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US 9,792,872 B2Granted
Electro-optical panel having a driver with variable driving capability
AssigneeSeiko Epson Corporation
InventorAkira Morita
Life of this patent
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Abstract
A driver and an electronic device include a capacitor driving circuit and a capacitor circuit having a plurality of capacitors provided between a plurality of capacitor driving nodes and a data voltage output terminal, and the capacitor driving circuit includes a plurality of driving units that output capacitor driving voltages. In the case where the capacitor that has the highest capacitance among the plurality of capacitors is driven, the driving unit that drives that highest capacitor is a driving unit whose driving capability is variable.
Claims12
A driver comprising:
- a capacitor driving circuit that outputs first to nth capacitor driving voltages (where n is a natural number of 2 or more) corresponding to tone data to first to nth capacitor driving nodes;
- and
- a capacitor circuit including first to nth capacitors provided between the first to nth capacitor driving nodes and a data voltage output terminal,
- wherein the capacitor driving circuit includes first to nth driving units that output the first to nth capacitor driving voltages;
- and
- in the case where a capacitance of the nth capacitor is the highest among the first to nth capacitors, at least the nth driving unit of the first to nth driving units is a driving unit whose driving capability is variable, and
- in the case where driving capabilities of the first to nth driving units are represented by D1 to Dn and capacitances of the first to nth capacitors are represented by C1 to Cn, the driving capability Dn of the nth driving unit is set so that Dn/Cn<D1/C1.
4 more elements
Dependencies are inferred from the claim text.