• Title/Summary/Keyword: Photolithographic

Search Result 107, Processing Time 0.037 seconds

Synthesis of Imide Monomers for Application to Organic Photosensitive Interdielectric Layer

  • Kwon, Hyeok-Yong;Vu, Quang Hung;Lee, Yun-Soo;Park, Lee-Soon
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2008.10a
    • /
    • pp.816-819
    • /
    • 2008
  • A negative photoresist formulation was developed utilizing synthesized UV monomers containing imide linkage, photoinitiator, UV oligomer, and alkali developable polymer matrix. It was found that via-holes with good resolution, high transmittance and thermal resistance could be obtained by photolithographic process utilizing the negative-type photoresist formulations.

  • PDF

Advances in Materials for Printed Transistors

  • Ong, Beng S.
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2008.10a
    • /
    • pp.1065-1066
    • /
    • 2008
  • Printed thin-film transistors (TFTs) have received profound interests as an alternative to their silicon counterparts for use in fabricating next-Gen microelectronics by virtue of projected low manufacturing cost and certain salient features (e.g., thin and lightweight characteristics, structural flexibility, etc.) that printed TFTs bring to device architecture. The economic advantages stem from engaging low-cost printing techniques (e.g., screen printing, gravure, flexography, etc.) for deposition and patterning in place of traditionally costly high-vacuum, high-temperature photolithographic processes. To render printing TFTs possible, solution processable materials are necessary.

  • PDF

A five mask CMOS LTPS process with LDD and only one ion implantation step

  • Schalberger, Patrick;Persidis, Efstathios;Fruehauf, Norbert
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2006.08a
    • /
    • pp.1645-1648
    • /
    • 2006
  • We have developed a CMOS LTPS process, which requires only five photolithographic masks and only one ion doping step. Single TFTs, inverters, ring oscillators and shift registers were fabricated. N- and p-channel devices reached field effect mobilities of $173cm^2/Vs$ and $47cm^2/Vs$, respectively.

  • PDF

Address Electrode for PDP by Ink-Jet Method

  • Park, Lee-Soon;Im, Moo-Sik;Jung, Young-Chul
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2003.07a
    • /
    • pp.775-777
    • /
    • 2003
  • Several methods are available for the fabrication of electrode pattern for the plasma display panel(PDP) including screen printing and photolithographic method. Piezo type ink-jet printing method is considered to the method of choice for electrode patterning in manufacturing of PDP. Both silver ink and absorbent layer paste formulation were developed for ink-jet printing of electrode pattern. The ink-jet printing of silver electrode with preformed absorbent layer was especially suitable for the patterning of address electrode for high resolution PDP.

  • PDF

A study on the design of bandpass filters using SAW components (탄성표면파 소자를 이용한 대역통과 여파기의 설계에 관한 연구)

  • 전계석;황금찬;김봉열
    • 전기의세계
    • /
    • v.31 no.2
    • /
    • pp.141-146
    • /
    • 1982
  • In this paper, surface acoustic wave (SAW) bandpass filter is designed using the Fourier series approach and the I$_{0}$-shin window function. And also we studied a method to realize SAW filter using the apodized ID transducer which was fabricated with aluminum metallization of about 1500 A over .deg. thickness on Y-cut Z-propagating LiNbO$_{3}$, crystal by photolithographic technique (lift-off method). Experimental results on SAW bandpass filter responses show good agreements with the theoretical characteristics.s.

  • PDF

Photolithographic Formation of GOD Immobilized Membranes for ISFET Glucose Sensors (ISFET 포도당센서를 위한 GOD 고정화막의 사진식각 형성법)

  • 김창수;최성문;서화일;김의락;손병기
    • Journal of the Korean Institute of Telematics and Electronics A
    • /
    • v.29A no.4
    • /
    • pp.58-63
    • /
    • 1992
  • Photolithography techniques were applied for immobilization of GOD membrane on the pH-ISFET with photo-sensitive polymers to realize ISEFT glucose sensor. This IC technology-compatible glucose sensor showed good sensing characteristics in the wide range of 10-1000 mg/dl glucose concentrations.

  • PDF

A Five Mask CMOS LTPS Process With LDD and Only One Ion Implantation Step

  • Schalberger, Patrick;Persidis, Efstathios;Fruehauf, Norbert
    • Journal of Information Display
    • /
    • v.8 no.1
    • /
    • pp.1-5
    • /
    • 2007
  • We have developed a CMOS LTPS process which requires only five photolithographic masks and only one ion doping step. Drain/Source areas of NMOS TFTs were formed by PECVD deposition of a highly doped precursor layer while PMOS contact areas were defined by ion implantation. Single TFTs, inverters, ring oscillators and shift registers were fabricated. N and p-channel devices reached field effect mobilities of $173cm^2$/Vs and $47cm^2$/Vs, respectively.

Fabrication of Microstrip Band-Pass Filter using HTS Thin Film (고온초전도 박막을 이용한 마이크로스트립 대역통과 필터의 제작)

  • 허원일;정동철;김민기;임성훈;한병성
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • 1996.11a
    • /
    • pp.389-392
    • /
    • 1996
  • The recent development of high temperature superconducting epitaxial thin film offer great potential for planar passive microwave application such as ring resonator, filters, transmission lines, and antennas. This paper describes the fundamental properties of Microstrip Band-Pass Filter using HTS Thin Film and its application to microwave devices. In order to fabricate HTS microstrip multiple filters, We have grown laser ablated HTS thin films, patterned by photolithographic process and wet etching processes intro HTS microwave devices.

  • PDF

Photolithographic Properties of Photosensitive Ag Paste for Low Temperature Cofiring (저온동시소성용 감광성 은(Ag)페이스트의 광식각 특성)

  • Park, Seong-Dae;Kang, Na-Min;Lim, Jin-Kyu;Kim, Dong-Kook;Kang, Nam-Kee;Park, Jong-Chul
    • Journal of the Korean Ceramic Society
    • /
    • v.41 no.4
    • /
    • pp.313-322
    • /
    • 2004
  • Thick film photolithography is a new technology in that the lithography process such as exposure and development is applied to the conventional thick film process including screen-printing. In this research, low-temperature cofireable silver paste, which enabled the formation of thick film fine-line using photolithographic technology, was developed. The optimum composition for fine-line forming was studied by adjusting the amounts of silver powder, polymer and monomer, and the additional amount of photoinitiator, and then the effect of processing parameter such as exposing dose on the formation of fine-line was also tested. As the result, it was found that the ratio of polymer to monomer, silver powder loading, and the amount of photoinitiator were the main factors affecting the resolution of fine-line. The developed photosensitive silver paste was printed on low-temperature cofireable green sheet, then dried, exposed, developed in aqueous process, laminated, and fired. Results showed that the thick film fine-line under 20$\mu\textrm{m}$ width could be obtained after cofiring.