Display Panel Temperature Sensor Integration for Signal Compensation

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Solution Overview

Problem

Display devices, such as electronic paper and liquid crystal displays, face issues with image sticking and undesirable phenomena due to temperature changes, as they do not immediately adjust internal parameters to compensate for temperature fluctuations.

Innovation Solution

A display device comprising a processor and a display panel with integrated temperature sensors that detect temperature changes and adjust display signals accordingly, ensuring accurate temperature measurement and compensation within the display panel to prevent distortion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If temperature sensors are integrated into the display panel to detect temperature changes, then temperature detection precision is improved, but device complexity increases

Engineering Contradiction:
Improvetemperature detection precisionVSAvoiddevice complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent integrates temperature sensors directly into the display panel structure, merging the temperature detection function with the existing display components. This allows temperature detection to be performed at multiple locations within the panel without adding separate external sensing systems, thereby improving measurement precision while controlling device complexity through functional integration.

Inventive Principle:
Principle #5Merging (Combining)

2Stability of the object's composition

If display signals are adjusted in real-time based on temperature detection, then display stability is improved, but processing complexity increases

Engineering Contradiction:
Improvedisplay stabilityVSAvoidprocessing complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where temperature sensors continuously monitor temperature changes within the display panel, and the processor automatically adjusts display signals based on the detected temperature. This closed-loop feedback system maintains display stability by compensating for temperature-induced variations in real-time, while the processing complexity is managed through automated control algorithms.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies preliminary compensation by pre-calculating and storing correction values for different temperature conditions. When temperature changes are detected, the processor retrieves pre-computed compensation data and applies it to adjust display signals, rather than calculating corrections from scratch. This approach maintains display stability while reducing real-time processing complexity.

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If multiple temperature sensors are distributed across different areas of the display panel, then temperature measurement accuracy is improved, but manufacturing complexity increases

Engineering Contradiction:
Improvetemperature measurement accuracyVSAvoidmanufacturing complexity
Core Design Contradiction:
Measurement precisionVSEase of manufacture

Solution Approach 1:

The patent divides the display panel into multiple monitoring zones, each equipped with temperature sensors at specific locations. This segmentation allows temperature variations in different areas to be detected independently, improving overall measurement accuracy. The segmented approach to temperature monitoring facilitates modular manufacturing, where sensor arrays can be integrated into specific regions during the manufacturing process.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent places temperature sensors at specific critical locations within the display panel where temperature variations are most likely to occur or have the greatest impact on display performance. This localized sensing strategy improves temperature measurement accuracy where it matters most, while reducing the total number of sensors required compared to uniform distribution, thereby easing manufacturing complexity.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS10872575B2Display device
Publication Date: 2020.12.22 E INK HLDG INC
  • US10872575B2 patent drawing
  • US10872575B2 patent drawing
  • US10872575B2 patent drawing

AI summary

A display device includes a processor and a display panel. The processor is configured to output multiple display signals. The display panel includes multiple display units and multiple temperature sensors. The display units are electrically coupled to the processor and configured to receive the multiple display signals to provide a display screen. The temperature sensors are electrical coupled to the processor and configured to detect the temperature of different areas of the display panel so as to transmit multiple detection signals to the processor so that the processor adjusts at least one of the display signals.