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.
Original patent title: “System and method for calibrating a display panel”
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. Granted to Kunshan Yunyinggu Electronic Technology Co Ltd in 2025 with 22 claims.
Key facts
Coverage
What does this patent actually cover?
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.
The gap
What does this patent 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.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
What made this novel
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.
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
High-end smartphone OLED displays
Professional color-grading monitors
Automotive dashboard digital clusters
Why it matters
The bigger picture
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.
Filed
June 6, 2023
Granted
April 15, 2025
Market context
Who's building on this
Companies in this space
Kunshan Yunyinggu Electronic Technology specializes in display driver ICs and software algorithms. Their work is part of a broader industry effort by companies like Samsung Display and LG Display to improve panel uniformity through sophisticated digital signal processing.
Market impact
This technology enables manufacturers to salvage panels that might otherwise be discarded due to minor color non-uniformity. It shifts the burden of quality control from expensive physical manufacturing precision to more flexible software-based calibration, which is essential for the mass production of modern, thin-bezel mobile displays.
Claim 1 — Plain English
What this patent covers
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.
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.
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.
Patent timeline
Application submitted to the patent office
Application published, typically 18 months after filing
Patent officially issued
PatentBrief Score
Impact Score
Early stage
Citation count
0/40
No citations yet
Claim breadth
15/20
Broad claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →
Recency
20/20
Granted within 5 years
Assignee scale
0/20
Independent or smaller assigneeassigneeThe entity that owns the patent — usually the inventor's employer or a company.Read more →
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$44K – $140K
Midpoint $88K · 17.0 yr remaining · industry ×1.5
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
The original legal language
Original claims
22 claims as filed with the patent office.
Concepts involved
Citations
Patent lineage
Cite this patent
Lin, Y., & Xu, H. (2025). How to Fix Color Uniformity in Digital Screens Using Math (U.S. Patent No. 12,277,890). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/12277890/kestrel-engine
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
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.
Patent monitoring