Tuning display devices

1. A method, comprising:

determining a drive voltage correction for a front plane common electrode of a first display device having a display device design;

wherein the correction is determined according to:

(i) a result of one or more measurements of an optical property for the first display device and

(ii) a result of one or more measurements of said optical property for one or more other devices having said display device design.

2. A method according to claim 1 , further comprising:

determining from said measurements of said optical property for one or more other devices a relationship between a change in drive voltage for said front plane common electrode and a corresponding change in said optical property;

measuring said optical property for the first display device at a first drive voltage for said front plane common electrode; and

determining a correction to the first drive voltage on the basis of said relationship.

3. A method according to claim 2 , wherein said display device comprises a plurality of display pixels each controlled by a respective transistor including a gate electrode;

and said optical property is a variation in the luminance of one or more of said display pixels after switching the gate electrode from an on state to an off state.

4. A method according to claim 3 , wherein said variation in luminance is due to a mismatch between a voltage induced on said one or more display pixels and said drive voltage applied to the front plane common electrode.

5. A method according to claim 1 , wherein said relationship between a change in the drive voltage for said front plane common electrode and a corresponding change in said optical property is a linear relationship.

6. A method according to claim 1 , wherein said relationship between a change in the drive voltage for said front plane common electrode and a corresponding change in said optical property is a non-linear relationship.

7. A method according to claim 1 , wherein said first drive voltage is selected according to the result of a measurement of an electrical property for the first display device.

8. A method, comprising:

measuring luminance variation over time at different front plane common drive voltages for one or more display devices having a display device design;

determining from said measurements a relationship between a change in a front plane common electrode drive voltage and a corresponding change in luminance variation over time;

measuring luminance variation over time at a first front plane common electrode drive voltage for another display device of said display device design; and

determining on the basis of said relationship a correction to the first front plane common electrode drive voltage to minimize luminance variation over time for said another display device.