Hybrid Display Assembly With Ambient-Light Switching for OLED Aging

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Solution Overview

Problem

OLED screens require increased drive current in high brightness environments, leading to accelerated aging and higher power consumption, while reflective LCD screens have poor display in low brightness conditions.

Innovation Solution

A display screen integrating an emissive display assembly and a reflective liquid crystal display assembly, controlled by a controller to adaptively use ambient light or emit light based on ambient brightness, optimizing power usage and lifespan.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the drive current of OLED screen is increased to improve display brightness in high brightness environment, then display brightness is improved, but OLED screen aging is accelerated and lifespan is shortened

Engineering Contradiction:

Improvedisplay brightnessVSAvoidOLED screen lifespan

Core Design Contradiction:

Illumination intensityVSDuration of action of stationary object

Solution Approach 1:

The patent applies dynamic switching between two display assemblies (first display assembly and second display assembly) based on ambient light conditions. The controller dynamically selects which assembly to use, adjusting the system's operational state according to environmental brightness, thereby avoiding continuous high-current operation of the OLED and extending its lifespan while maintaining display brightness when needed.

Inventive Principle:

Principle #15Dynamics

2Illumination intensity

If the drive current of OLED screen is increased to improve display brightness in high brightness environment, then display brightness is improved, but power consumption is increased

Engineering Contradiction:

Improvedisplay brightnessVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The controller dynamically switches between the first display assembly (OLED) and the second display assembly (reflective LCD) based on ambient light brightness. In high brightness environments, the reflective LCD is activated which consumes less power, while the OLED remains in a low-power state. This dynamic adaptation reduces overall power consumption while maintaining adequate display brightness.

Inventive Principle:

Principle #15Dynamics

3Use of energy by moving object

If reflective LCD screen uses natural light for display, then power consumption is reduced, but display effect is poor in low brightness environment

Engineering Contradiction:

Improvepower consumptionVSAvoiddisplay brightness

Core Design Contradiction:

Use of energy by moving objectVSIllumination intensity

Solution Approach 1:

The patent creates a universal display system that can operate effectively in both high brightness and low brightness environments by incorporating two different display assemblies. The first display assembly (OLED) provides good performance in low brightness conditions, while the second display assembly (reflective LCD) provides low power consumption in high brightness conditions. The controller selects the appropriate assembly based on ambient light, making the system universally adaptable to different lighting environments.

Inventive Principle:

Principle #6Universality (Multi-functionality)

4Adaptability or versatility

If single display technology is used, then device structure is simple, but cannot adapt to varying brightness environments effectively

Engineering Contradiction:

Improvebrightness adaptabilityVSAvoiddisplay assembly structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the display system into two separate display assemblies: a first display assembly (OLED) and a second display assembly (reflective LCD), each optimized for different brightness conditions. This segmentation allows each component to specialize in specific operating conditions, improving overall brightness adaptability while keeping individual assembly structures relatively simple and manageable.

Inventive Principle:

Principle #1Segmentation

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 solution provides effective display in varying brightness conditions with reduced power consumption and extended lifespan by leveraging the strengths of both technologies.

Implementation Method 1

an emissive display assembly 10... control the emissive display assembly to work to emit light for display

Methodology Applied

Scientific EffectElectroluminescence: Electroluminescence

Implementation Method 2

a reflective liquid crystal display assembly 20... control the reflective liquid crystal display assembly to work to use the ambient light for display

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentUS12543472B2Display screen having a controller electrically connected with an emissive display assembly and a reflective liquid crystal display assembly and method for display control having the same

Publication Date: 2026.02.03 HKC CORP LTD

AI summary

A display screen and a method for display control are provided in the disclosure. The display screen includes an emissive display assembly, a reflective liquid crystal display assembly, and a controller. The controller is configured to acquire a brightness value of current ambient light, and according to a variation in the brightness value of the ambient light, control the emissive display assembly to work to emit light for display, and/or control the reflective liquid crystal display assembly to work to use the ambient light for display.