US 7,566,524 B2
Organic dye for recording layer and high density optical recording medium using the same
Ming-Chia Lee, Dajia Township, Taichung County (Taiwan); Chien-Liang Huang, Taoyuan (Taiwan); Wen-Yih Liao, Taichung (Taiwan); Ching-Yu Hsieh, Cyonglin Township, Hsinchu County (Taiwan); Tzuan-Ren Jeng, Hsinchu (Taiwan); and An-Tse Lee, Tucheng (Taiwan)
Assigned to Industrial Technology Research Institute, Hsinchu (Taiwan)
Filed on Dec. 29, 2005, as Appl. No. 11/323,144.
Claims priority of application No. 94139057 A (TW), filed on Nov. 08, 2005.
Prior Publication US 2007/0105049 A1, May 10, 2007
Int. Cl. G11B 7/24 (2006.01)
U.S. Cl. 430—270.18  [430/945; 428/64.8; 369/288] 11 Claims
 
1. A recording layer, for a high density optical recording medium employing short-wavelength laser source with a wavelength no longer than 530 nm, comprising at least a dye having a following general chemical structural formula:

OG Complex Work Unit Drawing
wherein n is an integer of 0 or 1, X represents oxygen atom or C(CN)2, A represents substituted or non-substituted cyclic alkyl group and R1, R2, R3, R4, R5, R6, R7, R8, R9, R10 represent hydrogen atom, halogen atom, alkyl group with carbon number 1-18 (C1-18), alkoxy group with carbon number 1-8 (C1-18), carboxyl group with carbon number 1-18 (C1-18), amino group, substituted amino group, alkyl ester group with carbon number 1-8 (C1-18), carboxyl group with carbon number 1-18 (C1-18), benzene including amino group or carboxyl group, nitro group, adamantyl carbonyl group, adamantyl group, alkenyl group, alkynyl group, amino group, azo group, aryl group, aryloxy group, arylcarbonyl group, aryloxycarbonyl group, arylcarbonyloxy group, aryloxycarbonyloxy group, alkylcarbonyl group, alkylcarbonyloxy group, alkoxycarbonyloxy group, alkoxycarbonyl group, carbamoyl group, cyanate group, cyano group, formyl group, formyloxy group, heterocyclic group, isothiocyanate group, isocyano group, isocyanate group, nitroso group, perfluoroalkyl group, perfluoroalkoxy group, sulfinyl group, sulfonyl group, silyl group, or thiocyanate group.