JP6735865B2 - タッチパネルの直接パターニング方法およびそのタッチパネル - Google Patents
タッチパネルの直接パターニング方法およびそのタッチパネル Download PDFInfo
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- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
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- 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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- H05K2203/05—Patterning and lithography; Masks; Details of resist
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Description
フォトリソグラフィ工程を実行することは、除去領域およびリザーブ領域を画定するためにポジ型の感光性層および予備硬化層を露光することと、現像液を用いて、除去領域上のポジ型の感光性層、予備硬化層および金属ナノワイヤ層を除去することを含む。
この出願は、2018年3月2日に中国で出願された中国特許出願第201810175535.0号の優先権を主張し、ここに本明細書の一部として援用する。
Claims (18)
- タッチパネルの直接パターニング方法であって、
前記直接パターニング方法は、
表示領域および周辺領域を有する基板を提供し、前記周辺領域には周辺回路が配置され、前記周辺回路はボンディングパッドを有し、
前記表示領域と前記周辺回路を含む前記周辺領域上に金属ナノワイヤ層を配置し、前記金属ナノワイヤ層は複数の金属ナノワイヤを有し、
前記金属ナノワイヤ上に、感光性の予備硬化層を形成するためにコート層を予備硬化し、
除去領域とリザーブ領域を画定するために前記予備硬化層を露光し、前記除去領域の前記予備硬化層および前記金属ナノワイヤ層を現像液によって除去して、前記表示領域に配置されるタッチセンシング電極を形成し、且つ前記周辺領域に配置される前記ボンディングパッドを露出し、前記タッチセンシング電極は前記周辺回路に電気的に接続され、且つ前記タッチセンシング電極は前記予備硬化層および前記金属ナノワイヤ層を含む、フォトリソグラフィ工程を行い、
前記予備硬化層を硬化する工程を含むタッチパネルの直接パターニング方法。 - 更に、第2除去工程において、前記除去領域の前記金属ナノワイヤ層を完全に除去する工程を含む請求項1に記載の方法。
- 前記第2除去工程は、前記除去領域の前記金属ナノワイヤ層を完全に除去するために、有機溶剤またはアルカリ溶液を機械的プロシージャと組み合わせて用いる工程を含む請求項2に記載の方法。
- 前記第2除去工程は、前記除去領域の前記金属ナノワイヤ層を完全に除去するために接着剤除去法を含む、請求項2に記載の方法。
- 前記金属ナノワイヤ層上に前記予備硬化層を配置した後、更に、前記予備硬化層上にポジ型の感光性層を配置する工程を更に含み、
前記フォトリソグラフィ工程は、
前記ポジ型の感光性層および前記予備硬化層を露光して、前記除去領域および前記リザーブ領域を画定し、
前記除去領域の前記ポジ型の感光性層、前記予備硬化層および前記金属ナノワイヤ層を現像液によって除去する工程を行う請求項1〜4のいずれかに記載の方法。 - 前記ポジ型の感光性層の感光性は、前記予備硬化層の感光性よりも高い、請求項5に記載の方法。
- 更に、前記ポジ型の感光性層を除去する工程を備える請求項5又は6に記載の方法。
- 前記除去領域の位置は、前記ボンディングパッドの位置に対応し、且つ前記除去領域の前記予備硬化層および前記金属ナノワイヤ層の除去は、前記ボンディングパッド上の前記予備硬化層および前記金属ナノワイヤ層を除去する工程を含む請求項1〜7のいずれかに記載の方法。
- 前記除去領域の前記予備硬化層および前記金属ナノワイヤ層の除去は、前記タッチセンシング電極の隣接するタッチセンシング電極間に非導電性領域を形成することを含む、請求項1〜8のいずれかに記載の方法。
- 前記非導電性領域は間隙を有するか、または前記非導電性領域がパーコレーション閾値より低い濃度を有する前記金属ナノワイヤ層を含む、請求項9に記載の方法。
- 表示領域および周辺領域を有する基板と、
前記基板上に配置されるポリマー層および金属ナノワイヤ層と、
ボンディングパッドを有し、前記周辺領域に配置される周辺回路と、を備え、
前記ポリマー層は、前記ポリマー層の露光後に除去領域およびリザーブ領域を形成するように画定され、
前記表示領域のタッチセンシング電極は、前記除去領域の前記ポリマー層および前記金属ナノワイヤ層を、現像液により除去することによって形成され、
前記ボンディングパッドは、前記ポリマー層および前記金属ナノワイヤ層から露出され、
前記タッチセンシング電極は前記周辺領域に電気的に接続される、タッチパネル。 - 前記金属ナノワイヤ層は、複数の金属ナノワイヤを有し、前記金属ナノワイヤは、前記リザーブ領域で前記ポリマー層に埋め込まれて、導電性ネットワークを形成し、前記表示領域の前記ポリマー層および前記金属ナノワイヤ層は、一体的に前記タッチセンシング電極を形成している請求項11に記載のタッチパネル。
- 前記ポリマー層は感光性である請求項11又は12に記載のタッチパネル。
- 前記ポリマー層は約200nm〜約400nmの厚みを有する請求項11〜13のいずれかに記載のタッチパネル。
- 前記金属ナノワイヤ層および前記周辺回路は、前記表示領域および前記周辺領域との間の境界で接続構造を形成する請求項11〜14のいずれかに記載のタッチパネル。
- 前記タッチセンシング電極は前記周辺領域に延在され、且つ前記周辺回路を覆い、
前記タッチセンシング電極は前記ボンディングパッドを被覆しない、請求項11〜15のいずれかに記載のタッチパネル。 - 更に、前記タッチセンシング電極の隣接するタッチセンシング電極間に非導電性領域を有する請求項11〜16のいずれかに記載のタッチパネル。
- 前記非導電性領域は間隙を有する、または前記非導電性領域がパーコレーション閾値より低い濃度を有する前記金属ナノワイヤ層を含む、請求項17に記載のタッチパネル。
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CN110221731B (zh) * | 2018-03-02 | 2023-03-28 | 宸鸿光电科技股份有限公司 | 触控面板的直接图案化方法及其触控面板 |
CN109992163B (zh) * | 2019-04-15 | 2023-01-03 | 业成科技(成都)有限公司 | 触控感测模组及其制作方法以及应用其的电子装置 |
CN110119225B (zh) * | 2019-05-20 | 2022-05-10 | 业成科技(成都)有限公司 | 触控面板 |
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