporting frame bar to the width of the second supporting surface on the second supporting frame bar is 8:1 ⁇ 20:1.
  • an embodiment of the present disclosure further provides a display device, including: the sub-backlight module as provided in the second aspect.
  • the display device further includes: a display panel, the display panel is fixed to the second supporting surface;
  • the display panel includes an effective display area and a peripheral area surrounding the effective display area.
  • the peripheral area includes: one on-chip film side area and three non-on-chip film side areas;
  • the chip-on-chip film side area is arranged opposite to the second support surface on the first support frame bar, and the three non-chip-on-chip film side areas are respectively connected with all the three second support frame bar areas.
  • the second supporting surfaces are arranged oppositely.
  • the chip-on-chip film side area is fixed to the second support surface on the first support frame through double-sided tape;
  • the non-on-chip film side area is fixed to the corresponding second supporting surface on the second supporting frame bar through UV curing glue.
  • embodiments of the present disclosure also provide a splicing display module, including: 2N display devices, the 2N display devices are arranged in an array of 2 rows and N columns, where N is a positive integer;
  • the flip-chip film side areas of the N display devices located in the first row are all located on the side away from the display devices in the second row;
  • the flip-chip film side areas of the N display devices located in the second row are located far away from The first row is the side of the display device.
  • Figure 1a is a schematic structural diagram of a support frame provided by an embodiment of the present disclosure
  • Figure 1b is a schematic cross-sectional view of the support frame shown in Figure 1a;
  • Figure 2a is another structural schematic diagram of a support frame provided by an embodiment of the present disclosure.
  • Figure 2b is another schematic cross-sectional view of the support frame shown in Figure 2a;
  • Figure 3 is a schematic structural diagram of a neutron backlight module according to an embodiment of the present disclosure
  • Figure 4 is a schematic cross-sectional view along the A-A’ direction in Figure 3;
  • Figure 5 is a schematic top view of the backplane in an embodiment of the present disclosure.
  • Figure 6 is a structural schematic diagram of the lamp beads and support frame in part of the back panel
  • Figure 7 is a schematic structural diagram of an adapter board being provided on the backplane in the implementation of the present disclosure
  • Figure 8 is a schematic cross-sectional view of the edge part of the diffusion plate placed on the first supporting surface in the related art
  • Figure 9 is a schematic cross-sectional view of the edge portion of the diffuser plate placed on the first supporting surface in the embodiment of the present disclosure.
  • Figure 10 is another schematic cross-sectional view when the edge part of the diffuser plate is placed on the first supporting surface in the embodiment of the present disclosure
  • Figure 11 is a structural schematic diagram of the assembly of the middle frame and the back panel in an embodiment of the present disclosure
  • Figure 12A is a schematic top view of the second supporting surfaces of the four supporting frame bars in the middle frame in the embodiment of the present disclosure
  • Figure 12B is a structural schematic diagram of connecting two adjacent support frames in an embodiment of the present disclosure.
  • Figure 13 is a schematic diagram of an exploded structure of a display device in an embodiment of the present disclosure.
  • Figure 14 is a schematic cross-sectional view of a display device in an embodiment of the present disclosure.
  • Figure 15a is a structural schematic diagram of pasting the first protective film on the outer wall of the second support frame
  • Figure 15b is a schematic cross-sectional view of pasting the first protective film on the outer wall of the second support frame
  • Figure 16a is a structural schematic diagram of pasting masking tape on the second support surface of the second support frame
  • Figure 16b is a schematic cross-sectional view of pasting masking tape on the second support surface of the second support frame
  • Figure 17a is a structural schematic diagram of pasting a first protective film on the inner edge of the second support surface of the second support frame;
  • Figure 17b is a schematic cross-sectional view of pasting a second protective film on the inner edge of the second support surface of the second support frame;
  • Figure 18a is a structural schematic diagram of coating ultraviolet curable glue on the second support surface of the second support frame
  • Figure 18b is a schematic cross-sectional view of coating UV curable glue on the second support surface of the second support frame
  • Figure 19 is a schematic structural diagram after removing the masking tape
  • Figure 20 is a structural schematic diagram of placing a support block in the area where the masking tape has been removed;
  • Figure 21 is a schematic structural diagram of a splicing display module in an embodiment of the present disclosure.
  • Figure 1 is a schematic structural view of a support frame provided by an embodiment of the present disclosure.
  • Figure 2 is a schematic cross-sectional view of the support frame shown in Figure 1.
  • the frame includes: a support column 1 and a mounting part 2 arranged along the first direction Y.
  • the mounting part 2 includes: an elastic connecting part 3 and a base 4 arranged oppositely in the first direction Y.
  • the elastic connecting part 3 is connected to the base 4 to support
  • the column 1 extends along the first direction Y.
  • One end of the support column 1 close to the installation part 2 is fixed to the elastic connection part 3.
  • the elastic connection part 3 is configured to be elastically deformed in the first direction Y, so that the support column 1 is close to the installation part. The distance between one end of 2 and the base 4 in the first direction Y changes.
  • the elastic connection part 3 is provided between the base 4 and the support column 1, when the diffuser plate collides with the end of the support column 1 away from the mounting part 2, the elastic connection part 3 is provided between the base 4 and the support column 1.
  • the connecting portion 3 can elastically deform due to force to play a buffering role, thereby effectively reducing the risk of the diffuser plate breaking.
  • the elastic connection part 3 includes: two elastic parts 3a arranged along the second direction The other end of the part 3a is connected to the connecting part, and one end of the support column 1 close to the mounting part 2 is fixed to the connecting part; the elastic part 3a is configured to be able to elastically deform in the first direction Y to change the position between the connecting part and the base 4 in the first direction. The distance in direction Y where the first direction Y intersects the second direction X.
  • the support column 1 can be stably supported, and on the other hand, the support column 1 can quickly produce corresponding elastic deformation when it is affected by external force.
  • the elastic portion 3a protrudes outward toward the side away from the back plate, and the connecting portion is arranged parallel to the base 4 .
  • the elastic part 3a is strip-shaped.
  • the elastic part 3a includes: a first part 301, a second part 302 and a third part 303 connected in sequence.
  • the first part 301 is connected to the base 4, and the third part 303 is connected to the base 4.
  • the connecting parts 3b are connected; from the connection between the second part 302 and the first part 301 to the connection between the second part 302 and the third part 303, the vertical distance between the second part 302 and the base in the first direction Y is along the second The direction X gradually decreases.
  • the elastic connection part 3 includes two elastic parts 3a and one connection part 3b is only an optional implementation in the embodiment of the present disclosure, which does not limit the technical solution of the present disclosure.
  • the elastic connection part 3 can also adopt other structures capable of elastic deformation under the action of external force, and the description thereof will not be repeated here.
  • the distance between the connecting portion 3b and the base 4 in the first direction Y is h, 0.45mm ⁇ h ⁇ 0.55mm.
  • the cross-sectional area of the support column 1 perpendicular to the first direction Y remains unchanged at first, and then slowing shrieking.
  • the cross-sectional shape of the support column perpendicular to the first direction is rectangular or trapezoidal.
  • the support column 1 moves away from the mounting portion 2 along the first direction Y, the cross-sectional area of the support column 1 perpendicular to the first direction Y gradually decreases.
  • the support column 1 can be made to have a shape that is wide at the bottom and narrow at the top.
  • it can make the overall importance of the support column 1 smaller, and on the other hand, it can also make the bottom end of the support column 1 (close to the mounting part 2 One end) can have a large connection area with the mounting part 2 to ensure a firm connection between the two.
  • the top of the support column 1 (the end away from the mounting part 2) will not be too large, so that the gap between the support column 1 and the diffusion plate
  • the contact panel is relatively small, which is beneficial to increasing the amount of light entering the diffuser plate.
  • the top area of the support column 1 is, the greater the pressure on the diffuser plate when a collision occurs between the support column 1 and the diffuser plate, and the higher the risk of the diffuser plate breaking. Therefore, when dealing with the support column 1 When designing the top area, the top area of the support column 1 cannot be designed to be too small.
  • the cross-sectional shape of the support column 1 perpendicular to the first direction Y is circular; the end of the support column 1 close to the mounting portion 2 has a cross-sectional shape radius of 4 mm to a cross-section perpendicular to the first direction Y. 5mm; the cross-sectional shape radius of the end of the support column 1 away from the mounting part 2 perpendicular to the first direction Y is 0.5mm ⁇ 1.5mm; the length of the support column 1 in the first direction Y is 20mm ⁇ 30mm.
  • the base 4 is provided with a first screw hole 5 .
  • a second screw hole is provided on the back panel corresponding to the area where the support frame can be placed. When assembling the support frame with the back panel, only screws need to be passed through the first screw hole 5 on the support frame and the corresponding position on the back panel. The second screw hole allows the support bracket to be fixed to the corresponding position on the back panel.
  • the portion 6 surrounding the first screw hole 5 on the base 4 protrudes outward toward a side away from the support column 1 .
  • the portion surrounding each second screw hole on the bottom plate will protrude toward the side facing away from the supporting surface to form a positioning groove.
  • the portion surrounding the first screw hole 5 on the support frame can be The protruding portion 6 is placed in the positioning groove on the bottom plate. On the one hand, it can realize the alignment of the first screw hole 5 and the second screw hole. On the other hand, it can play a role in limiting the position of the support frame to avoid supporting the support frame. Misalignment occurs between the rack and the back panel.
  • the material of the elastic connection part 3, the base 4 and the support column 1 is a transparent resin material, which can effectively prevent the support frame from blocking the light of the backlight after being assembled to the backplane.
  • the elastic connection part 3, the base 4 and the support column 1 are integrally formed structures.
  • the integrally formed elastic connecting portion 3, the base 4 and the supporting column 1 can be formed by injection molding.
  • Figure 3 is a schematic structural diagram of a neutron backlight module according to an embodiment of the present disclosure.
  • Figure 4 is a schematic cross-sectional view along the direction A-A' in Figure 3.
  • Figure 5 is a schematic top view of the backplane in an embodiment of the present disclosure.
  • Figure 6 is a structural schematic diagram of the lamp beads and the support frame in part of the back panel.
  • the sub-backlight module includes a support frame 19.
  • the support frame adopts the support provided in the above embodiment. Frame 19.
  • Frame 19 For the description of the support frame 19, please refer to the content in the previous embodiments and will not be described again here.
  • the sub-backlight module also includes a back panel 12.
  • the back panel 12 includes a bottom panel 12a and a side panel 12b.
  • the side panel 12b is located on the first side of the bottom panel 12a and is connected to the edge of the bottom panel 12a; the support frame 19 is located on the bottom panel.
  • the mounting portion of the support frame 19 is fixed to the bottom plate 12a.
  • the sub-backlight module also includes a plurality of light bars 15 arranged along the third direction W.
  • the light bar 15 includes a plurality of lamp beads 16 arranged along the fourth direction Z; wherein, the light bars 15 can be pasted by double-sided tape. fixed on the back plate 12.
  • the ratio of the number of lamp beads 16 to the number of supporting frames 19 is 6:1 ⁇ 10:1.
  • the number and arrangement of the lamp beads 16 can be set according to the display brightness requirements of the display device, and the number and arrangement of the support brackets 19 can be set according to the support requirements of the diffusion plate 13 .
  • the number of lamp beads 16 is constant, the greater the number of supporting frames 19 , the better the supporting effect on the diffusion plate 13 , but the greater the impact on the light emission of the light bar 15 .
  • the ratio of the number of lamp beads 16 to the number of support frames 19 can be set in the range of 6:1 to 10:1. For example 8:1.
  • the center of the orthographic projection of the support column 1 of the support frame 19 on the bottom plate 12a, and the orthographic projection of the four lamp beads 16 closest to the support frame 19 on the bottom plate 12a overlap.
  • a plurality of support frames 19 arranged along the fourth direction Z are provided on the central axis L of the bottom plate 12 a; the central axis L of the bottom plate 12 a passes through the first side of the bottom plate 12 a an imaginary line that is the center of the surface and extends along the fourth direction Z.
  • a row of support brackets 19 is provided on the central axis L of the bottom plate 12a in the embodiment of the present disclosure.
  • the surface of the first side of the bottom plate 12a includes a first peripheral placement area 12a1, a central placement area 12a2 and a second peripheral placement area 12a3 that are sequentially arranged along the third direction W; the first peripheral placement area 12a1 and The second peripheral placement areas 12a3 are each provided with at least two support frame groups.
  • the at least two support frame groups include: a first support frame group 19a and a second support frame group 19b located away from the first support frame group 19a and away from the central placement area 12a2.
  • at least two light bars 15 are provided between the first support frame group 19a and the second support frame group 19b; the first support frame group 19a and the second support frame group 19b both include at least two light bars arranged along the fourth direction Z.
  • the number of supporting frames 19 in the first supporting frame group 19a is greater than the number of supporting frames 19 in the second supporting frame group 19b.
  • the drawings only illustrate that two light bars 15 are provided between the first support frame group 19a and the second support frame group 19b.
  • the first support frame group 19a includes four support frames 19 and the second support frame group 19.
  • 19b includes the case of two support brackets 19, which serves only as an example and does not limit the technical solution of the present disclosure.
  • the support frames 19 in the central placement area 12a2 are arranged in an array along the third direction and the fourth direction.
  • each light bar 15 includes 10 lamp beads 16.
  • the third direction W is the row direction
  • the fourth direction Z is the column direction
  • all the lamp beads 16 are arranged in a 10-axis direction. Array arrangement of rows and 20 columns.
  • the number of supporting brackets 19 is 24, and the specific distribution is as follows: between the second row of lamp beads 16 and the third row of lamp beads 16, between the fourth row of lamp beads 16 and the fifth row of lamp beads 16, between the sixth row of lamp beads 16 and 16. Between the seventh row of lamp beads 16 and between the eighth row of lamp beads 16 and the ninth row of lamp beads 16, five support brackets 19 are provided, and the five support brackets 19 are respectively located at the fourth row of lamp beads 16 and the fifth row of lamp beads.
  • lamp beads 16 and support frames 19 shown in FIG. 5 is only an optional implementation in the embodiment of the present disclosure, and it will not limit the technical solution of the present disclosure.
  • a reflective paper 30 is provided on the side of the light bar 15 facing away from the bottom plate 12a; a plurality of first openings corresponding to the lamp beads 16 are provided on the reflective paper 30, and the lamp beads 16 are opened from the corresponding first openings. Exposed in an opening.
  • first screw hole is provided on the base of the support frame 19
  • a plurality of second openings corresponding to the support frame 19 can be provided on the reflective paper 30, and a plurality of third openings are provided on the bottom plate 12a.
  • the two screw holes are screwed through the corresponding second opening, the first screw hole on the support frame 19, and the corresponding second screw hole on the bottom plate 12a to fix the support frame 19 and the bottom plate 12a.
  • FIG 7 is a schematic structural diagram of an adapter board being provided on the backplane in the implementation of the present disclosure.
  • all light bars 15 are divided into multiple light bar groups 15, each Each group of 15 light bars includes at least one light bar 15.
  • Each group of 15 light bars is configured with a corresponding adapter board 20.
  • the light bar 15 is electrically connected to the corresponding adapter board 20 through a first flexible flat cable 21.
  • the adapter The board 20 is fixed on the first side of the base plate 12a, and the adapter board 20 is electrically connected to the power control module 80 (see later shown in Figure 13) located on the second side of the base plate 12a through the second flexible flat cable 22 that runs through the base plate 12a. connect.
  • the power control module can provide electrical signals to the light bar 15 through the second flexible flat cable 22 , the adapter board 20 , and the first flexible flat cable 21 .
  • the power control module has a local dimming function, which is beneficial to improving the contrast of the display screen.
  • a receiving groove 31 is formed on the base plate 12 a in an area corresponding to the adapter plate 20 , and the adapter plate 20 is located in the corresponding receiving groove 31 .
  • the portion of the bottom plate 12a used to place the adapter plate 20 protrudes toward the side facing away from the support surface to form a receiving groove 31, and the adapter plate 20 is placed in the receiving groove 31 so that the adapter plate 20 is lowered Shen, with This prevents the adapter board 20 from partially lifting the light bar 15 .
  • each adapter board 20 can be connected to five light bars 15 .
  • the sub-backlight module also includes a middle frame 11 and a diffusion plate 13.
  • the middle frame 11 is assembled and fixed with the back plate 12;
  • the middle frame 11 includes: a first support structure 11a and a second support. Structure 11b, the side of the first support structure 11a away from the bottom plate 12a is the first support surface, the second support structure 11b is located on the side of the first support surface away from the bottom plate 12a;
  • the diffusion plate 13 is located on the side of the first support surface away from the bottom plate 12a. side and located inside the second support structure 11b.
  • a gap space is formed between the diffusion plate 13 and the inner side wall of the second support structure 11b (an expansion space reserved to facilitate the installation of the diffusion plate 13).
  • the diffusion plate 13 is on the first The orthographic projection on the support surface overlaps with the first support surface.
  • the first supporting surface can be used to support the edge portion of the diffusion plate 13
  • the support frame 19 can be used to support the middle portion of the diffusion plate 13 .
  • a light guide strip 14 is provided between the first supporting surface and the diffusion plate 13 .
  • FIG. 8 is a schematic cross-sectional view when the edge part of the diffusion plate is placed on the first support surface in the related art.
  • the edge part of the diffusion plate 13 directly overlaps the first support surface. Due to the narrow frame design of the display product, after the display panel and the sub-backlight module are assembled, the orthographic projection of the part of the diffusion plate 13 overlapping the first supporting surface on the display panel will cover the effective display of the display panel.
  • Area Active Area, referred to as AA area
  • the light emitting brightness of the part of the diffusion plate 13 overlapping the first supporting surface called the "low-brightness light emitting part"
  • the area directly facing the display i.e., the edge of the AA area
  • Figure 9 is a schematic cross-sectional view when the edge part of the diffuser plate is placed on the first support surface in the embodiment of the present disclosure.
  • a first support surface is provided with The light guide strip 14 and the diffusion plate 13 overlap the light guide strip 14 .
  • the light emitted by the lamp bead 16 irradiates the light guide bar 14
  • the light can be transmitted to the edge portion of the diffusion plate 13 through the light guide bar 14, so that the light output brightness of the edge portion of the diffusion plate 13 is increased, thereby making the display panel
  • the edge of the AA area receives more light,
  • the display brightness at the edge of the AA area of the display panel is increased, which can effectively improve or even completely solve the "dark edge" problem.
  • the first side of the light guide strip 14 close to the second support structure 11b is in contact with the inner wall of the second support structure 11b; the second side of the light guide strip 14 away from the second support structure 11b exceeds the second support structure 11b.
  • the inside edge of a supporting surface The further the distance between the second side of the light guide strip 14 away from the second support structure 11 b and the inner edge of the first support surface and the thicker the thickness of the light guide strip 14 , the more light will enter the light guide strip 14 , the more conducive to improving the light emission brightness of the edge portion of the diffusion plate 13 .
  • the center of gravity of the light guide plate will shift in a direction away from the inner wall of the second support structure 11b , when the center of gravity of the light guide plate shifts beyond the inner edge of the first supporting surface, the light guide plate will easily tilt, which is not conducive to the assembly of the light guide plate; in addition, as the thickness of the light guide strip 14 increases, the diffusion plate 13 will In addition, the assembly space of the optical film 18 is reduced, which is not conducive to the assembly of the diffusion plate 13 and the optical film 18 .
  • the thickness of the light guide strip 14 in the first direction is set to 1.2 mm ⁇ 1.6mm, for example 1.4mm; the second side of the light guide strip 14 away from the second support structure 11b exceeds the inner edge of the first support surface by 1mm to 2mm, for example 1.5mm.
  • a gap space 35 is formed between the diffusion plate 13 and the inner wall of the second support structure 11b, some light from the light guide strip 14 will be incident into the gap space 35, and a small part of the light will be emitted at a small angle (the light and the light guide plate The direction of the angle formed by the normal line of the surface passes through the gap space 35, and most of the light rays are directed toward the inner wall of the second support structure 11b at a large angle.
  • the inner wall is generally made of metal material, its surface has better specular reflection properties, so that the light irradiating the surface will be specularly reflected, and the reflected light will be directed to the edge of the AA area of the display panel at a large angle. At this time, the edge of the AA area of the display panel will appear dark when viewed from the front and bright when viewed from the side.
  • Figure 10 is another schematic cross-sectional view when the edge part of the diffusion plate is placed on the first supporting surface in the embodiment of the present disclosure.
  • Figure 10 in order to improve the edge part of the AA area of the display panel, it will appear dark in front view and side view.
  • the technical solution of the present disclosure is based on the second support
  • a prism film 32 is formed on the inner wall of the structure 11 b.
  • the prism film 32 is configured to reflect the light rays emitted from the gap space 35 toward the inner wall of the second support structure 11 b toward the light guide strip 14 .
  • the light that hits the inner wall of the second support structure 11 b at a large angle will be reflected by the prism film 32 to the light guide strip 14 , and part of the light that reaches the light guide strip 14 will be refracted into the light guide strip 14 and be guided through the light guide strip 14 .
  • the light strip 14 conducts light again and finally passes through the gap space 35 in a small angle direction.
  • the area of the prism film 32 will be designed to be slightly smaller than the area of the portion of the inner wall of the second support structure 11b that is not in contact with the light guide strip.
  • the prism film 32 can just cover the portion of the inner wall of the second support structure 11b that is not in contact with the light guide strip (the area of the prism film 32 is designed to be equal to the second support structure 11b The area of the inner side wall that is not in contact with the light guide strip).
  • the size and reflection angle of each prism on the prism film can be pre-simulated and designed according to actual dimming needs to meet actual use needs.
  • the prism film is a Fresnel prism film.
  • Figure 11 is a schematic structural diagram of the assembly of the middle frame and the back panel in an embodiment of the present disclosure.
  • the middle frame 11 also includes an assembly portion 11c fixed to the back panel 12.
  • Assembling The portion 11c is located on the side of the second support structure 11b away from the second support structure 11b, wherein a sinking groove 11d is formed on the assembly portion 11c, and the opening of the sinking groove 11d faces away from the first support structure 11a.
  • the side plate 12b on the back plate 12 is connected to the first support plate 1201 connected to the bottom plate 12a, the first support plate 1202 connected to the first support plate 1201, and the third support plate 1203 connected to the first support plate 1202, wherein the first The support plate 1201, the first support plate 1202 and the third support plate 1203 are formed by secondary bending based on the same plate. Screw holes are formed on the outer wall of the sinking groove 11d and the third support plate 1203. By placing the third support plate 1203 in the sinking groove 11d and using screws 17 to pass through the screw holes on the outer wall and the third support plate 1203, To achieve the fixation of the back panel 12 and the middle frame 11 .
  • the end of the third support plate 1203 is in contact with the bottom plate 12a of the sink 11d, and the assembly
  • the side wall of the portion 11c that surrounds the sinking groove 11d and is formed with a screw hole is in contact with the first support plate 1202, so that the plate and the middle frame 11 can be stably assembled.
  • Figure 12A is a schematic top view of the second supporting surface of the four support frame bars in the middle frame in the embodiment of the present disclosure.
  • Figure 12B is a structural schematic diagram of the connection of two adjacent support frame bars in the embodiment of the present disclosure.
  • the middle frame 11 includes four support frame bars 40 connected end to end.
  • Each support frame bar 40 includes a first support structure 11a and a second support structure 11b. , wherein the two ends of two adjacent support frame bars 40 can be fixed through corner blocks.
  • the corner block has a first connecting bar and a second connecting bar that are perpendicular to each other.
  • the first connecting bar and the second connecting bar are both provided with screw holes, and the assembling portion 11c is used to form a side wall of the sinking groove. Screw holes are also formed at the ends of the support frames.
  • the first and second connecting strips of the corner block 43 can be placed in the sinking grooves 11d of the two support frames to be connected, and screws 44 can be used to penetrate them.
  • the screw holes located at the ends of the support frame bars and the screw holes on the first connecting bar/second connecting bar enable the two support frame bars 40 to be connected to be connected to the same corner block.
  • the first connecting bar and the second connecting bar are both provided with positioning convex bulges 45, and positioning openings are formed at the ends of the support frame bar 40.
  • the convex bump 45 is placed in the positioning opening to position the support frame bar 40 and the first connecting bar or the second connecting bar, so as to facilitate the subsequent use of screws 44 to align the support frame bar and the first connecting bar or the second connecting bar. To fix.
  • the side of the second support structure 11b away from the bottom plate 12a is the second support surface;
  • the four support frame bars include one first support frame bar 41 and three second support frame bars 42; the first support frame
  • the ratio of the width of the second supporting surface on the bar 41 to the width of the second supporting surface on the second supporting frame bar 42 is 8:1 ⁇ 20:1, for example, 40:3.
  • the width of the second supporting surface on the first supporting frame bar 41 is 10 mm to 14 mm, such as 12 mm; the width of the second supporting surface on the second supporting frame bar 42 is 0.8 mm to 1.2 mm, such as 0.9mm.
  • the width of the second supporting surface on each supporting frame bar can be designed and adjusted according to actual needs.
  • FIG. 13 is a schematic diagram of an exploded structure of a display device in an embodiment of the present disclosure.
  • Figure 14 is a schematic cross-sectional view of a display device in an embodiment of the present disclosure.
  • the display panel includes a sub-backlight module,
  • the sub-backlight module can be the sub-backlight module provided in the above embodiment.
  • the sub-backlight module please refer to the content in the previous embodiment and will not be described again here.
  • the display device when the middle frame 11 includes four support frame bars and the four support frame bars include one first support frame bar 41 and three second support frame bars 42 , the display device further includes: a display panel 51 , The panel 51 is fixed to the second supporting surface of each support frame 40; the display panel includes an effective display area and a peripheral area surrounding the effective display area.
  • the peripheral area includes: one flip-chip film side area and three non-chip-film side areas; The chip-on-chip film side area is arranged opposite to the second supporting surface on the first supporting frame bar 41 , and the three non-on-chip film side areas are arranged opposite to the second supporting surfaces on the three second supporting frame bars 42 respectively.
  • the flip-chip film side area is used to realize the chip-on-film (COF) process; among them, the COF process means: placing the display driver IC chip into the flexible FPC cable, and then using the characteristics of the FPC itself Fold to the bottom of the screen. Specifically, through thermal compression, the Gold Bump of the IC chip and the Inner Lead on the flexible substrate circuit will be bonded. Since the space occupied by the IC chip is released, the frame width can be effectively reduced.
  • COF chip-on-film
  • the chip-on-chip film side area is fixed to the second supporting surface on the first support frame bar 41 through double-sided tape 50a; the non-chip-on-chip film side area is fixed to the corresponding second support frame bar through UV curing glue 50b.
  • the second supporting surface on 42 is fixed.
  • Figure 15a is a structural schematic diagram of pasting the first protective film on the outer wall of the second support frame bar.
  • Figure 15b is a cross-sectional schematic view of pasting the first protective film on the outer wall of the second support frame bar.
  • Figure 16a Figure 16b is a schematic cross-sectional view of pasting masking tape on the second support surface of the second support frame
  • Figure 16b is a schematic cross-sectional view of pasting masking tape on the second support surface of the second support frame
  • Figure 17a It is a structural schematic diagram of pasting the first protective film on the inner edge of the second support surface of the second support frame bar.
  • Figure 17b is a structural diagram of pasting the second protective film on the inner edge of the second support surface of the second support frame bar.
  • Figure 18a is a structural schematic diagram of coating ultraviolet curing glue on the second supporting surface of the second supporting frame bar.
  • Figure 18b is a schematic diagram of coating ultraviolet curing glue on the second supporting surface of the second supporting frame bar. of A schematic cross-sectional view.
  • Figure 19 is a schematic structural view after removing the masking tape.
  • Figure 20 is a schematic structural view of placing a support block in the area where the masking tape has been removed. As shown in Figures 15a to 20, in this paper In the disclosed embodiment, after the sub-backlight module is assembled, the process flow of fixing the display panel 51 and each second supporting surface on the middle frame 11 is as follows:
  • a first protective film 61 is pasted on the outer wall of each second support frame bar of the middle frame 11.
  • the function of the first protective film 61 is to ensure that subsequent coating on the second support surface is If glue overflow occurs during the application of UV curable glue, avoid contact between the overflow glue and the outer wall of the second support frame.
  • masking tape 62 is pasted at intervals on the second support surfaces of each second support frame bar of the middle frame 11, for example, 3 to 5 strips are pasted on each second support surface at intervals.
  • a second protective film 63 is pasted on the inner edge of the second support surface of the second support frame.
  • the second protective film 63 can cover the edge of the optical film 18 .
  • the function of the protective film 63 is to prevent the overflowing glue from contacting the optical film 18 in the sub-backlight module if glue overflow occurs during the subsequent coating of UV curable glue on the second supporting surface.
  • a glue gun is used to continuously apply UV curing glue 64 on the second support surface of the second support frame, where the UV curing glue 64 will cover the masking tape 62 and is located on the second support.
  • the glue width is controlled to be 0.6mm ⁇ 0.8mm width and the height is 0.4mm ⁇ 0.5mm.
  • the masking tape 62 is removed.
  • the UV curing glue 64 covering the masking tape 62 is also removed, so a gap 65 is formed in the area originally covered with the masking tape.
  • the support block 66 is placed in the notch 65 .
  • the support block 66 can be foam with a width of 5 mm and a thickness of 2 mm.
  • a double-sided tape is pasted on the second supporting surface of the first supporting frame (this step can also be performed in advance), and the first protective film 61 and the second protective film 63 are removed.
  • the display panel 51 is placed on the support block 66 and the display panel 51 is aligned with the sub-backlight module. At this time, the display panel 51 is not in contact with the UV curing glue 64 .
  • the UV curing glue 64 on each second support frame bar is cured in sequence and the corresponding support block is removed.
  • the process of UV curing a certain second support frame and removing the corresponding support block is as follows: while curing the UV curing glue 64 on the second support frame, the second support frame is removed one by one.
  • the support block 66 is placed on the second support frame, and the display panel is lightly pressed to bring the display panel into contact with the UV curing glue on the second support frame until the UV curing glue is completely cured.
  • the light-shielding tape 52 can be used to cover the side of the display panel 51 and the peripheral area of the display panel 51 .
  • FIG. 21 is a schematic structural diagram of a splicing display module in an embodiment of the present disclosure. As shown in Figure 21, in some embodiments, the splicing display module displays a device, wherein the display device adopts the display device provided in the previous embodiment. .
  • the peripheral area of the display device 71 includes: one flip-chip film side area 81 and three non-flip-chip film side areas 82; the flip-chip film side area 81 and the second support surface on the first support frame bar The three non-on-chip film side areas 82 are respectively arranged opposite to the second supporting surfaces on the three second supporting frames.
  • the spliced display module specifically includes 2N display devices 71 arranged in an array of 2 rows and N columns, where N is a positive integer; the flip-chip film side area 81 of the N display devices 71 located in the first row They are all located on the side away from the display devices 71 in the second row; the flip-chip film side areas 81 of the N display devices 71 in the second row are all located on the side away from the display devices 71 in the first row.
  • N is 2.
  • the non-on-chip film side areas 82 of the two display devices 71 form a seam.
  • the width of the non-on-chip film side area 82 as an example of 0.9 mm
  • the width of the seam formed by the non-on-chip film side areas 82 of the two display devices 71 can be less than 2 mm.
  • the display device 71 located in the second row is located in the first row at this time.
  • the display device 71 is in an "upside down" state, so the mainboard 72 located in the display device 71 in the first row needs to have an image flip function.
  • the splicing display module provided by the embodiments of the present disclosure can realize normal display of spliced images while also achieving extremely narrow splicing seams.

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Abstract

一种支撑架，用于支撑扩散板，包括：沿第一方向（Y）设置的支撑柱（1）和安装部（2）。安装部（2）包括：在第一方向（Y）上相对设置的弹性连接部（3）和底座（4），弹性连接部（3）与底座（4）相连，支撑柱（1）沿第一方向（Y）延伸，支撑柱（1）靠近安装部（2）的一端与弹性连接部（3）固定，弹性连接部（3）配置为能够在第一方向（Y）上发生弹性形变，以使得支撑柱（1）靠近安装部（2）的一端与底座（4）在第一方向（Y）上的距离发生变化。还提供了一种子背光模组、显示装置和拼接显示模组。

Description

支撑架、子背光模组、显示装置和拼接显示模组 技术领域
本发明涉及显示技术领域，特别涉及一种支撑架、子背光模组、显示装置和拼接显示模组。
背景技术
直下式背光技术就是将背光模组直接放置在液晶面板的正下方，直下式背光可以使得液晶电视的背光亮度更为均匀，画面也更加细腻逼真。
在现有的直下式背光模组中，扩散板四周用中框支撑，置于背板上方，而扩散板较薄且与背板之间存在较大的空间，为了防止扩散板中间凹陷而影响显示画面，常常在扩散板中间设置支撑架以防止扩散板的变形。然而，在实际应用中发现，在安装扩散板的过程中以及使用过程中，不可避免的会出现扩散板与支撑架之间发生碰撞，极其导致出现扩散板碎裂。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一，提出了一种支撑架、子背光模组、显示装置和拼接显示模组。
第一方面，本公开实施例提供了一种支撑架，用于支撑扩散板，包括：沿第一方向设置的支撑柱和安装部，所述安装部包括：在所述第一方向上相对设置的弹性连接部和底座，所述弹性连接部与所述底座相连，所述支撑柱沿所述第一方向延伸，所述支撑柱靠近所述安装部的一端与所述弹性连接部固定，所述弹性连接部配置为能够在所述第一方向上发生弹性形变，以使得所述支撑柱靠近所述安装部的一端与所述底座在所述第一方向上的距离发生变化。
在一些实施例中，所述弹性连接部包括：沿第二方向设置的两个弹性部和连接部，所述连接部位于两个所述弹性部之间，所述弹性部的一端与所述底座相连，所述弹性部的另一端与所述连接部相连， 所述支撑柱靠近所述安装部的一端与所述连接部固定；
所述弹性部配置为能够在所述第一方向上发生弹性形变，以改变所述连接部与所述底座在所述第一方向上的距离，所述第一方向与所述第二方向相交。
在一些实施例中，所述弹性部呈现朝远离所述底座的一侧外凸，所述连接部与所述底座平行设置。
在一些实施例中，所述弹性部包括：依次相连的第一部、第二部和第三部，所述第一部与所述底座相连，所述第三部与所述连接部相连；
从所述第二部与所述第一部连接处，到所述第二部与所述第三部连接处，所述第二部与所述底座在所述第一方向上的垂直距离沿着所述第二方向逐渐增大；
从所述第三部与所述第二部连接处，到所述第三部与所述连接部连接处，所述第三部与所述底座在所述第一方向上的垂直距离沿着所述第二方向逐渐减小。
在一些实施例中，在所述支撑柱上沿着所述第一方向远离所述安装部，所述支撑柱在垂直于所述第一方向的截面面积先保持不变，接着逐渐减小。
在一些实施例中，所述支撑柱在垂直于所述第一方向的截面的截面形状为矩形或梯形；
在一些实施例中，在所述支撑柱上沿着所述第一方向远离所述安装部，所述支撑柱在垂直于所述第一方向的截面面积逐渐减小。
在一些实施例中，所述支撑柱在垂直于所述第一方向的截面的截面形状为圆形；
所述支撑柱靠近所述安装部的一端在垂直于所述第一方向的截面的截面形状半径为4mm～5mm；
所述支撑柱远离所述安装部的一端在垂直于所述第一方向的截面的截面形状半径为0.5mm～1.5mm；
所述支撑柱在所述第一方向上的长度为20mm～30mm。
在一些实施例中，所述底座上设置有第一螺孔。
在一些实施例中，在所述底座上围绕所述第一螺孔的部分朝远离所述支撑柱的一侧外凸。
在一些实施例中，所述弹性连接部、所述底座和所述支撑柱三者为一体成型结构。
第二方面，本公开实施例还提供了一种子背光模组，包括：如上述第一方面中提供的所述支撑架。
在一些实施例中，还包括：背板，所述背板包括底板和侧板，所述侧板位于所述底板的第一侧且与所述底板边缘部分相连；
所述支撑架位于所述底板的第一侧，所述支撑架的所述安装部与所述底板固定。
在一些实施例中，还包括：沿第三方向排布的多个灯条，所述灯条包括沿第四方向排布的多个灯珠；
所述灯珠的数量与所述支撑架的数量的比为6:1～10:1。
在一些实施例中，对于任意一个所述支撑架，所述支撑柱在所述底板上正投影的中心，与距离该支撑架最近的四个灯珠在所述底板上正投影的中心所围成四边形的中心重叠。
在一些实施例中，在所述底板的中轴线上设置有沿所述第四方向排布的多个支撑架；
所述底板的中轴线为经过所述底板的第一侧的表面的中心且沿所述第四方向延伸的虚拟线。
在一些实施例中，所述底板的第一侧的表面包括有沿所述第三方向依次设置的第一周边放置区、中心放置区和第二周边放置区；
所述第一周边放置区和所述第二周边放置区均设置有至少两个支撑架组，所述至少两个支撑架组包括：第一支撑架组和位于所述第一支撑架组远离所述中心放置区的第二支撑架组，且所述第一支撑架组和所述第二支撑架组之间设置有至少两个灯条；
所述第一支撑架组和所述第二支撑架组均包括沿第四方向排布的至少两个所述支撑架，所述第一支撑架组内所述支撑架的数量大于所述第二支撑架组内所述支撑架的数量。
在一些实施例中，在所述灯条背向所述底板的一侧设置有反射 纸；
在所述反射纸上设置有与所述灯珠一一对应的多个第一开孔，所述灯珠从对应第一开孔中露出；
在所述反射纸上设置有与所述支撑架一一对应的多个第二开孔，所述底板上设置有多个第二螺孔；
所述支撑架通过螺丝贯穿对应的所述第二开孔、所述第一螺孔、所述底板上对应的第二螺孔以与所述底板固定。
在一些实施例中，全部所述灯条划分为多个灯条组，每个灯条组包括至少一个灯条，每个灯条组配置有对应的转接板，所述灯条通过第一柔性扁平线缆与对应的所述转接板电连接；
所述转接板固定于所述底板的第一侧，所述转接板通过贯穿所述底板的第二柔性扁平线缆与位于所述底板的第二侧的电源控制模块电连接；
所述底板上对应于所述转接板的所在区域形成有容纳槽，所述转接板位于对应的所述容纳槽内。
在一些实施例中，还包括：中框和扩散板，所述中框与所述背板装配固定；
所述中框包括：第一支撑结构和第二支撑结构，所述第一支撑结构远离所述底板的一侧为第一支撑面，所述第二支撑结构位于所述第一支撑面远离所述底板的一侧；
所述扩散板位于所述第一支撑面远离所述底板的一侧且位于所述第二支撑结构的内侧，所述扩散板与所述第二支撑结构的内侧壁之间形成有间隙空间，所述扩散板在所述第一支撑面上的正投影与所述第一支撑面存在交叠；
在所述第一支撑面与所述扩散板之间设置有导光条；
所述导光条上靠近所述第二支撑结构的第一侧面与所述第二支撑结构的内侧壁相接触；
所述导光条上远离所述第二支撑结构的第二侧面超出所述第一支撑面的内侧边缘。
在一些实施例中，在所述第二支撑结构的内侧壁上形成有棱镜 膜，所述棱镜膜配置为将所述间隙空间内射向所述第二支撑结构的内侧壁的光线朝所述导光条进行反射。
在一些实施例中，所述棱镜膜为菲涅尔棱镜膜。
在一些实施例中，所述中框包括首尾依次相连的四个支撑框条，每个支撑框条均包括所述第一支撑结构和所述第二支撑结构，所述第二支撑结构远离所述底板的一侧为第二支撑面；
所述四个支撑框条包括一个第一支撑框条和三个第二支撑框条；
所述第一支撑框条上的所述第二支撑面的宽度与所述第二支撑框条上的所述第二支撑面的宽度的比为8：1～20：1。
第三方面，本公开实施例还提供了一种显示装置，包括：如上述第二方面中提供的所述子背光模组。
在一些实施例中，所述显示装置还包括：显示面板，所述显示面板与所述第二支撑面固定；
所述显示面板包括有效显示区域和围绕所述有效显示区域的周边区域，所述周边区域包括：一个覆晶薄膜侧区域和三个非覆晶薄膜侧区域；
所述覆晶薄膜侧区域与所述第一支撑框条上的所述第二支撑面相对设置，三个所述非覆晶薄膜侧区域分别与三个所述第二支撑框条上的所述第二支撑面相对设置。
在一些实施例中，所述覆晶薄膜侧区域通过双面胶与所述第一支撑框条上的所述第二支撑面固定；
所述非覆晶薄膜侧区域通过紫外固化胶与对应的所述第二支撑框条上的所述第二支撑面固定。
第四方面，本公开实施例还提供了一种拼接显示模组，包括：2N个显示装置，所述2N个显示装置呈2行、N列的阵列排布，N为正整数；
位于第一行的N个所述显示装置的覆晶薄膜侧区域均位于远离第二行的所述显示装置的一侧；
位于第二行的N个所述显示装置的覆晶薄膜侧区域均位于远离 第一行的所述显示装置的一侧。
附图说明
图1a为本公开实施例提供的支撑架的一种结构示意图；
图1b为图1a所示支撑架的一种截面示意图；
图2a为本公开实施例提供的支撑架的另一种结构示意图；
图2b为图2a所示支撑架的另一种截面示意图；
图3为本公开实施例中子背光模组的一种结构示意图；
图4为图3中A-A’向的一种截面示意图；
图5为本公开实施例中背板的一种俯视示意图；
图6为背板上部分区域的灯珠与支撑架的一种结构示意图；
图7为本公开实施中在背板上设置转接板的一种结构示意图；
图8为相关技术中扩散板的边缘部分放置于第一支撑面时的一种截面示意图；
图9为本公开实施例中扩散板的边缘部分放置于第一支撑面时的一种截面示意图；
图10为本公开实施例中扩散板的边缘部分放置于第一支撑面时的另一种截面示意图；
图11为本公开实施例中中框与背板进行装配的一种结构示意图；
图12A为本公开实施例中中框内四个支撑框条的第二支撑面的一种俯视示意图；
图12B为本公开实施例中相邻两个支撑框条进行连接的一种结构示意图；
图13为本公开实施例中显示装置的一种爆炸结构示意图；
图14为本公开实施例中显示装置的一种截面示意图；
图15a为在第二支撑框条的外侧壁上粘贴第一保护膜的一种结构示意图；
图15b为在第二支撑框条的外侧壁上粘贴第一保护膜的一种截面示意图；
图16a为在第二支撑框条的第二支撑面上粘贴美纹胶带的一种结构示意图；
图16b为在第二支撑框条的第二支撑面上粘贴美纹胶带的一种截面示意图；
图17a为在第二支撑框条的第二支撑面的内侧边缘粘贴第一保护膜的一种结构示意图；
图17b为在第二支撑框条的第二支撑面的内侧边缘粘贴第二保护膜的一种截面示意图；
图18a为在第二支撑框条的第二支撑面上涂覆紫外固化胶的一种结构示意图；
图18b为在第二支撑框条的第二支撑面上涂覆紫外固化胶的一种截面示意图；
图19为将美纹胶带去除后的一种结构示意图；
图20为在美纹胶带被去除区域放置支撑块的一种结构示意图；
图21为本公开实施例中拼接显示模组的一种结构示意图。
具体实施方式
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图对本发明提供的一种支撑架、子背光模组、显示装置和拼接显示模组进行详细描述。
图1为本公开实施例提供的支撑架的一种结构示意图，图2为图1所示支撑架的一种截面示意图，如图1和图2所示，支撑架用于支撑扩散板，支撑架包括：沿第一方向Y设置的支撑柱1和安装部2，安装部2包括：在第一方向Y上相对设置的弹性连接部3和底座4，弹性连接部3与底座4相连，支撑柱1沿第一方向Y延伸，支撑柱1靠近安装部2的一端与弹性连接部3固定，弹性连接部3配置为能够在第一方向Y上发生弹性形变，以使得支撑柱1靠近安装部2的一端与底座4在第一方向Y上的距离发生变化。
在本公开实施例中，通过在底座4与支撑柱1之间设置弹性连接部3，当扩散板与支撑柱1远离安装部2的一端发生碰撞时，弹性 连接部3可因受力而发生弹性形变，以起到缓冲作用，从而能够有效降低扩散板碎裂的风险。
在一些实施例中，弹性连接部3包括：沿第二方向X设置的两个弹性部3a和连接部，连接部位于两个弹性部3a之间，弹性部3a的一端与底座4相连，弹性部3a的另一端与连接部相连，支撑柱1靠近安装部2的一端与连接部固定；弹性部3a配置为能够在第一方向Y上发生弹性形变，以改变连接部与底座4在第一方向Y上的距离，第一方向Y与第二方向X相交。
通过上述两个弹性部3a和连接部3b，其一方面可实现对支撑柱1的稳定支撑，另一方面可以在支撑柱1受到外力左右时能够迅速产生相应弹性形变。
在一些实施例中，弹性部3a呈现朝远离背板的一侧外凸，连接部与底座4平行设置。
在一些实施例中，弹性部3a呈条状，弹性部3a包括：依次相连的第一部301、第二部302和第三部303，第一部301与底座4相连，第三部303与连接部3b相连；从第二部302与第一部301连接处，到第二部302与第三部303连接处，第二部302与底座在第一方向Y上的垂直距离沿着第二方向X逐渐增大；从第三部303与第二部302连接处，到第三部303与连接部连接处，第三部303与底座在第一方向Y上的垂直距离沿着第二方向X逐渐减小。
需要说明的是，弹性连接部3包括两个弹性部3a和一个连接部3b的情况，仅为本公开实施例中的一种可选实施方案，其不会对本公开的技术方案产生限制。在本公开中，弹性连接部3还可以采用其他具备能够在外力作用下产生弹性形变的结构，此处不再一一举例描述。
在一些实施例中，在支撑架未支撑扩散板时，连接部3b与底座4在第一方向Y上的距离为h，0.45mm≤h≤0.55mm。
参见图1a和图1b所示，在一些实施例中，在支撑柱1上沿着第一方向Y远离安装部2，支撑柱1在垂直于第一方向Y的截面面积先保持不变，接着逐渐减小。
在一些实施例中，支撑柱在垂直于第一方向的截面的截面形状为矩形或梯形。
参见图2a和图2b所示，在一些实施例中，在支撑柱1上沿着第一方向Y远离安装部2，支撑柱1在垂直于第一方向Y的截面的截面面积逐渐减小。通过该设计，可使得支撑柱1整体呈现下宽上窄的形貌，其一方面可使得支撑柱1的整体重要较小，另一方面还可以使得支撑柱1底端(靠近安装部2的一端)能够与安装部2具有较大的连接面积，以保证二者之间连接牢固，同时支撑柱1顶端(远离安装部2的一端)不会过大，使得支撑柱1与扩散板之间的接触面板相对较小，有利于提升扩散板的入光量。
此外，考虑到支撑柱1顶端面积越小，则在支撑柱1与扩散板之间发生碰撞时扩散板上所受到的压强越大，扩散板碎裂的风险越高，故在对支撑柱1顶端面积作设计时，不能将支撑柱1顶端面积设计的过小。
在一些实施例中，支撑柱1在垂直于第一方向Y的截面的截面形状为圆形；支撑柱1靠近安装部2的一端在垂直于第一方向Y的截面的截面形状半径为4mm～5mm；支撑柱1远离安装部2的一端在垂直于第一方向Y的截面的截面形状半径为0.5mm～1.5mm；支撑柱1在第一方向Y上的长度为20mm～30mm。
继续参见图1和图2所示，在一些实施例中，底座4上设置有第一螺孔5。在背板上对应于可放置支撑架的区域设置有第二螺孔，在将支撑架与背板进行装配时，仅需通过螺丝贯穿支撑架上的第一螺孔5以及背板上相应位置的第二螺孔，可使得将支撑架固定在背板上的相应位置。
在一些实施例中，在底座4上围绕第一螺孔5的部分6朝远离支撑柱1的一侧外凸。在底板上围绕各第二螺孔的部分会朝背向支撑面的一侧外凸以形成定位槽，在将支撑架与背板进行装配时，可将支撑架上围绕第一螺孔5的外凸部分6置于底板上的定位槽内，其一方面可实现第一螺孔5与第二螺孔的对位，另一方面可起到对支撑架进行限位的作用，以避免支撑架与背板之间发生错位移动。
在一些实施例中，弹性连接部3、底座4和支撑柱1的材料为透明树脂材料，可有效避免支撑架装配至背板上后对背光源的出光产生遮挡。
在一些实施例中，弹性连接部3、底座4和支撑柱1三者为一体成型结构。可选地，可通过注塑成型的方式来形成一体成型的弹性连接部3、底座4和支撑柱1。
图3为本公开实施例中子背光模组的一种结构示意图，图4为图3中A-A’向的一种截面示意图，图5为本公开实施例中背板的一种俯视示意图，图6为背板上部分区域的灯珠与支撑架的一种结构示意图，如图3至图6所示，子背光模组包括支撑架19，支撑架采用上述实施例中所提供的支撑架19，对于支撑架19的描述可参见前面实施例中的内容，此处不再赘述。
在一些实施例中，子背光模组还包括背板12，背板12包括底板12a和侧板12b，侧板12b位于底板12a的第一侧且与底板12a边缘部分相连；支撑架19位于底板12a的第一侧，支撑架19的安装部与底板12a固定。
子背光模组还包括沿第三方向W排布的多个灯条15，灯条15包括沿第四方向Z排布的多个灯珠16；其中，灯条15可通过双面胶粘贴固定于背板12上。
在一些实施例中，灯珠16的数量与支撑架19的数量的比为6:1～10:1。在实际应用中，可根据显示装置的显示亮度需求来设置灯珠16的数量以及排布，同时根据扩散板13的支撑需求来设置支撑架19的数量以及排布。另外，在灯珠16数量一定的情况下，支撑架19的数量越多，对扩散板13的支撑效果越好，但是其对灯条15的出光影响越大。在本公开实施例中综合对灯条15出光效果以及对扩散板13支撑信赖度的考虑，可将灯珠16的数量与支撑架19的数量的比范围设置在6:1～10:1，例如8：1。
在一些实施例中，对于任意一个支撑架19，该支撑架19的支撑柱1在底板12a上正投影的中心，与距离该支撑架19最近的四个灯珠16在底板12a上正投影的中心所围成四边形的中心重叠。
参见图5所示，在一些实施例中，在底板12a的中轴线L上设置有沿第四方向Z排布的多个支撑架19；底板12a的中轴线L为经过底板12a的第一侧的表面的中心且沿第四方向Z延伸的虚拟线。在本公开实施例中，考虑到扩散板中间部分因重力所产生的形变往往最大，故本公开实施例中在底板12a的中轴线L上设置一列支撑架19。
在一些实施例中，底板12a的第一侧的表面包括有沿第三方向W依次设置的第一周边放置区12a1、中心放置区12a2和第二周边放置区12a3；第一周边放置区12a1和第二周边放置区12a3均设置有至少两个支撑架组，至少两个支撑架组包括：第一支撑架组19a和位于第一支撑架组19a远离中心放置区12a2的第二支撑架组19b，且第一支撑架组19a和第二支撑架组19b之间设置有至少两个灯条15；第一支撑架组19a和第二支撑架组19b均包括沿第四方向Z排布的至少两个支撑架19，第一支撑架组19a内支撑架19的数量大于第二支撑架组19b内支撑架19的数量。
附图中仅示例性画出了第一支撑架组19a和第二支撑架组19b之间设置有两个灯条15，第一支撑架组19a包括4个支撑架19、第二支撑架组19b包括2个支撑架19的情况，该情况仅起到示例性作用，其不会对本公开的技术方案产生限制。
在一些实施例中，在中心放置区12a2内的支撑架19沿着第三方向和第四方向呈阵列排布。
参见图5所示，灯条15的数量为20个，每个灯条15包括10个灯珠16，以第三方向W为行方向、第四方向Z为列方向，全部灯珠16呈10行、20列的阵列排布。
支撑架19的数量为24个，具体分布如下：在第二行灯珠16与第三行灯珠16之间、在第四行灯珠16与第五行灯珠16之间、在第六行灯珠16和第七行灯珠16之间、在第八行灯珠16与第九行灯珠16之间，均设置有5个支撑架19且5个支撑架19分别位于第四列灯珠16与第五列灯珠16之间、第七列灯珠16与第八列灯珠16之间、第十列灯珠16与第十一列灯珠16之间、第十三列灯珠16与第十四列灯珠16之间、第十六列灯珠16与第十七列灯珠16之间；在第三 行灯珠16与第四行灯珠16之间、在第七行灯珠16与第八行灯珠16之间，均设置有2个支撑架19且2个支撑架19分别位于第二列灯珠16与第三列灯珠16之间、第十八列灯珠16与第十九列灯珠16之间。
当然，图5中所示灯珠16、支撑架19的数量及分布的情况，仅为本公开实施例中的一种可选实施方案，其不会对本公开的技术方案产生限制。
在一些实施中，在灯条15背向底板12a的一侧设置有反射纸30；在反射纸30上设置有与灯珠16一一对应的多个第一开孔，灯珠16从对应第一开孔中露出。通过在背板12上设置反射纸30可使得射向底板12a的光线被反射至扩散板13，有利于提高光线利用率。
进一步可选地，当支撑架19的底座上设置有第一螺孔时，可在反射纸30上设置与支撑架19一一对应的多个第二开孔，底板12a上设置有多个第二螺孔，通过螺丝贯穿对应的第二开孔、支撑架19上的第一螺孔、底板12a上对应的第二螺孔以使得支撑架19与底板12a固定。
图7为本公开实施中在背板上设置转接板的一种结构示意图，如图6和图7所示，在一些实施例中，全部灯条15划分为多个灯条15组，每个灯条15组包括至少一个灯条15，每个灯条15组配置有对应的转接板20，灯条15通过第一柔性扁平线缆21与对应的转接板20电连接，转接板20固定于底板12a的第一侧，转接板20通过贯穿底板12a的第二柔性扁平线缆22与位于底板12a的第二侧的电源控制模块80(参见后面图13中所示)电连接。
其中，电源控制模块可通过第二柔性扁平线缆22、转接板20、第一柔性扁平线缆21以向灯条15提供电信号。在一些实施例中，电源控制模块具备区域调光(local diming)功能，有利于提升显示画面的对比度。
在一些实施例中，底板12a上对应于转接板20的所在区域形成有容纳槽31，转接板20位于对应的容纳槽31内。具体地，在底板12a上用于放置转接板20的部分朝背向支撑面的一侧外凸以形成容纳槽31，将转接板20放置于该容纳槽31以使得转接板20下沉，以 避免转接板20将灯条15局部顶起。
作为一个具体示例，针对图5中所示20个灯条15，可配置4个转接板20，每个转接板20可与5个灯条15相连。
参见图4所示，在一些实施例中，子背光模组还包括中框11和扩散板13，中框11与背板12装配固定；中框11包括：第一支撑结构11a和第二支撑结构11b，第一支撑结构11a远离底板12a的一侧为第一支撑面，第二支撑结构11b位于第一支撑面远离底板12a的一侧；扩散板13位于第一支撑面远离底板12a的一侧且位于第二支撑结构11b的内侧，扩散板13与第二支撑结构11b的内侧壁之间形成有间隙空间(为方便扩散板13安装所预留的膨胀空间)，扩散板13在第一支撑面上的正投影与第一支撑面存在交叠。在本公开实施例中，可利用第一支撑面来对扩散板13的边缘部分进行支撑，利用支撑架19来对扩散板13的中间部分进行支撑。在一些实施例中，在第一支撑面与扩散板13之间设置有导光条14。
图8为相关技术中扩散板的边缘部分放置于第一支撑面时的一种截面示意图，如图8所示，在相关技术中扩散板13的边缘部分直接搭接在第一支撑面上。由于显示产品的窄边框设计，使得在将显示面板与子背光模组完成装配后，扩散板13搭接在第一支撑面上的部分其在显示面板上的正投影会覆盖显示面板的有效显示区(Active Area，简称AA区)，由于扩散板13搭接在第一支撑面上的部分(称为“低亮度出光部分”)的出光亮度较低，故会导致显示面板上与低亮度出光部分正对的区域(即AA区的边缘部分)所接收到的光线较少，从而导致显示画面的边缘部分的显示亮度较低，即存在“暗边”问题。
图9为本公开实施例中扩散板的边缘部分放置于第一支撑面时的一种截面示意图，如图9所示，为有效解决上述“暗边”问题，在第一支撑面上设置有导光条14，扩散板13搭接在导光条14上。在灯珠16所射出的光线照射至导光条14时，通过导光条14可将光线传导至扩散板13的边缘部分，以使得扩散板13的边缘部分的出光亮度增高，从而使得显示面板的AA区的边缘部分所接收到的光线增多， 显示面板的AA区的边缘部分的显示亮度增高，从而能够有效改善、甚至完全解决“暗边”问题。
在一些实施例中，导光条14上靠近第二支撑结构11b的第一侧面与第二支撑结构11b的内侧壁相接触；导光条14上远离第二支撑结构11b的第二侧面超出第一支撑面的内侧边缘。其中，导光条14上远离第二支撑结构11b的第二侧面超出第一支撑面的内侧边缘的距离越远、导光条14的厚度越厚，射入至导光条14的光线越多，越有利于提升扩散板13的边缘部分的出光亮度。但是，随着导光条14上远离第二支撑结构11b的第二侧面超出第一支撑面的内侧边缘的距离增加，导光板的重心会朝远离第二支撑结构11b的内侧壁的方向偏移，当导光板的重心偏移至超出第一支撑面的内侧边缘时，则导光板容易发生倾，不利于导光板的装配；另外，随着导光条14厚度的增加，会导致扩散板13以及光学膜片18的装配空间缩小，不利于扩散板13以及光学膜片18的装配。
综合考虑扩散板13的边缘部分的出光亮度以及导光板/扩散板13/光学膜片18的装配难度，在本公开实施例中，导光条14在第一方向上的厚度设置为1.2mm～1.6mm，例如1.4mm；导光条14上远离第二支撑结构11b的第二侧面超出第一支撑面的内侧边缘1mm～2mm，例如1.5mm。
由于扩散板13与第二支撑结构11b的内侧壁之间形成有间隙空间35，导光条14上会有部分光线射入至间隙空间35，其中小部分光线会以小角度(光线与导光板表面的法线所呈夹角)方向穿过间隙空间35，而大部分光线会以大角度方向射向第二支撑结构11b的内侧壁。由于内侧壁一般是采用金属材料制备，其表面具有较佳的镜面反射特性，从而会对照射至其表面的光线进行镜面反射，反射光线会以大角度射向显示面板的AA区的边缘部分。此时，显示面板的AA区的边缘部分会出正视发暗、侧视发亮的现象。
图10为本公开实施例中扩散板的边缘部分放置于第一支撑面时的另一种截面示意图，如图10所示，为改善显示面板的AA区的边缘部分会出正视发暗、侧视发亮的问题，本公开的技术方案在第二支撑 结构11b的内侧壁上形成有棱镜膜32，棱镜膜32配置为将间隙空间35内射向第二支撑结构11b的内侧壁的光线朝导光条14进行反射。也就是说，以大角度射向第二支撑结构11b的内侧壁的光线会被棱镜膜32反射至导光条14，其中到达导光条14的部分光线会折射进入导光条14并在导光条14再次进行光传导，且最终以小角度方向穿过间隙空间35。通过该技术方案，可使得间隙空间35内的大角度方向出射光线的数量减少，而小角度方向出射光线的数量增多，从而能够有效改善、甚至完全解决显示面板的AA区的边缘部分正视发暗、侧视发亮的问题。
在实际应用中，为预留装配误差空间，会将棱镜膜32的面积设计的略小于第二支撑结构11b的内侧壁上未与导光条相接触部分的面积。当然，在不考虑装配误差空间的情况下，棱镜膜32可以正好覆盖第二支撑结构11b的内侧壁上未与导光条相接触的部分(棱镜膜32的面积设计的等于第二支撑结构11b的内侧壁上未与导光条相接触部分的面积)。
需要说明的是，可根据实际调光需要来对棱镜膜上的各棱镜的尺寸和反射角度作预先模拟和设计，以满足实际使用需求即可。在一些实施例中，棱镜膜为菲涅尔棱镜膜。
图11为本公开实施例中中框与背板进行装配的一种结构示意图，如图11所示，在一些实施例中，中框11还包括与背板12进行固定的装配部11c，装配部11c位于第二支撑结构11b远离第二支撑结构11b的一侧，其中装配部11c上形成有沉槽11d，沉槽11d的开口背向第一支撑结构11a。背板12上的侧板12b与底板12a相连的第一支撑板1201、与第一支撑板1201相连的第一支撑板1202以及与第一支撑板1202相连的第三支撑板1203，其中第一支撑板1201、第一支撑板1202和第三支撑板1203为基于同一板材通过二次弯折形成。沉槽11d的外侧壁和第三支撑板1203上均形成螺孔，通过将第三支撑板1203置于沉槽11d内并利用螺丝17穿过外侧壁和第三支撑板1203上的螺孔，以实现将背板12与中框11的固定。在一些实施例中，第三支撑板1203的端部与沉槽11d的底板12a相接触，装配 部11c上用于围成沉槽11d且形成有螺孔的侧壁与第一支撑板1202相接触，从而能实现板与中框11的稳定装配。
图12A为本公开实施例中中框内四个支撑框条的第二支撑面的一种俯视示意图，图12B为本公开实施例中相邻两个支撑框条进行连接的一种结构示意图，如图12A和图12B所示，在一些实施例中，中框11包括首尾依次相连的四个支撑框条40，每个支撑框条40，均包括第一支撑结构11a和第二支撑结构11b，其中可通过角块来将相邻两个支撑框条40的两端进行固定。
在一些实施例中，角块具有相垂直的第一连接条和第二连接条，第一连接条和第二连接条均设置有螺孔，装配部11c上用于围成沉槽的侧壁且处于支撑框条端部位置也形成有螺孔，可将角块43的第一连接条和第二连接条放置于待连接的两个支撑框条的沉槽11d内，并利用螺丝44贯穿位于支撑框条端部位置的螺孔和第一连接条/第二连接条上的螺孔，以使得待连接的两个支撑框条40与同一个角块进行。
在一些实施例中，第一连接条和第二连接条上均设置有定位凸包45，支撑框条40端部位置形成有定位开口，通过将第一连接条/第二连接条上的定位凸包45置于定位开口内，以实现将支撑框条40与第一连接条或第二连接条进行定位，以方便后续利用螺丝44来对支撑框条与第一连接条或第二连接条进行固定。
在一些实施例中，第二支撑结构11b远离底板12a的一侧为第二支撑面；四个支撑框条包括一个第一支撑框条41和三个第二支撑框条42；第一支撑框条41上的第二支撑面的宽度与第二支撑框条42上的第二支撑面的宽度的比为8：1～20：1，例如40：3。
在一些实施例中，第一支撑框条41上的第二支撑面的宽度为10mm～14mm，例如12mm；第二支撑框条42上的第二支撑面的宽度为0.8mm～1.2mm，例如0.9mm。
在实际应用中，可根据实际需要来对各支撑框条上的第二支撑面的宽度进行设计和调整。
基于同一发明构思，本公开实施例还提供了一种显示装置。图 13为本公开实施例中显示装置的一种爆炸结构示意图，图14为本公开实施例中显示装置的一种截面示意图，如图13和图14所示，该显示面板包括子背光模组，其中子背光模组可采用上面实施例中所提供的子背光模组，对于该子背光模组的具体描述，可参见前面实施例中的内容，此处不再赘述。
在一些实施例中，当中框11包括四个支撑框条且四个支撑框条包括一个第一支撑框条41和三个第二支撑框条42时，显示装置还包括：显示面板51，显示面板51与各支撑框条40的第二支撑面固定；显示面板包括有效显示区域和围绕有效显示区域的周边区域，周边区域包括：一个覆晶薄膜侧区域和三个非覆晶薄膜侧区域；覆晶薄膜侧区域与第一支撑框条41上的第二支撑面相对设置，三个非覆晶薄膜侧区域分别与三个第二支撑框条42上的第二支撑面相对设置。
其中，覆晶薄膜侧区域用于实现覆晶薄膜(Chip On Film，简称COF)工艺；其中，COF工艺是指：将显示驱动IC芯片置入柔性的FPC排线中，再利用FPC本身的特性翻折至屏幕下方。具体来说，通过热压合，IC芯片的金凸快(Gold Bump)和软性基板电路上的内引脚(Inner Lead)将进行结合(bonding)。由于IC芯片所占用的空间被释放，从而可以有效降低边框宽度。
在一些实施例中，覆晶薄膜侧区域通过双面胶50a与第一支撑框条41上的第二支撑面固定；非覆晶薄膜侧区域通过紫外固化胶50b与对应的第二支撑框条42上的第二支撑面固定。
图15a为在第二支撑框条的外侧壁上粘贴第一保护膜的一种结构示意图，图15b为在第二支撑框条的外侧壁上粘贴第一保护膜的一种截面示意图，图16a为在第二支撑框条的第二支撑面上粘贴美纹胶带的一种结构示意图，图16b为在第二支撑框条的第二支撑面上粘贴美纹胶带的一种截面示意图，图17a为在第二支撑框条的第二支撑面的内侧边缘粘贴第一保护膜的一种结构示意图，图17b为在第二支撑框条的第二支撑面的内侧边缘粘贴第二保护膜的一种截面示意图，图18a为在第二支撑框条的第二支撑面上涂覆紫外固化胶的一种结构示意图，图18b为在第二支撑框条的第二支撑面上涂覆紫外固化胶的 一种截面示意图，图19为将美纹胶带去除后的一种结构示意图，图20为在美纹胶带被去除区域放置支撑块的一种结构示意图，如图15a至图20所示，在本公开实施例中，在子背光模组完成组装后，将显示面板51与中框11上的各第二支撑面进行固定的工艺流程如下：
首先，参见图15a和图15b所示，在中框11的各第二支撑框条的外侧壁上粘贴第一保护膜61，第一保护膜61的作用是保障在后续第二支撑面上涂覆紫外固化胶过程中若发生溢胶情况后，避免溢出胶水与第二支撑框条的外侧壁相接触。
然后，参见图116a和图16b所示，在中框11的各第二支撑框条的第二支撑面上间隔粘贴美纹胶带62，例如在每个第二支撑面上间隔粘贴3～5条宽度为10mm的美纹胶带62。
再然后，参见图17a和图17b所示，在第二支撑框条的第二支撑面的内侧边缘粘贴第二保护膜63，第二保护膜63可覆盖至光学膜片18的边缘，第二保护膜63的作用是保障在后续第二支撑面上涂覆紫外固化胶过程中若发生溢胶情况后，避免溢出胶水与子背光模组中的光学膜片18相接触。
接着，参见图18a和图18b所示，通过涂胶枪在第二支撑框条的第二支撑面上连续涂覆紫外固化胶64，其中紫外固化胶64会覆盖美纹胶带62位于第二支撑面的部分，涂胶宽度控制为0.6mm～0.8mm宽度，高度为0.4mm～0.5mm。
再接着，参见图19所示，将美纹胶带62去除，此时覆盖在美纹胶带62上方的紫外固化胶64被一并去除，故在原覆盖有美纹胶带的区域形成缺口65。
再接着，参见图20所示，在缺口65内放置支撑块66，支撑块66可以为宽度为5mm、厚度为2mm的泡棉。
再接着，在第一支撑框条的第二支撑面上粘贴双面胶带(该步骤也可提前执行)，并去除第一保护膜61和第二保护膜63。
再接着，将显示面板51放置于支撑块66之上，并将显示面板51与子背光模组进行对位，此时显示面板51未与紫外固化胶64相接触。
再接着，对依次对各第二支撑框条上的紫外固化胶64进行固化处理并拆除相应支撑块。具体地，对某一第二支撑框条进行紫外固化并拆除相应支撑块的过程如下：对该第二支撑框条上的紫外固化胶64进行固化的同时，逐个卸掉该第二支撑框条上的支撑块66，并轻触按压显示面板以使得显示面板与该第二支撑框条上的紫外固化胶进行接触，直至紫外固化胶完全固化。
最后，轻触按压(100Kpa压力进行保压30s)显示面板的覆晶薄膜侧区域，以使得显示面板的覆晶薄膜侧区域的部分与双面胶带固定。
在一些实施例中，为避免显示面板的侧面漏光以及对显示面板的周边区域进行遮挡，可利用遮光胶带52对显示面板51的侧面以及显示面板51的周边区域进行覆盖。
基于同一发明构思，本公开实施例还提供了一种拼接显示模组。图21为本公开实施例中拼接显示模组的一种结构示意图，如图21所示，在一些实施例中，拼接显示模组显示装置，其中显示装置采用前面实施例中所提供的显示装置。
在一些实施例中，显示装置71的周边区域包括：一个覆晶薄膜侧区域81和三个非覆晶薄膜侧区域82；覆晶薄膜侧区域81与第一支撑框条上的第二支撑面相对设置，三个非覆晶薄膜侧区域82分别与三个第二支撑框条上的第二支撑面相对设置。
拼接显示模组具体包括2N个显示装置71，2N个显示装置71呈2行、N列的阵列排布，N为正整数；位于第一行的N个显示装置71的覆晶薄膜侧区域81均位于远离第二行的显示装置71的一侧；位于第二行的N个显示装置71的覆晶薄膜侧区域81均位于远离第一行的显示装置71的一侧。附图中仅示例性画出了N取值为2的情况。
也就是说，对于任意相邻的两个显示装置71，该两个显示装置71的非覆晶薄膜侧区域82形成拼缝。以非覆晶薄膜侧区域82的宽度为0.9mm为例，则两个显示装置71的非覆晶薄膜侧区域82形成拼缝的宽度可小于2mm。
以位于第二行的显示装置71为正常放置为例，此时位于第一行 的显示装置71呈“倒放置”状态，故需要使得位于第一行的显示装置71内的主板72具备图像翻转功能。
本公开实施例所提供的拼接显示模组，在实现拼接画面正常显示的同时还能实现极窄拼缝。
可以理解的是，以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式，然而本发明并不局限于此。对于本领域内的普通技术人员而言，在不脱离本发明的精神和实质的情况下，可以做出各种变型和改进，这些变型和改进也视为本发明的保护范围。

Claims (27)

  1. 一种支撑架，用于支撑扩散板，其特征在于，包括：沿第一方向设置的支撑柱和安装部，所述安装部包括：在所述第一方向上相对设置的弹性连接部和底座，所述弹性连接部与所述底座相连，所述支撑柱沿所述第一方向延伸，所述支撑柱靠近所述安装部的一端与所述弹性连接部固定，所述弹性连接部配置为能够在所述第一方向上发生弹性形变，以使得所述支撑柱靠近所述安装部的一端与所述底座在所述第一方向上的距离发生变化。
  2. 根据权利要求1所述的支撑架，其特征在于，所述弹性连接部包括：沿第二方向设置的两个弹性部和连接部，所述连接部位于两个所述弹性部之间，所述弹性部的一端与所述底座相连，所述弹性部的另一端与所述连接部相连，所述支撑柱靠近所述安装部的一端与所述连接部固定；
    所述弹性部配置为能够在所述第一方向上发生弹性形变，以改变所述连接部与所述底座在所述第一方向上的距离，所述第一方向与所述第二方向相交。
  3. 根据权利要求2所述的支撑架，其特征在于，所述弹性部呈现朝远离所述底座的一侧外凸，所述连接部与所述底座平行设置。
  4. 根据权利要求3所述的支撑架，其特征在于，所述弹性部包括：依次相连的第一部、第二部和第三部，所述第一部与所述底座相连，所述第三部与所述连接部相连；
    从所述第二部与所述第一部连接处，到所述第二部与所述第三部连接处，所述第二部与所述底座在所述第一方向上的垂直距离沿着所述第二方向逐渐增大；
    从所述第三部与所述第二部连接处，到所述第三部与所述连接部连接处，所述第三部与所述底座在所述第一方向上的垂直距离沿着 所述第二方向逐渐减小。
  5. 根据权利要求1所述的支撑架，其特征在于，在所述支撑柱上沿着所述第一方向远离所述安装部，所述支撑柱在垂直于所述第一方向的截面面积先保持不变，接着逐渐减小。
  6. 根据权利要求5所述的支撑架，其特征在于，所述支撑柱在垂直于所述第一方向的截面的截面形状为矩形或梯形；
  7. 根据权利要求1所述的支撑架，其特征在于，在所述支撑柱上沿着所述第一方向远离所述安装部，所述支撑柱在垂直于所述第一方向的截面面积逐渐减小。
  8. 根据权利要求7所述的支撑架，其特征在于，所述支撑柱在垂直于所述第一方向的截面的截面形状为圆形；
    所述支撑柱靠近所述安装部的一端在垂直于所述第一方向的截面的截面形状半径为4mm～5mm；
    所述支撑柱远离所述安装部的一端在垂直于所述第一方向的截面的截面形状半径为0.5mm～1.5mm；
    所述支撑柱在所述第一方向上的长度为20mm～30mm。
  9. 根据权利要求1所述的支撑架，其特征在于，所述底座上设置有第一螺孔。
  10. 根据权利要求9所述的支撑架，其特征在于，在所述底座上围绕所述第一螺孔的部分朝远离所述支撑柱的一侧外凸。
  11. 根据权利要求1至10中任一所述的支撑架，其特征在于，所述弹性连接部、所述底座和所述支撑柱三者为一体成型结构。
  12. 一种子背光模组，其特征在于，包括：如上述权利要求1至11中任一所述的支撑架。
  13. 根据权利要求12所述的子背光模组，其特征在于，还包括：背板，所述背板包括底板和侧板，所述侧板位于所述底板的第一侧且与所述底板边缘部分相连；
    所述支撑架位于所述底板的第一侧，所述支撑架的所述安装部与所述底板固定。
  14. 根据权利要求13所述的子背光模组，其特征在于，还包括：沿第三方向排布的多个灯条，所述灯条包括沿第四方向排布的多个灯珠；
    所述灯珠的数量与所述支撑架的数量的比为6:1～10:1。
  15. 根据权利要求14所述的子背光模组，其特征在于，对于任意一个所述支撑架，所述支撑柱在所述底板上正投影的中心，与距离该支撑架最近的四个灯珠在所述底板上正投影的中心所围成四边形的中心重叠。
  16. 根据权利要求15所述的子背光模组，其特征在于，在所述底板的中轴线上设置有沿所述第四方向排布的多个支撑架；
    所述底板的中轴线为经过所述底板的第一侧的表面的中心且沿所述第四方向Z延伸的虚拟线。
  17. 根据权利要求16所述的子背光模组，其特征在于，所述底板的第一侧的表面包括有沿所述第三方向依次设置的第一周边放置区、中心放置区和第二周边放置区；
    所述第一周边放置区和所述第二周边放置区均设置有至少两个支撑架组，所述至少两个支撑架组包括：第一支撑架组和位于所述第一支撑架组远离所述中心放置区的第二支撑架组，且所述第一支撑架 组和所述第二支撑架组之间设置有至少两个灯条；
    所述第一支撑架组和所述第二支撑架组均包括沿第四方向排布的至少两个所述支撑架，所述第一支撑架组内所述支撑架的数量大于所述第二支撑架组内所述支撑架的数量。
  18. 根据权利要求14所述的子背光模组，其特征在于，所述支撑架为权利要求9中所述支撑架，在所述灯条背向所述底板的一侧设置有反射纸；
    在所述反射纸上设置有与所述灯珠一一对应的多个第一开孔，所述灯珠从对应第一开孔中露出；
    在所述反射纸上设置有与所述支撑架一一对应的多个第二开孔，所述底板上设置有多个第二螺孔；
    所述支撑架通过螺丝贯穿对应的所述第二开孔、所述第一螺孔、所述底板上对应的第二螺孔以与所述底板固定。
  19. 根据权利要求14所述的子背光模组，其特征在于，全部所述灯条划分为多个灯条组，每个灯条组包括至少一个灯条，每个灯条组配置有对应的转接板，所述灯条通过第一柔性扁平线缆与对应的所述转接板电连接；
    所述转接板固定于所述底板的第一侧，所述转接板通过贯穿所述底板的第二柔性扁平线缆与位于所述底板的第二侧的电源控制模块电连接；
    所述底板上对应于所述转接板的所在区域形成有容纳槽，所述转接板位于对应的所述容纳槽内。
  20. 根据权利要求13所述的子背光模组，其特征在于，还包括：中框和扩散板，所述中框与所述背板装配固定；
    所述中框包括：第一支撑结构和第二支撑结构，所述第一支撑结构远离所述底板的一侧为第一支撑面，所述第二支撑结构位于所述第一支撑面远离所述底板的一侧；
    所述扩散板位于所述第一支撑面远离所述底板的一侧且位于所述第二支撑结构的内侧，所述扩散板与所述第二支撑结构的内侧壁之间形成有间隙空间，所述扩散板在所述第一支撑面上的正投影与所述第一支撑面存在交叠；
    在所述第一支撑面与所述扩散板之间设置有导光条；
    所述导光条上靠近所述第二支撑结构的第一侧面与所述第二支撑结构的内侧壁相接触；
    所述导光条上远离所述第二支撑结构的第二侧面超出所述第一支撑面的内侧边缘。
  21. 根据权利要求20所述的子背光模组，其特征在于，在所述第二支撑结构的内侧壁上形成有棱镜膜，所述棱镜膜配置为将所述间隙空间内射向所述第二支撑结构的内侧壁的光线朝所述导光条进行反射。
  22. 根据权利要求21所述的子背光模组，其特征在于，所述棱镜膜为菲涅尔棱镜膜。
  23. 根据权利要求20所述的子背光模组，其特征在于，所述中框包括首尾依次相连的四个支撑框条，每个支撑框条均包括所述第一支撑结构和所述第二支撑结构，所述第二支撑结构远离所述底板的一侧为第二支撑面；
    所述四个支撑框条包括一个第一支撑框条和三个第二支撑框条；
    所述第一支撑框条上的所述第二支撑面的宽度与所述第二支撑框条上的所述第二支撑面的宽度的比为8：1～20：1。
  24. 一种显示装置，其特征在于，包括：如上述权利要求12至23中任一所述子背光模组。
  25. 根据权利要求24所述的显示装置，其特征在于，所述子背光模组为权利要求23中所述子背光模组，所述显示装置还包括：显示面板，所述显示面板与所述第二支撑面固定；
    所述显示面板包括有效显示区域和围绕所述有效显示区域的周边区域，所述周边区域包括：一个覆晶薄膜侧区域和三个非覆晶薄膜侧区域；
    所述覆晶薄膜侧区域与所述第一支撑框条上的所述第二支撑面相对设置，三个所述非覆晶薄膜侧区域分别与三个所述第二支撑框条上的所述第二支撑面相对设置。
  26. 根据权利要求25所述的显示装置，其特征在于，所述覆晶薄膜侧区域通过双面胶与所述第一支撑框条上的所述第二支撑面固定；
    所述非覆晶薄膜侧区域通过紫外固化胶与对应的所述第二支撑框条上的所述第二支撑面固定。
  27. 一种拼接显示模组，包括：2N个显示装置，所述显示装置采用上述权利要求25或26所述显示装置，所述2N个显示装置呈2行、N列的阵列排布，N为正整数；
    位于第一行的N个所述显示装置的覆晶薄膜侧区域均位于远离第二行的所述显示装置的一侧；
    位于第二行的N个所述显示装置的覆晶薄膜侧区域均位于远离第一行的所述显示装置的一侧。
PCT/CN2023/077077 2022-03-31 2023-02-20 支撑架、子背光模组、显示装置和拼接显示模组 WO2023185313A1 (zh)

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