TW201947299A

TW201947299A - Display device

Info

Publication number: TW201947299A
Application number: TW107115283A
Authority: TW
Inventors: 黃怡菱; 蔡明宏; 梁輝鴻
Original assignee: 住華科技股份有限公司
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2019-12-16
Also published as: CN108828706A; CN108828706B; TWI672545B

Abstract

A display device is provided. The display device includes a display panel, a first polarizer structure and a second polarizer structure. The display panel has a first surface and a second surface opposite to the first surface. The first polarizer structure is disposed on the first surface of the display panel. The first polarizer structure includes a first polarizer and has a first thickness. The second polarizer structure is disposed on the second surface of the display panel. The second polarizer structure includes a second polarizer and has a second thickness. The absorption axis of the first polarizer is perpendicular to the absorption axis of the second polarizer. The first polarizer has a first torsional moment [tau]1, and second polarizer has a second torsional moment [tau]2, and the first torsional moment [tau]1 and the second torsional moment [tau]2 satisfy the following equations 1 to 3: [tau]1=r1 x d1 x L0 equation 1, [tau]2=r2 x d2 x L90 equation 2, and |[tau]1-[tau]2| ≤ 0.5 equation 3, wherein r1 is the degree of shrinkage of the first polarizer, d1 is the first thickness, L0 is the length of the absorption axis of the first polarizer, r2 is the degree of shrinkage of the second polarizer, d2 is the second thickness, and L90 is the length of the absorption axis of the second polarizer.

Description

顯示裝置Display device

本揭露是有關於一種顯示裝置。The present disclosure relates to a display device.

基於智慧型手機的發展，許多車載資訊系統外加有連結智慧型手機和平板電腦以擴展功能的能力，甚至已經開發出整合的系統，因此，完全依靠智慧型手機和平板電腦的螢幕與軟硬體作為操作主體智能汽車概念開始受到廣泛討論。無論是利用智慧型手機以藍芽傳送音樂至汽車音響或控制汽車中控鎖，亦或是利用4G行動網路連線至網際網路撥放影片娛樂乘客，在未來會更加的普遍。另外，車載用顯示器大多用來顯示衛星導航、多媒體娛樂、甚至是儀表板時速或車輛狀況等相關重要資訊。Based on the development of smartphones, many in-vehicle information systems have the ability to connect smartphones and tablets to expand functions, and even integrated systems have been developed. Therefore, they rely entirely on the screens and software and hardware of smartphones and tablets The concept of smart cars as the main body of operation has begun to be widely discussed. Whether it is using a smart phone to transfer music to the car stereo or controlling the car's central lock with Bluetooth, or using a 4G mobile network to connect to the Internet to play videos to entertain passengers, it will become more common in the future. In addition, automotive displays are mostly used to display important information such as satellite navigation, multimedia entertainment, and even dashboard speeds or vehicle conditions.

用於車用液晶顯示器的偏光板不同於一般液晶顯示器，戶外環境的嚴苛條件是對偏光板耐候性的一大考驗，如行駛於潮濕多雨、酷熱或嚴寒的區域、高低溫落差大的戶外停車環境、高震動行車環境，或者在盛夏時節，車用液晶顯示器的環境溫度可能高達50℃以上，有些直接受到日照的表面溫度甚至可到達70～80℃。汽車製造商通常要求面板操作溫度規格須在-30～85℃間，儲存溫度規格必須要在-40～95℃間，因此在設計車內液晶顯示器時，會針對車用規格選擇較高規格之材料。Polarizers for LCDs used in cars are different from ordinary LCDs. The harsh conditions of outdoor environments are a test of the weatherability of polarizers, such as driving in humid and rainy, hot or cold areas, and outdoors with high and low temperature drops. The parking environment, high vibration driving environment, or the mid-summer season, the ambient temperature of the car's LCD monitor may be as high as 50 ° C or more, and some of the surface temperatures directly exposed to sunlight can even reach 70-80 ° C. Car manufacturers usually require panel operating temperature specifications to be between -30 to 85 ° C and storage temperature specifications to be between -40 to 95 ° C. Therefore, when designing the LCD display in a car, a higher specification should be selected for the vehicle specification. material.

然而，車載用偏光板在經過嚴苛的高溫環境測試後，常發生因高溫收縮而造成翹曲（Bending）現象，而翹曲現象導致面板變形而擠壓到邊框，進而造成顯示器的邊緣漏光問題。However, after being subjected to severe high-temperature environment tests, automotive polarizing plates often cause warping due to high-temperature shrinkage. The warping phenomenon causes the panel to deform and squeeze into the frame, which causes light leakage at the edges of the display. .

本揭露係有關於一種顯示裝置。實施例中，藉由控制顯示裝置中的第一偏光膜的第一力矩τ以及第二偏光膜的第二力矩τ之間的差值的絕對值為小於或等於0.5，可以有效的抑制顯示面板的翹曲幅度，進而可以達到抑制因顯示面板翹曲而產生的漏光現象。This disclosure relates to a display device. In the embodiment, by controlling the absolute value of the difference between the first moment τ of the first polarizing film and the second moment τ of the second polarizing film in the display device to be less than or equal to 0.5, the display panel can be effectively suppressed The warpage amplitude can further suppress the light leakage phenomenon caused by the warpage of the display panel.

根據本揭露之一實施例，提出一種顯示裝置。顯示裝置包括一顯示面板、一第一偏光結構以及一第二偏光結構。顯示面板具有一第一表面和一第二表面，第二表面相對於第一表面。第一偏光結構設置於顯示面板的第一表面上，第一偏光結構包括一第一偏光膜，且第一偏光結構具有一第一厚度。第二偏光結構設置於顯示面板的第二表面上，第二偏光結構包括一第二偏光膜，且第二偏光結構具有一第二厚度，其中第一偏光膜的吸收軸和第二偏光膜的吸收軸係為彼此垂直。第一偏光膜具有一第一力矩τ1，第二偏光膜具有一第二力矩τ2，第一力矩τ1和第二力矩τ2滿足以下式1、式2和式3： τ1=r1 x d1 x L₀ 式1； τ2=r2 x d2 x L₉₀ 式2； │τ1-τ2│≦0.5 式3 其中，r1係為第一偏光膜的收縮率，d1係為第一厚度，L₀ 係為第一偏光膜的吸收軸長度，r2係為第二偏光膜的收縮率，d2係為第二厚度，L₉₀ 係為第二偏光膜的吸收軸長度。According to an embodiment of the present disclosure, a display device is provided. The display device includes a display panel, a first polarizing structure and a second polarizing structure. The display panel has a first surface and a second surface, and the second surface is opposite to the first surface. The first polarizing structure is disposed on the first surface of the display panel. The first polarizing structure includes a first polarizing film, and the first polarizing structure has a first thickness. The second polarizing structure is disposed on the second surface of the display panel. The second polarizing structure includes a second polarizing film, and the second polarizing structure has a second thickness. The absorption axis of the first polarizing film and the The absorption axes are perpendicular to each other. The first polarizing film has a first moment τ1, and the second polarizing film has a second moment τ2. The first moment τ1 and the second moment τ2 satisfy the following formulae 1, 2 and 3: τ1 = r1 x d1 x L ₀ Formula 1; τ2 = r2 x d2 x L ₉₀ Formula 2; │τ1-τ2│ ≦ 0.5 Formula 3 where r1 is the shrinkage of the first polarizing film, d1 is the first thickness, and L ₀ is the first polarized light the length of the absorption axis, r2 is based film shrinkage rate of the second polarizing film, d2 is the second thickness lines, L ₉₀ is the line length of the second absorption axis of the polarizing film.

為了對本發明之上述及其他方面有更佳的瞭解，下文特舉實施例，並配合所附圖式詳細說明如下：In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

本揭露內容之實施例中，藉由控制顯示裝置中的第一偏光膜的第一力矩τ以及第二偏光膜的第二力矩τ之間的差值的絕對值為小於或等於0.5，可以有效的抑制顯示面板的翹曲幅度，進而可以達到抑制因顯示面板翹曲而產生的漏光現象。In the embodiment of the present disclosure, by controlling the absolute value of the difference between the first moment τ of the first polarizing film and the second moment τ of the second polarizing film in the display device to be less than or equal to 0.5, it can be effective Suppressing the warping width of the display panel can further reduce the light leakage phenomenon caused by the warping of the display panel.

以下係提出各種實施例進行詳細說明，實施例僅用以作為範例說明，並不會限縮本發明欲保護之範圍。在不同實施例與圖式之中，相同的元件，將以相同的元件符號加以表示。值得注意的是，這些特定的實施例，並非用以限定本發明。本發明仍可採用其他特徵、元件、方法及參數來加以實施。實施例的提出，僅係用以例示本發明的技術特徵，並非用以限定本發明的申請專利範圍。該技術領域中具有通常知識者，將可根據以下說明書的描述，在不脫離本發明的精神範圍內，作均等的修飾與變化。此外，實施例中之圖式係省略部份元件，以清楚顯示本發明之技術特點。The following is a detailed description of various embodiments. The embodiments are only used as examples, and do not limit the scope of the present invention. In different embodiments and drawings, the same elements will be represented by the same element symbols. It should be noted that these specific embodiments are not intended to limit the present invention. The invention can still be implemented with other features, elements, methods and parameters. The proposal of the embodiments is only used to illustrate the technical features of the present invention, and is not intended to limit the scope of patent application of the present invention. Those with ordinary knowledge in the technical field can make equal modifications and changes according to the description of the following description without departing from the spirit of the present invention. In addition, some elements in the drawings in the embodiments are omitted to clearly show the technical features of the present invention.

第1圖繪示根據本揭露內容之一實施例之一種顯示裝置的立體示意圖，第2圖繪示根據本揭露內容之一實施例之一種顯示裝置的剖面示意圖。FIG. 1 is a schematic perspective view of a display device according to an embodiment of the disclosure, and FIG. 2 is a schematic cross-sectional view of a display device according to an embodiment of the disclosure.

如第1～2圖所示，顯示裝置1包括一顯示面板10、一第一偏光結構20以及一第二偏光結構30。顯示面板10具有一第一表面10A和一第二表面10B，第二表面10B相對於第一表面10A。第一偏光結構20設置於顯示面板10的第一表面10A上，第一偏光結構20包括一第一偏光膜210，且第一偏光結構20具有一第一厚度d1。第二偏光結構30設置於顯示面板10的第二表面10B上，第二偏光結構30包括一第二偏光膜310，且第二偏光結構30具有一第二厚度d2，其中第一偏光膜210的吸收軸A1和第二偏光膜310的吸收軸A2係為彼此垂直。第一偏光膜210具有一第一力矩τ1，第二偏光膜310具有一第二力矩τ2，第一力矩τ1和第二力矩τ2滿足以下式1、式2和式3：As shown in FIGS. 1 and 2, the display device 1 includes a display panel 10, a first polarizing structure 20 and a second polarizing structure 30. The display panel 10 has a first surface 10A and a second surface 10B. The second surface 10B is opposite to the first surface 10A. The first polarizing structure 20 is disposed on the first surface 10A of the display panel 10. The first polarizing structure 20 includes a first polarizing film 210, and the first polarizing structure 20 has a first thickness d1. The second polarizing structure 30 is disposed on the second surface 10B of the display panel 10. The second polarizing structure 30 includes a second polarizing film 310, and the second polarizing structure 30 has a second thickness d2. The absorption axis A1 and the absorption axis A2 of the second polarizing film 310 are perpendicular to each other. The first polarizing film 210 has a first moment τ1, and the second polarizing film 310 has a second moment τ2. The first moment τ1 and the second moment τ2 satisfy the following formulae 1, 2 and 3:

τ1=r1 x d1 x L₀ 式1；τ1 = r1 x d1 x L ₀ Formula 1;

τ2=r2 x d2 x L₉₀ 式2；τ2 = r2 x d2 x L ₉₀ Formula 2;

│τ1-τ2│≦0.5 式3│τ1-τ2│ ≦ 0.5 Equation 3

其中，r1為第一偏光膜210的收縮率，d1為第一厚度，L₀ 為第一偏光膜210的吸收軸長度，r2為第二偏光膜310的收縮率，d2為第二厚度，L₉₀ 為第二偏光膜310的吸收軸長度。Wherein, r1 is the shrinkage rate of the first polarizing film 210, d1 is the first thickness, L ₀ is the length of the absorption axis of the first polarizing film 210, r2 is the shrinkage rate of the second polarizing film 310, d2 is the second thickness, L ₉₀ is an absorption axis length of the second polarizing film 310.

本揭露內容的實施例中，第一偏光膜210的收縮率r1和第二偏光膜310的收縮率r2是分別將具有2毫米（mm） x 10毫米（mm）的尺寸的第一偏光膜210和第二偏光膜310置於溫度為95°C的熱分析儀中量測所得。一些實施例中，第一偏光膜210的收縮率r1和第二偏光膜310的收縮率r2分別獨立地為0 N(牛頓)~8 N，較佳地可為2 N~5 N。In the embodiment of the present disclosure, the shrinkage ratio r1 of the first polarizing film 210 and the shrinkage ratio r2 of the second polarizing film 310 are the first polarizing film 210 having a size of 2 millimeters (mm) x 10 millimeters (mm), respectively. The second polarizing film 310 and the second polarizing film 310 are measured in a thermal analyzer at a temperature of 95 ° C. In some embodiments, the shrinkage ratio r1 of the first polarizing film 210 and the shrinkage ratio r2 of the second polarizing film 310 are independently 0 N (Newton) to 8 N, and preferably 2 N to 5 N.

根據本揭露內容之實施例，藉由控制第一偏光膜210的第一力矩τ1以及第二偏光膜310的第二力矩τ2之間的差值在上述條件時，可以有效的抑制顯示面板10的翹曲（Bending），而當力矩的差值越小時，顯示面板10的翹曲幅度則越小，則可以達到抑制因顯示面板翹曲而產生的漏光現象。According to the embodiment of the present disclosure, by controlling the difference between the first moment τ1 of the first polarizing film 210 and the second moment τ2 of the second polarizing film 310 under the above conditions, the display panel 10 can be effectively suppressed. Bending, and the smaller the difference in torque is, the smaller the warping amplitude of the display panel 10 is, and the light leakage phenomenon caused by the warping of the display panel can be suppressed.

根據本揭露內容之實施例，如第1～2圖所示，第一厚度d1例如是第一偏光膜210的外側表面和顯示面板10之間的距離，而第二厚度d2例如是第二偏光膜310的外側表面和顯示面板10之間的距離。According to the embodiment of the disclosure, as shown in FIGS. 1 and 2, the first thickness d1 is, for example, the distance between the outer surface of the first polarizing film 210 and the display panel 10, and the second thickness d2 is, for example, the second polarized light. The distance between the outside surface of the film 310 and the display panel 10.

根據本揭露內容之實施例，第一偏光膜210和顯示面板10之間的距離（第一厚度d1）與第二偏光膜和顯示面板10之間的距離（第二厚度d2）代表了貼合在顯示面板10兩側的膜材厚度，兩側的分別的疊加總膜厚會對第一力矩τ1和第二力矩τ2的差值產生影響。再者，第一偏光膜210與第二偏光膜310的吸收軸方向不同也會造成力矩的差異，進而影響顯示面板的翹曲方向，因此也需考量不同方向的吸收軸長度的影響，其計算出的力矩的差值結果可表示整體的翹曲方向，若力矩的差值為正，則整體的翹曲方向為朝第一偏光膜210的方向翹曲，且力矩的差值越大則翹曲程度越嚴重；反之，若力矩的差值為負，則整體的翹曲方向為朝第二偏光膜310的方向翹曲。According to the embodiment of the present disclosure, the distance between the first polarizing film 210 and the display panel 10 (first thickness d1) and the distance between the second polarizing film and the display panel 10 (second thickness d2) represent the bonding The thicknesses of the film materials on both sides of the display panel 10, and the respective total superimposed film thicknesses on both sides of the display panel 10 will affect the difference between the first moment τ1 and the second moment τ2. In addition, different directions of the absorption axis of the first polarizing film 210 and the second polarization film 310 will also cause a difference in torque, which will affect the warping direction of the display panel. Therefore, the influence of the length of the absorption axis in different directions needs to be considered. The result of the difference in torque can indicate the overall warping direction. If the difference in torque is positive, the overall warping direction is warping in the direction of the first polarizing film 210, and the larger the difference in torque, the more warping The more severe the degree of curvature; conversely, if the difference in moment is negative, the overall warping direction is warping toward the second polarizing film 310.

換言之，根據本揭露內容之實施例，第一偏光膜210的第一力矩τ1以及第二偏光膜310的第二力矩τ2之間的差值需同時考慮式1、式2和式3中的所有因素，包括兩個偏光膜的收縮率（r1、r2）、兩個偏光結構的厚度（d1、d2）以及兩個偏光膜的吸收軸長度（L₀ 、L₉₀ ），力矩的差值並非被單一或僅兩個因素便能完全影響。詳細而言，偏光膜的收縮率用以表示偏光膜的材料的收縮特性，而偏光結構的厚度及偏光膜的吸收軸長度進一步將面積及厚度方向的影響因素納入考量，因而顯示裝置的整體翹曲程度的改善是基於第一偏光膜210的第一力矩τ1以及第二偏光膜310的第二力矩τ2之間的差值的結果而決定。In other words, according to the embodiment of the present disclosure, the difference between the first moment τ1 of the first polarizing film 210 and the second moment τ2 of the second polarizing film 310 needs to consider all of Equation 1, Equation 2 and Equation 3 at the same time. factors, including two polarizing shrinkage (R1, R2), the thickness of the two polarization structure (d1, d2) and two polarizing absorption axis length (L _0, L _90), the torque difference is not A single or only two factors can fully affect it. In detail, the shrinkage of the polarizing film is used to indicate the shrinking characteristics of the material of the polarizing film, and the thickness of the polarizing structure and the length of the absorption axis of the polarizing film further take into consideration the factors affecting the area and thickness direction, so the overall display device is warped. The improvement in the degree of curvature is determined based on the difference between the first moment τ1 of the first polarizing film 210 and the second moment τ2 of the second polarizing film 310.

一些實施例中，當顯示面板10的長度110相對於寬度120的比例為1.0～1.5時，第一力矩τ1和第二力矩τ2的差值係為0 Nm (牛頓米)～0.4 Nm，較佳地為0 Nm～0.3 Nm，更佳地為0 Nm～0.20 Nm。In some embodiments, when the ratio of the length 110 to the width 120 of the display panel 10 is 1.0 to 1.5, the difference between the first moment τ1 and the second moment τ2 is 0 Nm (Newton meters) to 0.4 Nm, which is better. The ground is 0 Nm to 0.3 Nm, and more preferably 0 Nm to 0.20 Nm.

一些實施例中，當顯示面板10的長度110相對於寬度120的比例為1.5～2時，第一力矩τ1和第二力矩τ2的差值係為0 Nm～0.3 Nm，較佳地為0 Nm～0.2 Nm，更佳地為0 Nm～0.15 Nm。In some embodiments, when the ratio of the length 110 to the width 120 of the display panel 10 is 1.5 to 2, the difference between the first moment τ1 and the second moment τ2 is 0 Nm to 0.3 Nm, preferably 0 Nm. ~ 0.2 Nm, more preferably 0 Nm to 0.15 Nm.

一些實施例中，當顯示面板10的長度110相對於寬度120的比例為2.0～2.3時，第一力矩τ1和第二力矩τ2的差值係為0 Nm～0.4 Nm，較佳地為0 Nm～0.3 Nm，更佳地為0 Nm～0.2 Nm。In some embodiments, when the ratio of the length 110 to the width 120 of the display panel 10 is 2.0 to 2.3, the difference between the first moment τ1 and the second moment τ2 is 0 Nm to 0.4 Nm, and preferably 0 Nm. ∼0.3 Nm, more preferably 0 Nm to 0.2 Nm.

一些實施例中，當顯示面板10的長度110相對於寬度120的比例為2.3～3.0時，第一力矩τ1和第二力矩τ2的差值係為0 Nm～0.5 Nm，較佳地為0 Nm～0.4 Nm，更佳地為0 Nm～0.3 Nm。In some embodiments, when the ratio of the length 110 to the width 120 of the display panel 10 is 2.3 to 3.0, the difference between the first moment τ1 and the second moment τ2 is 0 Nm to 0.5 Nm, and preferably 0 Nm. -0.4 Nm, more preferably 0 Nm-0.3 Nm.

如第1～2圖所示，實施例中，第一偏光結構20可更包括一第一膠層220以及一第一保護層230，第一膠層220可黏合至顯示面板10的第一表面10A，第一保護層230設置於第一膠層220上，第一偏光膜210設置於第一保護層230上。本實施例中，第一膠層220、第一保護層230和第一偏光膜210的總厚度即為第一厚度d1。第一厚度d1厚度範圍可為15微米~160微米，較佳的厚度範圍為60微米~110微米。As shown in FIGS. 1 and 2, in the embodiment, the first polarizing structure 20 may further include a first adhesive layer 220 and a first protective layer 230. The first adhesive layer 220 may be adhered to the first surface of the display panel 10. 10A, a first protective layer 230 is disposed on the first adhesive layer 220, and a first polarizing film 210 is disposed on the first protective layer 230. In this embodiment, the total thickness of the first adhesive layer 220, the first protective layer 230, and the first polarizing film 210 is the first thickness d1. The first thickness d1 may have a thickness ranging from 15 μm to 160 μm, and a preferred thickness range is from 60 μm to 110 μm.

如第1～2圖所示，實施例中，第二偏光結構30可更包括一第二膠層320以及一第二保護層330，第二膠層320可黏合至顯示面板10的第二表面10B，第二保護層330設置於第二膠層320上，第二偏光膜310設置於第二保護層330上。本實施例中，第二膠層320、第二保護層330和第二偏光膜310的總厚度即為第二厚度d2。第一厚度d2厚度範圍可為15微米~160微米，較佳的厚度範圍為60微米~110微米。As shown in FIGS. 1 and 2, in the embodiment, the second polarizing structure 30 may further include a second adhesive layer 320 and a second protective layer 330. The second adhesive layer 320 may be adhered to the second surface of the display panel 10. 10B, the second protective layer 330 is disposed on the second adhesive layer 320, and the second polarizing film 310 is disposed on the second protective layer 330. In this embodiment, the total thickness of the second adhesive layer 320, the second protective layer 330, and the second polarizing film 310 is the second thickness d2. The first thickness d2 may have a thickness ranging from 15 μm to 160 μm, and a preferred thickness range is from 60 μm to 110 μm.

實施例中，第一厚度d1與第二厚度d2可以相同或不同。一些實施例中，第一厚度d1與第二厚度d2的差值可為0微米（μm）到170微米之間，較佳的差值範圍可為0微米到100微米之間。例如可以是大於或等於20微米；一些其他實施例中，第一厚度d1與第二厚度d2的差值例如可以是大於或等於25微米；一些其他實施例中，第一厚度d1與第二厚度d2的差值例如可以是大於或等於65微米；一些其他實施例中，第一厚度d1與第二厚度d2的差值例如可以是大於或等於100微米；一些其他實施例中，第一厚度d1與第二厚度d2的差值例如可以是小於或等於170微米。In the embodiment, the first thickness d1 and the second thickness d2 may be the same or different. In some embodiments, the difference between the first thickness d1 and the second thickness d2 may be between 0 micrometers (μm) and 170 micrometers, and a preferred difference range may be between 0 micrometers and 100 micrometers. For example, it may be greater than or equal to 20 microns; in some other embodiments, the difference between the first thickness d1 and the second thickness d2 may be greater than or equal to 25 microns; in some other embodiments, the first thickness d1 and the second thickness The difference between d2 may be greater than or equal to 65 microns, for example; in some other embodiments, the difference between the first thickness d1 and the second thickness d2 may be greater than or equal to 100 microns; in some other embodiments, the first thickness d1 The difference from the second thickness d2 may be, for example, less than or equal to 170 micrometers.

實施例中，顯示面板10係為一液晶顯示面板，例如可為一IPS液晶顯示面板、或一VA液晶顯示面板。In the embodiment, the display panel 10 is a liquid crystal display panel, for example, an IPS liquid crystal display panel or a VA liquid crystal display panel.

實施例中，如第1～2圖所示，顯示裝置1可更包括兩個外層保護層240、340，外層保護層240和外層保護層340分別設置於第一偏光膜210的外側以及第二偏光膜310的外側。In the embodiment, as shown in FIGS. 1 and 2, the display device 1 may further include two outer protective layers 240 and 340, and the outer protective layer 240 and the outer protective layer 340 are respectively disposed on the outside of the first polarizing film 210 and the second The outside of the polarizing film 310.

實施例中，第一偏光膜210和第二偏光膜310的材料可為聚乙烯醇（PVA）樹脂膜，聚乙烯醇膜可藉由皂化聚醋酸乙烯樹脂製得。聚醋酸乙烯樹脂的例子包括醋酸乙烯之單聚合物，即聚醋酸乙烯，以及醋酸乙烯之共聚合物和其他能與醋酸乙烯進行共聚合之單體。其他能與醋酸乙烯進行共聚合之單體的例子包括不飽和羧酸(例如丙烯酸、甲基丙烯酸、丙烯酸乙酯、正丙烯酸丙酯、甲基丙烯酸甲酯)、烯烴(例如乙烯、丙烯、1-丁烯、2-甲丙烯)、乙烯醚(例如乙基乙烯醚、甲基乙烯醚、正丙基乙烯醚、異丙基乙烯醚)、不飽和磺酸(例如乙烯基磺酸、乙烯基磺酸鈉)等等。第一偏光膜210的厚度和第二偏光膜310的厚度可分別獨立5~35微米，較佳為20～30微米，例如大約25微米。In the embodiment, a material of the first polarizing film 210 and the second polarizing film 310 may be a polyvinyl alcohol (PVA) resin film, and the polyvinyl alcohol film may be made by saponifying a polyvinyl acetate resin. Examples of the polyvinyl acetate resin include a single polymer of vinyl acetate, that is, polyvinyl acetate, and a copolymer of vinyl acetate and other monomers capable of copolymerizing with vinyl acetate. Examples of other monomers copolymerizable with vinyl acetate include unsaturated carboxylic acids (e.g. acrylic acid, methacrylic acid, ethyl acrylate, propyl n-acrylate, methyl methacrylate), olefins (e.g. ethylene, propylene, 1 -Butene, 2-methylpropene), vinyl ethers (e.g. ethyl vinyl ether, methyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether), unsaturated sulfonic acids (e.g. vinyl sulfonic acid, vinyl Sodium sulfonate) and so on. The thickness of the first polarizing film 210 and the thickness of the second polarizing film 310 may be independently 5 to 35 micrometers, preferably 20 to 30 micrometers, for example, about 25 micrometers.

實施例中，第一保護層230、第二保護層330和外層保護層240、340的材料可為透明性、機械強度、熱穩定性、水分阻隔性等優良之熱可塑性樹脂，例如可包括纖維素系樹脂、丙烯酸系樹脂、非結晶性聚烯烴系樹脂、聚酯系樹脂、聚碳酸酯系樹脂及其組合，具體可包括聚甲基丙烯酸甲酯(Polymethylmethacrylate，PMMA)、纖維素系樹脂是指纖維素中部分的羥基被乙酸酯化之樹脂，或是一部分被乙酸酯化、一部分被其他酸酯化之混合酯。纖維素系樹脂較佳為纖維素酯系樹脂，更佳為乙醯基纖維素系樹脂，例如三乙醯基纖維素、二乙醯基纖維素、纖維素乙酸酯丙酸酯、纖維素乙酸酯丁酸酯等，被充分酯化的纖維素稱三醋酸纖維素（triacetate cellulose，TAC）、丙烯酸樹脂膜、聚芳香羥樹脂膜、聚醚樹脂膜、環聚烯烴樹脂膜(例如聚冰片烯樹脂膜)、聚碳酸酯系樹脂例如由碳酸與二醇或雙酚所形成的聚酯，如：聚對苯二甲酸乙二醇酯(Polyethylene Terephthalate，PET)、聚丙稀(Polypropylene，PP)、聚乙烯(polyethylene, PE)、非結晶性聚烯烴系樹脂例如環狀烯烴單體（共）聚合物（cyclo olefin (co)polymers，COC/COP），由降冰片烯、環戊二烯、二環戊二烯、四環十二碳烯等開環聚合物，或與烯烴類之共聚合物所構成、聚碳酸酯(Polycarbonate，PC)以及上述任意組合所組成的一族群。除此之外，保護層材料還可例如是(甲基)丙烯酸系、胺基甲酸酯系、丙烯酸胺基甲酸酯系、環氧系、聚矽氧系等熱硬化性樹脂或紫外線硬化型樹脂。此外，亦可進一步對上述保護層實行表面處理，例如，抗眩光處理、抗反射處理、硬塗處理、帶電防止處理或抗污處理等。實施例中，第一保護層230的厚度、第二保護層330的厚度、外層保護層240的厚度和外層保護層340的厚度可分別獨立為5~90微米，較佳為20～50微米，例如大約20～40微米。In the embodiment, the materials of the first protective layer 230, the second protective layer 330, and the outer protective layers 240 and 340 may be thermoplastic resins having excellent transparency, mechanical strength, thermal stability, moisture barrier properties, and the like, and may include fibers, for example. Plain resins, acrylic resins, amorphous polyolefin resins, polyester resins, polycarbonate resins, and combinations thereof. Specific examples include polymethylmethacrylate (PMMA), and cellulose resins. Refers to resins in which some of the hydroxyl groups in cellulose are esterified with acetate, or mixed esters that are partially esterified with acetate and partly esterified with other acids. The cellulose resin is preferably a cellulose ester resin, more preferably an ethyl cellulose resin, such as triethyl cellulose, diethyl cellulose, cellulose acetate propionate, cellulose Acetate butyrate, etc., are fully esterified cellulose called triacetate cellulose (TAC), acrylic resin film, polyaromatic hydroxy resin film, polyether resin film, cyclic polyolefin resin film (such as poly Borneene resin film), polycarbonate resins such as polyesters formed from carbonic acid and diols or bisphenols, such as: Polyethylene Terephthalate (PET), Polypropylene (PP) ), Polyethylene (PE), amorphous polyolefin resins such as cyclic olefin (co) polymers (COC / COP), composed of norbornene, cyclopentadiene A group consisting of ring-opening polymers such as dicyclopentadiene, tetracyclododecene, or copolymers with olefins, polycarbonate (PC), and any combination of the foregoing. In addition, the protective layer material may be, for example, a thermosetting resin such as (meth) acrylic, urethane, acrylic urethane, epoxy, or silicone, or ultraviolet curing. Type resin. In addition, the protective layer may be further subjected to a surface treatment, for example, an anti-glare treatment, an anti-reflection treatment, a hard coating treatment, a charging prevention treatment, or an antifouling treatment. In the embodiment, the thickness of the first protective layer 230, the thickness of the second protective layer 330, the thickness of the outer protective layer 240, and the thickness of the outer protective layer 340 may be independently 5 to 90 micrometers, preferably 20 to 50 micrometers. For example, about 20 to 40 microns.

實施例中，第一膠層220和第二膠層320例如是感壓膠或光學膠。第一膠層220的厚度和第二膠層320的厚度可分別獨立為5~35微米，較佳為20～30微米，例如大約25微米。In the embodiment, the first adhesive layer 220 and the second adhesive layer 320 are, for example, pressure-sensitive adhesive or optical adhesive. The thickness of the first adhesive layer 220 and the thickness of the second adhesive layer 320 may be independently 5 to 35 micrometers, preferably 20 to 30 micrometers, such as about 25 micrometers.

第3圖繪示根據本揭露內容之另一實施例之一種顯示裝置的剖面示意圖。本實施例中與前述實施例相同或相似的元件係沿用同樣或相似的元件標號，且相同或相似元件的相關說明請參考前述，在此不再贅述。FIG. 3 is a schematic cross-sectional view of a display device according to another embodiment of the disclosure. In this embodiment, the same or similar components are denoted by the same or similar components, and related descriptions of the same or similar components are referred to the foregoing, and will not be repeated here.

顯示裝置2中，第二偏光結構30更包括一第三膠層350以及一第三保護層360，第三膠層350黏合至第二保護層330，第三保護層360設置於第三膠層350上，第三膠層350和第三保護層360位於第二膠層320和第二偏光膜310之間。本實施例中，第二膠層320、第三保護層360、第三膠層350、第二保護層330和第二偏光膜310的總厚度即為第二厚度d2。第一厚度d2厚度範圍可為25微米~285微米，較佳的厚度範圍為100微米~190微米。In the display device 2, the second polarizing structure 30 further includes a third adhesive layer 350 and a third protective layer 360. The third adhesive layer 350 is adhered to the second protective layer 330, and the third protective layer 360 is disposed on the third adhesive layer. On 350, the third adhesive layer 350 and the third protective layer 360 are located between the second adhesive layer 320 and the second polarizing film 310. In this embodiment, the total thickness of the second adhesive layer 320, the third protective layer 360, the third adhesive layer 350, the second protective layer 330, and the second polarizing film 310 is the second thickness d2. The first thickness d2 may have a thickness ranging from 25 μm to 285 μm, and a preferred thickness range is from 100 μm to 190 μm.

以下係就實施例作進一步說明。以下係列出數個實施例與比較例的偏光結構的結構細節、力矩數值及漏光測試結果，以說明應用本揭露內容所製得之顯示裝置的特性，其中以厚度為0.5mm的玻璃基板取代顯示面板以進行以下的測試及特性量測。然而以下之實施例僅為例示說明之用，而不應被解釋為本揭露內容實施之限制。The embodiments are further described below. The following series presents the structural details, moment values, and light leakage test results of the polarized structures of several examples and comparative examples to illustrate the characteristics of the display device produced by applying this disclosure. A glass substrate with a thickness of 0.5 mm is used instead of the display. Panel for the following tests and characteristic measurements. However, the following embodiments are for illustrative purposes only and should not be construed as limitations on the implementation of the disclosure.

以下實施例1～4和比較例1的玻璃基板之長寬比例為16：9，玻璃基板的尺寸為272.3mm x 153.17mm，吸收軸長度L₀ 為272.3mm，吸收軸長度L₉₀ 為153.17mm；實施例6～8和比較例2的玻璃基板之長寬比例為21：9，玻璃基板的尺寸為287.16mm x 123.07mm，吸收軸長度L₀ 為287.16mm，吸收軸長度L₉₀ 為123.07mm，且外層保護層240的厚度和外層保護層340的厚度均為40微米；翹曲結果則表示樣品在經過所述條件處理後之邊緣翹曲突起的高度。其餘相關數據請參照表1。The glass substrates of the following Examples 1 to 4 and Comparative Example 1 have a length-to-width ratio of 16: 9, the dimensions of the glass substrate are 272.3mm x 153.17mm, the absorption shaft length L ₀ is 272.3mm, and the absorption shaft length L ₉₀ is 153.17mm. ; The ratio of length to width of the glass substrates of Examples 6 to 8 and Comparative Example 2 is 21: 9, the size of the glass substrate is 287.16mm x 123.07mm, the absorption axis length L ₀ is 287.16mm, and the absorption axis length L ₉₀ is 123.07mm The thickness of the outer protective layer 240 and the thickness of the outer protective layer 340 are both 40 micrometers; the warpage result indicates the height of the warped protrusions on the edges of the sample after the conditions are processed. Please refer to Table 1 for other related data.

表1 Table 1

表1(續) Table 1 (continued)

綜上所述，雖然本發明已以實施例揭露如上，然其並非用以限定本發明。本發明所屬技術領域中具有通常知識者，在不脫離本發明之精神和範圍內，當可作各種之更動與潤飾。因此，本發明之保護範圍當視後附之申請專利範圍所界定者為準。In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

1、2‧‧‧顯示裝置1, 2‧‧‧ display device

10‧‧‧顯示面板10‧‧‧Display Panel

10A‧‧‧第一表面10A‧‧‧first surface

10B‧‧‧第二表面10B‧‧‧Second surface

20‧‧‧第一偏光結構20‧‧‧First polarized structure

30‧‧‧第二偏光結構30‧‧‧Second polarizing structure

110‧‧‧長度110‧‧‧ length

120‧‧‧寬度120‧‧‧Width

210‧‧‧第一偏光膜210‧‧‧first polarizing film

220‧‧‧第一膠層220‧‧‧ the first adhesive layer

230‧‧‧第一保護層230‧‧‧first protective layer

240、340‧‧‧外層保護層240, 340‧‧‧ Outer protective layer

310‧‧‧第二偏光膜310‧‧‧Second polarizing film

320‧‧‧第二膠層320‧‧‧Second glue layer

330‧‧‧第二保護層330‧‧‧Second protective layer

350‧‧‧第三膠層350‧‧‧ third adhesive layer

360‧‧‧第三保護層360‧‧‧third protective layer

A1、A2‧‧‧吸收軸A1, A2‧‧‧‧Absorption axis

d1‧‧‧第一厚度d1‧‧‧first thickness

d2‧‧‧第二厚度d2‧‧‧second thickness

第1圖繪示根據本揭露內容之一實施例之一種顯示裝置的立體示意圖。第2圖繪示根據本揭露內容之一實施例之一種顯示裝置的剖面示意圖。第3圖繪示根據本揭露內容之另一實施例之一種顯示裝置的剖面示意圖。FIG. 1 is a schematic perspective view of a display device according to an embodiment of the disclosure. FIG. 2 is a schematic cross-sectional view of a display device according to an embodiment of the disclosure. FIG. 3 is a schematic cross-sectional view of a display device according to another embodiment of the disclosure.

Claims

一種顯示裝置，包括：一顯示面板，具有一第一表面和一第二表面，該第二表面相對於該第一表面；一第一偏光結構，設置於該顯示面板的該第一表面上，該第一偏光結構包括一第一偏光膜，且該第一偏光結構具有一第一厚度；以及一第二偏光結構，設置於該顯示面板的該第二表面上，該第二偏光結構包括一第二偏光膜，且該第二偏光結構具有一第二厚度，其中該第一偏光膜的吸收軸和該第二偏光膜的吸收軸係為彼此垂直；其中，該第一偏光膜具有一第一力矩τ1，該第二偏光膜具有一第二力矩τ2，該第一力矩τ1和該第二力矩τ2滿足以下式1、式2和式3： τ1=r1 x d1 x L₀ 式1； τ2=r2 x d2 x L₉₀ 式2； │τ1-τ2│≦0.5 式3 其中，r1係為該第一偏光膜的一第一收縮率，d1係為該第一厚度，L₀ 係為該第一偏光膜的吸收軸長度，r2係為該第二偏光膜的一第二收縮率，d2係為該第二厚度，L₉₀ 係為該第二偏光膜的吸收軸長度。A display device includes: a display panel having a first surface and a second surface opposite to the first surface; a first polarizing structure disposed on the first surface of the display panel, The first polarizing structure includes a first polarizing film, and the first polarizing structure has a first thickness; and a second polarizing structure is disposed on the second surface of the display panel. The second polarizing structure includes a A second polarizing film, and the second polarizing structure has a second thickness, wherein the absorption axis of the first polarizing film and the absorption axis of the second polarizing film are perpendicular to each other; wherein the first polarizing film has a first A moment τ1, the second polarizing film has a second moment τ2, the first moment τ1 and the second moment τ2 satisfy the following formulas 1, 2 and 3: τ1 = r1 x d1 x L ₀ formula 1; τ2 = r2 x d2 x L ₉₀ Formula 2; │τ1-τ2│ ≦ 0.5 Formula 3 where r1 is a first shrinkage of the first polarizing film, d1 is the first thickness, and L ₀ is the first The absorption axis length of a polarizing film, r2 is a second shrinkage rate of the second polarizing film, d2 Is the second thickness, and L ₉₀ is the absorption axis length of the second polarizing film.

如申請專利範圍第1項所述之顯示裝置，其中當該顯示面板的長度相對於寬度的一比例係為1.0～1.5，該第一力矩τ1和該第二力矩τ2的差值係為0 Nm (牛頓米)～0.4 Nm；或當該顯示面板的長度相對於寬度的一比例係為1.5～2，該第一力矩τ1和該第二力矩τ2的差值係為0 Nm～0.3 Nm。The display device according to item 1 of the scope of patent application, wherein when the ratio of the length of the display panel to the width is 1.0 to 1.5, the difference between the first moment τ1 and the second moment τ2 is 0 Nm (Newton meters) to 0.4 Nm; or when the ratio of the length of the display panel to the width is 1.5 to 2, the difference between the first moment τ1 and the second moment τ2 is 0 Nm to 0.3 Nm.

如申請專利範圍第1項所述之顯示裝置，其中當該顯示面板的長度相對於寬度的一比例係為2.0～2.3，該第一力矩τ1和該第二力矩τ2的差值係為0 Nm～0.4 Nm；或當該顯示面板的長度相對於寬度的一比例係為2.3～3.0，該第一力矩τ1和該第二力矩τ2的差值係為0 Nm～0.5 Nm。The display device according to item 1 of the scope of patent application, wherein when the ratio of the length of the display panel to the width is 2.0 to 2.3, the difference between the first moment τ1 and the second moment τ2 is 0 Nm ˜0.4 Nm; or when the ratio of the length of the display panel to the width is 2.3 to 3.0, the difference between the first moment τ1 and the second moment τ2 is 0 Nm to 0.5 Nm.

如申請專利範圍第1項所述之顯示裝置，其中該第一偏光結構更包括：一第一膠層，黏合至該顯示面板的該第一表面；以及一第一保護層，設置於該第一膠層上，其中該第一偏光膜設置於該第一保護層上。The display device according to item 1 of the scope of patent application, wherein the first polarizing structure further includes: a first adhesive layer adhered to the first surface of the display panel; and a first protective layer disposed on the first An adhesive layer, wherein the first polarizing film is disposed on the first protective layer.

如申請專利範圍第4項所述之顯示裝置，其中該第二偏光結構更包括：一第二膠層，黏合至該顯示面板的該第二表面；以及一第二保護層，設置於該第二膠層上，其中該第二偏光膜設置於該第二保護層上。The display device according to item 4 of the scope of patent application, wherein the second polarizing structure further includes: a second adhesive layer adhered to the second surface of the display panel; and a second protective layer disposed on the first On the two adhesive layers, the second polarizing film is disposed on the second protective layer.

如申請專利範圍第5項所述之顯示裝置，其中該第一厚度為該第一膠層、該第一保護層和該第一偏光膜的總厚度，且該第二厚度為該第二膠層、該第二保護層和該第二偏光膜的總厚度。The display device according to item 5 of the scope of patent application, wherein the first thickness is a total thickness of the first adhesive layer, the first protective layer, and the first polarizing film, and the second thickness is the second adhesive The total thickness of the layer, the second protective layer, and the second polarizing film.

如申請專利範圍第6項所述之顯示裝置，其中該第一厚度範圍為15微米~160微米，或/且該第二厚度範圍為15微米~160微米。The display device according to item 6 of the scope of patent application, wherein the first thickness ranges from 15 μm to 160 μm, or / and the second thickness ranges from 15 μm to 160 μm.

如申請專利範圍第5項所述之顯示裝置，其中該第二偏光結構更包括：一第三膠層，黏合至該第二保護層；以及一第三保護層，設置於該第三膠層上，其中該第三膠層和該第三保護層位於該第二膠層和該第二偏光膜之間。The display device according to item 5 of the scope of patent application, wherein the second polarizing structure further includes: a third adhesive layer adhered to the second protective layer; and a third protective layer disposed on the third adhesive layer Wherein, the third adhesive layer and the third protective layer are located between the second adhesive layer and the second polarizing film.

如申請專利範圍第8項所述之顯示裝置，其中，該第一厚度為該第一膠層、該第一保護層和該第一偏光膜的總厚度；且該第二厚度為該第二膠層、該第三保護層、該第三膠層、該第二保護層和該第二偏光膜的總厚度。The display device according to item 8 of the scope of patent application, wherein the first thickness is a total thickness of the first adhesive layer, the first protective layer, and the first polarizing film; and the second thickness is the second thickness. The total thickness of the adhesive layer, the third protective layer, the third adhesive layer, the second protective layer, and the second polarizing film.

如申請專利範圍第9項所述之顯示裝置，其中該第一厚度範圍為15微米~160微米，或/且該第二厚度範圍為25微米~285微米。The display device according to item 9 of the scope of patent application, wherein the first thickness ranges from 15 μm to 160 μm, or / and the second thickness ranges from 25 μm to 285 μm.

如申請專利範圍第1項所述之顯示裝置，其中該第一厚度與該第二厚度的差值係為0微米到170微米之間；且/或該第一偏光膜的該第一收縮率r1與該第二偏光膜的該第二收縮率r2分別獨立為0N~8N。The display device according to item 1 of the patent application range, wherein a difference between the first thickness and the second thickness is between 0 μm and 170 μm; and / or the first shrinkage rate of the first polarizing film r1 and the second shrinkage rate r2 of the second polarizing film are independently 0N to 8N.

如申請專利範圍第1項所述之顯示裝置，其中該顯示面板係為一IPS液晶顯示面板或一VA液晶顯示面板。The display device according to item 1 of the scope of patent application, wherein the display panel is an IPS liquid crystal display panel or a VA liquid crystal display panel.

如申請專利範圍第1項所述之顯示裝置，更包括：二外層保護層，分別設置於該第一偏光膜的外側以及該第二偏光膜的外側。The display device according to item 1 of the patent application scope further includes: two outer protective layers, which are respectively disposed on the outside of the first polarizing film and the outside of the second polarizing film.