面発光型可変色平板光源の試作 : 青-緑変色型

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This paper describes the summary of the development of variable-color flat display panel. As a result of this research, the flat light source which change the luminescent color between blue and green was produced. The external electrodes of the panel were formed by using the Indium Tin Oxide (ITO) transparent conductive films on the front side, and by the aluminum foils on the back side. By the spin-coat method, 3kΩ・cm was obtained for the resistivity of the ITO conducting layer. The thickness of the external glass wall is 3mm. The discharge space is 48(D)×48(W)×10(H)mm in dimension, and is divided into two parts for the height direction by the soda glass of 1mm thickness which cuts off ultraviolet ray. The blue phosphor (NICHIA, NP-107) was coated for the discharge by the ITO electrodes, and green phosphor (NP-205) was applied for the discharge by the aluminum electrodes. The xenon gas of 2.67kPa was enclosed. The CIE chromaticity was (x,y)=(0.1437, 0.1219) when the panel was operated only by the ITO electrodes (for blue phosphor) or (0.1906, 0.7354) when operated only by aluminum electrodes (for green phosphor), and was variable from (x,y)=(O.1657, 0.5290) to (0.1445, 0.13 15) when operated by both electrodes. We obtained 251 .2cd/m^2, 325.3cd/m^2 or 500.5cd/m^2 for the brightness of luminance in each case.
明石工業高等専門学校の論文