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Beam guide for flat TV
Displays news Patents Higher order dyes Higher order parameters have been reported for a range of pleochroic anthraquinone dyes containing thioether groups. The dyes, developed for the UK Ministry of Defence at the Royal Defence at the Royal Signals and Radar Establishment, are claimed to have order parameters of 0.82, instead of the 0.6 to 0.7 of previous materials. The Ministry's patent on the dyes covers 19 individual compounds which can be combined (eg blue with orange or red with blue) to give a neutral grey colour. The compositions can be used in twisted nematic LCDs, and in Freedericksz effect smectic devices, positive or negative nematic, phase contrast and phase change effect devices. The dyes are said to be stable with good solubility in LC materials.
UK Patent Application 2 082 196A Royal Signals and Radar Establishment, St Andrew's Road, Great Malvem, Worcs WR14 3PS, UK
VFD drive needs fewer leads Fewer leads are needed to drive a fluorescent display from Futaba. The company's claim for the improved drive circuitry is based on the use of two decoders and a particular electrode arrangement. The display's anodes are divided into groups, with some anodes in each group being connected in parallel to similar anodes of other groups. There is'a corresponding number of control electrodes.for the anode groups. A cathode filament is placed above the control electrodes. One of the unit's decoders selects certain anodes in the anode groups using the least significant input signal digit. The other uses the other digits to select a control electrode and thus
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to illuminate part of the display. Andgates in the second decoder link outputs from both decoders.
optical elements arranged in matrix form. The optical elements focus onto the front screen light from the sources.
US Patent 4 325 084
US Patent 4 330 813
Futaba Corp, 11-5 Soto Kanda- lchome, Chiyoda-ku, Tokyo 101,Japan
Commissariat a I'Energie A tomique, Grenoble, France
Video game LC projection A simple projection device for a liquid crystal display is the subject of a patent application by Nintendo. The company intends the device for use with hand-held electronic games. The unit comprises a glass-topped box thPough which outside light is admitted through a diffuser. This light, or light from an internal lamp, is transmitted through a twisted nematic liquid crystal cell, reflected from a mirror in the housing, and projected through a viewing window to the user's eye. Colour filters added to the plate provide a multicolour display.
UK Patent Application 2 089 549A Nintendo Company Ltd, 60 Fuku inek amitakamatsu ~cho, Higasfiiyama-ku, Kyoto-shi, Kyoto-fu, Japan
Beam guide for flat TV Assembly on automated production lines is possible for a beam guide structure for flat panel television from RCA according to its patent. The advance makes mass production of flat TVs a more realistic prospect and is expected to hasten their arrival on the market at prices the consumer can afford. The electron beam guide assembly comprises a front wall and a baseplate. Between these is a number of electron beam channels made up of parallel spaced meshes. The spaced parallel relationships and longitudinal positions of the rows of apertures are retained with insulating supports.
US Patent 4 330 735 RCA Laboratories, Princeton, NJ 08540, USA Car data
Oblique backlit large screen Large screen displays may be uniformly lit from behind using an arrangement patented by the Commissariat a I'Energie Atomique in France, Even light from low incident angles projected from behind is claimed to give a uniform single screen appearance to the display. The optics of the device relies on two screens, a transparent rear face and a translucent front face. Between these an electrically sensitized display material is"placed. This is made up of semiconductor light sources and
display update
Inventors at BL Cars have applied for a patent to cover an instrument which will display data to the road user. The digital display's innovation is to update the information the driver needs at a frequency which depends on the rate of change of the information itself. Thus, at high rates of acceleration, a digital speedometer display is updated more frequently than when the vehicle is cruising.
UK Patent Application 2 084 325A BL Cars Ltd, 35-38 Portman Square, London W1, UK
DISPLAYS. OCTOBER 1982
UK Patent Application 2 082 196A Royal Signals and Radar Establishment, St Andrew's Road, Great Malvem, Worcs WR14 3PS, UK
VFD drive needs fewer leads Fewer leads are needed to drive a fluorescent display from Futaba. The company's claim for the improved drive circuitry is based on the use of two decoders and a particular electrode arrangement. The display's anodes are divided into groups, with some anodes in each group being connected in parallel to similar anodes of other groups. There is'a corresponding number of control electrodes.for the anode groups. A cathode filament is placed above the control electrodes. One of the unit's decoders selects certain anodes in the anode groups using the least significant input signal digit. The other uses the other digits to select a control electrode and thus
236
to illuminate part of the display. Andgates in the second decoder link outputs from both decoders.
optical elements arranged in matrix form. The optical elements focus onto the front screen light from the sources.
US Patent 4 325 084
US Patent 4 330 813
Futaba Corp, 11-5 Soto Kanda- lchome, Chiyoda-ku, Tokyo 101,Japan
Commissariat a I'Energie A tomique, Grenoble, France
Video game LC projection A simple projection device for a liquid crystal display is the subject of a patent application by Nintendo. The company intends the device for use with hand-held electronic games. The unit comprises a glass-topped box thPough which outside light is admitted through a diffuser. This light, or light from an internal lamp, is transmitted through a twisted nematic liquid crystal cell, reflected from a mirror in the housing, and projected through a viewing window to the user's eye. Colour filters added to the plate provide a multicolour display.
UK Patent Application 2 089 549A Nintendo Company Ltd, 60 Fuku inek amitakamatsu ~cho, Higasfiiyama-ku, Kyoto-shi, Kyoto-fu, Japan
Beam guide for flat TV Assembly on automated production lines is possible for a beam guide structure for flat panel television from RCA according to its patent. The advance makes mass production of flat TVs a more realistic prospect and is expected to hasten their arrival on the market at prices the consumer can afford. The electron beam guide assembly comprises a front wall and a baseplate. Between these is a number of electron beam channels made up of parallel spaced meshes. The spaced parallel relationships and longitudinal positions of the rows of apertures are retained with insulating supports.
US Patent 4 330 735 RCA Laboratories, Princeton, NJ 08540, USA Car data
Oblique backlit large screen Large screen displays may be uniformly lit from behind using an arrangement patented by the Commissariat a I'Energie Atomique in France, Even light from low incident angles projected from behind is claimed to give a uniform single screen appearance to the display. The optics of the device relies on two screens, a transparent rear face and a translucent front face. Between these an electrically sensitized display material is"placed. This is made up of semiconductor light sources and
display update
Inventors at BL Cars have applied for a patent to cover an instrument which will display data to the road user. The digital display's innovation is to update the information the driver needs at a frequency which depends on the rate of change of the information itself. Thus, at high rates of acceleration, a digital speedometer display is updated more frequently than when the vehicle is cruising.
UK Patent Application 2 084 325A BL Cars Ltd, 35-38 Portman Square, London W1, UK
DISPLAYS. OCTOBER 1982