18701699. DISPLAY DEVICE AND ELECTRONIC DEVICE (SEMICONDUCTOR ENERGY LABORATORY CO., LTD.)
Contents
DISPLAY DEVICE AND ELECTRONIC DEVICE
Organization Name
SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor(s)
Susumu Kawashima of Atsugi (JP)
DISPLAY DEVICE AND ELECTRONIC DEVICE
This abstract first appeared for US patent application 18701699 titled 'DISPLAY DEVICE AND ELECTRONIC DEVICE
Original Abstract Submitted
A display device whose change in chromaticity is small and grayscale controllability is high is provided. Light emission of the light-emitting device can be performed by PAM and PWM control (a pulse width control involving changes in amplitude), so that the amount of change in chromaticity can be reduced and the controllability on the low grayscale side can be increased. The display device includes a pulse-signal-generation portion and a light-emitting control portion in a pixel and is capable of charging a signal potential in the light-emitting control portion and then discharging the signal potential in accordance with a pulse signal generated in the pulse-signal-generation portion. Thus, the light-emitting device can emit light in a desired period with desired emission intensity.
