There is provided a self-luminous display element driving device which prevents the luminance of a self-luminous display element from changing with the elapse of time and reduces the cost. In the device for constant-voltage driving the self-luminous display element by continuously making on and off states...http://www.google.com/patents/US6291942?utm_source=gb-gplus-sharePatent US6291942 - Self-luminous display element driving device
