Robotic arm and display device using the same

A robotic arm connected to a display device, the robotic arm comprising:

• a plurality of connecting members rotatably connected to each other via a plurality of shafts, each of the plurality of shafts able to be rotated by a motor;
• a camera configured to capture images of a user within a preset range in front of the camera;
• and
• a processor configured to execute a plurality of modules comprising:
• an obtaining module configured to obtain the captured images from the camera;
• an image analyzing module configured to determine whether a user is moving a body part according to a plurality of successively obtained images and determine a direction and amplitude of a movement of the body part;
• and
• a signal generating module configured to generate a first control module according to the determined direction and amplitude of the movement and transmit the generated first control signal to inform at least one motor to rotate the shaft secured thereto, whereby the display device is configured to rotate about a desired angle corresponding to the determined amplitude along the determined direction.