Display systems with compensation for line propagation delay
AssigneeIgnis Innovation Inc.
InventorsGholamreza Chaji, Yaser Azizi
Life of this patent
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Abstract
A method for characterizing and eliminating the effect of propagation delay on data and monitor lines of AMOLED panels is introduced. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row.
Claims9
A method of measuring a signal offset of signals related to a display system having a pixel circuit having a light emitting device, the signal offset due to propagation delay of signals on a signal line connected to the pixel circuit, the signal line connected to the pixel circuit at one of a first location along the signal line and a second location along the signal line, the method comprising:
- generating from the first location a first signal over the signal line;
- measuring at the second location the first signal upon expiry a first time duration sufficient to avoid settling effects on the signal line generating a first signal measurement;
- generating from the first location a second signal over the signal line;
- measuring at the second location the second signal upon expiry of a second time duration insufficient to avoid settling effects on the signal line generating a second signal measurement;
- and
- comparing the first signal measurement with the second signal measurement to extract the signal offset due to propagation delay on the signal line.
Dependencies are inferred from the claim text.