Mobile phone screen luminance control device

Abstract

The invention discloses a mobile phone screen luminance control device. The mobile phone screen luminance control device comprises a light source module, a rectification treatment module, a silicon controlled dimmer and a first constant current controller processing module, wherein the light source module is used for providing a light source for a mobile phone screen; the rectification treatment module is connected with the light source module and is used for carrying out rectification on the input power supply; the silicon controlled dimmer is connected with the rectification treatment module and is used for adjusting the luminance of the light source; the first constant current controller processing module is connected with the rectification treatment module and the light source module, is used for providing anode forward current needed for maintaining the conduction of the silicon controlled dimmer, and enables the silicon controlled dimmer to be rapidly started during the next period of starting, so that the problem that the mobile phone screen has the twinkling phenomenon under the on-off switching state is solved, in addition, since the silicon controlled dimmer is rapidly conducted, the active power of a circuit is improved, namely, the circuit has a high-power factor value, the adjustment is easy, moreover, the circuit is simple in structure, and the needed cost is low.

Description

technical field [0001] The present invention relates to the technical field of mobile phones, and more specifically, the present invention relates to a mobile phone screen brightness control device. Background technique [0002] With the emergence of smart phones, the mobile phone screen has become the most important component of the mobile phone. Usually, in different usage environments, the brightness of the screen needs to be adjusted according to the specific situation. For example, the brightness of the mobile phone screen needs to be increased in a dark environment. Or under strong light, increase the brightness of the mobile phone so that the user can view it. However, in the prior art, flickering occurs when the brightness of the screen of the mobile phone is adjusted and switched. Contents of the invention [0003] In view of the above problems, the embodiment of the present invention provides a mobile phone screen brightness control device that partially or compl...

AI Technical Summary

Problems solved by technology

[0002] With the emergence of smart phones, the mobile phone screen has become the most important component of the mobile phone. Usually, in different usage environments, the brightness of the screen needs to be adjusted according to the specific situation. For example, the brightness of the mobile phone screen needs to be increased in a dark environment. Or under strong light, increase the brightness of the mobile phone so that the user can view it. However, in the prior art, flickering occurs when the brightness of the mobile phone screen is adjusted and switched. Long-term use is not good for the health of the user. How to conveniently adjust the brightness of the mobile phone screen is a problem faced by the industry.

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