TW201819996A - 保護蓋板 - Google Patents
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Abstract
一種保護蓋板,係包括一基材以及一塗佈層。該基材之厚度範圍係為60至120微米,該基材之平面相差值範圍係為6000至12000。該塗佈層係塗佈於該基材之上。其中該保護蓋板具有一第一方向以及一第二方向,該第一方向係為該保護蓋板之機械方向,該第二方向係垂直於該第一方向,該第一方向之拉伸應力範圍係為50至130兆帕斯卡,該第二方向之拉伸應力範圍係為140至300兆帕斯卡,藉由該基材的平面相差值範圍係為6000至12000,使一入射光之穿透光平均分佈到該保護蓋板之可視區,降低反射光之相位差,以改善彩虹紋以及提升在一偏光鏡下的可視性。
Description
本發明係為一種保護蓋板,特別是一種藉由該基材的平面相差值範圍係為6000至12000,使穿透光平均分佈到可視區,以改善彩虹紋以及提升偏光鏡下的可視性之保護蓋板。
目前觸控面板保護蓋板大多使用強化玻璃,但無撓折特性,無法應用在可撓折產品上,因此尋求取代玻璃蓋板之替代材,同時具可撓,光學,物理硬度等特性。
中華民國專利第I457635號,係揭露一種均勻平面相差的延遲膜,是以等規指數(isotactic index)在85%以上的單聚丙烯樹脂所製造,具有非常小的零波長色散性,並具有於特定部位的平面相差(Re)值與平均值相差±5nm範圍內的均勻性。又,以這種具有零波長色散性的延遲膜與具有負波長色散性的其他延遲膜層疊而製造出具有正波長色散性的疊層光學膜。
然而,上述專利之穿透光並未平均分佈到可視區,而未解決光學上彩虹紋效果以及偏光鏡下的可視性之問題。
請參考圖1所示,由於塗佈層和基材之折射率不匹配,使得入射光之產生具有相位差之反射光1以及反射光2,具有相位差之反射光1以及反射光2被使用者目測觀察時,即產生彩虹紋。
因此,如何設計出不但可取代玻璃之塑膠保護蓋板,且兼具可撓特性以及表面硬度,更能夠解決塑膠材質容易造成彩虹紋以及提升偏光鏡下的可視性效果,即成為相關設備廠商以及研發人員所共同期待的目標。
本發明人有鑑於習知技術之觸控面板保護蓋板大多使用強化玻璃,但無撓折特性,無法應用在可撓折產品上之缺失,乃積極著手進行開發,以期可以改進上述既有之缺點,經過不斷地試驗及努力,終於開發出本發明。
本發明之目的,係提供一種具有撓折特性,且可以改善彩虹紋以及提升偏光鏡下的可視性之保護蓋板。
為了達成上述之目的,本發明之保護蓋板,係包括一基材以及一塗佈層。
該基材之厚度範圍係為60至120微米,該基材之平面相差值範圍係為6000至12000。
該塗佈層係塗佈於該基材之上。
其中該保護蓋板具有一第一方向以及一第二方向,該第一方向係為該保護蓋板之機械方向,該第二方向係垂直於該第一方向,該第一方向之拉伸應力範圍係為50至130兆帕斯卡,該第二方向之拉伸應力範圍係為140至300兆帕斯卡。
藉由該基材的平面相差值範圍係為6000至12000,使一入射光之穿透光平均分佈到該保護蓋板之可視區,降低反射光之相位差,以改善彩虹紋以及提升在一偏光鏡下的可視性。
為使熟悉該項技藝人士瞭解本發明之目的,兹配合圖式將本發明之較佳實施例詳細說明如下。
請參考圖2所示,本發明之保護蓋板(1),係包括一基材(10)以及一塗佈層(11)。
本發明之保護蓋板(1)係應用於一觸控裝置(2),該觸控裝置(2)中央係包括一撓折線(20)。
該基材(10)之厚度範圍係為60至120微米,該基材(10)之平面相差值範圍係為6000至12000。
該塗佈層(11)係塗佈於該基材(10)之上。
其中該保護蓋板(1)具有一第一方向(MD)以及一第二方向(TD),MD係為機械方向(Machine Direction)的縮寫,TD係為垂直於機械方向(Transverse Direction)的縮寫,因此該第一方向(MD)係為該保護蓋板(1)之機械方向,該第二方向(TD)係垂直於該第一方向(MD),該第一方向(MD)之拉伸應力範圍係為50至130兆帕斯卡,該第二方向(TD)之拉伸應力範圍係為140至300兆帕斯卡,以改善彩虹紋以及提升偏光鏡下的可視性。
其中該基材(10)之平面相差值Re =(nx -ny) ×D,在此,nx 是表示薄膜平面的最大折射率之地上軸X軸方向折射率,ny 是與該地上軸垂直方向Y軸的折射率,D是薄膜厚度。因此,調整材料X軸與Y軸拉伸比例,改變X軸與Y軸的折射率,藉此方法將兩軸的折射率差值變大,可使平面相差值Re提高。
在本發明之一較佳實施例中,該第一方向(MD)之拉伸應力係為120兆帕斯卡。
在本發明之一較佳實施例中,該第二方向(TD)之拉伸應力係為300兆帕斯卡。
在本發明之一較佳實施例中,該基材(10)之材料係為聚醯亞胺(Polyimide,PI)或聚對苯二甲酸乙二醇酯(Polyethylene Terephthalate,PET)或聚萘二甲酸乙二醇酯(Polyethylene Naphthalate,PEN)其中之一。
在本發明之一較佳實施例中,該第一方向(MD)以及該第二方向(TD)係互相垂直。
請參考圖2、圖3以及圖4所示,在相同的該基材(10)上,該塗佈層(11)硬度越高,撓折能力越小。
在本發明之一較佳實施例中(圖2),該保護蓋板(1)之撓折直徑(Ф)係為10毫米,該塗佈層(11)硬度係為3H(日規JIS-5600,750公克),因此可兼顧撓折特性與表面硬度,進一步來說,該塗佈層(11)硬度係通過JIS測試鉛筆3H硬度之測試,該測試鉛筆3H的荷重砝瑪係為750公克。
在本發明之一較佳實施例中,該基材(10)之厚度係為80微米,且平面相差值係大於或等於8000,使穿透光平均分佈到可視區(圖3),以解決光學上彩虹紋效果以及提升偏光鏡下的可視性。
請參考圖2、圖5所示,在該塗佈層(11)之硬度係為日規(JIS-5600,750g)3H,以及該保護蓋板(1)之撓折直徑係為10毫米的情況下,同時對該第一方向(MD)以及該第二方向(TD)進行撓折測試,該第二方向(TD)可承受五萬次以上之拉應力變化且該塗佈層(11)無異變,該第一方向(MD)僅能承受不到五千次之拉應力變化,該塗佈層(11)即發生裂痕。
因此本發明之保護蓋板(1)係應用於一觸控裝置(2)時,該第二方向(TD)需相同於該觸控裝置(2)之撓折方向,以避免該塗佈層(11)產生裂痕。 本發明不但藉由該保護蓋板(1)之撓折直徑(Ф)為10毫米,該塗佈層(11)硬度為3H(日規JIS-5600,750g),以兼顧撓折特性與表面硬度,此外,穿過雙折射體的光線會因波長間的穿透率不一之故、産生穿透光的偏差,Re越大,波峰與波谷越密集,不同波長下穿透率鑑別越小,進而使彩虹紋狀況淡化,藉由該基材的平面相差值範圍係為6000至12000,使一入射光之穿透光平均分佈到該保護蓋板之可視區,降低反射光之相位差,以改善彩虹紋以及提升在一偏光鏡下的可視性。再者,其結構型態並非所屬技術領域中之人士所能輕易思及而達成者,實具有新穎性以及進步性無疑。
透過上述之詳細說明,即可充分顯示本發明之目的及功效上均具有實施之進步性,極具產業之利用性價值,且為目前市面上前所未見之新發明,完全符合發明專利要件,爰依法提出申請。唯以上所述著僅為本發明之較佳實施例而已,當不能用以限定本發明所實施之範圍。即凡依本發明專利範圍所作之均等變化與修飾,皆應屬於本發明專利涵蓋之範圍內,謹請 貴審查委員明鑑,並祈惠准,是所至禱。
(1)‧‧‧保護蓋板
(10)‧‧‧基材
(11)‧‧‧塗佈層
(2)‧‧‧觸控裝置
(20)‧‧‧撓折線
MD‧‧‧第一方向
TD‧‧‧第二方向
Ф‧‧‧撓折直徑
圖1係先前技術之保護蓋板產生彩虹紋之示意圖; 圖2係本發明之在第二方向拉伸應力之結構示意圖; 圖3係本發明之撓折直徑與硬度之關係示意圖; 圖4係本發明之光線透過率與波長之關係示意圖;以及 圖5係本發明之應力與應變之關係示意圖。
Claims (10)
- 一種保護蓋板,係應用於一觸控裝置,該觸控裝置中央係包括一撓折線,該保護蓋板係包括: 一基材,厚度範圍係為60至120微米,平面相差(Re)值範圍係為6000至12000;以及 一塗佈層,係塗佈於該基材之上; 其中該保護蓋板具有一第一方向以及一第二方向,該第一方向係為該保護蓋板之機械方向,並平行於該撓折線,該第二方向係垂直於該第一方向,該第一方向之拉伸應力範圍係為50至130兆帕斯卡,該第二方向之拉伸應力範圍係為140至300兆帕斯卡,藉由該基材的平面相差值範圍係為6000至12000,使一入射光之穿透光平均分佈到該保護蓋板之可視區,降低反射光之相位差。
- 如申請專利範圍第1項所述之保護蓋板,其中該保護蓋板之撓折直徑係為10毫米。
- 如申請專利範圍第1項所述之保護蓋板,其中該塗佈層之硬度係為3H(日規JIS-5600,750g)。
- 如申請專利範圍第2項所述之保護蓋板,其中該塗佈層之硬度係為3H(日規JIS-5600,750g)。
- 如申請專利範圍第1項或第2項或第3項或第4項所述之保護蓋板,其中該第一方向之拉伸應力係為120兆帕斯卡。
- 如申請專利範圍第5項所述之保護蓋板,其中該第二方向之拉伸應力係為300兆帕斯卡。
- 如申請專利範圍第1項或第2項或第3項或第4項所述之保護蓋板,其中該第二方向之拉伸應力係為300兆帕斯卡。
- 如申請專利範圍第1項或第2項或第3項或第4項所述之保護蓋板,其中該基材之平面相差值係大於或等於8000。
- 如申請專利範圍第5項所述之保護蓋板,其中該基材之平面相差值係大於或等於8000。
- 如申請專利範圍第6項所述之保護蓋板,其中該基材之材料係為聚醯亞胺或聚對苯二甲酸乙二醇酯或聚萘二甲酸乙二醇酯其中之一。
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| CN201611051080.9A CN106527814A (zh) | 2016-11-23 | 2016-11-23 | 保护盖板 |
| ??201611051080.9 | 2016-11-23 |
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| CN114815347A (zh) * | 2021-01-27 | 2022-07-29 | 苏州璨鸿光电有限公司 | 液晶面板 |
| CN114859573A (zh) * | 2022-04-22 | 2022-08-05 | 深圳市晶联星科技有限公司 | 偏光镜片及应用 |
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| US7084944B2 (en) * | 2000-05-15 | 2006-08-01 | Fuji Photo Film Co., Ltd. | Optical compensatory sheet comprising a biaxially stretched cellulose acetate film, polarizing plate and liquid crystal display |
| TWI268372B (en) * | 2004-03-26 | 2006-12-11 | Nitto Denko Corp | IPS mode liquid crystal display to realize a high contrast ratio over a wide range by laminating a polarizing plate and a retardation film to form an optical film |
| US20060134400A1 (en) * | 2004-12-17 | 2006-06-22 | Nitto Denko Corporation | Hard-coated film and method of manufacturing the same |
| US7390099B2 (en) * | 2004-12-22 | 2008-06-24 | Nitto Denko Corporation | Hard-coated antiglare film and method of manufacturing the same |
| JP2006220770A (ja) * | 2005-02-08 | 2006-08-24 | Nippon Oil Corp | 液晶フィルムおよび液晶表示素子 |
| JP5709311B2 (ja) * | 2010-06-25 | 2015-04-30 | グンゼ株式会社 | 透明面状体及び透明タッチパネル |
| JP5472464B2 (ja) * | 2011-05-18 | 2014-04-16 | 東洋紡株式会社 | 液晶表示装置、偏光板および偏光子保護フィルム |
| KR101397702B1 (ko) * | 2011-12-26 | 2014-05-22 | 제일모직주식회사 | 편광판 및 이를 포함하는 액정 표시 장치 |
| JP6264367B2 (ja) * | 2013-02-20 | 2018-01-24 | 凸版印刷株式会社 | 透明導電性フィルム及びこれを備えたタッチパネル並びに表示デバイス |
| WO2014167816A1 (ja) * | 2013-04-10 | 2014-10-16 | 日本ゼオン株式会社 | 静電容量式タッチパネル付き表示装置 |
| JP2015225129A (ja) * | 2014-05-26 | 2015-12-14 | 富士フイルム株式会社 | ポリエステルフィルムおよびその製造方法、偏光板、画像表示装置、ハードコートフィルムならびにタッチパネル |
| KR102375190B1 (ko) * | 2014-11-24 | 2022-03-17 | 삼성디스플레이 주식회사 | 스트레처블 도전 패턴 및 스트레처블 장치 |
| KR101900530B1 (ko) * | 2014-11-26 | 2018-09-20 | 삼성에스디아이 주식회사 | 편광판 및 이를 포함하는 액정표시장치 |
| KR102383097B1 (ko) * | 2015-08-27 | 2022-04-07 | 삼성디스플레이 주식회사 | 플렉서블 표시 장치의 커버 윈도우 및 이를 포함하는 플렉서블 표시 장치 |
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| CN106527814A (zh) | 2017-03-22 |
| US10499501B2 (en) | 2019-12-03 |
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