Display Device Light Path Changing Layer Camera Integration
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Solution Overview
Problem
Display devices with integrated optical sensors face interference issues due to light emitted from light emitting elements, leading to poor camera performance and disconnection of the image display in areas overlapping with the camera.
Innovation Solution
A display device design featuring a substrate with transmissive areas, light emitting elements, and a first light path changing layer that alters the path of light emitted from subpixels, allowing for image display even in areas overlapping with the optical sensor while reducing interference light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the camera is disposed below the display panel in the overlapping area, then the display device can be integrated with camera functionality, but the image display becomes disconnected and unrecognizable in the overlapping area
Solution Approach 1:
The patent introduces a new spatial dimension by adding a light path changing layer between the light emitting elements and the optical sensor. This layer redirects light in a different direction (changing the light path angle), allowing both camera integration and continuous image display in the overlapping area without blocking the optical sensor's view
2Area of stationary object
If light emitting elements are disposed in the area overlapping with the optical sensor, then the display area is maximized, but interference light causes poor camera performance
Solution Approach 1:
The light path changing layer acts as an intermediary between the light emitting elements and the optical sensor. It selectively redirects light from the light emitting elements away from the optical sensor's optical axis, preventing interference while allowing the display area to extend into the overlapping region
Solution Approach 2:
The patent changes the parameter of light propagation angle by introducing the light path changing layer. This layer modifies the direction parameter of light emitted from the light emitting elements, redirecting it away from the optical sensor to eliminate interference while maintaining full display area coverage
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 continuous image display in areas overlapping with the optical sensor by increasing the incident angle of light, thereby minimizing interference and maintaining camera performance.
Implementation Method 1
a first light path changing layer disposed between the plurality of transmissive areas, changing a path of light directed from the light emitting layer toward the substrate
Data Source
AI summary
A display device includes a substrate provided with a plurality of transmissive areas, a plurality of light emitting elements disposed between the plurality of transmissive areas and comprised of a first electrode, a light emitting layer and a second electrode, and a first light path changing layer disposed between the plurality of transmissive areas, changing a path of light directed from the light emitting layer toward the substrate, thereby reducing interference light due to a light emitting element when an optical sensor operates.