| 摘要 |
A display apparatus includes: a display panel including a plurality of pixels laid out on the surface of a pixel area of the display panel; and an illumination section configured to generate illumination light in a normal direction perpendicular to the display panel, wherein the illumination section has a light source, a light guiding board, the display panel also includes a plurality of photo sensor devices, the light source includes an invisible light source, the light guiding board includes an invisible light beam reflection section.
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