Samsung introduces its first ISOCELL image sensor designed for automotive applications – Samsung Global Newsroom

ISOCELL Auto 4AC is a viewing camera sensor for surround view monitors or
reversing cameras in HD resolution

The sensor’s CornerPixel™ solution enables an improved field of vision for safer driving

Samsung Electronics, a global leader in advanced semiconductor technology, today introduced ISOCELL Auto 4AC, an automotive image sensor that delivers advanced 120 decibel (dB) high dynamic range (HDR) and noise attenuation. LED flicker (LFM) especially for Surround View Monitor (SVM) or Rear View Camera (RVC) in high definition (1280 x 960) resolution. The new sensor is Samsung’s first imaging solution optimized for automotive applications.

“The new ISOCELL Auto 4AC combines Samsung’s proven and innovative image sensor technologies with a unique CornerPixel™ solution for advanced HDR and LFM capabilities, delivering exceptional viewing experiences in any lighting condition,” said said Duckhyun Chang, executive vice president of the sensor business at Samsung Electronics. “Starting with the ISOCELL Auto 4AC, we plan to expand our range of automotive sensors into areas such as camera monitoring systems (CMS), autonomous driving and in-cab monitoring.”

Various lighting situations on the road can create obstacles for the driver. Rapid transitions from a dimly lit environment to a brighter one, such as exiting a tunnel, can take a few seconds for the driver’s eyes to adjust. Additionally, the flickering of LED headlights or traffic signs, such as streetlights and traffic lights, may become increasingly noticeable on the car system’s camera screen.

The ISOCELL Auto 4AC offers a safer driving experience with an improved field of vision for the driver thanks to its CornerPixel™ technology. The technology features a specialized pixel structure that attenuates LED light at 90 hertz (Hz). In a single pixel area, it integrates two photodiodes, a 3.0 µm pixel for viewing low-light images and a 1.0 µm pixel placed at the corner of the large pixel for brighter environments. With two photodiodes capturing images in different exposures simultaneously, the sensor delivers up to 120dB HDR with minimal motion blur, enabling smoother transitions between dark and bright areas while preserving more detail on the road ahead.

To minimize LED flicker, the exposure time of the smaller photodiode can be extended, preventing the pulsed LED light from displaying as flicker on the camera screen. This provides a more enjoyable viewing experience for the driver and more accurate image data of LED-embedded objects for the car system to recognize.

The Samsung ISOCELL Auto 4AC is available in a 1/3.7-inch optical format with 1.2 million 3.0 micrometer (µm) pixels, and for streamlined client system installations, an image signal processor (ISP) is integrated in the sensor.

The 4AC meets stringent AEC-Q100 Grade 2 qualifications, including an operating temperature range of -40°C to 125°C, and is currently in mass production.

*Editor’s Note: Actual performance may vary depending on device and user environment.

* Samsung first announced its ISOCELL technology in 2013, which reduces color crosstalk between pixels by placing a physical barrier, allowing smaller pixels to achieve higher color fidelity. Based on this technology, Samsung introduced the industry’s first 1.0um pixel image sensor in 2015 and a 0.9 pixel sensor in 2017. Samsung continues to improve its methods of noise isolation. pixels with ISOCELL Plus and ISOCELL 2.0 technologies.

Michael C. Garrison