JP6291570B2 - 電子素子における金属被覆のための銅合金障壁層およびキャッピング層 - Google Patents
電子素子における金属被覆のための銅合金障壁層およびキャッピング層 Download PDFInfo
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- JP6291570B2 JP6291570B2 JP2016517985A JP2016517985A JP6291570B2 JP 6291570 B2 JP6291570 B2 JP 6291570B2 JP 2016517985 A JP2016517985 A JP 2016517985A JP 2016517985 A JP2016517985 A JP 2016517985A JP 6291570 B2 JP6291570 B2 JP 6291570B2
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- capping layer
- touch panel
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- panel display
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Images
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Description
本出願は、2013年6月6日に出願された米国仮特許出願番号第61/831,865号に基づく利益および優先権を主張しており、その全体の開示は参考として本明細書中に本明細書によって援用される。
種々の実施形態では、本発明は、フラットパネルディスプレイおよびタッチパネルディスプレイ等の電子素子の金属被覆に関し、具体的には、そのような金属被覆のためのキャッピングおよび障壁層に関する。
フラットパネルディスプレイは、種々の市場に急速に普及しつつあり、現在、種々の器具、テレビ、コンピュータ、携帯電話、および他の電子素子において一般に利用されている。一般に使用されるフラットパネルディスプレイの一実施例は、薄膜トランジスタ(TFT)液晶ディスプレイ(LCD)またはTFT−LCDである。典型的TFT−LCDは、それぞれがLCDの画素またはサブ画素からの光の放出を制御する、TFTのアレイを含む。図1Aは、TFT−LCDに見出され得るように従来のTFT100の断面を描写する。示されるように、TFT100は、ガラス基板110上に形成されるゲート電極105を含む。ゲート絶縁体115は、ゲート電極105を上にある伝導性構造から電気的に絶縁する。活性層120は、典型的には、非晶質シリコンから成り、ゲート電極105の電気制御下、ソース電極125とドレイン電極130との間で電荷を伝導させ、伝導された電荷は、そこに接続される画素またはサブ画素(図示せず)の動作を制御する。ソース/ドレイン絶縁体132は、ソース電極125をドレイン電極130から電気的に絶縁し、TFT100を保護するようにシールする。示されるように、ゲート電極105、ソース電極125、およびドレイン電極130はそれぞれ、典型的には、障壁金属層135と、それを覆う金属導体層140とを含む。障壁135は、導体140と下にあるガラスおよび/またはシリコンとの間に良好な接着を提供し、その間の拡散を低減または防止する。
本発明の種々の実施形態によると、TFT−LCDおよびタッチパネルディスプレイ等の電子素子ならびにその中の金属相互配線および電極は、Cuと、タンタル(Ta)、ニオブ(Nb)、Mo、タングステン(W)、ジルコニウム(Zr)、ハフニウム(Hf)、レニウム(Re)、オスミウム(Os)、ルテニウム(Ru)、ロジウム(Rh)、Ti、バナジウム(V)、クロム(Cr)、またはニッケル(Ni)等の1つ以上の耐火金属元素との合金を含むか、または本質的にそれから成るキャッピングおよび/または障壁層を利用して製作される。1つ以上の耐火元素は、1〜50%の重量濃度で合金内に存在し得る。例示的実装では、合金障壁層は、直接、ガラスおよび/またはシリコンベースの層等の基板層上に形成され、Cu、銀(Ag)、アルミニウム(Al)、または金(Au)等の高伝導性金属を含むか、または本質的にそれから成る導体層が、それを覆って形成され、TFT構造内に種々の電極を形成する。別の例示的実装では、Cu、Ag、Al、および/またはAu等の高伝導性金属は、タッチパネルディスプレイ内の伝導性相互配線として利用され、CuとTa、Nb、Mo、W、Zr、Hf、Re、Os、Ru、Rh、Ti、V、Cr、またはNi等の1つ以上の耐火金属元素の合金を含むか、または本質的にそれから成る保護キャッピング層でキャッピングされる。1つ以上の耐火元素は、1〜50%の重量濃度(以下、重量%)で合金内に存在し得る。
例えば、本願発明は以下の項目を提供する。
(項目1)
薄膜トランジスタであって、
シリコンまたはガラスのうちの少なくとも1つを含む、基板と、
電極であって、
(i)前記基板上に配置される、Cuと、Ta、Nb、Mo、W、Zr、Hf、Re、Os、Ru、Rh、Ti、V、Cr、およびNiから成るリストから選択される1つ以上の耐火金属元素との合金を含む、障壁層と、
(ii)前記障壁層上に配置される、Cu、Ag、Al、またはAuのうちの少なくとも1つを含む、導体層と、
を含む、電極と、
を備える、薄膜トランジスタ。
(項目2)
前記基板は、ガラスを含む、項目1に記載の薄膜トランジスタ。
(項目3)
前記基板は、シリコンを含む、項目1に記載の薄膜トランジスタ。
(項目4)
前記基板は、非晶質シリコンを含む、項目3に記載の薄膜トランジスタ。
(項目5)
前記障壁層は、Cu、Ta、およびCrの合金を含む、項目1に記載の薄膜トランジスタ。
(項目6)
前記障壁層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目5に記載の薄膜トランジスタ。
(項目7)
前記障壁層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、項目5に記載の薄膜トランジスタ。
(項目8)
前記障壁層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、項目5に記載の薄膜トランジスタ。
(項目9)
前記障壁層は、Cu、Ta、およびTiの合金を含む、項目1に記載の薄膜トランジスタ。
(項目10)
前記障壁層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、項目9に記載の薄膜トランジスタ。
(項目11)
前記障壁層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、項目9に記載の薄膜トランジスタ。
(項目12)
前記障壁層は、Cu、Nb、およびCrの合金を含む、項目1に記載の薄膜トランジスタ。
(項目13)
前記障壁層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目12に記載の薄膜トランジスタ。
(項目14)
前記障壁層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、項目12に記載の薄膜トランジスタ。
(項目15)
(i)前記電極は、(a)前記障壁層の暴露された部分と、(b)前記導体層の暴露された部分と、(c)前記障壁層の暴露された部分と前記導体層の暴露された部分との間の界面を含む、側壁を備え、(ii)前記電極の側壁は、前記界面にもかかわらず、実質的に断絶がない、項目1に記載の薄膜トランジスタ。
(項目16)
前記基板は、前記障壁層からのCu拡散が実質的にない、項目1に記載の薄膜トランジスタ。
(項目17)
(i)前記障壁層は、粒界によって分離される複数の結晶粒を含み、(ii)前記粒界のうちの少なくとも1つは、その中に微粒子を含み、(iii)前記微粒子は、シリコンと前記耐火金属元素のうちの少なくとも1つの反応生成物を含む、項目1に記載の薄膜トランジスタ。
(項目18)
薄膜トランジスタの電極を形成する方法であって、
シリコンまたはガラスのうちの少なくとも1つを含む、基板を提供するステップと、
前記基板上に、Cuと、Ta、Nb、Mo、W、Zr、Hf、Re、Os、Ru、Rh、Ti、V、Cr、およびNiから成る群から選択される1つ以上の耐火金属元素との合金を含む、障壁層を堆積させるステップと、
前記障壁層上に、Cu、Ag、Al、またはAuのうちの少なくとも1つから成る、導体層を堆積させるステップと、
前記障壁層上に、マスク層を形成するステップと、
前記マスク層をパターン化し、前記導体層の一部を露出させるステップであって、前記マスク層の残りの部分は、少なくとも部分的に、前記電極の形状を画定する、ステップと、
その後、エッチング液を付与し、前記パターン化されたマスク層によってマスクされていない前記導体層および前記障壁層の部分を除去し、それによって、
(i)前記障壁層の暴露された部分と、(ii)前記導体層の暴露された部分と、(iii)前記障壁層の暴露された部分と前記導体層の暴露された部分との間の界面とを含み、
前記界面にもかかわらず、実質的に断絶がない、
前記電極の側壁を形成するステップと、
を含む、方法。
(項目19)
前記マスク層は、フォトレジストを含む、項目18に記載の方法。
(項目20)
前記エッチング液は、リン酸、酢酸、硝酸、および水の混合物を含む、項目18に記載の方法。
(項目21)
前記エッチング液は、50〜60重量%リン酸、15〜25重量%酢酸、3〜5重量%硝酸、および残りの水から本質的に成る、項目18に記載の方法。
(項目22)
前記エッチング液は、50重量%リン酸、25重量%酢酸、3重量%硝酸、および残りの水から本質的に成る、項目18に記載の方法。
(項目23)
前記パターン化されたマスク層の前記残りの部分を除去するステップをさらに含む、項目18に記載の方法。
(項目24)
(i)前記障壁層は、粒界によって分離される複数の結晶粒を含み、(ii)前記基板は、シリコンを含む、項目18に記載の方法。
(項目25)
前記粒界のうちの少なくとも1つ内に微粒子を形成するために十分な温度で前記電極をアニーリングするステップをさらに含み、前記微粒子は、シリコンと前記耐火金属元素のうちの少なくとも1つの反応生成物を含む、項目24に記載の方法。
(項目26)
前記基板は、ガラスを含む、項目18に記載の方法。
(項目27)
前記基板は、シリコンを含む、項目18に記載の方法。
(項目28)
前記基板は、非晶質シリコンを含む、項目27に記載の方法。
(項目29)
前記障壁層は、Cu、Ta、およびCrの合金を含む、項目18に記載の方法。
(項目30)
前記障壁層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目29に記載の方法。
(項目31)
前記障壁層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、項目29に記載の方法。
(項目32)
前記障壁層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、項目29に記載の方法。
(項目33)
前記障壁層は、Cu、Ta、およびTiの合金を含む、項目18に記載の方法。
(項目34)
前記障壁層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、項目33に記載の方法。
(項目35)
前記障壁層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、項目33に記載の方法。
(項目36)
前記障壁層は、Cu、Nb、およびCrの合金を含む、項目18に記載の方法。
(項目37)
前記障壁層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目36に記載の方法。
(項目38)
前記障壁層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、項目36に記載の方法。
(項目39)
タッチパネルディスプレイであって、
基板と、
(i)第1の方向に沿って延在するラインに配列され、(ii)前記基板上に配置される、複数の伝導性タッチパネル列センサと、
(i)第2の方向に沿って延在するラインに配列され、前記列センサのラインと交差し、(ii)前記基板上に配置される、複数の伝導性タッチパネル行センサと、
(i)列センサのラインと行センサのラインとの間の交差点に配置され、(ii)2つの行センサまたは2つの列センサを電気的に接続する、相互配線と、
を備え、前記相互配線は、
(i)Cu、Ag、Al、またはAuのうちの少なくとも1つを含む、導体層と、
(ii)前記導体層上に配置される、Cuと、Ta、Nb、Mo、W、Zr、Hf、Re、Os、Ru、Rh、Ti、V、Cr、およびNiから成るリストから選択される1つ以上の耐火金属元素との合金を含む、キャッピング層と、
を備える、タッチパネルディスプレイ。
(項目40)
前記相互配線は、列センサ上またはその下に延在し、2つの行センサを電気的に接続し、そして前記相互配線と前記列センサとの間に配置され、前記相互配線および前記列センサを電気的に絶縁する、絶縁層をさらに備える、項目39に記載のタッチパネルディスプレイ。
(項目41)
前記相互配線は、行セン上またはその下に延在し、2つの列センサを電気的に接続し、そして前記相互配線と前記行センサとの間に配置され、前記相互配線および前記行センサを電気的に絶縁する、絶縁層をさらに備える、項目39に記載のタッチパネルディスプレイ。
(項目42)
前記基板は、絶縁材料を含む、項目39に記載のタッチパネルディスプレイ。
(項目43)
前記基板は、ガラスを含む、項目39に記載のタッチパネルディスプレイ。
(項目44)
前記列センサおよび行センサは、実質的に透明である伝導性材料から成る、項目39に記載のタッチパネルディスプレイ。
(項目45)
前記列センサおよび行センサは、インジウムスズ酸化物を含む、項目39に記載のタッチパネルディスプレイ。
(項目46)
前記キャッピング層は、Cu、Ta、およびCrの合金を含む、項目39に記載のタッチパネルディスプレイ。
(項目47)
前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目46に記載のタッチパネルディスプレイ。
(項目48)
前記キャッピング層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、項目46に記載のタッチパネルディスプレイ。
(項目49)
前記キャッピング層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、項目46に記載のタッチパネルディスプレイ。
(項目50)
前記キャッピング層は、Cu、Ta、およびTiの合金を含む、項目39に記載のタッチパネルディスプレイ。
(項目51)
前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、項目50に記載のタッチパネルディスプレイ。
(項目52)
前記キャッピング層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、項目50に記載のタッチパネルディスプレイ。
(項目53)
前記キャッピング層は、Cu、Nb、およびCrの合金を含む、項目39に記載のタッチパネルディスプレイ。
(項目54)
前記キャッピング層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目53に記載のタッチパネルディスプレイ。
(項目55)
前記キャッピング層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、項目53に記載のタッチパネルディスプレイ。
(項目56)
(i)前記相互配線は、(a)前記キャッピング層の暴露された部分と、(b)前記導体層の暴露された部分と、(c)前記キャッピング層の暴露された部分と前記導体層の暴露された部分との間の界面とを含む、側壁を備え、(ii)前記電極の側壁は、前記界面にもかかわらず、実質的に断絶がない、項目39に記載のタッチパネルディスプレイ。
(項目57)
(i)前記キャッピング層は、粒界によって分離される複数の結晶粒を含み、(ii)前記粒界のうちの少なくとも1つは、その中に微粒子を含み、(iii)前記微粒子は、前記耐火金属元素のうちの少なくとも1つの集塊を含む、項目39に記載のタッチパネルディスプレイ。
(項目58)
タッチパネルディスプレイの相互配線を形成する方法であって、
(i)基板と、(ii)(a)第1の方向に沿って延在するラインに配列され、(b)前記基板上に配置される、複数の伝導性タッチパネル列センサと、(iii)(a)第2の方向に沿って延在するラインに配列され、前記列センサのラインと交差し、(b)前記基板上に配置される、複数の伝導性タッチパネル行センサとを備える、構造を提供するステップと、
少なくとも、列センサのラインと行センサのラインとの間の交差点に、絶縁体層を堆積させるステップと、
前記絶縁体層上に、Cu、Ag、Al、またはAuのうちの少なくとも1つを含む、導体層を堆積させるステップと、
前記導体層上に、Cuと、Ta、Nb、Mo、W、Zr、Hf、Re、Os、Ru、Rh、Ti、V、Cr、およびNiから成る群から選択される1つ以上の耐火金属元素との合金を含む、キャッピング層を堆積させるステップと、
前記キャッピング層上に、マスク層を形成するステップと、
前記マスク層をパターン化し、前記キャッピング層の一部を露出させるステップであって、前記マスク層の残りの部分は、少なくとも部分的に、前記相互配線の形状を画定する、ステップと、
その後、エッチング液を付与し、前記パターン化されたマスク層によってマスクされていない前記キャッピング層および前記導体層の部分を除去し、それによって、
(i)前記キャッピング層の暴露された部分と、(ii)前記導体層の暴露された部分と、(iii)前記キャッピング層の暴露された部分と前記導体層の暴露された部分との間の界面とを含み、
前記界面にもかかわらず、実質的に断絶がない、
前記相互配線の側壁を形成する、ステップと、
を含む、方法。
(項目59)
前記マスク層は、フォトレジストを含む、項目58に記載の方法。
(項目60)
前記エッチング液は、リン酸、酢酸、硝酸、および水の混合物を含む、項目58に記載の方法。
(項目61)
前記エッチング液は、50〜60重量%リン酸、15〜25重量%酢酸、3〜5重量%硝酸、および残りの水から本質的に成る、項目58に記載の方法。
(項目62)
前記エッチング液は、50重量%リン酸、25重量%酢酸、3重量%硝酸、および残りの水から本質的に成る、項目58に記載の方法。
(項目63)
前記パターン化されたマスク層の前記残りの部分を除去するステップをさらに含む、項目58に記載の方法。
(項目64)
前記キャッピング層は、粒界によって分離される複数の結晶粒を含む、項目58に記載の方法。
(項目65)
前記粒界のうちの少なくとも1つ内に微粒子を形成するために十分な温度で前記相互配線をアニーリングするステップをさらに含み、前記微粒子は、前記耐火金属元素のうちの少なくとも1つの集塊を含む、項目64に記載の方法。
(項目66)
前記基板は、絶縁材料を含む、項目58に記載の方法。
(項目67)
前記基板は、ガラスを含む、項目58に記載の方法。
(項目68)
前記列センサおよび行センサは、実質的に透明である伝導性材料を含む、項目58に記載の方法。
(項目69)
前記列センサおよび行センサは、インジウムスズ酸化物を含む、項目58に記載の方法。
(項目70)
前記キャッピング層は、Cu、Ta、およびCrの合金を含む、項目58に記載の方法。
(項目71)
前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目70に記載の方法。
(項目72)
前記キャッピング層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、項目70に記載の方法。
(項目73)
前記キャッピング層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、項目70に記載の方法。
(項目74)
前記キャッピング層は、Cu、Ta、およびTiの合金を含む、項目58に記載の方法。
(項目75)
前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、項目74に記載の方法。
(項目76)
前記キャッピング層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、項目74に記載の方法。
(項目77)
前記キャッピング層は、Cu、Nb、およびCrの合金を含む、項目58に記載の方法。
(項目78)
前記キャッピング層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、項目77に記載の方法。
(項目79)
前記キャッピング層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、項目77に記載の方法。
Claims (47)
- タッチパネルディスプレイであって、
基板と、
(i)第1の方向に沿って延在するラインに配列され、(ii)前記基板上に配置される、複数の伝導性タッチパネル列センサと、
(i)前記列センサのラインと交差し第2の方向に沿って延在するラインに配列され、(ii)前記基板上に配置される、複数の伝導性タッチパネル行センサと、
(i)列センサのラインと行センサのラインとの間の交差点に配置され、(ii)2つの行センサまたは2つの列センサを電気的に接続する、相互配線と、
を備え、前記相互配線は、
(i)Cu、Ag、Al、またはAuのうちの少なくとも1つを含む、導体層と、
(ii)前記導体層上に配置される、Cuと、Ta、Nb、Zr、Hf、Re、Os、Ru、Rh、Ti、V、およびCrから成るリストから選択される1つ以上の耐火金属元素との合金から本質的に成る、キャッピング層と、
を備える、タッチパネルディスプレイ。 - 前記キャッピング層は、Cuと、Ta、Nb、およびCrから成るリストから選択される1つ以上の耐火金属元素との合金から本質的に成る、請求項1に記載のタッチパネルディスプレイ。
- 前記相互配線は、列センサ上またはその下に延在し、2つの行センサを電気的に接続し、そして前記相互配線と前記列センサとの間に配置され、前記相互配線および前記列センサを電気的に絶縁する、絶縁層をさらに備える、請求項1に記載のタッチパネルディスプレイ。
- 前記相互配線は、行センサ上またはその下に延在し、2つの列センサを電気的に接続し、そして前記相互配線と前記行センサとの間に配置され、前記相互配線および前記行センサを電気的に絶縁する、絶縁層をさらに備える、請求項1に記載のタッチパネルディスプレイ。
- 前記基板は、絶縁材料を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記基板は、ガラスを含む、請求項1に記載のタッチパネルディスプレイ。
- 前記列センサおよび行センサは、実質的に透明である伝導性材料を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記列センサおよび行センサは、インジウムスズ酸化物を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、Cu、Ta、およびCrの合金を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、請求項9に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、請求項9に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、請求項9に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、Cu、Ta、およびTiの合金を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、請求項13に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、請求項13に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、Cu、Nb、およびCrの合金を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、請求項16に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、請求項16に記載のタッチパネルディスプレイ。
- (i)前記相互配線は、(a)前記キャッピング層の暴露された部分と、(b)前記導体層の暴露された部分と、(c)前記キャッピング層の暴露された部分と前記導体層の暴露された部分との間の界面とを含む、側壁を備え、(ii)前記電極の側壁は、前記界面にもかかわらず、実質的に断絶がない、請求項1に記載のタッチパネルディスプレイ。
- (i)前記キャッピング層は、粒界によって分離される複数の結晶粒を含み、(ii)前記粒界のうちの少なくとも1つは、その中に微粒子を含み、(iii)前記微粒子は、前記耐火金属元素のうちの少なくとも1つの集塊を含む、請求項1に記載のタッチパネルディスプレイ。
- タッチパネルディスプレイの相互配線を形成する方法であって、
(i)基板と、(ii)(a)第1の方向に沿って延在するラインに配列され、(b)前記基板上に配置される、複数の伝導性タッチパネル列センサと、(iii)(a)前記列センサのラインと交差し第2の方向に沿って延在するラインに配列され、(b)前記基板上に配置される、複数の伝導性タッチパネル行センサとを備える、構造を提供するステップと、
少なくとも、列センサのラインと行センサのラインとの間の交差点に、絶縁体層を堆積させるステップと、
前記絶縁体層上に、Cu、Ag、Al、またはAuのうちの少なくとも1つを含む、導体層を堆積させるステップと、
前記導体層上に、Cuと、Ta、Nb、Zr、Hf、Re、Os、Ru、Rh、Ti、V、およびCrから成る群から選択される1つ以上の耐火金属元素との合金から本質的に成る、キャッピング層を堆積させるステップと、
前記キャッピング層上に、マスク層を形成するステップと、
前記マスク層をパターン化し、前記キャッピング層の一部を露出させるステップであって、前記マスク層の残りの部分は、少なくとも部分的に、前記相互配線の形状を画定する、ステップと、
その後、エッチング液を付与し、前記パターン化されたマスク層によってマスクされていない前記キャッピング層および前記導体層の部分を除去し、それによって、
(i)前記キャッピング層の暴露された部分と、(ii)前記導体層の暴露された部分と、(iii)前記キャッピング層の暴露された部分と前記導体層の暴露された部分との間の界面とを含み、
前記界面にもかかわらず、実質的に断絶がない、
前記相互配線の側壁を形成する、ステップと、
を含む、方法。 - 前記キャッピング層は、Cuと、Ta、Nb、およびCrから成るリストから選択される1つ以上の耐火金属元素との合金から本質的に成る、請求項21に記載の方法。
- 前記マスク層は、フォトレジストを含む、請求項21に記載の方法。
- 前記エッチング液は、リン酸、酢酸、硝酸、および水の混合物を含む、請求項21に記載の方法。
- 前記エッチング液は、50〜60重量%リン酸、15〜25重量%酢酸、3〜5重量%硝酸、および残りの水から本質的に成る、請求項21に記載の方法。
- 前記エッチング液は、50重量%リン酸、25重量%酢酸、3重量%硝酸、および残りの水から本質的に成る、請求項21に記載の方法。
- 前記パターン化されたマスク層の前記残りの部分を除去するステップをさらに含む、請求項21に記載の方法。
- 前記キャッピング層は、粒界によって分離される複数の結晶粒を含む、請求項21に記載の方法。
- 前記粒界のうちの少なくとも1つ内に微粒子を形成するために十分な温度で前記相互配線をアニーリングするステップをさらに含み、前記微粒子は、前記耐火金属元素のうちの少なくとも1つの集塊を含む、請求項28に記載の方法。
- 前記基板は、絶縁材料を含む、請求項21に記載の方法。
- 前記基板は、ガラスを含む、請求項21に記載の方法。
- 前記列センサおよび行センサは、実質的に透明である伝導性材料を含む、請求項21に記載の方法。
- 前記列センサおよび行センサは、インジウムスズ酸化物を含む、請求項21に記載の方法。
- 前記キャッピング層は、Cu、Ta、およびCrの合金を含む、請求項21に記載の方法。
- 前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Cr、および残りのCuから本質的に成る、請求項34に記載の方法。
- 前記キャッピング層は、約5重量%Ta、約2重量%Cr、および残りのCuから本質的に成る、請求項34に記載の方法。
- 前記キャッピング層は、約2重量%Ta、約1重量%Cr、および残りのCuから本質的に成る、請求項34に記載の方法。
- 前記キャッピング層は、Cu、Ta、およびTiの合金を含む、請求項21に記載の方法。
- 前記キャッピング層は、1重量%〜12重量%Ta、1重量%〜5重量%Ti、および残りのCuから本質的に成る、請求項38に記載の方法。
- 前記キャッピング層は、約5重量%Ta、約2重量%Ti、および残りのCuから本質的に成る、請求項38に記載の方法。
- 前記キャッピング層は、Cu、Nb、およびCrの合金を含む、請求項21に記載の方法。
- 前記キャッピング層は、1重量%〜10重量%Nb、1重量%〜5重量%Cr、および残りのCuから本質的に成る、請求項41に記載の方法。
- 前記キャッピング層は、約5重量%Nb、約2重量%Cr、および残りのCuから本質的に成る、請求項41に記載の方法。
- 前記導体層は、Cu、Ag、またはAuのうちの少なくとも1つから本質的に成る、請求項1に記載のタッチパネルディスプレイ。
- 前記キャッピング層は、Cuと、Hf、Re、Os、Ru、およびRhから成るリストから選択される1つ以上の耐火金属元素との合金を含む、請求項1に記載のタッチパネルディスプレイ。
- 前記導体層は、Cu、Ag、またはAuのうちの少なくとも1つから本質的に成る、請求項21に記載の方法。
- 前記キャッピング層は、Cuと、Hf、Re、Os、Ru、およびRhから成るリストから選択される1つ以上の耐火金属元素との合金を含む、請求項21に記載の方法。
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US20140362307A1 (en) | 2014-12-11 |
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US9299472B2 (en) | 2016-03-29 |
US11392257B2 (en) | 2022-07-19 |
JP2016526233A (ja) | 2016-09-01 |
WO2014197661A1 (en) | 2014-12-11 |
KR101790861B1 (ko) | 2017-10-26 |
CN105264669A (zh) | 2016-01-20 |
US20180175075A1 (en) | 2018-06-21 |
TW201511290A (zh) | 2015-03-16 |
US20140363933A1 (en) | 2014-12-11 |
US20160172386A1 (en) | 2016-06-16 |
TWI594438B (zh) | 2017-08-01 |
US20210208738A1 (en) | 2021-07-08 |
US9929187B2 (en) | 2018-03-27 |
US11640222B2 (en) | 2023-05-02 |
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