Power supply circuit of display device, and display device with same

Abstract

The invention discloses a power supply circuit of a display device, and a display device with same. The power supply circuit of the display device comprises a power supply management circuit and an overcurrent protecting circuit, wherein the power supply management circuit is used for supplying power to the driving circuit of the display device. The overcurrent protecting circuit is coupled with the power supply management circuit and is used for detecting output current of the power supply management circuit, and makes the power supply management circuit stop operation or reduce output when an output current abnormity occurs. According to the power supply circuit of the display device, through arranging the overcurrent protecting circuit in the output path of the power supply management circuit, and through detecting the output current of the power supply management circuit, when the current abnormity occurs, the working state of the power supply management circuit can be controlled in time, thereby preventing a problem of screen melting caused by the current abnormity.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a display power circuit and a display. Background technique [0002] The integration of the components in the display is usually high. When there is a foreign object inside the display, it will usually cause a short circuit between the various working circuits inside the display, resulting in excessive current on the line, resulting in a screen melting problem on the display, or even It may cause a fire and other situations, which has a greater potential safety hazard. [0003] In the prior art, a voltage detection component is usually installed at the position prone to short circuit, and the output signal of the power management circuit is controlled by detecting the voltage. At this time, only when the voltage value becomes low or high can it be detected In other words, the circuit abnormality detection method of the display technology cannot detect the abnormality of the cir...

AI Technical Summary

Problems solved by technology

[0002] The integration of the components in the display is usually high. When there is a foreign object inside the display, it will usually cause a short circuit between the various working circuits inside the display, resulting in excessive current on the line, resulting in a screen melting problem on the display, or even Causing fire and other situations, with greater safety hazards

[0003] In the prior art, a voltage detection component is usually installed at the position prone to short circuit, and the output signal of the power management circuit is controlled by detecting the voltage. At this time, only when the voltage value becomes low or high can it be detected In other words, the circuit abnormality detection method of the display technology cannot detect the abnormality of the circuit in time, and there is still a large potential safety hazard

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