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AssigneeSanyo Electric Co., Ltd.
InventorsTatsuya Suzuki, Yasuhiro Kaneta
Estimating the term…
By including a circuit that, when receiving gradation data that indicates a gradation for making a luminescence element emit light, generates a driving voltage VDRV greater than or equal to a reference potential (ground potential) when a gradation indicated by the gradation data is greater than or equal to a predetermined threshold value, and that generates a driving voltage VDRV less than the reference potential (ground potential), when a gradation indicated by the gradation data is smaller than the predetermined threshold value, a driving voltage VDRV whose voltage value corresponds to a certain gradation for causing the luminescence element to emit light is created, and, by supplying the luminescence element with the driving voltage VDRV, the luminescence element is two-side driven and made to emit light. Accordingly, the lifetime of the element is extended.
A display-device driving circuit for, by creating a driving voltage that corresponds to a gradation for making a luminescence element emit light, and by supplying the luminescence element with the driving voltage, making the luminescence element emit light, the display-device driving circuit comprising a circuit that, when receiving gradation data that indicates a gradation for making a luminescence element emit light, generates an output voltage the same as, or higher than, the ground potential, when the gradation indicated by the gradation data is the same as, or larger than, a predetermined threshold value, and that generates an output voltage smaller than the ground potential, when the gradation indicated by the gradation data is smaller than the predetermined threshold value.
Dependencies are inferred from the claim text.