TWI721586B - Polarizing plate and optical display comprising the same - Google Patents
Polarizing plate and optical display comprising the same Download PDFInfo
- Publication number
- TWI721586B TWI721586B TW108135721A TW108135721A TWI721586B TW I721586 B TWI721586 B TW I721586B TW 108135721 A TW108135721 A TW 108135721A TW 108135721 A TW108135721 A TW 108135721A TW I721586 B TWI721586 B TW I721586B
- Authority
- TW
- Taiwan
- Prior art keywords
- shielding layer
- polarizing plate
- light shielding
- weight
- display area
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Polarising Elements (AREA)
- Liquid Crystal (AREA)
Abstract
Description
[相關申請案的交叉參考] 本申請案主張於2018年10月2日在韓國智慧財產局提出申請的韓國專利申請案第10-2018-0117867號的權利，所述韓國專利申請案的全部揭露內容併入本案供參考。[Cross reference of related applications] This application claims the rights of Korean Patent Application No. 10-2018-0117867 filed with the Korean Intellectual Property Office on October 2, 2018, and the entire disclosure of the Korean patent application is incorporated into this case for reference.
本發明是有關於一種偏光板及一種包含其的光學顯示器。The present invention relates to a polarizing plate and an optical display containing the polarizing plate.
光學顯示器是由顯示區及非顯示區構成。顯示區是透光的，且顯示欲藉由螢幕觀看到的影像。非顯示區沿顯示區的周邊設置成環繞顯示區。非顯示區設置有印刷電路板、驅動晶片等，以使得對於光學顯示器的使用者而言不可見。非顯示區是藉由塑膠框架達成。The optical display is composed of a display area and a non-display area. The display area is light-transmissive and displays the image to be viewed on the screen. The non-display area is arranged to surround the display area along the periphery of the display area. The non-display area is provided with a printed circuit board, a driving chip, etc., so as to be invisible to users of the optical display. The non-display area is achieved by a plastic frame.
近年來，在此項技術中已開發出一種採用包括印刷於偏光器保護膜上而非塑膠框架上的光屏蔽層的積體型偏光板的技術。In recent years, in this technology, a technology using an integrated polarizing plate including a light shielding layer printed on a polarizer protective film instead of a plastic frame has been developed.
可使用包括光屏蔽層的此種偏光板以及顯示面板來製造光學顯示器。一般而言，偏光板具有較顯示面板大的尺寸。因此，將包括形成於其上的光屏蔽層的偏光板的四個表面中的一者附著至顯示面板，且使用雷射束切割自顯示面板突出的偏光板的一部分。此處，藉由在用於製造光學顯示器的設備中辨識形成於偏光板下側上的對準標記（alignment mark）來確定欲切割的偏光板的精確位置。Such a polarizing plate including a light shielding layer and a display panel can be used to manufacture an optical display. Generally speaking, the polarizing plate has a larger size than the display panel. Therefore, one of the four surfaces of the polarizing plate including the light shielding layer formed thereon is attached to the display panel, and a part of the polarizing plate protruding from the display panel is cut using a laser beam. Here, the precise position of the polarizing plate to be cut is determined by recognizing the alignment mark formed on the lower side of the polarizing plate in the equipment for manufacturing the optical display.
由於典型的偏光板在可見光譜中確保一定程度的透光率，因此在辨識對準標記方面不存在問題。然而，由於光屏蔽層使光在可見光譜中及紅外（infrared，IR）光譜中的透射率顯著劣化，因此光屏蔽層在辨識對準標記方面帶來問題。另一方面，當在光屏蔽層中含有染料時，存在如下問題：由於在可見光譜中光密度（optical density，OD）降低所導致的光屏蔽效果劣化且由於光屏蔽層對偏光器保護膜、偏光器及結合層的黏合劣化所導致的不良可靠性及耐久性，因此光屏蔽層無法提供其固有的效果。在本文中，「OD」是指用於評價光屏蔽性質的指數，且OD越高則表示光屏蔽性質越佳。Since a typical polarizer ensures a certain degree of light transmittance in the visible spectrum, there is no problem in recognizing the alignment mark. However, since the light shielding layer significantly deteriorates the transmittance of light in the visible spectrum and the infrared (IR) spectrum, the light shielding layer causes problems in recognizing the alignment marks. On the other hand, when dyes are contained in the light-shielding layer, there are problems in that the light-shielding effect is deteriorated due to the decrease in optical density (OD) in the visible spectrum and the light-shielding layer affects the polarizer protective film, Due to poor reliability and durability caused by the deterioration of the adhesion between the polarizer and the bonding layer, the light shielding layer cannot provide its inherent effects. In this article, "OD" refers to an index used to evaluate light-shielding properties, and the higher the OD, the better the light-shielding properties.
在韓國專利特許公開案第2015-0015243號等中揭露了本發明的背景技術。The background art of the present invention is disclosed in Korean Patent Laid-open No. 2015-0015243 and others.
本發明的一個態樣意欲提供一種偏光板，所述偏光板包括光屏蔽層，所述光屏蔽層在IR光譜中具有良好的光屏蔽性質及良好的透光率，以使得能夠在將偏光板結合至面板之後，藉由改善在切割時對對準標記的辨識來有效地切割偏光板。One aspect of the present invention intends to provide a polarizing plate, the polarizing plate includes a light shielding layer, the light shielding layer has good light shielding properties and good light transmittance in the IR spectrum, so that the polarizing plate can be After being bonded to the panel, the polarizing plate can be cut effectively by improving the recognition of the alignment mark during cutting.
本發明的另一態樣意欲提供一種偏光板，所述偏光板包括對偏光器保護膜表現出良好黏合的光屏蔽層。Another aspect of the present invention intends to provide a polarizing plate including a light shielding layer exhibiting good adhesion to the polarizer protective film.
本發明的又一態樣意欲提供一種偏光板，所述偏光板包括對所述偏光板的偏光器及結合層表現出良好黏合的光屏蔽層。Another aspect of the present invention intends to provide a polarizing plate including a light shielding layer that exhibits good adhesion to the polarizer and the bonding layer of the polarizing plate.
本發明的又一態樣意欲提供一種具有良好可靠性及耐久性的偏光板。Another aspect of the present invention intends to provide a polarizing plate with good reliability and durability.
根據本發明的一個態樣，提供一種偏光板，所述偏光板由顯示區及環繞所述顯示區的非顯示區構成，且包括：偏光器；結合層及第一偏光器保護膜，依序堆疊於所述偏光器的一個表面上；以及光屏蔽層，形成於所述第一偏光器保護膜的下表面上，且嵌置於所述結合層中以構成所述非顯示區的至少部分。所述光屏蔽層可包含選自由三伸苯基銨系染料及四伸苯基銨系染料構成的群組的至少一種有機染料或者其兩性離子化合物。According to one aspect of the present invention, a polarizing plate is provided. The polarizing plate is composed of a display area and a non-display area surrounding the display area, and includes: a polarizer; a bonding layer and a first polarizer protective film, in order Stacked on one surface of the polarizer; and a light shielding layer formed on the lower surface of the first polarizer protective film and embedded in the bonding layer to form at least part of the non-display area . The light shielding layer may include at least one organic dye selected from the group consisting of triphenylammonium-based dyes and tetraphenylammonium-based dyes, or zwitterionic compounds thereof.
在一個實施例中，所述第一偏光器保護膜可為聚對苯二甲酸乙二醇酯（polyethylene terephthalate，PET）、環烯烴聚合物（cyclic olefin polymer，COP）或三乙醯基纖維素（triacetylcellulose，TAC）膜。In one embodiment, the first polarizer protective film may be polyethylene terephthalate (PET), cyclic olefin polymer (COP) or triacetyl cellulose (Triacetylcellulose, TAC) membrane.
在一個實施例中，所述偏光板在設置有所述光屏蔽層的所述非顯示區中在950奈米的波長下可具有30%或大於30%的透光率。In one embodiment, the polarizing plate may have a light transmittance of 30% or more at a wavelength of 950 nm in the non-display area where the light shielding layer is provided.
在一個實施例中，所述偏光板在設置有所述光屏蔽層的所述非顯示區中在可見光譜中可具有2.0或大於2.0的OD值。In one embodiment, the polarizing plate may have an OD value of 2.0 or greater in the visible spectrum in the non-display area where the light shielding layer is provided.
在一個實施例中，所述有機染料可由式1、式2及式3中的至少一者表示：
>式1>
在一個實施例中，R可各自獨立地為乙烯基，R1 各自獨立地為H+ 、Na+ 、K+ 、NH4 + 、(R5 )4 N+ 、(R5 )3 NH+ 或(R5 )2 NH2 + ，其中R5 為C1 至C10 烷基。In one embodiment, R may each independently be a vinyl group, and R 1 may each independently be H + , Na + , K + , NH 4 + , (R 5 ) 4 N + , (R 5 ) 3 NH + or (R 5 ) 2 NH 2 + , wherein R 5 is a C 1 to C 10 alkyl group.
在一個實施例中，所述有機染料或其所述兩性離子化合物可以30重量%（wt%）至80重量%的量存在於所述光屏蔽層中。In one embodiment, the organic dye or the zwitterionic compound may be present in the light shielding layer in an amount of 30% by weight (wt%) to 80% by weight.
在一個實施例中，所述光屏蔽層可更包含選自碳黑以及銀-錫合金的混合顏料的至少一種顏料。In one embodiment, the light shielding layer may further include at least one pigment selected from carbon black and mixed pigments of silver-tin alloy.
在一個實施例中，所述光屏蔽層可包含30重量%至80重量%的所述有機染料或其所述兩性離子化合物與所述顏料的混合物。In one embodiment, the light shielding layer may include 30% to 80% by weight of the organic dye or a mixture of the zwitterionic compound and the pigment.
在一個實施例中，所述有機染料或其所述兩性離子化合物可以10重量%至50重量%的量存在於所述光屏蔽層中，且所述顏料可以10重量%至50重量%的量存在於所述光屏蔽層中。In one embodiment, the organic dye or the zwitterionic compound may be present in the light shielding layer in an amount of 10% to 50% by weight, and the pigment may be in an amount of 10% to 50% by weight Exist in the light shielding layer.
在一個實施例中，所述光屏蔽層可由可光固化或熱固性的光屏蔽層組成物形成，可光固化或熱固性的所述光屏蔽層組成物包含所述有機染料或其所述兩性離子化合物。In one embodiment, the light-shielding layer may be formed of a photo-curable or thermosetting light-shielding layer composition, and the photo-curable or thermosetting light-shielding layer composition includes the organic dye or the zwitterionic compound thereof .
在一個實施例中，所述光屏蔽層組成物可更包含黏結劑樹脂及引發劑。In one embodiment, the light shielding layer composition may further include a binder resin and an initiator.
在一個實施例中，所述光屏蔽層組成物可更包含選自由反應性不飽和化合物、溶劑及添加劑構成的群組的至少一者。In one embodiment, the light shielding layer composition may further include at least one selected from the group consisting of reactive unsaturated compounds, solvents, and additives.
在一個實施例中，所述光屏蔽層可由彼此分離的印刷圖案構成。In one embodiment, the light shielding layer may be composed of printed patterns separated from each other.
在一個實施例中，所述光屏蔽層可具有介於所述結合層的厚度的50%至100%範圍內的厚度。In one embodiment, the light shielding layer may have a thickness ranging from 50% to 100% of the thickness of the bonding layer.
在一個實施例中，所述偏光板可更包括：第二偏光器保護膜，形成於所述偏光器的下表面上。In one embodiment, the polarizing plate may further include: a second polarizer protective film formed on the lower surface of the polarizer.
根據本發明的另一態樣，提供一種光學顯示器，所述光學顯示器包含根據本發明的偏光板的光學顯示器。According to another aspect of the present invention, there is provided an optical display including the polarizing plate according to the present invention.
本發明提供一種偏光板，所述偏光板包括光屏蔽層，所述光屏蔽層在IR光譜中具有良好的光屏蔽性質及良好的透光率，以使得能夠在將偏光板結合至面板之後，藉由改善在切割時對對準標記的辨識來有效地切割偏光板。The present invention provides a polarizing plate that includes a light shielding layer that has good light shielding properties and good light transmittance in the IR spectrum, so that after the polarizing plate is combined to a panel, By improving the recognition of the alignment mark during cutting, the polarizing plate can be cut effectively.
本發明提供一種偏光板，所述偏光板包括對偏光器保護膜表現出良好黏合的光屏蔽層。The present invention provides a polarizing plate including a light shielding layer that exhibits good adhesion to a polarizer protective film.
本發明提供一種偏光板，所述偏光板包括對所述偏光板的偏光器及結合層表現出良好黏合的光屏蔽層。The present invention provides a polarizing plate. The polarizing plate includes a light shielding layer that exhibits good adhesion to the polarizer and the bonding layer of the polarizing plate.
本發明提供一種具有良好可靠性及耐久性的偏光板。The present invention provides a polarizing plate with good reliability and durability.
將參照附圖來詳細闡述本發明的實施例，進而使得熟習此項技術者可容易地實施本發明。應理解，本發明可以不同方式來實施，而並非限於以下實施例。在圖式中，為清晰起見將省略與本說明無關的部分。在說明書通篇中，相同組件將由相同參考編號來標示。The embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the present invention. It should be understood that the present invention can be implemented in different ways and is not limited to the following embodiments. In the drawings, parts irrelevant to this description will be omitted for clarity. Throughout the specification, the same components will be designated by the same reference numbers.
在本文中，例如「上部」及「下部」等空間相對性用語是參照附圖來定義。因此，將理解，用語「上表面」可與用語「下表面」互換使用，且當稱例如層或膜等元件放置於另一元件「上」時，所述元件可直接放置於所述另一元件上，或者可存在中間元件。另一方面，當稱元件「直接」放置於另一元件「上」時，則其間不存在中間元件。In this article, spatially relative terms such as "upper" and "lower" are defined with reference to the accompanying drawings. Therefore, it will be understood that the term "upper surface" can be used interchangeably with the term "lower surface", and when it is said that an element such as a layer or film is placed "on" another element, the element can be placed directly on the other element. On the element, or there may be intermediate elements. On the other hand, when a component is said to be placed “directly” on another component, there is no intermediate component in between.
根據本發明的偏光板可由顯示區及環繞顯示區的外周邊的非顯示區構成。偏光板可包括：偏光器；以及結合層及第一偏光器保護膜，依序堆疊於偏光器的上表面上。偏光板更包括光屏蔽層。光屏蔽層構成非顯示區的至少部分，且形成於第一偏光器保護膜的下表面上以嵌置於結合層中，進而使得偏光器、光屏蔽層、結合層及第一偏光器保護膜彼此一體地形成。在根據本發明的偏光板中，光屏蔽層形成於結合層中，藉此能夠使光學顯示器的厚度減小。The polarizing plate according to the present invention may be composed of a display area and a non-display area surrounding the outer periphery of the display area. The polarizing plate may include: a polarizer; and a bonding layer and a first polarizer protective film, which are sequentially stacked on the upper surface of the polarizer. The polarizing plate further includes a light shielding layer. The light shielding layer constitutes at least part of the non-display area, and is formed on the lower surface of the first polarizer protective film to be embedded in the bonding layer, thereby making the polarizer, the light shielding layer, the bonding layer, and the first polarizer protective film Formed integrally with each other. In the polarizing plate according to the present invention, the light shielding layer is formed in the bonding layer, whereby the thickness of the optical display can be reduced.
偏光板在設置有光屏蔽層的非顯示區中在950奈米的波長下可具有30%或大於30%的透光率。在此透光率範圍內，可在將偏光板結合至面板之後，藉由改善在切割時對對準標記的辨識來有效地切割偏光板。偏光板在設置有光屏蔽層的非顯示區中在可見光譜中可具有2.0或大於2.0的OD值。在此OD值範圍內，光屏蔽層可充當非顯示區。The polarizing plate may have a light transmittance of 30% or more at a wavelength of 950 nm in the non-display area where the light shielding layer is provided. Within this range of light transmittance, after the polarizing plate is combined with the panel, the polarizing plate can be effectively cut by improving the recognition of the alignment mark during cutting. The polarizing plate may have an OD value of 2.0 or more in the visible spectrum in the non-display area provided with the light shielding layer. Within this OD value range, the light shielding layer can serve as a non-display area.
較佳地，偏光板在設置有光屏蔽層的非顯示區中在950奈米的波長下具有30%至80%的透光率，更佳地為30%至70%。Preferably, the polarizing plate has a light transmittance of 30% to 80%, more preferably 30% to 70%, at a wavelength of 950 nm in the non-display area where the light shielding layer is provided.
較佳地，偏光板在設置有光屏蔽層的非顯示區中在可見光譜中具有2.0至4.0的OD值，更佳地為2.0至3.0。在此範圍內，偏光板可容易地達到能夠改善在950奈米的波長下對對準標記的識別的透光率值以及能夠提供光屏蔽效果的OD值。舉例而言，偏光板可具有為2.0、2.1、2.2、2.3、2.4、2.5、2.6、2.7、2.8、2.9、3.0、3.1、3.2、3.3、3.4、3.5、3.6、3.7、3.8、3.9或4.0的OD值。Preferably, the polarizing plate has an OD value of 2.0 to 4.0 in the visible spectrum in the non-display area provided with the light shielding layer, more preferably 2.0 to 3.0. Within this range, the polarizing plate can easily achieve a light transmittance value that can improve the recognition of the alignment mark at a wavelength of 950 nm and an OD value that can provide a light shielding effect. For example, the polarizing plate may have a value of 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9 or 4.0 OD value.
基於對配置光屏蔽層以提供一種能夠確保在950奈米的波長下的透光率及在以上範圍內的光屏蔽層的OD值、同時確保光屏蔽層對第一偏光器保護膜、偏光器及結合層的黏合的偏光板的研究，本發明的發明者確認，含有下文所述特定染料的光屏蔽層提供本發明的有益效果。在根據本發明的偏光板中，光屏蔽層不僅對第一偏光器保護膜而且對偏光器及結合層表現出良好的黏合，藉此提高可靠性及耐久性。Based on the configuration of the light shielding layer to provide a way to ensure the transmittance at a wavelength of 950 nm and the OD value of the light shielding layer within the above range, while ensuring that the light shielding layer protects the first polarizer and the polarizer. The inventors of the present invention confirmed that the light-shielding layer containing the specific dye described below provides the beneficial effects of the present invention. In the polarizing plate according to the present invention, the light shielding layer exhibits good adhesion not only to the first polarizer protective film but also to the polarizer and the bonding layer, thereby improving reliability and durability.
接下來，將參照圖1及圖2來詳細闡述根據本發明一個實施例的偏光板。圖1是根據本發明一個實施例的偏光板的平面圖，且圖2是沿圖1所示的線I-II截取的剖視圖。Next, a polarizing plate according to an embodiment of the present invention will be explained in detail with reference to FIGS. 1 and 2. FIG. 1 is a plan view of a polarizing plate according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line I-II shown in FIG. 1.
參照圖1，偏光板10可由以下構成：顯示區S1；以及非顯示區S2，環繞顯示區S1的周邊。顯示區S1是透光區，且非顯示區S2是非透射區。顯示區S1與非顯示區S2一體地形成。1, the
儘管圖1中未示出，然而非顯示區S2由光屏蔽層構成。光屏蔽層可由光屏蔽層組成物形成，所述光屏蔽層組成物含有下文所述的染料。下文將詳細闡述光屏蔽層組成物。Although not shown in FIG. 1, the non-display area S2 is composed of a light shielding layer. The light-shielding layer may be formed of a light-shielding layer composition containing the dye described below. The light shielding layer composition will be described in detail below.
參照圖1，非顯示區S2形成為環繞顯示區S1的整個周邊，但並非僅限於此。作為另一選擇，非顯示區可僅設置於顯示區的相對兩側處、僅設置於顯示區的左側處、僅設置於顯示區的右側處、僅設置於顯示區的上側處或僅設置於顯示區的下側處。1, the non-display area S2 is formed to surround the entire periphery of the display area S1, but it is not limited to this. As another option, the non-display area may be provided only at opposite sides of the display area, only at the left side of the display area, only at the right side of the display area, only at the upper side of the display area, or only at the upper side of the display area. At the bottom of the display area.
參照圖2，在偏光板10中，結合層310及第一偏光器保護膜200依序形成於偏光器100的上表面上，且第二偏光器保護膜400形成於偏光器100的下表面上。2, in the
偏光板可為光學顯示器的觀看者側偏光板。因此，結合層310及第一偏光器保護膜200依序形成於偏光器100的光出射表面上。然而，應理解，本發明並非僅限於此。The polarizing plate may be a viewer-side polarizing plate of the optical display. Therefore, the
光屏蔽層320形成於第一偏光器保護膜200的下表面上，以嵌置於結合層310中。光屏蔽層320形成為直接鄰接第一偏光器保護膜200的下表面以及結合層310。如圖2中所示，光屏蔽層320形成為環繞結合層310的周邊。在將根據本發明的偏光板安裝於光學顯示器上時，光屏蔽層320可構成非顯示區S2的至少部分，較佳地構成非顯示區的整體。The
光屏蔽層320形成於偏光器100的光出射表面上。因此，可在偏光板的不形成光屏蔽層320的區中達成顯示功能。作為另一選擇，光屏蔽層320可形成於偏光器100的光入射表面上。The
偏光板10在設置有光屏蔽層的非顯示區中在950奈米的波長下可具有30%或大於30%的透光率。另外，偏光板10在設置有光屏蔽層的非顯示區中在可見光譜中可具有2.0或大於2.0的OD值。在此透光率範圍內，偏光板使得能夠在將偏光板結合至面板之後，藉由改善在切割時對對準標記的辨識來有效地切割。在以上OD值範圍內，光屏蔽層可充當非顯示區。較佳地，偏光板在設置有光屏蔽層的非顯示區中在可見光譜中在950奈米的波長下具有30%至80%的透光率，更佳地為30%至70%。較佳地，偏光板10在設置有光屏蔽層的非顯示區中在可見光譜中具有2.0至4.0的OD值，更佳地為2.0至3.0。在此範圍內，偏光板可容易地達到能夠改善在950奈米的波長下對對準標記的識別的透光率值以及能夠提供光屏蔽效果的OD值。舉例而言，偏光板可具有為2.0、2.1、2.2、2.3、2.4、2.5、2.6、2.7、2.8、2.9、3.0、3.1、3.2、3.3、3.4、3.5、3.6、3.7、3.8、3.9或4.0的OD值。The
光屏蔽層320對第一偏光器保護膜200表現出良好的黏合。利用光屏蔽層的該些性質，偏光板可達成可靠性及耐久性方面的提高。光屏蔽層320亦對偏光器100及結合層310表現出良好的黏合。利用光屏蔽層的該些性質，偏光板可達成可靠性及耐久性方面的提高。The
所述光屏蔽層可包含選自由三伸苯基銨系染料及四伸苯基銨系染料構成的群組的至少一種有機染料或者其兩性離子化合物。對於由如下所述彼此分離的印刷圖案構成的光屏蔽層，有機染料使得光屏蔽層能夠在950奈米的波長下具有透光率且具有在以上範圍內的光屏蔽層的OD值，且可確保光屏蔽層對第一偏光器保護膜、偏光器及結合層的良好黏合。The light shielding layer may include at least one organic dye selected from the group consisting of triphenylammonium-based dyes and tetraphenylammonium-based dyes, or zwitterionic compounds thereof. For the light-shielding layer composed of printed patterns separated from each other as described below, the organic dye enables the light-shielding layer to have a light transmittance at a wavelength of 950 nm and an OD value of the light-shielding layer within the above range, and can Ensure good adhesion of the light shielding layer to the first polarizer protective film, polarizer and bonding layer.
在一個實施例中，光屏蔽層可包含由式1、式2及式3中的至少一者表示的有機染料或者其兩性離子化合物：
>式1>
較佳地，R各自獨立地為乙烯基。Preferably, R is each independently a vinyl group.
較佳地，R1 各自獨立地為Na+ 、K+ 、NH4 + 、(R5 )4 N+ 、(R5 )3 NH+ 或(R5 )2 NH2 + 。此處，R5 為C1 至C10 烷基。Preferably, each of R 1 is independently Na + , K + , NH 4 + , (R 5 ) 4 N + , (R 5 ) 3 NH + or (R 5 ) 2 NH 2 + . Here, R 5 is a C 1 to C 10 alkyl group.
式1所示兩性離子化合物可由式1-1表示：
>式1-1>
式2所示兩性離子化合物可由式2-1表示：
>式2-1>
式3所示兩性離子化合物可由式3-1表示：
>式3-1>
利用包括上述染料的光屏蔽層，偏光板在設置有光屏蔽層的非顯示區中在950奈米的波長下可具有30%或大於30%的透光率且具有2.0或大於2.0的OD值，且可確保光屏蔽層對第一偏光器保護膜、偏光器及結合層的良好黏合。染料可藉由此項技術中眾所習知的典型方法製備，或者可選自可商業購得的產品（例如，幽靈TM （SpectreTM ）130、幽靈TM 140、幽靈TM 150及幽靈TM 160，依普林有限公司（Epolin Co., Ltd.））。With the light shielding layer including the above-mentioned dye, the polarizing plate can have a light transmittance of 30% or more than 30% and an OD value of 2.0 or more at a wavelength of 950 nm in the non-display area provided with the light shielding layer , And can ensure good adhesion of the light shielding layer to the first polarizer protective film, polarizer and bonding layer. Dyes may be typical method in the art by the conventional preparation of all, or selected from commercially available products (e.g., ghost TM (Spectre TM) 130, ghost TM 140, TM 150 and ghost Ghost TM 160, Epolin Co., Ltd.).
在光屏蔽層中，染料可以30重量%至80重量%、較佳地為40重量%至80重量%的量存在。在此範圍內，光屏蔽層可確保光屏蔽效果，可表現出對第一偏光器保護膜、偏光器及結合層的良好黏合，且可確保在950奈米的波長下的所期望透光率。舉例而言，染料可以30重量%、31重量%、32重量%、33重量%、34重量%、35重量%、36重量%、37重量%、38重量%、39重量%、40重量%、41重量%、42重量%、43重量%、44重量%、45重量%、46重量%、47重量%、48重量%、49重量%、50重量%、51重量%、52重量%、53重量%、54重量%、55重量%、56重量%、57重量%、58重量%、59重量%、60重量%、61重量%、62重量%、63重量%、64重量%、65重量%、66重量%、67重量%、68重量%、69重量%、70重量%、71重量%、72重量%、73重量%、74重量%、75重量%、76重量%、77重量%、78重量%、79重量%或80重量%的量存在於光屏蔽層中。In the light shielding layer, the dye may be present in an amount of 30% to 80% by weight, preferably 40% to 80% by weight. In this range, the light shielding layer can ensure the light shielding effect, can exhibit good adhesion to the first polarizer protective film, polarizer and bonding layer, and can ensure the desired light transmittance at a wavelength of 950 nm . For example, the dye can be 30% by weight, 31% by weight, 32% by weight, 33% by weight, 34% by weight, 35% by weight, 36% by weight, 37% by weight, 38% by weight, 39% by weight, 40% by weight, 41% by weight, 42% by weight, 43% by weight, 44% by weight, 45% by weight, 46% by weight, 47% by weight, 48% by weight, 49% by weight, 50% by weight, 51% by weight, 52% by weight, 53% by weight %, 54% by weight, 55% by weight, 56% by weight, 57% by weight, 58% by weight, 59% by weight, 60% by weight, 61% by weight, 62% by weight, 63% by weight, 64% by weight, 65% by weight, 66% by weight, 67% by weight, 68% by weight, 69% by weight, 70% by weight, 71% by weight, 72% by weight, 73% by weight, 74% by weight, 75% by weight, 76% by weight, 77% by weight, 78% by weight %, 79% by weight, or 80% by weight is present in the light shielding layer.
光屏蔽層可包含包括染料的光屏蔽層組成物，或者可由包括染料的光屏蔽層組成物形成。The light shielding layer may include a light shielding layer composition including a dye, or may be formed of a light shielding layer composition including a dye.
在一個實施例中，光屏蔽層組成物可包括：由式1、式2及式3中的至少一者表示的至少一種染料或者其兩性離子化合物；黏結劑樹脂；以及引發劑。就固體含量而言，由式1、式2及式3中的至少一者表示的所述至少一種染料或者其兩性離子化合物可以30重量%至80重量%、較佳地以40重量%至80重量%的量存在於光屏蔽層組成物中。在此範圍內，光屏蔽層可確保光屏蔽效果，可表現出對第一偏光器保護膜的良好黏合，且可確保在950奈米的波長下的所期望透光率。舉例而言，染料或其兩性離子化合物可以30重量%、31重量%、32重量%、33重量%、34重量%、35重量%、36重量%、37重量%、38重量%、39重量%、40重量%、41重量%、42重量%、43重量%、44重量%、45重量%、46重量%、47重量%、48重量%、49重量%、50重量%、51重量%、52重量%、53重量%、54重量%、55重量%、56重量%、57重量%、58重量%、59重量%、60重量%、61重量%、62重量%、63重量%、64重量%、65重量%、66重量%、67重量%、68重量%、69重量%、70重量%、71重量%、72重量%、73重量%、74重量%、75重量%、76重量%、77重量%、78重量%、79重量%或80重量%的量存在。In one embodiment, the light-shielding layer composition may include: at least one dye represented by at least one of
黏結劑樹脂可包括丙烯酸樹脂、聚醯亞胺樹脂、聚胺基甲酸酯（polyurethane）樹脂或其組合。丙烯酸樹脂的實例可包括甲基丙烯酸/甲基丙烯酸芐酯（methacrylic acid/benzyl methacrylate）共聚物、甲基丙烯酸/甲基丙烯酸芐酯/苯乙烯共聚物、甲基丙烯酸/甲基丙烯酸芐酯/甲基丙烯酸2-羥乙酯（2-hydroxyethyl methacrylate）共聚物、甲基丙烯酸/甲基丙烯酸芐酯/苯乙烯/甲基丙烯酸2-羥乙酯共聚物等。聚胺基甲酸酯樹脂可為脂族（aliphatic）聚胺基甲酸酯樹脂。丙烯酸樹脂可為丙烯酸壓敏（pressure-sensitive）黏合劑樹脂。應理解，本發明並非僅限於此。The binder resin may include acrylic resin, polyimide resin, polyurethane resin, or a combination thereof. Examples of acrylic resins may include methacrylic acid/benzyl methacrylate (methacrylic acid/benzyl methacrylate) copolymer, methacrylic acid/benzyl methacrylate/styrene copolymer, methacrylic acid/benzyl methacrylate/ 2-hydroxyethyl methacrylate copolymer, methacrylic acid/benzyl methacrylate/styrene/2-hydroxyethyl methacrylate copolymer, etc. The polyurethane resin may be an aliphatic polyurethane resin. The acrylic resin may be an acrylic pressure-sensitive adhesive resin. It should be understood that the present invention is not limited to this.
反應性不飽和化合物可包括選自由重量平均分子量低於黏結劑樹脂的光可固化不飽和化合物及熱固性不飽和化合物構成的群組的至少一者。反應性不飽和化合物的實例可包括乙二醇二丙烯酸酯（ethylene glycol diacrylate）、乙二醇二甲基丙烯酸酯（ethylene glycol dimethacrylate）、二乙二醇二丙烯酸酯、三乙二醇二丙烯酸酯、三乙二醇二甲基丙烯酸酯、1,6-己二醇二丙烯酸酯、1,6-己二醇二甲基丙烯酸酯、新戊四醇三(甲基)丙烯酸酯（pentaerythritol tri(meth)acrylate）、新戊四醇四(甲基)丙烯酸酯、二新戊四醇五(甲基)丙烯酸酯、二新戊四醇六(甲基)丙烯酸酯、雙酚A環氧(甲基)丙烯酸酯（bisphenol A epoxy (meth)acrylate）、乙二醇單甲醚(甲基)丙烯酸酯（ethylene glycol monomethylether (meth)acrylate）、三羥甲基丙烷三(甲基)丙烯酸酯（trimethylolpropane tri(meth)acrylate）及三(甲基)丙烯醯氧基乙基磷酸酯（tris(meth)acryloyloxyethyl phosphate），但並非僅限於此。The reactive unsaturated compound may include at least one selected from the group consisting of a photocurable unsaturated compound having a weight average molecular weight lower than that of the binder resin and a thermosetting unsaturated compound. Examples of the reactive unsaturated compound may include ethylene glycol diacrylate, ethylene glycol dimethacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate , Triethylene glycol dimethacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimethacrylate, pentaerythritol tri(meth)acrylate (pentaerythritol tri( meth)acrylate), neopentyl erythritol tetra (meth) acrylate, dineopentaerythritol penta (meth) acrylate, dineopentaerythritol hexa (meth) acrylate, bisphenol A epoxy (meth) Bisphenol A epoxy (meth)acrylate, ethylene glycol monomethylether (meth)acrylate, trimethylolpropane tri(meth)acrylate and tris(meth)acryloyloxyethyl phosphate (tris(meth)acryloyloxyethyl phosphate), but not limited to these.
起始劑可包括選自由光聚合起始劑及熱固性起始劑構成的群組的至少一者。光聚合起始劑的實例可包括苯乙酮（acetophenone）化合物、二苯甲酮（benzophenone）化合物、噻噸酮（thioxanthone）化合物、安息香（benzoin）化合物、三嗪（triazine）化合物及嗎啉（morpholine）化合物，但並非僅限於此。熱固性起始劑可包括選自由以下組成的群組的至少一者：醯肼（hydrazide）化合物，例如1,3-雙(肼基甲醯乙基-5-異丙基乙內醯脲)（1,3-bis(hydrazinocarbonoethyl-5-isopropyl hydantoin)）；咪唑化合物，例如1-氰基乙基-2-苯基咪唑、N-[2-(2-甲基-1-咪唑基)乙基]脲、2,4-二胺基-6-[2'-甲基咪唑基-(1')]-乙基-s-三嗪、N,N'-雙(2-甲基-1-咪唑基乙基)脲、N,N'-(2-甲基-1-咪唑基乙基)-己二醯胺、2-苯基-4-甲基-5-羥甲基咪唑及2-苯基-4,5-二羥甲基咪唑；酸酐化合物，例如四氫鄰苯二甲酸酐（tetrahydrophthalic anhydride）及乙二醇-雙(無水偏苯三酸酯)（ethylene glycol-bis(anhydrotrimellitate)）；三聚氰胺化合物；胍類（guanidine）化合物；二氰二胺（dicyandiamide）化合物；以及改質的脂族多胺（modified aliphatic polyamine）化合物。The initiator may include at least one selected from the group consisting of a photopolymerization initiator and a thermosetting initiator. Examples of the photopolymerization initiator may include acetophenone compounds, benzophenone compounds, thioxanthone compounds, benzoin compounds, triazine compounds, and morpholine ( morpholine) compound, but not limited to this. The thermosetting initiator may include at least one selected from the group consisting of: hydrazide compounds, such as 1,3-bis(hydrazinomethylethyl-5-isopropylhydantoin) ( 1,3-bis(hydrazinocarbonoethyl-5-isopropyl hydantoin)); imidazole compounds, such as 1-cyanoethyl-2-phenylimidazole, N-[2-(2-methyl-1-imidazolyl)ethyl ] Urea, 2,4-diamino-6-[2'-methylimidazolyl-(1')]-ethyl-s-triazine, N,N'-bis(2-methyl-1- Imidazolylethyl)urea, N,N'-(2-methyl-1-imidazolylethyl)-hexamethylene diamide, 2-phenyl-4-methyl-5-hydroxymethylimidazole and 2- Phenyl-4,5-dimethylolimidazole; anhydride compounds such as tetrahydrophthalic anhydride and ethylene glycol-bis(anhydrotrimellitate) ); melamine compounds; guanidine compounds; dicyandiamide compounds; and modified aliphatic polyamine compounds.
溶劑的實例可包括二醇醚，例如乙二醇甲醚、乙二醇***、丙二醇甲醚等；溶纖劑乙酸酯（cellosolve acetate），例如甲基溶纖劑乙酸酯、乙基溶纖劑乙酸酯、二乙基溶纖劑乙酸酯等；卡必醇（carbitol），例如甲基乙基卡必醇、二乙基卡必醇、二乙二醇單甲醚（diethylene glycol monomethylether）、二乙二醇單***、二乙二醇二甲醚、二乙二醇甲***、二乙二醇二***等；丙二醇烷基醚乙酸酯（propylene glycol alkyl ether acetate），例如丙二醇甲醚乙酸酯（propylene glycol methyl ether acetate）、丙二醇丙醚乙酸酯等，但並非僅限於此。Examples of solvents may include glycol ethers, such as ethylene glycol methyl ether, ethylene glycol ethyl ether, propylene glycol methyl ether, etc.; cellosolve acetate (cellosolve acetate), such as methyl cellosolve acetate, ethyl solvent Cellulose acetate, diethyl cellosolve acetate, etc.; carbitol, such as methyl ethyl carbitol, diethyl carbitol, diethylene glycol monomethyl ether (diethylene glycol monomethylether), diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether, diethylene glycol diethyl ether, etc.; propylene glycol alkyl ether acetate (propylene glycol alkyl ether acetate), such as propylene glycol But not limited to propylene glycol methyl ether acetate, propylene glycol propyl ether acetate, etc.
在一個實施例中，光屏蔽層組成物可包括：1重量%至50重量%的由式1、式2及式3中的至少一者表示的染料或者其兩性離子化合物、0.5重量%至20重量%的黏結劑樹脂、0.1重量%至10重量%的引發劑，且其餘為溶劑。在此範圍內，組成物可形成薄的光屏蔽層，同時確保其良好的光屏蔽效果。In one embodiment, the light shielding layer composition may include: 1% to 50% by weight of the dye represented by at least one of
在另一實施例中，光屏蔽層組成物可包括：1重量%至50重量%的由式1、式2及式3中的至少一者表示的染料或者其兩性離子化合物、0.5重量%至20重量%的黏結劑樹脂、1重量%至20重量%的反應性不飽和化合物、0.1重量%至10重量%的引發劑，且其餘為溶劑。在此範圍內，組成物可形成薄的光屏蔽層，同時確保其良好的光屏蔽效果。In another embodiment, the light-shielding layer composition may include: 1% to 50% by weight of the dye represented by at least one of
光屏蔽層組成物可更包含0.1重量%至1重量%的其他添加劑（例如，矽烷耦合劑）以幫助對光屏蔽層的紫外線（ultra violet，UV）固化。The light-shielding layer composition may further contain 0.1% to 1% by weight of other additives (for example, a silane coupling agent) to help the ultraviolet (ultra violet, UV) curing of the light-shielding layer.
在另一實施例中，光屏蔽層組成物可包括：由式1、式2及式3中的至少一者表示的有機染料或者其兩性離子化合物（在下文中稱為染料）；選自由碳黑以及銀-錫合金的混合顏料構成的群組的至少一種無機顏料（在下文中稱為顏料）；黏結劑樹脂；以及引發劑。利用染料與顏料的混合物，光屏蔽層組成物可具有高的OD值，以在改善黏合強度的同時提供更佳的光屏蔽效果。碳黑的實例可包括石墨、爐黑、乙炔黑及科琴黑（Ketjen black），但並非僅限於此。顏料可以顏料分散體（pigment dispersion）的形式存在，但並非僅限於此。所述光屏蔽層組成物可更包含選自由反應性不飽和化合物、溶劑及添加劑構成的群組的至少一者。In another embodiment, the light shielding layer composition may include: an organic dye represented by at least one of
在染料與顏料的混合物中，所述染料可以20重量%至90重量%的量存在，且所述顏料可以10重量%至80重量%的量存在。在此範圍內，光屏蔽層可表現出光屏蔽效果以及對第一偏光器保護膜的良好黏合，且可確保在950奈米的波長下的所期望透光率。較佳地，所述染料以50重量%至90重量%的量存在，且所述顏料以10重量%至50重量%的量存在。更佳地，所述染料以55重量%至90重量%的量存在，且所述顏料以10重量%至45重量%的量存在。此處，就固體含量而言，染料與顏料的混合物可以30重量%至80重量%、較佳地以40重量%至80重量%的量存在於光屏蔽層組成物中。在此範圍內，光屏蔽層可表現出光屏蔽效果以及對第一偏光器保護膜的良好黏合，且可確保在950奈米的波長下的所期望透光率。In the mixture of dye and pigment, the dye may be present in an amount of 20% to 90% by weight, and the pigment may be present in an amount of 10% to 80% by weight. Within this range, the light shielding layer can exhibit a light shielding effect and a good adhesion to the first polarizer protective film, and can ensure a desired light transmittance at a wavelength of 950 nm. Preferably, the dye is present in an amount of 50% to 90% by weight, and the pigment is present in an amount of 10% to 50% by weight. More preferably, the dye is present in an amount of 55% to 90% by weight, and the pigment is present in an amount of 10% to 45% by weight. Here, in terms of solid content, the mixture of dye and pigment may be present in the light shielding layer composition in an amount of 30% to 80% by weight, preferably 40% to 80% by weight. Within this range, the light shielding layer can exhibit a light shielding effect and a good adhesion to the first polarizer protective film, and can ensure a desired light transmittance at a wavelength of 950 nm.
在包含染料與顏料的混合物的光屏蔽層中，所述染料可以10重量%至50重量%、較佳地以30重量%至50重量%的量存在，且所述顏料可以10重量%至50重量%、較佳地以20重量%至40重量%的量存在。在此範圍內，光屏蔽層可表現出光屏蔽效果以及對第一偏光器保護膜的良好黏合，且可確保在950奈米的波長下的所期望透光率。In the light-shielding layer comprising a mixture of dye and pigment, the dye may be present in an amount of 10% to 50% by weight, preferably 30% to 50% by weight, and the pigment may be present in an amount of 10% to 50% by weight. % By weight, preferably present in an amount of 20% to 40% by weight. Within this range, the light shielding layer can exhibit a light shielding effect and a good adhesion to the first polarizer protective film, and can ensure a desired light transmittance at a wavelength of 950 nm.
黏結劑樹脂、引發劑、反應性不飽和化合物、溶劑及添加劑的細節與上述相同。The details of the binder resin, initiator, reactive unsaturated compound, solvent, and additives are the same as above.
在一個實施例中，光屏蔽層組成物可包括：1重量%至50重量%的染料與顏料的混合物、0.5重量%至20重量%的黏結劑樹脂、0.1重量%至10重量%的引發劑，且其餘為溶劑。在此範圍內，組成物可形成薄的光屏蔽層，同時確保良好的光屏蔽效果。In one embodiment, the light shielding layer composition may include: 1% to 50% by weight of a mixture of dyes and pigments, 0.5% to 20% by weight of binder resin, and 0.1% to 10% by weight of initiator , And the rest is solvent. Within this range, the composition can form a thin light shielding layer while ensuring a good light shielding effect.
在另一實施例中，光屏蔽層組成物可包括：1重量%至50重量%的染料與顏料的混合物、0.5重量%至20重量%的黏結劑樹脂、1重量%至20重量%的反應性不飽和化合物、0.1重量%至10重量%的引發劑，且其餘為溶劑。在此範圍內，組成物可形成薄的光屏蔽層，同時確保其良好的光屏蔽效果。In another embodiment, the light shielding layer composition may include: 1% to 50% by weight of a mixture of dye and pigment, 0.5% to 20% by weight of binder resin, 1% to 20% by weight of reaction Sexually unsaturated compound, 0.1% to 10% by weight of initiator, and the remainder is solvent. Within this range, the composition can form a thin light shielding layer while ensuring its good light shielding effect.
光屏蔽層組成物可更包含0.1重量%至1重量%的其他添加劑（例如，矽烷耦合劑）以幫助對光屏蔽層的UV固化。The light-shielding layer composition may further contain 0.1% to 1% by weight of other additives (for example, silane coupling agent) to help UV curing the light-shielding layer.
光屏蔽層320的厚度可小於或相同於結合層310的厚度。光屏蔽層320可具有介於結合層310的厚度的50%至100%範圍內的厚度。在此範圍內，光屏蔽層可嵌置於結合層中，且可確保偏光板的厚度的減小。舉例而言，光屏蔽層320可具有為0.1微米至4微米、較佳地為1.0微米至4.0微米的厚度。在此範圍內，光屏蔽層可嵌置於結合層中，且可確保偏光板的光屏蔽效果以及厚度的減小。The thickness of the
光屏蔽層320由彼此分離的印刷圖案構成。將參照圖3來詳細闡述印刷圖案。The
參照圖3，當一個印刷圖案320'鄰接顯示區S1與非顯示區S2之間的介面的點是由點a表示且直接相鄰於320'的另一印刷圖案320'鄰接顯示區S1與非顯示區S2之間的介面（或邊界線）的點是由點b表示時，點a與點b之間的距離是由W表示。當印刷圖案320'的最靠近點a的點是由點c表示且印刷圖案320'的最靠近點b的點是由點d表示時，自顯示區S1與非顯示區S2之間的介面至點c的距離以及自顯示區S1與非顯示區S2之間的介面至點d的距離中的最小值是由H表示。此處，H可為200微米或小於200微米，例如0.1微米至200微米或5微米至200微米。在H的此範圍內，光屏蔽層可確保光屏蔽效果，且顯示區與非顯示區之間的均勻性可得到改善，以在防止畫素中的紅綠藍（red, green, blue，RGB）在光學顯示器運作時為可見的同時減小顯示區S1與非顯示區S2之間的可見性差異（visibility difference）。在一實施例中，印刷圖案可滿足關係1： [關係1] 0.1 × W ≤ H ≤ 0.5 × W。3, when a printed pattern 320' is adjacent to the point of the interface between the display area S1 and the non-display area S2 is represented by point a and is directly adjacent to 320', another printed pattern 320' is adjacent to the display area S1 and non-display area S1. When the point of the interface (or boundary line) between the display areas S2 is represented by the point b, the distance between the point a and the point b is represented by W. When the point closest to point a of the printed pattern 320' is represented by point c and the point closest to point b of the printed pattern 320' is represented by point d, from the interface between the display area S1 and the non-display area S2 to The minimum of the distance from the point c and the distance from the interface between the display area S1 and the non-display area S2 to the point d is represented by H. Here, H may be 200 micrometers or less than 200 micrometers, such as 0.1 micrometers to 200 micrometers or 5 micrometers to 200 micrometers. In this range of H, the light shielding layer can ensure the light shielding effect, and the uniformity between the display area and the non-display area can be improved to prevent red, green, blue, RGB in the pixel ) While the optical display is visible during operation, the visibility difference between the display area S1 and the non-display area S2 is reduced. In an embodiment, the printed pattern may satisfy relation 1: [Relationship 1] 0.1 × W ≤ H ≤ 0.5 × W.
其中關係1被設定成確保顯示區與非顯示區之間的介面處的均勻性，以確保直接鄰接顯示區與非顯示區之間的介面的印刷圖案的均勻性。W可介於10微米至500微米範圍內，例如10微米至490微米。舉例而言，W可大於H（W > H）。The
本文中所使用的「顯示區與非顯示區之間的介面」是指連接在非顯示區中形成的印刷圖案的最靠近顯示區的點的（假想）線。The "interface between the display area and the non-display area" as used herein refers to the (imaginary) line connecting the points closest to the display area of the printed pattern formed in the non-display area.
印刷圖案320'為彼此分離的。印刷圖案320'之間的分離距離T可介於1微米至50微米範圍內，例如5微米至30微米。在此範圍內，光屏蔽層320可提供光屏蔽效果而不會對均勻性產生不利影響。The printed patterns 320' are separated from each other. The separation distance T between the printed patterns 320' may be in the range of 1 micrometer to 50 micrometers, for example, 5 micrometers to 30 micrometers. Within this range, the
印刷圖案320'的最大長軸320'L可具有為50微米至600微米的長度，例如100微米至500微米。The largest long axis 320'L of the printing pattern 320' may have a length of 50 to 600 microns, for example, 100 to 500 microns.
參照圖3，印刷圖案320'在平面方向上具有正六邊形橫截面形狀。然而，應理解，本發明並非僅限於此。舉例而言，印刷圖案320'可具有N邊形形狀（N為3至10的整數）（例如菱形形狀、正六邊形形狀、八邊形形狀等）、圓形形狀、橢圓形形狀、無定形形狀等。構成印刷圖案320'的側可具有相同的長度或不同的長度，且可具有為10微米至400微米的長度，例如50微米至300微米。在一個實施例中，印刷圖案可在平面方向上具有菱形、正六邊形或無定形的橫截面形狀。3, the printed pattern 320' has a regular hexagonal cross-sectional shape in the plane direction. However, it should be understood that the present invention is not limited to this. For example, the printing pattern 320' may have an N-sided shape (N is an integer from 3 to 10) (for example, a rhombus shape, a regular hexagon shape, an octagon shape, etc.), a circular shape, an oval shape, and an amorphous shape. Shape etc. The sides constituting the
圖3示出包括具有相同尺寸及相同形狀的印刷圖案的光屏蔽層320。然而，應理解，印刷圖案可以不同的尺寸或以不同的形狀形成。
FIG. 3 shows the
圖3示出其中印刷圖案形成為單層的光屏蔽層320。然而，應理解，本發明並非僅限於此，且印刷圖案可形成為多層。將參照圖4來詳細闡述此種結構。
FIG. 3 shows the
光屏蔽層可藉由如下方式形成：將光屏蔽層組成物塗佈至凹版印刷輥(gravure roll)(例如，銅板)上，所述凹版印刷輥被加工成在其上具有印刷圖案；使用刮刀(doctor blade)將光屏蔽層組成物自非印刷表面移除；以及將光屏蔽層組成物轉移至第一偏光器保護膜上，然後固化所述組成物。凹版印刷輥形成有用於光屏蔽層的印刷圖案。 The light-shielding layer can be formed by applying the light-shielding layer composition to a gravure roll (for example, a copper plate) that is processed to have a printed pattern thereon; using a doctor blade (doctor blade) removing the light shielding layer composition from the non-printing surface; and transferring the light shielding layer composition to the first polarizer protective film, and then curing the composition. The gravure printing roller is formed with a printing pattern for the light shielding layer.
結合層310夾置於偏光器100與第一偏光器保護膜200之間，以將偏光器100結合至第一偏光器保護膜200。結合層310直接形成於偏光器100與第一偏光器保護膜200中的每一者上。
The
結合層310可形成於偏光器100及第一偏光器保護膜200中的每一者的至少一個表面處。亦即，偏光器100及第一偏光器保護膜200可彼此面對，且在水平剖視圖中具有實質上相同的面積。亦即，偏光器100與第一偏光器保護膜200可在水平剖視圖中彼此完全重疊。具體而言，結合層310可形成於偏光器100及第一偏光器保護膜200的至少部分上。更具體而言，結合層310可僅在偏光器100及第一偏光器保護膜200的除其周邊以外的中心處設置成島狀(island shape)。
The
結合層310將偏光器100及第一偏光器保護膜200彼此結合或耦合，且可由可光固化結合劑形成。The
結合層310可具有為2微米至5微米的厚度。在結合層310的此厚度範圍內，由於光屏蔽層320而在偏光器100與第一偏光器保護膜200之間產生的間隙可以結合層來填充，藉此提高偏光板的耐久性。亦即，結合層310可使偏光器100與第一偏光器保護膜200之間的存在光屏蔽層320的區與不存在光屏蔽層320的區之間的偏差最小化。The
第一偏光器保護膜200可形成於結合層310的一表面上，以支撐結合層310及偏光器100。第一偏光器保護膜200可為光學透明保護膜。舉例而言，第一偏光器保護膜可由選自以下中的至少一者形成：聚酯（例如聚對苯二甲酸乙二醇酯（PET）、聚對苯二甲酸丁二醇酯（polybutylene terephthalate）、聚萘二甲酸乙二醇酯（polyethylene naphthalate）及聚萘二甲酸丁二醇酯（polybutylene naphthalate））、壓克力、環烯烴聚合物（COP）、纖維素酯（例如三乙醯基纖維素（TAC））、聚乙酸乙烯酯（polyvinyl acetate）、聚氯乙烯（polyvinyl chloride，PVC）、聚降冰片烯（polynorbornene）、聚碳酸酯（polycarbonate，PC）、聚醯胺（polyamide）、聚縮醛（polyacetal）、聚苯醚（polyphenylene ether）、聚苯硫醚（polyphenylene sulfide）、聚碸（polysulfone）、聚醚碸（polyether sulfone）、聚芳酯（polyarylate）及聚醯亞胺（polyimide）。較佳地，第一偏光器保護膜200可為聚對苯二甲酸乙二醇酯（PET）膜、環烯烴聚合物（COP）膜或三乙醯基纖維素（TAC）膜。The first polarizer
第一偏光器保護膜200可具有30微米至120微米的厚度，具體而言20微米至80微米。在此厚度範圍內，第一偏光器保護膜可用於光學顯示器中。第一偏光器保護膜200可為各向同性膜（isotropic film）或延遲膜（retardation film）。各向同性膜可在550奈米的波長下具有5奈米或小於5奈米的面內延遲（in-plane retardation）（Re），如由Re = (nx – ny) × d表示，其中nx及ny分別是在500奈米的波長下在保護膜的慢軸及快軸上的折射率，且d是保護膜的厚度。延遲膜可在550奈米的波長下具有大於5奈米的面內延遲（Re），例如10奈米至15,000奈米。The first polarizer
第二偏光器保護膜400可在材料、厚度、延遲等方面具有與第一偏光器保護膜200相同的特性或不同的特性。The second polarizer
偏光器100形成於結合層310的下表面上，以使入射光偏光。偏光器100可包括偏光器。偏光器可包括熟習此項技術者所已知的典型的偏光器。偏光器100可具有為約5微米至約40微米的厚度。在此範圍內，偏光器可用於光學顯示器中。The
儘管圖2中未示出，然而偏光板可更在第二偏光器保護膜400的下表面上包括黏合劑層。儘管圖2中未示出，然而在第一偏光器保護膜200的上表面上可進一步形成功能層。所述功能層可對偏光板提供其他功能，且可提供防指紋（anti-fingerprint）功能、低反射功能、防眩（anti-glare）功能、防污染功能、防反射（anti-reflection）功能、擴散功能及折射功能中的至少一者。Although not shown in FIG. 2, the polarizing plate may further include an adhesive layer on the lower surface of the second polarizer
接下來，將參照圖4來闡述根據本發明另一實施例的偏光板。Next, a polarizing plate according to another embodiment of the present invention will be explained with reference to FIG. 4.
除根據此實施例的偏光板包括圖4所示印刷圖案而非圖3中所示印刷圖案以外，根據此實施例的偏光板與根據以上實施例的偏光板實質上相同。The polarizing plate according to this embodiment is substantially the same as the polarizing plate according to the above embodiment except that the polarizing plate according to this embodiment includes the printing pattern shown in FIG. 4 instead of the printing pattern shown in FIG. 3.
參照圖4，光屏蔽層320可包括由多個印刷圖案323構成的印刷區。光屏蔽層320的除印刷區以外的其餘區324是非印刷區。印刷圖案323為彼此分離的。印刷圖案323包括第一印刷圖案321及形成於第一印刷圖案321上（較佳地形成於第一印刷圖案321的上表面上）的第二印刷圖案322。第二印刷圖案322可直接形成於第一印刷圖案321上。第二印刷圖案322可具有與第一印刷圖案321不同的形狀。較佳地，第二印刷圖案322具有較第一印刷圖案321小的面積。4, the
當第一印刷圖案321鄰接顯示區S1與非顯示區S2之間的介面的點是由點a表示且第二印刷圖案322的最靠近顯示區S1與非顯示區S2之間的介面的點是由點a'表示時，點a與點a'之間的最短距離ΔL可為200微米或小於200微米，較佳地為0.1微米至200微米，更佳地為10微米至200微米。在ΔL的此範圍內，光屏蔽層可確保光屏蔽效果，且顯示區與非顯示區之間的均勻性可得到改善，以在防止畫素中的RGB為可見的同時減小顯示區與非顯示區之間的可見性差異。When the point of the first printed
在一個實施例中，第一印刷圖案321的最大長軸321L與第二印刷圖案322的最大長軸322L之間的長度差可為200微米或小於200微米，較佳地為0.1微米至200微米，更佳地為10微米至200微米。在此範圍內，光屏蔽層可確保光屏蔽效果，且顯示區與非顯示區之間的均勻性可得到改善，以在防止畫素中的RGB為可見的同時減小顯示區與非顯示區之間的可見性差異。第一印刷圖案321的最大長軸321L可具有50微米至600微米的長度，較佳地為100微米至500微米，且第二印刷圖案322的最大長軸322L可具有50微米至500微米的長度，較佳地為50微米至350微米。In one embodiment, the length difference between the
參照圖4，第一印刷圖案321可具有六邊形形狀，且第二印刷圖案322可具有菱形形狀。然而，應理解，本發明並非僅限於此。舉例而言，第一印刷圖案可具有N邊形形狀（N為3至10的整數）（例如八邊形形狀等）、圓形形狀、橢圓形形狀、無定形形狀等，且第二印刷圖案可具有N邊形形狀（N為3至10的整數）（例如八邊形形狀等）、圓形形狀、橢圓形形狀、無定形形狀等。構成第一印刷圖案321的側可具有相同的長度或不同的長度，且可具有為10微米至400微米的長度，較佳地為50微米至300微米。構成第二印刷圖案322的側可具有相同的長度或不同的長度，且可具有為10微米至400微米的長度，較佳地為50微米至300微米。4, the
在一個實施例中，構成第一印刷圖案321的一側的長度可與構成第二印刷圖案322的一側的長度相同或不同。較佳地，構成第一印刷圖案321的一側的長度與構成第二印刷圖案322的一側的長度相同。In one embodiment, the length of the side constituting the
在一個實施例中，第一印刷圖案321可具有正六邊形形狀並可排列成形成蜂巢結構，且第二印刷圖案322可具有菱形形狀或正方形形狀。In one embodiment, the
第二印刷圖案322可具有較第一印刷圖案321小的面積。利用此種結構，第二印刷圖案322可形成於第一印刷圖案321上。較佳地，第一印刷圖案321的面積對第二印刷圖案322的面積的比率大於1，更佳地大於100%至3,000%。在此範圍內，顯示區與非顯示區之間的均勻性可得到改善，藉此在防止畫素中的RGB為可見的同時減小顯示區與非顯示區之間的可見性差異。The
較佳地，第一印刷圖案321與第二印刷圖案322之間的交叉點的數目可為至少兩個，更佳地為三個或更多個。當交叉點的數目落於此範圍內時，光屏蔽層可確保顯示區與非顯示區之間的高均勻性，藉此在防止畫素中的R、G、B為可見的同時減小顯示區與非顯示區之間的可見性差異。Preferably, the number of intersections between the first printed
當一個第一印刷圖案321鄰接顯示區S1與非顯示區S2之間的介面的點是由點a表示且相鄰於所述一個第一印刷圖案321的另一第一印刷圖案321鄰接顯示區S1與非顯示區S2之間的介面的點是由點b表示時，點a與點b之間的距離是由W表示。當第一印刷圖案321的最靠近點a的點是由點c表示且第一印刷圖案321的最靠近點b的點是由點d表示時，自顯示區S1與非顯示區S2之間的介面至點c的距離以及自顯示區S1與非顯示區S2之間的介面至點d的距離中的最小值是由H表示。此處，H可為約200微米或小於200微米，例如約0.1微米至約200微米，較佳地為約5微米至約200微米。在H的此範圍內，光屏蔽層可確保光屏蔽效果，且顯示區與非顯示區之間的均勻性可得到改善，以在防止畫素中的RGB在光學顯示器運作時為可見的同時減小顯示區與非顯示區之間的可見性差異。When a
在一實施例中，印刷圖案可滿足關係1： [關係1] 0.1 × W ≤ H ≤ 0.5 × W。In an embodiment, the printed pattern may satisfy relation 1: [Relationship 1] 0.1 × W ≤ H ≤ 0.5 × W.
其中關係1被設定成確保顯示區與非顯示區之間的介面處的均勻性，以確保直接鄰接顯示區與非顯示區之間的介面的第一印刷圖案的均勻性。W可介於10微米至500微米範圍內，較佳地為10微米至490微米，例如10微米至480微米。舉例而言，W可大於H（W > H）。The
較佳地，第一印刷圖案具有正六邊形形狀並排列成形成蜂巢結構，且第二印刷圖案具有菱形形狀、正方形形狀或正六邊形形狀。Preferably, the first printing pattern has a regular hexagon shape and is arranged to form a honeycomb structure, and the second printing pattern has a rhombus shape, a square shape or a regular hexagon shape.
印刷圖案323為彼此分離的。印刷圖案323之間的分離距離T可介於1微米至50微米範圍內，較佳地為5微米至30微米。在此範圍內，光屏蔽層320可提供光屏蔽效果而不會對均勻性產生不利影響。The printed
本發明可提供一種包含根據上述本發明實施例的偏光板的光學顯示器。所述光學顯示器可包括液晶顯示器、有機發光二極體顯示器等。偏光板可設置於液晶顯示器的觀看者側處。The present invention can provide an optical display including the polarizing plate according to the above-mentioned embodiment of the present invention. The optical display may include a liquid crystal display, an organic light emitting diode display, and the like. The polarizing plate can be arranged at the viewer's side of the liquid crystal display.
接下來，將參照一些實例來更詳細地闡述本發明。然而，應注意，提供該些實例僅是用於說明且不應被視為以任何方式限制本發明。實例 1 Next, the present invention will be explained in more detail with reference to some examples. However, it should be noted that these examples are provided for illustration only and should not be seen as limiting the present invention in any way. Example 1
藉由混合45重量%的（A）染料（幽靈TM 130）、作為（B）黏結劑樹脂的8重量%的（B-1）脂族聚胺基甲酸酯樹脂（SUO-1000，新安T&C（Shin-A T&C））、作為（C）反應性不飽和化合物的3重量%的二季戊四醇六丙烯酸酯（韓農化學公司（Hannong Chemical Inc.））、作為（D）引發劑的3重量%的（D-1）光聚合引發劑（IGR 369）、作為溶劑的40重量%的（E）丙二醇甲醚乙酸酯以及1重量%的（F）矽烷耦合劑（迪高® （Tego® ）76）製備了光屏蔽層組成物。實例 2 至實例 6 By mixing 45% by weight of (A) dye (Ghost TM 130) and 8% by weight of (B-1) aliphatic polyurethane resin (SUO-1000, Xin'an T&C) as (B) binder resin (Shin-A T&C)), 3% by weight of dipentaerythritol hexaacrylate (Hannong Chemical Inc.) as (C) reactive unsaturated compound, 3% by weight as (D) initiator of (D-1) a photopolymerization initiator (IGR 369), as a 40% by weight of solvent (E) propylene glycol methyl ether acetate and 1% by weight of (F) Silane coupling agent (Tego ® (Tego ®) 76) The light shielding layer composition was prepared. Example 2 to Example 6
除如表1中所列改變了組成物的每一組分的種類及/或含量以外，藉由與實例1中相同的方法製備了每一光屏蔽層組成物。比較例 1 至比較例 4 Except for changing the type and/or content of each component of the composition as listed in Table 1, each light-shielding layer composition was prepared by the same method as in Example 1. Comparative example 1 to comparative example 4
除如表1中所列改變了組成物的每一組分的種類及/或含量以外，藉由與實例1中相同的方法製備了每一光屏蔽層組成物。
表1
（A-1）：幽靈TM 130（依普林公司）(A-1): Ghost TM 130 (Eplin)
（A-2）：含銀-錫合金的顏料分散體（TMP-DC-1，住友大阪水泥有限公司（Sumitomo Osaka Cement Co., Ltd.））（顏料固體含量：30%，銀對錫的重量比=7:3）(A-2): Pigment dispersion containing silver-tin alloy (TMP-DC-1, Sumitomo Osaka Cement Co., Ltd.) (Pigment solid content: 30%, silver to tin Weight ratio=7:3)
（A-3）：含碳黑的顏料分散體（CI-M-050，阪田有限公司（Sakata Co., Ltd.））(A-3): Pigment dispersion containing carbon black (CI-M-050, Sakata Co., Ltd.)
（A-4）：X-55苝黑（Perylene black）（巴斯夫（BASF））：由式A表示的苝有機染料的混合物：
>式A>
（B-1）：脂族聚胺基甲酸酯樹脂（SUO-1000，新安T&C）(B-1): Aliphatic polyurethane resin (SUO-1000, Xin'an T&C)
（B-2）：丙烯酸壓敏黏合劑樹脂（WA-9263，友仁化工有限公司（Woo-In Chemtech Co., Ltd.））(B-2): Acrylic pressure-sensitive adhesive resin (WA-9263, Woo-In Chemtech Co., Ltd.)
（C）：二季戊四醇六丙烯酸酯（韓農化學公司）(C): Dipentaerythritol hexaacrylate (Hannon Chemical Company)
（D-1）：IGR 369(D-1): IGR 369
（D-2）：蜜胺固化劑（M60，友仁化工有限公司）(D-2): Melamine curing agent (M60, Youren Chemical Co., Ltd.)
（E）：丙二醇甲醚乙酸酯(E): Propylene glycol methyl ether acetate
（F）：迪高® 76(F): Tego ® 76
使用實例及比較例中製備的光屏蔽層組成物中的每一者製作了偏光板。A polarizing plate was produced using each of the light shielding layer compositions prepared in the Examples and Comparative Examples.
藉由對光屏蔽層組成物進行凹版印刷塗佈而沿聚對苯二甲酸乙二醇酯（PET）膜的一個表面的周邊形成了第一印刷圖案。此處，在印刷輥上形成有與第一印刷圖案對應的圖案，所述圖案具有正六邊形形狀且彼此分離以形成蜂巢結構。第一印刷圖案的每一側具有為50微米的長度。在印刷第一印刷圖案之後，使用另一印刷輥在第一印刷圖案上形成了第二印刷圖案。所述另一印刷輥形成有與第二印刷圖案對應的圖案。第二印刷圖案具有菱形形狀，所述第二印刷圖案的每一側具有為50微米的長度。圖案印刷被執行成使得：第二印刷圖案可形成於第一印刷圖案上且第一印刷圖案的長軸平行於第二印刷圖案的長軸。最終，形成了具有如圖4中所示結構的光屏蔽層。在光屏蔽層上形成的印刷圖案的細節示出於表2中。The first printing pattern was formed along the periphery of one surface of the polyethylene terephthalate (PET) film by gravure coating the light shielding layer composition. Here, a pattern corresponding to the first printing pattern is formed on the printing roller, and the patterns have a regular hexagon shape and are separated from each other to form a honeycomb structure. Each side of the first printed pattern has a length of 50 microns. After printing the first printing pattern, another printing roller is used to form a second printing pattern on the first printing pattern. The other printing roller is formed with a pattern corresponding to the second printing pattern. The second printing pattern has a rhombus shape, and each side of the second printing pattern has a length of 50 microns. The pattern printing is performed such that the second printing pattern can be formed on the first printing pattern and the long axis of the first printing pattern is parallel to the long axis of the second printing pattern. Finally, a light shielding layer having a structure as shown in FIG. 4 is formed. The details of the printed pattern formed on the light shielding layer are shown in Table 2.
在移除溶劑之後，藉由在85℃下使用金屬鹵化物燈以650毫焦曝光1分鐘而對實例1、實例3、實例5及比較例1中製備的組成物中的每一者進行了固化以形成光屏蔽層（厚度：2微米）。After the solvent was removed, each of the compositions prepared in Example 1, Example 3, Example 5, and Comparative Example 1 was performed by using a metal halide lamp to expose for 1 minute at 650 millijoules at 85°C. Cured to form a light shielding layer (thickness: 2 microns).
藉由在85℃下加熱2分鐘而對在實例2、實例4、實例6及比較例2中製備的組成物中的每一者進行了固化以形成光屏蔽層（厚度：2微米）。Each of the compositions prepared in Example 2, Example 4, Example 6, and Comparative Example 2 was cured by heating at 85° C. for 2 minutes to form a light shielding layer (thickness: 2 microns).
使聚乙烯醇膜（厚度：60微米，聚合程度：2,400，皂化程度：99.0%，VF-PS6000，日本可樂麗有限公司（Kuraray Co., Ltd., Japan））在水溶液中在25℃下經歷溶脹（swell），然後在含碘離子的染色浴中在30℃下進行染色及拉伸。接著，將染色的聚乙烯醇膜在硼酸溶液中在55℃下進一步拉伸至其初始長度的6倍。在腔室中在50℃下將所獲得的聚乙烯醇膜乾燥了3分鐘，藉此製備偏光器（厚度：12微米）。The polyvinyl alcohol film (thickness: 60 microns, degree of polymerization: 2,400, degree of saponification: 99.0%, VF-PS6000, Kuraray Co., Ltd., Japan) was subjected to an aqueous solution at 25°C Swell, then dye and stretch in a dye bath containing iodide ions at 30°C. Next, the dyed polyvinyl alcohol film was further stretched to 6 times its original length at 55° C. in a boric acid solution. The obtained polyvinyl alcohol film was dried in a chamber at 50° C. for 3 minutes, thereby preparing a polarizer (thickness: 12 μm).
將結合劑、所製備的偏光器、結合層、作為第二偏光器保護膜的環烯烴聚合物膜（ZB12-052125，瑞翁公司（Zeon Co.））以及黏合劑層（OS-207，綜研（Soken））依次堆疊於上面形成有光屏蔽層的PET膜的一個表面上，藉此製備偏光板。
表2
就表4中所列性質對所製作的偏光板進行了評定。The produced polarizers were evaluated with respect to the properties listed in Table 4.
（1）外觀：使用三波長燈在光屏蔽層（長度×寬度，200毫米×10毫米）上觀察到污染物及凹陷。在光屏蔽層上無污染物或凹陷被評定為良好，而在光屏蔽層上觀察到具有200微米或大於200微米的面積的污染物或凹陷被評定為不良。(1) Appearance: Contaminants and depressions are observed on the light shielding layer (length × width, 200 mm × 10 mm) using a three-wavelength lamp. The absence of contaminants or depressions on the light shielding layer was rated as good, and the observation of contaminants or depressions having an area of 200 micrometers or more on the light shielding layer was rated as poor.
（2）黏合1：藉由利由偏光板的黏合劑層（OS-207，綜研）將實例及比較例中製作的偏光板中的每一者附著至玻璃板而製備了樣品。在將刀***偏光板的偏光器與PET膜的表面之間的間隙中之後，在剝離PET膜時評價了剝離程度，光屏蔽層在PET膜的所述表面上形成於偏光板的非顯示區中。接著，根據下表3評價了黏合。在對黏合1的評價中，1分或更低的分表示在可靠性及耐久性方面的良好性質，而容許使用偏光板。
表3
（3）光屏蔽性質：藉由紫外線濾波器（UV filter）使用密度計（TD-904：格靈達麥克貝斯公司（Gretag Macbeth Company））根據日本工業標準（Japanese Industrial Standards，JIS）K7651：1988年在實例及比較例中製備的偏光板中的每一者的光屏蔽層上量測了光屏蔽性質。基於在550奈米的波長下的吸光度使用紫外線-可見光分光光度計（UV-visible spectrophotometer）（JASC0-750）評價了光屏蔽層。3.0或大於3.0的吸光度值被評定為良好，且小於0.3的吸光度值被評定為不良。(3) Light shielding properties: A density meter (TD-904: Gretag Macbeth Company (Gretag Macbeth Company)) is used according to the Japanese Industrial Standards (JIS) K7651: 1988 by using a UV filter. The light-shielding properties were measured on the light-shielding layer of each of the polarizing plates prepared in the Examples and Comparative Examples. The light shielding layer was evaluated using a UV-visible spectrophotometer (JASC0-750) based on the absorbance at a wavelength of 550 nm. An absorbance value of 3.0 or more was rated as good, and an absorbance value of less than 0.3 was rated as poor.
（4）OD（單位：不存在）：量測了偏光板中的每一者的OD值。使用X-Rite 300在偏光板的其中形成有光屏蔽層的非顯示區上量測了OD值。(4) OD (unit: non-existent): The OD value of each polarizer is measured. The X-Rite 300 was used to measure the OD value on the non-display area of the polarizing plate in which the light shielding layer was formed.
（5）在950奈米的波長下的透光率（單位：%）：使用近紅外分光計（near-IR spectrometer）（VERTEX80 FT-IR分光計，布魯克光學（Bruker Optics））在偏光板的其中形成有光屏蔽層的非顯示區上量測了透光率。(5) Light transmittance at a wavelength of 950 nm (unit: %): Use a near-IR spectrometer (VERTEX80 FT-IR spectrometer, Bruker Optics) in the polarizing plate The light transmittance was measured on the non-display area where the light shielding layer was formed.
（6）IR波長的相機辨識：使用近紅外分光計（VERTEX80 FT-IR分光計，布魯克光學）在偏光板的其中形成有光屏蔽層的非顯示區上量測了在950奈米的波長下的透光率，以參照所述透光率評價對對準標記的辨識。在950奈米的波長下為30%或大於30%的透光率被評定為良好，而在950奈米的波長下為小於30%的透光率被評定為不良。(6) Camera identification of IR wavelength: A near-infrared spectrometer (VERTEX80 FT-IR spectrometer, Bruker Optics) was used to measure at a wavelength of 950 nm on the non-display area where the light shielding layer is formed on the polarizer. The light transmittance of, with reference to the light transmittance to evaluate the recognition of the alignment mark. A light transmittance of 30% or more at a wavelength of 950 nm is rated as good, and a light transmittance of less than 30% at a wavelength of 950 nm is rated as poor.
（7）黏合2（單位：數目）：藉由交叉影線切割方法（cross hatch cut method）評價了黏合2。(7) Adhesion 2 (unit: number): Adhesion 2 was evaluated by the cross hatch cut method.
藉由將光屏蔽層組成物塗佈於聚對苯二甲酸乙二醇酯（PET）膜的一個表面上且隨後進行固化而形成了光屏蔽層。將光屏蔽層切割成了尺寸為10厘米×10厘米（長度×寬度）的正方形形狀，以在橫向上形成10個段且在縱向上形成10個段，藉此形成100個段。接著，將黏合膠帶附著至光屏蔽層，且在黏合膠帶在垂直方向上自光屏蔽層分離時，對餘留於光屏蔽層上的段的數目進行了計數。餘留於光屏蔽層上的段的較大數目表示光屏蔽層對保護膜的更佳黏合。其餘段的數目為95或大於95，以便藉由確保良好的可靠性及耐久性而容許在實踐中使用偏光板。
表4
如表4中所示，可看出，根據本發明的偏光板在950奈米的波長下具有良好的光屏蔽性質及良好的透光率，以使得能夠在將偏光板附著至面板之後，藉由改善在切割時對對準標記的辨識來有效地切割，且亦在黏合1及黏合2方面表現出了良好的性質，以使得光屏蔽層能夠不僅對偏光器保護膜表現出良好的黏合，而且對偏光器及結合層表現出良好的黏合。As shown in Table 4, it can be seen that the polarizing plate according to the present invention has good light shielding properties and good light transmittance at a wavelength of 950 nm, so that after the polarizing plate is attached to the panel, the Effectively cutting by improving the recognition of alignment marks during cutting, and also exhibits good properties in
相反，可看出，比較例1至比較例4的組成物（其在不使用根據本發明的染料的情況下製備或者使用與根據本發明的染料不同種類的有機染料製備）無法提供本發明的有益效果。On the contrary, it can be seen that the compositions of Comparative Examples 1 to 4 (which are prepared without using the dye according to the present invention or prepared with a different kind of organic dye from the dye according to the present invention) cannot provide the present invention. Beneficial effect.
應理解，在不背離本發明的精神及範圍的條件下，熟習此項技術者可做出各種修改、改變、變更及等效實施例。It should be understood that those skilled in the art can make various modifications, changes, alterations and equivalent embodiments without departing from the spirit and scope of the present invention.
10:偏光板 100:偏光器 200:保護膜/第一偏光器保護膜 310:結合層 320:光屏蔽層 320'、323:印刷圖案 320'L、321L、322L:最大長軸 321:第一印刷圖案 322:第二印刷圖案 324:其餘區 400:第二偏光器保護膜 S1:顯示區 S2:非顯示區 a、a'、b、c、d:點 H:距離最小值 I-II:線 T:分離距離 W:距離 ∆L:最短距離10: Polarizing plate 100: Polarizer 200: protective film / first polarizer protective film 310: Bonding layer 320: light shielding layer 320', 323: printing pattern 320'L, 321L, 322L: Maximum long axis 321: The first printing pattern 322: The second printing pattern 324: rest area 400: second polarizer protective film S1: Display area S2: Non-display area a, a', b, c, d: point H: minimum distance I-II: Line T: separation distance W: distance ∆L: shortest distance
圖1是根據本發明一個實施例的偏光板的平面圖。 圖2是沿圖1所示的線I-II截取的剖視圖。 圖3是沿圖1所示的線I-II截取的形成於偏光板的光屏蔽層上的印刷圖案的放大剖視圖。 圖4是根據本發明另一實施例的形成於偏光板的光屏蔽層上的印刷圖案的放大剖視圖。Fig. 1 is a plan view of a polarizing plate according to an embodiment of the present invention. Fig. 2 is a cross-sectional view taken along the line I-II shown in Fig. 1. 3 is an enlarged cross-sectional view of a printing pattern formed on a light shielding layer of a polarizing plate, taken along the line I-II shown in FIG. 1. 4 is an enlarged cross-sectional view of a printed pattern formed on a light shielding layer of a polarizing plate according to another embodiment of the present invention.
10:偏光板 10: Polarizing plate
S1:顯示區 S1: Display area
S2:非顯示區 S2: Non-display area
I-II:線 I-II: Line
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