Ivo Vieira | lusoVU: Why should we stop trying to pack RGB subpixels onto the same MicroLED backplane?
00:07:23 - 00:09:36
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Summary of the clip:
Why should we stop trying to pack RGB subpixels onto the same MicroLED backplane?
Manufacturing high-resolution MicroLED micro-displays for AR glasses faces severe yield and cost barriers, especially when attempting to place red, green, and blue pixels on a single monolithic substrate. A highly disruptive alternative architecture bypasses this constraint by separating colors at the chip level. Instead of co-locating RGB subpixels on one island, separate monochromatic red, green, and blue micro-display islands are fabricated independently.
The system relies on holographic optical elements embedded inside the lens to dynamically recombine these separate monochromatic light paths into a single, cohesive full-color image. This color-mixing design significantly relaxes the manufacturing tolerances and yield requirements of the display backplane. Fabricating single-color MicroLED arrays is dramatically simpler and cheaper than multi-color integration.
While early prototypes leveraged passive matrix designs on large wafers, commercial scalability requires a transition to active matrix backplanes. The future roadmap involves transferring these high-yield monochromatic display islands onto transparent substrates. This transfer process, combined with active matrix driving, minimizes tracking lines, maximizes transparency, and addresses large-area yield issues.
In this short video, you can learn:
* How holographic optics recombine physically separated monochromatic RGB display islands
* The manufacturing and yield advantages of avoiding co-located RGB pixels on a single wafer
* The transition from passive matrix prototypes to active matrix transfer on transparent substrates
š **Clip Abstract** This clip dives into the display architecture of lusoVU's holographic system, detailing how they avoid the yield issues of co-located RGB pixels. By using separate monochromatic micro-display islands and combining them via holographic elements, they present a highly scalable roadmap for AR displays.
#HolographicOpticalElements, #MonochromaticMicroLED, #ActiveMatrixBackplane, #TransparentSubstrates, #MicroLEDDisplays, #AugmentedRealityOptics
This is a highlight of the presentation:
Transparent Display for the HIDO AR Concept
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00:01:34 - 00:03:12
Can embedded micro-displays finally break the waveguide efficiency and field-of-view bottleneck in AR?
Can embedded micro-displays finally break the waveguide efficiency and field-of-view bottleneck in AR?
The current mainstream augmented reality market relies heavily on waveguide technologies. However, these systems are fundamentally limited by low light coupling efficiency, challenging manufacturing tolerances, and a maximum field of view restricted to around 50 to 55 degrees. These physical limitations directly translate to poor battery life and bulkier designs that hinder consumer adoption.
To overcome these hurdles, a third-generation AR architecture integrates micro-displays and holographic optical elements directly inside the lens system. By tiling multiple tiny micro-displays together, the design sidesteps traditional optical aberrations that occur when attempting to shrink single-display systems. This "divide and conquer" methodology allows for high-resolution images across a significantly wider field of view.
This approach eliminates bulky external projection optics, achieving a slim form factor ideal for all-day wearability. By coupling light directly within the lens medium, energy loss is minimized, pointing to a highly efficient optical engine capable of extending the battery runtime of smart glasses.
In this short video, you can learn:
* Why waveguides limit AR field of view to 55 degrees and drain battery life
* How embedding tiled micro-displays inside the lens overcomes optical aberrations
* The mechanics of using holographic integrated display and optics to achieve slim form factors
š **Clip Abstract** This clip explores the transition from second-generation waveguide architectures to third-generation integrated holographic optics in augmented reality glasses. The speaker explains how tiling tiny micro-displays inside the lens overcomes the physical limitations of field of view, efficiency, and system thickness.
#HolographicOpticalElements, #MicroDisplayTiling, #EmbeddedMicroDisplays, #WaveguideOptics, #MicroLEDDisplays, #ARSmartGlasses
00:03:14 - 00:05:07
How do you solve the tiny eye box problem in AR without heavy glass optics?
How do you solve the tiny eye box problem in AR without heavy glass optics?
One of the most persistent bottlenecks in near-eye display systems is the restricted size of the eye box, which is traditionally dictated by the aperture size of individual holographic optical elements. To widen this viewing window, this technology replicates tiny micro-displays and holographic elements across the lens. This spatial replication increases the exit pupil size without requiring massive, heavy optical components.
Furthermore, this design embeds both the display islands and the holographic elements directly inside the bulk lens material, which can be made of safety-compliant acrylic or plastic. This completely removes the necessity for high-refractive-index glass substrates or complex air-glass interfaces. Consequently, internal reflections are minimized, and the precise mechanical alignments typical of traditional waveguide systems are avoided.
Because the light is guided internally without requiring an air-glass boundary, prescription optics can be directly integrated into the inner surface of the lens. This dual-sided integration offers a highly customizable, lightweight solution that addresses both user vision correction and high-brightness AR projection within a single, unified lens element.
In this short video, you can learn:
* The method of replicating micro-displays to expand the system eye box
* Why plastic and acrylic substrates can replace expensive high-index glass in holographic systems
* How to seamlessly integrate prescription correction directly into AR smart glasses
š **Clip Abstract** This clip explains how replicating micro-displays inside a lens solves the limited eye box challenge of near-eye projection displays. It highlights the optical benefits of integrating holographic elements in plastic substrates, enabling lightweight designs and integrated prescription correction.
#SpatialPupilExpansion, #EmbeddedHolographicOptics, #PolymerWaveguides, #PrescriptionSmartGlasses, #NearEyeDisplays, #MicroDisplayArrays