WO2014015508A1 - 背光系统以及平板显示装置 - Google Patents

背光系统以及平板显示装置 Download PDF

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Publication number
WO2014015508A1
WO2014015508A1 PCT/CN2012/079236 CN2012079236W WO2014015508A1 WO 2014015508 A1 WO2014015508 A1 WO 2014015508A1 CN 2012079236 W CN2012079236 W CN 2012079236W WO 2014015508 A1 WO2014015508 A1 WO 2014015508A1
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WO
WIPO (PCT)
Prior art keywords
back frame
primary assembling
assembling piece
piece
display device
Prior art date
Application number
PCT/CN2012/079236
Other languages
English (en)
French (fr)
Inventor
萧宇均
郭仪正
黄冲
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 US13/580,138 priority Critical patent/US20140029240A1/en
Publication of WO2014015508A1 publication Critical patent/WO2014015508A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted reflectors
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133314—Back frames

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a backlight system and a flat panel display device.
  • a liquid crystal display device includes a front frame, a display panel, and a backlight system, wherein the backlight system includes a back frame, a reflective plate, a light group, and the like.
  • the size of the display panel is 31.5, 42, 46, 48 or 55 inches, and it is necessary to set different back frame molds according to display panels of different sizes.
  • FIG. 1 is a schematic structural view of a back frame of a prior art liquid crystal display device.
  • the back frame 10 adopts an integral back frame, and the integral back frame 10 is usually produced by metal stamping or plastic injection.
  • the integral back frame 10 requires more material to be consumed, and its material cost is higher.
  • the large-sized back frame 10 needs to use a large punching device, and the corresponding frame of the back frame 10 has a large size and a complicated structure, and the cost of the back frame mold is also high. Therefore, the cost of the back frame is generally higher.
  • the reflector mainly includes a reflective layer and a substrate layer, and the reflective layer is combined with the substrate layer to form a reflective plate.
  • the reflector is placed on the back frame, and the light guide plate and the optical film are stacked on the reflector.
  • the application of the reflector is mainly due to the fact that the back frame needs to be stamped with convex hulls or ribs, so it is not a complete plane, and the reflector needs to be placed overhead, which causes the reflector to be collapsed due to weak strength and thus affecting the assembly.
  • the optical quality of the entire backlight system is mainly due to the fact that the back frame needs to be stamped with convex hulls or ribs, so it is not a complete plane, and the reflector needs to be placed overhead, which causes the reflector to be collapsed due to weak strength and thus affecting the assembly.
  • the optical quality of the entire backlight system is mainly due to the fact that the back frame needs to be stamped with convex hulls or ribs, so it is not a complete plane, and the reflector needs to be placed overhead, which causes the reflector to be collapsed due to weak strength and thus affecting the assembly.
  • the optical quality of the entire backlight system is mainly due to the fact that the back frame needs to be stamped with con
  • the technical problem to be solved by the present invention is to provide a backlight system and a flat panel display device capable of effectively preventing light leakage and preventing the reflector from collapsing.
  • a technical solution adopted by the present invention is to provide a backlight system including a light homogenizing mechanism, a reflecting plate, a back frame, and a polyethylene terephthalate (PET) substrate;
  • the mechanism is disposed on the back frame, the PET substrate is disposed between the light homogenizing mechanism and the back frame, and the reflective plate is disposed between the light homogenizing mechanism and the PET substrate, wherein the color of the PET substrate is black and the PET substrate is pasted on the back frame;
  • the back frame includes at least two primary assembling pieces, and at least two primary assembling pieces are joined to form a main frame of the back frame.
  • the reflector comprises a substrate layer and a reflective layer disposed on the substrate layer, and the substrate layer is in contact with the PET substrate.
  • a backlight system including a light homogenizing mechanism, a reflector, a back frame, and a polyethylene terephthalate (PET) substrate;
  • the optical mechanism is disposed on the back frame, the PET substrate is disposed between the light homogenizing mechanism and the back frame, the reflective plate is disposed between the light homogenizing mechanism and the PET substrate;
  • the back frame includes at least two primary assembling pieces, and at least two primary assembling pieces Splicing forms the main frame of the back frame.
  • the color of the PET substrate is black.
  • the reflector comprises a substrate layer and a reflective layer disposed on the substrate layer, and the substrate layer is printed with an ink layer on the surface of the reflective layer.
  • the PET substrate is attached to the back frame.
  • a flat panel display device including a display panel and a backlight system, the backlight system providing a light source for the display panel, wherein the backlight system includes a light homogenizing mechanism, a reflecting plate, a back frame and a PET substrate; the light homogenizing mechanism is disposed on the back frame, the PET substrate is disposed between the light homogenizing mechanism and the back frame, the reflecting plate is disposed between the light homogenizing mechanism and the PET substrate; and the back frame includes at least two The primary assembling piece, at least two primary assembling pieces are spliced to form a main frame of the back frame.
  • the color of the PET substrate is black.
  • the reflector comprises a substrate layer and a reflective layer disposed on the substrate layer, and the substrate layer is in contact with the PET substrate.
  • the PET substrate is attached to the back frame.
  • the back frame includes at least one auxiliary splicing piece, and the auxiliary splicing piece is disposed in the main frame and spliced with the main frame.
  • the back frame further includes a bracket fixed on the main splicing piece or the auxiliary splicing piece, and the bracket is used for fixing the circuit board.
  • the primary assembling piece comprises a first primary assembling piece and a second primary assembling piece, and one end of the first primary assembling piece is provided with at least two joint parts, and the structure of each joint part is adapted to the end of the corresponding second primary piece
  • 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 arranged at intervals along the length direction of the first main splice.
  • the splicing portion is a recess provided on a surface of the first main splicing piece and adapted to an end of the second main splicing piece to receive one end of the second main splicing 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 surface of the second primary assembling piece is provided with at least two protrusions arranged at intervals along the length direction of the second primary assembling piece.
  • the present invention is provided by arranging a minimum of two primary assembling pieces, and the first primary assembling piece and the second primary assembling piece are spliced, so that the back frame structure is simple, and the back frame can be saved. Material and reduce the cost of the back frame mold.
  • the PET substrate can effectively prevent light leakage, and because the PET substrate has a certain mechanical strength, it can prevent the reflector from collapsing. .
  • 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 first auxiliary splicing member diagonally disposed 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 of the splice portion shown in Figure 9;
  • FIG. 11 is a schematic view showing a splicing manner of a splicing portion in 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 in 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 in 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 splicing 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 flowchart of 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 schematic structural view of a plasma display device according to a seventeenth embodiment of the present invention.
  • FIG. 20 is a schematic view showing a specific application structure of a backlight system of the flat panel display device of the first embodiment of the present invention shown in FIG. 2;
  • Figure 21 is a schematic view showing the structure of a first embodiment of the reflecting plate of the present invention.
  • 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 the flat panel display device according to the 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 backlight system 21 further includes PET (Polyethylene). Terephthalate, polyethylene terephthalate substrate 211 and reflector 212.
  • 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 light absorbing mechanism 24 is disposed on the back frame 23, the PET substrate 211 is disposed between the light concentrating mechanism 24 and the back frame 23, and the reflective plate 212 is disposed between the light absorbing mechanism 24 and the PET substrate 211.
  • the PET substrate 211 is provided on the back frame 23 by means of pasting or the like.
  • 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 color of the PET substrate 211 is black, and when the light emitted from the light source 25 is incident on the reflective plate 212 through the light homogenizing mechanism 24, the light can be blocked by the black PET substrate 211, and light can be prevented from entering through the reflective plate 212.
  • the main frame 27 of the back frame 23 causes a problem of light leakage, improves the light-emitting quality, and can improve the light-emitting efficiency of the light source 25.
  • the PET substrate 211 has a certain mechanical strength, it is also possible to effectively prevent the collapse of the reflecting plate 212, thereby improving the quality of the flat panel display device.
  • the PET substrate 211 may also be white or other colors, and may be printed on a side of the white or other color PET substrate 211 in contact with the reflective plate 212 to print black ink or to print other colors of ink or no printing ink. Solve the problem of light leakage, which will not be repeated here.
  • the reflective plate 212 includes a substrate layer 2121 and a reflective layer 2122, and an ink layer 2123 is printed on the surface of the substrate layer 2121 facing away from the reflective layer 2122, and the ink layer 2123 is printed.
  • the ink layer 2123 is a black ink layer.
  • the main frame 27 of the back frame 23 is incident on the main frame 27 of the back frame 23, causing a problem of light leakage, and the luminous efficiency of the light source 25 can be improved.
  • the ink layer 2123 even if some of the light passes through the ink layer 2123, it is blocked by the PET substrate 211.
  • reflection can be greatly avoided.
  • the plate 212 leaks light toward the surface of the back frame 23, which reduces the risk of light leakage after the backlight system 21 is assembled, thereby improving the performance of the backlight system 21.
  • the reflective plate 212 is a structure including the base material layer 2121 and the reflective layer 2122, it is not necessary to print the ink layer 2123 on the surface of the base material layer 2121 facing away from the reflective layer 2122.
  • the base material layer 2121 and the PET substrate 211 When the PET substrate 211 is in contact with each other, and the PET substrate 211 is black, when the light generated by the light source 25 is incident on the reflective plate 212 through the uniformizing mechanism 24, part of the light passes through the reflective layer 2122, the substrate layer 2121, and finally is blocked by the PET substrate 211. The light is prevented from passing through the base material layer 2121 of the reflecting plate 212 and further incident on the main frame 27 of the back frame 23, thereby causing a problem of light leakage, and the luminous efficiency of the light source 25 can be improved.
  • 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 primary 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 into a rectangular main frame 27 of the back frame 23 by end-to-end stitching.
  • 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 method.
  • 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 secondary assembling piece 235 and the second secondary 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 on the back frame 23, such as a bracket or more.
  • 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.
  • one end of the second primary assembling piece 232 may be provided with at least two protrusions spaced along the length direction of the second primary assembling piece 232, such as two, three or four or the like.
  • 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 piece 231 are circular in shape.
  • those skilled in the art can completely set the shape of the concave portion into 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 such 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:
  • the two ends of the second primary assembling piece 232 and the two ends of the fourth primary assembling piece 234 may not be designed any, that is, the ends are identical in structure to other parts.
  • the different splicing portions 2311 (2312) at one end of the first primary assembling piece 231 are selected for splicing (the other end is also processed)
  • the width of the back frame 23 is correspondingly changed
  • the length of the splicing member 234 is also selected 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;
  • 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.
  • 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 the first and second primary assembling pieces, 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, 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 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.
  • 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 each 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.
  • the backlight system 32 may also be a structure in any of the foregoing backlight system embodiments, and details are not described herein again.
  • 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 may be the back frame of any of the foregoing embodiments, and details are not described herein again.
  • the backlight system 21 in the above embodiments further includes a reflector, which is carried on the back frame and disposed under the light-homing structure 24 or the direct-type backlight, and mainly functions to reflect the light that is incident on the bottom surface of the back frame. To improve light utilization.
  • the present invention also provides a backlight system according to any of the above embodiments. It can effectively prevent light leakage and prevent the reflector from collapsing.

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Abstract

公开了一种背光系统（21），其包括匀光机构（24）、反射板（212）、背框（23）以及聚对苯二甲酸乙二醇酯（PET）基板（211）；匀光机构（24）设置于背框（23）上，PET基板（211）设置于匀光机构（24）与背框（23）之间，反射板（212）设置于匀光机构（24）与PET基板（211）之间；背框（23）包括至少两个主拼接件，至少两个主拼接件拼接形成背框（23）的主框架（27）。还公开了一种平板显示装置（20）。通过上述系统和装置，能够有效防止漏光，并能够防止反射板（212）塌陷。

Description

背光系统以及平板显示装置
【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以及平板显示装置。
【背景技术】
现有技术中，液晶显示装置包括前框、显示面板以及背光系统，其中，背光系统包括背框、反射板以及灯组等。
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，显示面板的尺寸是31.5、42、46、48或55寸，需要根据不同尺寸的显示面板进行设置不同的背框模具。
参阅图1，图1是现有技术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需要消耗较多的材料，其材料成本较高。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，其背框模具成本也较高。因此总体上讲背框成本较高。
并且，反射板主要包括反射层及基材层，通过反射层与基材层结合形成反射板。实际应用中，将反射板置于背框之上，反射板上面再堆叠导光板及光学膜材。
目前反射板应用缺点主要为：由于背框需要冲压凸包或加强筋，因此并不是完整平面，反射板需架空放置，导致反射板易因强度较弱而在组装时出现塌陷的问题，进而影响整个背光系统的光学品质。
【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以及平板显示装置，能够有效防止漏光，并能够防止反射板塌陷。
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，背光系统包括匀光机构、反射板、背框以及聚对苯二甲酸乙二醇酯（PET）基板；匀光机构设置于背框上，PET基板设置于匀光机构与背框之间，反射板设置于匀光机构与PET基板之间，其中，PET基板颜色是黑色且PET基板粘贴设置于背框上；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，反射板包括基材层和设置于基材层上的反射层，且基材层与PET基板接触。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种背光系统，背光系统包括匀光机构、反射板、背框以及聚对苯二甲酸乙二醇酯（PET）基板；匀光机构设置于背框上，PET基板设置于匀光机构与背框之间，反射板设置于匀光机构与PET基板之间；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，PET基板颜色是黑色。
其中，反射板包括基材层和设置于基材层上的反射层，且基材层背向反射层的表面印刷有油墨层。
其中，PET基板粘贴设置于背框上。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种平板显示装置，平板显示装置包括显示面板和背光系统，背光系统为显示面板提供光源；其中，背光系统包括匀光机构、反射板、背框和PET基板；匀光机构设置于背框上，PET基板设置于匀光机构与背框之间，反射板设置于匀光机构与PET基板之间；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，PET基板颜色是黑色。
其中，反射板包括基材层和设置于基材层上的反射层，且基材层与PET基板接触。
其中，PET基板粘贴设置于背框。
其中，背框包括至少一辅拼接件，辅拼接件设置于主框架内并与主框架拼接，背框进一步包括固定于主拼接件或辅拼接件上的支架，支架用于固定电路板。
其中，主拼接件包括第一主拼接件和第二主拼接件，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。
其中，至少两个拼接部沿第一主拼接件的长度方向上间隔排列。
其中，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。
其中，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。
其中，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。
本发明的有益效果是：区别于现有技术的情况，本发明通过设置最少两个主拼接件，第一主拼接件与第二主拼接件拼接，因而背框结构简单，能够节省背框的材料，并降低背框模具的成本。另外，通过在背框上设置PET基板，再在PET基板上再依次设置反射板、导光板等，该PET基板能够有效防止漏光，并且因为PET基板具有一定的机械强度，还能够防止反射板塌陷。
【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方式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方式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方式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方式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方式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方式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方式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方式的平板显示装置的背框中拼接部的结构示意图；
图10是图9中所示的拼接部的截面示意图；
图11是根据本发明第九实施方式的平板显示装置的背框中的拼接部的拼接方式的示意图；
图12是根据本发明第十实施方式的平板显示装置的背框中的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方式的平板显示装置的背框中的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方式的平板显示装置的背框中的拼接部的结构示意图；
图15是根据本发明第十三实施方式的平板显示装置的背框中的拼接部的结构示意图；
图16是根据本发明第十四实施方式的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方式的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方式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方式的等离子显示装置的结构示意图；
图20是图2所示本发明第一实施方式的平板显示装置的背光系统的一具体应用结构示意图；
图21是本发明反射板的第一实施方式的结构示意图。
【具体实施方式】
下面结合附图和实施方式对本发明进行详细说明。
请参见图2-3，图2是根据本发明第一实施方式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方式的平板显示装置的背框的结构示意图。如图2所示，本实施方式的平板显示装置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。
并请结合图20，在本实施方式中，背光系统21包括光源25、匀光机构24以及背框23，背光系统21还包括PET（Polyethylene Terephthalate，聚对苯二甲酸乙二醇酯）基板211和反射板212。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。其中，匀光机构24设置于背框23上，PET基板211设置于匀光机构24与背框23之间，反射板212设置于匀光机构24与PET基板211之间。PET基板211通过粘贴等方式设置于背框23上。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。
本发明一实施方式中，PET基板211的颜色是黑色，光源25发出的光线经匀光机构24入射到反射板212时，光线可以被黑色PET基板211遮断，能够避免光线透过反射板212进入到背框23的主框架27而导致漏光的问题，提升发光品质并能够提高光源25的发光效率。另外，因为PET基板211具有一定的机械强度，还可以有效防止反射板212的塌陷，进而提高平板显示装置的品质。
当然，PET基板211也可以是白色或其它颜色，可以通过在白色或其它颜色的PET基板211与反射板212接触的一侧印刷黑色油墨或者印刷其它颜色的油墨或者不印刷油墨均可在一定程度上解决光线外漏的问题，此处不再一一赘述。
在另一具体应用实施方式中，请请结合图21，反射板212包括基材层2121以及反射层2122，在基材层2121背向反射层2122的表面印刷有油墨层2123，且油墨层2123与PET基板211接触，该油墨层2123为黑色油墨层。光源25产生的光线经匀光机构24入射到反射板212时，部分光线会通过反射层2122、基材层2121而最终由油墨层2123遮断，避免了光线透过反射板212的基材层2121进而入射到背框23的主框架27而导致光线外漏问题，能够提高光源25的发光效率。当然，即使仍有部分光线穿过油墨层2123，也会被PET基板211给遮断，通过在反射板212的底面印刷油墨层2123以及增设PET基板211的“双保险”结构，能够极大避免反射板212面向背框23的表面漏光，降低背光系统21组装后漏光的风险，进而提高背光系统21的性能。
当然，在反射板212为包括基材层2121以及反射层2122的结构时，并不一定需要在基材层2121背向反射层2122的表面印刷有油墨层2123，此时，基材层2121与PET基板211接触，并且PET基板211为黑色时，光源25产生的光线经匀光机构24入射到反射板212时，部分光线会通过反射层2122、基材层2121而最终由PET基板211遮断，避免了光线透过反射板212的基材层2121进而入射到背框23的主框架27而导致光线外漏问题，能够提高光源25的发光效率。
一起参阅图3，背框23的第一实施方式包括第一主拼接件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。在本实施方式中，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的第二实施方式包括第一主拼接件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。在本实施方式中，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方式的平板显示装置的背框的结构示意图。如图5所示，在本实施方式中背框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。在本实施方式中，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，在其他实施方式中，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。
在本实施方式中，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。
在本实施方式中，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。在其它实施方式中，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。
在本实施方式中，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。在其他实施方式中，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。在本实施方式中，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方式的平板显示装置的背框中拼接部的结构示意图。如图9所示，在本实施方式中，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方式中，第一主拼接件231的拼接部2311、2312的凹部形状为圆形。但是，在其他实施方式中，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方式中，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，在本实施方式中选取两个拼接部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。
在本实施方式中，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方式中的结构。
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为上述各实施方式的背光系统，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方式中的结构，在此不再赘述。
本发明还提供一种等离子显示装置40，如图19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可以为前述任一实施方式的背框，在此也不再赘述。
上述各实施方式中的背光系统21进一步包括反射板，反射板承载在背框上，且设置在匀光结构24或直下式背光源的下方，主要作用为将射向背框底面的光向上反射，以提高光利用率。
本发明还提供一种如上述任一实施方式所述的背光系统。能够有效防止漏光，并能够防止反射板塌陷。
以上所述仅为本发明的实施方式，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 (16)

  1. 一种背光系统，其特征在于：
    所述背光系统包括匀光机构、反射板、背框以及聚对苯二甲酸乙二醇酯（PET）基板；
    所述匀光机构设置于背框上，所述PET基板设置于匀光机构与背框之间，所述反射板设置于匀光机构与PET基板之间，其中，所述PET基板颜色是黑色且所述PET基板粘贴设置于所述背框上；
    所述背框包括至少两个主拼接件，至少两个所述主拼接件拼接形成所述背框的主框架。
  2. 根据权利要求1所述的背光系统，其特征在于：
    所述反射板包括基材层和设置于所述基材层上的反射层，且所述基材层与PET基板接触。
  3. 一种背光系统，其特征在于：
    所述背光系统包括匀光机构、反射板、背框以及聚对苯二甲酸乙二醇酯（PET）基板；
    所述匀光机构设置于背框上，所述PET基板设置于匀光机构与背框之间，所述反射板设置于匀光机构与PET基板之间；
    所述背框包括至少两个主拼接件，至少两个所述主拼接件拼接形成所述背框的主框架。
  4. 根据权利要求3所述的背光系统，其特征在于：
    所述PET基板颜色是黑色。
  5. 根据权利要求4所述的背光系统，其特征在于：
    所述反射板包括基材层和设置于所述基材层上的反射层，且所述基材层背向所述反射层的表面印刷有油墨层。
  6. 根据权利要求3所述的背光系统，其特征在于：
    所述PET基板粘贴设置于所述背框上。
  7. 一种平板显示装置，其特征在于：
    所述平板显示装置包括叠置的液晶显示面板和背光系统；
    其中，所述背光系统包括匀光机构、反射板、背框和PET基板；
    所述匀光机构设置于背框上，所述PET基板设置于匀光机构与背框之间，所述反射板设置于匀光机构与PET基板之间；
    所述背框包括至少两个主拼接件，至少两个所述主拼接件拼接形成所述背框的主框架。
  8. 根据权利要求7所述的平板显示装置，其特征在于：
    所述PET基板颜色是黑色。
  9. 根据权利要求8所述的平板显示装置，其特征在于：
    所述反射板包括基材层和设置于所述基材层上的反射层，且所述基材层与PET基板接触。
  10. 根据权利要求7所述的平板显示装置，其特征在于：
    所述PET基板粘贴设置于所述背框。
  11. 根据权利要求7所述的平板显示装置，其特征在于：
    所述背框包括至少一辅拼接件，所述辅拼接件设置于所述主框架内并与所述主框架拼接，所述背框进一步包括固定于所述主拼接件或所述辅拼接件上的支架，所述支架用于固定电路板。
  12. 根据权利要求7所述的平板显示装置，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，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。
  13. 根据权利要求12所述的平板显示装置，其特征在于：
    所述至少两个拼接部沿所述第一主拼接件的长度方向上间隔排列。
  14. 根据权利要求13所述的平板显示装置，其特征在于：
    所述拼接部是所述第一主拼接件表面上设置的形状与所述第二主拼接件的一端适配的凹部，以收容所述第二主拼接件的一端。
  15. 根据权利要求13所述的平板显示装置，其特征在于：
    所述拼接部是所述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，所述凸起嵌入所述凹部，以拼接所述第一主拼接件和所述第二主拼接件。
  16. 根据权利要求15所述的平板显示装置，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所述第二主拼接件长度方向上间隔排列的凸起。
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