| 摘要 |
A light source detection and control system applied to a backlight module is provided. The system includes a liquid crystal display (LCD) panel, a plurality of light guide panels, a plurality of anisotropic transmission media, a photo detector (PD), and a controller. The LCD panel is divided into multiple blocks, each including white or RGB light sources. The light guide panels are disposed on the blocks for collecting and guiding the light emitted by the light sources. The anisotropic transmission media are connected to the light guide panels for transmitting the light emitted by the light sources. The PD is connected to the anisotropic transmission media for receiving the light and detecting the luminance of the light emitted by the light sources. The controller is coupled to the PD for adjusting the luminance or color shift of the light sources according to the luminance detected by the PD.
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