Title :
Multicolor LCD for automotive applications
Author :
Matsukawa, Fumio ; Arai, Hirotsugu ; Ohtani, Katsuya ; Matsushita, Shigeru
Author_Institution :
Mitsubishi Electr. Corp., Hyogo, Japan
fDate :
1/1/1990 12:00:00 AM
Abstract :
Segment-type, twisted nematic liquid-crystal panels with finely striped, two-color filters within the panel are discussed. The panel has a color filter-on-indium tin oxide structure. Two types of printed filter (an offset-printed (OP) filter and a screen-printed (SP) filter) were subjected to heat treatment and evaluated. It was found that an SP filter of about 0.3 μm has less effect on the operating voltage and availability for multiplexed drive than an OP filter of about 1 μm in thickness with the same color density. The test results for panel reliability for automotive use are given. The panels can digitally display a vehicle´s speed, fuel level and engine revolutions in bargraph format with good legibility using three colors
Keywords :
automobiles; flat panel displays; liquid crystal displays; ITO; InSnO; automotive applications; bargraph format; color density; color filter-on-indium tin oxide structure; digital display; engine revolutions; finely striped two colour filters; fuel level; heat treatment; legibility; multicolor LCD; multiplexed drive availability; offset-printed filter; operating voltage; panel reliability; screen-printer filter; three colors; twisted nematic liquid-crystal panels; vehicle speed; Automotive applications; Automotive engineering; Availability; Displays; Filters; Fuels; Heat treatment; Testing; Tin; Voltage;
Journal_Title :
Electron Devices, IEEE Transactions on
