CN205485195U - 可调控的背光模组 - Google Patents

可调控的背光模组 Download PDF

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CN205485195U
CN205485195U CN201620270807.1U CN201620270807U CN205485195U CN 205485195 U CN205485195 U CN 205485195U CN 201620270807 U CN201620270807 U CN 201620270807U CN 205485195 U CN205485195 U CN 205485195U
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guide plate
light guide
backlight
regulatable
data analysis
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程艳
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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    • 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
    • G02B6/0066—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 characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
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    • 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
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    • 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
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    • 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
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    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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    • G—PHYSICS
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    • 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
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    • G02F1/1336—Illuminating devices
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • G—PHYSICS
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    • 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
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    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)

Abstract

本实用新型提供一种可调控的背光模组，包括一图像数据采集装置，一用户数据采集装置，一数据分析装置，分别连接至所述图像数据采集装置及所述用户数据采集装置；一控制器，连接至所述数据分析装置；以及一LCD背光源，连接至所述控制器。本实用新型可以根据用户对显示器亮度或色域的需求，利用控制器及控制电路对双色LED芯片分别进行独立控制，以调节LED芯片的开关及光强大小，进而调节整个模组的色域和亮度，实现对色域和亮度的实时有效控制，既可以随时调整色域，又可以平衡亮度，有效提高显示器的画面品质。

Description

可调控的背光模组
技术领域
本实用新型涉及一种用于液晶显示器的背光模组，特别是一种可调控的背光模组。
背景技术
LCD背光源(BackLight)是位于液晶显示器(LCD)背后的一种光源，它的发光效果将直接影响到液晶显示模块(LCM)视觉效果。
高色域显示是当前显示器设计中共同追求的目标，但是单一的色域以及色彩表现模式已经无法满足客户的多样化需求。一般而言，色彩再现范围越高，光效则越低，即低色域白光具有低色彩再现范围、高光效，而高色域白光具有高色彩再现范围、低光效。也就是说，显示器的色彩再现范围与光效(亮度)是成反比的，因此，如何能实现色域调节，同时又能平衡显示器的亮度，已经成为背光模组设计中的一个重要课题。
现有技术中，LCD显示器中的背光模组，一般采用单色LED芯片(如蓝光芯片)，结合单色荧光粉(如黄色荧光粉)或双色荧光粉(如红色荧光粉及绿色荧光粉)，以表现出白光效果，其不足之处在于，这种背光模组的显示效果较差、色域较低；还有一种方案是利用双色LED芯片(如蓝光芯片及红光芯片)，结合单色荧光粉(如黄色荧光粉)表现出白光效果，其色域较好。然而，上述几种技术方案都没有根据用户对亮度或色域的需求对LED芯片进行独立控制的功能。
实用新型内容
本实用新型的目的在于，提供一种可调控的背光模组，有效解决现有技术中存在的色域单一、光效较低、可控性差等技术问题。
为实现上述目的，本实用新型提供一种可调控的背光模组，包括一图像数据采集装置，一用户数据采集装置，一数据分析装置，分别连接至所述图像数据采集装置及所述用户数据采集装置；一控制器，连接至所述数据分析装置；以及一LCD背光源，连接至所述控制器。其中，所述LCD背光源包括至少一LED单元；每一LED单元包括一蓝光芯片及一红光芯片；多个LED单元中所有蓝光芯片依次串联至所述控制器；多个LED单元中所有红光芯片依次串联至所述控制器。
进一步地，所述图像数据采集装置包括一图像亮度采集模块，连接至所述数据分析装置；以及一图像色域采集模块，连接至所述数据分析装置。
进一步地，所述用户数据采集装置包括一用户亮度采集模块，连接至所述数据分析装置；以及一用户色域采集模块，连接至所述数据分析装置。
进一步地，所述背光模组还包括一输入设备，连接至所述用户数据采集装置。
进一步地，所述背光模组还可以包括一导光板；所述LCD背光源位于所述导光板侧面；一底部反射板，设于所述导光板下表面；一光学膜片，设于所述导光板上表面；以及一荧光层，设于所述LCD背光源与所述光学膜片之间。所述荧光层位于所述LCD背光源与所述导光板之间，其一侧面贴合于所述LCD背光源，其另一侧面贴合于所述导光板。所述荧光层位于所述导光板与所述光学膜片之间，其一侧面贴合于所述导光板，其另一侧面贴合于所述光学膜片。
进一步地，所述荧光层为黄色荧光粉膜或荧光管。
本实用新型的优点在于，提供一种可调控的背光模组，根据用户对显示器亮度或色域的需求，利用控制器及控制电路对双色LED芯片分别进行独立控制，以调节LED芯片的开关及光强大小，进而调节整个模组的色域和亮度，实现对色域和亮度的实时有效控制，既可以随时调整色域，又可以平衡亮度，有效提高显示器的画面品质。
附图说明
图1所示为本实用新型实施例的电路结构示意图；
图2所示为本实用新型实施例一种结构的示意图；
图3所示为本实用新型实施例另一种结构的示意图；
图中部件标识如下：
1、图像数据采集装置，2、用户数据采集装置，3、数据分析装置，4、控制器，5、LCD背光源，6、输入设备；
11、图像亮度采集模块，12、图像色域采集模块；
21、用户亮度采集模块，22、用户色域采集模块；
51、LED单元，52、LED单元，53、LED单元；
101、导光板，102、底部反射板，103、光学膜片，104、荧光层；
511、蓝光芯片，512、红光芯片。
具体实施方式
以下参考说明书附图介绍本实用新型的一个优选实施例，证明本实用新型可以实施，这些实施例可以向本领域中的技术人员完整介绍本实用新型，使其技术内容更加清楚和便于理解。本实用新型可以通过许多不同形式的实施例来得以体现，本实用新型的保护范围并非仅限于文中提到的实施例。
在附图中，结构相同的部件以相同数字标号表示，各处结构或功能相似的组件以相似数字标号表示。附图所示的每一组件的尺寸和厚度是任意示出的，本实用新型并没有限定每个组件的尺寸和厚度。为了使图示更清晰，附图中有些地方适当夸大了部件的厚度。
本实用新型所提到的方向用语，例如「上」、「下」、「前」、「后」、「左」、「右」、「内」、「外」、「侧面」等，仅是附图中的方向，只是用来解释和说明本实用新型，而不是用来限定本实用新型的保护范围。
当某些组件被描述为“在”另一组件“上”时，所述组件可以直接置于所述另一组件上；也可以存在一中间组件，所述组件置于所述中间组件上，且所述中间组件置于另一组件上。当一个组件被描述为“安装至”或“连接至”另一组件时，二者可以理解为直接“安装”或“连接”，或者一个组件通过一中间组件间接“安装至”、或“连接至”另一个组件。
如图1所示，本实用新型提供一种可调控的背光模组，包括一图像数据采集装置1、一用户数据采集装置2、一数据分析装置3、控制器4、一LCD背光源5以及一输入设备6。
图像数据采集装置1包括一图像亮度采集模块11，连接至数据分析装置3；用以采集显示器上实时显示图像的亮度数据，并将实时图像的亮度数据传送至数据分析装置3。图像数据采集装置1还包括一图像色域采集模块12，连接至数据分析装置3；用以采集显示器上实时显示图像的色域数据，并将实时图像的色域数据传送至数据分析装置3。
用户数据采集装置2包括一用户亮度采集模块21，连接至数据分析装置3；用以采集用户所需图像亮度数据，并将用户所需亮度数据传送至数据分析装置3。用户数据采集装置2还包括一用户色域采集模块22，连接至数据分析装置3；用以采集用户所需图像色域数据，并将用户所需图像色域数据传送至数据分析装置3。输入设备6连接至用户数据采集装置2，具体地说，分别连接至用户亮度采集模块21及用户色域采集模块22；用以输入用户所需图像数据，包括图像亮度及图像色域。输入设备6可以为键盘或触摸屏。
数据分析装置3主体为一个数据处理器，从图像数据采集装置1、用户数据采集装置2获取上述数据后，对相关数据进行对比分析。数据分析装置3将所述用户所需图像亮度与所述当前图像亮度作对比，其差值即为一图像亮度校正数据(需要调整的亮度值)。假设当前图像亮度为S cd/m2，用户所需图像亮度为T cd/m2；若S大于T，则需要将图像亮度调大(T-S)cd/m2，数据分析装置3根据相关的公式计算需要将通过LCD背光源的电流调大；若S小于T，则需要将图像亮度调小(S-T)cd/m2，数据分析装置3根据相关的公式计算需要将通过LCD背光源的电流调小；若S等于T，则无需做出任何调整。数据分析装置3将所述用户所需图像色域与所述当前图像色域作对比，其差值即为一图像色域校正数据(需要调整的色域值),数据分析装置3根据相关的公式计算需要将通过蓝光芯片和/或红光芯片的电流值调大、调小或不调整。经对比分析及公式计算后，数据分析装置3即可得出需要将通过蓝光芯片的电流值调大或调小或不调，以及将通过红光芯片的电流值调大或调小或不调的分析结论。
LCD背光源5通过控制器4连接至数据分析装置3。LCD背光源5包括至少一LED单元51、52、53……；每一LED单元包括一蓝光芯片及一红光芯片，例如LED单元51包括一蓝光芯片511及一红光芯片512；多个LED单元中所有蓝光芯片依次串联至控制器4，多个LED单元中所有红光芯片依次串联至控制器4，控制器4可以同时控制或调整所有蓝光芯片、所有红光芯片的发光功率。
控制器4的主体为一LED驱动控制电路，控制器4获取数据分析装置3的分析结论，并且向LCD背光源5中的蓝光芯片和/或红光芯片发出控制指令，以调整通过蓝光芯片和/或红光芯片的实时电流值，从而达到调整显示器亮度和/或色域的目的。
如图2所示，本实施例还可以包括一导光板101，LCD背光源5位于导光板101侧面；一底部反射板102，设于导光板101下表面；一光学膜片103，设于导光板101上表面；以及一荧光层104，设于LCD背光源5与光学膜片103之间。荧光层104为黄色荧光粉膜或荧光管，荧光层104也可以为量子点介质层。具体地说，荧光层104可以位于LCD背光源5与导光板101之间，其一侧面贴合于LCD背光源5，其另一侧面贴合于导光板101。只有纯蓝光与纯红光的混光是不能形成白光的，因此需要黄色荧光粉提供纯黄色光。如图3所示，荧光层104还可以位于导光板101与光学膜片103之间，其一侧面贴合于导光板101，其另一侧面贴合于光学膜片103。
本实用新型的技术效果在于，可以根据客户对画面亮度和色域的具体需求，利用控制器及驱动电路对LED芯片的电流及输出功率进行调整，从而及时调整显示器的画面亮度和色域。同时，在不改变LED数量的情况下，增加了单颗LED的亮度，提高了画面品质，而且操作简单，使用方便。
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员，在不脱离本实用新型原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本实用新型的保护范围。

Claims (8)

1.一种可调控的背光模组，其特征在于，包括
一图像数据采集装置；
一用户数据采集装置；
一数据分析装置，分别连接至所述图像数据采集装置及所述用户数据采集装置；
一控制器，连接至所述数据分析装置；以及
一LCD背光源，连接至所述控制器；
其中，所述LCD背光源包括至少一LED单元；每一LED单元包括一蓝光芯片及一红光芯片；多个LED单元中所有蓝光芯片依次串联至所述控制器；多个LED单元中所有红光芯片依次串联至所述控制器。
2.如权利要求1所述的可调控的背光模组，其特征在于，所述图像数据采集装置包括
一图像亮度采集模块，连接至所述数据分析装置；以及
一图像色域采集模块，连接至所述数据分析装置。
3.如权利要求1所述的可调控的背光模组，其特征在于，所述用户数据采集装置包括
一用户亮度采集模块，连接至所述数据分析装置；以及
一用户色域采集模块，连接至所述数据分析装置。
4.如权利要求1所述的可调控的背光模组，其特征在于，所述背光模组还包括一输入设备，连接至所述用户数据采集装置。
5.如权利要求1所述的可调控的背光模组，其特征在于，所述背光模组还包括
一导光板，所述LCD背光源位于所述导光板侧面；
一底部反射板，设于所述导光板下表面；
一光学膜片，设于所述导光板上表面；以及
一荧光层，设于所述LCD背光源与所述光学膜片之间。
6.如权利要求5所述的可调控的背光模组，其特征在于，所述荧光层位于所述LCD背光源与所述导光板之间，其一侧面贴合于所述LCD背光源，与该侧面相对的另一侧面贴合于所述导光板。
7.如权利要求5所述的可调控的背光模组，其特征在于，所述荧光层位于所述光学膜片与所述导光板之间，其一侧面贴合于所述光学膜片，与该侧面相对的另一侧面贴合于所述导光板。
8.如权利要求5-7中任一项所述的可调控的背光模组，其特征在于，所述荧光层为黄色荧光粉膜或荧光管。
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