Yaosheng Zheng

19.4: A Novel AC PDP with Shadow Mask

A newly developed AC PDP with shadow mask (SM-PDP) is presented in this paper. Using shadow mask made of invar will cut down the manufacture cost of PDP and improve the performance instead of normal rib walls made of dielectric materials significantly. A 14″ monochromatic SM-PDP (240×200) and a 14″ color SM-PDP (80×RGB×200) have been made and video display have been realized.

11.4: A Novel Shadow Mask PDP with High Luminance and Contrast

An improved AC PDP with shadow mask SMPDP is presented in this paper. The manufacture cost of SMPDP can be reduced significantly by replacing the normal dielectric rib with shadow mask. A 14″ full color SM-PDP 240×RGB×180 prototype TV set has been made. High luminance with 550cd/m2 and high contrast over 5000:1 have been achieved by applying high Xe content and True Black driving scheme.

Effects of shadow-mask voltage on the discharge in shadow-mask PDPs

— A new type of ACPDP with a shadow mask (shadow-mask PDP, SMPDP) has been developed, featuring an effective structure and lower cost. The distinct difference between an SMPDP and a conventional ACPDP is that the dielectric barrier ribs are replaced by a single metal shadow mask. A three-dimensional self-consistent fluid model was used to analyze the effects of the shadow-mask voltage on the discharge for a simplified driving scheme. The simulation results indicate that by selecting the appropriate shadow-mask voltage, the addressing speed can be improved due to the local strong electric field. The steady discharge in the sustaining period will not be affected by changes in the shadow-mask voltages in the addressing period. While in the sustaining period, the shadow-mask-voltage variation can directly affect the sustaining discharge. The floating shadow mask in the sustaining period is beneficial in achieving a stable sustaining discharge.

P‐45: Multi‐gray‐level Reflective LCD Module Design and Its Tiled Application

To meet the requirement of large-Sized indoor/outdoor billboard application, novel reflective LCD module has been designed and fabricated. The 300mm × 300mm sized reflective LCD panel, which has the resolution of 96×96 and single driver board in behind, can be applied in the seamless tiled display wall. 8-gray-level display had been achieved with the regulating on the driver pulse number.

P‐145: Influence of Crystal Structure of Doped MgO on Jitter Time in SM‐PDP

The effect of the MgO crystal structure on the addressing discharge jitter in SMPDP is investigated. By varying the oxygen pressure during E-beam deposition, different MgO crystal structure was made, as analyzed by XRD. The jitter time in a PDP panel was measured for isolated On-pixels at low intensity levels. The conclusion is that the jitter time can be decreased by maximizing the relative (200)/(111) peak ratio, obtained by decreasing the O2 addition during E-Beam MgO deposition.

Development of a 25‐in. SVGA SMPDP

— A newly developed 25-in. SVGA ACPDP containing a shadow mask (SMPDP) is presented. Some modifications have been introduced into the fabrication technique. Instead of using conventional Ag in a thick-film process, an aluminum bus electrode without ITO was fabricated on the front substrate, which was made by using a thin-film process. Due to this improvement, excellent uniformity of the dielectric layer has been achieved. Only five necessary process steps are required during the manufacturing process of the front/rear substrates for the SMPDP. The panel capacitance was reduced by over 20% by adopting an ITO-less structure, which enables high-speed addressing for large-capacity displays. The color purity was improved by applying a high Xe content.