WO2018068198A1 - 导光板、背光模组及显示装置 - Google Patents

导光板、背光模组及显示装置 Download PDF

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Publication number
WO2018068198A1
WO2018068198A1 PCT/CN2016/101764 CN2016101764W WO2018068198A1 WO 2018068198 A1 WO2018068198 A1 WO 2018068198A1 CN 2016101764 W CN2016101764 W CN 2016101764W WO 2018068198 A1 WO2018068198 A1 WO 2018068198A1
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WO
WIPO (PCT)
Prior art keywords
strip
guide plate
light guide
incident surface
light
Prior art date
Application number
PCT/CN2016/101764
Other languages
English (en)
French (fr)
Inventor
张嘉尹
黄柏菖
林信伯
Original Assignee
瑞仪光电(苏州)有限公司
瑞仪光电股份有限公司
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 瑞仪光电(苏州)有限公司, 瑞仪光电股份有限公司 filed Critical 瑞仪光电(苏州)有限公司
Priority to PCT/CN2016/101764 priority Critical patent/WO2018068198A1/zh
Priority to JP2019519676A priority patent/JP6808031B2/ja
Priority to CN201680016211.1A priority patent/CN108235738B/zh
Priority to TW105136015A priority patent/TWI620965B/zh
Priority to US15/688,857 priority patent/US10185071B2/en
Publication of WO2018068198A1 publication Critical patent/WO2018068198A1/zh

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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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0028—Light guide, e.g. taper
    • 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
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • 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
    • 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
    • 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
    • G02B6/0045—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 by shaping at least a portion of the light guide
    • G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the invention relates to a light guiding component and an application thereof, and particularly to an application of a light guiding plate and a light guiding plate in a backlight module and a display device.
  • the known backlight module mainly comprises a light bar and a light guide plate.
  • the light bar includes a circuit board and a light emitting diode disposed on a surface of the circuit board.
  • the light guide plate is disposed beside the light emitting diode, and the light incident surface of the light guide plate is attached to the light emitting surface of the light emitting diode, thereby effectively utilizing the light of the light emitting diode.
  • the problem of bright band or uneven brightness is likely to occur in the portion of the light guide plate close to the light emitting diode, which seriously affects the optical appearance of the light guide plate.
  • a prismatic microstructure is usually provided on the light-emitting surface of the light guide plate, but the prismatic microstructure is easy to enhance the light directivity, thereby causing the light guide plate to appear bright and dark. problem.
  • an object of the present invention is to provide a light guide plate, a backlight module, and a display device, wherein the light guide plate has a strip-shaped microstructure design, which can improve the problem of uneven light emission of the light guide plate, thereby improving the overall backlight module. Uniformity with the appearance of the light output of the display device.
  • the light guide plate mainly comprises a main body, a plurality of first strip-shaped microstructures, a plurality of second strip-shaped microstructures and a plurality of third strip-shaped microstructures.
  • the body has a light incident surface and an optical surface that is connected to the light surface.
  • the optical surface has a first area and a second area, and the first area is closer to the light incident surface than the second area.
  • the first strip-shaped microstructure is disposed in the first region, and each of the first strip-like microstructures extends in a direction perpendicular to the light-incident surface.
  • a second strip-shaped microstructure is disposed in the second region, and each of the second strip-shaped microstructures extends in a direction perpendicular to the incident surface Stretch.
  • the width of one end of each of the second strip-shaped microstructures adjacent to the light incident surface is smaller than the width of the other end away from the light incident surface.
  • the third strip-like microstructure is disposed on a portion of the optical surface that is not provided with the first strip-shaped microstructure and the second strip-shaped microstructure.
  • the self-type of the first strip-shaped microstructure is different from the self-type of the second strip-shaped microstructure.
  • each of the third strip-like microstructures described above extends in a direction perpendicular to the light-incident surface.
  • the first region and the second region are arranged along a direction perpendicular to the light incident surface.
  • each of the second strip-shaped microstructures is a convex structure, and a height of one end of each of the second strip-shaped microstructures adjacent to the light incident surface is smaller than a distance from the other end of the light incident surface. the height of.
  • each of the second strip-shaped microstructures is a recessed structure, and a depth of each of the second strip-shaped microstructures adjacent to the light incident surface is smaller than a distance from the other end of the light incident surface. depth.
  • the body further includes a tapered portion and a flat portion.
  • the light incident surface is located on one side of the tapered portion, and the optical surface is located on the flat portion.
  • the first strip-shaped microstructures described above are continuously disposed to each other.
  • each of the first strip-shaped microstructures includes a strip portion and a tapered structure.
  • the tapered structure is connected to one end of the strip portion away from the light incident surface, and the width of the tapered structure gradually decreases from one end near the light incident surface to the other end away from the light incident surface.
  • each of the second strip-shaped microstructures described above includes a strip portion and a tapered structure.
  • the tapered structure is connected to one end of the strip portion close to the light incident surface, and the width of the tapered structure gradually increases from one end near the light incident surface to the other end away from the light incident surface.
  • the ends of the first strip-like microstructures form a first contour and the ends of the second strip-like microstructures form a second contour.
  • the first contour cooperates with the second contour to define a sector region.
  • the third strip-shaped microstructure includes a plurality of first structural units, one end of each of the first structural units is connected to the first strip-shaped microstructure, and the other end is connected to the second Strip microstructure.
  • the third strip-shaped microstructure comprises a plurality of second structural units, one end of each of the second structural units is connected to the first strip-shaped microstructure, and the other end is connected to the optical surface.
  • the side edge of the glossy surface is not limited to any one of the second structural units.
  • the third strip-shaped microstructure comprises a plurality of third structural units, one end of each of the third structural units is connected to the first side edge of the optical surface adjacent to the light incident surface, and the other end is connected The second side edge of the optical surface away from the light incident surface.
  • the third strip-shaped microstructure comprises a plurality of fourth structural units, one end of each of the fourth structural units is connected to a side edge of the optical surface adjacent to the light incident surface, and the other end is connected to the second side.
  • Strip microstructure one end of each of the fourth structural units is connected to a side edge of the optical surface adjacent to the light incident surface, and the other end is connected to the second side.
  • the third strip-shaped microstructure includes a plurality of fifth structural units, and one end of each of the fifth structural units is located on a first side edge and an optical surface of the optical surface adjacent to the light incident surface. It is away from the second side edge of the light incident surface, and the other end is connected to the second side edge.
  • the third strip-shaped microstructure comprises a plurality of sixth structural units, and one end of each of the sixth structural units is located on a first side edge and an optical surface of the optical surface adjacent to the light incident surface. It is away from the second side edge of the light incident surface, and the other end is connected to the second strip microstructure.
  • the backlight module comprises the aforementioned light guide plate and at least one light source.
  • the light source is adjacent to the light incident surface of the light guide plate.
  • a display device is further proposed.
  • the display device includes the aforementioned light guide plate, at least one light source, and a display panel.
  • the light source is adjacent to the light incident surface of the light guide plate.
  • the display panel is disposed in front of the light guide plate.
  • the present invention provides three different types of strip-shaped microstructures on the optical surface of the light guide plate, and changes in shape, height or depth, and arrangement of the strip-shaped microstructures.
  • the degree of light collection and the optical tendency of the light guide plate are changed, thereby improving the brightness and uniformity of the light guide plate.
  • FIG. 1 is a schematic diagram of an apparatus of a backlight module according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing a backlight module in accordance with a first embodiment of the present invention
  • FIG. 3 is a partial perspective view of a light guide plate according to a second embodiment of the present invention.
  • FIG. 4 is a partial perspective view of a light guide plate according to a third embodiment of the present invention.
  • FIG. 5 is a partial schematic view of a backlight module according to a fourth embodiment of the present invention.
  • FIG. 6 is a partial perspective view of a light guide plate according to a fifth embodiment of the present invention.
  • FIG. 7 is a partial perspective view showing a light guide plate according to a sixth embodiment of the present invention.
  • FIG. 8 is a schematic diagram of an apparatus for a display device according to an embodiment of the invention.
  • the backlight module 400 of the present embodiment mainly includes a light guide plate 500 and a light source 410, wherein the light source 410 is disposed at one side of the light guide plate 500.
  • the light guide plate 500 mainly includes a main body 510, a plurality of first strip-shaped microstructures 520, a plurality of second strip-shaped microstructures 530, and a plurality of third strip-shaped microstructures 540.
  • the first strip microstructure 520, the second strip microstructure 530, and the third strip microstructure 540 are all disposed on the body 510.
  • the first strip microstructure 520 is mainly used to effectively atomize the light leakage of the light guide plate 500 near the light entrance, thereby greatly improving the phenomenon of uneven brightness and darkness near the light entrance.
  • the second strip-shaped microstructure 530 has a function of controlling optical trends and can solve the problem of the light-emitting band of the light guide plate 500.
  • the third strip-shaped microstructure 540 is mainly used to enhance the brightness of the overall light guide plate 500 and to make the light output more uniform.
  • the main body 510 of the light guide plate 500 mainly includes a light incident surface 511 and an optical surface 512 connected to the light incident surface 511 .
  • the optical surface 512 has a first region 512a and a second The region 512b, and the first region 512a is closer to the light incident surface 511 than the second region 512b.
  • the first region 512a and the second region 512b are arranged along the direction D1, and the direction D1 refers to a direction perpendicular to the light incident surface 511.
  • the first strip-shaped microstructures 520 are disposed in the first region 512a, and each of the first strip-shaped microstructures 520 extends along the direction D1.
  • the second strip microstructures 530 are disposed in the second region 512b, and each of the second strip microstructures 530 also extends along the direction D1.
  • the inherent type of the first strip-shaped microstructure 520 is different from the self-type of the second strip-shaped microstructure 530.
  • the "self type” referred to herein refers to structural features of the first strip-shaped microstructure 520 and the second strip-shaped microstructure 530, such as structural shape and arrangement density, and the like.
  • each of the first strip-shaped microstructures 520 includes a strip portion 520a and a tapered structure 520b.
  • the tapered structure 520b of the first strip-shaped microstructure 520 is connected to one end of the strip-shaped portion 520a away from the light-incident surface 511, and the width of the tapered structure 520b is from an end close to the light-incident surface 511 to a distance from the light-incident surface 511. The other end is gradually reduced, and the strip portion 520a has a single width.
  • the entirety of each of the second strip-shaped microstructures 530 is also a tapered structure.
  • the width of one end of each of the second strip-shaped microstructures 530 adjacent to the light incident surface 511 is smaller than the width of the other end of the second strip-shaped microstructure 511.
  • the third strip-shaped microstructures 540 are disposed on the entire surface of the optical surface 512 where the first strip-shaped microstructures 520 and the second strip-shaped microstructures 530 are not disposed.
  • Each of the third strip-shaped microstructures 540 extends along the direction D1. Thereby, the light-emitting brightness of the light guide plate 500 can be increased by the third strip-shaped microstructure 540, and the light emitted from the light guide plate 500 can be made more uniform.
  • the first strip-shaped microstructures 520 are disposed continuously to each other, and the second strip-shaped microstructures 530 are also disposed continuously to each other.
  • the third strip microstructure 540 includes a plurality of first structural units 541. As shown in FIG. 1, one end of each of the first structural units 541 is connected to the first strip-shaped microstructure 520, and the other end is connected to the second strip-shaped microstructure 530. In the present embodiment, the third strip-shaped microstructure 540 is continuously disposed, but is not intended to limit the present invention. In other embodiments, the third strip microstructures 540 can also be discretely spaced apart.
  • FIG. 3 is a partial perspective view of a light guide plate according to a second embodiment of the present invention.
  • the structure of the light guide plate 600 shown in FIG. 3 is substantially the same as that of the light guide plate 500 shown in FIG. 1 and FIG. 2, except that the second strip-shaped microstructure 603 and the third strip-shaped microstructure 604 of the light guide plate 600 have the same. Different structural design. As shown in FIG.
  • each of the second strip-shaped microstructures 603 on the light guide plate 600 has a tapered structure, and the second strip-shaped microstructures 603 have a distance therebetween.
  • each of the second strip-shaped microstructures 603 includes a strip portion 603a and a tapered structure 603b.
  • the tapered structure 603b is connected to one end of the strip portion 603a adjacent to the light incident surface 511, and the width of the tapered structure 603b gradually increases from one end near the light incident surface 511 to the other end away from the light incident surface 511.
  • Portion 603a has a single width.
  • the third strip-shaped microstructure 604 includes a plurality of first structural units 604a and a plurality of second structural units 604b. One end of each of the first structural units 604a is connected to the first strip-shaped microstructure 520, and the other end is connected to the second strip-shaped microstructure 603. One end of each of the second structural units 604b is connected to the first strip-shaped microstructure 520, and the other end is connected to the side edge 512c of the optical surface 512 away from the light-incident surface 511.
  • the third strip-shaped microstructure 604 can also achieve the same effect as the third strip-shaped microstructure 540 as described above, and details are not described herein again.
  • the third strip-shaped microstructures 604 are continuously disposed. However, it is not intended to limit the invention. In other embodiments, the third strip-like microstructures 604 can also be discretely spaced apart.
  • FIG. 4 is a partial perspective view of a light guide plate according to a third embodiment of the present invention.
  • the structure of the light guide plate 610 shown in FIG. 4 is substantially the same as that of the light guide plate 500 shown in FIG. 1 and FIG. 2, and the difference is only in the first strip-shaped microstructure 612 and the second strip-shaped microstructure 613 of the light guide plate 610.
  • the three strip microstructures 614 have different structural designs. As shown in FIG. 4, the first strip-shaped microstructures 612 on the light guide plate 610 have a distance therebetween, and the second strip-shaped microstructures 613 also have a distance between them.
  • the third strip-shaped microstructure 614 includes a plurality of first structural units 614a, a plurality of third structural units 614b, and a plurality of fourth structural units 614c.
  • One end of each of the first structural units 614a is connected to the first strip-shaped microstructure 612, and the other end is connected to the second strip-shaped microstructure 613.
  • One end of each of the third structural units 614b is connected to the optical surface 512 close to The other side is connected to the side edge 512d of the light incident surface 511, and the other end is connected to the side edge 512c of the optical surface 512 away from the light incident surface 511.
  • each of the fourth structural units 614c is connected to the side edge 512d of the optical surface 512 near the light incident surface 511, and the other end is connected to the second strip microstructure 613.
  • the third strip-shaped microstructure 614 can also achieve the same effect as the third strip-shaped microstructure 540 as described above, and details are not described herein again.
  • the third strip-shaped microstructures 614 are arranged continuously, but are not intended to limit the invention. In other embodiments, the third strip microstructures 614 can also be spaced apart discontinuously.
  • FIG. 5 is a schematic diagram of a partial device of a backlight module according to a fourth embodiment of the present invention.
  • the backlight module 700 of the present embodiment mainly includes a light source 710 and a light guide plate 720.
  • the light source 710 is disposed on the light incident side of the light guide plate 720, and the light source 710 includes a circuit board 711 and a plurality of light emitting diodes 712 disposed on the circuit board 711.
  • the structure of the light guide plate 720 of the present embodiment is substantially the same as that of the light guide plate 500 shown in FIGS. 1 and 2, except that the second strip-shaped microstructure 723 of the light guide plate 720 is different from the third strip-shaped microstructure 724. Structural design.
  • each of the second strip-shaped microstructures 723 on the light guide plate 720 has a distance therebetween.
  • each of the second strip-shaped microstructures 723 includes a strip portion 723a and a tapered structure 723b.
  • the tapered structure 723b is connected to one end of the strip portion 723a adjacent to the light incident surface 511, and the width of the tapered structure 723b gradually increases from one end near the light incident surface 511 to the other end away from the light incident surface 511.
  • Portion 723a has a single width.
  • the light generated by the light-emitting diode 712 is incident on the light guide plate 720 in a divergent manner, so that the brightness of the position of the light-emitting diode 712 is stronger than the brightness of the position of the light-emitting diode 712. Therefore, in this embodiment, the distance between the second strip-shaped microstructure 723 of the light-emitting diode 712 and the light-incident surface 511 is smaller than the second strip-shaped microstructure 723 and the light-incident surface 111 of the light-emitting diode 712. The distance between them is such that a fan-shaped region is formed between the first strip-shaped microstructure 520 and the second strip-shaped microstructure 723.
  • the sector area is defined by the first contour A1 formed by the end of the first strip microstructure 520 and the second contour A2 formed by the end of the second strip microstructure 723.
  • the light emitted from the second strip-shaped microstructure 723 of the light-emitting diode 712 is never compared. More light is emitted from the second strip-shaped microstructure 723 of the light-emitting diode 712 to make the light-emitting brightness of the overall light guide plate 720 more uniform.
  • the third strip-shaped microstructure 724 includes a plurality of first structural units 724a and a plurality of second structural units 724b. One end of each of the first structural units 724a is connected to the first strip-shaped microstructure 520, and the other end is connected to the second strip-shaped microstructure 723. One end of each of the second structural units 724b is connected to the first strip-shaped microstructure 520, and the other end is connected to the side edge 512c of the optical surface 512 away from the light-incident surface 511.
  • the third strip-shaped microstructure 724 can also achieve the same effect as the third strip-shaped microstructure 540 as described above, and will not be described herein.
  • the third strip-shaped microstructure 724 is continuously disposed, but is not intended to limit the invention. In other embodiments, the third strip-shaped microstructures 724 can also be spaced apart discontinuously.
  • FIG. 6 is a partial perspective view of a light guide plate according to a fifth embodiment of the present invention.
  • the structure of the light guide plate 800 shown in FIG. 6 is substantially the same as the structure of the light guide plate 600 shown in FIG. 3, except that the third strip-shaped microstructures 704 of the light guide plate 800 have different structural designs.
  • the third strip-shaped microstructure 704 includes a plurality of fifth structural units 704a and a plurality of sixth structural units 704b.
  • One end of each of the fifth structural units 704a is located between the side edge 512d of the optical surface 512 near the light incident surface 511 and the side edge 512c of the optical surface 512 away from the light incident surface, and the other end is connected to the side edge 512c. That is, one end of the fifth structural unit 704a is not connected to the side edge 512d or the first strip-shaped microstructure 520, and the other end is connected to the side edge 512c. As shown in FIG.
  • each of the sixth structural units 704b is located between the side edge 512d of the optical surface 512 near the light incident surface 511 and the side edge 512c of the optical surface 512 away from the light incident surface, and the other end is connected to the second end.
  • the third strip-shaped microstructure 704 can also achieve the same effect as the third strip-shaped microstructure 604 as described above, and will not be described herein.
  • the third strip-shaped microstructure 704 is continuously disposed, but in other embodiments, the third strip-shaped microstructure 704 may also be discontinuous. Ground interval setting.
  • the form of the third strip-shaped microstructure is not limited to the type disclosed in the foregoing embodiment.
  • the third strip-shaped microstructure may include any combination of the first structural unit, the second structural unit, the third structural unit, the fourth structural unit, the fifth structural unit, and the sixth structural unit to conform to Different design needs.
  • terms such as “first”, “second”, “third”, “fourth”, “fifth”, and “sixth” are used in the description of the present invention, and are merely used to indicate the name of the component, not to indicate Order or quantity.
  • the body of the light guide plate may also be a flat plate having no uniform thickness.
  • FIG. 7 is a partial perspective view of a light guide plate according to a sixth embodiment of the present invention.
  • the structure of the light guide plate 900 of the present embodiment is substantially the same as that of the light guide plate 500 shown in FIG. 1 , and the difference is that the main body 910 of the light guide plate 900 is not a flat plate having a uniform thickness.
  • the light guide plate 900 mainly includes a main body 910 , a plurality of first strip-shaped microstructures 920 , a plurality of second strip-shaped microstructures 930 , and a plurality of third strip-shaped microstructures 940 .
  • the first strip microstructure 920, the second strip microstructure 930, and the third strip microstructure 940 are all disposed on the body 910.
  • the main body 910 further includes a tapered portion 910a and a flat plate portion 910b.
  • the main body 910 has a light incident surface 911 and an optical surface 912, and the light incident surface 911 is located on one side of the tapered portion 910a, and the optical surface 912 is located on the flat surface portion 910b.
  • the thickness of the tapered portion 910a near the light incident surface 911 is greater than the thickness of the light incident surface 911.
  • the first strip microstructure 920, the second strip microstructure 930, and the third strip microstructure 940 are disposed on the optical surface 912. It should be noted that the first strip-shaped microstructure 920, the second strip-shaped microstructure 930, and the third strip-shaped microstructure 940 of the present embodiment are designed in the same manner as the first strip-shaped microstructures 520 and 612 and the second.
  • the strip microstructures 530, 603, 613, and 723 and the third strip microstructures 540, 604, 614, 704, and 724 are the same, and thus will not be described again.
  • the second strip-shaped microstructures 530, 603, 613, 723, and 930 are convex structures, and each of the second strip-shaped microstructures 530, 603, 613, 723, and 930
  • the height near one end of the light incident surface 511 is smaller than the height away from the other end of the light incident surface 511.
  • each of the second strip-shaped microstructures may also be a recessed structure, and the depth of one end of each of the second strip-shaped microstructures near the light incident surface is smaller than the depth of the other end of the light incident surface.
  • FIG. 8 is a schematic diagram of an apparatus for a display device according to an embodiment of the invention.
  • the display device 1000 of the present embodiment includes a backlight module 400 and a display panel 1100 as shown in FIGS. 1 and 2 .
  • the display panel 1100 is disposed in front of the light guide plate 500 of the backlight module 400 , and the same purpose as described above can be achieved, and thus no further details are provided herein.
  • the embodiment of the present application applies the backlight module 400 with the light guide plate 500 shown in FIG. 1 to the display device 1100 for illustrative purposes only, and is not intended to limit the present invention.
  • the light guide plates (for example, the light guide plates 500, 600, 610, 720, 800, and 900) of the other embodiments described above can also be applied to a display device to produce the same effect.
  • the present invention provides three different types of strip-shaped microstructures on the optical surface of the light guide plate, and changes in shape, height or depth, and arrangement of the strip-shaped microstructures. In this way, the degree of light collection and the optical tendency of the light guide plate are changed, thereby improving the brightness and uniformity of the light guide plate.

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Abstract

一种导光板、背光模组及显示装置。此导光板包含主体、多个第一条状微结构、多个第二条状微结构及多个第三条状微结构。主体具有入光面及连接入光面的光学面。光学面具有第一区及第二区，第一区比第二区更靠近入光面。第一条状微结构设在第一区中，每一个第一条状微结构沿着垂直于入光面的方向延伸。第二条状微结构设在第二区中，每一个第二条状微结构沿着该方向延伸。每一个第二条状微结构的靠近入光面的一端的宽度小于远离入光面的另一端的宽度。第三条状微结构布设于光学面的未设置第一条状微结构与第二条状微结构的部分或全部区域。

Description

导光板、背光模组及显示装置 技术领域
本发明涉及导光组件及其应用，且特别涉及一种导光板与导光板在背光模组及显示装置的应用。
背景技术
公知的背光模组主要包含灯条以及导光板。灯条包含电路板以及设置在电路板的表面上的发光二极管。其中，导光板设置在发光二极管旁，且导光板的入光面贴合发光二极管的出光面，由此可有效地利用发光二极管的光线。然而，由于导光板的入光面贴合发光二极管的出光面，故在导光板的靠近发光二极管的部分容易出现亮带或亮度不均的问题，而严重影响导光板的光学外观。
另一方面，为了使经过导光板内部的光源能够更均匀地混合，通常会在导光板的出光面设置棱柱微结构，但棱柱微结构容易增强光指向性，从而导致导光板出现亮暗纹的问题。
发明内容
因此，本发明的目的在于提供一种导光板、背光模组及显示装置，其中导光板上具有条状微结构设计，其可改善导光板的出光不均的问题，进而可提升整体背光模组与显示装置的出光外观的均匀性。
根据本发明的上述目的，提出一种导光板。此导光板主要包含主体、多个第一条状微结构、多个第二条状微结构以及多个第三条状微结构。主体具有入光面以及连接入光面的光学面。其中，光学面具有第一区及第二区，且第一区比第二区更靠近入光面。第一条状微结构设置在第一区中，且每一个第一条状微结构沿着垂直于入光面的方向延伸。第二条状微结构设置在第二区中，且每一个第二条状微结构沿着垂直于入光面的方向延 伸。每一个第二条状微结构的靠近入光面的一端的宽度小于远离入光面的另一端的宽度。第三条状微结构布设于光学面的未设置第一条状微结构与第二条状微结构的一部分区域或全部区域。
依据本发明的实施例，上述的第一条状微结构的本身型态不同于第二条状微结构的本身型态。
依据本发明的另一实施例，上述的每一个第三条状微结构沿着垂直于入光面的方向延伸。
依据本发明的又一实施例，上述的第一区与第二区沿着垂直于入光面的方向排列。
依据本发明的再一实施例，上述的每一个第二条状微结构为凸状结构，且每一个第二条状微结构的靠近入光面的一端的高度小于远离入光面的另一端的高度。
依据本发明的再一实施例，上述的每一个第二条状微结构为凹陷结构，且每一个第二条状微结构的靠近入光面的一端的深度小于远离入光面的另一端的深度。
依据本发明的再一实施例，上述的主体还包含渐缩部以及平板部。其中，入光面位于渐缩部的一侧，光学面位于平板部上。
依据本发明的再一实施例，上述的第一条状微结构彼此连续地设置。
依据本发明的再一实施例，上述的每一个第一条状微结构包含条状部以及渐缩结构。其中，渐缩结构连接于条状部的远离入光面的一端，且渐缩结构的宽度从靠近入光面的一端到远离入光面的另一端逐渐减少。
依据本发明的再一实施例，上述的每一个第二条状微结构包含条状部以及渐缩结构。其中，渐缩结构连接于条状部的靠近入光面的一端，且渐缩结构的宽度从靠近入光面的一端到远离入光面的另一端逐渐增加。
依据本发明的再一实施例，上述的第一条状微结构的末端形成第一轮廓，第二条状微结构的末端形成第二轮廓。第一轮廓与第二轮廓相配合而界定出扇形区域。
依据本发明的再一实施例，上述的第三条状微结构包含多个第一结构单元，每一个第一结构单元的一端连接第一条状微结构，另一端连接第二 条状微结构。
依据本发明的再一实施例，上述的第三条状微结构包含多个第二结构单元，每一个第二结构单元的一端连接第一条状微结构，另一端连接至光学面的远离入光面的侧缘。
依据本发明的再一实施例，上述的第三条状微结构包含多个第三结构单元，每一个第三结构单元的一端连接光学面的靠近入光面的第一侧缘，另一端连接光学面的远离入光面的第二侧缘。
依据本发明的再一实施例，上述的第三条状微结构包含多个第四结构单元，每一个第四结构单元的一端连接光学面的靠近入光面的侧缘，另一端连接第二条状微结构。
依据本发明的再一实施例，上述的第三条状微结构包含多个第五结构单元，每一个第五结构单元的一端位于光学面的靠近入光面的第一侧缘与光学面的远离入光面的第二侧缘之间，另一端连接至第二侧缘。
依据本发明的再一实施例，上述的第三条状微结构包含多个第六结构单元，每一个第六结构单元的一端位于光学面的靠近入光面的第一侧缘与光学面的远离入光面的第二侧缘之间，另一端连接第二条状微结构。
据本发明的上述目的，另提出一种背光模组。此背光模组包含前述的导光板以及至少一个光源。光源邻设于导光板的入光面。
根据本发明的上述目的，另提出一种显示装置。此显示装置包含前述的导光板、至少一个光源以及显示面板。光源邻设于导光板的入光面。显示面板设置在导光板的前方。
由上述本发明可知，本发明是在导光板的光学面上同时设置三种不同型态的条状微结构，并且通过这些条状微结构的形状变化、高度或深浅变化、以及排列方式，来改变导光板的集光程度及光学趋势，进而可提高导光板的辉度及出光均齐度。
附图说明
为了更完整地了解实施例及其优点，现参照结合附图所做的下列描述，其中：
图1是绘示依照本发明的第一实施方式的一种背光模组的装置示意图；
图2是绘示依照本发明的第一实施方式的一种背光模组的剖面示意图；
图3是绘示依照本发明的第二实施方式的一种导光板的局部立体示意图；
图4是绘示依照本发明的第三实施方式的一种导光板的局部立体示意图；
图5是绘示依照本发明的第四实施方式的一种背光模组的局部装置示意图；
图6是绘示依照本发明的第五实施方式的一种导光板的局部立体示意图；
图7是绘示依照本发明的第六实施方式的一种导光板的局部立体示意图；以及
图8是绘示依照本发明的实施方式的一种显示装置的装置示意图。
具体实施方式
请同时参照图1及图2，其是分别绘示依照本发明的第一实施方式的一种背光模组的装置示意图以及剖面示意图。本实施方式的背光模组400主要包含导光板500以及光源410，其中光源410设置在导光板500的一侧。导光板500主要包含主体510、多个第一条状微结构520、多个第二条状微结构530以及多个第三条状微结构540。第一条状微结构520、第二条状微结构530以及第三条状微结构540均设置在主体510上。第一条状微结构520主要用于有效雾化导光板500靠近入光处的漏光，从而可大幅改善靠近入光处亮暗不均的现象。第二条状微结构530具有控制光学趋势的功能，并可解决导光板500的出光亮带的问题。第三条状微结构540主要用于提升整体导光板500的出光亮度，并使出光更均匀。
如图2所示，导光板500的主体510主要包含入光面511以及连接入光面511的光学面512。如图1所示，光学面512具有第一区512a及第二 区512b，且第一区512a比第二区512b更靠近入光面511。在本实施例中，第一区512a及第二区512b沿着方向D1排列，且方向D1指垂直于入光面511的方向。如图1及图2所示，第一条状微结构520设置在第一区512a中，且每一个第一条状微结构520沿着方向D1延伸。第二条状微结构530设置在第二区512b中，且每一个第二条状微结构530同样沿着方向D1延伸。在本实施例中，第一条状微结构520的本身型态(inherent type)不同于第二条状微结构530的本身型态。在此所指的“本身型态”指第一条状微结构520与第二条状微结构530的结构特征，例如结构形状与排列密度等。
请继续参照图1及图2，每一个第一条状微结构520包含条状部520a以及渐缩结构520b。其中，第一条状微结构520的渐缩结构520b连接于条状部520a的远离入光面511的一端，且渐缩结构520b的宽度从靠近入光面511的一端到远离入光面511的另一端逐渐减少，条状部520a则具有单一宽度。另一方面，每一个第二条状微结构530的整体同样为渐缩结构。每一个第二条状微结构530的靠近入光面511的一端的宽度小于远离入光面511的另一端的宽度。由此，通过第一条状微结构520可混合导光板500的靠近入光面511的漏光，而第二条状微结构530则可使光学面512的靠近入光面511的部分的出光亮度与光学面512的远离入光面511的部分的出光亮度一致。
请再次参照图1及图2，在本实施例中，第三条状微结构540布设于光学面512的未设置第一条状微结构520与第二条状微结构530的全部区域。每一个第三条状微结构540沿着方向D1延伸。由此，通过第三条状微结构540可增加导光板500的出光亮度，并使导光板500的出光更均匀。在本实施例中，第一条状微结构520彼此连续地设置，且第二条状微结构530也彼此连续地设置。第三条状微结构540包含多个第一结构单元541。如图1所示，每一个第一结构单元541的一端连接第一条状微结构520，另一端连接第二条状微结构530。在本实施例中，第三条状微结构540为连续设置，但并非用于限制本发明。在其他实施例中，第三条状微结构540也可为不连续地间隔设置。
在本发明中，第三条状微结构也可依据第一条状微结构与第二条状微结构的排列方式或结构形状不同而有不同的设计。请参照图3所示，图3是绘示依照本发明的第二实施方式的一种导光板的局部立体示意图。图3所示的导光板600的结构与图1及图2所示的导光板500的结构大致相同，差异仅在于导光板600的第二条状微结构603与第三条状微结构604具有不同的结构设计。如图3所示，导光板600上的每一个第二条状微结构603的一部分为渐缩结构，且第二条状微结构603之间具有一段距离。此外，每一个第二条状微结构603包含条状部603a以及渐缩结构603b。其中，渐缩结构603b连接于条状部603a的靠近入光面511的一端，且渐缩结构603b的宽度从靠近入光面511的一端到远离入光面511的另一端逐渐增加，条状部603a则具有单一宽度。
请继续参照图3，在本实施例中，第三条状微结构604包含多个第一结构单元604a以及多个第二结构单元604b。每一个第一结构单元604a的一端连接第一条状微结构520，另一端连接第二条状微结构603。每一个第二结构单元604b的一端连接第一条状微结构520，另一端连接至光学面512的远离入光面511的侧缘512c。由此，第三条状微结构604同样可达到与如前述第三条状微结构540相同的效果，于此不再赘述。此外，在本实施例中，第三条状微结构604为连续设置。但并非用于限制本发明。在其他实施例中，第三条状微结构604也可为不连续地间隔设置。
另请参照图4，其是绘示依照本发明的第三实施方式的一种导光板的局部立体示意图。图4所示的导光板610的结构与图1及图2所示的导光板500结构大致相同，差异仅在于导光板610的第一条状微结构612、第二条状微结构613与第三条状微结构614具有不同的结构设计。如图4所示，导光板610上的第一条状微结构612之间具有一段距离，第二条状微结构613之间同样具有一段距离。
请继续参照图4，在本实施例中，第三条状微结构614包含多个第一结构单元614a、多个第三结构单元614b以及多个第四结构单元614c。每一个第一结构单元614a的一端连接第一条状微结构612，另一端连接第二条状微结构613。每一个第三结构单元614b的一端连接光学面的512靠近 入光面511的侧缘512d，另一端连接光学面512的远离入光面511的侧缘512c。每一个第四结构单元614c的一端连接光学面512的靠近入光面511的侧缘512d，另一端连接第二条状微结构613。由此，第三条状微结构614同样可达到与如前述第三条状微结构540相同的效果，于此不再赘述。同样地，在本实施例中，第三条状微结构614为连续设置，但并非用于限制本发明。在其他实施例中，第三条状微结构614也可为不连续地间隔设置。
需要说明的是，在前述的实施例中，每一个第二条状微结构与入光面的距离均相同。在其他实施例中，每一个第二条状微结构与入光面之间的距离也可依据光源所产生的光形而设计。另请参照图5，其是绘示依照本发明的第四实施方式的一种背光模组的局部装置示意图。本实施方式的背光模组700主要包含光源710以及导光板720。光源710设置在导光板720的入光侧，且光源710包含电路板711以及设置在电路板711上的多个发光二极管712。本实施方式的导光板720的结构与图1及图2所示的导光板500结构大致相同，差异仅在于导光板720的第二条状微结构723与第三条状微结构724具有不同的结构设计。
如图5所示，导光板720上的第二条状微结构723之间具有一段距离。此外，每一个第二条状微结构723包含条状部723a以及渐缩结构723b。其中，渐缩结构723b连接于条状部723a的靠近入光面511的一端，且渐缩结构723b的宽度从靠近入光面511的一端到远离入光面511的另一端逐渐增加，条状部723a则具有单一宽度。在本实施例中，发光二极管712所产生的光线以发散的方式射入导光板720中，故正对发光二极管712位置的亮度比未正对发光二极管712位置的亮度强。因此，在本实施例中，正对发光二极管712的第二条状微结构723与入光面511之间的距离比未正对发光二极管712的第二条状微结构723与入光面111之间的距离远，使得第一条状微结构520与第二条状微结构723之间形成扇形区域。也就是说，此扇形区域由第一条状微结构520的末端所形成的第一轮廓A1与第二条状微结构723的末端所形成的第二轮廓A2所共同定义出。由此，从未正对发光二极管712的第二条状微结构723所射出的光线会比 从正对发光二极管712的第二条状微结构723所射出的光线还多，以使整体导光板720的出光亮度更均一。
请继续参照图5，在本实施例中，第三条状微结构724包含多个第一结构单元724a以及多个第二结构单元724b。每一个第一结构单元724a的一端连接第一条状微结构520，另一端连接第二条状微结构723。每一个第二结构单元724b的一端连接第一条状微结构520，另一端连接至光学面512的远离入光面511的侧缘512c。由此，第三条状微结构724同样可达到与如前述第三条状微结构540相同的效果，于此不再赘述。同样地，在本实施例中，第三条状微结构724为连续设置，但并非用于限制本发明。在其他实施例中，第三条状微结构724也可为不连续地间隔设置。
需要说明的是，前述实施例的第三条状微结构布设于光学面的未设置第一条状微结构与第二条状微结构的全部区域，并非用于限制本发明。在其他实施例中，第三条状微结构也可仅布设于光学面的未设置第一条状微结构与第二条状微结构的部分区域。如图6所示，图6是绘示依照本发明的第五实施方式的一种导光板的局部立体示意图。图6所示的导光板800的结构与图3所示的导光板600结构大致相同，差异仅在于导光板800的第三条状微结构704具有不同的结构设计。
请继续参照图6，在本实施例中，第三条状微结构704包含多个第五结构单元704a以及多个第六结构单元704b。每一个第五结构单元704a的一端位于光学面512的靠近入光面511的侧缘512d与光学面512的远离入光面的侧缘512c之间，另一端连接至侧缘512c。也就是说，第五结构单元704a的一端并未连接侧缘512d或第一条状微结构520，另一端连接侧缘512c。如图6所示，每一个第六结构单元704b的一端位于光学面512的靠近入光面511的侧缘512d与光学面512的远离入光面的侧缘512c之间，另一端连接第二条状微结构603。也就是说，第六结构单元704b的一端并未连接侧缘512d或第一条状微结构520，另一端连接第二条状微结构603。由此，第三条状微结构704同样可达到与如前述第三条状微结构604相同的效果，于此不再赘述。同样地，在本实施例中，第三条状微结构704为连续设置，但在其他实施例中，第三条状微结构704也可为不连续 地间隔设置。
需要说明的是，第三条状微结构的型态并不限于前述实施例所公开的型态。在不同的实施例中，第三条状微结构可包含第一结构单元、第二结构单元、第三结构单元、第四结构单元、第五结构单元及第六结构单元的任意组合，以符合不同的设计需求。此外，本发明说明书中使用如“第一”、“第二”、“第三”、“第四”、“第五”及“第六”等用语，仅用来表示组件的名称，并非表示顺序或数量。
在本发明中，导光板的主体也可为不具有均匀厚度的平板。另请参照图7，其是绘示依照本发明的第六实施方式的一种导光板的局部立体示意图。本实施方式的导光板900的结构与图1所示的导光板500的结构大致相同，二者的差异在于导光板900的主体910并非具有均匀厚度的平板。
如图7所示，导光板900主要包含主体910、多个第一条状微结构920、多个第二条状微结构930以及多个第三条状微结构940。第一条状微结构920、第二条状微结构930以及第三条状微结构940均设置在主体910上。在本实施例中，主体910还包含渐缩部910a以及平板部910b。其中，主体910具有入光面911及光学面912，且入光面911位于渐缩部910a的一侧，光学面912位于平板部910b上。此外，渐缩部910a的靠近入光面911的厚度大于远离入光面911的厚度。在本实施例中，第一条状微结构920、第二条状微结构930以及第三条状微结构940设置在光学面912上。需要说明的是，本实施方式的第一条状微结构920、第二条状微结构930以及第三条状微结构940的设计方式与前述的第一条状微结构520及612、第二条状微结构530、603、613及723以及第三条状微结构540、604、614、704及724相同，故于此不再赘述。
需要说明的是，在前述实施例中，第二条状微结构530、603、613、723及930为凸状结构，且每一个第二条状微结构530、603、613、723及930的靠近入光面511的一端的高度小于远离入光面511的另一端的高度。在其他实施例中，每一个第二条状微结构也可为凹陷结构，且每一个第二条状微结构的靠近入光面的一端的深度小于远离入光面的另一端的深度。
另请参照图8，其是绘示依照本发明的实施方式的一种显示装置的装置示意图。本实施方式的显示装置1000包含如图1及图2所示的背光模组400以及显示面板1100。如图8所示，显示面板1100设置在背光模组400的导光板500的前方，可达到与前述相同的目的，故在此不再赘述。需要说明的是，本申请的实施例将图1所示的具有导光板500的背光模组400应用于显示装置1100中仅用来作为示范说明，并非用于限制本发明。前述其他实施例的导光板(例如导光板500、600、610、720、800及900)也可应用于显示装置中，以产生同样的效果。
由上述本发明的实施方式可知，本发明是在导光板的光学面上同时设置三种不同型态的条状微结构，并且通过这些条状微结构的形状变化、高度或深浅变化、以及排列方式，来改变导光板的集光程度及光学趋势，进而可提高导光板的辉度及出光均齐度。
虽然本发明已经通过实施例进行如上公开，然而其并非用于限定本发明，本领域的技术人员在不脱离本发明的精神和范围内，应当可以作出一些更动与润饰，故本发明的保护范围应当以所附权利要求所限定的范围为准。
【附图标记】
400   背光模组
410   光源
500   导光板
510   主体
511   入光面
512   光学面
512a  第一区
512b  第二区
512c  侧缘
512d  侧缘
520   第一条状微结构
520a  条状部
520b  渐缩结构
530   第二条状微结构
540   第三条状微结构
541   第一结构单元
600   导光板
603   第二条状微结构
603a  条状部
603b  渐缩结构
604   第三条状微结构
604a  第一结构单元
604b  第二结构单元
610   导光板
612   第一条状微结构
613   第二条状微结构
614   第三条状微结构
614a  第一结构单元
614b  第三结构单元
614c  第四结构单元
700   背光模组
704   第三条状微结构
704a  第五结构单元
704b  第六结构单元
710   光源
711   电路板
712   发光二极管
720   导光板
723   第二条状微结构
723a  条状部
723b  渐缩结构
724   第三条状微结构
724a  第一结构单元
724b  第二结构单元
800   导光板
900   导光板
910   主体
910a  渐缩部
910b  平板部
911   入光面
912   光学面
920   第一条状微结构
930   第二条状微结构
940   第三条状微结构
1000  显示装置
1100  显示面板
A1    第一轮廓
A2    第二轮廓
D1    方向

Claims (19)

  1. 一种导光板，其包含：
    主体，其具有入光面以及连接所述入光面的光学面，其中所述光学面具有第一区及第二区，且所述第一区比所述第二区更靠近所述入光面；
    多个第一条状微结构，其设置在所述第一区中，且所述多个第一条状微结构的每一者沿着垂直于所述入光面的方向延伸；
    多个第二条状微结构，其设置在所述第二区中，且所述多个第二条状微结构的每一者沿着所述方向延伸，所述多个第二条状微结构的每一者的靠近所述入光面的一端的宽度小于远离所述入光面的另一端的宽度；以及
    多个第三条状微结构，其布设于所述光学面的未设置所述多个第一条状微结构与所述多个第二条状微结构的一部分区域或全部区域。
  2. 如权利要求1所述的导光板，其中，所述多个第一条状微结构的本身型态不同于所述多个第二条状微结构的本身型态。
  3. 如权利要求1所述的导光板，其中所述多个第三条状微结构的每一者沿着所述方向延伸。
  4. 如权利要求1所述的导光板，其中所述第一区与所述第二区沿着所述方向排列。
  5. 如权利要求1所述的导光板，其中所述多个第二条状微结构的每一者为凸状结构，且所述多个第二条状微结构的每一者的靠近所述入光面的一端的高度小于远离所述入光面的另一端的高度。
  6. 如权利要求1所述的导光板，其中所述多个第二条状微结构的每一者为凹陷结构，且所述多个第二条状微结构的每一者的靠近所述入光面的一端的深度小于远离所述入光面的另一端的深度。
  7. 如权利要求1所述的导光板，其中所述主体还包含渐缩部以及平板部，其中所述入光面位于所述渐缩部的一侧，所述光学面位于所述平板部上。
  8. 如权利要求1至7中任一项所述的导光板，其中，所述多个第一条状微结构的每一者彼此连续地设置。
  9. 如权利要求1至7中任一项所述的导光板，其中，所述多个第一条状微结构的每一者包含条状部以及渐缩结构，其中所述渐缩结构连接于所述条状部的远离所述入光面的一端，且所述渐缩结构的宽度从靠近所述入光面的一端到远离所述入光面的另一端逐渐减少。
  10. 如权利要求1至7中任一项所述的导光板，其中，所述多个第二条状微结构的每一者包含条状部以及渐缩结构，其中所述渐缩结构连接于所述条状部的靠近所述入光面的一端，且所述渐缩结构的宽度从靠近所述入光面的一端到远离所述入光面的另一端逐渐增加。
  11. 如权利要求1至7中任一项所述的导光板，其中，所述多个第一条状微结构的末端形成第一轮廓，所述多个第二条状微结构的末端形成第二轮廓，所述第一轮廓与所述第二轮廓相配合而界定出扇形区域。
  12. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第一结构单元，所述多个第一结构单元的每一者的一端连接所述多个第一条状微结构，另一端连接所述多个第二条状微结构。
  13. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第二结构单元，所述多个第二结构单元的每一者的一端连接所述第一条状微结构，另一端连接至所述光学面的远离所述入光面的侧缘。
  14. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第三结构单元，所述多个第三结构单元的每一者的一端连接所述光学面的靠近所述入光面的第一侧缘，另一端连接所述光学面的远离所述入光面的第二侧缘。
  15. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第四结构单元，所述多个第四结构单元的每一者的一端连接所述光学面的靠近所述入光面的侧缘，另一端连接所述多个第二条状微结构。
  16. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第五结构单元，所述多个第五结构单元的每一者的一端位于所述光学面的靠近所述入光面的第一侧缘与所述光学面的远离所述 入光面的第二侧缘之间，另一端连接至所述第二侧缘。
  17. 如权利要求1至7中任一项所述的导光板，其中，所述多个第三条状微结构包含多个第六结构单元，所述多个第六结构单元的每一者的一端位于所述光学面的靠近所述入光面的第一侧缘与所述光学面的远离所述入光面的第二侧缘之间，另一端连接所述多个第二条状微结构。
  18. 一种背光模组，其包含：
    如权利要求1所述的导光板；以及
    至少一个光源，其邻设于所述导光板的入光面。
  19. 一种显示装置，其包含：
    如权利要求1所述的导光板；
    至少一个光源，其邻设于所述导光板的入光面；以及
    显示面板，其设置在所述导光板的前方。
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