Wintest

What Wintest does

Wintest Corp. (ウインテスト株式会社) is a Japan-based, publicly-listed (TSE Standard, ticker 6721) manufacturer of automatic test equipment (ATE) for semiconductor devices, founded in 1993 and headquartered in Yokohama with 51-100 employees. The company's core product lines are ATE systems for display driver ICs (LCD, OLED, PDP), image sensors (CCD/CMOS), and analog/mixed-signal logic ICs, organized under the WTS series (WTS-577, WTS-577SR, WTS-9000, WTS-311/NX, WTS-377, WTS-750/800, WTS-677, WTS-3000, WTS-511, WTS-588D). Differentiated technical capabilities include industry-first asynchronous measurement technology (patented), 1.6Gbps air-cooled LCD driver I/O with 4.5Gbps super-speed driver support, and up to 384 million pixel-per-channel image data capture. The company also offers burn-in systems (300+ units shipped, 100,000+ burn-in boards shipped over 40 years), Flash ROM writing services (3 million units/month capacity), device analysis and evaluation services, and is diversifying into X-ray CT inspection (WTS-CT130, RingCT, SlantCT), liquid lens products (RYUGU), healthcare IoT (BodyBeat), and lifting-assist MGC technology.

Wintest's business model is dominated by one-time equipment sales to enterprise fabs, with equipment prices ranging from thousands to over ¥100 million per system and sales cycles of 6-12 months. It operates direct sales in Japan (Yokohama HQ) and China (Wuhan subsidiary, established January 2020), supplemented by channel partners in Taiwan (Probeleader/Viccom, Spirox in Hsinchu). The customer base is concentrated among approximately 20 major Japanese semiconductor/image sensor manufacturers plus major LCD driver manufacturers in China and Taiwan, with named enterprise logos including Canon, Olympus, Sanken, and Seiko Epson. A capital alliance with Wuhan Jingce Electronic Group (37.28% shareholder as of December 2025) provides strategic access to Chinese display manufacturers. Reported revenue was ¥429 million JPY in FY2025 (up modestly from ¥417 million in FY2024), with operating losses in recent fiscal years. Beyond core ATE, the company has expanded into adjacent diversified businesses including solar power O&M (O-RANGE subsidiary, acquired 2017), speaker distribution (Amphion), and multiple new business ventures with university and corporate partners.

Name

Wintest

Legal name

ウインテスト株式会社

Website

https://wintest.co.jp

Company type

Public

Founded year

1993

Operating status

Operating

Headcount range

51–100 employees

Short description

Wintest Corp. (ウインテスト株式会社) is a Japanese semiconductor automatic test equipment (ATE) manufacturer, founded in 1993, specializing in display driver IC, image sensor, and mixed-signal IC inspection systems sold to enterprise fabs in Japan, China, and Taiwan.

Ownership category

akta.pro rank

Product category

Semiconductor Test Equipment

NAICS

Semiconductor Machinery Manufacturing (333242), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Services-Testing Laboratories (8734)

akta.pro primary industry

Test, Probe & Burn-In Equipment (Wafer Sort/Final Test) (HDAHAEAJ)

Keywords

• Semiconductor test equipment
• Automatic test equipment
• LCD driver IC testing
• Image sensor inspection
• Burn-in testing systems

Headquarters

HQ city

Yokohama

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Semiconductor Inspection Equipment Sales: Design, development, manufacturing and sale of automatic inspection/test equipment (WTS series testers) for semiconductor devices including LCD driver ICs, image sensors, OLED displays, and logic ICs. Equipment prices range from thousands to 100 million yen per system. Revenue recognized upon delivery and acceptance by customers, with sales cycles of 6 months to 1 year.
2. ROM Writing Services: Provides Flash ROM writing services with monthly processing capacity of 3 million units. Services include writing, quality verification, reliability evaluation, burn-in services, and equipment rental. Processing for customers from small to large volumes with short delivery times.
3. Burn-in Equipment Sales and Services: Design, manufacture, and sale of burn-in systems including contact monitor burn-in, monitor burn-in BI-M Series, dynamic burn-in BI-D Series, test burn-in BI-T Series, and custom systems. Also provides burn-in board design and manufacturing with 100,000+ boards shipped. Maintains over 40 years of experience with 300+ units shipped.
4. Device Analysis and Evaluation Services: Provides device evaluation, failure analysis, and screening services using proprietary test systems, burn-in chambers (temperature range -70°C to 180°C), high-speed LSI testers, and various measurement equipment including 40G sampling oscilloscopes and spectrum analyzers.
5. New Business Ventures: Diversification into new business areas including: MGC (Self-weight Compensation Mechanism) technology for material handling, liquid lens products (RYUGU), 3D X-ray inspection equipment (WTS-CT130), healthcare IoT devices (BodyBeat), and alkaline hydrogen ion cleaning water systems.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels4 records

Core offering

Wintest designs, develops, manufactures, and sells automatic test equipment (ATE) and related inspection systems for semiconductor devices, including LCD/OLED driver ICs, CCD/CMOS image sensors, and analog/mixed-signal logic ICs. The company also provides burn-in systems, Flash ROM writing services with 3 million units/month capacity, and device analysis/evaluation services. Its products are sold primarily to semiconductor and display panel manufacturers in Japan, China, and Taiwan through direct enterprise sales and channel partners.

Product overview

Wintest Corporation is a semiconductor inspection equipment manufacturer offering a comprehensive portfolio of automatic test equipment (ATE) systems for display driver ICs, image sensors, and mixed-signal ICs. The product lineup is organized into distinct categories: LCD/OLED Driver IC Test Systems (WTS-577, WTS-577SR, WTS-9000, WTS-588D), CMOS Image Sensor Test Systems (WTS-311, WTS-311NX, WTS-377, WTS-3000), Analog/Mixed-Signal IC Test Systems (WTS-750/800, WTS-89), Wafer Acceptance Test Systems (WTS-511), X-ray Non-Destructive Inspection Systems (WTS-CT130, RingCT, SlantCT), and accessory products including the WTS-YLFT01 HIFIX interface unit and Liquid Lens RYUGU. The company also offers burn-in systems, ROM writing services, and device analysis/evaluation services. Key differentiators include industry-first async measurement technology (patented), high-speed data processing up to 11Gbps transfer rates, and compact system designs optimized for both low-volume/high-mix and mass production environments. Two discontinued products (WVM-701, WTS-103C) remain in the portfolio for legacy support.

Differentiator

Problem solved

Functional benefit

Brands

• RYUGU: Liquid lens product line for inspection applications
• BodyBeat
• CozyRide

Products and services

• WTS-588D Tester Test Head All-in-one ATE test system in a single box format with integrated workstation. Compact and portable with casters, ideal for lab development, silicon verification and evaluation, and engineering sample quality testing. Features 6 board slots supporting various WTS-588 boards for high-density pin configurations exceeding 1000 pins, software-compatible with WTS-9000 for mass production.
• WTS-9000 High-end LCD/OLED Driver IC Tester High-end LCD/OLED high-speed driver IC inspection system featuring 1.6Gbps I/O signal drive speed with up to 1024 pins, 3584 digitizer pins for grayscale data capture, and max 32 concurrent IC measurements. Equipped with 4.5Gbps super-speed driver for TV display driver IC testing with user-friendly GUI for production system operation.
• WTS-750/800 Analog/Mixed Signal IC Tester Analog and Mixed Signal IC test system for automotive IC and power IC markets. Supports testing from Li-ion power control devices to high-voltage (2000V), high-current (500A) devices, or from analog IC to digital IC. Features up to 4 test stations with patented async measurement function for parallel testing of 2, 4, or 8 different devices.
• WTS-89 Compact Analog/Mixed Signal IC Tester Compact analog and mixed signal IC test system designed for power devices used in green technology and electric vehicles. Based on WTS-700 platform with support for high-voltage (2000V) and high-current (500A) testing capabilities.
• WTS-311 OLED/LCD/LCOS/CCD/CIS Array Wafer Inspection System Full-spec OLED/LCD/LCOS/CCD/CIS array wafer inspection system. Supports OLED, low/high temperature polysilicon, amorphous TFT array, LCOS, CCD, and CMOS image sensors. Features DC to 80MHz drive frequency, -10.24V to +20.47V drive voltage, and up to 8 channels with 380M pixel data per channel processing capability.
• WTS-311NX High-end CCD/CMOS Image Sensor Inspection High-end CCD/CMOS image sensor wafer final inspection system based on WTS-311 with enhanced logic test functions, high-frequency pixel data capture, parallel testing for up to 4 devices, and advanced image processing. Features 200MHz digital I/O with up to 256 pins, and 384M pixel per channel data capture.
• WTS-377 Digital Output CMOS Image Sensor Tester Digital output CMOS image sensor wafer final inspection system designed with latest architecture for low-cost, high-performance testing of digital cameras, cell phones, and automotive CMOS image sensors. Supports parallel testing of 16-32 devices with 200MHz digital I/O up to 1024 pins.
• WTS-677 Standard Logic IC Test System Standard logic IC test system with optimized tester-in-test-head architecture for high speed, space saving, and energy efficiency at low cost. Also supports linear device IC testing with optional digitizer. Features 200MHz digital I/O with 512 pins and concurrent test capability of 1/2/4/8/16/32 devices.
• WTS-577 LCD/PDP/OLED Driver IC Test System LCD/PDP/OLED driver IC test system optimized for FPD (Flat Panel Display) driver IC testing. Features high speed, compact design, and low power consumption (max 3KVA). Supports LCD, PDP driver ICs, and current-output OLED driver ICs with up to 32 parallel device testing.
• WTS-577SR LCD/OLED High-speed Driver IC Tester LCD/OLED high-speed driver IC test system with significantly improved data processing and transfer speeds. Achieves maximum drive frequency of 2Gbps and maximum data transfer rate of 11Gbps. Supports MIPI, mini-LVDS, and P2P interfaces for 5G and smartphone display driver IC testing. Features 512 I/O channels and 2304 LCD channels.
• WTS-511 Wafer Acceptance Test System Wafer Acceptance Test (WAT) system with high-speed parallel architecture and flexible per-channel resources. Enables direct charge measurement across all channels as alternative to LCR-based capacitance measurement technology. Suitable for high-density scribe array test structures and individual single-pad DUTs.
• WTS-3000 Logic IC Test System Logic IC test system with tester-in-test-head architecture using air cooling (no water cooling). Maintains high speed performance while being energy-efficient. Supports logic IC inspection and linear device IC inspection with optional digitizer. Accommodates both wafer-level and chip/handler inspection with standard interfaces. Compact design: 70(H)x60(W)x40(D)cm, 55kg weight.
• WTS-CT130 Micro CT X-ray 3D Tomography Inspection System Micro CT X-ray 3D tomography inspection system. Compact, high-speed, high-resolution (10μm) X-ray CT system that rotates objects 360 degrees for accurate 3D tomography. Features 130kV high X-ray energy, 49.8μm high-precision CMOS flat panel detector, and intuitive user interface. Uses complete lead shielding (sealed type) with X-ray leakage under 1μSv, eliminating need for protective clothing.
• WTS-RG150 RingCT X-ray Inspection System Ring CT X-ray inspection system for factory line inspection. X-ray source and high-precision CMOS flat panel detector rotate inside ring frame. Belt conveyor placed at center for line inspection. Features 3-second dual corner imaging, 1.5-second real-time reconstruction and inspection, 150kV or 180kV sealed tube options, and free-scan mode with arbitrary angles.
• WTS-DG130 SlantCT X-ray Inspection System Slant CT X-ray inspection system that irradiates X-rays at oblique angles to capture contact surface and internal structure images. Collects projection images through 360° circular motion for 3D reconstruction. Features 130kV high X-ray energy, 49.8μm high-precision CMOS detector, 3D image acquisition in under 4 seconds, and 6μm resolution.
• Liquid Lens RYUGU Liquid lens product that changes lens curvature by varying voltage to control liquid surface tension. Interface changes continuously from concave to flat to convex lens, enabling high-speed focusing. Product lineup includes 5 liquid lens modules and 7 tricentric liquid lens modules. Features USB connection, millisecond focusing, >10mm focal depth, no mechanical displacement space required, <2mW power consumption, and operating temperature range of -30° to +60°.
• Burn-in Systems (BI-M, BI-D, BI-T Series) Burn-in systems for semiconductor reliability screening, including contact monitor burn-in (BI-M Series), monitor burn-in (BI-D Series), test burn-in (BI-T Series), and custom systems. Also provides burn-in board design and manufacturing with 100,000+ boards shipped and 300+ units shipped globally.
• Flash ROM Writing Services Flash ROM writing services with monthly processing capacity of 3 million units. Services include writing, quality verification, reliability evaluation, burn-in services, and equipment rental. Processing for customers from small to large volumes with short delivery times.
• Device Analysis and Evaluation Services Provides device evaluation, failure analysis, and screening services using proprietary test systems, burn-in chambers (temperature range -70°C to 180°C), high-speed LSI testers, and various measurement equipment including 40G sampling oscilloscopes and spectrum analyzers.

Quantifiable outcome

• World's first achievement of 1.6Gbps LCD driver I/O capability with air-cooled system
• +4 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Nine partnerships are on record, tiered major, core, secondary, emerging and minor.

• Wuhan Jingce Electronic Group Co., Ltd. (武漢精測電子集団股份有限公司)majorStrategic or Co-development Partner · 1 July 2019Capital alliance partnership established July 2019 with Wuhan Jingce Electronic Group, a leading Chinese company in LCD/OLED panel signal generator design and manufacturing, AOI test systems, and automatic handlers. Jingce Group has 107 patents (4 development patents, 83 new patents, 20 appearance patents) and reported sales of 350 billion+ JPY in 2019. The partnership provides strategic access to the Chinese semiconductor and display manufacturing market.
• Probeleader and Viccom Inc.coreChannel Partner/ Reseller/ DistributorOverseas sales agency partnership in Taiwan for semiconductor inspection equipment sales and technical support. Located in Hsinchu City, Taiwan's primary semiconductor manufacturing hub. Provides sales representation and technical partnership for Taiwan market.
• Spirox CorporationsecondaryChannel Partner/ Reseller/ DistributorTaiwan-based sales representative for Wintest products in Taiwan market. Located in Hsinchu City, providing additional channel coverage for semiconductor inspection equipment sales.
• Keio University (慶応義塾大学) - Advanced Science and Technology CentercoreStrategic or Co-development PartnerJoint development partnership for MGC (Self-weight Compensation Mechanism) technology with Professor Morita's laboratory at Keio University's Advanced Science and Technology Center. Joint patent applications filed for self-weight compensation technology using spring elasticity. Development aims to create lifting assistance devices for trucks (tailgate/hydraulic lifts) and other material handling applications.
• Redox Technology Co., Ltd. (レドックステクノロジー社)emergingStrategic or Co-development PartnerPartnership for development and sales of alkaline hydrogen ion cleaning water systems. Wintest is collaborating with Redox Technology (based in Sapporo, Hokkaido) to commercialize electrolytic water generation technology with three-layer structure and Z-Tornado Technology patents.
• TAOS Laboratory Co., Ltd. (株式会社TAOS研究所)emergingStrategic or Co-development PartnerJoint development and sales partnership for healthcare management systems using pulse wave (BCG, ECG) technology. TAOS Laboratory provides core sensing technology while Wintest handles product development and sales integration with IoT and AI server analytics.
• WELL Group (大阪市生野区)emergingChannel Partner/ Reseller/ DistributorInitial sales partner for BodyBeat healthcare monitoring system (IoT healthcare product). WELL Group in Osaka's Ikuno-ku ward serves as initial distribution partner for the healthcare product line.
• TAM Network Co., Ltd. (株式会社) (東京都千代田区)emergingChannel Partner/ Reseller/ DistributorSales agent for alkaline hydrogen ion cleaning water generation systems in the initial rollout phase. TAM Network, based in Chiyoda-ku, Tokyo, serves as primary distributor for this new product line.
• Amphion Loudspeakers Ltd. (フィンランド)minorGTM or Marketing PartnerDistribution agreement for high-end speaker products. Wintest serves as exclusive Japan distributor for Amphion Loudspeakers products, representing Wintest's first B2C business challenge alongside solar power O&M subsidiary O-RANGE Co., Ltd.

Scale indicators8 records

Recent moves11 records

Expansion highlights7 records

Direct peers

• Tokyo Seimitsu (Accretech): Japanese manufacturer of semiconductor prober and inspection equipment. Overlaps with Wintest in wafer-level inspection and serves similar Japanese semiconductor fab customers.
• FormFactor: US-based probe card and test interface supplier. Comparable in semiconductor test workflow positioning, providing complementary probe technology used alongside Wintest testers.
• Toray Engineering: Japanese manufacturer specializing in semiconductor test handlers and inspection equipment, with comparable customer base in Japanese fabs and image sensor manufacturers.
• Chroma ATE Inc. Taiwan-based semiconductor and display test equipment manufacturer. Direct comparable to Wintest in LCD driver IC, image sensor, and mixed-signal test markets, particularly serving Taiwanese and Chinese customers.

Emerging players

• Hangzhou Changchuan Technology (长川科技): Chinese semiconductor test equipment and handler manufacturer. Competes with Wintest for Chinese analog/mixed-signal and logic IC test sockets, benefiting from domestic substitution tailwinds in China.
• Beijing Huafeng Test & Control Technology (华峰测控): Chinese ATE specialist focused on analog and mixed-signal IC test. Comparable niche overlap with Wintest's WTS-750/800 platform, particularly in Chinese power management and automotive IC markets.

Broad incumbents

• Cohu: US-based ATE and test handler manufacturer with strength in analog/mixed-signal and automotive-grade test — overlapping with Wintest's WTS-750/800 and burn-in offerings.
• Lasertec: Japanese semiconductor inspection equipment leader specializing in mask and wafer inspection. Adjacent competitor serving similar semiconductor fab customers with complementary inspection technology.
• Teradyne: US-based semiconductor ATE incumbent competing with Wintest in analog/mixed-signal and logic IC test. Much larger scale with broader product lines including memory and system-level test.
• Advantest: Japan-based global leader in semiconductor automatic test equipment. Directly competes with Wintest in LCD/OLED driver IC, image sensor, and mixed-signal test segments, but with a vastly broader portfolio spanning memory, logic, and SoC test.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/wintest-corporation

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Wintest