Method and apparatus for driving light emitting elements for projection of images

摘要

A light source sequentially emits lights generated by at least three light emitting elements each emitting a different primary color to generate an image. Each light emitting element has a duty cycle in a lighting period, which may be an image frame period. A sequence scheme is provided for alternatingly driving different ones of the light emitting elements. The light emitting elements are driven in accordance with the sequence scheme at least two times in the lighting period, while maintaining the duty cycle for each light emitting element. In the sequence scheme, at least one light emitting element having the highest temperature sensitivity of all light emitting elements is driven more times than another one.

主权项

1. A method for driving a light source sequentially emitting lights generated by at least three light emitting elements each emitting a different primary color, the light emitting elements comprising a first light emitting element, a second light emitting element, and a third light emitting element, in an image generating process, each light emitting element having a duty cycle in a lighting period, the method comprising:
providing a sequence scheme for alternatingly driving different ones of the light emitting elements; and driving the light emitting elements according to said sequence scheme at least two times in said lighting period, while maintaining said duty cycle for each light emitting element, wherein, in said sequence scheme, the one light emitting element(s) which has the highest temperature sensitivity in all of the is driven more times than light emitting elements.