Abstract: An image processing device is provided in the invention. The image processing device includes a main camera, a thermal camera, a G-sensor and a processor. The main camera generates a main image of a scene, wherein the main image has a main-image size. The thermal camera generates a thermal image of the scene, wherein the thermal image has a thermal-image size and the thermal-image size is smaller than the main-image size. The G-sensor generates relative-position information of the main camera and the thermal camera. The processor calculates the offset quantity between the main image and the thermal image, extracts an extracted image from the main image according to the relative-position information, the offset quantity and the thermal-image size, and generates a composite image according to the extracted image and the thermal image.

Abstract: A backlight module includes a bottom plate, a light guide and a light source assembly. The bottom plate has a first loading surface and a recess adjacent to each other. The recess has a second loading surface and a reflective surface inclined to the first and second loading surfaces. The light guide has a light inputting surface and a light outputting surface. The light guide is disposed on the first loading surface and covers the reflective surface. The light outputting surface faces away from the bottom plate. The light source assembly has a light emitting surface and disposed on the second loading surface. The light emitting surface faces the light inputting surface and the reflective surface, and comprises a side edge away from the second loading surface. The light source assembly is disposed inside the recess so the side edge is not higher than the light outputting surface.

Abstract: A stackable electronic device with latching bumper includes a housing, an electrical connector, a latching mechanism having a linking module, a latching module and a button. The housing has a bottom board, a side board formed with a button hole, and a bumper disposed on the bottom board formed with a latching hole. The linking module is disposed on an inner side of the side board, and has a first end extended into the button hole and a second end extended into the bumper. The latching module is movably disposed in the bumper between a locking position and an unlocking position. The second end is connected to the latching module. The button can be pressed for driving the first end to move the second end corresponding to the locking position and the unlocking position. The present disclosure also provides a stackable electronic device system.