TW202323944A - 光學膠膜片結構、拼接式顯示模組以及顯示模組的製造方法 - Google Patents

光學膠膜片結構、拼接式顯示模組以及顯示模組的製造方法 Download PDF

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TW202323944A
TW202323944A TW110145774A TW110145774A TW202323944A TW 202323944 A TW202323944 A TW 202323944A TW 110145774 A TW110145774 A TW 110145774A TW 110145774 A TW110145774 A TW 110145774A TW 202323944 A TW202323944 A TW 202323944A
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adhesive layer
release film
display module
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林宜欣
陳文龍
吳昱瑾
廖唯倫
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友達光電股份有限公司
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Abstract

提供一種具有對位功能的光學膠膜片結構，光學膠膜片結構包括光學膠層以及離型膜。離型膜配置於光學膠層上。離型膜在遠離光學膠層的第一膜面上具有多個標記，這些標記相對於第一膜面凹入離型膜，且不貫穿離型膜。一種拼接式顯示模組以及一種顯示模組的製造方法亦被提出。

Description

光學膠膜片結構、拼接式顯示模組以及顯示模組的製造方法
本發明是有關於一種光學膠膜片結構、拼接式顯示模組以及顯示模組的製造方法。
隨著顯示科技的發達，人們對顯示設備的需求日益增加，應用範圍也更加多元。例如，在大型展場或百貨賣場，越來越多大尺寸顯示設備被設置以顯示公共訊息或提供廣告。為了降低這些大型顯示設備的設置成本及維護成本，採用多片顯示面板拼接而成的拼接式顯示設備已成為這類大型顯示看板常見的架設方式之一。然而，拼接多片顯示面板會有累積對位公差的問題。如何避免累積對位公差，甚至是能夠以較低的製造成本來避免累積公差，成為製造拼接式顯示設備亟需解決的問題。
本發明提供一種光學膠膜片結構、具有該光學膠膜片結構的拼接式顯示模組、以及顯示模組的製造方法。光學膠膜片結構具備對位標記，拼接式顯示模組內的多個顯示面板不會累積對位公差，顯示模組能夠以較低製造成本的方法來製造。
根據本發明一實施例，提供一種具有對位功能的光學膠膜片結構，包括光學膠層以及離型膜。離型膜配置於光學膠層上。離型膜在遠離光學膠層的第一膜面上具有多個標記，這些標記相對於第一膜面凹入離型膜，且不貫穿離型膜。
根據本發明另一實施例，提供一種拼接式顯示模組，包括上述的光學膠膜片結構以及多個顯示面板。這些顯示面板配置於光學膠層上。光學膠層配置於這些顯示面板以及離型膜之間，且這些顯示面板分別對應這些標記配置。
根據本發明再一實施例，提供一種顯示模組的製造方法，包括配置光學膠膜片結構，其中光學膠膜片結構具備層疊設置的光學膠層以及離型膜；於離型膜遠離光學膠層的第一膜面上配置至少一標記，其中至少一標記相對於第一膜面凹入離型膜，且不貫穿離型膜；以及於光學膠層上配置至少一顯示面板，使得光學膠層配置於至少一顯示面板以及離型膜之間，且至少一顯示面板對應至少一標記配置。
基於上述，本發明實施例提供的光學膠膜片結構具備對位標記。拼接式顯示模組內的多個顯示面板利用上述對位標記進行對位，而不會累積對位公差。此外，藉由將對位標記設置於光學膠膜片結構，顯示模組能夠以較低的製造成本來製造。
為讓本發明的上述特徵和優點能更明顯易懂，下文特舉實施例，並配合所附圖式作詳細說明如下。
參照圖1A至圖1D，其繪示根據本發明一實施例的顯示模組的製造方法的示意圖。
參照圖1A，根據本實施例的顯示模組的製造方法包括配置光學膠膜片結構100。光學膠膜片結構100包括離型膜101以及光學膠層102。離型膜101配置於光學膠層102上。離型膜101在遠離光學膠層102的膜面101S上具有多個標記101M，這些標記101M相對於膜面101S凹入離型膜101，且不貫穿離型膜101，以避免破壞光學膠層102，影響光學膠層102的光學特性。
參照圖1B，根據本實施例的顯示模組的製造方法還包括於光學膠層102上配置多個顯示面板201，以形成拼接式顯示模組200。拼接式顯示模組200包括光學膠膜片結構100以及多個顯示面板201。這些顯示面板201配置於光學膠層102上。光學膠層102配置於這些顯示面板201以及離型膜101之間，且這些顯示面板201分別對應這些標記101M配置。
在將顯示面板201配置於光學膠層102上的製程工序中，標記101M被用做為對位記號，每一個顯示面板201根據對應的標記101M來定位。相較於習知技藝中未設置對位記號的拼接式顯示模組，本實施例提供的拼接式顯示模組200中的每一個顯示面板201是分別以對應的標記101M來定位，而得以避免累積對位公差。
應當說明的是，雖然圖1A至圖1D是以橫截面示意圖來繪示，在實際的應用中，多個標記101M是以二維陣列形式設置於膜面101S上，且多個顯示面板201是以對應的二維陣列形式配置於光學膠層102上。
具體而言，本實施例中的光學膠層102可以例如是光學透明膠（Optical Clear Adhesive, OCA），在習知技藝中，光學透明膠被用以黏接顯示模組中的不同層結構，並有效降低環境光反射。本發明實施例利用在離型膜101上設置標記101M的方式，使得尚未移除離型膜101的光學膠膜片結構100得以在後續拼接多個顯示面板201的製程工序中提供對位的功能，增加了光學膠膜片結構100在製程工序中的功能性。再者，本發明實施例利用光學膠膜片結構100中既有的離型膜101來設置標記101M，而不需要增加額外的膜層來設置標記101M，不需要增加額外的成本，提升了製程精確度。
再參照圖1B，每一顯示面板201包括電路基板202、多個發光元件203以及封裝膠層204。發光元件203為發光二極體，且包括紅色發光二極體203R、綠色發光二極體203G以及藍色發光二極體203B。發光元件203以陣列形式配置於電路基板202以及光學膠層102之間。封裝膠層204配置以覆蓋發光元件203。每一顯示面板201的封裝膠層204被黏合至光學膠層102的膜面102B，且每一顯示面板201的發光面201L與光學膠層102的膜面102B共面，使得拼接式顯示模組200中的每一顯示面板201的發光面201L彼此共面，提升拼接式顯示模組200在輝度及色度上的均勻性。
接下來參照圖1C至圖1D，根據本實施例的顯示模組的製造方法還包括自光學膠層102的膜面102S上移除離型膜101，並將光學膠層102的膜面102S黏合至透光基板301，以形成拼接式顯示模組300。拼接式顯示模組300包括透光基板301、多個顯示面板201、以及設置於透光基板301與多個顯示面板201之間且用以黏合透光基板301與多個顯示面板201的光學膠層102。透光基板301可以例如是玻璃基板、藍寶石基板、或包括有聚乙烯對苯二甲酸酯(polyethylene terephthalate，PET)以及聚酰亞胺(polyimide，PI)等材料的可撓性基板。
參照圖2，其繪示圖1A至圖1C所示的離型膜的局部橫截面圖。在本實施例中，顯示模組的製造方法還包括以雷射照射離型膜101的膜面101S，以設置多個標記101M。標記101M相對於膜面101S凹入離型膜101，且不貫穿離型膜101。標記101M可以是任意圖案，且在越靠近膜面101S處的寬度越大，如圖2所示，寬度A1大於寬度B1。此外，標記101M還可以包括因雷射的熱能而形成的熱影響區，熱影響區為預設結構，其遭熱能影響而可能存在有表面結構遭到破壞，或是膜層內部產生崩解、改質等狀況，熱影響區的寬度C1及D1兩者可大致相同。
為了充分說明本發明的各種實施態樣，將在下文描述本發明的其他實施例。在此必須說明的是，下述實施例沿用前述實施例的元件標號與部分內容，其中採用相同的標號來表示相同或近似的元件，並且省略了相同技術內容的說明。關於省略部分的說明可參考前述實施例，下述實施例不再重複贅述。
參照圖3，其繪示根據本發明一實施例的拼接式顯示模組的橫截面示意圖。拼接式顯示模組500包括基底層401、光學膠層102以及多個顯示面板501。基底層401可以是圖1B中的離型膜101或是圖1D中的透光基板301。顯示面板501包括電路基板502、多個發光元件503（為了理解的方便，圖3僅繪示一個發光元件503）以及封裝膠層504。
電路基板502包括載板502B以及電路層502E。載板502B具可撓性，可以包括PET或PI等材料。發光元件503配置於電路基板502朝向光學膠層102的一面。顯示面板501利用薄膜覆晶封裝（Chip On Film；COF）技術，將顯示面板501的驅動晶片整合在可撓性電路板506上。通孔505貫穿電路基板502，通孔505內設置有導電金屬，發光元件503藉由通孔505內的導電金屬電性連接可撓性電路板506。
綜上所述，本發明實施例提供的光學膠膜片結構具備對位標記。拼接式顯示模組內的多個顯示面板利用上述對位標記進行對位，而不會累積對位公差。此外，藉由將對位標記設置於光學膠膜片結構既有的離型膜上，顯示模組能夠以較低的製造成本來製造。
100:光學膠膜片結構 101:離型膜 101M:標記 101S、102B、102S:膜面 102:光學膠層 200、300、500:拼接式顯示模組 201、501:顯示面板 201L:發光面 202、502:電路基板 203、503:發光元件 203R、203G、203B:發光二極體 204、504:封裝膠層 301:透光基板 401:基底層 502B:載板 502E:電路層 505:通孔 506:可撓性電路板 A1、B1、C1、D1:寬度
圖1A至圖1D是根據本發明一實施例的顯示模組的製造方法的示意圖。 圖2是圖1A至圖1C所示的離型膜的局部橫截面圖。 圖3是根據本發明一實施例的拼接式顯示模組的橫截面示意圖。
101:離型膜
101M:標記
101S、102B:膜面
102:光學膠層
200:拼接式顯示模組
201:顯示面板
201L:發光面
202:電路基板
203:發光元件
203R、203G、203B:發光二極體
204:封裝膠層

Claims (10)

  1. 一種光學膠膜片結構，其具有對位功能且包括： 一光學膠層；以及 一離型膜，配置於該光學膠層上； 其中該離型膜在遠離該光學膠層的一第一膜面上具有多個標記，該些標記相對於該第一膜面凹入該離型膜，且不貫穿該離型膜。
  2. 一種拼接式顯示模組，包括： 如請求項1所述的光學膠膜片結構；以及 多個顯示面板，配置於該光學膠層上， 其中該光學膠層配置於該些顯示面板以及該離型膜之間，且該些顯示面板分別對應該些標記配置。
  3. 如請求項2所述的拼接式顯示模組，其中每一顯示面板包括一電路基板以及多個發光元件，且該些發光元件配置於該電路基板以及該光學膠層之間。
  4. 如請求項3所述的拼接式顯示模組，其中每一顯示面板還包括一封裝膠層，配置以覆蓋該些發光元件，且該封裝膠層配置於該些發光元件以及該光學膠層之間。
  5. 如請求項2所述的拼接式顯示模組，其中每一顯示面板的一發光面與該光學膠層遠離該離型膜的一第二膜面共面。
  6. 一種顯示模組的製造方法，包括： 配置一光學膠膜片結構，其中該光學膠膜片結構具備層疊設置的一光學膠層以及一離型膜； 於該離型膜遠離該光學膠層的一第一膜面上配置至少一標記，其中該至少一標記相對於該第一膜面凹入該離型膜，且不貫穿該離型膜；以及 於該光學膠層上配置至少一顯示面板，使得該光學膠層配置於該至少一顯示面板以及該離型膜之間，且該至少一顯示面板對應該至少一標記配置。
  7. 如請求項6所述的顯示模組的製造方法，還包括： 以該至少一標記做為對位記號，將該至少一顯示面板配置於該光學膠層上，使得該至少一顯示面板對應該至少一標記。
  8. 如請求項6所述的顯示模組的製造方法，還包括： 以雷射照射該離型膜的該第一膜面，以設置該至少一標記。
  9. 如請求項6所述的顯示模組的製造方法，還包括： 於一電路基板上配置至少一發光元件以及覆蓋該至少一發光元件的一封裝膠層，以形成該至少一顯示面板；以及 將該封裝膠層黏合至該光學膠層遠離該離型膜的一第二膜面上。
  10. 如請求項9所述的顯示模組的製造方法，還包括： 自該光學膠層上移除該離型膜；以及 將該光學膠層黏合至一透光基板。
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