TWI751428B - 包含抗反射塗層的透明末端執行器的處理室 - Google Patents
包含抗反射塗層的透明末端執行器的處理室 Download PDFInfo
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Abstract
本發明是關於一種包含塗布有抗反射材料的透明末端執
行器的處理室。例如末端執行器等的工件支撐件在其至少一個表面上塗布有抗反射材料。抗反射材料改善了光透過工件支撐件的透射。工件支撐件可設置在腔室中,加熱元件設置在工件支撐件下方,使得工件支撐件設置在加熱元件與工件之間。在某些實施例中,加熱元件可以是LED或鎢鹵素燈。抗反射材料允許從加熱元件到工件的更高效的能量傳遞。這可使得工件上的溫度均勻性改善。抗反射材料可以是氟化鎂或多層光學塗層。作為另一選擇,加熱元件可設置在工件上方。在此種情況下,自工件支撐件減少的反射可使工件設置在工件支撐件上方的部分上的溫度升高最小化。
Description
本公開的實施例涉及利用工件支撐件來保持工件的系統,且更具體來說,是關於包含塗布有抗反射材料的透明末端執行器(transparent end effector)的處理室。
半導體裝置的製作涉及多個離散且複雜的製程。在某些製程中,加熱工件可能是有利的,以使所述製程獲得所需的結果。加熱工件的一種方法是透過使用加熱燈。舉例來說,鎢鹵素燈泡可用於朝工件發射能量。在其它實施例中,LED燈可提供熱能。
來自鎢鹵素燈泡的功率在介於約400nm到2600nm範圍內的波長下發射,峰值在約1000nm處。在600nm與1800nm之間的波長下,發射功率至少是最大發射功率的一半。對於其它加熱元件來說,能量的分佈可變化。
在某些實施例中,工件設置在工件支撐件上,並由設置在工件下方的加熱元件加熱。換句話說,工件支撐件設置在加熱
元件與工件之間。因此,工件支撐件可能會阻擋一些光到達工件。為了減輕此問題,末端執行器可由例如透明石英等透明材料構成。測試已顯示約88%的光能穿過由透明石英構成的工件支撐件。
然而,在升高的溫度(例如,500℃)下,工件支撐件可影響工件的局部溫度。舉例來說,工件的位於工件支撐件正上方的部分的溫度可比工件的其它部分低50℃。
因此,如果存在能夠支撐工件而不會不利地影響光能穿過到達工件的設備將是有利的。如果此種設備可用在現有的系統上將是有益的。
例如末端執行器等工件支撐件在其至少一個表面上塗布有抗反射材料。抗反射材料改善了光通過工件支撐件的透射。工件支撐件可設置在腔室中,加熱元件設置在工件支撐件下方,使得工件支撐件設置在加熱元件與工件之間。在某些實施例中,加熱元件可以是LED或鎢鹵素燈。抗反射材料允許從加熱元件到工件的更高效的能量傳遞。這可使得工件上的溫度均勻性改善。抗反射材料可以是氟化鎂或多層光學塗層。抗反射材料還可以是SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5、Nb2O5、LaTiO3及TiO2中的一種或多種。作為另一選擇,加熱元件可設置在工件上方。在此種情況下,自工件支撐件減少的反射可使工件設置在工件支撐件上方的部分上的溫度升高最小化。
根據一個實施例,公開一種處理室。所述處理室包括用於保持工件的工件支撐件,所述工件支撐件包括:靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;以及加熱元件,其中所述工件支撐件設置在所述加熱元件與所述工件之間。在某些實施例中,所述工件支撐件的所述頂面不接觸整個所述工件。在某些實施例中,所述工件支撐件在由所述加熱元件發射的波長下幾乎是透明的。在又一些實施例中,所述工件支撐件包含透明石英。在某些實施例中,所述加熱元件包括鎢鹵素燈泡或LED。在某些實施例中,所述抗反射材料設置在所述頂面及所述底面上。在其它實施例中,所述抗反射材料設置在所述底面上。在一些實施例中,所述抗反射材料選自由氟化鎂、SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5以及Nb2O5、LaTiO3及TiO2組成的群組。
根據另一實施例,公開一種處理室。所述處理室包括用於保持工件的工件支撐件,所述工件支撐件包括:靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;以及加熱元件,其中所述工件設置在所述加熱元件與所述工件支撐件之間。在某些實施例中,所述工件支撐件的所述頂面不接觸整個所述工件。在某些實施例中,加熱元件包括鎢鹵素燈泡或LED。在某些實施例中,所述抗反射材料設置在所述頂面及所述底面上。在其它實施例中,所述抗反射材料設置在所述頂面上。在一些實施例中,所述抗反射材料選自由氟化鎂、
SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5以及Nb2O5、LaTiO3及TiO2組成的群組。
根據另一實施例,公開一種處理室。所述處理室包括:加熱元件,發射由工件吸收的一個或多個波長的光;用於保持所述工件的工件支撐件,所述工件支撐件包括靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;其中在由所述加熱元件發射的所述一個或多個波長下,透過所述工件支撐件的透射率提高了至少5%。在某些實施例中,所述抗反射材料設置在所述頂面及所述底面上。在某些實施例中,所述工件支撐件的所述頂面不接觸整個所述工件。在某些實施例中,加熱元件包括鎢鹵素燈泡或LED。在某些實施例中,在由所述加熱元件發射的所述一個或多個波長下,透過所述工件支撐件的透射率提高了至少10%。在某些實施例中,所述工件支撐件包括末端執行器。
1:處理室
10:工件
20:工件支撐件
21、22:叉形件
23:手柄
24:頂面
25:底面
30:加熱元件
35:加熱模組
36:鎢鹵素燈泡
40:抗反射材料
500:線
510:線
為更好地理解本發明,參考附圖,所述附圖併入本文供參考且在附圖中:圖1是根據一個實施例,設置在處理室內的塗布有抗反射材料的工件支撐件的代表性側視圖。
圖2是工件支撐件的代表性俯視圖。
圖3示出加熱元件與工件支撐件之間的相互作用。
圖4是根據第二實施例,位於處理室內的工件支撐件的代表性側視圖。
圖5是曲線圖,其示出當使用抗反射塗層時石英工件支撐件的透射率的改善。
圖1示出可用於處理工件10的處理室1。在某些實施例中,處理室1專門用於加熱工件10。在其它實施例中,也可在處理室中執行另一半導體製程,例如植入。
工件10可由工件支撐件20支撐。此工件支撐件20可以是可移動的。舉例來說,工件支撐件20可用於將工件10從裝載鎖或其它埠傳送到其處理位置。在其它實施例中,工件支撐件20可以能夠垂直移動。在某些實施例中,工件支撐件20可以是固定的。工件支撐件20用於保持工件10。在一些實施例中,工件支撐件20不接觸或支撐整個工件10。舉例來說,工件支撐件20可以是沿著工件10的圓周等距間隔開的多個基座。在某些實施例中,工件支撐件20可以是末端執行器。如圖2所示,末端執行器可具有兩個叉形件21及22以及設置成Y構型的手柄23。手柄23及兩個叉形件21及22的長度及寬度可依據特定應用而變化。因此,工件支撐件20可接觸少於整個工件10。
在圖1所示的實施例中,一個或多個加熱元件30可設置在處理室1的底面上或接近所述底面。在一些實施例中,加熱元
件30設置在加熱模組35中,如圖2所示。加熱模組35可容納排列成一個或多個同心圓的多個鎢鹵素燈泡36。
在其它實施例中,加熱元件30可以是LED,例如LED陣列,所述LED陣列發射容易被工件10吸收的波長的光。因此,加熱元件30可發射被工件吸收的波長或波長範圍的光。加熱元件30的特定類型及構型不受本公開的限制。
在某些實施例中,由於處理室1的構型,工件支撐件可設置在加熱元件30與工件10之間。因此,工件10的設置在工件支撐件20正上方的部分可比工件10的其它部分接收更少的光。此外,由於工件支撐件20接觸少於整個工件10,因此工件10的某些部分被加熱元件30直接加熱,而工件10的其它部分被首先透過工件支撐件20的光加熱。
為對此進行補償,工件支撐件20可由例如透明石英等幾乎透明的材料構成。在本公開中,用語「幾乎透明」表示材料能夠透射由加熱元件30發射的頻率範圍中的至少80%的光。舉例來說,透明石英可透射大約88%到90%的被工件10吸收的頻率的光。換句話說,工件10的位於工件支撐件20正上方的部分可比工件10的其它部分少接收10%到12%的光。因此,工件10的此部分可處於比工件10的其餘部分更低的溫度下。在某些實施例中,此差異可以是50℃或大於50℃。
有利地,本公開的工件支撐件20塗布有抗反射材料40。此抗反射材料40可以是氟化鎂或另一合適的材料。其它合適的材
料包括但不限於SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5、Nb2O5、LaTiO3及TiO2等。抗反射材料40也可以是多層光學塗層。
儘管圖1示出設置在工件支撐件20的頂面及底面上的抗反射材料40,但其它實施例也是可能的。舉例來說,如下所述,抗反射材料40可僅設置在工件支撐件20的頂面上,或者可僅設置在工件支撐件20的底面上。
圖3示出加熱元件30與工件支撐件20之間的相互作用。從加熱元件30發射的光可在兩個介面處反射。在此圖中,工件可設置在工件支撐件20的頂面24的頂部上。首先,來自加熱元件30的一些光在真空環境與工件支撐件20的底面25之間的介面處被反射。其次,一些光在工件支撐件20的頂面24與工件之間的介面處也被反射。在這些表面中的一者或兩者上引入抗反射材料40將減少反射量,從而增加透射到工件10的光量。在某些實施例中,抗反射材料40僅設置在工件支撐件20的面向加熱元件30的一側上。在其他實施例中,抗反射材料40僅設置在工件支撐件20的背對加熱元件30的一側上。在某些實施例中,抗反射材料40設置在兩個表面上。在一些實施例中,抗反射材料40設置在整個這些表面上。在其他實施例中,抗反射材料40設置在這些表面的僅一部分上。
對抗反射材料40進行選擇以耐受處理室1內的操作條件。這些操作條件可包括超過250℃的溫度。在一些實施例中,這些操作條件可包括超過500℃的溫度。另外,對抗反射材料40
進行選擇以使其耐受從加熱元件30發射的光通量。對抗反射材料40的選擇也可取決於由加熱元件30發射的波長。
透過利用抗反射材料40塗布工件支撐件20的一個表面的至少一部分,增加了到達工件的位於工件支撐件20正上方的部分的光量。舉例來說,依據抗反射材料的類型以及被塗布的表面,光透過工件支撐件20的透射率可從88%到90%(未經塗布)增加到超過98%。
圖5示出利用抗反射材料40塗布工件支撐件20的效果。縱軸表示作為分數的透射率。橫軸表示以奈米(nm)為單位的波長。線500示出未經塗布的工件支撐件20的透射率依據波長的變化。線510示出塗布有抗反射材料40的工件支撐件20的透射率依據波長的變化。線510僅延伸到2500nm,因為大多數加熱元件30發射波長短於2500nm的光。由圖可看出,在400nm到2500nm範圍內的透射率的增加是明顯的,並且在此範圍內是約10%。因此,在某些實施例中,塗敷抗反射材料40將在從加熱元件30發射的波長下工件支撐件20的透射率增加至少5%。在某些實施例中,塗敷抗反射材料40將在從加熱元件30發射的波長下工件支撐件20的透射率增加至少10%。此改善了在加熱過程期間工件10的溫度均勻性。
將抗反射材料40塗敷到工件支撐件20也可具有其它益處。已經發現,工件支撐件20的溫度由於長期暴露於加熱元件30而升高。透過將抗反射材料40塗敷到工件支撐件20,可減少工件
支撐件20對熱的吸收,從而降低其溫度。因此,隨著時間的推移,塗布有抗反射材料40的工件支撐件20的溫度可低於無抗反射材料40的工件支撐件20的溫度。
在圖4所示的另一實施例中,加熱元件30可設置在工件10的上方。在此實施例中,工件支撐件20不阻擋任何光到達工件10。然而,工件支撐件20可以兩種方式影響工件10的溫度。首先,如上所述,在無抗反射材料40的情況下,工件支撐件20將一些光反射回加熱元件30。在此種情況下,所述被反射的光再次穿過工件10,從而局部加熱工件10的位於工件支撐件20正上方的部分。其次,如上所述,工件支撐件20可吸收一些熱,使得其比工件10更熱。塗敷抗反射材料40也可降低此種效果。
如上所述,抗反射材料40可設置在工件支撐件20的面向加熱元件30的頂面上。在某些實施例中,抗反射材料40也可設置在工件支撐件20的背對加熱元件30的底面上。此外,在某些實施例中,抗反射材料40可僅設置在工件支撐件20的背對加熱元件30的底面上。如上所述,抗反射材料40可設置在工件支撐件20的整個表面上,或者僅設置在工件支撐件20的表面的一部分上。
總而言之,本系統具有許多優點。首先,參照圖1所示的實施例,將抗反射材料塗敷到工件支撐件20的一個或兩個表面的至少一部分上增加了光透過工件支撐件20的透射。此減小了設置在工件支撐件20正上方的工件部分與工件10的其它部分之間
的溫度差異。因此,透過將抗反射材料40塗敷到工件支撐件20,改善了工件10的溫度均勻性。其次,本系統可被改裝到現有的處理室。可將抗反射材料40的塗層塗敷到現有的工件支撐件20,以實現在本文中所述的益處。第三,塗敷抗反射材料40可減少由工件支撐件20吸收的光量。此可降低在長時間暴露於加熱元件30之後工件支撐件20的溫度。
對於圖4所示的實施例,抗反射材料40用於減少光反射回透過工件10的設置在工件支撐件20正上方的部分。此可改善工件的溫度均勻性。另外,如上所述,可將抗反射材料40的塗層塗敷到現有的工件支撐件20,以實現在本文中所述的益處。最後,如上所述,塗敷抗反射材料40可減少由工件支撐件20吸收的光量。
本發明的範圍不受本文所述的具體實施例限制。實際上,透過閱讀以上說明及附圖,除本文所述實施例及潤飾外,本發明的其他各種實施例及對本發明的各種潤飾也將對所屬領域中的普通技術人員來說顯而易見。因此,這些其他實施例及潤飾都旨在落於本發明的範圍內。此外,儘管本文中已出於特定目的而在特定環境中的特定實作方式的上下文中闡述了本發明,然而所屬領域中的普通技術人員將認識到,本發明的適用性並不僅限於此且本發明可出於任意數目的目的而在任意數目的環境中有利地實作。因此,以下提出的發明申請專利範圍應慮及本文所闡述的本發明的全部廣度及精神來加以解釋。
20:工件支撐件
24:頂面
25:底面
30:加熱元件
40:抗反射材料
Claims (15)
- 一種處理室,包括:用於保持工件的工件支撐件,所述工件支撐件包括:靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;以及加熱元件,發射由所述工件吸收的一個或多個波長的光,其中所述工件支撐件設置在所述加熱元件與所述工件之間,使得所述工件的某些部分被所述加熱元件直接加熱,而所述工件的其它部分被首先透過所述工件支撐件的所述光加熱。
- 如申請專利範圍第1項所述的處理室,其中所述工件支撐件的所述頂面不接觸整個所述工件。
- 如申請專利範圍第1項所述的處理室,其中所述工件支撐件能夠透射由所述加熱元件發射的頻率範圍中的至少80%的所述光。
- 如申請專利範圍第3項所述的處理室,其中所述工件支撐件包含透明石英。
- 如申請專利範圍第1項所述的處理室,其中所述抗反射材料設置在所述底面上。
- 如申請專利範圍第1項所述的處理室,其中所述抗反射材料選自由氟化鎂、SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5以及Nb2O5、LaTiO3及TiO2組成的群組。
- 一種處理室,包括:用於保持工件的工件支撐件,所述工件支撐件包括:靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;以及加熱元件,發射由所述工件吸收的一個或多個波長的光,其中所述工件設置在所述加熱元件與所述工件支撐件之間,使得整個所述工件被所述加熱元件的所述光直接加熱。
- 如申請專利範圍第7項所述的處理室,其中所述工件支撐件的所述頂面不接觸整個所述工件。
- 如申請專利範圍第7項所述的處理室,其中所述抗反射材料設置在所述頂面上。
- 如申請專利範圍第7項所述的處理室,其中所述抗反射材料選自由氟化鎂、SiO2、CeF3、Al2O3、Y2O3、HfO2、Sc2O3、Ta2O5、Nb2O5、LaTiO3及TiO2組成的群組。
- 一種處理室,包括:加熱元件,發射由工件吸收的一個或多個波長的光;用於保持所述工件的工件支撐件,所述工件支撐件包括靠近所述工件的頂面及底面;以及抗反射材料,設置在所述頂面或所述底面的至少一部分上;其中與未設置所述抗反射材料的所述工件支撐件相比,在由所述加 熱元件發射的所述一個或多個波長下,來自所述加熱元件的所述光透過所述工件支撐件的透射率提高了至少5%。
- 如申請專利範圍第11項所述的處理室,其中所述抗反射材料設置在所述頂面及所述底面上。
- 如申請專利範圍第11項所述的處理室,其中所述工件支撐件的所述頂面不接觸整個所述工件。
- 如申請專利範圍第11項所述的處理室,其中與未設置所述抗反射材料的所述工件支撐件相比,在由所述加熱元件發射的所述一個或多個波長下,來自所述加熱元件的所述光透過所述工件支撐件的所述透射率提高了至少10%。
- 如申請專利範圍第11項所述的處理室,其中所述工件支撐件包括末端執行器。
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