CN114709193A - 光学胶膜片结构、拼接式显示模块及显示模块的制造方法 - Google Patents

光学胶膜片结构、拼接式显示模块及显示模块的制造方法 Download PDF

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CN114709193A
CN114709193A CN202210347775.0A CN202210347775A CN114709193A CN 114709193 A CN114709193 A CN 114709193A CN 202210347775 A CN202210347775 A CN 202210347775A CN 114709193 A CN114709193 A CN 114709193A
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optical adhesive
adhesive layer
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林宜欣
陈文龙
吴昱瑾
廖唯伦
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AU Optronics Corp
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Abstract

一种光学胶膜片结构、拼接式显示模块及显示模块的制造方法。提供一种具有对位功能的光学胶膜片结构，光学胶膜片结构包括光学胶层以及离型膜。离型膜配置于光学胶层上。离型膜在远离光学胶层的第一膜面上具有多个标记，这些标记相对于第一膜面凹入离型膜，且不贯穿离型膜。

Description

光学胶膜片结构、拼接式显示模块及显示模块的制造方法
技术领域
本发明涉及一种光学胶膜片结构、拼接式显示模块以及显示模块的制造方法。
背景技术
随着显示科技的发达，人们对显示设备的需求日益增加，应用范围也更加多元。例如，在大型展场或百货卖场，越来越多大尺寸显示设备被设置以显示公共信息或提供广告。为了降低这些大型显示设备的设置成本及维护成本，采用多片显示面板拼接而成的拼接式显示设备已成为这类大型显示看板常见的架设方式之一。然而，拼接多片显示面板会有累积对位公差的问题。如何避免累积对位公差，甚至是能够以较低的制造成本来避免累积公差，成为制造拼接式显示设备亟需解决的问题。
发明内容
本发明提供一种光学胶膜片结构、具有该光学胶膜片结构的拼接式显示模块、以及显示模块的制造方法。光学胶膜片结构具备对位标记，拼接式显示模块内的多个显示面板不会累积对位公差，显示模块能够以较低制造成本的方法来制造。
根据本发明一实施例，提供一种具有对位功能的光学胶膜片结构，包括光学胶层以及离型膜。离型膜配置于光学胶层上。离型膜在远离光学胶层的第一膜面上具有多个标记，这些标记相对于第一膜面凹入离型膜，且不贯穿离型膜。
根据本发明另一实施例，提供一种拼接式显示模块，包括上述的光学胶膜片结构以及多个显示面板。这些显示面板配置于光学胶层上。光学胶层配置于这些显示面板以及离型膜之间，且这些显示面板分别对应这些标记配置。
根据本发明再一实施例，提供一种显示模块的制造方法，包括配置光学胶膜片结构，其中光学胶膜片结构具备层叠设置的光学胶层以及离型膜；于离型膜远离光学胶层的第一膜面上配置至少一标记，其中至少一标记相对于第一膜面凹入离型膜，且不贯穿离型膜；以及于光学胶层上配置至少一显示面板，使得光学胶层配置于至少一显示面板以及离型膜之间，且至少一显示面板对应至少一标记配置。
基于上述，本发明实施例提供的光学胶膜片结构具备对位标记。拼接式显示模块内的多个显示面板利用上述对位标记进行对位，而不会累积对位公差。此外，通过将对位标记设置于光学胶膜片结构，显示模块能够以较低的制造成本来制造。
为让本发明的上述特征和优点能更明显易懂，下文特举实施例，并配合说明书附图作详细说明如下。
附图说明
图1A至图1D是根据本发明一实施例的显示模块的制造方法的示意图。
图2是图1A至图1C所示的离型膜的局部横截面图。
图3是根据本发明一实施例的拼接式显示模块的横截面示意图。
附图标记说明：
100：光学胶膜片结构
101：离型膜
101M：标记
101S、102B、102S：膜面
102：光学胶层
200、300、500：拼接式显示模块
201、501：显示面板
201L：发光面
202、502：电路基板
203、503：发光元件
203R、203G、203B：发光二极管
204、504：封装胶层
301：透光基板
401：基底层
502B：载板
502E：电路层
505：通孔
506：柔性电路板
A1、B1、C1、D1：宽度
具体实施方式
参照图1A至图1D，其示出根据本发明一实施例的显示模块的制造方法的示意图。
参照图1A，根据本实施例的显示模块的制造方法包括配置光学胶膜片结构100。光学胶膜片结构100包括离型膜101以及光学胶层102。离型膜101配置于光学胶层102上。离型膜101在远离光学胶层102的膜面101S上具有多个标记101M，这些标记101M相对于膜面101S凹入离型膜101，且不贯穿离型膜101，以避免破坏光学胶层102，影响光学胶层102的光学特性。
参照图1B，根据本实施例的显示模块的制造方法还包括于光学胶层102上配置多个显示面板201，以形成拼接式显示模块200。拼接式显示模块200包括光学胶膜片结构100以及多个显示面板201。这些显示面板201配置于光学胶层102上。光学胶层102配置于这些显示面板201以及离型膜101之间，且这些显示面板201分别对应这些标记101M配置。
在将显示面板201配置于光学胶层102上的工艺工序中，标记101M被用做为对位记号，每一个显示面板201根据对应的标记101M来定位。相较于现有技艺中未设置对位记号的拼接式显示模块，本实施例提供的拼接式显示模块200中的每一个显示面板201是分别以对应的标记101M来定位，而得以避免累积对位公差。
应当说明的是，虽然图1A至图1D是以横截面示意图来示出，在实际的应用中，多个标记101M是以二维阵列形式设置于膜面101S上，且多个显示面板201是以对应的二维阵列形式配置于光学胶层102上。
具体而言，本实施例中的光学胶层102可以例如是光学透明胶(Optical ClearAdhesive,OCA)，在现有技艺中，光学透明胶被用以粘接显示模块中的不同层结构，并有效降低环境光反射。本发明实施例利用在离型膜101上设置标记101M的方式，使得尚未移除离型膜101的光学胶膜片结构100得以在后续拼接多个显示面板201的工艺工序中提供对位的功能，增加了光学胶膜片结构100在工艺工序中的功能性。再者，本发明实施例利用光学胶膜片结构100中既有的离型膜101来设置标记101M，而不需要增加额外的膜层来设置标记101M，不需要增加额外的成本，提升了工艺精确度。
再参照图1B，每一显示面板201包括电路基板202、多个发光元件203以及封装胶层204。发光元件203为发光二极管，且包括红色发光二极管203R、绿色发光二极管203G以及蓝色发光二极管203B。发光元件203以阵列形式配置于电路基板202以及光学胶层102之间。封装胶层204配置以覆盖发光元件203。每一显示面板201的封装胶层204被粘合至光学胶层102的膜面102B，且每一显示面板201的发光面201L与光学胶层102的膜面102B共面，使得拼接式显示模块200中的每一显示面板201的发光面201L彼此共面，提升拼接式显示模块200在辉度及色度上的均匀性。
接下来参照图1C至图1D，根据本实施例的显示模块的制造方法还包括自光学胶层102的膜面102S上移除离型膜101，并将光学胶层102的膜面102S黏合至透光基板301，以形成拼接式显示模块300。拼接式显示模块300包括透光基板301、多个显示面板201、以及设置于透光基板301与多个显示面板201之间且用以粘合透光基板301与多个显示面板201的光学胶层102。透光基板301可以例如是玻璃基板、蓝宝石基板、或包括有聚乙烯对苯二甲酸酯(polyethylene terephthalate，PET)以及聚酰亚胺(polyimide，PI)等材料的柔性基板。
参照图2，其示出图1A至图1C所示的离型膜的局部横截面图。在本实施例中，显示模块的制造方法还包括以激光照射离型膜101的膜面101S，以设置多个标记101M。标记101M相对于膜面101S凹入离型膜101，且不贯穿离型膜101。标记101M可以是任意图案，且在越靠近膜面101S处的宽度越大，如图2所示，宽度A1大于宽度B1。此外，标记101M还可以包括因激光的热能而形成的热影响区，热影响区为预设结构，其遭热能影响而可能存在有表面结构遭到破坏，或是膜层内部产生崩解、改质等状况，热影响区的宽度C1及D1两者可大致相同。
为了充分说明本发明的各种实施方式，将在下文描述本发明的其他实施例。在此必须说明的是，下述实施例沿用前述实施例的元件标号与部分内容，其中采用相同的标号来表示相同或近似的元件，并且省略了相同技术内容的说明。关于省略部分的说明可参考前述实施例，下述实施例不再重复赘述。
参照图3，其示出根据本发明一实施例的拼接式显示模块的横截面示意图。拼接式显示模块500包括基底层401、光学胶层102以及多个显示面板501。基底层401可以是图1B中的离型膜101或是图1D中的透光基板301。显示面板501包括电路基板502、多个发光元件503(为了理解的方便，图3仅示出一个发光元件503)以及封装胶层504。
电路基板502包括载板502B以及电路层502E。载板502B具柔性，可以包括PET或PI等材料。发光元件503配置于电路基板502朝向光学胶层102的一面。显示面板501利用薄膜覆晶封装(Chip On Film；COF)技术，将显示面板501的驱动芯片整合在柔性电路板506上。通孔505贯穿电路基板502，通孔505内设置有导电金属，发光元件503通过通孔505内的导电金属电性连接柔性电路板506。
综上所述，本发明实施例提供的光学胶膜片结构具备对位标记。拼接式显示模块内的多个显示面板利用上述对位标记进行对位，而不会累积对位公差。此外，通过将对位标记设置于光学胶膜片结构既有的离型膜上，显示模块能够以较低的制造成本来制造。

Claims (10)

1.一种光学胶膜片结构，其具有对位功能且包括：
一光学胶层；以及
一离型膜，配置于该光学胶层上；
其中该离型膜在远离该光学胶层的一第一膜面上具有多个标记，该些标记相对于该第一膜面凹入该离型膜，且不贯穿该离型膜。
2.一种拼接式显示模块，包括：
如权利要求1所述的光学胶膜片结构；以及
多个显示面板，配置于该光学胶层上，
其中该光学胶层配置于该些显示面板以及该离型膜之间，且该些显示面板分别对应该些标记配置。
3.如权利要求2所述的拼接式显示模块，其中每一显示面板包括一电路基板以及多个发光元件，且该些发光元件配置于该电路基板以及该光学胶层之间。
4.如权利要求3所述的拼接式显示模块，其中每一显示面板还包括一封装胶层，配置以覆盖该些发光元件，且该封装胶层配置于该些发光元件以及该光学胶层之间。
5.如权利要求2所述的拼接式显示模块，其中每一显示面板的一发光面与该光学胶层远离该离型膜的一第二膜面共面。
6.一种显示模块的制造方法，包括：
配置一光学胶膜片结构，其中该光学胶膜片结构具备层叠设置的一光学胶层以及一离型膜；
于该离型膜远离该光学胶层的一第一膜面上配置至少一标记，其中该至少一标记相对于该第一膜面凹入该离型膜，且不贯穿该离型膜；以及
于该光学胶层上配置至少一显示面板，使得该光学胶层配置于该至少一显示面板以及该离型膜之间，且该至少一显示面板对应该至少一标记配置。
7.如权利要求6所述的显示模块的制造方法，还包括：
以该至少一标记做为对位记号，将该至少一显示面板配置于该光学胶层上，使得该至少一显示面板对应该至少一标记。
8.如权利要求6所述的显示模块的制造方法，还包括：
以激光照射该离型膜的该第一膜面，以设置该至少一标记。
9.如权利要求6所述的显示模块的制造方法，还包括：
于一电路基板上配置至少一发光元件以及覆盖该至少一发光元件的一封装胶层，以形成该至少一显示面板；以及
将该封装胶层粘合至该光学胶层远离该离型膜的一第二膜面上。
10.如权利要求9所述的显示模块的制造方法，还包括：
自该光学胶层上移除该离型膜；以及
将该光学胶层粘合至一透光基板。
CN202210347775.0A 2021-12-08 2022-04-01 光学胶膜片结构、拼接式显示模块及显示模块的制造方法 Pending CN114709193A (zh)

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