CN105097827A - Ltps阵列基板及其制造方法 - Google Patents

Ltps阵列基板及其制造方法 Download PDF

Info

Publication number
CN105097827A
CN105097827A CN201510310280.0A CN201510310280A CN105097827A CN 105097827 A CN105097827 A CN 105097827A CN 201510310280 A CN201510310280 A CN 201510310280A CN 105097827 A CN105097827 A CN 105097827A
Authority
CN
China
Prior art keywords
grid
layer
matrix
insulating barrier
contact hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510310280.0A
Other languages
English (en)
Inventor
王聪
杜鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Technology Co Ltd
TCL China Star Optoelectronics Technology Co Ltd
Original Assignee
Shenzhen China Star Optoelectronics Technology Co Ltd
Wuhan China Star Optoelectronics Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen China Star Optoelectronics Technology Co Ltd, Wuhan China Star Optoelectronics Technology Co Ltd filed Critical Shenzhen China Star Optoelectronics Technology Co Ltd
Priority to CN201510310280.0A priority Critical patent/CN105097827A/zh
Priority to US14/762,458 priority patent/US9893097B2/en
Priority to PCT/CN2015/081635 priority patent/WO2016197400A1/zh
Publication of CN105097827A publication Critical patent/CN105097827A/zh
Priority to US15/863,988 priority patent/US20180130830A1/en
Priority to US15/863,989 priority patent/US20180122840A1/en
Pending legal-status Critical Current

Links

Classifications

    • 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
    • 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
    • H01L27/1248Devices 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier 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
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/66007Multistep manufacturing processes
    • H01L29/66075Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
    • H01L29/66227Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
    • H01L29/66409Unipolar field-effect transistors
    • H01L29/66477Unipolar field-effect transistors with an insulated gate, i.e. MISFET
    • H01L29/66742Thin film unipolar transistors
    • H01L29/6675Amorphous silicon or polysilicon transistors
    • H01L29/66765Lateral single gate single channel transistors with inverted structure, i.e. the channel layer is formed after the gate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types 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
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/786Thin film transistors, i.e. transistors with a channel being at least partly a thin film
    • H01L29/78606Thin 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
    • H01L29/78618Thin 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 characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof  ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types 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
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/786Thin film transistors, i.e. transistors with a channel being at least partly a thin film
    • H01L29/78651Silicon transistors
    • H01L29/7866Non-monocrystalline silicon transistors
    • H01L29/78672Polycrystalline or microcrystalline silicon transistor
    • H01L29/78678Polycrystalline or microcrystalline silicon transistor with inverted-type structure, e.g. with bottom gate

Abstract

本发明提供一种LTPS阵列基板及其制造方法。该方法包括:在基体上形成薄膜晶体管的栅极;在包括栅极的基体上依次形成第一绝缘层、半导体层和正性光阻层;自基体背向栅极的一侧进行曝光以形成多晶硅层;在包括多晶硅层的基板上形成具有接触孔的第二绝缘层;在第二绝缘层上形成薄膜晶体管的源极和漏极,使得源极和漏极可通过接触孔与多晶硅层电连接。本发明能够减少LTPS工艺所使用的光罩的类型及数量,简化制程并降低生产成本。

Description

LTPS阵列基板及其制造方法
技术领域
本发明涉及显示技术领域,具体涉及一种LTPS(LowTemperaturePoly-silicon,低温多晶硅)阵列基板及其制造方法。
背景技术
采用LTPS工艺的液晶显示装置由于具有较高的电子迁移率,能够有效减小TFT(ThinFilmTransistor,薄膜晶体管)的面积以提升像素的开口率,并且在增强显示亮度的同时能够降低功耗及生产成本,目前已成为液晶显示领域的研究热点。但是LTPS工艺复杂,制备阵列基板(Array基板)所需的光罩(Mask)的类型及数量较多,导致制造流程繁多,无法降低生产成本。因此如何减少LTPS工艺所使用的光罩的类型及数量,实为目前企业需要努力的目标。
发明内容
鉴于此,本发明实施例提供一种LTPS阵列基板及其制造方法,能够减少LTPS工艺所使用的光罩的类型及数量。
本发明一实施例提供一种LTPS阵列基板的制造方法,包括:在基体上形成LTPS阵列基板的薄膜晶体管的栅极;在包括栅极的基体上依次形成第一绝缘层、半导体层和正性光阻层,其中第一绝缘层的上表面为一平面;自基体背向栅极的一侧进行曝光以形成多晶硅层;在包括多晶硅层的基板上形成第二绝缘层,并在第二绝缘层内形成暴露多晶硅层的两端的第一接触孔;在第二绝缘层上形成薄膜晶体管的源极和漏极,使得源极和漏极可通过第一接触孔与多晶硅层电连接。
其中,在包括栅极的基体上形成第一绝缘层之前,还在未被栅极覆盖的基体上形成缓冲层,且其上表面和栅极的上表面构成一平面。
其中,在未被栅极覆盖的基体上形成缓冲层的步骤包括:在包括栅极的基体上依次形成缓冲层、负性光阻层;自基体背向栅极的一侧进行曝光,以除去位于栅极正上方的负性光阻层;除去位于栅极正上方的缓冲层,且保留未被栅极覆盖的基体上的缓冲层。
其中,自基体背向栅极的一侧进行曝光以形成多晶硅层的步骤包括:自基体背向栅极的一侧进行曝光,以仅在对应于栅极的正上方的第一区域保留正性光阻层;向除第一区域之外的半导体层注入第一杂质离子;自基体背向栅极的一侧进行曝光,以在栅极的正上方形成第二区域的正性光阻层,第二区域小于第一区域;向除第二区域之外的半导体层注入第二杂质离子;除去第二区域的正性光阻层。
其中,第一杂质离子和第二杂质离子分别为N+、N-型杂质离子。
其中,自基体背向栅极的一侧进行曝光以形成多晶硅层的步骤包括:自基体背向栅极的一侧进行曝光,以仅在对应于栅极的正上方的第一区域保留正性光阻层;向除第一区域之外的半导体层注入P型杂质离子;自基体背向栅极的一侧进行曝光,以在栅极的正上方形成第二区域的正性光阻层,第二区域小于第一区域;
除去所述第二区域的所述正性光阻层。
其中,在第二绝缘层上形成源极和漏极之后,在由源极和漏极组成的源漏电极层上形成平坦钝化层,并在平坦钝化层内形成第二接触孔以暴露漏极的表面;在平坦钝化层上且第二接触孔远离薄膜晶体管的一侧形成LTPS阵列基板的公共电极层;在平坦钝化层和公共电极层上形成第三绝缘层,第三绝缘层未覆盖第二接触孔;在平坦钝化层上形成像素电极,并且像素电极可通过第二接触孔与漏极电连接。
本发明另一实施例提供一种LTPS阵列基板,包括:基体;栅极,位于基体上;依次形成于包括栅极的基体上的第一绝缘层、多晶硅层、第二绝缘层,第二绝缘层内形成有第一接触孔;源极和漏极,位于第二绝缘层上,且源极和漏极可通过第一接触孔与多晶硅层电连接;平坦钝化层,位于由源极和漏极组成的源漏电极层上,平坦钝化层内形成有暴露漏极的表面的第二接触孔;第三绝缘层,位于平坦钝化层上且未覆盖第二接触孔;像素电极,位于平坦钝化层上且像素电极可通过第二接触孔与漏极电连接。
其中,LTPS阵列基板还包括缓冲层,缓冲层位于未被栅极覆盖的基体上,且缓冲层的上表面和栅极的上表面构成一平面。
其中,LTPS阵列基板还包括公共电极层,公共电极层位于平坦钝化层上的第二接触孔远离薄膜晶体管的一侧。
本发明实施例的LTPS阵列基板及其制造方法,自基体背向栅极的一侧进行曝光,即利用不透光的栅极进行曝光以形成多晶硅层,在多晶硅层的制程中无需使用光罩,从而能够减少LTPS工艺所使用的光罩的类型及数量,简化制程并降低生产成本。
附图说明
图1是本发明的LTPS阵列基板一实施例的制造方法的流程图;
图2是本发明的制造方法中形成栅极的示意图;
图3是本发明的制造方法中形成第一绝缘层、半导体层和正性光阻层的示意图;
图4是本发明的制造方法中形成多晶硅层的示意图;
图5是本发明的制造方法中形成第二绝缘层的示意图;
图6是本发明的制造方法中形成源极和漏极的示意图;
图7是本发明的制造方法中形成像素电极的的示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明所提供的示例性的实施例的技术方案进行清楚、完整地描述。
图1是本发明的LTPS阵列基板一实施例的制造方法的流程图。如图1所示,本实施例的制造方法包括以下步骤:
步骤11:在基体上形成LTPS阵列基板的薄膜晶体管的栅极。
如图2所示,基体21用于形成液晶显示面板的LTPS阵列基板,所述基体21可为玻璃基体、塑料基体或可挠式基体。
本实施例可以利用第一光罩对形成于基体21上的第一金属层进行曝光,并在曝光后进行显影、刻蚀等图案化制程以得到形成栅极22,其中可利用包含有磷酸、硝酸、醋酸以及去离子水的蚀刻液对第一金属层12进行蚀刻,当然也可以采用干法蚀刻。
当然,本实施例还可以通过其他方式得到栅极22,例如采用化学气相沉积(Chemicalvapordeposition,CVD)、等离子化学气相沉积(PlasmaEnhancedChemicalvapordeposition,PECVD)、溅射、真空蒸镀或低压化学气相沉积等方法直接在基体21上形成具有预定图案的栅极22。其中,第一金属层可由金属,例如铝、钼、钛、铬、铜,或金属氧化物,例如氧化钛,或金属的合金或其它导电材料构成。
步骤12:在包括栅极的基体上依次形成第一绝缘层、半导体层和正性光阻层,其中第一绝缘层的上表面为一平面。
结合图3所示,在形成第一绝缘层25、半导体层26和正性光阻层27之前,本实施例需要在未被栅极22覆盖的基体21上形成缓冲层(Bufferlayer)23,具体过程包括但不限于:
首先,在包括栅极22的基体21上依次形成缓冲层23、负性光阻层24。缓冲层23可以为氮化硅(SiNx)层、氧化硅(SiOx)层或者其他非导电材料的组合,缓冲层23可用于防止基体21内的杂质在后续工艺中向上扩散而影响之后形成的低温多晶硅层的品质,氮化硅层和氧化硅层可以采用化学气相沉积、等离子化学气相沉积形成、溅射、真空蒸镀或低压化学气相沉积等方法形成,但不限于此。
然后,自基体21背向栅极22的一侧进行曝光,位于栅极22正上方的负性光阻层24由于受到栅极22的遮挡而未曝光,因此可在显影时被灰化去除。
最后,剥离除去剩余的负性光阻层24,再通过刻蚀除去位于栅极22正上方的缓冲层23,从而保留未覆盖栅极22的缓冲层23。
步骤13:自基体背向栅极的一侧进行曝光以形成多晶硅层。
结合图4所示,首先,自基体21背向栅极22的一侧进行曝光,位于栅极22上方的第一区域Q1的正性光阻层27由于受到栅极22的遮挡而未曝光,因此可在显影时被保留,且未被栅极22遮挡而被曝光的正性光阻层27在显影时可被灰化去除,从而仅仅在对应于栅极22的正上方的第一区域Q1中保留有正性光阻层27。
然后,向除第一区域Q1之外的半导体层26注入第一杂质离子,即对半导体层26进行传统意义上的重掺杂处理。
接着,自基体21背向栅极22的一侧进行曝光,本次曝光的强度大于形成第一区域Q1的正性光阻层27的曝光的强度,因此位于第一区域Q1的两端的正性光阻层27被除去,从而在栅极22的正上方形成第二区域Q2的正性光阻层27,其中第二区域Q2小于第一区域Q1
进一步,向除第二区域Q2之外的半导体层26注入第二杂质离子,即对半导体层26进行传统意义上的轻掺杂处理。本实施例的第一杂质离子可以为N+型杂质离子,对应地第二杂质离子为N-型杂质离子,但是当第一杂质离子为P+型杂质离子时无需掺杂第二杂质离子,即省略了轻掺杂处理的步骤。
最后,除去第二区域Q2的正性光阻层27,并利用第二光罩经过曝光、显影、刻蚀得到如图4所示具有预定图案的多晶硅层28。
步骤S14:在包括多晶硅层的基板上形成第二绝缘层,并在第二绝缘层内形成暴露多晶硅层的两端的第一接触孔。
第二绝缘层29覆盖于多晶硅层28和第一绝缘层25上。本实施例可以利用第三光罩经曝光、显影、刻蚀得到图5所示第一接触孔O1
步骤S15:在第二绝缘层上形成薄膜晶体管的源极和漏极,使得源极和漏极可通过第一接触孔与多晶硅层电连接。
本实施例可以利用第四光罩经过曝光、显影、刻蚀得到如图6所示的薄膜晶体管的源极S和漏极D。
承上所述,本实施例自基体21背向栅极22的一侧进行曝光,即利用不透光的栅极22进行曝光以形成多晶硅层28,在多晶硅层28的制程中无需使用光罩,从而能够减少整个LTPS阵列面板所使用的光罩的类型及数量,简化制程并降低生产成本。
如图7所示,本发明实施例的制造方法还包括以下步骤:
在由源极S和漏极D组成的源漏电极层上形成平坦钝化层30,并在平坦钝化层30内形成第二接触孔O2以暴露漏极D的表面。本实施例可以利用第五光罩经曝光、显影、刻蚀得到第二接触孔O2
在平坦钝化层30上且第二接触孔O2远离薄膜晶体管的一侧形成LTPS阵列基板的公共电极层31。本实施例可以利用第六光罩经曝光、显影、刻蚀得到具有预定图案的公共电极层31。
在平坦钝化层30和公共电极层31上形成第三绝缘层32,且第三绝缘层32未覆盖第二接触孔O2。本实施例可以利用第七光罩经曝光、显影、刻蚀得到具有预定图案的第三绝缘层32,还可以采用化学气相沉积、等离子化学气相沉积形成、溅射、真空蒸镀或低压化学气相沉积等方法直接形成具有预定图案的第三绝缘层32。
在平坦钝化层30上形成像素电极33,并且像素电极33可通过第二接触孔O2与漏极D电连接。本实施例可以利用第八光罩经曝光、显影、刻蚀得到具有预定图案的像素电极33。另外,薄膜晶体管的栅极22与形成于基体21(阵列基板)上的栅极线对应电连接,薄膜晶体管的源极S与形成于阵列基板上的数据线对应电连接,栅极线和数据线垂直交叉形成像素电极33所在的像素显示区域。
本发明实施例还提供一种具有图7所示LTPS阵列面板的液晶显示面板以及液晶显示器,与其具有相同的有益效果。
在此基础上,以上所述仅为本发明的实施例,并非因此限制本发明的专利范围,凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换,例如各实施例之间技术特征的相互结合,或直接或间接运用在其他相关的技术领域,均同理包括在本发明的专利保护范围内。

Claims (10)

1.一种LTPS阵列基板的制造方法,其特征在于,包括:
在基体上形成所述LTPS阵列基板的薄膜晶体管的栅极;
在包括所述栅极的所述基体上依次形成第一绝缘层、半导体层和正性光阻层,其中所述第一绝缘层的上表面为一平面;
自所述基体背向所述栅极的一侧进行曝光以形成多晶硅层;
在包括所述多晶硅层的所述基板上形成第二绝缘层,并在所述第二绝缘层内形成暴露所述多晶硅层的两端的第一接触孔;
在所述第二绝缘层上形成所述薄膜晶体管的源极和漏极,使得所述源极和所述漏极可通过所述第一接触孔与所述多晶硅层电连接。
2.根据权利要求1所述的方法,其特征在于,在包括所述栅极的所述基体上形成所述第一绝缘层之前,所述方法还包括:
在未被所述栅极覆盖的所述基体上形成缓冲层,且所述缓冲层的上表面和所述栅极的上表面构成一平面。
3.根据权利要求2所述的方法,其特征在于,在未被所述栅极覆盖的所述基体上形成所述缓冲层的步骤包括:
在包括所述栅极的所述基体上依次形成缓冲层、负性光阻层;
自所述基体背向所述栅极的一侧进行曝光,以除去位于所述栅极正上方的所述负性光阻层;
除去位于所述栅极正上方的所述缓冲层,且保留未被所述栅极覆盖的所述基体上的所述缓冲层。
4.根据权利要求1所述的方法,其特征在于,所述自所述基体背向所述栅极的一侧进行曝光以形成多晶硅层的步骤包括:
自所述基体背向所述栅极的一侧进行曝光,以仅在对应于所述栅极的正上方的第一区域保留所述正性光阻层;
向除所述第一区域之外的所述半导体层注入第一杂质离子;
自所述基体背向所述栅极的一侧进行曝光,以在所述栅极的正上方形成第二区域的所述正性光阻层,所述第二区域小于所述第一区域;
向除所述第二区域之外的所述半导体层注入第二杂质离子;
除去所述第二区域的所述正性光阻层。
5.根据权利要求4所述的方法,其特征在于,所述第一杂质离子为N+型杂质离子,且所述第二杂质离子为N-型杂质离子。
6.根据权利要求4所述的方法,其特征在于,所述自所述基体背向所述栅极的一侧进行曝光以形成多晶硅层的步骤包括:
自所述基体背向所述栅极的一侧进行曝光,以仅在对应于所述栅极的正上方的第一区域保留所述正性光阻层;
向除所述第一区域之外的所述半导体层注入P型杂质离子;
自所述基体背向所述栅极的一侧进行曝光,以在所述栅极的正上方形成第二区域的所述正性光阻层,所述第二区域小于所述第一区域;
除去所述第二区域的所述正性光阻层。
7.根据权利要求1所述的方法,其特征在于,所述在所述第二绝缘层上形成所述薄膜晶体管的源极和漏极的步骤之后包括:
在由所述源极和所述漏极组成的源漏电极层上形成平坦钝化层,并在所述平坦钝化层内形成第二接触孔以暴露所述漏极的表面;
在所述平坦钝化层上且所述第二接触孔远离所述薄膜晶体管的一侧形成所述LTPS阵列基板的公共电极层;
在所述平坦钝化层和所述公共电极层上形成第三绝缘层,所述第三绝缘层未覆盖所述第二接触孔;
在所述平坦钝化层上形成像素电极,并且所述像素电极可通过所述第二接触孔与所述漏极电连接。
8.一种LTPS阵列基板,其特征在于,所述LTPS阵列基板包括:
基体;
栅极,位于所述基体上;
依次形成于包括所述栅极的所述基体上的第一绝缘层、多晶硅层、第二绝缘层,所述第二绝缘层内形成有第一接触孔;
源极和漏极,位于所述第二绝缘层上,且所述源极和所述漏极可通过所述第一接触孔与所述多晶硅层电连接;
平坦钝化层,位于由所述源极和所述漏极组成的源漏电极层上,所述平坦钝化层内形成有暴露所述漏极的表面的第二接触孔;
第三绝缘层,位于所述平坦钝化层上且未覆盖所述第二接触孔;
像素电极,位于所述平坦钝化层上且所述像素电极可通过所述第二接触孔与所述漏极电连接。
9.根据权利要求8所述的LTPS阵列基板,其特征在于,所述LTPS阵列基板还包括缓冲层,所述缓冲层位于未被所述栅极覆盖的所述基体上,且所述缓冲层的上表面和所述栅极的上表面构成一平面。
10.根据权利要求8所述的LTPS阵列基板,其特征在于,所述LTPS阵列基板还包括公共电极层,所述公共电极层位于所述平坦钝化层上的所述第二接触孔远离所述薄膜晶体管的一侧。
CN201510310280.0A 2015-06-08 2015-06-08 Ltps阵列基板及其制造方法 Pending CN105097827A (zh)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201510310280.0A CN105097827A (zh) 2015-06-08 2015-06-08 Ltps阵列基板及其制造方法
US14/762,458 US9893097B2 (en) 2015-06-08 2015-06-17 LTPS array substrate and method for producing the same
PCT/CN2015/081635 WO2016197400A1 (zh) 2015-06-08 2015-06-17 Ltps阵列基板及其制造方法
US15/863,988 US20180130830A1 (en) 2015-06-08 2018-01-08 Ltps array substrate and method for producing the same
US15/863,989 US20180122840A1 (en) 2015-06-08 2018-01-08 Ltps array substrate and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510310280.0A CN105097827A (zh) 2015-06-08 2015-06-08 Ltps阵列基板及其制造方法

Publications (1)

Publication Number Publication Date
CN105097827A true CN105097827A (zh) 2015-11-25

Family

ID=54577892

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510310280.0A Pending CN105097827A (zh) 2015-06-08 2015-06-08 Ltps阵列基板及其制造方法

Country Status (3)

Country Link
US (3) US9893097B2 (zh)
CN (1) CN105097827A (zh)
WO (1) WO2016197400A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017173727A1 (zh) * 2016-04-05 2017-10-12 武汉华星光电技术有限公司 一种ltps阵列基板的制造方法
CN111129032A (zh) * 2019-12-19 2020-05-08 武汉华星光电技术有限公司 一种阵列基板及其制作方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016093122A1 (ja) * 2014-12-09 2016-06-16 シャープ株式会社 表示パネル用基板の製造方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1921076A (zh) * 2006-09-25 2007-02-28 广辉电子股份有限公司 薄膜晶体管的制造方法
CN102723307A (zh) * 2011-03-30 2012-10-10 京东方科技集团股份有限公司 一种制备阵列基板的方法及tft结构
US20130168683A1 (en) * 2011-12-30 2013-07-04 Samsung Display Co., Ltd. Thin film transistor and manufacturing method thereof
CN104466020A (zh) * 2014-12-12 2015-03-25 深圳市华星光电技术有限公司 一种ltps像素单元及其制造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103677A (ja) * 1983-11-11 1985-06-07 Seiko Instr & Electronics Ltd 薄膜トランジスタの製造方法
US5602047A (en) * 1996-06-13 1997-02-11 Industrial Technology Research Institute Process for polysilicon thin film transistors using backside irradiation and plasma doping
JP2001119029A (ja) * 1999-10-18 2001-04-27 Fujitsu Ltd 薄膜トランジスタ及びその製造方法及びそれを備えた液晶表示装置
KR100731750B1 (ko) * 2005-06-23 2007-06-22 삼성에스디아이 주식회사 박막트랜지스터 및 이를 이용한 유기전계발광표시장치의제조방법
KR101484297B1 (ko) * 2007-08-31 2015-01-19 가부시키가이샤 한도오따이 에네루기 켄큐쇼 표시장치 및 표시장치의 제작방법
KR20090095181A (ko) * 2008-03-05 2009-09-09 삼성전자주식회사 금속배선 형성용 식각액 조성물, 이 조성물을 이용한도전막의 패터닝 방법 및 평판 표시 장치의 제조방법
KR101283009B1 (ko) * 2011-05-26 2013-07-05 주승기 전기 도금장치 및 전기 도금방법
US20150316814A1 (en) * 2012-12-12 2015-11-05 Sharp Kabushiki Kaisha Liquid-crystal display panel, liquid-crystal display, and method for manufacturing liquid-crystal display panels
JP5557304B1 (ja) * 2013-09-26 2014-07-23 国立大学法人東北大学 有機半導体素子及びそれを備えたcmis半導体装置
CN104882485A (zh) * 2015-03-30 2015-09-02 深超光电(深圳)有限公司 薄膜晶体管及其制造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1921076A (zh) * 2006-09-25 2007-02-28 广辉电子股份有限公司 薄膜晶体管的制造方法
CN102723307A (zh) * 2011-03-30 2012-10-10 京东方科技集团股份有限公司 一种制备阵列基板的方法及tft结构
US20130168683A1 (en) * 2011-12-30 2013-07-04 Samsung Display Co., Ltd. Thin film transistor and manufacturing method thereof
CN104466020A (zh) * 2014-12-12 2015-03-25 深圳市华星光电技术有限公司 一种ltps像素单元及其制造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017173727A1 (zh) * 2016-04-05 2017-10-12 武汉华星光电技术有限公司 一种ltps阵列基板的制造方法
CN111129032A (zh) * 2019-12-19 2020-05-08 武汉华星光电技术有限公司 一种阵列基板及其制作方法

Also Published As

Publication number Publication date
US20180130830A1 (en) 2018-05-10
US20180122840A1 (en) 2018-05-03
US9893097B2 (en) 2018-02-13
WO2016197400A1 (zh) 2016-12-15
US20170141139A1 (en) 2017-05-18

Similar Documents

Publication Publication Date Title
US10707236B2 (en) Array substrate, manufacturing method therefor and display device
CN102074502B (zh) 制造阵列基板的方法
CN108538860B (zh) 顶栅型非晶硅tft基板的制作方法
CN105702623B (zh) Tft阵列基板的制作方法
CN104752343A (zh) 双栅极氧化物半导体tft基板的制作方法及其结构
CN104867959A (zh) 双栅极氧化物半导体tft基板的制作方法及其结构
CN103149760A (zh) 薄膜晶体管阵列基板、制造方法及显示装置
US20160365430A1 (en) Thin film transistor and manufacturing method thereof, array substrate and manufacturing method thereof
CN104900654A (zh) 双栅极氧化物半导体tft基板的制作方法及其结构
CN105374749B (zh) 一种薄膜晶体管及其制造方法
CN104867870A (zh) 双栅极氧化物半导体tft基板的制作方法及其结构
TW201622158A (zh) 薄膜電晶體以及其製作方法
CN108231553B (zh) 薄膜晶体管的制作方法及阵列基板的制作方法
KR20150004536A (ko) 박막 트랜지스터를 포함하는 표시 기판 및 이의 제조 방법
US10170506B2 (en) LTPS array substrate and method for producing the same
CN108550625A (zh) 一种薄膜晶体管及其制作方法
CN109166802A (zh) Ltps阵列基板及其制造方法、显示面板
CN105097827A (zh) Ltps阵列基板及其制造方法
CN108711548B (zh) 金属氧化物薄膜晶体管及其制作方法、显示器
CN110993612A (zh) 阵列基板及其制作方法
US10629746B2 (en) Array substrate and manufacturing method thereof
TW201523738A (zh) 薄膜電晶體基板及其製造方法
CN109037151B (zh) 一种阵列基板的制备方法
CN109037241B (zh) Ltps阵列基板及其制造方法、显示面板
CN103700626B (zh) 一种阵列基板的制作方法、阵列基板和显示装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20151125

RJ01 Rejection of invention patent application after publication