Summary: New Techniques in Video Displays
The preceding papers are summarized, with their important points gathered together for convenient reference.
On the use of phosphors excited by low-energy electrons in a gas-discharge flat-panel display
A gas-discharge flat-panel display device has been constructed in which the light output is white and the color is independent of intensity. The device is based on the Burroughs Self-Scan®structure. A white output was obtained by combining the orange glow of a gas mixture which is predominantly neon with the green emission of a ZnO:Zn phosphor (P15) deposited on transparent conducting anodes and excited by incident low-energy electrons. A peak spot intensity of 3000 fL in the white was achieved at a display-cell current density of 0.33 Aċcm-2and 180 V across the display cell. In a control region where no phosphor was deposited and the output was orange, the peak spot brightness was 7500 fL. Experiments on single-cell devices using helium, neon, argon, and xenon are described which demonstrate that the phosphor is indeed excited by low-energy electrons rather than by UV radiation from the gas discharge. The latter method had been used exclusively to date to obtain colors other than orange in gas-discharge flat-panel displays.
Clozapine derived 2,3-dihydro-1H-1,4- and 1,5-benzodiazepines with D4 receptor selectivity: synthesis and biological testing.
Novel 4-arylpiperazin-1-yl-substituted 2,3-dihydro-1H-1,4- and 1H-1,5-benzodiazepines and their aza-analogues were synthesized as debenzoclozapine derivatives for evaluation as potential D4-ligands. While Ki values of some of the title compounds came within the range of clozapine, they showed an impressively greater selectivity over other dopamine receptor subtypes, especially D2. For the most promising compounds, intrinsic activity and binding properties to serotonin 5-HT1A and 5-HT2 were also determined.