Light-adjusting method of light-emitting diode backlight
A LED display and backlight technology, applied in static indicators, instruments, etc., can solve the problems of changing backlight intensity and discomfort of human eyes, and achieve the effect of reducing discomfort
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 The present invention will be further described in detail below in conjunction with the drawings.
 Such as figure 2 As shown, the dimming method of the LED display backlight of the present invention firstly connects the photosensitive device, the analog-to-digital converter, the pulse width modulation generator and the dimming circuit to form an adaptive dimming circuit; the photosensitive device can be adjusted according to the external Use the light intensity of the environment to judge and output different LED working voltages, and then quantize the voltage into a digital signal through the analog-to-digital converter and transmit the digital signal to the pulse width modulation generator. The pulse width modulation generator is based on the quantized digital The signal generates a corresponding duty cycle pulse signal. This pulse signal is transmitted to the PWM pin of the IC in the dimming circuit, so that the DC boost converter circuit is switched at a frequ...
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