WO2014194636A1 - 背光模组及显示装置 - Google Patents

背光模组及显示装置 Download PDF

Info

Publication number
WO2014194636A1
WO2014194636A1 PCT/CN2013/089461 CN2013089461W WO2014194636A1 WO 2014194636 A1 WO2014194636 A1 WO 2014194636A1 CN 2013089461 W CN2013089461 W CN 2013089461W WO 2014194636 A1 WO2014194636 A1 WO 2014194636A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide plate
light guide
light
light source
backlight module
Prior art date
Application number
PCT/CN2013/089461
Other languages
English (en)
French (fr)
Inventor
龙君
***
宋勇
Original Assignee
北京京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京京东方光电科技有限公司 filed Critical 北京京东方光电科技有限公司
Publication of WO2014194636A1 publication Critical patent/WO2014194636A1/zh

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms
    • G02B5/045—Prism arrays
    • 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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H04N13/32—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays using arrays of controllable light sources; using moving apertures or moving light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—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

  • Embodiments of the present invention relate to a backlight module and a display device. Background technique
  • stereoscopic display that is, 3D (three-dimens iona) display
  • 3D technology can make the picture stereoscopic, and the image is no longer limited to the screen plane, as if it can walk out of the screen, giving the audience an immersive feeling.
  • the classification of 3D display technology is numerous, the basic principle is similar, that is, different images are received by the human eye, because the eyes of the person are separated by about 65 mm, and the difference in position causes the left eye and the right eye to see different.
  • the two-dimensional image, and then the brain is superimposed and regenerated by the information of different two-dimensional images to form an image with the effects of the front, the back, the left, the right, the far, and the like.
  • the conventional eye-eye 3D display device is composed of a display panel and a grating, wherein the grating comprises a plurality of grating units, and the grating is arranged in front of the display panel in a certain manner, and the grating is divided to make the eyes of the person see different Visual images that produce a three-dimensional look.
  • the display brightness is lowered.
  • Embodiments of the present invention provide a backlight module and a display device, including the display device of the backlight module, which can make a stereoscopic feeling to a person who sees a picture without a grating, thereby improving display brightness.
  • the present invention provides a backlight module, including: a first light guide plate and a second light guide plate stacked in a stack; and a first light source disposed opposite to the first light guide plate and a second light source disposed opposite to the second light guide plate, Wherein the first light source and the second light source are located on opposite sides of the two light guide plates; wherein, on the upper surface of the first light guide plate and the second light guide plate or on the first light guide plate And
  • the lower surface of the second light guide plate is provided with a microgroove structure, and the farther the microgroove structure on each of the light guide plates is from the opposite light source, the higher the height of the microgroove structure.
  • the slot structure forms a plurality of rows on the light guide plate, and the farther the distance from the opposite light source is, the smaller the pitch of the adjacent two rows is.
  • each row includes a plurality of microgroove structures, and the microgrooves in the same row are evenly distributed.
  • the further away from the opposite source the more microgrooves each row includes.
  • the slot structure is a triangular groove.
  • the microchannel structure is a right triangle groove.
  • the inclined angles of the inclined sides of the right-angled triangular grooves on the light guide plate are the same.
  • the inclined angle of the right-angled triangular groove is 40 degrees. -60° between.
  • the height of the light source is the same as the height of the light guide plate.
  • the embodiment of the present invention provides a display device, including: a backlight module and a display screen, wherein the backlight module is any backlight module provided by the embodiment of the present invention.
  • FIG. 1 is a cross-sectional structural view of a backlight module according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an optical path of light emitted by a first light source according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of an optical path of light emitted by a second light source according to an embodiment of the present invention
  • FIG. 5 is a schematic structural view of a second light guide plate according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of another second light guide plate according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of another second light guide plate according to an embodiment of the present invention. Reference mark:
  • the embodiment of the present invention provides a backlight module 1 including: a first light guide plate 21 and a second light guide plate 22 stacked in a stack; a first light source 11 and a second light guide plate 22 disposed opposite to the first light guide plate 21 a second light source 12 disposed oppositely, and the first light source 11 and the second light source 12 are located on opposite sides of the two light guide plates; wherein, the first light guide plate 21 and the second light guide plate
  • the upper surface of the 22 or the lower surface of the first light guide plate 21 and the second light guide plate 22 are provided with a microgroove structure 30, and the distance between the microgroove structure 30 on each of the light guide plates and the opposite light source is Far, the height of the microgroove structure is higher.
  • the first light guide plate and the second light guide plate are stacked, and the first light guide plate is located on the second light guide plate, or the second light guide plate is located on the first light guide plate.
  • the positions of the first light guide plate and the second light guide plate are not limited thereto.
  • the first light guide plate deflects the light emitted by the first light source in one direction, that is, the light emitted by the first light source is blocked by the left eye (or the right eye) of the person.
  • a second light source is disposed opposite to the second light guide plate, and the second light guide plate is configured to deflect the light emitted by the second light source in another direction, that is, the light emitted by the second light source is The right eye (or left eye) receives.
  • the first light guide plate deflects the light of the first light source to the right side
  • the second light guide plate deflects the light emitted by the second light source to the left side, wherein the The left "right” is set along the optical path of the backlight module, bounded by the normal of the backlight module.
  • First light guide The light deflected to the right by the plate is received by the left eye of the person, and the light deflected to the left by the second light guide plate is received by the right eye of the person, as shown in FIG.
  • a first light source 11 is disposed opposite to the first light guide plate 21, and the first light guide plate 21 causes the light emitted from the first light source 11 to be deflected in the right direction.
  • the light e and the light f emitted from the first light source 11 are deflected to the right by multiple reflections and refractions of the light guide plate, i.e., the light emitted by the first light source is received by the left eye of the person.
  • a second light source 12 is disposed opposite to the second light guide plate 22, and the second light guide plate 22 is configured to deflect the light emitted by the second light source 12 to the left direction, as shown in FIG.
  • the light ray a, the light ray c, and the light ray b emitted by the second light source 12 are deflected to the left side after being repeatedly reflected and refracted by the light guide plate, that is, the light emitted by the second light source 12 is received by the right eye of the person. Since the light emitted by the first light source and the second light source is deflected in two directions by the light guide plate and respectively received by the left eye and the right eye of the human eye, the left eye view and the right eye view will see different two-dimensional images. Then, the brain superimposes the information of different two-dimensional images to form a three-dimensional effect.
  • the structures of the first light guide plate and the second light guide plate may be the same, but in order to ensure the deflection of the light corresponding to the light source of each light guide plate, according to the light source when the backlight module is mounted Position, the orientation of the two light guide plates is different when installed.
  • a microgroove structure is provided on an upper surface of the first light guide plate and the second light guide plate or on a lower surface of the first light guide plate and the second light guide plate.
  • a microgroove structure may be disposed on an upper surface of the first light guide plate and the second light guide plate, or may be a lower surface of the first light guide plate 21 and the second light guide plate 22 as shown in FIG. Set the microgroove structure. The farther the microgroove structure on each of the light guide plates is from the opposite light source, the higher the height of the microgroove structure, that is, the height of the microgroove structure along the optical path of the light source opposite thereto. As shown in FIG.
  • the greater the loss of light from the light source the greater the loss of light from the light source, that is, the intensity of the light at the position closer to the light source on the light guide plate is greater, and the intensity of the light at a position farther from the light source is smaller, farther away from the light source.
  • the light is deflected by the microgroove structure at a position far from the light source, and the uniformity of light emitted through the light guide plate can be further improved.
  • the light emitted by the light source is prevented from being emitted and refracted only at a position close to the light guide plate, the intensity of the light at a position far from the light source is small, and the backlight module emits unevenly.
  • the microgroove structure is disposed on the lower surface of the light guide plate, and the height of the microgroove structure is the microgroove structure from the lower surface of the light guide plate
  • the maximum distance; the microgroove structure is disposed on the upper surface of the light guide plate, and the height of the microgroove structure is the maximum distance of the microgroove structure from the surface of the light guide plate.
  • the embodiment of the present invention provides a backlight module, wherein the backlight module includes a first light guide plate and a second light guide plate stacked in a stack; a first light source disposed opposite to the first light guide plate and opposite to the second light guide plate a second light source, and the first light source and the second light source are located on opposite sides of the two light guide plates, wherein the first light guide plate deflects light emitted by the first light source in one direction, that is, Light emitted by a light source is received by a left eye (or right eye) of the person; correspondingly, a second light source is disposed opposite to the second light guide plate, and the second light guide plate is used to make the light emitted by the second light source One direction is deflected such that light emitted by the second source is received by the right eye (or left eye) of the person.
  • the left eye and the right eye Since the first left eye and the right eye are received, the left eye and the right eye will see different two-dimensional images, and then the information of different two-dimensional images is superimposed by the brain to form a three-dimensional effect without setting a grating.
  • the light is deflected by the microgroove structure to improve the uniformity of illumination of the backlight module.
  • the micro-slot structure forms a plurality of rows on the light guide plate, and the distance from the opposite light source is smaller, and the spacing between adjacent rows is smaller.
  • the first light guide plate has the same arrangement as the micro groove structure on the second light guide plate, and the principle is the same.
  • the pitch p of the adjacent two rows of microgroove structures closer to the light source is greater than the pitch k of the adjacent two rows of microgroove structures farther from the source.
  • the microgroove structure is formed in a plurality of rows in the direction of 101.
  • the 101 direction may be the optical path direction of the light source opposite to the light guide plate. As shown in FIG. 4, the 101 direction is the optical path direction of the second light source 12. Since the light guide plate is closer to the light source, the intensity of the light emitted by the light source is strong, and the distance from the light source is far, the intensity of the light is weak.
  • the embodiment of the present invention is designed such that: the farther the light guide plate is from the opposite light source, the adjacent two The smaller the pitch of the micro-groove structure of the row, the denser the distribution of the micro-groove structure at the position of the light guide plate at a distance from the light source, the utilization of light emitted by the light source can be improved, and the uniformity of illumination of the backlight module can be further improved.
  • the micro-groove structure on the light guide plate is formed in multiple rows, which may be as shown in FIG. 5, each row includes a micro-groove structure, and the one micro-groove structure runs through the entire light guide plate, so that Each row includes a plurality of micro-groove structures, and a plurality of micro-groove structures in the same row are evenly distributed to ensure The uniformity of light exiting after being reflected and refracted by the microgroove structure.
  • the present embodiment is designed such that the distance is
  • Each row in the vicinity of the light source includes fewer micro-grooves, so that the light emitted by the light source can reach the position where the light guide plate is farther away, and each row is included at a position farther from the light source.
  • the micro-groove structure has many structures, so that the light at a position far away from the light source can be reflected and refracted by more micro-groove structures, thereby improving the uniformity of illumination of the backlight module.
  • the slot structure is a triangular groove.
  • the slot structure is a right-angled triangular slot.
  • each of the right-angled triangular grooves includes a right-angled side 30a and a slanted side 30b.
  • the length of the right-angled side perpendicular to the lower surface of the light guide plate is the depth or height of the groove.
  • the inclined side of the right triangle is opposite to the light source opposite to the light guide plate.
  • the inclined sides of the right-angled triangular grooves on the light guide plate 21 are opposed to the first light source 11; the inclined sides of the right-angled triangular grooves on the light guide plate 22 are opposed to the second light source 12.
  • the inclined angles of the inclined sides of the right-angled triangular grooves on the light guide plate are the same.
  • the angle between each inclined side 30b of the light guide plate and the right angle side 30a is an inclination angle, and the inclination angles ⁇ on the light guide plate are the same.
  • the light guide plate is not only easy to manufacture, but also easy to form and the light is emitted within a certain range, and the uniformity of light emitted by the light guide plate can be further ensured.
  • the inclined angle of the right-angled triangular groove is 40 degrees. -60. between.
  • the angle of inclination of the right triangle is, for example, 40°, 50° or 60°. This not only avoids total reflection, but also because the maximum angle at which the human left and right eyes receive light is typically 70°, and the minimum angle is typically 10° if the angle of inclination is designed to be 40. -60.
  • the angle of the light emitted by the light guide plate is 5° - 35 with respect to the direction perpendicular to the display device (i.e., perpendicular to the light guide plate).
  • the sum of the angles of the light emitted by the light guide plate deflected in two directions is 10. -70. Between, therefore, it is guaranteed that people receive light at an angle of 10° -70. Between, to ensure that the human eye receives images normally.
  • the height of the light source is the same as the height of the light guide plate. This can increase the utilization of light emitted by the light source.
  • the backlight module further includes: a frame and a support member, wherein the frame and the support member are used for fixing and supporting the light guide plate and the light source.
  • the backlight module further includes a frame.
  • the frame 2 and the first support member 31 and the second support member 32 are used to support the components of the entire backlight module, and the support member is used to support other components of the backlight module.
  • the first support member 31 supports the prism sheet 5, the diffusion sheet 6, and the display screen 7.
  • the second support member 32 is for supporting the first light source 11.
  • the components of the backlight module are not limited to the above description.
  • the backlight module may further include a reflective sheet 4 .
  • Other related components of the backlight module can be designed as in conventional technology.
  • the first light guide plate 21 and the second light guide plate 22 can also be bonded together by the transparent glue 8 before assembly, thereby further facilitating the installation of the backlight module.
  • the embodiment of the present invention provides a display device, including: a backlight module and a display screen, wherein the backlight module is any backlight module provided by the embodiment of the present invention.
  • the display device may be a display device such as a liquid crystal display or an electronic paper, and any product or component having a display function such as a television, a digital camera, a mobile phone, a tablet computer or the like including the display device.
  • the two light sources of the backlight module are sequentially switched on and turned on.
  • the second light source 12 when the second light source 12 is turned on, the light emitted from the second light source 12 is emitted through the two light guide plates, and the light emitted from the light guide plate is directed generally in one direction, for example, the left side.
  • the light ray a emitted by the second light source 12 is reflected by the inclined side of the right triangle of the lower light guide plate 22 and then deflected to the left side; the light ray c emitted by the second light source 12 passes through the right triangle of the lower light guide plate 22.
  • the light emitted by the second light source 12 is refracted by the inclined edge of the right triangle on the lower light guide plate 22, and the light b reflected by the reflective sheet passes through the lower light guide plate.
  • the inclined edge of the right triangle on 22 is reflected, it is refracted by the inclined side of the right triangle of the upper light guide plate 21 and then deflected to the left side.
  • the light emitted from the second light source 12 is reflected and refracted by the lower light guide plate and the upper light guide plate, and the emitted light is deflected to the left side.
  • Fig. 3 the light emitted from the second light source 12 is reflected and refracted by the lower light guide plate and the upper light guide plate, and the emitted light is deflected to the left side.
  • the light from the first light source 11 passes through the two light guide plates, and the light emitted from the light guide plate is directed toward the other direction, for example, the right side.
  • the light e emitted by the first light source 11 is refracted by the inclined side of the right triangle of the upper light guide plate 21, and then is repeatedly emitted from the upper light guide plate through the multiple refraction of the lower light guide plate, and the emitted light is directed to the right.
  • the side light is deflected; the light ray f emitted from the first light source 11 is refracted by the inclined side of the right triangle on the upper light guide plate 21 and is directly deflected to the right side.
  • the light emitted from the first light source 11 is reflected and refracted multiple times by the lower light guide plate and the upper light guide plate, and the emitted light is deflected to the right side.
  • the images displayed on the display screen respectively reach the left and right eyes of the person through different directions, so that the eyes of the person see different visual images and generate a stereoscopic feeling.
  • optical path of the light in the drawings in the embodiment of the present invention is only partially reflected and Refraction, which is mainly used to analyze the deflection of light emitted by each light source.
  • the light emitted by each light source is reflected and refracted multiple times by the upper light guide plate and the lower light guide plate, and finally emitted from the upper light guide plate.
  • the light from the light source located on the left side of the light guide plate is deflected to the right after being emitted from the upper light guide plate, and is received by the left eye of the person;
  • the light is finally deflected to the left after being emitted from the upper light guide plate, and is received by the right eye of the person.
  • the images displayed on the display screen pass through the left and right eyes respectively in different directions, so that the eyes of the person see different visual images, resulting in a stereoscopic feeling.
  • the backlight module includes two light guide plates arranged in a stack, and a light source disposed on each side of the light guide plate opposite to a light guide plate, wherein The light emitted by the light source on the right side of the light guide plate is deflected to one side after being repeatedly reflected and refracted by the light guide plate; the light emitted from the light source located on the left side of the light guide plate is reflected and refracted by the light guide plate to the light source on the right side.
  • the emitted light is deflected in different directions of deflection. In this way, the light is deflected in different directions by the backlight module, and the stereoscopic display can be realized without using other structures such as a grating, and the display brightness can be improved.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Planar Illumination Modules (AREA)

Abstract

一种背光模组（1）及显示装置，包括：层叠放置的第一导光板（21）和第二导光板（22）；与第一导光板（21）相对设置的第一光源（11）、与第二导光板（22）相对设置的第二光源（12），其中第一光源（11）和第二光源（12）位于两个导光板（21，22）的相对的两侧；其中，在第一导光板（21）和第二导光板（22）的上表面或在第一导光板（21）和第二导光板（22）的下表面设置有微槽结构（30），且每一个导光板（21，22）上的微槽结构（30）与其相对的光源（11，12）距离越远微槽结构（30）的高度越高。因此，无需光栅就可以使人对看到的图像产生立体感觉，从而提高显示亮度。

Description

背光模组及显示装置 技术领域
本发明的实施例涉及一种背光模组及显示装置。 背景技术
近年来， 立体显示即 3D ( three- dimens iona 三维）显示， 已经成为显 示领域的一大趋势。与普通二维显示相比， 3D技术可以使画面变得立体逼真， 图像不再局限于屏幕平面， 仿佛能够走出屏幕外面， 让观众有身临其境的感 觉。尽管 3D显示技术分类繁多， 不过其基本的原理是相似的， 就是利用人眼 左右分别接收不同图像， 由于人的两只眼睛间隔约 65mm, 这种位置差异导致 左眼和右眼会看到不同的二维图像， 然后大脑经过对不同二维图像的信息进 行叠加重生， 构成一个具有前一后、 上一下、 左一右、 远一近等立体方向效 果的影像。
如今主流的 3D立体显示技术是通过特制的眼镜实现，这使得其应用范围 以及使用舒适度大打折扣。为解决上述问题，棵眼 3D显示技术成为研究的新 热点。 常规的棵眼 3D显示装置是由显示面板和光栅组成， 其中， 光栅包括多 个光栅单元， 将光栅按一定的方式配置在显示面板前面， 经光栅分像， 可使 人的双眼看到不同的视觉图像，产生立体感觉。但由于在显示屏上外加光栅， 会使得显示亮度降低。 发明内容
本发明的实施例提供一种背光模组及显示装置， 包括所述背光模组的显 示装置， 无需光栅就可以使人对看到的图像产生立体感觉， 从而可以提高显 示亮度。
本发明的实施例采用如下技术方案：
本发明提供了一种背光模组， 包括： 层叠放置的第一导光板和第二导光 板； 以及与第一导光板相对设置的第一光源、 与第二导光板相对设置的第二 光源， 其中所述第一光源和第二光源位于所述两个导光板的相对的两侧； 其 中， 在所述第一导光板和所述第二导光板的上表面或在所述第一导光板和所 述第二导光板的下表面设置有微槽结构， 且每一个所述导光板上的微槽结构 与其相对的光源距离越远， 所述微槽结构的高度越高。
可选的， 所述 槽结构在所述导光板上形成多排， 且与其相对的光源距 离越远， 相邻两排的间距越小。
可选的， 每一排包括多个微槽结构， 位于同一排的微槽结构均匀分布。 可选的， 与其相对的光源距离越远， 每一排包括的微槽结构越多。
可选的， 所述 槽结构为三角形凹槽。
可选的， 所述微槽结构为直角三角形凹槽。
可选的， 所述导光板上的直角三角形凹槽倾斜边的倾斜角度相同。
可选的， 所述直角三角形凹槽倾斜边的倾斜角度在 40。 -60° 之间。 可选的， 所述光源的高度与所述导光板的高度相同。
本发明实施例提供了一种显示装置， 包括： 背光模组和显示屏， 其中， 所述背光模组为本发明实施例提供的任一背光模组。 附图说明
以下将结合附图对本发明的实施例进行更详细的说明， 以使本领域普通 技术人员更加清楚地理解本发明， 其中：
图 1为本发明实施例提供的一种背光模组的剖视结构示意图；
图 2为本发明实施例提供的第一光源发出的光线的光路示意图； 图 3为本发明实施例提供的第二光源发出的光线的光路示意图； 图 4为本发明实施例提供的背光模组的第二导光板侧视结构示意图； 图 5为本发明实施例提供的一种第二导光板结构示意图；
图 6为本发明实施例提供的另一种第二导光板结构示意图；
图 7为本发明实施例提供的另一种第二导光板结构示意图。 附图标记：
1-背光模组； 2-框架； 30-微槽结构； 30a-直角边； 30b-倾斜边； 31-第 一支撑件； 32-第二支撑件； 4-反射板； 5-棱镜片； 6-扩散片； 7-显示屏； 8- 透明胶； 11-第一光源； 12 -第二光源； 21_第一导光板； 22_第二导光板。 具体实施方式 为使本发明的实施例的目的、 技术方案和优点更加清楚， 下面将结合本 发明实施例的附图对本发明的实施例的技术方案进行清楚、 完整的描述。 显 然， 所描述的实施例仅是本发明的一部分示例性实施例， 而不是全部的实施 例。 基于所描述的本发明的示例性实施例， 本领域普通技术人员在无需创造 性劳动的前提下所获得的所有其它实施例都属于本发明的保护范围。
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一"、 "第二" 以及类似的词语并不表示任何顺序、 数 量或者重要性， 而只是用来区分不同的组成部分。 同样， "一个"、 "一"或者 "该"等类似词语也不表示数量限制， 而是表示存在至少一个。 "包括 "或者 "包含" 等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后 面列举的元件或者物件及其等同，而不排除其他元件或者物件。 "上"、 "下"、 "左"、 "右"等仅用于表示相对位置关系， 当被描述对象的绝对位置改变后， 则该相对位置关系也可能相应地改变。
本发明实施例提供了一种背光模组 1 , 包括： 层叠放置的第一导光板 21 和第二导光板 22 ; 与第一导光板 21相对设置的第一光源 11、 与第二导光板 22相对设置的第二光源 12 ,且所述第一光源 11和第二光源 12位于所述两个 导光板的相对的两侧； 其中， 在所述第一导光板 21和所述第二导光板 22的 上表面或在所述第一导光板 21和所述第二导光板 22的下表面设置有微槽结 构 30 , 且每一个所述导光板上的微槽结构 30与其相对的光源距离越远， 所 述微槽结构的高度越高。
需要说明的是， 第一导光板和第二导光板层叠放置， 可以是第一导光板 位于第二导光板的上面， 也可以是第二导光板位于第一导光板的上面， 本发 明实施例中对第一导光板和第二导光板的位置不限于此。 例如与第一导光板 相对设置有第一光源， 则所述第一导光板使得第一光源发出的光向一个方向 偏转， 即使得第一光源发出的光被人的左眼（或右眼）接收； 相应的， 与第 二导光板相对设置有第二光源， 则所述第二导光板用于使得第二光源发出的 光向另一个方向偏转， 即使得第二光源发出的光被人的右眼（或左眼）接收。 需要说明的是， 本发明实施例中， 以所述第一导光板使得第一光源的光向右 侧偏转,第二导光板使得第二光源发出的光向左侧偏转,其中，所述"左" "右" 是沿背光模组的光路方向， 以背光模组的法线为界限设定的。 则经第一导光 板向右偏转的光被人的左眼接收， 经第二导光板向左偏转的光被人的右眼接 收， 如图 1所示。
如图 2所示， 与第一导光板 21相对设置有第一光源 11 , 则所述第一导 光板 21使得第一光源 11发出的光向右侧方向偏转。 例如， 如图 2所示， 第 一光源 11发出的光线 e和光线 f 经导光板的多次反射和折射向右侧偏转，即 使得第一光源发出的光被人的左眼接收。 同理， 如图 3所示， 与第二导光板 22相对设置有第二光源 12 ,则所述第二导光板 22用于使得第二光源 12发出 的光向左侧方向偏转， 如图 3所示， 第二光源 12发出的光线 a、 光线 c和光 线 b经导光板的多次反射和折射后向左侧偏转，即使得第二光源 12发出的光 被人的右眼接收。 由于第一光源和第二光源发出的光经导光板发出后向不同 的两个方向偏转， 分别被人眼的左目艮和右目艮接收， 则左目艮和右目艮会看到不同 的二维图像，然后经过大脑对不同二维图像的信息进行叠加，形成三维效果。 本发明的实施例中， 所述第一导光板和第二导光板的结构可以是相同的， 但 为了保证对应于每一个导光板的光源的光的偏转， 在安装背光模组时根据光 源的位置， 所述两个导光板安装时的方向有所不同。
根据本发明的实施例， 在所述第一导光板和所述第二导光板的上表面或 在所述第一导光板和所述第二导光板的下表面设置有微槽结构。 例如， 可以 是在所述第一导光板和所述第二导光板的上表面设置微槽结构， 也可以是如 图 1所示， 在第一导光板 21和第二导光板 22的下表面设置微槽结构。 每一 个所述导光板上的微槽结构与其相对的光源距离越远， 所述微槽结构的高度 越高， 即微槽结构沿与其相对的光源的光路方向的高度增高。 如图 1所示， 第一导光板 21上的微槽结构距离第一光源 11越远， 微槽结构的高度越高； 对应的， 第二导光板 22上的微槽结构距离第二光源 12越远， 微槽结构的高 度越高。 由于光源发出的光距离光源越远光的损失越大， 即导光板上距离光 源较近的位置处的光的强度大， 距离光源较远的位置处的光的强度小， 在距 离光源较远的位置处每一排包括的微槽结构的高度越高， 可以使得光源发出 的光能够更多地到达导光板距离较远的位置处。 而且在距离光源较远的位置 处经过微槽结构使得光发生偏转， 进一步可以改善经导光板发出的光的均匀 性。 避免光源发出的光仅在距离导光板距离较近的位置处 射和折射， 光 在距离光源较远位置处的强度小， 背光模组发光不均匀。 微槽结构设置在所 述导光板的下表面， 则所述微槽结构的高度即为微槽结构距离导光板下表面 的最大距离； 微槽结构设置在所述导光板的上表面， 则所述微槽结构的高度 即为微槽结构距离导光板上表面的最大距离。
本发明实施例提供了一种背光模组， 所述背光模组包括层叠放置的第一 导光板和第二导光板； 与第一导光板相对设置的第一光源、 与第二导光板相 对设置的第二光源， 并且所述第一光源和第二光源位于所述两个导光板的相 对的两侧， 则所述第一导光板使得第一光源发出的光向一个方向偏转， 即使 得第一光源发出的光被人的左眼（或右眼）接收； 相应的， 与第二导光板相 对设置有第二光源， 则所述第二导光板用于使得第二光源发出的光向另一个 方向偏转， 即使得第二光源发出的光被人的右眼（或左眼）接收。 由于第一 的左眼和右眼接收， 则左眼和右眼会看到不同的二维图像， 然后经过大脑对 不同二维图像的信息进行叠加， 形成三维效果， 而无需设置光栅。 所述第一 导光板和第二导光板上的微槽结构与其相对的光源距离越远， 所述微槽结构 的高度越高，可以保证光源发出的光可以到达导光板距离光源较远的位置处， 进而经过微槽结构使得光发生偏转， 提高背光模组的发光均匀性。
可选的， 如图 4-图 7所示， 所述微槽结构在所述导光板上形成多排， 且 与其相对的光源距离越远， 相邻两排的间距越小。 需要说明的是， 本实施例 仅以第二导光板为例进行详细说明， 第一导光板与第二导光板上的微槽结构 的设置相同， 原理相同。 如图 4所示， 距离光源较近的相邻两排的微槽结构 的间距 p大于距离光源较远的相邻两排的微槽结构的间距 k。 如图 4所示， 所述微槽结构沿 101方向形成多排。 需要说明的是， 所述 101方向可以是与 导光板相对的光源的光路方向， 如图 4所示， 101方向即为第二光源 12的光 路方向。 由于导光板距离光源越近， 则光源发出的光的强度强， 距离光源越 远， 光的强度弱， 因此， 本发明的实施例设计成： 导光板与其相对的光源距 离越远， 相邻两排的微槽结构间距越小， 即使得导光板在距离光源较远的位 置处微槽结构分布越密， 可以提高光源发出的光的利用率， 进一步提升背光 模组的发光均匀性。
需要说明的是， 所述导光板上的微槽结构形成多排， 其可以是如图 5所 示， 每一排包括一个微槽结构， 且所述一个微槽结构贯穿整个导光板， 以使 每一排包括多个微槽结构， 且位于同一排的多个微槽结构均匀分布， 以保证 经微槽结构反射和折射后出射的光的均匀性。
进一步的， 如图 7所述， 与相对的光源距离越远， 每一排包括的微槽结 构越多。 由于光源发出的光距离光源越远光的损失越大， 即导光板上距离光 源较近的光的强度强，距离光源较远的光的强度弱， 因此， 本实施例设计成， 使在距离光源较近的位置处每一排包括的微槽较少， 可以使得光源发出的光 能够更多地到达导光板距离较远的位置处， 且在距离光源较远的位置处每一 排包括的微槽结构较多， 可以使得到^巨离光源较远的位置处的光经更多微 槽结构反射和折射发出， 提高背光模组的发光均匀性。
可选的， 所述 槽结构为三角形凹槽。 例如， 如图 4-图 7所示， 所述 槽结构为直角三角形 槽。 如图 4所示， 每一个直角三角形 槽包括一个直 角边 30a和一个倾斜边 30b。 垂直于导光板下表面的直角边的长度即为凹槽 的深度或高度。如图 4所示，第二导光板 22上的直角三角形凹槽距离第二光 源 12越远，直角边 30a的高度越高。且所述直角三角形的倾斜边与导光板相 对的光源相对。如图 1所示，导光板 21上的直角三角形凹槽的倾斜边与第一 光源 11相对； 导光板 22上的直角三角形凹槽的倾斜边与第二光源 12相对。
可选的， 所述导光板上的直角三角形凹槽倾斜边的倾斜角度相同。 如图 4所示， 导光板上各倾斜边 30b与直角边 30a的夹角即为倾斜角， 且导光板 上的各倾斜角 α相同。 这样导光板不仅制作方便， 容易成型且光出射在一定 的范围内， 可以进一步保证经导光板发出的光的均一性。
可选的， 所述直角三角形凹槽倾斜边的倾斜角度在 40。 -60。 之间。 需 要说明的是， 所述直角三角形的倾斜角度例如为 40° 、 50° 或 60° 。 这样 不仅可以避免发生全反射， 而且由于人的左眼和右眼接收光线的最大角度一 般为 70° , 最小角度一般为 10° , 如果所述倾斜角度设计成在 40。 -60。 之 间， 则相对于垂直于显示装置（即垂直于导光板） 的方向， 经导光板发出的 光线角度在 5° -35。 之间，那么经导光板发出的光线向两个方向偏转的角度 之和在 10。 -70。 之间， 因此可以保证人接收光线的角度在 10° -70。 之间， 保证人眼正常接收图像。
可选的， 所述光源高度与所述导光板的高度相同。 这样可以提高光源发 出的光的利用率。
可选的， 所述背光模组还包括， 框架和支撑件， 所述框架和支撑件用于 固定和支撑所述导光板和光源。 例如， 如图 1所示， 所述背光模组还包括框 架 2以及第一支撑件 31和第二支撑件 32 , 其中， 框架 2用于支撑整个背光 模组的各组成部分，支撑件用于支撑背光模组的其他组成部分。如图 1所示， 第一支撑件 31支撑棱镜片 5、扩散片 6以及显示屏 7。第二支撑件 32用于支 撑第一光源 11。需要说明的是，背光模组的组成部分也不局限于上述的描述， 如图 1所示， 背光模组还可以包括反射片 4。 背光模组的其他相关部件可如 常规技术的设计。
另外， 如图 1所示， 所述第一导光板 21和第二导光板 22还可以在组装 之前通过透明胶 8粘合在一起， 进一步方便背光模组的安装。
本发明实施例提供了一种显示装置， 包括： 背光模组和显示屏， 其中， 所述背光模组为本发明实施例提供的任一背光模组。 所述显示装置可以为液 晶显示器、 电子纸等显示器件以及包括这些显示器件的电视、 数码相机、 手 机、 平板电脑等任何具有显示功能的产品或者部件。
所述显示装置在工作时， 背光模组的两个光源依次切换打开。 参照图 3 , 当第二光源 12打开， 第二光源 12发出的光线经两个导光板出射， 从导光板 射出的光线大致朝向一个方向， 例如左侧。如图 3所示， 第二光源 12发出的 光线 a经下导光板 22上的直角三角形的倾斜边反射后向左侧偏转；第二光源 12发出的光线 c经下导光板 22上的直角三角形的倾斜边反射后， 再经上导 光板向左侧偏转； 第二光源 12发出的光线经下导光板 22上的直角三角形的 倾斜边折射之后，在经反射片反射的光线 b经下导光板 22上的直角三角形的 倾斜边反射后， 再经上导光板 21的直角三角形的倾斜边折射后向左侧偏转。 从图 3中可以得知，第二光源 12发出的光线经下导光板和上导光板的多次反 射和折射， 其出射光线均向左侧偏转。 同样的， 如图 2所示， 当第一光源 11 打开，第一光源 11发出的光线经两个导光板，其从导光板射出的光线大致朝 向另一方向， 例如右侧。如图 2所示， 第一光源 11发出的光线 e经上导光板 21上的直角三角形的倾斜边折射后，再经下导光板的多次折射最后从上导光 板射出， 其出射光线向右侧偏转； 第一光源 11发出的光线 f 经上导光板 21 上的直角三角形的倾斜边折射后直接向右侧偏转。 从图 2中可以得知， 第一 光源 11发出的光线经下导光板和上导光板的多次反射和折射，其出射光线均 向右侧偏转。 这样， 显示屏显示的图像分别通过不同方向到达人的左眼和右 目艮， 使人的双眼看到不同的视觉图像， 产生立体感觉。
需要说明的是， 本发明实施例中的附图中的光线的光路只是部分反射和 折射， 其主要用于分析各光源发出的光的偏转情况， 实际过程中， 每一光源 发出的光经上导光板和下导光板的多次反射和折射， 最终从上导光板发出。 但无论光线经过多少次的反射和折射， 位于导光板左侧的光源发出的光最后 从上导光板发出后均向右侧偏转， 由人的左眼接收； 位于导光板右侧的光源 发出的光最后从上导光板发出后均向左偏转， 由人的右目艮接收。 这样， 显示 屏显示的图像分别通过不同方向到 的左眼和右眼， 使人的双眼看到不同 的视觉图像， 产生立体感觉。
本发明实施例提供的一种背光模组及显示装置， 所述背光模组包括两个 层叠设置的导光板， 以及设置在所述导光板两侧分别与一个导光板相对的光 源， 其中， 位于导光板右侧的光源发出的光线经导光板的多次反射和折射之 后向一侧偏转； 位于导光板左侧的光源发出的光线经导光板的多次反射和折 射之后向与右侧的光源发出的光的偏转方向不同的方向偏转。 这样， 通过所 述背光模组使得光线向不同的方向偏转， 不用通过光栅等其他结构就可以实 现立体显示， 还可以提高显示亮度。
以上所述， 仅为本发明的具体实施方式， 但本发明的保护范围并不局限 于此， 本领域普通技术人员在本发明揭露的技术范围内， 可轻易想到许多其 他的变化或替换， 这些变化和替换都应涵盖在本发明的保护范围之内。

Claims

权利要求书
1、 一种背光模组， 包括：
层叠放置的第一导光板和第二导光板； 以及
与第一导光板相对设置的第一光源、与第二导光板相对设置的第二光源， 其中所述第一光源和第二光源位于所述两个导光板的相对的两侧；
其中， 在所述第一导光板和所述第二导光板的上表面或在所述第一导光 板和所述第二导光板的下表面设置有微槽结构， 且每一个所述导光板上的微 槽结构与其相对的光源距离越远所述微槽结构的高度越高。
2、根据权利要求 1所述的背光模组，其中所述微槽结构在所述导光板上 形成多排， 且与其相对的光源距离越远， 相邻两排的间距越小。
3、根据权利要求 2所述的背光模组， 其中每一排包括多个微槽结构，位 于同一排的微槽结构均匀分布。
4、根据权利要求 2或 3所述的背光模组， 其中， 所述微槽结构与其相对 的光源距离越远， 每一排包括的微槽结构越多。
5、根据权利要求 1-4任一项所述的背光模组， 其中所述微槽结构为三角 形凹槽。
6、根据权利要求 1-5任一项所述的背光模组， 其中所述微槽结构为直角 三角形凹槽。
7、根据权利要求 6所述的背光模组，其中所述第一和第二导光板上的直 角三角形凹槽倾斜边的倾斜角度相同。
8、根据权利要求 7所述的背光模组，其中所述直角三角形凹槽倾斜边的 倾斜角度在 40° -60。 之间。
9、根据权利要求 1-8任一项所述的背光模组， 其中所述光源的高度与所 述导光板的高度相同。
10、 一种显示装置， 包括： 背光模组和显示屏， 其中所述背光模组为权 利要求 1-9任一项所述的背光模组。
PCT/CN2013/089461 2013-06-04 2013-12-14 背光模组及显示装置 WO2014194636A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310218308.9 2013-06-04
CN2013102183089A CN103292219A (zh) 2013-06-04 2013-06-04 一种背光模组及显示装置

Publications (1)

Publication Number Publication Date
WO2014194636A1 true WO2014194636A1 (zh) 2014-12-11

Family

ID=49093542

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/089461 WO2014194636A1 (zh) 2013-06-04 2013-12-14 背光模组及显示装置

Country Status (2)

Country Link
CN (1) CN103292219A (zh)
WO (1) WO2014194636A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261672A1 (en) * 2016-03-09 2017-09-14 Young Lighting Technology Inc. Light source module and display apparatus

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292219A (zh) * 2013-06-04 2013-09-11 北京京东方光电科技有限公司 一种背光模组及显示装置
CN104251421B (zh) * 2014-07-31 2016-02-10 京东方科技集团股份有限公司 背光模组、显示装置及其显示方法
RU2617003C1 (ru) * 2015-11-05 2017-04-19 Самсунг Электроникс Ко., Лтд. Световодная пластина и содержащее ее устройство задней подсветки
CN105572969A (zh) * 2016-01-04 2016-05-11 京东方科技集团股份有限公司 一种自发光模组及显示装置
RU2020126652A (ru) * 2018-01-10 2022-02-10 Конинклейке Филипс Н.В. Световодный блок
CN110568657A (zh) * 2018-06-05 2019-12-13 中强光电股份有限公司 显示装置
CN112630880B (zh) * 2020-11-27 2021-10-08 苏州雅睿生物技术股份有限公司 一种导光板、荧光检测光学***、大批量核酸检测方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1584661A (zh) * 2004-06-14 2005-02-23 友达光电股份有限公司 立体影像成像***
CN1632667A (zh) * 2005-01-28 2005-06-29 友达光电股份有限公司 背光组件及利用此背光组件的立体图像成像装置和方法
CN1973239A (zh) * 2004-06-24 2007-05-30 奥林巴斯株式会社 影像显示装置及车载用影像显示装置
CN101290428A (zh) * 2007-04-18 2008-10-22 奇美电子股份有限公司 使显示器具有立体成像功能的背光模组及其导光板
US20090316433A1 (en) * 2008-06-19 2009-12-24 Sung-Kyu Shim Light guide plate and backlight unit having the same
CN103105697A (zh) * 2011-11-10 2013-05-15 索尼公司 光源装置、显示装置和电子设备
CN103292219A (zh) * 2013-06-04 2013-09-11 北京京东方光电科技有限公司 一种背光模组及显示装置
CN203286399U (zh) * 2013-06-04 2013-11-13 北京京东方光电科技有限公司 一种背光模组及显示装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5897184A (en) * 1996-07-02 1999-04-27 Dimension Technologies, Inc. Reduced-thickness backlighter for autostereoscopic display and display using the backlighter
CN100392491C (zh) * 2001-07-27 2008-06-04 株式会社恩普乐 面光源装置及导光板
JP2003149640A (ja) * 2001-11-09 2003-05-21 Kawaguchiko Seimitsu Co Ltd 液晶表示装置
JP4162900B2 (ja) * 2002-02-05 2008-10-08 アルプス電気株式会社 照明装置及び液晶表示装置
CN1678866A (zh) * 2002-08-30 2005-10-05 日立化成工业株式会社 导光板及背光装置
GB0322682D0 (en) * 2003-09-27 2003-10-29 Koninkl Philips Electronics Nv Backlight for 3D display device
CN100419522C (zh) * 2005-08-19 2008-09-17 鸿富锦精密工业（深圳）有限公司 导光板和背光***
CN101846266A (zh) * 2009-03-27 2010-09-29 北京京东方光电科技有限公司 背光模组
JP2012138222A (ja) * 2010-12-25 2012-07-19 Omron Corp 面光源装置及び立体表示装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1584661A (zh) * 2004-06-14 2005-02-23 友达光电股份有限公司 立体影像成像***
CN1973239A (zh) * 2004-06-24 2007-05-30 奥林巴斯株式会社 影像显示装置及车载用影像显示装置
CN1632667A (zh) * 2005-01-28 2005-06-29 友达光电股份有限公司 背光组件及利用此背光组件的立体图像成像装置和方法
CN101290428A (zh) * 2007-04-18 2008-10-22 奇美电子股份有限公司 使显示器具有立体成像功能的背光模组及其导光板
US20090316433A1 (en) * 2008-06-19 2009-12-24 Sung-Kyu Shim Light guide plate and backlight unit having the same
CN103105697A (zh) * 2011-11-10 2013-05-15 索尼公司 光源装置、显示装置和电子设备
CN103292219A (zh) * 2013-06-04 2013-09-11 北京京东方光电科技有限公司 一种背光模组及显示装置
CN203286399U (zh) * 2013-06-04 2013-11-13 北京京东方光电科技有限公司 一种背光模组及显示装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170261672A1 (en) * 2016-03-09 2017-09-14 Young Lighting Technology Inc. Light source module and display apparatus
US10705283B2 (en) * 2016-03-09 2020-07-07 Nano Precision Taiwan Limited Light source module and display apparatus

Also Published As

Publication number Publication date
CN103292219A (zh) 2013-09-11

Similar Documents

Publication Publication Date Title
WO2014194636A1 (zh) 背光模组及显示装置
TWI312883B (en) Backlight module for 3d display device and method for displaying 3d images utilizing the same
KR101775068B1 (ko) 방향성 평판 조명기
US7333158B2 (en) Three-dimensional display system and method thereof
JP6797672B2 (ja) バックライトユニット及びこれを含むディスプレイ装置
US9217815B2 (en) Double-vision backlight module and liquid crystal display device
TWI484389B (zh) 觸控顯示裝置
WO2018076878A1 (zh) 一种显示装置及其显示方法以及近眼式显示装置及其显示方法
WO2017054382A1 (zh) 光学元件、导光板、棱镜、背光模组及显示装置
KR20140144617A (ko) 공간 영상 투영 장치
WO2014153878A1 (zh) 显示面板及3d显示装置
WO2016037433A1 (zh) 立体显示装置
WO2016015435A1 (zh) 三维显示装置
KR102015363B1 (ko) 백라이트 유닛 및 그것을 포함하는 표시 장치
CN105676338A (zh) 显示装置
US10795177B2 (en) Prism sheet for auto-stereoscopic 3D display and display device including same
KR20150064618A (ko) 멀티 스크린 디스플레이 장치
TW201812346A (zh) 稜鏡片、背光模組，及顯示裝置
JP6803201B2 (ja) 導光板及びこれを含むバックライト装置
TW201035640A (en) Light diffraction member and display and backlight module having the same
WO2016037434A1 (zh) 立体显示装置
JP2016053705A (ja) 表示装置
KR101082043B1 (ko) 통합형 광학 시트 및 이를 포함하는 광학장치
TWI526742B (zh) 曲型背光模組
TWI479197B (zh) And a conversion means for converting the 2D image into a 3D image

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13886168

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13886168

Country of ref document: EP

Kind code of ref document: A1