Sony Corporation

Shoichi Tanamachi

Kazuto Kimura

A plasma addressed liquid crystal display device is disclosed wherein the dimension of a gap of a liquid crystal cell is controlled uniformly over the entire area of the screen of the display device. The display device comprises a first substrate having a plurality of striped data electrodes formed substantially in parallel on a major surface thereof, a second substrate disposed in an opposing relationship to the first substrate and having a plurality of discharge electrodes formed thereon perpendicularly to the data electrodes, an intermediate sheet interposed between the first and second substrates and cooperating with the second substrate to define a discharge chamber between them, a plurality of barrier ribs having top surfaces for contacting in a contacting pattern with a surface of the intermediate sheet, an adhesive spacer interposed between the first substrate and the intermediate sheet and adhered to and cooperating with the other surface of the intermediate sheet to define a gap, the adhesive spacer having a pattern corresponding to the contacting pattern, and a liquid crystal layer enclosed in the gap and having a thickness determined by the adhesive spacer.

Plasma addressed liquid crystal display device

A picture display device for driving a layer of an electro-optical material by exploiting a plasma for selecting a picture. The device includes a first substrate having a plurality of first electrodes arranged in parallel to one another, a second substrate having a plurality of parallel second electrodes extending perpendicularly to the first electrodes, a dielectric sheet provided between the first substrate and the second substrate, a plurality of barrier ribs provided on the second substrate to from a plurality of plasma channels between neighboring second electrodes, an electro-optical layer provided between the first substrate and the dielectric sheet, an ionizable gas sealed between the second substrate and the dielectric sheet, and a plurality of insulating layers formed on the second electrode, with each insulating layer being formed on a part of the second electrode. There is also disclosed a method for manufacturing the plasma display device.

Method of producing a plasma addressed liquid crystal display device

Electro-optical plasma display device with electrode having insulating

In a driving method capable of selectively scanning discharge channels in a stable and efficient manner using an open-cell structure, a plasma-addressed display device comprises a display cell, a plasma cell, a scanner, a supply and a controller. The display cell is equipped with data electrodes arranged so as to be mutually parallel. The plasma cell is for creating discharge channels formed in such a manner as to be orthogonal with respect to the data electrodes and has anodes and cathodes alternately arrayed in such a manner as to be shared between adjacent discharge channels. The scanner is for carrying out selective scanning of the discharge channels. The supply is for applying a data voltage to the data electrodes. The controller is for controlling the maximum value of the voltage across the cathodes and anodes, the data electrodes and anodes and the data electrodes and cathodes of each of the discharge channels in such a manner as to not exceed a prescribed plasma discharge start voltage at periods other than periods of plasma discharge.

Driving method of plasma-addressed display device

A plurality of signal electrodes D arranged in parallel to each other are formed on a major surface of a first substrate 4. A second substrate 6 is opposed to the first substrate. A plurality of plasma electrodes 7 arranged in parallel to each other and intersecting the signal electrodes D are printed on a major surface of the second substrate 6. In addition, an opaque insulating striped pattern 8 is printed so as to intersect and overlap with the plasma electrodes 7. A liquid crystal layer 5 is sandwiched between the first and second substrates 4 and 6. Further, a plasma chamber 10 having consecutive spaces is formed between the liquid crystal layer 5 and the second substrate 6, and filled with an ionizable gas. The gap space of the plasma chamber 10 can be controlled on the basis of the film thicknesses of the plasma electrodes 7 and the striped pattern 8. The gas is selectively ionized by discharge generated between the two adjacent plasma electrodes 7. The liquid crystal layer 5 positioned at the intersections between the signal electrodes D and the discharge regions is driven with the discharge regions (at which the ionized gas is localized) as the scanning unit. The plasma electrodes 7 are formed by a printed thick film and therefore the electric resistance thereof is low.

Plasma addressing display device

A plasma addressed electro-optical device comprising a first substrate having a plurality of first electrodes arranged substantially in parallel to each other on a major surface thereof; a second substrate opposed to the first substrate and having a plurality of second electrodes arranged substantially in parallel to each other on a major surface thereof; an electro-optical material layer positioned between the first and second substrates; and a discharge chamber formed between the electro-optical material layer and the second substrate and containing an ionizable gas. The second electrode has a plurality of barrier ribs periodically disposed thereon, and the first and second electrodes are so arranged as to be spaced apart in the vertical and horizontal directions, respectively. And each of the barrier ribs is substantially the same in width as the second electrode. Since the width of each electrode is reducible to be equal to that of the barrier rib, both definition and fineness can be enhanced in the device.

Growing community of inventors

Kanagawa, Japan

Shoichi Tanamachi