| 摘要 |
<p>PURPOSE: An LED driving device and an image projection device thereof are provided to maintain the driving current of single LEDs by selectively increasing the supply current of an LED circuit part. CONSTITUTION: An LED(120) is composed of three LEDs(121,122,123) generating light of red, blue, and green. A display panel(130) forms an image by using light generated from the LEDs. The display panel reflects an image to a projection optic part(114). A lighting optics part(140) is arranged between the LEDs and the display panel. The lighting optics part is composed of a series of lenses forming the lighting optics part. A control print circuit board(150) is installed to a lower case(112). An LED driving device(200) driving the LED is formed in the control print circuit board.</p> |
