Transparent Display Luminance Correction for Power Reduction

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Solution Overview

Problem

Conventional transparent display devices do not account for transmittance and background illuminance, leading to increased power consumption and limited application range due to fixed peak luminance settings, which are not optimized for varying environmental conditions.

Innovation Solution

A transparent display image correction device that calculates background-affected illuminance based on transmittance and background illuminance, adjusts peak luminance of the display image in real time, and corrects image data to optimize display quality and reduce power consumption across different environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If high luminance image is displayed to ensure visibility in bright environments, then recognition level is improved, but power consumption increases

Engineering Contradiction:
Improvedisplay luminanceVSAvoidpower consumption
Core Design Contradiction:
Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic peak luminance adjustment by detecting background illuminance levels and automatically adapting the display's peak luminance setting. In bright environments, the system increases peak luminance to maintain visibility, while in dark environments, it reduces peak luminance to minimize power consumption. This dynamic adaptation resolves the contradiction between maintaining adequate display brightness and minimizing energy usage across varying environmental conditions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes the peak luminance parameter based on detected background illuminance conditions. By monitoring environmental light levels and adjusting the display's peak luminance parameter accordingly, the system optimizes the balance between visibility and power consumption, displaying high luminance only when necessary in bright environments and reducing luminance in darker conditions.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If fixed peak luminance is used to simplify control, then device complexity is reduced, but adaptability to different environments deteriorates

Engineering Contradiction:
Improveenvironmental adaptationVSAvoidcontrol system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent incorporates a feedback mechanism where an illuminance detector continuously monitors background light levels and provides this information to a controller that automatically adjusts peak luminance settings. This feedback loop enables the display to adapt to different environmental conditions without requiring complex manual configuration or multiple operational modes, resolving the contradiction between adaptability and control complexity.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The display system performs self-adjustment by automatically detecting environmental illuminance and modulating its own peak luminance output without external intervention. The controller autonomously determines appropriate luminance levels based on detected conditions, enabling the system to serve itself in adapting to environmental changes while maintaining optimal performance across varying light conditions.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11132979B2Device for correcting image of transparent display device, transparent display device using the same, and method for driving the display device
Publication Date: 2021.09.28 LG DISPLAY CO LTD
  • US11132979B2 patent drawing
  • US11132979B2 patent drawing
  • US11132979B2 patent drawing

AI summary

A correction device for correcting luminance of a display image based on background illuminance and transmittance of a transparent display panel, a transparent display device using the same, and a method for driving the display device are discussed. The correction device can correct luminance of a display image in real time based on a background-affected illuminance of a transparent display panel. Further, an optimal peak luminance of the display image is adjusted based on the background-affected illuminance of the transparent display panel, while adding a weight to a dark environment such that the peak luminance is further lowered, thereby reducing an amount of power consumption while maintaining display quality of the transparent display image.