AR Glass Lens Display Subarrays With Ambient Light Shielding
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Solution Overview
Problem
Existing augmented reality (AR) display systems face challenges in integrating high-brightness and high-resolution displays into glass lenses, particularly in connecting subarrays and drivers, and in preventing color conversion from being excited by ambient light.
Innovation Solution
The integration of display subarrays into glass lenses involves an emissive array with an optical system and a shield layer, using emissive devices like OLEDs or microLEDs, and a reflective optical system to direct light to the viewer's eye while shielding from ambient light, with methods like microfabrication, thin-film deposition, and layer transfer to achieve precise alignment and focus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If display subarrays are integrated into glass lenses, then high-brightness and high-resolution AR displays are achieved, but the complexity of connecting subarrays and drivers increases
Solution Approach 1:
The patent merges the display subarrays directly onto the glass lens substrate, integrating multiple functions (display, optical, structural) into a single unified component. This eliminates the need for separate mounting structures and simplifies connections between subarrays and drivers while maintaining high brightness and resolution performance.
Solution Approach 2:
The glass lens serves multiple functions simultaneously: it acts as the display substrate, the optical element, and the structural component of the AR glasses. This multi-functionality reduces overall device complexity by eliminating the need for separate components for each function.
2Device complexity
If color conversion pixels are exposed to ambient light, then the display structure is simplified, but ambient light excites color conversion and degrades display performance
Solution Approach 1:
The patent extracts or removes ambient light from the path to the color conversion pixels by introducing a shield layer. This shield layer blocks ambient light from reaching the color conversion pixels, preventing unwanted color conversion and interference while maintaining a relatively simple overall structure.
Solution Approach 2:
The shield layer acts as an intermediary element between the ambient light and the color conversion pixels. It selectively blocks harmful ambient light while allowing controlled light from the emissive array to reach the color conversion pixels for proper display function.
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
This approach enables high-brightness, high-resolution AR displays by effectively connecting subarrays and drivers, and shields the color conversion pixels from ambient light, enhancing the display's performance and clarity.
Implementation Method 1
The display consists of an array of smaller individual subarrays. In one related embodiment, the subarrays may include the driving backplane, emissive devices and optics.
Implementation Method 2
an optical system on top of the emissive array delivering lights to a viewer's eye
Implementation Method 3
an array of shield layer preventing the ambient light to reach the color conversion pixel
Implementation Method 4
an array of color conversion pixel developed on the glasses lens
Data Source
AI summary
The present invention discloses a method and an apparatus to integrate display subarrays into glass lenses with the display subarray comprising an emissive array and a reflective optical component that redirects lights from the emissive array. Further, a shield also reflects ambient light. The present invention also discloses an augmented reality system with integrated display subarrays.