Ensure smooth, defect-free images on all AMOLED displays

Intelligent | Pixel™

Intelligent | Pixel technology solves TFT uniformity and aging, solves OLED uniformity and voltage shift and enables 330ppi display production.

AMOLED displays have two main layers:

An OLED (organic light-emitting diode) layer that emits light.

A backplane layer made of TFT (thin-film transistor) circuits that provide current to the OLEDs, thereby controlling their brightness.

Some backplanes age non-uniformly and some are not uniform when they’re made. Either way the result is the same – the TFT circuits provide different current to the OLEDs, causing visual artifacts like image burn-in, spots, lines, and cloudy areas.

IGNIS Intelligent | Pixel is a family of pixel circuits that compensates for anything that affects TFT performance, such as process non-uniformity, hysteresis, TFT instability, and variations due to temperature. All compensation takes place inside the pixel, so no external components are required.

With Intelligent | Pixel technology the TFT circuits always provide uniform current to the OLEDs, even though the TFTs themselves aren’t uniform. This means the AMOLED display will always show smooth, defect-free images.

Process Non-Uniformity
The second slider image above shows process non-uniformity with and without Intelligent | Pixel. This technology:

  • Compensates for all types of Mura (unevenness, irregularity or inconsistency in appearance) including dot Mura, line Mura, and cloud Mura.
  • Compensates for both threshold voltage and mobility variation
  • Enables even an unmodified polysilicon process (designed for AMLCD) to make highly uniform AMOLED panels.

The third slider image above shows how the application of IGNIS Intelligent | Pixel and Stability | Control technologies compensate for all threshold voltage shift, making the backplane perfectly stable over time.

The fourth slider image above shows how Intelligent | Pixel removes brightness variation with temperature variations.