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For the Inventor, By the Inventor

Toyoshina, Japan

Eiji Muramatsu

This inventor holds 18 USPTO granted patents, primarily in Liquid Crystal Displays. Top assignee: Seiko Epson Corporation. Active years: 1993-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Muramatsu. Retrieved from https://idiyas.com/inventor/eiji-muramatsu-egd9pi7u

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

Calculating rank
USPTO Granted Patents = 18

% Patents Active = 94.4

Average Co-Inventor Count = 1.4

ph-index = 11

Forward Citations = 315(Granted Patents)


Location History:

  • Nagano-ken, JP (1999)
  • Toyoshino-machi, JP (2001)
  • Toyoshima-machi, JP (2001)
  • Toyashina-machi, JP (2003)
  • Nagano, JP (2001 - 2004)
  • Toyoshina-machi, JP (2000 - 2005)
  • Suwa, JP (1993 - 2006)

Company Filing History:

goldMedal18 out of 34,305 
 
Seiko Epson Corporation
 patents

Years Active: 1993-2006

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Areas of Expertise:
Liquid Crystal Display
Electro-Optical Device
Circuit Board
Manufacturing Method
Electronic Equipment
Light-Shielding Portion
Resin Coating
Mounting Structure
Semiconductor Devices
Multi-Layer Substrate
Visual Confirmation
Electronic Parts Module
18 patents (USPTO):Explore Patents
1. 7126655 - Liquid crystal display device and electronic device using the same (2006-10-24),
2. 6954249 - Liquid crystal display device, method of manufacturing the same, and electronic equipment (2005-10-11),
3. 6819376 - Liquid crystal display device with a light-shielding portion (2004-11-16),
4. 6675470 - Method for manufacturing an electro-optical device (2004-01-13),
5. 6646708 - Electrooptic device, manufacturing method therefor with visual confirmation of compression bonding to terminals and electronic apparatus (2003-11-11),
6. 6542374 - Circuit board, method for manufacturing the circuit board, and display device and electronic equipment employing the circuit board (2003-04-01),
7. 6309902 - Method for coating semiconductor element with resin, coating resin, and liquid crystal display device (2001-10-30),
8. 6303874 - Electronic parts module and electronic equipment (2001-10-16),
9. 6222597 - Liquid crystal device and electronic apparatus therewith (2001-04-24),
10. 6191838 - Circuit board connecting structure, electro-optical device, electronic apparatus provided with the same, and manufacturing method for electro-optical device (2001-02-20),
11. 6151091 - Liquid crystal display device including film (2000-11-21),
12. 6128063 - Liquid crystal display apparatus having multi-layer substrate (2000-10-03),
13. 5986342 - Liquid crystal display apparatus structure for mounting semiconductor (1999-11-16),
14. 5893623 - Structure and method for mounting semiconductor devices, and liquid (1999-04-13),
15. 5737272 - Liquid crystal display apparatus, structure for mounting semiconductor (1998-04-07),

Title: Eiji Muramatsu: Innovator in Liquid Crystal Display Technology

Introduction

Eiji Muramatsu is a prominent inventor based in Toyoshina-machi, Japan. He has made significant contributions to the field of liquid crystal display (LCD) technology, holding a total of 18 patents. His innovative work has paved the way for advancements in electronic devices that utilize LCDs.

Latest Patents

Among his latest patents, Muramatsu has developed a liquid crystal display device and an electronic device that utilizes this technology. The first patent describes a liquid-crystal display device featuring a pair of substrates that are opposite to each other, along with a semiconductor element directly joined to one of the substrates. A light-shielding member covers portions of the semiconductor element, preventing erroneous operation by completely shielding light from the upper and side surfaces.

Another notable patent involves a method of manufacturing a liquid crystal display device that displays visible images by controlling the alignment of liquid crystals between two transparent substrates. This innovation includes a resistance element formed directly on the transparent substrate, which allows for voltage adjustments imposed on the liquid crystal. The design reduces the overall size of the liquid crystal display device by integrating the resistance element and peripheral circuits onto the substrate.

Career Highlights

Eiji Muramatsu is currently employed at Seiko Epson Corporation, where he continues to innovate in the field of display technology. His work has been instrumental in enhancing the functionality and efficiency of electronic devices that rely on liquid crystal displays.

Collaborations

Throughout his career, Muramatsu has collaborated with notable colleagues, including Masaru Kamimura and Shigetoshi Yamada. These partnerships have contributed to the development of cutting-edge technologies in the display sector.

Conclusion

Eiji Muramatsu's contributions to liquid crystal display technology have significantly impacted the electronics industry. His innovative patents and ongoing work at Seiko Epson Corporation highlight his role as a leading inventor in this field.

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]
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