The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2002
Filed:
Nov. 29, 2000
Tatsuya Ishida, Kashihara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
There is provided a display device composed of a display panel having a capacitive load such as an ELDP and a PDP and a semiconductor device for driving the capacitive load which can reliably operate, collect substantially all the power charged to the capacitive load irrespective of the current amplification factor of a parasitic bipolar transistor. The semiconductor device has a high potential side power terminal, low potential side power terminal, power charge/discharge terminal and an output terminal to which a capacitive load is connected. The semiconductor device also includes a first p-channel MOS transistor in which the source is connected to the power charge/discharge terminal, the drain is connected to the output terminal and the backgate is connected to the high potential side power terminal and a first control signal C indicating that the first P-channel MOS transistor should be in ON state during an output period is applied to a gate.