WO2013071585A1 - 背光系统 - Google Patents

背光系统 Download PDF

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Publication number
WO2013071585A1
WO2013071585A1 PCT/CN2011/082770 CN2011082770W WO2013071585A1 WO 2013071585 A1 WO2013071585 A1 WO 2013071585A1 CN 2011082770 W CN2011082770 W CN 2011082770W WO 2013071585 A1 WO2013071585 A1 WO 2013071585A1
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WO
WIPO (PCT)
Prior art keywords
assembling piece
primary assembling
primary
backlight system
back frame
Prior art date
Application number
PCT/CN2011/082770
Other languages
English (en)
French (fr)
Inventor
阙成文
郭仪正
萧宇均
Original Assignee
深圳市华星光电技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 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 US13/381,662 priority Critical patent/US8727551B2/en
Publication of WO2013071585A1 publication Critical patent/WO2013071585A1/zh

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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 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 inches, 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 prior art back frame 10 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 heat dissipation structure generally adopts a uniform distribution or a random distribution manner, and the improvement of the actual heat dissipation effect is far less than expected in the design, and an additional large number of processes are not consumed. Get a good heat dissipation effect.
  • the technical problem to be solved by the present invention is to provide a backlight system capable of reducing the material cost of the back frame and improving the heat dissipation efficiency.
  • a backlight system comprising: a light source; a back frame comprising at least two primary assembling pieces, at least two primary assembling pieces being joined to form a main frame of the back frame; wherein the light source is carried on the first of the at least one primary assembling piece
  • the backlight system further includes a heat dissipating component, and the distribution of the heat dissipating component is denser as it is closer to the center of the main assembling component carrying the light source along the length direction of the main assembling piece carrying the light source.
  • the heat dissipating component is a heat sink fin or a heat sink.
  • the primary assembling member carrying the light source is formed of a heat conductive material and is provided with a heat dissipating member on a surface on a second side opposite to the direction of the first side, and the heat dissipating member and the main body carrying the light source
  • the splicing piece is integrally stamped.
  • the heat dissipating member is disposed on the aluminum extrusion, the aluminum is extruded on the main assembling member provided with the light source, and the heat dissipating member is disposed on the bottom surface of the aluminum extrusion.
  • the primary assembling piece comprises a first primary assembling piece and a second primary assembling piece, wherein one end of the first primary assembling piece is provided with at least two joints, and the structure of each joint part and corresponding One end of the second primary assembling piece is adapted, and the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece through a joint portion thereof.
  • At least two splices are spaced apart along the length of the first main splice.
  • 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 disposed on the surface of the first primary assembling piece, and the surface of the second primary assembling piece is provided with a protrusion corresponding to the surface, and the protrusion is embedded in the concave portion to splicing the first primary assembling piece and the second primary assembling piece.
  • one end of the second primary assembling piece is provided with at least two protrusions spaced along the length direction of the second primary assembling piece.
  • the back frame further includes a auxiliary splicing piece and a bracket, the auxiliary splicing piece is disposed in the main frame and spliced with the main frame; the bracket is fixed on the main splicing piece or the auxiliary splicing piece, and the bracket is provided with a convex hull.
  • the backlight system forms the back frame by splicing, which makes the structure of the back frame simple, reduces the production cost of the backlight system, and further sets the heat dissipation component closer to the center thereof along the length direction of the main splicing member carrying the light source.
  • the heat dissipating component is disposed at a higher density in the middle portion of the main splicing member where the heat is relatively concentrated; in contrast, in the side region of the main splicing member away from the central region, the density of the heat dissipating component is relatively sparse, according to the heat distribution.
  • the strength and weakness of the heat dissipation component are optimized accordingly, and the heat dissipation area of the central region is enlarged by increasing the distribution density of the heat dissipation component, thereby enhancing the heat dissipation effect on the central portion of the main assembly with relatively concentrated heat, thereby improving the heat dissipation efficiency and heat dissipation effect of the backlight system. .
  • 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.
  • 16 is a flow chart showing a method of manufacturing a back frame of a flat panel display device according to a fourteenth embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of a flat panel display device with a touch screen according to a fifteenth embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a stereoscopic display device according to a sixteenth embodiment of the present invention.
  • Figure 19 is a perspective view of a backlight system in accordance with a seventeenth embodiment of the present invention.
  • Figure 20 is an enlarged schematic view showing a primary assembling member in which a light source is disposed in the backlight system shown in Figure 19;
  • Figure 21 is a partial cross-sectional view showing a backlight system in accordance with an eighteenth 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 based on A schematic structural view 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, and a backlight system 21 It is disposed on the back 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 The light source 25 and the light homogenizing mechanism 24 are carried.
  • 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 diffusion plate.
  • Back frame 23 The at least first primary splicing member and the second primary splicing member are included, and at least the first and second primary splicing members form a 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 back frame 23
  • the main frame 27 .
  • the first primary splicing piece 261 and the second primary splicing piece 262 are both aluminum or galvanized steel.
  • the first primary assembling piece 261 and the second primary assembling piece 262 are L Shape.
  • the second embodiment of the back frame 23 includes a first primary splicing member 281 and a second primary splicing member 282. And a third primary splicing piece 283.
  • the three primary splices 281, 282, and 283 are joined to form the main frame 27 of the back frame 23.
  • Three primary splices 281, 282 and 283 are aluminum or galvanized steel.
  • the first primary assembling piece 281 is L-shaped, and the second and third primary assembling pieces 282, 283 are all straight.
  • the back frame 23 may further include a secondary splicing member 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 view 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.
  • 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 rectangular main frame 27 of the back frame 23.
  • first primary assembling piece 231 is spliced with one end of the second primary assembling piece 232, and the second primary assembling piece 232
  • the other end of the third primary assembling piece 233 is spliced with one end of the third primary assembling piece 233
  • the other end of the fourth primary assembling piece 234 is connected with the first primary assembling piece.
  • the other end of the 231 is spliced 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 All are aluminum or galvanized steel.
  • 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 All of them are straight strips.
  • those skilled in the art can completely set 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 to L-shaped, or partially set to straight, the remaining settings are L-shaped.
  • the first primary assembling piece 261 and the second primary assembling piece 262 are all set to an L shape;
  • the first primary assembling piece 281 is set to an L shape, and the second and third primary assembling pieces 282 and 283 are set to a straight strip shape.
  • the back frame 23 of the flat panel display device 20 is spliced and fixed by using a splicing connection.
  • Figure 6 For example, 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 to 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 screwing, fastening or welding.
  • the first secondary assembling piece 235 and the second secondary assembling piece 236 are disposed on the main frame of the back frame 23 Inside.
  • One end of the first auxiliary assembling piece 235 is spliced with the first primary assembling piece 231, and the other end of the first auxiliary assembling piece 235 is spliced with the third primary assembling piece 233, and the second auxiliary assembling piece 236 is 236.
  • One end is spliced with the first primary assembling piece 231
  • the other end of the second secondary assembling piece 236 is spliced with the third primary assembling piece 233
  • the second primary assembling piece 232 and the fourth primary assembling piece 234 are 234.
  • the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236 are arranged in parallel.
  • those skilled in the art provide at least one secondary splicing within the main frame 27, such as in the main frame 27 Only the first auxiliary splicing piece 235 is set inside.
  • the two ends of the first auxiliary assembling piece 235 can be respectively associated with the first primary assembling piece 231, the second primary assembling piece 232, and the third primary assembling piece 233.
  • at least two primary assembling pieces of the fourth primary assembling piece 234 are spliced, for example, the first auxiliary assembling piece 235 is diagonally disposed in the main frame 27, as shown in FIG.
  • the second auxiliary assembling piece 236 The two ends 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 may be respectively spliced.
  • the first auxiliary splicing piece The two ends of the second auxiliary assembling piece 236 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 adjacent to the adjacent third primary assembling piece 233.
  • the fourth main assembly piece 234 is spliced, as shown in Figure 8.
  • 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, and the brackets 2372 and 2373 are respectively fixed on the first auxiliary assembling piece 235, and the bracket is respectively fixed.
  • 2374 is fixed on the second auxiliary assembling piece 236, and the bracket 2375 is fixed on the second primary assembling piece 232, and the two ends of the brackets 2376 and 2377 are respectively fixed to the first auxiliary assembling piece 235 And the second auxiliary splicing piece 236.
  • the bracket can be fixed to the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, and the first auxiliary assembling piece.
  • One or more of 235 and the second secondary splicing piece 236 can completely in the back frame 23 Set a different number of brackets, such as a bracket or more.
  • the bracket can be detachably fixed to 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.
  • One or more of the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236 can be fixed to 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.
  • a convex hull (not shown) is disposed on the upper frame, and the back frame 23 can fix the circuit board and the like through the convex hull.
  • the first primary assembling piece 231 and the third primary assembling piece 233 The dimensions are the same, the shapes are the same, and they 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 The dimensions are the same, the shapes are the same, and the same mold is used for stamping to achieve mold sharing. Therefore, the back frame 23 of the present invention can be produced by stamping using two small-sized molds, compared to the back frame 10 of the prior art.
  • 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 is compared to the back frame 10 of the prior art.
  • the overall back frame can greatly save materials to reduce 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.
  • Figure 9 As shown in the embodiment, one end of the first primary assembling piece is provided with two joint portions, and the structure of the joint portion is matched with one end of the corresponding second main joint portion, so that the first primary assembling piece and the corresponding One end of the second primary assembling piece is spliced.
  • one end of the first primary assembling piece 231 is provided with a joint portion 2311, 2312, a joint portion 2311, 2312 are arranged along the length direction of the first primary assembling piece 231, and the joint portions 2311, 2312 are the shape of the first primary assembling piece 231 and the second primary assembling piece 232.
  • One end of the recess is adapted to receive one end of the second primary splicing member 232.
  • the joint portions 2311 and 2312 are not penetrated through the first primary assembling piece 231.
  • One end is opposite to the concave portions on both sides, the concave portion has a rectangular shape, and the second primary assembling member 232 has a straight strip shape.
  • the second primary assembling piece 232 is placed on the concave portion of the joint portion 2312.
  • the second primary splicing piece is then screwed, snapped or welded
  • One end of the 232 is spliced and fixed on the splicing portion 2312.
  • a protrusion is provided 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 first primary assembling piece.
  • 231 corresponding positions of the recesses to splicing the first primary assembling piece 231 and the second primary assembling piece 232, as shown in FIG.
  • the second primary assembling piece 232 One end may be provided with at least two protrusions spaced apart along the length of the second primary assembling piece 232, such as two, three or four.
  • the recess of the first primary assembling piece 231 is a recess of a multi-step structure
  • the second primary assembling piece 232 The corresponding position is provided with a convex portion of a multi-step structure adapted to the concave portion, as shown in FIG.
  • the bottom portion of the concave portion of the first primary assembling piece 231 is provided with a first through hole. 2313.
  • the second main assembling piece 232 is provided with a second through hole 2321 corresponding to the joint portion 2311.
  • the back frame 23 further includes a fixing member 240 and a fixing member 240. The first through hole 2313 and the second through hole 2321 are passed through to splicing the first primary assembling piece 231 and the second primary assembling piece 232.
  • the splicing portion 2311 of the first primary assembling piece 231 is 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 splicing portions 2311, 2312 are such that one end of the second primary assembling piece 232 moves on the joint portions 2311, 2312.
  • the through-out portion can be cut off, thereby adjusting the length of the second primary splicing member 232 as the main splicing member of the back frame.
  • the other end of the first primary assembling piece 231 and the third primary assembling piece 233 Both ends are provided with two splice portions, the structure of which is the same as that of the splice portions 2311, 2312; and at both ends of the second main splice member 232 and the fourth main splice member 234
  • the two ends correspond to different situations and are designed or not designed accordingly, such as:
  • both ends of the second primary assembling piece 232 and the fourth primary assembling piece 234 may be of no design, that is, the ends are identical in structure to the other parts, and at this time, the different splices 2311 (2312) at one end of the first main assembling piece 231 are selected.
  • the splicing is performed (the other end is also treated), if the width of the back frame 23 is changed correspondingly, the corresponding second primary splicing piece 232 and the fourth primary splicing piece 234 are respectively The length is also chosen accordingly.
  • the second primary splicing member 232 and the fourth primary splicing member 234 are not 234.
  • the cutting is performed, or the cut portion is shorter; if the splicing portion 2312 which is farther away from the end of the first primary assembling piece 231 is selected for splicing, then the second primary assembling piece 232 and the fourth primary assembling piece 234 are 234.
  • the cutting is performed, and the cut portion is longer or shorter according to the distance from the end of the first main assembling piece 231 of the joint portion;
  • the second case is similar to the first case described above, as shown in Fig. 11, except that the second primary assembling piece 232 and the fourth primary assembling piece are 234 is matched with the first primary assembling piece 231 and the third primary assembling piece 233 by different protrusions to realize the width variation of the back frame 23; likewise, if the first primary assembling piece is selected, the second primary assembling piece 231 is selected.
  • the other splicing portions 2312 other than the first splicing portion 2311 at one end are spliced, the second main splicing piece 232 and the fourth main splicing piece 234 are added after splicing or splicing. Part of the cropping.
  • the back frame 23 of the present invention The first primary assembling piece is provided with at least two splicing portions, and the number of the splicing portions is set according to the user's requirements.
  • two splicing portions 2311 and 2312 are selected for description. Therefore, in the back frame 23
  • only two sets of molds that is, the mold of the first primary assembling piece and the mold of the second primary assembling piece are disposed, and a plurality of joints are arranged on the first primary assembling piece to obtain the back frame 23 of various sizes. .
  • the back frame 23 When, according to the back frame 23 The size of the joint is selected, and the second primary assembling piece is spliced on the joint portion of the first primary assembling piece through the jointing portion, and the other of the first primary assembling piece is located outside the stitching position of the second primary assembling piece.
  • the splicing section is cut to obtain the back frame of the desired size twenty three .
  • the back frame 23 of the flat panel display device of the present invention only needs to be provided with the mold of the first primary assembling piece and the second primary assembling piece 28, as compared with the prior art, which is provided with different back frame molds according to different sizes of the back frame 10.
  • the mold realizes the mold sharing that meets the requirements of various sizes of products, and the mold structure is simple, which can reduce the cost of the back frame mold.
  • the invention also provides a mold for manufacturing a back frame of a flat panel display device, wherein the module of the back frame is provided with a main pattern for forming a main assembling piece of the back frame, and the main pattern is provided with one end for the main assembling piece A sub-pattern of at least two splices is formed.
  • the main splicing piece is the first main splicing piece and the second main splicing piece, and corresponds to the main pattern;
  • the splicing part is the splicing part of the first main splicing piece, 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 At least a first and a second primary assembling piece are formed, wherein one end of the first primary assembling piece is provided with at least two joints, and the structure of each joint is matched with one end of the corresponding second primary assembling piece.
  • Step 502 Select a joint portion of the at least two joint portions according to the size of the back frame to splicing with one end of the corresponding second primary assembling piece.
  • 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, and details are not described herein again. .
  • the flat panel display device 20 of the present invention further includes a touch screen 29, a touch screen 29 It 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 display panel 22, and a backlight system 21 It is disposed on the back 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 a uniform light 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 diffusion plate.
  • Back frame 23 The at least first primary splicing member and the second primary splicing member are included, and at least the first and second primary splicing members form a main frame 27 of the back frame 23.
  • the backlight system 21 can also be a structure in any of the foregoing backlight system embodiments.
  • 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, as shown in Fig. 18, the stereoscopic display device 30 includes a liquid crystal lens grating 31. , backlight system 32 and 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 a backlight system of the above embodiments, such as a backlight system.
  • 32 includes 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.
  • Backlight system 32 It may also be a structure in any of the foregoing backlight system embodiments, and details are not described herein again.
  • FIG. 19 is a perspective view of a backlight system in accordance with a seventeenth embodiment of the present invention.
  • the backlight system 21 includes: a back frame 23 and the light source 25, of course, the backlight system 21 further includes a reflecting plate, a light guiding plate and the like (not shown).
  • the back frame 23 includes a first primary assembling piece 231, a second primary assembling piece 232, a third primary assembling piece 233, and a fourth primary assembling piece. 234, the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236.
  • 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 main frame of the back frame 23 is spliced.
  • the light source 25 is disposed on the first side of the second primary assembling piece 232.
  • Light source 25 can be LED Lamps or other light-emitting devices of the prior art are not described herein.
  • the second primary assembling piece 232 is formed of a heat conductive material and is provided with a heat dissipating member 60 on a surface of the second side opposite to the direction of the first side. .
  • the thermally conductive material is preferably extruded from aluminum.
  • the direction of the length is closer to the distribution of the heat dissipating elements 60 at the center of the second primary assembling piece 232.
  • the heat dissipating member 60 In other words, in the central portion of the second primary splicing member 232 where the heat is relatively concentrated, the heat dissipating member 60 The density of the arrangement is higher; in contrast, the heat dissipating member 60 is located at a side region of the second primary assembling piece 232 away from the central portion thereof, adjacent to the first primary assembling piece 231 or the third primary assembling piece 233.
  • the density of settings is relatively sparse.
  • the distribution density of the heat dissipating component 60 is optimized according to the strength of the heat distribution on the second primary assembling piece 232, and the heat dissipating component is increased by 60.
  • the distribution density increases the heat dissipation area of the central region, and enhances the heat dissipation effect on the central portion of the main splicing piece where the heat is relatively concentrated, thereby improving the heat dissipation efficiency and the heat dissipation effect of the backlight system.
  • the heat dissipating component 60 and the second main assembling component 232 are integrally formed by stamping.
  • Heat sink 60 It can be a heat sink fin, a heat sink or other prior art heat sink.
  • the heat sink fins or heat sinks extend away from the light source to increase heat dissipation.
  • the heat sink block can be, for example, a circular, square or triangular heat sink cylinder or the like.
  • the cross section of the heat sink fin may be a rectangle or a triangle or the like.
  • the light source may also be disposed on one or more of the other primary assembling pieces 231, 233, 234.
  • the heat generating material is formed on the surface of the second side opposite to the direction of the first side, and the heat dissipating component is optimized according to the heat distribution on the main assembling piece.
  • the distribution density of the heat dissipating component is dense, and the distribution of the heat dissipating component is more dense when the heat is concentrated on the main splicing piece provided with the light source.
  • FIG 21 is a partial cross-sectional view showing a backlight system in accordance with an eighteenth embodiment of the present invention. As shown in Figure 21, this embodiment and the figure The main difference of the embodiment shown in Figs. 19-20 is that the heat dissipating member 60 is disposed on the aluminum extrusion 80, and the aluminum extrusion 80 is fixed to the main assembling member 232 carrying the light source 25, wherein the heat dissipating member 60 Set on the underside of aluminum extrusion 80.
  • the heat dissipating member 60 may not be disposed on the bottom surface of the aluminum extrusion 80, but may be disposed along the extending direction of the aluminum extrusion 80.
  • the flat frame display device, the stereoscopic display device, and the back frame mold of the plasma display device have a simple structure, reduce the cost of the back frame mold, and save the material of the back frame to reduce the cost of the flat display device, and further pass through the main splicing carrying the light source.

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Abstract

一种背光系统（21），该背光系统（21）包括光源（25）；背框（23），背框（23）包括至少两个主拼接件（231，232），该至少两个主拼接件（231，232）拼接形成背框（23）的主框架；其中，光源（25）承载于至少一主拼接件（231，232）的第一侧上，背光系统（21）进一步包括散热元件（60），且沿着承载有光源（25）的主拼接件（231，232）的长度方向，越靠近承载有光源（25）的主拼接件（231，232）的中央处，散热元件（60）的分布越密集。背光系统（21）通过拼接方式形成背框（23），使背框（23）的结构简单，降低背光系统（21）的生产成本，并进一步通过在承载有光源（25）的主拼接件（231，232）上沿着其长度方向越靠近其中央处设置的散热元件（60）越密集，由此提高背光系统（21）的散热效率。

Description

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。
进一步的，在现有技术的铝挤的散热方式中，散热结构一般采用均匀分布或无规则的分布方式，对实际散热效果的提升远没有设计时预想的大，额外消耗了大量的工序却没有得到良好的散热效果。
【发明内容】
本发明主要解决的技术问题是提供一种 背光系统，能够降低背框的材料成本并提高散热效率。
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，该背光系统包括：光源；背框，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；其中，光源承载于至少一主拼接件的第一侧上，背光系统进一步包括散热元件，且沿着承载有光源的主拼接件的长度方向，越靠近承载有光源的主拼接件的中央处，散热元件的分布越密集。
根据本发明的一优选实施例，散热元件为散热鳍片或散热块。
根据本发明的一优选实施例，承载有光源的主拼接件由导热材料形成且其在与第一侧的方向相反的第二侧的表面设置有散热元件，且散热元件与承载有光源的主拼接件一体冲压成型。
根据本发明的一优选实施例，散热元件设置在铝挤上，铝挤固定于设置有光源的主拼接件上，且散热元件设置于铝挤的底面。
根据本发明的一优选实施例，主拼接件包括第一主拼接件和第二主拼接件，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的一端适配，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。
根据本发明一优选实施例， 至少两个拼接部沿第一主拼接件的长度方向上间隔排列。
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，第二主拼接件的表面相应位置设有凸起，凸起嵌入凹部，以拼接第一主拼接件和第二主拼接件。
根据本发明一优选实施例， 第二主拼接件的一端设有至少两个沿第二主拼接件长度方向上间隔排列的凸起。
根据本发明一优选实施例， 背框进一步包括辅拼接件和支架，辅拼接件设置于主框架内并与主框架拼接；支架固定于主拼接件或辅拼接件上，支架设有凸包。
本发明的有益效果是：区别于现有技术的情况，本发明的
背光系统通过拼接方式形成背框，使背框的结构简单，降低背光系统的生产成本，并进一步通过在承载有光源的主拼接件上沿着其长度方向越靠近其中央处散热元件设置得越密集，在热量相对集中的主拼接件中部区域，散热元件设置的密度较高；与此相对，在主拼接件远离中部区域的边侧区域，散热元件设置的密度相对稀疏，以此根据热量分布的强弱相应优化散热元件分布密度，通过增加散热元件的分布密度来扩大中部区域的散热面积，增强对热量相对集中的主拼接件中部区域的散热效果，从而提高背光系统的散热效率和散热效果。
【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一种制造平板显示装置的背框的方法的流程图；
图17是根据本发明第十五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18是根据本发明第十六实施例的立体显示装置的结构示意图；
图19是根据本发明第十七实施例的背光系统的立体示意图；
图20是图19中所示的背光系统的中设置有光源的主拼接件的放大示意图；
图21是根据本发明第十八实施例的背光系统的部分截面示意图。
【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、三主拼接件 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 的矩形主框架 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 ）第一种情况，如图 10 所示，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 23 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 的长度也作相应的选择。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 ）第二种情况，类似前述第一种情况，如图 11 所示，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 23 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 形主拼接件进行拼接而得到背框 23 的主框架 27 。
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。
本发明还提供一种制造平板显示装置的背框的模具，该背框的模组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 16 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。
步骤 502 ：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。
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 17 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 。
当然，背光系统 21 还可以是前述任一背光系统实施例中的结构。
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 18 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。背光系统 32 还可以是前述任一背光系统实施例中的结构 ，在此不再赘述 。
图 19 是根据本发明第十七实施例的背光系统的立体示意图。如图 19 所示， 背光系统 21 包括：背框 23 和光源 25 ，当然，背光系统 21 还包括反射板，导光板等元件（图未示出）。
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 及第二辅拼接件 236 。第一主拼接件 231 、第二主拼接件 232 、第三主拼接件 233 及第四主拼接件 234 拼接形成背框 23 的主框架。
其中，光源 25 设置于第二主拼接件 232 的第一侧上。光源 25 可以采用 LED 灯或现有技术的其他发光器件，此处不再赘述。
第二主拼接件 232 由导热材料形成且其在与第一侧的方向相反的第二侧的表面设置有散热元件 60 。导热材料优选为铝挤。
如图 20 所示，在本实施例中，在设置有光源 25 的第二主拼接件 232 上沿着第二主拼接件 232 长度的方向，越靠近第二主拼接件 232 中央处散热元件 60 的分布越密集。换而言之，在热量相对集中的第二主拼接件 232 的中部区域，散热元件 60 设置的密度较高；与此相对，在第二主拼接件 232 远离其中部区域、靠近第一主拼接件 231 或第三主拼接件 233 的边侧区域，散热元件 60 设置的密度相对稀疏。本实施例中，根据第二主拼接件 232 上热量分布的强弱相应优化散热元件 60 的分布密度，通过增加散热元件 60 的分布密度来扩大中部区域的散热面积，增强对热量相对集中的主拼接件中部区域的散热效果，从而提高了背光系统的散热效率和散热效果。
本发明实施例中，散热元件 60 与第二主拼接件 232 一体冲压成型。散热元件 60 可以为散热鳍片、散热块或其他现有技术的散热元件。散热鳍片或散热块向远离光源的方向延伸，以增加散热效果。散热块例如可以采用圆形、方形或三角形的散热柱体等。散热鳍片的横截面可以采用矩形或三角形等。
当然，在其他实施例中，光源还可以设置在其他主拼接件 231 ， 233 ， 234 的其中一个或多个上 ，只要满足设置有光源的主拼接件则皆由导热材料形成且其在与第一侧的方向相反的第二侧的表面设置有散热元件，并根据主拼接件上热量分布的强弱相应优化散热元件的分布密度的疏密，且在设置有光源的主拼接件上热量越集中处散热元件的分布越密集即可。
图 21 是根据本发明第十八实施例的背光系统的部分截面示意图。如图 21 所示，本实施方式和图 19-20 所示实施方式的主要区别在于， 散热元件 60 设置在铝挤 80 上，铝挤 80 固定于承载有光源 25 的主拼接件 232 上，其中，散热元件 60 设置于铝挤 80 的底面。当然，散热元件 60 还可以不设置于铝挤 80 的底面，而是沿着铝挤 80 的延伸方向设置。
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，并进一步通过在承载有光源的主拼接件上沿着其长度方向越靠近其中央处设置的散热元件越密集，由此提高背光系统的散热效率和散热效果。
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 (10)

  1. 一种背光系统，其特征在于：所述背光系统包括：
    光源；
    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；
    其中，所述光源承载于至少一所述主拼接件的第一侧上，所述背光系统进一步包括散热元件，且沿着所述承载有光源的主拼接件的长度方向，越靠近所述承载有光源的主拼接件的中央处，所述散热元件的分布越密集。
  2. 根据权利要求1所述的背光系统，其特征在于：所述散热元件为散热鳍片或散热块。
  3. 根据权利要求2所述的背光系统，其特征在于：所述承载有光源的主拼接件由导热材料形成且其在与所述第一侧的方向相反的第二侧的表面设置有所述散热元件，且所述散热元件与所述承载有光源的主拼接件一体冲压成型。
  4. 根据权利要求2所述的背光系统，其特征在于：所述散热元件设置在铝挤上，所述铝挤固定于所述设置有光源的主拼接件上，且所述散热元件设置于所述铝挤的底面。
  5. 根据权利要求1所述的背光系统，其特征在于：所述主拼接件包括第一主拼接件和第二主拼接件，其中所述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所述第二主拼接件的一端适配，所述第一主拼接件通过其一拼接部与相应的所述第二主拼接件的一端拼接。
  6. 根据权利要求5所述的背光系统，其特征在于：
    所述至少两个拼接部沿第一主拼接件的长度方向上间隔排列。
  7. 根据权利要求 6 所述的背光系统，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。
  8. 根据权利要求 6 所述的背光系统，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表面相应位置设有凸起，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。
  9. 根据权利要求 8 所述的背光系统，其特征在于：
    所述第二主拼接件的一端表面设有至少两个沿第二主拼接件长度方向上间隔排列的凸起。
  10. 根据权利要求 9 所述的背光系统，其特征在于：
    所述背框进一步包括辅拼接件和支架，所述辅拼接件设置于所述主框架内并与所述主框架拼接；所述支架固定于所述主拼接件或所述辅拼接件上，所述支架设有凸包。
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