Light source driving method
A light source driving method for controlling a first and a second light source assembly of a projection apparatus to turn on and off at least once during each 1/n frame time is provided. The first light source assembly includes first color light sources and third color light sources, while the second light source assembly includes second color light sources. The light source driving method includes following steps: turning on and off the first color light sources once sequentially in a first sub-frame period; turning on and off a part of the second color light sources once synchronously in a second sub-frame period; turning on and off the other second color light sources once synchronously in a third sub-frame period; and turning on and off the third color light sources once sequentially in a fourth sub-frame period.
1. A light source driving method for controlling a first light source assembly and a second light source assembly of a projection apparatus to turn on and off at least once during each 1/n frame time, each 1/n frame time consisting of two first sub-frame periods, two second sub-frame periods, two third sub-frame periods, and two fourth sub-frame periods, the first light source assembly comprising a plurality of first color light sources and a plurality of third color light sources, and the second light source assembly comprising a plurality of second color light sources, the light source driving method comprising:
turning on and off the first color light sources once sequentially in the first sub-frame period;
turning on and off a part of the second color light sources once synchronously in the second sub-frame period;
turning on and off the other second color light sources once synchronously in the third sub-frame period; and
turning on and off the third color light sources once sequentially in the fourth sub-frame period;
wherein each of the first sub-frame period and the fourth sub-frame period equals to 1/6n frame, and each of the second sub-frame period and the third sub-frame period equals to 1/12n frame time, where n is a positive integer.
2. The light source driving method as claimed in claim 1 , wherein n=2.
3. The light source driving method as claimed in claim 1 , wherein the first color light sources are red light sources, the second color light sources are green light sources, the third color light sources are blue light sources, and the color light sources are light emitting diodes.
4. A light source driving method for controlling a first light source assembly and a second light source assembly of a projection apparatus to turn on and off at least once during each 1/n frame time, each 1/n frame time consisting of a first sub-frame period, a second sub-frame period, a third sub-frame period, a fourth sub-frame period, a fifth sub-frame period, and a sixth sub-frame period, the first light source assembly comprising a plurality of first color light sources and a plurality of third color light sources, and the second light source assembly comprising a plurality of second color light sources, the light source driving method comprising:
turning on and off a part of the first color light sources once in the first sub-frame period;
turning on and off a part of the second color light sources once in the second sub-frame period;
turning on and off a part of the third color light sources once in the third sub-frame period;
turning on and off the other part of first color light sources once in the fourth sub-frame period;
turning on and off the other part of second color light sources once in the fifth sub-frame period; and
turning on and off the other part of third color light sources once in the sixth sub-frame period.
5. The light source driving method as claimed in claim 4 , wherein each of the first sub-frame period, second sub-frame period, third sub-frame period, fourth sub-frame period, fifth sub-frame period, and sixth sub-frame period equals to 1/6n frame time, where n is a positive integer.
6. The light source driving method as claimed in claim 5 , wherein n=2.
7. The light source driving method as claimed in claim 4 , wherein the first color light sources are red light sources, the second color light sources are green light sources, the third color light sources are blue light sources, and the color light sources are light emitting diodes.