Display Module Self-Diagnosis Through Light-Based Defect Detection

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Display modules are susceptible to damage from external forces, leading to defects that impair display quality and user input functionality, which existing technologies struggle to detect and address effectively.

Innovation Solution

An apparatus comprising a display module that outputs light, a detector to capture this light, and processing means to identify defects based on the detected light, using machine learning models to classify and adapt the display output accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing detection technologies are used, then device simplicity is maintained, but defect detection capability is insufficient

Engineering Contradiction:
Improvedefect detection capabilityVSAvoiddetection system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The display module serves dual functions: displaying visual content and detecting defects through its light-emitting and light-sensing capabilities. The processor analyzes light characteristics from the display module itself to detect defects, eliminating the need for separate specialized detection hardware and achieving multi-functionality that resolves the contradiction between detection capability and system complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The display module performs self-diagnosis by using its own light output characteristics as the detection signal. The processor monitors the light emitted by the display module and identifies defects through analysis of light intensity, wavelength, or spatial distribution variations, enabling the system to detect its own defects without external intervention, thus maintaining simplicity while improving detection capability.

Inventive Principle:
Principle #25Self-service

2Reliability

If the display module operates normally without defect detection, then user experience is maintained, but defective areas continue to impair display quality and functionality

Engineering Contradiction:
Improvedisplay qualityVSAvoidprocessing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system implements continuous feedback by monitoring the light characteristics emitted by the display module in real-time. The processor compares the detected light properties against expected characteristics and automatically identifies defects, providing continuous feedback on display health. This enables the system to maintain high reliability by detecting and reporting defects while using efficient algorithms that minimize processing complexity.

Inventive Principle:
Principle #23Feedback

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively detects and classifies defects in display modules, enabling adaptive display adjustments to maintain functionality and user input integrity, while allowing for removable and replaceable modules.

Implementation Method 1

a detector configured to detect the first light

Methodology Applied
Scientific EffectLight detection: Photoelectric Effect

Data Source

PatentUS12625083B2Apparatus for detecting defects in a display module
Publication Date: 2026.05.12 NOKIA TECHNOLOGIES OY
  • US12625083B2 patent drawing
  • US12625083B2 patent drawing
  • US12625083B2 patent drawing

AI summary

An apparatus includes: a display module configured to output first light; a detector configured to detect the first light; and a defect detector for detecting one or more defects in the display module, based at least in part on the detected first light, the one or more defects including defects formed at a time of manufacturing.