플라즈마 디스플레이 패널을 위한 새로운 방전 논리소자에 관한 연구

염정덕,정영철 한국조명전기설비학회 2002 조명·전기설비학회논문지 Vol.16 No.1

The plasma display panel with the electrode structure of new discharge AND gate was proposed and the driving system for experiment was developed. And discharge AND gate operation was verified. Discharge AND gate operated by the operation speed of 8${\mu}\textrm{s}$ and the operation margin of 20V. It was known to be able to control the discharge of the adjoining scan electrode accurately. Because this method uses the DC discharge, the control of the discharge can be facilitated compared with conventional discharge AND gate. Moreover, because the input discharge and the output discharge of AND gate are separate, the display discharge can be prevented from passing AND gate. Therefore it is possible to app1y to the large screen plasma display. And the decrease of contrast ratio does not occur because the scanning discharge does not influence the picture quality. 새로운 방전 AND gate를 가지는 플라즈마 디스플레이 패널이 제안되었고 이를 검증하기 위한 구동 회로 시스템이 개발되었다. 그리고 방전 AND gate의 동작이 검증되었다. 방전 AND gate는 8$\mu\textrm{s}$의 동작속도와 20V의 동작마진을 가지고 동작하였으며 인근 주사라인의 방전을 정확히 제어할 수 있다는 것을 알았다. 이 방식은 직류 방전을 사용함으로 종래의 방전 AND gate에 비해 손쉽게 방전을 제어할 수가 있다. 더구나 AND gate의 입력방전과 출력방전이 분리되어 동작하기 때문에 디스플레이 방전이 AND gate를 통과하는 것을 방지할 수 있다. 그러므로 대화면 플라즈마 디스플레이에의 적용이 가능하고 주사방전이 화질에 영향을 주지 않으므로 명암비의 저하가 일어나지 않는다.

Low Cost Driving System for Plasma Display Panels by Eliminating Path Switches and Merging Power Switches

Lee, Dong-Myung,Hyun, Dong-Seok The Korean Institute of Power Electronics 2007 JOURNAL OF POWER ELECTRONICS Vol.7 No.4

Recently, plasma display panels (PDP) have become the most promising candidate in the market for large screen size flat panel displays. PDPs have many merits such as a fast display response time and wide viewing angle. However, there are still concerns about high cost because they require complex driving circuits composed of high power switching devices to generate various voltage waveforms for three operational modes of reset, scan, and sustain. Conventional PDP driving circuits use path switches for voltage separation and a scan switch to offer a scan voltage for reset and scan operations, respectively. In addition, there exist reset switches to initialize PDPs by regulating the wall charge conditions with ramp shaped pulses, which means the necessity of specific power devices for the reset operation. Because power for the plasma discharge accompanied by a large current is transferred to a panel via path switches, high power rating switches are used for path switches. Therefore, this paper proposes a novel low-cost PDP driving scheme achieved by not only eliminating path switches but also merging the function of reset switches into other switches used for sustain or scan operations. The simulated voltage waveforms of the proposed topology and experimental results implemented in a 42-inch panel to demonstrate the validity of using a new gate driver that merges the functions of power switches are presented.

New Dual Sustaining Driver Using Two Different Energy Recovery Circuits for Large-Sized Plasma Display Panels (PDPs)

Kang-Hyun Yi,Seong-Wook Choi,Gun-Woo Moon IEEE 2009 IEEE transactions on industrial electronics Vol.56 No.1

<P>A new dual sustaining driver using two different energy recovery circuits (ERCs) for large-sized plasma display panels (PDPs) is proposed. The proposed sustaining driver has two H-bridge inverters to be used in splitting a panel into two. Two ERCs are employed to compensate energy for charging or discharging the panel. When PDPs with the two divided panels are driven by the proposed driver, there are good uniformity in gas discharge and reduction of power consumption by the two different ERCs used in charging and discharging the panel. As results, the proposed sustaining driver has low conduction loss, diminished switching loss of all main power switches, and decrease of reactive power consumption for recovering energy. Moreover, production cost can be reduced because of the simplified ERC for discharging the panel and no additional driving circuits. To verify the operation of the proposed circuit, experimental results will be shown by using a 42-in panel.</P>

Low Cost Driving System for Plasma Display Panels by Eliminating Path Switches and Merging Power Switches

Dong-Myung Lee,Dong-Seok Hyun 전력전자학회 2007 JOURNAL OF POWER ELECTRONICS Vol.7 No.4

Recently, plasma display panels (PDP) have become the most promising candidate in the market for large screen size flat panel displays. PDPs have many merits such as a fast display response time and wide viewing angle. However, there are still concerns about high cost because they require complex driving circuits composed of high power switching devices to generate various voltage waveforms for three operational modes of reset, scan, and sustain. Conventional PDP driving circuits use path switches for voltage separation and a scan switch to offer a scan voltage for reset and scan operations, respectively. In addition, there exist reset switches to initialize PDPs by regulating the wall charge conditions with ramp shaped pulses, which means the necessity of specific power devices for the reset operation. Because power for the plasma discharge accompanied by a large current is transferred to a panel via path switches, high power rating switches are used for path switches. Therefore, this paper proposes a novel low-cost PDP driving scheme achieved by not only eliminating path switches but also merging the function of reset switches into other switches used for sustain or scan operations. The simulated voltage waveforms of the proposed topology and experimental results implemented in a 42-inch panel to demonstrate the validity of using a new gate driver that merges the functions of power switches are presented.

Plasma Display Panel용 기판 유리용융체의 내화물 침식

김기동,정현수,김효광,Kim, Ki-Dong,Jung, Hyun-Su,Kim, Hyo-Kwang 한국세라믹학회 2007 한국세라믹학회지 Vol.44 No.1

For self-developed alkali-alkaline earth-silicate and commercial glass melts for plasma display panel substrate, the corrosion behavior of fused casting refractory consisting of $Al_2O_3-ZrO_2-SiO_2$ was examined at the temperature corresponding to $10^2\;dPa{\cdot}s$ of melt viscosity by static finger methode. The corroded refractory specimens showed a typical concave shape due to interfacial convection of melts at their flux line. However, the corrosion thickness by commercial glass melts was $6\sim10$ times comparing to that by the self?developed melts. From the view point of the glass composition and the role of alkaline earth in glass network, it was discussed the effect of alkali/alkaline earth diffusion and temperature on the refractory corrosion.

A Sub-field Rearrangement Driving Method for Reducing Dynamic False Contour in Plasma Display Panels

Lee, Seung-Yong,Choi, Byong-Deok The Korean Infomation Display Society 2006 Journal of information display Vol.7 No.1

A sub-field rearrangement driving method has been proposed to reduce a DFC (Dynamic False Contour) phenomenon in plasma display panels. The proposed driving method expresses 256 gray levels with 16 sub-fields, while conventional one uses only 8 sub-fields. Notwithstanding the increase in the number of sub-fields, the display time is similar to the conventional 8 sub-fields driving method by appropriate choosing selective writing and selective erasing for sub-fields.

Nanoparticle Phosphors Synthesized by Inductively Controlled Plasma Process for Plasma Based Display

양충진,박종일,최승덕,박언병,이영주 한국세라믹학회 2008 한국세라믹학회지 Vol.45 No.7

Optimized volume production of nanoscale phosphor powders synthesized by radio frequency (RF) plasma process was developed for the application to plasma display panels. The nano powders were synthesized by feeding the both solid and liquid type precursors, and nanoparticle phosphors were characterized in terms of particle size, shape, and photoluminescence (PL) intensities. Computer simulation was performed in advance to determine the process parameters, and nano phosphors were evaluated by comparing with current commercial micron-sized phosphor powders. Practical feeding of both solid and liquid type precursor was proved to be effective for volume production.The developed process showed a potential as a production method for red, blue and green phosphor although the PL intensity still needs further improvement. Optimized volume production of nanoscale phosphor powders synthesized by radio frequency (RF) plasma process was developed for the application to plasma display panels. The nano powders were synthesized by feeding the both solid and liquid type precursors, and nanoparticle phosphors were characterized in terms of particle size, shape, and photoluminescence (PL) intensities. Computer simulation was performed in advance to determine the process parameters, and nano phosphors were evaluated by comparing with current commercial micron-sized phosphor powders. Practical feeding of both solid and liquid type precursor was proved to be effective for volume production.The developed process showed a potential as a production method for red, blue and green phosphor although the PL intensity still needs further improvement.

Effect of Gold Nanorods in an MgO Protective Layer of AC Plasma Display Panels

Cho, Seok Ho,Lee, Seong Min,Kim, Woo Hyun,Choi, Kyung Cheol American Chemical Society 2015 ACS APPLIED MATERIALS & INTERFACES Vol.7 No.14

<P>We propose a modified MgO protective layer for alternating current plasma display panels. The modified MgO protective layer of the panel tested here has a structure that incorporates silica-coated Au nanorods (NRs), leading to localized surface plasmon resonance (LSPR) in the near-infrared (IR) region. The silica-coated Au NRs were synthesized by a simple chemical method and inserted into an MgO protective layer using an air-spray method. The operating voltage of the proposed structure was decreased by 10 V. The luminance and luminous efficacy of the test panel part with the silica-coated Au NRs both increased by about 15%. According to the measured results of the IR response time, the sustain discharge time lag was reduced. In addition, by inserting the silica-coated Au NRs into the MgO protective layer, a decrease of the IR emission proceeding from the plasma discharge was acquired. Finally, we investigated the LSPR effect of the silica-coated Au NRs in a simulation with a finite-difference time domain method.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2015/aamick.2015.7.issue-14/am509009v/production/images/medium/am-2014-09009v_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am509009v'>ACS Electronic Supporting Info</A></P>

교류형 플라즈마 표시기의 신 대향형 구조에 대한 방전 특성 분석

裵賢淑(Hyun-Sook Bae),黃琪雄(Ki-Woong Whang) 대한전기학회 2008 전기학회논문지 Vol.57 No.9

We proposed the new structure of ac plasma display panel(PDP) to improve the luminous efficacy and driving voltage characteristics. Through two-dimensional numerical simulations, we analyzed the effects of new counter discharge type, which consists of counter sustain electrodes and auxiliary electrodes. Generally, an advantage of AC PDP with the counter sustain electrodes has been known for the driving characteristics of the low voltage. In this work, the new counter structure using the ignition discharge by the auxiliary pulse applied to the address electrode showed the result of the increased luminous efficacy. The short gap discharge between two auxiliary electrodes on the front plate could intensity the long gap discharge between counter electrodes. The reliability of simulation result could be confirmed by the experimental result in the test panel.

A Highly Efficient AC-PDP Driver Featuring an Energy Recovery Function in Sustaining Mode Operation

Kang, Feel-Soon,Park, Sung-Jun,Kim, Cheul-U The Korean Institute of Electrical Engineers 2002 KIEE International Transactions on Electrical Mach Vol.b2 No.3

A simple sustain driver employing an energy recovery function is proposed as a highly efficient driver of a plasma display panel. The proposed driver uses dual resonance in the sustaining mode operation: a main resonance between an inductor and an external capacitor to produce alternative pulses and a sub-resonance between an inductor and a panel to recover the energy consumption by the capacitive displacement current of the PDP. The operational principle and design procedure of the proposed circuit are presented with theoretical analysis. The operation of the proposed sustain driver is verified through simulation and experiments based on a 7.5-inch-diagonal panel with a 200 KHz operating frequency.