CN105082231B - 显示面板及其切割方法 - Google Patents

显示面板及其切割方法 Download PDF

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CN105082231B
CN105082231B CN201410324452.5A CN201410324452A CN105082231B CN 105082231 B CN105082231 B CN 105082231B CN 201410324452 A CN201410324452 A CN 201410324452A CN 105082231 B CN105082231 B CN 105082231B
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edge
substrate
turnover
display panel
mother substrate
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CN105082231A (zh
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彭焕光
王韦迪
沈信旭
王艳丽
张炜
吴仕雄
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Innolux Corp
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Innolux Display Corp
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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
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    • H01L23/60—Protection against electrostatic charges or discharges, e.g. Faraday shields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
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Abstract

本发明是有关于一种显示面板及其切割方法，其中该显示面板包括：一第一基板，具有至少一第一侧边、一第一边缘及连接第一侧边与第一边缘的一转折边缘，其中转折边缘呈现弧状；以及一第二基板，与第一基板相对设置，具有至少一第二边缘并与该第一边缘部分重叠，其中在第一基板的转折边缘处，第二基板突出于转折边缘；其中，第一侧边的延伸线与第二边缘形成一交点，且交点与转折边缘间的最小距离介于0.1mm至2.1mm之间。

Description

显示面板及其切割方法
技术领域
本发明是关于一种显示面板及其切割方法，尤指一种使用弧状切割的切割方法及所形成的显示面板。
背景技术
随着显示器技术不断进步，所有的装置均朝着体积小、厚度薄、重量轻等趋势发展，因此目前市面上主流的显示器装置已由以往的阴极射线管发展成薄型化显示设备，如液晶显示设备及有机发光二极管装置等。特别是，薄型化显示设备可应用的领域相当多，例如日常生活中使用的手表、手机、笔记本电脑、摄影机、照相机、音乐播放器、行动导航装置、电视等显示设备。
以往常见的显示设备多具有方型结构；近年来，为了适应美观及设计的需求，显示设备已设计成具有多种不同外型，如圆形、三角形、菱形等异形结构。然而，无论是何种外型的显示设备，均需经过切割母基板的工艺。
在现有切割母基板的工艺中，多使用矩形切割及十字交错切割；然而，以此切割方式形成的显示设备基板往往产生凸缘及锯齿状等缺陷，而造成产品外观不理想或切割合格率降低等问题。
有鉴于此，目前亟需发展一种显示面板的切割方法及以此所制得的显示面板，以期能改善前述问题而提升切割合格率。
发明内容
本发明的主要目的在于提供一种显示面板及其切割方法，以能改善以往切割方法所导致的凸缘及锯齿状缺陷等问题。
为了达成上述目的，本发明的显示面板的切割方法，包括下列步骤：提供一第一母基板及一第二母基板，且第一母基板与第二母基板相对设置；以及分别切割第一母基板及第二母基板以分别得到一第一基板及一第二基板，其中在第一母基板上切割出一第一侧边并以一第一曲率半径切割出弧状的一转折边缘，及切割出一第一边缘，其中转折边缘位于第一侧边与第一边缘之间且与第一边缘及第一侧边连接，且在转折边缘处第二基板突出于转折边缘；其中在第二母基板上切割出与第一边缘部分重叠的一第二边缘；其中，第一侧边的延伸线与第二边缘形成一交点，且交点与转折边缘间的最小距离介于0.1mm至2.1mm之间。
经由前述步骤，则可获得本发明的显示面板，包括：一第一基板，具有至少一第一侧边、一第一边缘及连接第一侧边与第一边缘的一转折边缘，其中转折边缘呈现弧状；以及一第二基板，与第一基板相对设置，具有至少一第二边缘并与该第一边缘部分重叠，其中在第一基板的转折边缘处，第二基板突出于转折边缘；其中，第一侧边的延伸线与第二边缘形成一交点，且交点与转折边缘间的最小距离介于0.1mm至2.1mm之间。
此外，经由前述步骤，则可获得本发明的另一显示面板，包括：一第一基板，具有至少一第一侧边、一第一边缘及连接第一侧边与第一边缘的一转折边缘，其中转折边缘呈现弧状；以及一第二基板，与第一基板相对设置，具有至少一第二边缘并与该第一边缘部分重叠，其中在第一基板的转折边缘处，第二基板突出于转折边缘；其中，转折边缘的曲率半径不同于第一边缘的曲率半径。
在本发明的部分实施方面中，显示面板可同时具有前述交点与转折边缘间的最小距离介于0.1mm至2.1mm之间与转折边缘的曲率半径不同于第一边缘的曲率半径的特征。
在本发明的显示面板及其切割方法中，第一侧边的延伸线与第二边缘所形成的交点与转折边缘间的最小距离可介于0.1mm至2.1mm之间；优选介于0.1mm至1.3mm之间；且更佳介于0.1mm至0.3mm之间。
此外，在本发明的显示面板的切割方法中，还可以一第二曲率半径切割第二母基板以形成弧状的另一转折边缘。在此，切割第一母基板的第一曲率半径、切割第二母基板的第二曲率半径、及弧状的转折边缘的曲率半径可分别介于2.5mm至10mm之间；优选分别介于3mm至9mm之间；且最佳分别介于3mm至5mm之间。其中，第一曲率半径及第二曲率半径可相同或不同。
再者，在本发明的显示面板及其切割方法中，所得到的第一基板的第一侧边其延伸线与第二基板的第二边缘的夹角可介于30°至170°之间。
附图说明
图1为本发明一优选实施例的显示面板的切割前的剖面示意图。
图2为本发明一优选实施例的显示面板的切割后的示意图。
图3为本发明一优选实施例的显示面板的局部放大图。
图4至图9为本发明其他优选实施例的显示面板的示意图。
【符号说明】
具体实施方式
以下通过特定的具体实施例说明本发明的实施方式，本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其他优点与功效。本发明也可通过其他不同的具体实施例加以施行或应用，本说明书中的各项细节也可针对不同观点与应用，在不悖离本发明的精神下进行各种修饰与变更。
图1为本发明一优选实施例的显示面板的切割前的剖面示意图。在本实施例中，首先，提供一第一母基板11’及一第二母基板12’，并以一框胶13将且第一母基板11’及一第二母基板12’对组，以使第一母基板11’与第二母基板12’相对设置。在此，第一母基板11’与第二母基板12’上可分别形成有本技术领域已知的元件。举例而言，若本实施例的显示面板为一液晶显示面板时，第一母基板11’与第二母基板12’其中一个可为一上方可设置有薄膜晶体管单元而另一个上方可设置彩色滤光单元及黑色矩阵；或者第一母基板11’与第二母基板12’其中一个可为一上方设置有薄膜晶体管单元及彩色滤光单元的阵列上彩色滤光膜(COA)基板而另一个可为一形成有黑色矩阵的基板；此时，第一母基板11’、第二母基板12’及框胶13所定义的空间中更可填充有液晶分子。若本实施例的显示面板为一有机发光二极管显示面板，则第一母基板11’与第二母基板12’其中一个上方可更设置有有机发光单元。在此，无论是液晶显示面板或有机发光二极管显示面板，均可具有本技术领域常见的用于液晶显示设备或有机发光二极管装置的结构，故在此不再赘述。
接着，沿图1虚线所示的切割线分别切割第一母基板11’及第二母基板12’以分别得到一第一基板11及一第二基板12，如图2所示，其是本实施例显示面板的切割后的示意图。
如图1及图2所示，当切割第一母基板11’以得到第一基板11时，是以起点S1开始依箭号所指方向以一刀方式切割回起点S1。首先，在起点S1开始，以一曲率半径切割出第一边缘113；而后，在转折处11a以第一曲率半径切割出弧状的转折边缘112a(如图2左侧转折处11a所示)形成一倒圆角，再切割出直线的第一侧边111并再以第一曲率半径或其他曲率半径在转折处11b切割出弧状的转折边缘112b(如图2右侧转折处11b所示)形成另一倒圆角；最后，再以与最初形成第一边缘113相同的曲率半径进行切割，而回到点S1。在本实施例中，转折边缘112a与第一侧边111的一端相连，而转折边缘112b则与第一侧边111的另一端相连。在本实施例中，在第一侧边111的两端分别各形成一弧状的转折边缘112a，112b或倒圆角。在此，切割形成第一边缘113的曲率半径与形成弧状的转折边缘112a，112b的第一曲率半径不同；且优选切割形成第一边缘113的曲率半径小于形成弧状的转折边缘112a，112b的第一曲率半径。
此外，当切割第二母基板12’以得到第二基板12时，也可以选择与切割第一母基板11’相同的起点S1并依箭号所指方向以一刀方式进行切割。其中，是以一第二半径切割第二母基板12’以在转折处12a，12b形成一转折边缘122a，122b或倒圆角；且是以与形成第一基板11的第一边缘113的相同曲率半径切割第二母基板12’以形成一第二边缘122，且使第二边缘122与第一边缘113部分重叠。在此，在第一基板11的转折边缘112a，112b处，第二基板12突出于转折边缘112a，112b。
在本实施例中，形成第一基板11的弧状转折边缘112a，112b的第一曲率半径与形成第二基板12的转折边缘122a，122b的第二曲率半径可为相同或不同，且第一曲率半径与第二曲率半径可分别介于2.5mm至10mm之间，优选分别介于3mm至9mm之间，且最佳分别介于3mm至5mm之间。因此，在所得的显示面板中，第一基板11的弧状的转折边缘112a，112b的曲率半径与第二基板12的弧状的转折边缘122a，122b的曲率半径也可相同或不同，且第一基板11的弧状的转折边缘112a，112b及第二基板12的弧状的转折边缘122a，122b的曲率半径可分别介于2.5mm至10mm之间，优选分别介于3mm至9mm之间，且最佳分别介于3mm至5mm之间。
在本实施例中，切割第一母基板11’及第二母基板12’的起点S1相同；然而，在本发明的其他实施例中，切割第一母基板11’及第二母基板12’的起点S1可不相同，或者切割第一母基板11’及第二母基板12’的起点S1可位于显示面板其他位置，只要在切割第一母基板11’及第二母基板12’的过程中转折处11a，11b，12a，12b以第一曲率半径及第二曲率半径进行切割即可。
在传统的矩形切割应用在异型的切割，十字交错切割位置附近容易产生凸缘及锯齿状缺陷等问题。然而，在本实施例中，在基板切割的转折处以第一曲率半径及第二曲率半径进行异形弧状切割(R角或倒圆角切割)，可减少凸缘及锯齿状异常等问题，进而增加切割合格率，并优化切割质量。
在本发明中，所谓的「转折处」是指两相邻侧边间的夹角介于30°至170°之间。经由前述步骤后，则可得到本实施例的显示面板。如图2及图3所示，其中图3为图2的转折处11a区域放大图，本实施例的显示面板包括：一第一基板11，具有至少一第一侧边111、一第一边缘113及连接第一侧边111与第一边缘113的一转折边缘112a，其中转折边缘112a呈现弧状；以及一第二基板12，与第一基板11相对设置，具有至少一第二边缘122并与该第一边缘113部分重叠，其中在第一基板11的转折边缘112a处，第二基板12突出于转折边缘112a；其中，第一侧边111的延伸线(如图2虚线所示)与第二边缘122形成一交点P，且该交点P与转折边缘112a间的最小距离D介于0.1mm至2.1mm之间(优选介于0.1mm至1.3mm之间，且更佳介于0.1mm至0.3mm之间)。此外，转折边缘112a的曲率半径不同于第一边缘113的曲率半径。再者，在本实施例的显示面板中，第一侧边111的延伸线与第二基板12的第二边缘122的夹角θ可介于30°至170°之间。
在本实施例中，如图3所示，以第一基板11的转折处11a为例，弧状的转折边缘112a可对应出一密切圆112，该密切圆112的半径r即为形成弧状的转折边缘112a的曲率半径。同样的，在第一基板11的另一转折处11b及第二基板的转折处12a，12b也可对应出另一密切圆，其半径即为形成弧状转折边缘的曲率半径。
在本实施例中，形成第一基板11的转折边缘112a，112b的第一曲率半径与形成第二基板12的转折边缘122a，122b的第二曲率半径均为3mm，故所得的第一基板11的倒圆角及第二基板12的倒圆角的曲率半径均为3mm；而第一侧边111的延伸线与第二边缘122形成的交点P与转折边缘112a间的最小距离D为0.1～0.3mm；且第一侧边111的延伸线与第二基板12的第二边缘122的夹角θ为130°至170°。此外，在第二基板12上更形成有一端子部15。
至于形成第一边缘113及第二边缘122的曲率半径并无特殊限制，视所欲形成的显示面板形状而定。
在本发明中，除了形成如图2所示的型态的显示面板外，更可形成如图3包括两个端子部15的显示面板、及如图4至图9具有不同外型的显示面板，只要在转折处形成如前述的弧状边缘或倒圆角，即可达到本发明的减少凸缘及锯齿状异常等问题，进而增加切割合格率，并优化切割质量等目的。
此外，本发明前述实施例所制得的显示面板，可应用于本技术领域已知的任何需要显示屏幕的电子装置上，如显示器、手机、笔记本电脑、摄影机、照相机、音乐播放器、行动导航装置、电视、手表等。
上述实施例仅是为了方便说明而举例而已，本发明所主张的权利范围自应以权利要求所述为准，而非仅限于上述实施例。

Claims (6)

1.一种显示面板，其特征在于，包括：
一第一基板，具有至少一第一侧边、一第一边缘及连接该第一侧边与该第一边缘的一第一转折边缘，其中该第一转折边缘呈现弧状；以及
一第二基板，与该第一基板相对设置，具有至少一第二边缘并与该第一边缘部分重叠，其中在该第一转折边缘处该第二基板突出于该第一转折边缘；
其中，该第一转折边缘的曲率半径不同于该第一边缘的曲率半径，
其中该第一侧边的延伸线与该第二边缘形成一交点，且该交点与该第一转折边缘间的最小距离介于0.1mm至2.1mm之间。
2.根据权利要求1所述的显示面板，其中该第一转折边缘的曲率半径介于2.5mm至10mm之间。
3.一种显示面板的切割方法，其特征在于，包括下列步骤：
提供一第一母基板及一第二母基板，且该第一母基板与该第二母基板相对设置；以及
分别切割该第一母基板及该第二母基板以分别得到一第一基板及一第二基板；
其中在该第一母基板上是以一刀方式切割出弧状的一第一边缘、具有一第一曲率半径的弧状的一第一转折边缘、以及一第一侧边，其中该第一转折边缘位于该第一侧边与该第一边缘之间且与该第一边缘及该第一侧边连接，且在该第一转折边缘处该第二基板突出于该第一转折边缘；
其中在该第二母基板上是以一刀方式切割出弧状的一第二边缘、弧状的一第二转折边缘、以及一第二侧边，其中该第二转折边缘位于该第二侧边与该第二边缘之间且与该第二边缘及该第二侧边连接，其中该第二边缘与该第一边缘部分重叠；
其中，该第一侧边的延伸线与该第二边缘形成一交点，且该交点与该第一转折边缘间的最小距离介于0.1mm至2.1mm之间。
4.根据权利要求3所述的切割方法，其中该交点与该第一转折边缘间的最小距离介于0.1mm至1.3mm之间。
5.根据权利要求4所述的切割方法，其中该交点与该第一转折边缘间的最小距离介于0.1mm至0.3mm之间。
6.根据权利要求3所述的切割方法，其中该第一曲率半径介于2.5mm至10mm之间。
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