Patent
1976-04-07
1977-12-27
Weldon, Ulysses
58 23R, 58 23BA, 58 855, G04B 1930
Patent
active
040646890
ABSTRACT:
A disk-shaped substrate supports on its front side a liquid-crystal cell bracketed by an upper and a lower glass plate and on its rear side an electric battery along with circuit elements for controlling the selective energization of various electrode leads of the cell to generate different digital symbols, the substrate being sandwiched between two flexible printed sheets whose conductors establish the necessary connections between the battery and the electrode leads of the cell. The connection between corresponding conductors of the two printed sheets is established by metal pins passing insulatedly through apertures in the substrate. A crystal oscillator included in the control circuit is enclosed in a sealed envelope which is received in a trough of the rear substrate face offset from a depression for the battery, the front substrate face being provided with a recess accommodating a chip connected in the wiring pattern of the printed sheet overlying that front face whose extremities are flexed around the lower glass plate to establish contact with conductor terminals carried on projecting marginal portions of the upper glass plate.
REFERENCES:
patent: 3718842 (1973-02-01), Abbott et al.
patent: 3771855 (1973-11-01), Burns
patent: 3778999 (1973-12-01), Vuffray
patent: 3781863 (1973-12-01), Fujita
patent: 3803827 (1974-04-01), Roberts
patent: 3914021 (1975-10-01), Nishimura
Iinuma Yoshio
Kato Toshikiyo
Maekawa Yuzo
Yasuda Tetsuya
Yoshida Masaru
Citizen Watch Co. Ltd.
Weldon Ulysses
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