| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive voltage generation circuit for a light-emitting diode display device capable of generating drive voltage normally even when an input voltage is low by discharging a low voltage node to which a gate electrode of a protection switching element is connected to the ground level, and to provide a method for driving the drive voltage generation circuit for the light-emitting diode display device.SOLUTION: The drive voltage generation circuit includes: a booster which boosts an input voltage from an external source to generate a boosted voltage; a protection switching element which controls whether or not the boosted voltage generated from the booster is to be output, in accordance with a switch control signal; a protection circuit which compares a level of the boosted voltage outputted from the booster via the protection switching element with a predetermined critical voltage, selects one of a high voltage and a low voltage on the basis of a result of the comparison, and outputs the selected voltage as the switch control signal; and a discharger which discharges a low voltage node to which the low voltage is applied. |
