CN103969888B - 显示模块和具有该显示模块的显示设备 - Google Patents
显示模块和具有该显示模块的显示设备 Download PDFInfo
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- G—PHYSICS
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- 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
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- 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
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- 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
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- G02F1/133603—Direct backlight with LEDs
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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
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- G02F1/133605—Direct backlight including specially adapted 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
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- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B5/02—Diffusing elements; Afocal elements
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
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Abstract
公开了一种显示模块和具有该显示模块的显示设备。所述显示模块包括:显示面板;背光单元,设置在显示面板后方,并被构造成朝向显示面板发射光;底框,被构造成容纳背光单元;反射板,设置在底框的内部,并被构造成将入射到所述反射板的一部分光朝向显示面板反射。反射板包括:板底部,与底框的前表面对应;板倾斜部,倾斜地形成为面对显示面板的后表面;调光部,设置在板倾斜部上,并被构造成调节被板倾斜部反射的一部分光。
Description
技术领域
与示例性实施例一致的设备和方法涉及一种通过液晶来显示图像的显示面板、具有朝向显示面板发光的背光单元的显示模块以及具有该显示模块的显示设备。
背景技术
显示模块是包括在其上显示图像的显示面板的装置,并用于诸如监控器和电视的各种显示设备。
液晶显示器(LCD)面板广泛地用作显示面板,但是使用LCD面板的显示面板自身不能发光。基于该原因,在显示面板后方设置了背光单元,并且在显示面板和背光单元之间布置了用于使从背光单元发射的光散射的散射板,从而使得光能够均匀地分散并被提供至整个显示面板。
此外,显示模块可包括反射片,该反射片设置在限定显示模块的后表面的底框(bottom chassis)内侧,以使被反射至底框的光朝向显示面板的前方反射。
在显示模块中,与显示面板的其他区域相比,仅少量的光可传播至显示面板的最外周侧。因此,在显示面板的最外周侧可能会产生阴影。因此,为了防止以上问题,光源需要被设置为靠近显示模块的侧部。
发明内容
示例性实施例可致力于解决至少以上问题和/或缺点以及以上未描述的其他缺点。此外,不要求示例性实施例克服上述缺点,并且示例性实施例可以不克服上述问题中的任一问题。
一个或更多个示例性实施例提供了一种显示模块和显示设备,所述显示模块和显示设备能够减少在显示面板的外周侧产生的光斑。
根据示例性实施例的一方面,提供了一种显示模块,所述显示模块包括:显示面板;背光单元,设置在显示面板后方,以朝向显示面板发射光;底框,在所述底框中容纳背光单元;反射板,设置在底框的内部,以使得从背光单元发射的光向前反射,其中,反射板包括:板底部,与底框的后表面对应;板倾斜部,倾斜地形成,以面对显示面板的后表面;至少一个调光部,设置在板倾斜部上,以调节被板倾斜部反射的光。
调光部可包括与底框的前表面平行地延伸的多个缝。
调光部可包括与底框的前表面平行地延伸的矩形孔。
调光部可包括与底框的前表面平行地延伸的椭圆形孔。
背光单元可包括多个板和多个发光二极管(LED),所述多个LED设置在所述多个板上,以彼此分开,并且所述至少一个调光部包括彼此分开地形成的多个调光部,从而所述多个调光部与所述多个LED中的靠近板倾斜部设置的LED相对应。
背光单元可包括多个透镜,所述多个透镜分别安装在LED上,并且反射板可包括多个通孔,所述多个通孔设置在板底部中,从而LED和透镜穿过所述通孔突出。
根据示例性实施例的一方面,提供了一种显示设备,所述显示设备包括用于显示屏幕的显示模块,其中,显示模块包括:显示面板;背光单元,设置在显示面板后方,以朝向显示面板照射光;底框,用于将背光单元容纳在所述底框中;反射板,设置在底框的内部,以使得从背光单元发射的光向前反射,所述反射板包括:板底部,与底框的前表面对应;板倾斜部,倾斜地形成,以面对显示面板的后表面;至少一个调光部,设置在板倾斜部上,以调节被板倾斜部反射的光。
附图说明
通过参照附图对某些示例性实施例进行的描述,上述和/或其他方面将会变得明显,在附图中:
图1是示出了根据示例性实施例的显示设备的分解透视图;
图2是示出了根据示例性实施例的显示模块的分解透视图;
图3是示出了根据示例性实施例的显示模块的截面图;
图4是示出了根据示例性实施例的调光部的透视图;
图5是示出了根据示例性实施例的调光部的透视图;
图6是示出了根据示例性实施例的调光部的透视图;
图7是示出了根据示例性实施例的调光部的透视图。
具体实施方式
下面参照附图更加详细地描述一些示例性实施例。
在下面的描述中,即使在不同的附图中,相同的附图标号也用于相同的元件。在描述中所限定的诸如具体构造和元件的内容被提供用于帮助综合理解示例性实施例。因此,显而易见的是,在没有这些具体限定的内容的情况下,也能够执行示例性实施例。此外,没有对公知功能或构造进行详细地描述,这是因为它们可能会由于不必要的细节而使示例性实施例模糊。
如图1中所示,显示设备包括:显示模块10,在该显示模块10上显示图像;前壳体20F和后壳体20R,在前壳体20F和后壳体20R之间安装显示模块10,同时前壳体20F和后壳体20R沿前后方向彼此结合。控制基板30设置在显示模块10和后壳体20R之间,以向显示模块10传送电力和信号。
如图2和图3中所示,显示模块10包括显示面板11,该显示面板11包括用于显示屏幕的LCD面板。背光单元12设置在显示面板11的后方,并彼此隔开,以向显示面板11供应光。散射板13设置在显示面板11后方,从而从背光单元12照射的光被散射并透射到显示面板11,多个光学板14A和14B设置在散射板13的前表面上。
显示模块10包括:中部模框15,支撑显示面板11和散射板13;顶框(topchassis)16,安装在中部模框15前面,以将显示面板11定位在中部模框15上。背光单元12安装在底框17中,该底框17安装在中部模框15的后面。
背光单元12包括:印刷电路板12a,设置在底框17中,并均具有导电图案;LED12b,安装在每个印刷电路板12a的前表面上,以面对散射板13;圆形透镜12c,安装在各个LED12b上,以使由LED12b产生的光散射。
在示例性实施例中,每个印刷电路板12a都沿一方向延长,以具有与显示面板11对应的长度。印刷电路板12a按阵列设置成彼此平行地隔开。LED12b和安装在各个LED12b上的透镜12c被设置成沿每个印刷电路板的纵向方向彼此隔开。印刷电路板12a通过连接基板12d彼此连接。
光学板14A可包括棱镜膜,以使被散射板13散射的光沿与显示面板11垂直的方向聚集,并且光学板14B可包括保护膜,以保护棱镜膜。
中部模框15可被实施为在前侧具有显示面板11并且在后侧具有散射板13的模块,并且中部模框15可以为显示面板11和散射板13提供支撑。光学板14A和14B可进一步地设置在中部模框15的后侧和扩散板13之间。
顶框16具有覆盖显示面板11的外边缘的前表面的边框部(bezel portion)16a以及从边框部16a的外周向后弯曲的顶部侧表面部16b。
底框17大体呈矩形,并包括在其上布置背光单元12的底部前表面17a以及从底部前表面17a的外周朝向显示面板11延伸的底部侧表面17b。底部前表面17a具有凹入的放置槽17c,从而背光单元12的印刷电路板12a被分别布置在放置槽17c中。
显示模块10包括反射板18,该反射板18设置在底框17的内部,以将朝底框17内部照射的光朝着显示面板11反射。
反射板18包括:板底部18a,设置在限定底框17的前表面的底部前表面17a上;板倾斜部18b,从板底部18a的外周边缘18f朝向显示面板延伸。
在板底部18a的与每个LED12b和透镜12c对应的各个位置处设置有孔18c,从而LED12b和透镜12c通过孔18c从反射板18上突出出来。由LED12b产生的光L1沿向前的方向F朝向显示面板11发射,被散射板13沿向后的方向R反射的一部分光等被反射板18沿向前的方向反射。
板倾斜部18b从板底部18a的外周(即,从板底部18a的上-下-左-右端部)朝向显示面板11延伸,并相对于板底部18a的平面以倾斜角β倾斜地形成,以面对显示面板11的后表面。因此,由LED12b发射并入射到板倾斜部18b上的部分光L2可朝向显示面板11反射。在示例性实施例中,因为散射板13设置在显示面板11后方,所以板倾斜部18b被倾斜地形成为面对散射板13的后表面。
在显示模块10中,与显示面板11的其他区域相比,仅少量的光可透射至显示面板11的最外周侧。因此,与其他区域相比,在显示面板11的最外周侧可能会产生阴影。因此,为了防止上述问题,需要将LED12b设置成充分靠近板倾斜部18b。
然而,在LED12b与板倾斜部18b邻近地安装的情况下,由LED12b直接发射的光L1和被板倾斜部18b反射的光L2会同时到达显示面板11的与LED12b邻近的区域,因此,与其他区域相比,在显示面板11的与LED12b邻近的侧端处可能会产生光斑。
因此,为了防止上述问题,板倾斜部18b可设置有一个或多个调光部18d,以在一定程度上调节被板倾斜部18b反射的光,如图4中所示。
在示例性实施例中,调光部18d分别与被设置成靠近板倾斜部18b的LED12b对应。此外,在示例性实施例中,调光部18d中的每个均包括多个缝18e,所述多个缝18e与底框17的底部前表面17a平行地延伸。例如,缝18e可与设置在板底部18a和板倾斜部18b之间的外周边缘18f平行地延伸。
通过以直线的形式薄薄地切割板倾斜部18b而形成由缝18e构成的调光部18d。因此,朝向调光部18d入射的一部分光会穿过缝18e而泄漏至板倾斜部18b和底部侧表面17b之间的空间19。
此外,在通过切割板倾斜部18b形成调光部18d的过程中,与缝18e相邻的部分会凸出地或凹入地变形。因此,入射到调光部18d的一部分光可能会由于所述相邻部分的形状而沿缝的纵向发散。
因此,朝调光部18d入射的一部分光穿过缝而泄露,并由于缝的相邻部分而沿缝的纵向发散。因此,能够减少光集中在特定区域时所产生的光斑。
在示例性实施例中,调光部18d通过彼此平行地延伸的缝而形成,但是这并不是限制。如图5所示,调光部18d-1可被形成为与底部前表面17a平行地延伸的矩形孔。例如,矩形孔的长度方向可平行于外周边缘18f延伸。
如另一实施例,如图6所示,调光部18d-2可被形成为与底部前表面17a平行地延伸的椭圆形孔。例如,该椭圆形孔的长度方向可与外周边缘18f平行地延伸。
当调光部18d-1被形成为矩形孔或者调光部18d-2被形成为椭圆形孔时,由LED12b发射并入射到板倾斜部18b的一部分光会穿过矩形孔或椭圆形孔而泄漏至板倾斜部18b和底部侧表面17b之间的空间19。因此,减少了被板倾斜部18b朝向显示面板11的外周反射的光,从而减少了光斑的产生。
此外,如图7所示,可通过在板倾斜部18b上施加或涂覆光散射材料而制成光散射层,由该光散射层形成调光部18d-3。
通过上面的描述明显的是,因为调光部设置在反射板的板倾斜部并且被反射板的板倾斜部反射的光的数量减少或分散,所以能够减少在显示面板的外周侧产生的光斑。
前述示例性实施例和优点仅仅是示例性的,且不应被解释为限制。本发明的教导能够应用到其他类型的设备。此外,对示例性实施例的描述意在进行说明,而无意限制权利要求的范围,并且对于本领域的技术人员而言,多种可选形式、修改和变型是显而易见的。
Claims (4)
1.一种显示模块,包括:
显示面板;
背光单元,设置在显示面板后方,以朝向显示面板照射光;
底框,用于将背光单元容纳在所述底框中;
反射板,设置在底框的内部,以使得从背光单元照射的光朝向显示面板反射,
其中,反射板包括:板底部,与底框的前表面对应;板倾斜部,倾斜地形成,并面对显示面板的后表面;多个调光部,设置在板倾斜部上,以调节被板倾斜部反射的光,
其中,背光单元包括多个发光二极管,所述多个发光二极管彼此分开,
其中,所述多个调光部中的至少一个与所述多个发光二极管中的靠近所述板倾斜部设置的发光二极管相对应,
其中,所述多个调光部中的至少一个包括与底框的前表面平行地延伸的多个缝,
其中,所述多个缝是通过以直线的形式切割板倾斜部而形成的,并且
在通过切割板倾斜部形成调光部的过程中,与缝相邻的部分凸出地或凹入地变形。
2.根据权利要求1所述的显示模块,其中,
背光单元还包括多个板,所述多个发光二极管设置在所述多个板上;并且
所述多个调光部彼此分开地形成,使得所述多个调光部与所述多个发光二极管中的靠近所述板倾斜部设置的发光二极管相对应。
3.根据权利要求2所述的显示模块,其中,
背光单元包括多个透镜,所述多个透镜分别安装在所述多个发光二极管中的每个发光二极管上;
反射板包括多个孔,所述多个孔设置在板底部中,使得所述多个发光二极管和所述多个透镜穿过所述多个孔而突出出来。
4.一种显示设备,包括如权利要求1至3任意一项所述的显示模块。
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EP2762957B1 (en) | 2016-09-14 |
CN103969888A (zh) | 2014-08-06 |
US20220128863A1 (en) | 2022-04-28 |
US10437103B2 (en) | 2019-10-08 |
US11619846B2 (en) | 2023-04-04 |
EP2762957A1 (en) | 2014-08-06 |
US10175532B2 (en) | 2019-01-08 |
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