摘要:
The present invention provides photoresist polymers, processes for producing the same, photoresist compositions comprising such polymers, and processes for producing a photoresist pattern using such photoresist compositions. In particular, photoresist polymers of the present invention comprise a moiety of the Formula: where R1, R2, R3 and R4 are those defined herein. Photoresist polymers of the present invention have a relatively high etching resistance, and therefore are useful in thin resist processes and bilayer photoresist processes. Moreover, photoresist polymers of the present invention have a high contrast ratio between the exposed region and the non-exposed region.
摘要:
The present invention provides a polymer that can be used as an anti-refelctive coating (ARC) polymer, an ARC composition comprising the same, methods for producing the same, and methods for using the same. The polymer of the present invention is particularly useful in a submicrolithographic process, for example, using KrF (248 nm), ArF (193 nm), or F2 (157 nm) laser as a light source. The polymer of the present invention comprises a chromophore that is capable of absorbing light at the wavelengths used in a submicrolithographic process. Thus, the ARC of the present invention significantly reduces or prevents back reflection of light and the problem of the CD alteration caused by the diffracted and/or reflected light. The ARC of the present invention also significantly reduces or eliminates the standing wave effect and reflective notching. Therefore, the polymer of the present invention can be used to produce a stable ultrafine pattern that is suitable in manufacturing of 64 M, 256 M, 1 G, 4 G and 16 G DRAM semiconductor devices. Moreover, the ARC of the present invention significantly improves the production yield, of such semiconductor devices.
摘要:
Polymers are disclosed having the following formula 1 or 2: Polymers of the present invention can be used as an ARC material useful for submicrolithography processes using 248 nm KrF, 193 nm ArF and 157 nm F2 lasers. The polymers contain a chromophore substituent that exhibits sufficient absorbance at the wavelengths useful for the submicrolithography process. The ARC prevents back reflection of light from lower layers and the alteration of the CD by diffracted and reflected light from the lower layers. The ARC also eliminates standing waves and reflective notching due to the optical properties of lower layers on the wafer and to changes in the thickness of the photosensitive film applied thereon, thereby resulting in the stable formation of ultrafine patterns suitable for 64 M, 256 M, 1 G, 4 G and 16 G DRAMs and a great improvement in the production yield.
摘要:
The present invention provides a photoresist monomer represented by the following formula 2; a photoresist copolymer represented by the following formula 100; and a photoresist composition containing the same. wherein, R1 and R2 are independently —COOH or —R—COOH; and R is a substituted or unsubstituted (C1-C10) alkyl. wherein, R1 and R2 are independently —COOH or —R—COOH ; R is a substituted or unsubstituted (C1-C10) alkyl; R3 is —COOR* or —R′COOR*; R* is an acid labile group; R′ is a substituted or unsubstituted (C1-C10) alkyl; R4 is H or R3; R5 is a substituted or unsubstituted (C1-C10) alkyl; and a:b:c is the polymerization ratio of the comonomer.
摘要:
The present invention relates to a carboxyl-containing alicyclic compound represented by Chemical Formula 1: [formula 1] wherein, R1 and R2, which may be identical to or different from each other, represent hydrogen or a tert-butyl group; X represents hydrogen, hydroxy or oxygen; and n represents a number from 1 to 3. Compounds of the present invention are useful as monomers in a photoresist resin, and in a process for preparing the same.
摘要:
The present invention relates to organic anti-reflective coating polymers and preparation methods therefor. Anti-reflective coatings are used in a semiconductor device during photolithography processes to prevent the reflection of light from lower layers of the device, or resulting from changes in the thickness of the photoresist layer, and to eliminate the standing wave effect when ArF light is used. The present invention also relates to anti-reflective compositions and coatings containing these organic anti-reflective coating polymers, alone or in combination with certain light-absorbing compounds, and preparation methods therefor. When the polymers of the present invention are used in an anti-reflective coating in a photolithography process for forming submicro-patterns, the resultant elimination of changes in CD due to diffractive and reflective lights originating from lower layers increases the product yield in the formation of submicro-patterns during the manufacture of 64 M, 256 M, 1G, 4G and 16G DRAM semiconductor devices.
摘要:
The present invention relates to a semiconductor device using a copolymer-containing photoresist, and a process for manufacturing the same. As a norbornene derivative (monomer) having a hydrophilic group is synthesized and introduced to the backbone chain of a polymer, the polymer according to the present invention has excellent etching resistance and heat resistance, which are the characteristic points of alicyclic olefin structure, and provide excellent resolution due to prominent enhancement of adhesiveness resulted from introducing a hydrophilic group (—OH).
摘要:
Proposed are a guider for a spinal operation and a cage therefor. The guider includes a sliding portion configured to guide a cage for a spinal operation and a holder to a surgical site, a head of the sliding portion being inserted into a human body region where a surgical incision is made for the spinal operation, and the cage for a spinal operation being combined with the holder; a support portion combined with one side of the sliding portion and thus supporting the sliding portion; and a handle combined with the support portion.
摘要:
The present invention relates generally to a method of unilateral biportal endoscopy and diamond shaver used in the same. The method includes: securing pathways for a working portal and an endoscopic portal that extend toward a surgical site in the body of a patient and are distanced from each other; inserting a surgical instrument required for surgery into the secured working portal; inserting an endoscope into the endoscopic portal; performing surgery using the surgical instrument inserted into the working portal while monitoring the surgical site through the endoscope; removing the surgical instrument and the endoscope after the performing the surgery; and suturing of suturing entrances of the working portal and the endoscopic portal.
摘要:
An apparatus configured to generate control data. The apparatus includes a counter unit configured to receive an input signal having a first state and a second state and counts the first state in the input signal, a delay unit configured to delay the count value for a predetermined time, and a data output unit configured to receive the delayed count value from the counter unit and then generate the control data based on the delayed count value.