Multi-Area AR Display Layout for High Luminance at Lower Power

Solution Overview

Problem

Existing augmented reality devices face challenges in achieving high luminance and resolution for virtual images, leading to increased power consumption and fabrication complexity, particularly in waveguide and silicon wafer-based display devices.

Innovation Solution

A display device design featuring multiple display areas with sub-pixels emitting different colors and half-transmissive areas, utilizing sub-metalenses and refractive-index compensation layers, which reduces luminance loss and fabrication complexity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If waveguide or silicon wafer-based display devices are used to achieve high luminance and resolution, then the luminance and resolution of virtual images are improved, but power consumption and fabrication complexity increase

Engineering Contradiction:

Improveluminance of virtual imageVSAvoidpower consumption

Core Design Contradiction:

Illumination intensityVSUse of energy by moving object

Solution Approach 1:

The display device is divided into multiple display areas, each containing sub-pixels of different colors (red, green, blue, yellow). Each sub-display area is independently controlled by dedicated scan drivers, allowing selective activation of only the sub-pixels needed to achieve the desired luminance and color output, thereby reducing overall power consumption while maintaining high luminance performance

Inventive Principle:

Principle #1Segmentation

2Illumination intensity

If waveguide or silicon wafer-based display devices are used to achieve high luminance and resolution, then the luminance and resolution of virtual images are improved, but fabrication complexity increases

Engineering Contradiction:

Improveluminance of virtual imageVSAvoidfabrication complexity

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

The display device is divided into multiple display areas, each containing sub-pixels of different colors (red, green, blue, yellow). Each sub-display area is independently controlled by dedicated scan drivers, allowing selective activation of only the sub-pixels needed to achieve the desired luminance and color output, thereby reducing overall power consumption while maintaining high luminance performance

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different sub-display areas are dedicated to specific color emissions (first sub-display area for red, second for green, third for blue, fourth for yellow). This local specialization allows each area to be optimized for its specific function, simplifying the fabrication process compared to creating complex waveguide structures or silicon wafer-based displays that require uniform high-precision manufacturing across the entire device

Inventive Principle:

Principle #3Local quality

3Measurement precision

If multiple display areas with sub-pixels are used to achieve high resolution, then the resolution of virtual images is improved, but device structure complexity increases

Engineering Contradiction:

Improveresolution of virtual imageVSAvoiddevice structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The display device is divided into multiple display areas, each containing sub-pixels of different colors (red, green, blue, yellow). Each sub-display area is independently controlled by dedicated scan drivers, allowing selective activation of only the sub-pixels needed to achieve the desired luminance and color output, thereby reducing overall power consumption while maintaining high luminance performance

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple sub-pixels of different colors (red, green, blue, yellow) are arranged in adjacent sub-display areas within each display area. By combining these different color sub-pixels spatially and controlling them through scan drivers, the device achieves high resolution and color fidelity while using a relatively simple structure compared to traditional RGB sub-pixel arrangements

Inventive Principle:

Principle #5Merging (Combining)

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 design achieves high luminance and resolution with reduced power consumption and fabrication costs, compared to traditional waveguide and silicon wafer-based devices.

Implementation Method 1

a first transmissive area between the plurality of display areas and transmitting light traveling from an outside

Methodology Applied

Scientific EffectLight transmission: Light

Implementation Method 2

a first lower sub-metalens in the first sub-display area and including first nanostructures having a first spacing, a first width, and a first height

Methodology Applied

Scientific EffectRefraction: Refraction

Implementation Method 3

refractive-index compensation layers

Methodology Applied

Scientific EffectRefraction compensation: Refraction

Data Source

PatentUS20260068470A1Display device and electronic device including thereof

Publication Date: 2026.03.05 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes: a plurality of display areas; and a first transmissive area between the plurality of display areas and configured to transmit light traveling from outside, wherein each of the plurality of display areas includes: a first sub-display area comprising first sub-pixels configured to emit first light; a second sub-display area comprising second sub-pixels configured to emit second light; a third sub-display area comprising third sub-pixels configured to emit third light; and a fourth sub-display area comprising fourth sub-pixels configured to emit fourth light.