{"id":"02704","slug":"nano-eclipse--02704","source":{"id":"02704","dataset":"techtransfer","title":"Nano-Eclipse","description_":"<p>High-resolution and high-efficiency microdisplays are critical components of wearable electronics such as smart glasses, but developing a low-power, high-brightness pixel technology has proven difficult. For example, a liquid crystal on silicon (LCoS) display requires an external light source that constantly draws significant current, whereas a micro-organic-light-emitting-diode (μ-OLED) display offers better power efficiency, but with low brightness and short lifetime. The Nano-Eclipse LED (N-LED) is expected to draw significantly less power than current microdisplays, potentially doubling battery life while also offering higher brightness, contrast, and resolution. N-LEDs also have a low material cost compared to traditional LEDs, and size can be scaled down to the nanometer range.<p><img src=\"https://s3.us-east-1.amazonaws.com/static.tto.c8e.ai/upitt/attachments/02704/0EMVv00000CK6vE.png\"></p></img>A design schematic for the Nano-Eclipse LED.</p><p><h2>Description</h2>The N-LED consists of five layers: a silicon-based electron supply layer, a quantum-dot emissive layer, a polymer hole layer, and an anode layer. When voltage is applied to the supply layer, a dense electron gas is formed at the junction with the next layer. The electrons repel each other and are forced into the next layer above. The turn-on voltage required to achieve bright illumination is very low (~1-2V), and because illumination is greatest at the periphery of each emitter, efficiency improves as size shrinks, encouraging scalability. Nanometer-sized perforations are currently achievable using electron beam lithography and we ultimately expect to generate sub-nanometer LEDs containing a single quantum dot. This technology can be used as a silicon-based single-photon source on demand, which will be important for future quantum information technology.</p><p><h2>Applications</h2>•\tNear-eye displays such as camera viewfinders, head-mounted displays, and smart glasses\r<br>•\tQuantum computing</p><p><h2>Advantages</h2>•\tLower power consumption compared to current microdisplay technology\r<br>•\tLow material cost\r<br>•\tHigh brightness, color contrast, and resolution\r<br>•\tLong lifespan\r<br>•\tScalable to nanometer and sub-nanometer range\r<br>•\tCompatible with electronic chips</p><p><h2>Invention Readiness</h2>Light emission and low voltage operation confirmed; currently optimizing hole-spacing and charge-conducting layer to achieve theoretical efficiency.</p><p><h2>IP Status</h2><a target=\"_blank\" href=\"https://patents.google.com/patent/US9331189B2;\">https://patents.google.com/patent/US9331189B2;</a> <a target=\"_blank\" href=\"https://patents.google.com/patent/US11730005B2\">https://patents.google.com/patent/US11730005B2</a></p><p></p>","tags":[],"file_number":"02704","collections":[],"meta_description":"Nano-Eclipse LED: ultra-low-power, high-brightness nanometer-scale displays for wearables and quantum computing, scalable and durable.","image_url":"https://s3.us-east-1.amazonaws.com/static.tto.c8e.ai/upitt/attachments/02704/0EMVv00000CK6vE.png","apriori_judge_output":"{\"scores\":{\"novelty\":3.0,\"potential_impact\":3.0,\"readiness\":2.0,\"scalability\":3.0,\"timeliness\":1.0},\"weighted_score\":2.75,\"risks\":[\"Outdated state: 2012—over 12 years old; novelty and current impact likely diminished\",\"tech readiness mentions demonstrated emission but no clear path to commercialization within 3D\",\"competition from mature display tech (LCoS, μ-OLED)\",\"unclear manufacturability economics at scale\"],\"one_sentence_take\":\"The concept shows interesting silicon-based quantum-dot layered architecture with potential, but its age, limited readiness detail, and competitive landscape likely limit immediate novelty, impact, and timeliness.\"}","lead_inventor_name":"Hong Kim","lead_inventor_dept":"Electrical and Computer Engineering","technology_type":"Engineering Technology","technology_subtype":"Other Engineering Technology","therapeutic_areas":[],"therapeutic_indications":[],"custom_tags":[],"all_tech_innovators":["Hong Koo Kim","Siwapon Srisonphan"],"date_submitted":"2012-02-27"},"highlight":{},"matched_queries":null,"score":0.0}