| 摘要 |
A light-emitting diode display apparatus includes a diode string of a plurality of light-emitting diodes connected in series, a plurality of switch components each connected across a respective one of the light-emitting diodes, a voltage source that provides a working voltage to the diode string, and a current source that ensures flow of a constant current through assembly of the diode string and the switch components. Each switch component is independently controllable so as to operate in a selected one of an opened state, where the switch component permits current flow through the respective light-emitting diode, and a closed state, where the switch component prevents current flow through the respective light-emitting diode.
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