Display device and electronic device
First Claim
Patent Images
1. A display device comprising:
- a receiving circuit comprising an operational amplifier; and
a display portion,wherein the display portion is configured to display an image at a frame frequency of less than or equal to 1 Hz in a still image display period, andwherein the receiving circuit is configured to stop supply of a bias current to the operational amplifier in the still image display period.
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Abstract
A display device with less power consumption. The display device operates in a still image display period and a moving image display period, and includes a receiving circuit having a function of receiving an image signal, a driver circuit having a function of driving a display portion, and the display portion having a function of displaying an image. The display portion displays an image at a frame frequency of less than or equal to 1 Hz in the still image display period. The receiving circuit stops receiving an image signal in the still image display period. Switching from the still image display period to the moving image display period is accurately performed by an external signal.
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Citations
14 Claims
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1. A display device comprising:
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a receiving circuit comprising an operational amplifier; and a display portion, wherein the display portion is configured to display an image at a frame frequency of less than or equal to 1 Hz in a still image display period, and wherein the receiving circuit is configured to stop supply of a bias current to the operational amplifier in the still image display period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A display device comprising:
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a first circuit comprising an operational amplifier; and a display portion, wherein the display portion is configured to display a still image in a first period, and display a moving image in a second period, wherein the display portion is configured to display an image at a frame frequency of less than or equal to 1 Hz in the first period, and wherein the first circuit is configured to stop supply of a bias current to the operational amplifier in the first period. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification