Display device

Details Display device Display device

1997-06-25

1999-01-19

Sanghavi, Hemang

Optical waveguides

With optical coupler

Switch

385901, 310324, 310328, 310330, 359295, 345 85, G02B 626, H01L 4108

Patent

active

058622756

ABSTRACT:
Disclosed is a display device for displaying a picture on an optical waveguide plate in accordance with an image signal by controlling displacement movement of each of actuator elements in a direction to make contact or separation with respect to the optical waveguide plate so that scattered light is controlled at a predetermined position on the optical waveguide plate, wherein the actuator element comprises a main actuator element including a piezoelectric/electrostrictive layer, and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer, a vibrating section contacting with a second principal surface of the piezoelectric/electrostrictive layer, for supporting the main actuator element, and a fixed section for supporting the vibrating section in a vibrative manner, and wherein the actuator element further comprises a displacement-transmitting section for transmitting, to the optical waveguide plate, displacement movement of the main actuator element caused by applying a voltage between the pair of electrodes. According to the display device, the electrostatic capacity of the actuator element can be reduced, further, display brightness without any nonuniformity can be obtained, and it is possible to improve the image quality.

REFERENCES:
patent: 4113360 (1978-09-01), Baur et al.
patent: 5052777 (1991-10-01), Ninnis et al.
patent: 5430344 (1995-07-01), Takeuchi et al.
patent: 5600197 (1997-02-01), Takeuchi et al.
patent: 5613022 (1997-03-01), Odhner et al.

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