WO2015089929A1 - 导光板、导光板制造方法及背光模块 - Google Patents

导光板、导光板制造方法及背光模块 Download PDF

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Publication number
WO2015089929A1
WO2015089929A1 PCT/CN2014/070842 CN2014070842W WO2015089929A1 WO 2015089929 A1 WO2015089929 A1 WO 2015089929A1 CN 2014070842 W CN2014070842 W CN 2014070842W WO 2015089929 A1 WO2015089929 A1 WO 2015089929A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
protrusions
guide plate
light guide
emitting body
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2014/070842
Other languages
English (en)
French (fr)
Inventor
贺虎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
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 Shenzhen China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to US14/777,121 priority Critical patent/US9715059B2/en
Publication of WO2015089929A1 publication Critical patent/WO2015089929A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0065—Manufacturing aspects; Material aspects
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0036—2-D arrangement of prisms, protrusions, indentations or roughened surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0073—Light emitting diode [LED]
    • 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

Definitions

  • the present invention relates to the field of liquid crystal display, and in particular to a light guide plate, a method of manufacturing the light guide plate for manufacturing the light guide plate, and a backlight module having the light guide plate. Background technique
  • liquid crystal display is a passive component that cannot emit light by itself, it is necessary to use a light source system as a light source of the liquid crystal display, such as a backlight module, wherein the light guide plate is an important component in the backlight module.
  • a light source system as a light source of the liquid crystal display, such as a backlight module, wherein the light guide plate is an important component in the backlight module.
  • One of them is used to convert light from a line source or a point source into a surface source to emit light.
  • the backlight module can be divided into a direct type and an edge-lit type according to a position where a light source such as a light emitting diode (LED) is disposed.
  • the light guide plate in the side-entry backlight module generally includes a light incident surface, a reflective surface intersecting the light incident surface, and a light emitting surface opposite to the reflective surface.
  • a plurality of light sources (LEDs) arranged in a line in the backlight module are disposed facing the light incident surface to emit light toward the light incident surface.
  • a plurality of microstructures are disposed on the light-emitting surface, for example, a plurality of lenticular structures parallel to each other, and the arrangement direction of the plurality of light sources is The plurality of structures extend in a direction perpendicular to each other.
  • the light guide plate is fixed in the back plate by a protrusion or a 1HJ groove as a positioning member and a groove or protrusion as a fixing member in the back plate. Since the protrusion or the groove is to be provided on the light guide plate, the prism structure on the light guide plate is destroyed.
  • the angle of the light will be A large change occurs, even scattering occurs, and light leakage is caused by the derivation of the upper prism structure. From the display point of view, the phenomenon of the jet pattern appears. The closer to the corner, the more obvious the jet pattern phenomenon, which greatly affects the backlight module. quality.
  • the optical microstructure is a plurality of prisms parallel to each other in the longitudinal direction of the light-emitting surface.
  • each prism has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface.
  • the plurality of fixing members are a plurality of card slots
  • the plurality of positioning members are a plurality of protrusions extending outward from opposite sides of the light emitting body, and the plurality of protrusions are engaged in the corresponding card slots.
  • the light guide plate is fixed in the back plate, the plurality of card slots are rectangular, the plurality of protrusions are all rectangular, the plurality of blank areas are rectangular, and each blank area corresponds to a card slot and a protrusion, each The white areas are opposite to the corresponding card slots and are spaced apart from the corresponding protrusions, and the length of each of the blank areas is greater than the width of the corresponding card slot, and the optical microstructures are disposed on the plurality of protrusions.
  • the plurality of fixing members are a plurality of card slots
  • the plurality of positioning members are a plurality of protrusions extending outward from opposite sides of the light emitting body, and the plurality of protrusions are engaged in the corresponding card slots.
  • the light guide plate is fixed in the back plate, the plurality of card slots are rectangular, the plurality of protrusions are all rectangular, the plurality of blank areas are quadrangular, and each of the two blank areas corresponds to a card slot and a protrusion.
  • the two white areas are symmetrically distributed with respect to the corresponding protrusions, and the area of the light-emitting body between the two blank areas includes a first trapezoidal sub-area that is in contact with the corresponding protrusion and is connected to the first trapezoidal sub-area a second trapezoidal sub-region, wherein a distance between an outermost side of one of the two blanking areas and an outermost side of the other blanking area is greater than a width of the corresponding card slot, and the plurality of protrusions are provided with The optical microstructure.
  • the light guide plate is fixed in the back plate, the plurality of card slots are rectangular, the plurality of protrusions are all rectangular, each of the two blank areas corresponds to one card slot and one protrusion, and the two blank areas are corresponding to the protrusions Symmetrical distribution, the light-emitting body is located in a triangle between the two white areas, the bottom edge of the triangle is connected with the corresponding protrusion, and the outermost one of the two blank areas is left to the other The distance between the outermost sides of the white regions is greater than the width of the corresponding card slots, and the optical microstructures are disposed on the plurality of protrusions.
  • the plurality of fixing members are a plurality of card slots, and the plurality of positioning members are opposite to each other from the light emitting body a plurality of protrusions extending outwardly from the side, the plurality of protrusions are engaged in the corresponding card slots to fix the light guide plate in the back plate, the plurality of card slots are trapezoidal, and the plurality of protrusions are trapezoidal, each The two blank areas correspond to a card slot and a protrusion, and the two blank areas are symmetrically distributed with respect to the corresponding protrusions, and the area of the light-emitting body located between the two blank areas is trapezoidal, and the two blank areas are The distance between the outermost side of one blanking area and the outermost side of the other blanking area is greater than the maximum width of the corresponding card slot, and the optical microstructures are disposed on the plurality of protrusions.
  • the plurality of fixing members are a plurality of protrusions
  • the plurality of positioning members are a plurality of card slots formed on opposite sides of the light-emitting body and perpendicular to the light-incident surface, the plurality of protrusions being engaged in the plurality of protrusions
  • the light guide plate is fixed in the back plate, and the plurality of card slots are U-shaped, the plurality of protrusions are circular in cross section, and the plurality of blank areas are semicircular, each The blank area corresponds to one card slot and one protrusion, and each blank area is opposite to the corresponding card slot, and the outer diameter of each blank area is larger than the maximum width of the corresponding card slot.
  • the plurality of fixing members are a plurality of protrusions
  • the plurality of positioning members are a plurality of trapezoidal protrusions having a card slot
  • the plurality of protrusions are opposite to the light-emitting body and are perpendicular to the light-incident surface.
  • an embodiment of the present invention further provides a method for manufacturing a light guide plate for manufacturing the light guide plate as described above, which comprises the steps of: rolling out an initial light guide plate with an optical microstructure covered by a roller,
  • the initial light guide plate includes a light incident surface, a reflective surface connected to the light incident surface, and a light emitting surface opposite to the reflective surface and connected to the light incident surface, and the light emitting surface includes a light emitting body and a plurality of light emitting bodies disposed on the light emitting body a positioning member; providing a planar metal fixture having the same shape as the blank portion to be formed; and heating the planar metal fixture to adhere to the blank area to be formed
  • the planar metal fixture is removed from the optical microstructure corresponding to the position until the optical microstructure is removed.
  • an embodiment of the present invention further provides a backlight module.
  • the backlight module includes a light guide plate fixed in the back plate and a light source assembly adjacent to and spaced apart from the light guide plate.
  • the back plate includes a plurality of fixing members
  • the light guiding plate includes a light incident surface, a reflecting surface connected to the light incident surface, and a light emitting surface opposite to the reflecting surface and connected to the light incident surface.
  • the light emitting surface includes a light emitting body and is disposed in the light emitting surface a plurality of positioning members on the light emitting body and corresponding to the plurality of fixing members. The plurality of positioning members cooperate with the corresponding fixing members to fix the light guide plate in the back plate.
  • a blanking area is disposed on each of the positioning members and the corresponding fixing members on the light-emitting body, and an area other than the plurality of white areas on the light-emitting main body is provided with an optical microstructure.
  • the light source assembly is opposite to the light incident surface to emit light toward the light incident surface.
  • the optical microstructure is a plurality of prisms parallel to each other in the longitudinal direction of the light-emitting surface.
  • each prism has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface.
  • the light source assembly includes a circuit board and a plurality of light emitting diodes disposed on the circuit board.
  • the plurality of light emitting diodes are spaced apart from each other and arranged in a line, and the plurality of light emitting diodes are opposite to the light incident surface to emit The light enters the light guide plate from the light incident surface, and the plurality of light emitting diodes are arranged in a line perpendicular to the longitudinal direction of the plurality of prisms.
  • the plurality of fixing members are a plurality of card slots
  • the plurality of positioning members are a plurality of protrusions extending outward from opposite sides of the light emitting body, and the plurality of protrusions are engaged in the corresponding card slots.
  • the light guide plate is fixed in the back plate, the plurality of card slots are rectangular, the plurality of protrusions are all rectangular, the plurality of blank areas are quadrangular, and each of the two blank areas corresponds to a card slot and a protrusion.
  • the plurality of fixing members are a plurality of card slots
  • the plurality of positioning members are a plurality of protrusions extending outward from opposite sides of the light emitting body, and the plurality of protrusions are engaged in the corresponding card slots.
  • the light guide plate is fixed in the back plate, the plurality of card slots are rectangular, the plurality of protrusions are all rectangular, each of the two blank areas corresponds to one card slot and one protrusion, and the two blank areas are corresponding to the protrusions Symmetrical distribution, the light-emitting body is located in a triangle between the two white areas, the bottom edge of the triangle is connected with the corresponding protrusion, and the outermost one of the two blank areas is left to the other The distance between the outermost sides of the white areas is greater than the corresponding The width of the card slot is provided on the plurality of protrusions.
  • the plurality of fixing members are a plurality of card slots
  • the plurality of positioning members are a plurality of protrusions extending outward from opposite sides of the light emitting body, and the plurality of protrusions are engaged in the corresponding card slots.
  • the light guide plate is fixed in the back plate, the plurality of card slots are trapezoidal, the plurality of protrusions are trapezoidal, each of the two blank areas corresponds to one card slot and one protrusion, and the two blank areas are corresponding to the protrusions Symmetrical distribution, the area of the light-emitting body between the two white areas is trapezoidal, and the distance between the outermost side of one of the two blank areas and the outermost side of the other blank area is greater than the corresponding The maximum width of the card slot, the optical microstructure being disposed on the plurality of protrusions.
  • the plurality of fixing members are a plurality of protrusions
  • the plurality of positioning members are a plurality of card slots formed on opposite sides of the light-emitting body and perpendicular to the light-incident surface, the plurality of protrusions being engaged in the plurality of protrusions
  • the light guide plate is fixed in the back plate, and the plurality of card slots are U-shaped, the plurality of protrusions are circular in cross section, and the plurality of blank areas are semicircular, each The blank area corresponds to one card slot and one protrusion, and each blank area is opposite to the corresponding card slot, and the outer diameter of each blank area is larger than the maximum width of the corresponding card slot.
  • the plurality of fixing members are a plurality of protrusions
  • the plurality of positioning members are a plurality of trapezoidal protrusions having a card slot
  • the plurality of protrusions are opposite to the light-emitting body and are perpendicular to the light-incident surface.
  • the plurality of protrusions are engaged in the plurality of card slots to fix the light guide plate in the back plate, and each of the two blank areas corresponds to one protrusion and one card slot, and the two blank areas Regarding the symmetric distribution of the corresponding card slots, the area of the light-emitting body between the two blank areas is triangular, and the bottom edge of the triangle is connected with the corresponding protrusion, and the remaining one of the two blank areas is the most The distance between the outer side and the outermost side of the other white space is greater than the width of the corresponding card slot, and the optical microstructure is disposed on the plurality of bumps.
  • the backlight module, the light guide plate and the light guide plate manufacturing method provided by the present invention are provided with a blank area at the joint of each positioning member and the corresponding fixing member on the light-emitting main body, and a plurality of blank areas outside the light-emitting main body
  • the area is provided with an optical microstructure so that the light reaching the white space will be totally reflected in the light guide plate without being led out, avoiding light leakage, and the spray pattern will not appear from the display angle, thereby improving the backlight module. Quality. DRAWINGS
  • FIG. 1 is a schematic plan view of a backlight module according to a first embodiment of the present invention.
  • FIG. 2 is a schematic plan view of a backlight module according to a second embodiment of the present invention.
  • FIG 3 is a schematic plan view of a backlight module according to a third embodiment of the present invention.
  • FIG. 4 is a schematic plan view of a backlight module according to a fourth embodiment of the present invention.
  • FIG. 5 is a schematic plan view of a backlight module according to a fifth embodiment of the present invention.
  • FIG. 6 is a schematic plan view of a backlight module according to a sixth embodiment of the present invention.
  • FIG. 7 is a schematic plan view of a backlight module according to a seventh embodiment of the present invention. Specific embodiment
  • a backlight module 10 according to a first embodiment of the present invention is fixed in a backboard 11, and the backplane 11 is provided with four card slots 110 as fixing members.
  • the four card slots 110 are all rectangular, and the four card slots 110 are evenly distributed on opposite sides of the back plate 11.
  • the backlight module 10 includes a light guide plate 12 and a light source assembly adjacent to and spaced apart from the light guide plate 12
  • the light-emitting surface 124 includes a light-emitting body 1240 and four protrusions 1242 as positioning members disposed on the light-emitting body 1240.
  • the light-emitting body 1240 has a rectangular shape and corresponds to a display area viewed by a user.
  • the four protrusions 1242 correspond to the four card slots 110. That is, the four protrusions 1242 are each rectangular and extend outward from the light exit body 1240, wherein two of the four protrusions 1242 are 1242 On the same side as the first side surface 126, the remaining two protrusions 1242 of the four protrusions 1242 are on the same side as the second side surface 128.
  • the four protrusions 1242 are engaged in the corresponding card slots 110 to fix the light guide plate 12 on the back plate 11.
  • Each of the protrusions 1242 of the light-emitting body 1240 is disposed with a blank area 1244 at a position where the protrusions 1242 are engaged with the corresponding card slots 110.
  • An area other than the plurality of blank areas 1244 of the light-emitting body 1240 is provided with an optical microstructure 1246.
  • the blank area 1244 is a flat area, that is, an area where the optical structure 1246 is not provided.
  • the light-emitting body 1240 is provided with four blank areas 1244, each of which has a rectangular shape, and each blank area 1244 corresponds to one card slot 110 and one protrusion 1242, and each blank area The 1244 is opposite the corresponding card slot 110 and spaced from the corresponding protrusion 1242.
  • each of the white areas 1244 is greater than the width of the corresponding card slot 110, and the optical microstructures 1246 are disposed on the four protrusions 1242.
  • the optical microstructure 1246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light exit surface 124. Each of the prisms has a triangular or semi-circular cross section in the direction perpendicular to the light exiting surface 124. It should be noted that, in order to well describe the shape and distribution of the white space 1244, the solid line is drawn around the blank area 1244 in FIG. 1, and the actual solid lines are not present. Other embodiments below The white space in the drawing is also expressed as such.
  • the light emitted from the light source unit 14 enters the light guide plate 12 through the light incident surface 122, and is reflected by the reflective surface, the first side surface 126 and the second side surface 128, and then emerges from the light exit surface 124.
  • the white area 1244 is formed, and the light reaching the blank area 1244 is on the light guide plate 12. The total reflection occurs inside and is not derived, that is, the blank area 1244 does not leak light, so that the striated phenomenon does not occur from the display angle, thereby improving the quality of the backlight module 10.
  • the number of the protrusions 1242 and the number of the card slots 110 are not limited to four in the embodiment, and may be any number of the plurality, for example, two, three, five or six, etc., as long as It is sufficient that the number of the protrusions 1242 is the same as the number of the card slots 110.
  • the protrusion 1242 and the card slot 110 The position distribution is not limited to the position distribution in the embodiment, and the protrusion 1242 and the card slot 110 can be arbitrarily distributed, as long as the protrusion 1242 is matched with the card slot 110, and the protrusion 1242 can be engaged with the corresponding card slot 110.
  • the light guide plate 12 is fixed to the back plate 11.
  • the manufacturing method of the light guide plate 12 includes two types, the first one: First, the initial light guide plate of the optical structure 1246 is rolled out by the roller, and the initial light guide plate is covered with the optical structure 1246 except for the light exit surface, and the light guide plate 12 is covered.
  • the other structure of the initial light guide plate is identical to the other structures of the light guide plate 12 except for the difference of the white space 1244; then, the planar metal fixture is used, and the shape of the planar metal fixture is The blanking area 1244 to be formed has the same shape, and the planar metal fixture is heated to 150 to 300 degrees and then adhered to the optical microstructure 1246 corresponding to the position where the white space 1244 is to be formed, and left for a while until The optical microstructure 1246 at this location is completely eliminated; finally, the planar metal fixture is removed.
  • the optical microstructure 1246 corresponding to the original white area 1244 is removed by heat deformation and the pressure of the planar metal fixture is removed, and the light guide plate 12 is obtained.
  • the second type First, the initial light guide plate of the optical microstructure 1246 is rolled out by the roller, and the initial light guide plate is covered with the optical microstructure 1246 except for the light exit surface, and the white light area is provided on the light exit surface 124 of the light guide plate 12.
  • the other structure of the initial light guide plate is exactly the same as the other structure of the light guide plate 12; then, the heat gun is used to adjust the temperature of the heat gun to 150 ⁇ 400 degrees, and the alignment is formed soon.
  • the hot air is blown at the position of the white area 1244, and after a certain period of blowing, the optical microstructure 1246 corresponding to the original white area 1244 is removed by the heat deformation and the pressure of the wind, and the light guide plate 12 is also obtained.
  • a backlight module 20 according to a second embodiment of the present invention is fixed in a backboard 21, and the backboard 21 is provided with four card slots 210 as fixing members.
  • the four card slots 210 are all rectangular, and the four card slots 210 are hooked on opposite sides of the back plate 21.
  • the backlight module 20 includes a light guide plate 22 and a light source assembly adjacent to and spaced apart from the light guide plate 22
  • the light guide plate 22 includes a light incident surface 222, a reflective surface (not shown), a light exit surface 224, a first side surface 226, and a second side surface 228.
  • the reflecting surface and the light emitting surface 224 are respectively located on opposite sides of the light guide plate 22 , and the reflecting surface and the light emitting surface 224 are both connected to the light incident surface 222 .
  • the first side 226 and the second side 228 are respectively located on opposite sides of the light guide plate 22 , and the first side 226 is parallel to the second side 228 .
  • the first side surface 226 connects the reflective surface and the light exit surface 224.
  • the second side 228 is also connected to the reflective surface and the light exit surface 224.
  • the light exiting surface 224 includes a light emitting body 2240 and four protrusions 2242 disposed on the light emitting body 2240 as positioning members.
  • the light-emitting body 2240 has a rectangular shape and corresponds to a display area viewed by a user.
  • the four protrusions 2242 correspond to the four card slots 210. That is, the four protrusions 2242 are each rectangular and extend outward from the light-emitting body 2240, wherein two of the four protrusions 2242 are on the same side as the first side 226, and the remaining two of the four protrusions 2242 The protrusion 2242 is on the same side as the second side 228.
  • the four protrusions 2242 are engaged in the corresponding card slots 210 to fix the light guide plate 22 on the back plate 21.
  • Each of the protrusions 2242 of the light-emitting body 2240 is disposed with a blank area 2244 at a position where the protrusions 2242 are engaged with the corresponding card slots 210, and an area other than the plurality of blank areas 2244 on the light-emitting body 2240 is provided with an optical microstructure 2246.
  • the blank area 2244 is a flat area, that is, an area where the optical structure 2246 is not provided.
  • the light-emitting body 2240 is provided with eight blanking areas 2244, each of which has a quadrangular shape, and each of the two blanking areas 2244 corresponds to a card slot 210 and a protrusion 2242.
  • the white area 2244 is symmetrically distributed with respect to the corresponding protrusions 2242, and the area of the light-emitting body 2240 between the two blank areas 2244 includes a first trapezoidal sub-area 2247 that is in contact with the corresponding protrusion 2242 and the first trapezoid Region 2247 continues with a second trapezoidal sub-region 2248.
  • the side of the first trapezoid sub-region 2247 that is in contact with the corresponding protrusion 2242 is the long bottom edge of the trapezoid, and the side of the first trapezoid sub-region 2247 that is in contact with the second trapezoid sub-region 2248 is short of the trapezoid. Bottom edge.
  • the side of the second trapezoid sub-region 224 that is in contact with the first trapezoid sub-region 2247 is the short base of the trapezoid.
  • the distance between the outermost side of one of the two blank areas 2244 to the outermost side of the other blank area 2244 is greater than the width of the corresponding card slot 210.
  • the optical microstructures 2246 are disposed on the plurality of protrusions 2242.
  • the optical microstructure 2246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light exit surface 224. Each of the prisms has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface 224.
  • the structure and positional arrangement of the light source assembly 24 in this embodiment are completely the same as those of the light source assembly 14 in the first embodiment, and will not be described herein.
  • the working principle and the beneficial effects of the backlight module 20 in this embodiment are completely the same as those of the backlight module 10 in the first embodiment, and the details are not described herein.
  • the manufacturing method of the light guide plate 22 in this embodiment is also the same as the manufacturing method of the light guide plate 12 in the first embodiment, and will not be described herein.
  • the backlight module 30 includes a light guide plate 32 and a light source assembly adjacent to and spaced apart from the light guide plate 32.
  • the light guide plate 32 includes a light incident surface 322, a reflective surface (not shown), a light exit surface 324, a first side surface 326 and a second side surface 328.
  • the reflecting surface and the light emitting surface 324 are respectively located on opposite sides of the light guide plate 32, and the reflecting surface and the light emitting surface 324 are connected to the light incident surface 322.
  • the first side 326 and the second side 328 are respectively located on opposite sides of the light guide plate 32, and the first side surface 326 is parallel to the second side 328.
  • the first side 326 connects the reflecting surface and the light emitting surface 324.
  • the second side 328 is also connected to the reflecting surface and the light emitting surface 324.
  • the light exiting surface 324 includes a light emitting body 3240 and four protrusions 3242 as positioning members disposed on the light emitting body 3240.
  • the light-emitting body 3240 has a rectangular shape and corresponds to a display area viewed by the user.
  • the four protrusions 3242 correspond to the four card slots 310. That is, the four protrusions 3242 are each rectangular and extend outward from the light-emitting body 3240, wherein two of the four protrusions 3242 are on the same side as the first side 326, and the remaining two of the four protrusions 3242 The protrusion 3242 is on the same side as the second side 328.
  • the four protrusions 3242 are engaged in the corresponding card slots 310 to fix the light guide plate 32 to the back plate 31.
  • the area of the light-emitting body 3240 between the two blank areas 3244 is triangular, and the bottom edge of the triangle is in contact with the corresponding protrusion 3242.
  • the distance between the outermost side of one of the two white areas 3244 and the outermost side of the other blank area 3244 is greater than the width of the corresponding card slot 310.
  • the optical microstructures 3246 are disposed on each of the protrusions 3242 and are provided with two triangular blank areas 3247, which are respectively connected to the two blank areas 3244.
  • the optical structure 3246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light-emitting surface 324. Each of the prisms has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface 324.
  • the structure and position setting of the light source assembly 34 in this embodiment are completely the same as those of the light source assembly 14 in the first embodiment, and details are not described herein again.
  • the working principle and the possession of the backlight module 30 in this embodiment are The beneficial effects are the same as those of the backlight module 10 in the first embodiment, and the advantages thereof are not described herein.
  • the method of manufacturing the light guide plate 32 in the present embodiment is completely the same as the method of manufacturing the light guide plate 12 in the first embodiment, and details are not described herein again.
  • a backlight module 40 according to a fourth embodiment of the present invention is fixed in a backboard 41.
  • the backplane 41 is provided with four card slots 410 as fixing members.
  • the four card slots 410 are all trapezoidal, and the four card slots 410 are hooked on opposite sides of the back plate 41.
  • the backlight module 40 includes a light guide plate 42 and a light source assembly adjacent to and spaced apart from the light guide plate 42.
  • the light guide plate 42 includes a light incident surface 422, a reflective surface (not shown), a light exit surface 424, a first side surface 426 and a second side surface 428.
  • the reflecting surface and the light emitting surface 424 are respectively located on opposite sides of the light guide plate 42 , and the reflecting surface and the light emitting surface 424 are connected to the light incident surface 422 .
  • the first side 426 and the second side 428 are respectively located on opposite sides of the light guide plate 42 , and the first side surface 426 is parallel to the second side 428 .
  • the first side 426 connects the reflecting surface and the light emitting surface 424.
  • the second side 428 is also connected to the reflecting surface and the light exiting surface 424.
  • the light exiting surface 424 includes a light emitting body 4240 and four protrusions 4242 as positioning members disposed on the light emitting body 4240.
  • the light-emitting body 4240 has a rectangular shape and corresponds to a display area viewed by the user.
  • the four protrusions 4242 correspond to the four card slots 410. That is, the four protrusions 4242 are each trapezoidal and extend outward from the light exit body 4240, wherein two of the four protrusions 4242 are on the same side as the first side surface 426, and the remaining two of the four protrusions 4242 The protrusion 4242 is on the same side as the second side 428.
  • the four protrusions 4242 are engaged in the corresponding card slots 410 to fix the light guide plate 42 to the back plate 41.
  • Each of the protrusions 4242 of the light-emitting body 4240 is disposed with a blank area 4244 at a position where the protrusions 4242 are engaged with the corresponding card slots 410.
  • An area other than the plurality of blank areas 4244 of the light-emitting body 4240 is provided with an optical structure 4246.
  • the blank area 4244 is a flat area, that is, an area where the optical structure 4246 is not provided.
  • the light-emitting body 4240 is provided with eight blank areas 4244, and each of the two blank areas 4244 corresponds to one card slot 410 and one protrusion 4242.
  • the two blank areas 4244 are symmetrically distributed with respect to the corresponding protrusions 4242.
  • the area of the light-emitting body 4240 between the two blank areas 4244 is trapezoidal, and the long base of the trapezoid is in contact with the corresponding protrusion 4242.
  • the distance between the outermost side of one of the two white areas 4244 and the outermost side of the other white area 4244 is greater than the maximum width of the corresponding card slot 410.
  • Every The optical protrusions 4246 and two triangular blank areas 4247 are disposed on the protrusions 4242, and the two blank areas 4247 are respectively connected to the two blank areas 4244.
  • the optical structure 4246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light exit surface 424. Each of the prisms has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface 424.
  • the structure and positional arrangement of the light source assembly 44 in this embodiment are completely the same as those of the light source assembly 14 in the first embodiment, and will not be described herein.
  • the working principle and the beneficial effects of the backlight module 40 in this embodiment are completely the same as those of the backlight module 10 in the first embodiment, and are not described herein again.
  • the manufacturing method of the light guide plate 42 in this embodiment is also the same as the manufacturing method of the light guide plate 12 in the first embodiment, and will not be described herein.
  • the backlight module 50 includes a light guide plate 52 and a light source assembly adjacent to and spaced apart from the light guide plate 52.
  • the light guide plate 52 includes a light incident surface 522, a reflective surface (not shown), a light exit surface 524, a first side surface 526 and a second side surface 528.
  • the reflecting surface and the light emitting surface 524 are respectively located on opposite sides of the light guide plate 52, and the reflecting surface and the light emitting surface 524 are connected to the light incident surface 522.
  • the first side 526 and the second side 528 are respectively located on opposite sides of the light guide plate 52, and the first side surface 526 is parallel to the second side surface 528.
  • the first side 526 connects the reflecting surface and the light emitting surface 524.
  • the second side 528 is also coupled to the reflective surface and the light exit surface 524.
  • the light exiting surface 524 includes a light emitting body 5240 and four card slots 5242 as positioning members on the light emitting body 5240.
  • the light-emitting body 5240 has a rectangular shape and corresponds to a display area viewed by a user.
  • the four card slots 5242 correspond to the four protrusions 510. That is, the four card slots 5242 are both U-shaped and recessed from the side of the light-emitting body 5240, wherein two of the four card slots 5242 are on the same side as the first side 526, four The remaining two card slots 5242 in the card slot 5242 are on the same side as the second side surface 528.
  • the four protrusions 510 are engaged in the corresponding card slots 5242 to fix the light guide plate 52 to the back plate 51.
  • the outer diameter of each of the white areas 5244 is greater than the maximum width of the corresponding card slot 5242.
  • the optical microstructure 5246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light exit surface 524. Each of the prisms has a triangular or semi-circular cross section in a direction perpendicular to the light exiting surface 524.
  • the structure and positional arrangement of the light source assembly 54 in this embodiment are completely the same as those of the light source assembly 14 in the first embodiment, and will not be described herein.
  • the working principle and the beneficial effects of the backlight module 50 in this embodiment are completely the same as those of the backlight module 10 in the first embodiment, and are not described herein again.
  • the manufacturing method of the light guide plate 52 in this embodiment is also the same as the manufacturing method of the light guide plate 12 in the first embodiment, and will not be described herein.
  • a backlight module 60 according to a sixth embodiment of the present invention is fixed in a backing plate 61, and the backing plate 61 includes four protrusions 610 as fixing members.
  • the four protrusions 610 have a rectangular cross section, and the four protrusions 610 are evenly distributed on opposite sides of the back plate 61.
  • the backlight module 60 includes a light guide plate 62 and a light source assembly adjacent to and spaced apart from the light guide plate 62.
  • the light guide plate 62 includes a light incident surface 622, a reflective surface (not shown), a light exit surface 624, a first side surface 626 and a second side surface 628.
  • the reflecting surface and the light emitting surface 624 are respectively located on opposite sides of the light guide plate 62, and the reflecting surface and the light emitting surface 624 are connected to the light incident surface 622.
  • the first side 626 and the second side 628 are respectively located on opposite sides of the light guide plate 62, and the first side 626 is parallel to the second side 628.
  • the first side 626 connects the reflecting surface and the light emitting surface 624.
  • the second side 628 is also connected to the reflecting surface and the light emitting surface 624.
  • the light-emitting surface 624 includes a light-emitting body 6240 and four trapezoidal bumps 6242 provided with a card slot 6243 as positioning members disposed on the light-emitting body 6240.
  • the light-emitting body 6240 has a rectangular shape and corresponds to a display area viewed by a user.
  • the four bumps 6242 correspond to the four protrusions 610.
  • the four bumps 6242 are each trapezoidal and extend outward from the light-emitting body 6240. Two of the four bumps 6242 are on the same side as the first side 626, and the remaining ones of the four bumps 6242 remain. Two bumps 6242 are on the same side as the second side 628.
  • the four protrusions 610 are engaged in the corresponding card slots 6243 to fix the light guide plate 62 to the back plate 61.
  • Each of the card slots 6243 on the light-emitting body 6240 is provided with a blanking area 6244 at a position where the corresponding protrusions 610 are engaged.
  • the area of the light-emitting body 6240 outside the plurality of blanking areas 6244 is provided with an optical microstructure 6246.
  • the white space 6244 is a flat area, that is, an area where the optical structure 6246 is not provided.
  • the light-emitting body 6240 is provided with eight blank areas 6244, and each of the two blank areas 6244 corresponds to one protrusion 610 and one card slot 6243.
  • the two blank areas 6244 are symmetric about the corresponding card slot 6243.
  • the area of the light-emitting body 6240 between the two blank areas 6244 is triangular, and the bottom edge of the triangle is in contact with the corresponding bumps 6242.
  • the distance between the outermost side of one of the two white areas 6244 and the outermost side of the other white area 6244 is greater than the width of the corresponding card slot 6243.
  • the optical microstructure 6246 is disposed on each of the bumps 6242 and is provided with two triangular blanking regions 6247, which are respectively connected to the two blanking regions 6244.
  • the optical structure 6246 is a plurality of prisms that are parallel to each other in the longitudinal direction of the light exit surface 624. Each prism has a triangular or semi-circular cross section in a direction perpendicular to the light exit surface 624.
  • the structure and positional arrangement of the light source assembly 64 in this embodiment are completely the same as those of the light source assembly 14 in the first embodiment, and will not be described herein.
  • the working principle and the beneficial effects of the backlight module 60 in this embodiment are completely the same as those of the backlight module 10 in the first embodiment, and will not be described herein.
  • the manufacturing method of the light guide plate 62 in this embodiment is also the same as the manufacturing method of the light guide plate 12 in the first embodiment, and will not be described herein.
  • a backlight module 70 according to a seventh embodiment of the present invention is fixed in the backboard 71.
  • This back plate 71 is identical to the back plate 11 in the first embodiment.
  • the backlight module 70 in this embodiment is different from the backlight module 10 in the first embodiment in that the backlight module 70 is also designed to face the surface of the backlight module 10 in the first embodiment opposite to the light incident surface 122.
  • the light surface 129 is then further added with a light source assembly 15 identical to the light source assembly 14 of the first embodiment.
  • the light source assembly 15 is opposite to the light incident surface 129 to emit light in the light guide plate.
  • the working principle and the beneficial effects of the backlight module 70 in this embodiment have the same working principle and beneficial effects as the backlight module 10 in the first embodiment, and the backlight module 70 in this embodiment is smaller than the backlight module 10 . Can be applied to larger size display devices. It will be understood that the newly designed light-incident surface and the new light source assembly may also be for the backlight modules in the second to sixth embodiments.

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Abstract

一种导光板（12），制造该导光板（12）的方法以及包含该导光板（12）的背光模块（10）。导光板（12）固定在具有多个固定件（110）的背板（11）中。导光板（12）包括入光面（122）、与入光面（122）相连的反射面以及与该反射面相对且与入光面（122）相连的出光面（124）。出光面（124）包括出光主体（1240）及设置在出光主体（1240）上并与多个固定件（110）对应的多个定位件（1242）。多个定位件（1242）与对应的固定件（110）配合而使导光板（12）固定在背板（11）中。出光主体（1240）上每个定位件（1242）与对应的固定件（110）配合处均设置有留白区（1244），在出光主体（1240）多个留白区（1244）之外的区域设置有光学微结构（1246）。

Description

导光板、 导光板制造方法及背光模块
技术领域
本发明涉及液晶显示领域， 尤其涉及一种导光板、 制造该导光板的导光板 制造方法及具有该导光板的背光模块。 背景技术
近年来， 随着液晶显示器的彩色化及大型化， 其应用领域更为广泛， 例如 笔记型计算机、 台式计算机及液晶电视等。 由于液晶显示器是一种被动组件， 其本身不能发光， 因而需要利用一光源系统作为液晶显示器的光源， 如背光模 块 (backlight module), 其中， 导光板 (light guide plate)是背光模块中重要的元件之 一， 其用于将线光源或点光源发出的光线转换为面光源光线射出。
一般而言， 背光模块可依光源， 例如发光二极管 (light emitting diode, LED) 所设置的位置分为直下式 (direct type)以及侧入式 (edge-lit type)两种。侧入式背光 模块中的导光板通常包括一个入光面、 一个与该入光面相交的反射面及一个与 该反射面相对的出光面。 背光模块中的多个呈直线排布的光源 (LED)均面向该入 光面设置以朝该入光面发射光线。 为了提高从该背光模块射出的光线的均匀性 及出光效率， 该出光面上会设置有多个微结构， 例如多个彼此平行的棱镜结构 (lenticular structure), 该多个光源的排布方向与该多个 结构的延伸方向垂直。 实际应用时， 导光板是通过作为定位件的突起或者 1HJ槽与背板中作为固定件的 凹槽或者突起配合而固定在背板中的。 由于要在导光板上设置突起或者凹槽， 因此会破坏导光板上的棱镜结构， 当多个光源发出的光线进入导光板后传播至 导光板与背板配合的拐角处时， 光线的角度会发生大幅变化， 甚至会发生散射， 再经过上方棱镜结构的导出而造成漏光， 从显示的角度看表现为喷射纹现象， 越靠近该拐角处， 喷射纹现象就越明显， 大大影响了背光模块的品质。
因此， 有必要提供能够解决上述问题的导光板、 制造该导光板的导光板制 造方法及具有该导光板的背光模块。 发明内容
为了解决上述技术问题， 本发明实施例提供了一种导光板。 该导光板固定 在包括多个固定件的背板中。 该导光板包括入光面、 与该入光面相连的反射面 及与该反射面相对且与该入光面相连的出光面。 该出光面包括出光主体及设置 在该出光主体上并与该多个固定件对应的多个定位件。 该多个定位件与对应的 固定件配合而使该导光板固定在背板中。 该出光主体上每个定位件与对应的固 定件配合处均设置有留白区， 该出光主体上多个留白区之外的区域设置有光学 微结构。
其中， 该光学微结构为多个在该出光面的长度方向上彼此平行的棱镜。 其中， 每个棱镜在垂直该出光面的方向上的截面呈三角形或者半圓形。 其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 该多个留白区均呈矩形， 每个留白区对应一个卡槽及一个突起， 每个留白区与对应的卡槽正对并与对应 的突起间隔， 每个留白区的长度大于对应的卡槽的宽度， 该多个突起上均设置 有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 该多个留白区均呈四边 形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应的突起对 称分布， 该出光本体位于该两个留白区之间的区域包括一个与对应的突起相接 的第一梯形子区域及与该第一梯形子区域接续的第二梯形子区域， 该两个留白 区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的卡槽 的宽度， 该多个突起上均设置有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 每两个留白区对应一个 卡槽及一个突起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该 两个留白区之间的区域呈三角形， 该三角形的底边与对应的突起相接， 该两个 留白区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的 卡槽的宽度， 该多个突起上均设置有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈梯形， 该多个突起均呈梯形， 每两个留白区对应一个 卡槽及一个突起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该 两个留白区之间的区域呈梯形， 该两个留白区中一个留白区的最外侧到另一个 留白区的最外侧之间的距离大于对应的卡槽的最大宽度， 该多个突起上均设置 有该光学微结构。
其中， 该多个固定件为多个突起， 该多个定位件为开设在该出光本体的相 背且均与该入光面垂直的两侧的多个卡槽， 该多个突起卡合在对应的卡槽内而 使该导光板固定在背板中， 该多个卡槽均呈 U形， 该多个突起的截面均呈圓形， 该多个留白区均呈半圓环形， 每个留白区对应一个卡槽及一个突起， 每个留白 区与对应的卡槽正对， 每个留白区的外径大于对应的卡槽的最大宽度。
其中， 该多个固定件为多个突起， 该多个定位件为多个开设有卡槽的梯形 凸块， 该多个凸块自该出光本体的相背且均与该入光面垂直的两侧向外延伸， 该多个突起卡合在该多个卡槽内而使该导光板固定在背板中， 每两个留白区对 应一个突起及一个卡槽， 该两个留白区关于对应的卡槽对称分布， 该出光本体 位于该两个留白区之间的区域呈三角形， 该三角形的底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于 对应的卡槽的宽度， 该多个凸块上均设置有该光学微结构。
为了解决上述技术问题， 本发明实施例还提供了一种制造如上所述的导光 板的导光板制造方法， 其包括以下步骤： 由滚轮滚压出出光面布满光学微结构 的初始导光板， 该初始导光板包括入光面、 与该入光面相连的反射面及与该反 射面相对且与该入光面相连的出光面， 该出光面包括出光主体及设置在该出光 主体上的多个定位件； 提供一种平面金属治具， 该平面金属治具的形状与即将 形成的留白区的形状相同； 及将该平面金属治具加热后紧贴在与即将形成的留 白区的位置对应的光学微结构上直至该光学微结构消除后移除该平面金属治 具。
为了解决上述技术问题， 本发明实施例还提供了一种背光模块。 该背光模 块包括一个固定在背板中的导光板及一个与该导光板相邻且间隔的光源组件。 该背板包括多个固定件， 该导光板包括入光面、 与该入光面相连的反射面及与 该反射面相对且与该入光面相连的出光面。 该出光面包括出光主体及设置在该 出光主体上并与该多个固定件对应的多个定位件。 该多个定位件与对应的固定 件配合而使该导光板固定在背板中。 该出光主体上每个定位件与对应的固定件 配合处均设置有留白区， 该出光主体上多个留白区之外的区域设置有光学微结 构。 该光源组件与该入光面正对以朝该入光面发出光线。
其中， 该光学微结构为多个在该出光面的长度方向上彼此平行的棱镜。 其中， 每个棱镜在垂直该出光面的方向上的截面呈三角形或者半圓形。 其中， 该光源组件包括一个电路板及设置在该电路板上的多个发光二极管， 该多个发光二极管彼此间隔并排列成一条直线， 该多个发光二极管与该入光面 正对以使发出的光线从该入光面进入该导光板中， 该多个发光二极管排列成的 直线与该多个棱镜的长度方向垂直。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 该多个留白区均呈矩形， 每个留白区对应一个卡槽及一个突起， 每个留白区与对应的卡槽正对并与对应 的突起间隔， 每个留白区的长度大于对应的卡槽的宽度， 该多个突起上均设置 有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 该多个留白区均呈四边 形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应的突起对 称分布， 该出光本体位于该两个留白区之间的区域包括一个与对应的突起相接 的第一梯形子区域及与该第一梯形子区域接续的第二梯形子区域， 该两个留白 区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的卡槽 的宽度， 该多个突起上均设置有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈矩形， 该多个突起均呈矩形， 每两个留白区对应一个 卡槽及一个突起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该 两个留白区之间的区域呈三角形， 该三角形的底边与对应的突起相接， 该两个 留白区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的 卡槽的宽度， 该多个突起上均设置有该光学微结构。
其中， 该多个固定件为多个卡槽， 该多个定位件为自该出光本体的相背两 侧向外延伸的多个突起， 该多个突起卡合在对应的卡槽内而使该导光板固定于 背板中， 该多个卡槽均呈梯形， 该多个突起均呈梯形， 每两个留白区对应一个 卡槽及一个突起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该 两个留白区之间的区域呈梯形， 该两个留白区中一个留白区的最外侧到另一个 留白区的最外侧之间的距离大于对应的卡槽的最大宽度， 该多个突起上均设置 有该光学微结构。
其中， 该多个固定件为多个突起， 该多个定位件为开设在该出光本体的相 背且均与该入光面垂直的两侧的多个卡槽， 该多个突起卡合在对应的卡槽内而 使该导光板固定在背板中， 该多个卡槽均呈 U形， 该多个突起的截面均呈圓形， 该多个留白区均呈半圓环形， 每个留白区对应一个卡槽及一个突起， 每个留白 区与对应的卡槽正对， 每个留白区的外径大于对应的卡槽的最大宽度。
其中， 该多个固定件为多个突起， 该多个定位件为多个开设有卡槽的梯形 凸块， 该多个凸块自该出光本体的相背且均与该入光面垂直的两侧向外延伸， 该多个突起卡合在该多个卡槽内而使该导光板固定在背板中， 每两个留白区对 应一个突起及一个卡槽， 该两个留白区关于对应的卡槽对称分布， 该出光本体 位于该两个留白区之间的区域呈三角形， 该三角形的底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于 对应的卡槽的宽度， 该多个凸块上均设置有该光学微结构。
本发明所提供的背光模块、 导光板及导光板制造方法在出光主体上每个定 位件与对应的固定件配合处均设置有留白区， 在该出光主体上多个留白区之外 的区域设置有光学微结构， 以使到达留白区的光线会在导光板内发生全反射而 不会被导出， 避免漏光， 从显示的角度看不会出现喷射纹现象， 由此提高了背 光模块的品质。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地， 下面描述 中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付 出创造性劳动性的前提下， 还可以根据这些附图获得其他的附图。
图 1是本发明第一实施例提供的背光模块的平面示意图。
图 2是本发明第二实施例提供的背光模块的平面示意图。
图 3是本发明第三实施例提供的背光模块的平面示意图。
图 4是本发明第四实施例提供的背光模块的平面示意图。
图 5是本发明第五实施例提供的背光模块的平面示意图。
图 6是本发明第六实施例提供的背光模块的平面示意图。
图 7是本发明第七实施例提供的背光模块的平面示意图。 具体实施例
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
实施例一
请参阅图 1 , 本发明第一实施例提供的背光模块 10固定在背板 11中， 该背 板 11开设有四个作为固定件的卡槽 110。 本实施例中， 该四个卡槽 110均呈矩 形， 且该四个卡槽 110均匀分布在该背板 11相背的两侧。
该背光模块 10包括一个导光板 12及与该导光板 12相邻且间隔的光源组件
14。
该导光板 12包括一个入光面 122、一个反射面（图未示）、一个出光面 124、 一个第一侧面 126及一个第二侧面 128。该反射面与该出光面 124分别位于该导 光板 12相背的两侧， 且该反射面及该出光面 124均与该入光面 122相连接。 该 第一侧面 126与该第二侧面 128分别位于该导光板 12相背的两侧 , 且该第一侧 面 126与该第二侧面 128平行。 该第一侧面 126连接该反射面及该出光面 124。 该第二侧面 128也连接该反射面与该出光面 124。
该出光面 124包括一个出光本体 1240及设置在该出光本体 1240上的四个 作为定位件的突起 1242。该出光本体 1240呈矩形并对应为使用者观看到的显示 区域。 该四个突起 1242与该四个卡槽 110——对应。 即， 该四个突起 1242均 呈矩形并自该出光本体 1240向外延伸，其中，四个突起 1242中的两个突起 1242 与该第一侧面 126同侧， 四个突起 1242中剩余的两个突起 1242则与该第二侧 面 128同侧。 该四个突起 1242卡合在对应的卡槽 110中而使该导光板 12固定 在该背板 11上。
该出光本体 1240上每个突起 1242与对应的卡槽 110卡合的地方均设置有 留白区 1244, 该出光本体 1240上多个留白区 1244之外的区域设置有光学微结 构 1246。 留白区 1244为平板区， 即为不设置光学 结构 1246的区域。 本实施 例中， 该出光本体 1240上设置有四个留白区 1244, 每个留白区 1244均呈矩形， 每个留白区 1244对应一个卡槽 110及一个突起 1242, 每个留白区 1244与对应 的卡槽 110正对并与对应的突起 1242间隔。 每个留白区 1244的长度大于对应 的卡槽 110的宽度， 该四个突起 1242上均设置有该光学微结构 1246。 该光学微 结构 1246为多个在该出光面 124的长度方向上彼此平行的棱镜。 每个棱镜在垂 直该出光面 124 的方向上的截面呈三角形或者半圓形。 需要说明的是， 为了很 好地说明留白区 1244的形状及分布情况， 图 1 中留白区 1244的四周都画出了 实线， 实际这些实线都是不存在的， 以下其他实施例附图中的留白区也是如此 表达。
该光源组件 14包括一个电路板 142及设置在电路板 142上的多个发光二极 管 144。 该多个发光二极管 144彼此间隔并排列成一条直线。 每个发光二极管 144均包括一个发光面 146, 该光源组件 14位于该入光面 122所在的一侧， 且 使每个发光面 146与该入光面 122正对以将发出的光线从该入光面 122进入该 导光板 12中。 该多个发光二极管 144排列成的直线与该多个棱镜的长度方向垂 直。
工作时， 自该光源组件 14发出的光线通过该入光面 122进入该导光板 12 中， 并被该反射面、 该第一侧面 126及该第二侧面 128反射后自该出光面 124 出射。 当光线传播至该突起 1242与对应的卡槽 110卡合的地方时， 由于此处没 有设置光学微结构 1246而是制作成留白区 1244, 且到达留白区 1244的光线会 在导光板 12内发生全反射而不会被导出， 即留白区 1244不会漏光， 因此， 从 显示的角度看不会出现喷射纹现象， 由此提高了背光模块 10的品质。
可以理解， 突起 1242的数量及卡槽 110的数量并不局限于本实施例中的四 个， 可以是多个中的任意个数， 例如两个、 三个、 五个或六个等， 只要满足突 起 1242的数量与该卡槽 110的数量相同即可。 另外， 突起 1242及卡槽 110的 位置分布也不局限于本实施例中的位置分布， 突起 1242与卡槽 110可以任意分 布， 只要满足突起 1242与卡槽 110——对应， 且突起 1242与对应的卡槽 110 卡合后能将导光板 12固定在背板 11上。
该导光板 12的制造方法包括两种， 第一种： 首先， 由滚轮滚压出出光面布 满光学 结构 1246的初始导光板，初始导光板除了出光面布满光学 结构 1246, 而导光板 12的出光面 124上有留白区 1244这一区别之外， 该初始导光板的其 他结构与该导光板 12的其他结构完全相同； 然后， 使用平面金属治具， 该平面 金属治具的形状与即将形成的留白区 1244的形状相同， 将该平面金属治具加热 至 150度至 300度后紧贴在与即将形成留白区 1244的位置对应的光学微结构 1246上， 并放置一段时间直至该位置上的光学微结构 1246完全消除； 最后， 移 除该平面金属治具。 原本留白区 1244对应的光学微结构 1246受到热发生变形 加之平面金属治具的压力而被去除， 即可得到导光板 12。 第二种： 首先， 由滚 轮滚压出出光面布满光学微结构 1246的初始导光板， 初始导光板除了出光面布 满光学微结构 1246,而导光板 12的出光面 124上有留白区 1244这一区别之夕卜， 该初始导光板的其他结构与该导光板 12的其他结构完全相同； 然后， 釆用热风 枪， 将热风枪的温度调整至 150〜400度后对准即将形成留白区 1244的位置吹热 风， 吹风一段时间后， 原本留白区 1244对应的光学微结构 1246受到热发生变 形加之风的压力而被去除， 同样也可得到导光板 12。
实施例二
请参阅图 2, 本发明第二实施例提供的背光模块 20固定在背板 21中， 该背 板 21开设有四个作为固定件的卡槽 210。 本实施例中， 该四个卡槽 210均呈矩 形， 且该四个卡槽 210均勾分布在该背板 21相背的两侧。
该背光模块 20包括一个导光板 22及与该导光板 22相邻且间隔的光源组件
24。
该导光板 22包括一个入光面 222、一个反射面（图未示）、一个出光面 224、 一个第一侧面 226及一个第二侧面 228。该反射面与该出光面 224分别位于该导 光板 22相背的两侧， 且该反射面及该出光面 224均与该入光面 222相连接。 该 第一侧面 226与该第二侧面 228分别位于该导光板 22相背的两侧 , 且该第一侧 面 226与该第二侧面 228平行。 该第一侧面 226连接该反射面及该出光面 224。 该第二侧面 228也连接该反射面与该出光面 224。 该出光面 224包括一个出光本体 2240及设置在该出光本体 2240上的四个 作为定位件的突起 2242。该出光本体 2240呈矩形并对应为使用者观看到的显示 区域。 该四个突起 2242与该四个卡槽 210——对应。 即， 该四个突起 2242均 呈矩形并自该出光本体 2240向外延伸，其中，四个突起 2242中的两个突起 2242 与该第一侧面 226同侧， 四个突起 2242中剩余的两个突起 2242则与该第二侧 面 228同侧。 该四个突起 2242卡合在对应的卡槽 210中而使该导光板 22固定 在该背板 21上。
该出光本体 2240上每个突起 2242与对应的卡槽 210卡合的地方均设置有 留白区 2244, 该出光本体 2240上多个留白区 2244之外的区域设置有光学微结 构 2246。 留白区 2244为平板区， 即为不设置光学 结构 2246的区域。 本实施 例中， 该出光本体 2240上设置有八个留白区 2244 , 每个留白区 2244均呈四边 形，每两个留白区 2244对应一个卡槽 210及一个突起 2242,该两个留白区 2244 关于对应的突起 2242对称分布， 该出光本体 2240位于该两个留白区 2244之间 的区域包括一个与对应的突起 2242相接的第一梯形子区域 2247及与该第一梯 形子区域 2247接续的第二梯形子区域 2248。 其中， 该第一梯形子区域 2247与 对应的突起 2242相接的边为该梯形的长底边， 该第一梯形子区域 2247与该第 二梯形子区域 2248相接的边为该梯形的短底边。 该第二梯形子区域 224与该第 一梯形子区域 2247相接的边为该梯形的短底边。 该两个留白区 2244中一个留 白区 2244的最外侧到另一个留白区 2244的最外侧之间的距离大于对应的卡槽 210的宽度。该多个突起 2242上均设置有该光学微结构 2246。该光学微结构 2246 为多个在该出光面 224 的长度方向上彼此平行的棱镜。 每个棱镜在垂直该出光 面 224的方向上的截面呈三角形或者半圓形。
本实施例中的光源组件 24的结构及位置设置与第一实施例中的光源组件 14 完全相同， 在此不再赘述。 本实施例中的背光模块 20的工作原理及所具备的有 益效果与第一实施例中的背光模块 10 的工作原理及所具备的有益效果完全相 同， 在此不再赘述。 另外， 本实施例中的导光板 22的制造方法与第一实施中的 导光板 12的制造方法也完全相同， 在此也不再赘述。
实施例三
请参阅图 3 , 本发明第三实施例提供的背光模块 30固定在背板 31中， 该背 板 31开设有四个作为固定件的卡槽 310。 本实施例中， 该四个卡槽 310均呈矩 形， 且该四个卡槽 310均勾分布在该背板 31相背的两侧。
该背光模块 30包括一个导光板 32及与该导光板 32相邻且间隔的光源组件
34。
该导光板 32包括一个入光面 322、一个反射面（图未示）、一个出光面 324、 一个第一侧面 326及一个第二侧面 328。该反射面与该出光面 324分别位于该导 光板 32相背的两侧， 且该反射面及该出光面 324均与该入光面 322相连接。 该 第一侧面 326与该第二侧面 328分别位于该导光板 32相背的两侧， 且该第一侧 面 326与该第二侧面 328平行。 该第一侧面 326连接该反射面及该出光面 324。 该第二侧面 328也连接该反射面与该出光面 324。
该出光面 324包括一个出光本体 3240及设置在该出光本体 3240上的四个 作为定位件的突起 3242。该出光本体 3240呈矩形并对应为使用者观看到的显示 区域。 该四个突起 3242与该四个卡槽 310——对应。 即， 该四个突起 3242均 呈矩形并自该出光本体 3240向外延伸，其中，四个突起 3242中的两个突起 3242 与该第一侧面 326同侧， 四个突起 3242中剩余的两个突起 3242则与该第二侧 面 328同侧。 该四个突起 3242卡合在对应的卡槽 310中而使该导光板 32固定 在该背板 31上。
该出光本体 3240上每个突起 3242与对应的卡槽 310卡合的地方均设置有 留白区 3244, 该出光本体 3240上多个留白区 3244之外的区域设置有光学微结 构 3246。 留白区 3244为平板区， 即为不设置光学 结构 3246的区域。 本实施 例中， 该出光本体 3240上设置有八个留白区 3244, 每两个留白区 3244对应一 个卡槽 310及一个突起 3242, 该两个留白区 3244关于对应的突起 3242对称分 布， 该出光本体 3240位于该两个留白区 3244之间的区域呈三角形， 该三角形 的底边与对应的突起 3242相接。 该两个留白区 3244中一个留白区 3244的最外 侧到另一个留白区 3244的最外侧之间的距离大于对应的卡槽 310的宽度。 每个 突起 3242上均设置有该光学微结构 3246且设置有两个呈三角形的留白区 3247, 该两个留白区 3247与该两个留白区 3244分别相接。 该光学 结构 3246为多个 在该出光面 324 的长度方向上彼此平行的棱镜。 每个棱镜在垂直该出光面 324 的方向上的截面呈三角形或者半圓形。
本实施例中的光源组件 34的结构及位置设置与第一实施例中的光源组件 14 完全相同， 在此不再赘述。 本实施例中的背光模块 30的工作原理及所具备的有 益效果与第一实施例中的背光模块 10 的工作原理及所具备的有益效果完全相 同， 在此不再赘述。 另外， 本实施例中的导光板 32的制造方法与第一实施中的 导光板 12的制造方法也完全相同， 在此也不再赘述。
实施例四
请参阅图 4, 本发明第四实施例提供的背光模块 40固定在背板 41中， 该背 板 41开设有四个作为固定件的卡槽 410。 本实施例中， 该四个卡槽 410均呈梯 形， 且该四个卡槽 410均勾分布在该背板 41相背的两侧。
该背光模块 40包括一个导光板 42及与该导光板 42相邻且间隔的光源组件
44。
该导光板 42包括一个入光面 422、一个反射面（图未示）、一个出光面 424、 一个第一侧面 426及一个第二侧面 428。该反射面与该出光面 424分别位于该导 光板 42相背的两侧， 且该反射面及该出光面 424均与该入光面 422相连接。 该 第一侧面 426与该第二侧面 428分别位于该导光板 42相背的两侧 , 且该第一侧 面 426与该第二侧面 428平行。 该第一侧面 426连接该反射面及该出光面 424。 该第二侧面 428也连接该反射面与该出光面 424。
该出光面 424包括一个出光本体 4240及设置在该出光本体 4240上的四个 作为定位件的突起 4242。该出光本体 4240呈矩形并对应为使用者观看到的显示 区域。 该四个突起 4242与该四个卡槽 410——对应。 即， 该四个突起 4242均 呈梯形并自该出光本体 4240向外延伸，其中，四个突起 4242中的两个突起 4242 与该第一侧面 426同侧， 四个突起 4242中剩余的两个突起 4242则与该第二侧 面 428同侧。 该四个突起 4242卡合在对应的卡槽 410中而使该导光板 42固定 在该背板 41上。
该出光本体 4240上每个突起 4242与对应的卡槽 410卡合的地方均设置有 留白区 4244 , 该出光本体 4240上多个留白区 4244之外的区域设置有光学 结 构 4246。 留白区 4244为平板区， 即为不设置光学 结构 4246的区域。 本实施 例中， 该出光本体 4240上设置有八个留白区 4244 , 每两个留白区 4244对应一 个卡槽 410及一个突起 4242, 该两个留白区 4244关于对应的突起 4242对称分 布， 该出光本体 4240位于该两个留白区 4244之间的区域呈梯形， 该梯形的长 底边与对应的突起 4242相接。 该两个留白区 4244中一个留白区 4244的最外侧 到另一个留白区 4244的最外侧之间的距离大于对应的卡槽 410的最大宽度。 每 个突起 4242上均设置有该光学微结构 4246及两个呈三角形的留白区 4247, 该 两个留白区 4247与该两个留白区 4244分别相接。 该光学 结构 4246为多个在 该出光面 424的长度方向上彼此平行的棱镜。 每个棱镜在垂直该出光面 424的 方向上的截面呈三角形或者半圓形。
本实施例中的光源组件 44的结构及位置设置与第一实施例中的光源组件 14 完全相同， 在此不再赘述。 本实施例中的背光模块 40的工作原理及所具备的有 益效果与第一实施例中的背光模块 10 的工作原理及所具备的有益效果完全相 同， 在此不再赘述。 另外， 本实施例中的导光板 42的制造方法与第一实施中的 导光板 12的制造方法也完全相同， 在此也不再赘述。
实施例五
请参阅图 5 , 本发明第五实施例提供的背光模块 50固定在背板 51中， 该背 板 51包括四个作为固定件的突起 510。 本实施例中， 该四个突起 510的截面呈 圓形， 且该四个突起 510均匀分布在该背板 51相背的两侧。
该背光模块 50包括一个导光板 52及与该导光板 52相邻且间隔的光源组件
54。
该导光板 52包括一个入光面 522、一个反射面（图未示）、一个出光面 524、 一个第一侧面 526及一个第二侧面 528。该反射面与该出光面 524分别位于该导 光板 52相背的两侧， 且该反射面及该出光面 524均与该入光面 522相连接。 该 第一侧面 526与该第二侧面 528分别位于该导光板 52相背的两侧， 且该第一侧 面 526与该第二侧面 528平行。 该第一侧面 526连接该反射面及该出光面 524。 该第二侧面 528也连接该反射面与该出光面 524。
该出光面 524包括一个出光本体 5240及开设在该出光本体 5240上的四个 作为定位件的卡槽 5242。该出光本体 5240呈矩形并对应为使用者观看到的显示 区域。 该四个卡槽 5242与该四个突起 510——对应。 即， 该四个卡槽 5242均 呈 U形并自该出光本体 5240的侧边向内部凹陷， 其中， 四个卡槽 5242中的两 个卡槽 5242与该第一侧面 526同侧， 四个卡槽 5242中剩余的两个卡槽 5242则 与该第二侧面 528同侧。 该四个突起 510卡合在对应的卡槽 5242中而使该导光 板 52固定在该背板 51上。
该出光本体 5240上每个卡槽 5242与对应的突起 510配合的地方均设置有 半圓环形的留白区 5244, 该出光本体 5240上多个留白区 5244之外的区域设置 有光学微结构 5246。 留白区 5244为平板区， 即为不设置光学微结构 5246的区 域。本实施例中， 该出光本体 5240上设置有四个留白区 5244,每个留白区 5244 对应一个卡槽 5242及一个突起 510,每个留白区 5244与对应的卡槽 5242正对， 每个留白区 5244的外径大于对应的卡槽 5242的最大宽度。 该光学微结构 5246 为多个在该出光面 524 的长度方向上彼此平行的棱镜。 每个棱镜在垂直该出光 面 524的方向上的截面呈三角形或者半圓形。
本实施例中的光源组件 54的结构及位置设置与第一实施例中的光源组件 14 完全相同， 在此不再赘述。 本实施例中的背光模块 50的工作原理及所具备的有 益效果与第一实施例中的背光模块 10 的工作原理及所具备的有益效果完全相 同， 在此不再赘述。 另外， 本实施例中的导光板 52的制造方法与第一实施中的 导光板 12的制造方法也完全相同， 在此也不再赘述。
实施例六
请参阅图 6, 本发明第六实施例提供的背光模块 60固定在背板 61中， 该背 板 61包括四个作为固定件的突起 610。 本实施例中， 该四个突起 610的截面呈 矩形， 且该四个突起 610均匀分布在该背板 61相背的两侧。
该背光模块 60包括一个导光板 62及与该导光板 62相邻且间隔的光源组件
64。
该导光板 62包括一个入光面 622、一个反射面（图未示）、一个出光面 624、 一个第一侧面 626及一个第二侧面 628。该反射面与该出光面 624分别位于该导 光板 62相背的两侧， 且该反射面及该出光面 624均与该入光面 622相连接。 该 第一侧面 626与该第二侧面 628分别位于该导光板 62相背的两侧， 且该第一侧 面 626与该第二侧面 628平行。 该第一侧面 626连接该反射面及该出光面 624。 该第二侧面 628也连接该反射面与该出光面 624。
该出光面 624包括一个出光本体 6240及设置在该出光本体 6240上的四个 作为定位件的开设有卡槽 6243的梯形凸块 6242。 该出光本体 6240呈矩形并对 应为使用者观看到的显示区域。 该四个凸块 6242与该四个突起 610——对应。 该四个凸块 6242均呈梯形并自该出光本体 6240向外延伸，其中，四个凸块 6242 中的两个凸块 6242与该第一侧面 626同侧， 四个凸块 6242中剩余的两个凸块 6242则与该第二侧面 628同侧。该四个突起 610卡合在对应的卡槽 6243中而使 该导光板 62固定在该背板 61上。 该出光本体 6240上每个卡槽 6243与对应的突起 610配合的地方均设置有 留白区 6244, 该出光本体 6240上多个留白区 6244之外的区域设置有光学微结 构 6246。 留白区 6244为平板区， 即为不设置光学 结构 6246的区域。 本实施 例中， 该出光本体 6240上设置有八个留白区 6244 , 每两个留白区 6244对应一 个突起 610及一个卡槽 6243 , 该两个留白区 6244关于对应的卡槽 6243对称分 布， 该出光本体 6240位于该两个留白区 6244之间的区域呈三角形， 该三角形 的底边与对应的凸块 6242相接。 该两个留白区 6244中一个留白区 6244的最外 侧到另一个留白区 6244的最外侧之间的距离大于对应的卡槽 6243的宽度。 每 个凸块 6242 上均设置有该光学微结构 6246 且设置有两个呈三角形的留白区 6247, 该两个留白区 6247与该两个留白区 6244分别相接。 该光学 结构 6246 为多个在该出光面 624 的长度方向上彼此平行的棱镜。 每个棱镜在垂直该出光 面 624的方向上的截面呈三角形或者半圓形。
本实施例中的光源组件 64的结构及位置设置与第一实施例中的光源组件 14 完全相同， 在此不再赘述。 本实施例中的背光模块 60的工作原理及所具备的有 益效果与第一实施例中的背光模块 10 的工作原理及所具备的有益效果完全相 同， 在此不再赘述。 另外， 本实施例中的导光板 62的制造方法与第一实施中的 导光板 12的制造方法也完全相同， 在此也不再赘述。
实施例七
请参阅图 7, 本发明第七实施例提供的背光模块 70固定在背板 71中。 该背 板 71与第一实施例中的背板 11完全相同。 本实施例中的背光模块 70相较于实 施例一中的背光模块 10的区别在于： 背光模块 70是将第一实施例中的背光模 块 10的与入光面 122相对的面也设计成入光面 129, 然后再增加一个与第一实 施例中光源组件 14完全一样的光源组件 15。 该光源组件 15与该入光面 129正 对以向导光板中发出光线。 本实施例中的背光模块 70的工作原理及所具备的有 益效果具有与第一实施例中的背光模块 10完全相同的工作原理及有益效果， 而 且本实施例中的背光模块 70较背光模块 10能够应用在更大尺寸的显示装置中。 可以理解， 新设计入光面及新增光源组件还可以是针对第二至第六实施例中的 背光模块的。
以上所揭露的仅为本发明较佳实施例而已， 当然不能以此来限定本发明之 权利范围， 因此依本发明权利要求所作的等同变化， 仍属本发明所涵盖的范围。

Claims

权 利 要 求 书
1. 一种导光板， 固定在背板中， 该背板包括多个固定件， 该导光板包括入 光面、 与该入光面相连的反射面及与该反射面相对且与该入光面相连的出光面， 其中， 该出光面包括出光主体及设置在该出光主体上并与该多个固定件对应的 多个定位件， 该多个定位件与对应的固定件配合而使该导光板固定在背板中， 该出光主体上每个定位件与对应的固定件配合处均设置有留白区， 该出光主体 上多个留白区之外的区域设置有光学微结构。
2. 如权利要求 1所述的导光板， 其中， 该光学微结构为多个在该出光面的 长度方向上彼此平行的棱镜。
3. 如权利要求 2所述的导光板， 其中， 每个棱镜在垂直该出光面的方向上 的截面呈三角形或者半圓形。
4. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个卡槽， 该多个 定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合在对 应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突起均 呈矩形， 该多个留白区均呈矩形， 每个留白区对应一个卡槽及一个突起， 每个 留白区与对应的卡槽正对并与对应的突起间隔， 每个留白区的长度大于对应的 卡槽的宽度， 该多个突起上均设置有该光学微结构。
5. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个卡槽， 该多个 定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合在对 应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突起均 呈矩形， 该多个留白区均呈四边形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该两个留白区之间的 区域包括一个与对应的突起相接的第一梯形子区域及与该第一梯形子区域接续 的第二梯形子区域， 该两个留白区中一个留白区的最外侧到另一个留白区的最 外侧之间的距离大于对应的卡槽的宽度， 该多个突起上均设置有该光学微结构。
6. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个卡槽， 该多个 定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合在对 应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突起均 呈矩形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应的突 起对称分布， 该出光本体位于该两个留白区之间的区域呈三角形， 该三角形的 底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另一个留白区 的最外侧之间的距离大于对应的卡槽的宽度， 该多个突起上均设置有该光学微 结构。
7. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个卡槽， 该多个 定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合在对 应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈梯形， 该多个突起均 呈梯形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应的突 起对称分布， 该出光本体位于该两个留白区之间的区域呈梯形， 该两个留白区 中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的卡槽的 最大宽度， 该多个突起上均设置有该光学微结构。
8. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个突起， 该多个 定位件为开设在该出光本体的相背且均与该入光面垂直的两侧的多个卡槽， 该 多个突起卡合在对应的卡槽内而使该导光板固定在背板中， 该多个卡槽均呈 U 形， 该多个突起的截面均呈圓形， 该多个留白区均呈半圓环形， 每个留白区对 应一个卡槽及一个突起， 每个留白区与对应的卡槽正对， 每个留白区的外径大 于对应的卡槽的最大宽度。
9. 如权利要求 1所述的导光板， 其中， 该多个固定件为多个突起， 该多个 定位件为多个开设有卡槽的梯形凸块， 该多个凸块自该出光本体的相背且均与 该入光面垂直的两侧向外延伸， 该多个突起卡合在该多个卡槽内而使该导光板 固定在背板中， 每两个留白区对应一个突起及一个卡槽， 该两个留白区关于对 应的卡槽对称分布， 该出光本体位于该两个留白区之间的区域呈三角形， 该三 角形的底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另一个 留白区的最外侧之间的距离大于对应的卡槽的宽度， 该多个凸块上均设置有该 光学微结构。
10. 一种制造如权利要求 1所述的导光板的导光板制造方法包括以下步骤： 由滚轮滚压出出光面布满光学微结构的初始导光板， 该初始导光板包括入 光面、 与该入光面相连的反射面及与该反射面相对且与该入光面相连的出光面， 该出光面包括出光主体及设置在该出光主体上的多个定位件；
提供一种平面金属治具， 该平面金属治具的形状与即将形成的留白区的形 状相同； 及 将该平面金属治具加热后紧贴在与即将形成的留白区的位置对应的光学微 结构上直至该光学微结构消除后移除该平面金属治具。
11. 一种背光模块， 包括一个固定在背板中的导光板及一个与该导光板相邻 且间隔的光源组件， 该背板包括多个固定件， 该导光板包括入光面、 与该入光 面相连的反射面及与该反射面相对且与该入光面相连的出光面， 该出光面包括 出光主体及设置在该出光主体上并与该多个固定件对应的多个定位件， 该多个 定位件与对应的固定件配合而使该导光板固定在背板中， 该出光主体上每个定 位件与对应的固定件配合处均设置有留白区， 该出光主体上多个留白区之外的 区域设置有光学 T结构， 该光源组件与该入光面正对以朝该入光面发出光线。
12. 如权利要求 11所述的背光模块， 其中， 该光学微结构为多个在该出光 面的长度方向上彼此平行的棱镜。
13. 如权利要求 12所述的背光模块， 其中， 每个棱镜在垂直该出光面的方 向上的截面呈三角形或者半圓形。
14. 如权利要求 12所述的背光模块， 其中， 该光源组件包括一个电路板及 设置在该电路板上的多个发光二极管， 该多个发光二极管彼此间隔并排列成一 条直线， 该多个发光二极管与该入光面正对以使发出的光线从该入光面进入该 导光板中， 该多个发光二极管排列成的直线与该多个棱镜的长度方向垂直。
15. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个卡槽， 该 多个定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合 在对应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突 起均呈矩形， 该多个留白区均呈矩形， 每个留白区对应一个卡槽及一个突起， 每个留白区与对应的卡槽正对并与对应的突起间隔， 每个留白区的长度大于对 应的卡槽的宽度， 该多个突起上均设置有该光学微结构。
16. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个卡槽， 该 多个定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合 在对应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突 起均呈矩形， 该多个留白区均呈四边形， 每两个留白区对应一个卡槽及一个突 起， 该两个留白区关于对应的突起对称分布， 该出光本体位于该两个留白区之 间的区域包括一个与对应的突起相接的第一梯形子区域及与该第一梯形子区域 接续的第二梯形子区域， 该两个留白区中一个留白区的最外侧到另一个留白区 的最外侧之间的距离大于对应的卡槽的宽度， 该多个突起上均设置有该光学微 结构。
17. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个卡槽， 该 多个定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合 在对应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈矩形， 该多个突 起均呈矩形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应 的突起对称分布， 该出光本体位于该两个留白区之间的区域呈三角形， 该三角 形的底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另一个留 白区的最外侧之间的距离大于对应的卡槽的宽度， 该多个突起上均设置有该光 学微结构。
18. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个卡槽， 该 多个定位件为自该出光本体的相背两侧向外延伸的多个突起， 该多个突起卡合 在对应的卡槽内而使该导光板固定于背板中， 该多个卡槽均呈梯形， 该多个突 起均呈梯形， 每两个留白区对应一个卡槽及一个突起， 该两个留白区关于对应 的突起对称分布， 该出光本体位于该两个留白区之间的区域呈梯形， 该两个留 白区中一个留白区的最外侧到另一个留白区的最外侧之间的距离大于对应的卡 槽的最大宽度， 该多个突起上均设置有该光学微结构。
19. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个突起， 该 多个定位件为开设在该出光本体的相背且均与该入光面垂直的两侧的多个卡 槽， 该多个突起卡合在对应的卡槽内而使该导光板固定在背板中， 该多个卡槽 均呈 U形， 该多个突起的截面均呈圓形， 该多个留白区均呈半圓环形， 每个留 白区对应一个卡槽及一个突起， 每个留白区与对应的卡槽正对， 每个留白区的 外径大于对应的卡槽的最大宽度。
20. 如权利要求 11所述的背光模块， 其中， 该多个固定件为多个突起， 该 多个定位件为多个开设有卡槽的梯形凸块， 该多个凸块自该出光本体的相背且 均与该入光面垂直的两侧向外延伸， 该多个突起卡合在该多个卡槽内而使该导 光板固定在背板中， 每两个留白区对应一个突起及一个卡槽， 该两个留白区关 于对应的卡槽对称分布， 该出光本体位于该两个留白区之间的区域呈三角形， 该三角形的底边与对应的突起相接， 该两个留白区中一个留白区的最外侧到另 一个留白区的最外侧之间的距离大于对应的卡槽的宽度， 该多个凸块上均设置 有该光学微结构,
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