• Title/Summary/Keyword: Wiring Device

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3D Integration using Bumpless Wafer-on-Wafer (WOW) Technology (Bumpless 접속 기술을 이용한 웨이퍼 레벨 3차원 적층 기술)

  • Kim, Young Suk
    • Journal of the Microelectronics and Packaging Society
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    • v.19 no.4
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    • pp.71-78
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    • 2012
  • This paper describes trends in conventional scaling compared with advanced technologies such as 3D integration (3DI) and bumpless through-silicon via (TSV) processes, as well as the characteristics of CMOS (Complementary Metal Oxide Semiconductor) Logic device after thinning the wafers to less than $10{\mu}m$. Each module process including thinning, stacking, and TSV, is optimized for 3D Wafer-on-Wafer (WOW) application. Optimization results are discussed with valuable data in detail. Since vertical wiring of bumpless TSV can be connected directly to the upper and lower substrates by self-alignment, bumps are not necessary when TSV interconnects are used.

The study of shape of electrodes and I-V characteristics for Ultraviolet LED

  • Trung, Nguyen Huu;Dang, Vu The;Hieu, Nguyen Van
    • Journal of IKEEE
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    • v.17 no.3
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    • pp.221-228
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    • 2013
  • About functional parameters of a LED/UVLED (Light Emitting Diode/Ultra Violet LED), one of the most important parameters is the I-V characteristic. By researching factors affect to the I-V characteristic of uvled, we found that beside of the structure of the device itself, there is the influence of the electrode materials, electrode shapes, the process of wiring and packaging. In this work, we want to improve the performance of UVLED to find out the optimal mask design principles. The study is based on theoretical mathematical models, as well as the use of simulation software tool Comsol. From all results obtained, the team has improved mask design to manufacture electrodes for GaN-based UVLED. Electrode masks are designed by three softwares, which are Intellisuite, Klayout and AutoCad. Intellisuite masks would be used in fabrication simulation while Klayout and AutoCad are used to fabricate electrodes in experiments. As well as, we silmulated the structure of an uvled 355nm emission wavelength by TCAD software, in order to compare with uvled sample that has the same emission wavelength.

분산 제어기 구조를 갖는 마스터 암의 기구학 설계 및 해석

  • Lee, Jangwook;Kim, Yoonsang;Lee, Sooyong;Kim, Munsang
    • Journal of Institute of Control, Robotics and Systems
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    • v.7 no.6
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    • pp.532-539
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    • 2001
  • In robot teleoperation, much research has been carried out to control the slave robot from remote site. One of the essential devices for robot teleoperation is the masterarm, which is a path command generating device worn on human arm. In this paper, a new masterarm based on human kinematics is proposed. Its controller is based on the distributed controller architecture composed of two controller parts: a host controller and a set of satellite controllers. Each satellite controller measures the corresponding joint angle, while the host controller performs forward and inverse kinematics calculation. This distributed controller architecture can make the data updating faster, which allows to implement real-time implementation. The host controller and the satellited controllers are networked via three-wire daisy-chained SPI(Serial Peripheral Interface) protocol, so this architecture makes the electrical wiring very simple, and enhances maintenance. Analytical method for finding three additional unknown joint angles is derived using only three measured angles for each shoulder and wrist, which makes th hardware implementation very simple by minimizing the required number of satellite controllers. Finally, the simulation and experiment results are given to demonstrate the usefulness and performance of the proposed masterarm.

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A Study on Operating Position Sensing System of Pull Cord Switches Using Power Line Communication (전력선 통신을 이용한 풀 코드 스위치의 동작위치 인식 시스템에 대한 연구)

  • Choi, Nam-Sup;Lee, Buhm
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.10a
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    • pp.745-748
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    • 2003
  • This paper presents a study on pull cord switch system which is employed in various industry for emergency stop of the equipments. By using power line communication(PLC) technique, in this paper, a new method for operation position detection of pull cord switch is suggested without complicated wiring of separate cables which utilize only 2 lines. Also, using control function of PLC IC, a reset signal for each switch reset can be implemented in the switch status control/sensing device. Finally, this paper shows validity and practical applicability of the proposed operating position sensing system of pull cord switch by implementing the system and revealing the response time and signal through the PLC line.

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Design of Extendable QCA 4-to-2 Encoder Based on Majority Gate (확장성을 고려한 다수결 게이트 기반의 QCA 4-to-2 인코더 설계)

  • Kim, Tae-Hwan;Jeon, Jun-Cheol
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.26 no.3
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    • pp.603-608
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    • 2016
  • Encoding means converting or processing form or format of information into the other forms to standardize, secure, improve processing speed, store saving spaces and etc. Also, Encoding is converting the information so as to do transmit other form on the sender's information to the receiver in Information-Communication. The device that is conducting the processing is called the encoder. In this dissertation, proposes an encoder of the most basic 4-to-2 encoder. proposed encoder consists of two OR-gate and the proposed structure designs and optimize the spacing of the cell for the purpose of minimizing noise between wiring. Through QCADesigner conducts simulation of the proposed encoder and analyzes the results confirm the effectiveness.

Implement of Watt-Hour Meter Monitoring System by Internet Map Based GUI using Power Line Communication (전력선 통신을 이용한 인터넷 맵 연동 전자계량기 모니터링 시스템 구현)

  • Park, Keun-Soo;Lee, Young-Ho
    • The Journal of the Korea institute of electronic communication sciences
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    • v.8 no.10
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    • pp.1435-1441
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    • 2013
  • This paper deals a watt-hour meter monitor system applying a Power Line Communication (PLC) MODEM and a Data Concentrator Unit (DCU) which can apply to Internet map based Graphical User Interface (GUI). The PLC MODEM is profitable by saving the cost of installing dedicated wiring, and Internet map GUI also is able to contribute an easy access to monitoring system for non export users. This system makes it possible to monitor the amount of electricity of previous/ current month metering data via Internet mapping service. The implement system can easily apply a PC-management for the electric charges and maintenance with gathering the metering data.

Distributions of the Magnetic Flux Density Near Down-Conductors Due to Various Impulse Currents (임펄스전류에 의한 인하도선 주위에서 자속밀도의 분포)

  • 이복희;장근철;이수봉;강성만;이승칠
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.53 no.2
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    • pp.109-115
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    • 2004
  • This paper deals with the behaviors of magnetic flux density near down-conductors by lightning currents. The background on the principle of magnetic flux density measurements using the RL self-integrating magnetic field sensor was described. The magnetic flux density measuring device consisting of RL self-integrating magnetic field sensor and differential amplifier was designed and fabricated. The frequency bandwidth of the magnetic flux density measuring system ranges from 200 Hz to 300 KHz and the response sensitivity was 0.126 $\mu$T/㎷ The distributions of the magnetic flux density near down-conductors due to impulse currents with various rise times were analyzed as a parameter of the bonding conditions and materials of conductor and wiring conduits. The magnetic flux density due to impulse currents was inversely proportional to the distance between the down-conductor and measuring point. The amplitude of the magnetic flux density for PVC Pipe with down-conductor was 72 $\mu$T/㎷ at the distance of 1m and was higher than for steel conduits and coaxial cable. Finally the magnetic flux density is increased with increasing the di/dt it and oscillation frequency of lightning currents in this experimental ranges.

A Study on Real-time Data Acquisition System and Denoising for Energy Saving Device (에너지 절약 장치용 실시간 데이터 획득 시스템 구현과 잡음제거에 관한 연구)

  • Huh, Keol;Choi, Yong-Kil;Jeong, Won-Kyo;Hoang, Chan-Ku
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2004.05b
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    • pp.47-53
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    • 2004
  • The paper shows that the combination of the hardware, NI PCI 6110E board and the software, Fourier and continuous wavelet transform(CWT) can be used to implement for extracting the important features of the real-time signal. The results confirmed that CWT produces the fast computation enough for the application of the real-time signal processing except the negligible time delay. In denoising case, because of the lack of translation invariance of wavelet basis, traditional wavelet thresholding leads to pseudo-Gibbs phenomena in the vicinity of discontinuities of signal. In this paper, in order to reduce the pseudo-Gibbs phenomena, wavelet coefficients are threshold and reconstruction algorithm is implement through shift-invariant gibbs free denoising algorithm based on wavelet transform footprint. The proposed algorithm can potentially be extended to more general signals like piecewise smooth signals and represents an effective solution to problems like signal denoising.

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Development of Tungsten CMP (Chemical Mechanical Planarization) Slurry using New Abrasive Particle (새로운 연마입자를 이용한 텅스텐 슬러리 개발)

  • Yu, Young-Sam;Kang, Young-Jae;Kim, In-Kwon;Hong, Yi-Koan;Park, Jin-Goo;Jung, Seok-Jo;Byun, Jung-Hwan;Kim, Moon-Sung
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.571-572
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    • 2006
  • Tungsten CMP needs interconnect of semiconductor device ULSI chip and metal plug formation, CMP technology is essential indispensable method for local planarization. This Slurry development also for tungsten CMP is important, slurry of metal wiring material that is used present is depending real condition abroad. It is target that this research makes slurry of efficiency that overmatch slurry that is such than existing because focus and use colloidal silica by abrasive particle to internal production technology development. Compared selectivity of slurry that is developed with competitor slurry using 8" tungsten wafer and 8" oxide wafer in this experiment. And removal rate measures about density change of $H_2O_2$ and Fe particle. Also, corrosion potential and current density measure about Fe ion and Fe particle. As a result, selectivity find 83:1, and expressed similar removal rate and corrosion potential and current density value comparing with competitor slurry.

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Design and Fabrication of Magnetostrictive Transducers for Scanning OPMT Development (주사형 OPMT 개발을 위한 자왜형 초음파 변환기 설계 및 제작)

  • Lee, Ho-Cheol;Kim, Hyeng-Yoon;Kim, Y.Y.
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.11a
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    • pp.856-859
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    • 2005
  • The OPMT(Orientation-adjustable Patch-type Magnetostrictive Transducer) was proposed as a tool for generating and measuring the ultrasonic Lamb wave in plate type structures. This sensor has a lot of new features compared to the traditional piezo-type ultrasonic transducers. As an example, it does not need any kind of wiring for lunching or measuring ultrasonic waves. But it has also definite limitation for practical usage as a nondestructive testing tool in that it cannot help rotating the direction of ultrasonic wave manually. The idea for 'scanning OPMT' is proposed in this respect. Two kinds of basic ideas for rotating the wave direction not manually but electrically are proposed. The fabrication of the transducer and the testing for Identifying the primary characteristics are done for one of the proposed transducers. The results says that there are the possibilities as a new tool for NDE in that the proposed transducer follows well the characteristics of the traditional OPMT. But there are also the 1imitations to overcome.

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