WO2017067340A1 - Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage - Google Patents

Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage Download PDF

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Publication number
WO2017067340A1
WO2017067340A1 PCT/CN2016/098190 CN2016098190W WO2017067340A1 WO 2017067340 A1 WO2017067340 A1 WO 2017067340A1 CN 2016098190 W CN2016098190 W CN 2016098190W WO 2017067340 A1 WO2017067340 A1 WO 2017067340A1
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WO
WIPO (PCT)
Prior art keywords
light
guide plate
light guide
strip
backlight module
Prior art date
Application number
PCT/CN2016/098190
Other languages
English (en)
Chinese (zh)
Inventor
张嘉尹
翁巾婷
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
Priority claimed from US14/918,591 external-priority patent/US9557469B2/en
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 JP2018518961A priority Critical patent/JP2018538658A/ja
Priority to CN201680002793.8A priority patent/CN107209417B/zh
Priority to US15/378,070 priority patent/US10281635B2/en
Publication of WO2017067340A1 publication Critical patent/WO2017067340A1/fr

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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

Definitions

  • the invention relates to a light guiding component and an application thereof, in particular to an application of a light guiding plate and a light guiding plate in a backlight module and a display device.
  • the design of the light guide plate tends to be thinner.
  • the thickness of the light guide plate is reduced, the height of the light emitting diode cannot be reduced to the same thickness as the light guide plate.
  • the light guide plate cannot effectively utilize the light generated by the light emitting diode, and the light guide plate may leak light.
  • a special shape light guide plate is generally used in the backlight module instead of the flat light guide plate.
  • the special shape light guide plate mainly includes a tapered portion and a flat plate portion that connects the tapered portion.
  • the thickness of one end of the tapered portion near the light source is greater than the thickness of the other end of the tapered portion connected to the flat plate portion.
  • the special shape light guide plate can solve the above problem, when the light propagates in the special shape light guide plate, it often leaks from the position where the tapered portion and the flat plate portion are connected, and the optical appearance of the light guide plate is seriously affected.
  • the design of the special shape light guide plate is not easy to be combined with other components in the plastic frame or the backlight module.
  • 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 design of a platform portion, and the component can be adhered.
  • the light guide plate includes a main body and a plurality of platform portions.
  • the body includes a tapered portion and a light guiding portion.
  • the tapered portion has a light incident surface and an inclined surface, and the inclined surface is connected to the light surface.
  • the light guiding portion is connected to the tapered portion, and the light guiding portion has an optical surface connecting the inclined surface.
  • the platform portion is disposed on the tapered portion.
  • Each of the platform portions has a plane, wherein the plane of each of the platform portions is located above the inclined surface of the tapered portion or below the inclined surface of the tapered portion.
  • the backlight module includes a light source and a light guide plate.
  • the light source includes a circuit board and a plurality of light emitting units, and the light emitting units are disposed on the circuit board.
  • the light guide plate is adjacent to the light source and includes a main body and a plurality of platform portions.
  • the body includes a tapered portion and a light guiding portion.
  • the tapered portion has a light incident surface and an inclined surface, and the inclined surface is connected to the light surface.
  • the light guiding portion is connected to the tapered portion, and the light guiding portion has an optical surface connecting the inclined surface.
  • the platform portion is disposed on the tapered portion.
  • Each of the platform portions has a plane, wherein the plane of each of the platform portions is located above the inclined surface of the tapered portion or below the inclined surface of the tapered portion.
  • each of the platform portions are located at different horizontal planes, and each of the platform portions further has a vertical side. Wherein, the vertical side connects the plane and the inclined surface.
  • the inclined surface has a first end edge and a second end edge, and each of the platform portions is located between the first end edge and the second end edge.
  • the plane of each of the platform portions is located at the same horizontal plane as the optical surface.
  • the light guide plate further includes a plurality of extension structures.
  • the extension structure extends from the light incident surface, and each extension structure connects part or all of the platform portion.
  • the light guide plate further includes a plurality of strip microstructures.
  • the strip microstructure is disposed on the body. At least a portion of each of the strip-shaped microstructures is located on the optical surface and is interrupted between the incident surface and the opposite side of the light guiding portion. The portion of each strip-like microstructure located on the optical surface is parallel to the normal to the incident surface. And the length of each strip microstructure is less than the length of the body.
  • the light guide plate further includes a plurality of strip microstructures.
  • Strip microstructures are distributed on the body.
  • Each of the strip-shaped microstructures extends from a bottom edge of the tapered portion toward a direction away from the light-incident surface and is cut between the light-incident surface and an opposite surface of the light guiding portion.
  • the length of each strip microstructure is less than the length of the body.
  • the light guide plate further includes a plurality of strip microstructures.
  • the strip-shaped microstructure extends from the inclined portion to the optical surface and is cut between the incident surface and the opposite surface of the light guiding portion.
  • a portion of each strip microstructure is located on the slope and the other portion is parallel to the normal to the entrance surface. Wherein the length of each strip microstructure is less than the length of the body.
  • the above member has a reflection sheet.
  • the reflective sheet is disposed on the tapered portion of the body and extends to the light guiding portion.
  • the component further has a frame, and the reflective sheet is coupled to the frame and located between the frame and the body.
  • This display device includes the aforementioned backlight module and a display panel.
  • the display panel is located in front of the light guide plate.
  • the platform portion of the light guide plate is designed to be used to set the adhesive so that the components can be bonded and fixed to the light guide plate.
  • the design of the extension structure of the light guide plate can not only increase the attachment area of the adhesive, but also provide the alignment function of the assembler when assembling the light guide plate and the light source.
  • 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 uniformity of the appearance of the light output of the entire backlight module and the display device.
  • FIG. 1 is a side view showing a backlight module according to a first embodiment of the present invention
  • FIG. 2 is a side view showing a backlight module omitting member and a sticker according to a first embodiment of the present invention
  • FIG. 3 is a perspective view showing a backlight module omitting component and a sticker according to a first embodiment of the present invention
  • FIG. 4 is a side view showing a backlight module omitting member and a sticker according to a second embodiment of the present invention
  • FIG. 5 is a side view showing a backlight module omitting member and a sticker according to a third embodiment of the present invention.
  • FIG. 6 is a side view showing a backlight module according to a fourth embodiment of the present invention.
  • FIG. 7 is a perspective view showing a backlight module omitting component and a sticker according to a fourth embodiment of the present invention.
  • FIG. 8 is a top view showing a backlight module according to a fourth embodiment of the present invention.
  • FIG. 9 is a side view showing a backlight module according to a fifth embodiment of the present invention.
  • FIG. 10 is a side view showing a backlight module according to a sixth embodiment of the present invention.
  • FIG. 11 is a side view showing a backlight module omitting member and a fixing member according to a sixth embodiment of the present invention.
  • FIG. 12 is a perspective view showing a backlight module omitting component and a sticker according to a sixth embodiment of the present invention.
  • FIG. 13 is a side view showing a backlight module omitting member and a sticker according to a seventh embodiment of the present invention.
  • FIG. 14 is a side view showing a backlight module omitting member and a sticker according to an eighth embodiment of the present invention.
  • FIG. 15 is a side view showing a backlight module according to a ninth embodiment of the present invention.
  • 16 is a perspective view showing a backlight module omitting member and a fixing member according to a ninth embodiment of the present invention.
  • FIG. 17 is a schematic diagram showing an apparatus of a display device according to an embodiment of the present invention.
  • the backlight module 300 of the present embodiment mainly includes a light guide plate 400, a light source 310 disposed adjacent to the light guide plate 400, a component 320, and a plurality of adhesives 330.
  • the light guide plate 400 includes a main body 410 and a plurality of platform portions 420.
  • the member 320 has a frame body 320a and a reflection sheet 320b.
  • the reflection sheet 320b is coupled to the frame body 320a and interposed between the frame body 320a and the body 410.
  • the adhesive 330 can be mainly disposed on the platform portion 420 of the light guide plate 400 to bond the light guide plate 400 to the component 320, which in the present embodiment is bonded to the frame 320a of the component 320.
  • the body 410 of the light guide plate 400 includes a tapered portion 411 and a light guiding portion 412.
  • the tapered portion 411 has a light incident surface 411a and an inclined surface 411b.
  • the light incident surface 411a is located on the side where the thickness of the tapered portion 411 is large, and the inclined surface 411b is connected to the light surface 411a.
  • the light guiding portion 412 is connected to the side of the tapered portion 411 having a small thickness, and the light guiding portion 412 can be a flat plate structure having a uniform thickness.
  • the light guiding portion 412 has an optical surface 412a, and the optical surface 412a is connected to the inclined surface 411b.
  • the reflection sheet 320b shown in FIG. 1 is covered on the tapered portion 411 of the main body 410 and extends to the light guiding portion 412.
  • the platform portion 420 is disposed on the tapered portion 411, and each of the platform portions 420 has a flat surface 420a.
  • the platform department The 420 are arranged along the first direction D1.
  • the plane 420a of each of the land portions 420 is located below the inclined surface 411b of the tapered portion 411.
  • the plane 420a of each of the platform portions 420 is located at the same level as the optical surface 412a.
  • the adhesive 330 shown in FIG. 1 is disposed on the plane 420a, and the light guide plate 400 can be adhered to the member 320.
  • the light guide plate 400 further includes a plurality of strip-shaped microstructures 430 disposed on the main body 410 , and each strip-shaped microstructure 430 has a length smaller than a length of the main body 410 .
  • the top of the tapered portion 411 of the body 410 has a first edge S1
  • the bottom of the tapered portion 411 has a second edge S2.
  • the second edge S2 is connected to the optical surface 412a, and the first edge S1 is separated from the optical surface 412a by a distance.
  • each strip-shaped microstructure 430 extends from the second edge S2 toward the direction away from the light-incident surface 411a, and is cut off on the optical surface 412a and located on the opposite surface 412b of the light-incident surface 411a and the light guiding portion 412. between. That is, one end of each of the strip-shaped microstructures 430 is connected to the second edge S2 of the tapered portion 411, and the other end is located on the optical surface 412a.
  • the portion of each of the strip-shaped microstructures 430 on the optical surface 412a is parallel to the second direction D2.
  • the second direction D2 referred to herein means a direction parallel to the normal line of the light incident surface 411a.
  • the second direction D2 is perpendicular to the first direction D1.
  • the backlight module 300 of the present embodiment has a visible area and a non-visible area.
  • the visible area means that the light emitting range of the optical surface 412a of the main body 410 can be used as a part of the backlight to be applied to the display panel 1100 as shown in FIG.
  • each of the strip-shaped microstructures 430 is located in the non-visible area and extends from the second edge S2 toward the opposite surface 412b of the light guiding portion 412.
  • FIG. 4 Side view of the light module.
  • the structure of the backlight module 300a shown in FIG. 4 is substantially the same as that of the foregoing backlight module 300, except that the strip-shaped microstructures 430a of the light guide plate 400a of the backlight module 300a have different structural designs.
  • the strip-shaped microstructure 430a extends from the tapered portion 411 onto the optical surface 412a and is cut between the light-incident surface 411a and the opposite surface 412b of the light guiding portion 412. That is, one end of each strip-shaped microstructure 430a is located on the tapered portion 411, and the other end is located on the optical surface 412a.
  • the backlight module 300a also has a visible area and a non-visible area. A portion of each of the strip-shaped microstructures 430 on the tapered portion 411 is located in the non-visible region, and a portion of each of the strip-shaped microstructures 430a on the optical surface 412a is also located in the non-visible region.
  • the adhesive member 330 as shown in FIG. 1 can also be disposed on the platform portion 420 of the light guide plate 400a to adhere the light guide plate 400a to the member 320 as shown in FIG.
  • FIG. 5 there is shown a side view of a backlight module in accordance with a third embodiment of the present invention.
  • the structure of the backlight module 300b shown in FIG. 5 is substantially the same as that of the foregoing backlight module 300, except that the strip-shaped microstructures 430b of the light guide plate 400b of the backlight module 300b have different arrangement positions.
  • the backlight module 300b has a visible area and a non-visible area, wherein the tapered portion 411 is located in the non-visible area, and the second edge S2 of the tapered portion 411 is spaced apart from the visible area.
  • the strip-shaped microstructures 430b are disposed on the optical surface 412a in the non-visible area and at a distance from the second edge S2 of the tapered portion 411.
  • the adhesive member 330 as shown in FIG. 1 can also be disposed on the platform portion 420 of the light guide plate 400b to adhere the light guide plate 400b to the member 320 as shown in FIG.
  • the component 520 includes a frame 520a and a reflective sheet 520b. The reflective sheet 520b is coupled to the frame 520a and located between the frame 520a and the body 610.
  • FIG. 6 and FIG. 7 are respectively a side view of a backlight module according to a fourth embodiment of the present invention, and a perspective view of the backlight module omitting component and the adhesive.
  • the backlight module 500 of the present embodiment mainly includes a light guide plate 600, a light source 510 adjacent to the light guide plate 600, a component 520, and a plurality of adhesives. 530.
  • the light guide plate 600 includes a main body 610 , a plurality of platform portions 620 , and a plurality of extension structures 630 .
  • the extension structure 630 connects some or all of the platform portion 620.
  • the adhesive 530 can be mainly disposed on the extending structure 630 of the light guide plate 600 and the platform portion 620 to bond the light guide plate 600 to the component 520.
  • the design of the extension structure 630 can increase the attachment area of the adhesive 530.
  • the body 610 of the light guide plate 600 includes a tapered portion 611 and a light guiding portion 612 .
  • the tapered portion 611 has a light incident surface 611a and an inclined surface 611b.
  • the light incident surface 611a is located on the side where the thickness of the tapered portion 611 is large, and the inclined surface 611b is connected to the light surface 611a.
  • the light guiding portion 612 is connected to the side of the tapered portion 611 having a small thickness, and the light guiding portion 612 can be a flat plate structure having a uniform thickness.
  • the light guiding portion 612 has an optical surface 612a, and the optical surface 612a is connected to the inclined surface 611b.
  • the platform portion 620 is disposed on the tapered portion 611, and each of the platform portions 620 has a plane 621.
  • the extension structure 630 extends from the light incident surface 611a, and the extension structure 630 has a surface 631.
  • the plane 621 of the platform portion 620 is at the same level as the surface 631 of the extension structure 630. Further, as viewed from a side view of the light guide plate 600 (as shown in FIG. 6), the plane 621 of each of the land portions 620 is located below the inclined surface 611b of the tapered portion 611.
  • the plane 621 of each of the platform portions 620, the surface 631 of the extended structure 630, and the optical surface 612a are all located on the same horizontal plane.
  • the light guide plate 600 can be adhered to the member 520 by simultaneously providing the adhesive 530 on the flat surface 420a and the surface 631.
  • the light source 510 includes a circuit board 511 and a plurality of light emitting diodes 512 disposed on the circuit board 511.
  • the extension structure 630 is located between two adjacent light emitting diodes 512. Therefore, when the assembler assembles the light source 510 and the light guide plate 600, the design of the extension structure 630 can be used to align the light-emitting diode 512 into the light surface 611a. Therefore, the extension structure 630 is convenient for the assembler to assemble the light guide plate 600 to the alignment light source. 510 features.
  • FIG. 8 is a top view showing a backlight module according to a fourth embodiment of the present invention.
  • the frame of the component The body 520 is comb-shaped as viewed from a top view, and includes a plurality of extension portions 521 corresponding to the platform portion 620 of the light guide plate 600 and the extension structure 630. These extensions 521 are adhered to the platform portion 620 and the extension structure 630 by overlapping.
  • the light guide plate 600 further includes a plurality of strip microstructures 640 disposed on the main body 610 . More specifically, the structural design and arrangement of the strip-shaped microstructures 640 are substantially the same as those of the strip-shaped microstructures 430, 430a, and 430b shown in FIGS. 1 to 5, so This will not be repeated here.
  • FIG. 9 there is shown a side view of a backlight module in accordance with a fifth embodiment of the present invention.
  • the structure of the backlight module 500a of the present embodiment is substantially the same as that of the backlight module 500 shown in FIG. 6, except that the light guide plate 600a of the backlight module 500a has a different structural design.
  • the extended structure 630a of the light guide plate 600a includes a surface 631a and a recess 632a.
  • the recess 632a is mainly used to set the lower adhesive 650.
  • the extending structure 630a of the light guide plate 600a is located on the circuit board 511 of the light source. Therefore, the light guide plate 600a can be adhered to the circuit board 511 of the light source through the lower adhesive 650.
  • the backlight module 700 of the present embodiment mainly includes a light guide plate 800, a light source 710 adjacent to the light guide plate 800, a component 720, and a plurality of adhesives 730.
  • the light guide plate 800 includes a main body 810 and a plurality of platform portions 820.
  • the adhesive 730 may be mainly disposed on the platform portion 820 of the light guide plate 800 to adhere the light guide plate 800 to the member 720.
  • FIG. 11 and FIG. 12 are respectively a side view and a perspective view showing a backlight module omitting member and a fixing member according to a sixth embodiment of the present invention.
  • the body 810 of the light guide plate 800 includes a tapered portion 811 and a light guiding portion 812.
  • the tapered portion 811 has a light incident surface 811a and an inclined surface 811b.
  • the light incident surface 811a is located on the side where the thickness of the tapered portion 811 is large, and the inclined surface 811b is connected to the light surface 811a.
  • the light guiding portion 812 is connected to the side of the tapered portion 811 having a small thickness, and the light guiding portion 812 may be a flat plate structure having a uniform thickness.
  • Light guiding portion 812 has an optical surface 812a, and the optical surface 812a is connected to the inclined surface 811b.
  • the platform portion 820 is disposed on the tapered portion 811, and each of the platform portions 820 has a flat surface 821 and a vertical side surface 822.
  • the platform portions 420 are arranged in a first direction D3.
  • the vertical side surface 822 connects the plane 821 and the inclined surface 811b of the tapered portion 811.
  • the plane 821 of each of the land portions 820 is located above the inclined surface 811b of the tapered portion 811 and is located on a different plane from the optical surface 812a.
  • the top of the tapered portion 811 of the body 810 has a first edge S3, and the bottom of the tapered portion 811 has a second edge S4.
  • the second edge S4 is connected to the optical surface 812a, and the first edge S3 is separated from the optical surface 812a by a distance.
  • the platform portion 820 is located between the first edge S3 and the second edge S4. That is, the platform portion 820 is not in contact with the optical surface 812a.
  • the adhesive 730 shown in FIG. 10 is disposed on the plane 821, and the light guide plate 800 can be adhered to the member 720.
  • the light guide plate 800 further includes a plurality of strip-shaped microstructures 830 disposed on the main body 810 , and each of the strip-shaped microstructures 830 has a length smaller than the length of the main body 810 .
  • each strip-shaped microstructure 830 extends from the second edge S4 in a direction away from the light-incident surface 811a, and is cut off on the optical surface 812a and located on the opposite side of the light-incident surface 811a and the light-guiding portion 812. Between 812b.
  • each of the strip-shaped microstructures 830 is connected to the second edge S4 of the tapered portion 811, and the other end is located on the optical surface 812a.
  • the portion of each of the strip-shaped microstructures 830 on the optical surface 812a is parallel to the second direction D4.
  • the second direction D4 referred to herein means a direction parallel to the normal line of the light incident surface 811a.
  • the second direction D4 is perpendicular to the first direction D3.
  • the backlight module 700 of the present embodiment has a visible area and a non-visible area.
  • Each of the strip-shaped microstructures 830 is located in the non-visible area and extends from the second edge S4 toward the opposite side 812b of the light guiding portion 812.
  • FIG. 13 there is shown a back according to a seventh embodiment of the present invention.
  • the structure of the backlight module 700a shown in FIG. 13 is substantially the same as that of the foregoing backlight module 700, except that the strip-shaped microstructures 830a of the light guide plate 800a of the backlight module 700a have different structural designs.
  • the strip-shaped microstructures 830a extend from the tapered portion 811 onto the optical surface 812a and are cut between the light incident surface 811a and the opposite surface 812b of the light guiding portion 812. That is, one end of each strip-like microstructure 830a is located on the tapered portion 811, and the other end is located on the optical surface 812a.
  • the backlight module 700a also has a visible area and a non-visible area. A portion of each of the strip-shaped microstructures 830a on the tapered portion 811 is located in the non-visible area, and a portion of each of the strip-shaped microstructures 830 on the optical surface 812a is also located in the non-visible area.
  • the adhesive 730 as shown in FIG. 10 can also be disposed on the platform portion 820 of the light guide plate 800a to adhere the light guide plate 800a to the member 720 as shown in FIG.
  • FIG. 14 there is shown a side view of a backlight module in accordance with an eighth embodiment of the present invention.
  • the structure of the backlight module 700b shown in FIG. 14 is substantially the same as that of the foregoing backlight module 700, except that the strip-shaped microstructures 830b of the light guide plate 800b of the backlight module 700b have different arrangement positions.
  • the backlight module 700b has a visible area and a non-visible area, wherein the tapered portion 811 is located in the non-visible area, and the second edge S4 of the tapered portion 811 is spaced apart from the visible area.
  • the strip-shaped microstructure 830b is disposed on the optical surface 812a in the non-visible area and spaced apart from the second edge S4 of the tapered portion 811 by a distance.
  • the adhesive member 330 as shown in FIG. 1 can also be disposed on the platform portion 820 of the light guide plate 800b to adhere the light guide plate 800b to the member 320 as shown in FIG.
  • the backlight module 900 of the present embodiment mainly includes a light guide plate 910, a light source 920 adjacent to the light guide plate 910, a component 930, and a plurality of adhesives 940.
  • the light guide plate 910 includes a main body 911 , a plurality of platform portions 912 , and a plurality of extension structures 913 .
  • the extension structure 913 connects part or all of the platform Part 912.
  • the adhesive 940 can be mainly disposed on the extending structure 913 of the light guide plate 910 and the platform portion 912 to bond the light guide plate 910 to the component 930.
  • the design of the extension structure 913 can increase the attachment area of the adhesive 913.
  • the main body 911 of the light guide plate 910 includes a tapered portion 911a and a light guiding portion 911b.
  • the tapered portion 911a has a light incident surface 911c and an inclined surface 911d.
  • the light incident surface 911c is located on the side where the thickness of the tapered portion 911a is large, and the inclined surface 911d is connected to the light incident surface 911c.
  • the light guiding portion 911b is connected to the side of the tapered portion 911a having a small thickness, and the light guiding portion 911b can have a flat plate structure having a uniform thickness.
  • the light guiding portion 911b has an optical surface 911e, and this optical surface 911e is connected to the inclined surface 911d.
  • the platform portion 912 is disposed on the tapered portion 911a and located between the first edge S5 and the second edge S6 of the tapered portion 911a.
  • Each of the platform portions 912 has a plane 912a.
  • the platform portion 912 of the present embodiment is located at the extension structure 913 extending from the light incident surface 911c, and the extension structure 913 has a surface 913a.
  • the plane 912a of the platform portion 912 is at the same level as the surface 913a of the extension structure 913.
  • the plane 912a of each of the land portions 912 is located above the inclined surface 911d of the tapered portion 911a as viewed from a side view of the light guide plate 910.
  • the plane 912a of each of the platform portions 912, the surface 913a of the extended structure 913, and the optical surface 911e are all located on the same horizontal plane.
  • the adhesive 940 is disposed on the plane 912a and the surface 913a, and the light guide plate 910 can be adhered to the component 930.
  • the light source 920 includes a circuit board 921 and a plurality of light emitting diodes 922 disposed on the circuit board 921.
  • the extension structure 913 is located between two adjacent light emitting diodes 922. Therefore, when the assembler assembles the light source 920 and the light guide plate 910, the design of the extension structure 913 can be used to align the LED 922 into the light surface 911c. Therefore, the extension structure 913 is convenient for the assembler to assemble the light guide plate 910 to the alignment light source. The function of the 920.
  • the light guide plate 910 further includes a plurality of strip microstructures 950 disposed on the main body 911 . More specifically, the relevant article The structural design and arrangement of the microstructures 950 are substantially the same as those of the strip microstructures 830, 830a and 830b shown in FIGS. 10 to 14 above, and thus will not be described again.
  • the display device 1000 of the present embodiment mainly includes a backlight module 500 and a display panel 1100 as shown in FIG. 6.
  • the display panel 1100 is located in front of the light guide plate 600.
  • the component 520 of the backlight module 500 shown in FIG. 6 includes a frame 520a and a reflection sheet 520b.
  • the member 520 has the reflection sheet 520b without the frame 520a shown in FIG. 6. Therefore, in the present embodiment, the adhesive 530 mainly bonds the light guide plate 600 to the reflection sheet 520b of the member 520.
  • the display device 1000 further includes a light-shielding tape 1300 for bonding the display panel 1100 to the backlight module 500, and the reflective sheet 520b and the light-shielding tape 1300 are disposed between the component 520 and the display panel 1100.
  • the reflective sheet 520b can be overlaid on the tapered portion 611 of the light guide plate 600 and extends over the light guiding portion 612.
  • the light blocking tape 1300 is located above the reflective sheet 520b to prevent light leakage from the light emitting diode 512.
  • the backlight module 500 shown in FIG. 6 is applied to the display device 1000 for illustrative purposes only, and is not intended to limit the present invention.
  • the backlight modules of the other embodiments described above, such as the backlight modules 300, 300a, 300b, 500a, 700, 700a, 700b, and 900, can also be applied to a display device to produce the same effect.
  • the platform portion of the light guide plate can be designed to provide a fixing member so that the member can be bonded and fixed to the light guide plate.
  • the design of the extension structure of the light guide plate can not only increase the attachment area of the adhesive, but also provide the alignment function of the assembler when assembling the light guide plate and the light source.
  • 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 uniformity of the appearance of the light output of the entire backlight module and the display device.

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  • Liquid Crystal (AREA)

Abstract

L'invention concerne une plaque de guidage de lumière (400), un module de rétroéclairage (300) et un appareil d'affichage (1000). La plaque de guidage de lumière (400) comprend un corps principal (410) et une pluralité de parties de plate-forme (420). Le corps principal (410) comprend une partie conique (411) et une partie de guidage de lumière (412). La partie conique (411) a une surface d'incidence de la lumière (411a) et une surface inclinée (411b), et la surface inclinée (411b) est reliée à la surface d'incidence de la lumière (411a). La partie de guidage de la lumière (412) est reliée à la partie conique (411), et la partie de guidage de lumière (412) a une surface optique (412a) qui est reliée à la surface inclinée (411b). La partie de plate-forme (420) est disposée sur la partie conique (411). Chacune des parties de plate-forme (420) comprend une surface plate (420a). La surface plate (420a) de chacune des parties de plate-forme (420) est située au-dessus de la surface inclinée (411b) de la partie conique (411) ou située au-dessous de la surface inclinée (411b) de la partie conique (411).
PCT/CN2016/098190 2012-03-16 2016-09-06 Plaque de guidage de lumière, module de rétroéclairage et dispositif d'affichage WO2017067340A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2018518961A JP2018538658A (ja) 2015-10-21 2016-09-06 導光板、バックライトモジュール及び表示装置
CN201680002793.8A CN107209417B (zh) 2015-10-21 2016-09-06 导光板、背光模块及显示设备
US15/378,070 US10281635B2 (en) 2012-03-16 2016-12-14 Light guide plate, backlight module and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/918,591 US9557469B2 (en) 2012-03-16 2015-10-21 Light guide plate, backlight module and display device
US14/918,591 2015-10-21

Publications (1)

Publication Number Publication Date
WO2017067340A1 true WO2017067340A1 (fr) 2017-04-27

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JP (1) JP2018538658A (fr)
CN (2) CN205991384U (fr)
TW (1) TWI601912B (fr)
WO (1) WO2017067340A1 (fr)

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CN110543037B (zh) * 2018-12-05 2022-06-28 友达光电股份有限公司 显示装置

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CN205991384U (zh) 2017-03-01
CN107209417B (zh) 2020-08-18
TWI601912B (zh) 2017-10-11
CN107209417A (zh) 2017-09-26
TW201715174A (zh) 2017-05-01
JP2018538658A (ja) 2018-12-27

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