TWI289361B - Liquid crystal display device using thin film transistor and method for manufacturing the same - Google Patents

Liquid crystal display device using thin film transistor and method for manufacturing the same Download PDF

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Publication number
TWI289361B
TWI289361B TW094140878A TW94140878A TWI289361B TW I289361 B TWI289361 B TW I289361B TW 094140878 A TW094140878 A TW 094140878A TW 94140878 A TW94140878 A TW 94140878A TW I289361 B TWI289361 B TW I289361B
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source
photoresist pattern
gate
thin film
liquid crystal
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TW094140878A
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TW200635046A (en
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Yoshikazu Yoshimoto
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Future Vision Inc
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/1368Active matrix addressed cells in which the switching element is a three-electrode device
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362Active matrix addressed cells
    • G02F1/136286Wiring, e.g. gate line, drain line
    • G02F1/136295Materials; Compositions; Manufacture processes
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/42Arrangements for providing conduction through an insulating substrate

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Thin Film Transistor (AREA)
  • Electrodes Of Semiconductors (AREA)

Description

1289361 九、發明說明: 【發明所屬之技術領域】 本發明關於使用藉喷墨塗佈之薄膜電晶體(以下稱為 「TFT」)的液晶顯示裝置及其製造方法。 【先前技術】 在液晶顯示裝置之TFT製造步驟中,為了縮短曝光步 驟,所實施的為利用半色調曝光之TFT製造方法。此外, 藉由喷墨塗佈之TFT則揭示於如下專利文獻!。 下述專利文獻1中記載TFT之閘極膜乃利用含導電材料 之液體材料,藉喷墨法所形成,此外,TFT之源極區域及 汲極區域乃使用含半導體材料之液體材料,藉噴墨法所形 成。 [專利文獻1]特開2003-3 18 193號公報 【發明内容】 液晶顯示裝置之TFT製造步驟之半色調曝光中,有如下 课題(1)酼著液晶顯示基板尺寸之大型化,半色調光罩之 製作困難’(2)對應於TFT微細化之半色調光罩之製作困 難’(3)半色調曝光部之光阻不均勻,使得底膜構造受限, 而僅能縮短曝光步驟一次。 為此,本發明中,液晶顯示裝置之tft製造步驟中之所 謂孤島形成時’作為半色調曝光,將併用藉由曝光之光阻 圖案形成及藉由噴墨塗佈之光阻圖案形成。 * I以往用於小型基板之藉由半色調曝光法之曝 光步驟縮短’在使用超大型基板的情況中亦為可能,且不 1060Il.doc 1289361 再有在底層對象材料上之限制,因此,曝光以外之步驟縮 短亦成可能。 、 亦即,可得到(1)半色調曝光可藉由喷墨塗佈來進行, (2)不需要高水平之噴墨塗佈技術,(3)沒有基板尺寸限制 (超大型基板亦可),(4)半色調曝光部之尺寸沒有限制(亦 對應於微細TFT),(5)曝光步驟之縮短等之成效。 【實施方式】 以下’利用圖式來說明本發明之實施例。 [第一實施例] 圖1(a)係本發明之利用TFiri0之主動矩陣型液晶顯示裝 置之概略圖’圖1(b)係圖i(a)所示之像素部3〇〇之放大圖。 在圖1(a)中,對應於藉掃描配線驅動電路1〇〇所選擇之閘 極配線101,由資料配線驅動電路2〇〇介以源極配線2(H, 而對顯示面板400之像素部300中之TFT10供應資料(電 壓)。 圖1(b)中,TFT10設置於閘極配線101及源極配線201之 交又部,TFT 10之閘極11上連接有閘極配線ιοί,TFT10之 源極(或汲極)12上連接有源極配線201。 TFT10之汲極(或源極)13則連接於液晶元件2〇之像素電 極21,液晶元件2〇位於像素電極21與共通電極22之間,並 藉由像素電極21供應之資料(電壓)所驅動。此外,有為了 暫時保持資料之輔助電容30連接於汲極13與辅助電容配線 3 0 1之間。 圖2係圖1所示之顯示面板400中之像素部300及TFT10之 106011.doc 1289361 平面圖及剖面圖,同圖(a)係圖1所示之配置成矩陣狀之像 素部300之平面圖,同圖(b)係同圖(a)所示之像素部3〇〇中 之TFT100之虛線A-A,部之剖面圖。 圖2(a)中,配置成矩陣狀之像素部3〇〇中,tftio配置於 閘極配線101與源極配線2〇1之交叉部。此外,像素電極2ι 連接於TFT10,在輔助電容配線3〇1之間形成輔助電容。 在圖2(b)中,ITT10中,在絕緣基板上,形成有閘極u 及被覆該電極之閘極絕緣膜52,該絕緣膜上依序積層有半 導體層(a-Si)53、歐姆接觸層(n+Si)54、源極12及汲極13, 在源極12及歐姆接觸層54與汲極13及歐姆接觸層M之間, 形成有用來保護半導體層53之保護膜55。 圖3係圖2(b)所示之TFT1〇之部分剖面圖,省略了圖2(b) 中之保濩膜5 5、源極12、及汲極13。 [苐-—貫施例] 圖4係圖3所示之丁FT1〇之製造步驟圖,在同圖⑷至⑷ 中左側所示的為平面圖,右側所示的為剖面圖。 首先如圖4(a)所示,在省略圖示之絕緣基板上形成閘 和1並為了被覆該電極而形成閘極絕緣膜52。此外,在 省絕緣膜上依序積層半導體層53及歐姆接觸層Μ。接著, 用半曝光光阻圖案光罩,形成具有半曝光部61之光阻 62 ° 著在圖4(b)中,為了形成孤島,而蝕刻歐姆接觸層 54及半導體層53。 ^ 在Θ 4(c)中’ |虫刻半曝光部61之光阻,進一步 106011.doc 1289361 地,如同圖(d)所示, 最後,如圖4(e)所示 [第三實施例] 餘刻歐姆接觸層54, 剝離光阻62。 形成間隙部63。 圖5係在圖4所示之劁 <I造步驟中將相當於半曝光之光阻以 喷墨塗佈來形成者,太门m 在同圖(a)至(e)中,左側所示的為平 面圖,右側所示的為剖面圖。 首先,如圖5(a)戶,, 、、 在省略圖示之絕緣基板上形成閘 ° 並為了被覆该電極而形成閘極絕緣膜52。進一步 地在此、、、邑緣臈上依序積層半導體層53及歐姆接觸層W。 光阻@案光罩來形成光阻… 在圖(b)中,藉餘刻歐姆接觸層54,形成以間隙 部63所分離之源極12及汲極13。 接著在圖5(c)中,在間隙部63内,藉喷墨塗佈而形成 含有金屬微粒之顏料71。 接著’在圖5(d)中,蝕刻半導體層53,而形成孤島。 最後’如圖5(e)所示,剝離光阻62及顏料71。 以上’在圖5中與圖4不同之處在於半導體53之蝕刻介以 顏料71來進行,因此,在滴下顏料71之間隙部63附近受到 餘刻之半導體層53上會形成滴下顏料71之痕跡部72。該痕 跡部72向間隙部63内側形成凹部。 圖6係為了掌握痕跡部72之形狀之放大圖,同圖對 應於圖5(c),同圖(c)對應於圖5(e)。 圖6(a)中,在間隙部63上滴下顏料71,顏料71如同圖(b) 所示般地/σ者間隙部暈開。結果’如同圖(c)所示,在剝離 106011.doc 1289361 光阻及顏料後,會形成半導體層53之痕跡部72。在此,滴 下之顏料71之直徑為20 μιη,間隙部63之長度為4 μπι,寬 度為3 0至4 0 μηι。 【圖式簡單說明】 圖1(a)及(b)係本發明之液晶顯示裝置之概略圖。 圖2(a)及(b)係圖1所示之像素部3〇〇及TFT 10之放大圖。 圖3係圖2所示之TFT10之部分剖面圖。 φ 圖4(a)至(e)係TFT10之製造步驟圖。 圖5(a)至(e)係圖3所示之TFT10之其他製造步驟圖。 圖6(a)至(c)係圖5所示之製造步驟之部分放大圖。 【主要元件符號說明】 10 薄膜電晶體(TFT) 11 閘極 12 源極(或汲極) 13 汲極(或源極) 20 液晶元件 21 像素電極 22 共通電極 30 輔助電容 51 絕緣基板 52 閘極絕緣膜 53 半導體層(a-Si) 54 歐姆接觸層 55 保護臈 106011.doc 1289361 61 半曝光部 62 光阻 63 間隙部 71 顏料 72 痕跡部 100 掃描配線驅動電路 101 閘極配線 200 資料配線驅動電路 201 源極配線 300 像素部 301 輔助電容配線 400 顯示面板
106011.doc -10-

Claims (1)

1289361 十、申請專利範圍: 1 · 一種液晶顯示裝置,其係包含.$ # $ 形成於絕緣基板上之閘極::覆;=晶體,其係包括 依序形成於上述__上:=:極絕緣膜、 =及11:成於上述分離之歐姆接觸層上之源極及 膜.像辛以及汲極之間保護半導體層之保護 極’其係將上述薄膜電晶體配置成矩陣狀, 対1相膜電晶體线極(或源極)連接;閘極配線, 極)連接於閉極;及源極配線,其係連接於源極(或汲 該裝置之特徵為上述薄膜雷S 2. 2液晶顯示裝置之製造方法’其係在絕緣基板上形成 閉極及被覆該電極之閉極絕緣膜,在上述閉極絕緣膜上 依㈣成半導體層及歐姆接觸層,在上述歐姆接觸層上 形成藉曝光之光阻圖案’使用上述藉曝光之光阻圖案來 姓刻歐姆接觸層而形成具有間隙部之歐姆接觸層,在上 述間隙部上形成藉由喷墨塗佈之光阻圖案,使用上述兩 個光阻圖案來钱刻半導體層而形成孤島,並在剝離上述 兩個光阻圖案後’形成以保護膜填平上述間隙部之薄膜 電曰曰體’將上述薄膜電晶體配置成矩陣狀,將像素電極 連接於上述薄膜電晶體之沒極(或源極),將閉極配線連 接於閘極,將源極配線連接於源極(或汲極); 該方法之特徵為··在蝕刻上述半導體層而形成孤島時 106011.doc 1289361 之光阻圖案,係併用了藉曝光所形成光阻圖案及藉喷墨 塗佈所形成之光阻圖案。
106011.doc
TW094140878A 2005-03-18 2005-11-21 Liquid crystal display device using thin film transistor and method for manufacturing the same TWI289361B (en)

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JP2005079455A JP4542452B2 (ja) 2005-03-18 2005-03-18 薄膜トランジスタの製造方法

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JP2007299779A (ja) * 2006-04-27 2007-11-15 Tokyo Electron Ltd マスクパターンの形成方法およびtftの製造方法
KR101348025B1 (ko) 2007-04-04 2014-01-06 삼성전자주식회사 박막 트랜지스터의 제조방법
JP5331321B2 (ja) * 2007-08-31 2013-10-30 ゴールドチャームリミテッド 表示装置の製造方法
KR101501699B1 (ko) 2007-09-19 2015-03-16 삼성디스플레이 주식회사 유기 박막 트랜지스터 기판 및 이의 제조 방법
JP2021027199A (ja) * 2019-08-06 2021-02-22 株式会社ジャパンディスプレイ 表示装置及びその製造方法

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KR100532085B1 (ko) * 2002-05-23 2005-11-30 엘지.필립스 엘시디 주식회사 감광막 인쇄장치 및 이를 이용한 액정표시소자의 제조방법
JP4615197B2 (ja) * 2002-08-30 2011-01-19 シャープ株式会社 Tftアレイ基板の製造方法および液晶表示装置の製造方法
JP4423864B2 (ja) * 2003-02-21 2010-03-03 コニカミノルタホールディングス株式会社 薄膜トランジスタ素子及びその製造方法
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