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WO2021082561A1 - 背光模组、显示模组及其组装方法 - Google Patents

背光模组、显示模组及其组装方法 Download PDF

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Publication number
WO2021082561A1
WO2021082561A1 PCT/CN2020/105147 CN2020105147W WO2021082561A1 WO 2021082561 A1 WO2021082561 A1 WO 2021082561A1 CN 2020105147 W CN2020105147 W CN 2020105147W WO 2021082561 A1 WO2021082561 A1 WO 2021082561A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
fixing member
board
card
plate
Prior art date
Application number
PCT/CN2020/105147
Other languages
English (en)
French (fr)
Inventor
沈云奔
生礼华
陆洲
周峰
Original Assignee
京东方科技集团股份有限公司
高创(苏州)电子有限公司
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, 高创(苏州)电子有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US17/265,913 priority Critical patent/US11442307B2/en
Publication of WO2021082561A1 publication Critical patent/WO2021082561A1/zh
Priority to US17/818,018 priority patent/US11829032B2/en

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • 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
    • 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
    • G02F1/133314—Back frames
    • 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
    • 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
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details
    • 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

Definitions

  • the present disclosure relates to the field of display technology, and in particular to a backlight module, a display module and an assembly method thereof.
  • a backlight module including:
  • a fixing piece, the fixing piece is fixedly connected with the back plate;
  • the inserting card includes a mounting part and a clamping part, the mounting part is fixedly connected to the fixing part, and the clamping part is used to connect to a circuit inserted between the fixing part and the inserting card Board card connection.
  • the fixing member is fixedly connected to the back side of the back plate.
  • the backlight module further includes a frame or support, wherein the fixing member is fixedly connected to the frame or the support, and the frame or the support is fixedly connected to the backplane.
  • the fixing member includes a first plate portion and a second plate portion located on the back side of the first plate portion.
  • the inserting card includes a first inserting card, and the first inserting card is used to fix the screen driving board of the liquid crystal panel to the back of the first board part;
  • the clamping portion of the first insertion card has a clamping slot for clamping with the screen driving board.
  • the first inserting card member further includes an inserting guide portion located on a side of the clamping portion away from the mounting portion and having a guiding inclined surface.
  • the inserting card further includes a second inserting card substantially flush with the second plate portion, and the second inserting card is used to fix the main board of the display device to approximately A position parallel to the second plate portion;
  • the clamping portion of the second inserting card includes a pair of hooks arranged oppositely and in opposite clamping directions, and the pair of hooks are used to communicate with the The motherboard card is connected.
  • the fixing member further includes a connecting portion connecting the first plate portion and the second plate portion, and the first plate portion, the connecting portion, and the second plate portion constitute a guide rail Groove; the installation part of the inserting card is assembled in the guide rail groove through a gap and fixedly connected with the second plate part by a fastener.
  • the second plate portion is parallel to the light emitting surface of the backlight module, the plane where the first plate portion is located intersects the plane where the second plate portion is located, and the cross section of the rail groove is Wedge.
  • the backlight module further includes: at least one optical function film layer located on the front side of the back plate; the at least one optical function film layer includes a reflective sheet, wherein the fixing member and the inserting card member are located Between the reflective sheet and the back plate.
  • the reflective sheet includes a plane portion and a folded portion located at the periphery of the plane portion and folded toward the light emitting surface of the backlight module; the fixing member and the inserting card member are located at the Between the folded portion of the reflective sheet and the back plate.
  • the backlight module further includes: a light bar located between the reflective sheet and the back plate, and the light-emitting chip of the light bar penetrates the hole opened on the reflective sheet.
  • the second plate portion and the connecting portion are connected in a T shape, and the second plate portion has a first notch with an opening facing away from the inserting card.
  • the backplane is a flat backplane.
  • the bracket when the fixing member is fixedly connected to the bracket, the bracket includes a first side portion, a second side portion, and a third side portion, wherein the first side portion And the second side edge portion are opposite to each other, the two ends of the third side edge portion are respectively connected with the first side edge portion and the second side edge portion; the fixing member is arranged on the fourth side opposite to the third side edge portion, And the fixing member is respectively fixedly connected with the first side edge portion and the second side edge portion through fasteners.
  • the fixing member further includes a bending portion connected to the first plate portion and bent toward the end side of the backlight module, and the bending portion has a flexible circuit connection for avoiding the liquid crystal panel.
  • the second notch of the board is not limited to the fixing member.
  • a display module including: the backlight module according to any one of the foregoing embodiments; a circuit board; and a liquid crystal panel.
  • the circuit board is inserted between the fixing member and the inserting card member in the backlight module.
  • the circuit board includes at least one of the following: a screen driver board of the liquid crystal panel, and a main board of a display device.
  • a method for assembling a display module including:
  • the circuit board is inserted between the fixing member and the inserting card member in the backlight module.
  • the circuit board includes at least one of the following: a screen driver board of the liquid crystal panel, and a main board of a display device.
  • the backlight module is assembled through the following steps:
  • the fixing member is fixed to the bracket, wherein the bracket includes a first side portion, a second side portion, and a third side portion, wherein the first side portion and the second side portion are opposite to each other, and the third side
  • the two ends of the side portion are respectively connected to the first side portion and the second side portion;
  • the fixing member is arranged on a fourth side opposite to the third side portion, and the fixing member is connected to the first side portion by a fastener.
  • One side and the second side are fixedly connected;
  • the insertion card Fixing the insertion card to the fixing part, the insertion card being used for fixing the circuit board inserted between the fixing part and the insertion card;
  • the assembly efficiency and the assembly yield during the production process of the display device can be improved.
  • FIG. 1a is a schematic cross-sectional view of a backlight module of a display module according to some embodiments of the disclosure
  • FIG. 1b is a schematic cross-sectional view of a backlight module of a display module according to some other embodiments of the disclosure
  • FIG. 2 is an exploded schematic diagram of the display module of some embodiments of the disclosure.
  • FIG. 3 is a schematic diagram of the assembly of the fixing member, the inserting card member and the circuit board in some embodiments of the present disclosure
  • Fig. 4a is an enlarged schematic diagram of A in Fig. 3;
  • Fig. 4b is a schematic diagram of the first inserting card in Fig. 3;
  • Fig. 5a is an enlarged schematic diagram of B in Fig. 3;
  • Fig. 5b is a schematic diagram of the second inserting card in Fig. 3.
  • FIG. 6 is a flowchart of a method for assembling a backlight module in some embodiments of the disclosure.
  • FIG. 7 is a flowchart of a method for assembling a display module according to some embodiments of the disclosure.
  • a specific element when it is described that a specific element is located between the first element and the second element, there may or may not be an intermediate element between the specific element and the first element or the second element.
  • the embodiments of the present disclosure provide a backlight module, a display module and an assembly method thereof, so as to improve the assembly efficiency and assembly yield during the production process of the display device.
  • the "back side” of a component (or assembly) refers to the side of the component away from the viewer when the display device is in normal use.
  • the “front side” of the component refers to the side of the component near the viewer. The side of the person.
  • the "ground side” of the component (or assembly) refers to the side closer to the ground
  • the "sky side” refers to the side that is closer to the ground. The ground side is the side farther away from the ground.
  • the “left side” refers to the side closer to the viewer's left hand side
  • the “right side” refers to the side closer to the viewer's right hand side.
  • the above-mentioned “ground side”, “sky side”, “left side”, and “right side” are only the position information when the display device is kept in one use state.
  • display devices with multiple use states For example, a display device with both horizontal and vertical screens, when the use state changes, for example, the horizontal screen state is converted to the vertical screen state, the position of each component will also change accordingly.
  • a backlight module 7 including:
  • the fixing member 1 is fixedly connected to the back plate 6b;
  • the inserting card 2 includes a mounting part 21 and a clamping part 22, the mounting part 21 is fixedly connected to the fixing part 1, and the clamping part 22 is used to insert the circuit board between the fixing part 1 and the inserting card 2 (such as The screen driving board 83) of the liquid crystal panel 8 shown in the figure is clamped.
  • the backlight module 7 also includes at least one optical function film layer 3 on the front side of the back plate 6b.
  • the liquid crystal panel 8 of the display device includes a main body 81, at least one screen driving board 83, and a flexible circuit connecting board 82 connecting the main body 81 and the screen driving board 83.
  • the main body 81 is a liquid crystal cell structure for screen display;
  • the screen driver board 83 is also called a logic board, and is used to output drive signals to the main body 81, such as data suitable for the main body 81 and the data signals and control signals of the gate drive IC. Clock signals, etc.;
  • the flexible circuit connection board 82 is flexible and bendable, and is used to transmit signals between the screen driver board 83 and the main body 81.
  • the specific type of the backlight module 7 is not limited. For example, it may be a direct type backlight module as shown in FIG. 1a or an edge type backlight module as shown in FIG. 1b.
  • the backlight module 7 is a direct type backlight module, and a light bar 4 as a light source is arranged on the back side of at least one optical function film layer 3.
  • the at least one optical functional film layer 3 is respectively a reflective sheet 31, a diffuser plate 32 and at least one optical film 33 arranged in sequence from the back to the front.
  • the light-emitting chip 40 (such as a light-emitting diode) of the light bar 4 passes through a hole opened on the reflective sheet 31.
  • the reflection sheet 31 and the diffusion plate 32 are spaced apart.
  • the backlight module 7 is an edge-type backlight module
  • the at least one optical function film layer 3 is a reflective sheet 31, a light guide plate 34, and at least An optical film 33
  • the light bar 4 as a light source is arranged on the end side of the light guide plate 34, and the light-emitting chip of the light bar 4 faces the end surface of the light guide plate 34.
  • the backlight module 7 includes a backplane (the backplane 6b in FIG. 1a and the backplane 6a in FIG. 1b) and a frame 5.
  • the back plate and the frame 5 are fixedly connected to support and limit the optical components contained therein.
  • the frame 5 also supports and limits the liquid crystal panel 8.
  • the frame 5 may be made of metal or plastic materials.
  • the fixing member and the inserting card member are located on the back side of the backplane.
  • the fixing member 1 is fixed to the back plate 6a.
  • the fixing member may also be fixed to the frame by an extended bent portion.
  • a display device including such a backlight module 7 also needs to be provided with a rear case (not shown in FIG. 1b) to cover the circuit board and other components.
  • the fixing member 1 and the inserting card 2 are located between the reflective sheet 31 and the back plate 6b, and the fixing member 1 passes through the extended bent portion Fixed to the frame 5, at this time, the back plate 6b of the backlight module 7 can be used as the back shell of the display device at the same time.
  • the backplane 6b can be a flat backplane, for example, it can be a transparent, opaque, or a glass backplane with a certain decorative effect.
  • a display device containing such a backlight module 7 does not need to be additionally provided with a rear shell, which not only has a lower cost, but also has a slimmer appearance and a more beautiful appearance. After being wall-mounted, it can be perfectly attached to the wall, and the back is not easy to accumulate dust.
  • the circuit board may be the screen driving board 83 of the liquid crystal panel 8 as shown in FIGS. 1a and 1b.
  • the circuit board may also be the main board of a display device or the like.
  • the functions of the TV motherboard can include: processing key signals, responding to remote control signals, directly or indirectly controlling the backlight, receiving various video signals, and converting images into low-voltage differential signals and sending them to the LCD panel
  • the screen driver board, the sound signal is output to the speaker, etc.
  • the mounting positions of the fixing member 1 and the inserting card 2 can be designed according to the fixing position required by the circuit board, so that the circuit board can be inserted into the fixing member 1 and the inserting card from the edge of the backlight module. Between 2.
  • the fixing member 1 and the inserting card 2 can be arranged close to the ground side edge of the backlight module 7, so as to facilitate the insertion of the circuit board from the ground side.
  • the module In the assembly process of the related art liquid crystal display device, after the assembly process of the front LCD panel body is completed, the module needs to be turned over to fix the screen driver board of the LCD panel with screws on the back of the module. This turning operation is not only cumbersome and laborious, but also Moreover, it is easy to cause damage to the liquid crystal panel during the inversion process.
  • the motherboard of the related art liquid crystal display device is also fixed on the back of the module with screws, and similar technical problems also exist.
  • the assembler fixes the screen driver board of the liquid crystal panel or the circuit board of the main board of the display device, it is not necessary to turn the module over, and the circuit can be directly inserted through the card.
  • the board can be inserted and fixed, which not only saves time and effort, but also avoids damage to the module caused by the overturning operation, thereby improving the assembly efficiency and assembly yield.
  • the screen driving board 83 of the liquid crystal panel 8 is directly folded to the back side and inserted into the fixing member 1 and the inserting card 2 In between, it can be fixed by inserting the card 2.
  • it not only simplifies the assembly operation process and improves the assembly efficiency, but also avoids the damage of the liquid crystal panel caused by the module turning operation, thereby improving the assembly yield.
  • the backlight module 7 includes a frame 5.
  • the fixing member 1 can be fixed to the frame 5 through an extended bent portion.
  • the fixing member 1 is fixed to the back of the back plate 6a.
  • the backlight module includes a bracket 50 that includes a first side portion 50b, a second side portion 50c, and a third side portion 50a, wherein the first side portion 50b and the second side portion 50c are opposite to each other , The two ends of the third side portion 50a are respectively connected to the first side portion 50b and the second side portion 50c; the fixing member 1 is arranged on the fourth side opposite to the third side portion 50a, and the fixing member 1 passes Fasteners (not shown in the figure) are respectively fixedly connected to the first side portion 50b and the second side portion 50c.
  • the fixing member 1, the first side portion 50b, the second side portion 50c, and the third side portion 50a jointly form a frame-shaped structure.
  • the first side portion 50b may be a left side portion
  • the second side portion 50c may be a right side portion
  • the third side portion 50a may be a sky side portion
  • the fourth side may be a ground side.
  • the structure of the backlight module in this embodiment does not include a frame, but the frame-shaped structure formed after the bracket 50 is fixedly connected to the fixing member 1 can function as the frame 5 described above.
  • the exploded view of the display device shown in FIG. 2 also shows a back plate 6 b fixedly connected to the bracket 50 and the fixing member 1.
  • the exploded view of the display device shown in FIG. 2 also shows a front frame 6 fixedly connected to the bracket 50 and the fixing member 1 for fixing the liquid crystal panel.
  • the fixing member 1 includes a first plate portion 11 and a second plate portion 12 located on the back side of the first plate portion 11.
  • the fixing member 1 may further include a connecting portion 13 connecting the first plate portion 11 and the second plate portion 12.
  • the first plate portion 11, the connecting portion 13 and the second plate portion 12 constitute a rail groove 14; the mounting portion 21 of the inserting card 2 is assembled in the rail groove 14 with a gap and is connected to the second plate portion by a fastener. 12 is fixedly connected, and the clamping portion 22 is used for clamping with the circuit board (such as the screen driver board 83 or the main board 9).
  • the inserting card 2 is slidably assembled in the guide groove 14 to facilitate the installation and positioning of the inserting card 2 so as to improve the accuracy of the circuit board and the inserting card 2 for clamping and assembling.
  • the mounting portion 21 of the inserting card 2 can also be directly fixed to the second plate portion 12 by fasteners.
  • the second board portion 12 can be provided with a plurality of screw holes for fixing the inserting card 2 along the length direction of the guide groove 14, so that some screw holes can be selected to install a certain number of inserts according to the specifications and setting positions of the circuit board The clip 2, so that the backlight module can be applied to display devices of various specifications, and the application range is wide.
  • the inserting card 2 includes a first inserting card 2a that is in elastic contact with the first plate portion 11, and is used to connect the screen driving board of the liquid crystal panel 83 is fixed to the back of the first board portion 11; the clamping portion 22 of the first insertion card 2a has a clamping slot 221 for clamping with the screen driving board 83.
  • the first inserting card 2a may further include an inserting guide portion 23 located on the side of the card connecting portion 22 away from the mounting portion 21 and having a guiding inclined surface, so as to facilitate the insertion of the screen driving board 83.
  • the inserting card 2 further includes a second inserting card 2b that is substantially flat with the second board portion 12, and is used to fix the main board 9 of the display device.
  • the clamping portion 22 of the second insertion card 2b includes a pair of hooks 222 arranged oppositely and in opposite clamping directions, and the pair of hooks 222 are used to connect to the main board 9 Card access. That is, the screen driving board 83 of the liquid crystal panel and the main board 9 of the display device are respectively fixed on different planes, and the screen driving board 83 and the main board are connected by a flexible circuit board.
  • the back space of the direct-lit backlight module can be effectively utilized, making the product structure more compact.
  • the screen driver board 83 and the main board 9 are both fixed by inserting, which is convenient to assemble and can significantly improve assembly efficiency.
  • the backlight module is a direct type backlight module
  • the back plate is located on the back side of the reflective sheet
  • the fixing member and the inserting card are located between the reflective sheet and the back plate, so that the screen driving board can be Both the 83 and the main board are fixed between the reflector and the back plate, so that the display device does not need to be additionally provided with a back shell for protecting the circuit board, and the overall appearance is more beautiful.
  • the reflective sheet 31 includes a flat portion 31a and a folded portion 31b located on the periphery of the flat portion 31a and folded toward the light emitting surface of the backlight module.
  • the fixing member 1 and the inserting card 2 are located on the reflective sheet Between the folded portion 31b of 31 and the back plate (the back plate is not shown in the figure), the second plate portion 12 of the fixing member 1 is parallel to the light-emitting surface of the backlight module, and the plane where the first plate portion 11 is located is parallel to the second plate portion 12 of the backlight module.
  • the planes of the plate 12 intersect, so the cross section of the guide groove 14 is wedge-shaped. Note that the light-emitting surface of the backlight module refers to the side of the backlight module away from the backplane.
  • the fixing member 1 can support the reflective sheet 31 and can be in contact with the back plate, and the fixing member 1 and the inserting card 2 are provided between the folded portion 31b of the reflective sheet 31 and the back plate. Therefore, the back space around the reflective sheet 31 can be effectively used, which is more conducive to the slim design of the display device.
  • the second plate portion 12 of the fixing member 1 is connected to the connecting portion 13 in a T shape, and the second plate portion 12 has a first notch for positioning the light bar 40 with an opening facing away from the inserting card 2 121.
  • the first notch 121 of the second plate portion 12 of the fixing member 1 is used to position the light bar 4, which facilitates the assembly of the light bar 4, and has a simple structure, which is beneficial to reducing production costs.
  • the fixing member 1 further includes a bending portion 15 connected to the first plate portion 11 and folded toward the end side of the backlight module.
  • the bending portion 15 can limit the structure of the optical function film layer and the like, and can also support the body of the liquid crystal panel.
  • the bent portion 15 has a second notch 151 for avoiding the flexible circuit connection board 82 of the liquid crystal panel. Designing the second notch 151 in the bending portion 15 can prevent the flexible circuit connecting board 82 from protruding from the surface of the bending portion 15, thereby effectively reducing damage to the flexible circuit connecting board 82 during the assembly process.
  • the specific number of the first plug-in card 2a and the second plug-in card 2b is not limited, and can be determined according to the number and specifications of the circuit board.
  • the fixing part can be made of metal, and the inserting card can be made of a plastic material with good elasticity such as polycarbonate.
  • an embodiment of the present disclosure also provides a display module, including a backlight module 7, a circuit board, and a liquid crystal panel 8 according to any of the foregoing embodiments.
  • the liquid crystal panel 8 is located on the front side of the backlight module 7, and the screen driving board 83 of the liquid crystal panel 8 is folded to the back side and inserted between the fixing member 1 and the inserting card 2, and is fixed by the inserting card 2.
  • the main board or other circuit boards of the display device can also be fixed by additional similar plug-in cards.
  • the assembler When fixing some circuit boards of the display device, the assembler does not need to turn the module over, and can directly insert and fix the circuit board through the inserting card 2, which saves time and effort, and can avoid module damage caused by the overturning operation. Thereby improving the assembly efficiency and assembly yield.
  • the specific product type of the display device is not limited, for example, it can be a TV, a picture screen, a monitor, a tablet computer, a notebook computer, etc.
  • the aforementioned beneficial effects are more prominent.
  • an embodiment of the present disclosure also provides a method for assembling the aforementioned backlight module, which includes the following steps:
  • Step S11 Fix the fixing member to the bracket, where the bracket includes a first side portion 50b, a second side portion 50c, and a third side portion 50a, wherein the first side portion 50b and the second side portion 50c Opposite to each other, both ends of the third side portion 50a are respectively connected to the first side portion 50b and the second side portion 50c; the fixing member 1 is arranged on the fourth side opposite to the third side portion 50a, and the fixing member 1 are respectively fixedly connected to the first side portion 50b and the second side portion 50c by fasteners (not shown in the figure).
  • the fixing member 1, the first side portion 50b, the second side portion 50c, and the third side portion 50a jointly form a frame-shaped structure.
  • the first side portion 50b may be a left side portion
  • the second side portion 50c may be a right side portion
  • the third side portion 50a may be a sky side portion
  • the fourth side may be a ground side.
  • Step S12 Fix the insertion card to the fixing part, and the insertion card is used to fix the circuit board inserted between the fixing part and the insertion card.
  • the plurality of first plug-in clamping members and the plurality of second plug-in clamping members of the foregoing embodiment are fixed to the second plate portion of the fixing member by screws.
  • Step S13 Place the back plate on the back side of the fixing member and the inserting card and fix the back plate with the bracket and the fixing member.
  • the glass back plate, the bracket and the fixing part are bonded and fixed by an adhesive layer.
  • step S13 various optical components can be assembled in sequence on the front side of the back plate.
  • the light bar, reflector, diffuser, optical film, etc. are sequentially assembled on the front side of the glass backplane.
  • an embodiment of the present disclosure also provides a method for assembling a display module, which includes the following steps:
  • the circuit board can be fixed to the fixing member by inserting the card member.
  • the circuit board may include a screen driving board of a liquid crystal panel.
  • the main board or other circuit boards of the display device may also be fixed by a plug-in clip with a similar structure.
  • the assembly process of the display module does not require the module to be turned over, and the circuit board can be inserted and fixed on the back side directly through the insertion card, thereby improving the assembly efficiency and the assembly yield.

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Abstract

一种背光模组（7）、显示模组及其组装方法。背光模组（7）包括：背板（6b）；固定件（1），固定件（1）与背板（6b）固定连接；插装卡件（2），包括安装部（21）和卡接部（22），安装部（21）与固定件（1）固定连接，卡接部（22）用于与插入在固定件（1）与插装卡件（2）之间的电路板（83,9）卡接。

Description

背光模组、显示模组及其组装方法
交叉引用
本公开要求于2019年10月31日提交的中国专利申请第201911056111.3号的优先权，其全部内容通过引用合并于此。
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、显示模组及其组装方法。
背景技术
相关技术液晶显示设备的组装过程中，在完成正面液晶面板本体的组装工序后，还需要将模组翻转以在模组背面固定液晶面板的屏驱动板。该翻转操作不但繁琐、费力，而且易导致液晶面板在翻转过程中损坏。此类问题在例如电视机等大尺寸产品的组装生产中尤为突出。
发明内容
根据本公开实施例的一个方面，提供了一种背光模组，包括：
背板；
固定件，所述固定件与背板固定连接；
插装卡件，包括安装部和卡接部，所述安装部与所述固定件固定连接，所述卡接部用于与插入在所述固定件与所述插装卡件之间的电路板卡接。
在一些实施例中，所述固定件固定连接到背板的背侧。
在一些实施例中，所述背光模组还包括边框或支架，其中，所述固定件固定连接到所述边框或所述支架，所述边框或支架与背板固定连接。
在一些实施例中，所述固定件包括第一板部以及位于所述第一板部背侧的第二板部。
在一些实施例中，所述插装卡件包括第一插装卡件，所述第一插装卡件用于将液晶面板的屏驱动板固定于所述第一板部的背面；所述第一插装卡件的所述卡接部具有用于与所述屏驱动板卡接的卡槽。
在一些实施例中，所述第一插装卡件还包括位于所述卡接部远离所述安装部一侧 且具有导向斜面的插装导向部。
在一些实施例中，所述插装卡件还包括大致与所述第二板部相平的第二插装卡件，所述第二插装卡件用于将显示设备的主板固定于大致与所述第二板部平行的位置；所述第二插装卡件的所述卡接部包括相对设置且卡接方向相对的一对卡钩，所述一对卡钩用于与所述主板卡接。
在一些实施例中，所述固定件还包括连接所述第一板部和所述第二板部的连接部，所述第一板部、所述连接部和所述第二板部构成导轨槽；所述插装卡件的所述安装部间隙装配于所述导轨槽并通过紧固件与所述第二板部固定连接。
在一些实施例中，所述第二板部与所述背光模组的出光面平行，所述第一板部所在平面与所述第二板部所在平面相交，所述导轨槽的横截面呈楔形。
在一些实施例中，背光模组还包括：位于背板前侧的至少一个光学功能膜层；所述至少一个光学功能膜层包括反射片，其中，所述固定件和所述插装卡件位于所述反射片与所述背板之间。
在一些实施例中，所述反射片包括平面部以及位于所述平面部周边并朝向所述背光模组的出光面折起的折起部；所述固定件和所述插装卡件位于所述反射片的折起部与所述背板之间。
在一些实施例中，背光模组还包括：位于所述反射片与所述背板之间的灯条，所述灯条的发光芯片透出所述反射片上开设的孔。
在一些实施例中，所述第二板部与所述连接部呈T字形连接，且所述第二板部具有开口背向所述插装卡件的第一缺口。
在一些实施例中，所述背板为平面背板。
在一些实施例中，在所述固定件固定连接到所述支架的情况下，所述支架包括第一侧边部、第二侧边部、第三侧边部，其中，第一侧边部和第二侧边部彼此相对，第三侧边部的两端分别与第一侧边部和第二侧边部连接；所述固定件设置在与第三侧边部相对的第四侧，并且所述固定件通过紧固件分别与第一侧边部和第二侧边部固定连接。
在一些实施例中，所述固定件还包括与所述第一板部连接且折向所述背光模组端侧的折弯部，所述折弯部具有用于避让液晶面板的柔性电路连接板的第二缺口。
根据本公开实施例的另一个方面，提供了一种显示模组，包括：根据前述任一实施例所述的背光模组；电路板；以及液晶面板。
在一些实施例中，所述电路板插入在所述背光模组中的固定件与插装卡件之间。
在一些实施例中，所述电路板包括以下各项中的至少之一：所述液晶面板的屏驱动板，显示设备的主板。
根据本公开实施例的又一个方面，提供了一种显示模组的组装方法，包括：
在根据前述任一实施例所述的背光模组的前侧组装液晶面板；以及
在不翻转所述背光模组和所述液晶面板的情况下，将电路板插入在所述背光模组中的固定件与插装卡件之间。
在一些实施例中，所述电路板包括以下各项中的至少之一：所述液晶面板的屏驱动板，显示设备的主板。
在一些实施例中，所述背光模组是通过以下步骤来组装的：
将固定件固定于支架，其中，所述支架包括第一侧边部、第二侧边部、第三侧边部，其中，第一侧边部和第二侧边部彼此相对，第三侧边部的两端分别与第一侧边部和第二侧边部连接；所述固定件设置在与第三侧边部相对的第四侧，并且所述固定件通过紧固件分别与第一侧边部和第二侧边部固定连接；
将插装卡件固定于固定件，所述插装卡件用于固定插入固定件与插装卡件之间的电路板；
将背板置于固定件和插装卡件的背侧并将背板与支架和固定件固定。
采用本公开前述实施例技术方案，可以提高显示设备生产过程中的组装效率和组装良品率。
通过以下参照附图对本公开的实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1a为本公开一些实施例显示模组的背光模组的截面示意图；
图1b为本公开另一些实施例显示模组的背光模组的截面示意图；
图2为本公开一些实施例显示模组的爆炸示意图；
图3为本公开一些实施例中固定件、插装卡件和电路板装配示意图；
图4a为图3中A处放大示意图；
图4b为图3中的第一插装卡件示意图；
图5a为图3中B处放大示意图；
图5b为图3中的第二插装卡件示意图。
图6为本公开一些实施例背光模组的组装方法流程图。
图7为本公开一些实施例显示模组的组装方法流程图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种实施例。对实施例的描述仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置应被解释为仅仅是示意性的，而不是作为限制。
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部分。“包括”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。
在本公开中，当描述到特定元件位于第一元件和第二元件之间时，在该特定元件与第一元件或第二元件之间可以存在居间元件，也可以不存在居间元件。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
本公开实施例提供一种背光模组、显示模组及其组装方法，以提高显示设备生产过程中的组装效率和组装良品率。
在本公开实施例中，部件(或组件)的“背侧”指显示设备处于常规的使用状态时，部件远离观看者的一侧，相应的，部件的“前侧”则指该部件靠近观看者的一侧。对于在使用状态屏幕与水平面垂直或呈一定倾角的显示设备，如电视机或者画屏等，部件(或组件)的“地侧”指其更加靠近地面的一侧，“天侧”则指其与地侧相对的更加远离地面的一侧，“左侧”指其更加靠近观看者左手边的一侧，“右侧”则指其更加靠近观看者右手边的一侧。需要说明的是，上述“地侧”、“天侧”、“左侧”、“右侧”仅是在显示设备保持在一种使用状态下的位置信息，对于有多种使用状态的显示设备，例如横屏和竖屏两用的显示设备，在使用状态发生变化时，例如横屏状态转化为竖屏状态，各部件的位置也会相应的发生变化。
如图1a所示，本公开一些实施例提供了一种背光模组7，包括：
背板6b；
固定件1，所述固定件1与背板6b固定连接；
插装卡件2，包括安装部21和卡接部22，安装部21与固定件1固定连接，卡接部22用于与插入固定件1与插装卡件2之间的电路板(如图中所示的液晶面板8的屏驱动板83)卡接。
背光模组7还包括位于背板6b前侧的至少一个光学功能膜层3。
显示设备的液晶面板8包括本体81、至少一个屏驱动板83以及连接本体81和屏驱动板83的柔性电路连接板82。本体81为液晶盒结构，用于进行画面显示；屏驱动板83也称逻辑板，用于向本体81输出驱动信号，例如适合于本体81的数据和栅极驱动IC的数据信号、控制信号、时钟信号等；柔性电路连接板82呈柔性可弯折，用于在屏驱动板83与本体81之间传输信号。
背光模组7的具体类型不限，例如可以为图1a所示的直下式背光模组或如图1b所示的侧入式背光模组。
如图1a所示，在一些实施例中，背光模组7为直下式背光模组，作为光源的灯条4设置在至少一个光学功能膜层3的背侧。该至少一个光学功能膜层3分别为从后向前依次设置的反射片31、扩散板32和至少一个光学膜片33。其中，灯条4的发光芯片40(如发光二极管)穿过反射片31上开设的孔。反射片31与扩散板32间隔设置。
如图1b所示，在另一些实施例中，背光模组7为侧入式背光模组，至少一个光学功能膜层3分别为从后向前依次设置的反射片31、导光板34和至少一个光学膜片 33，作为光源的灯条4设置在导光板34的端侧，灯条4的发光芯片朝向导光板34的端面。
在本公开图1a和图1b所示的实施例中，背光模组7包括背板(如图1a中的背板6b和图1b中的背板6a)和边框5。背板和边框5固定连接，对容纳于其内的光学部件起到支撑及限位的作用。当液晶面板8与背光模组7组装后，边框5还对液晶面板8起到支撑和限位的作用。在本公开这些实施例中，边框5可以采用金属或者塑料等材质。
在本公开一些侧入式背光模组或直下式背光模组的实施例中，固定件和插装卡件位于背板的背侧。例如，如图1b所示，固定件1固定于背板6a，此外，固定件也可以通过延伸出的折弯部固定于边框。包含此类背光模组7的显示设备，还需要设置一后壳(图1b中未予示出)来遮挡电路板等部件。
在本公开一些直下式背光模组的实施例中，如图1a所示，固定件1和插装卡件2位于反射片31和背板6b之间，固定件1通过延伸出的折弯部固定于边框5，此时，背光模组7的背板6b可以同时作为显示设备的后壳。背板6b可以为平面背板，例如可以为透明、不透明，或者具有一定装饰效果的玻璃背板。包含此类背光模组7的显示设备，不必另外设置后壳，不但成本更低，而且外观更加纤薄，更具美观性，壁挂后可以做到完美贴墙，背面也不易积灰。
在本公开实施例中，电路板可以为如图1a和图1b中所示的液晶面板8的屏驱动板83，此外，电路板也可以为显示设备的主板等。以显示设备为电视机为例，电视机主板的功能可以包括：处理按键信号，响应遥控器信号，直接或间接控制背光，接收各类视频信号，图像转化成低电压差分信号并输送给液晶面板的屏驱动板，声音信号输出到喇叭等。
在本公开实施例中，可以根据电路板所需的固定位置来设计固定件1和插装卡件2的安装位置，以便于电路板从背光模组的边缘插入固定件1与插装卡件2之间。以显示设备为液晶电视机为例，固定件1和插装卡件2可以设置在靠近背光模组7的地侧边缘的位置，从而便于电路板从地侧插入。
相关技术液晶显示设备的组装过程中，在完成正面液晶面板本体的组装工序后，还需要将模组翻转以在模组背面使用螺钉固定液晶面板的屏驱动板，该翻转操作不但繁琐、费力，而且易导致液晶面板在翻转过程中损坏。此外，相关技术液晶显示设备的主板也是使用螺钉固定在模组的背面，也存在类似的技术问题。
采用本公开实施例设计，在显示设备的组装过程中，组装人员在固定液晶面板的屏驱动板或显示设备的主板等电路板时，可以不必将模组翻转，直接通过插装卡件将电路板插装固定即可，不但省时省力，而且可以避免因翻转操作造成的模组损伤，从而提高了组装效率和组装良品率。
例如，在将液晶面板8的本体81组装在背光模组7的前侧后，无需将模组翻转，直接将液晶面板8的屏驱动板83折向背侧插入固定件1与插装卡件2之间，通过插装卡件2固定即可。与相关技术相比，不但简化了组装操作工序，提高了组装效率，而且避免了因模组翻转操作造成的液晶面板损伤，从而提高了组装良品率。
在本公开图1a和图1b所示的实施例中，背光模组7包括了边框5。如图1a所示，固定件1可以通过延伸出的折弯部固定于边框5。如图1b所示，该实施例中，固定件1则是固定于背板6a的背面。
如图2和图3所示，为另一种采用直下式背光模组的显示设备的结构。该背光模组包括支架50，该支架50包括第一侧边部50b、第二侧边部50c和第三侧边部50a，其中，第一侧边部50b和第二侧边部50c彼此相对，第三侧边部50a的两端分别与第一侧边部50b和第二侧边部50c连接；固定件1设置在与第三侧边部50a相对的第四侧，并且固定件1通过紧固件(图中未示出)分别与第一侧边部50b和第二侧边部50c固定连接。由此可见，固定件1、第一侧边部50b、第二侧边部50c和第三侧边部50a共同形成了框形结构。例如，第一侧边部50b可以为左侧边部，第二侧边部50c可以为右侧边部，第三侧边部50a为天侧边部，而第四侧可以为地侧。该实施例背光模组的结构中不包括边框，但是，支架50与固定件1固定连接后所形成的框形结构可以起到前述边框5的作用。另外，图2所示的显示设备爆炸图中还示出了与支架50和固定件1固定连接的背板6b。此外，图2所示的显示设备爆炸图中还示出了与支架50和固定件1固定连接的用以固定液晶面板的前框6。
如图4a、图4b、图5a和图5b所示，在本公开的一些实施例中，固定件1包括第一板部11以及位于第一板部11背侧的第二板部12。此外，固定件1还可以包括连接第一板部11和第二板部12的连接部13。该实施例中，第一板部11、连接部13和第二板部12构成导轨槽14；插装卡件2的安装部21间隙装配于导轨槽14并通过紧固件与第二板部12固定连接，卡接部22用于与电路板(如屏驱动板83或主板9)卡接。
插装卡件2滑动装配在导轨槽14内，便于插装卡件2的安装定位，从而可以提 高电路板与插装卡件2卡接装配的精度。此外，插装卡件2的安装部21也可以直接通过紧固件固定于第二板部12。
第二板部12可以沿导轨槽14的长度方向开设多个用于固定插装卡件2的螺钉孔，这样可以根据电路板的规格尺寸以及设置位置选择一些螺钉孔来安装一定数量的插装卡件2，从而使背光模组可以适用多种规格的显示设备，适用范围较广。
如图4a和图4b所示，在本公开的一些实施例中，插装卡件2包括与第一板部11弹性接触的第一插装卡件2a，用于将液晶面板的屏驱动板83固定于第一板部11的背面；第一插装卡件2a的卡接部22具有用于与屏驱动板83卡接的卡槽221。此外，第一插装卡件2a还可以包括位于卡接部22远离安装部21一侧且具有导向斜面的插装导向部23，以便于屏驱动板83插入。
此外，如图5a和图5b所示，该实施例中，插装卡件2还包括大致与第二板部12相平的第二插装卡件2b，用于将显示设备的主板9固定于大致与第二板部12平行的位置；第二插装卡件2b的卡接部22包括相对设置且卡接方向相对的一对卡钩222，该一对卡钩222用于与主板9卡接。即：液晶面板的屏驱动板83和显示设备的主板9分别固定在不同平面，屏驱动板83和主板之间通过柔性线路板连接。
需要说明的是，在本公开中，“大致”一词是相对“绝对理想”的情况而言的，由于需要考虑加工、装配误差以及形状细节，因此，“大致”可以理解为在一定误差范围内。
采用该实施例方案设计，可以有效利用直下式背光模组的背部空间，使得产品结构更加紧凑，屏驱动板83和主板9均采用插装方式固定，组装便捷，可显著提高组装效率。
在本公开的一个实施例中，背光模组为直下式背光模组，背板位于反射片的背侧，固定件和插装卡件位于反射片与背板之间，这样可以将屏驱动板83和主板均固定在反射片和背板之间，因此使得显示设备不需要再额外设置一个用于保护电路板的后壳，整体更加的美观。如图3和图4a所示，反射片31包括平面部31a以及位于平面部31a周边并朝向背光模组的出光面折起的折起部31b，固定件1和插装卡件2位于反射片31的折起部31b与背板之间(背板在图中未示出)，固定件1的第二板部12与背光模组的出光面平行，第一板部11所在平面与第二板部12所在平面相交，因此，导轨槽14的横截面呈楔形。注意，背光模组的出光面是指背光模组远离背板的一面。在该实施例中，固定件1可以起到支撑反射片31的作用，可以与背板相接触，固定件1 和插装卡件2设于反射片31的折起部31b与背板之间，可以有效利用反射片31周边的背侧空间，从而更有利于显示设备的纤薄设计。
如图4a所示，固定件1的第二板部12与连接部13呈T字形连接，且第二板部12具有开口背向插装卡件2的用于定位灯条40的第一缺口121。利用固定件1的第二板部12的第一缺口121对灯条4进行定位，便于灯条4的组装，且结构简单，有利于降低生产成本。
如图4a所示，该固定件1还包括与第一板部11连接且折向背光模组端侧的折弯部15。当固定件1与前述支架固定连接后，折弯部15可以对光学功能膜层等结构起到限位作用，还能对液晶面板的本体起到支撑作用。另外，折弯部15具有用于避让液晶面板的柔性电路连接板82的第二缺口151。在折弯部15设计第二缺口151可以避免柔性电路连接板82突出于折弯部15表面，从而可以有效减少组装过程中对柔性电路连接板82造成的损伤。
在本公开实施例中，第一插装卡件2a和第二插装卡件2b的具体数量不限，可以根据电路板的数量和规格尺寸来确定。固定件可以采用金属材质，插装卡件可以采用聚碳酸酯等弹性较好的塑料材质。
请参照图1a和图1b所示，本公开实施例还提供了一种显示模组，包括根据前述任一实施例的背光模组7、电路板和液晶面板8。例如，液晶面板8位于背光模组7前侧，液晶面板8的屏驱动板83折向背侧并插入固定件1与插装卡件2之间，通过插装卡件2固定。此外，显示设备的主板或其它电路板也可以通过另外设置的类似插装卡件固定。
组装人员在固定显示设备的一些电路板时，无需将模组翻转，直接通过插装卡件2将电路板插装固定即可，省时省力，而且可以避免因翻转操作造成的模组损伤，从而提高了组装效率和组装良品率。
显示设备的具体产品类型不限，例如可以为电视机、画屏、显示器、平板电脑和笔记本电脑等。对于电视机等大屏显示设备，前述的有益效果更加突出。
如图6所示，本公开实施例还提供了前述背光模组的组装方法，包括以下步骤：
步骤S11:将固定件固定于支架，其中，支架包括第一侧边部50b、第二侧边部50c和第三侧边部50a，其中，第一侧边部50b和第二侧边部50c彼此相对，第三侧边部50a的两端分别与第一侧边部50b和第二侧边部50c连接；固定件1设置在与第三侧 边部50a相对的第四侧，并且固定件1通过紧固件(图中未示出)分别与第一侧边部50b和第二侧边部50c固定连接。由此可见，固定件1、第一侧边部50b、第二侧边部50c和第三侧边部50a共同形成了框形结构。例如，第一侧边部50b可以为左侧边部，第二侧边部50c可以为右侧边部，第三侧边部50a为天侧边部，而第四侧可以为地侧。。
步骤S12:将插装卡件固定于固定件，该插装卡件用于固定插入固定件与插装卡件之间的电路板。例如，将前述实施例的多个第一插装卡件和多个第二插装卡件通过螺钉固定于固定件的第二板部。
步骤S13:将背板置于固定件和插装卡件的背侧并将背板与支架和固定件固定。例如，将玻璃背板与支架和固定件通过胶层粘接固定。
在完成步骤S13之后，可以在背板的前侧依次组装各个光学部件。例如，在玻璃背板的前侧依次组装灯条、反射片、扩散板、光学膜片等。
如图7所示，本公开实施例还提供了一种显示模组的组装方法，包括以下步骤：
S21：在前述实施例背光模组的前侧组装液晶面板。
S22：在不翻转背光模组和液晶面板的前提下，将电路板插入在背光模组的固定件与插装卡件之间。
因此，可以通过插装卡件将电路板固定于固定件。
根据本公开的一些实施例，电路板可以包括液晶面板的屏驱动板。
根据本公开的一些实施例，显示设备的主板或其它电路板也可以通过类似结构的插装卡件固定。
可见，显示模组的组装过程无需将模组翻转，直接通过插装卡件将电路板插装固定在背侧即可，从而提高了组装效率和组装良品率。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改。本公开的范围由所附权利要求来限定。

Claims (20)

  1. 一种背光模组，包括：
    背板；
    固定件，所述固定件与背板固定连接；
    插装卡件，包括安装部和卡接部，所述安装部与所述固定件固定连接，所述卡接部用于与插入在所述固定件与所述插装卡件之间的电路板卡接。
  2. 根据权利要求1所述的背光模组，其中：所述固定件固定连接到背板的背侧。
  3. 根据权利要求1所述的背光模组，其中：所述背光模组还包括边框或支架，其中，所述固定件固定连接到所述边框或所述支架，所述边框或支架与背板固定连接。
  4. 根据权利要求1所述的背光模组，其中：所述固定件包括第一板部以及位于所述第一板部背侧的第二板部。
  5. 根据权利要求4所述的背光模组，其中：
    所述插装卡件包括第一插装卡件，所述第一插装卡件用于将液晶面板的屏驱动板固定于所述第一板部的背面；
    所述第一插装卡件的所述卡接部具有用于与所述屏驱动板卡接的卡槽。
  6. 根据权利要求5所述的背光模组，其中：所述第一插装卡件还包括位于所述卡接部远离所述安装部一侧且具有导向斜面的插装导向部。
  7. 根据权利要求5所述的背光模组，其中：
    所述插装卡件还包括大致与所述第二板部相平的第二插装卡件，所述第二插装卡件用于将显示设备的主板固定于大致与所述第二板部平行的位置；所述第二插装卡件的所述卡接部包括相对设置且卡接方向相对的一对卡钩，所述一对卡钩用于与所述主板卡接。
  8. 根据权利要求4所述的背光模组，其中：所述固定件还包括连接所述第一板部和所述第二板部的连接部，所述第一板部、所述连接部和所述第二板部构成导轨槽；
    所述插装卡件的所述安装部间隙装配于所述导轨槽并通过紧固件与所述第二板部固定连接。
  9. 根据权利要求8所述的背光模组，其中：
    所述第二板部与所述背光模组的出光面平行，所述第一板部所在平面与所述第二板部所在平面相交，所述导轨槽的横截面呈楔形。
  10. 根据权利要求1所述的背光模组，还包括：位于所述背板前侧的至少一个光学功能膜层；
    所述至少一个光学功能膜层包括反射片，其中，所述固定件和所述插装卡件位于所述反射片与所述背板之间。
  11. 根据权利要求10所述的背光模组，其中：所述反射片包括平面部以及位于所述平面部周边并朝向所述背光模组的出光面折起的折起部；
    所述固定件和所述插装卡件位于所述反射片的折起部与所述背板之间。
  12. 根据权利要求10所述的背光模组，还包括：位于所述反射片与所述背板之间的灯条，所述灯条的发光芯片透出所述反射片上开设的孔。
  13. 根据权利要求8所述的背光模组，其中，所述第二板部与所述连接部呈T字形连接，且所述第二板部具有开口背向所述插装卡件的第一缺口。
  14. 根据权利要求3所述的背光模组，其中，在所述固定件固定连接到所述支架的情况下，所述支架包括第一侧边部、第二侧边部、第三侧边部，其中，第一侧边部和第二侧边部彼此相对，第三侧边部的两端分别与第一侧边部和第二侧边部连接；所述固定件设置在与第三侧边部相对的第四侧，并且所述固定件通过紧固件分别与第一侧边部和第二侧边部固定连接。
  15. 根据权利要求14所述的背光模组，其中：
    所述固定件还包括与所述第一板部连接且折向所述背光模组端侧的折弯部，所述折弯部具有用于避让液晶面板的柔性电路连接板的第二缺口。
  16. 一种显示模组，包括：
    根据权利要求1-15任一项所述的背光模组；
    电路板；以及
    液晶面板。
  17. 根据权利要求16所述的显示模组，其中，所述电路板插入在所述背光模组中的固定件与插装卡件之间。
  18. 根据权利要求16所述的显示模组，其中，所述电路板包括以下各项中的至少之一：所述液晶面板的屏驱动板，显示设备的主板。
  19. 一种显示模组的组装方法，包括：
    在根据权利要求1-15任一项所述的背光模组的前侧组装液晶面板；以及
    在不翻转所述背光模组和所述液晶面板的情况下，将电路板插入在所述背光模组中的固定件与插装卡件之间。
  20. 根据权利要求19所述的组装方法，其中，所述电路板包括以下各项中的至少之一：所述液晶面板的屏驱动板，显示设备的主板。
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