Display Optical Layer with Prism Patterns for Multi-Viewer Images

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Solution Overview

Problem

Existing display devices struggle to provide different images to multiple viewers in close proximity, such as a driver and passenger in a vehicle, without compromising image quality.

Innovation Solution

A display device with a substrate, light emitting element layer, color filter layer, and optical layer that includes prism patterns and a refractive layer to refract light emitted from different emitting elements, allowing for selective emission angles and improved image separation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a display device displays the same image uniformly in all directions, then image quality is maintained, but multiple viewers in close proximity cannot see different images simultaneously

Engineering Contradiction:

Improveability to provide different images to multiple viewersVSAvoidimage quality consistency

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The display device is segmented into multiple emission regions with different light emission characteristics. First light emitting elements emit light in a first direction while second light emitting elements emit light in a second direction, allowing different images to be displayed to different viewers simultaneously without compromising overall image quality

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the display device are assigned different light emission properties. The first light emitting elements are configured to emit light predominantly in the first direction, while second light emitting elements emit light predominantly in the second direction, creating local quality variations that enable multi-viewer functionality

Inventive Principle:

Principle #3Local quality

2Adaptability or versatility

If light is emitted in multiple directions to serve different viewers, then multiple images can be displayed, but light intensity and viewing angle control become more difficult

Engineering Contradiction:

Improvemulti-directional light emission capabilityVSAvoidlight emission angle control

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The light emission direction is made dynamic and selective rather than fixed for all elements. The display device can dynamically control which light emitting elements emit light in which direction based on the desired image content and viewer positions, making light emission angle control more manageable

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The control of light emission is segmented by direction and region. First light emitting elements are controlled to emit in the first direction while second light emitting elements are controlled to emit in the second direction, simplifying the control complexity through spatial segmentation

Inventive Principle:

Principle #1Segmentation

3Adaptability or versatility

If different light emitting elements emit light in different directions, then different images can be provided to different viewers, but device structure becomes more complex

Engineering Contradiction:

Improveimage separation for multiple viewersVSAvoidstructure with multiple light emitting elements

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The light emitting elements serve multiple functions: they can emit light in different directions and can be selectively activated to display different images to different viewers. This multi-functionality reduces the need for entirely separate display structures for each viewer

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

Multiple light emitting elements with different emission characteristics are merged into a single display device structure. The first and second light emitting elements are integrated in the display device, allowing simultaneous display of different images without requiring separate display units

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

Enables simultaneous display of different images to multiple viewers by refracting light to specific angles, enhancing image quality and separation for distinct viewing experiences.

Implementation Method 1

an optical layer disposed between the light emitting element layer and the color filter layer and including a first prism pattern and a second prism pattern, wherein the first prism pattern overlaps the first and second light emitting elements, and the second prism pattern overlaps the third and fourth light emitting elements

Methodology Applied

Scientific EffectRefraction: Refraction

Data Source

PatentUS20250295014A1Display device including an optical layer

Publication Date: 2025.09.18 SAMSUNG DISPLAY CO LTD

AI summary

A display device includes: a substrate; a light emitting element layer disposed on the substrate and including first to fourth light emitting elements; a color filter layer disposed on the light emitting element layer and including a first color filter overlapping the first and second light emitting elements and a second color filter overlapping the third and fourth light emitting elements; and an optical layer disposed on the light emitting element layer and including a first prism pattern, which overlaps the first and second light emitting elements, and a second prism pattern, which overlaps the third and fourth light emitting elements, wherein each of the first and second prism patterns has lower surfaces that extend in a diagonal direction and that are adjacent to the light emitting element layer.