ILLUMINANCE DEVICE AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

An LED package (20), an LED driver including an FFT (42), and a thermistor (30) are arranged on a substrate (10). A plurality of LED packages (20) are arranged on the substrate (10). Thus, on the substrate (10) are formed polygonal regions (50, 60) having LED packages (20) as apexes. The thermistor (30) is arranged in the region (50) and the FET (42) is arranged in the region (60) outside the region (50). The thermistor (30) detects the temperature in the region (50). With this configuration, the thermistor (30) can detect the temperature transferred from the LED package according to the temperature in the region (50) without being affected by heating from the FET (42). Accordingly, it is possible to effectively correct the temperature and stabilize the color temperature and the luminance.