CN107357068A - 一种窄边框显示面板及制造方法 - Google Patents

一种窄边框显示面板及制造方法 Download PDF

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CN107357068A
CN107357068A CN201710602002.1A CN201710602002A CN107357068A CN 107357068 A CN107357068 A CN 107357068A CN 201710602002 A CN201710602002 A CN 201710602002A CN 107357068 A CN107357068 A CN 107357068A
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metal wire
display panel
narrow frame
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binding area
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查国伟
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Wuhan China Star Optoelectronics Technology Co Ltd
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Priority to CN201710602002.1A priority Critical patent/CN107357068A/zh
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Priority to PCT/CN2017/114533 priority patent/WO2019015216A1/zh
Priority to US15/745,102 priority patent/US20190385976A1/en
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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
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    • 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
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611Control of matrices with row and column drivers
    • HELECTRICITY
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    • H01L23/00Details of semiconductor or other solid state devices
    • H01L23/52Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
    • H01L23/538Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames the interconnection structure between a plurality of semiconductor chips being formed on, or in, insulating substrates
    • H01L23/5387Flexible insulating substrates
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    • H01ELECTRIC ELEMENTS
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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
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/133305Flexible substrates, e.g. plastics, organic film
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    • 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
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    • 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
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    • 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
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Abstract

本发明提供一种窄边框显示面板及制造方法,窄边框显示面板包括有:显示模组,其包含有显示驱动电路、栅极电路,并设置有显示驱动电路及栅极电路的绑定区;柔性基板,其表面上设置有GOA电路,其一侧绑定到绑定区,另一侧弯折使GOA电路粘贴在显示模组的背侧;可弯折的金属线,其设置在柔性基板上,其一端绑定在绑定区与显示驱动电路及栅极电路连接,另一端与GOA电路连接。本发明的窄边框显示面板可以节省显示模组侧边的空间,进行可以缩小显示面板的宽度。

Description

一种窄边框显示面板及制造方法
技术领域
本发明涉及显示技术领域,尤其涉及一种窄边框显示面板及制造方法。
背景技术
随着显示模组技术的不断更新,小尺寸面板,特别是4-7寸的手机面板正逐渐朝着轻薄化,高屏占比、超窄边框乃至无边框化发展,传统结构的LTPS(Low Temperature Poly-silicon,低温多晶硅技术)面板技术通过压缩GOA(Gate Driver on Array,阵列基板行驱动)电路尺寸、应用TDDI(Touch and Display Driver Integration,触控与显示驱动器集成)的IC芯片以及缩小走线间的距离,边框已经接近了0.7mm的水平,然而为了保证GOA电路的有效工作、显示面板的信赖性测试和各种信号线之间相互隔断,特别是侧向边框的压缩已经接近了极限。但是显示技术的发展总是随着需求的驱动而不断进步,窄边框显示面板的需求从提高屏占比的角度显著改善了显示屏的视觉冲击力。
目前从市面上窄边框的策略而言,包括Nubia(努比亚手机)Z系列采用厚重的弧面结构形成窄边框错觉的视觉无边框技术,或者未来可能应用的通过柔性手段将边框隐藏等技术,从技术策略而言都是属于虚拟窄边框技术。如何进一步压缩显示面板的侧向边框,同时保证显示的可靠性等问题依然面临较大的挑战。
发明内容
为解决上述技术问题,本发明提供一种窄边框显示面板及制造方法,节省了显示模组侧向的GOA电路所需的空间。
本发明提供的一种窄边框显示面板,包括有:
显示模组,其包含有显示驱动电路、栅极电路,并设置有所述显示驱动电路及所述栅极电路的绑定区;
柔性基板,其表面上设置有GOA电路,其一侧绑定到所述绑定区,另一侧弯折使所述GOA电路粘贴在所述显示模组的背侧;
可弯折的金属线,其设置在所述柔性基板上,其一端绑定在所述绑定区与所述显示驱动电路及所述栅极电路连接,另一端与所述GOA电路连接。
优选地,所述金属线为网格状金属线,且所述金属线为金或者铜制成。
优选地,所述金属线与所述绑定区之间的绑定处涂有丙烯酸酯和/或环氧树脂制成的胶。
优选地,所述显示模组包括有TFT阵列基板、位于所述TFT阵列基板上层的滤光片、位于所述TFT阵列基板下层的背光模组,所述显示驱动电路、所述栅极电路、所述绑定区设置在所述TFT阵列基板上;
所述GOA电路粘贴在所述背光模组上。
优选地,所述滤光片的左右侧及下侧在所述TFT阵列基板的范围内。
本发明还提供一种窄边框显示面板制造方法,包括下述步骤:
在柔性基板上制备GOA电路及可弯折的金属线,所述金属线的一端与所述GOA电路连接;
在显示模组上提供显示驱动电路及栅极电路的绑定区;
将所述柔性基板的一端、所述金属线的另一端绑定到所述绑定区;
将所述柔性基板的另一端弯折,使所述GOA电路粘贴到所述显示模组的背侧。
优选地,还包括下述步骤:
在所述金属线与所述绑定区之间的绑定处涂上丙烯酸酯和/或环氧树脂制成的胶。
优选地,所述金属线为网格状金属线,且所述金属线为金或者铜制成。
优选地,还包括下述步骤:
提供一TFT阵列基板,在所述TFT阵列基板上制备所述显示驱动电路及所述栅极电路;
提供一滤光片,并切割掉所述滤光片上的第一玻璃基板的预设部分范围,使所述第一玻璃基板的长宽均小于所述TFT阵列基板的第二玻璃基板的长宽;
提供一背光模组,将所述TFT阵列基板的上侧与所述滤光片进行组合,下侧与所述背光模组进行组合,得到所述显示模组。
实施本发明,具有如下有益效果:本发明的显示面板不需要将GOA电路制备在显示模组的侧边,而是将其制备在柔性基板上,再将柔性基板弯折,使其粘贴在显示模组的背侧,节省了显示模组侧向的GOA电路所需的空间,因此可以将显示模组侧向尺寸(即宽度)缩减,制成窄边框的显示面板。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1是本发明提供的窄边框显示面板的侧视图。
图2是本发明提供的窄边框显示面板的俯视图。
图3是本发明提供的窄边框显示面板的仰视图。
图4是本发明提供的金属线的物理结构图。
图5是本发明提供的窄边框显示面板制造方法的流程图。
具体实施方式
本发明提供一种窄边框显示面板,如图1所示,该显示面板包括有:显示模组1、柔性基板2、可弯折的金属线(图中未示出)。其中,柔性基板2可以是PI(聚酰亚胺)材料制成的柔性透明薄膜。
如图1和图2所示,显示模组1包含有显示驱动电路15、栅极电路(即Gate 电路,图中未示出),并设置有显示驱动电路15及栅极电路的绑定区14(即Bonding Pad),绑定区14用于绑定接合其他电路,使其他电路与显示驱动电路15和栅极电路连接。
柔性基板2的表面上设置有GOA(Gate Driver on Array,阵列基板行驱动)电路3,其一侧绑定到绑定区14,如图3所示,柔性基板2的另一侧弯折使GOA电路3粘贴在显示模组1的背侧。其中,GOA电路即是栅极驱动单元,用于显示面板水平扫面线的驱动电路。GOA电路3绑定到绑定区14后,与显示驱动电路15、行扫描驱动电路接通,显示驱动电路15用于输出控制信号至GOA电路3,GOA电路3根据该控制信号来控制栅极电路,通过控制栅极电路来实现对像素单元的逐行驱动扫描。
GOA电路3的厚度很小,粘贴在显示模组1的背侧,对整体的显示模组1几乎没有影响,其次,当缩小显示模组1的边框,也即需要缩小绑定区14的长度,导致显示模组1与柔性基板2之间的拉合力减小,但是,将GOA电路3粘贴在显示模组1的背侧进行固定,即使绑定区14的长度较短,也可以保证柔性基板2与显示模组1之间有较大的拉合力。
金属线设置在柔性基板2上,其一端绑定在绑定区14与显示驱动电路15及栅极电路连接,另一端与GOA电路3连接。具体而言,金属线通过接合技术(Bonding技术,即电路之间的焊接技术,包括球焊,平焊等)压合绑定到绑定区14,所需的金属线需延展性较好,金属线可以贴合在柔性基板2的表面,在实现良好的弯折性的同时保证GOA电路3与显示驱动电路15及栅极电路之间信号的传输。
通过缩小绑定区14的长度,可以有效缩小显示模组的边框宽度,也即可以缩小显示面板的边框宽度,一般而言,可以缩小200-500微米。
进一步地,如图4所示,金属线为网格状金属线,且金属线为金或者铜制成。在金属线上制备细密的孔洞形成网格状结构,能够进一步增强弯折能力,并且金或者铜材料制成的金属线的延展性、弯折性都比较良好。
金属线可以在制备GOA电路3的同时制备,金属线在制备时,可以利用GOA电路3中任意一层延展性好的金属层制备,无需额外光罩,金属线优选金材料制成,由金材料制成的金属线具有极佳的延展性。同时,网格状的金属线除了具有良好的信号导通功能之外,而且还不会轻易被折断,因此也具有防断路的功能。
进一步地,显示模组1包括有TFT(薄膜晶体管)阵列基板12、位于TFT阵列基板12上层的滤光片11、位于TFT阵列基板12下层的背光模组13,显示驱动电路15、栅极电路、绑定区14设置在TFT阵列基板12上。GOA电路3粘贴在背光模组13上。
进一步地,滤光片11的左右侧及下侧在TFT阵列基板12的范围内。具体地,滤光片11上的玻璃基板的左右侧及下侧均在TFT阵列基板12的玻璃基板范围内。因为TFT阵列基板12上的电路上设置有绑定区14,绑定区14需要与其他电路接合绑定,滤光片11的左右侧及下侧在TFT阵列基板12的范围内,是为了预留空间,方便后续其他电路接合绑定的操作。
进一步地,金属线与绑定区14之间的绑定处涂有丙烯酸酯和/或环氧树脂制成的胶。丙烯酸酯和/或环氧树脂制成的胶具有高阻抗的特性,当缩小显示面板的边框时,外界的静电离子和水汽比较容易进入显示面板内部,尤其在高温环境下,静电离子和水汽扩散速度较快;因此,在金属线与绑定区14之间的绑定处涂上丙烯酸酯和/或环氧树脂制成的胶,可以避免外界的静电离子或者水汽通过滤光片11和TFT阵列基板12之间的空隙进入到显示模组1内部,提高了显示模组1的水煮高温高湿度等信赖性测试的能力。
在实际应用中,如果显示模组1的边框过窄,静电离子进入显示模组1内部,比较容易在绑定区14的表面聚集,形成一定的电势差,因此会对显示模组1造成一定的损坏,而丙烯酸酯和/或环氧树脂制成的胶具有高阻抗特性,可以避免绑定区14的表面形成较大的电势差,避免了其对显示模组1造成损坏,因此也避免了显示模组1因为过窄而带来的抗ESD(静电释放)能力弱的问题。
本发明还提供一种窄边框显示面板制造方法,如图5所示,该方法包括下述步骤:
在柔性基板2上制备GOA电路3及可弯折的金属线,金属线的一端与GOA电路3连接;
在显示模组1上提供显示驱动电路15及栅极电路的绑定区14;
将柔性基板2的一端、金属线的另一端绑定到绑定区14;
将柔性基板2的另一端弯折,使GOA电路3粘贴到显示模组1的背侧。
进一步地,窄边框显示面板制造方法还包括下述步骤:
在金属线与绑定区14之间的绑定处涂上丙烯酸酯和/或环氧树脂制成的胶。
进一步地,金属线为网格状金属线,且金属线为金或者铜制成。
进一步地,窄边框显示面板制造方法还包括下述步骤:
提供一TFT阵列基板12,在TFT阵列基板12上制备显示驱动电路15及栅极电路;
提供一滤光片11,并切割掉滤光片11上的第一玻璃基板的预设部分范围,使第一玻璃基板的长宽均小于TFT阵列基板12的第二玻璃基板的长宽;
提供一背光模组13,将TFT阵列基板12的上侧与滤光片11进行组合,下侧与背光模组13进行组合,得到显示模组1。
综上所述,本发明通过柔性基板2的表面上设置有GOA电路3,将柔性基板2的一侧绑定到绑定区14,另一侧弯折使GOA电路3粘贴在显示模组1的背侧,柔性基板2上还制备了可弯折的金属线,金属线的一端与GOA电路3连接,另一端绑定到显示模组1上的绑定区14,通过绑定区14与显示驱动电路15以及栅极电路连接。
相对于现有的技术方案,本发明的显示面板不需要将GOA电路3制备在显示模组1的侧边,而是将其制备在柔性基板2上,再将柔性基板2弯折,使其粘贴在显示模组1的背侧,节省了显示模组1侧向的GOA电路3所需的空间大约200-500微米左右,因此可以将显示模组1侧向尺寸(即宽度)缩减,制成窄边框的显示面板。
以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明,不能认定本发明的具体实施只局限于这些说明。对于本发明所属技术领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干简单推演或替换,都应当视为属于本发明的保护范围。

Claims (9)

1.一种窄边框显示面板,其特征在于,包括有:
显示模组,其包含有显示驱动电路、栅极电路,并设置有所述显示驱动电路及所述栅极电路的绑定区;
柔性基板,其表面上设置有GOA电路,其一侧绑定到所述绑定区,另一侧弯折使所述GOA电路粘贴在所述显示模组的背侧;
可弯折的金属线,其设置在所述柔性基板上,其一端绑定在所述绑定区与所述显示驱动电路及所述栅极电路连接,另一端与所述GOA电路连接。
2.根据权利要求1所述的窄边框显示面板,其特征在于,所述金属线为网格状金属线,且所述金属线为金或者铜制成。
3.根据权利要求1所述的窄边框显示面板,其特征在于,所述金属线与所述绑定区之间的绑定处涂有丙烯酸酯和/或环氧树脂制成的胶。
4.根据权利要求1所述的窄边框显示面板,其特征在于,所述显示模组包括有TFT阵列基板、位于所述TFT阵列基板上层的滤光片、位于所述TFT阵列基板下层的背光模组,所述显示驱动电路、所述栅极电路、所述绑定区设置在所述TFT阵列基板上;
所述GOA电路粘贴在所述背光模组上。
5.根据权利要求4所述的窄边框显示面板,其特征在于,所述滤光片的左右侧及下侧在所述TFT阵列基板的范围内。
6.一种窄边框显示面板制造方法,其特征在于,包括下述步骤:
在柔性基板上制备GOA电路及可弯折的金属线,所述金属线的一端与所述GOA电路连接;
在显示模组上提供显示驱动电路及栅极电路的绑定区;
将所述柔性基板的一端、所述金属线的另一端绑定到所述绑定区;
将所述柔性基板的另一端弯折,使所述GOA电路粘贴到所述显示模组的背侧。
7.根据权利要求6所述的窄边框显示面板制造方法,其特征在于,还包括下述步骤:
在所述金属线与所述绑定区之间的绑定处涂上丙烯酸酯和/或环氧树脂制成的胶。
8.根据权利要求6所述的窄边框显示面板制造方法,其特征在于,所述金属线为网格状金属线,且所述金属线为金或者铜制成。
9.根据权利要求6所述的窄边框显示面板制造方法,其特征在于,还包括下述步骤:
提供一TFT阵列基板,在所述TFT阵列基板上制备所述显示驱动电路及所述栅极电路;
提供一滤光片,并切割掉所述滤光片上的第一玻璃基板的预设部分范围,使所述第一玻璃基板的长宽均小于所述TFT阵列基板的第二玻璃基板的长宽;
提供一背光模组,将所述TFT阵列基板的上侧与所述滤光片进行组合,下侧与所述背光模组进行组合,得到所述显示模组。
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