| 摘要 |
A display apparatus (100') includes a substrate (115a) and a light switch (210). A light source (310') is provided at the side of the substrate (115a) and emits light of which wavelength is in the range of ultraviolet or cyan. A polarizing sheet (116), as well as a photoluminescence film (110'), is provided in front of the light source (310'). Under the excitation of the light source (310'), the photoluminescence film (110') can emit red light, green light, blue light and/or intermediate color light among red, green and blue.
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