TWI220882B - Method of constructing flexible membrane circuit - Google Patents

Method of constructing flexible membrane circuit Download PDF

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TWI220882B
TWI220882B TW088116819A TW88116819A TWI220882B TW I220882 B TWI220882 B TW I220882B TW 088116819 A TW088116819 A TW 088116819A TW 88116819 A TW88116819 A TW 88116819A TW I220882 B TWI220882 B TW I220882B
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Taiwan
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circuit
layer
carrier sheet
substrate
transfer
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TW088116819A
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Bastiani Norman P De
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Chartpak Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/12Transfer pictures or the like, e.g. decalcomanias
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/40Forming printed elements for providing electric connections to or between printed circuits
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B44DECORATIVE ARTS
    • B44CPRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/16Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
    • B44C1/165Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
    • B44C1/17Dry transfer
    • B44C1/1733Decalcomanias applied under pressure only, e.g. provided with a pressure sensitive adhesive
    • B44C1/1737Decalcomanias provided with a particular decorative layer, e.g. specially adapted to allow the formation of a metallic or dyestuff on a substrate unsuitable for direct deposition
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/10Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
    • H05K3/20Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
    • H05K3/207Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern using a prefabricated paste pattern, ink pattern or powder pattern
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0266Marks, test patterns or identification means
    • H05K1/0269Marks, test patterns or identification means for visual or optical inspection
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/03Use of materials for the substrate
    • H05K1/0393Flexible materials
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/16Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors
    • H05K1/162Printed circuits incorporating printed electric components, e.g. printed resistors, capacitors or inductors incorporating printed capacitors
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/01Dielectrics
    • H05K2201/0104Properties and characteristics in general
    • H05K2201/0108Transparent
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/02Fillers; Particles; Fibers; Reinforcement materials
    • H05K2201/0275Fibers and reinforcement materials
    • H05K2201/0284Paper, e.g. as reinforcement
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/01Tools for processing; Objects used during processing
    • H05K2203/0147Carriers and holders
    • H05K2203/0156Temporary polymeric carrier or foil, e.g. for processing or transferring
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/02Details related to mechanical or acoustic processing, e.g. drilling, punching, cutting, using ultrasound
    • H05K2203/0278Flat pressure, e.g. for connecting terminals with anisotropic conductive adhesive
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/05Patterning and lithography; Masks; Details of resist
    • H05K2203/0502Patterning and lithography
    • H05K2203/0531Decalcomania, i.e. transfer of a pattern detached from its carrier before affixing the pattern to the substrate
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2203/00Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
    • H05K2203/16Inspection; Monitoring; Aligning
    • H05K2203/166Alignment or registration; Control of registration
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00Apparatus or processes for manufacturing printed circuits
    • H05K3/38Improvement of the adhesion between the insulating substrate and the metal
    • H05K3/386Improvement of the adhesion between the insulating substrate and the metal by the use of an organic polymeric bonding layer, e.g. adhesive
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/914Transfer or decalcomania

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Laminated Bodies (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Structure Of Printed Boards (AREA)

Description

1220882 五、發明說明(1) 發明背景和概要 柔性膜電路用途廣泛。其中有例如利用指壓作動之輸 入裝置,以供資料登錄、控制設定等。典型上,此種裝置 涉及柔性膜,設有外部可目視的圖形,諸如數字墊片、啟 閉開關等,操作者可在柔性膜外側,於選定圖形元件施以 指壓,進行所需操作。此種柔性膜電路通常是使用印刷電 路原理構成,本質上較為複雜。 生產柔性膜電路之典型程序,涉及製造聚酯薄膜,以 接續層的電氣功能性墨水(導電性和電介質)印刷。典型 的導電性墨水以銀或石墨為顏料,雖然亦可採用其他金屬 ,諸如金、鎳和銅。導電性墨水直接印在聚_薄膜表面, 形成電氣通路,構成電路或開關。極簡單的電路可包括單 層導電性墨水,以預定電氣佈署施加,附有連接器。使用 多層導電性墨水圖型,亦可構成更複雜的電路配置,有電 介質層適度交織。如此製成的薄膜通常稱為「靜態層」。 無論簡單或複雜的多層靜態層往往粘合第二薄膜,稱 為「圖形層」。圖形層包含印在薄膜頂側的開關圖形,以 及導電性印在背面的適度圖形之導電性電路。本發明可直 接印刷或經由轉印體產生圖形層。圖形層和靜態層與適當 隔體、圓蓋、尾部等積層,以構成完整的功能性柔性膜電 路或開關。 本發明係針對生產柔性膜和類似電路之改進組件和技 術,其方式可大為提高電路設計和生產之多樣性和可行性 。更具體而言,本發明針對提供電氣功能性粘性轉印體產
1220882 五、發明說明(2) 品,其中對載體片或薄膜施加一層或多層的柔性膜電路用 之電路圖型。電路元件塗以適用的壓敏性粘膠,再以離型 劑加以保護。如此形成的電路可隨後藉剝下保護性離型紙 ,利用如今暴露的壓敏性粘膠,把電路轉印粘著於基材, 而施加於所需基材。於粘膠安裝電路後可剝下的載體片, 以透明為宜,或至少半透明,故可從載體片透視到電路圖 型,以方便與要安裝之基材適當對準。 本發明衍生許多重要特點,包括:電氣功能性電路可 比使用習知技術,轉印到更廣泛的困難基材。亦可提供電 氣功能性粘性轉印體,用來修補現有的柔性膜電路。另外 ,設想電氣功能性粘性轉印體產品,可製成各種各樣的「 標準」組件連接器圖型條紋、双排條紋、絕緣體條紋、肘 管、圈環、終端條紋等,可方便電路設計家使用,例如製 備和試驗原型電路。本發明另外可用來形成導電性粘性轉 印體,用於諸如電磁干擾(EMI )、無線電頻率干擾(RFI ), 和待殊屏蔽中的靜電散逸(ESD)。 本發明其他特點和優點由如下參照附圖所示較佳具體 例之詳述,即可明白。 圖式簡單說明 第1圖為本發明電氣功能性粘性轉印體產品之簡化斷 面圖; 第2圖類似第1圖,表示粘性轉印體產品之簡化型; 第3圖為類似第1圖之斷面圖,表示施加多層電路之更 複雜粘性轉印體產品;
第6頁 1220882 五、發明說明(3) 於接Γ基圖材為類似第1圖之斷面圖,表示第1圖之電路施加 弟5圖為類似第4圖之辭 ._ 層粘性轉印體產$。 Θ ’表不對接受基材施加多 佳具體例明 ,以塑膠5::宜先t : : ’ 1〇指載體片#,在第1圖中 物。適用乙:括單一聚合物或共聚 /丁二稀、聚碳酸酯等,壓出成度/上烯、乙烯系、苯乙稀 吋(ο ηπ» 、『η 塗出成缚膜型’厚度範圍以〇· 002 或半透明。*010吋(0·2 5 9fflm)為佳。載體片10以透明 體產σ | 下述可知,若對接受基材施加粘性轉印 電回介質,電路圖型,包括轉印墨水11、導電(或 質)層1 2,和壓破性粘膠層丨3。 般公知的網印法實施。 層U 13以本身為一 ,心ίΐ11由在熱塑性載體片1〇上絹印並乾燥後顯示 a,二良好抗拉強度,和良好離型特性之成份所 。一般而§ ,轉印墨水1 1層形成具有非導電性特性, 而’對於某些用途,需要並可提供導電特性。 、般而σ ,轉印墨水之形成是可使載體薄膜表面選擇 1潤濕,只利用物理的靜電表面相吸,而非化學結合,即 可粘著於表面。此舉使乾燥形成之轉印墨水容易=載體片 =離,並使電路元件容易粘性轉印到接受基材。轉印墨水 從載體片剝離的力量,按壓敏膠帶擬議試驗法PSTC第i號
第7頁 1220882 五、發明說明(4) ^ 所述測得,每吋在2 _ 4克範圍。因此,轉印墨水的特定級 成份必須經選擇,並符合載體片本身的物理性能。溶劑'、 成膜樹脂和添加劑的排列,必須以轉印墨水不粘結於載 片之方式選擇和配製。 — 轉印墨水1 1層以預定電路圖型施於載體片1 〇,係使用 每对1 0 0 — 3 0 0絲的篩目之聚酯或不銹鋼布網,直接印在栽 體片表面’提供厚度在〇.〇〇01吋(〇 〇〇254111111)至〇〇〇〇3时( 0 · 0 0 7 6mm )所需範圍之乾薄膜。絹印墨水的風乾可在室溫 進行為期4 一 8小時。印刷載體片亦可在乾燥隧道内,於溫 度 1 3 0 - 1 9 0 °F ( 5 2 - 8 8 °C )烘乾 4 5 - 7 5 秒。
電氣功能層1 2利用網印技術直接施加於轉印墨水11的 印刷圖案上。視特定用途,需要導電性和絕緣性途徑。此 等途控可為鬲度導電性、電阻性或絕緣性,主要視電路設 計而定。導電性層1 2主要包括熱塑性、熱固性或紫外線熟 化性樹脂系統,混配入導電性和電介質絹印墨水内。一般 而言,熱固性樹脂為導電性墨水所最需要,而紫外線熟化 性樹脂係電介質性墨水所最需要。此等墨水杜邦公司(電 子材料部)和Ache son膠體公司有售。
導電性墨水通常稱為聚合厚膜組成物,一般是以銀、 石墨 '銅 '錫,或其組合物為顏料,加上添加劑。採用熱 熟性材料時,在室溫風乾或在提高中度溫度烘乾’以除去 溶劑,即可達成熟化。採用熱固法樹脂時,是在提高溫度 的加熱烘箱内,除去溶劑,並使系統的有機成份交聯,而 達成熟化。熟化周期為溫度和時間的函數。代表例為··在
第8頁 1220882 五、發明說明(5) 140卞(60。〇 為 2 小時;在 2l2°F(10(rc)為 3〇_ 45 分鐘;在 240°F (115°C )為1 — 2分鐘。只有在聚合物厚膜組成物已適 當乾燥和熟化後,才展現最佳性能。此等性能尤指:(㈧所 需程度的導電係數’(b)粘著性,(〇適用性,(d)所需硬 度’(e )耐溫性,(f )耐磨耐刮性,(g)耐溶劑性。
電氣功能性墨水層1 2,是直接施加於轉印墨水層丨丨上 。因此,電氣功能性墨水1 2必須粘結於轉印墨水層丨丨,而 不影響其薄層性能。電氣功能性墨水的優點是利用網印技 術實施,利用篩目在每吋1 6 0 — 32 5絲範圍的聚酯或不銹鋼 網,使用耐溶劑性乳化液,施加厚度範圍為〇 · 〇 〇 〇 8吋( 〇.〇20_)至0.0〇15吋(0.038随),熟化(乾燥)電氣功能性 墨水厚度典型上為0.0002吋(〇.〇〇51mm)至00006吋(〇〇15 mm)之範圍。在此項操作中,宜使用硬度6〇_8〇的抗溶劑性 聚胺酯擠壓器。
當電氣功能性墨水為電介質材料時,需使導電性途徑 彼此絕緣’在導電性途徑交叉或以其他方式接觸時,以^ 微不同的材料為佳。以採用紫外線熟化性丨〇〇%固體之電介 質墨水為佳。係由單體、寡聚物、光引發劑、顏料和添加 ,組成。光引發劑吸收在200 — 40 〇nffl範圍的紫外線輕射, 寡聚和單體開始聚合,形成含有顏料和添加劑之電介質聚 合物«。未熟化電介質性墨水以網印法實施為宜,利用筛 目在每吋200 — 400線範圍的聚酯或不銹鋼。施加材料達成 熟化厚度為0· 001吋(〇· 002 54mm)至〇· 〇12吋(〇· 0 30随)。熟 化電介質宜顯示絕緣電阻或電介質強度。 …、
1220882 五、發明說明(6) 壓敏性 種此類壓敏 能性圖型1 2 枯膠1 3上施 利用第 敏性粘膠層 亦可為各種 陶瓷、金屬 ’轉印體產 明或半透明 準。在適當 上未示)之 當轉印 片10,如第 可與施加於 膜、轉印層 、包膠和粘 枯膠層1 3可為粘性轉印體產品交易上八 性粘膠之一。粘膠利用網印技術施加二:,各 上,與電氣功能性層1 2之圖型相同。功 加矽酮離型紙丨4,保護到產品準備 =敏性 1圖之轉印體產品時,除去離型 ^止。 13於所需基材44。基材44可為例如聚酿知膜加壓 各樣的其他材料,包含紙狀材料、布 '姑但 、塑膠等。在壓敏性粘膠13與基材“接 品之電路圖型可與基材適當對準。最好 ^ ^載體片10,讓使用者可經載體片透视所$ = 情況下,亦可利用在外部可充分看清標示子 不透明載體,可與基材適當對準。 圖 體產品-已轉印並粘著於基材44時,可剝下載 4圖所不,暴露轉印墨水層11。所製成之電路 基材44稱為「圖形層」(圖上未示)的另一薄 1 j、導電層1 2和粘膠層1 3,按照已知原理積層 結0
新轉印體產品特別需要的另一型,如第2圖所示。在 第2圖具體例中,載體片15由熱和化學安定性載體基材μ 構成。載體基材16可為安定性塑膠材料,諸如聚丙烯、鉄 弗月聚對苯一甲酸乙二酯 '聚萘二甲酸乙二酯、聚醯胺 、玉衣氧玻璃等’壓出成厚度在0.00145吋(0.0036 8_)至 0: 010吋(〇· 0254mm)程度之平坦膜。基材16亦可由紙材料 形成,諸如植物性羊皮紙、強化牛皮紙等。紙基材基本重
第10頁 1220882 五、發明說明(7) 量宜在每令500張(24136”,609.611111^914.4111111)在 2 0-40 磅( 9 - 1 8公斤)範圍。 不論載體基材1 6係由膜或紙形成’在施加功能性電路 元件的表面,具有聚合物塗膜1 7。施加之聚合物塗膜為較 薄層,以 0.0 0 0 0 5 吋( 0.0 0 1 2 7mm)至 0.0 0 0 2 吋( 0.0 0 5mm)厚 度範圍為佳。係由不溶於導電性印刷媒質和粘膠配方内典 型上所用溶劑之實質上非延展性材料所形成。此等性能可 見於許多交聯熱固性聚合物,諸如聚乙烯基丁醛一蜜胺、 聚乙烯基甲醛一酚、尿素、甲醛、環氧一蜜胺、丙烯酸系 、丙烯酸系一蜜胺等。改質之交聯矽酮聚合物塗料亦可用 。聚合物塗料必須有很低之極限伸長率,按照ASTM D638 試驗方法,需在0. 5-1. 0%範圍。 本發明轉印體產品内可用的載體基材1 6和聚合物塗膜 1 7,於溶劑、聚合物塗膜、載體材料之間應有測不出的互 相作用。例如在聚合物塗膜表面施加各種化學溶劑稀釋劑 ,以及網印時常用的化學化合物,並容許其蒸發,在表面 上即看不到可檢知的物理或化學效果。此等溶劑、稀釋劑 和其他化學化合物,包含礦油精、丁基溶纖素、乙酸正丁 酉旨、1 -硝基丙烧、庚烧 '己烧、丙蒙1、丁酮、環己烧、甲 苯、二甲苯、乙酸乙酯、卡必醇乙酸酯、異佛爾酮、甲基 異丁基甲酮、1,4-二噁烷、乙醇、異丙醇、正丁醇、四氫 呋喃、二氣甲烷、三氣乙烯、丁醇、環己酮、双丙酮醇、 苯二甲酸二丁酯、芳族1〇〇、三甲苯基磷酸酯、varsol 1 、丙二醇曱醚、二丙二醇甲醚 '乙二醇丁醚、乙二醇乙醚
1220882 (8) 醇、乙酸甲醚、二乙二醇、甲醚、VM + P石腦油、 丁;酯、辛基二苯基磷酸酯,為其中一部份。 多用途方面,以第2圖具體例之複合載體膜15為 高溫抵抗性較大,化學安定性較高。 3圖具體例中,單一粘性轉印體產品内具有多數 路元件。在第3圖改進中,載體片10或15具有接 頂到底依序包括一層轉印墨水1 8,一層導電性墨 層電介質2 0,第二層導電性墨水2 1,最後一層2 2 粘膠。在產品未決定應用於選定基材時,壓敏性 加離型紙2 3。 第3圖所示多層係巧合,須知接續層可配置在需 的不同電路圖型。 ,在使用本發明粘性轉印體產品之電路構造中, 品是上下重疊,以形成多層電路。例如在第5圖 基材2 4施加第一轉印體產品,包括轉印體墨水2 5 氣功能性材料2 6,和一層壓敏性粘膠2 7。在第一 五、發明說明 、二丙二 苯二甲酸 在許 佳,因其 在第 官能性電 續層,從 水 1 9,一 為壓敏性 粘膠上施 雖然 要而適當 同理 轉印體產 配置中, 、一層電 轉印體產品上再實施第二轉印體產品。於第5圖中,第二 轉印體產品包括一層轉印油墨2 8、一層電氣功能性材料2 9 ,以及一層壓敏性粘膠3 0。在第5圖中,第二層以相對於 第一層的非一致性形態實施。在若干情況下,刻意在直立 相鄰的導電性元件交叉點設有電氣連接點、轉印油墨層2 5 和壓敏性墨水層3 0可配製成具有充分導電係數,在直立方 向提供合理的導電性途徑。 本發明產品和程序提供新穎而極有益的方式,以製造
第12頁

Claims (1)

1220882 案號 88116819 月 曰 修正 六、申請專利範圍 4.如申請專利範圍第1項之方法,其中 (a)於該轉印體產品粘性安裝第二個粘性轉印體產品 ,以提供多層電路者。
第15頁 2001.06.21.016
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