G - Physics – 09 – G
Patent
G - Physics
09
G
375/13, 345/8
G09G 3/18 (2006.01)
Patent
CA 1257371
ABSTRACT: An alpha-numeric display device comprises seven rows of five elements (1-35) in which each element (6-10) of the second row is connected to the corresponding ele- ment (11-15) in the third row so that a single signal con- trols both element. Similarly each element (21-25) in the fifth row is connected to the corresponding element (26-30) in the sixth row. In addition the second element (2) in the first row may be connected (36) to the fourth element (4) in the first row. A full alpha-numeric character set may be generated by appropriately energizing selected ele- ments. Since the display device effectively comprises either twenty four or twenty five elements rather than thirty five elements the number of electrical connections required is reduced. In addition the quantity of infor- mation required to be stored to drive the display is also reduced. The elements (1-35) may be formed as liquid crystal cells and a plurality of devices may be formed into a multi-character display arrangement. When address- ing the display devices in matrix form either a five row by five column matrix or two four row by three column matrices may be used depending on whether the link (36) between the second (2) and fourth (4) elements of the first row is provided.
477176
Mulkerrin Robert A.
Phillips Ian
Fetherstonhaugh & Co.
N.v.philips'gloeilampenfabrieken
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