| 主权项 |
1. An organic electroluminescent display having a maximum light emission intensity Imax, comprising:
a plurality of pixels disposed in an array; a first power supply line and a second power supply line each of which is connected to all pixels of the plurality of pixels, and having a voltage difference V between the voltages of the first and second power supply lines; each pixel comprising a driving transistor and an organic electroluminescent element connected in series between the first power supply line and the second power supply line; driving circuitry operable to provide drive signals to the plurality of pixels; wherein the drive signals have a frame-based time structure; wherein V3 is the minimum magnitude of V for which the display could be operable at intensity Imax using only analog driven drive signals; wherein each frame is subdivided into a plurality of N sub-frames, wherein N is an integer greater than two; wherein V1 is the minimum magnitude of V for which the display could be operable at intensity Imax using only digitally driven sub-frames; wherein the N sub-frames comprise two or more digitally driven sub-frames, and at least one analog driven sub-frame; wherein the operating magnitude of V is V2, which is greater than V1 and less than V3; whereby power consumption of the display is reduced compared to having only analog driven drive signals, and display resolution is improved compared to having N digitally driven sub-frames. |
