摘要:
A field emission display (100, 200, 300) includes a plurality of offset phosphors (126) and a cathode plate (110). Cathode plate (110) has a plurality of non-electron-emissive structures (112), a plurality of electron-emissive pixels (108), and a plurality of focusing electrodes (106). Offset phosphors (126) are aligned one each with non-electron-emissive structures (112) of cathode plate (110). Focusing electrodes (106) are disposed to cause a plurality of emission currents (134), which are generated by electron-emissive pixels (108), to be directed one each toward offset phosphors (126). Ions liberated from offset phosphors (126) are received by non-electron-emissive structures (112) of cathode plate (110), thereby ameliorating ion bombardment of electron-emissive pixels (108).
摘要:
A field emission display (100) includes a cathode plate (110) having a plurality of electron emitters (114), an anode plate (122) having an anode (124) connected to a potential source (126), and an anode voltage pull-down circuit (127) having an input (106) and an output (104). Output (104) is connected to anode (124), and input (106) is connected to potential source (126). Preferably, anode voltage pull-down circuit (127) causes an anode voltage (120) at anode (124) to drop to about ground potential prior to generation of a discharge current by electron emitters (114) for neutralizing positively electrostatically charged surfaces (137, 138) within field emission display (100).
摘要:
A plurality of edge emitters in a FED array include a plate shaped substrate having parallel, laterally spaced apart grooves formed in a first surface and parallel, laterally spaced apart grooves formed in the opposite surface so that each second groove crosses each first groove at an angle. The combined depths of the grooves is greater than the thickness of the plate substrate so that an opening is formed through the substrate at each point where a second groove crosses a first groove. Gate metal is deposited on the surfaces in the openings and emitter material is deposited on the lands of the first surface to form FED emitters in each opening.
摘要:
A flat, cold-cathode electron emitter including a substrate having a relatively flat surface with a low work function electron emission material layer for emitting electrons supported on the surface of the substrate. A contact conductive layer is disposed on the electron emission material layer and defines an aperture therethrough. An insulating layer is disposed on the contact conductive layer and has an aperture defined therethrough coextensive and in peripheral alignment with the aperture in the contact conductive layer and a conductive gate layer is disposed on the insulating layer. The contact conductive layer forms the field potential so that emission occurs substantially in the center of the aperture.
摘要:
Manufacturing a single substrate fluorescent display including forming a first conductive layer on a substrate, depositing a first insulating layer on the first conductive layer, depositing a second conductive layer in horizontal rows on the first insulating layer, depositing a second insulating layer on the second conductive layer, and depositing an electron emitting layer of low work function material in columns on the second insulating layer so as to define a plurality of pixels at the column/row intersections. An opening is formed at each pixel extending through the layer of electron emitting material, the second insulating layer, the second conductive layer and the first insulating layer to the first conductive layer. A layer of light emitting material is deposited on the first conductive layer in the opening at each pixel.
摘要:
An optical semiconductor device is formed by using one controlled etch to form a "T" shaped contact structure on the device (20). The etch rate is controlled by judicious selection of materials to provide a cladding layer (17) that has a predetermined etch rate in hydrofluoric acid, a support layer (10) and a contact layer (18) that are not affected by hydrofluoric acid, a lift-off layer (19) that is dissolved by hydrofluoric acid, and a barrier layer (21). Dissolving of the lift-off layer (19) facilitates removing the barrier layer (21).
摘要:
A method of manufacturing optocoupler devices is provided wherein individual light emitting chips are mounted to a plurality of photodetector chips still in wafer form such that testing of the emitter detector pairs may be accomplished prior to dicing of the photodetector chip and mounting of the emitter detector pairs.
摘要:
A field emission source comprising a first conductive region, a layer of nanotubes deposited on the first conductive region, and a second conductive region placed over and spaced from the nanotube coated first conductive region. After the device structure is fabricated, a laser beam is used to dislodge one end of the nanotube from the first conductive surface and an electric field is simultaneously applied to point the freed end of the nanotube at the second conductive region.
摘要:
A field emission device (100, 200, 300, 400, 500) includes a substrate (110, 210, 310, 410, 510), a cathode (115, 215, 315, 415, 515) formed thereon, a plurality of electron emitters (170, 270, 370, 470, 570) and a plurality of gate electrodes (150, 250, 350, 450, 550) proximately disposed to the plurality of electron emitters (170, 270, 370, 470, 570) for effecting electron emission therefrom, a dielectric layer (140, 240, 340, 440, 540) having a major surface (143, 243, 343, 443, 543), a surface passivation layer (190, 290, 390, 490, 590) formed on the major surface (143, 243, 343, 443, 543), and an anode (180, 280, 380, 480, 580) spaced from the gate electrodes (250, 350, 450, 550).
摘要:
A portable electronic device with virtual image display including a semiconductor array providing a real image and an optical system mounted to receive the real image and produce a virtual image at a viewing aperture. Electronics are associated with the array to produce real images in accordance with messages received by a data source such as a communication receiver. The display is sufficiently small to mount in a hand held microphone for viewing by the operator while using the microphone.