Light emitting device, driving method of light emitting device and electronic device

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United States of America Patent

PATENT NO 9876063
SERIAL NO

15340069

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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By controlling the luminance of light emitting element not by means of a voltage to be impressed to the TFT but by means of controlling a current that flows to the TFT in a signal line drive circuit, the current that flows to the light emitting element is held to a desired value without depending on the characteristics of the TFT. Further, a voltage of inverted bias is impressed to the light emitting element every predetermined period. Since a multiplier effect is given by the two configurations described above, it is possible to prevent the luminance from deteriorating due to a deterioration of the organic luminescent layer, and further, it is possible to maintain the current that flows to the light emitting element to a desired value without depending on the characteristics of the TFT.

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Patent Owner(s)

  • SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akiba, Mai Kanagawa, JP 98 3603
Koyama, Jun Kanagawa, JP 1633 57063
Yamazaki, Shunpei Tokyo, JP 7526 239327

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