Pioneer Electronic Corporation

Pioneer Corporation

Panasonic Corporation

Kunimoto Tsuchiya

Masami Nishida

Masataka Izawa

Takashi Ohtoh

Chiharu Koshio

Hai Lin

Eishiro Otani

Tetsuya Matsumoto

Atsushi Hirota

Takashi Nishio

Masahiko Ushizawa

A PDP is equipped with a front glass substrate and a back glass substrate which face each other on either side of a discharge space, row electrode pairs formed on the front glass substrate, a dielectric layer covering the row electrode pairs, a protective layer covering the dielectric layer, and a partition wall unit partitioning the discharge space into discharge cells. The partition wall unit has an approximate grid shape. The protective layer has a crystalline MgO layer essentially containing an MgO crystal causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam.

Plasma display panel having a crystalline magnesium oxide layer

A plasma display panel has the front glass substrate and the back glass substrate which are placed opposite each other on either side of a discharge space, row electrode pairs formed on the front glass substrate, a dielectric layer covering the row electrode pairs, and a protective layer covering the dielectric layer. The protective layer has a structure of a lamination of a thin-film MgO layer by either vapor deposition or spattering and a MgO layer including magnesium oxide crystals causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam. A ternary discharge gas including neon, xenon and helium fills the discharge space.

Plasma display panel

A plasma display panel has a front glass substrate and a back glass substrate facing each other on either side of a discharge space, row electrode pairs formed on the rear-facing face of the front glass substrate, and a dielectric layer covering the row electrode pairs. Discharge cells are formed in the discharge space. The PDP further has crystalline MgO layers each provided on a part of portion of the face of the front glass substrate having the row electrode pairs formed thereon and facing toward the discharge space. The crystalline MgO layers include magnesium oxide crystals causing a cathode-luminescence emission having a peak within a wavelength range of 200 nm to 300 nm upon excitation by an electron beam.

A plurality of select electrodes and a plurality of address electrodes are provided in matrix. A pixel is provided at each intersection of the select electrode and the address electrode. A mechanical electrostatic switch is provided for connecting the pixel with the select electrode and the address electrode. The electrostatic switch is provided to be operated by electrostatic charge stored between a part of the select electrode and a part of the address electrode.

Display

A liquid crystal display device comprises a converging reflector, a liquid crystal panel, a condenser lens and a projection lens, wherein a correlation between these optical parts and structure of sizes of the optical parts is considered. Accordingly, a convergence efficiency of the device as whole system can be improved. A converging reflector comprises a light source and a reflecting mirror reflecting a light from the light source, wherein a curved plane shape of the mirror is offset radially to the same length as a radius of a light emitting tube of the light source. Accordingly, a convergence efficiency of the converging reflector can be improved.

Liquid crystal display device with improved convergence efficiency and

A converging reflector comprises a linear light source having two end points located with a predetermined spacing therebetween, a first reflection surface having a curvature so as to have a focal point at one of the two end points, and a second reflection surface having another curvature so as to have a focal point at the other of the two end points. Accordingly, a light from the linear light source is incident onto the first and second reflection surfaces. Thus, this reflector can project a light as an ideal plane of projection, resulting in improved projection efficiency.

Growing community of inventors

Yamanashi-ken, Japan

Kunimoto Tsuchiya