WO2017197696A1 - 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
WO2017197696A1
WO2017197696A1 PCT/CN2016/086224 CN2016086224W WO2017197696A1 WO 2017197696 A1 WO2017197696 A1 WO 2017197696A1 CN 2016086224 W CN2016086224 W CN 2016086224W WO 2017197696 A1 WO2017197696 A1 WO 2017197696A1
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WO
WIPO (PCT)
Prior art keywords
strip
structures
light
guide plate
light guide
Prior art date
Application number
PCT/CN2016/086224
Other languages
English (en)
French (fr)
Inventor
张嘉尹
翁巾婷
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.)
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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 US15/446,007 priority Critical patent/US10274663B2/en
Publication of WO2017197696A1 publication Critical patent/WO2017197696A1/zh

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    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/18—Printed circuits structurally associated with non-printed electric components
    • H05K1/181—Printed circuits structurally associated with non-printed electric components associated with surface mounted components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V2200/00—Use of light guides, e.g. fibre optic devices, in lighting devices or systems
    • F21V2200/20—Use of light guides, e.g. fibre optic devices, in lighting devices or systems of light guides of a generally planar shape
    • 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
    • G02B6/002—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 by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging 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
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
    • H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
    • H01L25/075—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00
    • H01L25/0753—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L33/00 the devices being arranged next to each other
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10106—Light emitting diode [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to a light guiding component and an application thereof, and in particular to a light guiding plate, a backlight module and a display device.
  • the conventional backlight module mainly includes 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 or there is only a small gap between the two, so that the light of the light emitting diode can be effectively utilized.
  • the light incident surface of the light guide plate is attached to the light emitting surface of the light emitting diode or there is only a small gap between the light emitting diodes, the bright light band or uneven brightness is likely to occur in the light emitting surface of the light guide plate near the light emitting diode. The problem, which seriously affects the optical appearance of the light guide.
  • 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-like structure, which can improve the uneven brightness of the light-emitting surface of the light guide plate near the light-incident surface, and further Improve the uniformity of the appearance of the entire backlight module and the display device.
  • the light guide plate has a main body, a plurality of first strip structures, and a plurality of second strip structures.
  • the body has at least one light incident surface and a main surface, and the main surface is connected to the light incident surface.
  • the first strip structure is arranged in a plurality of first regions on the major surface, wherein each of the first strip structures has a first taper.
  • the second strip structure is arranged in a plurality of second regions on the major surface, wherein each of the second strip structures has a second taper.
  • the first region and the second region on the main surface are interlaced with each other, and the shape of the second strip structure itself is different from the shape of the first strip structure.
  • the extending direction of each of the first strip structure and the second strip structure is perpendicular to the light incident surface.
  • the width of each of the first tapered portion and the second tapered portion gradually increases from one end closer to the light incident surface toward the other end farther from the light incident surface.
  • the light incident surface includes a first light incident surface and a second light incident surface, and the second light incident surface is opposite to the first light incident surface.
  • Each of the first strip structures further includes a third taper, and the third taper is opposite the first taper.
  • Each of the second strip-like structures further includes a fourth taper, and the fourth taper is opposite the second taper.
  • the width of each of the third tapered portion and the fourth tapered portion is gradually changed from an end closer to the second light incident surface toward the other end farther from the second light incident surface. increase.
  • the length of the third tapered portion of each of the first strip-like structures is different from the length of the fourth tapered portion of each of the second strip-like structures.
  • the width of each of the first strip structures is different from the width of each of the second strip structures.
  • the first strip structure and the second strip structure are recessed structures. Moreover, the depth of each of the first strip structures is different from the depth of each of the second strip structures.
  • the first strip structure and the second strip structure are convex structures, and the height of each of the first strip structures is different from the height of each of the second strip structures.
  • each of the first strip structures further has a first body portion
  • each of the second strip structures further has a second body portion.
  • the length of the first body portion of each of the first strip-like structures is different from the length of the second body portion of each of the second strip-like structures.
  • the length of the first tapered portion of each of the first strip-like structures is different from the length of the second tapered portion of each of the second strip-like structures.
  • the main surface is a light emitting surface or a reflecting surface.
  • the backlight module includes the foregoing light guide plate and at least one light source.
  • the light source is disposed adjacent to the light incident surface of the light guide plate, wherein the light source comprises a circuit board and a plurality of light emitting diodes disposed on the circuit board.
  • each of the first regions is adjacent to each of the light emitting diodes, and each of the second regions is located between two adjacent first regions.
  • the first strip-like structure in each of the first regions has a fan-shaped blank area between each of the light-emitting diodes.
  • the distance is the same as the distance between the second strip structure in each of the second regions and each of the light emitting diodes.
  • the display device includes the backlight module and the display panel described above.
  • the display panel is disposed in front of the light guide plate.
  • the main surface of the light guide plate of the present invention is provided with different first strip structures and second strip structures, and the shapes of the first strip structures and the second strip structures and the light intensity and light of the light source.
  • the shape is correspondingly designed, thereby making the light output of the backlight module and the display device more uniform.
  • the microstructure of the main surface of the light guide plate near the light incident surface may further be provided with a microstructure, and the microstructures can effectively atomize the light of the light guide plate near the light entrance, thereby improving the whole Brightness uniformity of the backlight module and the display device.
  • FIG. 1 is a partial perspective view showing a light guide plate according to a first embodiment of the present invention
  • FIG. 2A is a plan view showing a backlight module according to a first embodiment of the present invention.
  • 2B is a side view showing a backlight module according to a first embodiment of the present invention.
  • 3A is a plan view showing a backlight module according to a second embodiment of the present invention.
  • 3B is a side view showing a backlight module according to a second embodiment of the present invention.
  • FIG. 4A is a partial plan view showing a backlight module according to a third embodiment of the present invention.
  • 4B is a partial plan view showing a backlight module according to a fourth embodiment of the present invention.
  • FIG. 5A is a plan view showing a backlight module according to a fifth embodiment of the present invention.
  • 5B is a side view showing a backlight module according to a fifth embodiment of the present invention.
  • Figure 6 is a partial side view showing a light guide plate according to a sixth embodiment of the present invention.
  • FIG. 7A is a partial plan view showing a light guide plate according to a seventh embodiment of the present invention.
  • FIG. 7B is a partial side view showing a light guide plate according to a seventh embodiment of the present invention.
  • FIG. 8A is a partial plan view showing a light guide plate according to an eighth embodiment of the present invention.
  • FIG. 8B is a partial side view showing a light guide plate according to an eighth embodiment of the present invention.
  • FIG. 9 is a partial side view showing a display device according to an embodiment of the present invention.
  • FIG. 1 is a partial perspective view showing a light guide plate according to a first embodiment of the present invention.
  • the light guide plate 100 of the present embodiment mainly includes a main body 110, a plurality of first strip structures 120, and a plurality of second strip structures 130.
  • the first strip structure 120 and the second strip structure 130 are disposed on the main body 110 and are mainly used to homogenize the light emitted from the main body 110 after entering the main body 110.
  • the main body 110 has at least one light incident surface 111 and a main surface 112 , and the main surface 112 is connected to the light surface 111 .
  • the major surface 112 is a light exiting surface.
  • the major surface 112 can also be a reflective surface.
  • the main surface 112 includes a plurality of first regions 112a and a plurality of second regions 112b, and the first region 112a and the second region 112b are staggered with each other.
  • the first region 112a and the second region 112b are staggered with each other along an axis L1 parallel to the light incident surface 111. As shown in FIG.
  • the first strip structure 120 is disposed in the first region 112a, and the second strip structure 130 is disposed in the second region 112b.
  • the dotted line block shown in FIG. 1 is only used to indicate one of the first area and the second area referred to in the present invention, and the dotted line box itself does not belong to the structure of the light guide plate 100 of the present invention. .
  • the extending direction of the first strip structure 120 and the second strip structure 130 is perpendicular to the light incident surface 111 .
  • the first strip structure 120 has a first tapered portion 121 and a first body portion 122, and the first tapered portion 121 is coupled to one end of the first body portion 122 near the light incident surface 111.
  • the second strip structure 130 has a second tapered portion 131 and a The second body portion 132 is connected to the end of the second body portion 132 near the light incident surface 111.
  • the width of each of the first tapered portion 121 and the second tapered portion 131 gradually increases from one end closer to the light incident surface 111 toward the other end farther from the light incident surface 111.
  • the inherent shape of the first strip structure 120 is different from the shape of the second strip structure 130 itself.
  • the "self-formation" referred to herein means the length, depth, height or shape of the first strip-shaped structure 120 or the second strip-like structure 130 itself.
  • the lengths of the first strip structure 120 and the second strip structure 130 are the same, but the lengths of the first tapered portion 121 and the first body portion 122 of the first strip structure 120 are respectively Different from the lengths of the second tapered portion 131 and the second body portion 132 of the second strip structure 130, the overall shape of the first strip structure 120 and the second strip structure 130 are also different.
  • each of the first tapered portion 121 and the second tapered portion 131 of the present embodiment is spaced apart from the light incident surface 111, but the actual application is not limited thereto. In other embodiments, each of the first tapered portion 121 and the second tapered portion 131 may also be designed to be coupled to the light incident surface 111.
  • FIG. 2A and FIG. 2B are a plan view and a side view, respectively, showing a backlight module according to a first embodiment of the present invention.
  • the backlight module 300 of the present embodiment mainly includes the light guide plate 100 and the light source 200 described above.
  • the light source 200 includes a circuit board 201 and a plurality of light emitting diodes 202 disposed on the circuit board 201, wherein the light emitting diodes 202 are electrically connected to the circuit board 201.
  • the light source 200 is disposed adjacent to the light incident surface 111 of the light guide plate 100, and the light generated by the light source 200 can enter the light guide plate 100 from the light incident surface 111 of the light guide plate 100.
  • the proximity of the light source 200 to the light guide plate 100 is not limited to the distance between the light source 200 and the light incident surface 111 of the light guide plate 100 as shown in FIG. 2A and FIG. 2B.
  • the entrance surface 111 is not limited to the distance between the light source 200 and the light incident surface
  • each of the first regions 112a on the main surface 112 of the light guide plate 100 is located directly in front of the LED 202, and the second region 112b is located at two adjacent sides. Between the first regions 112a. That is, the first area 112a and the second area 112b are staggered with each other. Moreover, the first region 112a and the second region 112b are mainly determined according to the arrangement of the LEDs 202 on the circuit board 201.
  • the brightness at the position of the light emitting diode 202 is stronger than the brightness between the two light emitting diodes 202, it is set at the first
  • the shape of the first tapered portion 121 of the first strip structure 120 in the region 112a is relatively elongated, and the shape of the second tapered portion 131 of the second strip structure 130 disposed in the second region 112b is relatively short and wide. .
  • the length of the second body portion 132 is greater than the length of the first body portion 122.
  • the light emitted by the second strip structure 130 is more than the light emitted by the first strip structure 120, so that the brightness of the light emitted from the second region 112b can be increased, thereby making the first region 112a and the first The light intensity of the two regions 112b is more uniform.
  • the first strip structure and the second strip structure of the light guide plate may have different designs.
  • FIG. 3A and FIG. 3B are a plan view and a side view, respectively, showing a backlight module according to a second embodiment of the present invention.
  • the structure of the backlight module 310 of the present embodiment is substantially the same as that of the backlight module 300. The only difference is that the light guide plate 400 in the backlight module 310 has different structural designs.
  • the light guide plate 400 also includes a main body 410 , a plurality of first strip structures 420 , and a plurality of second strip structures 430 .
  • the first strip structure 420 and the second strip structure 430 are disposed on the body 410.
  • the main body 410 has at least one light incident surface 411 and a main surface 412, and the main surface 412 is connected to the light surface 411.
  • the major surface 412 is a light exiting surface. In other embodiments, the major surface 412 can also be a reflective surface. As shown in FIG. 3A and FIG.
  • the main surface 412 includes a plurality of first regions 412a and a plurality of second regions 412b, and the first region 412a and the second region 412b are staggered with each other.
  • the first region 412a and the second region 412b are staggered with each other along an axis L2 parallel to the light incident surface 411.
  • the first strip structure 420 is disposed in the first region 412a
  • the second strip structure 430 is disposed in the second region 412b.
  • the extending direction of the first strip structure 420 and the second strip structure 430 is perpendicular to the light incident surface 411 .
  • the first strip structure 420 has a first tapered portion 421 and a first body portion 422, and the first tapered portion 421 is coupled to one end of the first body portion 422 near the light incident surface 411.
  • the second strip structure 430 has a second tapered portion 431 and a second body portion 432 , and the second tapered portion 431 is connected to one end of the second body portion 432 near the light incident surface 411 .
  • each of the first tapered portion 421 and the second tapered portion 431 increases from an end closer to the light incident surface 411 toward the other end farther from the light incident surface 411.
  • both the first strip structure 420 and the second strip structure 430 are The protruding structure, and the lengths of the first tapered portion 421 and the first body portion 422 of the first strip structure 420 and the length of the second tapered portion 431 and the second body portion 432 of the second strip structure 430, respectively The same, but the height and width of the first strip structure 420 and the second strip structure 430 are different. Therefore, the overall shape of the first strip structure 420 and the second strip structure 430 are also different.
  • each first region 412a on the main surface 412 of the light guide plate 400 is located directly in front of the LED 202, and the second region 412b is located at two adjacent sides. Between the first regions 412a. Since the brightness at the position of the light emitting diode 202 is stronger than the brightness at the position between the two light emitting diodes 202, the width and height of the first strip structure 420 disposed in the first region 412a are small, and The width and height of the second tapered portion 131 of the second strip-like structure 430 disposed in the second region 412b are large.
  • the light emitted by the second strip structure 430 is more than the light emitted by the first strip structure 420, so that the brightness of the light emitted from the second region 412b can be increased, and the first region 412a can also be The brightness of the second region 412b is more uniform.
  • the first strip structure 420 and the second strip structure 430 of the present embodiment are convex structures for illustrative purposes only, and are not intended to limit the present invention.
  • the first strip structure 420 and the second strip structure 430 may also be designed as recessed structures according to requirements, and have different depths, thereby achieving the same purpose as described above, and thus will not be described herein. .
  • the shapes of the first strip structures 120 and 420 of each of the first regions 112a and 412a are not the same to limit the present invention.
  • the shape of each of the first strip structures in the first region may also be designed to be different from each other depending on the light shape produced by the corresponding light emitting diodes.
  • FIG. 4A is a partial plan view showing a backlight module according to a third embodiment of the present invention.
  • the structure of the backlight module 320 of the present embodiment is substantially the same as that of the backlight module 300. The only difference is that the light guide plate 100' in the backlight module 320 has a different structural design.
  • the shape of each of the first strip structures 120' in the first region 112a is different from each other.
  • the portion of the first region 112a that is adjacent to the intermediate portion of the light incident surface 111 receives light more than the first region 112a.
  • the portion near the two sides of the entrance surface 111 receives a large amount of light. Therefore, the first tapered portion 121' of the first strip-like structure 120' The length can be designed according to the light shape produced by the LED 202.
  • the first tapered portion 121' located at the intermediate position of the first region 112a is longer than the first tapered portion 121' located at both sides of the first region 112a, and is located in the middle of the first region 112a
  • the first body portion 122' of the position is shorter than the first body portion 122' located at both sides of the first region 112a.
  • the distance between each of the first strip structures in the first region and the light emitting diode is between the second strip structure in the second region and the light emitting diode.
  • the distance is the same.
  • the distance between each of the first strip structures in the first region and the light emitting diodes may also be designed according to the light shape produced by the light emitting diodes.
  • FIG. 4B which is a partial plan view showing a backlight module according to a fourth embodiment of the present invention.
  • the structure of the backlight module 330 of the present embodiment is substantially the same as that of the backlight module 320. The only difference is that the light guide plate 100" in the backlight module 330 has different structural designs.
  • the length of each of the first strip structures 120" in the first region 112a is different, and the distance from the light incident surface 111 is also different.
  • the portion of the first region 112a near the intermediate position of the light incident surface 111 receives light more than the first region 112a.
  • the length of the first strip structure 120" and the distance from the light incident surface 111 can be designed according to the light shape generated by the light emitting diode 202.
  • the distance between the first strip structure 120" located at the intermediate position of the first region 112a and the light incident surface 111 is greater than the first strip structure 120" of the two sides of the first region 112a.
  • the distance between the smooth faces 111 is far, which causes the sector-shaped blank regions 100a to form between the first strip-like structures 120" in each of the first regions 112a and each of the light-emitting diodes 202.
  • the first strip-shaped structure 120" at the side position emits more light than the first strip-like structure 120" from the intermediate position of the first region 112a, so that the light-emitting luminance of the entire first region 112a is more uniform.
  • the light guide plate of the foregoing embodiment has a light incident surface for illustrative purposes only and is not intended to limit the present invention. In other embodiments, the light guide plate can also be designed according to requirements. It has two light-incident surfaces.
  • FIG. 5A and FIG. 5B are a plan view and a side view showing a backlight module according to a fifth embodiment of the present invention.
  • the backlight module 500 includes a first light source 610 , a second light source 620 , and a light guide plate 700 .
  • the light guide plate 700 mainly includes a main body 710, a plurality of first strip structures 720, and a plurality of second strip structures 730.
  • the first strip structure 720 and the second strip structure 730 are disposed on the main body 710, and are also used to homogenize the light emitted from the main body 710 after entering the main body 710.
  • the main body 710 has a first light incident surface 711, a second light incident surface 712, and a main surface 713.
  • the first light incident surface 711 and the second light incident surface 712 are connected to opposite sides of the main surface 713.
  • the major surface 713 is a light exiting surface. In other embodiments, the major surface 713 can also be a reflective surface.
  • the main surface 713 includes a plurality of first regions 713a and a plurality of second regions 713b, and the first region 713a and the second region 713b are staggered with each other.
  • first region 712a and the second region 712b are staggered with each other along the axis L3 parallel to the light incident surface 711.
  • first strip structure 720 is disposed in the first region 713a
  • second strip structure 730 is disposed in the second region 713b.
  • the second strip structure 730 has a second tapered portion 731 , a second body portion 732 and a fourth tapered portion 733 , and the second tapered portion 731 is connected to the second body portion 732 adjacent to the first light incident surface 711 .
  • the fourth tapered portion 733 is connected to one end of the second body portion 732 near the second light incident surface 712.
  • the width of each of the first tapered portion 721 and the second tapered portion 731 is from an end closer to the first light incident surface 711 toward a further distance from the first light incident surface 711. One end is increasing.
  • each of the third tapered portion 723 and the fourth tapered portion 733 gradually increases from one end closer to the second light incident surface 712 toward the other end farther from the second light incident surface 712.
  • the shape of the first strip structure 720 itself is different from the shape of the second strip structure 730.
  • the first light source 610 includes a circuit board 611 and a plurality of light emitting diodes 612 disposed on the circuit board 611 , wherein the light emitting diodes 612 are electrically connected to the circuit board 611 .
  • the first light source 610 is disposed adjacent to the first light incident surface 711 of the light guide plate 700 , and the light generated by the first light source 610 can enter the light guide plate 700 from the first light incident surface 711 of the light guide plate 700 .
  • the second light source 620 includes a circuit board 621 and a plurality of light emitting diodes 622 disposed on the circuit board 621, wherein the light emitting diodes 622 are electrically connected to the circuit board 621.
  • the second light source 620 is disposed adjacent to the second light incident surface 712 of the light guide plate 700 , and the light generated by the second light source 620 can enter the light guide plate 700 from the second light incident surface 712 of the light guide plate 700 .
  • the proximity referred to herein is not limited to the second light incident between the first light source 610 and the first light incident surface 711 of the light guide plate 700 and the second light source 620 and the light guide plate 700 as shown in FIGS. 5A and 5B. There is a small distance between the faces 712.
  • the first light source 610 can directly abut the first light incident surface 711 of the light guide plate 700 and the second light source 620 directly abuts the second light incident surface 712 of the light guide plate 700. .
  • each of the first regions 713a on the main surface 713 of the light guide plate 700 is located directly in front of the light emitting diodes 612 and 622, and the second region 713b is located between the two adjacent first regions 713a. Therefore, the first tapered portion 721 and the third tapered portion 723 of the first strip-like structure 720 disposed in the first region 713a are relatively elongated, and the second strip-shaped structure disposed in the second region 713b The second tapered portion 731 and the fourth tapered portion 733 of the 730 are relatively short in shape. Moreover, the length of the second body portion 732 is greater than the length of the first body portion 722.
  • the light emitted by the second strip structure 730 is more than the light of the first strip structure 720, so that the brightness of the light emitted from the second region 713b can be increased, thereby making the first region 713a and the second region 713b The brightness of the light is more uniform.
  • the length, height, depth of the first strip structure 720 and the second strip structure 730 or the distance between the first light incident surface 711 and the second light incident surface 712 are both It can be adjusted according to different needs to achieve the aforementioned objectives.
  • the first strip structure 720 or the second strip structure 730 having the tapered end portions of the present embodiment is not limited to being applied to the light guide plate that enters light on both sides, and can also be applied to the guide of the single side light entrance. In the light board.
  • the light guide plate of the present invention is not limited to a flat plate design. In other embodiments, the light guide plate may also be a wedge-shaped light guide plate.
  • FIG. 6 is a partial side view showing a light guide plate according to a sixth embodiment of the present invention.
  • the light guide plate 800 includes a main body 810 and a plurality of first strips. The structure 820 and the plurality of second strip structures 830.
  • the main body 810 includes a flat plate portion 810a and a tapered portion 810b that connects the flat plate portion 810a.
  • the main body 810 has a light incident surface 811 and a main surface 813, wherein the light incident surface 811 is located on the side of the tapered portion 810b, and the main surface 813 is located on the flat plate portion 810a.
  • the first strip structure 820 and the second strip structure 830 are disposed on the main surface 813 of the flat plate portion 810a. In other embodiments, the first strip structure 820 and the second strip structure 830 may also be disposed at the same position of the tapered portion 810b and the flat plate portion 810a as needed.
  • first strip structure 820 and the second strip structure 830 of the present embodiment are designed in the same manner as the first strip structures 120, 420, 120', 120" and 720 and the second strip of the foregoing embodiment.
  • the structures 130, 430, and 730 are the same, and thus will not be described again.
  • FIG. 7A and 7B are a partial plan view and a partial side view, respectively, showing a light guide plate according to a seventh embodiment of the present invention.
  • the light guide plate 900 of the present embodiment includes a main body 910, a plurality of first strip structures 920, and a plurality of second strip structures 930.
  • the main body 910 includes a light incident surface 911 and a main surface 913 connected to the light incident surface 911.
  • the first strip structure 920 and the second strip structure 930 are disposed on the major surface 913.
  • the light guide plate 900 further includes a plurality of microstructures 940 disposed at a position of the main surface 913 near the light incident surface 911.
  • the microstructure 940 can mainly enhance the atomization of the light near the light entering portion of the light guide plate 900, thereby improving the uniformity of the light near the light entering portion of the light guide plate 900, so as to improve the light output quality of the light guide plate 900 as a whole.
  • the microstructure 940 does not directly contact the first strip structure 920 and the second strip structure 930, and the microstructure 940 has a blank portion 913a between the first strip structure 920 and the second strip structure 930.
  • the light that has passed through the microstructure 940 region and is not guided by the microstructure 940 can be transmitted toward the light guide plate 900 in a direction away from the light incident surface 911 after the total reflection of the blank portion 913a.
  • the microstructures 940 can be strip-like protrusions or strip-shaped recess structures. It should be noted that the first strip structure 920 and the second strip structure 930 of the present embodiment are designed in the same manner as the first strip structures 120, 420, 120', 120" and 720 and the second strip of the foregoing embodiment. The structures 130, 430, and 730 are designed in the same manner, and thus will not be described again.
  • FIG. 8A and 8B are a partial plan view and a partial side view, respectively, showing a light guide plate according to an eighth embodiment of the present invention.
  • Light guide plate of the embodiment The structure of the 900' is substantially the same as that of the light guide plate 900 of the foregoing embodiment, except that the main body 910' of the light guide plate 900' has a tapered portion 910a, and the microstructure 940 is disposed on the main surface 913 and connected to the tapered portion. 910a, thereby achieving the atomization of the light near the light entrance of the light guide plate 900', thereby improving the uniformity of the light of the light guide plate 900' near the light entrance.
  • the microstructure 940 does not directly contact the first strip structure 920 and the second strip structure 930, and the first blank portion 913b is disposed between the microstructure 940 and the first strip structure 920 and the second strip structure 930. .
  • the microstructure 940 does not directly contact the light incident surface 911, and the second blank portion 910b is disposed between the microstructure 940 and the light incident surface 911.
  • the light entering from the light incident surface 911 can be transmitted toward the microstructure 940 after the second blank portion 910b is totally reflected.
  • the light passing through the microstructure 940 region and not being guided by the microstructure 940 can be transmitted toward the light guide plate 900 in a direction away from the light incident surface 911 after the first blank portion 913b is totally reflected.
  • the total reflected light is more uniform after the adjustment of the first strip structure 920 and the second strip structure 930.
  • FIG. 9 is a partial side view showing a display device in accordance with an embodiment of the present invention.
  • the display device 1000 of the present embodiment includes a backlight module 300 and a display panel 1100 as shown in FIG. 2B.
  • the display panel 1100 is disposed in front of the light guide plate 100 of the backlight module 300 , and the same purpose as described above can be achieved, and thus no further details are provided herein.
  • the present embodiment only applies the backlight module 300 illustrated in FIG. 2B to the display device 1000 for exemplary purposes, and is not intended to limit the present invention.
  • the backlight modules e.g., backlight modules 310, 330, and 500
  • the light guides e.g., 800, 900, and 900'
  • the main surface of the light guide plate of the present invention is provided with different first strip structures and second strip structures, and the first strip structures and the second strip structures are combined with the light source.
  • the light intensity is designed corresponding to the light shape, thereby making the light output of the backlight module and the display device more uniform.
  • the microstructure of the main surface of the light guide plate near the light incident surface may further be provided with a microstructure, and the microstructures can effectively atomize the light of the light guide plate near the light entrance, thereby improving the entire Brightness uniformity of the backlight module and the display device.

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Abstract

导光板(100、100'、100''、400、700、800、900、900')、背光模组(300、310、320、330、500)及显示装置(1000)。此导光板(100、100'、100''、400、700、800、900、900')具有主体(110、410、710、810、910、910')、多个第一条状结构(120、120'、120''、420、720、820、920)以及多个第二条状结构(130、430、730、830、930)。主体(110、410、710、810、910、910')具有至少一个入光面(111、411、711、712、811、911)以及与入光面(111、411、711、712、811、911)相连接的主表面(112、412、713、813、913)。第一条状结构(120、120'、120''、420、720、820、920)排列在主表面(112、412、713、813、913)上的多个第一区域(112a、412a、713a)中，且每一个第一条状结构(120、120'、120''、420、720、820、920)具有第一渐缩部(121、121'、421、721)。第二条状结构(130、430、730、830、930)排列在主表面(112、412、713、813、913)上的多个第二区域(112b、412b、713b)中，且每一个第二条状结构(130、430、730、830、930)具有第二渐缩部(131、431、731)。主表面(112、412、713、813、913)上的第一区域(112a、412a、713a)与第二区域(112b、412b、713b)互相交错，且第二条状结构(130、430、730、830、930)的本身形态不同于第一条状结构(120、120'、120''、420、720、820、920)的本身形态。

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，并且特别涉及导光板、背光模组及显示装置。
背景技术
习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。导光板设置在发光二极管旁边，且导光板的入光面贴合发光二极管的出光面或者这两者之间只存在很小的间隙，由此可以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或者这两者之间只存在很小的间隙，故在导光板的出光面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，从而严重影响导光板的光学外观。
发明内容
因此，本发明的目的在于提供导光板、背光模组及显示装置，其中导光板具有条状结构，其可改善导光板的出光面的靠近入光面的部分的亮度不均的问题，进而可以提升整个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。此导光板具有主体、多个第一条状结构以及多个第二条状结构。主体具有至少一个入光面以及主表面，且主表面与入光面相连接。第一条状结构排列在主表面上的多个第一区域中，其中每一个第一条状结构具有第一渐缩部。第二条状结构排列在主表面上的多个第二区域中，其中每一个第二条状结构具有第二渐缩部。主表面上的第一区域与第二区域互相交错，且第二条状结构的本身形态不同于第一条状结构的本身形态。
根据本发明的实施例，上述第一条状结构与第二条状结构中的每一者的延伸方向垂直于入光面。第一渐缩部与第二渐缩部中的每一者的宽度从较靠近入光面的一端朝向较远离入光面的另一端渐增。
根据本发明的另一个实施例，上述入光面包含第一入光面与第二入光面，且第二入光面与第一入光面相反。每一个第一条状结构还包含第三渐缩部，且第三渐缩部与第一渐缩部相反。每一个第二条状结构还包含第四渐缩部，且第四渐缩部与第二渐缩部相反。
根据本发明的又一个实施例，上述第三渐缩部与第四渐缩部中的每一者的宽度从较靠近第二入光面的一端朝向较远离第二入光面的另一端渐增。
根据本发明的再一个实施例，上述每一个第一条状结构的第三渐缩部的长度不同于每一个第二条状结构的第四渐缩部的长度。
根据本发明的再一个实施例，上述每一个第一条状结构的宽度不同于每一个第二条状结构的宽度。
根据本发明的再一个实施例，上述第一条状结构与第二条状结构为凹陷结构。而且，每一个第一条状结构的深度不同于每一个第二条状结构的深度。
根据本发明的再一个实施例，上述第一条状结构与第二条状结构为凸出结构，且每一个第一条状结构的高度不同于每一个第二条状结构的高度。
根据本发明的再一个实施例，上述每一个第一条状结构还具有第一本体部，且每一个第二条状结构还具有第二本体部。每一个第一条状结构的第一本体部的长度不同于每一个第二条状结构的第二本体部的长度。
根据本发明的再一个实施例，上述每一个第一条状结构的第一渐缩部的长度不同于每一个第二条状结构的第二渐缩部的长度。
根据本发明的再一个实施例，上述主表面为出光面或反射面。
根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导光板以及至少一个光源。光源邻近导光板的入光面设置，其中光源包含电路板以及设置在电路板上的多个发光二极管。
根据本发明的实施例，上述每一个第一区域分别正对于每一个发光二极管，且每一个第二区域位于两个相邻的第一区域之间。
根据本发明的实施例，上述每一个第一区域中的第一条状结构与每一个发光二极管之间具有扇形空白区域。
根据本发明的另一个实施例，在第一条状结构与第二条状结构中的每一者的延伸方向上，每一个第一区域中的第一条状结构与每一个发光二极管之间的距离与每一个第二区域中的第二条状结构与每一个发光二极管之间的距离相同。
根据本发明之上述目的，还提出一种显示装置。该显示装置包含上述的背光模块以及显示面板。该显示面板设置在该导光板的前方。
由上述可知，本发明的导光板的主表面上设有不同的第一条状结构与第二条状结构，且这些第一条状结构与第二条状结构的形态与光源的出光强度和光形相对应地设计，由此可以使背光模组及显示装置的出光更均匀。
此外，在不同的实施例中，导光板的主表面的靠近入光面的位置可进一步设置微结构，且这些微结构可以有效地雾化导光板的靠近入光处的光线，进而可提升整个背光模组及显示装置的亮度均匀度。
附图说明
为了更完整地了解实施例及其优点，现参照并结合附图做出下列描述，其中：
图1是示出根据本发明的第一实施方式的导光板的局部立体示意图；
图2A是示出根据本发明的第一实施方式的背光模组的俯视图；
图2B是示出根据本发明的第一实施方式的背光模组的侧视图；
图3A是示出根据本发明的第二实施方式的背光模组的俯视图；
图3B是示出根据本发明的第二实施方式的背光模组的侧视图；
图4A是示出根据本发明的第三实施方式的背光模组的局部俯视图；
图4B是示出根据本发明的第四实施方式的背光模组的局部俯视图；
图5A是示出根据本发明的第五实施方式的背光模组的俯视图；
图5B是示出根据本发明的第五实施方式的背光模组的侧视图；
图6是示出根据本发明的第六实施方式的导光板的局部侧视图；
图7A是示出根据本发明的第七实施方式的导光板的局部俯视图；
图7B是示出根据本发明的第七实施方式的导光板的局部侧视图；
图8A是示出根据本发明的第八实施方式的导光板的局部俯视图；
图8B是示出根据本发明的第八实施方式的导光板的局部侧视图；以及
图9是示出根据本发明的实施方式的显示装置的局部侧视图。
具体实施方式
请先参照图1，其是示出根据本发明的第一实施方式的导光板的局部立体示意图。本实施方式的导光板100主要包含主体110、多个第一条状结构120以及多个第二条状结构130。第一条状结构120以及第二条状结构130设置在主体110上，且主要用于使进入主体110后从主体110射出的光线均匀化。
请继续参照图1，主体110具有至少一个入光面111以及主表面112，且主表面112连接入光面111。在本实施例中，主表面112为出光面。在其他实施例中，主表面112也可以为反射面。如图1所示，主表面112包含多个第一区域112a及多个第二区域112b，且第一区域112a与第二区域112b互相交错排列。更详细地说，第一区域112a与第二区域112b沿着平行于入光面111的轴线L1互相交错排列。如图1所示，第一条状结构120设置在第一区域112a中，且第二条状结构130设置在第二区域112b中。需要说明的是，图1所示的虚线方框仅用来示意本发明所指的第一区域与第二区域中的一者，该虚线方框本身并不属于本发明的导光板100的结构。
请继续参照图1，在本实施例中，第一条状结构120与第二条状结构130的延伸方向垂直于入光面111。而且，第一条状结构120具有第一渐缩部121以及第一本体部122，且第一渐缩部121连接到第一本体部122的靠近入光面111的一端。第二条状结构130具有第二渐缩部131以及第 二本体部132，且第二渐缩部131连接到第二本体部132的靠近入光面111的一端。如图1所示，第一渐缩部121与第二渐缩部131中的每一者的宽度从靠近入光面111的一端朝向较远离入光面111的另一端渐增。在本实施例中，第一条状结构120的本身形态(inherent type)不同于第二条状结构130的本身形态。需要说明的是，在此所指的「本身形态」指第一条状结构120或第二条状结构130本身所具有的长度、深度、高度或形状等。在图1所示的实施例中，第一条状结构120与第二条状结构130的长度相同，但第一条状结构120的第一渐缩部121及第一本体部122的长度分别与第二条状结构130的第二渐缩部131及第二本体部132的长度不同，进而使得第一条状结构120与第二条状结构130的整体形状也有所不同。需要说明的是，本实施方式的第一渐缩部121与第二渐缩部131中的每一者与入光面111相间隔，但是实际应用时并不限于此。在其他实施例中，第一渐缩部121与第二渐缩部131中的每一者也可以设计为连接至入光面111。
请同时参照图2A及图2B，图2A及图2B是分别示出根据本发明的第一实施方式的背光模组的俯视图及侧视图。本实施方式的背光模组300主要包含前述的导光板100以及光源200。光源200包含电路板201以及设置在电路板201上的多个发光二极管202，其中这些发光二极管202与电路板201电连接。光源200邻近导光板100的入光面111设置，且光源200所产生的光线可从导光板100的入光面111进入导光板100中。此处所指的邻近并不局限于图2A及图2B所示的、光源200与导光板100的入光面111之间存在很小的距离，也可以指光源200直接贴抵于导光板100的入光面111。
如图2A及图2B所示，在本实施例中，导光板100的主表面112上的每一个第一区域112a位于发光二极管202的正前方，而第二区域112b则位于两个相邻的第一区域112a之间。也就是说，第一区域112a与第二区域112b互相交错排列。而且，第一区域112a与第二区域112b主要依据发光二极管202在电路板201上的排列方式而定。由于正对发光二极管202的位置处的亮度比两个发光二极管202之间的亮度强，因此，设置在第一 区域112a中的第一条状结构120的第一渐缩部121的形状较为细长，而设置在第二区域112b中的第二条状结构130的第二渐缩部131的形状较为短宽。而且，第二本体部132的长度大于第一本体部122的长度。由此，由第二条状结构130带出的光线比由第一条状结构120带出的光线多，故可提升从第二区域112b射出的光线的亮度，进而使第一区域112a与第二区域112b的出光亮度更均匀。
在本发明中，导光板的第一条状结构与第二条状结构可具有不同的设计。请参照图3A及图3B，图3A及图3B是分别示出根据本发明的第二实施方式的背光模组的俯视图及侧视图。本实施方式的背光模组310的结构与前述背光模组300的结构大致相同，差异仅在于背光模组310中的导光板400具有不同的结构设计。
如图3A及图3B所示，导光板400同样包含主体410、多个第一条状结构420以及多个第二条状结构430。第一条状结构420以及第二条状结构430设置在主体410上。其中，主体410具有至少一个入光面411以及主表面412，且主表面412连接入光面411。在本实施例中，主表面412为出光面。在其他实施例中，主表面412也可以为反射面。如图3A及图3B所示，主表面412包含多个第一区域412a及多个第二区域412b，且第一区域412a与第二区域412b互相交错排列。更详细地说，第一区域412a与第二区域412b沿着平行于入光面411的轴线L2互相交错排列。第一条状结构420设置在第一区域412a中，且第二条状结构430设置在第二区域412b中。
请继续参照图3A及图3B，在本实施例中，第一条状结构420与第二条状结构430的延伸方向垂直于入光面411。而且，第一条状结构420具有第一渐缩部421以及第一本体部422，且第一渐缩部421连接到第一本体部422的靠近入光面411的一端。第二条状结构430具有第二渐缩部431以及第二本体部432，且第二渐缩部431连接到第二本体部432的靠近入光面411的一端。其中，第一渐缩部421与第二渐缩部431中的每一者的宽度从靠近入光面411的一端朝向较远离入光面411的另一端渐增。在图3A及图3B所示的实施例中，第一条状结构420与第二条状结构430均 为凸出结构，且第一条状结构420的第一渐缩部421及第一本体部422的长度分别与第二条状结构430的第二渐缩部431及第二本体部432的长度相同，但第一条状结构420与第二条状结构430的高度与宽度均不相同。因此，第一条状结构420与第二条状结构430的整体形状也不相同。
请继续参照图3A及图3B，在本实施例中，导光板400的主表面412上的每一个第一区域412a位于发光二极管202的正前方，而第二区域412b则位于两个相邻的第一区域412a之间。由于正对发光二极管202的位置处的亮度比两个发光二极管202之间的位置处的亮度强，因此，设置在第一区域412a中的第一条状结构420的宽度与高度较小，而设置在第二区域412b中的第二条状结构430的第二渐缩部131的宽度与高度较大。由此，由第二条状结构430带出的光线比由第一条状结构420带出的光线多，故可提升从第二区域412b射出的光线的亮度，同样可使第一区域412a与第二区域412b的出光亮度更均匀。需要说明的是，本实施方式的第一条状结构420与第二条状结构430为凸出结构仅用于示范说明，并非用以限制本发明。在其他实施例中，第一条状结构420与第二条状结构430也可以根据需求而设计成凹陷结构，且具有不同的深度，由此达到与前述相同的目的，故于此不再赘述。
需要说明的是，在前述的实施例中，第一区域112a及412a中的每一者的第一条状结构120及420的形状相同并非用以限制本发明。在其他实施例中，第一区域中的每一个第一条状结构的形状也可以依据所对应的发光二极管所产生的光形而设计成彼此不同。请参照图4A，其是示出根据本发明的第三实施方式的背光模组的局部俯视图。本实施方式的背光模组320的结构与前述背光模组300的结构大致相同，差异仅在于背光模组320中的导光板100’具有不同的结构设计。
如图4A所示，在导光板100’中，第一区域112a中的每一个第一条状结构120’的形状彼此不同。举例而言，若发光二极管202所产生的光线以发散的方式射入导光板100’中，则第一区域112a的靠近入光面111的中间位置处的部分所接收的光线比第一区域112a的靠近入光面111的两侧位置处的部分所接收的光线多。因此，第一条状结构120’的第一渐缩部121’ 的长度可以依据发光二极管202所产生的光形来设计。在本实施例中，位于第一区域112a的中间位置的第一渐缩部121’比位于第一区域112a的两侧位置的第一渐缩部121’长，且位于第一区域112a的中间位置的第一本体部122’比位于第一区域112a的两侧位置的第一本体部122’短。由此，从第一区域112a的两侧位置的第一条状结构120’射出的光线比从第一区域112a的中间位置的第一条状结构120’所射出的光线多，以使整个第一区域112a的出光亮度更均匀。
需要说明的是，在前述的实施例中，第一区域中的每一个第一条状结构与发光二极管之间的距离与第二区域中的每一个第二条状结构与发光二极管之间的距离相同。在其他实施例中，第一区域中的每一个第一条状结构与发光二极管之间的距离也可以依据发光二极管所产生的光形来设计。另请参照图4B，其是示出根据本发明的第四实施方式的背光模组的局部俯视图。本实施方式的背光模组330的结构与前述背光模组320的结构大致相同，差异仅在于背光模组330中的导光板100”具有不同的结构设计。
如图4B所示，在导光板100”中，第一区域112a中的每一个第一条状结构120”的长度不同，且与入光面111之间的距离也不相同。举例而言，若发光二极管202所产生的光线以发散的方式射入导光板100”中，则第一区域112a的靠近入光面111的中间位置处的部分所接收的光线比第一区域112a的靠近入光面111的两侧位置处的部分多。因此，第一条状结构120”的长度以及与入光面111之间的距离可以依据发光二极管202所产生的光形来设计。在本实施例中，位于第一区域112a的中间位置的第一条状结构120”与入光面111之间的距离比第一区域112a的两侧位置的第一条状结构120”与入光面111之间的距离远，这使得每一个第一区域112a中的第一条状结构120”与每一个发光二极管202之间形成扇形空白区域100a。由此，从第一区域112a的两侧位置的第一条状结构120”射出的光线比从第一区域112a的中间位置的第一条状结构120”所射出的光线多，以使整个第一区域112a的出光亮度更均匀。
需要说明的是，前述实施例的导光板具有一个入光面仅用于示范说明，并非用以限制本发明。在其他实施例中，导光板也可以依需求而设计 成具有两个入光面。请参照图5A及图5B，图5A及图5B是示出根据本发明的第五实施方式的背光模组的俯视图及侧视图。在本实施方式中，背光模组500包含第一光源610、第二光源620以及导光板700。导光板700主要包含主体710、多个第一条状结构720以及多个第二条状结构730。第一条状结构720与第二条状结构730设置在主体710上，同样用于使进入主体710后从主体710射出的光线均匀化。
请继续参照图5A及图5B，主体710具有第一入光面711、第二入光面712以及主表面713。在本实施例中，第一入光面711与第二入光面712连接到主表面713的相对两侧。在本实施例中，主表面713为出光面。在其他实施例中，主表面713也可以为反射面。如图5A及图5B所示，主表面713包含多个第一区域713a及多个第二区域713b，且第一区域713a与第二区域713b互相交错排列。更详细地说，第一区域712a与第二区域712b沿着平行于入光面711的轴线L3互相交错排列。如图5A及图5B所示，第一条状结构720设置在第一区域713a中，且第二条状结构730设置在第二区域713b中。
请继续参照图5A及图5B，在本实施例中，第一条状结构720与第二条状结构730的延伸方向垂直于第一入光面711与第二入光面712。在本实施例中，第一条状结构720具有第一渐缩部721、第一本体部722以及第三渐缩部723，且第一渐缩部721连接到第一本体部722的靠近第一入光面711的一端，第三渐缩部723则连接到第一本体部722的靠近第二入光面712的一端。第二条状结构730具有第二渐缩部731、第二本体部732以及第四渐缩部733，且第二渐缩部731连接到第二本体部732的靠近第一入光面711的一端，第四渐缩部733连接到第二本体部732的靠近第二入光面712的一端。如图5A及图5B所示，第一渐缩部721与第二渐缩部731中的每一者的宽度从靠近第一入光面711的一端朝向较远离第一入光面711的另一端渐增。同样地，第三渐缩部723与第四渐缩部733中的每一者的宽度从靠近第二入光面712的一端朝向较远离第二入光面712的另一端渐增。在本实施例中，第一条状结构720的本身形态不同于第二条状结构730的本身形态。
请再次参照图5A及图5B，第一光源610包含电路板611以及设置在电路板611上的多个发光二极管612，其中这些发光二极管612与电路板611电连接。第一光源610邻近导光板700的第一入光面711设置，且第一光源610所产生的光线可从导光板700的第一入光面711进入导光板700中。第二光源620包含电路板621以及设置在电路板621上的多个发光二极管622，其中这些发光二极管622与电路板621电连接。第二光源620邻近导光板700的第二入光面712设置，且第二光源620所产生的光线可从导光板700的第二入光面712进入导光板700中。此处所指的邻近并不侷限于图5A及图5B所示的、第一光源610与导光板700的第一入光面711之间以及第二光源620与导光板700的第二入光面712之间存在很小的距离，也可以指第一光源610直接贴抵于导光板700的第一入光面711以及第二光源620直接贴抵于导光板700的第二入光面712。
在本实施例中，导光板700的主表面713上的每一个第一区域713a位于发光二极管612与622的正前方，而第二区域713b则位于两个相邻的第一区域713a之间。因此，设置在第一区域713a中的第一条状结构720的第一渐缩部721及第三渐缩部723的形状较为细长，而设置在第二区域713b中的第二条状结构730的第二渐缩部731及第四渐缩部733形状较为短宽。而且，第二本体部732的长度大于第一本体部722的长度。因此，由第二条状结构730带出的光线比由第一条状结构720的光线多，故可提升从第二区域713b射出的光线的亮度，进而使第一区域713a与第二区域713b的出光亮度更均匀。
需要说明的是，在其他实施例中，第一条状结构720与第二条状结构730的长度、高度、深度或与第一入光面711及第二入光面712之间的距离均可依据不同需求而调整，以达到前述的目的。此外，本实施方式的具有两端渐缩部的第一条状结构720或第二条状结构730并不限于应用在两侧入光的导光板中，也可以应用于单侧入光的导光板中。
本发明的导光板并不限于平板式设计。在其他实施例中，导光板也可以为楔形导光板。请参照图6，其是示出根据本发明的第六实施方式的导光板的局部侧视图。如图6所示，导光板800包含主体810、多个第一条 状结构820与多个第二条状结构830。在本实施例中，主体810包含平板部810a以及连接平板部810a的渐缩部810b。主体810具有入光面811以及主表面813，其中入光面811位于渐缩部810b的侧面，主表面813位于平板部810a上。在本实施例中，第一条状结构820与第二条状结构830设置在位于平板部810a的主表面813上。在其他实施例中，第一条状结构820与第二条状结构830也可以依据需求而同时设置在渐缩部810b与平板部810a的位置处。需要说明的是，本实施方式的第一条状结构820与第二条状结构830的设计方式与前述实施例的第一条状结构120、420、120’、120”及720与第二条状结构130、430、及730相同，故于此不再赘述。
另请参照图7A及图7B，图7A及图7B是分别示出根据本发明的第七实施方式的导光板的局部俯视图以及局部侧视图。本实施方式的导光板900包含主体910、多个第一条状结构920与多个第二条状结构930。主体910包含入光面911以及连接入光面911的主表面913。第一条状结构920与第二条状结构930设置在主表面913上。在本实施例中，导光板900还包含设置在主表面913的靠近入光面911的位置处的多个微结构940。微结构940主要可以加强导光板900的靠近入光处的光线的雾化，从而提升导光板900的靠近入光处的光线的均匀度，以提升导光板900整体的出光质量。优选地，微结构940并未直接接触第一条状结构920及第二条状结构930，且微结构940与第一条状结构920及第二条状结构930之间具有空白部913a。由此，通过微结构940区域且未能被微结构940导出的光线，可在空白部913a产生全反射后，朝向导光板900的远离入光面911的方向传递。这些经过全反射的光线在经过第一条状结构920与第二条状结构930的调整后，可使出光亮度更均匀。在一些实施例中，微结构940可以为条状凸出结构或条状凹陷结构。需要说明的是，本实施方式的第一条状结构920与第二条状结构930的设计方式与前述实施例的第一条状结构120、420、120’、120”及720与第二条状结构130、430、及730的设计方式相同，故于此不再赘述。
另请参照图8A及图8B，图8A及图8B是分别示出根据本发明的第八实施方式的导光板的局部俯视图以及局部侧视图。本实施方式的导光板 900’的结构与前述实施例的导光板900的结构大致相同，差异仅在于导光板900’的主体910’具有渐缩部910a，且微结构940设置在主表面913上并连接到渐缩部910a，由此达到加强导光板900’的靠近入光处的光线的雾化，从而可提升导光板900’的靠近入光处的光线的均匀度。优选地，微结构940并未直接接触第一条状结构920及第二条状结构930，且微结构940与第一条状结构920及第二条状结构930之间具有第一空白部913b。同样地，微结构940并未直接接触入光面911，且微结构940与入光面911之间具有第二空白部910b。由此，从入光面911进入的光线可在第二空白部910b产生全反射后，朝向微结构940的方向传递。而通过微结构940区域且未能被微结构940导出的光线，可在第一空白部913b产生全反射后，朝向导光板900的远离入光面911的方向传递。这些经过全反射的光线在通过第一条状结构920与第二条状结构930的调整后，可使出光亮度更均匀。
另请参照图9，其是示出根据本发明的实施方式的显示装置的局部侧视图。本实施方式的显示装置1000包含如图2B所示的背光模组300以及显示面板1100。如图9所示，显示面板1100设置在背光模组300的导光板100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，本实施例仅将图2B所示的背光模组300应用于显示装置1000中用作示范说明，并非用以限制本发明。前述其他实施例的背光模组(例如背光模组310、330及500)或导光板(例如800、900及900’)均可应用到显示装置中，以产生同样的效果。
由上述本发明的实施方式可知，本发明的导光板的主表面上设有不同的第一条状结构与第二条状结构，且这些第一条状结构和第二条状结构形态与光源的出光强度和光形相对应地设计，由此可以使背光模组及显示装置的出光更均匀。
此外，在不同的实施例中，导光板的主表面的靠近入光面的位置可进一步设置微结构，且这些微结构可有效地雾化导光板的靠近入光处的光线，进而可提升整个背光模组及显示装置的亮度均匀度。
虽然本发明已经通过实施例进行如上公开，然而其并非用以限定本发 明，任何所属技术领域的技术人员，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书所界定的范围为准。
【附图标记】
100 导光板
100a 扇形空白区域
100’ 导光板
100” 导光板
110 主体
111 入光面
112 主表面
112a 第一区域
112b 第二区域
120 第一条状结构
120’ 第一条状结构
120” 第一条状结构
121 第一渐缩部
121’ 第一渐缩部
122 第一本体部
122’ 第一本体部
130 第二条状结构
131 第二渐缩部
132 第二本体部
200 光源
201 电路板
202 发光二极管
300 背光模组
310 背光模组
320 背光模组
330 背光模组
400 导光板
410 主体
411 入光面
412 主表面
412a 第一区域
412b 第二区域
420 第一条状结构
421 第一渐缩部
422 第一本体部
430 第二条状结构
431 第二渐缩部
432 第二本体部
500 背光模组
610 第一光源
611 电路板
612 发光二极管
620 第二光源
621 电路板
622 发光二极管
700 导光板
710 主体
711 第一入光面
712 第二入光面
713 主表面
713a 第一区域
713b 第二区域
720 第一条状结构
721 第一渐缩部
722 第一本体部
723 第三渐缩部
730 第二条状结构
731 第二渐缩部
732 第二本体部
733 第四渐缩部
800 导光板
811 入光面
813 主表面
810 主体
810a 平板部
810b 渐缩部
820 第一条状结构
830 第二条状结构
900 导光板
900’ 导光板
910 主体
910’ 主体
910a 渐缩部
910b 第二空白部
911 入光面
913 主表面
913a 空白部
913b 第一空白部
920 第一条状结构
930 第二条状结构
940 微结构
1000 显示装置
1100 显示面板
L1 轴线
L2 轴线
L3 轴线

Claims (16)

  1. 一种导光板，包含：
    主体，其具有至少一个入光面以及与所述至少一个入光面相连接的主表面；
    多个第一条状结构，其排列在所述主表面上的多个第一区域中，其中多个所述第一条状结构的每一者具有第一渐缩部；以及
    多个第二条状结构，其排列在所述主表面上的多个第二区域中，其中所述多个第二条状结构的每一者具有第二渐缩部，且所述多个第一区域与所述多个第二区域互相交错，且所述多个第二条状结构的本身形态不同于所述多个第一条状结构的本身形态。
  2. 如权利要求1所述的导光板，其中
    所述多个第一条状结构与所述多个第二条状结构中的每一者的延伸方向垂直于所述入光面；并且
    所述多个第一渐缩部与所述多个第二渐缩部中的每一者的宽度从较靠近所述入光面的一端朝向较远离所述入光面的另一端渐增。
  3. 如权利要求1所述的导光板，其中
    所述至少一个入光面包含第一入光面以及与所述第一入光面相反的第二入光面，并且
    所述多个第一条状结构的每一者还包含与所述第一渐缩部相反的第三渐缩部；并且
    所述多个第二条状结构的每一者还包含与所述第二渐缩部相反的第四渐缩部。
  4. 如权利要求3所述的导光板，其中所述多个第三渐缩部与所述多个第四渐缩部中的每一者的宽度从较靠近所述第二入光面的一端朝向较远离所述第二入光面的另一端渐增。
  5. 如权利要求3所述的导光板，其中所述多个第一条状结构的每一者的所述第三渐缩部的长度不同于所述多个第二条状结构的每一者的所述第四渐缩部的长度。
  6. 如权利要求1至5中任一项所述的导光板，其中所述多个第一条状结构的每一者的宽度不同于所述多个第二条状结构的每一者的宽度。
  7. 如权利要求1至5中任一项所述的导光板，其中所述多个第一条状结构与所述多个第二条状结构为凹陷结构，且所述多个第一条状结构的每一者的深度不同于所述多个第二条状结构的每一者的深度。
  8. 如权利要求1至5中任一项所述的导光板，其中所述多个第一条状结构与所述多个第二条状结构为凸出结构，且所述多个第一条状结构的每一者的高度不同于所述多个第二条状结构的每一者的高度。
  9. 如权利要求1至5中任一项所述的导光板，其中所述多个第一条状结构的每一者还具有第一本体部，所述多个第二条状结构的每一者还具有第二本体部，所述多个第一条状结构的每一者的所述第一本体部的长度不同于所述多个第二条状结构的每一者的所述第二本体部的长度。
  10. 如权利要求1至5中任一项所述的导光板，其中所述多个第一条状结构的每一者的所述第一渐缩部的长度不同于所述多个第二条状结构的每一者的所述第二渐缩部的长度。
  11. 如权利要求1至10中任一项所述的导光板，其中所述至少一个主表面为出光面或反射面。
  12. 一种背光模组，包含：
    如权利要求1至11中任一项所述的导光板；以及
    至少一个光源，其邻近所述导光板的所述至少一个入光面设置，其中所述光源包含电路板以及设置在所述电路板上的多个发光二极管。
  13. 如权利要求12所述的背光模组，其中
    所述多个第一区域的每一者分别正对于所述多个发光二极管的每一者，且所述多个第二区域的每一者位于两个相邻的所述第一区域之间。
  14. 如权利要求12所述的背光模组，其中
    所述多个第一区域的每一者中的所述多个第一条状结构与所述多个发光二极管的每一者之间具有扇形空白区域。
  15. 如权利要求12所述的背光模组，其中
    在所述多个第一条状结构与所述多个第二条状结构中的每一者的延伸 方向上，所述多个第一区域中的所述多个第一条状结构的每一者与所述多个发光二极管的每一者之间的距离与所述多个第二区域中的所述多个第二条状结构的每一者与所述多个发光二极管的每一者之间的距离相同。
  16. 一种显示装置，包含：
    如权利要求12至15中任一项所述的背光模块；以及
    显示面板，其设置在所述导光板的前方。
PCT/CN2016/086224 2016-05-18 2016-06-17 导光板、背光模组及显示装置 WO2017197696A1 (zh)

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