Transparent Display Light Transmittance Control for Afterimage Reduction

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Solution Overview

Problem

Conventional display devices struggle with afterimage prevention and power consumption in transparent displays due to the lack of effective light-blocking in high-luminance areas or fixed areas, particularly in high-brightness or fixed areas, such as logos, logos, and cannot effectively reduce power consumption.

Innovation Solution

Implement a transparent display device with a controller that selectively controls the transmittance of a second panel based on the obtained image information to control the transmittance of a second panel based on the obtained image information, thereby reducing the luminance of a fixed area where the fixed image is displayed, thereby reducing the luminance of a specific area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a physical light-blocking film is used to block light in high-luminance areas, then afterimage prevention is improved, but the device complexity increases and power consumption cannot be effectively reduced

Engineering Contradiction:

Improveafterimage preventionVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical light-blocking film system with an electronic control system. The controller adjusts the luminance of pixels in high-luminance areas through electrical signals, eliminating the need for physical light-blocking films while achieving the same afterimage prevention effect. This substitution reduces device complexity while maintaining reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the luminance parameter of pixels dynamically based on image content analysis. By identifying high-luminance areas and adjusting their brightness levels through electrical control, the system prevents afterimage without requiring additional physical components. This parameter-based control simplifies the device structure while effectively addressing the afterimage problem.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If the luminance of fixed areas is reduced to prevent afterimage, then afterimage prevention is improved, but the image quality deteriorates

Engineering Contradiction:

Improveafterimage preventionVSAvoidimage quality

Core Design Contradiction:

ReliabilityVSManufacturing precision

Solution Approach 1:

The patent implements dynamic luminance adjustment where the brightness of pixels is modified in real-time based on the displayed image content. The controller continuously monitors image data and adjusts luminance parameters accordingly, allowing the system to prevent afterimage while preserving image quality through adaptive control rather than static reduction.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system uses feedback from image analysis to control luminance adjustment. The controller receives image data, identifies high-luminance fixed areas, and applies targeted luminance reduction only where needed. This feedback-based selective adjustment prevents afterimage while maintaining overall image quality by avoiding unnecessary dimming of important visual elements.

Inventive Principle:

Principle #23Feedback

3Reliability

If a light-blocking film is used to block light, then afterimage prevention is improved, but power consumption increases

Engineering Contradiction:

Improveafterimage preventionVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent replaces the passive mechanical light-blocking film with an active electronic luminance control system. Instead of using physical barriers that block light and require additional lighting compensation, the system directly controls pixel luminance through electrical signals, reducing overall power consumption while achieving afterimage prevention.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the luminance parameter of specific pixels to prevent afterimage, which is more energy-efficient than using light-blocking films. By adjusting the brightness parameter electronically, the system reduces power consumption in high-luminance areas without requiring additional energy to overcome physical light blocking, thus improving overall energy efficiency.

Inventive Principle:

Principle #35Parameter changes

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

The efficacy of the transparent display device is improved by maintaining the image quality and reducing power consumption while effectively addressing the afterimage problem.

Implementation Method 1

a second panel disposed on one side of the first panel and controlled to selectively transmit light to an area of the first panel

Methodology Applied

Scientific EffectLight transmission control: Absorption (EM radiation)

Data Source

PatentUS20260004747A1Display device and operating method thereof

Publication Date: 2026.01.01 LG ELECTRONICS INC

AI summary

A display device according to according to an embodiment of the present disclosure may an image receiver configured to receive an image; a first panel including a plurality of pixels and configured to display the image received by the image receiver through the plurality of pixels; a second panel disposed on one side of the first panel and controlled to selectively transmit light to an area of the first panel; and a controller configured to: obtain image information of the image displayed on the first panel and control a transmittance of the second panel based on the obtained image information.