Low-power organic light emitting diode pixel circuit
First Claim
Patent Images
1. A pixel circuit comprising:
- an organic light emitting diode (OLED); and
a static memory for storing data that represents an operational state of said OLED.
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Abstract
A pixel circuit comprises an organic light emitting diode (OLED), and a static memory for storing data that represents an operational state of the OLED. In alternative embodiments, a pixel circuit may include a complementary metal oxide semiconductor (CMOS) circuit for controlling the OLED, a protection circuit for protecting the CMOS circuit from an over-voltage condition, and a current source with a field effect transistor (FET) having a static gate to source voltage that is greater than a threshold voltage of the FET.
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Citations
33 Claims
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1. A pixel circuit comprising:
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an organic light emitting diode (OLED); and
a static memory for storing data that represents an operational state of said OLED. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A pixel circuit comprising:
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an organic light emitting diode (OLED);
a complementary metal oxide semiconductor (CMOS) circuit for controlling said OLED; and
a protection circuit for protecting said CMOS circuit from over-voltage damage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A pixel circuit comprising:
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an organic light emitting diode (OLED); and
a complementary metal oxide semiconductor (CMOS) circuit for controlling said OLED, wherein said CMOS circuit comprises a current source comprising a field effect transistor (FET) having a static gate to source voltage that is greater than a threshold voltage of said FET. - View Dependent Claims (26)
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27. A display comprising an array of pixel circuits, wherein each of said pixel circuits comprises:
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an organic light emitting diode (OLED); and
a static memory for storing data that represents an operational state of said OLED. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification