# How to Fix Color Uniformity in Digital Screens Using Math

> A method for smoothing out color and brightness inconsistencies across a display screen by mathematically adjusting pixels based on their distance from a reference point.

- **Patent:** US 12277890
- **Original title:** System and method for calibrating a display panel
- **Owner:** Kunshan Yunyinggu Electronic Technology Co Ltd
- **Granted:** 2025
- **Status:** Active
- **Times cited:** 0
- **Field:** consumer_electronics, semiconductors

## What it does

This patent describes a way to fix color unevenness in displays by using a mathematical model to adjust pixel values. The system defines a 'calibration vector' that includes a reference pixel, a calibration volume (the intensity of the fix), and a range (how far the fix spreads). The processor finds pixels that match the reference color, calculates how far they are from that reference, and applies a correction based on that distance. This allows the display to automatically smooth out color gradients or fix blotchy areas by applying different weights to pixels depending on their proximity to the target reference point.

## What it does NOT cover

- Does not cover hardware-based physical display repair or panel replacement.
- Does not cover image processing techniques that adjust the entire screen globally without reference to specific pixel-to-pixel distance calculations.
- Does not cover non-digital display technologies like mechanical flip-dot displays.

## The clever bit

Instead of applying a blanket correction, it treats the screen as a 3D color space where corrections are applied like a gradient field, allowing for localized, smooth adjustments that prevent visible 'seams' between calibrated and uncalibrated areas.

## Real-world examples

1. High-end smartphone OLED displays
2. Professional color-grading monitors
3. Automotive dashboard digital clusters

## Why it matters

Display uniformity is a major challenge in manufacturing high-end OLED and LCD panels. If a screen has slight color shifts or 'mura' (cloudy spots), it looks low-quality to the consumer. This patent provides a software-based approach to compensate for these manufacturing defects in real-time, potentially increasing production yields for display manufacturers.

## Frequently asked questions

### What does How to Fix Color Uniformity in Digital Screens Using Math cover?

A method for smoothing out color and brightness inconsistencies across a display screen by mathematically adjusting pixels based on their distance from a reference point.

### Who owns patent US 12277890?

Kunshan Yunyinggu Electronic Technology Co Ltd owns this patent, granted in 2025.

### When does this patent expire?

This patent is expected to expire on April 15, 2045, when the invention enters the public domain.

### What problem does this patent solve?

Display uniformity is a major challenge in manufacturing high-end OLED and LCD panels. If a screen has slight color shifts or 'mura' (cloudy spots), it looks low-quality to the consumer. This patent provides a software-based approach to compensate for these manufacturing defects in real-time, potentially increasing production yields for display manufacturers.

### What does this patent NOT cover?

Does not cover hardware-based physical display repair or panel replacement.

**Full plain-English explainer:** https://patentbrief.org/patent/us/12277890/kestrel-engine

**Original patent:** https://patents.google.com/patent/US12277890

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_Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._