CN109154743A - 用于光漫射的方法和设备 - Google Patents

用于光漫射的方法和设备 Download PDF

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Publication number
CN109154743A
CN109154743A CN201780027031.8A CN201780027031A CN109154743A CN 109154743 A CN109154743 A CN 109154743A CN 201780027031 A CN201780027031 A CN 201780027031A CN 109154743 A CN109154743 A CN 109154743A
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CN
China
Prior art keywords
led
substrate
reflecting element
diffusing globe
equipment according
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CN201780027031.8A
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English (en)
Inventor
科迪·彼得森
安德鲁·胡斯卡
M·汉森
克林特·亚当斯
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Rohinni LLC
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Rohinni LLC
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Publication of CN109154743A publication Critical patent/CN109154743A/zh
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Abstract

一种设备包括衬底和LED，所述LED经由所述LED的第一侧上的导电衬垫而附接到所述衬底。所述LED包括：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧，以便在远离所述衬底的方向上反射光；以及第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧。所述第二反射元件设置成主要在朝向所述衬底的方向上反射光。

Description

用于光漫射的方法和设备
相关专利申请的交叉引用
本申请要求在2016年3月18日提交的标题为“Method and Apparatus for LightDiffusion”的美国专利申请号15/075,001的优先权，并且将所述申请的内容以引用的方式整体并入。本申请进一步以引用的方式整体并入在2015年11月12日提交的标题为“Methodand Apparatus for Transfer of Semiconductor Devices”的美国专利申请号14/939,896。
背景技术
基础液晶显示器(LCD)的层经过结构化。LCD的背面具有镜面，这使得其具有反射性。随后，添加在底侧上具有偏振膜的一块玻璃以及顶部上的由氧化铟锡制成的共同电极平面。共同电极平面覆盖LCD的整个区域。在其上方是液晶物质层。接下来是在底部上具有电极的另一块玻璃以及顶部上的与第一偏振膜成直角设置的另一偏振膜。
所述电极连接到电源。当未施加电流时，穿过LCD的前方进入的光将仅仅撞击所述镜面并且往回反弹出。但当电源将电流供应给所述电极时，共同电极平面与形状像矩形的电极之间的液晶反扭并阻止那个区中的光穿过。这使得LCD将显示器示出为黑色。
可以示出色彩的LCD的像素通常具有三个子像素，所述三个子像素具有红色、绿色和蓝色滤色器以产生每个彩色像素。通过控制和改变施加到子像素的电压，每个子像素的强度的范围可以包括多个色度(例如，256个色度)。组合所述子像素会产生可能的多得多的色彩的调色板(例如，1680万种色彩(256个红色色度×256个绿色色度×256个蓝色色度))。
LCD技术在不断演变。如今的LCD采用液晶技术的若干变化形式，包括超扭曲向列(STN)、双扫描扭曲向列(DSTN)、铁电液晶(FLC)以及表面稳定铁电液晶(SSFLC)。
此外，一般来说，用于将光提供给LCD的光源通常置于两个地方之一。在一些情况下，沿着LCD的边缘可以是冷阴极荧光(CCFL)或者发光二极管(LED)的阵列，从而形成常常被称为“侧光”LCD的东西，这是因为光被发射到漫射器的侧边缘中。在其他情况下，光源可以在显示器的前方的平面后方被布置成阵列或者矩阵，从而形成常常被称为“背光”LCD的东西，这是因为光从显示器的背表面被发射到漫射器中。在任一情况下，使用包括漫射器的光学系统来使光散开，这些光从背后照亮显示器的像素。实际上，这些光通常是显示器中的仅有的光。
所述光学系统包括第一片材，所述第一片材形成所述光的白色背景。下一个零件是所谓的“光导板”(LGP)或者盖板。当光从侧光显示器中的LGP的边缘进入时，所述光通过全内反射传播穿过所述板的长度和宽度，除非所述光撞击所述LGP内的许多点中的一者。所述点使得光线中的一些光线从前方出去。接下来，添加漫射器膜以有助于从光导板消除点图案。之后，可以添加“棱镜膜”。之所以使用这个是因为来自背光的光不仅显现为垂直于背表面而且还处于斜角。此棱镜膜增加了光发射的垂直度。最后，可以添加另一漫射器膜以试图有助于均匀地照亮显示表面的平面。实质上，LGP、棱镜膜以及漫射器膜的目的统统是充当漫射器层来散布光源的光发射，以试图使得光跨越显示表面的整个平面显得是均匀的，从而使得光发射的源点处的亮点的强度最小化。
不管LCD是侧光还是背光，所使用的常规LED的大小影响了LCD的厚度以及漫射光所需的漫射器的大小。
关于在常规显示器中使用的LED的大小，最终结果是通过根据常规方法的制造和组装过程来确定。具体来说，LED半导体装置的制造通常涉及具有无数步骤的复杂制造过程。制造的最终产品是“封装好的”半导体装置。“封装好的”修饰语是指构建到最终产品中的外壳和保护特征以及使得封装中的装置能够并入到最终电路中的接口。此封装影响LED的厚度。
值得注意的是，半导体装置的常规的制造过程开始于处置半导体晶片。将晶片切块为众多“未封装”的半导体装置，例如LED。“未封装”修饰语是指没有保护特征的未封围的LED。在本文，出于简单起见，未封装的LED可以被称为“裸片”。在一些情况下，未封装的LED的厚度可以是50微米或者更小。
附图说明
参考附图陈述具体实施方式。在图中，参考数字的最左边数字识别了所述参考数字第一次出现所在的图。在不同的图中使用相同的参考数字会指示类似或相同的项目。此外，图式可以被视为提供个别图内的个别组件的相对大小的近似描绘。然而，图式未按比例，并且个别图和不同图内的个别组件的相对大小可以不同于所描绘的大小。具体来说，一些图可以将组件描绘为特定大小或者形状，而其他图可以出于清晰起见而在更大的尺度上或者不同形状地描绘相同的组件。
图1说明光一般如何从常规的LED发射。
图2说明根据本申请的实施方案的设备的侧面横截面视图。
图3说明根据本申请的另一实施方案的设备的侧面横截面视图。
图4说明根据本申请的另一实施方案的设备的侧面横截面视图。
图5说明根据本申请的实施方案的设备的平面图。
图6说明根据本申请的实施方案的设备的侧面横截面视图。
图7说明根据本申请的另一实施方案的设备的侧面横截面视图。
图8说明根据本申请的实施方案的设备的平面图。
图9说明根据本申请的实施方案的示例性方法。
图10说明根据本申请的实施方案的示例性方法。
具体实施方式
概述
本公开一般针对于用于跨越(例如)具有LCD的装置的显示表面的平面有效并一致地漫射光的方法和设备。举例来说，本申请提供关于“嵌套式漫射器”的方法和设备的描述。嵌套式漫射器的本文描述的特征增加了光的漫射(以先前方法相比)，同时使得用于跨越显示表面提供均匀的光分布的光源的数目最小化，从而降低制造成本且/或使得显示器的厚度最小化。本文使用术语“嵌套式漫射器”来描述在LCD的其中光被漫射的同一层内发生光漫射的特征，即，在光源的大致高度/厚度处在漫射器内发生光漫射。换句话说，光源可以设置或者“嵌套”在LCD的提供光漫射的层内。因此，嵌套式漫射器。通过将光源直接设置在光漫射层内，可以减小LCD的总厚度。
此外，至少部分由于所使用的光源的极小的大小和光漫射的方式，可以减小在其上应用本申请的方法或设备的装置的厚度。具体来说，可以将漫射器的厚度减小到大致光源的高度。在一些情况下，所述光源可以选自封装好的或未封装的LED。与使用封装好的LED的显示器相比，使用未封装的LED增加了制成更薄的显示器的能力。
图1说明常规LED 102的光发射100的近似图案。也就是说，由于常规LED 102的性质，光一般在环绕LED 102的多个方向上发射。如所示，通过虚线圆形和箭头线出于说明的目的而描绘的光发射图案104指示光从LED 102的顶侧和LED 102的底侧以及部分从其侧边发射。应注意，光发射图案104可以不受限于如图1中描绘的确切图案。在一些情况下，常规的LED 102可以包括LED 102的单侧上的半反射性表面或镜状表面(未示出)。
在此常规配置中，当LED 102附接到具有借以向LED 102供电以发射光的电路的衬底(未示出)时，图1的光发射图案104指示从LED 102发射的光的大致一半将指向LED 102连接到的衬底。依据衬底的形态和材料特性以及将在使用LED 102的装置中实施衬底的方式，一般会丢失朝向所述衬底发射的光或者所述光对照明装置的既定目的具有最小的贡献。
LED的说明性实施方案和均匀光漫射的嵌套漫射器
根据本申请的实施方案，图2说明体现光源阵列的设备200，所述光源阵列可以按照跨越与显示表面的平面相对应的漫射器的平面而分布的多个行和列而布置，从而形成嵌套式漫射器。另外和/或替代地，所述光源可以在整个漫射器上按照除了行和列之外的图案分布。
在说明性实施方案中，设备200可以包括衬底202和固定到衬底202的多个LED(例如，LED 204A、204B)。应注意，在一些情况下，可以存在仅一个LED。LED 204A、204B可以是在顶侧上具有电触点的标准LED，或者可以是在底侧上具有电触点的倒装芯片。衬底202包括电路迹线(在稍后更详细地示出和论述)，LED 204A、204B经由所述电路迹线而附接到衬底202并且被供电。因此，衬底202可以是电路板，例如印刷电路板(PCB)。另外，衬底202可以由聚合物形成为具有与LED 204A、204B的高度大致相同的厚度的薄膜。用于衬底202的合适的材料包括即使由于一个或多个LED中的电流流动而引起的潜在温度变化也能够维持结构完整性的多种材料，例如PET。
安装到衬底202的LED可以依据技术需要而分别具有不同的结构配置，或者所有LED可以具有类似的结构配置。如关于LED 204A(LED 204B示出类似的配置)所描绘和论述，LED 204A包括第一反射元件206A和第二反射元件206B。第一反射元件206A可以形成于LED204A的与LED 204A的附接到衬底202的侧面相对的侧面上，以便朝向衬底反射光。第二反射元件206B可以形成于LED 204A的附接到衬底202的侧面上。
此外，第一反射元件206A和第二反射元件206B可以是镜状表面。在一些情况下，第一反射元件206A和第二反射元件206B是由金属镜接触件形成。铝(Al)和银(Ag)是对于蓝色LED波长范围具有最高反射率的金属。全向反射元件可以由具有不同折射率的介电材料的堆叠制成。这些介电材料可以包括TiO2、SiO2、HfO2、Ta2O5等。另外，和/或替代地，可以使用白色漫射性基于聚合物的反射元件材料(其可为嵌入有一些TiO2状颗粒的纺成纤维)。应注意，第一反射元件206A和第二反射元件206B可以由相同的材料或者不同的材料形成。也就是说，第一反射元件206A可以由第一材料形成，并且第二反射元件206B可以由不同于所述第一材料的第二材料形成(例如，第一反射元件206A可以是铝并且第二反射元件206B可以是银，或者反之亦然)。
因为上文描述的LED的设计和结构在引导所发射的光方面是有用的，所以可以将LED 204A、204B实施为侧光LCD中的LED，以从边缘(未示出)将光发射聚焦到光导板中以及嵌套在如本文描述的漫射器中。
在一些情况下，可以首先将多个LED 204A、204B放置在衬底202上，并且可以使漫射器208与所述多个LED 204A、204B对准以便将多个LED 204A、204B嵌套在漫射器208内。替代地，可以将多个LED 204A、204B直接嵌套在漫射器208中，随后使所述漫射器与衬底202上的电路对准。如所描绘，可以将玻璃、塑料或者其他合适的透明或者半透明材料的显示面板209放置在LED和漫射器208的与衬底202相对的侧上，以便将多个LED 204A、204B和漫射器208夹在其间。漫射器208充当光导或漫射器板以辅助跨越显示面板209均匀地分布由多个LED 204A、204B发射的光。漫射器208的材料可以包括硅胶、聚碳酸酯(PC)、聚对苯二甲酸乙二醇酯(PET)、玻璃等。此外，漫射器208可以是薄的可模制的聚合物片材。
在一些情况下，如所示，可以将第三反射元件210设置或者涂覆在衬底202的表面上以至少部分覆盖衬底202的表面的在相邻LED之间(在204A和204B之间)的区域，或者设置或涂覆在漫射器208的表面上。第三反射元件210的材料可以由反射材料形成，例如上文关于第一反射元件206A和第二反射元件206B所论述的反射材料，包括铝、银等。第三反射元件210的材料有助于使光吸收最小化，或者另外使衬底202对所发射的光的不利影响最小化，例如穿过漫射器208中的相邻LED之间的衬底202。在一些情况下，衬底202可以由固有反射的材料形成。替代地，可以不需要第三反射元件，因为第三反射元件对于特定技术目的可能是不合意的。举例来说，可能是合意的是，衬底202是透明或者半透明的，以允许穿过衬底202的一些光发射。
LED 204B的横截面特写视图212描绘光发射214的反射，其指示光发射214可以在第一反射元件与第二反射元件之间来回反射，直到到达LED 204B的侧边为止。在到达LED204B的侧边之后，光发射214进入漫射器208中。以此方式，能够捕获几乎所有的所发射的光并且将所述光引导向显示面板209，从而损失极少量的光。
另外，和/或替代地，在一些情况下，设置在LED的与衬底202相对的侧面上的反射元件222可以由在提供部分反射表面的同时仍然稍微半透明的材料形成，以便准许一些光发射216穿过所述反射表面并且穿过显示面板209出来。举例来说，所述反射表面可以由非常薄的银层(例如，小于特定厚度)形成。
在图2的视图212中还描绘LED 204B的导电衬垫218，所述导电衬垫用于传导电力并且经由电路迹线220将LED 204B附接到衬底202。可以由经由丝网印刷、喷墨印刷、激光印刷、手动印刷或者其他印刷手段而设置的导电油墨来形成电路迹线220。此外，电路迹线220可以是预先固化和/或半干燥或者干燥的，以提供额外的稳定性，同时仍然可激活来用于裸片导电目的。还可以使用湿导电油墨来形成电路迹线220，或者可以使用湿和干燥油墨的组合来用于电路迹线220。替代地，或者另外，电路迹线220可以预先形成为电线迹线，或者经过光蚀刻，或者由熔化材料形成为电路图案并且随后粘附、嵌入或者以其他方式固定到衬底202。
电路迹线220的材料可以包括(但不限于)银、铜、金、碳、导电聚合物等。在一些情况下，电路迹线220可以包括涂覆有银的铜颗粒。电路迹线220的厚度可以依据所使用的材料的类型、既定功能以及适当的强度或灵活性而变化，以实现所述功能、能量容量、LED的大小等。举例来说，电路迹线的厚度的范围可以从约5微米到20微米、从约7微米到15微米，或者从约10微米到12微米。
关于如视图212中所示的LED 204B的反射元件，在一些情况下，反射元件222可以跨越LED 204B的整个宽度延伸，或者替代地，反射元件224可以基本上跨越或者部分跨越LED 204B的宽度延伸。可以在LED的任一侧上使用跨越延伸LED的整个宽度延伸的反射元件或者仅部分跨越LED的宽度延伸的反射元件。另外，和/或替代地，LED内的两个反射元件可以是相同大小并且一直跨越LED的宽度或者部分跨越LED的宽度延伸。
类似于图2，在图3中描绘的设备300包括电路衬底302，在所述电路衬底上设置有多个LED 304A、304B。每个LED 304A、304B可以包括反射表面306A、306B。漫射器308邻近于衬底302而与多个LED 304A、304B对准，以便与多个LED 304A、304B嵌套。在一些情况下，衬底302可以由固有反射的材料形成。替代地，可以不需要第三反射元件，因为第三反射元件对于特定技术目的可能是不合意的。举例来说，可能是合意的是，衬底302是透明或者半透明的，以允许穿过衬底302的一些光发射。
如图3中描绘，显示面板310与衬底302相对地设置，从而夹住嵌套式漫射器308。在图3中示出的额外细节包括以下变化：将LED 304A、304B光学地耦合到漫射器308，以增强来自离开LED并进入漫射器308中的光的光传输。在一些实施方案中，在LED的边缘与漫射器之间可以存在相对很少或者没有间隙或间距(相对于LED的极小的大小)。因此，在以上实施方案中，在LED的侧边与邻接的漫射器壁之间直接出现光学耦合。应注意，所有图出于描述清晰起见而描绘某一最小间距以示出不同组件之间的区别。然而，图2和图6可以表示在LED与漫射器之间没有间隙或间距。
另外，和/或替代地，在一些情况下，在LED 304A与漫射器308之间有意包括间隙或间距，可以在所述间隙或间距中并入不同的光学耦合。在包括间隙的实施方案的一些情况下，可以将磷光体330沉积在LED 304A上以及至少沉积在LED 304A的侧面周围，以便通过在间隙中进行填充并且在光发射进入漫射器308之前漫射所述光发射来将LED 304A和漫射器308光学耦合。当需要白光时，使用磷光体是特别有用的。在包括间隙的实施方案的其他情况下，可以将例如硅胶、磷光体等材料340沉积在LED 304B的侧面周围，以便通过在间隙中进行填充并且在光发射进入漫射器308之前漫射所述光发射来将LED 304B和漫射器308光学耦合。应注意，被描绘为穿过LED 304A和304B的顶表面的光发射的数量是不同的。如先前提及，相应LED之间的反射表面306A和306B的透明度可能相差完全不透明的范围，以允许所要量的光直到显示面板310。
另外，预期嵌套式漫射器(208、308)的结构概念，并且所述嵌套式漫射器以多种方式被配置成用于光分布和漫射。也就是说，可以在没有显示面板的情况下植入所述嵌套式漫射器，并且所述嵌套式漫射器适合于为除了LCD之外的装置提供漫射光。在一些情况下，所述嵌套式漫射器包括在开放空腔或者通孔中嵌套在其中的LED，如图2和图3中描绘。另外，和/或替代地，LED或者其他光源在一个或多个侧面上可以被漫射器衬底的材料覆盖。另外，此类漫射器的说明性实施方案是图4中的设备400。设备400包括漫射器衬底402，所述漫射器衬底中嵌入或嵌套有光源404(例如，LED)。漫射器衬底402的平均厚度可以薄于光源404的高度(例如，范围是约12微米到约100微米，或者约25微米到约80微米，或者约35微米到约50微米等)。可以在凸起部分406中模制或者以其他方式形成漫射器衬底402以覆盖光源404的至少一侧。同样地，漫射器衬底402可以至少部分覆盖光源404的底侧。光源404包括导电衬垫408，可以使用所述导电衬垫向光源404供电。
此外，光源404可以包括或者可以不包括一个或多个像在LED 204A、204B、304A、304B上描绘的反射元件那样的反射元件。预期漫射器衬底402可以包括纹理特征(在本文进一步论述)以辅助漫射从光源发射的光。举例来说，在一些情况下，漫射器衬底可以与所嵌套的光源的高度一样厚或者厚于所述高度，并且可以向漫射器衬底的表面添加纹理。
因此，本文论述的嵌套式漫射器的实现方式不限于在LCD中使用，并且所述嵌套式漫射器可以用作用于众多其他用途的平坦或衬底漫射光源。
图5描绘LED 500的平面图。LED 500可以包括用于产生光的半导体材料502的一个或多个层。LED 500还包括电流扩散层504A、504B，所述电流扩散层辅助将电力安全地提供给LED 500，经由导电衬垫506A、506B将所述电力传导到LED 500。在一些情况下，可以对被选择用于电流扩散层504A、504B的材料进行选择，并且与半导体材料502一起设置，以便充当LED 500的侧面中的一者上的第一反射元件，而相对的侧面可以包括第二反射元件。电流扩散层504A、504B不限于在图5中描绘的相对大小。也就是说，电流扩散层504A、504B可以相对于导电衬垫506A、506B更大或者更小，这取决于所要的反射特性以及所需的功能性方面。此外，电流扩散层504A、504B的厚度可以改变以增加或减小反射率。
如图6中描绘，设备600的侧面横截面包括电路衬底602，在所述电路衬底上设置有嵌套在漫射器606内的LED 604的阵列。所述阵列的LED 604可以是根据本申请的包括第一反射元件和第二反射元件(如所示但未标记)的LED。在具有LED 604的阵列的衬底602与显示面板608之间的光学距离间距Y可以依据LED 604的厚度和穿过漫射器606的漫射的效能而变化。LED 604的阵列可以按照具有LED 604的若干列和行的矩阵而跨越电路衬底602的表面布置。(参见图8的平面图)。相邻LED的图心之间的LED间隔距离X可以依据LED 604的大小以及穿过漫射器606和显示面板608的漫射的效能而变化。应注意，距离X最终受到相邻LED的宽度限制。此外，距离Y最终受到衬底602上的LED的高度限制。
在许多情况下，衬底602与显示面板608之间的高度的间距与相邻LED 604之间的间距相关。所述相互关系依据所使用的LED的数目、漫射的效能、所要的亮度、装置的所要厚度等而变化。最终，目标是为用户提供跨越显示面板608的整个表面的均匀的照明，同时使LED的数目最少化以节约成本和功耗，并且使衬底602与显示面板608之间的距离Y最小化，以便使显示器的总厚度尽可能薄。一般来说，随着Y的值减小，X的值也减小，这意味着阵列中的LED的数目会增加以均匀地照亮显示器而没有在视觉上明显的光点。
为了使在减小距离Y时所需的LED的数目最小化，可以向漫射器的表面和/或主体添加纹理。举例来说，在图7中，设备700的侧面横截面VII(参见图8)描绘电路衬底702，所述电路衬底具有设置在上面的嵌套在漫射器706中的LED 704的阵列。衬底702与显示面板708之间的距离Y可以变化。在一些情况下，漫射器706可以包括纹理特征710。纹理特征710可以朝向衬底702凹入，如图7中描绘，或者它们可以是凸的(未示出)。另外，和/或替代地，纹理特征710可以包括凹结构和凸结构的组合。可以按某一图案来组织纹理特征710，或者可以跨越表面或者在漫射器706内随机地设置纹理特征。
应注意，在图7中在一些情况下被描绘为半圆并且在其他情况下被描绘为带峰凹部的纹理特征710可以是对于漫射来自LED 704的光来说是有效的其他已知或者随机的形状。举例来说，纹理特征710可以是三角形、锥体、球形、矩形、六边形等。图7中的纹理特征710的形状仅表示根据本申请的示例性实施方案。此外，虽然在图7中描绘的纹理特征依据远离LED 704的距离而在深度和宽度上增加，但在一些情况下，可以仅改变深度或者仅改变宽度来实现光的均匀漫射。因此，其他预期的纹理特征包括具有相同的宽度但深度增加的特征(例如，进入漫射器的宽度相同且深度增加的管状形状)；以及具有相同的深度但广度增加的特征(例如，进入漫射器的深度相同且随着距光源的距离而变化的跨越漫射器的递增的宽度的煎饼状凹部)。
除了在LED上使用第一反射元件和第二反射元件来用于漫射由LED发射的光穿过显示面板之外，纹理特征，例如上文描述的纹理特征，可以与所述反射元件组合作用以提供更均匀照亮的显示表面。在一些情况下，如在图8中的漫射器706的平面图中所见，漫射器706可以包括多个纹理特征710。在所述阵列中，在漫射器706上示出纹理特征，大圆800表示嵌套在漫射器706内的LED(未示出)的位置。大圆800不一定指示光在那个位置将是最亮，而是仅仅指示从嵌套在漫射器706中的LED发射的光的初始分布的源头。
将个别纹理特征802描绘为在与大圆800处的LED的位置的图心相距第一径向距离处的圆。将另一个别纹理特征804描绘为在与大圆800处的LED的位置的图心相距第二径向距离处的不同大小的圆。应注意，纹理特征804小于纹理特征802。此外，在纹理特征系列806中，出现一种图案，所述图案示出最靠近LED的纹理特征(例如，纹理特征804)的大小比沿径向进一步远离LED的纹理特征(例如，纹理特征802)小。也就是说，在一些情况下，随着纹理特征与LED之间的距离增加，纹理特征的大小可以增加，以便捕获更多的光并且进而漫射更多的光，从而通过整个漫射器706和叠加的显示面板提供均匀的照明。相关地，随着纹理特征与LED之间的距离减小，纹理特征的大小可以减小，以便减少在光源附近被捕获的光的量。
虽然在图8中看似纹理特征未跨越整个漫射器706延伸(即，在LED之间的没有纹理特征的大间隙)，但图8的说明仅意图作为实例并且因此出于描述清楚起见进行描绘，并且避免描绘的复杂性。然而，如区域808中所示，预期纹理特征可以跨越整个漫射器706连续地延伸。应注意，在相邻LED的一些情况下，纹理特征的大小可以达到大约为任何两个相邻LED之间的一半的最大大小。在区域808的中间示出的纹理特征(例如)可以由于它们在侧向相邻的LED之间的位置而被视为处于最大大小。出于清楚起见，当在两个LED之间没有嵌套在漫射器中的介入LED时，可以将所述两个LED视为侧向相邻。因此，在图8中，无论LED是对角设置、水平设置还是彼此垂直间隔地设置，所述LED都被视为相邻。
另外，和/或替代地，如先前指示，纹理特征可以在随机定位的同时均匀地分布以便维持漫射的均匀性。可以经由激光蚀刻、滚花、模制、刮削等来实现纹理特征的产生。
形成LED的方法的说明性实施方案
在图9中描绘根据本申请的实施方案的产生LED的方法900。方法900包括形成半导体的步骤902。在一些情况下，所述形成半导体的步骤可以类似于用于形成用作LED的半导体的步骤。在其他情况下，可以执行其他步骤。方法900还包括产生具有反射表面的第一反射元件的步骤904。在半导体的第一侧上产生第一反射元件，使得所述反射表面朝向半导体向内反射光。此外，在906处，产生具有反射表面的第二反射元件。在半导体的与半导体的第一侧相对的第二侧上产生所述第二反射元件，使得所述第二反射元件的反射表面朝向半导体并且朝向第一反射元件向内反射光。
在方法900中，所述第一反射元件和所述第二反射元件可以由例如铝、银、TiO2、SiO2、HfO2、Ta2O5或者白色漫射性基于聚合物的反射材料的材料形成。此外，所述第一反射元件和第二反射元件中的一者或两者可以形成为非常薄的层(例如，小于阈值距离)，使得所述反射元件在一定程度上是半透明的，同时仍然维持大体上反射的表面。
形成嵌套式漫射器的方法的说明性实施方案
在图10中描绘根据本申请的实施方案的产生嵌套式漫射器的方法1000。方法1000包括获得漫射器衬底的步骤1002。在一些情况下，所述获得漫射器衬底的步骤可以包括在衬底上产生上文论述的纹理特征的额外步骤。可以经由激光蚀刻、滚花、模制、刮削等来实现纹理特征的产生。替代地，在一些情况下，可以在先前已经将纹理特征添加到漫射器衬底，或者所述漫射器衬底可以完全不包括纹理特征。在其他情况下，可以执行其他步骤。方法1000还包括将一个或多个LED嵌套在漫射器衬底内的步骤1004。可以在将LED附接到电路衬底之前或之后执行步骤1004。此外，在1006处，将嵌套式漫射器设置在LCD设备中的任选的步骤。
示例性条款
A：一种设备包括：衬底；以及LED，所述LED经由所述LED的第一侧上的导电衬垫而附接到所述衬底，所述LED包括：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧，以便在远离所述衬底的方向上反射光；以及第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成主要在朝向所述衬底的方向上反射光。
B：根据段落A的设备，其中所述LED是第一LED，并且其中所述设备还包括第二LED，所述第二LED设置在所述衬底上并且与所述第一LED间隔开，并且其中在所述第一LED与所述第二LED之间的所述衬底的一部分包括反射表面，所述反射表面设置成在远离所述衬底的方向上反射光。
C：根据段落A-B中的任一者的设备，其中所述LED是第一LED，并且其中所述设备还包括第二LED，所述第二LED设置在所述衬底上并且与所述第一LED间隔开，并且其中所述第二LED包括以下各者中的至少一者：第一反射元件，所述第一反射元件设置成邻近于所述第二LED的第一侧以便在远离所述衬底的方向上反射光；或者第二反射元件，所述第二反射元件设置成邻近于第二侧以便在朝向所述衬底的方向上反射光。
D：根据段落A-C中的任一者的设备，所述设备还包括漫射器，所述漫射器与所述LED对准以便将所述LED嵌套在所述漫射器内，所述漫射器的材料包括硅胶、聚碳酸酯(PC)或者聚对苯二甲酸乙二醇酯(PET)中的至少一者。
E：根据段落A-D中的任一者的设备，所述设备还包括漫射器，所述漫射器由可模制聚合物膜形成，所述漫射器设置成邻近于所述衬底与所述LED嵌套。
F：根据段落A-E中的任一者的设备，所述设备还包括导电迹线，所述导电迹线设置在所述衬底上并且连接到所述LED的所述导电衬垫。
G：根据段落A-F中的任一者的设备，其中所述衬底是印刷电路板(PCB)。
H：根据段落A-G中的任一者的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者至少部分跨越所述LED的宽度延伸。
I：根据段落A-H中的任一者的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者跨越所述LED的整个宽度延伸。
J：根据段落A-I中的任一者的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者形成为所述LED的电流扩散层。
K：根据段落A-J中的任一者的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者的材料是以下各者中的一者：铝、银、TiO2、SiO2、HfO2、Ta2O5，或者白色漫射性基于聚合物的反射材料。
L：一种设备包括：漫射器衬底；以及LED阵列，所述LED阵列嵌套在所述漫射器衬底内，每个LED在所述LED的第一侧上包括导电衬垫，并且每个LED包括：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光；以及第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光。
M：根据段落L的设备，所述设备还包括附接到所述LED的电路衬底。
N：根据段落L-M中的任一者的设备，其中所述漫射器衬底包括纹理特征。
O：根据段落L-N中的任一者的设备，其中所述漫射器衬底的表面包括在所述LED阵列的至少一个LED周围沿圆周延伸的纹理特征。
P：根据段落L-O中的任一者的设备，其中特定纹理特征的最大尺寸的大小取决于所述至少一个LED与所述特定纹理特征之间的径向距离。
Q：根据段落L-P中的任一者的设备，其中与所述至少一个LED相距第一径向距离而设置的第一特定纹理特征的最大尺寸小于与所述至少一个LED相距第二径向距离而设置的第二特定纹理特征的最大尺寸，所述第一径向距离短于所述第二径向距离。
R：根据段落L-Q中的任一者的设备，其中所述漫射器衬底的表面包括在所述LED阵列的每个LED周围沿圆周延伸的纹理特征，并且其中每个纹理特征的大小取决于距一个或多个LED的径向距离。
S：根据段落L-R中的任一者的设备，其中在两个相邻LED之间的距离上的一半处设置的特定纹理特征的深度和/或宽度大于在不足是所述两个相邻LED之间的一半的距离而定位的纹理特征的对应的深度和/或宽度。
T：一种设备包括：电路衬底；显示面板，所述显示面板基本上平行于所述电路衬底而设置；漫射器衬底，所述漫射器衬底设置在所述电路衬底与所述显示面板之间；以及呈列和行的LED阵列，所述LED阵列跨越所述漫射器衬底的平面而嵌套并且附接到所述电路衬底，每个LED经由所述LED的第一侧上的导电衬垫进行附接，每个LED包括以下各者中的至少一者：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光；或者第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，其中所述漫射器衬底包括在所述LED阵列的一个或多个LED周围沿圆周延伸的纹理特征。
U：一种设备包括：漫射器衬底，所述漫射器衬底具有范围从约12微米到约100微米的平均厚度；以及光源，所述光源嵌套在所述漫射器衬底中，所述光源包括导电衬垫，所述光源被配置成经由所述导电衬垫被供电并且照射所述漫射器衬底。
V：一种显示设备包括：衬底；多个LED，每个LED具有第一侧和第二侧，每个LED经由所述LED的所述第一侧上的导电衬垫而附接到所述衬底，并且每个LED包括：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧，以便在远离所述衬底的方向上反射光；以及第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的所述第二侧，所述第二反射元件设置成主要在朝向所述衬底的方向上反射光；以及漫射器，所述漫射器具有相对于所述衬底的表面与所述多个LED对准的光漫射特性，所述漫射器被对准成嵌套在所述多个LED的至少一个LED周围。
W：根据段落V的显示设备，其中所述多个LED包括在所述衬底上彼此间隔开的第一LED和第二LED，并且其中在所述第一LED与所述第二LED之间的所述衬底的一部分包括反射表面以便在远离所述衬底的方向上反射光。
X：根据段落V-W中的任一者的显示设备，其中所述多个LED包括在所述衬底上彼此间隔开的第一LED和第二LED。
Y：根据段落V-X中的任一者的显示设备，其中所述漫射器的材料包括硅胶、聚碳酸酯(PC)或者聚对苯二甲酸乙二醇酯(PET)中的至少一者。
Z：根据段落V-Y中的任一者的显示器，其中所述漫射器是由可模制聚合物膜形成。
AA：根据段落V-Z中的任一者的显示设备，所述显示设备还包括导电迹线，所述导电迹线设置在所述衬底上并且连接到所述多个LED中的每个LED的所述导电衬垫。
AB：根据段落V-AA中的任一者的显示设备，其中所述衬底是印刷电路板(PCB)。
AC：根据段落V-AB中的任一者的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者至少部分跨越所述多个LED中的至少一者的宽度延伸。
AD：根据段落V-AC中的任一者的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者跨越所述多个LED中的至少一个LED的整个宽度延伸。
AE：根据段落V-AD中的任一者的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者形成为电流扩散层。
AF：根据段落V-AE中的任一者的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者的材料是以下各者中的一者：铝、银、TiO2、SiO2、HfO2、Ta2O5，或者白色漫射性基于聚合物的反射材料。
AG：根据段落V-AF中的任一者的设备，其中所述多个LED中的至少一者具有小于50微米的厚度。
AH：根据段落V-AG中的任一者的设备，其中所述衬底、所述多个LED中的至少一者以及所述漫射器具有小于170微米的组合厚度。
AI：根据段落V-AH中的任一者的设备，其中所述漫射器的厚度尺寸分别与所述多个LED的高度尺寸大致相同。
AJ：根据段落V-AI中的任一者的设备，其中所述漫射器具有第一侧和第二侧，所述漫射器的所述第一侧包括反射表面以在远离所述衬底的方向上反射光。
AK：一种设备包括：漫射器衬底；以及LED阵列，所述LED阵列与所述漫射器衬底对准以便嵌套在所述漫射器衬底内，每个LED在所述LED的第一侧上包括导电衬垫，并且每个LED包括：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光；以及第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，其中所述漫射器衬底的厚度尺寸不大于所述LED阵列的高度。
AL：根据段落AK的设备，所述设备还包括附接到所述LED的电路衬底。
AM：根据段落AK-AL中的任一者的设备，其中所述漫射器衬底包括纹理特征。
AN：根据段落AK-AM中的任一者的设备，其中所述漫射器衬底的表面包括在所述LED阵列的至少一个LED周围沿圆周延伸的纹理特征。
AO：根据段落AK-AN中的任一者的设备，其中特定纹理特征的最大尺寸的大小取决于所述至少一个LED与所述特定纹理特征之间的径向距离。
AP：根据段落AK-AO中的任一者的设备，其中与所述至少一个LED相距第一径向距离而设置的第一特定纹理特征的最大尺寸小于与所述至少一个LED相距第二径向距离而设置的第二特定纹理特征的最大尺寸，所述第一径向距离短于所述第二径向距离。
AQ：根据段落AK-AP中的任一者的设备，其中所述漫射器衬底的表面包括在所述LED阵列的每个LED周围沿圆周延伸的纹理特征，并且其中每个纹理特征的大小取决于距一个或多个LED的径向距离。
AR：根据段落AK-AQ中的任一者的设备，其中在两个相邻LED之间的距离上的一半处设置的特定纹理特征的深度和/或宽度大于在不足是所述两个相邻LED之间的一半的距离而定位的纹理特征的对应的深度和/或宽度。
AS：一种设备包括：电路衬底；显示面板，所述显示面板基本上平行于所述电路衬底而设置；漫射器衬底，所述漫射器衬底设置在所述电路衬底与所述显示面板之间；以及呈列和行的LED阵列，所述LED阵列跨越所述漫射器衬底的平面而嵌套以便与所述漫射器衬底对准并且附接到所述电路衬底，每个LED经由所述LED的第一侧上的导电衬垫进行附接，并且每个LED包括以下各者中的至少一者：第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光；或者第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，其中所述漫射器衬底包括在所述LED阵列的一个或多个LED周围沿圆周延伸的纹理特征。
结论
尽管已经用结构特征和/或方法动作特有的语言描述了若干实施方案，但应理解，权利要求不一定受限于所描述的特定特征或动作。而是，将特定特征和动作公开为实施所要求保护的主题的说明形式。

Claims (45)

1.一种设备，所述设备包括：
衬底；以及
LED，所述LED经由所述LED的第一侧上的导电衬垫而附接到所述衬底，所述LED包括：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧，以便在远离所述衬底的方向上反射光；以及
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成主要在朝向所述衬底的方向上反射光。
2.根据权利要求1所述的设备，其中所述LED是第一LED，并且
其中所述设备还包括第二LED，所述第二LED设置在所述衬底上并且与所述第一LED间隔开，并且
其中在所述第一LED与所述第二LED之间的所述衬底的一部分包括反射表面，所述反射表面设置成在远离所述衬底的方向上反射光。
3.根据权利要求1所述的设备，其中所述LED是第一LED，并且
其中所述设备还包括第二LED，所述第二LED设置在所述衬底上并且与所述第一LED间隔开，并且
其中所述第二LED包括以下各者中的至少一者：第一反射元件，所述第一反射元件设置成邻近于所述第二LED的第一侧以便在远离所述衬底的方向上反射光；或者第二反射元件，所述第二反射元件设置成邻近于第二侧以便在朝向所述衬底的方向上反射光。
4.根据权利要求1所述的设备，所述设备还包括漫射器，所述漫射器与所述LED对准以便将所述LED嵌套在所述漫射器内，所述漫射器的材料包括硅胶、聚碳酸酯(PC)或者聚对苯二甲酸乙二醇酯(PET)中的至少一者。
5.根据权利要求1所述的设备，所述设备还包括漫射器，所述漫射器由可模制聚合物膜形成，所述漫射器设置成邻近于所述衬底与所述LED嵌套。
6.根据权利要求1所述的设备，所述设备还包括导电迹线，所述导电迹线设置在所述衬底上并且连接到所述LED的所述导电衬垫。
7.根据权利要求1所述的设备，其中所述衬底是印刷电路板(PCB)。
8.根据权利要求1所述的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者至少部分跨越所述LED的宽度延伸。
9.根据权利要求1所述的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者跨越所述LED的整个宽度延伸。
10.根据权利要求1所述的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者形成为所述LED的电流扩散层。
11.根据权利要求1所述的设备，其中所述第一反射元件或者所述第二反射元件中的至少一者的材料是以下各者中的一者：铝、银、TiO2、SiO2、HfO2、Ta2O5，或者白色漫射性基于聚合物的反射材料。
12.一种设备，所述设备包括：
漫射器衬底；以及
LED阵列，所述LED阵列嵌套在所述漫射器衬底内，每个LED在所述LED的第一侧上包括导电衬垫，并且每个LED包括：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光；以及
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光。
13.根据权利要求12所述的设备，所述设备还包括附接到所述LED的电路衬底。
14.根据权利要求13所述的设备，其中所述漫射器衬底包括纹理特征。
15.根据权利要求12所述的设备，其中所述漫射器衬底的表面包括在所述LED阵列的至少一个LED周围沿圆周延伸的纹理特征。
16.根据权利要求所述15的设备，其中特定纹理特征的最大尺寸的大小取决于在所述至少一个LED与所述特定纹理特征之间的径向距离。
17.根据权利要求所述15的设备，其中与所述至少一个LED相距第一径向距离而设置的第一特定纹理特征的最大尺寸小于与所述至少一个LED相距第二径向距离而设置的第二特定纹理特征的最大尺寸，所述第一径向距离短于所述第二径向距离。
18.根据权利要求12所述的设备，其中所述漫射器衬底的表面包括在所述LED阵列的每个LED周围沿圆周延伸的纹理特征，并且
其中每个纹理特征的大小取决于距一个或多个LED的径向距离。
19.根据权利要求18所述的设备，其中在两个相邻LED之间的距离的一半处设置的特定纹理特征的深度和/或宽度大于在不及所述两个相邻LED之间的一半的距离处定位的纹理特征的对应的深度和/或宽度。
20.一种设备，所述设备包括：
电路衬底；
显示面板，所述显示面板基本上平行于所述电路衬底而设置；
漫射器衬底，所述漫射器衬底设置在所述电路衬底与所述显示面板之间；以及
呈列和行的LED阵列，所述LED阵列跨越所述漫射器衬底的平面而嵌套并且附接到所述电路衬底，每个LED经由所述LED的第一侧上的导电衬垫进行附接，每个LED包括以下各者中的至少一者：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光，或者
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，
其中所述漫射器衬底包括在所述LED阵列的一个或多个LED周围沿圆周延伸的纹理特征。
21.一种设备，所述设备包括：
漫射器衬底，所述漫射器衬底具有范围从约12微米到约100微米的平均厚度；以及
光源，所述光源嵌套在所述漫射器衬底中，所述光源包括导电衬垫，所述光源被配置成经由所述导电衬垫被供电并且照射所述漫射器衬底。
22.一种显示设备，所述显示设备包括：
衬底；
多个LED，每个LED具有第一侧和第二侧，每个LED经由所述LED的所述第一侧上的导电衬垫而附接到所述衬底，并且每个LED包括：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧，以便在远离所述衬底的方向上反射光，以及
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的所述第二侧，所述第二反射元件设置成主要在朝向所述衬底的方向上反射光；以及
漫射器，所述漫射器具有相对于所述衬底的表面与所述多个LED对准的光漫射特性，所述漫射器被对准成嵌套在所述多个LED中的至少一个LED周围。
23.根据权利要求22所述的显示设备，其中所述多个LED包括在所述衬底上彼此间隔开的第一LED和第二LED，并且
其中在所述第一LED与所述第二LED之间的所述衬底的一部分包括反射表面，以便在远离所述衬底的方向上反射光。
24.根据权利要求22所述的显示设备，其中所述多个LED包括在所述衬底上彼此间隔开的第一LED和第二LED。
25.根据权利要求22所述的显示设备，其中所述漫射器的材料包括硅胶、聚碳酸酯(PC)或者聚对苯二甲酸乙二醇酯(PET)中的至少一者。
26.根据权利要求22所述的显示器，其中所述漫射器是由可模制聚合物膜形成。
27.根据权利要求22所述的显示设备，所述显示设备还包括导电迹线，所述导电迹线设置在所述衬底上并且连接到所述多个LED中的每个LED的所述导电衬垫。
28.根据权利要求22所述的显示设备，其中所述衬底是印刷电路板(PCB)。
29.根据权利要求22所述的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者至少部分跨越所述多个LED中的至少一者的宽度延伸。
30.根据权利要求22所述的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者跨越所述多个LED中的至少一个LED的整个宽度延伸。
31.根据权利要求22所述的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者形成为电流扩散层。
32.根据权利要求22所述的显示设备，其中所述第一反射元件或者所述第二反射元件中的至少一者的材料是以下各者中的一者：铝、银、TiO2、SiO2、HfO2、Ta2O5，或者白色漫射性基于聚合物的反射材料。
33.根据权利要求22所述的设备，其中所述多个LED中的至少一者具有小于50微米的厚度。
34.根据权利要求22所述的设备，其中所述衬底、所述多个LED中的至少一者以及所述漫射器具有小于170微米的组合厚度。
35.根据权利要求22所述的设备，其中所述漫射器的厚度尺寸分别与所述多个LED的高度尺寸大致相同。
36.根据权利要求22所述的设备，其中所述漫射器具有第一侧和第二侧，所述漫射器的所述第一侧包括反射表面以在远离所述衬底的方向上反射光。
37.一种设备，所述设备包括：
漫射器衬底；以及
LED阵列，所述LED阵列与所述漫射器衬底对准以便嵌套在所述漫射器衬底内，每个LED在所述LED的第一侧上包括导电衬垫，并且每个LED包括：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光，以及
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，
其中所述漫射器衬底的厚度尺寸不大于所述LED阵列的高度。
38.根据权利要求37所述的设备，所述设备还包括附接到所述LED的电路衬底。
39.根据权利要求38所述的设备，其中所述漫射器衬底包括纹理特征。
40.根据权利要求37所述的设备，其中所述漫射器衬底的表面包括在所述LED阵列的至少一个LED周围沿圆周延伸的纹理特征。
41.根据权利要求40所述的设备，其中特定纹理特征的最大尺寸的大小取决于在所述至少一个LED与所述特定纹理特征之间的径向距离。
42.根据权利要求40所述的设备，其中与所述至少一个LED相距第一径向距离而设置的第一特定纹理特征的最大尺寸小于与所述至少一个LED相距第二径向距离而设置的第二特定纹理特征的最大尺寸，所述第一径向距离短于所述第二径向距离。
43.根据权利要求37所述的设备，其中所述漫射器衬底的表面包括在所述LED阵列的每个LED周围沿圆周延伸的纹理特征，并且
其中每个纹理特征的大小取决于距一个或多个LED的径向距离。
44.根据权利要求43所述的设备，其中在两个相邻LED之间的距离的一半处设置的特定纹理特征的深度和/或宽度大于在不及所述两个相邻LED之间的一半的距离处定位的纹理特征的对应的深度和/或宽度。
45.一种设备，所述设备包括：
电路衬底；
显示面板，所述显示面板基本上平行于所述电路衬底而设置；
漫射器衬底，所述漫射器衬底设置在所述电路衬底与所述显示面板之间；以及
呈列和行的LED阵列，所述LED阵列跨越所述漫射器衬底的平面而嵌套以便与所述漫射器衬底对准并且附接到所述电路衬底，每个LED经由所述LED的第一侧上的导电衬垫进行附接，并且每个LED包括以下各者中的至少一者：
第一反射元件，所述第一反射元件设置成邻近于所述LED的所述第一侧以便在横向于所述漫射器衬底的平面的第一方向上反射光，或者
第二反射元件，所述第二反射元件设置成邻近于所述LED的与所述LED的所述第一侧相对的第二侧，所述第二反射元件设置成在横向于所述漫射器衬底的平面并且与所述第一方向相对的第二方向上反射光，
其中所述漫射器衬底包括在所述LED阵列的一个或多个LED周围沿圆周延伸的纹理特征。
CN201780027031.8A 2015-03-20 2017-03-17 用于光漫射的方法和设备 Pending CN109154743A (zh)

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