3RD INTERIM ENGINEERING REPORT FOR MATRIX CONTROLLED DISPLAY DEVICE-PHASE II

摘要

The progress in a program to develop a feasibility model of a bright, large screen matrix type display using in-air thermoplastic record¬ing .and TIRP (Total Internal Reflection Prism) projection techniques is reported.nThe modifications needed in the TIRP readout optics to improve display brightness and focus in the feasibility model are discussed.nThe results of initial recording tests in the 25 x 25 element feasibility model are reported. Well-resolved cells on two mil centers were recorded on thermoplastic by using matrix switching to control the in-air recording process. Recording and display characteristics were strongly dependent on the thermoplastic temperature. At 25 C, a display with permanent storage was obtained. At about 100 C, it was possible to operate the display in a dynamic mode.nTwo in-air thermoplastic recording life tests are described. It is shown that thermoplastic has excellent reusability and life. For a display with five minute storage, a 2156 hour life was achieved. A detailed evaluation is given which shows that failure was due to improper operating conditions.nAlso reported are the results of the initial KPR processing on the k x 5 inch glass substrates for the full scale 2000 line matrix. Solutions implemented to overcome the KPR coating and exposure problems encountered are presented.