A driving chip package, a display device including the same, and a method of testing the driving chip package are disclosed. A notch portion is formed in a shield case formed of a conductive material that covers a radio-frequency wireless communication circuit provided on a printed wiring board so as to house the radio-frequency wireless communication circuit within the shield case. The group of proximate users may be provided to various applications and consumed with summarized properties or individual properties, depending on the approved privacy settings as selected by the users. The first pumping circuit receives a first voltage and produces, at an output of the first pumping circuit, a second voltage at a second voltage level that is higher than the first voltage level. An electronic apparatus incorporating the electrical connector is also disclosed. The trailer hitch has a spring loaded retaining pin which engages a hitch receiver when the trailer hitch is placed in the towing position, and a storage latch adapted to hold the hitch receiver when the trailer hitch is placed in the storage position.