CN1979281A - 便携式显示装置 - Google Patents
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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
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- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
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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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
- G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
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- G—PHYSICS
- G02—OPTICS
- 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
- G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
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Abstract
一种便携式显示装置,包括液晶显示屏;具有把光提供给液晶显示屏的光源的背光组件;包括在背光组件中的模制框架,形成所述模制框架带有阶梯单元,以致可以把液晶显示屏安装在模制框架上;以及位于阶梯单元中的光栅栏,所述光栅栏挡住从光源提供给液晶显示屏的光。
Description
有关申请的交叉参考
本申请要求2005年12月8日在韩国知识产权局提交的韩国专利申请2005-119868号的优先权和权益,其内容在此引述供参考。
技术领域
本发明涉及便携式显示装置,尤其涉及具有改进的预防光泄漏的便携式显示装置。
背景技术
近来,人们已经研发了重量轻、提及小的各种平板显示装置。示例的平板显示装置包括液晶显示器、场发射显示器、等离子体显示屏、发光显示器等。
具体说来,由于液晶显示器的尺寸小、重量轻和功耗低,液晶显示器已经流行而成为阴极射线管的替代物。还可以在大尺寸的监视器和电视机以及移动电话和个人数字助理(PDA)中使用这种装置。
图1是传统便携式显示装置的分解透视图。图1示出在移动电话等中使用的并安装有至少一个液晶显示器的双显示装置。图2是沿图1的线A-A’取得的组合的横截面图。
参考图1和图2,传统的便携式显示装置60包括液晶显示屏4、背光组件50、底座22、第一印刷电路板24、第二印刷电路板26以及发光显示屏30。
液晶显示屏4使用第一衬底4a、第二衬底4b和注入在第一衬底4a和第二衬底4b之间的液晶(未示出)来显示预定图像。
第二衬底4b包括按矩阵形式排列的多个薄膜晶体管(TFT)。TFT的源极连接到数据线,而其栅极连接到扫描线。TFT的漏极连接到由透明氧化锡铟(ITO)构成的像素电极,而透明氧化锡铟(ITO)是一种导电材料。当向扫描线提供扫描信号时,TFT导通,并且TFT把数据信号从数据线提供给像素电极。
在第二衬底4b的一侧上插入集成电路6,并且数据信号和扫描信号是从集成电路6提供的。在集成电路6的周围沉积了保护层8。
安排第一衬底4a使之面对第二衬底4b。在第一衬底4a的前表面上沉积了由ITO构成的公共电极。对公共电极施加预定电压,因此在公共电极和像素电极之间产生预定电场。注入在第一衬底4a和第二衬底4b之间的液晶的阵列角随电场而改变,光的透明度也根据阵列角而变化从而显示所要求的图像。在液晶显示屏4的上、下侧上提供上、下偏振光薄膜(未示出)。
背光组件50包括模制框架16、LED 12、LED衬底14、导光板18、反射板20以及光学片10。
LED 12发射与来自LED衬底14的驱动信号相对应的光量。导光板18把光从LED 12提供给液晶显示屏4。即,导光板18把光从其侧表面提供给位于其上侧的液晶显示屏4。
配置在导光板18后表面上的反射板20使来自导光板18的入射光返回到导光板18。光学片10增强来自导光板18的光的亮度,把经增强的光提供给液晶显示屏4。
连接到第一印刷电路板24的LED衬底14把驱动信号提供给与来自第一印刷电路板24的驱动信号对应的LED 12。模制框架6接受和固定安装有LED 12的LED衬底14。此外,在模制框架16中固定和支撑液晶显示屏4和背光组件50。
底座22固定到在其下侧的模制框架16上。在底座22的一部分上形成开口以致可以把发光显示屏30插入其中。
通过移动电话连接器28把来自位于移动电话侧的驱动电路(未示出)的驱动信号提供给第二印刷电路板26。移动电话连接器28固定到另一个连接器,该另一个连接器附加在位于移动电话侧的驱动电路上以向其提供来自移动电话中的驱动电路的驱动信号。提供有驱动信号的第二印刷电路板26产生与驱动信号对应的各种控制信号。
通过形成于第二印刷电路板26上的第一焊盘单元38把第一印刷电路板24连接到第二印刷电路板26。通过柔性印刷电路板(未示出)把第一印刷电路板24连接到液晶显示屏4的集成电路6和LED衬底14。连接到集成电路6和LED衬底14的第一印刷电路板24相应于从第二印刷电路板26提供的控制信号驱动集成电路6和LED衬底14。
发光显示屏30包括第一衬底30a和第二衬底30b。有机LED(未示出)按矩阵形式配置在第一衬底30a上。有机LED产生与所提供的电流量对应的预定光量。发光显示屏30通过柔性印刷电路板32的第二焊盘单元36连接到第二印刷电路板26。集成电路34安装在柔性印刷电路板32上。集成电路34使发光显示屏30响应于从第二印刷电路板26提供的控制信号而显示预定图像。
然而,传统的便携式显示装置60会让光漏入不需要的区域。更具体地说,由于把从背光组件50提供的光发射到液晶显示屏4的非像素区域,所以使传统便携式显示装置的光效率和图像质量变差。此外,如图2中所示,如果碎片P通过液晶显示屏4和模制框架16之间的空间进入背光组件50,则会阻断光,并使图像质量进一步变差。此外,传统便携式显示装置60具有相当不牢固的模制框架,因为显示屏4是安装模制框架16上并且受模制框架16支撑的。
发明内容
本发明提供了一种增强光效率和防止光泄漏的便携式显示装置。此外,本发明还提供了一种增强液晶显示屏和模制框架之间的连接以防止碎片进入背光组件的便携式显示装置。
所提供的便携式显示装置包括背光组件,该组件具有用于把光提供给显示屏的光源以及具有带有外围阶梯平台的模制框架。在外围阶梯平台上安装光栅栏,光栅栏用于支撑显示屏和在背光组件的外围处挡住从光源提供的光。
在一种示例实施例中,光栅栏置于液晶显示屏的非像素区域之上。用与液晶显示屏的像素区域对应的开口来形成光栅栏的预定部分。液晶显示屏位于光栅栏的上侧,并且至少一个光学片位于光栅栏的下侧以增强从光源提供的光的均匀性或亮度。光栅栏的两个表面可以是不透明的。光栅栏的两个表面可以彼此有不同的颜色。光栅栏的两个表面中贴近液晶显示屏的第一表面可以是不透明的,而按诸如白色或银色等反射颜色来设置贴近阶梯单元的第二表面。光栅栏可以是双面胶带。光栅栏围绕液晶显示屏的后周界,并且液晶显示屏的像素区域位于光栅栏的封闭区域中。
用于显示装置的光栅栏的另一个实施例包括尺寸符合显示区域并具有大小对应于至少一部分非显示区域的内通孔的平面框架,平面框架可安装在阶梯单元上并具有第一平面表面和第二平面表面,第一平面表面和第二平面表面可以分别为两者都是不透明的或第一平面表面是不透明的而第二平面表面是反射型的。
附图说明
图1是传统便携式显示装置的分解透视图。
图2是沿图1种的线A-A’取得的装配横截面图。
图3是根据本发明一种实施例的具有光栅栏的便携式显示装置的分解透视图。
图4是沿图3的线B-B’取得的装配横截面图。
图5A和5B是根据图3和图4所示的本发明实施例的光栅栏的一侧和其对立一侧的透视图。
图6是根据本发明另一种示例实施例的光栅栏应用的横截面图。
图7A和7B是根据图6所示的本发明实施例的光栅栏的一侧和其对立一侧的透视图。
具体实施方式
参考图3、4、5A和5B,根据本发明一个实施例的便携式显示装置160包括液晶显示屏104、背光组件150、底座122、第一印刷电路板124、第二印刷电路板126、发光显示屏130以及位于液晶显示屏104和背光组件150之间的光栅栏105。
液晶显示屏104显示预定图像,并且包括第一衬底104a、第二衬底104b和注入在第一衬底104a和第二衬底104b之间的液晶(未示出)。
第二衬底104b包括按矩阵形式排列的多个TFT。TFT的源极连接到数据线,而其栅极连接到扫描线。TFT的漏极连接到由透明ITO构成的像素电极。当向扫描线提供扫描信号时,TFT导通,并且TFT把数据信号从数据线提供给像素电极。
在第二衬底104b的一侧上插入集成电路106,并且数据信号和扫描信号是从集成电路106提供的。在集成电路106的周围沉积有保护层108。
安排第一衬底104a使之面对第二衬底104b。在第一衬底104a的前表面上施加了由ITO构成的公共电极。对公共电极施加预定电压,在公共电极和像素电极之间产生预定电场。注入在第一衬底104a和第二衬底104b之间的液晶的阵列角随电场而改变,光的透射度也根据阵列角而变化从而显示所要求的图像。在液晶显示屏104的上、下侧上分别提供上、下偏振光薄膜(未示出)。
背光组件150包括模制框架116、LED 112、LED衬底114、导光板118、反射板20以及光学片110。
LED 112发射与来自LED衬底114的驱动信号相对应的光量。导光板118把光从LED 112提供给液晶显示屏104。
配置在导光板118后表面上的反射板120使来自导光板118的入射光返回到导光板118以提高光学效率。
第一光学片110增强来自导光板118的光的均匀性和亮度,把经增强的光提供给液晶显示屏104。
连接到第一印刷电路板124的LED衬底114把驱动信号提供给与来自第一印刷电路板124的驱动信号对应的LED 112。
安装有LED 112的LED衬底114固定在模制框架116上。此外,模制框架116固定和支撑液晶显示屏104和背光组件150。在模制框架116的内侧表面上形成用于接受液晶显示屏104的阶梯单元116a。
底座122固定到模制框架116上并在模制框架的下侧。在底座122的一部分上形成开口,以使可以把发光显示屏130插入其中。
通过移动电话连接器128把来自位于移动电话侧的驱动电路(未示出)的驱动信号提供给第二印刷电路板126。移动电话连接器128固定到另一个连接器,该另一个连接器附加在位于移动电话侧的驱动电路上,以向其提供来自驱动电路的驱动信号。提供有驱动信号的第二印刷电路板126产生与驱动信号对应的各种控制信号。
通过形成于第二印刷电路板126上的第一焊盘单元138把第一印刷电路板124连接到第二印刷电路板126。通过柔性印刷电路板(未示出)把第一印刷电路板124连接到第一液晶显示屏104的集成电路106和LED衬底114。连接到集成电路106和LED衬底114的第一印刷电路板124相应于从第二印刷电路板126提供的控制信号来驱动集成电路106和LED衬底114。
发光显示屏130包括第一衬底130a和第二衬底130b。有机LED(未示出)按矩阵形式配置在第一衬底130a上。有机LED产生与所提供的电流量对应的预定光量。发光显示屏130通过柔性印刷电路板132的第二焊盘单元136连接到第二印刷电路板126。集成电路134安装在柔性印刷电路板132上。集成电路134使发光显示屏130响应于从第二印刷电路板126提供的控制信号而显示预定图像。
在液晶显示屏104和背光组件150之间提供光栅栏105。例如,光栅栏105可以位于安装有液晶显示屏104的模制框架116的阶梯单元116a上。此时,光栅栏105位于液晶显示屏104和光学片110之间,如图4所示。光栅栏105的两侧可以是不透明的,以提高置于液晶显示屏104的非像素区域104_NA上的光栅栏105的效率同时包围液晶显示屏104的后表面的周界。在与液晶显示屏104的像素区域104_A对应的光栅栏105的预定部分中形成开口。因此,可以防止光发射到非像素区域104_NA,从而提高图像质量。
此外,光栅栏105可以增强液晶显示屏104和模制框架116之间的连接,因为光栅栏105是由诸如双面胶带之类的粘合件构成的。光栅栏105与内开口一起附加到液晶显示屏104上以致它包围显示屏104的整个周界。例如,可以附加平坦矩形边沿框架形状的光栅栏105,置于非像素区域104_NA上。当把光栅栏105与内封闭结构一起附加于显示屏104上时,有效地挡住碎片P’进入背光组件150。更具体地,虽然碎片P’会进入液晶显示屏104和模制框架116侧表面之间的空间,但是由于用双面胶带构成的光栅栏105,碎片P’难于进入背光组件150。因此,可以防止由于碎片流入而引起的图像质量变差。
在图6、7A和7B中示出的另外的另一种实施例中,光栅栏105两侧的颜色可以彼此不同以通过增加光效率来提高像素区域104_A的亮度。更具体地说,光栅栏105’的第一表面105a’可以是不透明的,诸如黑色,并且光栅栏105’的第二表面105b’可以是白色或银色。然而,光栅栏105’的第二表面105b’的颜色不限于白色或银色,而可以是任何颜色。
下面将使用图4的显示装置,但是用图6、7A和7B中所示的光栅栏实施例来描述光栅栏防止光泄漏到非像素区域104_NA的原理。
如果把来自背光组件150的光发射到非像素区域104_NA,则会发生光泄漏。例如,当光从LED 112经由光学片110发射到液晶显示屏104和模制框架116之间的非像素区域104_NA时,会发生光泄漏。当光栅栏105’置于液晶显示屏104和模制框架116的阶梯单元116a之间时,光栅栏105’的第一表面105a’是不透明的,而第二表面105b’是诸如白色或银色等的反射色,导入非像素区域104_NA的光经过光栅栏105’的第二表面105b’的反射,并且经由光学片110导入导光板118。因此,把提供给导光板118的大多数光提供给液晶显示屏104的像素区域104_A。这样,把光导入像素区域104_A而不是非像素区域104_NA防止了光泄漏并提高了光效率,提高了像素区域104_A的亮度。此外,把光栅栏105’的第一表面105a’设置成不透明减少了未来的光泄漏。可以把第二显示屏设置为发光显示屏130,例如,液晶显示屏。这样,把从光栅栏105’反射到导光板118的光提供给第二显示屏,因此增强了第二显示屏的亮度。
如上所述,根据本发明的便携式显示装置可以防止光泄漏和增强光效率,提高图像质量。在一种示例实施例中,把光栅栏置于液晶显示屏和背光组件之间。此外,根据本发明的便携式显示装置通过用诸如双面胶带之类的粘合件形成光栅栏,可以增强液晶显示屏和模制框架之间的连接以防止由于碎片引起的图像质量变差。
虽然上文中已经示出和描述了本发明的示例实施例,但是熟悉本技术领域的人员会理解,可以在不偏离本发明的原理和精神的情况下,对这些实施例作出修改,本发明的范围是由权利要求书和其等效所限定的。
Claims (10)
1.一种便携式显示装置,包括:
显示屏;
具有用于把光提供给显示屏的光源以及具有带外围阶梯平台的模制框架,以及
在外围阶梯平台上安装光栅栏,光栅栏用于支撑显示屏和在背光组件的外围处挡住从光源提供的光。
2.如权利要求1所述的便携式显示装置,其特征在于,
所述光栅栏置于显示屏的非像素区域之上。
3.如权利要求1所述的便携式显示装置,其特征在于,所述光栅栏具有与显示屏的像素区域对应的内开口。
4.如权利要求1所述的便携式显示装置,其特征在于,
所述显示屏位于所述光栅栏的第一侧,并且
其中,至少一个光学片位于所述光栅栏的第二侧。
5.如权利要求1所述的便携式显示装置,其特征在于,
所述光栅栏具有第一平面表面;以及
第二平面表面;
其中,第一平面表面和第二平面表面是不透明的。
6.如权利要求1所述的便携式显示装置,其特征在于,
所述第一平面表面为第一种颜色;以及
所述第二平面表面为第二种颜色。
7.如权利要求6所述的便携式显示装置,其特征在于,
所述光栅栏的所述第一平面表面是不透明的,而所述第二平面表面是反射型的。
8.如权利要求1所述的便携式显示装置,其特征在于,用双面胶带来形成所述光栅栏。
9.如权利要求1所述的便携式显示装置,其特征在于,所述显示屏是液晶显示屏。
10.一种用于显示装置的光栅栏,所述显示装置具有带有显示区域和非显示区域两者的显示屏;以及具有用于把光提供给显示屏的光源和具有带有外围阶梯平台的模制框架的背光组件,所述光栅栏包括:
尺寸符合显示区域并具有大小对应于至少一部分非显示区域的内通孔的平面框架,平面框架可安装在阶梯单元上并具有第一平面表面和第二平面表面,第一平面表面和第二平面表面两者是不透明的或第一平面表面是不透明的而第二平面表面是反射型的。
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JP4800046B2 (ja) * | 2006-01-31 | 2011-10-26 | 株式会社日立製作所 | ストレージシステム |
US8548947B2 (en) * | 2006-04-28 | 2013-10-01 | Hewlett-Packard Development Company, L.P. | Systems and methods for file maintenance |
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2005
- 2005-12-08 KR KR1020050119868A patent/KR100762689B1/ko not_active IP Right Cessation
-
2006
- 2006-05-10 JP JP2006131967A patent/JP2007156398A/ja active Pending
- 2006-10-13 US US11/580,563 patent/US7884895B2/en active Active
- 2006-12-05 CN CNA2006101684193A patent/CN1979281A/zh active Pending
- 2006-12-08 EP EP06256261A patent/EP1795952A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102013214B (zh) * | 2009-09-08 | 2014-12-03 | 群康科技(深圳)有限公司 | 平面显示器及其组装方法 |
CN104735861A (zh) * | 2013-12-23 | 2015-06-24 | 英飞凌科技股份有限公司 | 向多个负载提供电流的设备及其制造方法 |
CN104735861B (zh) * | 2013-12-23 | 2018-08-14 | 英飞凌科技股份有限公司 | 向多个负载提供电流的设备及其制造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070132917A1 (en) | 2007-06-14 |
JP2007156398A (ja) | 2007-06-21 |
US7884895B2 (en) | 2011-02-08 |
KR20070060453A (ko) | 2007-06-13 |
KR100762689B1 (ko) | 2007-10-01 |
EP1795952A1 (en) | 2007-06-13 |
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