# 유원엘디에스(주) — Yoowon LDS Co., Ltd.

> Korean manufacturer (est. 2006) of automotive ECU End-of-Line (EOL) testers, inline CPU/EEPROM writers, automotive headlamp photometric/distribution testers, LED module inspection equipment, and precision measurement instruments (SMU, multi-channel meters, Sub Units). Tier-1 supplier to Hyundai · KIA, with deliveries to global OEMs including Genesis, K5, Sorento, Kona, Audi A3, and Ford. ISO 9001 and ISO 14001 certified. Holds 6 registered Korean patents (2006–2022) in LED module inspection, aging inverters, and integrated LED testing.

## Company facts

- **Name (KR):** 유원엘디에스(주)
- **Name (EN):** Yoowon LDS Co., Ltd.
- **Founded:** 2006
- **CEO:** 유 정 구 (Jeong-Gu Yoo)
- **Business reg. no.:** 130-86-88126
- **Address:** 경기도 부천시 오정구 석천로 397, 부천 테크노파크 쌍용3차 302동 306호 (ZIP 14441)
- **Phone:** +82-32-229-4990 (general / sales / tech)
- **HR phone:** +82-70-4708-2343
- **Fax:** +82-32-624-4994
- **Email:** info@yoowonlds.com
- **Hours:** Weekdays 09:00–18:00 KST
- **Certifications:** ISO 9001 (Quality), ISO 14001 (Environmental)
- **Languages:** Korean / English / Japanese / Chinese (full 4-language site)

## Product catalog

### 1. Automotive 검사기 (Automotive Tester) — `/kr/p/products-ecu-eol`

Automotive ECU End-of-Line testers (8 models) + inline CPU/EEPROM Program Writers + headlamp photometric & light-distribution testers + Ford room lamp tester.

- RG3 LDM EOL Tester — Genesis G80
- RG3PE LDM EOL Tester — Genesis G80 3rd gen (HSM Lock)
- MQ4-PE LDM EOL Tester — KIA Sorento (2-cavity)
- DL3 LDM EOL Tester — KIA K5
- SX2 LDM EOL Tester — KIA Kona
- AU38X-PA EOL Tester — Audi A3 interior light panel
- JG CDM Tester — EV charge indicator / door latch
- Adapter FCT Tester — EV charging temperature protection (NACS/CCS1)
- Inline LDM Program Writer (Genesis G80 1st gen) — CPU + EEPROM writer
- Inline LDM Program Writer (Genesis G80 3rd gen) — HSM Lock
- 자동차 헤드램프 광특성 검사기 (Headlamp Photometric Inline) — μA/A range, SMU 48ch
- 포드 룸램프 (Ford Pickup Room Lamp Tester) — 4-cavity semi-inline
- 배광 검사기 (Light Distribution Tester) — Two-cavity, 4 HD cameras

### 2. LED 모듈 검사기 (LED Module Tester) — `/kr/p/products-led-module`

Precision optical and electrical inspection for LED modules (μA to A range).

- LED 모듈 DIV 검사기 — Samsung BLU / lighting modules (individual LED brightness + solder defect)
- 조도 검사기 (Illuminance Tester) — up to 1.2m modules
- LED 모듈 (High-temp inline tester) — Reflow soldering aftercare
- LED 조명 비전 검사기 — SMU constant-current vision
- LED 조명 AC 특성 검사기 — AC voltage/current/THD/power factor
- LED 조명 광특성 검사기 (C-7000) — AC/DC photometric

### 3. 기타 측정 장비 (Measuring Instruments) — `/kr/p/products-measuring`

SMU, multi-channel meters, and Sub Units for SMU channel expansion.

- LDM-XX60 SMU — Source Measuring Unit (24ch, 60V, 2A, bidirectional, μA to A)
- 다채널 전류 측정기 (MCS-XXx3) — 10–60 channels, 10–2,000 mADC
- 다채널 전압 측정기 (MVS-XXx2) — 10–60 channels, 0–60 VDC
- 채널 분배기 (CDS-096-16) — Sub Unit: SMU 16ch → 96ch expansion
- 96채널 선택기 (CS-096x) — Sub Unit: 96ch routing
- 극성 변환기 (PC-24X02K) — Sub Unit: 24ch polarity conversion

## Patents (6 registered, KIPO)

1. Integrated LED Module Inspection Apparatus — reg. **10-2350618** (2022), app. 10-2021-0070234
2. LED Module Inspection Method and Apparatus — reg. **10-1865363** (2018), app. 10-2016-0054846
3. Defect Inspection Method and Apparatus for LED Devices and Modules — reg. **10-1489948** (2015), app. 10-2014-0076558
4. Beam-Angle Adjustable LED Streetlight — reg. **10-1050242** (2011), app. 10-2011-0010929
5. LED Module Error Detection Apparatus — reg. **10-0866346** (2008), app. 10-2008-0072696
6. Aging Inverter for CCFL/EEFL Fluorescent Lamps — reg. **10-0660169** (2006), app. 10-2006-0101179

## Major customers

- **Automotive (Tier-1 to Hyundai/KIA):** Hyundai Mobis, KIA, Genesis (G80), Audi (A3), Ford (pickup)
- **BLU / Display:** Samsung Electronics, LG Electronics, Samsung Electro-Mechanics, LG Innotek, Seoul Semiconductor
- **Lighting module makers:** SL, Lumens, LED Lytec, Hangil Electronics, Daeyoung Electric, Kumho HT

500+ production lines delivered since 2006, 20+ years of in-house design, manufacturing, validation, and delivery.

## Site map

- Home: https://www.yoowonlds.com/kr/
- About / CEO Message: /kr/p/about
- Company History: /kr/p/history
- Certifications & Patents: /kr/p/certifications
- Location & Directions: /kr/p/location
- Products overview: /kr/p/products
- Automotive Tester: /kr/p/products-ecu-eol
- LED Module Tester: /kr/p/products-led-module
- Measuring Instruments: /kr/p/products-measuring
- News: /kr/board/news/
- Delivery References: /kr/board/references/
- Careers: /kr/board/recruit/
- Awards & Records: /kr/board/awards/
- PDF Catalog: /kr/board/download/
- **Request a Quote (form):** /kr/p/quote
- Contact: /kr/p/contact

All pages available in 4 languages: `/kr/`, `/en/`, `/jp/`, `/cn/`.

## Inquiries

Engineering team responds within 24 business hours. Submit at `/kr/p/quote` with product of interest, company name, contact, email, message, and optional file attachments (up to 5). Submissions are also emailed to info@yoowonlds.com.