| 摘要 |
The invention intends to improve the gradation and the image quality in a display apparatus based on a current-controlled light emission device, represented by the organic EL device. There is provided a circuit configuration in which switch means is provided parallel to the light-emitting element, and a current path is provided by a change in the conductances of the switch means and the light-emitting element to control the light-emitting and non-emitting states of the light-emitting element. The circuit configuration enables gradational display by an analog change in the conductance, and time gradation display by controlling the light-emitting time.
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