Three-electrode-per-pel AC plasma display panel

A new ac plasma display technique is described in which the alternating sustain function is achieved on the back or substrate glass surface and thex-yselected write-addressing uses a transparent front cover electrode and a substrate electrode. The three-electrode-per-pel structure achieves high overall emission efficiency as a result of nonshielded sustain discharges and low electrode capacitances.     

Feasibility study of non-conductive film (NCF) for plasma display panel (PDP) application

In this study, attempts were made to develop an electrically reliable and low cost bonding process for plasma display panels (PDPs) by using non-conductive film (NCF). The adhesive joints were constructed with Ag electrodes on a glass substrate and Au finished Cu electrodes on a flexible printed circuit (FPC). To clarify the feasibility of NCF application, all experimental results of NCF were compared with those of anisotropic conductive film (ACF) which is currently used for PDP application. The reliability of adhesive interconnections using NCF and ACF was evaluated by measuring daisy resistance during high temperature and humidity storage test (85 °C, 85% RH for 1000 h). Ag electrochemical migration, which leads to the degradation of surface insulation resistance, was also investigated by measuring insulation resistance during the storage test (1000 h at 85 °C and 85% RH). The initial resistance of NCF joints was lower than that of ACF joints due to larger contact area between Ag and Au finished Cu electrodes in the NCF joints. During the reliability test, the daisy resistances of both joints increased slightly due to Z-directional swelling of the adhesives, but NCF joints showed more stable resistance than ACF joints. In addition, upon application of high voltage of 100 V (DC current), severe degradation of insulation resistance due to the Ag migration was observed in ACF joints, whereas no remarkable decrease of insulation resistance was observed in NCF joints. Conclusively, the application of NCF to PDP interconnection process has good potential from a practical point of view.     

A new sustainer by using clamping RC components for AC plasma display panels

A new sustain driver with an energy recovery circuit for ac plasma display panels is proposed. The proposed driver uses not expensive clamping diodes but relatively cheap RC components in the Y and X main boards without degrading the performance. Consequently, it features fewer power devices and lower cost because of no clamping diodes. To demonstrate the validity of the proposed driver, various experimental results with a prototype 42-inch HD PDP module are presented.     

交流彩色等离子体显示板的结构

介绍了ＡＣ－ＰＤＰ结构的改进过程和近期研究的新进展，等离子体显示板结构的改进对于其性能的提高起到了至关重要的作用。     

Multilevel voltage wave-shaping display driver for AC plasma display panel application

A new sustainer circuit with multilevel voltage wave-shaping characteristics for an AC plasma display panel (AC-PDP) drive is proposed. The proposed circuit features half the device voltage stresses and significantly reduced power losses compared with those of the conventional ones. This circuit, realizable without much increased cost of the semiconductor devices, gives a significant improvement in the power efficiency, essential for the design of a drive circuit for the AC-PDP. A comparative analysis and experimental results are presented to show the validity of the proposed sustainer circuit.     

交流彩色等离子体显示器（Ⅰ）

彩色等离子体显示器具有许多独特的特点，最适宜用于大屏幕壁挂高清晰度电视。从目前的技术发展状况看，单基板表面放电型ＡＣＰＰ最具潜力。本文详细分析了ＡＣＰＤＰ的工作原理和采用的多种关键技术，并对彩色ＰＤＰ的发展前景作了展望。     

High-speed driving method using bipolar scan waveform in AC plasma display panel

This paper proposes a new high-speed driving method using the bipolar scan waveform with a scan width of 1 /spl mu/s in an ac-plasma display panel. The bipolar scan waveform in an address period consists of a two-step pulse with two different polarities, i.e., a forward scan pulse with a negative polarity and reverse scan pulse with a positive polarity, which can produce two address discharges, including a primary address discharge for generating wall charges and secondary address discharge for accumulating wall charges. To produce the fast address discharge stably using the bipolar scan pulse during an address period, a new reset waveform is designed based on a V/sub t/ close curve analysis, and the address discharge characteristics examined under various reset and address waveforms. As a result of adopting the proposed driving method, a high-speed address with a scan width of 1 /spl mu/s is successfully obtained when using a checkered pattern on a 4-in test panel.     

A real-time curve tracer for the AC plasma display panel

A minicomputer-controlled system is used to automatically measure the wall charge transfer curve of a single cell in an ac plasma display panel. Curves can be plotted on a graphics display as fast as 5/s which allows real-time interaction with the user. The measurement technique is based on the ability to directly measure the wall charge from a single cell. The minicomputer controls the sustain voltage across the cell and obtains the resulting wall charge. It then does the tedious algebra needed to complete the transfer curve. The measured curves show numerous interesting effects. The influence of the state of the neighboring cells can clearly be seen. The duty factor of the sustain waveform has a strong influence on the transfer curve. An effect dependent on sustain frequency is presented that shows a transfer curve region with negative slope. The most interesting effect measured is a hysteresis in the transfer curve, in that a different curve is traced out as the cell goes from off to on than when it goes from on to off.     

A resonant energy-recovery circuit for plasma display panel employing gas-discharge current compensation method

A resonant energy-recovery circuit for a plasma display panel (PDP) employing a gas-discharge current compensation method is proposed. Its main concept is to make the resonant circuit biased by V/sub s/ and 0V instead of V/sub s//2 in charging and discharging the PDP, respectively. This operation helps the PDP to be fully charged and discharged and all main switches turned on under zero-voltage switching. Moreover, since the inductor current can compensate the large gas-discharge current, the current stresses on main power switches can be considerably reduced and all main switches have the turn-on timing margin, which ensures the no voltage drop across the PDP. Therefore, all these features could favorably provide a high energy-recovery capability, more accumulated wall charge, reduced sustaining voltage, and low electromagnetic interference. Therefore, the proposed circuit is expected to be well suited for a hang-on-the-wall PDP TV.     

High performance sustaining driver for plasma display panel employing gas-discharge current compensation method

A new sustaining driver for a plasma display panel (PDP) employing a gas-discharge current compensation method is proposed. It features a high performance, zero-voltage-switching, high efficiency, low EMI and high energy-recovery capability. Furthermore, since it compensates for the large gas-discharge current, it enables the PDP to light at a lower voltage than the prior circuit.     

Electron transport self-shift display using an AC plasma panel

Using an electron transport mechanism, a self-shift display has been successfully implemented on an ac plasma panel providing higher resolution, higher shifting speed, and wider operating margins than previously obtained. The mechanism consists of a unidirectional and efficient transport of a large portion of electrons (generated during the display site discharge) to a neighboring OFF transfer site by a low transverse voltage. The process results in a large wall voltage build-up at the transfer site to switch its state from OFF to ON. The implemented electron transport self-shift display consists of a 7 × 128 site array of an Owens-Illinois 60 lines per inch panel where the 128 columns are driven by a four-phase driver. A resolution of one display site for every two electrodes and a shifting speed better than 600 characters per second have been successfully demonstrated. The ranges of the shifting voltages VDand VTare better than 15 V over a 10-V sustain range. The shifting operation also was successfully demonstrated on an 83 lines per inch panel with good operating margins.     

Cost-effective PDP sustaining driver with current injection method

A new plasma display panel (PDP) sustaining driver using the charge pump technique is proposed. Since this circuit enables low voltage switches to be usable, the cost can be reduced by about 30-40% compared with that of a conventional driver. To recover energy stored in the panel capacitance, a new energy recovery concept of current injection method is adopted to achieve zero-voltage-switching and reduce electromagnetic interference by rejecting the surge current caused by hard switching.     

An energy-recovery sustaining driver with discharge currentcompensation for AC plasma display panel

A novel driver with discharge current compensation is proposed to drive an AC plasma display panel (PDP). This proposed circuit uses resonance between the inductor and the AC PDP to avoid abrupt charging/discharging. The four switches of the full bridge are all operated with zero-voltage-switching turn-on. In addition, an 8-in AC PDP equipped with the proposed driving circuit, operating at 100 kHz, is investigated. With the discharge current compensation, the experimental results show that the proposed driver can maintain the AC PDP to light at lower voltage (129 V)     

Reset-while-address (RWA) driving scheme for high-speed address in AC plasma display panel with high Xe content

A new reset while-address (RWA) driving scheme for a single scan of an XGA grade (1024 /spl times/ 768) ac-plasma display panel (PDP) is proposed to improve the address discharge characteristics with a high Xe gas mixture (15%). To solve the conventional address problem of the gradual decrease in priming particles during an address period, the falling ramp waveform in the reset period is separated into two parts; the first part is applied at the beginning of the reset period and provides the priming particles during the first half of the address period, while the second part is applied in the middle of the address period to provide an additional supply of priming particles during the second half of the address period. As a result of adopting the proposed RWA driving scheme, address discharges were successfully produced within a 1.0-/spl mu/s pulsewidth due to the presence of priming particles throughout the address period.     

Energy-recovery circuit for plasma display panel

A new energy-recovery circuit for a plasma display panel (PDP) is proposed. It features a simpler structure, less mass, higher efficiency, and fewer devices. The very stable and uniform light emitted from a PDP proves the high quality of the screen. It is suitable for hang-on-the-wall TVs which have desirable features such as thinness, lightness, high efficiency, and low price     

Surface-discharge-type plasma display panel

The surface-discharge type plasma display panel does not require accurate spacing between two plates. Also, the number of manufacturing processes can be reduced to nearly half those required for opposed-discharge-type panels, resulting in low cost. The relationship between the principal design factors of a surface-discharge-type panel and the firing voltage in the nonmemory mode is discussed, based upon experiments and calculations from an equivalent circuit. Furthermore, by making use of the fact that one side of the panel is simply a cover glass for the gas space, it is possible to obtain green emission by coating a phosphor on the inside surface of the cover glass. In this arrangement, degradation of the phosphor by ion bombardment seldom occurs and long life panels can be achieved.     

等离子显示屏电源设计

对等离子显示屏作了简要介绍，重点讲述了PDP电源的技术特点、工作时序、待机电源与PFC电路的设计、寻址电源与逻辑电源的设计。该研究成果完全满足PDP电源的要求，并已得到成功应用。     

LSI-Direct-controlled plasma display panel

A plasma display panel with auxiliary discharge cells to control the display cells has been developed. The panel can be directly controlled by low-voltage MOS-LSI switching circuits.     

High performance and low-cost single switch energy-recovery sustaining driver for AC plasma display panel

A new energy-recovery sustaining driver for an AC plasma display panel (PDP) is proposed. Since it has only one auxiliary switch compared with the four of the prior circuit, its size and cost can be greatly reduced. Moreover, it features the fast transition time of the panel polarity, fully charged and discharged PDP and soft switching of all power switches.     

Origin of the bistable voltage margin in the AC plasma display panel

Bistability in gas-discharge cells is discussed from a general viewpoint. The physical mechanisms controlling the extent of this bistable range are examined by performing numerical simulations of the discharge dynamics in ac plasma panel cells under various assumed conditions. For the particular case of the commonly used neon + 0.1-percent argon mixture, the results give realistic bistable operating margins only when all three of the following conditions are satisfied: 1)incorporation of the electric-field distortion due to space charge; 2) inclusion of the dependence of the secondary-emission coefficient, γ, on the reduced electric field,E_{c}/p_{0}, at the cathode; and 3) assumption of an insignificant value of γ for argon ions in comparison to that for neon ions.