Abstract: A fluorescent lamp includes a tube filled with a discharge gas and a fluorescent material, a first external electrode covering an outer edge of the tube, the first external electrode having a tetragonal cap-like shape, and a second external electrode on an outer surface of the tube, the second external electrode contacting the first external electrode.
Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1. where L0[m]: the width of the region S0 L1[m]: the width of the region S1 ?T[K]: the average temperature difference E[Pa]: the Young's modulus of the substrate ?[/K]: the coefficient of linear thermal expansion of the substrate ?th[Pa]: the material constant of the substrate.
Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1. where L0[m]: the width of the region S0 L1[m]: the width of the region S1 ?T[K]: the average temperature difference E[Pa]: the Young's modulus of the substrate ?[/K]: the coefficient of linear thermal expansion of the substrate ?th[Pa]: the material constant of the substrate.
Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C. or more, and the substrate satisfies the relational expression: L1/L0>E??T/?th?1. where L0[m]: the width of the region S0 L1[m]: the width of the region S1 ?T[K]: the average temperature difference E[Pa]: the Young's modulus of the substrate ?[/K]: the coefficient of linear thermal expansion of the substrate ?th[Pa]: the material constant of the substrate.
Abstract: A method according to the present invention is for electrifying a plurality of electric conductors arranged on a substrate including the step of setting an average temperature difference during electrifying processing between a region S0 in that the plurality of electric conductors on the substrate are arranged and a circumferential region S1 of the region S0 at 15° C.
Abstract: In order to operate Field Emission Displays (“FEDs”) contain an evacuated space. Generally, two soda-lime glass substrates, separated by a vacuum gap, act as cathode and anode. The vacuum gap is essential for the electrons to be emitted from the sharp cathode tips and travel towards the anode to give up their energy to the phosphor anode plate to emit light. The two plates and the frit seal holding the vacuum gap are under strain due to the atmospheric pressure acting on them. For small size FEDs , this strain is not a problem. However, for large area FEDs, the strain is detrimental both to the glass plates (2 mm thick) and frit seal. Under the strain, both the cathode and anode plates will buckle-in towards vacuum and, in turn, stress the frit seal, causing cracks and vacuum failure. To minimize this effect and enable the FED to operate normally, a field emissive display with a support plate for the cathode plate is disclosed.
Abstract: The electric lamp has a vacuumtight seal (4) on the longitudinal axis (2) of a glass lamp vessel (1). An internal (12) and an external conductor (13) each have an end (14) inside the seal (4) and extend through a common axial region (5) of the seal (4) in a spaced apart manner. Several metal foils (11) arranged in a flat plane of the seal (4) extend parallel one to the other, in a transversal direction thereof. They have knife-shaped transversal edges (15) and are welded to the internal (12) and the external (13) conductors. The current conductors (10) constituted by the foils (11), the internal (12) and the external (13) conductors are able to conduct rather high currents. The lamp, nevertheless, is of a simple, strong and reliable construction.
Type:
Grant
Filed:
June 5, 1997
Date of Patent:
June 20, 2000
Assignee:
U.S. Philips Corporation
Inventors:
Bart Van Der Leeuw, deceased, by Henricus J. Kunnen, legal representative
Abstract: To maintain the relative positional relationship between an inner tube and an inner electrode of a dielectric barrier discharge tube having a roughly cylindrical, double tube arrangement of an outer tube coaxially arranged about an inner tube with a discharge space defined therebetween, an outer electrode on an outer surface of the outer tube, an inner electrode on an inner surface of the inner tube, and a discharge gas which forms excimer molecules by a dielectric barrier discharge filling said discharge space, despite repeated expansion and contraction of the inner electrode due to the dielectric barrier discharge lamp being repeatedly turned on and off, according to the invention, the inner electrode is formed of a substantially tubular metal component or the like, and a motion preventing component is provided at opposite ends of the inner electrode for maintaining an axial position of the inner electrode relative to the inner tube.