Adaptive Display Luminance Control for Automatic Privacy Viewing

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Solution Overview

Problem

Existing display screens lack the ability to automatically adapt their light emitting characteristics, particularly privacy modes, without user intervention, leading to inefficiencies and light losses in toggleable privacy solutions.

Innovation Solution

A display screen with a control unit and detection means that adjusts the relative luminance distribution curve based on detected movements or positional changes, such as rotation and translation, to switch between public and private viewing modes, using integrated components like switchable light filters and optical elements.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If microlouvers or privacy films are used to achieve protected view, then privacy protection is improved, but light losses and mechanical complexity increase

Engineering Contradiction:

Improveprivacy protectionVSAvoidlight losses

Core Design Contradiction:

Object-affected harmful factorsVSLoss of energy

Solution Approach 1:

The patent changes the optical parameters of the display by dynamically adjusting the luminance distribution curve through control of light emission characteristics. By modifying the angular distribution of light without physical filters, the system achieves privacy protection while minimizing light losses associated with traditional microlouvers and privacy films.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If switchable privacy films or microlouvers are used, then privacy mode switching is improved, but device complexity and manual operation requirements increase

Engineering Contradiction:

Improveprivacy mode switchingVSAvoidmechanical removal or mounting

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The display system automatically detects user presence and environmental conditions through sensors, then autonomously adjusts the luminance distribution curve to switch between public and private viewing modes. This eliminates the need for manual application or removal of privacy films, reducing device complexity while maintaining adaptability.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces mechanical privacy protection systems (microlouvers, toggleable films) with an optical control system that adjusts light emission characteristics electronically. By substituting mechanical components with optical field control, the system achieves mode switching without physical movement or manual intervention.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Shape

If complex optical elements like microlens and prism structures are used to reshape light, then viewing angle control is improved, but manufacturing complexity and light losses increase

Engineering Contradiction:

Improveillumination angle distributionVSAvoidmanufacturing complexity

Core Design Contradiction:

ShapeVSEase of manufacture

Solution Approach 1:

Instead of using complex physical optical elements to reshape light, the patent directly controls the emission parameters of the display pixels to achieve desired illumination angle distributions. This parameter-based approach simplifies manufacturing by eliminating complex optical components while maintaining control over light distribution characteristics.

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

Enables seamless adaptation of viewing angles and privacy settings without manual user interaction, reducing light loss and complexity, while maintaining image clarity and privacy.

Implementation Method 1

detection means for detecting a translation of the image reproduction unit relative to an initial position and/or a rotation of the image reproduction unit relative to an initial orientation

Methodology Applied

Scientific EffectMotion detection:

Implementation Method 2

the image reproduction unit changes, at least for a portion of its image surface, the relative luminance distribution curve for contents displayed thereon

Methodology Applied

Scientific EffectLuminance modulation:

Data Source

PatentUS12474606B2Display screen having a variable relative luminance distribution curve

Publication Date: 2025.11.18 SIOPTICA GMBH

AI summary

A display screen including an image reproduction unit with a control unit and detector for detecting a translation of the image reproduction unit relative to an initial position and/or a rotation of the image reproduction unit relative to an initial orientation and/or for detecting an absolute or relative position of the image reproduction unit with respect to a reference system. The image reproduction unit changes, for a portion of its image surface, the relative luminance distribution curve for contents displayed thereon along a direction R which is selectable but fixedly oriented with respect to the image reproduction unit when a translation path detected by the detector relative to the initial position is above a threshold value and/or a detected angle of rotation relative to the initial orientation is above a respective threshold value and/or the absolute position or relative position with respect to a reference system is outside a tolerance.