| 摘要 |
A white light emitting device includes a first light emitting device, a photoluminescent phosphor, a second light emitting device, and a current adjuster. The first light emitting device has a light emitting layer made of semiconductor, and emits blue light. The photoluminescent phosphor completely absorbs light emitted by the first light emitting device to emit green light. The green light combines with the blue light to form cyan light. The second light emitting device has a light emitting layer made of semiconductor, and emits red light. The red light combines with the cyan light to form white light. The current adjuster is electrically connected to the second light emitting device to adjust the magnitude of the current transmitted to the second light emitting device, thereby controlling color temperature.
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