Driver for driving a plurality of light-emitting components and display equipment

Abstract

The invention provides a driver for driving a plurality of light-emitting components and display equipment. According to the embodiment of the invention, a current matching function, a phase shift PWM (Pulse-Width Modulation) dimming function and multiple fault detection and protection functions are integrated into the driver. The embodiment of the invention also provides a high-precision matching circuit, a phase shift PWM dimming circuit and a multifunctional fault detection and protection circuit which are suitable for the driver. The scheme can ensure that the emitted light of the light-emitting components maintains uniform and consistent.

Description

technical field [0001] Embodiments of the present invention relate to a driver and a display device for a light-emitting element, in particular to a driver for multiple parallel-connected light-emitting elements and a display device thereof. Background technique [0002] At present, LEDs are widely used in the display devices of various electronic products because of their small size, low power consumption, high luminous efficiency, and long life. lamp. In various applications of LEDs as backlight devices, the safety of system operation, fault detection, fault protection, etc. are very important. In addition, in backlight applications using multiple LEDs / LED strings, their uniformity and consistency of light emission Sexuality is also expected by users, which requires that the current flowing through each LED / LED string must be evenly matched. [0003] In order to realize the above-mentioned various functions, the LED drive circuit in the prior art mostly adopts a DC-DC co...

AI Technical Summary

Problems solved by technology

This not only increases the complexity and production cost of the entire driving circuit, but also increases the difficulty of debugging the circuit during the design process.

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