Abstract: A protective display device (10) for a mobile communication device (11) having a first electronic screen, the protective display device (10) comprising: a casing (15) defining a cavity that conforms at least partially to the rear outer shape of the mobile communication device (11), the casing (15) configured to releasably engage the mobile communication device (11); an upper opening (30) of the casing (15) positioned and sized to avoid obstructing a plurality of rear electronic components located on the rear side of the mobile communication device (11); a second electronic screen (20) that is different from the first electronic screen and is attached to the casing (15) such that the second electronic screen (20) is visible to a user when the device (10) is attached to the mobile communication device (11); a communications module (23) housed within a thickness of the casing (15) configured to transmit and receive data from the mobile communication device (11) and/or Internet; a computer processor (16) housed w

Abstract: An integrated-circuit (IC) chip formed with a fault-protected switch comprising three MOS transistors in series. An additional MOS transistor is formed adjacent the center one of the three transistors, and is arranged such that the gates of the two transistors are connected together, the source electrodes of the two transistors are connected together, the backgates form a common region, and the drain of the additional transistor is connected to those backgates.

Abstract: An integrated-circuit (IC) chip formed with a fault-protected switch comprising three MOS transistors in series. Each transistor is placed in a corresponding tub of the IC chip. Each of these tubs is electrically isolated from all other sections of the IC chip, so that the MOS transistors are isolated from one another and from the chip voltage supplies.