WO2015139423A1 - 一种背光模组及显示装置 - Google Patents

一种背光模组及显示装置 Download PDF

Info

Publication number
WO2015139423A1
WO2015139423A1 PCT/CN2014/085278 CN2014085278W WO2015139423A1 WO 2015139423 A1 WO2015139423 A1 WO 2015139423A1 CN 2014085278 W CN2014085278 W CN 2014085278W WO 2015139423 A1 WO2015139423 A1 WO 2015139423A1
Authority
WO
WIPO (PCT)
Prior art keywords
backlight module
light
scanning
display
light source
Prior art date
Application number
PCT/CN2014/085278
Other languages
English (en)
French (fr)
Inventor
贾丽丽
陈秀云
马青
尹大根
Original Assignee
京东方科技集团股份有限公司
北京京东方显示技术有限公司
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 京东方科技集团股份有限公司, 北京京东方显示技术有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/437,179 priority Critical patent/US10208918B2/en
Publication of WO2015139423A1 publication Critical patent/WO2015139423A1/zh

Links

Images

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/049—Patterns or structured surfaces for diffusing light, e.g. frosted surfaces
    • 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
    • G02B30/30—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 parallax barriers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source

Definitions

  • the present invention relates to the field of display, and in particular to a backlight module and a display device.
  • the stereoscopic display method of the time division method (for example, SG3D, Real D3D display technology)
  • the usual practice is to divide the backlight into a plurality of scanning areas, each scanning area is provided with a plurality of light sources, and the light sources in one scanning area have the same opening and closing time to ensure that the opening time of each scanning area light source matches the panel. Display, and turn off the light corresponding to the scan area after the display screen is completed.
  • a lens-type diffusion plate is used as a light-conducting surface, which can effectively control the directivity of light source transmission in the scanning area.
  • the first light sources 1 are distributed in an array and disposed on one side of the diffusion plate 2, and the backlight module forms the scanning areas A and B when performing 3D display.
  • each scanning area is correspondingly provided with a plurality of first light sources 1.
  • the present invention provides a backlight module including: a plurality of first light sources and a diffusion plate, wherein in the 3D display mode, the plurality of first light sources are divided into different scanning areas, each scanning The area corresponding to one display area, the backlight module further includes:
  • a blocking structure disposed between the adjacent scanning areas for blocking transmission of light emitted by the first light source in the other scanning areas except the current scanning area to the display area corresponding to the current scanning area.
  • the diffusion plate includes a plurality of light guiding regions respectively corresponding to the respective scanning regions, and the blocking structure is disposed between adjacent light guiding regions on the diffusion plate.
  • the barrier structure is a light blocking surface having a reflective coating.
  • one of the light blocking surfaces corresponding to the current scanning area and one of the light blocking surfaces corresponding to the adjacent scanning area form a groove.
  • the groove is a V-shaped structure.
  • the V-shaped groove has a vertex angle ⁇ of 10° to 50°.
  • the method further comprises:
  • a second light source disposed corresponding to the recess, the second light source for generating excitation light that excites the quantum material to emit light.
  • the density ⁇ of the quantum material satisfies:
  • D is the thickness of the diffuser plate
  • d is the distance from the bottom of the groove to the diffuser plate
  • ⁇ 0 is a constant.
  • a driving module is further included for the 2D/3D switching display mode, the driving module drives the second light source in all the scanning areas to emit light in the 2D display mode, and the light source in the current scanning area in the 3D display mode When in the off state, the second light source corresponding to the current scanning area is turned off.
  • the second light source comprises a blue LED light source.
  • the driving module is further configured to drive the first light source in each of the scanning regions to emit light.
  • the invention also provides a display device comprising the backlight module.
  • the invention has the beneficial effects that the backlight module of the present invention is provided with a blocking structure corresponding to each scanning area, and blocks the light emitted by the first light source in the other scanning area from being transmitted to the display area corresponding to the current scanning area, thereby reducing In the 3D display backlight scanning, the light-emitting scanning area turns off the light entering amount in the scanning area of the light, thereby reducing the crosstalk in the 3D display, and improving the quality of the stereoscopic display.
  • FIG. 1 is a schematic structural view of a conventional backlight module
  • FIG. 2 is a schematic top plan view showing a distribution of a light source of a conventional backlight module
  • FIG. 3 is a schematic structural view of a backlight module according to a first embodiment of the present invention.
  • Figure 4 is a cross-sectional view showing a diffusion plate according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a backlight module according to a second embodiment of the present invention.
  • FIG. 6 is a perspective view of a diffusion plate according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a driving module according to an embodiment of the present invention.
  • FIG. 3 a schematic diagram of a backlight module (left side) according to an embodiment of the present invention
  • the backlight module is used for a 2D/3D display device
  • the backlight module of the embodiment includes: a plurality of a light source 1 and a diffusing plate 2, the first light source array is arranged (as shown in FIG. 2).
  • the plurality of first light sources 1 are divided into different scanning areas, and each scanning area corresponds to a light guiding area on the diffusion plate corresponding to a display area
  • the backlight module further comprising: a blocking structure 3 disposed between adjacent scanning areas for blocking other scanning areas except the current scanning area
  • the light emitted by the first light source is transmitted to the display area corresponding to the current scanning area.
  • stereoscopic display is realized by scanning of the backlight.
  • the light sources in one scan zone have the same on and off times to ensure that the turn-on time of each scan zone source matches the display of the panel.
  • the backlight module of the present invention is provided with a blocking structure corresponding to each scanning area, which blocks the light emitted by the first light source in other scanning areas from being transmitted to the display area corresponding to the current scanning area, thereby reducing the scanning of the 3D display backlight.
  • the light scanning area turns off the amount of light entering the scanning area of the lamp, thereby reducing the crosstalk in the 3D display and improving the quality of the stereoscopic display.
  • the backlight module of the present embodiment includes scan areas A, B, and C. Of course, it is not limited to three scan areas in the figure, and may be three or more. Preferably it is eight or more.
  • the scanning area is extended in a certain direction, and may be disposed in a horizontal direction or a vertical direction, and each scanning area is correspondingly provided with at least one first light source 1.
  • the number of scanning zones is related to the driving frequency of the panel and the response speed of the liquid crystal.
  • the current time division method 3D display is 120 Hz driving, and the number of scanning zones is 8 or more. In the 3D display, the backlight scanning area is turned on and off in conjunction with the signal displayed on the panel.
  • the eight scanning areas of the backlight are sequentially turned on and off in one cycle of 8.33 ms to complete one cycle of scanning.
  • the state of the scanning area A in FIG. 3 is that the light source is turned off, the display light source in the scanning area B, C is turned on, and the display area of the display panel corresponding to the scanning area A has completed the current screen display, and enters the state ready for the next screen, scanning
  • the display areas corresponding to the areas B and C respectively enter the display of the current screen.
  • a blocking structure 3 is provided to block the light emitted by the light sources of the scanning areas B and C from being transmitted to the display area corresponding to the scanning area A, thereby effectively preventing the display area A from gradually entering the next screen.
  • the effect of the current screen display improves display quality.
  • the blocking structure of the present invention may be any light source emitted from a light source capable of blocking other adjacent or inter-phase scanning areas except the current scanning area, and entering the corresponding display area of the current scanning area, avoiding the light emitted by the other scanning areas from the current scanning area. Corresponding display area interferes, improving the quality of stereo display.
  • the blocking structure of the embodiment is preferably a light blocking surface having a reflective coating disposed between the light guiding area corresponding to the current scanning area and the adjacent light guiding area, thereby blocking other neighbors except the current scanning area. Or the light emitted by the light source of the adjacent scanning area enters the display area corresponding to the current scanning area.
  • FIG. 4 is a schematic structural view of a diffusing plate according to an embodiment of the present invention.
  • the blocking structure of the present embodiment is formed between adjacent light guiding regions, and the blocking structure of the scanning region B is included in the figure.
  • a light blocking surface 31 and a second light blocking surface 32 the first light blocking surface 31 blocks the light emitted by the light source in the scanning area A on the first side from entering the display area corresponding to the scanning area B, and the second light blocking surface 32 blocks The light emitted by the light source in the scanning area C on the second side enters the display area corresponding to the scanning area B. Since the light of the scanning areas on both sides of the scanning area B cannot enter the display area corresponding to the scanning area B, crosstalk during 3D display is avoided.
  • one of the light blocking surfaces of the diffusing plate corresponding to the current scanning area forms a groove with one of the light blocking surfaces corresponding to the adjacent scanning area, and the groove is formed between the light guiding areas corresponding to the adjacent scanning areas.
  • the groove can be V-shaped, U-shaped or other shape.
  • the groove formed by the light blocking surface in this embodiment is a V-shaped groove, and the apex angle ⁇ of the V-shaped groove is 10° to 50°, more preferably 10° to 30°.
  • the thickness D of the diffuser plate can be designed as needed, preferably 3-6 mm.
  • the opening of the groove is disposed on the first end surface of the diffusion plate, and the distance of the bottom of the groove from the other end surface of the diffusion plate is d, d is designed as needed, preferably, d satisfies more than 0.5 mm.
  • the present invention provides a backlight module of the second embodiment, as shown in FIG.
  • the backlight module of the embodiment is basically the same as the first embodiment, and the difference further includes:
  • a second light source 5 disposed corresponding to the recess filled with the quantum material is used to generate excitation light that excites the quantum material to emit light.
  • the quantum material is disposed in the groove and excited by the second light source, which can reduce the shadow of the corresponding groove when displayed.
  • the second light source of this embodiment is disposed at the end of the recess for exciting the quantum material in the recess.
  • FIG. 6 the figure shows a structure in which seven grooves are formed on the diffusion plate, thereby dividing the diffusion plate into eight scanning regions, and the end of each groove is correspondingly provided with a second light source 5, and second The light emitted by the light source excites the quantum material in the corresponding groove to emit light.
  • the quantum material provided in the groove in this embodiment may be CdS, ZnS or the like, and the fluorescence absorption wavelength of the quantum material is between 350 nm and 400 nm. Since the quantum material is provided in the groove, fluorescence can be generated, and the groove is prevented from forming a shadow on the display area in the 2D display.
  • the second light source of this embodiment may be an LED lamp, preferably a blue LED lamp, to excite the quantum material of the absorption wavelength for illumination.
  • the density of the quantum dot material filled in the groove in this embodiment can be set as needed.
  • the density ⁇ of the quantum material disposed in the V-shaped groove satisfies:
  • ⁇ 0 is a constant, which is the corresponding quantum dot density when the apex angle ⁇ of the groove is 30°
  • D is the thickness of the diffusion plate
  • d is the distance from the bottom of the groove to the diffusion plate.
  • the backlight module of the embodiment further includes a driving module 6 for driving the second light source in all the scanning areas in the 2D display mode. Illuminating, and for using the second light source corresponding to the current scanning area when the light source in the current scanning area is in the off state in the 3D display mode. In the 2D display mode, since the second light source of all the scanning areas is illuminated, the grooves are prevented from forming a shadow in the display area.
  • the second light source corresponding to the current scanning area is turned off, and the fluorescence emitted by the second light source in the current scanning area is prevented from entering the display area corresponding to the current scanning area, which is reduced.
  • Crosstalk when displaying 3D.
  • the backlight module of the embodiment turns on the blue LED and emits light through the quantum material to realize uniform display of the entire display area.
  • the blue LED is turned on as needed, and the light of the scanning area adjacent to the light is turned into the light-off area to reduce the crosstalk. Improve the display quality of the direct type backlight 3D.
  • the driving module 6 of the embodiment is further configured to drive the first light source to emit light, and the first light source of one or more of the scanning regions can be driven to emit light, thereby realizing scanning of the backlight to match the 3D display.
  • the backlight module of this embodiment may further provide a separate second driving module to drive the first light source to emit light, so as to drive the first light source in one or more scanning regions.
  • the present invention also provides a display device using any of the backlight modules as described in the above embodiments.
  • the display device may be any product or component having a display function such as a liquid crystal panel, an electronic paper, a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Planar Illumination Modules (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

一种背光模组及显示装置，所述背光模组包括：多个第一光源(1)和扩散板(2)，在3D显示模式下，所述多个第一光源(1)属于不同的扫描区，每个扫描区对应于一个显示区，所述背光模组还包括：对应各个扫描区设置的阻挡结构(3)，用于阻挡除当前扫描区之外的其他扫描区中的第一光源(1)发出的光线传输到所述当前扫描区所对应的显示区。所述背光模组在各个扫描区对应设置有阻挡结构(3)，阻挡了其他扫描区内的第一光源(1)发出的光线传输到当前扫描区所对应的显示区，减少在3D显示背光源进行扫描时的开灯扫描区对关灯扫描区的光线进入量，从而减小在3D显示时的串扰，提高了立体显示的质量。

Description

一种背光模组及显示装置 技术领域
本发明涉及显示领域，特别是涉及一种背光模组及显示装置。
背景技术
在时分法的立体显示方式(例如SG3D，Real D3D显示技术)中，需要配合背光源的扫描来实现优质的显示。通常做法是把背光分为多个扫描区，每个扫描区设有多个光源，在一个扫描区内的光源具有相同的开启和关闭时间，以保证每个扫描区光源的开启时间匹配面板的显示，以及在显示画面完成后对应扫描区域关灯。
对于侧入式的背光源结构中，采用透镜型扩散板作为光的传导面，可以有效控制扫描区域光源传输的指向性。在传统直下式背光源结构中，如图1和2所示，第一光源1成阵列分布，并设置在扩散板2的一侧，在进行3D显示时，背光模组形成扫描区A、B、C，每个扫描区对应设有若干个第一光源1。当扫描区A中的第一光源进行关闭，其他扫描区B、C的第一光源发光时，此时，扫描区B、C的光线会进入扫描区A对应的显示区，影响到扫描区对应的显示区的显示质量。
现有的直下式背光源在3D显示时，不能有效的实现串扰的控制，从而影响3D显示质量。
发明内容
为了解决现有的背光源在进行3D显示时，不能有效的实现串扰的控制，从而影响到3D显示质量。
为了解决上述技术问题，本发明提供了一种背光模组，包括：多个第一光源和扩散板，在3D显示模式下，所述多个第一光源划分在不同的扫描区，每个扫描区对应于一个显示区，所述背光模组还包括：
邻接的扫描区之间设置的阻挡结构，用于阻挡除当前扫描区之外的其他扫描区中的第一光源发出的光线传输到对应于所述当前扫描区的显示区。
优选地，所述扩散板包括分别与各个扫描区对应的多个导光区，所述阻挡结构设置于所述扩散板上的相邻的导光区之间。
优选地，所述阻挡结构是具有反射涂层的挡光面。
优选地，所述当前扫描区对应的其中一个挡光面与相邻扫描区对应的其中一个挡光面形成一凹槽。
优选地，所述凹槽为V型结构。
优选地，所述V型凹槽的顶角θ为10°～50°。
优选地，还包括：
填充于所述凹槽内部的量子材料；
对应于所述凹槽而设置的第二光源，该第二光源用于生成激发所述量子材料发光的激发光。
优选地，所述量子材料的密度ρ满足：
Figure PCTCN2014085278-appb-000001
其中，D为扩散板的厚度，d为凹槽底部距离扩散板的距离，ρ0为常数。
优选地，还包括一驱动模块，用于2D/3D切换显示模式，该驱动模块在2D显示模式下驱动所有扫描区中的第二光源发光，在3D显示模式下，在当前扫描区中的光源处于关闭状态时，关闭对应于当前扫描区的第二光源。
优选地，所述第二光源包括蓝光LED光源。
优选地，所述驱动模块还用于驱动各个扫描区中的第一光源发光。
本发明还提供了一种显示装置，包括所述的背光模组。
本发明的有益效果是：本发明的背光模组在与各个扫描区对应地设置有阻挡结构，阻挡了其他扫描区内的第一光源发出的光线传输到当前扫描区所对应的显示区，减少在3D显示背光源进行扫描时的开灯扫描区对关灯扫描区的光线进入量，从而减小在3D显示时的串扰，提高了立体显示的质量。
附图说明
图1为现有一种背光模组的结构示意图；
图2为现有一种背光模组的光源的分布俯视示意图；
图3为本发明第一种实施例的背光模组的结构示意图；
图4为本发明一种实施例的扩散板的截面图；
图5为本发明第二种实施例的背光模组的结构示意图；
图6为本发明一种实施例的扩散板的立体示意图；
图7为本发明一种实施例的驱动模块的原理图。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，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他实施例，都属于本发明保护的范围。
如图3所示，为本发明一种实施例的背光模组的结构示意图(左视图)，该背光模组用于2D/3D的显示装置，本实施例的背光模组包括：多个第一光源1和扩散板2，所述第一光源阵列排布(如图2所示)，在3D显示模式下，所述多个第一光源1划分在不同的扫描区，每个扫描区对应于扩散板上的一个导光区，并对应一个显示区，所述背光模组还包括：邻接的扫描区之间设置的阻挡结构3，用于阻挡除当前扫描区之外的其他扫描区内的第一光源发出的光线传输到对应于当前扫描区的显示区。在3D显示模式下，利用背光源的扫描来实现立体显示。在一个扫描区内的光源具有相同的开启和关闭时间，以保证每个扫描区光源的开启时间匹配面板的显示。
本发明的背光模组在各个扫描区对应设置有阻挡结构，阻挡了其他扫描区内的第一光源发出的光线传输到当前扫描区所对应的显示区，减少在3D显示背光源进行扫描时的开灯扫描区对关灯扫描区的光线进入量，从而减小在3D显示时的串扰，提高了立体显示的质量。
再次参阅图3，本实施例的背光模组包括扫描区A、B、C，当然不限于图中三个扫描区，还可以是三个或者三个以上。优选地为八个以上。扫描区沿某一方向延伸设置，可以是横向或者纵向设置，每个扫描区对应设有至少一个第一光源1。扫描区数量与面板的驱动频率和液晶的响应速度相关，目前的时分法3D显示为120Hz驱动，扫描区的数量为8个或者以上。在3D显示时，背光源扫描区配合面板显示的信号来打开和关闭。当面板为120Hz驱 动时，背光源的8个扫描区要在8.33ms的一个周期依次打开和关闭完成一个周期的扫描。图3中扫描区A的状态为光源关闭，扫描区B，C中的显示光源打开，扫描区A对应的显示面板的显示区已完成当前画面显示，进入为下一画面做准备的状态，扫描区B、C对应的显示区相应进入当前画面的显示。与扫描区A对应地设有阻挡结构3，以阻挡扫描区B和C的光源发出的光线传输到对应于扫描区A的显示区，从而有效阻止显示区A在逐步进入下一画面的阶段对当前画面显示的影响，提升了显示质量。
本发明的阻挡结构可以是任何能够阻挡除当前扫描区之外的其他相邻或者相间的扫描区的光源发出的光线进入当前扫描区对应的显示区，避免其他扫描区发出的光线对当前扫描区对应的显示区进行干扰，提高了立体显示质量。本实施例的阻挡结构优选地为设置于当前扫描区对应的导光区与相邻导光区之间的具有反射涂层的挡光面，从而阻挡了除当前扫描区之外的其他相邻或者相间的扫描区的光源发出的光线进入当前扫描区对应的显示区。
如图4所示，为本发明一种实施例的扩散板的结构示意图，本实施例的阻挡结构形成在相邻的导光区之间，图中示出了扫描区B的阻挡结构包括第一挡光面31和第二挡光面32，第一挡光面31阻挡住第一侧包括扫描区A中的光源发出的光线进入扫描区B对应的显示区，第二挡光面32阻挡住第二侧包括扫描区C中的光源发出的光线进入扫描区B对应的显示区。由于扫描区B中两侧的扫描区的光线不能进入扫描区B对应的显示区，从而避免了3D显示时的串扰。
再次参阅图4，当前扫描区对应的扩散板的其中一个挡光面与相邻扫描区对应的其中一个挡光面形成一凹槽，凹槽形成在相邻扫描区对应的导光区之间。该凹槽可以是V型、U型或者其他形状。本实施例中挡光面形成的凹槽为V型凹槽，所述V型凹槽的顶角θ为10°～50°，更优地为10°-30°。扩散板的厚度D可以根据需要来设计，优选地为3-6mm。凹槽的开口设置在扩散板的第一端面上，凹槽的底部距离扩散板另一端面的距离为d，d根据需要来设计，优选地，d满足大于0.5mm。
由于扩散板上形成有凹槽，在进行2D显示时，会出现阴影，影响到显示质量。为此，本发明提供了第二种实施例的背光模组，如图5所示，本实 施例的背光模组与第一实施例基本相同，区别是还包括：
量子材料4，填充于所述凹槽内部；
对应于填充有量子材料的凹槽而设置的第二光源5，用于生成激发所述量子材料发光的激发光。
本实施例在凹槽中设有量子材料，并由第二光源进行激发，可以减少对应的凹槽在显示时形成阴影。本实施例的第二光源设置在凹槽的端部，用于对凹槽中的量子材料进行激发。如图6所示，图中示出了扩散板上形成七个凹槽的结构，从而将扩散板分割成八个扫描区，每个凹槽的端部对应设有一第二光源5，第二光源发出的光线激发对应的凹槽中的量子材料发光。
本实施例在凹槽中设有的量子材料可以是CdS、ZnS等，量子材料的荧光吸收波长在350nm～400nm。由于凹槽中设有量子材料，可以产生荧光，避免了在2D显示时凹槽在显示区形成阴影。本实施例的第二光源可以是LED灯，优选地是蓝光LED灯，以激发该吸收波长的量子材料进行发光。
本实施例在凹槽中填充的量子点材料的密度可以根据需要来设定，优选地，设于V型凹槽中的量子材料的密度ρ满足：
Figure PCTCN2014085278-appb-000002
式中，ρ0为常数，为凹槽的顶角θ为30°时对应的量子点密度，D为扩散板的厚度，d为凹槽底部距离扩散板的距离。
如图7所示，为本发明一种实施例的驱动模块的原理图，本实施例的背光模组还包括一驱动模块6，用于在2D显示模式下驱动所有扫描区中的第二光源发光，以及用于在3D显示模式下，当当前扫描区中的光源处于关闭状态时，关闭所述当前扫描区对应的第二光源。在2D显示模式下，由于所有扫描区的第二光源都发光，避免了凹槽在显示区形成阴影。在3D显示模式下，当前扫描区的光源处于关闭状态时，关闭当前扫描区对应的第二光源，避免了当前扫描区中的第二光源发出的荧光进入当前扫描区对应的显示区，减少了3D显示时的串扰。
本实施例的背光模组在2D显示状态下，开启蓝光LED，通过量子材料发光，实现整个显示区的均匀显示。在3D显示状态下，根据需要开启蓝光LED，相邻开灯的扫描区域的光线进入到关灯区域会减少，减小串扰，从而 改善直下式背光源3D的显示质量。
本实施例的驱动模块6还用于驱动第一光源发光，可以驱动其中一个或者多个扫描区的第一光源发光，实现了背光源的扫描，以配合3D显示。本实施例的背光模组还可以提供单独的第二驱动模块来驱动第一光源发光，实现对其中一个或者多个扫描区中的第一光源进行驱动。
本发明还提供了一种显示装置，该显示装置使用了如上述实施例所述的任意一种背光模组。所述显示装置可以为：液晶面板、电子纸、手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
以上所述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，在不脱离本发明所述原理的前提下，还可以作出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。

Claims (12)

  1. 一种背光模组，包括：多个第一光源和扩散板，其特征在于，
    在3D显示模式下，所述多个第一光源划分在不同的扫描区，每个扫描区对应于一个显示区，所述背光模组还包括：
    邻接的扫描区之间设置的阻挡结构，用于阻挡除当前扫描区之外的其他扫描区中的第一光源发出的光线传输到对应于所述当前扫描区的显示区。
  2. 根据权利要求1所述的背光模组，其特征在于，
    所述扩散板包括分别与各个扫描区对应的多个导光区，
    所述阻挡结构设置于所述扩散板上的相邻的导光区之间。
  3. 根据权利要求1所述的背光模组，其特征在于，
    所述阻挡结构是具有反射涂层的挡光面。
  4. 根据权利要求3所述的背光模组，其特征在于，
    所述当前扫描区对应的其中一个挡光面与相邻扫描区对应的其中一个挡光面形成一凹槽。
  5. 根据权利要求4所述的背光模组，其特征在于，
    所述凹槽为V型结构。
  6. 根据权利要求5所述的背光模组，其特征在于，
    所述V型凹槽的顶角θ为10°～50°。
  7. 根据权利要求4所述的背光模组，其特征在于，还包括：
    填充于所述凹槽内部的量子材料；
    对应于所述凹槽而设置的第二光源，该第二光源用于生成激发所述量子材料发光的激发光。
  8. 根据权利要求7所述的背光模组，其特征在于，
    所述量子材料的密度ρ满足：
    Figure PCTCN2014085278-appb-100001
    其中，D为扩散板的厚度，d为凹槽底部距离扩散板的距离，ρ0为常数。
  9. 根据权利要求7所述的背光模组，其特征在于，
    还包括一驱动模块，用于2D/3D切换显示模式，该驱动模块在2D显示模式下驱动所有扫描区中的第二光源发光，在3D显示模式下，在当前扫描 区中的光源处于关闭状态时，关闭对应于当前扫描区的第二光源。
  10. 根据权利要求9所述的背光模组，其特征在于，
    所述第二光源包括蓝光LED光源。
  11. 根据权利要求9所述的背光模组，其特征在于，
    所述驱动模块还用于驱动各个扫描区中的第一光源发光。
  12. 一种显示装置，其特征在于，包括如权利要求1-11任何一项所述的背光模组。
PCT/CN2014/085278 2014-03-19 2014-08-27 一种背光模组及显示装置 WO2015139423A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/437,179 US10208918B2 (en) 2014-03-19 2014-08-27 Backlight module and display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410103224.5A CN103899989B (zh) 2014-03-19 2014-03-19 一种背光模组及显示装置
CN201410103224.5 2014-03-19

Publications (1)

Publication Number Publication Date
WO2015139423A1 true WO2015139423A1 (zh) 2015-09-24

Family

ID=50991484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/085278 WO2015139423A1 (zh) 2014-03-19 2014-08-27 一种背光模组及显示装置

Country Status (3)

Country Link
US (1) US10208918B2 (zh)
CN (1) CN103899989B (zh)
WO (1) WO2015139423A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103899989B (zh) * 2014-03-19 2016-12-07 京东方科技集团股份有限公司 一种背光模组及显示装置
CN104317069A (zh) * 2014-11-19 2015-01-28 京东方科技集团股份有限公司 背光模组及显示装置
US20220317359A1 (en) * 2020-10-23 2022-10-06 Beijing Boe Display Technology Co., Ltd. Light source module, method of manufacturing light source module, and display module

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100027113A1 (en) * 2008-08-01 2010-02-04 Samsung Electronics Co., Ltd. Display device
JP2012104266A (ja) * 2010-11-08 2012-05-31 Toppan Printing Co Ltd 導光板、バックライトユニット、及び表示装置
CN202835011U (zh) * 2012-08-03 2013-03-27 创维液晶器件(深圳)有限公司 一种用于3d显示的直下式背光模组及其显示装置
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
CN203413449U (zh) * 2013-06-04 2014-01-29 四川长虹电器股份有限公司 一种改善3d液晶电视显示效果的背光装置
CN103562777A (zh) * 2011-05-30 2014-02-05 皇家飞利浦有限公司 自动立体显示设备
CN103899989A (zh) * 2014-03-19 2014-07-02 京东方科技集团股份有限公司 一种背光模组及显示装置
CN203744036U (zh) * 2014-03-19 2014-07-30 京东方科技集团股份有限公司 一种背光模组及显示装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0322682D0 (en) * 2003-09-27 2003-10-29 Koninkl Philips Electronics Nv Backlight for 3D display device
WO2009066205A1 (en) * 2007-11-20 2009-05-28 Koninklijke Philips Electronics N.V. Backlighting system and display device
KR20100036462A (ko) * 2008-09-30 2010-04-08 삼성전자주식회사 2차원과 3차원 겸용 영상 표시 장치 및 방법
US8382337B2 (en) * 2009-09-18 2013-02-26 Luxingtek, Ltd. Lighting device, light spreading plate and method for manufacturing the same
KR101715849B1 (ko) * 2010-07-02 2017-03-14 엘지디스플레이 주식회사 스위처블 입체 전환 수단의 제조 방법
KR101246687B1 (ko) * 2010-10-20 2013-03-21 제일모직주식회사 무안경식 3차원 디스플레이

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100027113A1 (en) * 2008-08-01 2010-02-04 Samsung Electronics Co., Ltd. Display device
JP2012104266A (ja) * 2010-11-08 2012-05-31 Toppan Printing Co Ltd 導光板、バックライトユニット、及び表示装置
CN103562777A (zh) * 2011-05-30 2014-02-05 皇家飞利浦有限公司 自动立体显示设备
CN202835011U (zh) * 2012-08-03 2013-03-27 创维液晶器件(深圳)有限公司 一种用于3d显示的直下式背光模组及其显示装置
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
CN203413449U (zh) * 2013-06-04 2014-01-29 四川长虹电器股份有限公司 一种改善3d液晶电视显示效果的背光装置
CN103899989A (zh) * 2014-03-19 2014-07-02 京东方科技集团股份有限公司 一种背光模组及显示装置
CN203744036U (zh) * 2014-03-19 2014-07-30 京东方科技集团股份有限公司 一种背光模组及显示装置

Also Published As

Publication number Publication date
CN103899989B (zh) 2016-12-07
CN103899989A (zh) 2014-07-02
US10208918B2 (en) 2019-02-19
US20160047523A1 (en) 2016-02-18

Similar Documents

Publication Publication Date Title
WO2020113913A1 (zh) 一种显示面板及显示装置
JP5281082B2 (ja) 照明装置、表示装置、並びに導光板
JP4185721B2 (ja) 照明装置及び液晶表示装置
US20060221611A1 (en) Back light unit and liquid crystal display employing the same
JP2012182023A (ja) 面光源装置、液晶表示装置、及びテレビジョン受信機
US20110227895A1 (en) Backlight unit, illumination device, and display device
CN107850804A (zh) 广角成像定向背光源
JP2006318700A (ja) バックライト装置及び液晶表示装置
US20120105508A1 (en) Backlight device, image display apparatus comprising same, and driving method
JP2011009208A (ja) バックライト装置、導光板、及びこれを適用したディスプレイ装置
JP2011100728A (ja) 導光板、ＢＬＵ及びディスプレイ装置｛ＬｉｇｈｔＧｕｉｄｅＰａｎｅｌ、ＢａｃｋＬｉｇｈｔＵｎｉｔａｎｄＤｉｓｐｌａｙＡｐｐａｒａｔｕｓ｝
KR20140039357A (ko) 백라이트 유닛 및 이를 포함하는 표시장치
WO2015139423A1 (zh) 一种背光模组及显示装置
CN203744036U (zh) 一种背光模组及显示装置
JP2009229791A (ja) 液晶表示装置
JP2012252937A (ja) 光源デバイスおよび表示装置
JP2005321754A (ja) 表示装置
US20140313772A1 (en) Illumination device, and display device provided therewith
JP2006134661A (ja) 面状光源及びこれを用いた液晶表示装置
JP6000161B2 (ja) 面光源装置および液晶表示装置
JP2016173418A (ja) 画像表示装置及び収納庫
US9229146B2 (en) Backlight module
WO2014148099A1 (ja) 光源デバイスおよび表示装置、ならびに電子機器
KR20170080313A (ko) 백라이트 유닛 및 이를 구비한 액정표시장치
WO2014000324A1 (zh) 非对称菱镜结构、导光板、背光模组及其使用

Legal Events

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

Ref document number: 14437179

Country of ref document: US

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

Ref document number: 14886227

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 1205 DATED 25.11.2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14886227

Country of ref document: EP

Kind code of ref document: A1