CN101435941A - 液晶显示器用防护滤光器 - Google Patents
液晶显示器用防护滤光器 Download PDFInfo
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- CN101435941A CN101435941A CNA2008101764638A CN200810176463A CN101435941A CN 101435941 A CN101435941 A CN 101435941A CN A2008101764638 A CNA2008101764638 A CN A2008101764638A CN 200810176463 A CN200810176463 A CN 200810176463A CN 101435941 A CN101435941 A CN 101435941A
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Images
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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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- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
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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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Abstract
本发明提供一种液晶显示器用防护滤光器，包括：透明基板；隔热膜，包括在所述透明基板上交替形成的金属化合物薄膜和透明金属薄膜。
Description
对相关中请的交叉引用
本申请要求2007年11月13日向韩国知识产权局递交的韩国专利申请2007-0115764的权益，其全部内容通过引用合并于此。
技术领域
本发明涉及一种液晶显示器用防护滤光器。
背景技术
随着信息技术的日益发展，在用户和信息之间作为连接媒介的显示设备市场广泛扩大。由此，增长了液晶显示器(LCD)、有机发光显示器(OLED)、等离子显示器(PDP)等平板显示器(FPD)的使用。其中，LCD因为能够以大尺寸以及小尺寸进行制造而引人注目。
LCD被用于电视以及个人或办公台式计算机的显示器，并且其应用最近变得更广，例如用于公共显示器(PD)。
因为PD用LCD通常安装在室外，所以可能直接受到外部环境影响。例如，LCD可能被直接暴露在阳光照射的高温环境。如果LCD长时间暴露在高温环境，则可能会恶化LCD的寿命和显示质量。
因此，需要一种在高温环境下保护LCD的解决方案。
发明内容
本发明旨在解决现有技术中存在的上述问题。由此，本发明的一个目的是提供一种液晶显示器(LCD)用防护滤光器，即使在液晶显示器暴露于高温环境时，也能够最小化受热影响。
参照以下描述，与本发明有关的本发明的其它目的可以被本领域技术人员清楚地理解。
为了实现本发明的上述目的，根据本发明的一个方面，提供一种液晶显示器用防护滤光器，包括：透明基板；隔热膜，包括在所述透明基板上交替形成的金属化合物薄膜和透明金属薄膜。
其它实施方式的详细内容包括在详细描述和附图内。
根据本发明的上述结构，通过LCD用防护滤光器的隔热膜可以保护LCD免受高温环境的受热。在对安装于室外的LCD提供保护时，使用LCD用防护滤光器会更有效。
附图说明
从以下结合附图的详细描述中，本发明的上述和其它目的、特征以及优点将会更容易理解，其中：
图1为说明根据本发明一个实施方式的液晶显示器(LCD)用防护滤光器的示意图；
图2为说明图1的LCD用防护滤光器的隔热膜的详细图；和
图3为说明根据本发明一个实施方式的LCD的示意图。
具体实施方式
下面将更详细地描述本发明的优选实施方式，其实施例例示在附图中。在附图和描述中所使用的相同标记始终指代相同或相似的部件。
图1为说明根据本发明一个实施方式的液晶显示器(LCD)用防护滤光器的示意图。
参照图1，LCD用防护滤光器120包括透明基板130和在透明基板130上形成的隔热膜140。防护滤光器120可以进一步包括在透明基板130上形成的防反射(AR)膜150和防碎膜160。
透明基板130可以由耐刮痕和强度好的玻璃制成，但本发明不限于此。例如代替玻璃，透明基板130可以由透明聚合物树脂构成，透明聚合物树脂可以包括选自由聚对苯二甲酸乙二醇酯、聚砜、聚醚砜、聚苯乙烯、聚萘二甲酸乙二醇酯、多芳基化合物、聚醚醚酮、聚碳酸酯、聚丙烯、聚酰亚胺、三乙酰基纤维素和聚甲基丙烯酸甲酯构成的组中的一种或多种化合物。
隔热膜140能够阻挡自外部进入的热量。现在参照图2将详细描述隔热膜140。
图2为说明图1的LCD用防护滤光器的隔热膜的详细图。
在图2中，隔热膜140可以包括在透明基板130上交替形成的金属化合物薄膜142和透明金属薄膜144。在此，层叠的金属化合物薄膜142和透明金属薄膜144的数量可以依据放置LCD的外部环境而改变，因此并不限于特定的数量。
金属化合物薄膜142可以对可见光线透明，并具有与透明金属薄膜144的折射率不同的折射率，由此防止可见光线的反射。
金属化合物薄膜142可以包括对550nm波长的光线具有折射率例如为1.4或更高的高折射材料。
具体地，金属化合物薄膜142可以包括选自由氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)、掺铝氧化锌(AZO)、氧化钛(TiO2)、氧化镉锡(CTO)、氧化铝(Al2O3)、氧化镁(MgO)、氧化钍(ThO2)、氧化锡(SnO2)、氧化镧(LaO2)、氧化硅(SiO2)、氧化铟(In2O3)、氧化铌(Nb2O5)、氧化锑(Sb2O3)、氧化锆(ZrO2)、氧化铈(CeO2)、氧化铋(BiO2)等；和硫化锌(ZnS)、硫化镉(CdS)、硫化锑(Sb2S3)等金属硫化物等构成的组中的一种或多种化合物。其中，可以优选ITO、ZnO或TiO2。这是因为ITO和ZnO几乎不吸收可见光线以及对可见光线具有约2.0的高折射率，TiO2对可见光线具有约2.3的高折射率以及具有绝缘性。
金属化合物薄膜142的厚度可以在5nm～100nm的范围内，并且在透明基板上可以提供例如4～5层金属化合物薄膜。虽然多层金属化合物薄膜142彼此之间可以具有不同或相同的厚度，但本发明不限于此。
透明金属薄膜144可以包括导电率优异的、对可见光线透射率高的、耐热性(h)高的Ag。然而，因为Ag具有较低的化学和物理稳定性，并且在外部环境下易被恶化，所以透明金属薄膜144可以包括代替Ag的Ag合金。Ag合金可以包括Ag以及在外部环境下稳定的诸如Au、Pt、Pd、Cu、In、Sn等一种或多种金属。同时，因为公知的是，如果另一种金属添加到Ag中，会恶化导电性和光学性能，所以至少一个透明金属薄膜144可以仅包含Ag。
透明金属薄膜144可以具有3nm～30nm的厚度，并且在透明基板上可以总共提供4层金属化合物薄膜。虽然层叠的透明金属薄膜144彼此之间可以具有不同或相同的厚度，但本发明不限于此，这是因为可以考虑金属化合物薄膜142的透射率和导电性对其确定。
金属化合物薄膜142和透明金属薄膜144可以通过利用溅射法、离子镀法、真空蒸镀法和电镀法中的任意一种方法来形成。
例如，含ITO的金属化合物薄膜142可以通过使用铟类金属靶或氧化铟类烧结靶的反应溅射法来形成。此外，含Ag的透明金属薄膜144可以通过使用含Ag靶的溅射法来形成。
如上所述，本发明的LCD用防护滤光器可以通过隔热膜140阻挡外部热(h)。由此，即使装配有防护滤光器120的LCD长期被暴露于高温环境，LCD的寿命和显示质量也不会退化。
再参照图1，在隔热膜140上形成防反射膜150以减少自外部射入光线的反射，并且防反射膜150可以包括底层152和防反射层154。
底层152可以包括选自由聚对苯二甲酸乙二醇酯、聚砜、聚醚砜、聚苯乙烯、聚萘二甲酸乙二醇酯、多芳基化合物、聚醚醚酮、聚碳酸酯、聚丙烯、聚酰亚胺、三乙酰基纤维素和聚甲基丙烯酸甲酯构成的组中的至少一种透明聚合物树脂。
防反射层154可以包括具有不同折射率的两层以上薄层，并由金属氧化物、氟化物、硅化物、硼化物、碳化物、氮化物、硫化物等无机化合物或者硅系树脂、丙烯酸类树脂、氟树脂等有机化合物构成。例如，防反射层154可以由交替层叠的SiO2等低折射氧化物层和TiO2等高折射氧化物层构成。
然而，防反射层154可以由单层构成。例如，防反射层154可以由透明含氟聚合物树脂、氟化镁、硅系树脂、氧化硅等的单层构成，该单层在可见光线的范围内具有1.5或更低的折射率，优选具有1.4或更低的折射率，并且厚度为波长的四分之一。
在透明基板因外部撞击而破碎时，防碎膜160用来防止透明基板130碎裂成碎片。然而，根据透明基板130和装配有防护滤光器120的LCD的技术条件，防碎膜160可以省略。
图3为说明根据本发明一个实施方式的LCD的示意图。因为图3所示的防护滤光器与图1的防护滤光器相同，所以对其赋予了相同的附图标记。
在图3中，本发明的LCD 200可以用作公共显示器，但本发明不限于此。LCD 200包括装在外罩202内的显示器组件210和防护滤光器120。
显示器组件210包括液晶层，虽然在图中未示出，但利用液晶层的电-光特性显示图像。
防护滤光器120可以放置在显示器组件210的前面以保护显示器组件免受外部环境影响。特别是因为防护滤光器120可以阻挡外部热(h)，即使在LCD 200长时间暴露于高温环境时，也可以不退化LCD 200的寿命和显示质量。
虽然本发明已经描述了相关本发明的示例性实施方式，本领域技术人员能够理解，在本发明的技术范围和本质特征内可以以其它方式实施本发明。
因此，应该理解的是，本发明的示例性实施方式仅用于说明目的，且本发明仅由权利要求书的范围限定。
Claims (4)
1、一种液晶显示器(LCD)用防护滤光器，包括：
透明基板；和
隔热膜，包括在所述透明基板上交替形成的金属化合物薄膜和透明金属薄膜。
2、根据权利要求1所述的防护滤光器，进一步包括在所述隔热膜上形成的防反射(AR)膜，以减少自外部射入的环境光线的反射。
3、根据权利要求1所述的防护滤光器，其中所述金属化合物薄膜包括选自由氧化铟锡(ITO)、氧化铟锌(IZO)、氧化锌(ZnO)、掺铝氧化锌(AZO)、氧化钛(TiO2)、氧化镉锡(CTO)、氧化铝(Al2O3)、氧化镁(MgO)、氧化钍(ThO2)、氧化锡(SnO2)、氧化镧(LaO2)、氧化硅(SiO2)、氧化铟(In2O3)、氧化铌(Nb2O5)、氧化锑(Sb2O3)、氧化锆(ZrO2)、氧化铈(CeO2)、氧化铋(BiO2)、硫化锌(ZnS)、硫化镉(CdS)和硫化锑(Sb2S3)构成的组中的一种或多种化合物。
4、根据权利要求1所述的防护滤光器，其中所述透明金属薄膜包含Ag或Ag合金。
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| KR1020070115764 | 2007-11-13 | ||
| KR1020070115764A KR20090049493A (ko) | 2007-11-13 | 2007-11-13 | 액정 표시장치용 보호 필터 |
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| US (1) | US20090122238A1 (zh) |
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| CN105116482A (zh) * | 2015-09-01 | 2015-12-02 | 昆山龙腾光电有限公司 | 偏光板和显示面板结构以及显示装置 |
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| KR101211910B1 (ko) * | 2011-09-27 | 2012-12-13 | (주)디씨엠플러스 | 액정디스플레이 보호용 강화유리커버 및 이를 제작하는 방법 |
| CN106054455A (zh) * | 2016-08-10 | 2016-10-26 | 武汉华星光电技术有限公司 | 一种直下式背光模组 |
| EP4112354A1 (en) * | 2021-06-29 | 2023-01-04 | Ficosa Adas, S.L.U. | Method and system for operating a display device, specially in a motor vehicle |
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| US3682528A (en) * | 1970-09-10 | 1972-08-08 | Optical Coating Laboratory Inc | Infra-red interference filter |
| TW446637B (en) * | 1996-05-28 | 2001-07-21 | Mitsui Chemicals Inc | Transparent laminates and optical filters for displays using the same |
| JPH10258480A (ja) * | 1997-03-21 | 1998-09-29 | Teijin Ltd | 表示装置 |
| JP4708587B2 (ja) * | 2001-03-07 | 2011-06-22 | Ｎｅｃ液晶テクノロジー株式会社 | 表示装置 |
| KR100973647B1 (ko) * | 2007-11-20 | 2010-08-02 | 삼성코닝정밀소재 주식회사 | 디스플레이 장치용 필터 |
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| CN105116482A (zh) * | 2015-09-01 | 2015-12-02 | 昆山龙腾光电有限公司 | 偏光板和显示面板结构以及显示装置 |
| CN105116482B (zh) * | 2015-09-01 | 2018-11-23 | 昆山龙腾光电有限公司 | 偏光板和显示面板结构以及显示装置 |
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| JP2009122676A (ja) | 2009-06-04 |
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