TW201346671A - 抗刮觸控感測器 - Google Patents

抗刮觸控感測器 Download PDF

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Publication number
TW201346671A
TW201346671A TW101139207A TW101139207A TW201346671A TW 201346671 A TW201346671 A TW 201346671A TW 101139207 A TW101139207 A TW 101139207A TW 101139207 A TW101139207 A TW 101139207A TW 201346671 A TW201346671 A TW 201346671A
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Taiwan
Prior art keywords
protective coating
coating solution
touch sensor
scratch
coating
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TW101139207A
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English (en)
Inventor
Robert J Petcavich
Danliang Jin
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Unipixel Displays Inc
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Application filed by Unipixel Displays Inc filed Critical Unipixel Displays Inc
Publication of TW201346671A publication Critical patent/TW201346671A/zh

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    • G—PHYSICS
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    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
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    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/26—Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/32—Processes for applying liquids or other fluent materials using means for protecting parts of a surface not to be coated, e.g. using stencils, resists
    • B05D1/322—Removable films used as masks
    • B05D1/327—Masking layer made of washable film
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
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    • B05D3/061—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using U.V.
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    • B05D3/068—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation using ionising radiations (gamma, X, electrons)
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    • B41F19/005—Apparatus or machines for carrying out printing operations combined with other operations with means for applying specific material other than ink with means for applying metallic, conductive or chargeable material
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
    • C09D175/04—Polyurethanes
    • C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
    • C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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Abstract

一種用於製造抗刮觸控感測器之方法包含：(1)將非聚合物保護塗層溶液塗覆至觸控感測器；及(2)藉由使該保護塗層溶液固化而形成交聯聚合物結構。

Description

抗刮觸控感測器 【相關申請案之交叉參考】
本申請案主張2011年10月25日申請之題為「Touch Sensor Patterned Electrodes with Scratch Resistance Layer」且以引用之方式併入本文中的美國臨時專利申請案第61/551,030號之優先權。
【背景】
觸控螢幕技術已變成諸如平板電腦及行動電話之許多現代電子器件的重要組件。通常，觸控螢幕技術併有組成顯示器之部分之電阻性或電容性感測器層的使用。歸因於使用者與螢幕之直接接觸的程度有所增加，利用此技術之器件的螢幕通常傾向於受到損害。取決於所使用之材料及螢幕之用途，此損害典型地包括螢幕自身之刮痕及損壞兩者。結果，電阻性及電容性觸控感測器通常包括置放於顯示結構之頂部上的半透明電絕緣罩，以便保護及隔離觸控感測器面板，使其免受環境條件、磨損、氧化及有害化學試劑的影響。
電阻性及電容性觸控螢幕技術需要既透明且在功能上又導電的材料。氧化銦錫(ITO)為觸控螢幕感測器應用之當前最廣泛使用的金屬氧化物，此係因為氧化銦錫(ITO)為光學上透明的且具有相當好的導電性質。ITO常用以製成液晶顯示器、平板顯示器、觸控面板、太陽電池板及飛機風擋 的透明導電塗層。在電阻性觸控螢幕中，當使用者藉由手指或觸控筆觸摸螢幕時，ITO膜被推動以與ITO玻璃接觸，從而產生允許處理器計算觸控事件之座標且處理對觸摸點之適當回應的電壓信號。儘管ITO之使用為熟知且已接受之技術，但其並不理想。除ITO之脆性、缺少可撓性及與其他金屬相比較而言低的電導率外，ITO之主要問題為銦之有限供應及升高的成本。
如先前所陳述，在觸控螢幕面板中使用玻璃或聚酯層作為保護罩為典型的。聚酯膜在具有撓性時可僅提供最小等級之硬度。具體而言，此等膜提供範圍為約2H至4H之表面硬度。結果，聚酯膜易受刮痕損害。另一方面，能夠產生高於7H之鉛筆硬度讀數的玻璃罩的確提供極其良好之刮痕保護。然而，此等玻璃罩並不提供高等級之可撓性，且因此在由硬表面衝擊時易受損壞。
【摘述】
本發明係關於一種抗刮觸控感測器，其包含：透明介電基板，第一導電層，其形成於該基板之第一側上；第二導電層，其形成於該基板之第二側上；及抗刮保護塗層，其塗覆至該第一導電層及該第二導電層中之至少一者，該塗層包含交聯聚合物結構。
其他具體實例係有關一種製造抗刮觸控感測器之方法，該方法包含：(1)將保護塗層溶液塗覆至觸控感測器；及(2)藉由使該保護塗層溶液固化而形成交聯聚合物結構。
【詳細說明】
為了本發明之例示性具體實例的詳細描述，現將參看隨附圖式。
以下論述係有關本發明之各種具體實例。儘管此等具體實例中之一或多者可為較佳的，但所揭示之具體實例不應被解釋為或以其他方式用作限制包括申請專利範圍的本發明之範疇。此外，熟習此項技術者應理解，以下描述具有廣泛應用，且任何具體實例之論述僅意謂例示該具體實例，且不意欲暗示包括申請專利範圍的本發明之範疇限於該具體實例。
如本文中所使用，詞「大約」意謂「加或減10%」。另外，如本文中所使用，詞「透明」意謂允許90%或更大之透射率內的光波之透射的任何材料。
圖1展示典型電容性觸控螢幕100之橫截面表示。觸控螢幕100包含透明介電基板102，該透明介電基板102在兩側上塗佈有兩個透明導電材料層104。在典型配置中，透明導電材料104係由ITO組成，然而，透明導電材料104亦可由導電塑膠、銀(Ag)、金(Au)、鋁合金及其他材料組成。
頂部透明電絕緣罩106借助於透明電絕緣黏著劑108黏著至透明導電材料104之頂層。用於透明且電絕緣罩106之合適材料的實例包括聚酯膜、玻璃及聚碳酸酯塑膠。另外，合適之透明電絕緣黏著劑108之實例為3M #8142。
現參看圖2，展示根據較佳具體實例之電容觸控感測器螢幕200之俯視圖，螢幕200一般包含薄的可撓性透明介電基板210、水平軸線203、垂直軸線201、透明導電之電 容性格柵202，及透明導電之電容性尾部204。
如在圖2及圖3中最佳地展示，格柵202進一步由在平行於水平軸線203之方向上延伸且在介電基板210之一側上的第一複數條導電線208組成。第二複數條導電線212在平行於垂直軸線201之方向上延伸且在介電基板210之對置側上。第一複數條導電線208及第二複數條導電線212藉由介電基板210隔離，且形成格柵202，該格柵202又實現對使用者與螢幕互動之點的辨識。導電電容性格柵202之實例可包含導電線之9×16或更大之陣列，其中表面積之範圍為約2.5 mm×2.5 mm至2.1 m×2.1 m。
格柵202亦可依據互電容原理操作，藉此格柵202在第一複數條導電線208中之每一者與第二複數條導電線212中之每一者的每一相交處形成電容器。舉例而言，9乘16陣列將具有144個獨立電容器。接著將電壓施加至第一複數條導電線208及第二複數條導電線212，使得使手指或導電觸控筆接近感測器之表面改變局部電場，此情形減小互電容。格柵上之每一個別點處的電容改變可藉由量測水平軸線203及垂直軸線201兩者上的電壓來量測以準確地判定觸摸位置。結果，互電容可允許可同時準確地追蹤多個手指、手掌或觸控筆之多點觸摸操作。
返回參看圖2，尾部204包含安置於介電基板210之一側上且與第一複數條導電線208接觸的電引線214及電連接器216。類似地，尾部204亦包含安置於介電基板212之對置側上且與第二複數條導電線212接觸的電引線215及 電連接器217。
在一些具體實例中，螢幕200之第一複數條導電線208、第二複數條導電線212、電引線214、電連接器216、電引線215及電連接器217可由銅、銀、金、鎳、錫、鈀及導電聚合物組成。另外，在一些具體實例中，介電基板210可包含聚對苯二甲酸伸乙酯(PET)膜、金屬、紙或玻璃。具體而言，基板204之合適材料可包括DuPont/Teijin Melinex 454及Dupont/Teijin Melinex ST505，後者為針對涉及熱處理之製程所特別設計的熱穩定膜。
觸控螢幕器件中塗覆之大多數保護塗層展現基於聚合物之分子結構。聚合物為由使數千個相對小之分子(稱為單體)化學交聯所產生的相對大之分子。由於單體之分子間力較弱，單體可以氣體、液體或結構上較弱之分子結構的形式存在。
圖4展示直鏈聚合物結構A及交聯聚合物結構B之實例。如本文中所使用，術語「交聯」指代將一個單體或聚合物鏈鏈接至另一單體或聚合物鏈的化學鍵(共價鍵或離子鍵)。在典型聚合反應中，具有雙官能基之單體接合在一起以形成呈直鏈聚合物結構A之聚合物。然而，由含有直鏈聚合物結構A之基於聚合物之塗層製成的螢幕通常為不抗刮的。因此，為了增大塗層膜之抗刮性，需要增強聚合塗層之機械強度。
交聯聚合物結構B以三維結構鏈接在一起，該三維結構增大聚合物鏈內之分子間力(通常共價鍵)，且減小通常在 壓力下顯現為凹痕或擦傷(gouge)的聚合鏈鬆弛。因此，含有交聯聚合物結構B之基於聚合物之塗層膜將傾向於具有抗刮性質。
儘管對於交聯聚合物結構而言分子強度為較高的，但聚合物至基板或螢幕上之塗覆或塗佈經由溶液製程來進行可為不可能的。此係歸因於如下事實：交聯聚合物不可溶解於任何溶劑中，且在置放於溶劑中時可僅膨脹。塗層組合物正常需要呈液態，以允許分子更有效地移動及反應。具有低密度之材料(交聯材料)起黏性類液體凝膠的作用，而具有高密度交聯網之材料在固態下極具剛性。因此，為了在將塗層以液體形式塗覆至基板或螢幕之後達成交聯結構，有必要在塗覆塗層之後形成交聯結構。
本發明之具體實例使用基於並非源自聚合物鏈之交聯結構的抗刮保護塗層。實情為，塗層可由在不同接合點處同時發生反應以產生交聯三維聚合物結構的單體組成，該交聯三維聚合物結構展現極高交聯密度且因此展現抗刮特徵。具體而言，透明抗刮塗層可包含單官能及多官能丙烯酸單體及寡聚物。此塗層可塗覆於觸控感測器螢幕上，從而保護螢幕不受環境條件、化學試劑、磨耗、磨損、刮痕之損害，藉此消除對使用如圖1中所展示之額外隔離玻璃或PET罩106的需要。
現參看圖5，展示用於將透明抗刮塗層504塗覆至觸控感測器螢幕200之塗層塗覆系統500。塗層塗覆系統500一般包括進一步含有呈液態之透明塗層溶液503的容器502。 為了將保護塗層504塗覆至螢幕200，螢幕200可浸沒於含於容器502中之塗層溶液503中，且接著在恆定速度及溫度下取出以避免任何抖動。在一些具體實例中，僅格柵202需要保護塗層504，此係因為格柵202為使用者將互動的區域。因此，電引線214、215及電連接器216、217可能不需要保護，此係因為使用者並不與其互動。然而，在其他具體實例中，可將抗刮塗層504塗覆至電引線214、215及電連接器216、217之至少一部分。
簡要地參看圖7，展示螢幕200及塗層504之組合在通過上文於圖5中所描述之塗層塗覆系統500之後的等角視圖。
再次參看圖5，抗刮塗層504之厚度可至少部分藉由螢幕200自容器502之取出速度來界定。更具體而言，較快取出速度在流體有時間向下流回至容器502中之前將更多流體帶動至螢幕200之表面上。取出速度在一些具體實例中可自約1英吋/分鐘變化至1英呎/分鐘，而厚度範圍可為約5微米至50微米，其中20微米為較佳的。可影響抗刮塗層504之厚度的其他因素可包括塗層溶液503之黏度、密度、所使用溶劑之揮發度及固體含量。在一些具體實例中，抗刮塗層504展現70%至80%之固體含量與在約1%至約6%之範圍中的光引發劑濃度及約20%至30%溶劑的組合以調節黏度。溶劑至塗層溶液503中之添加並不影響抗刮塗層504之性質，此係因為溶劑在塗覆之後蒸發。
現參看圖6，在經由塗層塗覆系統500(圖5)將透明抗 刮塗層504塗覆至螢幕200之後，經由固化製程600使塗層504固化。固化製程600一般包括輸送機601及紫外線(UV)光源602。在操作期間，使螢幕200與塗層504之組合沿著輸送機601移動，使得UV光源602在螢幕200及塗層504之組合通過其時使塗層504固化。在一些具體實例中，UV光源602為將使塗層504能夠在極短時間週期內固化之工業級UVA光源。具體而言，固化可在大約0.1至2.0秒內發生。另外，在一些具體實例中，UV光源602具有約280 nm至480 nm之波長，其中目標強度在0.5 J/cm2至20.0 J/cm2之範圍中。此外，為了達成較高等級之交聯密度，上文所描述之UV光固化製程應在惰性氣體環境中或在實質上無氧氣之環境中進行。用於此製程之合適惰性氣體的實例為氮氣。
在其他具體實例中，抗刮塗層504之固化借助於熱固化製程來實現。在熱固化製程期間，螢幕200與塗層504之組合通過熱烘箱內之線式輸送機，藉此施加熱輻射以使抗刮塗層504固化且允許在抗刮塗層504中形成交聯聚合物結構。施加於抗刮塗層504上之熱輻射的溫度範圍可自約70℃至100℃，且歷時大約5秒至300秒的時間週期。此外，為了達成較高等級之交聯密度，上文所描述之熱固化製程應在惰性氣體環境中或在實質上無氧氣之環境中進行。用於此程序之合適惰性氣體的實例為氮氣或二氧化碳。
在另外其他具體實例中，抗刮塗層504之固化借助於將離子輻射施加至塗層504來實現。舉例而言，在所展示 之具體實例中，電子束(E-beam)固化製程用以使塗層504固化。電子束固化製程應用電子放電404來使抗刮塗層固化。更具體而言，電子束固化製程以受控劑量來利用高能電子，從而使聚合材料快速聚合及交聯。當使用電子束固化製程時，不需要在透明抗刮塗層504內使用熱或光引發劑，此係因為溶液內之電子充當引發劑。施加至抗刮塗層504之電子束劑量之範圍可為約0.5至5.0MRads。如同其他固化方法一樣，為了達成較高等級之交聯密度，上文所描述之電子束固化製程應在惰性氣體環境中或在實質上無氧氣之環境中進行。用於此程序之合適惰性氣體的實例為氮氣。
交聯密度指代給定聚合物內交聯鍵之百分比。此密度與反應時間及溫度相關。一般而言，較高強度及較快反應轉化成較高交聯密度。塗層504之交聯密度之範圍對於UV固化製程(實例：展示於圖6中之塗層塗覆系統500)可為約60%至70%，對於熱固化製程可為50%至60%，且對於E束固化製程可高達80%。按照前述內容，在考慮處理速度、成本及功率要求時，UV固化製程自製造觀點為有效固化方法。
現參看圖8，展示塗層塗覆系統800之替代具體實例。塗層塗覆系統500(圖5)使用浸漬塗佈方法，而替代塗層塗覆系統800使用柔版印刷或凹版印刷製程來將塗層溶液504塗覆至第一複數條導電線208。塗層塗覆系統一般包含捲出滾筒802、卷(web)清潔器804、柔版印刷模組809、UV光源816及捲取滾筒803。在操作期間，螢幕200自捲出滾筒 802展開，通過移除粉塵粒子及雜質之卷清潔器804，且進入將塗層504沈積於螢幕200之表面上的柔版印刷模組809。螢幕200與塗層504之組合接著移動通過UV光源816，如上文所描述，在UV光源816處，使塗層504固化且形成交聯聚合結構。最終，螢幕200與塗層504之組合沈積於捲取滾筒803上。下文將更詳細描述上文提及之步驟及模組。
柔版印刷模組809一般包括塗覆盤808、轉印滾筒810、網紋滾筒812、刮漿刀814及母版806。塗覆盤808含有一定量之塗層溶液503，且經定位使得含於塗覆盤808中之塗層溶液503的某部分隨著轉印滾筒810圍繞固定軸線旋轉而沈積至轉印滾筒810上。塗層溶液503接著在網紋滾筒812與轉印滾筒810接觸之點處自轉印滾筒810轉印至網紋滾筒812。在一些具體實例中，網紋滾筒812係由鋼或鋁芯建構，且其外表面由表面含有稱為小室(cell)之大量極精細凹坑的工業陶瓷覆蓋。
接著借助於刮漿刀814刮掉額外塗層。刮漿刀814置放於固定位置，使得在過量塗層被刮掉之後僅特定所要量之塗層溶液503保留在網紋滾筒812上。接著將所量測量之塗層溶液503沈積至主滾筒806上，該主滾筒806旋轉，使得塗層溶液503沈積於螢幕200之表面上。主滾筒810具有沿其外表面分佈之可與安置於螢幕200上之第一複數條導電線208之定向匹配的印刷圖案902，使得塗層溶液503可僅分佈於螢幕200之使用者將互動的區域上。在其他 具體實例中，將沿著螢幕200之整個表面均勻地印刷塗層溶液503。簡要地參看圖9，展示主滾筒806之具體實例之等角視圖，使得更詳細地呈現印刷圖案902。返回參看圖8，一旦螢幕200與塗層504之組合離開柔版印刷模組809，螢幕200與塗層504之組合便朝向UV光源816移動，使得塗層溶液504以與上文所描述之方式相同的方式固化。
參看圖10，展示螢幕200與塗層504之組合在通過上文在圖8中所描述之塗層塗覆系統800之後的等角表示。
現參看圖11，展示用於量測塗層504之表面硬度的鉛筆硬度測試1100，該鉛筆硬度測試1100遵循測試方法ASTM D3363。為了執行測試，自展現範圍為6B至9H之硬度的鉛筆集合選擇鉛筆1104。自最高硬度至最低硬度進行選擇，將第一鉛筆1104加載至量測小車1106中。用於此測試中之量測小車1106為可購自BAMR之Elcometer 3080。此量測儀器使鉛筆1104能夠維持於約7.5 N之恆定壓力下且維持於恰當角度，此情形增大測試之再現性。在加載有鉛筆1104情況下，使量測小車1106移動越過塗層504之表面。若鉛筆1104留下刮痕，則使用下一較軟鉛筆1104，且重複程序。將未留下刮痕之第一鉛筆1104的硬度數視為塗層504之鉛筆硬度。
使用自約5微米至50微米之厚度，量測由PET製成之基板膜1102之頂部上的塗層504之鉛筆硬度為自2H直至8H。塗覆至PET基板204之塗層202的效能特性展示於表1中。
以上論述意謂說明本發明之原理及各種具體實例。對於熟習此項技術者而言，一旦充分瞭解以上揭示內容，許多變化及修改將變得顯而易見。意欲將以下申請專利範圍解釋為包涵所有此等變化及修改。
圖1展示典型電容性觸控螢幕之橫截面表示；圖2展示替代電容觸控感測器螢幕之俯視圖；圖3展示在圖2中展示之電容觸控感測器螢幕之等角視圖；圖4展示根據本發明之具體實例的直鏈聚合物結構(A)以及交聯聚合物結構(B)兩者；圖5描繪根據本發明之具體實例的用於塗覆透明抗刮塗層之塗層塗覆系統的等角視圖；圖6展示根據本發明之具體實例的固化製程；圖7展示根據本發明之具體實例的具有透明抗刮塗層之觸控感測器螢幕的等角視圖；圖8描繪根據本發明之具體實例的用於塗覆透明抗刮 塗層之塗層塗覆的替代具體實例之示意圖；圖9展示根據本發明之具體實例的主滾筒之具體實例的等角視圖；圖10展示根據本發明之具體實例的具有透明抗刮塗層之觸控感測器螢幕之替代具體實例的等角視圖；及圖11展示用於對抗刮螢幕之表面進行鉛筆硬度測試的裝置。
200‧‧‧電容觸控感測器螢幕
201‧‧‧垂直軸線
202‧‧‧透明導電之電容性格柵
203‧‧‧水平軸線
204‧‧‧透明導電之電容性尾部
208‧‧‧導電線
210‧‧‧可撓性透明介電基板
212‧‧‧導電線
214‧‧‧電引線
215‧‧‧電引線
216‧‧‧電連接器
217‧‧‧電連接器

Claims (17)

  1. 一種抗刮觸控感測器，其包含：透明介電基板；第一導電層，其形成於該基板之第一側上；第二導電層，其形成於該基板之第二側上；及抗刮保護塗層，其塗覆至該第一導電層及該第二導電層中之至少一者，該塗層包含交聯聚合物結構。
  2. 如申請專利範圍第1項之抗刮觸控感測器，其中：該第一導電層進一步包含第一複數條導電線；且該第二導電層進一步包含第二複數條導電線。
  3. 如申請專利範圍第1項之抗刮觸控感測器，其中該抗刮保護塗層之交聯密度為至少50%。
  4. 一種用於製造抗刮觸控感測器之方法，其包含：將非聚合物保護塗層溶液塗覆至觸控感測器；及藉由使該保護塗層溶液固化來形成交聯聚合物結構。
  5. 如申請專利範圍第4項之方法，其中塗覆該非聚合物保護塗層包含塗覆單官能及多官能丙烯酸單體及寡聚物之溶液。
  6. 如申請專利範圍第4項之方法，其中使該保護塗層溶液固化係在惰性氣體之環境中進行。
  7. 如申請專利範圍第4項之方法，其中形成該交聯聚合物結構達成50%或更高之交聯密度。
  8. 如申請專利範圍第4項之方法，其進一步包含： 在該抗刮觸控感測器上形成第一複數條導電線；及在該抗刮觸控感測器上形成第二複數條導電線；其中該第一複數條導電線及該第二複數條導電線係分別安置於透明介電基板之第一側及第二側上。
  9. 如申請專利範圍第8項之方法，其中塗覆該非聚合物保護塗層溶液包含僅將該保護塗層溶液塗覆至該第一複數條導電線。
  10. 如申請專利範圍第4項之方法，其中塗覆該非聚合物保護塗層溶液包含將該觸控感測器螢幕浸漬至含有該保護塗層溶液之容器中。
  11. 如申請專利範圍第4項之方法，其中塗覆該非聚合物保護塗層溶液包含柔版印刷製程。
  12. 如申請專利範圍第4項之方法，其中塗覆該非聚合物保護塗層溶液包含狹縫型擠壓式或凹版印刷式塗佈技術。
  13. 如申請專利範圍第4項之方法，其中使該保護塗層溶液固化包含應用具有自280 nm至480 nm之波長的UV光源。
  14. 如申請專利範圍第4項之方法，其中使該保護塗層溶液固化包含將離子化輻射施加至該保護塗層溶液。
  15. 如申請專利範圍第14項之方法，其中施加該離子化輻射包含施加範圍為0.5毫拉德至5毫拉德之劑量的電子。
  16. 一種根據如申請專利範圍第4項之方法製成的抗刮觸控感測器螢幕。
  17. 如申請專利範圍第16項之抗刮觸控感測器螢幕，其中該非聚合物保護塗層溶液之該交聯密度在使該保護塗層溶液固化之後大於或等於50%。
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