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TWI332124B - Lithographic apparatus, device manufacturing method, and device manufactured thereby - Google Patents

Lithographic apparatus, device manufacturing method, and device manufactured thereby Download PDF

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Publication number
TWI332124B
TWI332124B TW91109784A TW91109784A TWI332124B TW I332124 B TWI332124 B TW I332124B TW 91109784 A TW91109784 A TW 91109784A TW 91109784 A TW91109784 A TW 91109784A TW I332124 B TWI332124 B TW I332124B
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radiation
projection
patterned
auxiliary
pattern
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TW91109784A
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Chinese (zh)
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Catharinus Hubertus Mulkens Johannes
Hugo Petrus Moers Marco
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Asml Netherlands Bv
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Description

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本發明係關於一種微影投射裝置,包括: -一用於供應輻射之投射光束的輕射系統; -一用於支撐圖案化構件的支撐結構,圖案化構件用於依 據所欲的圖案,使投射光束圖案化; -一用於支持一基板的基板台;及 -一用於將圖案化的光束投射於基板的目標部分之投射系 統。 ’、 此處使用的術語「圖案化構件」必須廣義地詮釋為意指 可用於賦予一進入的輻射光束以圖案化剖面_其對應於待 產生在基板的目標部分之圖案-之構件;術語「光閥」也 可以用於此上下文中。,一般而言,該圖案將對應於一在產 生於目標部分之元件中的特殊功能層,諸如積體電路或其 他元件(如下)。此圖案化構件之實例包含: 、 -一遮罩。遮罩的觀念在微影中係屬習知,且它包含的遮 罩型式係諸如二進位、交替式移相及衰減式移相以及各 種混合的遮罩型式。此遮罩之安置於輻射光束中會導致 依據遮罩上的圖案而施加於遮罩上之輻射的選擇性透射 (在透射遮罩的事例)或反射(在反射遮罩的事例)。在遮 罩的事例,支撐結構大體上係遮罩台,其確保遮罩可支 持於進入的輻射光束中之所欲的位置,且它可相對於光 束而移動(若欲如此的話)。 、 -一可程式鏡陣列。此裝置之一實例係一矩陣可定址表面 ,其具有一具黏著性與伸縮性的控制層與一反射表面。 此裝置根據的基本原則為(例如)反射表面的定址區域將The present invention relates to a lithographic projection apparatus comprising: - a light-emitting system for supplying a projected beam of radiation; - a support structure for supporting a patterned member, the patterned member being adapted to a desired pattern Projection beam patterning; - a substrate stage for supporting a substrate; and - a projection system for projecting the patterned beam onto the target portion of the substrate. The term "patterned member" as used herein shall be interpreted broadly to mean a member that can be used to impart an incoming radiation beam to pattern a profile that corresponds to the pattern of the target portion to be produced on the substrate; the term " Light valves can also be used in this context. In general, the pattern will correspond to a particular functional layer in the component that is produced in the target portion, such as an integrated circuit or other component (see below). Examples of such patterned members include: - a mask. The concept of a mask is well known in lithography, and it encompasses mask patterns such as binary, alternating phase and attenuated phase shifting, as well as various mixed mask patterns. The placement of the mask in the radiation beam results in selective transmission of radiation (in the case of transmissive masks) or reflection (in the case of reflective masks) of the radiation applied to the mask in accordance with the pattern on the mask. In the case of a mask, the support structure is generally a masking station that ensures that the mask can support the desired position in the incoming radiation beam and that it can move relative to the beam (if so). - A programmable mirror array. An example of such a device is a matrix addressable surface having an adhesive and flexible control layer and a reflective surface. The basic principle of this device is that, for example, the addressing area of the reflective surface will

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入射光反射成為衍射光’而未定址區域將入射光反射成 為非衍射光。使用一適當的過濾器,可以將該非衍射光 自反射光束濾出,只留下衍射光;以此方式,光束變成 依據矩陣可定址表面的定址圖案而圖案化。一可程式鏡 陣,之另外的實施例使用小鏡的矩陣配置,藉由施加一 適當局部化的電場,或藉由施加壓電式致動構件,可使 每一小鏡繞一軸線個別傾斜。再次地,鏡係矩陣可定址 ,$使所定社的鏡將在不同方向進入的輻射光束反射至 未疋址的鏡,以此方式,反射光束依據矩陣可定址的定 址圖案而圖案化。所需要的矩陣定址可以使用適當的電 子構件執行。在上述二狀況,目案化構件可以包括一或 更多可程式鏡陣列。此處提到的鏡陣列之更多資訊可( 例如)得自於美國專利US 5,296,891與1^ 5,523,193號及 pct專利申請案wo 98/38597與评〇 98/33〇96號其以引 用的方式併人本文中。在可程式鏡陣列的狀況,該支撑 結構可以由(例如)-框架或台實施,其於需要二 固定或可移動。 係 --可程式液晶顯示陣列。此構造之一例顯示於美 US 5,229,872號,其以引用的方式併人本文中。如上 ,在此狀況的支揮結構可以由(例如)_框架或台實施, 其於需要時可以係固定或可移動。 為了簡化的目的,此文的其餘部分(在某位置)特別針對勺 括一遮罩與遮罩台的例子;然而,在此狀況討論的—般: 則必須在以上提出的圖案化構件之更寬義的上下原The incident light is reflected as diffracted light ' while the unaddressed region reflects incident light into undiffracted light. Using a suitable filter, the undiffracted light can be filtered out of the reflected beam leaving only the diffracted light; in this manner, the beam becomes patterned according to the addressing pattern of the matrix addressable surface. A further embodiment of the programmable mirror array, using a matrix configuration of the small mirrors, by applying a suitably localized electric field, or by applying a piezoelectric actuator member, each small mirror can be individually tilted about an axis . Again, the mirror matrix can be addressed, allowing the mirror of the given society to reflect the incoming radiation beams in different directions to the mirrors that are not addressed, in such a way that the reflected beams are patterned according to the addressable addressing pattern of the matrix. The required matrix addressing can be performed using appropriate electronic components. In both of the above cases, the visualization component can include one or more arrays of programmable mirrors. More information on the mirror arrays mentioned herein can be obtained, for example, from U.S. Patent Nos. 5,296,891 and 1 5,523,193, and the patent application Serial No. 98/38,597 The way it is in this article. In the case of a programmable mirror array, the support structure can be implemented, for example, by a frame or a table, which is required to be fixed or movable. System -- a programmable LCD display array. An example of such a configuration is shown in U.S. Patent No. 5,229,872, the disclosure of which is incorporated herein by reference. As above, the fulcrum structure in this case can be implemented by, for example, a frame or a table, which can be fixed or movable when needed. For the sake of simplicity, the remainder of this article (at a certain location) is specifically directed to the example of a mask and a masking station; however, as discussed in this context, it must be more of the patterned components proposed above. Ups and downs

78208-990714.DOC 本紙杀尺度適用中國國家揉準(cns) A4規袼(21〇X297ny 133212478208-990714.DOC This paper is applicable to the Chinese national standard (cns) A4 regulations (21〇X297ny 1332124)

微影投射裝置可以用於(例如)積體電路(ic)的製造。在 此狀况’圖案化構件可以產生一對應於積體電路之個別層 的電路圖案’且此圖案可以成像於_基板(_晶圓)·其已塗 :一層輻射敏感材料(光阻)的目標部分(例如,包括一或更 夕曰曰粒)通爷’單—aa曰圓將含有整個網路之相鄰的目標 邛分’其經由投射系統逐一連續照射。在目前的裝置中, 藉由在-遮罩台i的遮罩而進行圖案&,可以在二不同型 式的機器之間進行區別。在一種微影投射裝置中,各目標 部分藉由一次曝光整個遮罩圖案於目標部分上而輻照;此 裝置通常稱為晶圓步進器。在—通常稱為步進掃描裝置的 替代裝置中’ |目標部分的輻照係藉由在給定的參考方向 (「掃描」方向)漸進掃描投射光束下方的遮罩圖案,且同 步掃描與此方向平行或反平行的基板台;因為通常投射系 ,具有的放大因子係Μ (通常<U,掃描基板台的速度乂將 疋一因子,其係掃描遮罩台之速度的M倍。有關於此處說 明的微影裝置的更多資訊可以得自於(例如)美國專利 Μ46,792號’其以引用的方式併入本文中。 在使用一微影投射裝置的製造過程中,一圖案(例如, 在一遮罩中)係成像於一基板上,基板由一輻射敏感材料 層(光阻)至少部分遮蓋。在此成像步驟以前,基板可以經 歷各種過程,諸如底層塗佈、光阻塗佈與軟烘烤。曝光以 後,基板可能承受其他程序’諸如曝光後烘烤(ΡΕΒ)、顯 影 '硬供烤與成像特徵的測量/檢驗·。此程序陣列當作一 裝置(例如積體電路)之個別層圖案化的基礎。然後,此圖 78208-990714.DOC _ 6 - 本紙張尺度適用中國國家標竿(CNS) Α4規格(210X 297公釐) 裝 η 線 1332124The lithographic projection device can be used, for example, in the fabrication of integrated circuits (ic). In this case, 'the patterned member can produce a circuit pattern corresponding to the individual layers of the integrated circuit' and this pattern can be imaged on the substrate (_wafer). It has been coated with a layer of radiation-sensitive material (photoresist) The target portion (eg, including one or more 曰曰 ) ) 通 通 通 通 通 ' ' 单 单 单 单 单 单 单 单 单 单 单 单 单 单 单 单 ' ' ' ' ' ' ' ' ' In the current device, the pattern & in the mask of the masking table i can be distinguished between two different types of machines. In a lithographic projection apparatus, each target portion is irradiated by exposing the entire mask pattern to a target portion at a time; this device is generally referred to as a wafer stepper. In an alternative device, commonly referred to as a step-and-scan device, the irradiation of the target portion is progressively scanned by a mask pattern below the projected beam in a given reference direction ("scan" direction), and synchronized scanning Parallel or anti-parallel substrate stages; because of the usual projection system, the magnification factor is Μ (usually <U, the speed of the scanning substrate stage will be a factor of one, which is M times the speed of scanning the mask stage. Further information on the lithographic apparatus described herein can be obtained, for example, from U.S. Patent No. 4,792, the disclosure of which is incorporated herein by reference in its entirety in its entirety in (for example, in a mask) imaged on a substrate that is at least partially covered by a layer of radiation-sensitive material (resistance). Prior to this imaging step, the substrate can undergo various processes, such as undercoating, photoresist Coating and soft baking. After exposure, the substrate may be subjected to other procedures such as post-exposure baking (ΡΕΒ), development 'hard-bake and imaging features/testing. The basis for the individual layer patterning of the device (eg integrated circuit). Then, this figure 78208-990714.DOC _ 6 - This paper scale applies to the Chinese National Standard (CNS) Α4 specification (210X 297 mm) with η line 1332124

案化層可能承受其他過程,諸如蝕刻、離子植入(摻雜)、 金屬化、氧化、化學機械拋光等,其全部欲完成製作一個 別層。如果需要若干層,則必須就每一新層,重複全部程 序或其變化。最後,一陣列之元件將呈現於基板(晶圓)上 這些元件接著藉由諸如切割或鑛切的技術彼此分離.,因 此個別元件可安裝在載體上、連接至接腳等。關於此過程 的其他資訊可以得自於-例如_peter van Zant寫的書「微晶 片製造.半導體處理的實際指引(Micr〇chip Fabricati()n: AThe layer may be subjected to other processes such as etching, ion implantation (doping), metallization, oxidation, chemical mechanical polishing, etc., all of which are intended to complete a separate layer. If several layers are required, then all programs or their changes must be repeated for each new layer. Finally, an array of components will be presented on the substrate (wafer). These components are then separated from each other by techniques such as cutting or dicing. Thus, individual components can be mounted on the carrier, attached to pins, and the like. Additional information about this process can be obtained from, for example, the book by _peter van Zant, "Microcrystalline wafer fabrication. Practical guidelines for semiconductor processing (Micr〇chip Fabricati()n: A

Practical Guide to Semiconductor Processing)」,第三版 ,麥格羅希爾(McGraw Hill)出版公司.,1997年,ISBN 〇_ 07-067250-4,其以引用的方式併入本文中。 為了簡化起見,投射系統此後可以稱為「透鏡」;然而 ,此術語必須廣義詮釋為涵蓋各種投射系統,包含(例如) 折射光學器件、反射光學器件與折反射光學系統。輻射系 統也可以包含依據用於指引、成型或控制輻射的投射光束 之這些設計型式中的任何型式而操作的元件,且此元件也 可以在以下總稱或單獨稱為「透鏡」。此外,微影裝置也 可以係具有二或更多基板台(及/或二或更多遮罩台)的型式 。在此「多階段」裝置中,額外的台可以平行使用,或者 ,可以在一或更多台上執行預備步驟,而一或更多其他台 係用於曝光。雙階段微影裝置描述於(例如)美國專= 5,969,441號與10 98/40791號,其以引用的方式併入本文 中〇Practical Guide to Semiconductor Processing), Third Edition, McGraw Hill Publishing Company, 1997, ISBN _ 07-067250-4, which is incorporated herein by reference. For the sake of simplicity, the projection system may hereinafter be referred to as a "lens"; however, the term must be interpreted broadly to encompass a variety of projection systems including, for example, refractive optics, reflective optics, and catadioptric optical systems. The radiation system may also include elements that operate in any of these designs depending on the projected beam used to direct, shape, or control the radiation, and such elements may also be collectively referred to below or individually as "lenses." In addition, the lithography apparatus can be of the type having two or more substrate stages (and/or two or more mask stages). In this "multi-stage" device, additional stations can be used in parallel, or preliminary steps can be performed on one or more stations, and one or more other stations can be used for exposure. A two-stage lithography apparatus is described, for example, in U.S. Patent Nos. 5,969,441 and 10 98/40,791, the disclosures of

微影投射裝置與方法係屬習知,其中二遮罩與二曝光用 78208-990714.DOC 本纸張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 裝 訂The lithographic projection apparatus and method are well known, and the two masks and two exposures are used in the 78208-990714.DOC paper scale for the Chinese National Standard (CNS) A4 specification (210X 297 mm) binding.

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於在二定向施加(例如)雙極照射,其匹配於該二定向中的 重要特徵。此二遮罩與二曝光方法的另-實例係施加用於 印刷具有小間距之密實特徵的雙極照射及將用於半密實 印刷的%形照射施加於隔離特徵其間距大於該密實特徵 的間距。如則例,二對應的曝光係連續執行,以獲得一結 合的曝光。此「雙曝光」.應用之二例具有特別的優點。在 第一例中,該二定向的解析度可以優於由-例如-單一曝光 四極照射所獲得的解析度。纟第二例中,可以為了二曝光 而獨立選擇光學趨近修正方法。此額外的自由度可以用於 減輕印刷特徵之尺寸變化-其係間距的函數_之問題。關於 此雙曝光應用的其他資訊可以得自於(例如)歐洲專利申請 案〇〇308528·9與〇〇31〇368.6,其以引用的方式併入本文中 。雖然此裝置與方法之性能優於傳統裝置與方法,但一缺 點係它們需要的曝光係傳統裝置與方法的二倍結果大致 上使生產量減半。 發明概要 本發明之一目的係提供微影投射裝置與方法其可結合 一不同的遮罩曝光,而大致上不會使生產量減少。 依據本發日月,此目的與其他目的係由一在開頭的段落中 提到的微影裝置而達成,其特徵為該裝置又包括: -一用於提供輻射之辅助投射光束的構件; 該支撑結構又用於支樓輔助圖案化構件,該辅助圖案化構 件用於依據一與圖案化構件的圖案不同之輔助圖案使辅 助投射光束圖案化; ~ 78208-990714.DOC · 8 · 本紙乐尺度適用中團固家標準(€;1^8) A4規格(21〇χ297公爱) 五、發明説明(6 且该二圖案化投射光束互相重叠對準而同時投射於基板上。 /為了容易參考,我們此後將該輻射系統稱為「第一輻射 糸統」及將該辅助輻射系統稱為「第二輻射系統」。類似 地’我們將輕射的該投射光束、該圖案化構件與該圖案個 為「輕射的第一投射光束」、「第一圖案化構件J、 :第一圖案」,且將輻射的該輔助投射光束、該輔助圖 案化構件與該輔助圖案個別稱為「輻射的第二投射光束」 、「第二圖案化構件」、與「第二圖案」。 此裝置係有利的,因為它允許二不同圖案同時投射於基 反上’提供二曝光方法的性能優點,而大致上不會增加過 程的處理時間。 一描型裝置,,用於支揮第-圖案化構件與第 -圖案化構件之單—支#結構的使用允許使用單—致動器 ’將第Hg案化構件在掃摇方向同時平移。此使二 曝光相對於彼此的可能對準㈣減少,使裝置本身的複: 性減少’因為不需要使二獨立的掃描支撐結構同步且使 裝置的成本減少,因為它避免使結構重複。 二圖案化構件可以支撐於支撐結構上,俾使第一與第二 圖案化構件的主要面大致上互相正交,以便利於將二圖案 化光束投射於基板上。 〃 單:長衝程致動器可以用於將支撐結構定位,而第一與 第短衝程致動器可以用於將第一與第二投射裝置個別相 對於支撐結構而定位。此確保第一與第二光束之間的重疊 誤差可Μ避免’且允許考慮-例如各圖案化構件的表面缺In the second orientation, for example, bipolar illumination is applied, which matches the important features in the two orientations. A further example of the two masking and two exposure methods applies bipolar illumination for printing dense features having a small pitch and application of %-shaped illumination for semi-compact printing to the isolation features at a pitch greater than the pitch of the dense features. . As an example, the two corresponding exposures are performed continuously to obtain a combined exposure. This "double exposure" application has two special advantages. In the first example, the resolution of the two orientations can be better than the resolution obtained by, for example, a single exposure quadrupole illumination. In the second example, the optical approach correction method can be independently selected for the second exposure. This additional degree of freedom can be used to alleviate the problem of dimensional changes in the printed features - a function of their spacing. Further information on this dual exposure application can be obtained, for example, from European Patent Application No. 308,528,9 and 〇〇31 to 368.6, which is incorporated herein by reference. While the performance of the apparatus and method is superior to conventional apparatus and methods, one drawback is that they require exposures that are twice as large as conventional methods and methods, halving throughput. SUMMARY OF THE INVENTION One object of the present invention is to provide a lithographic projection apparatus and method that can incorporate a different mask exposure without substantially reducing throughput. According to the present disclosure, this and other objects are achieved by a lithography apparatus as mentioned in the opening paragraph, characterized in that the apparatus further comprises: - a member for providing an auxiliary projection beam of radiation; The support structure is further used for a branch auxiliary patterning member for patterning the auxiliary projection beam according to an auxiliary pattern different from the pattern of the patterned member; ~ 78208-990714.DOC · 8 · Paper size Applicable to the group standard (€;1^8) A4 specification (21〇χ297 public) 5. Inventive Note (6 and the two patterned projection beams are superimposed on each other and projected on the substrate at the same time. / For easy reference We will refer to this radiation system as "first radiation system" and the auxiliary radiation system as "second radiation system". Similarly, we will lightly project the projected beam, the patterned member and the pattern. The first projected beam of light, the first patterned member J, the first pattern, and the auxiliary projected beam, the auxiliary patterned member and the auxiliary pattern are collectively referred to as "radiation" a second projected beam, a "second patterned member", and a "second pattern." This device is advantageous because it allows two different patterns to be simultaneously projected onto the base to provide the performance advantages of the two exposure method, and roughly The processing time of the process is not increased. A drawing device, the use of the single-branch structure for the first-patterning member and the first-patterning member allows the use of the single-actuator's Hg case The member is simultaneously translated in the sweeping direction. This reduces the possible alignment of the two exposures relative to each other (4), reducing the complexity of the device itself' because there is no need to synchronize the two independent scanning support structures and reduce the cost of the device. Because it avoids repeating the structure. The second patterned member can be supported on the support structure such that the major faces of the first and second patterned members are substantially orthogonal to each other to facilitate projecting the two patterned beams onto the substrate. Single: a long stroke actuator can be used to position the support structure, while first and second short stroke actuators can be used to individually and firstly project the first and second projection devices relative to the support structure Bit This ensure overlay error between the first and second beams can be avoided Μ 'and allows considerations - e.g. lack patterned surface of each member

78208-990714.DOC 1332124 A7 B7 五、發明説明( 陷’分別調整各圖案化構件。 較佳地,裝置的投射系統結合該第一與第二圖案化光束 ’且將結合的光束投射於基板的目標部分上。此允許共享 投射系統的很多元件,使成本與誤差的可能性皆減少。 在又一較佳實施例中’由獨立的輻射系統供應之第一與 第二投射光束係平面極化的光束,其在個別橫交於第一與 第二圖案化構件時,使用一極化光束結合器結合。商業上 可用的極化光束結合器之佈置通常係俾使待結合的光束必 須互相正交。因此,較佳為安置輻射系統與圖案化構件, 〃方式係俾使圖案化光束在互相正交的方向朝向光束結合 器傳播。 依據本發明的又一特點,提供一種裝置製造方法,包括 下列步驟: -提供一基板’其由一輻射敏感材料層至少部分遮蓋; -使用一輻射系統,提供一輻射的投射光束; 支撐-圖案化構件於一支撐結構上,且使用^,以在它 的剖面上,賦予投射光束以一圖案; —將轄射的圖案化光束投射於輻射敏感材料層的目標部分 其特徵為方法又包括下列步驟: -提供輻射之一輔助投射光束; 構上,且使用它,以 —圖案,該圖案與圖 支撐一輔助圖案化構件於該支撐結 在匕的剖面上賦予辅助投射光束以 案化構件的圖案不同;及78208-990714.DOC 1332124 A7 B7 V. DESCRIPTION OF THE INVENTION (Particularly adjusting each patterned member. Preferably, the projection system of the device incorporates the first and second patterned beams] and projecting the combined beam onto the substrate On the target portion, this allows for sharing of many components of the projection system, reducing the potential for cost and error. In yet another preferred embodiment, the first and second projection beams are supplied by an independent radiation system. a beam of light that, when individually traversed across the first and second patterned members, is bonded using a polarized beam combiner. The arrangement of commercially available polarized beam combiners is typically such that the beams to be combined must be positive to each other. Therefore, it is preferred to position the radiation system and the patterned member in such a manner that the patterned light beams propagate toward the beam combiner in mutually orthogonal directions. According to still another feature of the present invention, a device manufacturing method is provided, including The following steps: - providing a substrate 'which is at least partially covered by a layer of radiation-sensitive material; - using a radiation system to provide a projected beam of radiation; Supporting-patterning the member on a support structure and using ^ to impart a pattern to the projected beam on its cross section; - projecting the patterned patterned beam onto the target portion of the layer of radiation-sensitive material. In addition, the following steps are included: - providing one of the radiation to assist the projection beam; constructing, and using it, in a pattern, the pattern and the image supporting an auxiliary patterned member to impart an auxiliary projection beam to the support junction on the cross section of the support The pattern of the components is different; and

78208-990714.DOC 本紙張尺度適用中國国家標準(CNS) A4規格(21GX 297公爱3 ' ------ 133212478208-990714.DOC This paper scale applies to China National Standard (CNS) A4 specification (21GX 297 public love 3 ' ------ 1332124

時投射於輻射敏感材 將輔助圖案化光束與圖案化光束同 料層上。 ::在此文中已特別提到使用依據本發明的裝置以製造 積體電路,但應該了解,此裝置具有很多其他可能的用途 導::,它可用於製造整合式光學系、苑、磁域記憶體的引 導與偵測圖案、液晶顯示板、薄膜磁頭等。專業人士可以 I解,在此替代的用途之上下文中,術語「主光.罩」、「 阳圓」或「晶粒」之使用於此文中必須視為個別由更且一 般性的術語「遮罩」、「基板」與「目標部分」所㈣。 在本文件中’術If「輻射」與「光束」用於涵蓋所有型 式的電磁輻射,包含紫外線輻射(例如,其波長係365、 248、193、157或126毫微米)與EUV (極紫外線輻射,例如 ,波長在5-20毫微米的範圍)及粒子光束,諸如離子光束 或電子光束。 圖式簡單說明 現在將只舉例,並參考所附的示意圖,說明本發明的實 施例,其中: 圖1顯示依據本發明之一實施例的微影投射; 圖2顯示本發明之一示意配置; 圖3顯示本發明之一圖案化構件支撐結構; 圖4顯示一實施例,其中輻射的第一與第二投射光束係 由單一輻射源供應; ’、 圖5顯示一分光器’其包括複數平行配置的分光器。 圖中’對應的參考符號指示對應的零件。 78208-990714.DOC U _ 本纸張尺度適用中國國家標準(CNS) 格(21〇x 297公釐〉 --------- 1332124 A7 __B7 五、發明説明(9~) 較佳實施例詳細說明 實施例1 圖1示意顯示一依據本發明的特殊實施例之微影投射裝 置。裝置包括: -一輻射系統Ex,IL,用於供應輻射(例如,紫外線輻射) 的投射光束PB,其在此特殊事例也包括一輻射源la ; -一第一物件台(遮罩台)MT,具有一用於支持遮罩μα (例 如’主光罩)的遮罩支持器’且連接至用於將遮罩相對 於物品PL精確定位的第一定位裝置; -一第二物件台(基板台)WT,具有一用於支持基板w (例 如’塗有光阻的矽晶圓)的基板支持器,且連接至用於 將基板相對於物品PL精確定位的第二定位裝置; -一用於將遮罩Μ Α之輻照部分成像於基板w的目標部分c (例如’包括一或更多晶粒)上之投射系統(「透鏡」)PL。 如此處所述’裝置係透射型(具有一透射遮罩)。然而,通 常,它也可係諸如反射型(例如,具有一反射遮罩)。另外 ’裝置可使用其他種類的圖案化構件,諸如上述型式的可 程式鏡陣列。 輻射源LA (例如,激發雷射)產生一輻射光束。此光束 直接或在橫過調節構件-諸如.光束膨脹器ΕΧ_以後饋送進入 一照射系統(照射器)。照射器IL可以包括調整構件ΑΜ ’其用於設定光束中之強度分佈的外及/或内徑向界限(通 常個別稱為σ外與σ内)。此外,它通常包括各種其他元件 ,諸如積分器IN與電容器cc>。依此方式,施加於遮罩ΜΑ -12-The time is projected onto the radiation sensitive material to align the auxiliary patterned beam with the patterned beam. The use of the device according to the invention to manufacture integrated circuits has been specifically mentioned herein, but it should be understood that the device has many other possible uses: it can be used to manufacture integrated optical systems, courts, magnetic domains. Memory guiding and detecting patterns, liquid crystal display panels, thin film magnetic heads, and the like. Professionals can solve the problem. In the context of this alternative use, the use of the terms "main light cover", "yang circle" or "grain" must be considered in this article by a more general term. Cover, "Substrate" and "Target Part" (4). In this document, 'sense If' and 'beam' are used to cover all types of electromagnetic radiation, including ultraviolet radiation (eg, wavelengths of 365, 248, 193, 157, or 126 nm) and EUV (extreme ultraviolet radiation). For example, a wavelength in the range of 5-20 nm) and a particle beam such as an ion beam or an electron beam. BRIEF DESCRIPTION OF THE DRAWINGS Embodiments of the present invention will now be described by way of example only, and with reference to the accompanying drawings in which: FIG. 1 shows a lithographic projection in accordance with an embodiment of the invention; FIG. Figure 3 shows a patterned member support structure of the present invention; Figure 4 shows an embodiment in which the first and second projected beams of radiation are supplied by a single source of radiation; ', Figure 5 shows a beam splitter' which includes a plurality of parallels Configured splitter. Corresponding reference characters indicate corresponding parts. 78208-990714.DOC U _ This paper scale applies to China National Standard (CNS) grid (21〇x 297 mm) --------- 1332124 A7 __B7 V. Description of invention (9~) DETAILED DESCRIPTION OF THE INVENTION Example 1 Figure 1 shows schematically a lithographic projection apparatus in accordance with a particular embodiment of the present invention. The apparatus comprises: - a radiation system Ex, IL, a projection beam PB for supplying radiation (e.g., ultraviolet radiation), It also includes a radiation source la in this special case; a first object table (mask table) MT having a mask holder for supporting the mask μα (for example, a 'main mask') and connected thereto a first positioning device for accurately positioning the mask relative to the article PL; a second object table (substrate table) WT having a substrate support for supporting the substrate w (eg, 'resistor-coated germanium wafer) And connected to a second positioning device for accurately positioning the substrate relative to the article PL; - a target portion c for imaging the irradiated portion of the mask 于 to the substrate w (eg 'including one or more Projection system ("lens") PL on the die) as described herein Shooting type (having a transmissive mask). However, in general, it can also be of a reflective type (for example, having a reflective mask). In addition, the device can use other kinds of patterned members, such as the above-described type of programmable mirror The radiation source LA (eg, an excitation laser) produces a radiation beam that is fed into an illumination system (illuminator) either directly or after traversing an adjustment member, such as a beam expander 。_. The illuminator IL can include The adjustment member ΑΜ 'is used to set the outer and/or inner radial limits of the intensity distribution in the beam (usually referred to individually as σ outside and within σ). Furthermore, it typically includes various other components such as integrator IN and capacitor cc&gt In this way, applied to the mask ΜΑ -12-

78208-990714.DOC 本纸張尺度適用中國國家標準(CNS) Α4規格(210 X 297公釐) 1332124 A7 B7 五、發明説明( 上的光束PB在它的剖面具有所欲的均勻度與強度分佈。 應該注意,關於^,來源LA可以在微影投射裝置的外 殼中(諸如來源LA係水銀燈的—般狀況),但它也可遠離微 影投射裝i ’它所產生的輻射光束導入裝置中(例如,借 助於適當的指引鏡後一方案通常是來源la係激發雷射 的狀況。本發明與申請專利範圍涵蓋此二方案。 光束PB接著摘截遮罩MA,其支持於一遮罩'台mt。已橫 過遮罩ΜΑ後,光束ΡΒ通過透鏡杜,其將光束叩聚焦於基 板W之目才不口[3刀C。借助於第二定位構件(與干涉測量構 件叼,基板台WT可以精確地移動,例如,以將不同的目 標部分C定位在光束ΡΒ的路徑中。類似地,第一定位構件 可以用於-例如-在自一遮罩庫機械式收回遮罩μα以後或 在掃描期間,相對於光束ΡΒ的路徑而將遮罩μα精確地定 位。通常,物件台MT、WT的移動借助於一長衝程模組(粗 定位)與-短衝程模組(細定位)_其在圖4未明確顯示而 實現U ’在晶圓步進器(對比於步進掃描裝置)的狀況 ,遮罩台MT可以只連接至一短衝程致動器或可固定。 所示裝置可用於二不同的模式: 1.在步進模式,遮罩台MT基本上保持靜止,而一完整的 遮罩影像一次投射(即,單、一「閃光」)於一目標部分C 上。基板台WT接著在X及/或丫方向移動以使一不同的 目標部分C可以由光束PB輻照。 2_在掃描模式,基本上使用相同的方案,不過,一給定的 目標部分C未曝光於單-「閃光」中。遮罩台附係可在 -13-78208-990714.DOC This paper size applies to the Chinese National Standard (CNS) Α4 specification (210 X 297 mm) 1332124 A7 B7 V. Description of the invention (the upper beam PB has the desired uniformity and intensity distribution in its profile) It should be noted that, regarding ^, the source LA may be in the outer casing of the lithographic projection device (such as the source of the LA-based mercury lamp), but it may also be remote from the lithographic projection device i's generated radiation beam introduction device. (For example, by means of a suitable indexing mirror, the latter scheme is usually a condition in which the source la system excites a laser. The invention and the scope of the patent application cover the two schemes. The beam PB then picks up the mask MA, which supports a mask' After traversing the mask ,, the beam ΡΒ passes through the lens du, which focuses the beam 叩 on the substrate W. [3 kn. C. By means of the second positioning member (with the interferometric member 基板, the substrate table The WT can be moved precisely, for example, to position different target portions C in the path of the beam pupil. Similarly, the first positioning member can be used, for example, after mechanically retracting the mask μα from a mask library or During the scan period The mask μα is accurately positioned relative to the path of the beam 。. Typically, the movement of the object table MT, WT is by means of a long stroke module (coarse positioning) and a short stroke module (fine positioning). Figure 4 does not explicitly show the U' in the wafer stepper (compared to the stepper scanning device), the mask table MT can be connected to only a short-stroke actuator or can be fixed. The device shown can be used for two Different modes: 1. In the step mode, the mask table MT remains substantially stationary, and a complete mask image is projected once (ie, single, "flash") on a target portion C. The substrate table WT is then Move in the X and / or 丫 direction so that a different target portion C can be irradiated by the beam PB. 2_ In the scan mode, basically the same scheme is used, however, a given target portion C is not exposed to a single - In "Flash", the mask can be attached at -13-

7820S-990714.DOC 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 1332124 五、發明説明( ) "--- —給定的方向(所謂「掃描方向」,例如向)以速度 ,動’以致於促使投射光束四掃描—遮罩影像;並且 ’基板台wt同時在相同或相反的方向以速度ν=Μν移動 ’其tM係透鏡PL的放大率(典型上.1/4或1/5)。依此 方式’可以曝光一相當大的目標部分c,不需要犧牲解 析度。 圖2顯示一依據本發明第一特點之裝置的示意配置。一 般的操作與參考圖丨而說明如上者相同,所以不再重複。 圖2所示裝置具有一第一輻射系統丨與—第二輻射系統i i ,其個別供應輻射的第一投射光束4與輻射的第二投射光 束W。各輻射系統玉與丨丨包括一元件IL,且可包括一元件 ,如上述及如圖丨所示。輻射系統^與丨丨不需要相同。例 如,如果輻射係由單一來源產生,則二輻射系統的來源與 入口之間的光學路徑長度可能不相等,導致在這些入口之 不同的投射光束剖面。此不同則可能導致必須使用(例如) 圖1的光束膨脹器,其特徵係不同的光束膨脹因子,以補 ㉔5亥剖面的不同。然而,通常二輻射系統可以大致上彼此 複製。各輻射系統可以包括調整構件,諸如用於設定σ内 與σ外之值的圖1的元件am,或一用於諸如用於產生多極 照射模式的可調整元件。第一輻射系統之調整的設定可以 與第二輻射系統之調整的設定不同,以彼此獨立地個別使 第一與第二圖案的投射影像之微影品質最佳化。 投射光束4、14係個別由第一遮罩2與第二遮罩12圖案化 ’以產生圖案化輻射光束24、224。在投射系統20中,第 -14-7820S-990714.DOC This paper scale applies to China National Standard (CNS) A4 specification (210X297 mm) 1332124 V. Invention description ( ) "--- - given direction (so-called "scanning direction", for example) Speed, moving 'so that the projection beam is four-scanned—masking the image; and 'the substrate stage wt is simultaneously moving at the speed ν=Μν in the same or opposite directions' the magnification of its tM-based lens PL (typically .1/4 Or 1/5). In this way, a relatively large target portion c can be exposed without sacrificing the degree of resolution. Figure 2 shows a schematic configuration of a device according to a first feature of the invention. The general operation is the same as that of the reference figure, so it will not be repeated. The device shown in Fig. 2 has a first radiation system — and a second radiation system i i which individually supply a first projected beam 4 of radiation and a second projected beam W of radiation. Each of the radiation systems jade and weir includes an element IL and may include an element as described above and as shown in FIG. The radiation system ^ does not need to be the same as 丨丨. For example, if the radiation system is produced by a single source, the optical path length between the source and the entrance of the second radiation system may not be equal, resulting in different projected beam profiles at these entrances. This difference may result in the necessity to use, for example, the beam expander of Figure 1, which is characterized by different beam expansion factors to compensate for the difference in the 245-Hail profile. However, typically the two radiation systems can be replicated substantially to each other. Each radiation system may include an adjustment member, such as element am of Figure 1 for setting values within σ and outside of σ, or an adjustable element such as for generating a multi-pole illumination mode. The adjustment of the first radiation system can be set differently than the adjustment of the second radiation system to individually optimize the lithography quality of the projected images of the first and second patterns independently of each other. The projected beams 4, 14 are individually patterned by the first mask 2 and the second mask 12 to produce patterned radiation beams 24,224. In the projection system 20, the -14-

78208-990714.DOC 本纸張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐) 133212478208-990714.DOC This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 1332124

一與第二圖案化輻射光束個別通過透鏡3、13,且在一極 化光束結合器21 (其係極化分光器,以相反方式使用)中結 合。透鏡3與13可個別用於補償(或者_可以的話_修正)圖案 化光束24、224的異常,其優點係可執行第一圖案化光束 的補償(或修正),不需要影響第二圖案化光束,反之亦然 。然而,如果不需要此補償構件’則透鏡3與13可不存在 ,以使極化光束結合器在包含於投射系统中之彡鏡元件23 的上游。 為了最佳地利用一極化光束結合器的光束結合性質(即 ,減少轄射能量的損失),圖案化光束24與224的電磁輻射 線性極化,俾使光束24的電場大致上平行於圖2的平面(「 P極化」),且光束224的電場大致上垂直於圖2的平面(「s 極化」)。 . 圖案化光束的極化之該狀態之—額外優點與二極照射一 起發生。當使用線性極化電磁輻射執行二極曝光時,里中 電場大致上垂直於連接二極圖案中之二(主要)極的軸線, 且其中該㈣接著大致上垂直於成像於曝光處的遮罩特徵 ’該電場將大致上平行於那些特徵。此可以大大增加曝光 的效率,I生(尤其是)大大增加的影像對比"匕方面請見 歐洲專利申請案0030852.9號。 然而,較佳者為在二圖案化光束結合以後改變極化的狀 態。例如,圓形極化的圖案化光束可能對於投射系統的極 化依賴成像性質較不敏感。所以,目前的實施例提供一 九/4板22 (「四分之一波板」)於極化光束結合器的下游。 78208-990714.DOC - 15 · 本紙張尺度適用巾關家標準(CNS) A4規格(21〇χ297公爱j -------- 1332124 A7 B7 五、發明説明( ) 它的主要軸線與該S及P極化方向成45度,則此板將結合的 圖案化光束在它通過光學系統23的剩餘部分且成像於基板 25上以前轉換為大致上圓形極化的圖案化光束2224。 輻射系統1與1 1可以包括(遠離或整合式)輻射源,其產 生線性極化光。可利用此以引發圖案化光束的上述S與p極 化狀態。也可以藉由安置在第一與第二投射光束的適當位 置之線性極化過濾器,固定該線性極化狀態。 如圖3所示’二遮罩2、12安裝在一結合的遮罩台30上。 第一遮罩2水平安裝在遮罩台的第一區段3〇a,而第二遮罩 12重直.文裝在遮罩台的第二區段30b。此允許二遮罩一起 掃描,減少—曝光之間的偏差的風險。單一長衝程致動器 用於驅動遮罩台30,而獨立的短衝程致動器調整各遮罩2 、12相對於遮罩台30的位置。 為了確保(已知由二圖案化光束供應的能量所導致建立 在基板的曝光涉及單一掃描速度)二曝光的曝光劑量各在 公差中,各種衰減器係輻射系統1與丨丨的一部分。藉由此 可變的衰減器,施加於基板目標區域的輻射之曝光劑量可 以為了二圖案化投射光束的各光束而彼此獨立地調諧。應 該注意,掃描速度的改變將以相同方式影響每一圖案化投 射光束的曝光劑量。 因為第二圖案化投射光束與第一圖案化投射光束同時投 射於基板上,故二光束之間的彼此相干性必須盡可能低, 以使二投射影像之間的干涉減至最小。相干的觀念涉及沿 者輪射傳播方向(此後稱為「暫時相干」)的相干長度與在The first and second patterned radiation beams pass individually through the lenses 3, 13 and are combined in a polarization beam combiner 21 (which is a polarizing beam splitter, used in the opposite manner). The lenses 3 and 13 can be used individually to compensate (or _may-correct) the anomalies of the patterned beams 24, 224, the advantage of which is that the compensation (or correction) of the first patterned beam can be performed without affecting the second patterning. Light beam and vice versa. However, if this compensating member' is not required, the lenses 3 and 13 may be absent so that the polarized beam combiner is upstream of the frog mirror element 23 included in the projection system. In order to optimally utilize the beam combining properties of a polarized beam combiner (i.e., reduce the loss of conditioned energy), the electromagnetic radiation of patterned beams 24 and 224 is linearly polarized such that the electric field of beam 24 is substantially parallel to the map. The plane of 2 ("P polarization"), and the electric field of beam 224 is substantially perpendicular to the plane of Figure 2 ("s polarization"). The state of polarization of the patterned beam - an additional advantage occurs with the dipole illumination. When a two-pole exposure is performed using linearly polarized electromagnetic radiation, the inner electric field is substantially perpendicular to the axis connecting the two (primary) poles of the dipole pattern, and wherein the (four) is then substantially perpendicular to the mask imaged at the exposure. The feature 'The electric field will be substantially parallel to those features. This can greatly increase the efficiency of the exposure, and the image contrast of the "in particular" is greatly increased. See European Patent Application No. 0030852.9. However, it is preferred to change the state of polarization after the two patterned beams are combined. For example, a circularly polarized patterned beam may be less sensitive to the polarization-dependent imaging properties of the projection system. Therefore, the current embodiment provides a nine/four board 22 ("quarter wave plate") downstream of the polarized beam combiner. 78208-990714.DOC - 15 · This paper scale applies to the towel standard (CNS) A4 specification (21〇χ297 public love j -------- 1332124 A7 B7 V. Invention description ( ) Its main axis and The S and P polarization directions are at 45 degrees, and the plate converts the combined patterned beam into a substantially circularly polarized patterned beam 2224 before it passes through the remainder of the optical system 23 and is imaged onto the substrate 25. Radiation systems 1 and 1 1 may include (away or integrated) radiation sources that produce linearly polarized light. This may be utilized to induce the aforementioned S and p polarization states of the patterned beam. Also by placing in the first A linearly polarized filter of a suitable position of the second projected beam fixes the linearly polarized state. As shown in Fig. 3, the 'two masks 2, 12 are mounted on a combined mask stage 30. The first mask 2 is horizontal Installed in the first section 3〇a of the masking station, and the second mask 12 is straightened. The text is mounted on the second section 30b of the masking station. This allows the two masks to be scanned together, reducing - between exposures Risk of deviation. Single long-stroke actuators are used to drive the mask table 30, while independent short-stroke actuators are adjusted The position of each of the masks 2, 12 relative to the masking station 30. To ensure that (the exposure of the substrate is known to result in a single scanning speed due to the energy supplied by the two patterned beams), the exposure doses of the two exposures are each within tolerance, The various attenuators are part of the radiation system 1 and the enthalpy. With this variable attenuator, the exposure dose of the radiation applied to the target area of the substrate can be tuned independently of each other for the two patterned beams of the projected beam. The change in scanning speed will affect the exposure dose of each patterned projection beam in the same way. Since the second patterned projection beam is projected onto the substrate simultaneously with the first patterned projection beam, the mutual coherence between the two beams must be As low as possible to minimize interference between the two projected images. The concept of coherence involves the coherence length of the direction along which the person is propagating (hereafter referred to as "temporary coherence")

78208-990714.DOC78208-990714.DOC

1332124 A7 -----— B7 五、發明説明(14 ) ' —-- 垂直於傳播方向之方向(此後稱為「空間 度。空間相干大體上不會產生_,因為轄射源_ = 發雷射或水銀電弧燈-典型上產生具有低空間相干的光。 空間相干典型上係-例如-低’以致於對於光學微影而言, 斑紋的現象-其直接關係於空間相干並非問題。為了避免 暫時相干的發纟’在本實施例中預先設想使用二獨立的轄 射源’ 一來源用於每一輻射系統。 "在另-實施例中,極化光束結合器係板分光器或薄膜分 光器’其充當光束結合器。諸如圖2的元件21之立方體形 極化光束結合器通常由―^合於直角三㈣斜邊表面的 二稜鏡形組件(至少其—具有—在直角三角形斜邊表面上 的介電質、光束結合塗層)製成。此粘合的發生可能導致 問題,諸如輻射衝擊造成的不穩定,s戈氣體漏出導致的污 染。此外,立方體形元件之存在於圖案化光束橫過的路徑 中可能造成特定的影像偏差,其在投射系統中必須修正(或 至少必須減至最小)。板光束結合器或薄膜光束結合器的 使用可減輕這些問題。這些光束結合器的特徵係單一平行 平面基板’其承載—光束結合器塗層,以致於沒有光學粘 合介面。此外,載體基板可以足夠薄(例如,在薄膜光束 結合器的狀況係在微米之等級),以避免不可以忍受的光 學像差之發生。 下-實施例顯示於圖4。此處,由輻射系統個別供 應的輻射4與14之投射光束係由單一輻射表面LA產生。來 自來源LA的投射光束41由分光器212分為一供應至輻射系 78208-990714.DOC _ -17- 本纸張尺度遂用中S S豕標準(CNS) A4規格(21GX297公爱) 1332124 A71332124 A7 ------ B7 V. Description of invention (14) '——-- Direction perpendicular to the direction of propagation (hereafter referred to as "space degree. Spatial coherence does not generally produce _, because the source _ = hair Laser or mercury arc lamps - typically produce light with low spatial coherence. Spatial coherence is typically - for example - low - so that for optical lithography, the phenomenon of speckle - which is directly related to spatial coherence is not a problem. Avoiding temporarily coherent hair strands 'In this embodiment, it is pre-conceived to use two independent sources of radiation'. One source is used for each radiation system. " In another embodiment, a polarized beam combiner plate splitter or A thin film spectroscope 'which acts as a beam combiner. A cube-shaped polarized beam combiner such as element 21 of Figure 2 is typically a two-sided assembly that is fused to a right-angled three (four) beveled surface (at least - with - at right angles) The dielectric on the beveled surface of the triangle, the beam is combined with the coating. The occurrence of this adhesion may cause problems such as instability caused by radiation shock and contamination caused by leakage of gas. In addition, the cube-shaped element The particular image deviation may be caused in the path through which the patterned beam traverses, which must be corrected (or at least minimized) in the projection system. The use of a plate beam combiner or thin film beam combiner can alleviate these problems. The bonder features a single parallel planar substrate that carries the beam combiner coating such that there is no optical bonding interface. Furthermore, the carrier substrate can be sufficiently thin (eg, the condition of the thin film beam combiner is on the order of microns) To avoid the occurrence of unacceptable optical aberrations. The lower-embodiment is shown in Figure 4. Here, the projected beams of radiation 4 and 14 individually supplied by the radiation system are produced by a single radiation surface LA. From source LA The projection beam 41 is divided by the beam splitter 212 and supplied to the radiation system 78208-990714.DOC _ -17- This paper size is used in the SS 豕 standard (CNS) A4 specification (21GX297 public) 1332124 A7

-18 - 統1的第-投射光束42,及-第二投射光束43,其橫過元 件213與214,且供應至轄射系統2。元件213與214可以·例 如-係折疊鏡,如圖4所示。 由於分光器212與圖案化構件2、12之間的二光束之個別 路徑長度差’ it免-可能有害的效應,其由圖案化光束24 與224 (在圖4中)之間的暫時相干所造成。 分光器212可以係極化分光器(例如,極化板分光器或極 化立方體分光器)。然後,可以利用激發雷射通常產生線 性極化光的事實:藉由相對於x,y方向,將雷射的極化可 轉動地定位於45。的角,如圖4所示,分光器212將1>與§極 化個別賦予投射光束42與43 ,且使輻射能量的損失減至最 小。此外,線性極化的使用-如上述_能夠以此方式避免。 在另一實施例,分光器212包括複數配置成平行的分光 器50,如圖5所示。各分光器5〇的特徵為賦予透射光束的 能量與賦予反射光束的能量之差比。藉由在平行於分光表 面的方向移動分光器212,由圖5的箭頭51所示,圖案化輻 射光束24與圖案化輻射光束224的曝光劑量之比可以調整 ,大致上不會改變結合的圖案化光束2224之能量。給定單 一掃描速度,則此調整裝置可以同時使用,以設定用於二 圖案化光束之所需要的曝光劑量。可變衰減器_如上述·之 使用於此目的能夠以此方式避免。結果,所需要的曝光劑 量能夠以更高的掃描速度執行。 雖然已在以上說明特定實施例,但可以了解,能夠以所 述者以外的方式實施本發明。此說明不企圖限制本發明。The first-projected beam 42 of the system 1 and the second projected beam 43 traverse the elements 213 and 214 and are supplied to the trajectory system 2. Elements 213 and 214 can, for example, be a folding mirror as shown in FIG. Due to the difference in the individual path lengths of the two beams between the beam splitter 212 and the patterning members 2, 12, it is a potentially detrimental effect, which is caused by the temporal coherence between the patterned beams 24 and 224 (in Figure 4). Caused. The beam splitter 212 can be a polarizing beam splitter (e.g., a polarizing plate beam splitter or a polarizing cube beam splitter). The fact that the excited laser typically produces linearly polarized light can then be utilized: by polarizing the polarization of the laser at 45 relative to the x, y direction. The angle of the beam splitter 212, as shown in Fig. 4, assigns 1> and § polarization to the projection beams 42 and 43 individually, and minimizes the loss of radiant energy. Furthermore, the use of linear polarization - as described above - can be avoided in this way. In another embodiment, the beam splitter 212 includes a plurality of beamsplitters 50 arranged in parallel, as shown in FIG. Each of the beamsplitters 5 is characterized by a ratio of the difference between the energy imparted to the transmitted beam and the energy imparted to the reflected beam. By moving the beam splitter 212 in a direction parallel to the beam splitting surface, the ratio of the exposure dose of the patterned radiation beam 24 to the patterned radiation beam 224 can be adjusted as indicated by the arrow 51 of FIG. 5, substantially without changing the combined pattern. The energy of the beam 2224. Given a single scan speed, the adjustment device can be used simultaneously to set the desired exposure dose for the two patterned beams. The use of a variable attenuator as described above can be avoided in this way. As a result, the amount of exposure agent required can be performed at a higher scanning speed. Although specific embodiments have been described above, it will be appreciated that the invention may be practiced otherwise than as described. This description is not intended to limit the invention.

78208-990714.DOC 本纸張尺度適用中國國家標準(CNS) A4規格(210X 297公釐) 裝 訂 線 1332124 A7 B7 五、發明説明( 元件符號對照表 1 First radiation system 第一輻射系統 2,12 First and second masks 第一與第二遮罩 3,13 Lenses 透鏡 4,14 Projection beams of radiation 輻射的投射光束 11 Second radiation system 第二輻射系統 20 Projection system 投射系統 21 Polarizing beam-combiner 極化光束結合器 22 Plate 板 23 Lens element/optical system 透鏡元件/光學系統 24 > 224 Patterned radiation beams 圖案化輻射光束 30 Mask table 遮罩台 30a,b First and second sections 第一與第二區段 41 Projection beam 投射光束 42,43 First and second projection beams 第一與第二投射光束 212 Beam splitter 分光器 213 , 214 Traverse elements 橫向元件 2224 Patterned beam 圖案化光束 AM Adjusting means 調整構件 C Target portion 目標部分 CO Condenser 電容器 Ex Beam expander 光束膨脹器 IL Illumination system/illuminator 照射系統/照射器 LA Radiation source 輻射源 -19-78208-990714.DOC This paper size is applicable to China National Standard (CNS) A4 specification (210X 297 mm) Gutter 1332124 A7 B7 V. Invention description (Part symbol comparison table 1 First radiation system First radiation system 2,12 First And second masks first and second masks 3,13 Lenses lenses 4,14 Projection beams of radiation Radiation of the projected beam 11 Second radiation system Second radiation system 20 Projection system Projection system 21 Polarizing beam-combiner Polarized beam combiner 22 Plate plate 23 Lens element/optical system Lens element/optical system 24 > 224 Patterned radiation beams Patterned radiation beam 30 Mask table Mask table 30a, b First and second sections 41 Projection beam Projection beam 42 43 First and second projection beams First and second projection beams 212 Beam splitter beamsplitters 213, 214 Traverse elements Transverse elements 2224 Patterned beam AM Beaming elements Adjustment component C Target portion Target part CO Condenser Capacitor Ex Beam expan Der beam expander IL Illumination system/illuminator Irradiation system / illuminator LA Radiation source Radiation source -19-

78208-990714.DOC ¥紙張尺度適用中0®家標準(CNS) A4規格(210X 297公釐) ' ------- 1332124 A7 B7 五、發明説明(17 ) MT Mask table/first object table 遮罩台/第一物件台 MA Mask/reticle 遮罩/主光罩 PB Projection beam 投射光束 PL Projection system/projection lens 投射系統/投射透鏡 W Substrate/wafer 基板/晶圓 WT Substrate table/second object table 基板台/第二物件台 78208-990714.DOC - 20- 本紙張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐)78208-990714.DOC ¥ Paper size applicable 0® standard (CNS) A4 size (210X 297 mm) ' ------- 1332124 A7 B7 V. Invention description (17) MT Mask table/first object table Masking table / first object table MA Mask / reticle mask / main reticle PB Projection beam projection beam PL Projection system / projection lens projection system / projection lens W Substrate / wafer substrate / wafer WT Substrate table / second object table substrate Table / second object table 78208-990714.DOC - 20- This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 mm)

Claims (1)

年. 六、申請專利範圍 曰 1. 一種微影投射裝置,包括: 用於供應輻射之一投射光束的輻射系統; -一用於支撑圖案化構件的支撐結構,該圖案化構 於依據所欲的圖案使該投射光束圖案化; 件用 -一用於支持一基板的基板台; -一用於將該圖案化的光束投射於該基板的— ^ M ^ 〜e 分 其特徵為該裝置進一步包括: -一用於提供輻射之—輔助投射光束的構件; 其中該支撑結構進-步用於支樓輔助_案化構件 助圖案化構件用於依據一與該圖案化構件的圖案不: 輔助圖案使該輔助投射光束圖案化; 且二圖案化投射光束互相重疊對準而同時投射於該基板 長衝程致動構件,用於將該支撐結構定位; 對於該 第一紐衝程致動構件,用於將該圖案化構件相 支撐結構而定位; -第二短衝程致動構件 於该支標結構而定位。 用於將該辅助圖案化構件相對 2·=專利範圍第1項之微影投射裝置,其中該支撑結 冓支撐一圖案化構件,俾使各圖案化構件的該主要面大 致上正交於另一圖案化構件的該主要面。 3 ·如申請專利範圍第1或2項 系統結合二圖案化光束, 之微影投射裝置,其中該投射 且將該結合的光束投射於該基 78208-990714.DOC 1332124 A8 B8 C8Year 6. Application Patent Range 曰 1. A lithography projection device comprising: a radiation system for supplying a projection beam of radiation; a support structure for supporting the patterned member, the pattern being configured according to what is desired a pattern for patterning the projection beam; a substrate for supporting a substrate; - a ^M^~e for projecting the patterned beam onto the substrate, characterized by further The method comprises: - a member for providing radiation - an auxiliary projection beam; wherein the support structure is further used for the support of the branch - the member of the aid member is patterned for use according to a pattern of the patterned member: a pattern patterning the auxiliary projected beam; and the two patterned projection beams are aligned with each other while being projected onto the substrate long-stroke actuation member for positioning the support structure; for the first neo-stroke actuation member, Positioning the patterned member in a support structure; - the second short-stroke actuation member is positioned in the support structure. The lithographic projection apparatus for the auxiliary patterning member, wherein the supporting sill supports a patterned member such that the main surface of each patterned member is substantially orthogonal to the other The main face of a patterned member. 3. A lithographic projection apparatus in which the system incorporates a second patterned beam, wherein the projection and projection of the combined beam is projected onto the base, as described in claim 1 or 2, wherein the combined beam is projected onto the base 78208-990714.DOC 1332124 A8 B8 C8 板的該目標部分上。 4·如申請專利範圍第1或2項之微影投射裝置,其中該輔助 投射光束係由一輔助輻射系統提供。 5.如申請專利範圍第1或2項之微影投射裝置,其中二投射 光束為平面極化的光束。 6·如申請專利範圍第5項之微影投射裝置,其中該等投射 光束係使用一極化光束結合器予以結合。 7.如申請專利範圍第6項之微影投射裝置,其中該極化光 束結合器係該投射系統的—部分;且該投射系統進 包括一 λ/4板。 8·如申凊專利範圍第1或2項之微影投射裝置 射光束大致上互相不相干。 9·如申請專利範圍第丨或2項之微影投射裝置 化構件係遮罩。 10.如申請專利範圍第!或2項之微影投射裝置 輻射糸統包括一賴射源β 11·如申請專利範圍第4項之微影投射裝置,進一步包括— 單一輕射源,用於供應-輻射光束至該輻射系統及供應 至該輔助輻射系統。 一 12·—種元件製造方法,包括下列步驟: -提供一基板,其由一輻射敏感材料層至少部分遮蓋; 使用一輻射系統提供一輻射的投射光束; , -支揮-圖案化構件於-支樓結構上,幻吏用它以在其 剖面上賦予該投射光束以一圖案; 、 其中該等投 其中二圖案 其中至少一 裝 訂 線 78208-990714.DOC -2· 1332124 圍 六、申請專利範 將°亥輕射的圖案化光束投射於該賴射敏感材料層的一 目標部分上; :、特徵為该方法進—步包括下列步驟 -”供輻射之一輔助投射光束; =供長衝程致動構件,且使用它以將該支標結構定 - —第一短衝程致動構件,且使用它以將該圖荦化 構件相對於該支撐結構而定位; 供-第二短衝程致動構件,且使用它以將 案化構件相對於該支撐結構而定位; 該輔助圖案化構件於該支撐結構 在其剖面上賦予該輔助投射光束以 =用匕以 該圖案化構件的圖案不同;及 ” μ圖案與 -將該辅助圖案化光束與該圖案化光 射敏感材料層上。 叮仅射於該輻 -3- 78208-990714.DOC 本紙張尺度適用中國國家標準(CNS)A4規格(210x297公釐)On the target part of the board. 4. The lithographic projection apparatus of claim 1 or 2, wherein the auxiliary projection beam is provided by an auxiliary radiation system. 5. The lithographic projection apparatus of claim 1 or 2, wherein the two projection beams are plane polarized beams. 6. The lithographic projection apparatus of claim 5, wherein the projection beams are combined using a polarized beam combiner. 7. The lithographic projection apparatus of claim 6, wherein the polarized beam combiner is part of the projection system; and the projection system comprises a λ/4 plate. 8. The lithographic projection apparatus of claim 1 or 2 of the patent scope is substantially irrelevant to each other. 9. If the lithography projection device of the third or second application of the patent scope is a mask. 10. If you apply for a patent scope! Or a lithographic projection device radiation system comprising: a ray source β 11 · a lithographic projection device according to claim 4, further comprising - a single light source for supplying a radiation beam to the radiation system And supplied to the auxiliary radiation system. A 12-component manufacturing method comprising the steps of: - providing a substrate at least partially covered by a layer of radiation-sensitive material; using a radiation system to provide a projected beam of radiation; - a supporting-patterning member - In the structure of the branch building, the illusion is used to give the projection beam a pattern on its cross section; wherein the two of the patterns are at least one of the binding lines 78208-990714.DOC -2· 1332124, and the patent application is applied. Projecting a light beam of the light-emitting beam onto a target portion of the radiation-sensitive material layer; characterized in that the method further comprises the following steps: "one of the radiation is used to assist the projection beam; = for the long stroke Moving the member and using it to define the sub-structure as a first short-stroke actuation member and using it to position the image deuteration member relative to the support structure; for the second short-stroke actuation member And using it to position the case member relative to the support structure; the auxiliary patterning member imparts the auxiliary projected beam to the support structure in its cross section Different patterns patterned member; and "μ pattern - the auxiliary pattern with the light beam emitted patterned light-sensitive material layer.叮Only on the spoke -3- 78208-990714.DOC This paper size applies to the Chinese National Standard (CNS) A4 specification (210x297 mm)
TW91109784A 2002-05-10 2002-05-10 Lithographic apparatus, device manufacturing method, and device manufactured thereby TWI332124B (en)

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