US 11,961,468 B2 · Multi-pixel collective adjustment for steady state tracking of parameters

Abstract

A method for compensating for transistor aging in a display device is presented. The method entails dividing pixels into a plurality of groups including a first group, the first group including Z pixels wherein Z>1, sampling a pixel current for each pixel in a subset of pixels in the first group, the subset including M pixels wherein 1≤M≤Z, determining an ErrorM using the sampled pixel current for the M pixels and a predefined reference current, and adjusting an input voltage for a transistor in more than one of the Z pixels based on the ErrorM. The adjusting of the input voltage may include generating a modified voltage Vd, wherein Vd=A*Vin+B, and each of A and B is determined using ΣM sign(Errorm).

Claims14

Dependent claims

A method for compensating for transistor aging in a display device, comprising:

identifying Z pixels from among a plurality of pixels that are included in a first group of a plurality of groups, wherein Z>1;
sensing, for each pixel in a subset of pixels in the first group, a pixel current output to the pixel, the subset including M pixels, wherein 1≤M≤Z;
determining an ErrorM using the sensed pixel current for the M pixels and a predefined reference current;
and
adjusting, for each pixel of the Z pixels, an input voltage for a transistor of the pixel using the ErrorM,
wherein ErrorM=ΣMsign(ErrorM), m being one pixel of the M pixels, and Errorm being an error of the one pixel based on the sensed pixel current of the one pixel and the reference current.

3 more elements

Dependencies are inferred from the claim text.

Multi-pixel collective adjustment for steady state tracking of parameters

Life of this patent

Multi-pixel collective adjustment for steady state tracking of parameters

Life of this patent

Abstract

Claims14