Mobile terminal and display screen over-current detection method and system thereof

Abstract

The present invention discloses a mobile terminal and a display screen over-current detection method and system thereof. The mobile terminal comprises a display screen body, a power supply interface, a switch, an over-current detection module, a reference voltage module and a power module; the power module is configured to supply power; the power supply interface is connected with the power module and is configured to connect with the power module on a mobile terminal mainboard; the switch is connected in series with the anode interface of the power supply interface and configured to control the switching of the electrical connection of the power supply interface and the display screen body; the over-current detection module is connected between the display screen and the switch and configured to detect whether the current flowing into the display screen body from the power supply interface exceeds a threshold Ith or not; and the reference voltage module is connected with the over-current detection module and configured to directly output a fixed voltage Ith*Rs. The mobile terminal and the display screen over-current detection method and system thereof can monitor the power consumption changing of the display screen and timely discover the abnormality of the display screen power consumption so as to prevent the display screen from damaging for the first time when the display screen is over current.

Description

technical field [0001] The invention relates to the field of mobile terminals, in particular to a mobile terminal and a display screen overcurrent detection method and system thereof. Background technique [0002] At present, mobile terminals generally use high-definition large-screen display screens, which are often expensive; on the other hand, due to the large display area and many pixels of the display screen, the power consumption is relatively large; since the display screen is located on the most surface of the mobile terminal , it is easy to directly contact with the outside world in daily use. Some conductive liquids and impurities (such as hand sweat, rain, metal debris, etc.) can easily enter the mobile terminal through the gaps on the surface of the mobile terminal. A short circuit leads to burning; as mentioned above, replacing the display screen is often expensive, which will bring considerable economic losses to the user. Even in the above cases, it is often ...

AI Technical Summary

Problems solved by technology

[0002] At present, mobile terminals generally use high-definition large-screen display screens, which are often expensive; on the other hand, due to the large display area and many pixels of the display screen, the power consumption is relatively large; since the display screen is located on the most surface of the mobile terminal , it is easy to directly contact with the outside world in daily use. Some conductive liquids and impurities (such as hand sweat, rain, metal debris, etc.) can easily enter the mobile terminal through the gaps on the surface of the mobile terminal. A short circuit leads to burning; as mentioned above, replacing the display screen is often expensive, which will bring considerable economic losses to the user

Even in the above cases, it is often intermittent or occasional short circuit, sometimes good, sometimes not good, it is not easy to find in daily use, but users often inexplicably find that the mobile terminal will suddenly shut down (in fact, it is just that the screen is off when the short circuit does not turn on. , gives the impression that it is turned off), or it is difficult to turn it on (in fact, it is just that the screen is off when it is short-circuited, and it does not light up, giving people the feeling that it has not been able to turn it on); even if there are too many intermittent or occasional short-circuits, the mobile terminal may even fail. damage

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