CN105116594B - 背光模组及液晶显示器 - Google Patents
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Abstract
本发明提供一种背光模组,包括光学膜片组、导光板、反射片,所述光学膜片组包括第一棱镜片,所述第一棱镜片包括显示区、两个侧壁、接合区,所述显示区与所述反射片相对设置,所述侧壁由所述显示区向下延伸而成,所述侧壁连接于所述显示区和所述接合区之间,以形成收容空间,所述导光板和所述反射片彼此层叠设置于所述收容空间中,且所述导光板位于所述反射片与所述光学膜片组之间,所述反射片位于所述导光板与所述接合区之间。通过将第一棱镜片延伸分为多个区域,第一棱镜片可弯折以固定导光板和反射片,从而省去了胶框的技术方案,解决了背光模组的整体厚度偏厚的技术问题,达到减小了所述背光模组的整体厚度,实现窄边框设计的技术效果。
Description
技术领域
本发明涉及液晶显示技术领域,尤其涉及一种背光模组及一种具有所述背光模组的液晶显示器。
背景技术
随着背光显示技术的不断发展,显示装置如液晶显示器(Liquid CrystalDisplay,LCD)作为显示部件已经广泛应用于移动电话、数码相机、个人数字助理(PersonalDigital Assistant,PDA)等电子产品中。随着电子产品的边框越来越窄及行业技术的不断进步,LCD画面显示的大尺寸及边框薄型化越来越成为市场的主流需求。
背光模组作为液晶显示器中的一个重要部件,其边框化设计也成为了一种趋势,窄边框意味着在相同尺寸的屏幕下所能看到的画面面积更大视觉效果好。现有的背光模组通常包括:导光板、设置于所述导光板周围的胶框、柔性电路板、光学膜片以及遮光胶带,所述柔性电路板通过所述遮光胶带固定于所述导光板和胶框上,所述光学膜片通过遮光胶带固定在胶框上。
这种背光模组至少存在如下问题:
由于胶框自身存在一定的厚度,这必然会增加背光模组的厚度,进而增加了液晶显示器的整体厚度,如此不能满足市场的主流需要。此外,现有的背光模组需要的元件较多,结构复杂,增加了制造成本;而且,胶框与导光板的组装过程比较复杂繁琐,组装效率较低。
发明内容
本发明的目的在于提供一种背光模组,具有背光模组厚度小、组装过程简单等优点。
本发明的另一个目的在于提供一种采用上述背光模组的液晶显示器。
为了实现上述目的,本发明实施方式提供如下技术方案:
本发明提供的背光模组,包括光学膜片组、导光板、反射片,所述光学膜片组包括第一棱镜片,所述第一棱镜片包括显示区、两个侧壁、接合区,所述显示区与所述反射片相对设置,所述侧壁由所述显示区向下延伸而成,所述侧壁连接于所述显示区和所述接合区之间,以形成收容空间,所述导光板和所述反射片彼此层叠设置于所述收容空间中,且所述导光板位于所述反射片与所述光学膜片组之间,所述反射片位于所述导光板与所述接合区之间。
其中,所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线,便于所述第一棱镜片弯折。
其中,所述第一棱镜片的侧壁内侧涂覆有反射层,所述反射层可将入射到其表面的光反射回所述导光板内。
其中,所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸,所述接合区贴附于所述反射片底部。
其中,所述接合区数量为两个,其中一个所述接合区连接至所述侧壁之一者,另一个所述接合区连接至另一个所述侧壁,所述两个接合区分别自所述两个侧壁相向延伸,所述两个接合区贴附于所述反射片底部。
其中,所述光学膜片组还包括第二棱镜片和扩散片,所述第二棱镜片位于所述第一棱镜片与所述扩散片之间,所述扩散片贴合于所述导光板。
其中,所述两个接合区的自由端连接在一起,彼此向接触。
其中,所述两个接合区的自由端彼此不接触,分别贴附在反射片底部。
其中,所述导光板的一个周向外侧表面设有入光面,其余周向外侧表面涂覆有反射层,所述反射层可将入射到其表面的光反射回所述导光板内。
本发明还提供了一种液晶显示器,包括以上所述的任意一项背光模组。
本发明实施例具有如下优点或有益效果:
在本发明实施例的背光模组中,采用将所述光学膜片组中的第一棱镜片延伸分为多个区域,使得第一棱镜片可弯折以固定导光板和反射片,从而省去了胶框的技术方案,解决了背光模组的整体厚度偏厚的技术问题,达到减小了所述背光模组的整体厚度,实现了窄边框设计的技术效果。此外,由于本发明所述背光模组的结构简单,不但降低了制造成本,而且整个背光模组的组装过程更加便捷,大大提高了组装效率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明第一个实施例的背光模组的结构简图;
图2是本发明实施例的背光模组的局部示意图;
图3是本发明第二个实施例的背光模组的结构简图;
图4是本发明第三个实施例的背光模组的结构简图
具体实施方式
下面将接合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动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。
请参阅图1,本发明实施例的背光模组100可为液晶背光模组,包括光学膜片组20、导光板3、反射片4,所述光学膜片组20包括第一棱镜片21,所述棱镜片的作用是凝聚光线、提高正视亮度,所述第一棱镜片21包括显示区211、由所述显示区211向下延伸而成两个侧壁212、接合区213,所述显示区211与所述反射片4相对设置,所述侧壁212连接于所述显示区211和所述接合区213之间,以形成收容空间,所述光学膜片组20设置于所述导光板3上,用于对从导光板3的出射的光线进行处理,使得从背光模组100出射的光线的强度较大且较为均匀,所述导光板3和所述反射片4彼此层叠设置于所述收容空间中,且所述导光板3位于所述反射片4与所述光学膜片组20之间,所述反射片4位于所述导光板3与所述接合区213之间。较佳地,所述导光板3及所述反射片4相互对齐。
通过将所述第一棱镜片21延伸分为显示区211、侧壁212、接合区213,并弯折所述第一棱镜片21用于固定导光板3和反射片4,从而省去了胶框,如此不但消除了该背光模组100组装过程存在的组装间隙,进而减小了所述背光模组100的整体厚度,实现了窄边框设计。此外,由于所述背光模组100的结构简单,不但降低了制造成本,而且整个背光模组100的组装过程更加便捷,大大提高了组装效率。
进一步的,请参阅图2,所述第一棱镜片21设有折线210,折线210设于显示区211与所述侧壁212交界处以及所述接合区213与所述侧壁212交界处,使得第一棱镜片21更加便于弯折。
进一步的,请参阅图1,所述光学膜片组20还包括第二棱镜片22及扩散片23。第一棱镜片21、第二棱镜片22及扩散片23从上至下依次重叠排列,即,所述第二棱镜片22位于所述第一棱镜片21与所述扩散片23之间,所述扩散片23贴合于所述导光板3,扩散片23用于对入射光线进行扩散来防止干涉现象。
在本发明的第一个实施例中,如图1所示,两个侧壁向中间延伸而成两个接合区213,所述两个接合区213分别与一个侧壁为一体结构,即其中一个所述接合区连接至所述其中一个侧壁,另一个所述接合区连接至另一个所述侧壁,所述两个接合区分别自所述两个侧壁相向延伸,所述两个接合区213贴附于所述反射片4底部,形成一个收容空间。本实施例中所述两个接合区213的自由端可以通过单面胶5连接在一起。本发明的第二个实施例中,如图3所示,所述两个接合区213也可以相互之间不连接,两个接合区分别通过单面胶5贴附在反射片4底面,所述单面胶5一部分贴附在反射片4底面,另一部分贴附在所述反射区213上。
显而易见的,所述接合区213还可以通过双面胶或热固胶贴附在反射片4底部。
请参阅图4,本发明的第三个实施例中,所述接合区213由其中一个2121侧壁向另一个侧壁2122延伸而成,接合区213与侧壁2121为一体结构,所述接合区213与侧壁2122通过单面胶5粘结在一起,即所述单面胶一部分贴附在侧壁2122上,另一部分贴附在所述接合区213上,依此形成一个收容空间。
可以理解的是,如图4所示,在本发明的其他实施例中,所述背光模组100还可包括光源10,该光源10设置于所述导光板3的一个周向外侧以提供背光,该光源发射的光入射到该导光板3内。较佳地,该光源可以采用直流电源供电,并且具有较长的使用寿命,亮度高等特点。本实施例中光源可以为冷阴极荧光管(CCFL,Cold Cathode Fluorescent Lamp)、热阴极荧光管、发光二极管(LED,Light Emitting Diode)及电致发光片(EL,Electroluminescence)等。具体到背光模组的光线传递路径,当光源10射出的光线射入导光板3后,一部分光直接到达导光板3的出光面31,另一部分的入射光经由反射片4进行反射后,到达导光板3的出光面31,经由出光面31出来的光线依次到达所述扩散片23、所述第二棱镜片22和第一棱镜片21,并最终入射至显示面板(图未示)。
较佳的,所述反射片4为具有高反射率的反射片,用于在一定的光源输出时提高背光模组100的正视亮度。可以理解的是,如图4所示为了较佳地减少漏光,可将所述导光板3未设置光源的周向外侧表面涂覆反射涂层6,以防止光从该导光板3的边缘区域漏出,提升显示效果。以提供背光在本发明的实施例中,所述反射片4为白反射片或银反射片,其表面涂覆有反射层,涂覆的反射层选用反射率在50%以上的反射材料,以提高反射效果。
进一步的,所述导光板3采用光学级亚克力(Polymethylmethacrylate,PMMA)/聚碳酸酯(Polycarbonate,PC)为基材,其用于将线光源转变为面光源。
较佳的,所述第一棱镜片21的侧壁内侧涂覆有反射层(图未示),所述反射层可将入射到其表面的光反射回所述导光板内,进一步提升显示效果。
较佳的,所述导光板3与所述反射片4、所述导光板3与所述光学膜片组20之间应该无缝接触,如此不仅可以减小所述背光模组100的整体厚度,还可以提高显示品质。
可以理解的是,所述液晶显示器及所述背光模组100可以应用于电子纸、电视、移动电话、数码相框、平板电脑等任何具有显示功能的产品或部件。
以上所述的实施方式,并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等,均应包含在该技术方案的保护范围之内。
Claims (10)
1.一种背光模组,包括光学膜片组、导光板、反射片,所述光学膜片组包括第一棱镜片,其特征在于,所述第一棱镜片包括显示区、两个侧壁、接合区,所述显示区与所述反射片相对设置,所述侧壁由所述显示区向下延伸而成,所述侧壁连接于所述显示区和所述接合区之间,以形成收容空间,所述导光板和所述反射片彼此层叠设置于所述收容空间中,且所述导光板位于所述反射片与所述光学膜片组之间,所述反射片位于所述导光板与所述接合区之间。
2.如权利要求1所述的背光模组,其特征在于,所述显示区与所述侧壁交界处、所述接合区与所述侧壁交界处设有折线,便于所述第一棱镜片弯折。
3.如权利要求2所述的背光模组,其特征在于,所述第一棱镜片的侧壁内侧涂覆有反射层,所述反射层可将入射到其表面的光反射回所述导光板内。
4.如权利要求1所述的背光模组,其特征在于,所述接合区与其中一个所述侧壁为一体结构并向另一个所述侧壁延伸,所述接合区贴附于所述反射片底部。
5.如权利要求1所述的背光模组,其特征在于,所述接合区数量为两个,其中一个所述接合区连接至所述侧壁之一者,另一个所述接合区连接至另一个所述侧壁,所述两个接合区分别自所述两个侧壁相向延伸,所述两个接合区贴附于所述反射片底部。
6.如权利要求5所述的背光模组,其特征在于,所述两个接合区的自由端连接在一起,彼此相接触。
7.如权利要求5所述的背光模组,其特征在于,所述两个接合区的自由端彼此隔离,分别贴附于反射片底部。
8.如权利要求1所述的背光模组,其特征在于,所述光学膜片组还包括第二棱镜片和扩散片,所述第二棱镜片位于所述第一棱镜片与所述扩散片之间,所述扩散片贴合于所述导光板。
9.如权利要求1所述的背光模组,其特征在于,所述导光板的一个周向外侧表面设有入光面,其余周向外侧表面涂覆有反射层,所述反射层可将入射到其表面的光反射回所述导光板内。
10.一种液晶显示器,其特征在于,包括权利要求1至9任意一项所述的背光模组。
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