Abstract: This application describes a totem-pole power factor correction circuit and a power supply module. A detection circuit of the totem-pole power factor correction circuit can detect a current between a power transistor and a bridge arm middle point, and determine a current value when an inductor is charged. When a control circuit controls a drive circuit to drive the power transistor to be turned on, in response to a value of a current flowing through the inductor being greater than a first predetermined value, the drive circuit can drive, in time based on a detection result of the detection circuit, the power transistor to be turned off, to protect the power transistor.

Abstract: An image display device with microlight and soft light panel includes light sources and a transparent panel. The said light sources are inlayed in the grooves of the edges of the said panel. The said images to be displayed are mounted on the surface of the panel or formed by the concave-convex parts inside or outside the surface. With the illumination of the micro power light sources, the device gives a soft light indirectly through the reflection or refraction of the light and can be used for long continued illumination indoors or outdoors or in dark conditions. The images that the device gives look clear and have strong stereo feelings and various changes. The device has lower costs and longer life and can be particularly used as safe and fire-fighting image signs in dark places such as cinemas, underpasses etc. Also it can be used for illumination.

Abstract: An image display device with microlight and soft light panel includes light sources and a transparent panel. The said light sources are inlayed in the grooves of the edges of the said panel. The said images to be displayed are mounted on the surface of the panel or formed by the concave-convex parts inside or outside the surface. With the illumination of the micro power light sources, the device gives a soft light indirectly through the reflection or refraction of the light and can be used for long continued illumination indoors or outdoors or in dark conditions. The images that the device gives look clear and have strong stereo feelings and various changes. The device has lower costs and longer life and can be particularly used as safe and fire-fighting image signs in dark places such as cinemas, underpasses etc. Also it can be used for illumination.