CN104595804B - 一种背光模组和一种显示装置 - Google Patents
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- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/1336—Illuminating devices
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Abstract
本发明公开了一种背光模组和一种显示装置,其中,所述背光模组包括:所述蓝色发光二极管,导光板;所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;所述导光板的底面外侧均匀分布有RG油墨网点;所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出。本发明的技术方案通过蓝色发光二极管发射的蓝光与所述导光板底面设置的RG油墨混合反射出高色域的白光,从而使得实现高色域白光的设计成本降低,且由于蓝色发光二极管中不含有荧光粉,所以发光效率较高且不会使得显示画面出现发黄的现象。
Description
技术领域
本发明涉及屏幕显示技术领域,特别涉及一种背光模组和一种显示装置。
背景技术
随着显示设备对色域,亮度要求不断的提高,现有技术中通过白色发光二极管(Light-Emitting Diode,简称LED)配合三原色(Red,Green,Blue,简称RGB)光阻来实现显示设备的高色域要求越来越受限制。目前,实现高色域的方式主要采用蓝光芯片加RG荧光粉或者蓝光LED加量子点技术。
在实际背光模组设计的过程中,发明人发现现有技术中至少存在如下问题:
现有蓝光芯片加RG荧光粉实现高色域的技术方案设计成本较高,且使用一段时间后显示画面容易发黄,而且RG荧光粉会吸收一部分光线,使LED光效降低。
发明内容
鉴于上述问题,提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的,本发明的技术方案是这样实现的:
一方面,本发明提供了一种背光模组,包括:蓝色发光二极管,导光板;
所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;
所述导光板的底面外侧均匀分布有RG油墨网点;
所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出。
优选地,所述RG油墨网点均匀排布与所述导光板的底面,且所述RG油墨网点的直径随着其与所述蓝色发光二极管的距离越远所述RG油墨网点的直径越大。
优选地,所述蓝色发光二极管发出的蓝光通过所述导光板的入光面后在所述导光板内进行全反射传输。
优选地,当所述蓝色发光二极管发射的蓝光入射到所述导光板内与所述RG油墨混合接触,漫反射出白光。
优选地,所述蓝色发光二极管的发光面与所述导光板的入光面相对设置,且所述蓝色发光二极管的蓝色发光晶片中轴线与所述导光板的中轴线在同一水平位置。
另一方面,本发明提供了一种显示装置,包括:背光模组;该背光模组包括:蓝色发光二极管,导光板;
所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;
所述导光板的底面外侧均匀分布有RG油墨网点;
所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出。
优选地,所述RG油墨网点均匀排布与所述导光板的底面,且所述RG油墨网点的直径随着其与所述蓝色发光二极管的距离越远所述RG油墨网点的直径越大。
优选地,所述蓝色发光二极管发出的蓝光通过所述导光板的入光面后在所述导光板内进行全反射传输。
优选地,当所述蓝色发光二极管发射的蓝光入射到所述导光板内与所述RG油墨混合接触,漫反射出白光。
优选地,所述蓝色发光二极管的发光面与所述导光板的入光面相对设置,且所述蓝色发光二极管的蓝色发光晶片中轴线与所述导光板的中轴线在同一水平位置。
本发明的技术方案通过蓝色发光二极管发射的蓝光与所述导光板底面设置的RG油墨混合反射出高色域的白光,从而使得实现高色域白光的设计成本降低,且由于蓝色发光二极管中不含有荧光粉,一般在LED中使用荧光粉技术,荧光粉随着时间会出现老化,继而出现黄化现象,综上,蓝光LED发光效率较高且不会使得显示画面出现发黄的现象。
附图说明
图1为本发明实施例提供的一种背光模组结构示意图;
图2为本发明实施例提供的一种显示装置的结构示意图。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明实施方式作进一步地详细描述。
如图1为所示为本发明实施例提供的一种背光模组;该背光模组包括:蓝色发光二极管101,导光板102;所述导光板(Light Guide Plate,简称LGP)。
所述导光板102包括:一底面104;一与所述底面相对的出光面105;以及连接底面104和出光面105的入光面103;
所述导光板的底面104外侧均匀分布有RG油墨网点106;
所述蓝色发光二极管101发出的光线通过所述入光面103与所述RG油墨网点106中的RG油墨混合作用生成白光,所述白光通过所述导光板102的出光面105射出。
需要说明的是,所述RG油墨网点106均匀排布与所述导光板102的底面104,且所述RG油墨网点106的直径随着其与所述蓝色发光二极管101的距离越远所述RG油墨网点106的直径越大。具体的讲,所述RG油墨网点直径大小变化是由所述RG油墨网点的密度决定的,所述RG油墨网点的密度是指单位面积内RG油墨网点面积与单位面积的比值。由于光源发出的光线是一定的,距离光源近的网点虽然小,但网点上漫反射的光线多,表面可射出的光线为A。距离光源远的网点虽然大,但网点上漫反射的光线变少了,也就是说一部分光线已经被距离光源近的网点反射到出表面,这样距离光源远的网点表面可射出的光线为B。所述网点直径大小的设计最终实现的目标为A=B。
优选地,所述蓝色发光二极管101发出的蓝光通过所述导光板102的入光面103后在所述导光板内进行全反射传输。
还需要说明的是,当所述蓝色发光二极管101发射的蓝光入射到所述导光板102内与所述RG油墨混合接触,漫反射出白光。
还需要说明的是,所述蓝色发光二极管101的发光面与所述导光板102的入光面103相对设置,且所述蓝色发光二极管101晶片的中轴线与所述导光板102的中轴线在同一水平位置。
本发明所述的RG油墨为红油墨和绿油墨一定比例的混合物。
本发明所采用的蓝色发光二极管发出的蓝光进入导光板内进行全反射传输,当所述蓝光光线在所述导光板中遇到RG油墨网点中的RG油墨时漫反射出的光线为高色域白光;具体的讲就是蓝光与RG油墨混合作用后发出高色域白光。所述蓝光与RG油墨混合作用后发出高色域白光通过所述导光板的出光面透射出形成显示装置的背光源,从而实现显示装置的高色域。此外,由于本发明中的蓝光LED封装表面没有荧光粉,而传统LED封装表面有荧光粉;同样条件下,蓝色LED激发出的光线全部射出,而传统LED激发出的光线需透射过荧光粉才能射出,荧光粉会吸收一部分光线,所以本发明蓝色LED代替传统LED会给背光带来一定的亮度提升;且由于所述蓝色LED中没有荧光粉,所以不会使得显示画面出现发黄的现象。
如图2所示,为本发明实施例提供的一种显示装置;该装置,包括:背光模组;该背光模组包括:蓝色发光二极管,导光板;
所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;
所述导光板的底面外侧均匀分布有RG油墨网点;
所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出。
需要说明的是,所述RG油墨网点均匀排布与所述导光板的底面,且所述RG油墨网点的直径随着其与所述蓝色发光二极管的距离越远所述RG油墨网点的直径越大。
还需要说明的是,所述蓝色发光二极管发出的蓝光通过所述导光板的入光面后在所述导光板内进行全反射传输。
还需要说明的是,当所述蓝色发光二极管发射的蓝光入射到所述导光板内与所述RG油墨混合接触,漫反射出白光。
还需要说明的是,所述蓝色发光二极管的发光面与所述导光板的入光面相对设置,且所述蓝色发光二极管的蓝色发光晶片的中轴线与所述导光板的中轴线在同一水平位置。
以上所述全反射条件为:①光从光密介质射到它与光疏介质的界面上;②入射角等于或大于临界角。
以上所述高色域指的是可有效提升色彩的鲜艳度和真实感,让电视画面明亮鲜活,栩栩如生,同时提供更多色彩表现,还原真实视界。
本发明所述的RG油墨为红油墨和绿油墨一定比例的混合物。
本发明所采用的蓝色发光二极管发出的蓝光进入导光板内进行全反射传输,当所述蓝光光线在所述导光板中遇到RG油墨网点中的RG油墨时漫反射出的光线为高色域白光;具体的讲就是蓝光与RG油墨混合作用后发出高色域白光。所述蓝光与RG油墨混合作用后发出高色域白光通过所述导光板的出光面透射出形成显示装置的背光源,从而实现显示装置的高色域。此外,由于本发明中的蓝光LED封装表面没有荧光粉,而传统LED封装表面有荧光粉;同样条件下,蓝色LED激发出的光线全部射出,而传统LED激发出的光线需透射过荧光粉才能射出,荧光粉会吸收一部分光线,所以本发明蓝色LED代替传统LED会给背光带来一定的亮度提升;且由于所述蓝色LED中没有荧光粉,所以不会使得显示画面出现发黄的现象。
以上所述仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等,均包含在本发明的保护范围内。
Claims (2)
1.一种背光模组,其特征在于,包括:蓝色发光二极管,导光板;
所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;
所述导光板的底面外侧均匀分布有RG油墨网点;
所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出;
其中,所述的RG油墨为红油墨和绿油墨的混合物;
所述蓝色发光二极管的发光面与所述导光板的入光面相对设置,且所述蓝色发光二极管的蓝色发光晶片的中轴线与所述导光板的中轴线在同一水平位置;
所述RG油墨网点均匀排布于所述导光板的底面,且所述RG油墨网点的直径随着其与所述蓝色发光二极管的距离越远所述RG油墨网点的直径越大,使远近不同的所述网点射出的光线数量相同;
所述蓝色发光二极管发出的蓝光通过所述导光板的入光面后在所述导光板内进行全反射传输;当所述蓝色发光二极管发射的蓝光入射到所述导光板内与所述RG油墨混合接触,漫反射出白光。
2.一种显示装置,其特征在于,包括:背光模组;该背光模组包括:蓝色发光二极管,导光板;
所述导光板包括:一底面;一与所述底面相对的出光面;以及连接底面和出光面的入光面;
所述导光板的底面外侧均匀分布有RG油墨网点;
所述蓝色发光二极管发出的光线通过所述入光面与所述RG油墨网点中的RG油墨混合作用生成白光,所述白光通过所述导光板的出光面射出;
其中,所述的RG油墨为红油墨和绿油墨的混合物;
所述蓝色发光二极管的发光面与所述导光板的入光面相对设置,且所述蓝色发光二极管的蓝色发光晶片的中轴线与所述导光板的中轴线在同一水平位置;
所述RG油墨网点均匀排布于所述导光板的底面,且所述RG油墨网点的直径随着其与所述蓝色发光二极管的距离越远所述RG油墨网点的直径越大,使远近不同的所述网点射出的光线数量相同;
所述蓝色发光二极管发出的蓝光通过所述导光板的入光面后在所述导光板内进行全反射传输;当所述蓝色发光二极管发射的蓝光入射到所述导光板内与所述RG油墨混合接触,漫反射出白光。
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