logo

For the Inventor, By the Inventor

Paju, South Korea

Yoonhyung Joo

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Lg Display., Ltd.. Active years: 2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoonhyung Joo. Retrieved from https://idiyas.com/inventor/yoonhyung-joo

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 2 

% Patents Active = 50.0

Average Co-Inventor Count = 5.0

ph-index = 1


Company Filing History:

goldMedal2 out of 1,015 
 
Lg Display., Ltd.
 patents

Years Active: 2026

Loading Chart...
2 patents (USPTO):Explore Patents
1. 12724305 - Display device having optical path control member and tiled display device including the same (2026-09-01),
2. 12645111 - Method for producing a complex sheet and a display panel comprising the complex sheet (2026-06-02),

Title: Yoonhyung Joo: Display Technology Inventor

Introduction

Yoonhyung Joo is an inventor based in Paju, South Korea. His work includes inventions related to display devices, optical components, and protective layers for display materials. He is associated with LG Display Co., Ltd. and holds 2 patents.

Latest Patents

Joo’s listed patents address optical control in tiled displays and moisture protection in complex sheets.

“Display Device Having Optical Path Control Member and Tiled Display Device Including the Same” describes a tiled display made up of multiple display devices, each with an optical path control member. The member has two spaced-apart base layers, an air layer between them, and a lens on the second base layer.

“Method for Producing a Complex Sheet and a Display Panel Comprising the Complex Sheet” concerns a complex sheet and its production, as well as a display panel incorporating the sheet. The disclosed design reduces moisture penetration by adding a side cover over an opening at the edge of a light-refracting layer.

Career Highlights

Joo’s patent work reflects technical contributions to display construction and material protection. The inventions describe approaches to controlling optical paths across tiled displays and limiting moisture ingress into display-related sheets.

Collaborations

Joo’s listed coworkers include Junsoo Park and Inwha Lee. His work is associated with LG Display Co., Ltd.

Conclusion

Yoonhyung Joo’s two patents focus on optical path control and moisture-resistant display materials, highlighting his contributions to display technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
Loading…