OLED light source driving control circuit and OLED lamp

Abstract

The invention provides an OLED light source drive control circuit and an OLED lamp. The drive control circuit comprises a DC / DC constant voltage module, an external transceiver, a first internal transceiver, a micro-processing module, a linear constant current module and an OLED screen body light source. The micro-processing module communicates with the first internal transceiver, feeds back the detected output voltage to the DC / DC constant-voltage module and controls the DC / DC constant-voltage module to work; the first internal transceiver is connected with the linear constant-current modulethrough a differential bus; the linear constant-current module comprises a plurality of linear constant-current chips, each linear constant-current chip is provided with a second internal transceiver,and differential bus interfaces of the second internal transceivers are connected to differential bus communication lines connected with the differential bus interfaces of the first internal transceivers respectively. According to the invention, the anti-interference capability is stronger, and the circuit conversion efficiency of the whole driving system is effectively improved.

Description

technical field [0001] The invention relates to the technical field of automobile lamps, in particular to the technical field of automotive OLED lamps, in particular to an OLED light source drive control circuit and an OLED lamp. Background technique [0002] As the preferred light source for automotive signal lights, LEDs have been widely and maturely used in automotive signal lights with various functions. However, as a point light source, LEDs are used as a signal light with a certain function in the rear lights of automobiles. Generally, multiple LEDs are required to realize a function. The luminous effect of multiple LEDs does not depend on the use of a good optical reflection system and a light distribution mirror. , it is difficult to achieve good luminous uniformity. Organic light-emitting diode (OLED) products have two major advantages: on the one hand, their self-illuminating characteristics do not require the support of any light source system, and the thickness ...

AI Technical Summary

Problems solved by technology

This driving method has low driving efficiency, occupies more IO ports of single-chip microcomputer resources, and has complicated wiring harnesses, which is not conducive to scalability and platformization.

Moreover, the EMC anti-interference ability is poor. When there is strong electromagnetic interference from the outside world, the OLED drive and control circuit is easily disturbed, causing the OLED to emit light abnormally.

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