US20110019437A1 - Light source module and display module - Google Patents

Light source module and display module Download PDF

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Publication number
US20110019437A1
US20110019437A1 US12/564,052 US56405209A US2011019437A1 US 20110019437 A1 US20110019437 A1 US 20110019437A1 US 56405209 A US56405209 A US 56405209A US 2011019437 A1 US2011019437 A1 US 2011019437A1
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US
United States
Prior art keywords
grooves
light source
guide plate
light
light guide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/564,052
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English (en)
Inventor
Super Liao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AU Optronics Corp
Original Assignee
AU Optronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AU Optronics Corp filed Critical AU Optronics Corp
Assigned to AU OPTRONICS CORPORATION reassignment AU OPTRONICS CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIAO, SUPER
Publication of US20110019437A1 publication Critical patent/US20110019437A1/en
Priority to US14/166,860 priority Critical patent/US9176269B2/en
Abandoned legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—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
    • 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
    • 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
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide

Definitions

  • the invention generally relates to a light source module and a display module, and more particularly to a side incident type light source module and a display module having the side incident type light source module.
  • the main components of a liquid crystal display (LCD) apparatus includes an LCD panel and a backlight module, in which the LCD panel is formed by two substrates and a liquid crystal layer disposed between the two substrates, and the backlight module is used for providing the required light source for the LCD apparatus to display images.
  • LCD liquid crystal display
  • the backlight module is divided into a direct type and a side incident type.
  • the direct type backlight module is usually applied to large-sized LCDs, whereas the side incident type backlight module is usually adopted in small-sized LCDs.
  • FIG. 1 represents a schematic view illustrating a conventional side incident type backlight module.
  • a conventional side incident type backlight module 100 includes a light guide plate 110 , a light source 120 , an optical film set 130 , and a reflector 140 , in which the light source 120 is disposed on a side of the light guide plate 110 , and the optical film set 130 and the reflector 140 are respectively disposed above and below the light guide plate 110 .
  • a light guide plate 110 having V-grooves is used.
  • the V-grooves of the light guide plate 110 are disposed on an entire light incident surface 110 a , meaning that the length of the of the V-grooves and the length of the light guide plate 110 are the same. After a light emitted from the light source 120 enters the light guide plate 110 , the light is reflected by a reflector 140 on a bottom surface 110 b of the light guide plate 110 . By using the V-grooves to refract the light, the front emitted luminance and the light source efficiency are improved, thereby generating a planar light source having enhanced brightness.
  • FIG. 2 represents a schematic view illustrating another conventional side incident type backlight module.
  • a side incident type backlight module 200 depicted in FIG. 2 is similar to the side incident type backlight module 100 . The differences are: the V-grooves of a light guide plate 210 of the side incident type backlight module 200 depicted in FIG. 2 are disposed on an entire bottom surface 210 b , the light emitted from a light source 220 enters the light guide plate 210 , the light paths are guided directly upward by a reflector 240 disposed beneath a bottom surface 210 b of the light guide plate 210 , and the V-grooves are used for increasing the brightness of the front emitted light.
  • the V-grooves are disposed on the light emitting surface 110 a of the light guide plate 110 or disposed on the bottom surface 210 b of the light guide plate 210 , when the side incident type backlight modules 100 and 200 are assembled or transported, the V-grooves may collide or cause friction with the optical film set 130 disposed above the light guide plate 110 or the reflector 240 disposed below the light guide plate 210 , thereby damaging the V-grooves and forming a plurality of hot spots. Consequently, not only is the display quality of the LCD apparatus compromised, the production costs are increased because extra optical films are needed to solve the hot spot issue.
  • a light source module is provided, for reducing the hot spots generated during assembly or transport due to collisions of the light guide plate, thereby increasing yield and decreasing production costs.
  • a display module having a favorable display quality is also provided.
  • a light source module including a light guide plate and a light source is provided.
  • the light guide plate has a light incident surface and a light emitting region, and the light guide plate has a plurality of grooves or a plurality of protruding patterns thereon, in which the length of the grooves or the protruding patterns is smaller than the length of the light guide plate.
  • the light source is disposed on the light incident surface of the light guide plate, and the grooves or the protruding patterns of the light guide plate are disposed besides the light incident surface.
  • a display module including a display panel and a light source module is provided.
  • the light source module is disposed on a side of the display panel, in which the light source module includes a light guide plate and a light source.
  • the light guide plate has a light incident surface and a light emitting region, and the light guide plate has a plurality of grooves or a plurality of protruding patterns thereon, in which the length of the grooves or the protruding patterns is smaller than the length of the light guide plate.
  • the light source is disposed on the light incident surface of the light guide plate, and the grooves or the protruding patterns of the light guide plate are disposed besides the light incident surface.
  • the grooves or the protruding patterns on the light guide plate can decrease the area for which the light guide plate may collide or cause friction with other components (such as an optical film set disposed above the light guide plate or a reflector disposed below the light guide plate). Consequently, the light source module can provide a more favorable planar light source, thereby improving the display quality of the display module, improving the yield of the light source module and the display module, and decreasing production costs.
  • FIG. 1 represents a schematic view illustrating a conventional side incident type backlight module.
  • FIG. 2 represents a schematic view illustrating another conventional side incident type backlight module.
  • FIG. 3 represents a schematic diagram illustrating a display module in accordance with one embodiment of the invention.
  • FIG. 4A represents a schematic side view of a backlight module of the display module depicted in FIG. 3 .
  • FIG. 4B represents a schematic top view of the light source module depicted in FIG. 4A .
  • FIG. 4C represents a schematic diagram illustrating a relationship between the depth of the grooves on the light guide plate depicted in FIG. 4A and the length of the light emitting region.
  • FIG. 4D represents a schematic top view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 5A represents a schematic side view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 5B represents a schematic top view of the light guide plate depicted in FIG. 5A .
  • FIG. 6A represents a schematic side view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 6B represents a schematic top view of the light guide plate depicted in FIG. 6A .
  • FIG. 6C represents a schematic diagram illustrating the relationship between the depth of the grooves on the light guide plate depicted in FIG. 6A and the length of the light emitting region.
  • FIG. 7A represents a schematic side view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 7B represents a schematic top view of the light guide plate depicted in FIG. 7A .
  • FIG. 8 represents a schematic side view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 9 represents a schematic side view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 10 represents a schematic top view of the light guide plate in accordance with another embodiment of the invention.
  • FIG. 3 represents a schematic diagram illustrating a display module in accordance with one embodiment of the invention.
  • FIG. 4A represents a schematic side views of a backlight module of the display module depicted in FIG. 3 .
  • a display module 300 includes a display panel 400 and a light source module 500 , in which the light source module 500 is disposed on a side of the display panel 400 , for example below the display panel 400 .
  • the light source module 500 includes a light guide plate 510 and a light source 520 .
  • the light source 520 can be a plurality of point light sources disposed on at least one side of the light guide plate 510 , and the point light sources can be foinied by a plurality of light emitting diodes (LEDs) for providing light.
  • LEDs light emitting diodes
  • the invention is not limited thereto.
  • the light source 520 can be other types of light sources.
  • light emitted from the light source 520 are guided by the light guide plate 510 and transmitted so that the light source module 500 can provide a planar light source having for example, uniform brightness for use by the display panel 400 .
  • the light source module can be a side incident type backlight module
  • the display module can be a LCD module.
  • FIG. 4B represents a schematic top view of the light source module depicted in FIG. 4A .
  • the light guide plate 510 is mainly used to convert the light source 520 into a planar light source transmitting uniform light so that the display panel 400 is provided with the required backlight module light source for display.
  • the light guide plate 510 has an upper surface 511 a , a lower surface 511 b corresponding to the upper surface 511 a , a light incident surface 511 c , a light emitting region 512 a , and a periphery region 512 b around the light emitting region 512 a .
  • the light guide plate 510 has a plurality of grooves 514 a ⁇ 514 f , and the length of the grooves 514 a ⁇ 514 f is smaller than the length of the light guide plate 510 . More specifically, the light emitting region 512 a has a length L, and the lengths of the grooves 514 a ⁇ 514 f in the light emitting region are D 1 ⁇ D 6 , respectively. 0 ⁇ D 1 ⁇ D 6 ⁇ 1 ⁇ 4L is more preferable, although the invention is not limited thereto. Additionally, the length of the periphery region 512 b is A, and the lengths of the grooves are d 1 ⁇ d 6 , respectively.
  • a ⁇ d 1 ⁇ d 6 ⁇ A+1 ⁇ 4L is more preferable, although the invention is not limited thereto.
  • the light source 520 is disposed on a light incident surface 511 c of the light guide plate 510 , and the grooves 514 a ⁇ 514 f of the light guide plate 510 are disposed besides the light incident surface 511 c.
  • the grooves 514 a ⁇ 514 f are disposed on the upper surface 511 a of the light guide plate 510 . Moreover, the grooves 514 a ⁇ 514 f are extending in a direction from the light incident surface 511 c towards the light emitting region 512 a and across the periphery region 512 b . Additionally, since adjacent grooves of the grooves 514 a ⁇ 514 f are connected to each other, there is no space between two opposing sidewalls of the grooves 514 a ⁇ 514 f .
  • the directions of extension for the grooves 514 a ⁇ 514 f are parallel to each other, and the lengths of the extensions are not all the same. Therefore, the lengths of the grooves 514 a ⁇ 514 f can be entirely different from each other, as shown in FIG. 4B where the lengths d 1 ⁇ d 6 of the grooves 514 a ⁇ 514 f are different from each other. Alternatively, the lengths of the grooves 514 a ⁇ 514 f can be partially different, as shown in a light guide plate 510 a depicted in FIG.
  • a spacing distance exists between the sidewalls of the adjacent grooves 516 a ⁇ 516 d .
  • the sidewalls of the grooves 516 a and 516 b are spaced apart from each other at a first distance a 1
  • the sidewalls of the grooves 516 c and 516 d are spaced apart from each other at a second distance a 2
  • the first distance a 1 is substantially different from the second distance a 2 .
  • the first distance a 1 can be substantially the same as the second distance a 2 .
  • FIG. 4C represents a schematic diagram illustrating a relationship between the depth of the grooves on the light guide plate depicted in FIG. 4A and the length of the light emitting region.
  • the depth (or the height) of the grooves 514 a ⁇ 514 f in the light emitting region is shallower than the depth (or the height) of the grooves 514 a ⁇ 514 f in the periphery region 512 b .
  • the depth (or the height) of the grooves 514 a ⁇ 514 f decreases in a linear manner, therefore the depth (or the height) of the grooves 514 a ⁇ 514 f decreases proportionally until smaller than 1 ⁇ 4L at the light emitting region 512 a (where L is the length of the light emitting region 512 a ).
  • the longitudinal sections of the grooves 514 a ⁇ 514 f are V-shaped, for example, and the longitudinal sections of the grooves 514 a ⁇ 514 f have the same angle ⁇ . As shown in FIGS.
  • the depth (or height) of the grooves 517 a ⁇ 517 f can also be decreasing in a nonlinear manner, meaning that the depth (or height) of the grooves 517 a ⁇ 517 f is decreasing irregularly, and the depth (or height) of the grooves 517 a ⁇ 517 f is not decreasing proportionally from the periphery region 512 b towards the light emitting region 512 a .
  • the depth (or height) of the grooves 517 a ⁇ 517 f can change in different manners.
  • the longitudinal section of a plurality of grooves 518 a ⁇ 518 f of a light guide plate 510 d has at least one included angle, meaning that each set of two opposing sidewalls of the grooves 518 a ⁇ 518 f has a different tilt angle.
  • the included angle between the two opposing sidewalls of the groove 518 a can be ⁇ 1
  • the included angle between the two opposing sidewalls of the groove 518 b can be ⁇ 2 , in which the included angle ⁇ 1 and the included angle ⁇ 2 is different from each other.
  • embodiments of the invention are not limited by the position or the type of the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f ) of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 d ).
  • the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f ) are embodied to be disposed on of the upper surface 511 a of light guide plate 510 (or the light guide plates 510 a ⁇ 510 d ), and the longitudinal sections of the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f ) are embodied to be V-shaped, in other embodiments of the invention as shown in FIG.
  • the longitudinal sections of a plurality of grooves 519 a ⁇ 519 f on a light guide plate 510 e can also be U-shaped.
  • the grooves 514 ′ on a light guide plate 510 f can be disposed on a lower surface 511 b , and these different designs are all technical solutions suitable for the invention and do not depart from the scope of the invention for which protection is sought.
  • the light source module 500 of the present embodiment of the invention further includes an optical film set 530 and a reflector 540 .
  • the optical film set 530 is disposed above the light guide plate 510 for improving the distribution of the light source and allowing more uniformity of the emitted light.
  • the optical film set can include a prism sheet, a diffusion plate, a collecting sheet, a brightness enhanced film, a protection film, or a combination of the above-described optical films for further optimization of the emitted light.
  • the type and the number of the optical film set 530 are varied in accordance with the actual demands, and embodiments of the invention do not place limits thereon.
  • the reflector 540 of a high reflectivity, is disposed under the light guide plate 510 and reflects the light from the light source 520 to improve the efficiency of the light source 520 .
  • This design of the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f , the grooves 519 a ⁇ 519 f ) on the upper surface 511 a of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 e ) can alleviate the issue of conventional V-grooves having collisions or causing friction with the optical film set 130 above the light guide plate 110 and generating hot spots.
  • the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ′ ⁇ 518 f ′, the grooves 519 a ⁇ 519 f ) is smaller than the length of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 e ), when the light module 500 is being assembled or transported, the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f , the grooves 5
  • the light source module 500 can provide a better planar light source for improving the display quality of the display module 300 .
  • the groove 514 ′ is disposed on the lower surface 511 b of the groove 514 ′ as shown in FIG. 9 , then during assembly or transportation of the light source module 500 (referring to FIG. 4A ), the groove 514 ′ can also effectively reduce the area which can collide or cause friction with the reflector 540 below the light guide plate 510 f (referring to FIG. 4A ). Consequently, the light source module 500 can provide a better planar light source for improving the display quality of the display module.
  • a sandblasting process can be performed on the surfaces of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 e ), which the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f , the grooves 519 a ⁇ 519 f , the groove 514 ′) are not formed thereon.
  • the lower surface 511 b of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 e ) and the upper surface 511 a of the light guide plate 510 f are both a surface have a plurality of microstructures thereon.
  • the light After the light emitted from the light source 520 enters the light guide plate 510 , the light is reflected by the uneven lower surface 511 b of the light guide plate 510 (or the light guide plates 510 a ⁇ 510 e ).
  • the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f , the grooves 519 a ⁇ 519 f ) to refract the light, and thus the light is made more uniform.
  • the groove 514 ′ on the lower surface 511 b of the light guide plate 510 f is used to refract the light, and thereby the light is made more uniform.
  • a light guide plate 510 g may also not have any grooves, but instead the light guide plate 510 g can have a plurality of protruding patterns 515 a ⁇ 515 f . These protruding patterns 515 a ⁇ 515 f can be disposed on the upper surface or the lower surface of the light guide plate 510 g , in which the length of the protruding patterns 515 a ⁇ 515 f is smaller than the length of the light guide plate 510 g .
  • the length of the protruding patterns 515 a ⁇ 515 f can be completely the same, completely different, or partially the same, the adjacent patterns can be connected to each other or disconnected from each other, the depth or the height of these protruding patterns can be decreasing in a linear manner or in an irregular manner, the longitudinal section has at least one included angle, as well as other characteristics.
  • the light source 520 can be disposed correspondingly on a side of the protruding patterns 515 a ⁇ 515 f , or disposed on at least a side of the light guide plate 510 g (not drawn in FIG. 10 ).
  • the light source 520 is disposed on one side of the light guide plate 510 .
  • Other embodiments of the invention can dispose the light source 520 on the two opposing sides of the light guide plate 510 , where the grooves 514 a ⁇ 514 f (or the grooves 514 a ′ ⁇ 514 f ′, the grooves 516 a ⁇ 516 d , the grooves 517 a ⁇ 517 f , the grooves 518 a ⁇ 518 f , the grooves 519 a ⁇ 519 f ) or the protruding patterns 515 a ⁇ 515 f are extending from the light incident surface 511 c of the light guide plate 510 towards the light emitting region 512 a , corresponding to the light source 520 .
  • embodiments of the invention provide designs of light guide plates for improving the issue of hot spots being generated during assembly or transport of the light source module due to the light guide plate colliding or causing friction with the optical film set disposed thereabove or the reflector disposed therebelow. Consequently, the quality of the emitted light from the light source module is improved, and the display quality of the display module is enhanced. Moreover, since embodiments of the invention decrease the area for which the light guide plate can collide or cause friction with the optical film set or the reflector, the yield of the light source module is improved, thereby reducing production costs.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
US12/564,052 2009-07-23 2009-09-22 Light source module and display module Abandoned US20110019437A1 (en)

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TW098124889A TWI384296B (zh) 2009-07-23 2009-07-23 光源模組與顯示模組
TW98124889 2009-07-23

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120026751A1 (en) * 2010-07-27 2012-02-02 Young Lighting Technology Corporation Light guide unit and light source module
CN103801910A (zh) * 2014-01-21 2014-05-21 苏州环明电子科技有限公司 一种新型导光板网板的制作工艺
US20150131309A1 (en) * 2012-04-23 2015-05-14 Sharp Kabushiki Kaisha Illumination device and display device
US9684114B2 (en) * 2014-10-21 2017-06-20 Boe Technology Group Co., Ltd. Backlight source and display device
US9902312B1 (en) * 2014-08-25 2018-02-27 Scott Buechs Whisker illumination apparatus
US11110855B1 (en) 2018-08-20 2021-09-07 Scott Buechs Whisker illumination apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI588544B (zh) 2015-09-23 2017-06-21 元太科技工業股份有限公司 前光模組及顯示模組
TWI641893B (zh) * 2017-06-02 2018-11-21 奇菱光電股份有限公司 液晶顯示裝置、偏極化導光板以及偏極化導光板之製造方法

Citations (2)

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US5997148A (en) * 1997-06-04 1999-12-07 Enplas Corporation Surface light source device of side light type
US7014351B2 (en) * 2002-12-25 2006-03-21 Hon Hai Precision Ind. Co. Ltd. Planar surface illuminator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5997148A (en) * 1997-06-04 1999-12-07 Enplas Corporation Surface light source device of side light type
US7014351B2 (en) * 2002-12-25 2006-03-21 Hon Hai Precision Ind. Co. Ltd. Planar surface illuminator

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120026751A1 (en) * 2010-07-27 2012-02-02 Young Lighting Technology Corporation Light guide unit and light source module
US8480284B2 (en) * 2010-07-27 2013-07-09 Young Lighting Technology Inc. Light guide unit and light source module having scattering reflective unit
US20150131309A1 (en) * 2012-04-23 2015-05-14 Sharp Kabushiki Kaisha Illumination device and display device
US9671547B2 (en) * 2012-04-23 2017-06-06 Sharp Kabushiki Kaisha Illumination device and display device
CN103801910A (zh) * 2014-01-21 2014-05-21 苏州环明电子科技有限公司 一种新型导光板网板的制作工艺
US9902312B1 (en) * 2014-08-25 2018-02-27 Scott Buechs Whisker illumination apparatus
US9684114B2 (en) * 2014-10-21 2017-06-20 Boe Technology Group Co., Ltd. Backlight source and display device
US11110855B1 (en) 2018-08-20 2021-09-07 Scott Buechs Whisker illumination apparatus

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TW201104317A (en) 2011-02-01
TWI384296B (zh) 2013-02-01
US20140146568A1 (en) 2014-05-29
US9176269B2 (en) 2015-11-03

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