Abstract: Provided is a method of manufacturing an electronic part having a plurality of wiring patterns and an insulating layer interposed between the wiring patterns and serving to establish electrical connection between the wiring patterns through an interlayer connecting portion penetrating the insulating layer. In the method, a first step of forming a wiring pattern and a columnar conductor and a second step of forming a layer having a uniform thickness by bonding an insulating sheet from above and pressing the insulating sheet to the height of the columnar conductor with the columnar conductor as a stopper so as to conform the thickness of the insulating sheet to the height of the columnar conductor are repeated.

Abstract: A conductor portion is formed on the surface of a support member. After the conductor portion is formed, a copper foil on which resin is attached is moved downward from above the conductor portion to pressurize the conductor portion while covering it. the copper foil with the resin is pressed to the height of the conductor potion while using the conductor portion as a stopper. Thus, it is possible to make the height of the insulating layer equal to the height of the conductor portion.

Abstract: An EL panel for providing a display of three colors, comprising at least EL phosphor thin films of two types for emitting green and blue colors, and a red light emitting portion, the EL phosphor thin films of two types for emitting green and blue colors comprising an alkaline earth sulfide or oxide. The EL panel, especially full color EL panel can produce light of an improved color purity without a need for a RGB patterned filter.

Abstract: An EL panel for providing a display of three colors, comprising at least EL phosphor thin films of two types for emitting green and blue colors, and a red light emitting portion, the EL phosphor thin films of two types for emitting green and blue colors comprising an alkaline earth sulfide or oxide. The EL panel, especially full color EL panel can produce light of an improved color purity without a need for a RGB patterned filter.

Abstract: An organic EL display panel includes a substrate, an organic light emitting layer between two electrodes, one of which is transparent, and a color filter layer formed by evaporating a pigment and/or an organic dye, the organic EL display panel being divided into a plurality of organic EL devices capable of being independently controlled. The organic EL display panel having such constitution can be manufactured at low cost and made thinner, and has excellent properties.

Abstract: A color conversion material comprises a high-molecular material having a light transmittance of at least 90% in a visible light region, a fluorescent dye contained therein, and a fluorescent pigment particle dispersed therein. The wavelength of unconverted light incident on the color conversion material is up to 520 nm, the light emission maximum wavelength of the conversion material is at least 580 nm upon incident light conversion, and the conversion efficiency of at least 10% is obtained.

Abstract: A dielectric ceramic material containing lead, calcium, tungsten, iron, and niobium in oxide form has a primary phase of the composition: (pb.sub.1-z Ca.sub.z)(W.sub.s Fe.sub.t Nb.sub.u)O.sub.3 wherein 0.3.ltoreq.z.ltoreq.0.9, s+t+u=1, 0.01.ltoreq.s.ltoreq.0.2, 0.5.ltoreq.t.ltoreq.0.6, and 0.2.ltoreq.u.ltoreq.0.49. The material which can be effectively fired at low temperature has a minimal temperature coefficient of resonance frequency in the microwave frequencies, a high dielectric constant, and a high Q.multidot.f value.