Source: http://www.google.com/patents/US4510222?dq=7,682,496
Timestamp: 2017-09-21 09:32:41
Document Index: 223593035

Matched Legal Cases: ['art    66', 'art    85', 'art    70', 'art    66', 'art    66', 'art    66', 'art    66', 'art                                2300', 'art    66', 'art    58', 'art    64']

Patent US4510222 - Photomask with corrected white defects - Google Patents
A photomask with white defects that have corrected with a film comprising a mixture of silver and tantalum oxide. The film has a good resistance to chemicals....http://www.google.com/patents/US4510222?utm_source=gb-gplus-sharePatent US4510222 - Photomask with corrected white defects
Publication number US4510222 A
Application number US 06/496,245
Also published as EP0095094A2, EP0095094A3
Publication number 06496245, 496245, US 4510222 A, US 4510222A, US-A-4510222, US4510222 A, US4510222A
Inventors Masaaki Okunaka, Katsuro Mizukoshi, Mikio Hongo, Tateoki Miyauchi
US 4510222 A
2. A photomask with corrected white defects according to claim 1 wherein the film comprising a mixture of silver and tantalum oxide is obtained by applying a composition composed of
(a) silver nitrate,
(b) at least one compound selected from the group of tantalum complexes described by general formulas (1) to (3)
where R1, R3, and R5 are alkyl groups of 1 to 18 carbon atoms, R2 and R4 are alkyl or alkoxy groups of 1 to 18 carbon atoms, and l, m, n, and k are 0 or integers from 1 to 5, with n+k≦5, and
said components (a) and (b) being combined in a mixing ratio by mole falling with the range described in Eq. (I) below ##EQU3## to at least the white defects of a photomask pattern, and irradiating the defects with a beam of light, thereby bringing about deposition of the silver and tantalum oxide.
Composition Nos. 1 to 14 in the table were spin coated at 2000 rpm on the white defect 3 in the chromium pattern 2 formed on the photomask substrate (FIG. 1--1) and dried for 5 minutes at 80° C. to form film 4 shown in FIG. 1-2.
Next, tests were conducted to determine the alkali and acid resistances of the deposited films. The alkali resistance was determined by measuring the light transmission ratio after 30 minutes of immersion in an aqueous solution of 5% NaOH at 50° C., and comparing this with the initial value. The resistance to acid was determined by measuring the transmission ratio after 30 minutes of immersion in hot, concentrated sulfuric acid at 100° C., and comparing this with the initial value. The respective test values are given in the table. These results clearly show that the deposited films obtained from the compositions according to the present invention all have excellent resistance to alkali and acid.
TABLE__________________________________________________________________________silver   Liquid composition*nitrate                      carboxylic                                film                                    transmission ratio (%)   (parts                    acid    thick-   after alkali                                                after acid   by    Tantalum compound   (parts by                                ness     resistance                                                resistanceNo.   weight)    (parts by weight)   weight) (Å)                                    initially                                         test   test adhesion__________________________________________________________________________   20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        none    1500                                    3    4      4    ○   (= 1 part    66 (= 1 part by mole)   by mole)2  20    Ta(OC4 H9)(CH3 OCOCHCOCH3)4,                        "       1300                                    4    5      5    ○   (= 1 part    85 (= 1 part by mole)   by mole)3  20    Ta(OC2 H5)(OCOC7 H15)2,                        "       1200                                    4    5      5    ○   (= 1 part    70 (= 1 part by mole)   by mole)4  20    Ta(OC2 H5)(CH3 COCHCOCH3)2 --                        "       1700                                    3    4      4    ○   (= 1 part    (OCOC7 H15)2, 82 (= 1 part by mole)   by mole)5  20    Ta(OCH3)(C4 H9 OCOCHCOOCH3)--                        "       1700                                    3    4      4    ⊚                                                     1   (= 1 part    (OCOC2 H5)3, 70 (= 1 part by mole)   by mole)6  20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        propionic                                1700                                    3    3      3    ⊚                                                     4   (= 1 part    66 (= 1 part by mole)                        acid, 4.3   by mole)                  (= 0.5 part                        by mole)7  20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        succinic                                1900                                    3    3      3    ⊚                                                     .   (= 1 part    66 (= 1 part by mole)                        acid 6.9   by mole)                  (= 0.5 part                        by mole)8  20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        α-hydroxy-                                1900                                    3    3      3    ⊚   (= 1 part    66 (= 1 part by mole)                        acetic acid   by mole)                  6.0 (=  0.5 part                        by mole)9  20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        citraconic                                2000                                    2    2      2    ⊚   (= 1 part    66 (= 1 part by mole)                        acid, 7.5   by mole)                  (= 0.5 part                        by mole)10 20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        15 (= 1 part                                2300                                    2    2      2    ⊚   (= 1 part    66 (= 1 part by mole)                        by mole)   by mole)11 20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        none    1100                                    3    4      4    ○   (= 1 part    (= 1 part by mole)   by mole)12 20    Ta(OC2 H5)2 (CH3 COCHCOCH3)3,                        "00     2400                                    3    4      4    ○   (= 1 part    (= 1 part by mole)   by mole)13 20    TaCl(OC2 H5)2 (CH3 COCHCOCH3)2,                        "       1000                                    4    5      5    ○   (=  1 part    58 (= 1 part by mole)   by mole)14 20    TaCl(OC4 H9)2 (C3 H7 COCHCOOC2    H5),           "        900                                    4    5      5    ○   (= 1 part    64 (= 1 part by mole)   by mole)__________________________________________________________________________ *solvent consists of acetonitrile (30 parts by weight) + ethylene glycol monomethyl ether (70 parts by weight)
20 g of Silver nitrate, 66 g of Ta(OC2 H5)2 --(CH3 COCHCOCH3)3, 10 g of citraconic acid, 30 g of acetonitrile, and 70 g of methyl cellulose were mixed to form a solution. This solution was spin coated onto a photomask substrate at 2000 rpm, then dried for 10 minutes at 60° C. The photomask defects were then irradiated with a beam of condensed visible light. The beam intensity at the substrate surface was set at 1000 W/cm2 and the diameter of the condensed beam at 5 microns. A light-shielding film was deposited in the irradiated area after 100 seconds of irradiation.
JPS586128A * Title not available
JPS57206026A * Title not available
EP0873343A1 * Jun 6, 1996 Oct 28, 1998 Advanced Technology Materials, Inc. Metal complex source reagents for chemical vapor deposition
EP0873343A4 * Jun 6, 1996 Dec 15, 1999 Advanced Tech Materials Metal complex source reagents for chemical vapor deposition
U.S. Classification 430/5, 427/142, 430/945, 430/938, 427/140
International Classification G03F1/72, G03F1/00, C09D11/00, C09D10/00, C09D1/00, H01L21/027
Cooperative Classification Y10S430/146, Y10S430/139, G03F1/54, G03F1/72
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:OKUNAKA, MASAAKI;MIZUKOSHI, KATSURO;HONGO, MIKIO;AND OTHERS;REEL/FRAME:004132/0404
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OKUNAKA, MASAAKI;MIZUKOSHI, KATSURO;HONGO, MIKIO;AND OTHERS;REEL/FRAME:004132/0404