Drive circuit of light emitting means for liquid crystal...

Details Drive circuit of light emitting means for liquid crystal... Drive circuit of light emitting means for liquid crystal...

G - Physics

04

C

58/0.2

G04C 17/00 (2006.01) G04G 9/00 (2006.01)

Patent

CA 1064266

Abstract of the Disclosure This invention relates to the field of electronic watches utilizing liquid crystal displays and, more particularly, to means for illuminating such displays under poor ambient light conditions. In the present invention, the output from the oscillator, which conventionally drives the dividing and counting circuits of the timepiece, is also utilized to power the light source. The divider output is typically at a frequency of 8Hz, but frequencies in the range of from 3Hz to 100Hz may be used to drive the light source without noticeable degradation of the light output. By using a pulsed rather than continuous direct current, the power con- sumption is significantly reduced with the attendant advantage of extended battery life.

260750

Affiliated with

Also associated with

Rating

Drive circuit of light emitting means for liquid crystal... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drive circuit of light emitting means for liquid crystal..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drive circuit of light emitting means for liquid crystal... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1102532