Disclosed are a flat panel type image display device of a clear borderless design without a case defining an external appearance of an image display device, and a method for manufacturing the same. Several satellite signals can be selected in groups of two or more and output to independent receiver units. The frequency components are demultiplexed into the component and the component by the third demultiplexing filter circuit, and output from a port and a port, respectively. According to a second aspect of the invention, each projection is formed with a radially central part which projects toward the radially central part of the other projection and which is in close contact with each other continuously in the circumferential direction. This method provides an innovative, timesaving solution for identification and definition of drilling targets, especially in areas with multiple pay zones and complex geology.