TW583512B - Lithographic manufacturing process, lithographic projection apparatus, and device manufactured thereby - Google Patents

Lithographic manufacturing process, lithographic projection apparatus, and device manufactured thereby Download PDF

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TW583512B
TW583512B TW90113618A TW90113618A TW583512B TW 583512 B TW583512 B TW 583512B TW 90113618 A TW90113618 A TW 90113618A TW 90113618 A TW90113618 A TW 90113618A TW 583512 B TW583512 B TW 583512B
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Taiwan
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lithographic
radiation
projection
information
substrate
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TW90113618A
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Chinese (zh)
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Jozef Maria Finders
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Asml Netherlands Bv
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Abstract

A lithographic manufacturing process is disclosed in which a first information on a first lithographic transfer function of a first lithographic projection apparatus is obtained. The information is compared with a second information on a second lithographic transfer function of a second lithographic projection apparatus, for reference. The difference between the first and second information is calculated. Then the change of machine settings for the first lithographic projection apparatus, needed to minimize the difference, is calculated and applied to the first lithographic projection apparatus, such that the match between the first and second lithographic projection apparatus of any pitch-dependency of feature errors is improved.

Description

583512 五、發明說明(1) 本發明關於一微影製造方法包含下列步驟: -提供一第一微影投影裝置; -提供一基板至少部份由一層輻射靈敏材料所覆蓋之基 板, -提供一使用一輻射系統的輻射投影光束; ^ . -使用一成型裝置以賦予該投影光束一圖樣在其橫截面;二 -投影該輻射的成型光束在使用一投影系統的標的埠上以 , 形成一投射影像; -提供一第二微影投影裝置以為參考。 該在此使用之π成型裝置π應被廣泛說明參考為可以被使 用以賦予一具有一成型橫截面之入射輻射光束,對應一產 生在該基板的標的埠之圖樣,該”光閥π也可被使用在此内 容。一般而言,該圖樣將對應產生在該標的埠的設備的一 特別功能層,如一積體電路或其他設備(如下示)。該等成 型裝置的範例包括: - 一罩覆。一罩覆的概念在微影已為大家所習知,及其包 括罩覆型式,如二位元、替代相位移、及衰減相位移,及 · 不同混合罩覆型式。根據該罩覆圖樣,置放該一罩覆在該 輻射光束内將導致輻射注入該罩覆上的選擇傳送(在該例 為傳送罩覆)或反射(在該例為一反射罩覆)。在一罩覆 例,該支撐結構將一般為一罩覆表,其確保該罩覆可以保 持在入射輻射光束的一期望位置,及其可以相對期望之光| 束移動。 ——可程式化鏡陣列。該一設備的一範例是一矩陣可位址583512 5. Description of the invention (1) The present invention relates to a lithographic manufacturing method including the following steps:-providing a first lithographic projection device;-providing a substrate whose substrate is at least partially covered by a layer of radiation-sensitive material,-providing a A radiation projection beam using a radiation system; ^.-Using a shaping device to give the projection beam a pattern on its cross section; two-projecting the radiation shaped beam onto a target port using a projection system to form a projection Image;-Provide a second lithographic projection device for reference. The π molding device π used here should be widely explained. It can be used as reference to impart an incident radiation beam with a molding cross section, corresponding to a pattern of the target port generated on the substrate. The "light valve π" can also be used. It is used in this content. Generally speaking, the pattern will correspond to a special functional layer of the equipment generated in the target port, such as an integrated circuit or other equipment (shown below). Examples of such molding devices include:-a cover The concept of a cover is well known in lithography, and it includes cover types such as two-bit, alternative phase displacement, and attenuation phase displacement, and · different mixed cover types. According to the cover Pattern, placing the cover in the radiation beam will cause radiation to be injected into the cover either in selective transmission (in this case, transmission cover) or in reflection (in this example, a reflective cover). For example, the support structure will generally be a cover, which ensures that the cover can be maintained at a desired position of the incident radiation beam, and that it can be moved relative to the desired light beam.-Programmable mirror array. Assume One example is a matrix may address

O:\71\71661.ptd 第5頁 及一反射表面。該裝置的基本原 光的位址區域如繞射光,僅留下 光束根據矩陣位址化表面的位址 的矩陣位址可以使用適合的電子 更多資訊可被搜集,例如,從 ,1 9 3,其可在此被結合為參考。 支撐結構可以被使用為一框架或 為固定或可移動。 之範例如US 5, 2 2 9, 8 72, 該支撐結構之範例可被結合為一 需要為固定或可移動。 之其他可,在特定位置,特別將 罩覆表;無論如何,該範例所討 該成型裝置之廣泛内容。 ,例如,在積體電路(I C s )製 置可以產生一對應一 I C的各別層 以印像在一標的瑋(如包含一個 矽晶圓)其已被塗佈予一層輻射 一單晶圓將包含相鄰標的埠之一 影系統持續輻射,一次一個。在 用成型在一罩覆表上,兩個不同 識。在一型式微影投影裝置,每 罩覆圖樣在該標的埠上以輻射; 晶圓步進機。在一替代裝置-一 583512 五、發明說明(2) 化表面具有一黏彈控制層 理是該反射表面反射入射 繞射光在後面;因此,該 成型變得成型化。該需要 裝置來執行。該鏡陣列上 US 5, 296, 891 及US 5,523 在一可程式化鏡陣列,該 表,例如,其可以視需要 ——可程式化LCD陣列。該一結構 其被結合為參考。如上, 框架或表,例如,其可視 為達簡化之目的,此文字 其導向範例涉及一罩覆及 論之一般原理應視為上述 微影投影裝置可被使用 造。在該一例,該成型裝 之電路圖樣,及該圖樣可 或多個晶粒)在一基板上( 靈敏材料(光阻)。一般, 整個網路,其可經由該投 電流裝置,經由一罩覆使 型式糸統之間的區別可辨 一標的埠經由曝露該整個 該一裝置則一般參考如一O: \ 71 \ 71661.ptd page 5 and a reflective surface. The address area of the device's basic primary light, such as diffracted light, leaves only the light beam. The matrix address is based on the address of the matrix addressing surface. The appropriate electronics can be used. More information can be collected, for example, from 1 9 3 , Which can be incorporated herein by reference. The support structure can be used as a frame or as fixed or movable. An example is US 5, 2 2 9, 8 72. The example of the support structure can be combined into one that needs to be fixed or movable. Other possibilities are to cover the surface in a particular location; in any case, this example discusses the broad content of the molding device. For example, in the integrated circuit (IC s) system, a layer corresponding to an IC can be generated for printing on a standard substrate (such as a silicon wafer), which has been coated with a single layer of radiation and a single wafer. Continuously radiate one of the shadow systems containing adjacent target ports, one at a time. On the surface of the cover with molding, the two are different. In a type of lithographic projection device, each cover pattern is radiated on the target port; a wafer stepper. In an alternative device-a 583512 V. Description of the invention (2) The surface has a viscoelastic control layer such that the reflecting surface reflects incident diffraction light behind it; therefore, the molding becomes shaped. This requires a device to perform. US 5, 296, 891 and US 5,523 on the mirror array are in a programmable mirror array. The table, for example, can be a programmable LCD array as needed. This structure is incorporated by reference. As above, the frame or table, for example, can be considered for the purpose of simplification. The general principle of this text's guiding example involving an overlay should be considered as the above-mentioned lithographic projection device can be used. In this example, the molded circuit pattern, and the pattern may be a plurality of dies, on a substrate (sensitive material (photoresist). Generally, the entire network can be passed through the current injection device through a cover The differences between overlying types of systems can be identified by exposing the entire device to the general reference.

O:\71\71661.ptd 第6頁 583512 五、發明說明(3) 般參考為一步進及掃描裝置-每一標的埠則係在一既定參 考方向(該π掃描’'方向)之投影光束下經由程序掃描照射該 罩覆圖樣,同時同步掃描該基板表平行或反平行該方向, 一般,該投影系統將具有一放大係數Μ (—般&lt; 1 ),該速度V 在此該被掃描的基板表將是一係數Μ乘以該被掃描罩覆 表。在此討論關於微影設備的更多資訊可被掃描,從US 6, 046, 792,結合以為參考。 在使用一微影投影裝置之製造程序,一圖樣(如在一罩 覆内)被映像在至少一部份一層輻射靈敏材料(光阻)所覆 蓋之一基板上。在此映像步驟之前,該基板可以經過不同 程序,如塗底層、光阻塗佈及一軟烘烤。在曝光後,該基 板可以受到其他程序,如該影像特徵之後曝光烘烤 (ΡΕΒ )、顯影、一硬燒烤及測量檢查。該等程序之陣列可 接著經過不同程序如蝕刻、離子植入(滲雜)、金屬化、氧 化、化學機械拋光等,所有皆傾向於完成一各別層。若需 要幾個層,接著整體程序,或一其間變數,將於每一新層 重複。最後,一陣列設備將呈現在該基板(晶圓)上。該等 設備則接著經由一如切割或鋸之技術彼此分離,當各別設 備可以安裝在一載體上,連接至該等針腳等。關於該等程 序之其他資訊可以獲致,例如,從”微晶片製造:半導體 程序之一實際導引’•第三版,Peter van Zant所著,O: \ 71 \ 71661.ptd Page 6 583512 5. Description of the invention (3) General reference is a stepping and scanning device-each target port is a projection beam in a predetermined reference direction (the π-scanning direction) The cover pattern is irradiated by a program scan, and the substrate surface is scanned in parallel or anti-parallel direction simultaneously. Generally, the projection system will have a magnification factor M (normally <1), and the speed V should be scanned here. The substrate table will be a coefficient M times the scan mask cover table. More information about lithography equipment discussed here can be scanned from US 6,046,792, incorporated by reference. In the manufacturing process using a lithographic projection device, a pattern (eg, in a cover) is imaged on at least a portion of a substrate covered by a layer of radiation-sensitive material (photoresist). Prior to this imaging step, the substrate can be subjected to different processes, such as coating a base layer, photoresist coating, and a soft baking. After the exposure, the substrate can be subjected to other procedures, such as exposure baking (PEB), development, hard grilling, and measurement inspection of the image features. The array of these procedures can then be subjected to different procedures such as etching, ion implantation (doping), metallization, oxidation, chemical mechanical polishing, etc., all of which tend to complete a separate layer. If several layers are required, then the overall procedure, or an intervening variable, will be repeated for each new layer. Finally, an array device will be presented on the substrate (wafer). The devices are then separated from each other by a technique such as cutting or sawing, when the individual devices can be mounted on a carrier, connected to the pins, etc. Additional information on such procedures can be obtained, for example, from "Microchip Manufacturing: A Practical Guide to One of Semiconductor Programs" • Third Edition, by Peter van Zant,

McGr aw Hill出版公司在1997年出版,書號ISBN 0-07-067250-4,在此結合為參考。 為了達到簡要目的,該投影系統可以參考為π鏡片”,無Published by McGr aw Hill Publishing Company in 1997, ISBN 0-07-067250-4, incorporated herein by reference. For the sake of simplicity, the projection system can be referred to as a π lens.

O:\71\71661.ptd 第7頁 583512O: \ 71 \ 71661.ptd Page 7 583512

五、發明說明(4) 二ί 2 2 Ϊ二货廣’乏解釋為包含不同型式之投影系統,包 ΐ ί ίΐϊ二二反射光學鏡片,及catacHoptnc系統。 =田、;二外二二括根據任何導引、成型或控制該輻射光 起或早 、、兄片。此外,該微影裝置可執行在一個 或多個表於二個或其他多個表被使用以為曝光時。雙步階 微影裝置被描述’例如,在us 5, 9 69, 441及㈣9 8 /4 0 79 1 ,在此結合為參考。 ’ 在微影’有一習知之CD鄰近耦合問題。其是關於一現象 習知如光學鄰近效應。此效應是由該繞射圖樣之既有差異 所導致用於隔離特徵如相較於密度特徵。密度特徵可包括 網圖樣及近間隔週期特徵。例如,該光學鄰近效應導致臨 界尺寸(C D )於密度及許多隔離鏡片在同時列印時。此特別 效應將參考如CD間距異常;該印刷CD是依該間距而定(空 間頻率之反向)在此一具有臨界尺寸之特徵發生。 C D間距異常也可依使用之發光設定而定。原則上,所謂 傳統發光模式已被使用以具有照明輻射的碟狀強度分佈於 投影鏡片之光曈。無論如何,具有映像較小特徵之傾向, 離軸照明模式已變成標準以改良程序窗,如曝光範圍,用 於小特徵。無論如何,CD間距異常對離軸照明模式變得更 差,如環狀照明。V. Description of the invention (4) Two ί 2 2 Ϊ 二 货 广 ’is explained as including different types of projection systems, including ΐ ί ΐϊ 22 reflective optical lenses, and catacHoptnc system. = Tian ,; 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd, 2nd. In addition, the lithographic apparatus may be performed when one or more tables are used for exposure by two or more tables. The two-step lithography device is described ', for example, in US 5, 9 69, 441 and ㈣ 9 8/4 0 79 1, which are incorporated herein by reference. There is a known problem of CD proximity coupling in lithography. It is about a phenomenon known as the optical proximity effect. This effect is caused by an existing difference in the diffraction pattern to isolate features such as compared to density features. Density features can include net patterns and near-interval periodic features. For example, this optical proximity effect results in a critical dimension (CD) in density and many isolating lenses when printed simultaneously. This special effect will refer to, for example, an abnormal CD pitch; the printed CD is dependent on the pitch (inverse of the spatial frequency) where a feature with a critical dimension occurs. The abnormality of the CD distance can also depend on the lighting settings used. In principle, the so-called traditional light emission mode has been used to distribute the intensity of the dish-like intensity of the illumination radiation to the light beam of the projection lens. However, with the tendency to have smaller features, the off-axis lighting mode has become standard to improve the program window, such as the exposure range, for small features. In any case, abnormal CD spacing becomes worse for off-axis lighting patterns, such as ring lighting.

一種減緩CD間距異常的解答已經由偏離製版照相機之不 同特徵來施於光學鄰近修正(OPC)。根據一種偏離方式, 該特徵被偏離,例如,經由罩覆製版照相機之更多隔離One solution to mitigate CD pitch anomalies has been applied to optical proximity correction (OPC) by varying characteristics from plate-making cameras. According to a deviation method, the feature is deviated, for example, by more isolation of the cover plate-making camera

583512 五、發明說明(5) 線,甚至比較厚,於基板上之影像,它們以相同橫向尺寸 印刷如密度線般。在另一型式偏離,一終端修正被施於以 使得該等線,不論隔離或密度,皆以正確長度印刷。無論 如何,在較小間距及具有離軸照明,該C D隨著間距之功能 改變越大,及更多偏離線已被施於及該等偏離變得更複 雜。OPC被討論,例如,在SPIE 第40 0 0冊,1015-1023 頁,π自動平行光學鄰近修正及驗證系統π ,由Wat an abe等 所著。其他更佳地,先近軟體算法及非常複雜罩覆皆是 OPC所需的。此大幅地增加成本。在不同微影投影裝置被 使用於一包含OPC之微影製造程序步驟之例(如使甩具有非 機器特定偏移圖樣之製版照相機),該等微影頭投影裝置 應接著具有實質較小CD間距異常以用於有效之OPC。該一 CD間距異的耦合一般是為了 一選定CD間距用於選擇的特徵 型式(密集或隔離)。為了間距之特徵而非該選定之一,該 耦合可以是非常貧乏或甚至失去容忍度。 本發明之一目的是減輕上述問題。此和其他目的可以根 據在前言所特定之本發明的微影製造程序來獲致,其特徵 是: 從輻射靈敏層之投射影像獲致第一微影傳送功能之第一 資訊; 使用一第二微影投影裝置獲致第二微影傳送功能參考之 第二資訊; 計算第一資訊和第二資訊間之差異; 計算第一微影投影裝置的機器設定的改變施於至少該機583512 V. Description of the invention (5) The lines are even thicker. The images on the substrate are printed with the same horizontal dimension as density lines. In another type of deviation, a terminal correction is applied such that the lines, regardless of isolation or density, are printed at the correct length. Regardless, at smaller pitches and with off-axis lighting, the CD's functional change with pitch is greater, and more deviation lines have been applied and such deviations have become more complicated. OPC is discussed, for example, in the SPIE Book 40,000, pages 1015-1023, π automatic parallel optical proximity correction and verification system π, by Wat an abe et al. Better yet, advanced software algorithms and very complex overlays are needed for OPC. This significantly increases costs. In the case where different lithographic projection devices are used in a lithographic manufacturing process step that includes OPC (such as a plate-making camera with a non-machine specific offset pattern), these lithographic head projection devices should then have a substantially smaller CD The pitch is abnormal for effective OPC. This coupling with a different CD pitch is generally for a selected feature (dense or isolated) of the selected CD pitch. For the characteristics of spacing rather than one of the choices, the coupling can be very poor or even lose tolerance. It is an object of the present invention to alleviate the above problems. This and other objects can be achieved according to the lithographic manufacturing process of the present invention specified in the preamble, which is characterized by: obtaining first information of a first lithographic transmission function from a projection image of a radiation sensitive layer; using a second lithographic The projection device obtains the second information referenced by the second lithographic transmission function; calculates the difference between the first information and the second information; calculates the change in the machine settings of the first lithographic projection device to at least the machine

O:\71\71661.ptd 第9頁 583512 五、發明說明(6) 器設定之一以最小化該差異;及 施於機器設定之計算的改變。 習知的是該投影系統的影像特徵可經由光學傳送功能 (OTF)來特徵化(請參閱例如J. C. Dainty在1 9 74年學院期 刊所發表之π影像科學”)。此功能描述經由投影系統之隔 離頻率組件的傳送。該被印像之圖樣特徵一特定空間頻率 頻譜,及此具有OTF的頻譜之產品產生該圖樣之影像的間 隔頻率頻譜。一般,該OTF是一減少功能用以增加空間頻 率。結果,一隔離特徵被從一密度特徵不同地映像(一隔 離特徵之空間頻率頻譜包含相較於該發生在密集特徵之頻 譜之實質較低空間頻率)。相似地,一微影製造程序步驟 可以經由一微影傳送功能所特徵化,參閱如” LTFn。該LTF 描述從該圖樣之該空間頻率之傳送,以被印刷,至此圖 樣,如被印刷。 很清楚地,如一LTF並非獨特。例如,該基板的程序已 受到先前和後面曝光(如上述),可顯著地影響一印刷圖樣 之空間頻率内容。而且,一程序運作在一單微影投影裝置 可以導致不同LTF。此是由於,假定一特定被映像圖樣, 機器設定如,例如,曝光劑量及照明設定可以顯著影響印 刷圖樣。無法否認地,不同微影投影裝置,即使是相同型 式,對於一特定程序步驟將具有不同LTF。此可以經由機 器設定之殘留校準誤差及各別不同微影投影裝置的鏡片之 殘留像差誤差所導致。而且,不同年代或型式之微影投影 裝置,雖然作動在相同影像規格,可產生不同LTF及因O: \ 71 \ 71661.ptd Page 9 583512 V. Description of the Invention (6) One of the device settings to minimize the difference; and the change in calculations applied to the machine settings. It is known that the image characteristics of the projection system can be characterized by an optical transfer function (OTF) (see, for example, π image science published by JC Dainty in the College Journal, 1974). This function description is provided by the projection system. Isolate the transmission of frequency components. The printed pattern features a specific spatial frequency spectrum, and the frequency spectrum of the image of the pattern produced by the product with OTF spectrum. Generally, the OTF is a reduction function to increase the spatial frequency As a result, an isolated feature is mapped differently from a density feature (the spatial frequency spectrum of an isolated feature contains a substantially lower spatial frequency than the frequency spectrum that occurred in the dense feature). Similarly, a lithography manufacturing process step Can be characterized by a lithographic transfer function, see eg "LTFn. The LTF describes the transmission of the spatial frequency from the pattern to be printed, and so far the pattern is to be printed. It is clear that LTF is not unique. For example, the substrate's program has been subjected to previous and subsequent exposures (as described above), which can significantly affect the spatial frequency content of a printed pattern. Moreover, a program operating on a single lithographic projection device can lead to different LTFs. This is because, assuming a specific imaged pattern, machine settings such as, for example, exposure dose and lighting settings can significantly affect the printed pattern. Undeniably, different lithographic projection devices, even of the same type, will have different LTFs for a particular process step. This can be caused by the residual calibration error set by the machine and the residual aberration error of the lenses of different lithographic projection devices. Moreover, lithographic projection devices of different ages or types, although operating in the same image specifications, can produce different LTFs and factors

O:\71\71661.ptd 第10頁 583512 五、發明說明(7) 此,不同印刷圖樣由於,例如,像差誤差其是各別(第一 和第二)投影系統的標稱設計之部份。因為一 LTF是在經由 微影特徵誤差之可觀察微影的實際内,耦合LTF可以實質 地經由耦合該微影特徵誤差之間距獨立性獲得實現,例 如,CD間距差異。 其不須瞭解第一LTF及第二LTF於所有間距。為達耦合目: 的,第一LTF的足夠第一資訊可以是發生在印刷特徵之任 · 何微影誤差的大小,其中該誤差之大小是依該特徵之特徵 間距而定。該誤差可以,例如,使用商用微影模擬軟體測 量或言十算,如 Prolit hTM,So 1 i d - CTM 或 L i t h oC r u i s e rTM 〇 例 如,既有特定(重要)被映像圖樣特徵,既有該投影系統之I 像差,既有資料考量基板之輻射靈敏層,及既有輻射光束 特性如輻射能源及波長,關於特徵特定誤差之大小的預測 也可以用模擬程式完成。 相似地,第二資訊(例如)可以被測量或計算。該誤差大 小的差異可以接著針對標的間距來決定。 經由導入耦合該機器設定之小變化,此已習知以影響特 徵誤差及為幾個間距經由計算特徵誤差之對應改變,係數 量化特徵誤差大小和該機器設定改變間關係可以被建立。 該等係數接著也建立該機器設定改變與所標的間距之特徵 誤差和參考特徵誤差間之不同。 若標的間距之數目等於可以耦合之機器設定改變數目,j 上述計算導致一組等式其中該等式數目等於未知機器設定 改變之數目(需用以耦合)。該一組等式可以以所有該等間O: \ 71 \ 71661.ptd Page 10 583512 V. Description of the invention (7) Therefore, due to, for example, aberration errors, different printed patterns are part of the nominal design of each (first and second) projection system Serving. Because an LTF is within the reality of observable lithography via lithographic feature errors, coupling LTFs can be achieved substantially by coupling the lithographic feature errors with distance independence, such as the difference in CD spacing. It is not necessary to understand the first LTF and the second LTF at all pitches. For the purpose of coupling, the sufficient first information of the first LTF may be any lithographic error that occurs in the printing feature, where the magnitude of the error is determined by the feature spacing of the feature. This error can be measured, for example, using commercially available lithographic simulation software, such as Prolit hTM, So 1 id-CTM or Lith oC ruise rTM. For example, if there are specific (important) imaged pattern features, both the The I-aberration of the projection system, the existing data considers the radiation sensitive layer of the substrate, and the existing radiation beam characteristics such as radiant energy and wavelength, and the prediction of the magnitude of the specific error of the feature can also be completed using simulation programs. Similarly, the second information can be measured or calculated, for example. This difference in error magnitude can then be determined for the target spacing. Coupling small changes in the machine settings through the introduction, it is known to affect the characteristic error and calculate the corresponding changes in the feature errors for several intervals. The relationship between the coefficient quantified feature error size and the machine setting changes can be established. These coefficients then also establish the difference between the characteristic error and the reference characteristic error of the machine setting change from the target spacing. If the number of target intervals equals the number of machine setting changes that can be coupled, j The above calculation results in a set of equations where the number of equations equals the number of unknown machine setting changes (required for coupling). The set of equations can be

O:\71\71661.ptd 第11頁 583512 五、發明說明(8) 距之特徵誤 距數目超過 一加權最小 距之特 以理想 且,經 距誤差 器間所 本發 度結構 現在一 明Σ向 可用之 原理上 之重要 本發 耦合所 庫如依 組,如 根據 光之可 一特定 徵,其 圍,該 徵誤 化依 由將 間搞 發生 明之 而言 印刷 内及 機器 選擇 特徵 明之 補償 特定 成型 本發 行性 範圍 中映 導致 差和 使用 方形 差差 特徵 此方 合如 般可 一層 (小間距) 特徵内。 向外設定 設定改變 兩個較佳 獲致 另一 之間 微影 型式 明的 〇該 間距 像經 非理 參考特徵誤差間之零差異來解決。若該間 之機器設定數目,一可以替代地經由例如 最小化(一最小方形組件)來最小化該等間 異。該一最小化將產生一組機器設定改變 誤差而定之間距的耦合的標的方式。而 法所發現之該組機器設定改變施予,該間 發生在一特定微影製造程序使用之不同機 被改良。 面是特別致使C D鄰近耦合。習 該曝光能量可以使用以改 對隔離結構而言,兩個曝 可被使用以影響該印刷CD (曝光能量及例如Σ向外) 間距及為發生在該等兩個 實質完全CD鄰近耦合。 層面是該等係數將量化機器設定改變及由 距獨立誤差差異間關係也可被儲存在資料 製造程序步驟資料而定之係數之組或群 ,該對應照明和N A設定。 另一層面CD鄰近耦合被理想化說明雙重曝 成型則被區隔為兩個副圖樣,每個皆特徵 。一個範圍間距包含間距典型用於密度特 由兩個光束干擾所導致。對此間距之範 想CD鄰近耦合之主要點是一曝光能量誤 對密 其出 及照 兩個 可以 間距處發生 知的是 變CD於 光能量 。既有 ,一個O: \ 71 \ 71661.ptd Page 11 583512 V. Description of the invention (8) The number of characteristic distance errors is more than a weighted minimum distance. Ideally, the original structure of the distance error device is now clear. To the principle which is available in principle, the coupling of the current library is based on the group, such as according to the specific characteristics of the light, and the perimeter of the characteristics, and the errors are based on the specific characteristics of the printing and machine selection. Molded in the release range, the difference caused by the difference and the use of the square difference feature can be combined within a single layer (small pitch) feature. The external setting is changed between the two better results and the other is the lithographic pattern. The interval is resolved by irrational reference feature error. If the number of machines in the room is set, one can instead minimize the differences by, for example, minimizing (a minimum square component). This minimization will produce a set of machine-targeted ways of changing the coupling depending on the error. Whereas the set of machine settings found by the law was changed, the different machines used in a particular lithographic manufacturing process were modified. The plane is particularly caused by the close coupling of CD. The exposure energy can be used to modify the isolation structure. Two exposures can be used to affect the printed CD (exposure energy and, for example, Σ outward) spacing and to occur in close coupling between the two substantially complete CDs. The level is the group or group of coefficients that will quantify the machine setting changes and the relationship between the independent error differences can also be stored in the data manufacturing process step data, which corresponds to the lighting and NA settings. The CD coupling on the other level is idealized, indicating that the double exposure molding is separated into two sub-patterns, each of which is characteristic. A range pitch contains a pitch typically used for density that is caused by the interference of two beams. The norm for this distance. The main point of close coupling of CD is that the exposure energy is misaligned and the two are out of the distance. It is known that CD is changed to light energy. Existing, one

O:\71\71661.ptd 第12頁 583512 五、發明說明(9) 差。耦合可以經由一能量偏移獲致,其導致C D相對間距曲 線的一偏移。該等間距之其他範圍包含典型用於隔離特徵 之間距。在此,映像係由三光束干擾所導致。因此更多參 數扮演一角色:聚焦及因此球體像差、凝聚及曝光能量。 輕合則較佳可經由一曝光劑量偏移產生C D與間距區線的一 偏移,及經由一 Σ設定改變來產生CD相對間距曲線之一偏: 移(旋轉)。此方法致使絕佳之C D鄰近耦合於一大範圍間 , 距。 根據本發明的另一層面,其提供一微影投影裝置包含: - 一輻射系統用以提供輻射的一投射光束; -一支撐系統用以支撐成型裝置,該成型裝置作用以根據 ¥ 一期望圖樣成型該投影光束; ——基板表用以保持一基板; -一投影系統用以投影該成型光束在該基板之一標的埠 上; - -機器設定可施於至少曝光能量設定集照明設定之一; 其特徵為經由另包含: ‘ 裝置用以改變機器設定; 一處理器用以計算 - 一第一微影傳送功能之第一資訊及一第二微影傳送功能 上之第二資訊間之差異; -機器設定之一改變被施於至少該機器設定之一以最小化 該差異。 雖然特定參考也可根據使用本發明在製造1C的裝置來達O: \ 71 \ 71661.ptd Page 12 583512 5. Description of the invention (9) Poor. Coupling can be achieved via an energy offset, which results in an offset of the CD from the pitch curve. Other ranges of these spacings include spacings typically used to isolate features. Here, the image is caused by three-beam interference. Therefore more parameters play a role: focus and therefore spherical aberration, condensation and exposure energy. For light closing, it is preferable to generate an offset between CD and the pitch zone line through an exposure dose offset, and to generate a deviation of the CD relative pitch curve through a Σ setting change: shift (rotation). This method results in excellent CD coupling close to a large range. According to another aspect of the present invention, it provides a lithographic projection device including:-a radiation system for providing a projected beam of radiation;-a support system for supporting a molding device that functions to provide a desired pattern according to a desired pattern Shaping the projection beam;-a substrate table for holding a substrate;-a projection system for projecting the shaping beam on a target port of the substrate;--machine settings can be applied to at least one of the exposure energy settings and lighting settings It is characterized by further including: 'the device is used to change the machine settings; a processor is used to calculate-the difference between the first information of a first lithographic transmission function and the second information of a second lithographic transmission function; -A change in one of the machine settings is applied to at least one of the machine settings to minimize the difference. Although specific references can also be reached based on the use of the present invention in the manufacture of 1C devices

O:\71\71661.ptd 第13頁 583512 五、發明說明(ίο) 成,其應予以說明式地瞭解該一裝置具有其他可能之應 用。例如,其可以使用在製造積體光學系統,導引及檢測 圖樣於磁區間記憶體,液晶顯示板,薄膜磁頭等。該技藝 純熟之技工將較喜歡,在如替代應用之内容,任何其它使 用在本文之π製板照相機π ,π晶圓π或π晶粒π應考量為經由 傳統的”罩覆π ,&quot;基板&quot;及π標的埠”各別地來替代。 在本文件,該π輻射π及π光束π被使用以包含所有型式電 磁輻射,包括紫外線(如具有一 3 6 5,2 4 8,1 9 3,1 5 7或1 2 6 nm的波長)及EUV(超強紫外線,如具有一 5-20 nm範圍波 長)。 本發明之具體例將予以描述,僅經由範例,參考所附圖 式其中: 圖1描述一根據本發明的一具體例之微影投影裝置; 圖2展示C D間距異常之圖。沿著該C D的垂直軸,如印刷 般,則為n m,及沿著所給予之間距之水平軸,亦為n m。 圖3展示CD間距異常及一參考用CD間距異常間差異的 圖。沿著該C D的垂直軸,如印刷般,則為n m,及沿著所給 予之間距之水平轴,亦為n m。 圖4展示CD間距異常的一圖展示一球體像差導致非耦合 的效應。沿著該CD的垂直軸,如印刷般,則為nm,及沿著 所給予之間距之水平軸,亦為n m。 圖5展示C D間距異常及一參考用C D間距異常間差異的 圖,及其展示機器設定改變之效應。沿著該CD的垂直軸, 如印刷般,則為n m,及沿著所給予之間距之水平軸,亦為O: \ 71 \ 71661.ptd Page 13 583512 5. The description of the invention (ίο) should explain declaratively that the device has other possible applications. For example, it can be used in manufacturing integrated optical systems, guiding and detecting patterns in magnetic interval memory, liquid crystal display panels, and thin-film magnetic heads. Skilled artisans will prefer, such as the content of alternative applications, any other π plate camera π used in this article, π wafer π or π die π should be considered through the traditional "cover π" Substrate &quot; and π-standard ports "are replaced separately. In this document, the π radiation π and π beam π are used to include all types of electromagnetic radiation, including ultraviolet rays (such as having a wavelength of 3 6 5, 2 4 8, 1 9 3, 1 5 7 or 1 2 6 nm). And EUV (ultra-high ultraviolet, such as having a wavelength in the 5-20 nm range). A specific example of the present invention will be described, by way of example only, with reference to the accompanying drawings, wherein: FIG. 1 illustrates a lithographic projection device according to a specific example of the present invention; It is n m along the vertical axis of this CD, as in printing, and n m along the horizontal axis of the given pitch. Figure 3 shows the difference between the CD pitch anomaly and a reference CD pitch anomaly. It is n m along the vertical axis of this CD, as in printing, and n m along the horizontal axis of the given pitch. Figure 4 shows a graph of anomalous CD spacing showing the effects of a spherical aberration leading to non-coupling. Along the vertical axis of the CD, as in printing, it is nm, and along the horizontal axis of the given pitch, it is also n m. Figure 5 shows a graph of the difference between the CD anomaly and a reference CD anomaly, and the effect of changing machine settings. Along the vertical axis of the CD, as in printing, it is n m, and along the horizontal axis of the given distance, it is also

O:\71\71661.ptd 第14頁 583512 五、發明說明(11) n m ° 圖6展示說明使用雙曝光球體像差導致非耦合之效應的 CD間距異常的一圖。沿著該CD的垂直軸,如印刷般,則為 n m,及沿著所給予之間距之水平轴,亦為n m。 在該等圖,對應參考符號標示對應組件。 具體例1 圖1圖解說明一根據本發明之一特別具體例的微影投影 裝置。該裝置包含: •一輻射系統E X,I L,用以供給幸畐射的一投影光束P B (如 UV輻射)。在此特別例,該輻射系統也可包含一輻射源 LA ; •第一標的桌(光罩桌)MT提供一光罩保持器用以保持光罩 MA(如一光罩(reticle)),以及連接至第一定位裝置用以 精確地相對項目P L定位該光罩; •一第二標的桌(基板桌)WT提供予一基板保持器用以保持 一基板W (如一光阻塗佈矽晶圓),及連接至第二定位裝置 用於精確地相對項目P L定位該基板; •一投影系統(·’鏡片”)PL(如一石英及/或CaF2鏡片系統或 一 catadioptric系統包含由該等元件所製成之鏡片元件) 用以映像該罩覆MA之照射埠在該基板W的一標的埠C上(如 包含一個或多個晶粒)。 如此所述,該裝置是一傳送型式(如具有一傳送罩覆)。 無論如何,一般,其可以是一反射型式,例如(具有一反 射罩覆)。替代地,該裝置可使用另一種型式成型裝置,O: \ 71 \ 71661.ptd Page 14 583512 V. Description of the invention (11) n m ° Figure 6 shows a diagram illustrating the abnormality of the CD spacing caused by the non-coupling effect caused by the use of double exposure spherical aberration. It is n m along the vertical axis of the CD, as in printing, and n m along the horizontal axis of the given pitch. In these figures, corresponding reference symbols indicate corresponding components. Specific Example 1 FIG. 1 illustrates a lithographic projection apparatus according to a specific example of the present invention. The device comprises: a radiation system E X, I L for supplying a projection beam P B (eg UV radiation). In this particular example, the radiation system may also include a radiation source LA; the first target table (mask table) MT provides a mask holder for holding the mask MA (such as a reticle), and is connected to A first positioning device for accurately positioning the mask relative to the project PL; a second target table (substrate table) WT provided to a substrate holder for holding a substrate W (such as a photoresist-coated silicon wafer), and Connected to a second positioning device for accurately positioning the substrate relative to the item PL; • a projection system (· 'lens') PL (such as a quartz and / or CaF2 lens system or a catadioptric system containing components made of these elements) Lens element) is used to image the irradiation port of the cover MA on a standard port C of the substrate W (if it contains one or more dies). As described above, the device is a transmission type (if it has a transmission cover) Anyway, in general, it can be a reflective type, for example (with a reflective cover). Alternatively, the device can use another type of molding device,

O:\71\71661.ptd 第15頁 583512 五、發明說明(12) 如上述之一種可程式化鏡陣列。 該源LA(如一 UV excimer雷射)產生一輻射光束。此光束 被傳送入一照明系統(照明器)I L,為直接或在具有橫向調 整裝置,如一光束擴充器Ex。該照明器I L可包含相鄰裝置 AM用以設定光束内強度分佈之外向及/或内向徑向内容(一 般各別參考為σ向外及σ向内)。此外,其將一般包含不 同其他組件,如積分器I Ν及一電容器C 0。依此方法,該入 射該罩覆ΜΑ之光束ΡΒ具有在橫剖面之均一及強度分佈。 其應瞭解關於圖1該源LA可以在微影投影裝置之外殼(通 常是當源L Α為一水銀燈炮),但其也可以與微影投影裝置 遙控,該輻射光束所產生係導入該裝置(如具有適切導引 鏡之協助);後者情境則通常是當源L A為一 e X c i m e r雷射源 時。本發明及申請專利範圍包含兩種情境。 該光束PB結果截斷該罩覆MA,其係保持在一罩覆表MT 上。具有橫斷該罩覆MA,該光束PB通過該鏡片PL,其聚焦 該光束PB在基板W的一標的埠C上。具有第二定位裝置之協 助(及磁鐵間測量裝置I F ),該基板表WT可以精確地移動, 如定位不同標的埠C在光束PB的路徑内。相似地,第一定 位裝置可以使用以精確定位罩覆Μ A相對於光束P B的路徑, 如在從一罩覆圖館之該罩覆MA的機械檢索之後。一般,標 的表MT之移動,WT將在長行程模組(過程定位)及一短行程 模組(微細定位)之協助下實現,其不在圖1之描述說明 内。無論如何,在一晶圓步進器之例(相反於一步進掃描 裝置)該罩覆表MT可接著連接至一短行程致動器或可被固O: \ 71 \ 71661.ptd Page 15 583512 V. Description of the invention (12) A programmable mirror array as described above. The source LA (such as a UV excimer laser) generates a radiation beam. This beam is transmitted into a lighting system (illuminator) IL, either directly or in the presence of a lateral adjustment device, such as a beam expander Ex. The illuminator IL may include an adjacent device AM for setting the outward and / or inward radial content of the intensity distribution in the beam (generally, the reference is σ outward and σ inward). In addition, it will generally include different other components, such as an integrator IN and a capacitor C 0. In this way, the light beam PB incident on the cover MA has a uniformity and intensity distribution in the cross section. It should be understood that regarding FIG. 1, the source LA can be in the housing of the lithographic projection device (usually when the source L A is a mercury lamp cannon), but it can also be remotely controlled with the lithographic projection device. The radiation beam is introduced into the device (If assisted by a suitable guide); the latter scenario is usually when the source LA is an e X cimer laser source. The scope of the present invention and patent application includes two scenarios. As a result, the light beam PB intercepts the cover MA, which is held on a cover surface MT. It has the cover MA traversed, the light beam PB passes through the lens PL, and it focuses the light beam PB on a standard port C of the substrate W. With the assistance of the second positioning device (and the inter-magnet measuring device I F), the substrate table WT can be accurately moved, such as positioning different port C in the path of the beam PB. Similarly, the first positioning device can be used to precisely position the path of the mask MA relative to the beam P B, such as after a mechanical retrieval of the mask MA from a mask library. Generally, the movement of the target table MT will be realized with the help of a long-stroke module (process positioning) and a short-stroke module (fine positioning), which are not included in the description of Figure 1. In any case, in the case of a wafer stepper (as opposed to a step-scan device), the cover MT can then be connected to a short-stroke actuator or can be fixed

O:\71\71661.ptd 第16頁 583512O: \ 71 \ 71661.ptd Page 16 583512

五、發明說明(13) 定。 該描述之裝置可用於兩種不同模式· 1,在步進模式’該罩覆表MT是基本^持5. Description of the invention (13). The device described can be used in two different modes. 1. In stepping mode, the cover MT is basic.

罩覆影像被投影在一事内(如一單&quot;閃”)於U疋,及一整個 該基板表WT則接著位移於X及/或y方向以;一〜標的埠C上。 可經由該光束P B照射; 吏得不同標的埠CThe overlay image is projected in a single event (such as a single &quot; flash &quot;) on U 及, and an entire substrate table WT is then shifted in the X and / or y direction to a target port C. It can pass through the beam PB exposure; get different port C

2 ·在掃描模式,基本上施予相同情境,除一 不曝光在一單,,閃”内。替代地,該罩覆表&quot;二既有標的C 可移動的(所謂的”掃描方向,,如y方向)具有一在既定方向是 得該投影光束p B被導致以掃描一罩覆影像;、纟士速度v,以使 表WT則同步移動於速度v = Mv的相同或相反方:果,該基板 鏡片PL的大小(典型上M = 1/4或1/5)。在此方^其中Μ是 標的埠C可被曝光,無需具有解析之妥協。工一比較大 在圖2典型CD間距異常圖被圖示。沿著垂直 印刷CD及間距被各別描述。該等圖是呈現 7 h平軸該2 · In the scan mode, basically the same situation is given, except one is not exposed in a single, flash. "Alternatively, the cover table" quotes two existing C-movable (so-called) scanning directions, (Such as the y direction) has a projection beam p B caused to scan an overlay image in a given direction; and the speed v of the warrior, so that the table WT moves synchronously at the same or opposite speed v = Mv: As a result, the size of the substrate lens PL (typically M = 1/4 or 1/5). Here, where M is the target port C, it can be exposed without any compromise of resolution. The first is relatively large. The typical CD pitch anomaly diagram in Figure 2 is illustrated. CDs and pitches printed along the vertical are described separately. The figures are presented on a 7 h flat axis.

徵之一微影製造程序:輻射光束的波長λ是24彳資料所特 位凹孔是ΝΑ = 0· 7,該σ向外及σ向内設定則各 ^ ’該數 〇·55及該標稱CD為130 nm。圖21表示第二微旦〈弘疋〇·8及 CD間距異常特性。此裝置在此簡單而言是,,參又I衫,置之 有被測量之其他第一微影投影裝置將簡單參考如,具” 1所 圖22表示一工具之CD間距異常。施於該工具之工具i ° 一小改變具有改變平行垂直轴之圖22的效應,劑f之 戶Γ票Γ,該⑶鄰近耗合,為nm單位及對生應由圖前21 頭 和22,如間距的一功能所畫。該曝光劑量調整具有相同轉One of the characteristics of the lithography manufacturing process: the wavelength λ of the radiation beam is 24, and the special concave hole is NA = 0 · 7, and the σ outward and σ inward settings are each ^ 'the number 0.55 and the standard The CD is called 130 nm. FIG. 21 shows the second microdensity <Hiroshita 0.8 and CD pitch abnormality characteristics. For simplicity, this device is a reference to the I-shirt, with the other first lithographic projection device being measured. It will simply refer to, for example, Figure 1. Figure 22 shows that the CD spacing of a tool is abnormal. The tool i ° a small change has the effect of changing the parallel vertical axis of Figure 22, the agent f of the house Γ vote Γ, the ⑶ adjacent consumption, is the nm unit and the opposite should be from the first 21 and 22 in the figure, such as the spacing A function drawn. The exposure dose adjustment has the same rotation

583512 五、發明說明(14) 換效應於圖4的圖上,如箭頭23所示,及可以使用以傳送 該CD鄰近耦合至零奈米位準(如圖4之水平軸)。為改良CD 鄰近耦合,該一改變之效應,例如,σ向外之工具設定可 被使用。此效應在圖2被說明,及良好鄰近構成一沿著圖 22的部份之點25處之一旋轉24其中該間距大於一間距Pr : Pi·二 λ/ΝΑ (1) 該間距Pr在圖2是標示為間距2 6。因此,一 σ向外調整 導致CD間距異常圖如圖2的圖221及222。CD間距異常之σ 向外調整的對應效應則如圖3所示,及再次涉及該旋轉導 致CD鄰近耦合圖3 2和3 3。很清楚地一個結合的σ向外改變 及曝光劑量改變導致轉換圖3 3為圖3的零奈米位準理想化 該C D鄰近搞合。 在另一具體例,該圖樣則分為兩個副圖樣,一個副圖樣 實質包含比Pr小的間距特徵,及其他副圖樣實質包含大於 P r的間距特徵。該關於CD鄰近耦合之圖樣分離的優點(及 探討雙曝光之可行性)變得清楚於例如投影系統的殘留較 高順序球體像差之呈現的效應被考量時。圖4展示前述具 體例所述微影製造程序之CD間距異常圖,其中該參考工具 不具有球體像差(圖4 1 ),及其中該工具的投影系統(其也 是被耦合)存在由Zer n ike係數Z 16 (圖42)所特徵之球體像 差的0.05波長。圖5展示計算的一詳細圖,導致CD鄰近耦 合,參閱圖5 1。對密集間距而言(間距&lt; P r ),該耦合是在 + 1及-1 nm間,無論如何,對隔離間距而言(&gt;Pr),一非耦 合發生在上至+ 3 nm。因為使用雙重曝光,其現在可以改583512 5. Description of the invention (14) The switching effect is shown in the graph of Fig. 4, as shown by arrow 23, and can be used to transfer the CD to the near-nano level (see the horizontal axis of Fig. 4). To improve CD proximity coupling, the effect of this change, for example, σ outward tool settings can be used. This effect is illustrated in FIG. 2 and a good neighbor rotates 24 at one of the points 25 along the part of FIG. 22 where the pitch is greater than a pitch Pr: Pi · IIλ / ΝΑ (1) The pitch Pr is shown in the figure 2 is marked as a pitch of 2 6. Therefore, a σ outward adjustment results in abnormal CD pitch diagrams as shown in Figures 221 and 222 of Figure 2. The corresponding effect of the σ outward adjustment of the CD spacing anomaly is shown in Fig. 3, and the rotation leads to the proximity coupling of CDs in Figs. 3 2 and 3 3 again. It is clear that a combined σ outward change and exposure dose change result in the conversion. Figure 3 shows the idealization of the zero-nanometer level in Figure 3. In another specific example, the pattern is divided into two sub-patterns, one sub-pattern substantially contains a pitch feature smaller than Pr, and the other sub-patterns substantially contain a pitch feature larger than Pr. The advantages of pattern separation with respect to the proximity coupling of CDs (and the feasibility of exploring double exposures) become clear when, for example, the effects of the presentation of higher order residual spherical aberrations of the projection system are considered. Figure 4 shows the abnormal CD spacing diagram of the lithography manufacturing process described in the previous specific example, where the reference tool does not have spherical aberration (Figure 41), and the projection system of the tool (which is also coupled) exists by Zern 0.05 wavelength of spherical aberration characterized by ike coefficient Z 16 (Figure 42). Figure 5 shows a detailed diagram of the calculation, resulting in CD proximity coupling, see Figure 51. For dense pitches (pitch &lt; P r), the coupling is between +1 and -1 nm, however, for isolation pitches (& Pr), a non-coupling occurs up to + 3 nm. Because of double exposure, it can now be changed

O:\71\71661.ptd 第18頁 583512 五、發明說明(15) 良獨立於已經獲得之〉Pr之間距的CD鄰近耦合及對小於Pr 之間距的足夠CD鄰近耦合。此示於圖5,其中一結合曝光 劑量(由箭頭5 2所標示)及σ向外調整(由箭頭5 3所標示)被 使用為具有間距〉Pr之副圖樣理想化該CD鄰近耦合。 該為雙重曝光影像之結果之整體CD鄰近耦合則如圖6所' 示:一優於+及-1 n m的搞合被獲致於發生在該圖樣之間距-的完整範圍。 - 本發明之特定具體例以已如上述,請明瞭本發明也可以 非如上述般應用。該等說明並非用以限制本發明。O: \ 71 \ 71661.ptd Page 18 583512 V. Description of the invention (15) It is well independent of the CD proximity coupling that has been obtained> Pr distance and sufficient CD proximity coupling that is smaller than the Pr distance. This is shown in Figure 5, where a combination of exposure dose (indicated by arrow 52) and σ outward adjustment (indicated by arrow 53) is used as a secondary pattern with a pitch> Pr to idealize the CD proximity coupling. The overall CD proximity coupling, which is the result of the double-exposure image, is shown in Fig. 6: a fit that is better than + and -1 n m is obtained due to the complete range of the distance-between the patterns. -The specific examples of the present invention have been described above. Please understand that the present invention can also be applied as described above. These descriptions are not intended to limit the invention.

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Claims (1)

583512 .s ….... :.㈣號 90113618_^年月/上曰泰窃 1 . 一種微影製造方法,包含下列步驟: -提供一第一微影投影裝置; -提供一基板,至少部份由一層輻射靈敏材料所覆蓋之基 板; -提供一使用一輻射系統的輻射投影光束; -使用一成型裝置,以賦予該投影光束一圖樣在其橫截 面; -投影該輻射的成型光束在使用一投影系統的標的部分 上,以獲得一投射影像; -提供一第二微影投影裝置以為參考; 其特徵在於: 從輻射靈敏層内投影影像,以獲得一第一資訊於一第 一微影傳送功能上; 使用該第二微影投影裝置,以獲得第二資訊用以參考 於第二微影傳送功能上; 計算第一資訊及第二資訊間差異; 計算第一微影投影裝置之機器設定的改變,以將至少 機器設定之一施予以最小化該差異;及 使用機器設定之計算的改變。 2. 如申請專利範圍第1項之微影製造方法,其中該計算 機器設定之改變包含計算多個量化該差異,與影響該差異 之至少第一微影投影裝置的機器設定之一間關係的係數。 3. 如申請專利範圍第2項之微影製造方法,其中該係數 包含用於至少輻射系統及/或投影系統的不同照明設定之583512 .s… ....: .㈣ 号 90113618_ ^ 月 月 上 上 泰 吐 1. A lithographic manufacturing method, comprising the following steps:-providing a first lithographic projection device;-providing a substrate, at least part A substrate covered by a layer of radiation-sensitive material;-providing a radiation projection beam using a radiation system;-using a shaping device to give the projection beam a pattern on its cross-section;-the shaped beam projecting the radiation is in use Providing a projection image on the target portion of a projection system;-providing a second lithographic projection device as a reference; characterized by: projecting an image from a radiation-sensitive layer to obtain first information on a first lithography In the transmission function; using the second lithographic projection device to obtain the second information for reference in the second lithographic transmission function; calculating the difference between the first information and the second information; calculating the machine of the first lithographic projection device Changes in settings to minimize at least one of the machine settings; and changes in calculations using machine settings. 2. The lithographic manufacturing method as described in the first item of the patent application scope, wherein the change of the computer setting includes calculating a plurality of quantifications of the difference and the relationship between at least one of the machine settings of the first lithographic projection device that affects the difference. coefficient. 3. The lithographic manufacturing method according to item 2 of the scope of patent application, wherein the coefficient includes the different lighting settings for at least the radiation system and / or the projection system. O:\71\71661-921212.ptc 第21頁 583512 _案號 90113618_p 年 月 /二曰__ 六、申請專利範圍 一的多個係數群組;及被投影圖樣的不同特徵。 4. 如申請專利範圍第1及2項之微影製造方法,其中該 機器設定的改變包含至少曝光劑量的一改變及照明設定的 一改變之一。 5. 如申請專利範圍第1項之微影製造方法,其中第一資 訊及第二資訊為C D間距異常。 6. 如申請專利範圍第1項之微影製造方法,其中該圖樣 包含多個次圖樣,每一次圖樣具有一空間頻率之各別範 圍,及其中投影輻射之成型光束在一標的部分包含兩個步 驟於機器設定之改變的每一步驟被計算及使用時。 7. 如申請專利範圍第6項之微影製造方法,其中該空間 頻率之各別範圍被選定以使得ΝΑΛΟ. 5 λ )&gt;空間頻率〉NA/ λ ,及ΝΑ/ λ &gt;空間頻率。 8. 一種微影投影裝置,包含: -一輻射系統,用以提供輻射的一投射光束; -一支撐系統用以支撐成型裝置,該成型裝置作用以根據 一期望圖樣成型該投影光束; -一基板表用以保持一基板; - 一投影系統用以投影該成型光束在該基板之一標的部分 上; -機器設定可施於至少曝光能量設定及照明設定之一; 其特徵為經由另包含: 用以改變機器設定之裝置; 用以計算之一處理器O: \ 71 \ 71661-921212.ptc Page 21 583512 _ Case No. 90113618_p Year Month / Two Days __ VI. Multiple Coefficient Groups for Patent Application One; and the different characteristics of the projected pattern. 4. The lithographic manufacturing method according to claims 1 and 2, wherein the change in the machine setting includes at least one change in exposure dose and one change in lighting setting. 5. For the lithographic manufacturing method in the first scope of the patent application, the first information and the second information are abnormal CD spacing. 6. The lithographic manufacturing method according to item 1 of the patent application range, wherein the pattern includes multiple sub-patterns, each of which has a respective range of a spatial frequency, and the shaped beam of projection radiation therein includes two in a target portion. Steps are calculated and used at each step of the machine setting change. 7. The lithographic manufacturing method according to item 6 of the patent application range, wherein the respective ranges of the spatial frequency are selected so that NAA0.5. Λ) &gt; space frequency> NA / λ, and NA / λ &gt; space frequency. 8. A lithographic projection device comprising:-a radiation system for providing a projected beam of radiation;-a support system for supporting a molding device which functions to shape the projection beam according to a desired pattern;-a The substrate table is used to hold a substrate;-a projection system is used to project the shaping beam on a target portion of the substrate;-the machine setting can be applied to at least one of the exposure energy setting and the lighting setting; and is characterized by further including: A device used to change machine settings; used to calculate a processor O:\71\71661-921212.ptc 第22頁 583512O: \ 71 \ 71661-921212.ptc Page 22 583512 O:\71\71661-921212.ptc 第23頁O: \ 71 \ 71661-921212.ptc Page 23
TW90113618A 2001-04-04 2001-06-05 Lithographic manufacturing process, lithographic projection apparatus, and device manufactured thereby TW583512B (en)

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