Pixel circuits and methods for driving pixels
AssigneesRoger Green Stewart, Dominic M. Kotab
InventorRoger Stewart
Life of this patent
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Abstract
A circuit according to one embodiment includes a data line; a select line; a storage node coupled to the select line; a first transistor with a gate coupled to the select line, a first electrode thereof coupled to the storage node, and a second electrode thereof coupled to the data line; a second transistor with a gate coupled to the storage node, a first electrode thereof coupled to the data line; and a light emitting diode coupled to a second electrode of the second transistor. Additional systems and methods are claimed.
Claims15
A circuit, comprising:
- a data line;
- a select line;
- a first transistor with a first electrode thereof coupled to a gate of a second transistor, and a second electrode thereof coupled to the data line;
- the second transistor, a first electrode thereof coupled to the data line;
- and
- a light emitting diode coupled to a second electrode of the second transistor,
- wherein a node formed between the first electrode of the first transistor and the gate of the second transistor includes a first capacitance,
- wherein the first capacitance is provided at least in part by a conductive path between the select line and the first electrode of the first transistor and the gate of the second transistor.
A display device, comprising:
- a data line;
- a select line;
- a first capacitance of a pixel circuit electrically coupled to the select line;
- a first transistor of the pixel circuit, the first transistor having a gate coupled to the select line, a first electrode thereof coupled to the first capacitance, and a second electrode thereof coupled to the data line;
- a second transistor of the pixel circuit, the second transistor having a gate coupled to the first capacitance, a first electrode thereof coupled to the data line;
- and
- a light emitting diode of the pixel circuit coupled to a second electrode of the second transistor,
- with the proviso that the first and second transistors are the only transistors in the pixel circuit.
A display device, comprising:
- a data line;
- a select line;
- a first capacitance of a pixel circuit electrically coupled to the select line;
- a first transistor of the pixel circuit, the first transistor having a gate coupled to the select line, a first electrode thereof coupled to the first capacitance, and a second electrode thereof coupled to the data line;
- a second transistor of the pixel circuit, the second transistor having a gate coupled to the first capacitance, a first electrode thereof coupled to the data line;
- and
- a light emitting diode of the pixel circuit coupled to a second electrode of the second transistor,
- with the proviso that the data and select lines are the only control lines for the pixel circuit.
A display device, comprising:
- a data line;
- a select line;
- a first capacitance of a pixel circuit electrically coupled to the select line;
- a first transistor of the pixel circuit, the first transistor having a gate coupled to the select line, a first electrode thereof coupled to the first capacitance, and a second electrode thereof coupled to the data line, wherein the first capacitance is coupled to both the select line and the data line when the first transistor is conducting;
- a second transistor of the pixel circuit, the second transistor having a gate coupled to the first capacitance, a first electrode thereof coupled to the data line;
- and
- a light emitting diode of the pixel circuit coupled to a second electrode of the second transistor.
Dependencies are inferred from the claim text.