TW202206917A - 薄膜電晶體基板與液晶顯示面板 - Google Patents

薄膜電晶體基板與液晶顯示面板 Download PDF

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TW202206917A
TW202206917A TW109126748A TW109126748A TW202206917A TW 202206917 A TW202206917 A TW 202206917A TW 109126748 A TW109126748 A TW 109126748A TW 109126748 A TW109126748 A TW 109126748A TW 202206917 A TW202206917 A TW 202206917A
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metal layer
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許琪
王濤
肖晟
王慧
柳智忠
戴孟杰
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大陸商深超光電（深圳）有限公司
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Abstract

一種薄膜電晶體基板，具有顯示區和圍繞顯示區的非顯示區，薄膜電晶體基板包括基板以及位於所述基板上且位於所述非顯示區的靜電防護結構。該靜電防護結構包括放電金屬層與透明導電層，放電金屬層與透明導電層部分重疊且電性連接。所述透明導電層與所述放電金屬層分別從二者重疊的部分反向延伸，且所述透明導電層延伸的寬度大於所述放電金屬層延伸的寬度。本發明還提供一種包括所述薄膜電晶體基板的液晶顯示面板。

Description

薄膜電晶體基板與液晶顯示面板
本發明涉及一種薄膜電晶體基板與液晶顯示面板。
顯示面板的製備過程中會産生靜電，受顯示面板中基板不導電性質的限制，靜電無導出途徑，被集聚在顯示面板內部，進而發生靜電放電現象，破壞顯示面板內部結構，影響顯示面板的正常工作。
習知的靜電防護結構大多數採用金屬線路加寬設計，金屬線路的加寬可增加靜電放電的路徑，大面積的金屬吸收靜電，靜電藉由整條金屬線路消散，但由於對金屬線路的加寬，金屬的不透光性會影響面板邊框處的框膠固化能力。因此如何兼顧靜電釋放（Electro-Static Discharge，ESD）防護能力及框膠固化的穩定性，已經成爲生産製造過程中的急需解決的問題。
鑒於此，有必要提供一種薄膜電晶體基板，所述薄膜電晶體基板包括靜電防護結構，在加强ESD防護能力的同時不會影響顯示面板邊框處的框膠的固化作用。
一種薄膜電晶體基板，具有顯示區與圍繞所述顯示區的非顯示區，包括： 基板，以及位於所述基板上且位於所述非顯示區的靜電防護結構，所述靜電防護結構包括放電金屬層及與所述放電金屬層部分重疊且電性連接的透明導電層； 所述透明導電層與所述放電金屬層分別從二者重疊的部分反向延伸，且所述透明導電層延伸的寬度大於所述放電金屬層延伸的寬度。
本發明還提供一種液晶顯示面板，包括： 所述薄膜電晶體基板、對應所述薄膜電晶體基板設置的彩色濾光基板以及設置於所述薄膜電晶體基板與所述彩色濾光基板之間的液晶層。
相對於習知技術，所述薄膜電晶體基板包括靜電防護結構，所述靜電防護結構包括所述放電金屬層，以及與所述放電金屬層部分重疊且電性連接的所述透明導電層，所述透明導電層延伸的寬度大於所述放電金屬層延伸的寬度。所述透明導電層和所述放電金屬層皆用於靜電放電。因此，相對於單獨使用所述放電金屬層靜電放電，利用透光性的透明導電層加寬了所述靜電防護結構的寬度，而不需要加寬不透光性的放電金屬層，進而避免所述放電金屬層加寬造成面板邊框處框膠固化不足的現象。
附圖中示出了本發明的實施例，本發明可以藉由多種不同形式實現，而並不應解釋爲僅局限於這裏所闡述的實施例。相反，提供這些實施例是爲了使本發明更爲全面和完整的公開，並使本領域的技術人員更充分地瞭解本發明的範圍。
實施例一
參閱圖1，本發明第一實施例的薄膜電晶體基板100，其具有顯示區10A和圍繞所述顯示區10A的非顯示區10B。所述薄膜電晶體基板100包括位於所述非顯示區10B的靜電防護結構200和印刷電路板300。所述靜電防護結構200延伸環繞所述顯示區10A一圈並與所述印刷電路板300電性連接。所述印刷電路板300爲所述薄膜電晶體基板100提供信號。在本實施例中，所述印刷電路板300可爲所述靜電防護結構200提供靜電放電過程中所需的接地信號，以便靜電能有效地藉由所述靜電防護結構200釋放。在本實施例中，所述印刷電路板300可以爲柔性電路板（FPC）。
參照圖1和圖2，所述靜電防護結構200包括放電金屬層201與透明導電層202，所述放電金屬層201與所述透明導電層202部分重疊接觸且電性連接。所述透明導電層202與所述放電金屬層201分別從二者重疊的部分反向延伸，所述透明導電層202延伸的寬度大於所述放電金屬層201延伸的寬度。所述放電金屬層201與所述透明導電層202均延伸環繞所述顯示區一圈。
參照圖2，所述薄膜電晶體基板100包括基板101、位於所述基板101上的第一金屬層102、位於所述基板101上且覆蓋所述第一金屬層102的第一絕緣層103、位於所述第一絕緣層103上的第二金屬層104，以及位於所述第一絕緣層103上且覆蓋所述第二金屬層104的第二絕緣層105。由於圖2僅示出所述薄膜電晶體基板100的所述非顯示區10B的情況，實際的所述第一金屬層102、所述第二金屬層104、所述第一絕緣層103和所述第二絕緣層105還有延伸覆蓋到所述顯示區10A 。
在本實施例中，所述靜電防護結構200位於所述第一絕緣層103上，所述透明導電層202位於所述第一絕緣層103上，所述放電金屬層201和所述第二金屬層104爲由同一層金屬圖案化形成，且所述第二絕緣層105覆蓋所述第二金屬層104及所述靜電防護結構200的所述透明導電層202與所述放電金屬層201。所述靜電防護結構200用於靜電放電，例如，所述靜電防護結構200可與所述薄膜電晶體基板100的所述顯示區10A內像素單元電性連接用以釋放像素單元中的靜電，從而保證面板正常顯示。
進一步參照圖1，所述透明導電層202與所述放電金屬層201爲沿遠離二者重疊的部分以反向方式延伸。所述透明導電層202沿遠離二者重疊的部分延伸方向與所述放電金屬層201沿遠離二者重疊部分的延伸方向互爲圖1中所示的D1和D2，D1和D2爲反向的。在本實施例中，參照圖1中所述靜電防護結構200 的局部放大部分，所述透明導電層202沿遠離二者重疊部分的延伸方向爲D1，所述放電金屬層201沿遠離二者重疊部分的延伸方向爲D2。所述透明導電層202包括沿D1方向靠近所述顯示區10A的端部202a與遠離所述顯示區10A的端部202b，所述端部202a與所述端部202b之間的距離爲所述透明導電層202的寬度L2。所述放電金屬層201包括沿D2方向靠近所述非顯示區10B的端部201a與遠離所述非顯示區10B的端部201b，所述端部201a與所述端部201b之間的距離爲所述放電金屬層201的寬度L1。所述端部201a到所述端部202a之間的距離爲所述透明導電層202與所述放電金屬層201部分重疊後的總寬度L0，L0大於所述透明導電層202的寬度L2與所述放電金屬層201的寬度L1中的任意一個，所述透明導電層202的寬度L2大於所述放電金屬層201的寬度L1。在合理的面板設計情況下，L2比L1越大越好，有利於用透光性的所述透明導電層202來釋放靜電。在其他實施例中，所述透明導電層202沿遠離二者重疊部分的延伸方向可爲D2，所述放電金屬層201沿遠離二者重疊部分的延伸方向可爲D1。
習知靜電放電結構設計中採用加寬用於靜電放電的金屬線路來加大靜電放電的路徑，但由用於靜電放電的金屬線路的加寬，金屬的不透光性容易造成面板邊框處的框膠固化不足的問題。在本實施例中，所述靜電防護結構200用於靜電放電，即採用所述放電金屬層201及與所述放電金屬層201部分重疊接觸且電性連接的所述透明導電層202用於靜電放電，如此，利用透光性的透明導電層202加寬了所述靜電防護結構200的寬度，而不需要加寬不透光性的放電金屬層201，進而避免所述放電金屬層201加寬造成面板邊框處框膠固化不足的現象。
在本實施例中，所述透明導電層202的材料爲氧化銦錫、氧化鋅或鋁摻雜的氧化鋅，可以理解的，所述透明導電層202的材料不限於氧化銦錫、氧化鋅或鋁摻雜的氧化鋅。所述基板101可以爲透明玻璃基板。
在本實施例中，所述薄膜電晶體基板100還包括位於所述基板101上且位於所述顯示區10A的薄膜電晶體（圖未示），所述放電金屬層201與所述薄膜電晶體的功能電極爲由同一層金屬圖案化形成。圖2中僅示出所述第二金屬層104位於所述非顯示區10B的部分，實際其也部分覆蓋所述顯示區10A，從而所述第二金屬層104的部分構成所述薄膜電晶體的源極和汲極（圖未示）。在本實施例中，所述功能電極可爲所述薄膜電晶體的源極與汲極。
進一步參照圖2，所述薄膜電晶體基板100還包括導電連接層106。所述第一絕緣層103與所述第二絕緣層105中開設有暴露所述第一金屬層102的第一開口107，所述第二絕緣層105中開設有暴露所述第二金屬層104的第二開口108，所述導電連接層106形成於所述第二絕緣層105上並延伸至所述第一開口107與所述第二開口108內，從而實現所述第一金屬層102與所述第二金屬層104的電性連接。
在本實施例中，所述導電連接層106可以爲透明導電層，所述導電連接層106的材料爲氧化銦錫、氧化鋅或鋁摻雜的氧化鋅，但並不限於此。
實施例二
參照圖3，本發明實施例二的薄膜電晶體基板400，所述薄膜電晶體基板400與本發明實施例一的薄膜電晶體基板100的區別在於：所述第一金屬層102與所述第二金屬層104不是藉由導電連接層106、第一開口107及第二開口108電性連接。
在本實例中，所述薄膜電晶體基板400包括基板101、位於所述基板101上的第一金屬層102、位於所述基板101上且覆蓋所述第一金屬層102的第一絕緣層103、位於所述第一絕緣層103上第二金屬層104；以及位於所述第一絕緣層103上且覆蓋所述第二金屬層104的第二絕緣層105。所述第一絕緣層103開設有暴露所述第一金屬層102的第三開口109，所述第二金屬層104與所述第一金屬層102藉由第三開口109電性連接。
所述薄膜電晶體基板400與所述薄膜電晶體基板100爲制程不一樣的薄膜電晶體基板。所述靜電防護結構200皆適用於所述薄膜電晶體基板400 與所述薄膜電晶體基板100，但不限於這兩種薄膜電晶體基板。
實施例三
參照圖4，本發明實施例三的液晶顯示面板500。所述液晶顯示面板500包括所述薄膜電晶體基板100、對應所述薄膜電晶體基板100設置的彩色濾光基板600以及設置於所述薄膜電晶體基板100與所述彩色濾光基板600之間的液晶層700。
所述液晶顯示面板500應用於需要設置顯示屏的電子裝置，所述電子裝置例如(但不限於)：移動電話、移動電視、智能電話、藍牙裝置、無線電子郵件接收器、手持型或携帶型計算機、迷你筆記型計算機、筆記型計算機、智能本、平板計算機、打印機、複印機、掃描儀、傳真機、全球定位系統(GPS)接收器/導航儀、攝影機、數字媒體播放器、攝錄像機、游戲控制面板、腕表、鐘錶、計算器、電視監視器、平板顯示器、電子閱讀裝置(例如，電子閱讀器)、移動健康裝置、計算機監視器、汽車顯示器(包含里程計顯示器及速度計顯示器等)、駕駛艙控制件及/或顯示器、攝影機景觀顯示器(例如，車輛中的後視攝影機的顯示器)、電子照片、電子廣告牌或標識、投影儀、冰箱、洗滌器、乾燥器、洗滌器/乾燥器、美觀結構(例如，關於一件珠寶或衣服的影像顯示)，但並不以此爲限。
綜上所述，所述靜電防護結構200用於靜電放電，即採用所述放電金屬層201及與所述放電金屬層201部分重疊接觸且電性連接的所述透明導電層202用於靜電放電，如此，利用透光性的透明導電層202加寬了所述靜電防護結構200的寬度，而不需要加寬不透光性的放電金屬層201，進而避免所述放電金屬層201加寬造成面板邊框處框膠固化不足的現象。
對於所屬領域技術人員而言，顯然本發明不限於上述示範性實施例的細節，而且在不背離本發明的精神或基本特徵的情況下，能夠以其他的具體形式實現本發明。最後應說明的是，以上實施例僅用以說明本發明的技術方案而非限制，儘管參照較佳實施例對本發明進行了詳細說明，本領域的普通技術人員應當理解，可以對本發明的技術方案進行修改或等同替換，而不脫離本發明技術案的範圍。
100、400:薄膜電晶體基板 10A:顯示區 10B:非顯示區 200:靜電防護結構 201:放電金屬層 202:透明導電層 101:基板 102:第一金屬層 103:第一絕緣層 104:第二金屬層 105:第二絕緣層 106:導電連接層 107:第一開口 108:第二開口 109:第三開口 300:印刷電路板 500:液晶顯示面板 600:彩色濾光基板 700:液晶層 201a、201b、202a、202b:端部 L0、L1、L2:寬度
圖1爲本發明實施例的所述薄膜電晶體基板與靜電防護結構的俯視平面圖。
圖2爲本發明第一實施例的薄膜電晶體基板的非顯示區的剖面圖。
圖3爲本發明第二實施例的薄膜電晶體基板的非顯示區的剖面圖。
圖4爲本發明第三實施例的液晶顯示面板的剖面圖。
100:薄膜電晶體基板
10A:顯示區
10B:非顯示區
200:靜電防護結構
201:放電金屬層
202:透明導電層
300:印刷電路板
201a、201b、202a、202b:端部
L0、L1、L2:寬度

Claims (9)

  1. 一種薄膜電晶體基板，具有顯示區和圍繞所述顯示區的非顯示區，所述薄膜電晶體基板包括基板，以及位於所述基板上且位於所述非顯示區的靜電防護結構，其改良在於， 所述靜電防護結構包括放電金屬層及與所述放電金屬層部分重疊接觸且電性連接的透明導電層； 所述透明導電層與所述放電金屬層分別從二者重疊的部分反向延伸，且所述透明導電層延伸的寬度大於所述放電金屬層延伸的寬度。
  2. 如請求項1所述的薄膜電晶體基板，其中，所述放電金屬層與所述透明導電層均延伸環繞所述顯示區一圈。
  3. 如請求項2所述的薄膜電晶體基板，其中，所述薄膜電晶體基板還包括位於所述非顯示區的印刷電路板，所述靜電防護結構與所述印刷電路板電性連接。
  4. 如請求項1所述的薄膜電晶體基板，其中，所述薄膜電晶體基板還包括：位於所述基板上的第一金屬層、位於所述基板上且覆蓋所述第一金屬層的第一絕緣層，位於所述第一絕緣層上的第二金屬層；以及位於所述第一絕緣層上且覆蓋所述第二金屬層的第二絕緣層。
  5. 如請求項4所述的薄膜電晶體基板，其中，所述靜電防護結構位於所述第一絕緣層上，所述透明導電層位於所述第一絕緣層上，所述放電金屬層和所述第二金屬層爲由同一層金屬圖案化形成，且所述第二絕緣層覆蓋所述第二金屬、所述透明導電層與所述放電金屬層。
  6. 如請求項5所述的薄膜電晶體基板，其中，所述薄膜電晶體基板還包括位於所述基板上的且位於所述顯示區的薄膜電晶體，所述放電金屬層與所述薄膜電晶體的功能電極爲由同一層金屬圖案化形成，且所述第二金屬層的部分構成所述薄膜電晶體的功能電極。
  7. 如請求項5所述的薄膜電晶體基板，其中，所述薄膜電晶體基板還包括導電連接層；所述第一絕緣層與所述第二絕緣層中開設有暴露所述第一金屬層的第一開口，所述第二絕緣層中開設有暴露所述第二金屬層的第二開口，所述導電連接層形成於所述第二絕緣層上並延伸至所述第一開口與所述第二開口內從而實現所述第一金屬層與所述第二金屬層的電性連接。
  8. 如請求項5所述的薄膜電晶體基板，其中，所述第一絕緣層開設有暴露所述第一金屬層的第三開口，所述第二金屬層與所述第一金屬層藉由所述第三開口電性連接。
  9. 一種液晶顯示面板，包括如請求項1至8任意一項所述薄膜電晶體基板； 與所述薄膜電晶體基板相對設置的彩色濾光基板；以及 設置於所述薄膜電晶體基板與所述彩色濾光基板之間的液晶層。
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