Samsung Display Devices Co., Ltd.

Samsung Electron Devices Co., Ltd.

Jong-seo Choi

Kyu-nam Joo

Kwi-Seuk Choi

Sang-Won Lee

Geun-Bae Kim

Kwi-seok Choi

Kwang-min Lee

Gyu-nam Ju

Deuk-il Park

Sang-Jin Lee

Sang-won Lee

Keun-Bae Kim

Kyung-cheon Shon

Kyu-Nam Joo

Jong-in Jeong

Su-chan Lee

Hwang-chul Bae

Kyu-nam Ju

Kwi-seuk Choi

Hwan-cheol No

Geun-bae Kim

Soo-chan Lee

N, Hwan-Chul

Kyu-Nam Ju

Jong-Ho Oh

Jong-In Jeong

A plasma display device includes a rear substrate (,); first electrodes (,) on an upper surface of the rear substrate (,) in a pattern; second and third electrodes (,) spaced from the first electrodes (,) by a distance, parallel to each other and perpendicular to the direction of the first electrodes (,); auxiliary electrodes (,), parallel to each other and between the second and third electrodes (,), which are electrically floated; a dielectric layer (,) on the upper surface of the rear substrate (,) covering the first electrodes (,), and in which the second electrodes (,), the third electrodes (,), and the auxiliary electrodes (,) are embedded and electrically insulated from one another; and a front substrate (,) supported by the rear substrate (,) and defining a discharge space.

Plasma display device with electrically floated auxiliary electrodes

A field emission device includes a substrate, a first electrode formed on the substrate in a predetermined pattern, a dielectric layer formed on the substrate to embed the first electrode, a second electrode formed on the dielectric layer in a predetermined pattern, a floating electrode spaced apart a predetermined distance from the second electrode, on the dielectric layer, and a conductive particle layer formed between the second electrode and the floating electrode to electrically connect the second electrode and the floating electrode.

Field emission device having floating electrode and conductive particle layer

A plasma display panel includes front and rear substrates; anodes in a stripe pattern on a facing surface of the front substrate; a lower electrode coating the entire facing surface of the rear substrate; a dielectric layer coating the lower electrode; an upper electrode coating the dielectric layer in a pattern; and a lattice of partition walls between the upper electrode and the front substrate. The portions of the dielectric layer between the partition walls and not coated with the upper electrode form respective pixels. Sputtering is minimized and there is less damage to the electrodes by the gas, thus extending the length of use of the product. The ferroelectric material of the lower electrode has excellent resistance with respect to the discharge gas and the discharge can be initiated with a low initial discharge starting voltage since the ferroelectric cathode provides enough electrons for the discharge.

Plasma display device with ferroelectric dielectric layer

A cathode for an electron tube includes a layer of a electron emitting substance containing alkaline earth metal oxides containing 0.01--20.0 wt % of both a lanthanum compound and a magnesium compound or a lanthanum-magnesium compound disposed on a base metal including nickel as a major component and tungsten as a minor component. The tungsten prevents embrittlement and ensures a continuing supply of fill barium in the electron-emitting substance. The cathode enjoys full interchangeability with the conventional oxide cathode and a 15-30% longer life span.

Cathode for electron tube

A cathode for an electron tube, includes a base metal having nickel as a main component, and an electron emitting material layer containing an alkaline earth metal oxide having barium oxide as a main component, wherein a metal layer having zirconium as a main component is located between the base metal and the electron emitting material layer. The cathode has an excellent initial electron emitting characteristic and can emit a large quantity of electrons for a long time. Therefore, the cathode is suitable for a larger and higher-definition CRT.

A cathode, an electron gun, and a cathode ray tube include a ferroelectric electron source. The cathode includes a substrate; a lower electrode layer on the substrate; a cathode layer, on the lower electrode layer, the cathode layer including a ferroelectric emitter; an upper electrode layer, on the ferroelectric cathode layer, the upper electrode layer having electron emitting regions comprising a plurality of electron emission holes for passing electrons emitted from the ferroelectric emitter; and a driving electrode layer, supported by the upper electrode layer, for controlling passage of electrons through the electron emitting regions in the upper electrode layer and the driving electrode layer.

Cathode body, electron gun, and cathode ray tube employing a

The present invention relates to a cathode assembly employing a cermet pellet and a method for manufacturing the same. The cathode assembly of the present invention has a good quality such as a low work function and an enhanced life span as compared with the conventional cathode assembly. Also, since the method for manufacturing a cermet pellet is more simplified than that of the cermet thin film, the cathode assembly employing the cermet pellet according to the present invention can be manufactured with ease and at a low cost.

Cathode assembly having thermion emitter of cermet pallet

An active material for a nickel electrode includes a double hydroxycarbonate having the formula Ni.sub.1-2x M.sub.2x (OH).sub.2 (CO.sub.3).sub.x .multidot.nH.sub.2 O, where 0.05&lt;x&lt;0.2, 0.05&lt;n&lt;4, and M is a Group IIIB element and containing 1-40 at % of a III B group element in a solid solution, based on the weight of nickel, and 1-20 wt % of a conductive enhancer which is at least one substance selected from the group consisting of Co and cobalt compound, based on the weight of the double hydroxycarbonate, so that a nickel electrode having a high capacity, increased life time, high charge/discharge velocity and enhanced utility of the active material can be produced. Alkaline secondary cells can be manufactured using the nickel electrode.

Active material for nickel electrode and nickel electrode having the same

A direct heating cathode for electron guns and a process for producing such a cathode are disclosed. The above direct heating cathode achieves a high current density, extends the expected life span and simplifies the cathode producing process. In the process for producing the above cathode, powdered iridium (Ir) as a basic ingredient is mixed with powdered cerium (Ce) as a subsidiary ingredient at a given mixing ratio into a powdered metal mixture. The powdered metal mixture in turn is applied with a mechanical impact through high energy ball milling, thereby being mechanically alloyed into alloy powder. The alloy powder is compressed with a given pressure, thereby being formed into an alloy pellet. The alloy pellet in turn is heated to remove residual gases from the pellet. Thereafter, the electron emitting performance of the pellet is tested.

Direct heating cathode and process for producing such

A cathode for an electron tube includes a base metal containing nickel as a major component and an electron-emissive material layer which is formed on the base metal and comprises an alkaline earth metal oxide including barium oxide as its main component, wherein the electron-emissive material layer further comprises a lanthanum-magnesium-manganese oxide. The cathode of the present invention is fully interchangeable with conventional oxide cathodes and has a longer lifetimes and an improved cut-off drift characteristic.

Cathode for electron tube having an electron-emission layer including a

A cathode for an electron tube has a layer of electron-emissive substance containing alkaline earth metal carbonates having capillary crystals, to which 0.01-20.0 wt % of both a lanthanum (La) compound and a magnesium (Mg) compound or an La--Mg compound, based upon the weight of the alkaline earth metal carbonate, is added. The cathode enjoys full interchangeability with a conventional oxide cathode and a 15-20% longer lifetime.

A thermion emitting oxide cathode comprising a metal cap and a cathode sleeve, the metal cap being coated with a thermion emitting material layer containing a barium-based alkaline earth metal, wherein the thermion emitting material layer is made of a titanate of the barium-based alkaline earth metal. The thermion emitting oxide cathode is made by mixing a titanium tetrachloride (TiCl.sub.4) with an aqueous solution of barium-strontium-calcium dichloride �(Ba--Sr--Ca)Cl.sub.2 !, dropping the mixture into an oxalate solution of 80.degree. C., thereby precipitating a barium-strontium-calcium titanate hydrate �(Ba--Sr--Ca)TiO(C.sub.2 O.sub.4).sub.2.4H.sub.2 O!, and treating the precipitated barium-strontium-calcium titanate hydrate at a temperature of 500.degree. to 700.degree. C. to remove a plurality of water molecules, thereby producing a suspension of barium-strontium-calcium titanate �(Ba--Sr--Ca)TiO.sub.3 !.

Thermion emitting oxide cathode and method for making the same

A positive electrode and a negative electrode for an alkaline storage battery and manufacturing methods thereof are provided. The positive electrode includes a nickel porous body formed on a plate, active material particles containing nickel hydroxide and additives filled up into the nickel porous body, a conductive layer coated on the surface of active material particle, and a protective layer coated on the surface of the conductive layer, for increasing the binding force between the active material particles and preventing the contact between the active material particles and an electrolytic aqueous solution. The negative electrode comprises hydrogen storage metal particles.

Negative electrode for alkaline storage battery

A hydrogen occluded alloy and a process for producing the above alloy are disclosed. The above process mechanically forms the hydrogen occluded alloy having improved initial discharging characteristics. In the above process, either a powdered LaNi.sub.5 alloy or rare earth metals, such as la, Ce, Pr and Nd, and a powdered CaCu.sub.5 alloy of Mm-Mn-Ni-Al-Co alloys is mixed with a powdered Laves alloy of Zr-Mn-V-Cr-Ni alloys into a powdered alloy mixture. Thereafter, the alloy mixture is applied with a mechanical impact by a high energy ball mill with an attritor, thereby mechanically forming the hydrogen occluded alloy. The above process easily controls the manganese component while producing the hydrogen occluded alloy through the mechanical alloying.

Hydrogen occluded alloy and process for producing such

A cathode ray tube is constructed such that a resistance of a first conductive element connected to a metal film on the inner side of the panel is lower than a resistance of a second conductive element connected to a shadow mask. Thus, the amount of electrons which are emitted from an electron gun to strike the metal film increases, to thereby enhance luminance, and the amount of electrons striking the shadow mask is decreased, to thereby reduce thermal deformation of the shadow mask.

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Suwon, South Korea

Jong-seo Choi