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AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsDaiki Nakamura, Nobuharu Ohsawa, Hisao Ikeda, Akihiro Kaita, Shunpei Yamazaki
Estimating the term…
To provide a light-emitting device whose amount of light can be adjusted, or the like. The amount of light emitted from the light-emitting device can be adjusted by controlling the magnitude of the constant current pulse by a control signal. Specifically, the light-emitting device includes a constant current supply configured to be supplied with a control signal and a control pulse signal and configured to supply a constant current pulse; a control device configured to supply the control signal; a driver circuit configured to supply the control pulse signal; and a light-emitting panel configured to be supplied with the constant current pulse. The control signal is a signal for controlling the magnitude of the constant current pulse. The light-emitting panel includes a light-emitting element. The current density of the light-emitting element is greater than or equal to 10 mA/cm2 and less than or equal to 1000 mA/cm2.
(canceled)
A semiconductor device comprising:
A semiconductor device comprising:
Dependencies are inferred from the claim text.