Patent ID: 11900867

Abstract:
An electronic device able to be operated with a first state and a second state includes a substrate and light emitting units. When the electronic device is extended along a direction from the first state to the second state, the substrate has a first width in the first state and a second width in the second state in the direction, and the second width is greater than the first width. The light emitting units are disposed on the substrate and can be in a mode of ON. The number of the light emitting units being in the mode of ON in the second state is greater than that in the first state. The numbers of the light emitting units being in the mode of ON per unit area of the substrate while in the first state and second state are respectively defined as PPA_1 and PPA_2, and 1.5×PPA_1≥PPA_2≥0.5×PPA_1.