# EDGAR Filing Document

**Accession Number:** 0000928876
**File Stem:** 0001178913-23-000818
**Filing Date:** 2023-3
**Character Count:** 8399
**Document Hash:** 13a7de41aba07df08306cd466199c8e8
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001178913-23-000818.hdr.sgml**: 20230302

**ACCESSION NUMBER**: 0001178913-23-000818

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20230302

**FILED AS OF DATE**: 20230302

**DATE AS OF CHANGE**: 20230302

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TOWER SEMICONDUCTOR LTD
- **CENTRAL INDEX KEY:** 0000928876
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** L3
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-24790
- **FILM NUMBER:** 23696256

**BUSINESS ADDRESS:**
- **STREET 1:** RAMAT GAVRIEL INDUSTRIAL PARK
- **STREET 2:** PO BOX 619
- **CITY:** MIGDAL HAEMEK
- **STATE:** L3
- **ZIP:** 23105
- **BUSINESS PHONE:** 97246506611

**MAIL ADDRESS:**
- **STREET 1:** RAMAT GAVRIEL INDUSTRIAL PARK
- **STREET 2:** PO BOX 619
- **CITY:** MIGDAL HAEMEK
- **STATE:** L3
- **ZIP:** 23105

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### FORM 6-K

### <br>

### SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

For the month March 2023 No. 1

### TOWER SEMICONDUCTOR LTD.
(Translation of registrant's name into English)

#### Ramat Gavriel Industrial Park

#### P.O. Box 619, Migdal Haemek, Israel 2310502
&nbsp;&nbsp;&nbsp;&nbsp;(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ☒&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Form 40-F ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No ☒

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#### On March 2, 2023, the Registrant Announced World's First Heterogeneous Integration

#### of Quantum Dot Lasers on its Popular SiPho Foundry Platform PH18

#### <br>

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#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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| | | |
|:---|:---|:---|
|  | **TOWER SEMICONDUCTOR LTD.** | **TOWER SEMICONDUCTOR LTD.** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Date: March 2, 2023 | By: | /s/ Nati Somekh |
|  |  | Name: Nati Somekh |
|  |  | Title: Corporate Secretary |

---

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![](image0.jpg)

#### Tower Semiconductor Announces World's First Heterogeneous Integration of Quantum Dot Lasers on its Popular SiPho Foundry

#### Platform PH18

#### Integrates a GaAs QD laser on Tower's versatile high-volume SiPho Foundry platform
**MIGDAL HAEMEK, Israel – March 2, 2023** – <u>Tower Semiconductor</u> (NASDAQ/TASE: TSEM), the leading foundry of high-value analog semiconductor solutions, in collaboration with <u>Quintessent, Inc</u>*,* today announced the world's first heterogeneous integration of GaAs quantum dot (QD) lasers and a foundry silicon photonics platform (PH18DB). This PH18DB platform is targeted for optical transceiver modules in datacenters and telecom networks, as well as new emerging applications in artificial intelligence (AI), machine learning, LiDAR and other sensors. According to the market research firm LightCounting, the silicon photonics transceiver market is expected to grow at a CAGR of 24% reaching a TAM of $9B in 2025.

The new PH18DB platform offers GaAs based quantum dot lasers and semiconductor optical amplifier (SOA) built on Tower's high-volume base PH18M silicon photonics foundry technology, that includes low loss waveguides, photodetectors, and modulators heterogeneously integrated on a single silicon chip. This platform will enable dense photonic integrated circuits (PICs) that can support higher-channel count in small form factor. Open foundry availability of this 220nm SOI platform will provide access to a broad array of product development teams, to simplify their PIC design through use of laser and SOA pcells, in addition to the feature rich baseline PH18 process.

Initial process design kits (PDK) for PH18DB have been made available in partnership with DARPA under the Lasers for Universal Microscale Optical Systems (LUMOS) program, which aims to bring high-performance lasers to advanced photonics platforms for commercial and defense applications, and MPWs are planned for 2023 and 2024.

This PH18DB platform complements Tower's previously announced, and now prototyping, PH18DA platform that offers heterogeneously integrated InP lasers, modulators and detectors.

These two heterogeneously integrated SiPho foundry platforms offer a rich set of devices and options to designers across the broad spectrum of leading edge applications. Tower continues to offer its silicon-only PH18MA platform, now in high volume production, for applications that do not require heterogeneous integration of III-V active elements.

Tower will be presenting its broad Optical technology offerings at the upcoming Optical Fiber Conference (OFC), March 7-9, 2023, in the San Diego Convention Center, CA. To learn more about the new technology announced and other manufacturing solutions, visit Tower's engineering team at the Company's booth #5317. For more details about the conference and presentation schedule, visit <u>here</u>.

*For additional information on the PDK and MPW shuttle schedules for PH18DB, PH18DA and PH18M platforms, please visit* <u>here</u>*.*

*For additional information about Tower's silicon photonics platform, please visit* <u>here.</u>

*This work was funded, in part, by the U.S. Government under the DARPA LUMOS program. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the U.S. Government.*

#### About Tower Semiconductor
Tower Semiconductor Ltd. (NASDAQ: TSEM, TASE: TSEM), the leading foundry of high value analog semiconductor solutions, provides technology and manufacturing platforms for integrated circuits (ICs) in growing markets such as consumer, industrial, automotive, mobile, infrastructure, medical and aerospace and defense. Tower Semiconductor focuses on creating positive and sustainable impact on the world through long term partnerships and its advanced and innovative analog technology offering, comprised of a broad range of customizable process platforms such as SiGe, BiCMOS, mixed-signal/CMOS, RF CMOS, CMOS image sensor, non-imaging sensors, integrated power management (BCD and 700V), and MEMS. Tower Semiconductor also provides world-class design enablement for a quick and accurate design cycle as well as process transfer services including development, transfer, and optimization, to IDMs and fabless companies. To provide multi-fab sourcing and extended capacity for its customers, Tower Semiconductor owns two manufacturing facilities in Israel (150mm and 200mm), two in the U.S. (200mm), two facilities in Japan (200mm and 300mm) which it owns through its 51% holdings in TPSCo and is sharing a 300mm manufacturing facility being established in Italy with ST. For more information, please visit: <u>www.towersemi.com</u>.

#### Safe Harbor Regarding Forward-Looking Statements
This press release includes forward-looking statements, which are subject to risks and uncertainties. Actual results may vary from those projected or implied by such forward-looking statements. A complete discussion of risks and uncertainties that may affect the accuracy of forward-looking statements included in this press release or which may otherwise affect Tower's business is included under the heading "Risk Factors" in Tower's most recent filings on Forms 20-F, F-3, F-4 and 6-K, as were filed with the Securities and Exchange Commission (the "SEC") and the Israel Securities Authority. Tower does not intend to update, and expressly disclaim any obligation to update, the information contained in this release.

###

**Tower Semiconductor Company Contact:** Orit Shahar \| +972-74-7377440 \| <u>oritsha@towersemi.com</u>

**Tower Semiconductor Investor Relations Contact:** Noit Levy \| +972-4-604-7066 \| <u>noitle@towersemi.com</u>

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<u> </u>