TWI566388B - 顯示面板 - Google Patents
顯示面板 Download PDFInfo
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- TWI566388B TWI566388B TW103127623A TW103127623A TWI566388B TW I566388 B TWI566388 B TW I566388B TW 103127623 A TW103127623 A TW 103127623A TW 103127623 A TW103127623 A TW 103127623A TW I566388 B TWI566388 B TW I566388B
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- Prior art keywords
- layer
- metal oxide
- display panel
- thin film
- film transistor
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- 229910044991 metal oxide Inorganic materials 0.000 claims description 59
- 150000004706 metal oxides Chemical class 0.000 claims description 59
- 239000004065 semiconductor Substances 0.000 claims description 52
- 239000010409 thin film Substances 0.000 claims description 36
- 238000002955 isolation Methods 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 12
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 6
- 238000002834 transmittance Methods 0.000 claims description 6
- 239000011787 zinc oxide Substances 0.000 claims description 6
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims description 5
- 229910001195 gallium oxide Inorganic materials 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 229910003437 indium oxide Inorganic materials 0.000 claims description 4
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 4
- 229910000476 molybdenum oxide Inorganic materials 0.000 claims description 4
- OFIYHXOOOISSDN-UHFFFAOYSA-N tellanylidenegallium Chemical compound [Te]=[Ga] OFIYHXOOOISSDN-UHFFFAOYSA-N 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910006854 SnOx Inorganic materials 0.000 claims description 2
- 229910052733 gallium Inorganic materials 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 claims description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001887 tin oxide Inorganic materials 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010937 tungsten Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910004205 SiNX Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 210000002858 crystal cell Anatomy 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- TYHJXGDMRRJCRY-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) tin(4+) Chemical compound [O-2].[Zn+2].[Sn+4].[In+3] TYHJXGDMRRJCRY-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices 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
- H01L27/12—Devices 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
- H01L27/1214—Devices 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
- H01L27/1222—Devices 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 crystalline structure of the active layer
- H01L27/1225—Devices 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 crystalline structure of the active layer with semiconductor materials not belonging to the group IV of the periodic table, e.g. InGaZnO
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices 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
- H01L27/12—Devices 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
- H01L27/1214—Devices 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
- H01L27/1248—Devices 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 or shape of the interlayer dielectric specially adapted to the circuit arrangement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0603—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78633—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device with a light shield
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thin Film Transistor (AREA)
- Liquid Crystal (AREA)
Description
本發明係關於一種顯示面板，尤指一種改善薄膜電晶體單元作動穩定性之顯示面板。
隨著顯示器技術不斷進步，使用者對於電子產品之要求越來越高，所有的裝置均朝體積小、厚度薄、重量輕等趨勢發展，故目前市面上主流之顯示器裝置已由以往之陰極射線管發展成液晶顯示裝置(LCD)或有機發光二極體裝置(OLED)。
在LCD或OLED中，由於薄膜電晶體單元(TFT)之主動層材料之能隙一般與紫外光(UV)、藍光相近，因此，TFT對於紫外光及藍光十分敏感，在紫外光或藍光照射下(例如在製程中照射紫外光或藍光、或來自外在環境的紫外光或藍光)，TFT中會產生額外的電子電洞對(electron hole pair)，造成TFT中的載子通道(channel)上包含額外的載子(carrier)，進而造成TFT電性偏移，例如閘極電壓(Vth)負偏、漏電流上升等；更使OLED在暗態操作時會有漏光現象、或移位暫存器(Shift Register,S/R)、資料多工器(Data Mux)及其他驅動電路無法正常運作等問題。
有鑑於此，目前亟需發展一種改善上述問題之
顯示面板，提升顯示裝置的顯示品質並延長其使用壽命，期盼帶給消費者更穩定、更高品質的顯示效果。
本發明之主要目的係在提供一種顯示面板，俾能減少顯示裝置中的薄膜電晶體單元受到紫外光或藍光影響，進而有效提升顯示裝置的穩定性及顯示品質。
為達成上述目的，本發明提供一種顯示面板，包括：一基板；一薄膜電晶體單元，係設置於該基板上，且該薄膜電晶體單元包括：一閘極電極及一半導體層，其中該半導體層包含一載子通道區，且該閘極電極係對應該載子通道區設置；一第一金屬氧化層，設置於該半導體層上且覆蓋該載子通道區；以及一包含氧化矽(SiOx)或三氧化二鋁(Al2O3)的隔離層，該隔離層係設置於該半導體層與該第一金屬氧化層之間；其中，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層的穿透率為50%以下。
據此，本發明利用該第一金屬氧化層吸收短波長光線(例如在製程中照射紫外光或藍光、或來自外在環境的紫外光或藍光)，有效減少短波長光線接觸到薄膜電晶體單元的半導體層，進而減少薄膜電晶體單元之電性偏移，並改善顯示裝置在暗態操作時的漏光現象、或移位暫存器、資料多工器及其他驅動電路無法正常運作等問題，因此，本發明之顯示面板可提供更穩定、更高品質的顯示效果。
1‧‧‧基板
21‧‧‧閘極電極
22‧‧‧半導體層
221‧‧‧載子通道區
222‧‧‧側壁
23‧‧‧源極電極
24‧‧‧汲極電極
33‧‧‧第二金屬氧化層
26‧‧‧絕緣層
27‧‧‧緩衝層
31‧‧‧隔離層
311‧‧‧第一接觸孔
32‧‧‧第一金屬氧化層
321‧‧‧第二接觸孔
圖1係本發明一較佳實施例之薄膜電晶體單元示意圖。
圖2係本發明另一較佳實施例之薄膜電晶體單元示意圖。
圖3係本發明再一較佳實施例之薄膜電晶體單元示意圖。
圖4A係本發明一較佳實施例之薄膜電晶體單元之分解圖。
圖4B係本發明一較佳實施例之薄膜電晶體單元之俯視圖。
以下係藉由特定的具體實施例說明本發明之實施方式，熟習此技藝之人士可由本說明書所揭示之內容輕易地了解本發明之其他優點與功效。本發明亦可藉由其他不同的具體實施例加以施行或應用，本說明書中的各項細節亦可針對不同觀點與應用，在不悖離本創作之精神下進行各種修飾與變更。
請參照圖1，本發明之顯示面板包括：一基板1；一薄膜電晶體單元，係設置於該基板1上，且該薄膜電晶體單元包括：一閘極電極21、一半導體層22及一絕緣層26，其中該半導體層22包含一載子通道區221，且該閘極電極21係對應該載子通道區221設置；一第一金屬氧化層
32，設置於該半導體層22上且覆蓋該載子通道區221；以及一包含氧化矽(SiOx)或三氧化二鋁(Al2O3)的隔離層31，該隔離層31係設置於該半導體層22與該第一金屬氧化層32之間，其中，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層32的穿透率為50%以下。
於本實施例中，該薄膜電晶體單元更可包含一源極電極23及一汲極電極24，該源極電極23與該汲極電極24係設置於該半導體層22上方，且該源極電極23與該汲極電極24與該半導體層22連接，該第一金屬氧化層32係設置於該半導體層22以及該源極電極23與該汲極電極24之間；然而，該第一金屬氧化層32亦可設置於該源極電極23與該汲極電極24上方並覆蓋該源極電極23與該汲極電極24。此外，於本實施例中，該第一金屬氧化層32設置於該半導體層22上且包覆該半導體層22的一側壁222；然而，該第一金屬氧化層32僅需至少覆蓋該載子通道區221，可視需求選擇性地包覆該半導體層22的一側壁222，若第一金屬氧化層32包覆該半導體層22的該側壁222，則更有助於減少薄膜電晶體單元之電性偏移及改善顯示裝置在暗態操作時的漏光現象。
於本實施例中，圖1所示之薄膜電晶體單元為一下閘極式(bottom gate)薄膜電晶體單元，該源極電極23與該汲極電極24係設置於該半導體層22上方，該半導體層22係設置於該閘極電極21上方，並且為蝕刻阻障層結構(etching stop layer structure,ESL)。薄膜電晶體單元可採用
習知之薄膜電晶體製程製作，故在此不再贅述。薄膜電晶體單元的結構可由本技術領域之人簡單調整，亦可為如圖2所示之一背通道蝕刻結構(back channel etching structure,BCE)，或為如圖3所示之一上閘極式(top gate)薄膜電晶體單元。值得一提的是，載子通道區主要是位於半導體層中較為靠近閘極電極的位置，因此在圖1及圖2中的該載子通道區221位置不同於圖3中的該載子通道區221位置。
於本實施例中，該第一金屬氧化層32的成份不受限，可為氧化鈦(TiOx)、氧化鉬(MoOx)、氧化鋅(ZnOx)、氧化銦(InOx)、氧化鎢(WOx)、氧化鎂(MgOx)、氧化鈣(CaOx)、氧化錫(SnOx)、氧化鎵(GaOx)、氧化銦鎵鋅(IGZO)或氧化鋁(AlOx)。該第一金屬氧化層之厚度不受限，可由本技術領域之人依實際需求調整；當第一金屬氧化層之厚度為10nm至100nm時，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層的穿透率約為50%以下，當第一金屬氧化層之厚度為30nm至100nm時，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層的穿透率約為30%以下，如此已可有效地阻擋大部份的紫外線，維持薄膜電晶體單元驅動電壓的穩定度。
此外，若該隔離層31包含氧化矽(SiOx)或三氧化二鋁(Al2O3)，該隔離層31之厚度、面積不受限，隔離層31之厚度較佳為5nm至20nm，隔離層31之面積較佳係大於或等於該第一金屬氧化層32之面積，如此可有效避免該半導體層22產生氧缺陷進而影響薄膜電晶體單元驅動電壓
的穩定度(當第一氧化層32氧化不完全時，與該半導體層22直接接觸之第一氧化層32會抓取半導體層22內部的氧，使半導體層22產生氧缺陷)，但本發明並未受限於此。請參見圖4A、4B，其為圖1之薄膜電晶體單元之分解圖及俯視圖，為了清楚比較隔離層31和第一金屬氧化層32之面積，圖4A、4B省略繪示閘極電極21、源極電極23、汲極電極24、第二金屬氧化層33、及絕緣層26。如圖4A所示，隔離層31設有第一接觸孔311，第一金屬氧化層32設有第二接觸孔321，該第一接觸孔311及該第二接觸孔321即是設置源極電極23與汲極電極24的位置，如圖4B所示，較佳地，隔離層31之面積係大於第一金屬氧化層32之面積。
再者，第二金屬氧化層33可更設置於該源極電極23與該汲極電極24上方並覆蓋該源極電極23與該汲極電極24，更加防止薄膜電晶體單元受到紫外光或藍光影響，進而提升顯示面板之作動穩定性。第二金屬氧化層33的成份不受限，可與第一金屬氧化層32相同或相異，本技術領域中具有通常知識者可視實際需求而選用適當材料。
此外，基板1可使用本技術領域常用之基板，如玻璃基板、塑膠基板、矽基板及陶瓷基板等。再者，閘極電極21、源極電極23及汲極電極24之材料可分別使用本技術領域常用之導電材料，如金屬、合金、金屬氧化物、金屬氮氧化物、或其他本技術領域常用之電極材料；且較佳為金屬材料，但本發明不僅限於此。至於半導體層22，亦可採用本技術領域常用之半導體層材料，例如氧化銦鎵
鋅(IGZO)、氧化銦錫鋅ITZO、其他金屬氧化物半導體、非晶矽、多晶矽、結晶矽等；另外，絕緣層26之材料可為本技術領域常用之如氮化矽(SiNx)、氧化矽(SiOx)或其組合之鈍化層材料。然而，本發明並不僅限於此。
因此，來自外在環境的入射光線中(如箭頭所示)，波長範圍於220nm至350nm的光線(例如在製程中照射紫外光或藍光、或來自外在環境的紫外光或藍光)會被第一金屬氧化層32和第二金屬氧化層33吸收，減少該些光線對半導體層22的影響。
圖1之圖式省略了顯示面板中的其他元件，可舉例如一液晶顯示面板(LCD)或一有機發光二極體顯示面板(OLED)。例如，作為液晶顯示面板時，除了上述之基板1、有機薄膜電晶體單元2、第一金屬氧化層32及隔離層31以外，更包含液晶單元、彩色濾光片單元、及背光模組等；或者，作為有機發光二極體顯示面板時，除了上述之基板1、有機薄膜電晶體單元2、第一金屬氧化層32及隔離層31以外，更包含有機發光二極體和封裝單元等。此外，本技術領域中具有通常知識者可輕易了解其他省略的元件，習知常用的元件皆可應用於本發明。
請參照圖2，本發明另一較佳實施例之顯示面板包括：一基板1；一薄膜電晶體單元，係設置於該基板1上，且該薄膜電晶體單元包括：一閘極電極21、一半導體
層22、一源極電極23、一汲極電極24及一絕緣層26，其中該半導體層22包含一載子通道區221，該載子通道區221係介於該源極電極23與該汲極電極24之間，且該閘極電極21係對應該載子通道區221設置；一第一金屬氧化層32，設置於該半導體層22上並包覆該半導體層22的一側壁222，且覆蓋該源極電極23與該汲極電極24；以及一包含氧化矽(SiOx)或三氧化二鋁(Al2O3)的隔離層31，該隔離層31係設置於該半導體層22與該第一金屬氧化層32之間，其中，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層32的穿透率為50%以下。
此外，該第一金屬氧化層32亦可設置於該半導體層22以及該源極電極23與該汲極電極24之間，且僅需至少覆蓋該載子通道區221，可視需求選擇性地包覆該半導體層22的一側壁222。
在本實施例中，除了上述結構之外，其餘皆與實施例1相同，於實施例1中所述之各層成分、厚度、面積、特性等皆可應用於此。
因此，來自外在環境的入射光線中(如箭頭所示)，波長範圍於220nm至350nm的光線(例如在製程中照射紫外光或藍光、或來自外在環境的紫外光或藍光)會被第一金屬氧化層32吸收，減少該些光線對半導體層22的影響。
請參照圖3，本發明再一較佳實施例之顯示面
板包括：一基板1；一薄膜電晶體單元，係設置於該基板1上，且該薄膜電晶體單元包括：一閘極電極21、一半導體層22、一絕緣層26及一緩衝層27，其中該半導體層22包含一載子通道區221，且該閘極電極21係設置於該半導體層22上方且對應該載子通道區221設置；一第一金屬氧化層32，設置於該半導體層22上且至少覆蓋該載子通道區221；以及一包含氧化矽(SiOx)或三氧化二鋁(Al2O3)的隔離層31，該隔離層31係設置於該半導體層22與該第一金屬氧化層32之間，其中，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層32的穿透率為50%以下。
此外，該薄膜電晶體單元更包含一源極電極23及一汲極電極24，且該源極電極23及該汲極電極24設置於該半導體層22的上方，該第一金屬氧化層32位於該源極電極23及該汲極電極24之間，並且可於該第一金屬氧化層32及該源極電極23與該汲極電極24的上方設置一第二金屬氧化層33，該第二金屬氧化層33覆蓋該源極電極23與該汲極電極24，且可視需求選擇性地包覆該半導體層22的一側壁，如此可具有較佳的遮蔽紫外光效果。
在本實施例中，除了上述結構之外，其餘皆與實施例1相同，於實施例1中所述之各層成分、厚度、面積、特性等皆可應用於此。
因此，來自外在環境的入射光線中(如箭頭所示)，波長範圍於220nm至350nm的光線(例如在製程中照射紫外光或藍光、或來自外在環境的紫外光或藍光)會被第
一金屬氧化層32及第二金屬氧化層33吸收，減少該些光線對半導體層22的影響。
上述實施例僅係為了方便說明而舉例而已，本發明所主張之權利範圍自應以申請專利範圍所述為準，而非僅限於上述實施例。
1‧‧‧基板
21‧‧‧閘極電極
22‧‧‧半導體層
221‧‧‧載子通道區
222‧‧‧側壁
23‧‧‧源極電極
24‧‧‧汲極電極
33‧‧‧第二金屬氧化層
26‧‧‧絕緣層
31‧‧‧隔離層
32‧‧‧第一金屬氧化層
Claims (9)
- 一種顯示面板，包括：一基板；一薄膜電晶體單元，係設置於該基板上，且該薄膜電晶體單元包括一閘極電極及一半導體層，其中該半導體層包含一載子通道區，且該閘極電極係對應該載子通道區設置；一第一金屬氧化層，設置於該半導體層上且覆蓋該載子通道區；以及一包含氧化矽(SiOx)或三氧化二鋁(Al2O3)的隔離層，該隔離層係設置於該半導體層與該第一金屬氧化層之間；其中，波長範圍介於210nm至350nm間的光線通過該第一金屬氧化層的穿透率為50%以下；且該隔離層之面積係大於或等於該第一金屬氧化層之面積。
- 如申請專利範圍第1項所述之顯示面板，其中，該第一金屬氧化層的成份係為氧化鈦(TiOx)、氧化鉬(MoOx)、氧化鋅(ZnOx)、氧化銦(InOx)、氧化鎢(WOx)、氧化鎂(MgOx)、氧化鈣(CaOx)、氧化錫(SnOx)、氧化鎵(GaOx)、氧化銦鎵鋅(IGZO)或氧化鋁(AlOx)。
- 如申請專利範圍第1項所述之顯示面板，其中，該第一金屬氧化層之厚度為30nm至100nm。
- 如申請專利範圍第1項所述之顯示面板，其中，該隔離層之厚度為5nm至20nm。
- 如申請專利範圍第1項所述之顯示面板，其中，該薄膜電晶體單元係一上閘極式(top gate)薄膜電晶體單元或一下閘極式(bottom gate)薄膜電晶體單元。
- 如申請專利範圍第1項所述之顯示面板，其中，該薄膜電晶體單元更包括一源極電極與一汲極電極，該源極電極與該汲極電極係設置於該半導體層上方，該第一金屬氧化層係設置於該半導體層以及該源極電極與該汲極電極之間。
- 如申請專利範圍第6項所述之顯示面板，其中更包含一第二金屬氧化層，該第二金屬氧化層係設置於該源極電極與該汲極電極上方並覆蓋該源極電極與該汲極電極。
- 如申請專利範圍第1項所述之顯示面板，其中，該薄膜電晶體單元更包括一源極電極與一汲極電極，該第一金屬氧化層係設置於該源極電極與該汲極電極上方並覆蓋該源極電極與該汲極電極。
- 如申請專利範圍第1項所述之顯示面板，其中，該第一金屬氧化層包覆該半導體層的一側壁。
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| CN106898624B (zh) * | 2017-04-28 | 2019-08-02 | 深圳市华星光电技术有限公司 | 一种阵列基板及制备方法、显示装置 |
| US10411047B2 (en) | 2017-04-28 | 2019-09-10 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Array substrate, manufacturing method thereof and display device |
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| TW201246389A (en) * | 2009-12-04 | 2012-11-16 | Semiconductor Energy Lab | Semiconductor device and manufacturing method thereof |
| TW201246398A (en) * | 2011-03-21 | 2012-11-16 | Qualcomm Mems Technologies Inc | Amorphous oxide semiconductor thin film transistor fabrication method |
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| TW201607001A (zh) | 2016-02-16 |
| US20160049524A1 (en) | 2016-02-18 |
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