WO2013071545A1 - 背框、背框的制造方法以及背光系统 - Google Patents

背框、背框的制造方法以及背光系统 Download PDF

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Publication number
WO2013071545A1
WO2013071545A1 PCT/CN2011/082668 CN2011082668W WO2013071545A1 WO 2013071545 A1 WO2013071545 A1 WO 2013071545A1 CN 2011082668 W CN2011082668 W CN 2011082668W WO 2013071545 A1 WO2013071545 A1 WO 2013071545A1
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WO
WIPO (PCT)
Prior art keywords
assembling piece
primary
splicing
primary assembling
back frame
Prior art date
Application number
PCT/CN2011/082668
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English (en)
French (fr)
Inventor
郭仪正
萧宇均
程加河
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/380,033 priority Critical patent/US8794813B2/en
Publication of WO2013071545A1 publication Critical patent/WO2013071545A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • 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
    • G02F1/133308—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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133628—Illuminating devices with cooling means

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a back frame of a flat panel display device, a method of manufacturing the back frame, and a backlight system.
  • the liquid crystal display device of the prior art includes a front frame, a panel, and a backlight module.
  • the backlight module includes a back frame, a reflective sheet, a light guide plate, a light group, and the like.
  • the size of the liquid crystal panel includes 31.5, 42, 46, 48 or 55. Inch, you need to set different back frame molds according to different size LCD panels.
  • FIG. 1 is a schematic structural diagram of a back frame of a liquid crystal display device in the prior art.
  • the back frame 10 in the prior art The monolithic back frame is usually used to produce the integral back frame 10 by metal stamping or plastic injection.
  • the integral back frame 10 requires excessive material consumption and high material cost.
  • the large size of the back frame 10 Larger punching equipment is required, and the corresponding mold of the back frame 10 is large in size, complicated in structure, and high in cost of the back frame mold. Therefore, the back frame of the prior art is costly.
  • the backlight module often uses aluminum or galvanized steel as a raw material, and is stamped into a monolithic back sheet.
  • aluminum has a better heat dissipation effect, which is beneficial to improve the life of the product; the heat dissipation effect of the galvanized steel plate is relatively poor, and the price is relatively cheaper.
  • the cost of the backboard the cost of raw materials accounts for the largest proportion. If the backsheet is entirely made of aluminum, the cost is too high and the structural strength is poor. All the galvanized steel sheets are used, which is not good in heat dissipation and reduces product performance. Therefore, how to ensure product quality and save material cost in order to reduce the overall product cost has become an important problem to be solved in the prior art.
  • the technical problem to be solved by the present invention is to provide a back frame, a manufacturing method of the back frame, and a backlight system, which can reduce material cost and mold cost.
  • a technical solution adopted by the present invention is to provide a back frame of a flat panel display device, which includes at least two primary assembling pieces, and at least two primary assembling pieces are spliced to form a main frame of the back frame; at least two
  • the main assembling piece includes a primary assembling piece for setting a heat source, and the primary assembling piece for setting the heat source has a first heat conducting capability, and the remaining one of the at least two main assembling pieces is not used for setting the heat source.
  • the piece has a second thermal conductivity; the first thermal conductivity is greater than the second thermal conductivity.
  • the primary assembling piece for setting the heat source has a first strength, and the remaining one or more of the at least two primary assembling pieces not used for setting the heat source has a second intensity, the second intensity Greater than the first intensity.
  • the primary splice member having the first thermal conductivity and the first strength is an aluminum member
  • the primary splice member having the second thermal conductivity and the second strength is a galvanized steel member
  • the primary assembling member for arranging the heat generating source comprises a laminated first layer and a second layer, the first layer being disposed adjacent to the heat source, and the first layer has a higher thermal conductivity than the second layer.
  • the at least two primary assembling pieces comprise a first primary assembling piece and a second primary assembling piece which are mutually spliced, wherein one end surface of the first primary assembling piece is provided with at least two along the first primary assembling piece.
  • the joints are arranged at intervals in the longitudinal direction, and the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece through a joint portion thereof to form a main frame of the back frame of different sizes.
  • the joint portion is a recess provided on a surface of the first primary assembling piece and adapted to an end of the second primary assembling piece to receive one end of the second primary assembling piece.
  • the joint portion is a concave portion provided on the surface of the first primary assembling piece, and the end surface of the second primary assembling piece is provided with protrusions arranged at intervals along the length direction of the second primary assembling piece, and convex. Embedding a recess to splicing the first primary splicing piece and the second primary splicing piece.
  • the bottom of the concave portion of the first primary assembling piece is provided with a first through hole
  • the corresponding position of the second primary assembling piece is provided with a second through hole
  • the back frame includes a fixing member
  • the fixing member passes through the first The through hole and the second through hole are used to splicing the first primary assembling piece and the second primary assembling piece.
  • the back frame includes a third primary assembling piece and a fourth primary assembling piece; the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, and the fourth primary assembling piece are all straight bars Shaped and stitched end to end to surround the rectangular main frame forming the back frame.
  • the back frame includes a secondary splicing piece disposed in the main frame, and the auxiliary splicing piece is spliced with the main frame.
  • the auxiliary assembling piece includes a first auxiliary assembling piece and a second auxiliary assembling piece, and two ends of the first auxiliary assembling piece are respectively combined with the first primary assembling piece, the second primary assembling piece, and the third primary assembling piece.
  • splicing at least two splicing members in the fourth main splicing piece, the two ends of the second auxiliary splicing piece are respectively in the first main splicing piece, the second main splicing piece, the third main splicing piece and the fourth main splicing piece At least two primary splices are spliced.
  • the two ends of the first auxiliary assembling piece are respectively spliced with the first primary assembling piece and the second primary assembling piece disposed adjacently, and the two ends of the second auxiliary assembling piece are adjacent to the third set adjacent to each other.
  • the main splicing piece and the fourth main splicing piece are spliced; or the two ends of the first auxiliary splicing piece are respectively spliced with the first main splicing piece and the third main splicing piece, and the two ends of the second auxiliary splicing piece are oppositely disposed
  • the first primary assembling piece and the third primary assembling piece are spliced.
  • the back frame includes at least one bracket detachably fixed to the first primary assembling piece, the second primary assembling piece, the third primary assembling piece, the fourth primary assembling piece, the first auxiliary assembling piece, and the first One or more of the two auxiliary splicing pieces, the bracket is provided with a convex hull.
  • the spliced splicing members are screwed, snapped or welded.
  • a technical solution adopted by the present invention is to provide a method for manufacturing a back frame of a flat panel display device, comprising: fabricating at least two primary assembling pieces, and at least two primary assembling pieces are included for setting The main splicing piece of the heat source, the main splicing piece for setting the heat source has the first heat conduction capability, and the other one of the at least two main splicing pieces not used for setting the heat source has the second heat conduction capability, the first The thermal conductivity is greater than the second thermal conductivity; the at least two primary splices are spliced.
  • the step of fabricating at least two primary splicing members includes: fabricating at least first and second primary splicing members, wherein one end of the first primary splicing member is provided with at least two splicing portions, each The structure of the splicing portion is adapted to the end of the corresponding second primary splicing member; the step of splicing the at least two primary splicing members includes: selecting a splicing portion of the at least two splicing portions according to the size of the back frame and corresponding One end of the two primary assembling pieces is spliced.
  • one of the at least two stitching portions is selected according to the size of the back frame.
  • the other splicing portions of the first primary splicing member located outside the splicing position of the second primary splicing member are cut off.
  • a technical solution adopted by the present invention is to provide a backlight system including a light source, a light homogenizing mechanism, and a back frame; the back frame carries a light source and a light homogenizing mechanism, and the back frame is the above-mentioned back frame.
  • the beneficial effects of the present invention are: different from the prior art, the back frame of the present invention, the manufacturing method of the back frame, and the backlight system are provided with a minimum of two primary assembling pieces, wherein the primary assembling piece provided with the heat source has a thermal conductivity greater than
  • the remaining one or more primary splicing members are not used for setting the heat source, and accordingly, different materials are selected to reduce the material cost while ensuring the heat dissipation requirement; in addition, at least two splicing portions are provided on the first main splicing member, A primary assembling piece is spliced with one end of the corresponding second primary assembling piece through a joint portion thereof, so that the mold structure of the back frame is simple, the cost of the back frame mold is reduced, and the material of the back frame is saved, thereby reducing the flat display device. Cost of production.
  • FIG. 1 is a schematic structural view of a back frame of a liquid crystal display device in the prior art
  • FIG. 2 is a schematic structural view of a flat panel display device according to a first embodiment of the present invention
  • FIG. 3 is a schematic structural view of a back frame of a flat panel display device according to a second embodiment of the present invention.
  • FIG. 4 is a schematic structural view of a back frame of a flat panel display device according to a third embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a back frame of a flat panel display device according to a fourth embodiment of the present invention.
  • FIG. 6 is a schematic structural view of a splicing manner in a flat panel display device according to a fifth embodiment of the present invention.
  • FIG. 7 is a schematic view showing a diagonal arrangement of a first auxiliary assembling piece on a main frame in a flat panel display device according to a sixth embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a first auxiliary assembling piece and a second auxiliary assembling piece on a main frame in a flat panel display device according to a seventh embodiment of the present invention.
  • FIG. 9 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to an eighth embodiment of the present invention.
  • Figure 10 is a schematic cross-sectional view showing the first embodiment of the joint portion of Figure 9;
  • FIG. 11 is a schematic view showing a splicing manner of a splicing portion of a back frame of a flat panel display device according to a ninth embodiment of the present invention.
  • FIG. 12 is a schematic view showing a splicing manner of a splicing portion of a back frame of a flat panel display device according to a tenth embodiment of the present invention.
  • FIG. 13 is a schematic view showing a splicing manner of a splicing portion of a back frame of a flat panel display device according to an eleventh embodiment of the present invention.
  • FIG. 14 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to a twelfth embodiment of the present invention.
  • FIG. 15 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to a thirteenth embodiment of the present invention.
  • FIG. 16 is a schematic structural view of a back frame of a flat panel display device according to a fourteenth embodiment of the present invention.
  • Figure 17 is a block diagram showing the structure of a flat panel display device according to a fifteenth embodiment of the present invention.
  • FIG. 18 is a flow chart showing a method of manufacturing a back frame of a flat panel display device according to a sixteenth embodiment of the present invention.
  • FIG. 19 is a schematic structural view of a flat panel display device with a touch screen according to a seventeenth embodiment of the present invention.
  • FIG. 20 is a schematic structural view of a stereoscopic display device according to an eighteenth embodiment of the present invention.
  • Figure 21 is a block diagram showing the structure of a plasma display device in accordance with a nineteenth embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a flat panel display device according to a first embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a first embodiment of a back frame of a flat panel display device according to a second embodiment of the present invention.
  • the flat panel display device 20 of the present embodiment includes a backlight system 21 and a display panel 22 .
  • the backlight system 21 is disposed on the back surface of the display panel 22 and provides a light source for the display panel 22 .
  • the backlight system 21 includes a light source 25, a light homogenizing mechanism 24, and a back frame 23.
  • the back frame 23 carries the light source 25 and the light homogenizing mechanism 24.
  • the light homogenizing mechanism 24 is a light guide plate; when the backlight system 21 is of a direct type, the light homogenizing mechanism 24 is a diffusing plate.
  • the back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form the main frame 27 of the back frame 23.
  • the first embodiment of the back frame 23 includes a first primary splice 261 and a second primary splice 262.
  • One end of the first primary assembling piece 261 is spliced with one end of the second primary assembling piece 262, and the other end of the first primary assembling piece 261 is spliced with the other end of the second primary assembling piece 262 to form the main frame 27 of the back frame 23.
  • the first primary splicing member 261 and the second primary splicing member 262 are both aluminum or galvanized steel.
  • the first primary assembling piece 261 and the second primary assembling piece 262 are L-shaped.
  • the second embodiment of the back frame 23 includes a first primary splicing member 281, a second primary splicing member 282, and a third primary splicing member 283.
  • the three primary assembling pieces 281, 282, and 283 are joined to form the main frame 27 of the back frame 23.
  • the three primary splices 281, 282, and 283 are either aluminum or galvanized steel.
  • the first primary assembling piece 281 is L-shaped, and the second and third assembling pieces 282, 283 are all straight.
  • the back frame 23 may further include a secondary splicing piece disposed in the splicing frame 27 and spliced thereto.
  • the back frame 23 of the flat panel display device 20 of the present invention will be described in detail below with four primary splicing members and two secondary splicing members.
  • FIG. 5 is a schematic structural diagram of a back frame of a flat panel display device according to a fourth embodiment of the present invention.
  • the back frame 23 includes: a first primary assembling piece 231, a second primary assembling piece 232, a third primary assembling piece 233, a fourth primary assembling piece 234, and a first auxiliary assembling piece 235.
  • the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are formed by the end-to-end stitching to form the main frame 27 of the back frame 23.
  • the first auxiliary splicing piece 235 and the second auxiliary splicing piece 236 are provided as auxiliary splicing pieces, are disposed in the main frame 27, and are spliced with the main frame 27.
  • first primary assembling piece 231 is spliced with one end of the second primary assembling piece 232, and the other end of the second primary assembling piece 232 is spliced with one end of the third primary assembling piece 233, and the third primary assembling piece 233 is The other end is spliced with one end of the fourth primary assembling piece 234, and the other end of the fourth primary assembling piece 234 is spliced with the other end of the first primary assembling piece 231 to form a rectangular main frame 27.
  • the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233 and the fourth primary assembling piece 234 are all aluminum parts or galvanized steel pieces.
  • the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are all straight strips.
  • the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 may all be disposed in an L shape, or partially disposed in a straight strip shape, and the remaining ones are disposed in an L shape.
  • the first primary assembling piece 261 and the second primary assembling piece 262 are all disposed in an L shape; in FIG. 4, the first primary assembling piece 281 is disposed in an L shape, and the second and third primary assembling pieces 282 are provided.
  • And 283 is set to a straight strip.
  • the back frame 23 of the flat panel display device 20 is spliced and fixed by using a splicing connection.
  • one end of the first primary assembling piece 231 and one end of the second primary assembling piece 232 are spliced and connected, and one end of the second primary assembling piece 232 is spliced on one end of the first primary assembling piece 231 .
  • one end of the second primary assembling piece 232 is spliced on one end of the first primary assembling piece 231 by means of screwing, fastening or welding.
  • the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236 are disposed in the main frame 27 of the back frame 23 .
  • One end of the first auxiliary assembling piece 235 is spliced with the first primary assembling piece 231
  • the other end of the first auxiliary assembling piece 235 is spliced with the third primary assembling piece 233
  • the other end of the second auxiliary assembling piece 236 is spliced with the third primary assembling piece 233, and between the second primary assembling piece 232, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236.
  • one of ordinary skill in the art provides at least one secondary splice within the main frame 27, such as only the first secondary splice 235 disposed within the main frame 27.
  • the two ends of the first auxiliary assembling piece 235 can be respectively spliced with at least two primary assembling pieces of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234.
  • the first sub-assembler 235 is diagonally disposed in the main frame 27 as shown in FIG.
  • the two ends of the second auxiliary assembling piece 236 may be respectively combined with at least two of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234.
  • Splicing pieces are spliced.
  • the two ends of the first auxiliary assembling piece 235 are respectively spliced with the adjacent first primary assembling piece 231 and the second primary assembling piece 232, and the two ends of the second auxiliary assembling piece 236 are respectively disposed adjacent to the third main assembly.
  • the splicing member 233 and the fourth main splicing member 234 are spliced, as shown in FIG.
  • the back frame 23 includes seven brackets 2371, 2372, 2373, 2374, 2375, 2376, and 2377.
  • the bracket 2371 is fixed on the fourth primary assembling piece 234, the brackets 2372 and 2373 are respectively fixed on the first auxiliary assembling piece 235, the bracket 2374 is fixed on the second auxiliary assembling piece 236, and the bracket 2375 is fixed on the second primary assembling piece.
  • the two ends of the brackets 2376 and 2377 are respectively fixed to the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236.
  • the bracket may be fixed to one of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236. or above.
  • those skilled in the art can fully provide other numbers of brackets, such as a bracket or more, on the back frame 23.
  • the bracket can be detachably fixed to one of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236. or above.
  • a convex package (not shown) is disposed on the brackets 2371, 2372, 2373, 2374, 2375, 2376, and 2377, and the back frame 23 can fix the circuit board or the like through the convex package.
  • the first primary assembling piece 231 and the third primary assembling piece 233 are the same in size, the same shape, and are stamped using the same mold.
  • the second primary assembling piece 232, the fourth primary assembling piece 234, the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236 have the same size and the same shape, and are stamped and produced by the same die to realize mold sharing. Therefore, the back frame 23 of the present invention can be produced by stamping using two small-sized molds.
  • the back frame 10 requires a large-sized mold, and the mold structure of the back frame 23 of the present invention is simple and small, thereby reducing The cost of the back frame 23 mold.
  • the back frame 23 of the present invention can greatly save material compared to the overall back frame of the back frame 10 in the prior art, thereby reducing the production cost of the flat panel display device 20.
  • FIG. 9 is a schematic structural diagram of a joint portion of a back frame of a flat panel display device according to an eighth embodiment of the present invention.
  • one end of the first primary assembling piece is provided with two splicing portions, and the structure of the splicing portion is matched with one end of the corresponding second main splicing portion, so that the first primary assembling piece is Stitching with one end of the corresponding second primary assembling piece.
  • first primary assembling piece 231 is provided with the splicing portions 2311, 2312, and the splicing portions 2311, 2312 are arranged along the length direction of the first primary assembling piece 231, and the splicing portions 2311, 2312 are in the first main splicing.
  • the piece 231 is provided with a recess shaped to fit one end of the second primary assembling piece 232 to receive one end of the second primary assembling piece 232.
  • the splicing portions 2311, 2312 are recesses that do not penetrate the opposite ends of the first primary splicing member 231, the concave portion has a rectangular shape, and the second primary splicing member 232 has a straight strip shape.
  • the joint portion 2311 closer to the end of the first primary assembling piece 231 is first selected, and the second primary assembling piece 232 of the corresponding width is selected. Then, one end of the second primary assembling piece 232 is placed on the concave portion of the joint portion 2311. Then, one end of the second primary assembling piece 232 is spliced and fixed on the joint portion 2311 by screwing, fastening or welding.
  • the splicing portion 2312 that is farther from the end of the first primary splicing member 231 is first selected, and the second primary splicing member 232 of the corresponding width is selected.
  • one end of the second primary assembling piece 232 is placed on the concave portion of the joint portion 2312. Then, one end of the second primary assembling piece 232 is spliced and fixed on the joint portion 2312 by screwing, fastening or welding.
  • a protrusion is disposed at a corresponding position on the surface of the second primary assembling piece 232, wherein the protrusion of the second primary assembling piece 232 is embedded in the corresponding position of the first primary assembling piece 231 to splicing the first primary assembling piece. 231 and the second primary assembling piece 232, as shown in FIG.
  • at least two protrusions, such as two, three or four, etc., arranged along the length direction of the second primary assembling piece 232 may be disposed on one end of the second primary assembling piece 232.
  • the concave portion of the first primary assembling piece 231 is a concave portion of a multi-step structure
  • the second primary assembling piece 232 is provided with a convex portion of a multi-step structure adapted to the concave portion, as shown in FIG.
  • the bottom of the concave portion of the first primary assembling piece 231 is provided with a first through hole 2313
  • the second primary assembling piece 232 is provided with a second position corresponding to the joint portion 2311 .
  • the back frame 23 further includes a fixing member 240.
  • the fixing member 240 passes through the first through hole 2313 and the second through hole 2321 to splicing the first primary assembling piece 231 and the second primary assembling piece 232.
  • the concavities of the splice portions 2311, 2312 of the first main assembling member 231 are circular in shape.
  • those skilled in the art can completely set the shape of the recess to other polygonal shapes such as a triangle.
  • the splice portions 2311, 2312 are recesses penetrating through opposite sides of the first main splice member 231 so that one end of the second main splice member 232 Move on the splicing portions 2311, 2312.
  • the through portion can be cut off, thereby adjusting the length of the second primary assembling piece 232 as the main frame of the back frame.
  • the other end of the first primary assembling piece 231 and the two ends of the third primary assembling piece 233 are provided with two splice portions, the structure of which is the same as that of the splice portions 2311, 2312; and in the second main stitching Both ends of the member 232 and the two ends of the fourth primary assembling member 234 are correspondingly designed or not designed corresponding to different situations, such as:
  • both ends of the second primary assembling piece 232 and the both ends of the fourth primary assembling piece 234 may not be designed in any way, that is, the ends are identical in structure to other parts, and this time is selected.
  • the different splice portions 2311 (2312) at one end of the first main assembling piece 231 are spliced (the other end is also processed)
  • the width of the back frame is changed correspondingly
  • the corresponding second main assembling piece 232 and the fourth main assembling piece 234 are correspondingly changed.
  • the length is also chosen accordingly.
  • the second primary splicing member 232 and the fourth primary splicing member 234 are not cut, or the cut portion is shorter; if the selection is farther away from the first
  • the second main splicing piece 232 and the fourth main splicing piece 234 are both cut, according to the distance of the splicing part from the end of the first main splicing piece 231, and the cutting is performed.
  • the part is also longer or shorter;
  • each side of the L-shaped primary splicing piece includes at least two splicing portions.
  • At least two splicing portions are provided on the first main splicing piece, and at least two splicing portions can also be provided at the respective ends of the second splicing piece, the third splicing piece and the fourth splicing piece. Repeat them one by one.
  • the first main splicing member of the back frame 23 of the present invention is provided with at least two splicing portions, and the number of splicing portions is set according to user requirements.
  • two splicing portions 2311 and 2312 are selected. description. Therefore, when setting the mold of the back frame 23, only two sets of molds, that is, the mold of the first main assembling piece and the mold of the second main assembling piece are disposed, and a plurality of splices are arranged on the first main assembling piece to be spliced.
  • Back frame 23 of various sizes.
  • the corresponding splicing portion may be selected according to the size of the back frame 23, and the second main splicing piece is spliced on the splicing portion of the first main splicing piece through the splicing portion, and the first main splicing piece is The other splices located outside the splice location of the second primary splice are cut to obtain the back frame 23 of the desired size.
  • FIG. 16-17 the following description is made by taking four main assembling pieces and two auxiliary assembling pieces as an example to illustrate the back frame 23 of the flat panel display device 20 of the present invention, when the main assembling piece is provided with a heat source, the primary assembling piece and the like.
  • the splices that do not have a heat source are different in material selection.
  • At least two primary assembling pieces include a primary assembling piece for setting a heat source, and the primary assembling piece for setting a heat source has a first heat conducting capability, at least two main The remaining one or more primary splicing members in the splicing member that are not used to set the heat generating source have a second heat conducting capability; wherein the first heat conducting capability is greater than the second heat conducting capability.
  • the heat source can be a light-emitting diode (LED), a printed circuit board (PCB) or other heat-generating electronic device, here taking an LED as an example.
  • the parameter characterizing the thermal conductivity may be a thermal conductivity, that is, the thermal conductivity of the primary splice disposed on the heat source is greater than the thermal conductivity of one or more of the primary splices not used to set the heat source.
  • the primary assembling piece for setting the heat source has a first strength, and the remaining one or more of the at least two primary assembling pieces not used for setting the heat generating source has a second intensity, and the second intensity is greater than the first intensity.
  • the primary splicing member having the first thermal conductivity and the first strength is an aluminum member
  • the primary splicing member having the second thermal conductivity and the second strength is a galvanized steel member.
  • the heat dissipation capability can also be copper, magnesium alloy or open foam aluminum alloy; in addition to galvanized steel, the high strength can also be organic or tinplate, in addition, Plastics can be selected when the cost is low.
  • the back frame composed of four primary assembling pieces and two auxiliary assembling pieces is taken as an example, as shown in FIG. 16-17, the first primary assembling piece 291, the second primary assembling piece 292, the third primary assembling piece 293, and the fourth.
  • the main assembling piece 294, the first auxiliary assembling piece 295 and the second auxiliary assembling piece 296 form a back frame.
  • the primary assembling piece in which the heat source 25 is disposed is the third primary assembling piece 293 and the fourth primary assembling piece 294, and the third primary assembling piece 293 and the fourth primary assembling piece 294 are made of the aluminum piece M1, and other heat source 25 is not provided.
  • the first primary assembling piece 291, the second primary assembling piece 292, the first secondary assembling piece 295, and the second secondary assembling piece 296 are made of galvanized steel piece M2.
  • the primary assembling piece for setting the heat generating source may also be a laminated first layer and a second layer structure, wherein the first layer is disposed adjacent to the heat source, and the heat conductivity of the first layer is greater than the heat conductivity of the second layer.
  • the first layer is disposed adjacent to the heat source, and the material of the first layer may be selected from materials having a higher thermal conductivity than the second layer, for example, the first layer is an aluminum member, or a copper member, a magnesium alloy or an open foam aluminum alloy, and the second layer is plated. Zinc steel parts, or organic sheets, tinplate, etc.; in addition, plastics can be selected when the cost is low.
  • the primary splicing member for arranging the heat source 25 may be only one layer, and the material is made of the material of the first layer described above.
  • Aluminum parts, copper parts, etc. have better heat dissipation effect, which is beneficial to improve the life of the product; galvanized steel sheets, plastics and the like have poor heat dissipation effects, but the price is relatively cheap and the strength is high.
  • raw material costs account for the largest proportion. If the back frame is made of a material having a good heat dissipation effect such as an aluminum member, the cost is too high, and the structural strength is poor; all the materials having poor heat dissipation effects such as galvanized steel sheets have poor heat dissipation and lower product performance.
  • the invention also provides a mold for manufacturing a back frame of a flat panel display device, the mold of the back frame is provided with a main pattern of a main assembling piece for forming a back frame, and the main pattern is provided with a main body for forming at one end of the main assembling piece. a sub-pattern of at least two splices.
  • the primary splicing component is the first primary splicing component and the second primary splicing component, and corresponds to the above-mentioned main pattern; the splicing part is the splicing part of the first primary splicing component, corresponding to the above-mentioned sub-pattern, and details are not described herein again.
  • the present invention also provides a method of manufacturing a back frame of a flat panel display device, the method comprising the following steps:
  • Step 501 Manufacture at least two primary assembling pieces, wherein the at least two primary assembling pieces include a primary assembling piece for setting a heat source, and the primary assembling piece for setting a heat source has a first heat conducting capability, One or more of the remaining at least two primary splicing members that are not used to set the heat source have a second thermal conductivity that is greater than the second thermal conductivity.
  • Step 502 Splicing the at least two primary assembling pieces.
  • a joint of at least two joints is selected according to the size of the back frame.
  • the other splicing portions of the first primary splicing member located outside the splicing position of the second primary splicing member are cut off.
  • the first primary assembling piece is the first primary assembling piece
  • the second primary assembling piece is the second primary assembling piece, which will not be described herein.
  • the flat panel display device 20 of the present invention further includes a touch screen 29 which is disposed on the light emitting surface of the display panel 22 of the flat panel display device 20.
  • the flat panel display device 20 includes a backlight system 21 and the above-described display panel 22 .
  • the backlight system 21 is disposed on the back surface of the display panel 22 and provides a light source for the display panel 22 .
  • the backlight system 21 includes a light source 25, a light homogenizing mechanism 24, and a back frame 23.
  • the back frame 23 carries the light source 25 and the light homogenizing mechanism 24.
  • the light homogenizing mechanism 24 is a light guide plate; when the backlight system 21 is of a direct type, the light homogenizing mechanism 24 is a diffusing plate.
  • the back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form the main frame 27 of the back frame 23.
  • the light source is an LED light source, and a thermal conductive silica gel is disposed between the LED light source and a primary splicing member that carries the LED light source.
  • the flat panel display device 20 of the present invention may be a liquid crystal display device or a liquid crystal television set.
  • the present invention also provides a stereoscopic display device 30.
  • the stereoscopic display device 30 includes a liquid crystal lens grating 31, a backlight system 32, and a display panel 33.
  • the liquid crystal lens grating 31 is disposed on the light emitting surface of the display panel 33.
  • the backlight system 32 is the backlight system of the above embodiments, such as the backlight system 32 including the back frame 23.
  • the back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form a main frame of the back frame, which will not be described herein.
  • the present invention also provides a plasma display device 40.
  • the plasma display device 40 includes a plasma display panel 41 and a back frame 42, and the back frame 42 is disposed on the back surface of the plasma display panel 41.
  • the back frame 42 is the back frame of each embodiment described above, and details are not described herein again.
  • the back frame mold of the flat panel display device, the stereoscopic display device and the plasma display device of the present invention has a simple structure, reduces the cost of the back frame mold, and saves the material of the back frame to reduce the cost of the flat panel display device.

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Abstract

一种平板显示装置（20）的背框（23）、制造平板显示装置（20）的背框（23）的方法及背光系统（21），所述背框（23）包括至少两个主拼接件（291，292，293，294），至少两个主拼接件（291，292，293，294）拼接形成所述背框（23）的主框架（27）；至少两个主拼接件（291，292，293，294）中包括用于设置发热源（25）的主拼接件（293，294），用于设置发热源（25）的主拼接件（293，294）具有第一导热能力，至少两个主拼接件（291，292，293，294）中其余不用于设置发热源（25）的一个或以上主拼接件（291，292）具有第二导热能力；第一导热能力大于第二导热能力。背框（23）结构简单，能够降低背框模具的成本，并且节省背框（23）的材料，以降低平板显示装置（20）的成本。

Description

背框、背框的制造方法以及背光系统
【技术领域】
本发明涉及显示技术领域，特别是涉及一种平板显示装置的背框、背框的制造方法以及背光系统。
【背景技术】
现有技术中液晶显示装置包括前框、面板以及背光模组，其中背光模组包括背框、反射片、导光板以及灯组等。
目前，市场上有多种显示面板尺寸以满足人们的不同需求。例如在电视领域中，液晶面板的尺寸包括31.5、42、46、48 或55 寸，需要根据不同尺寸的液晶面板进行设置不同的背框模具。
请参见图1，图1 是现有技术中液晶显示装置的背框结构示意图。如图1 所示，现有技术中背框10 均采用整体式的背框，通常通过金属冲压或者塑料注射方式生产整体式的背框10，整体式的背框10 需要消耗过多的材料，材料成本高。此外大尺寸的背框10 需要使用较大的冲压设备，背框10 对应的模具尺寸很大，结构复杂，背框模具的成本高。因此现有技术的背框成本高。
另外，背光模组经常使用铝或者镀锌钢板作为原材，经过冲压成整体式的背板。其中，铝有较好的散热效果，有利于提高产品的寿命；镀锌钢板散热效果相对较差，价格也相对便宜很多。在背板的成本中，原材料成本占的比重最大，如果背板全部使用铝材料，成本太高，且结构强度较差；全部使用镀锌钢板，散热不好，降低产品性能。因此，如何保证产品品质并节省材料成本，以便降低整个产品成本成为现有技术中需要解决的重要问题。
【发明内容】
本发明主要解决的技术问题是提供一种背框、背框的制造方法以及背光系统，能够降低材料成本和模具成本。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种平板显示装置的背框，其包括至少两个主拼接件，至少两个主拼接件拼接形成背框的主框架；至少两个主拼接件中包括用于设置发热源的主拼接件，用于设置发热源的主拼接件具有第一导热能力，至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力；第一导热能力大于第二导热能力。
根据本发明一优选实施例，用于设置发热源的主拼接件具有第一强度，至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二强度，第二强度大于第一强度。
根据本发明一优选实施例，具有第一导热能力和第一强度的主拼接件是铝件，所述具有第二导热能力和第二强度的主拼接件是镀锌钢件。
根据本发明一优选实施例，用于设置发热源的主拼接件包括层叠的第一层和第二层，第一层邻近发热源设置，第一层的导热能力大于第二层的导热能力。
根据本发明一优选实施例，至少两个主拼接件包括相互拼接的第一主拼接件和第二主拼接件，其中第一主拼接件的一端表面设有至少两个沿第一主拼接件的长度方向上间隔排列的拼接部，所述第一主拼接件通过其一拼接部与相应的第二主拼接件的一端拼接，以形成不同尺寸的所述背框的主框架。
根据本发明一优选实施例，拼接部是第一主拼接件表面上设置的形状与第二主拼接件的一端适配的凹部，以收容第二主拼接件的一端。
根据本发明一优选实施例，拼接部是第一主拼接件表面上设置的凹部，第二主拼接件的一端表面相应位置设有沿第二主拼接件长度方向上间隔排列的凸起，凸起嵌入凹部，以拼接所述第一主拼接件和第二主拼接件。
根据本发明一优选实施例，第一主拼接件的凹部底部设有第一贯穿孔，第二主拼接件的相应位置设有第二贯穿孔，背框包括固定件，固定件穿过第一贯穿孔和第二贯穿孔以将第一主拼接件和第二主拼接件拼接。
根据本发明一优选实施例，背框包括第三主拼接件以及第四主拼接件；第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件皆为直条形，并且首尾拼接，以围绕形成背框的矩形主框架。
根据本发明一优选实施例，背框包括设置于主框架内的辅拼接件，辅拼接件与主框架拼接。
根据本发明一优选实施例，辅拼接件包括第一辅拼接件和第二辅拼接件，第一辅拼接件的两端分别与第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件中的至少两个拼接件拼接，第二辅拼接件的两端分别与第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件中的至少两个主拼接件拼接。
根据本发明一优选实施例，第一辅拼接件的两端分别与相邻设置的第一主拼接件、第二主拼接件拼接，第二辅拼接件的两端与相邻设置的第三主拼接件、第四主拼接件拼接；或第一辅拼接件的两端分别与相对设置的第一主拼接件、第三主拼接件拼接，第二辅拼接件的两端与相对设置的第一主拼接件、第三主拼接件拼接。
根据本发明一优选实施例，背框包括至少一个支架，可拆卸固定于第一主拼接件、第二主拼接件、第三主拼接件、第四主拼接件、第一辅拼接件以及第二辅拼接件之一或以上，支架设有凸包。
根据本发明一优选实施例，相拼接的拼接件之间螺接、扣接或焊接。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种制造平板显示装置的背框的方法，其包括：制作至少两个主拼接件，至少两个主拼接件中包括用于设置发热源的主拼接件，用于设置发热源的主拼接件具有第一导热能力，至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力，第一导热能力大于第二导热能力；将所述至少两个主拼接件进行拼接。
根据本发明一优选实施例，制作至少两个主拼接件的步骤包括：制作至少第一、第二两个主拼接件，其中第一主拼接件的一端设有至少两个拼接部，每个拼接部的结构与相应的第二主拼接件一端适配；将至少两个主拼接件进行拼接的步骤包括：根据背框的尺寸选择所述至少两个拼接部的一拼接部与相应的第二主拼接件的一端拼接。
根据本发明一优选实施例，当第二主拼接件的拼接位置与第一主拼接件的相邻端部之间存在其他拼接部时，在根据背框的尺寸选择至少两个拼接部的一拼接部与相应的第二主拼接件的一端拼接的步骤之前或之后，将第一主拼接件中位于第二主拼接件的拼接位置外侧的其他拼接部裁切掉。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种背光系统，其包括光源、匀光机构以及背框；背框承载光源和匀光机构，背框为上述的背框。
本发明的有益效果是：区别于现有技术的情况，本发明的背框、背框的制造方法以及背光系统通过设置最少两个主拼接件，其中设置发热源的主拼接件的导热能力大于其余不用于设置发热源的一个或以上主拼接件，据此要求选择不同的材料，降低材料成本的同时保证散热的需求；另外，其中第一主拼接件上设有至少两个拼接部，第一主拼接件通过其一拼接部与相应的第二主拼接件的一端拼接，以使背框的模具结构简单，降低背框模具的成本，并且节省背框的材料，以降低平板显示装置的生产成本。
【附图说明】
图1是现有技术中液晶显示装置的背框结构示意图；
图2是根据本发明第一实施例的平板显示装置的结构示意图；
图3是根据本发明第二实施例的平板显示装置的背框的结构示意图；
图4是根据本发明第三实施例的平板显示装置的背框的结构示意图；
图5是根据本发明第四实施例的平板显示装置的背框的结构示意图；
图6是根据本发明第五实施例的平板显示装置中的拼接方式的结构示意图；
图7是根据本发明第六实施例的平板显示装置中的第一辅拼接件对角设置在主框架上的示意图；
图8是根据本发明第七实施例的平板显示装置中的第一辅拼接件以及第二辅拼接件在主框架上的示意图；
图9是根据本发明第八实施例的一种平板显示装置的背框中拼接部的结构示意图；
图10是图9中拼接部的第一实施例的截面示意图；
图11是根据本发明第九实施例的一种平板显示装置的背框中拼接部的拼接方式的示意图；
图12是根据本发明第十实施例的一种平板显示装置的背框中拼接部的拼接方式的示意图；
图13是根据本发明第十一实施例的一种平板显示装置的背框中拼接部的拼接方式的示意图；
图14是根据本发明第十二实施例的一种平板显示装置的背框中拼接部的结构示意图；
图15是根据本发明第十三实施例的一种平板显示装置的背框中拼接部的结构示意图；
图16是根据本发明第十四实施例的平板显示装置的背框的结构示意图；
图17是根据本发明第十五实施例的平板显示装置的结构示意图；
图18是根据本发明第十六实施例的一种制造平板显示装置的背框的方法的流程图；
图19是根据本发明第十七实施例的一种具有触摸屏的平板显示装置的结构示意图；
图20是根据本发明第十八实施例的立体显示装置的结构示意图；
图21是根据本发明第十九实施例的等离子显示装置的结构示意图。
【具体实施方式】
请参见图2-3，图2是根据本发明第一实施例的平板显示装置的结构示意图，图3是根据本发明第二实施例的平板显示装置的背框的第一实施例的结构示意图。如图2所示，本实施例的平板显示装置20包括：背光系统21以及显示面板22，背光系统21设置于显示面板22的背面，并且为显示面板22提供光源。
在本实施例中，背光系统21包括光源25、匀光机构24以及背框23。其中，背框23承载光源25和匀光机构24。在背光系统21为侧光式时，匀光机构24是导光板；在背光系统21为直下式时，匀光机构24是扩散板。背框23包括至少第一主拼接件和第二主拼接件，至少第一、第二两个主拼接件形成背框23的主框架27。
一起参阅图3，背框23的第一实施例包括第一主拼接件261以及第二主拼接件262。第一主拼接件261的一端与第二主拼接件262的一端拼接，第一主拼接件261的另一端与第二主拼接件262的另一端拼接，以形成背框23的主框架27。第一主拼接件261和第二主拼接件262均为铝件或镀锌钢件。在本实施例中，第一主拼接件261和第二主拼接件262为L形。
一起参阅图4，背框23的第二实施例包括第一主拼接件281、第二主拼接件282以及第三主拼接件283。三个主拼接件281、282以及283拼接形成背框23的主框架27。三个主拼接件281、282以及283均为铝件或镀锌钢件。在本实施例中，第一主拼接件281为L形，第二、三拼接件282、283均为直条形。
此外，背框23还可以包括设置于主框架27内并与之拼接的辅拼接件。
以下以四个主拼接件和两个辅拼接件详细说明本发明平板显示装置20的背框23。
请参见图5，图5根据本发明第四实施例的平板显示装置的背框的结构示意图。如图5所示，在本实施例中背框23包括：第一主拼接件231、第二主拼接件232、第三主拼接件233、第四主拼接件234、第一辅拼接件235、第二辅拼接件236以及支架2371、2372、2373、2374、2375、2376及2377。第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234通过首尾拼接形成背框23的主框架27。第一辅拼接件235和第二辅拼接件236作为辅拼接件，设置于主框架27内，并且与主框架27拼接。
具体而言，第一主拼接件231的一端与第二主拼接件232的一端拼接，第二主拼接件232的另一端与第三主拼接件233的一端拼接，第三主拼接件233的另一端与第四主拼接件234的一端拼接，第四主拼接件234的另一端与第一主拼接件231的另一端拼接，以形成长方形的主框架27。其中，第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234均为铝件或镀锌钢件。在本实施例中，第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234均为直条形，在其他实施例中，本领域技术人员完全可以将第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234全部设置为L形，或部分设置为直条形，剩余的设置为L形。例如，在图3中，第一主拼接件261和第二主拼接件262全部设置为L形；在图4中，第一主拼接件281设置为L形，第二、三主拼接件282以及283设置为直条形。
在本实施例中，平板显示装置20的背框23均采用拼接连接方式进行拼接固定。如图6所示，以第一主拼接件231的一端与第二主拼接件232的一端拼接连接方式为例，将第二主拼接件232的一端拼接在第一主拼接件231的一端上，比如，采用螺接、扣接或焊接等方式将第二主拼接件232的一端拼接在第一主拼接件231的一端上。
在本实施例中，第一辅拼接件235和第二辅拼接件236设置于背框23的主框架27内。第一辅拼接件235的一端与第一主拼接件231拼接，第一辅拼接件235的另一端与第三主拼接件233拼接，第二辅拼接件236的一端与第一主拼接件231拼接，第二辅拼接件236的另一端与第三主拼接件233拼接，并且第二主拼接件232、第四主拼接件234、第一辅拼接件235以及第二辅拼接件236之间平行设置。在其它实施例中，本领域技术人员在主框架27内设置至少一个辅拼接件，例如在主框架27内仅仅设置第一辅拼接件235。此外，第一辅拼接件235的两端可以分别与第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234中的至少两个主拼接件拼接，例如第一辅拼接件235对角设置在主框架27内，如图7所示。同理可知，第二辅拼接件236的两端亦可以分别与第一主拼接件231、第二主拼接件232、第三主拼接件233以及第四主拼接件234中的至少两个主拼接件拼接。例如，第一辅拼接件235的两端分别与相邻设置的第一主拼接件231、第二主拼接件232拼接，第二辅拼接件236的两端分别与相邻设置的第三主拼接件233、第四主拼接件234拼接，如图8所示。
在本实施例中，背框23包括七个支架2371、2372、2373、2374、2375、2376及2377。其中，支架2371固定于第四主拼接件234上，支架2372、2373分别固定于第一辅拼接件235上，支架2374固定在第二辅拼接件236上，支架2375固定在第二主拼接件232上，支架2376、2377的两端分别固定于第一辅拼接件235和第二辅拼接件236上。实际上，支架可以固定于第一主拼接件231、第二主拼接件232、第三主拼接件233、第四主拼接件234、第一辅拼接件235以及第二辅拼接件236之一或以上。在其他实施例中，本领域技术人员完全可以在背框23上设置其他数量的支架，比如一个支架或以上。此外，支架可以拆卸固定于第一主拼接件231、第二主拼接件232、第三主拼接件233、第四主拼接件234、第一辅拼接件235以及第二辅拼接件236之一或以上。
在支架2371、2372、2373、2374、2375、2376及2377上均设有凸包（未标示），背框23可以通过该凸包固定电路板等器件。
以下进一步说明上述背框23相应的模具。在本实施例中，第一主拼接件231和第三主拼接件233的尺寸相同，形状相同，使用相同的模具冲压制得。第二主拼接件232、第四主拼接件234、第一辅拼接件235以及第二辅拼接件236的尺寸相同，形状相同，使用相同的模具冲压制得，实现模具共用。因此，本发明的背框23可以通过使用两种小尺寸模具冲压制得，相比于现有技术中背框10需要大尺寸模具，本发明的背框23的模具结构简单且小，进而降低背框23模具的成本。此外，本发明的背框23相对于现有技术中背框10的整体背框，能够大幅节省材料，以降低平板显示装置20的生产成本。
请参见图9，图9是根据本发明第八实施例的一种平板显示装置的背框中拼接部的结构示意图。如图9所示，在本实施例中，第一主拼接件的一端设有两个拼接部，拼接部的结构与相应的第二主拼接部的一端适配，以使第一主拼接件与相应的第二主拼接件的一端拼接。
具体而言，第一主拼接件231的一端设有拼接部2311、2312，拼接部2311、2312沿第一主拼接件231的长度方向上间隔排列，拼接部2311、2312是在第一主拼接件231设置的形状与第二主拼接件232的一端适配的凹部，以收容第二主拼接件232的一端。如图10所示，拼接部2311、2312为未贯穿第一主拼接件231的一端相对两侧面的凹部，凹部的形状为矩形，第二主拼接件232为一直条形。
在拼装较大尺寸背框23时，首先选择较邻近第一主拼接件231的端部的拼接部2311，并选择相应宽度的第二主拼接件232。随后将第二主拼接件232的一端设置在拼接部2311的凹部上。随后通过螺接、扣接或焊接等方式将第二主拼接件232的一端拼接固定在拼接部2311上。在拼装较小尺寸背框23时，首先选择较远离第一主拼接件231的端部的拼接部2312，并选择相应宽度的第二主拼接件232。随后将第二主拼接件232的一端设置在拼接部2312的凹部上。随后通过螺接、扣接或焊接等方式将第二主拼接件232的一端拼接固定在拼接部2312上。具体上，例如在第二主拼接件232的表面相应位置设有凸起，其中第二主拼接件232的凸起嵌入第一主拼接件231相对应位置的凹部，以拼接第一主拼接件231和第二主拼接件232，如图11所示。此外，所述第二主拼接件232的一端上可以设有至少两个沿第二主拼接件232长度方向上间隔排列的凸起，比如两个、三个或四个等。
更进一步，第一主拼接件231的凹部为多阶梯结构的凹部，第二主拼接件232相对应位置设有与凹部适配的多阶梯结构的凸部，如图12所示。此外，如图13所示，以拼接部2311为例，第一主拼接件231的凹部底部设有第一贯穿孔2313，第二主拼接件232相应于拼接部2311的位置上设有第二贯穿孔2321，背框23进一步包括固定件240，固定件240穿过第一贯穿孔2313和第二贯穿孔2321，以将第一主拼接件231和第二主拼接件232拼接。
如图14，在本发明平板显示装置的背框的另一实施例中，第一主拼接件231的拼接部2311、2312的凹部形状为圆形。但是，在其他实施例中，本领域技术人员完全可以将凹部的形状设置成三角形等其他多边形形状。
如图15，在本发明平板显示装置的背框的另一实施例中，拼接部2311、2312为贯穿第一主拼接件231的相对两侧的凹部，以使第二主拼接件232的一端在拼接部2311、2312上移动。比如在第二主拼接件232的一端穿出拼接部2312并拼接固定后，可裁切掉穿出部分，进而调节第二主拼接件232在作为背框主拼接件时的长度。
在实际应用中，第一主拼接件231的另一端以及第三主拼接件233的两端均设有两个拼接部，其结构与拼接部2311、2312的结构相同；而在第二主拼接件232的两端和第四主拼接件234的两端，对应于不同的情况，也相应进行设计或不设计，比如：
1）对应于图9和10的情况，第二主拼接件232的两端和第四主拼接件234的两端可以不进行任何设计，即端部与其他部位的结构相同，这时候在选择第一主拼接件231一端的不同拼接部2311（2312）进行拼接时（另一端同样处理），若想背框的宽度相应变化，则相应的第二主拼接件232和第四主拼接件234的长度也作相应选择。即，若选邻近第一主拼接件231一端的拼接部2311进行拼接，则不对第二主拼接件232和第四主拼接件234进行裁剪，或裁剪掉的部分较短；若选择较远离第一主拼接件231一端的拼接部2312进行拼接时，则对第二主拼接件232和第四主拼接件234均进行裁剪，按照拼接部距离第一主拼接件231一端的远近，裁剪掉的部分也较长或较短；
2）对应于图11的情况，类似前述第一种情况，只不过第二主拼接件232和第四主拼接件234以不同的凸起来分别与第一主拼接件231和第三主拼接件233配合，实现背框的宽度变化；同样，若选择除离第一主拼接件231一端最近的第一个拼接部2311之外的其他拼接部2312进行拼接时，在拼接后或拼接前，将多出的第二主拼接件232和第四主拼接件234部分进行裁剪。
以上情况也适用于仅用两个L型主拼接件进行拼接而得到背框主框架的实施例，此时L型主拼接件的每一边的端部皆包括至少两个拼接部。
也就是说，第一主拼接件上设有至少两个拼接部，同样的第二主拼接件、第三拼接件以及第四拼接件各端也可以设有至少两个拼接部，在此不再一一赘述。
综上所述，本发明的背框23的第一主拼接件上设有至少两个拼接部，根据用户需求进行设置拼接部的数量，在本实施例中选取两个拼接部2311、2312进行描述。因此，在设置背框23的模具时，仅需设置两组模具，即第一主拼接件的模具以及第二主拼接件的模具，在第一主拼接件上设置多个拼接部以拼接得到各种尺寸的背框23。在拼装背框23时，可以根据背框23的尺寸，选择相应的拼接部，通过拼接部将第二主拼接件拼接在第一主拼接件的拼接部上，并将第一主拼接件中位于第二主拼接件的拼接位置外侧的其他拼接部裁切掉，以获取所需尺寸的背框23。相对于现有技术中根据不同尺寸的背框10设置不同背框模具，本发明的平板显示装置的背框23仅需设置第一主拼接件的模具和第二主拼接件28的模具，实现满足各种尺寸产品要求的模具共用，并且模具结构简单，能够降低背框模具的成本。
请参见图16-17，下面以四个主拼接件和两个辅拼接件为例，说明本发明平板显示装置20的背框23在主拼接件设置有发热源时，该主拼接件和其它未设置发热源的拼接件在材料选择上的不同。
四个主拼接件和两个辅拼接件中，至少两个主拼接件中包括用于设置发热源的主拼接件，用于设置发热源的主拼接件具有第一导热能力，至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力；其中，第一导热能力大于第二导热能力。
发热源可以为发光二级管（LED）、印制电路板（PCB）或其他发热的电子器件，在此处以LED为例。表征导热能力的参数可以是导热系数，也就是说设置于发热源的主拼接件的导热系数大于其余不用于设置发热源的一个或以上主拼接件的导热系数。
用于设置发热源的主拼接件具有第一强度，至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二强度，第二强度大于第一强度。
具有第一导热能力和第一强度的主拼接件是铝件，具有第二导热能力和第二强度的主拼接件是镀锌钢件。当然，除了铝件外，散热能力较高的还可以是铜件、镁合金或开口泡沫铝合金等；而除了镀锌钢件外，强度高的还可以是有机片或马口铁等，另外，在要求成本低时可以选择塑胶。
下面再以四个主拼接件和两个辅拼接件组成的背框为例，如图16-17，第一主拼接件291、第二主拼接件292、第三主拼接件293、第四主拼接件294、第一辅拼接件295以及第二辅拼接件296组成背框。其中设置发热源25的主拼接件是第三主拼接件293和第四主拼接件294，第三主拼接件293和第四主拼接件294由铝件M1制作，其它未设置发热源25的第一主拼接件291、第二主拼接件292、第一辅拼接件295以及第二辅拼接件296由镀锌钢件M2制作。
此外，用于设置发热源的主拼接件也可以是层叠的第一层和第二层结构，其中第一层邻近发热源设置，第一层的导热能力大于第二层的导热能力。
第一层邻近发热源设置，第一层的材料可以选择导热能力大于第二层的材料，例如第一层是铝件，或者铜件、镁合金或开口泡沫铝合金等，第二层是镀锌钢件，或者有机片、马口铁等；另外，在要求成本低时可以选择塑胶。当然，设置发热源25的主拼接件可以是只有一层，材料用上述第一层的材料制作。
铝件、铜件等具有较好的散热效果，有利于提高产品的寿命；镀锌钢板、塑胶等散热效果较差，但价格相对便宜，强度较高。背框的成本中，原材料成本占的比重最大。如果背框全部使用铝件等具有较好的散热效果的材料，成本太高，且结构强度较差；全部使用镀锌钢板等散热效果较差的材料，则散热不好，降低产品性能。因此在实际应用中根据需要，不同位置的各部分使用不同的材料制作，比如铝件和镀锌钢板搭配，可以使产品成本最低化，同时保证散热和强度满足需求。减少材料成本，从而降低产品成本。
本发明还提供一种制造平板显示装置的背框的模具，该背框的模具设有用于形成背框的主拼接件的主图案，主图案设有上设有用于在主拼接件的一端形成至少两个拼接部的子图案。其中，主拼接件为上述第一主拼接件和第二主拼接件，对应上述的主图案；拼接部为上述第一主拼接件的拼接部，对应上述的子图案，在此不再赘述。
如图18所示，本发明还提供一种制造平板显示装置的背框的方法，该方法包括以下步骤：
步骤501：制作至少两个主拼接件，所述至少两个主拼接件中包括用于设置发热源的主拼接件，所述用于设置发热源的主拼接件具有第一导热能力，所述至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力，所述第一导热能力大于第二导热能力。
步骤502：将所述至少两个主拼接件进行拼接。
在本实施例中，当第二主拼接件的拼接位置与第一主拼接件的相邻端部之间存在其他拼接部时，在根据背框的尺寸选择至少两个拼接部的一拼接部与相应的第二主拼接件的一端拼接的步骤之前或之后，将第一主拼接件中位于第二主拼接件的拼接位置外侧的其他拼接部裁切掉。其中第一主拼接件为上述第一主拼接件，第二主拼接件为上述第二主拼接件，在此不再赘述。
如图19所示，本发明的平板显示装置20进一步包括一触摸屏29，触摸屏29设置在平板显示装置20的显示面板22的出光面上。其中，平板显示装置20包括：背光系统21以及上述的显示面板22，背光系统21设置于显示面板22的背面，并且为显示面板22提供光源。
背光系统21包括光源25、匀光机构24以及背框23。其中，背框23承载光源25和匀光机构24。在背光系统21为侧光式时，匀光机构24是导光板；在背光系统21为直下式时，匀光机构24是扩散板。背框23包括至少第一主拼接件和第二主拼接件，至少第一、第二两个主拼接件形成背框23的主框架27。光源是LED光源，并且在所述LED光源和承载LED光源的主拼接件之间设有导热硅胶。
值得注意的是，本发明的平板显示装置20可以为液晶显示装置或液晶电视机。
本发明还提供一种立体显示装置30，如图20所示，立体显示装置30包括液晶透镜光栅31、背光系统32以及显示面板33。其中，液晶透镜光栅31设置于显示面板33的出光面上。背光系统32为上述各实施例的背光系统，比如背光系统32包括背框23。其中，背框23包括至少第一主拼接件和第二主拼接件，至少第一、第二两个主拼接件形成背框的主框架，在此不再赘述。
本发明还提供一种等离子显示装置40，如图21所示，等离子显示装置40包括等离子显示面板41以及背框42，背框42设置在等离子显示面板41的背面。其中，背框42为上述各实施例的背框，在此也不再赘述。
通过上述方式，本发明平板显示装置、立体显示装置以及等离子显示装置的背框模具结构简单，降低背框模具的成本，并且节省背框的材料，以降低平板显示装置的成本。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (19)

  1. 一种平板显示装置的背框，其特征在于：
    所述背框包括至少两个主拼接件，所述至少两个主拼接件拼接形成所述背框的主框架；
    所述至少两个主拼接件中包括用于设置发热源的主拼接件，所述用于设置发热源的主拼接件具有第一导热能力，所述至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力；
    所述第一导热能力大于第二导热能力。
  2. 根据权利要求1所述的背框，其特征在于：
    所述用于设置发热源的主拼接件具有第一强度，所述至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二强度，所述第二强度大于第一强度。
  3. 根据权利要求2所述的背框，其特征在于：
    所述具有第一导热能力和第一强度的主拼接件是铝件，所述具有第二导热能力和第二强度的主拼接件是镀锌钢件。
  4. 根据权利要求2所述的背框，其特征在于：
    所述用于设置发热源的主拼接件包括层叠的第一层和第二层，所述第一层邻近发热源设置，所述第一层的导热能力大于第二层的导热能力。
  5. 根据权利要求1所述的背框，其特征在于：
    所述至少两个主拼接件包括相互拼接的第一主拼接件和第二主拼接件，其中第一主拼接件的一端表面设有至少两个沿第一主拼接件的长度方向上间隔排列的拼接部，所述第一主拼接件通过其一拼接部与相应的第二主拼接件的一端拼接，以形成不同尺寸的所述背框的主框架。
  6. 根据权利要求5所述的背框，其特征在于：
    所述拼接部是第一主拼接件表面上设置的形状与第二主拼接件的一端适配的凹部，以收容第二主拼接件的一端。
  7. 根据权利要求5所述的背框，其特征在于：
    所述拼接部是第一主拼接件表面上设置的凹部，所述第二主拼接件的一端表面相应位置设有沿第二主拼接件长度方向上间隔排列的凸起，所述凸起嵌入凹部，以拼接所述第一主拼接件和第二主拼接件。
  8. 根据权利要求7所述的背框，其特征在于：
    所述第一主拼接件的凹部底部设有第一贯穿孔，所述第二主拼接件的相应位置设有第二贯穿孔，所述背框包括固定件，所述固定件穿过第一贯穿孔和第二贯穿孔以将第一主拼接件和第二主拼接件拼接。
  9. 根据权利要求1所述的背框，其特征在于：
    所述背框包括第三主拼接件以及第四主拼接件；
    所述第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件皆为直条形，并且首尾拼接，以围绕形成所述背框的矩形主框架。
  10. 根据权利要求9所述的背框，其特征在于：
    所述背框包括设置于主框架内的辅拼接件，所述辅拼接件与主框架拼接。
  11. 根据权利要求10所述的背框，其特征在于：
    所述辅拼接件包括第一辅拼接件和第二辅拼接件，所述第一辅拼接件的两端分别与第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件中的至少两个主拼接件拼接，所述第二辅拼接件的两端分别与第一主拼接件、第二主拼接件、第三主拼接件以及第四主拼接件中的至少两个主拼接件拼接。
  12. 根据权利要求11所述的背框，其特征在于：
    所述第一辅拼接件的两端分别与相邻设置的第一主拼接件、第二主拼接件拼接，第二辅拼接件的两端与相邻设置的第三主拼接件、第四主拼接件拼接；或所述第一辅拼接件的两端分别与相对设置的第一主拼接件、第三主拼接件拼接，第二辅拼接件的两端与相对设置的第一主拼接件、第三主拼接件拼接。
  13. 根据权利要求11所述的背框，其特征在于：
    所述背框包括至少一个支架，可拆卸固定于所述第一主拼接件、第二主拼接件、第三主拼接件、第四主拼接件、第一辅拼接件以及第二辅拼接件之一或以上，所述支架设有凸包。
  14. 据权利要求1所述的背框，其特征在于：
    所述相拼接的拼接件之间螺接、扣接或焊接。
  15. 一种制造平板显示装置的背框的方法，其特征在于：
    制作至少两个主拼接件，所述至少两个主拼接件中包括用于设置发热源的主拼接件，所述用于设置发热源的主拼接件具有第一导热能力，所述至少两个主拼接件中其余不用于设置发热源的一个或以上主拼接件具有第二导热能力，所述第一导热能力大于第二导热能力；
    将所述至少两个主拼接件进行拼接。
  16. 根据权利要求15所述的方法，其特征在于：
    所述制作至少两个主拼接件的步骤包括：制作至少第一、第二两个主拼接件，其中第一主拼接件的一端设有至少两个拼接部，每个拼接部的结构与相应的第二主拼接件一端适配；
    所述将至少两个主拼接件进行拼接的步骤包括：根据背框的尺寸选择所述至少两个拼接部的一拼接部与相应的第二主拼接件的一端拼接。
  17. 根据权利要求16所述的方法，其特征在于：当所述第二主拼接件的拼接位置与所述第一主拼接件的相邻端部之间存在其他拼接部时，在根据背框的尺寸选择所述至少两个拼接部的一拼接部与相应的第二主拼接件的一端拼接的步骤之前或之后，将所述第一主拼接件中位于所述第二主拼接件的拼接位置外侧的所述其他拼接部裁切掉。
  18. 一种背光系统，其特征在于：
    所述背光系统包括光源、匀光机构以及背框；
    所述背框承载所述光源和匀光机构，所述背框为权利要求1所述的背框，所述发热源是光源。
  19. 根据权利要求18所述的背光系统，其特征在于：
    所述光源是LED光源，并且在所述LED光源和承载LED光源的主拼接件之间设有导热硅胶。
PCT/CN2011/082668 2011-11-18 2011-11-23 背框、背框的制造方法以及背光系统 WO2013071545A1 (zh)

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