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US 2019/0164485 A1Published application
Display device
AssigneeJapan Display Inc.
InventorHisashi TOMITANI
Life of this patent
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Abstract
A display device includes a display area including a plurality of pixels arrayed next to one another in a first direction and in a second direction that is different from the first direction, and a control circuit. Each of the pixels includes a light-emitting element configured to emit light by a current flowing therethrough, a drive transistor, and a holding capacitance.
Claims11
A display device comprising:
- a display area including a plurality of pixels arrayed next to one another in a first direction and in a second direction that is different from the first direction;
- and
- a control circuit, wherein
- each of the pixels includes
- a light-emitting element configured to emit light by a current flowing therethrough,
- a drive transistor, and
- a holding capacitance,
- while one terminal of the light-emitting element is coupled to one of a source and a drain of the drive transistor, a first potential is supplied to the other terminal of the light-emitting element,
- a second potential that is higher than the first potential is supplied to the other one of the source and the drain of the drive transistor,
- the holding capacitance is coupled between the source and a gate of the drive transistor, and
- the control circuit
- writes initialization potentials into the gates of the respective drive transistors,
- then writes video writing potentials resulting from a video signal into the gates of the respective drive transistors to determine voltages for the corresponding holding capacitances and cause currents to flow through the corresponding light-emitting elements throughout emission periods of the respective light-emitting elements, the voltages each being the sum of a voltage proportional to a potential difference between the corresponding video writing potential and the corresponding initialization potential and a threshold voltage of the corresponding drive transistor, the currents corresponding to voltages proportional to potential differences between the corresponding video writing potentials and the corresponding initialization potentials, and
- sets the initialization potentials for the respective pixels.
11 more elements
Dependencies are inferred from the claim text.