US 5,557,168 AGranted

Gas-discharging type display device and a method of manufacturing

AssigneeOkaya Electric Industries Co., Ltd.

InventorsFumio Nakajima, Satoshi Watanabe

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Abstract

A panel-shaped gas-discharging type display device includes an anode and a cathode having a special shape to enhance discharging in an airtight chamber formed by two substrates. A gas containing an ultraviolet emission gas such as Xe and Kr and a fluophor for emitting a light are put together into the airtight chamber. Because of the shape of the cathode, more discharging occurs than with conventional devices. More ultraviolet emission from the discharging excites the fluophor to create a visible radiation. Therefore, the brightness of the device increases. Since the cathode is coated with an emitter material incapable of absorbing the ultraviolet emission gas, discharging is not obstructed by reduction of the ultraviolet emission gas, and the color of the visible radiation is stably maintained.

Claims34

Dependent claims

A gas-discharging type display device comprising:

a front substrate formed of a transparent insulating material;
at least one anode on said front substrate, said at least one anode being formed of a transparent conductive material;
a rear substrate formed of an insulating material;
at least one cathode formed of an emitter material on said rear substrate;
at least one junction where said at least one anode and said at least one cathode are in adjacent spaced relation to each other a predetermined distance apart, making at least one discharge cell at said at least one junction;
said front substrate and said rear substrate forming an airtight chamber;
said airtight chamber filled with a discharge gas;
a cathode lead pattern on an inner surface of said rear substrate;
a cathode support layer covering said cathode lead pattern;
said cathode support layer having at least one hole therein;
and
said at least one cathode having a cylindrical shape, having a end connected to said cathode lead pattern at said at least one hole in said cathode support layer and a second end protruding from said cathode support layer into said at least one discharge cell.

9 more elements

Dependencies are inferred from the claim text.