CN107703674A - 一种用于背光模组的光学膜、背光模组及显示设备 - Google Patents
一种用于背光模组的光学膜、背光模组及显示设备 Download PDFInfo
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Abstract
本发明公开了一种用于背光模组的光学膜、背光模组及显示设备,涉及液晶面板显示技术领域。所述背光模组包括:光源,发出至少第一种光线;光学膜,包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度大于120度。通过上述方式,本发明能够使背光模组的出光角度大于120度,进而使具有该背光模组的显示设备达到广视角效果。
Description
技术领域
本发明涉及液晶面板显示技术领域,特别是涉及一种用于背光模组的光学膜、背光模组及显示设备。
背景技术
液晶显示器(Liquid Crystal Display,LCD)具有轻薄、功耗低、无辐射等特点,现已占据了平面显示领域的主导地位,目前液晶显示器被广泛应用于高清数字电视、台式电脑、平板电脑、笔记本电脑、手机、数码相机等电子设备中。
本申请的发明人在长期的研发中发现现有技术中当背光源通过偏光片、TFT等之后,输出的光线便具有了方向性,其中大多数光是从屏幕中垂直射出来的;即在液晶显示器的不同位置看画面会有不同的色彩,特别是当从一较大角度来观看LCD时,便不能看到画面原本的颜色,甚至只能看到全白或全黑,也就是常说的视角不足的问题。随着LCD尺寸越来越大,从侧面观看显示屏的概率越来越大,因此亟待需要研发具有广视角的显示设备。
发明内容
本发明主要解决的技术问题是提供一种用于背光模组的光学膜、背光模组及显示设备,能够使显示设备具有较大的视角,达到更好的显示效果。
为解决上述技术问题,本发明采用的一个技术方案是:提供一种背光模组,该背光模组包括:光源,发出至少第一种光线;光学膜,包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度所匹配的广视角大于120度。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种显示设备,该显示设备包括上述背光模组。
为解决上述技术问题,本发明采用的另一个技术方案是:提供一种用于背光模组的光学膜,该光学膜包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度大于120度。
本发明的有益效果是:区别于现有技术的情况,本发明提供一种背光模组,该背光模组包括一种光学膜,该光学膜包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度大于120度,进而使具有该背光模组的显示设备达到广视角效果。
附图说明
图1是本发明背光模组一实施方式的结构示意图;
图2是本发明背光模组与普通背光模组的亮度视角的对比图;
图3是本发明背光模组另一实施方式的结构示意图;
图4是本发明背光模组又一实施方式的结构示意图;
图5是本发明背光模组又一实施方式中各光线方向的示意图;
图6是本发明用于背光模组的光学膜一实施方式的结构示意图;
图7是本发明显示设备一实施方式的结构示意图。
具体实施方式
为使本发明的目的、技术方案及效果更加清楚、明确,以下参照附图并举实施例对本发明进一步详细说明。
请参阅图1,图1是本发明背光模组一实施方式的结构示意图。本发明提供一种背光模组用于为显示设备提供背光光源。该背光模组包括:光源101和光学膜102。
光源101是点光源、线光源或面光源,能够发出至少第一种光线;光源101可以是发光二极管(Light Emitting Diode,LED)灯,该LED灯可以发出多种颜色光线,例如紫外光或蓝光。在其他实施方式中,背光光源也可以是其他可发光芯片等。
请参阅图2,图2是本发明背光模组与普通背光模组的亮度视角的对比图。光学膜102包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度所匹配的广视角大于120度。例如120度、150度、170度等,能够满足广视角显示要求,进而能够使显示设备达到广视角效果。
其中,光转换材料在光转换膜中的浓度为0.2%~25%,其中,该浓度可以是质量含量也可以是体积含量,具体可根据光转换材料的材质、密度、粒径大小,基体材料的材质种类等进行调配,其他实施方式中的浓度同样也可以是质量含量或体积含量。随着光转换材料的浓度增加,背光模组的色温将降低,因此,为了降低背光模组的色温,可以适当增大光转换材料的浓度,例如:0.2%、1%、6%、13%、25%等,使得背光模组的色温降到16000以下,例如14000、11000、9000、7000等。
可选地,在一实施方式中,本申请所提供的背光模组在具有大视角,低色温的同时,其对比度还大于1500:1,例如1500:1、3000:1、5000:1等。
其中,可选地,第一种光线是紫外光或蓝光,第二种光线是黄光,或绿光和红光的混合光,或蓝光、绿光和红光的混合光。
其中,光转换材料将第一种光线转换为相同或不同波长的第二种光线出射。具体地,当第一种光线为蓝光时,光转换材料接收蓝光激发发出由不同波长的绿光和红光混合组成的第二种光线,或者光转换材料接收蓝光激发发出具有同一波长的黄光作为第二种光线;当第一种光线为紫光时,光转换材料接收紫光激发发出由不同波长的蓝光、绿光和红光混合组成的第二种光线。
可选地,在一实施方式中,光学膜102包括光转换材料层,光转换材料层的膜厚度为70~135微米,例如:75微米、95微米、115微米、135微米,膜层太厚会增加光的消耗和损失,膜层太薄光转换率会降低。同时,随着膜厚度的增加,背光模组的色温将降低,因此,为了降低背光模组的色温,可以适当增加光转换材料层的厚度。
可选地,在一实施方式中,光转换材料包含量子点材料和/或荧光材料。量子点(Quantum Dot,QD)是指三维尺寸均在纳米量级的颗粒材料,量子点在收到光照射时可以进入激发态,并在由激发态回落为基态时发出特定波长(即特定颜色)的光,QD的发光光谱主要由QD的粒径大小来控制,因此可以通过改变QD的粒径来实现发光光谱的调节;同时,QD转换效率很高,可以提高光的利用率,QD的发射光谱半波宽很窄,温度稳定性好。量子点的材质可以是Ⅱ-Ⅵ族量子点材料,Ⅰ-Ⅲ-Ⅵ族量子点材料,还可以是不同量子点材料的混合物;具体地,量子点材料可以是ZnCdSe2,CdSe,CdTe,CuInS2,ZnCuInS3中的一种或多种。量子点的尺寸大小、材质、荧光材料的种类等可以根据实际需要选择性调配。
可选地,在一实施方式中,量子点材料与荧光材料的比例为1:100~1:5,例如1:100、1:70、1:40、1:20、1:5等,量子点材料的光转换效率比普通荧光材料高,但量子点材料的价格比普通荧光材料贵,如果整片光转换膜全部选用量子点材料,会使得制备成本升高,且在光转换效率达到一定值后,即使再增加量子点材料的量,对最终显示效果影响并不大,造成资源的浪费;因此,该实施方式中,选用量子点材料与荧光材料的组合,既能保证光转换效率,还节约成本。
可选地,在一实施方式中,量子点材料的粒径为1~20纳米,例如:1nm、5nm、8nm、15nm、20nm等;量子点材料包括蓝光量子点材料、绿光量子点材料、红光量子点材料,其中,当使用紫外光源等非蓝光光源时,蓝光量子点材料在量子点材料中的浓度为40%~65%,例如:40%、45%、50%、55%、65%等;绿光量子点材料在量子点材料中的浓度为15%~45%;例如:15%、25%、35%、40%、45%等;红光量子点材料在量子点材料中的浓度为12%~28%;例如:12%、15%、18%、22%、28%等;绿光量子点材料与红光量子点材料的比例为3:1~1.2:1;例如3:1、2.5:1、2:1、1.5:1等。当使用蓝光光源时,可以不包含蓝光量子点材料,绿光量子点材料与红光量子点材料可以根据上述比例进行调整分配。其中,量子点材料的粒径分布应当均匀,以提高光纯度,蓝光量子点材料主要用于吸收第一种光线将其转换为第二种光线,例如转换为绿光和红光,所以其含量较多;而绿光又容易被吸收转换为红光,所以为了使最后所出射的白光较均匀,绿光量子点材料的含量应当多于红光量子点材料的量,使得最后白光中三种光线的比例大约为蓝光10%~30%、绿光30%~70%、红光20%~40%。
可选地,在一实施方式中,光学膜102包括层叠的基层和功能层,基层是承载或支撑功能层的载体,其材质可以是玻璃或高分子材料;功能层是扩散膜、增亮膜、反射膜、棱镜膜中的至少一种,将光转换材料掺杂在上述膜层中的任意一种中,可以掺杂在功能层中,也可以掺杂在基层中;在另一实施方式中,光学膜102也可以不包括基层,而只有功能层。掺杂的光转换材料能够增强光的散射,这就使光学膜102在原有功能的基础上又增强了光的散射,这样在不改变原有背光模组结构的情况下即可增大背光模组的出光角度,进而使具有该背光模组的显示设备达到广视角效果。
在其他实施方式中,背光模组可以只包含上述膜层中的任意一种,也可以包含上述膜层中的两种及以上,当包含两种或两种以上膜层时,不同膜层中添加的光转换材料可以相同,也可以不同,当不同膜层中添加的光转换材料不同时可以使一种光学膜层将第一种光线转换为第二种光线出射,另一种光学膜层将第二种光线转换为第三种光线出射。具体地,当第一种光线为蓝光时,一种光学膜层接收蓝光激发发出由不同波长的绿光和红光混合组成的第二种光线,另一种光学膜层接收第二种光线中的绿光激发发出具有同一波长的红光作为第三种光线。
请参阅图3,图3是本发明背光模组另一实施方式的结构示意图。在一实施方式中,光学膜202和204包括功能层,功能层包括扩散膜、增亮膜、反射膜、棱镜膜中的至少两种,至少两种功能层通过光学胶203粘合,光转换材料分散于光学胶203中。掺杂有光转换材料的光学胶能够起到光的散射作用,同样可以在不改变原有背光模组结构的情况下增大背光模组的出光角度,进而使具有该背光模组的显示设备达到广视角效果。在另一实施方式中,上述至少两种功能层完全包裹光学胶层203。因为光转换材料一般对水汽和氧气较为敏感,在使用过程中容易失效,利用两种功能层完全包裹光学胶层,能够对光学胶层进行密封封装,起到保护光转换材料的目的,同时不需要专门设置保护层,降低成本,制作简单。
可选地,在一实施方式中,光学膜102包括反射膜层,设置于光转换材料的在光路上远离光源101的一侧,部分第一种光线通过光转换材料并出射至反射膜层上,并且部分被反射回以继续将第一种光线转换为第二种光线。通过设置反射膜层,能够在将部分光散射出去的同时还能反射一部分光回来,再次进行激发出光,提高光利用率,增强光亮度,拥有更好的显示效果。
请参阅图4和图5,图4是本发明背光模组又一实施方式的结构示意图;图5是本发明背光模组又一实施方式中各光线方向的示意图。在一实施方式中,背光模组还包括:设置于光转换材料在光路上邻近光源301一侧的第一透反膜303,透过第一种光线并反射除第一种光线外的光线;设置于光转换材料在光路上远离光源301一侧的第二透反膜304,至少部分反射第一种光线并透过除第一种光线外的光线。通过设置第一透反膜,能够选择性透过第一种光线,提高第一光线的纯度,增强激发效率;通过设置第二透反膜,能够透过除第一种光线外的光线,以形成白光提供背光光源;且同时能够部分反射第一种光线,再次激发生成第二种光线,以提高第一种光线的利用率,增强光亮度。在另一实施方式中也可以只在光转换材料在光路上远离光源的一侧设置透反膜。
以蓝光光源为例,第一透反膜303可以透过蓝光(B),并反射除蓝光以外的光线;蓝光经过光转换材料被吸收激发产生红光(R)和绿光(G),所生成的红光和绿光及部分蓝光能够透过第二透反膜304混合生成白光,用以提供背光;所生成的部分红光和绿光不能透过第一透反膜303而被反射回来,重新出射,提高光利用率;同时,部分蓝光被反射回来后重新被光转换材料吸收再次激发,增加激发次数,提高光利用率。
可选地,在另一实施方式中,背光模组也可以作为直下式光源为显示设备提供背光光源。
请参阅图6,图6是本发明用于背光模组的光学膜一实施方式的结构示意图。本发明还提供一种用于背光模组的光学膜50,光学膜50包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度大于120度。光学膜50可以是上述实施方式中光学膜中的任意一种,在此不再赘述。还可以是一种同时具有扩散、增亮、等多功能的膜层。
请参阅图7,图7是本发明显示设备一实施方式的结构示意图。本发明提供一种显示设备,该显示设备包括背光模组601和液晶显示面板602,背光模组601的结构与上述实施例中相同,在此不再赘述;液晶显示面板602的结构选用常规结构。该显示设备的背光模组具有较大的出光角度,进而使该显示设备具有较大的视角,显示效果较好。
综上,本发明提供一种背光模组,该背光模组包括一种光学膜,该光学膜包括光转换材料,光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得背光模组的出光角度大于120度,进而使具有该背光模组的显示设备达到广视角效果。
以上所述仅为本发明的实施方式,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。
Claims (11)
1.一种背光模组,其特征在于,包括:
光源,发出至少第一种光线;
光学膜,包括光转换材料,所述光转换材料接收所述第一种光线并将其转换为至少第二种光线出射,使得所述背光模组的出光角度所匹配的广视角大于120度。
2.根据权利要求1所述的背光模组,其特征在于,所述背光模组的出光角度所匹配的广视角大于130度,色温小于16000,对比度大于1500:1。
3.根据权利要求1所述的背光模组,其特征在于,
所述光学膜包括功能层,所述功能层是扩散膜、增亮膜、反射膜、棱镜膜中的至少一种。
4.根据权利要求3所述的背光模组,其特征在于,
所述功能层包括扩散膜、增亮膜、反射膜、棱镜膜中的至少两种,所述至少两种功能层通过光学胶粘合,所述光转换材料分散于所述光学胶中。
5.根据权利要求4所述的背光模组,其特征在于,所述至少两种功能层完全包裹所述光学胶。
6.根据权利要求1-5任一项所述的背光模组,其特征在于,
所述光转换材料在所述光转换膜中的浓度为0.2%~25%;所述光转换膜包括光转换材料层,所述光转换材料层的膜厚度为70~135微米。
7.根据权利要求1-5任一项所述的背光模组,其特征在于,
所述光转换材料包含量子点材料和/或荧光材料;所述量子点材料的粒径为1~20纳米;所述量子点材料与所述荧光材料的浓度比为1:100~1:5;所述量子点材料包括蓝光量子点材料、绿光量子点材料、红光量子点材料,所述蓝光量子点材料在所述量子点材料中的浓度为40%~65%;所述绿光量子点材料在所述量子点材料中的浓度为15%~45%、所述红光量子点材料在所述量子点材料中的浓度为5%~30%;所述绿光量子点材料与所述红光量子点材料的浓度比为3:1~1.5:1。
8.根据权利要求1-5任一项所述的背光模组,其特征在于,所述光学膜包括反射膜层,设置于所述光转换材料的在光路上远离所述光源的一侧,部分所述第一种光线通过所述光转换材料并出射至所述反射膜层上,并且部分被反射回以继续将所述第一种光线转换为第二种光线。
9.根据权利要求1-5任一项所述的背光模组,其特征在于,包括:
第一透反膜,设置于所述光转换材料在光路上邻近所述光源的一侧,透过所述第一种光线并反射除所述第一种光线外的光线;
第二透反膜,设置于所述至少两片光转换材料在光路上远离所述光源的一侧,至少部分反射所述第一种光线并透过除所述第一种光线外的光线。
10.一种显示设备,其特征在于,包括如权利要求1-5任一项所述的背光模组。
11.一种用于背光模组的光学膜,其特征在于,包括:光转换材料,所述光转换材料接收第一种光线并将其转换为至少第二种光线出射,使得所述背光模组的出光角度大于120度。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103228983A (zh) * | 2010-11-10 | 2013-07-31 | 纳米系统公司 | 量子点薄膜、照明器件及照明方法 |
US20160025918A1 (en) * | 2011-05-24 | 2016-01-28 | Lg Innotek Co., Ltd. | Optical member, display device including the same, method for manufacturing the same |
CN106200123A (zh) * | 2016-08-31 | 2016-12-07 | 张家港康得新光电材料有限公司 | 一种量子点膜及背光模组 |
JP2017021295A (ja) * | 2015-07-14 | 2017-01-26 | 大日本印刷株式会社 | 量子ドットシート、バックライト及び液晶表示装置 |
JP2017041571A (ja) * | 2015-08-20 | 2017-02-23 | 大日本印刷株式会社 | 光波長変換シート、これを備えるバックライト装置、および画像表示装置 |
CN106501999A (zh) * | 2016-11-11 | 2017-03-15 | 张家港海纳至精新材料科技有限公司 | 光学膜组和背光模块 |
US20170115529A1 (en) * | 2015-10-23 | 2017-04-27 | Samsung Electronics Co., Ltd. | Light source, back light unit, and display device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7791561B2 (en) * | 2005-04-01 | 2010-09-07 | Prysm, Inc. | Display systems having screens with optical fluorescent materials |
JP4898332B2 (ja) * | 2005-09-15 | 2012-03-14 | セイコーインスツル株式会社 | 表示装置 |
JP6507104B2 (ja) * | 2013-02-20 | 2019-04-24 | スリーエム イノベイティブ プロパティズ カンパニー | 吸収、反射、及びコリメーティング偏光子積層体並びにこれらを組み込むバックライト |
JP2014165116A (ja) * | 2013-02-27 | 2014-09-08 | Sony Corp | 照明装置および表示装置 |
WO2015025950A1 (ja) * | 2013-08-23 | 2015-02-26 | 富士フイルム株式会社 | 光変換部材、ならびにこれを含むバックライトユニットおよび液晶表示装置 |
US20150311385A1 (en) * | 2013-12-02 | 2015-10-29 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Luminous Source Utilizing Quantum Dot, and Its Manufacturing Method and Application |
CN105278157B (zh) * | 2014-06-27 | 2020-04-28 | 富士胶片株式会社 | 背光单元及液晶显示装置 |
CN106597753B (zh) * | 2017-02-28 | 2020-04-10 | 深圳市华星光电技术有限公司 | 一种背光模组 |
CN206848649U (zh) * | 2017-05-04 | 2018-01-05 | 深圳市华星光电技术有限公司 | 一种用于背光模组的光学膜、背光模组及显示设备 |
-
2017
- 2017-06-20 CN CN201720724034.4U patent/CN206848649U/zh active Active
- 2017-06-20 CN CN201710468738.4A patent/CN107703674A/zh active Pending
- 2017-07-18 US US15/558,188 patent/US20190004375A1/en not_active Abandoned
- 2017-07-18 WO PCT/CN2017/093257 patent/WO2018201618A1/zh active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103228983A (zh) * | 2010-11-10 | 2013-07-31 | 纳米系统公司 | 量子点薄膜、照明器件及照明方法 |
US20160025918A1 (en) * | 2011-05-24 | 2016-01-28 | Lg Innotek Co., Ltd. | Optical member, display device including the same, method for manufacturing the same |
JP2017021295A (ja) * | 2015-07-14 | 2017-01-26 | 大日本印刷株式会社 | 量子ドットシート、バックライト及び液晶表示装置 |
JP2017041571A (ja) * | 2015-08-20 | 2017-02-23 | 大日本印刷株式会社 | 光波長変換シート、これを備えるバックライト装置、および画像表示装置 |
US20170115529A1 (en) * | 2015-10-23 | 2017-04-27 | Samsung Electronics Co., Ltd. | Light source, back light unit, and display device |
CN106200123A (zh) * | 2016-08-31 | 2016-12-07 | 张家港康得新光电材料有限公司 | 一种量子点膜及背光模组 |
CN106501999A (zh) * | 2016-11-11 | 2017-03-15 | 张家港海纳至精新材料科技有限公司 | 光学膜组和背光模块 |
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