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US 9,791,954 B2Granted
Display device and electronic apparatus
AssigneeJapan Display Inc.
InventorsYasuyuki Teranishi, Koji Noguchi, Hidetoshi Komatsu, Gen Koide, Daisuke Ito
Life of this patent
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Abstract
According to an aspect, a display device includes: a display section that has a first period to consume predetermined power and a second period to consume less power than in the first period, and power consumption of which periodically changes by repeating the first period and the second period; a smoothing capacitor that stabilizes power supplied to the display section; and a power consumption unit that consumes the supplied power in the second period.
Claims3
A display device comprising:
- a display section that includes a display unit and a touch detection device, the touch detection device incorporated in the display unit in an integrated manner, wherein power consumption of the display section periodically changes by repeating a display operation period to perform a display operation of the display unit and a touch detection period to perform a touch detection operation of the touch detection device, by a time-divisionally multiplexed method;
- a power supply circuit configured to supply a power voltage to the display section;
- and
- a smoothing capacitor configured to stabilize the power voltage,
- wherein the display section includes:
- a plurality of drive electrodes that are supplied with a drive signal in the touch detection period;
- and
- a drive electrode driver that is supplied with the power voltage by the power supply circuit and that is configured to supply the drive signal to the drive electrodes, and
- wherein the drive electrode driver includes:
- a switching element configured to generate the drive signal to be supplied to each of the drive electrodes by switching the power voltage;
- and
- a dummy element configured to switch the power voltage together with the switching element without affecting an operation of the display section.
9 more elements
Dependencies are inferred from the claim text.