JPH0311613A - Blind device - Google Patents

Blind device

Info

Publication number
JPH0311613A
JPH0311613A JP1144221A JP14422189A JPH0311613A JP H0311613 A JPH0311613 A JP H0311613A JP 1144221 A JP1144221 A JP 1144221A JP 14422189 A JP14422189 A JP 14422189A JP H0311613 A JPH0311613 A JP H0311613A
Authority
JP
Japan
Prior art keywords
exposure
mask
light
blind
alignment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP1144221A
Other languages
Japanese (ja)
Other versions
JPH0670960B2 (en
Inventor
Atsunobu Une
篤暢 宇根
Masanori Suzuki
雅則 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP1144221A priority Critical patent/JPH0670960B2/en
Publication of JPH0311613A publication Critical patent/JPH0311613A/en
Publication of JPH0670960B2 publication Critical patent/JPH0670960B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03FPHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70Microphotolithographic exposure; Apparatus therefor
    • G03F7/70058Mask illumination systems

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)

Abstract

PURPOSE:To make it possible to servo a mask and a wafer directly at all times even in exposure and thereby to prevent deterioration of the precision in position alignment due to thermal deformation by using a blind which intercepts an exposure light and transmits an alignment light. CONSTITUTION:As a material for blinds 2a to 2d of a light stepper, an orange filter A, an yellow filter B or a UV filter C intercepting a g-line, an i-line or an excimer laser, which is an exposure light L, and transmitting an He-Ne laser or a visible light, which is an alignment light L', is employed in place of a metal. By using these blinds 2a to 2d, only the alignment light L' can be transmitted. Thereby it is possible to expose only an arbitrary exposure area by setting the blinds 2a to 2d at prescribed positions and executing exposure. Since it is possible to conduct servo operations in exposure, in addition, deterioration of the precision in position alignment is prevented, although a time for exposure is required.

Description

【発明の詳細な説明】 「産業上の利用分野] 本発明は、マスクパターンをつ1ハ1.に、焼3\イ・
j番ノで半導体を製造する露光HItBにおい゛C1露
光光を遮ることによっく任意の露光領域の露光を可能に
するブラインド装置に関する一bのである。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention provides a method for printing a mask pattern in one
Part 1b relates to a blind device that makes it possible to expose an arbitrary exposure area by blocking the C1 exposure light in the exposure HItB for manufacturing semiconductors in the jth number.

[従来の技術] 一般に、光ステッパーに用いられるブラインド装置は、
第1図に示すようにレブークルど貯ぽれるマスク1の下
に、四方から露光領域を囲むように移動する4つの矩形
状ブラインド2a〜2d(2つのみ図示)と、該ブライ
ンド28〜2dを移動し、正確な位置に位置決めセット
する11 ・クリ1ユンコーダ付きDCCサーボ−夕等
の駆動源をもつ位置決め設定m横系3(1つのみ図示)
から構成される。前記ブラインド2a・−2dは、露光
光1゜を遮る!、:めにアルミニウム等の金属で作られ
ζいるので、マスク1とつ:LL12位置合わυりるた
めの7ライメント光(可視光やHe−Ne(ヘリウム−
ネオン)レーザー等が通常用いられる)も透過させない
。したがって、ブラインド2 a −、2dでマスク1
上に形成されているン゛バイスパターン5の一部を覆っ
で露光するような場合には、該パターン5周辺に形成さ
れ(いる位置合わせマークM″1を’in過l)、1儲
1影レンズ6(二よりつ玉ハ4」二の位置合わせマーク
M2に照射されるアライメント光1−′ を遮ることに
なり、マスク1とウェハ4を直接位侃合わUりることは
不1り能であった。このため最初にブラインド2a〜2
dがない状態で、マスク1とつエバ4を位置合わVし、
マスク1位置をマスクステージ7の駆動系にイ・1りら
れl、:位置検出系(例えばリニアエンコーダやロータ
リシン・ダ)′C:読み取って保持すると同時に、つ1
ハ4 &/買をレーザー干渉系で検出して保持した後、
ブラインド2a−2d’を所定の位置に移動して露光り
るh法が採用され−(いた。
[Prior Art] Generally, a blind device used for an optical stepper is
As shown in FIG. 1, four rectangular blinds 2a to 2d (only two are shown) move to surround the exposure area from all sides, and the blinds 28 to 2d are placed under the mask 1, which is stored in a reboucle. Move and set the position at an accurate position 11 - Positioning setting m horizontal system 3 (only one shown) with a drive source such as a DCC servo with a clear 1 uncoder
It consists of The blinds 2a and -2d block 1° of exposure light! ,: Because the mask is made of metal such as aluminum, one mask and 7 lines of light (visible light or He-Ne (helium-
It also does not transmit neon (neon) lasers, etc., which are commonly used. Therefore, mask 1 with blinds 2 a −, 2 d
In the case of exposing a part of the vice pattern 5 formed above, the positioning mark M″1 formed around the pattern 5 is The shadow lens 6 (twisted bead 4) blocks the alignment light 1-' irradiated to the second alignment mark M2, so it is not possible to directly align the mask 1 and the wafer 4. Therefore, first blinds 2a~2
d, align the mask 1 and the evaporator 4,
The mask 1 position is read and held by the drive system of the mask stage 7.
C4 After detecting and holding &/buy with a laser interference system,
The h method was adopted in which the blinds 2a to 2d' were moved to predetermined positions and exposed.

[:R,明が解決しようとする課題1 前記しICJ、うに従来のシラインド装置6は、フライ
メン1〜光1−′ を通すことができないので、露光中
にマスク1とウニ1−ハ4を直接的に常時リーボするこ
と(ま不可能であり、マスク1とつ1ハ4を所定の位置
に位置合わ′t!レットシた後、該位置を個別の位置検
出系で検出し、保持していた。このためマスク1、ウェ
ハ4を載せているマスクステージ71”)つ1−ハスノ
゛−ジ8が熱喰形舌に、」;り移動すると、マスク1と
ウェハ4間の相対位置が51つことになり、その結果と
しで、位置合わIL精瓜が劣化づ−ると苦う問題を石し
ていIこ。この問題は、露光時間が短い光スアッパーと
比べて、露光時間が数分から111間もかかるX線露光
装置の場合、顕著であった。さら(二、X線露光装置の
場合、−回の露光毎にギャップと位置を合わUるため、
その度にブラインド2a〜2dを出し入れづ”る必要が
あり、つX1ハ4−枚当りの処理時間が長くなる欠点を
有していた。
[: Problem 1 that R, Akira is trying to solve: The conventional shielding device 6 mentioned above cannot pass the flymen 1 to the light 1-', so the mask 1 and the sea urchins 1 to 4 are not allowed to pass through during exposure. It is impossible to directly rotate the mask 1 and 1 and 4 at a predetermined position. Therefore, when the mask stage 71") on which the mask 1 and the wafer 4 are mounted moves to the heat-eating tongue, the relative position between the mask 1 and the wafer 4 becomes 51". As a result, the problem of alignment IL melon deteriorating is solved. This problem was more noticeable in the case of an X-ray exposure apparatus, which takes an exposure time of several minutes to 111 hours, compared to an optical scatter that has a short exposure time. Furthermore, (2. In the case of an X-ray exposure device, the gap and position are adjusted every - exposure, so
It is necessary to take the blinds 2a to 2d in and out each time, which has the disadvantage that the processing time per 4 sheets of X1 is increased.

しかも当該X線露光では、露光光どして軟X線が用いら
れるので、7スクはX線を透過り゛るSNやBNから4
Tる薄いメンブレン上にX線を吸収づ゛るタンタル(「
a)や金(Au)などの重金属(通1己吸収体と呼ばれ
る)でデバイスパターン5を形成したしのが用いられる
1、まI(、現状では光露光りと異なり、軟X線を屈折
させることができるレンズ6 )I’; パ”?=系が
ないので、露光は点光源から発する発散X線を照射する
ことによってなされる。
Moreover, in the X-ray exposure, soft X-rays are used as exposure light, so the 7th screen is 4th from SN and BN, which transmit X-rays.
Tantalum ("
A device pattern 5 is formed with a heavy metal (called a self-absorber) such as a) or gold (Au).Currently, unlike light exposure, soft X-rays are refracted. Since there is no lens 6) I';PA"?= system that can be used, exposure is performed by irradiating divergent X-rays emitted from a point light source.

したがって、平行光を用いるのとは異なり、転写パター
ンには点光源の大きさに比例した半影ぼけと呼ばれるぼ
けを生じる。このぼ4J沿を小ざくするためにはマスク
ステージ7上に保持されるマスク1とウェハスジ1− 
ジ81:保持されるウェハ4をできる限り近接させなけ
ればならない。同様に露光光を遮るブラインド2a〜2
dちぼジノが小さくなるようにマスク1になるべく近付
けて説ける必要がある。
Therefore, unlike using parallel light, a blur called penumbra blur proportional to the size of the point light source occurs in the transferred pattern. In order to make this along 4J small, the mask 1 held on the mask stage 7 and the wafer strip 1-
81: The wafers 4 to be held must be placed as close together as possible. Blinds 2a to 2 that similarly block exposure light
It is necessary to get it as close to Mask 1 as possible so that d Chibojino becomes smaller.

ここにおいて、本発明は前記従来の欠点および要望を解
決および達成するの(二右効適切なシラインド装置を提
供せ/vとするものである。
SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a suitable silencing device which overcomes and accomplishes the above-mentioned disadvantages and needs of the prior art.

[課題を解決するための手段〕 前記課題を解決するために、本発明は、露光装置の露光
領域を制限Jるために、露光光を遮るブラインドと、該
ブラインドを移動し所定の位置に位置決めセットする位
置決め設定機14系からなるブラインド装置にd3い文
、露光光は遮り、マスクとつTハを位置合わせするため
に用いるアライメント光は透過する前記ブラインドを用
いるどどもに、マスクステージを中に挟ん【・1側(:
当該シンインドをかつ下側に前記マスクを配し−(当該
マスクと前記つ[ハを可及的に近接配置自在としてなる
[Means for Solving the Problems] In order to solve the above problems, the present invention provides a blind that blocks exposure light and a method for moving and positioning the blind at a predetermined position in order to limit the exposure area of an exposure apparatus. A blind device consisting of 14 positioning and setting devices is used to block the exposure light and transmit the alignment light used to align the mask and the T-shape. Sandwiched between [・1 side (:
The mask is arranged below the mask, and the mask and the mask can be placed as close as possible.

1゛作 用1 本発明は前記手段を採用し、露光光は遮り、アライメン
[・光は透過するブラインドを用いることによって、露
光中もマスクとウェハを直接的に常時ザーボぐ≧5゛る
1、二め、熱変形/rと(二より位置合ねせ精度が劣化
することがないし、マスクステージの1−側に!ir記
ゾシインドをかっF側に前記マスクを配せるようになっ
たので、前記マスクと前記つ玉ハを可及的に最接近構成
可能とした。
1゛Function 1 The present invention adopts the above-mentioned means, and by using a blind that blocks the exposure light and transmits the alignment light, the mask and the wafer can be directly servoed at least 5゛1 even during exposure. , Second, thermal deformation /r (2) The alignment accuracy does not deteriorate, and the mask can now be placed on the F side while placing the mask on the 1- side of the mask stage. , the mask and the ball can be configured to be as close as possible.

[実施例] 本発明の実施例を図面につい−(1,T細に説明りる1
゜第1図に示す光ステッパーにおいて、ブラインド2a
〜・2(1に用いる月利として、アルミニウムのような
金属に代えて、露光光[−であるq線(43(3nm)
やi線(365nm)、あるいはエギシ7し〜ザー(<
300nm)を遮り、アライメント光1、′Cあるl1
c−Ncレーザー(632,8nm)や可視光(400
nm−760nm)を透過する第2図に示すような波長
に対する透過率分布をbつオレンジノイルターAやイエ
ローフィルター81あるいはUVノイルターCを用いる
。このようなブラインド2 a−26を用いることによ
ってアライメント光1−′ のみを通ずことができるの
で、ブラインド2a−2dを所定の位置にセラ1〜して
露光する、ユど(″より、任意の露光領域のみを露光す
ることができ、且つ、露光中サーボが可能であるので、
露光時間を要してし位置合わせ精度が劣化することはな
い。
[Examples] Examples of the present invention are explained in detail with reference to the drawings.
゜In the optical stepper shown in Fig. 1, the blind 2a
~・2 (As the monthly rate used in 1, instead of metal such as aluminum, exposure light [-q line (43 (3 nm)
or i-line (365 nm), or
300nm), alignment light 1, 'C l1
c-Nc laser (632,8 nm) and visible light (400 nm)
Orange Neulter A, Yellow Filter 81, or UV Neulter C is used, which has a transmittance distribution for wavelengths as shown in FIG. By using such blinds 2a-26, it is possible to pass only the alignment light 1-'. It is possible to expose only the exposure area of , and servo is possible during exposure.
The alignment accuracy does not deteriorate due to the exposure time required.

第3図及び第4図は本発明をX線露光装置に適用した場
合である1、第3図CまX線露光装置の側面図、第4図
は同・一部省略平面図であって、ブラインド2a〜2d
はマスクステージ7の」−側に、かつマスク1は下側に
それぞれ配される。第3図にはマスク1に近接して段重
)だブラインド2E1゜2bが描かれている。第4図に
示すブラインド2a・〜2dは四りから1バイス領域α
(斜線で示す)を取り囲むように配置され、r+−タリ
エン」−ダ付きDC−リーボーし−9等の駆動源をもつ
位置決め設定機構系3(1つのみ図示)に、ノζ・ノで
所定の位置まで正確に移動され、デバイス領域α外の軟
X線1.1を遮る。i−れに二にリブラインド28〜2
dが無い場合に、隣のデバイス領域αへ、吸収体9を透
過しくX線L1が漏れることによって生じる2重露光や
」−ナ一部の4重露光を防止することができる。まI、
二、XYIlll」−のスクライブラインJ二に配置さ
れたアライメントマークx1.x2. y」−をm ’
)J、うに二ツノインド2aへ・2 +iを配置りるこ
とによって、マスク1上の位置合わせマークがX線1−
1によっ(1)1−ハ4Fに転°LIされることを防ぐ
ことができるので、マスクマークを隣の1バイス領域α
I: k−配置Jることして・きる。したが・〕で、ウ
ェハ4上にはウェハマーク形成領域しか必要でなく、マ
ーク領域を小さり(9〜る利点がある。。
3 and 4 show the case where the present invention is applied to an X-ray exposure device 1. FIG. 3C is a side view of the X-ray exposure device, and FIG. 4 is a partially omitted plan view of the same. , blinds 2a-2d
is arranged on the "-" side of the mask stage 7, and the mask 1 is arranged on the lower side. In FIG. 3, a multi-layered blind 2E1-2b is depicted adjacent to the mask 1. The blinds 2a to 2d shown in FIG.
(shown with diagonal lines), and has a drive source such as a DC-Riebaud-9 with an r+-Talien'-da. The soft X-rays 1.1 outside the device area α are blocked. i-reni ni reblind 28~2
In the absence of d, it is possible to prevent double exposure caused by leakage of X-rays L1 through the absorber 9 to the adjacent device region α, and quadruple exposure in a part of the device region α. Well,
2. Alignment mark x1 placed on scribe line J2 of ``XYIllll'' x2. m'
) J, by placing 2
1, it is possible to prevent LI from being transferred to (1) 1-c 4F, so the mask mark is placed in the adjacent 1 vice area α
I: k-configuration J can be done. However, there is an advantage that only a wafer mark forming area is required on the wafer 4, and the mark area can be made smaller.

さらに、マスクマークとつ〕ハマークを重ね合ゎl!【
位置合わぜを行うアライメント方式に: a3いCも、
マスクマークがウェハマーク十に転11jされないので
つ1ハンーク形状が保存され、該つ]:ハンークを次の
層のアレイメン1−に利用−りることもで−cS’る。
Furthermore, overlap the mask mark and ha mark! [
Alignment method for positioning: A3C also,
Since the mask mark is not transferred to the wafer mark 11j, the shape of the hank is preserved, and the hank can be used for the next layer's array member 1-cS'.

露光中もアライメントを行うためには、アレイメン1〜
光]2がブラインド2a〜2dを透過りる必要があり、
ブラインド2 a〜2 dはガラス板(石英、パイレッ
クスガラス)やプラスデック祠のよ・)イ′に透明材料
で作られる。また、アレイメン1〜光12が透過するこ
とによって光の位相が人、〜く変化し/iいよ・う(二
、屈折率の小さい、且つ、厚さの薄いものが使用される
In order to perform alignment during exposure, use array members 1 to 1.
Light] 2 needs to pass through the blinds 2a to 2d,
The blinds 2a to 2d are made of a transparent material such as a glass plate (quartz, pyrex glass) or a plus deck shrine. Furthermore, when the array members 1 to 12 pass through, the phase of the light changes significantly.(2) A material with a small refractive index and a thin thickness is used.

本発明の実施例の場合、ブラインド2 a−2dを移動
づ−る駆動源として、[1−クリ:1−ン:−1−ダ付
ぎのDCサーボし−9の例を示したが、リニアにンコー
ダ付さの[)C′v−ボ5〔−夕やパルスモータCb良
い。また、ブラインド材0〜2 dとしく矩形状のもの
を示したが、半円状やその細形状の−bのでム良い。
In the case of the embodiment of the present invention, as a driving source for moving the blinds 2a-2d, an example of a DC servo with [1-clean:1-clean:-1-da] is shown, but the linear The pulse motor Cb with the encoder is good. Moreover, although the blind material 0 to 2d is shown as having a rectangular shape, it is also possible to use a semicircular shape or a narrow shape thereof.

[発明の効采コ かくして本発明によれば、ブラインドは露光光を遮るが
常時/:lイメント・光を透過さUるのぐ、露光中ザー
ボが可能になり、長時間露光においても位置合わせ精1
良が劣化1)4fいどどI)b、’、 X ffA露光
装置の場合マスクとウェハを最接近構成自在どなるなど
の顕著な効果が得られる。
[Effects of the Invention] Thus, according to the present invention, the blind blocks the exposure light but always allows the light to pass through, making it possible to perform servo control during exposure, and positioning even during long exposures. Sei 1
1) 4f I) b,',

【図面の簡単な説明】[Brief explanation of drawings]

第1図はブラインド装置を持つスjツバ−の中央縦断面
図、第2図はブラインド材料の光波長に対する透過率特
性を示す図、第3図乃〒第1図は本発明の実施例である
。 1・・・マスク、2a〜2d・・・ブラインド、3・・
・位置決め設定va構系、4・・・ウェハ、5・・・デ
バイスパターン、6・・・投影レンズ、7・・・マスク
ステージ、8・・・ウェハステージ、9・・・吸収体、
Δ・・・オレンジノイルター、B・・・イエローフィル
ター、C・・・Uvフィルター、I−・・・露光光、l
’、L2・・・アライメント光、Ll・・・X線、Ml
・・・7スクマーク、M2・・・つエバマーク、α・・
・デバイス領域0 第1図 第2図 00 汲 500  600 長尺(nm) 第8図 第4図
Figure 1 is a central longitudinal sectional view of a bathtub with a blind device, Figure 2 is a diagram showing the transmittance characteristics of the blind material with respect to light wavelength, and Figures 3 to 1 are examples of the present invention. be. 1...Mask, 2a-2d...Blind, 3...
・Positioning setting VA system, 4... Wafer, 5... Device pattern, 6... Projection lens, 7... Mask stage, 8... Wafer stage, 9... Absorber,
Δ...Orange Noilter, B...Yellow filter, C...Uv filter, I-...Exposure light, l
', L2... Alignment light, Ll... X-ray, Ml
...7 Skumarks, M2...Evermarks, α...
・Device area 0 Fig. 1 Fig. 2 00 500 600 Long length (nm) Fig. 8 Fig. 4

Claims (1)

【特許請求の範囲】 1、露光装置の露光領域を制限するために、露光光を遮
るブラインドと、該ブラインドを移動し所定の位置に位
置決めヒットする位置決め設定機構系からなるノライン
ド装置において、露光光は遮り、マスクとウェハを位置
合わせするために用いるアライメント光は透過する前記
ブラインドを用いたことを特徴とするブラインド装置。 2、位置決め設定機構系により所定の位置に位置決めセ
ットされるとともに露光光は遮り、マスクとウェハを位
置合わセットするために用いるアライメント光は透過す
るブラインドを上側にかつデバイスパターンを形成した
前記マスクを下側にそれぞれマスクステージを中に挟ん
で配し、前記意マスクと前記ウェハを可及的に近接配置
自在としたことを特徴とするブラインド装置。
[Scope of Claims] 1. In order to limit the exposure area of the exposure device, a no-lind device includes a blind that blocks the exposure light, and a positioning and setting mechanism system that moves the blind and positions it at a predetermined position. A blind device characterized in that the blind device uses the blind that blocks out the alignment light used for aligning the mask and the wafer, and transmits the alignment light used for aligning the mask and the wafer. 2. The mask is positioned and set in a predetermined position by the positioning and setting mechanism system, and the exposure light is blocked and the alignment light used to align and set the mask and the wafer is transmitted through the blind. 1. A blind device characterized in that a mask stage is disposed on the lower side thereof, sandwiching the mask stage therebetween, so that the mask and the wafer can be placed as close as possible.
JP1144221A 1989-06-08 1989-06-08 Blind device Expired - Fee Related JPH0670960B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1144221A JPH0670960B2 (en) 1989-06-08 1989-06-08 Blind device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1144221A JPH0670960B2 (en) 1989-06-08 1989-06-08 Blind device

Publications (2)

Publication Number Publication Date
JPH0311613A true JPH0311613A (en) 1991-01-18
JPH0670960B2 JPH0670960B2 (en) 1994-09-07

Family

ID=15357063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1144221A Expired - Fee Related JPH0670960B2 (en) 1989-06-08 1989-06-08 Blind device

Country Status (1)

Country Link
JP (1) JPH0670960B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0465110A (en) * 1990-07-05 1992-03-02 Soltec:Kk X-ray transfer apparatus
JP2004356633A (en) * 2003-05-28 2004-12-16 Asml Netherlands Bv Lithographic equipment
JP2006066437A (en) * 2004-08-24 2006-03-09 Oki Electric Ind Co Ltd Semiconductor device manufacturing method and manufacturing equipment used therefor
US8059261B2 (en) 2003-05-30 2011-11-15 Asml Netherlands B.V. Masking device, lithographic apparatus, and device manufacturing method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101880269B1 (en) * 2018-01-05 2018-07-19 주식회사 로얄정공 Filter press

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151824A (en) * 1984-08-21 1986-03-14 Hitachi Ltd X-ray exposure method and apparatus thereof
JPS63299125A (en) * 1987-05-28 1988-12-06 Fujitsu Ltd Mask for x-ray exposure

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151824A (en) * 1984-08-21 1986-03-14 Hitachi Ltd X-ray exposure method and apparatus thereof
JPS63299125A (en) * 1987-05-28 1988-12-06 Fujitsu Ltd Mask for x-ray exposure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0465110A (en) * 1990-07-05 1992-03-02 Soltec:Kk X-ray transfer apparatus
JPH0570297B2 (en) * 1990-07-05 1993-10-04 Solex Kk
JP2004356633A (en) * 2003-05-28 2004-12-16 Asml Netherlands Bv Lithographic equipment
US7423730B2 (en) 2003-05-28 2008-09-09 Asml Netherlands B.V. Lithographic apparatus
US7612867B2 (en) 2003-05-28 2009-11-03 Asml Netherlands B.V. Lithographic apparatus
US8059261B2 (en) 2003-05-30 2011-11-15 Asml Netherlands B.V. Masking device, lithographic apparatus, and device manufacturing method
JP2006066437A (en) * 2004-08-24 2006-03-09 Oki Electric Ind Co Ltd Semiconductor device manufacturing method and manufacturing equipment used therefor
JP4493442B2 (en) * 2004-08-24 2010-06-30 Okiセミコンダクタ株式会社 Manufacturing method of semiconductor device and manufacturing apparatus used in the manufacturing method

Also Published As

Publication number Publication date
JPH0670960B2 (en) 1994-09-07

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