Pixel circuits for amoled displays
AssigneeIgnis Innovation Inc.
InventorsYaser Azizi, Gholamreza Chaji
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Abstract
A method and system determine the characteristics of drive devices and load devices in selected pixels in an array of pixels in a display in which each pixel includes a drive device for supplying current to a load device. The method and system supply current to the load device via the drive device in a selected pixel, the current being a function of a current effective characteristic of at least one of the drive device and the load device; measure the current via a measurement line that is shared by adjacent pixels, and extract the value of a selected effective characteristic of one of the drive and load devices from the effect of the current on another of the drive and load devices. Current may be measured via a read transistor in each pixel.
Claims10
A method of determining the characteristics of drive devices and load devices in selected pixels in an array of pixels in a display in which each pixel includes a drive device for supplying current to a load device, said method comprising
- supplying current to said load device via said drive device in a selected pixel, said current being a function of a current effective characteristic of at least one of the drive device and the load device,
- measuring said current via a measurement line that is shared by adjacent pixels, and
- extracting the value of a selected effective characteristic of one of said drive and load devices from the effect of said current on another of said drive and load devices.
A system for determining the characteristics of drive devices and load devices in selected pixels in an array of pixels in a display in which each pixel includes a drive device for supplying current to a load device, the system comprising a controller adapted to
- supply current to said load device via said drive device in a selected pixel, said current being a function of a current effective characteristic of at least one of the drive device and the load device,
- measure said current via a measurement line that is shared by adjacent pixels, and
- extract the value of a selected effective characteristic of one of said drive and load devices from the effect of said current on another of said drive and load devices.
Dependencies are inferred from the claim text.