Hitachi, Ltd.

Akinori Maeda

Nobuo Masuoka

Koji Hirata

Tetsu Ohishi

Yoshie Kodera

Masakazu Sagawa

Nobutaka Amada

Hidenao Kubota

Tohru Sampei

Junichi Ikoma

Motoyuki Miyata

A back substrate has a plurality of electron emission elements. A display substrate comprises an optically transparent substrate disposed opposite to the back substrate; an accelerating electrode formed on the inner face of the optically transparent substrate for accelerating electron beams emitted from the electron emission elements; and luminescent materials excited by the electron beams to emit light toward the outer face of the optically transparent substrate. A frame member supports the back substrate and display substrate on their peripheries. A vacuum chamber is defined by the back substrate, display substrate, and frame member. A conductor electrically connected to the accelerating electrode is drawn out to the outside of the vacuum chamber. A high voltage connector for supplying an accelerating voltage to the conductor is removably connected to the conductor.

Display device

A purpose of the present invention is to provide a simple configuration for bonding a lenticular lens sheet, a front sheet, and light diffusion layers together to reduce cost. To accomplish the above purpose, the present invention comprises: a lenticular lens sheet (); a front sheet (); a first adhesive layer () for bonding the lenticular lens sheet () and the front sheet () together, the first adhesive layer () being disposed between the lenticular lens sheet () and a light incident side of the front sheet (); an AR film (); and a second adhesive layer () for bonding the front sheet () and the AR film () together, the second adhesive layer () being disposed between a light exit side of the front sheet () and the AR film (); wherein light diffusion materials are spread in the first and second adhesive layers to add a light diffusion function to the layers.

Transmissive screen and rear projection type image display apparatus using same

A flat panel display device capable of reducing charging of phosphors and disposing spacers easily and accurately. The flat panel display device has a rear substrate including an insulating substrate provided with many cold cathode elements for emitting electrons, a display substrate including a light-transmissive substrate disposed to face the rear substrate, and phosphors disposed on the light-transmissive substrate for generating light when excited by electron beams from the cold cathode elements, and a peripheral frame member. Provided on the light-transmissive substrate is a metal sheet perforated with plural fine holes arranged in a matrix configuration and having the phosphors disposed therewithin to form a light-emissive region.

Flat panel display device

An purpose of the present invention is to provide a simple configuration for bonding a lenticular lens sheet, a front sheet, and light diffusion layers together to reduce cost. To accomplish the above purpose, the present invention comprises: a lenticular lens sheet (); a front sheet (); a first adhesive layer () for bonding the lenticular lens sheet () and the front sheet () together, the first adhesive layer () being disposed between the lenticular lens sheet () and a light incident side of the front sheet (); an AR film (); and a second adhesive layer () for bonding the front sheet () and the AR film () together, the second adhesive layer () being disposed between a light exit side of the front sheet () and the AR film (); wherein light diffusion materials are spread in the first and second adhesive layers to add a light diffusion function to the layers.

An audio- or low-frequency power amplifier comprises a pair of output transistors which are opposite in a conduction type to each other and connected in a complementary push-pull circuit configuration in which an impedance element is connected between the bases of the paired output transistors whose bases are adapted to be applied with an input signal while the output signal of the amplifier is derived from the coupled emitters of the output transistors. The amplifier further includes a current stabilizer transistor having a base-emitter junction across which a fixed bias voltage is applied and a collector, the current from which is supplied to the impedance element thereby to provide a bias voltage for the paired output transistors. A first resistor is connected between the emitter of the current stabilizer transistor and one electrode or pole of a first d.c. power source while a second resistor is connected between the emitter of the current stabilizer transistor and the other pole of the d.c. source, thereby to maintain constant the bias voltages applied to the paired output transistors.

Growing community of inventors

Yokohama, Japan

Akinori Maeda