OLED driving power source and OLED television

Abstract

The invention discloses an OLED driving power source and an OLED television. The OLED driving power source comprises a power board connected with a motherboard and an OLED screen. The power board includes a standby circuit, a power supply circuit, a first conversion module, a second conversion module and a change-over switch. After connection of a power supply, the standby circuit provides power for the motherboard and the power supply circuit; the power supply circuit starts the first conversion module to output a first voltage and a second voltage to provide power for the motherboard and output a high-voltage direct current to the second conversion module; the change-over switch converts the first voltage into a first enabling voltage to provide power for the OLED screen; and the power supply circuit starts the second conversion module to convert the high-voltage direct current into a second enabling voltage to provide power for the OLED screen, and the OLED screen is turned on. Thefirst conversion module includes a bridgeless PFC circuit and a side-circuit LLC control circuit that integrated into same semiconductor chip packaging. Because of integration of the bridgeless PFC circuit and the side-circuit LLC control circuit into one control chip, the circuit structure is optimized, the power board area is reduced, and the production cost is lowered.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to an OLED driving power supply and an OLED TV. Background technique [0002] OLED (organic light emitting diode) is better than traditional LCD and LCD in terms of image quality, response speed, thickness and viewing angle because of its advantages of no need for backlight, no color filter and liquid crystal, and OLED itself can emit light. LED, so it has been widely used in recent years. With the gradual maturity of OLED technology, TVs using OLED as a display solution will gradually replace traditional LCD and LED TVs. Compared with traditional LCD and LED TVs, OLED TVs not only have a qualitative leap in image quality, but also have a thinner , flexibility and other characteristics. Compared with traditional LCD and LED TVs, the existing OLED TVs have higher requirements on the timing of the power supply and higher power, resulting in a large volume of the power board. ...

AI Technical Summary

Problems solved by technology

The architecture of the driving power supply is independent of each other, and the relationship between each is clear and logical, which is very convenient for timing control, but the overall architecture is relatively complicated.

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