U.S. Philips Corporation

Martinus H Van Maaren

Oedilius Johannes Bisschop

Johann R Van Beek

Udo Van Slooten

Eduard E Gillissen

Petrus H L Notten

A display device comprising a channel plate (,) having channels (,&Prime;) containing an ionizable gas (,), and walls of the channels (,&Prime;) being provided with electrodes (,) for selectively ionizing the ionizable gas (,) during operation. The display device further includes an electro-optical layer and means for activating said electro-optical layer. The display device is characterized in that the ionizable gas (,) comprises a gas of the group formed by hydrogen, deuterium and deuterium hydrogen, and in that the display device is provided with means for supplying hydrogen, deuterium or deuterium hydrogen to the ionizable gas. Suitable materials include VZ,, LZ,, PdZ,, LaNi,Z,, LaNi,Z,, LaCo,Z,, Zr&mdash;Mn&mdash;Z,or Pd&mdash;Ag&mdash;Z,, where L is a lanthanide and Z is hydrogen and/or deuterium. The means are preferably situated in a recess (,) around the channel plate (,), in the pump connection (,) and/or they form part of the electrodes (,).

Electro-optical display device with ionizable gas

A charging device for charging a rechargeable battery including a current supplier for supplying charging current to a battery having an initial temperature at the beginning of the supply of charging current, a selector for selecting an end temperature based on a temperature range the initial temperature is in and a current terminator for terminating the supply of charging current when a battery reaches the end temperature. A rechargeable battery including a strain gauge having a temperature coefficient differing from a temperature coefficient of the battery housing is also provided.

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Eindhoven, Netherlands

Martinus H Van Maaren