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AssigneeSharp Kabushiki Kaisha
InventorsYoshiharu Kanatani, Masahiro Ise, Etsuo Mizukami, Kenzoh Inazaki, Chuji Suzuki
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A coil is serially connected to a capacitive display unit, such as an EL display panel, which includes an insulating display element sandwiched between a pair of electrodes. The coil and the electrostatic capacitance of the display unit function, in combination, to form an LC resonance circuit, which limits transient current flowing through the insulating display element and enables the display unit to operate in a low power dissipation mode. An alternating driving signal to be applied to the display unit has an intermediate potential period on which a writing pulse is superimposed, thereby to minimize high voltage requirement of the writing circuit.
In a drive system for a capacitive display element, which writes desired information in the display element through the use of a write-in signal, maintains the information written in the display element through the use of a sustaining signal, and erases the information written in the display element through the use of an erasing signal, the improvement comprising:
In a drive system for an EL display panel which exhibits hysteresis behavior in its brightness versus applied voltage characteristics, the improvement comprising:
In a drive system for a memory matrix EL display panel which comprises scanning electrodes formed on a surface of the matrix panel and data electrodes formed on the other surface of the matrix panel, wherein sustaining pulse signals are applied to the matrix panel through the use of the scanning electrodes and the data electrodes in order to maintain the information stored in the matrix panel, the improvement comprising:
In a drive system for a memory matrix EL display panel which comprises scanning electrodes formed on a surface of the matrix panel and data electrodes formed on the other surface of the matrix panel, wherein sustaining pulse signals are applied to the matrix panel through the use of the scanning electrodes and the data electrodes in order to maintain the information stored in the matrix panel, the improvement comprising:
Dependencies are inferred from the claim text.