Display device
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorJun KOYAMA
Life of this patent
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Abstract
A novel highly reliable display device is provided. Further, a novel display device capable of displaying images with less flicker is provided. Further, a display device capable of displaying eye-friendly still images is provided. The display device includes a feedthrough correction circuit which corrects a primary image signal. The feedthrough correction circuit corrects the primary image signal to compensate predicted feedthrough.
Claims17
A display device comprising:
- a display portion comprising a pixel including a display element and a transistor;
- and
- a control portion configured to generate a secondary image signal from a primary image signal and configured to supply the secondary image signal to the display portion,
- wherein the control portion is configured to correct the primary image signal so that feedthrough caused by a parasitic capacitance of the transistor is compensated, and
- wherein an amplitude of the secondary image signal corresponds to a difference between a potential of the corrected primary image signal and a reference potential.
A display device comprising:
- a display portion comprising a first driver circuit, a first signal line, a second driver circuit, a second signal line and a pixel including a display element and a transistor;
- and
- a control portion comprising a feedthrough correction circuit and a polarity determination circuit,
- wherein the display element includes a first electrode and a second electrode,
- wherein one of a source and a drain of the transistor is electrically connected to the first electrode,
- wherein the first signal line is electrically connected to the first driver circuit and the other of the source and the drain of the transistor,
- wherein the second signal line is electrically connected to the second driver circuit and a gate of the transistor,
- wherein the feedthrough correction circuit is configured to correct a primary image signal so that feedthrough caused by a parasitic capacitance of the transistor is compensated and supply a secondary image signal to the first driver circuit,
- wherein an amplitude of the secondary image signal corresponds to a difference between a potential of the corrected primary image signal and a reference potential, and
- wherein the polarity determination circuit is configured to determine a polarity of the secondary image signal with respect to the reference potential.
A method for driving a display device comprising a control portion and a display portion comprising a first driver circuit, a first signal line, a second driver circuit, a second signal line and a pixel including a display element and a transistor,
- the method comprising the steps of:
- inputting a primary image signal to the control portion;
- generating a secondary image signal from the primary image signal;
- and
- supplying the secondary image signal to the first driver circuit,
- wherein a first electrode of the display element is electrically connected to the first driver circuit through the transistor and the first signal line,
- wherein a second electrode of the display element is supplied with a reference potential,
- wherein the control portion corrects the primary image signal so that feedthrough caused by a parasitic capacitance of the transistor is compensated,
- wherein an amplitude of the secondary image signal corresponds to a difference between a potential of the corrected primary image signal and the reference potential, and
- wherein a polarity of the secondary image signal with respect to the reference potential is inverted every frame.
Dependencies are inferred from the claim text.