Light source device and display device

A light source device, comprising:

• a first light source, providing a first light beam in a first time period of a first period;
• a sound device, providing a sound wave pulse in a second time period of the first period;
• and
• a signal monitor, connecting to the first light source and the sound device, and monitoring a first characteristic signal of the first light source or a second characteristic signal of the sound device,
• wherein when the signal monitor detects the first characteristic signal or a variation of the first characteristic signal is larger than a first threshold, drive the sound device to output the sound wave pulse in the second time period,
• wherein when the signal monitor detects the second characteristic signal or a variation of the second characteristic signal is larger than a second threshold, drive the first light source to output the first light beam in the first time period.

A light source device, comprising:

• a first light source, providing a first light beam in a first time period of a first period;
• a second light source, providing a second light beam in a second time period of a first period;
• a sound device, providing a sound wave pulse in a third time period of the first period;
• and
• a signal monitor, connecting to the first light source and the sound device, and monitoring a first characteristic signal of the first light source, a second characteristic signal of the sound device,
• wherein the first light beam and the second light beam are emitted alternately in the first period,
• wherein when the signal monitor detects the first characteristic signal or a variation of the first characteristic signal is larger than a first threshold,
• wherein when the signal monitor detects the second characteristic signal or a variation of the second characteristic signal is larger than a second threshold, drive the first light source to output the first light beam in the first time period.