• 한국정보디스플레이학회:학술대회논문집
• /
• 2003.07a
• /
• pp.351-355
• /
• 2003

In this paper, a new barrier rib forming method of embossed barrier rib (EBR) formation process for the PDP rear panel was introduced. The process is mainly composed of green sheet fabrication, lamination of the green sheet on the rear glass panel having data electrodes, and roll embossing followed by firing. The EBR process has two advantages over the conventional barrier rib forming methods. One is the process requires less equipment investment than the conventional methods by about 20% of the current rear panel fabrication equipment investment owing to the simplified fabrication process. The other advantage is its reduced rear panel manufacturing cost by eliminating the time consuming and complicated processes and waste of materials in the conventional methods. In this study, general procedure of EBR fabrication process is described and the characteristics of prototype PDP using EBR panel are discussed.

• 제어로봇시스템학회:학술대회논문집
• /
• 2004.08a
• /
• pp.126-131
• /
• 2004

The popularity of flat-panel display(FPD), including plasma display panel(PDP) and liquid-crystal display(LCD), has given rise to the need to streamline their production. In these days, PDP is one of the most popular display devices because of its expansion of manufacturing process and simplicity. Bus electrodes, sustain electrodes, barrier ribs and RGB phosphors are patterned on PDP panel to display an image. Since a minute damage on the pattern can cause a serious defect to display, it is important to inspect the pattern precisely. In this paper, an automatic inspection system of repeated pattern in PDP panel has been introduced to find the defect, such as open, short, dirt, island, and so on. And the inspection system has been operated in the mass production line of PDP.

• 전기의세계
• /
• v.38 no.10
• /
• pp.40-44
• /
• 1989

PDP(Plasma display Panel)는 Gas 방전을 하여 발생하는 빛을 이용하여 화상 표시를 하는 flat panel display이다. PDP는 용도는 여러가지가 있지만 현재 주용도는 Computer Monitor이다. 아직 Orange색 이외의 표시색상은 개발되어 있지 않다. Computer Monitor용의 단색 PDP개발은 최근에 활발히 진행되었다. 16 계조표시가 가능한 10inch 640 * 400 Dot PDP가 DIXY, Matsushita, Oki를 비롯한 여러 회사에서 개발되어 상품화 되었다. 국내에서는 금성사, 대우, 삼성에서 현재 개발을 진행시키고 있고 최근에 삼성에서 Computer Monitor용의 640 * 400 Dot PDP가 개발되었다. 그러나 단색 PDP의 생산 시설 과잉으로 최근에는 일본의 DIXY가 도산하였다. 현재는 단색 PDP로 시장 개척에 한계를 느낀 PDP제조 업체에서 총력을 쏟아 CPT(Color Picture Tube) 대체를 위하여 Full Color PDP를 개발하고 있다.

• Journal of Korean Society of Industrial and Systems Engineering
• /
• v.33 no.2
• /
• pp.39-47
• /
• 2010

Bonding glasses is one of the important PDP (Plasma Panel Display) manufacturing processes. Bonding process includes aligning front and rear glasses with fixing clips. In this process, clips have to maintain perfect alignment between the front and rear glasses. The panel which is fixed by clips goes to next process called sealing. The sealing process is performed in high temperature ($465^{\circ}C$). During sealing process, alignment is very important because it can affect seriously on the PDP screen quality. This study suggests redesigned clips to improve PDP panel alignment and also shows stabilization of clips in a high temperature during sealing process.

• Proceedings of the KIPE Conference
• /
• 2005.07a
• /
• pp.380-384
• /
• 2005

Plasma display panel (PDP) has a serious thermal problem, because the luminance efficiency of the conventional PDP is about 1.5 lm/W and it is less than $3{\sim}5$ lm/W of cathode ray tube (CRT). Thus there is a need for improving the luminance efficiency of the PDP There are several approaches to improve the luminance efficiency of the PDP and we adopt the driving PDP at high frequency range from 400 kHz up to over 700 kHz. Since a PDP is regarded as an equivalent inherent capacitance, many types of sustaining drivers have been proposed and widely used to recover the energy stored in the PDP. However, these circuits have some drawbacks for driving PDP at high frequency range. In this paper, we investigate the effect of the parasitic components of PDP itself and driver when the reactive energy of panel is recovered. Various drivers are classified and evaluated whether it is suitable for high frequency driver, and finally current-fed type with do input voltage biased is proposed. This driver overcomes the effect of parasitic component in panel and driver and fully achieves ZVS of all full-bridge switches and reduces the transition time of the panel polarity.

• Journal of Power Electronics
• /
• v.2 no.3
• /
• pp.189-198
• /
• 2002

New concept of energy recovery for plasma display panel (PDP) Is proposed. Different from conventional LC resonant sustaining drivers, the current built up before inverting the polarity of the panel electrodes is utilized to change the panel Polarity together with energy Previously charged in Panel capacitance. This operation Provides zero -voltage-switching of switches and reduction of EMI by rejecting the surge current when the sustain switches are turned on. The build-up current helps to reduce transition time of panel polarity and may produce more stable light waveforms. This method shows a desirable characteristic that the circuit loss is similar to that of series resonant type energy recovery circuit which is very effective method.

• 한국전산유체공학회:학술대회논문집
• /
• 2010.05a
• /
• pp.444-445
• /
• 2010

Predictive modeling schemes have been developed to characterize the heat Transfer and thermo-mechanical behavior for the plasma display panel (PDP) in operation. The inverse approach was adopted to predict the accurate temperature distribution and deformation in PDP. The predictive models were validated with the measurements from real panel. The developed models could be utilized to predict and/or improve the product quality of PDP.

• 한국정보디스플레이학회:학술대회논문집
• /
• 2006.08a
• /
• pp.932-934
• /
• 2006

A relationship between discharge delay time and the aging method were investigated: A-Y (Address electrode - Scan electrode) aging and conventional X-Y(Common electrode - Scan electrode) aging with the variation of sustain voltage beyond self-erasing discharge. Although A-Y aging decreases discharge delay time, it has several drawbacks like non-uniformity of discharge, degradation of luminous efficiency and a color temperature. In a conventional aging condition which is carried out near the mid-margin voltage, discharge delay time is short in low voltage and high frequency condition. As an alternative to conventional voltage aging, high voltage aging is suggested which is carried out at self-erasing sustain voltage region. High voltage aging shows lower discharge delay time and fast aging speed than conventional voltage aging.

• Journal of Power Electronics
• /
• v.6 no.1
• /
• pp.73-82
• /
• 2006

Plasma display panels (PDPs) have a serious thermal problem, because the luminance efficiency of a conventional PDP is about 1.5 1m/W and it is less than $3\~5\;lm/W$ of a cathode ray tube (CRT). Thus there is a need for improving the luminance efficiency of the PDP. There are several approaches to improve the luminance efficiency of the PDP and we adopted a driving PDP at high frequency range from 400kHz up to over 700kHz. Since a PDP is regarded as an equivalent inherent capacitance, many types of sustaining drivers have been proposed and widely used to recover the energy stored in the PDP. However, these circuits have some drawbacks for driving PDPs at high frequency ranges. In this paper, we investigate the effect of the parasitic components on the PDP itself and on the driver when the reactive energy of the panel is recovered. Various drivers are classified and evaluated based on their suitability for high frequency drivers. Finally, a current-fed driver with a DC input voltage bias is proposed. This driver overcomes the effect of parasitic components in the panel and driver. It fully achieves a ZVS of all full-bridge switches and reduces the transition time of the panel polarity. It is tested to validate the high frequency sustaining driver and the experimental results are presented.

• Proceedings of the KSME Conference
• /
• 2001.06d
• /
• pp.453-458
• /
• 2001

Analysis of radiation heating system for producing 60" size PDP panels was carried out using $RADCAD^{TM}$ software. Optimum arrangement of infrared heating elements was found to obtain uniform temperature distribution in PDP panel during heating. Heating capacity of each heater was determined to obtain an appropriate maximum panel temperature. Parametric study to find the effect of design parameters such as the thermophysical and optical properties of glass and cooling system was carried out. As a reference system, about 35 kW heating capacity was chosen to obtain about 800 K maximum panel temperature after 30 minute heating. The maximum temperature difference in panel was below 20 K. The maximum/minimum and its difference in the panel were very sensitive to the variation of the emissivity of glass and cooling block.