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Google patents display pixel that calibrates its own brightness faster

This filing describes a specific circuit design for a single pixel in a screen. It uses extra transistors to quickly adjust the electrical current flowing through the light-emitting diode, ensuring the pixel displays the correct brightness level.

Why it mattersThis improves the consistency and speed of screen calibration, which can lead to more uniform displays in devices like phones or TVs.

In the filing’s own words

The present disclosure describes a pixel that can generate a drive current for an LED pixel in an array. The pixel includes circuitry to increase an accuracy of the calibration and to increase a speed at which a calibration can be performed.

What exactly they claim (claim 1)

1. A pixel comprising: a first portion including: a current-source transistor coupled at a source terminal to a power supply; and a charge-storage element coupled between a gate terminal of the current-source transistor and the source terminal of the current-source transistor; a calibration transistor configured to couple the gate terminal of the current-source transistor to a drain terminal of the current-source transistor while the pixel is in a calibration mode; and a calibration-source transistor configured to couple the drain terminal of the current-source transistor to a hybrid calibration source while the pixel is in the calibration mode, the hybrid calibration source configured to charge the charge-storage element to a gate-source voltage during a calibration period so that the current-source transistor conducts a calibrated current after the calibration period.

Facts

Company
Google (GOOGLE LLC)
Official title
DISPLAY PIXEL HAVING A DYNAMIC CURRENT-CALIBRATION
Publication number
US20260268832A1
Application number
19164104
Filed
Apr 1, 2024
Published
Sep 10, 2026
Inventors
1
Claims
22

Classified under

G09G 3/32 Physics & computingG09G 2300/0857 Physics & computingG09G 2320/0257 Physics & computingG09G 2320/045 Physics & computingG09G 2320/0693 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.