[go: up one dir, main page]

WO2015096363A1 - 灯罩、背光模组和显示装置 - Google Patents

灯罩、背光模组和显示装置 Download PDF

Info

Publication number
WO2015096363A1
WO2015096363A1 PCT/CN2014/077989 CN2014077989W WO2015096363A1 WO 2015096363 A1 WO2015096363 A1 WO 2015096363A1 CN 2014077989 W CN2014077989 W CN 2014077989W WO 2015096363 A1 WO2015096363 A1 WO 2015096363A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
backlight module
lampshade
side wall
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.)
Ceased
Application number
PCT/CN2014/077989
Other languages
English (en)
French (fr)
Inventor
池海
马青
孙文佳
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.)
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
Original Assignee
BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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 BOE Technology Group Co Ltd, Beijing BOE Display Technology Co Ltd filed Critical BOE Technology Group Co Ltd
Priority to US14/408,506 priority Critical patent/US20160266440A1/en
Publication of WO2015096363A1 publication Critical patent/WO2015096363A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G02B30/33—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving directional light or back-light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Definitions

  • the backlight module is one of the important components of the liquid crystal display. Since the liquid crystal itself does not emit light, the backlight module is required to supply sufficient brightness and uniform distribution of light to the liquid crystal display, so that the liquid crystal display can display images normally. At present, the display technology of liquid crystal displays has matured, especially in the design of backlight modules. In addition to the liquid crystal display devices such as liquid crystal displays and LCD TVs, the backlight module can also provide light sources for display devices such as digital photo frames, electronic papers, and mobile phones.
  • the backlight module is divided into an edge light type backlight module and a direct type backlight module according to the position of the light source.
  • CCFL Cold Cathode Fluorescent Lamp
  • CCFL has a price advantage, but it is forced to withdraw from the historical stage because it contains toxic mercury vapor.
  • An object of the present invention is to provide a lampshade, a backlight module and a display device which avoid causing crosstalk.
  • the lampshade of the present invention includes a receiving portion for accommodating the light source and a light exiting portion for emitting light connected to the receiving portion, the inside of the receiving portion is provided with a chamber for accommodating the light source, and the light emitting portion is The opposite outer surface of the receiving portion is provided with an outwardly projecting rib.
  • the rib has a triangular, trapezoidal or curved cross section.
  • the plurality of ribs are arranged in parallel, and the plurality of the ribs are arranged in parallel on the outer surface of the light exiting portion.
  • the rib has a triangular cross section, and the rib includes first and second walls that are opposite to each other and connected. The first wall and the second wall are bilaterally symmetric with respect to a longitudinal axis of the top of the rib.
  • the first wall and the second wall form an angle ranging from 90 to 80 degrees.
  • the first wall and the second wall form an angle of 120 degrees.
  • the chamber includes a first side wall, a second side wall, a third side wall, and a fourth side wall that are sequentially connected.
  • the inner surface of the first side wall, the inner surface of the second side wall, the inner surface of the third side wall, and the inner surface of the fourth side wall are respectively provided with light for reflecting the light source. Reflective layer.
  • the backlight module of the present invention comprises an optical film layer and a light source device disposed on one side of the light incident surface of the optical film layer, the light source device comprising one or more lamp covers of the present invention and a cavity disposed in the lamp cover a light source emitted from the light source emitted from the light source to the optical film layer through a light exit portion of the lamp cover.
  • a plurality of the lamp covers are arranged in a line on a side of the light incident surface of the optical film layer.
  • a plurality of the shades are arranged in the same direction as the plurality of the ribs on the cover.
  • the light source is an LED lamp.
  • the light source device further includes a printed circuit board that connects the plurality of the LED lamps, the printed circuit board being disposed at a bottom of the plurality of the lamp covers.
  • the display device of the present invention includes the backlight module of the present invention.
  • the lampshade of the present invention converges the light emitted by the light source such that the area of overlap between the light emitted by the source and the light emitted by the adjacent source is greatly reduced, thereby avoiding crosstalk.
  • the backlight module of the present invention employs the lamp cover of the present invention, the light-emitting effect is better and the cost is greatly reduced.
  • Figure 1 is a front elevational view showing the structure of the lampshade of the present invention.
  • Figure 2 is a perspective view showing the structure of the lampshade of the present invention.
  • FIG. 3 is a schematic structural view of a backlight module of the present invention.
  • FIG. 4 is a schematic structural view of a backlight module in the prior art.
  • an embodiment of the lampshade of the present invention includes a housing portion 1 for accommodating a light source and a light-emitting portion 2 for connecting the light-emitting line to the housing portion 1.
  • the interior of the housing portion 1 is provided for
  • the chamber 3 accommodating the light source 7 and the outer surface of the light exit portion 2 opposite the receiving portion 1 are provided with outwardly projecting ribs 5 to converge the light emitted by the light source 7 in the chamber 3.
  • the rib 5 may have a trapezoidal or fox shape in cross section.
  • the rib 5 ffi having a triangular cross section in the lampshade of the present invention having a shape similar to the triangular prism can refract and concentrate the light (especially the light incident from the bottom surface), that is, The light emitted by the light source 7 in the chamber 3 is converged.
  • the rib 5 has a trapezoidal or curved cross section, it can converge light from the light source 7 in the chamber 3.
  • the ribs 5 are plural, and the plurality of ribs 5 are arranged in parallel on the outer surface of the light exit portion 2.
  • the light source 7 is located in the chamber 3, and the light from the light source 7 is transmitted to the bottom of the rib 5, and under the refraction of the two side walls of the rib 5, the light converges and scatters outward.
  • the rib 5 includes a first wall 51 and a second wall 52 that are connected to each other, the first wall 51 and the second wall 52 being symmetrical about the longitudinal axis of the top of the rib 5 bilateral symmetry.
  • the angle formed by the first wall 51 and the second wall 52 is in the range of 90-180 degrees.
  • the angle formed by the first wall 51 and the second wall 52 is 120 degrees.
  • the chamber 3 includes a first side wall 31, which is sequentially connected Two side walls 32, a third side wall 33, and a fourth side wall 34.
  • the chamber 3 further includes a top wall 35 disposed above the first side wall 31, the second side wall 32, the third side wall 33, and the fourth side wall 34.
  • the light exit portion 2 is disposed above the top wall 35.
  • the inner surface of the first side wall 31, the inner surface of the second side wall 32, the inner surface of the third side wall 33, and the inner surface of the fourth side wall 34 are respectively provided with a reflective layer 6 for reflecting the light emitted from the light source 7.
  • the reflective layer 6 causes the light source to illuminate the side of the chamber 3 and is reflected by the light exit portion 2 at the top of the chamber 3 without being emitted from the side wall of the chamber 3, thereby further reducing the light source.
  • the backlight module of the present invention comprises an optical film layer 10, a light source device disposed on the light incident surface side of the optical film layer 10, and a back sheet 13.
  • the light source device is disposed between the optical film layer 10 and the back plate 13.
  • the light source means comprises one or more of the lampshade of the invention and a light source 7 disposed in the chamber 3 of the lampshade, the top of the lampshade being directed towards the light incident surface of the optical film layer 10. The light emitted from the light source 7 is emitted to the optical film layer 10 through the light exit portion 2 of the lamp cover.
  • the plurality of lamp covers are arranged in a line on the light incident side of the optical film layer 10.
  • the plurality of lampshades are arranged in the same direction as the arrangement of the plurality of ribs 5 on the lamp cover.
  • the light source 7 is an LED lamp.
  • the light source device further includes a printed circuit board 8 that connects the plurality of LED lamps, and the printed circuit board 8 is disposed at the bottom of the plurality of lamp covers.
  • the light emitted from the light source 7 is transmitted through the bottom of the rib 5, and under the refraction of the two walls of the rib 5, the light converges and is scattered outward through the optical film layer 10.
  • the backlight module of the prior art does not use the lamp cover of the present invention, and the printed circuit board 8 is disposed on the back plate 13.
  • the light source 7 on the printed circuit board 8 directly faces the optical film layer 10.
  • the light of the light source 7 is not converged, and the illumination angle is generally up to 120 degrees, so that there is overlap between the light emitted by the light source and the light emitted by the adjacent light source. , overlapping light is easy to cause crosstalk.
  • the lamp cover of the present invention converges the light of the light source 7, and the light divergence angle transmitted through the lamp cover is greatly reduced, so that the light emitted by the light source and the light emitted by the adjacent light source are The overlap area is greatly reduced, and when such a backlight is applied to a 3D display device, crosstalk can be avoided.
  • the display device of the present invention includes the backlight module of the present invention.
  • the display device may be: a liquid crystal panel, an electronic paper, a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet computer, and the like, or any product or component having a display function.
  • the above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and retouchings without departing from the principles of the present invention. It should also be considered as the scope of protection of the present invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种灯罩、背光模组和显示装置，所述灯罩包括容纳部（1）以及出光部（2），容纳部（1）的内部设置有用于容纳光源（7）的腔室（3），出光部（2）的与容纳部（1）相对的外表面设置有向外凸出的凸棱（5），以收敛腔室（3）内的光源（7）发出的光线。所述背光模组包括光学膜层（10）以及光源装置，所述光源装置包括多个所述灯罩。所述显示装置包括所述背光模组。

Description

灯罩、 背光模组和显示装置
Figure imgf000002_0001
背光模组为液晶显示器的重要组件之一， 由于液晶本身不发光， 需要背 光模组为液晶显示器供应充足的亮度与分布均匀的光线， 使液晶显示器能正 常显示影像。 目前， 液晶显示器的显示技术已经趋于成熟， 尤其在背光模组 的设计方面也有了很大的发展。 背光模组除了应 ffi在液晶显示器、 液晶电视 机等液晶显示装置之外， 还可以为数码相框、 电子纸、 手机等显示装置提供 光源。
背光模组依据光源的位置不同分为侧光式背光模组和直下式背光模组。 其中， 很多直下式背光模组采用 CCFL (冷阴极荧光灯管） 作为光源， 但是 CCFL虽有价格优势，但是因其含有有毒的汞蒸汽而被迫即将退出历史舞台。
目前市场上出现了以 LED灯条替代 CCFL的研发方案， 现有 LED背光 源中， LED在灯条基板上呈直线排列。 当这种背光源应用于 3D显示装置中 时， 由于 LED都有一定的发光角度， 这样相邻两个 LED之间会由于上述角 度的存在而使光线相互重叠， 重叠的光线引起串扰 （Crosstalk) 现象， 影响 显示装置的显示画质， 特别容易在高速运动画面中产生残影与拖尾现象。
本发明的目的是提供一种避免引起串扰现象的灯罩、 背光模组和显示装 置。
本发明的灯罩， 包括用于容纳光源的容纳部以及与所述容纳部连接的用 于出射光线的出光部， 所述容纳部的内部设置有 于容纳光源的腔室， 所述 出光部的与所述容纳部相对的外表面设置有向外凸出的凸棱。
本发明的灯罩， 其中， 所述凸棱的横截面为三角形、 梯形或者弧形。 所述凸棱为多个，多个所述凸棱平行排列于所述出光部的所述外表面上。 本发明的灯罩， 其中， 所述凸棱的横截面为三角形， 所述凸棱包括彼此 相对且连接的第一壁和第二壁。 所述第一壁与所述第二壁以所述凸棱的顶部 的纵向轴线为对称轴左右对称。
本发明的灯罩， 其中， 所述第一壁与第二壁形成的夹角范围为 90—】 80 度。
本发明的灯罩， 其中， 所述第一壁与第二壁形成的夹角为 120度。
本发明的灯罩， 其中， 所述腔室包括依次连接的第一侧壁、 第二侧壁、 第三侧壁以及第四侧壁。 所述第一侧壁的内表面、 所述第二侧壁的内表面、 所述第三侧壁的内表面、 所述第四侧壁的内表面分别设置有用于反射所述光 源发出光线的反射层。
本发明的背光模组， 包括光学膜层以及设置于所述光学膜层的入光面一 侧的光源装置， 所述光源装置包括一个或多个本发明的灯罩以及设置于所述 灯罩的腔室内的光源， 所述光源发射的光线经所述灯罩的出光部出射至所述 光学膜层。
本发明的背光模组， 其中， 多个所述灯罩沿直线排列于所述光学膜层的 入光面一侧。 多个所述灯罩的排列方向与所述灯罩上多个所述凸棱的排列方 向相同。
本发明的背光模组， 其中， 所述光源为 LED灯。 所述光源装置还包括连 接多个所述 LED灯的印刷电路板，所述印刷电路板设置于多个所述灯罩的底 部。
本发明的显示装置， 包括本发明的背光模组。
本发明的灯罩将光源发出的光线收敛， 这样光源发出的光与相邻的光源 发出的光之间的重叠区域大大减小， 由此避免引起串扰现象。
本发明的背光模组因为采用本发明的灯罩， 出光效果更好， 成本大大降 低。
本发明的显示装置因为采用了本发明的背光模组， 其产品品质得到很大 提升。 图 1为本发明的灯罩的结构示意图的主视图；
图 2为本发明的灯罩的结构示意图的立体图；
图 3为本发明的背光模组的结构示意图；
图 4为现有技术中的背光模组的结构示意图。
如图 1、 图 2所示， 本发明的灯罩的实施例， 包括用于容纳光源的容纳 部 1 以及与容纳部 1连接的用于散发光线的出光部 2， 容纳部 1的内部设置 有用于容纳光源 7的腔室 3， 出光部 2的与容纳部 1相对的外表面设置有向 外凸出的凸棱 5， 以收敛腔室 3内的光源 7发出的光线。
本发明的灯罩的实施例， 其中， 凸棱 5的横截面为三角形。
在本发明的灯罩的其他实施例中，凸棱 5的横截面可以为梯形或者狐形。 根据三棱镜的对光线的折射作用可知， 形状类似于三棱镜的本发明的灯罩中 的横截面为三角形的凸棱 5 ffi可以对光线 （特别是底面射入的光线） 起到折 射、 汇聚作用， 即收敛腔室 3内的光源 7发出的光线。 同理， 当凸棱 5的横 截面为梯形或者弧形也可以收敛腔室 3内的光源 7发出的光线。
本发明的灯罩的实施例， 其中， 凸棱 5为多个， 多个凸棱 5平行排列于 出光部 2的外表面上。
本发明的灯罩在工作时， 光源 7位于腔室 3内， 光源 7发出的光线透射 至凸棱 5的底部， 在凸棱 5的两侧壁的折射作用下， 光线汇聚并向外散射出 去。
本发明的灯罩的实施例， 其中， 凸棱 5包括彼此相对— 连接的第一壁 51 和第二壁 52， 第一壁 51与第二壁 52以凸棱 5的顶部的纵向轴线为对称轴左 右对称。
本发明的灯罩的实施例， 其中， 第一壁 51与第二壁 52形成的夹角 α的 角度范围为 90—180度。
本发明的灯罩的实施例， 其中， 第一壁 51与第二壁 52形成的夹角 α的 角度为 120度。
本发明的灯罩的实施例， 其中， 腔室 3包括依次连接的第一侧壁 31、 第 二侧壁 32、第三侧壁 33以及第四侧壁 34。腔室 3还包括设置于第一侧壁 31、 第二侧壁 32、 第三侧壁 33、 第四侧壁 34之上的顶壁 35。 出光部 2设置于顶 壁 35之上。 第一侧壁 31的内表面、 第二侧壁 32的内表面、 第三侧壁 33的 内表面、第四侧壁 34的内表面分别设置有用于反射光源 7发出光线的反射层 6。 反射层 6使光源 Ί向侧面发出光线在腔室 3的内部反射后， 仅由腔室 3的 顶部的出光部 2射出， 而不会由腔室 3的侧壁射出， 从而进一步减小了光源 7的发散角度。
结合图 3所示， 本发明的背光模组， 包括光学膜层 10、 设置于光学膜层 10的入光面一侧的光源装置以及背板 13。 光源装置设置于光学膜层 10与背 板 13之间。 光源装置包括一个或多个本发明的灯罩以及设置于灯罩的腔室 3 内的光源 7， 灯罩的顶部指向光学膜层 10的入光面。 光源 7发射的光线经灯 罩的出光部 2出射至光学膜层 10。
本发明的背光模组， 其中， 多个灯罩沿直线排列于光学膜层 10的入光面 一侧。 多个灯罩的排列方向与灯罩上多个凸棱 5的排列方向相同。
本发明的背光模组， 其中， 光源 7为 LED灯。 光源装置还包括连接多个 LED灯的印刷电路板 8， 印刷电路板 8设置于多个灯罩的底部。
本发明的背光模组在使用时， 光源 7发出的光线透射凸棱 5的底部， 在 凸棱 5的两壁的折射作用下， 光线汇聚并透过光学膜层 10向外散射。
如图 4所示， 现有技术中的背光模组没有使用本发明的灯罩， 背板 13上 设置印刷电路板 8。 印刷电路板 8上的光源 7直接面对光学膜层 10, 光源 7 的光线没有被收敛， 其发光角度一般可达 120度， 这样光源发出的光与相邻 的光源发出的光之间存在重叠， 重叠的光线很容易引起串扰现象。
本发明的背光模组中， 本发明的灯罩使光源 7的光线得到收敛， 经由灯 罩透射出来的光发散角度被大幅度减小， 这样光源发出的光与相邻的光源发 出的光之间的重叠区域大大减小， 当这种背光源应用于 3D 显示装置中时， 串扰现象即可得到避免。
本发明的显示装置， 包括本发明的背光模组。 所述显示装置可以为： 液 晶面板、 电子纸、 液晶电视、 液晶显示器、 数码相框、 手机、 平板电脑等任 何具有显示功能的产品或部件。 以上所述仅是本发明的优选实施方式， 应当指出， 对于本技术领域的普 通技术人员来说， 在不脱离本发明原理的前提下， 还可以做出若千改进和润 饰， 这些改进和润饰也应视为本发明的保护范围。

Claims

1 . 一种灯罩， 包括用于容纳光源的容纳部以及与所述容纳部连接的用于 出射光线的出光部， 所述容纳部的内部设置有用于容纳光源的腔室， 所述出 光部的与所述容纳部相对的外表面设置有向外凸出的凸棱。
2. 根据权利要求 1所述的灯罩， 其中， 所述凸棱的横截面为三角形、 梯 形或者弧形。
3. 根据权利要求 1或 2所述的灯罩， 其中， 所述凸棱为多个， 多个所述 凸棱平行排列于所述出光部的所述外表面上。
4. 根据权利要求 1 3中任一项所述的灯罩， 其中， 所述凸棱的横截面为 三角形， 所述凸棱包括彼此相对且连接的第一壁和第二壁。
5. 根据权利要求 4所述的灯罩， 其中， 所述第一壁与所述第二壁以所 述凸棱的顶部的纵向轴线为对称轴左右对称。
6. 根据权利要求 4或 5所述的灯罩， 其中， 所述第一壁与第二壁形成的 夹角范围为 90—180度。
7. 根据权利要求 6所述的灯罩， 其中， 所述第一壁与第二壁形成的夹角 为 120度。
8. 根据权利要求 1 7中任一项所述的灯罩， 其中， 所述腔室包括依次连 接的第一侧壁、 第二侧壁、 第三侧壁以及第四侧壁。
9. 根据权利要求 8所述的灯罩， 其中， 所述第一侧壁的内表面、 所述第 二侧壁的内表面、 所述第三侧壁的内表面、 所述第四侧壁的内表面分别设置 有用于反射所述光源发出光线的反射层。
10. 一种背光模组， 包括光学膜层以及设置于所述光学膜层的入光面一 侧的光源装置， 其中， 所述光源装置包括一个或多个如权利要求 1-9任一项 所述的灯罩以及设置于所述灯罩的腔室内的光源， 所述光源发射的光线经所 述灯罩的出光部出射至所述光学膜层。
11. 根据权利要求 10所述的背光模组， 其中， 多个所述灯罩沿直线排列 于所述光学膜层的入光面一侧。
12. 根据权利要求 11所述的背光模组， 其中， 多个所述灯罩的排列方 向与所述灯罩上多个所述凸棱的排列方向相同。
13. 根据权利要求 10 12 中任一项所述的背光模组， 其中， 所述光源为 LED灯。
14. 根据权利要求 〗0 13 中任一项所述的背光模组， 其中所述光源装置 还包括连接多个所述 LED灯的印刷电路板，所述印刷电路板设置于多个所述 灯罩的底部。
15. —种显示装置， 包括如权利要求 10-14任一项所述的背光模组。
PCT/CN2014/077989 2013-12-24 2014-05-21 灯罩、背光模组和显示装置 Ceased WO2015096363A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/408,506 US20160266440A1 (en) 2013-12-24 2014-05-21 Lampshade, backlight module and display apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310722370.1A CN103712155B (zh) 2013-12-24 2013-12-24 灯罩、背光模组和显示装置
CN201310722370.1 2013-12-24

Publications (1)

Publication Number Publication Date
WO2015096363A1 true WO2015096363A1 (zh) 2015-07-02

Family

ID=50405345

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/077989 Ceased WO2015096363A1 (zh) 2013-12-24 2014-05-21 灯罩、背光模组和显示装置

Country Status (3)

Country Link
US (1) US20160266440A1 (zh)
CN (1) CN103712155B (zh)
WO (1) WO2015096363A1 (zh)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103712155B (zh) * 2013-12-24 2017-11-03 京东方科技集团股份有限公司 灯罩、背光模组和显示装置
CN104197245B (zh) * 2014-09-09 2017-06-16 深圳市华星光电技术有限公司 背光模组
CN104570481A (zh) 2014-12-26 2015-04-29 上海天马微电子有限公司 一种led光源、背光模组及液晶显示装置
CN105807436A (zh) * 2016-04-18 2016-07-27 张家港康得新光电材料有限公司 3d显示装置
CN105807437A (zh) * 2016-04-18 2016-07-27 张家港康得新光电材料有限公司 3d显示装置
CN115798345B (zh) * 2022-12-21 2025-09-19 武汉华星光电技术有限公司 灯板、背光模组及显示装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060267037A1 (en) * 2005-05-31 2006-11-30 Samsung Electro-Mechanics Co., Ltd. Light emitting diode package
CN1909258A (zh) * 2005-06-15 2007-02-07 阿瓦戈科技Ecbuip(新加坡)股份有限公司 视场角减小的紧凑型led封装
CN201351836Y (zh) * 2009-01-24 2009-11-25 冠捷投资有限公司 直下式背光模块
CN102128416A (zh) * 2010-01-20 2011-07-20 3M创新有限公司 导光板组件及其制造方法与包含该组件的液晶显示器
CN102338345A (zh) * 2010-07-20 2012-02-01 颖台科技股份有限公司 柱状透镜组装置及其使用的背光模块
CN103712155A (zh) * 2013-12-24 2014-04-09 京东方科技集团股份有限公司 灯罩、背光模组和显示装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4583381B2 (ja) * 2004-10-19 2010-11-17 シャープ株式会社 液晶表示装置およびそれを備えた電子機器
US7384173B2 (en) * 2004-12-30 2008-06-10 3M Innovative Properties Company Brightness enhancement article
KR101308446B1 (ko) * 2006-12-15 2013-09-16 엘지디스플레이 주식회사 백 라이트 유닛과 이를 이용한 액정 표시장치
DE102007033300A1 (de) * 2007-07-18 2009-01-29 Bayer Materialscience Ag Lichtlenkende Oberflächenstruktur
EP2400569B1 (en) * 2010-06-28 2018-10-24 LG Innotek Co., Ltd. Light-emitting diode package
KR20130046042A (ko) * 2011-10-27 2013-05-07 삼성전자주식회사 백라이트유닛 및 이를 가지는 디스플레이장치
CN102878494B (zh) * 2012-09-28 2015-09-02 京东方科技集团股份有限公司 一种侧光式背光源及显示装置
CN203115725U (zh) * 2013-03-20 2013-08-07 京东方科技集团股份有限公司 扫描式背光模组及液晶显示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060267037A1 (en) * 2005-05-31 2006-11-30 Samsung Electro-Mechanics Co., Ltd. Light emitting diode package
CN1909258A (zh) * 2005-06-15 2007-02-07 阿瓦戈科技Ecbuip(新加坡)股份有限公司 视场角减小的紧凑型led封装
CN201351836Y (zh) * 2009-01-24 2009-11-25 冠捷投资有限公司 直下式背光模块
CN102128416A (zh) * 2010-01-20 2011-07-20 3M创新有限公司 导光板组件及其制造方法与包含该组件的液晶显示器
CN102338345A (zh) * 2010-07-20 2012-02-01 颖台科技股份有限公司 柱状透镜组装置及其使用的背光模块
CN103712155A (zh) * 2013-12-24 2014-04-09 京东方科技集团股份有限公司 灯罩、背光模组和显示装置

Also Published As

Publication number Publication date
CN103712155A (zh) 2014-04-09
CN103712155B (zh) 2017-11-03
US20160266440A1 (en) 2016-09-15

Similar Documents

Publication Publication Date Title
CN107461653B (zh) 发光单元、显示器和照明装置
CN103777382B (zh) 弯曲显示装置
KR102008076B1 (ko) 백라이트 모듈 및 액정 디스플레이
CN104508355B (zh) 照明装置、显示装置以及电视接收装置
WO2015096363A1 (zh) 灯罩、背光模组和显示装置
CN102980102B (zh) 一种背光模组及显示装置
CN114740652B (zh) 背光模组、显示面板及显示装置
TW200428061A (en) Liquid crystal display
CN102980104B (zh) 背光模组及使用该背光模组的显示装置
WO2014021303A1 (ja) 照明装置、表示装置、及びテレビ受信装置
WO2016197436A1 (zh) 一种背光模组及液晶显示装置
CN108397701A (zh) 一种背光模组及显示设备
CN103105695A (zh) 液晶面板组件和具有该液晶面板组件的图像显示装置
US20150301406A1 (en) Dimming Unit, Backlight Module Group and Display Device
WO2015046158A1 (ja) 表示装置
WO2014201785A1 (zh) 一种背光模组和显示装置
CN203519973U (zh) 一种显示装置
CN103946623B (zh) 照明装置、吸顶灯、背光源、液晶显示装置以及电视接收装置
US20210341665A1 (en) Backlight module and display device thereof
JP6329955B2 (ja) 照明装置及び表示装置
JP2014145824A (ja) 光源モジュール及びそれを備えた表示装置
CN210835520U (zh) 背光模组及显示装置
CN109709638B (zh) 导光板、背光模组、屏幕和电子设备
TW201636708A (zh) 背光模組
CN104676360A (zh) 背光模块及显示装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14408506

Country of ref document: US

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

Ref document number: 14875579

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 16/12/2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14875579

Country of ref document: EP

Kind code of ref document: A1