CN104090401A - 阵列基板及其制备方法、显示装置 - Google Patents
阵列基板及其制备方法、显示装置 Download PDFInfo
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- CN104090401A CN104090401A CN201410273263.XA CN201410273263A CN104090401A CN 104090401 A CN104090401 A CN 104090401A CN 201410273263 A CN201410273263 A CN 201410273263A CN 104090401 A CN104090401 A CN 104090401A
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- 239000000463 material Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 29
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- 239000010409 thin film Substances 0.000 claims description 17
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- 229910052782 aluminium Inorganic materials 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229910052750 molybdenum Inorganic materials 0.000 description 9
- 229920002120 photoresistant polymer Polymers 0.000 description 8
- 239000012212 insulator Substances 0.000 description 7
- 239000010949 copper Substances 0.000 description 6
- 230000005684 electric field Effects 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 239000004411 aluminium Substances 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 4
- 229910052733 gallium Inorganic materials 0.000 description 4
- 229910003437 indium oxide Inorganic materials 0.000 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 description 4
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 4
- 238000001755 magnetron sputter deposition Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
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- 229910052725 zinc Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- 229910001257 Nb alloy Inorganic materials 0.000 description 3
- 229910000583 Nd alloy Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- VVTQWTOTJWCYQT-UHFFFAOYSA-N alumane;neodymium Chemical compound [AlH3].[Nd] VVTQWTOTJWCYQT-UHFFFAOYSA-N 0.000 description 3
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- 238000005530 etching Methods 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
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- 238000002161 passivation Methods 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 3
- 229910017107 AlOx Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical group [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
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- 239000013078 crystal Substances 0.000 description 2
- YZZNJYQZJKSEER-UHFFFAOYSA-N gallium tin Chemical compound [Ga].[Sn] YZZNJYQZJKSEER-UHFFFAOYSA-N 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- OFIYHXOOOISSDN-UHFFFAOYSA-N tellanylidenegallium Chemical compound [Te]=[Ga] OFIYHXOOOISSDN-UHFFFAOYSA-N 0.000 description 2
- 238000002207 thermal evaporation Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
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- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- H01L27/124—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 layout of the wiring layers specially adapted to the circuit arrangement, e.g. scanning lines in LCD pixel circuits
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- G02F1/00—Devices 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
- G02F1/01—Devices 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
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- G02F1/13—Devices 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
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- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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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
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- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
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- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL 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
- G02F1/00—Devices 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
- G02F1/01—Devices 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
- G02F1/13—Devices 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
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- G02F—OPTICAL 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
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
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- Computer Hardware Design (AREA)
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Abstract
本发明提供一种阵列基板及其制备方法、显示装置,属于显示技术领域,其可解决现有的阵列基板的公共电极线本身的电阻较大,带来(RC)信号延迟问题。本发明的阵列基板,包括像素电极,设于像素电极上方的公共电极,以及与公共电极电性连接的公共电极线,其中,像素电极与公共电极之间相互绝缘设置,该阵列基板还包括第一电阻线层,以及设置在第一电阻线层上方且与第一电阻线层相互绝缘设置的第二电阻线层,所述第一电阻线层设置在公共电极线上并与公共电极线接触;第二电阻线层通过贯穿第一电阻线层和第一电阻线层与第二电阻线层之间的绝缘层的过孔与公共电极线连接。
Description
技术领域
本发明属于显示技术领域,具体涉及一种阵列基板及其制备
方法、显示装置。
背景技术
薄膜晶体管液晶显示器(Thin Film Transistor Liquid CrystalDisplay,简称TFT-LCD)是一种重要的平板显示设备。根据驱动液晶的电场方向,可以分为垂直电场型和水平电场型。垂直电场型需要在阵列基板上形成像素电极,在彩膜基板上形成公共电极,如常用的TN模式;而水平电场型则需要在阵列基板上同时形成像素电极和公共电极;目前的水平电场型显示技术可以提高TFT-LCD产品的画面品质,具有高分辨率、高透过率、低功耗、宽视角、高开口率、低色差、无挤压水波纹(push Mura)等优点。
现有的阵列基板主要包括薄膜晶体管、栅线、数据线、像素电极、公共电极。以下通过包括底栅型薄膜晶体管的阵列基板进行说明。
如图1所示,该阵列基板包括是形成在基底1上的栅极2、栅线,以及公共电极线(三者同层、同材料);形成在栅极2、栅线、公共电极线上方的栅极绝缘层3;形成在栅极绝缘层3上方的有源层4;形成在有源层4上方的源极5-1、漏极5-2,以及数据线10(三者同层、同材料);形成在源极5-1、漏极5-2、数据线上方的平坦化层,形成在平坦化层上方并通过贯穿平坦化层的第一过孔与漏极5-2连接的板状像素电极;形成在像素电极6上方的钝化层;形成在钝化层上方的狭缝状公共电极8,该公共电极8通过贯穿钝化层、平坦化层、栅极绝缘层的第二过孔与公共电极线12连接。其中,薄膜晶体管的栅极2、源极5-1、漏极5-2均采用金属材料,像素电极6和公共电极8通常采用透明导电的氧化铟锡(ITO)材料。
通过上述结构发明人发现现有技术中的阵列基板至少存在如下问题:由于公共电极线本身电阻较大,所以当通过公共电极线给公共电极加载电压时,由于公共电极线本身的电阻较大,故其会带来(RC)信号延迟,以及公共电极线上产生压降(IR drop)的问题;同时由于公共电极线与数据线存在交叠,必然存在较大的耦合电容,从而公共电极上的负载加大,导致公共电极上的波动较大,引起的绿附(greenish)较严重。
发明内容
本发明所要解决的技术问题包括,针对现有的阵列基板存在的上述的问题,提供一种缓解由于公共电极线电阻过大,导致信号延迟、失真问题的阵列基板及其制备方法、显示装置。
解决本发明技术问题所采用的技术方案的实施方式包括:一种阵列基板,包括像素电极,设于像素电极上方的公共电极,以及与公共电极电性连接的公共电极线,其中,所述像素电极与所述公共电极之间相互绝缘设置,其中,所述阵列基板还包括第一电阻线层,以及设置在第一电阻线层上方且与第一电阻线层相互绝缘设置的第二电阻线层,
所述第一电阻线层设置在所述公共电极线上并与所述公共电极线接触;
所述第二电阻线层通过贯穿所述第一电阻线层和所述第一电阻线层与所述第二电阻线层之间的绝缘层的过孔与所述公共电极线连接。
本发明实施方式的阵列基板中的公共电极线、第一电阻线层以及第二电阻线层并联的结构,实质等同于现有技术中的公共电极线的结构,将公共电极线和第一电阻线层、第二电阻线层分别等效成电阻R1、R2、R3,公共电极线和第一电阻线层与第二电阻线层的电阻和为R4,由于公共电极线上设置有第一电阻线层,此时相当于电阻R1、R2、R3并联,根据并联电阻公式得知:R4=1/R1+1/R2+1/R3,故R4小于R1、R2、R3中任何一个电阻的阻值。也就是说本实施例中公共电极线、第一电阻线层以及第二电阻线层的设置方式相当于降低了公共电极线的电阻,从而可以有效的缓解RC延迟的问题。
优选的是,所述第一电阻线层与所述像素电极同层间隔设置且材料相同。
优选的是,所述第二电阻线层与所述公共电极同层设置且材料相同,其中,第二电阻线层与所述公共电极连接。
优选的是,所述阵列基板还包括薄膜晶体管,所述薄膜晶体管的源极和漏极与数据线同层设置,且所述数据线与所述源极连接,所述数据线与所述公共电极线同层且平行设置。
进一步优选的是,所述薄膜晶体管的源极和漏极的材料与所述数据线、所述公共电极线的材料相同。
解决本发明技术问题所采用的技术方案的实施方式包括:一种阵列基板的制备方法,所述阵列基板为上述阵列基板,所述阵列基板的制备方法包括:
在基底上通过构图工艺形成包括公共电极线的图形;
在完成上述步骤的基底上,通过构图工艺形成包括与所述公共电极线接触的第一电阻线层的图形;
在完成上述步骤的基底上形成绝缘层;
在完成上述步骤的基底上,通过构图工艺形成贯穿绝缘层和第一电阻线层的过孔;
在完成上述步骤的基底上,通过构图工艺形成包括第二电阻线层的图形,其中第二电阻线层通过过孔与公共电极线连接。
优选的是,在所述形成与公共电极线接触的第一电阻线层的图形的同时还形成包括像素电极的图形,其中像素电极与第一电阻线层间隔设置。
优选的是,在所述形成第二电阻线层的图形的同时还形成包括公共电极的图形,其中公共电极与第二电阻线层连接。
优选的是,所述在基底上通过构图工艺形成包括公共电极线的图形的同时还形成有源极、漏极、数据线,其中,所述数据线与所述源极连接,且所述数据线与所述公共电极线平行设置。
解决本发明技术问题所采用的技术方案的实施方式还包括一种显示装置,其包括上述阵列基板。
附图说明
图1为本发明的实施例1的阵列基板的结构图;
图2为本发明的实施例1的阵列基板的平面图;
图3为图2的A-A’剖视图。
其中附图标记为:1、基底;2、栅极;3、栅极绝缘层;4、有源层;5-1、源极;5-2、漏极;6、像素电极;7、绝缘层;8、公共电极;9第一电阻线层;10、数据线;11、第二电阻线层;12、公共电极线。
具体实施方式
为使本领域技术人员更好地理解本发明的技术方案,下面结合附图和具体实施方式对本发明作进一步详细描述。
实施例1:
结合图2至3所示,本实施例提供一种阵列基板,其包括像素电极6,设于像素电极6上方的公共电极8,以及与公共电极8电性连接的公共电极线12,其中,所述像素电极6与所述公共电极8之间相互绝缘设置。该阵列基板还包括第一电阻线层9,以及设置在第一电阻线层9上方且与第一电阻线层9相互绝缘设置的第二电阻线层11,所述第一电阻线层9设置在所述公共电极线12上并与所述公共电极线12接触;所述第二电阻线层11通过贯穿所述第一电阻线层9和所述第一电阻线层9与所述第二电阻线层11之间的绝缘层7的过孔与公共电极线12连接。
需要说明的是,在本实施例中所述公共电极8为狭缝电极,所述像素电极6为板状电极;或者所述公共电极8为狭缝电极,所述像素电极6同样为狭缝电极,此时公共电极8和像素电极6至少部分不重叠。需注意的是本发明的实施方式不限于这种显示模式的阵列基板,还可以应用于其他的存在相同技术问题的阵列基板中。
在本实施例的阵列基板中,公共电极线12、第一电阻线层9以及第二电阻线层11构成的结构在电连接关系上起到了相当于并联的作用,将公共电极线12和第一电阻线层9、第二电阻线层11分别等效成电阻R1、R2、R3,公共电极线12和第一电阻线层9与第二电阻线层11的电阻和为R4,由于公共电极线12上设置有第一电阻线层9,此时相当于电阻R1、R2、R3并联,根据并联电阻公式得知:R4=1/R1+1/R2+1/R3,故R4小于R1、R2、R3中任何一个电阻的阻值。也就是说本实施例中公共电极线12、第一电阻线层9以及第二电阻线层11的设置方式相当于降低了公共电极线12的电阻,从而可以有效的缓解RC延迟的问题。
在本实施例中,优选地第一电阻线层9与所述像素电极6同层间隔设置,且所述第一电阻线层9的材料与所述像素电极6的材料相同。像素电极6和第一电阻线层9的材料为可以是包含In(铟)、Ga(镓)、Zn(锌)、O(氧)、Sn(锡)等元素的薄膜通过溅射形成,其中薄膜中必须包含氧元素和其他两种或两种以上的元素,如氧化铟镓锌(IGZO)、氧化铟锌(IZO)、氧化铟锡(InSnO)、氧化铟镓锡(InGaSnO)等。由于第一电阻线层9与像素电极6同层且材料相同,此时可以通过一次构图工艺形成包括第一电阻线层9和像素电极6的图形,从而不增加工艺步骤。当然第一电阻线层9和像素电极6也可以通过两次构图工艺分别形成。
在本实施例中,优选地第二电阻线层11与公共电极8同层设置且材料相同,其中,第二电阻线层11与所述公共电极8连接。公共电极8和第二电阻线层11的材料为可以是包含In(铟)、Ga(镓)、Zn(锌)、O(氧)、Sn(锡)等元素的薄膜通过溅射形成,其中薄膜中必须包含氧元素和其他两种或两种以上的元素,如氧化铟镓锌(IGZO)、氧化铟锌(IZO)、氧化铟锡(InSnO)、氧化铟镓锡(InGaSnO)等。由于第一电阻线层9与像素电极6同层且材料相同,此时可以通过一次构图工艺形成包括第一电阻线层9和像素电极6的图形,从而不增加工艺步骤。当然第一电阻线层9和像素电极6也可以通过两次构图工艺分别形成。
本实施例的阵列基板优选地还包括薄膜晶体管,以包括底栅型薄膜晶体管为例具体说明该阵列基板的结构。该阵列基板依次包括设置在基底1上的薄膜晶体管的栅极2、栅极绝缘层3、有源层4,以及有源层4上方的源极5-1、漏极5-2、数据线10、公共电极线12,其中,源极5-1和漏极5-2与数据线10同层设置,且所述数据线10与所述源极5-1连接,所述数据线10与所述公共电极线12同层且平行设置。此时由于数据线10与公共电极线12同层且平行设置,则可以避免现有技术中数据线10与公共电极线12之间存在交叠从而产生存储电容的问题,进而可以有效的降低公共电极8上的负载,缓解公共电极8上的波动而引起的绿附(greenish)的问题。
进一步优选地,所述薄膜晶体管的源极5-1和漏极5-2的材料与所述数据线10、所述公共电极线12的材料相同。其中,所述源、漏极5-2材料可以是钼(Mo)、钼铌合金(MoNb)、铝(Al)、铝钕合金(AlNd)、钛(Ti)和铜(Cu)中的一种或多种材料形成的,优先为Mo、Al或含Mo、Al的合金材料。由于薄膜晶体管的源极5-1、漏极5-2、数据线10、公共电极线12同层设置且材料相同,故源极5-1、漏极5-2、数据线10、公共电极线12可以采用一次构图工艺完成,因而不增加工艺步骤。
实施例2:
本实施例提供一种阵列基板的制备方法,以制备HADS模式的阵列基板的方法为例进行说明。该制备方法具体包括:
步骤一、在基底1上采用磁控溅射的方法沉积一层栅极金属层薄膜,通过构图工艺形成包括薄膜晶体管栅极2以及栅极线的栅极金属层的图形。
需要说明的是,基底1既可以指没有形成任何膜层的衬底,如白玻璃,也可以指形成有其他膜层或者图案的衬底,例如形成有缓冲层的衬底。构图工艺通常包括光刻胶涂敷、曝光、显影、刻蚀、光刻胶剥离等工艺。上述步骤即先形成栅极金属层薄膜,涂覆光刻胶覆盖栅极金属层薄膜;利用掩模板曝光,形成曝光区和非曝光区;进行显影去除了曝光区的光刻胶(以正性光刻胶为例),非曝光区光刻胶保留;刻蚀栅极金属层薄膜,非曝光区的栅极金属层薄膜由于光刻胶的保护而未被刻蚀,最后剥离光刻胶,形成包括薄膜晶体管栅极2以及栅极线的栅极金属层的图形。
其中,所述栅极金属层薄膜的材料可以为钼(Mo)、钼铌合金(MoNb)、铝(Al)、铝钕合金(AlNd)、钛(Ti)和铜(Cu)中的一种或它们中多种材料形成的单层或多层复合叠层,优选为Mo、Al或含Mo、Al的合金组成的单层或多层复合膜。
步骤二、在完成上述步骤的基底1上,采用热生长、常压化学气相沉积、低压化学气相沉积、等离子辅助体化学气相淀积、溅射等制备方法,形成栅极绝缘层3。
其中,所述栅极绝缘层3的材料可以为硅的氧化物(SiOx)、硅的氮化物(SiNx)、铪的氧化物(HfOx)、硅的氮氧化物(SiON)、铝的氧化物(AlOx)等中的一种或它们中多种材料组成的多层复合膜。
步骤三、在完成上述步骤基底1上,通过喷涂、真空蒸发,溶胶-凝胶、磁控溅射等依次沉积薄膜晶体管半导体有源层4薄膜,并通过构图工艺形成包括薄膜晶体管有源层4的图形。
步骤四、在完成上述步骤的基底1上,形成源漏金属层薄膜,并通过构图工艺同时形成包括薄膜晶体管的源极5-1、漏极5-2、数据线10、公共电极线12的图形,且通过各自源、漏接触区与各自的有源层4接触,数据线10与薄膜晶体管源极5-1连接,公共电极线12与数据线10平行设置。
其中,所述源漏金属层薄膜的材料可以是钼(Mo)、钼铌合金(MoNb)、铝(Al)、铝钕合金(AlNd)、钛(Ti)和铜(Cu)中的一种或多种材料形成的,优先为Mo、Al或含Mo、Al的合金材料。
步骤五、在完成上述步骤的基底1上,采用磁控溅射或热蒸发的方法,形成第一透明导电薄膜,并通过一次构图工艺形成包括第一电阻线层9和像素电极6的图形,且第一电阻线层9和像素电极6间隔设置。
其中,第一透明导电薄膜的材料为氧化铟锡(ITO)、氧化铟锌(IZO)或氧化铝锌等材料。
步骤六、在完成上述步骤的基底1上,采用热生长、常压化学气相沉积、低压化学气相沉积、等离子辅助体化学气相淀积、溅射等制备方法,形成绝缘层7。
其中,所述绝缘层7的材料可以为硅的氧化物(SiOx)、硅的氮化物(SiNx)、铪的氧化物(HfOx)、硅的氮氧化物(SiON)、铝的氧化物(AlOx)等中的一种或它们中多种材料组成的多层复合膜。
步骤七、在完成上述步骤的基底1上,刻蚀形成贯穿所述绝缘层7和所述第一电阻线层9的过孔,
步骤八、采用磁控溅射或热蒸发的方法,形成第二透明导电薄膜,通过构图工艺形成包括公共电极8和第二电阻线层11的图形,其中所述第二电阻线层11通过所述过孔与所述公共电极线12连接,第二电阻线层11与所述公共电极8连接。
其中,第二透明导电薄膜的材料与第一透明导电薄膜的材料相同。
在本实施例的阵列基板的制备方法中,降低了公共电极线12的电阻的同时没有增加工艺步骤。
实施例3:
本实施例提供一种显示装置,其包括实施例1中所述的阵列基板,该显示装置可以为:手机、平板电脑、电视机、显示器、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
本实施例的显示装置中具有实施例1中的阵列基板,故其性能更好。
当然,本实施例的显示装置中还可以包括其他常规结构,如电源单元、显示驱动单元等。
可以理解的是,以上实施方式仅仅是为了说明本发明的原理而采用的示例性实施方式,然而本发明并不局限于此。对于本领域内的普通技术人员而言,在不脱离本发明的精神和实质的情况下,可以做出各种变型和改进,这些变型和改进也视为本发明的保护范围。
Claims (10)
1.一种阵列基板,包括像素电极,设于像素电极上方的公共电极,以及与公共电极电性连接的公共电极线,其中,所述像素电极与所述公共电极之间相互绝缘设置,其特征在于,所述阵列基板还包括第一电阻线层,以及设置在第一电阻线层上方且与第一电阻线层相互绝缘设置的第二电阻线层,
所述第一电阻线层设置在所述公共电极线上并与所述公共电极线接触;
所述第二电阻线层通过贯穿所述第一电阻线层和所述第一电阻线层与所述第二电阻线层之间的绝缘层的过孔与所述公共电极线连接。
2.根据权利要求1所述的阵列基板,其特征在于,所述第一电阻线层与所述像素电极同层间隔设置且材料相同。
3.根据权利要求1或2所述的阵列基板,其特征在于,所述第二电阻线层与所述公共电极同层设置且材料相同,其中,第二电阻线层与所述公共电极连接。
4.根据权利要求1所述的阵列基板,其特征在于,所述阵列基板还包括薄膜晶体管,所述薄膜晶体管的源极和漏极与数据线同层设置,且所述数据线与所述源极连接,所述数据线与所述公共电极线同层且平行设置。
5.根据权利要求4所述的阵列基板,其特征在于,所述薄膜晶体管的源极和漏极的材料与所述数据线、所述公共电极线的材料相同。
6.一种阵列基板的制备方法,其特征在于,所述阵列基板为权利要求1至5中任意一项所述的阵列基板,所述阵列基板的制备方法包括:
在基底上通过构图工艺形成包括公共电极线的图形;
在完成上述步骤的基底上,通过构图工艺形成包括与所述公共电极线接触的第一电阻线层的图形;
在完成上述步骤的基底上形成绝缘层;
在完成上述步骤的基底上,通过构图工艺形成贯穿绝缘层和第一电阻线层的过孔;
在完成上述步骤的基底上,通过构图工艺形成包括第二电阻线层的图形,其中第二电阻线层通过过孔与公共电极线连接。
7.根据权利要求6所述的阵列基板的制备方法,其特征在于,在所述形成与公共电极线接触的第一电阻线层的图形的同时还形成包括像素电极的图形,其中像素电极与第一电阻线层间隔设置。
8.根据权利要求6或7所述的阵列基板的制备方法,其特征在于,在所述形成第二电阻线层的图形的同时还形成包括公共电极的图形,其中公共电极与第二电阻线层连接。
9.根据权利要求6所述的阵列基板的制备方法,其特征在于,所述在基底上通过构图工艺形成包括公共电极线的图形的同时还形成有源极、漏极、数据线,其中,所述数据线与所述源极连接,且所述数据线与所述公共电极线平行设置。
10.一种显示装置,其特征在于,所述显示装置包括权利要求1至5中任意一项所述的阵列基板。
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