TW200828450A - Method for manufacturing liquid crystal display panel and liquid crystal display panel - Google Patents

Method for manufacturing liquid crystal display panel and liquid crystal display panel Download PDF

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TW200828450A
TW200828450A TW096129398A TW96129398A TW200828450A TW 200828450 A TW200828450 A TW 200828450A TW 096129398 A TW096129398 A TW 096129398A TW 96129398 A TW96129398 A TW 96129398A TW 200828450 A TW200828450 A TW 200828450A
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liquid crystal
crystal display
layer
display panel
electrode
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TW096129398A
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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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
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    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/124Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1259Multistep manufacturing methods
    • H01L27/1288Multistep manufacturing methods employing particular masking sequences or specially adapted masks, e.g. half-tone mask
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
    • H01L27/1214Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
    • H01L27/1259Multistep manufacturing methods
    • H01L27/1292Multistep manufacturing methods using liquid deposition, e.g. printing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/40Electrodes ; Multistep manufacturing processes therefor
    • H01L29/43Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/45Ohmic electrodes
    • H01L29/456Ohmic electrodes on silicon
    • H01L29/458Ohmic electrodes on silicon for thin film silicon, e.g. source or drain electrode
    • 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
    • G02F1/136231Active matrix addressed cells for reducing the number of lithographic steps
    • 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
    • G02F1/13629Multilayer wirings
    • 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

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  • Microelectronics & Electronic Packaging (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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  • Thin Film Transistor (AREA)
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Description

200828450 九、發明說明: 【發明所屬之技術領域】 本發明係關於一種液晶顯示裝置,尤其係關於一種主動 矩陣型之液晶顯示面板之製造方法及藉由該製造方法所製 造之液晶顯示面板。 【先前技術】 液晶顯示裝置係組合液晶顯示面板PNL、驅動電路及背 光源等周邊裝置而構成。圖16係說明典型之縱電場型(所 謂TN型)之液晶顯示裝置之概略構成例之剖面模式圖。通 常,構成主動矩陣型之液晶顯示裝置之液晶顯示面板,係 在第1面板PNL1與第2面板PNL2之間封入液晶LC而形成, 該第1面板PNL1係藉由第1基板(主動矩陣基板或者薄膜電 晶體基板)所構成,該第2面板PNL2係藉由第2基板(對向基 板或者彩色濾光片基板)所構成。 在構成第1面板PNL1之第1基板SUB1之内面具有薄膜電 晶體TFT、及藉由該薄膜電晶體TFT所驅動之像素電極 PX,在最上層成膜第1配向膜ORI1,賦予液晶配向控制 能。又,在外面(背面)貼附有第1偏光板POL1。另一方 面,在構成第2面板PNL2之第2基板SUB2之内面具有彩色 濾光片CF、劃分與鄰接像素之彩色濾光片之間之遮光層 (黑色矩陣)BM、及對向電極CT,在最上層成膜第2配向膜 ORI2,賦予液晶配向控制能。又,在外面(表面)貼附有第 2偏光板POL2,其係偏光轴與第1偏光板p〇Ll之偏光軸正 交偏光配置者。並且,省略詳細之構成圖示。 123475.doc 200828450 在第1基板SUB1製造薄膜電晶體TFT之製造步驟中,在 該基板上首先形成藉由鉻等金屬膜所形成且平行配置之複 數閘極佈線,及從該各閘極佈線向每一像素延伸之閘極電 極。然後,形成絕緣層、主動層(矽半導體層)、資料佈 線、汲極電極及源極電極、像素電極、保護膜、配向膜 等,對配向膜賦予液晶配向控制能而形成第1基板。在第i 基板SUB1之背面設置有背光源BLK。此外,用於驅動該 液晶顯示面板之電路則未圖示。 圖17係說明圖16所說明之液晶顯示面板之1像素之構成 例及構成该像素之薄膜電晶體之構成例圖。亦即,圖17(a) 係像素之平面圖,圖17(b)係沿圖i6(a)之G-G,線之剖面 圖。如圖17(a)所示,1像素係形成於藉由相鄰接之閘極佈 線與資料佈線所包圍之區域。在該像素區域内,薄膜電晶 體TFT配置於閘極佈線GL與資料佈線DL之交叉部。又, 構成像素之像素電極PX經由接觸孔TH連接於薄膜電晶體 TFT之源極電極SD1,且與辅助容量佈線CL之間形成辅助 電容。並且,源極電極與汲極電極在動作中切換,但此處 係將源極電極固定為SD1,將汲極固定電極為SD2來進行 說明。 在圖17(b)中,薄膜電晶體TFT係形成於第1基板suBl之 表面所形成之底層膜UW上。且覆蓋從閘極佈線GL延伸之 閘極電極GT地形成有閘極絕緣膜GI。在該閘極絕緣膜GI 上依次積層:作為主動層之矽(Si)半導體層SI及歐姆接觸 層(n+ Si)NS(亦簡稱為接觸層)、源極電極SD1&汲極電極 123475.doc 200828450 SD2。底層膜UW係藉由氮化矽與氧化矽之積層膜所形 成。 覆蓋該閘極佈線GL及閘極電極GT地成膜宜為矽氮化物 (SiNx)之閘極絕緣膜GI,在其上形成與閘極佈線GL交叉之 複數之資料佈線DL。並且,在同層與該資料佈線〇乙同時 形成源極電極SD1與汲極電極SD2。 雖然該像素在全彩顯示時成為各單色(紅、綠、藍)之副 像素,但此處簡稱為像素。構成像素之薄膜電晶體如 前所述地,以閘極電極GT、在該閘極電極上圖案化之矽 半導體膜SI、在矽半導體膜之上層分離形成之歐姆接觸層 (η矽)NS、及連接於各分離之歐姆接觸層之源極電極與汲 極電極而構成。 在該薄膜電晶體之上層成膜保護膜PAS,在其上圖案化 宜為ITO之像素電極PX,藉由開設於保護膜pAS之接觸孔 TH連接於源極電極SD1。並且,覆蓋像素電極ρχ&保護膜 PAS地成膜第1配向膜(參照圖16),但並未圖示。 另一方面,在未圖示之另一基板形成全彩時經由3色之 彩色滤光片及平滑層(overeoat保護膜,圖16中未圖示)之 對向電極(參照圖16)。接著,覆蓋對向電極地成膜第2配向 膜(參照圖16),並與前述之一基板之主動矩陣基板相疊 合’在其間隙封入液晶。 在專利文獻1中揭示有藉由喷墨法形成前述之薄膜電晶 體基板之佈線等。在專利文獻1中記載有以下内容,即: 使用含有導電材料之液體材料藉由喷墨法形成薄膜電晶體 123475.doc 200828450 TFT之閘極電極,又使用含有半導體材料之液體材料藉由 喷墨法形成薄膜電晶體TFT之源極電極及汲極電極。 〔專利文獻1〕日本特開2003-3 18193號公報 【發明内容】 〔發明所欲解決之問題〕 向薄膜電晶體基板製作薄膜電晶體時,在以下各步驟中 使用光微影製程,即:(1)閘極電極形成、(2)主動層島結 構形成、(3)源·汲極電極形成、(4)接觸孔形成、(5)像素電 極形成光微影。此等之光微影製程係金屬等濺鍍步驟、光 阻劑塗佈及遮罩曝光、顯影步驟、蝕刻步驟、光阻劑剝 離、洗淨步驟之反覆進行。但是,在反覆如此步驟之光微 影製程中’需要使用曝光遮罩之大規模之製造設備,成為 妨礙製品成本降低之要因。 近年來,替代如前所述之步驟而提議使用喷墨之直描。 藉由採用喷墨直描,可謀求薄膜電晶體形成之簡化,實現 削減製造設備及生產效率之大幅度提高,期待液晶顯示裝 置之成本降低。 具體而言,藉由喷墨直描形成薄膜電晶體之閘極佈線及 閘極電極、包含資料佈線之源極電極與汲極電極,藉此可 削減光微影製程數目。但是依然還需要3次光微影製程。 本發明之目的在於提供一種液晶顯示面板之製造方法及 液晶顯示面才反,該⑧晶顯示面才反之製造方法係纟薄膜電晶 體之製造製程中,藉由進-步適用噴墨直描步驟來盡可能 削減光微影製程數,以簡化製造㈣,實㈣晶顯示裝置 123475.doc 200828450 之進一步之成本降低。 〔解決問題之技術手段〕 為了達成前述目的,本發明之特徵在於其係藉由以下方 法製造液晶顯示面板,即:在液晶.顯示面板之閘極佈線及 閘極電極,及包含資料佈線之源極電極與汲極電極中之任 一步驟,或者此等之若干個步驟中導入噴墨直描製程,並 且在主動層島結構之形成上使用喷墨直描製程。
C υ 〔發明之效果〕 依照本發明,可以以低成本得到液晶顯示面板。 【實施方式】 以下,參照實施例之圖面詳細地說明本發明之最佳實施 形態。 圖1係說明構成本發明之液晶顯示面板之第〖基板(薄膜 電曰Β體基板)之製造製程之實施例丨之要部之步驟圖,係顯 示從閘極形成直至主動層島結構之形成為止之步驟圖。並 且’開極形成係包含閘極佈線及閘極電極之形成。在實施 例1中,#由光微影製程進行閘極電極之形成,主動層島 結構係將藉由第!導電性墨水之直描所形成之源極電極虚 沒極電極用仙刻遮罩,使之圖案化而形成。 ’、 圖2〜圖6係圖1之製程中之要部構造之說明圖。並且, 圖4係沿圖3之Α·Α’線之剖面圖,圖6係沿圖5之Β.Β,線之剖 成參照圖2至圖6說明圖1之步驟。圖1(a)之閘極 屬薄膜叫在該金屬薄膜:Λ 膜金 、上塗佈感光性光阻劑,藉由使 123475.doc 200828450 用曝光遮罩之曝光、顯影之光微影製程步驟形成光阻劑之 閘極圖案(P-2)。餘刻從光阻劑所露出之金屬,僅殘留藉由 感光性光阻劑所覆蓋之部分(P-3)。剝離、洗淨感光性光阻 劑而形成閘極(閘極佈線及閘極電極)(p_4)。
接著’在圖1 (b)之主動層島結構及源極電極及沒極電極 形成步驟中,如圖2平面地所示,在閘極佈線GL及閘極電 極GT之上層形成閘極後,藉由cvD法依次成膜閘極絕緣 膜GI、矽半導體層SI、成為接觸層之〆矽層則(3層 CVD)(P-5)。在其上層如圖3(a)所示,喷墨直描源極電極材 料(源極電極與汲極電極及資料佈線材料)墨水(第丨導電性 墨水)而形成源極直描圖案DLA、SD1A、SD2A(p-6)。圖 Ub)係顯示源極直描製程。 再者,該源極直描圖案成為包含薄膜電晶體之通道部之 連續之導電媒。在其上喷墨直描宜為加之透明導電膜而 形成覆蓋層CAP(參照W3⑻及圖4)β此時,㈣道部分之 ㈣層NS上亦塗佈覆蓋層以卜以藉由噴墨直描形成有覆 盍層CAP之源極.汲極電極及通道部分作為遮罩,首先蝕 刻接觸層(n+W)NS,接絲”半導體層咖形成主動 層島結構(P-7)(參照圖5、圖6)。 在前述第!導電性墨水中,在溶媒中分散含有銀粒子或 鋼粒子等之低電阻金屬粒子,作為第2導電性墨水,可以 使用在溶媒中分散含有透明導電性粒子或金屬粒 又,包含於第!導電性墨水中之低電阻金 子或銅粒子中之杯土 ^ 驾了丁且马銀粒 子中之任一者、或者此等之混合粒子,包含於第 123475.doc 200828450 2導電性墨水中之透明導電性粒子係使用IT〇4IZ〇、或者 ΙΖΤΟ等之金屬氧化物粒子,可以使用鎳粒子作為金屬粒 子。 圖7係延續圖1,說明構成本發明之液晶顯示面板之第J 基板(薄膜電晶體基板)之製造製程之實施例丨之要部之步驟 圖,係顯示從形成層間絕緣膜及接觸孔直至形成像素電極 及通道之間隙為止之步驟圖。又,圖8〜圖12係圖7之步驟 之要部構造之說明圖。以下,參照圖8至圖12說明圖7之步 驟。 在圖7(a)中,以形成有覆蓋層cap之源極電極與汲極電 極及通道部分作為遮罩,進而蝕刻加工而形成主動層島結 構,覆蓋該主動層島結構地形成層間絕緣膜(p_8)。在該層 間絕緣膜塗佈感光性光阻劑,使用曝光遮罩曝光,使主動 層島結構之源極電極與汲極電極部分之覆蓋層部分之層間 絕緣膜可溶化(P-9),顯影後進行該部分之蝕刻(p-1〇),使 源極電極與沒極電極部分之覆蓋層部分露出(參照圖8)。 圖8(a)係藉由圖7之製程(p_丨〇)所形成之包含源極電極與 汲極電極部分之像素部分之要部平面圖,圖8(b)係沿圖 8(a)之資料配線DL部分之c_c,線之剖面圖,圖8(c)係沿圖 8(a)之薄膜電晶體部分之D-D,線之剖面圖。藉由圖7之製程 (p-io),源極電極與汲極電極部分之覆蓋層CAp露出,其 他部分藉由層間絕緣膜INS所覆蓋。但是,此時如圖9、圖 10所不,資料佈線DL之端子部分(圖9)、及閘極佈線gl之 端子部分(圖10)亦同時進行光微影處理及蝕刻處理,以露 123475.doc -11· 200828450 出覆蓋層CAP。
接著,圖7(b)之像素及間隙形成步驟係像素電極之形成 及源極電極與汲極電極之分離加工步驟。首先,在圖7之 製程(P-10)後,於前面濺鍍ΙΤΟ(Ρ-ΐι)。並且,可以使用 IZO、IZTO等代替ITO。在其上,如圖11(a)所示塗佈感光 性光阻劑RG ’實施光微影製程(pq2),光微影使資料佈 線、閘極佈線、通道部分之ITO露出。圖11(b)係顯示沿圖 11(a)之E-E’線之剖面’圖u(c)係顯示沿圖u(a)之F-F,線之 剖面。 蝕刻露出部分之ITO(P-13),除去通道部分之覆蓋層 CAP。在覆蓋層或資料佈線端子及閘極佈線端子部分使用 鎳膜作為覆蓋層時,進行該部分之蝕刻(p_14)。藉此,將 通道部分之ιτο分離為源極電極SD1之部分與汲極電極sd2 之P刀此時,在像素區域分離出作為像素電極之ITO。 該像素電極係與源極電極SD1成為_體。然後,㈣接觸 層NS形成㈣(P_15)’剝離不需要之感光性光阻劑完成薄 膜電阳體圖12顯不该狀態》此時,間隙之間隔d成為覆 蓋層CAP之間隔,㈣4所示之藉由喷墨直描之源極電極 sd1A與沒極電極SD2A之墨水膜之間^窄很多。例如, 對向於間隔D係10 μΓη以上,間隔d可以為4㈣以下,可以 實現高速之薄膜電晶體’可進行高精細顯示。 圖13係用於說明本發明效果之步驟比較圖。扣之先前 ::之步驟A與本發明之步驟B’其閑極形成步驟及層間 緣媒-孔形成步驟相同,而主動層島結構、源極.沒極(S- 123475.doc -12- 200828450 )電極形成步驟及像素形成步驟不同。在步驟Α與步驟Β 之閘極形成步驟中,藉由閘極金屬濺鍍—光微影製程—金 屬蝕刻〜光阻劑之剝離、洗淨來形成閘極佈線及閘極電 才虽° Ο
乂驟A中,上述主動層島結構及源極.沒極(s_D)電極 形成步驟,係經過3層CVD—光微影製程—接觸層蝕刻一 光阻Μ之剝離、洗淨—源極金屬濺鍍—光微影製程—金屬 蝕刻〜間隙蝕刻—《阻劑之剝冑及洗淨之各步驟。又,同 樣,層間 '絕緣膜·孔形成步驟中’藉由成膜層間絕緣膜— 光微影製程—㈣來形成需要之接觸孔。接著,在像素形 成步驟中,實施ΙΤ⑽鍍光微影製程一蝕刻—光阻劑剝 離、洗淨。 另方®,本發明之步驟3,在接續與前述同樣之開極 形成步驟之島結構及S_D形成步驟中,實施3層_〜源極 電極之噴墨直描—接觸層_。接著’在層間絕緣膜及孔 形成步驟之後之像素形成步驟中,實施IT⑽錄—光微影 製程—蝕刻—間隙蝕刻—光阻劑剝離、洗淨。 ’ 比較圖U所示之前述先前技術之步驟錢本發明之步驟 Β’由於在島結構及S_D形成步驟中不使用光微影製程+ 驟,故可以削減曝光遮罩之數量,可以以低成本製造液:
顯示裝置。 M 圖14係用於說明本發明效果之其他步驟比較圖。圖 先前技術之步驟C與本發明之步,亦係閉極形 及層間絕緣膜·孔形成步驟相m動層島結構、源極. 123475.doc -13. 200828450 汲極(S-D)電極形成步驟及像素形成步驟不同。在步驟c與 步驟B之閘極形成步驟中,與圖13同樣係藉由閘極金屬濺 鍍—光微影製程—金屬蝕刻—光阻劑之剝離、洗淨來形成 閘極佈線及閘極電極。 在步驟c中,該主動層島結構及源極·汲極(S-D)電極形 成步驟,係經過3層CVD->源極金屬濺鍍—光微影製程— 金屬蝕刻—接觸層餘刻—灰化—金屬蝕刻—間隙蝕刻—光 阻劑之剝離、洗淨之各步驟。又,同樣在層間絕緣膜及孔 形成步驟中,藉由成膜層間絕緣膜—光微影製程—蝕刻形 成需要之接觸孔。接著,在像素形成步驟中,實施ITO濺 鍍—光微影製程-> 钕刻—光阻劑剝離、洗淨。 另一方面,本發明之步驟B係與圖13同樣,在接續閘極 形成步驟之島結構及S-D形成步驟中,實施3層cVD->源極 之噴墨直描—接觸層蝕刻。並且,在層間絕緣膜及孔形成 步驟後之像素形成步驟中,實施IT〇濺鍍—光微影製程— 蝕刻—間隙蝕刻—光阻劑剝離、洗淨。 比較圖14所示之前述先前技術之步驟c與本發明之步驟 Β,由於在島結構及S-D形成步驟中不使用光微影製程,故 可以削減曝光遮罩之數量,可以以低成本製造液晶顯示裝 置。 圖15係說明主動矩陣型液晶顯示裝置之等價電路圖。圖 15(a)係液晶顯示面板整體之電路圖,圖15(b)係圖15(幻之 像素部PXL之放大圖。圖15(&)中,在顯示面板pNL矩陣狀 排列有多數之像素部PXL,各像素部PXL係藉由閘極佈線 123475.doc -14- 200828450 驅動電路GDR所選擇,根據來自資料佈線驅動電路ddr之 顯示資料信號點亮。 亦即,對應於藉由閘極佈線驅動電路GDR所選擇之閘極 佈線GL,從資料佈線驅動電路DDR經由資料佈線DL向液 晶顯示面板PNL之像素部PXL中之薄膜電晶體TFT供給顯 示資料(電壓)。 如圖15(b)所示,構成像素部pxl之薄膜電晶體TFT係設 置於閘極佈線GL與資料佈線DL之交叉部。薄膜電晶體 TFT之閘極電極GT係連接於閘極佈線GL,在薄膜電晶體 TFT之汲極電極SD2連接有資料佈線DL。 薄膜電晶體TFT之源極電極SD1係連接於液晶(元件)LC 之像素電極PX。液晶LC位於像素電極PX與共通電極CT之 間,藉由供給像素電極PX之資料(電壓)所驅動。並且,用 於暫時保持資料之辅助電容Ca係連接於汲極電極SD2與辅 助電容佈線CL之間。 以上之說明中,藉由喷墨直描所形成之佈線或電極、或 島結構形成層等,係藉由喷墨塗佈墨水後,乾燥,實施焙 燒而成為薄膜。 【圖式簡單說明】 圖1(a)、(b)係說明構成本發明之液晶顯示面板之第1基 板之製造製程之實施例1之要部之步驟圖。 圖2係圖1之製程中之要部構造之說明圖。 圖3(a)、(b)係圖1之製程中之要部構造之說明圖。 圖4係圖1之製程中之要部構造之說明圖。 123475.doc -15 - 200828450 圖5係圖1之製程中之要部構造之說明圖。 圖6係圖1之製程中之要部構造之說明圖。 圖7(a)、(b)係接續圖1,說明構成本發明之液晶顯示面 板之苐1基板(薄膜電晶體基板)之製造製程之實施例1之要 部之步驟圖。 圖8(a)、(b)、(c)係圖7之製程中之要部構造之說明圖。 圖9係圖7之製程中之要部構造之說明圖。 圖10係圖7之製程中之要部構造之說明圖。 圖11(a)、(b)、(c)係圖7之製程中之要部構造之說明圖。 圖12係圖7之製程中之要部構造之說明圖。 圖13係用於說明本發明之效果之步驟比較圖。 圖14係用於說明本發明之效果之其他步驟比較圖。 圖15(a)、(b)係說明主動矩陣型液晶顯示裝置之等價電 路圖。 圖16係說明典型之縱電場型(所謂tn型)之液晶顯示裝置 之概略構成例之剖面模式圖。 圖17(a)、(b)係說明圖16所說明之液晶顯示面板之1像素 之構成例及構成該像素之薄膜電晶體之構成例圖。 【主要元件符號說明】 覆蓋層 閘極佈線 閘極絕緣膜 閑極電極 接觸層
CAP GL GI GT NS 123475.doc -16· 200828450 RG 光阻劑 SI 矽半導體層 SUB 1 第1基板(薄膜電晶體基板) SUB2 第2基板(彩色濾光器基板) TCF 透明導電膜 123475.doc -17-

Claims (1)

  1. 200828450 十、申請專利範圍: 1. -種液晶顯示面板之製造方法,其特徵在於其係製造如 下之液晶顯示面板者;該液晶顯示面板包含··第i基 板,其係在矩陣狀排列之複數像素之每—像素形成薄二 y曰體者;及第2基板,其係形成彩色濾光片者;並在 則述第1基板與前述第2基板之貼合間隙封入液晶;且前 述液晶顯示面板之製造方法包含以下步驟: 、,將半導體層成膜於前述基板,將接㈣成膜於該 半導體層之上層而形成主動層; 在前述主動層上藉由噴墨直描塗佈成為前述薄膜電晶 體之源極電極與㈣電極之^導電性墨水,形成包含 該薄膜電sg體之通道部之連續的第1導電膜; 在刖述第1導電膜上藉由噴墨直描塗佈第2導電性墨水 作為覆蓋層’連同該第1導電膜形成積層膜; 圖案化前述積層膜而形成源極電極.汲極電極部,其 中成^述源極電極與前述沒極電極之部分為連續者; 此乂則述源極電極·没極電極部作為餘刻遮罩,圖案化 前述主動層,形成主動層島結構。 2.如請求項1之液晶顯示面板之製造方法,其中前述第蹲 電^墨水係在溶媒中分散包含有低電阻金屬粒子; 月_J述第2導電性墨水係在溶媒中分散包含有透明導電 性粒子或金屬粒子。 月求項2之液曰曰顯不面板之製造方法’其中前述第丄導 電性墨水所含之低電阻金屬粒子係銀粒子或銅粒子中之 123475.doc 200828450 任一者、或者其專之混合粒子; 前述第2導電性墨水所含之透明導電性粒子係金屬氧 化物粒子,金屬粒子係鎳粒子。 4 · 一種液晶顯示面板之拌士 1 ^ ^ 氣w方法,其特徵在於其係製造如 下之液晶顯示面板者;該液晶顯示面板包含1 1基 板’其係在矩陣狀排列之複數像素之每—像素形成薄膜 電晶體者;及第2基板,其係形絲色it光片者;並在 前述第1基板與前述第2基板之貼合間隙封入液晶;且前 述液晶顯示面板之製造方法包含以下步驟·· ,將半導體層成膜於前述第i基板,將接觸層成膜於該 半導體層之上層而形成主動層; 在則述主動層上藉由喷墨直描塗佈成為前述薄膜電晶 體之源極電極與汲極電極之第1導電性墨水,形成包含 該薄膜電晶體之通道部之連續的第i導電膜; 在前述第1導電膜上藉由喷墨直描塗佈第2導電性墨水 作為覆蓋層,連同該第丨導電膜形成積層膜; 圖案化前述積層膜而形成源極電極·汲極電極部,其 中成為前述源極電極與前述汲極電極之部分為連續者; 以前述源極電極·汲極電極部作為蝕刻遮罩,圖案化 前述主動層,形成主動層島結構; 覆蓋包含前述主動層島結構上之前述源極電極.汲極 電極部之基板表面地將透明導電膜成膜; 塗佈光阻劑並藉由光微影技法使前述通道部之前述透 明導電臈露出,蝕刻除去該露出部分之前述透明導電 123475.doc 200828450 膜’使上層之前述接觸層露出; 將路出之刚述接觸層蝕刻,在下層之半導體層形成前 述通道部。 5·如明求項4之液晶顯示面板之製造方法,其中前述第1導 電性墨水係在溶媒中分散包含有低電阻金屬粒子; 别述第2導電性墨水係在溶媒中分散包含有透明導電 性粒子或金屬粒子。 6.如請求項4之液晶顯示面板之製造方法,#中前述第蹲 電性墨水所含之低電阻金屬粒子係銀粒子或銅粒子中之 任一者、或其等之混合粒子; 月述第2導電性墨水所含之透明導電性粒子係金屬氧 化物粒子,金屬粒子係鎳粒子。 7·如請求項4之液晶顯示面板之製造方法,其中前述透明 導電膜係ITO或IZO、或者IZT〇中之任一者。 8. -種液晶顯示面其特徵在於包含:第!基板,其係 在矩陣狀排列之複數像素之每一像素形成薄膜電晶體 者;及第2基板,其係形成彩色滤光片者;並在前述第ι 基板與前述第2基板之貼合間隙封入液晶,·且 前述薄膜電晶體包含:閘極佈線與從該間極佈線延伸 之間極電極、資料佈線、從該資料佈線延伸之沒極電 極、像素電極、與前述沒極電極為同層且連接於前述像 素電極之源極電極、及包含半導體層與形成於該半導體 層之上層之接觸層的主動層; 前述第1基板所具有之薄膜電晶體之前述沒極電極及 123475.doc 200828450 前述源極電極包含積層膜及透明導電膜;該積層膜係在 藉由噴墨直描之塗佈所形成之第1導電膜上,積層同樣 藉由噴墨直描之塗佈所形成並成為覆蓋層之第2導電膜 者;前述透明導電膜係成膜於該積層膜之上層。 9 ·如明求項8之液晶顯示面板,其中前述透明導電膜,係 在前述像素之區域構成與前述汲極電極或前述源極電極 中之一者成一體之像素電極。 10·如請求項8之液晶顯示面板,其中前述透明導電膜,在 前述資料佈線之區域中,與前述汲極電極或前述源極電 極中之另一者在該資料佈線成為一體。 11·如請求項8之液晶顯示面板,其中前述第丨導電膜係低電 阻金屬溥膜,刚述第2導電膜係透明導電薄膜或金屬薄 膜。 12·如請求項丨丨之液晶顯示面板,其中前述低電阻金屬薄膜 係銀粒子之焙燒膜或銅粒子之焙燒膜中之任一者、或其 專之混合粒子之培燒膜; 前述透明導電薄膜係金屬氧化物粒子之培燒膜或金屬 粒子之焙燒膜。 13. 如請求項12之液晶顯示面板,其中前述金屬氧化物粒子 係加或㈣、或者IZT0之粒子,前述金屬粒子係錄粒 〇 14. 如請求項8之液晶顯示面板,丨中構成前較極電極與 前述源極電極之前述積層膜之前述覆蓋層的對向間隔, 較該積層膜之前述第丨導電膜之對向間隔窄。 123475.doc 200828450 15·如請求項8之液晶顯示面板,其中構成前述源極電極與 前述;及極電極之前述透明導電膜的對向間隔,較前述積 層膜之前述第1導電膜之對向間隔窄。 16. 如請求項8之液晶顯示面板,其中構成前述薄膜電晶體 之間極佈線及閘極電極,係藉由導電性墨水之喷墨塗佈 及培燒所形成。 17. 如明求項8之液晶顯示面板,其中構成前述薄膜電晶體 之^料佈線,係藉由導電性墨水之噴墨塗佈及焙燒所形 成。 123475.doc
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