Patents by Inventor Yen-Cheng Li

Yen-Cheng Li has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20060177764
    Abstract: The present invention provides a positive-tone photosensitivity resin composition comprising (A) an alkali-soluble acrylic resin, the alkali-soluble acrylic resin containing at least one structure unit selected from the group consisting of the following structure unit (1), structure unit (2), and structure unit (3), wherein R1, R2, R3, R4, R5, R, U, V, X, Y and Z are defined the same as the specification; (B) a naphthoquinone-diazide group containing compound; and (C) an solvent, the solvent is selected from the group consisting of ethers, ketones, esters, aromatic hydrocarbons and acetoacetates.
    Type: Application
    Filed: July 26, 2005
    Publication date: August 10, 2006
    Applicant: Everlight USA, Inc.
    Inventors: Hsin-Ming Liao, Yu-Ming Chen, Yen-Cheng Li
  • Patent number: 6720430
    Abstract: The present invention discloses a compound having the following formula (I), wherein R1 is H, haloalkyl group or C1-C4 alkyl group; R2 is hydroxyl group, C1-C8 alkoxy group or C1-C8 thioalkyl group; G is (CH2)n, O or S, wherein n is 0, 1, 2, 3 or 4; Rc is a lactone group; and m is 1, 2 or 3. This compound is a monomer and suitable for synthesis to form polymers with good hydrophilicity, adhesion and dry-etch resistance. Particularly, this compound can form photosensitive polymers or copolymers by reacting with suitable photosensitive monomers.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: April 13, 2004
    Assignee: Everlight USA, Inc.
    Inventors: Chi-Sheng Chen, Yen-Cheng Li, Meng-Hsum Cheng
  • Patent number: 6703178
    Abstract: The present invention discloses a chemical amplified photoresist composition including a polymer having a repeated unit of the formula (II), wherein R1 is H, haloalkyl group or C1-C4 alkyl group; R2 is hydroxyl group, C1-C8 alkoxy group or C1-C8 thioalkyl group; G is (CH2)n, O or S, wherein n is 0, 1, 2, 3 or 4; Rc is a lactone group; and m is 1, 2 or 3. The chemical amplified photoresist composition of the present invention can be applied to general lithography processes, and particularly to the lithography of ArF, KrF or the like light sources, and exhibit excellent resolution, figures and photosensitivity.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 9, 2004
    Assignee: Everlight USA, Inc.
    Inventors: Chi-Sheng Chen, Yen-Cheng Li, Meng-Hsum Cheng
  • Publication number: 20030232270
    Abstract: The present invention discloses a chemical amplified photoresist composition including a polymer having a repeated unit of the formula (II), 1
    Type: Application
    Filed: May 28, 2002
    Publication date: December 18, 2003
    Applicant: Everlight USA, Inc.
    Inventors: Chi-Sheng Chen, Yen-Cheng Li, Meng-Hsum Cheng
  • Publication number: 20030229234
    Abstract: The present invention discloses a compound having the following formula (I), 1
    Type: Application
    Filed: May 28, 2002
    Publication date: December 11, 2003
    Applicant: Everlight USA, Inc.
    Inventors: Chi-Sheng Chen, Yen-Cheng Li, Meng-Hsum Cheng
  • Patent number: 6639035
    Abstract: The present invention discloses a polymer having a repeated unit of the formula (II), wherein R1 is H, haloalkyl group or C1-C4 alkyl group; R2 is hydroxyl group, C1-C8 alkoxy group or C1-C8 thioalkyl group; G is (CH2)n, O or S, wherein n is 0, 1, 2, 3 or 4; Rc is a lactone group; and m is 1, 2 or 3. The polymer of the present invention can be used to form the chemical amplified photoresist composition, which can then be applied to general lithography processes, and particularly to the lithography of ArF, KrF or the like light source, and exhibit excellent resolution, figures and photosensitivity.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: October 28, 2003
    Assignee: Everlight USA, Inc.
    Inventors: Chi-Sheng Chen, Yen-Cheng Li, Meng-Hsum Cheng
  • Patent number: 6441115
    Abstract: The present invention provides a photosensitive polymer containing the following structure unit of formula (II): Wherein R is hydrogen or C1-C4 alkyl group; R′ is C1-C4 alkyl group; n is an integer of 2, 3, 4, 5 or 6. This photosensitive polymer also relates to chemical amplified photoresist composition. This chemical amplified photoresist composition can be applied to general lithography processes, especially in 193 nm lithography and the patterns formed from the photoresist composition exhibit excellent resolution and photosensitivity.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: August 27, 2002
    Assignee: Everlight USA, Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin
  • Patent number: 6376700
    Abstract: An alicyclic compound of the formula (1) is disclosed: wherein R1 and R2 each independently is a hydroxyl group, a C1-8 hydroxyalkyl group, or a C3-8 hydroxycycloalkyl group; R3, R4 and R5 each independently is a hydrogen, a C1-8 hydroxyalkyl group, a C1-6 carboxylic acid or a C3-8 carboxylic acid ester; k is an integer of 0, 1, 2, 3, 4, 5 or 6. The compound of the formula (1) can be applied to dissolution inhibitors for preparing positive photoresist composition.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: April 23, 2002
    Assignee: Everlight USA, Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin, Wen-Chieh Wang
  • Patent number: 6316159
    Abstract: A chemical amplified photoresist composition comprising a photosensitive polymer containing the following structure unit of formula (II): Wherein R is hydrogen or C1-C4 alkyl group; R′ is C1-C4 alkyl group; n is an integer of 2, 3, 4, 5 or 6. This chemical amplified photoresist composition can be applied to general lithography processes, especially in 193 nm lithography and the patterns formed from the photoresist exhibit excellent resolution and photosensitivity.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: November 13, 2001
    Assignee: Everlight USA, Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin
  • Patent number: 6294309
    Abstract: A positive photoresist composition comprising a polymer, a photoactived agent and an dissolution inhibitor represented by the following formula (1): wherein R1, R2, R3, R4, R5 and k are defined in the specification. The photoresist composition of the present invention is useful as a chemically amplified type resist when exposed to deep UV light from a KrF and ArF excimer laser.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: September 25, 2001
    Assignee: Everlight USA, Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin, Wen-Chieh Wang
  • Patent number: 6271412
    Abstract: This invention provides a compound of the formula (I): wherein R is hydrogen or C1-C4 alkyl group; R′ is C1-C4 alkyl group; n is an integer of 2, 3, 4, 5 or 6. The compound of formula (I) can be polymerized or copolymerized to form a photosensitive polymer or copolymer.
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: August 7, 2001
    Assignee: Everlight USA, Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin
  • Patent number: 6265131
    Abstract: A positive photoresist composition comprising a polymer, a photoactived agent and an dissolution inhibitor represented by the following formula (1): wherein R1 and R2 each independently is a hydroxyl group, a C1-8 hydroxyalkyl group, or a C3-8 hydroxycycloalkyl group; R3, R4 and R5 each independently is a hydrogen, a C1-8 hydroxyalkyl group, a C1-6 carboxylic acid or a C3-8 carboxylic acid ester; k is an integer of 0, 1, 2, 3, 4, 5 or 6. The photoresist composition has high transparency to deep UV light and is capable of forming good fine patterns, roughness and high sensitivity, thus being useful as a chemically amplified type resist when exposed to deep UV light from an KrF and ArF excimer laser.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: July 24, 2001
    Assignee: Everlight USA. Inc.
    Inventors: Shang-Wern Chang, Yen-Cheng Li, Shang-Ho Lin, Wen-Chieh Wang