Tokyo, Japan - Sony Corporation ("Sony") is announcing the commercialization of a new 2.45 effective megapixel CMOS image sensor for automotive cameras, the IMX390CQV type 1/2.7. This technology is useful not just for image sensors, but also as a 3D-stacking technology for LSI in general. It also offers high-sensitivity performance capable of producing high-quality color images even in light conditions as low as 0.1 lux, which is equivalent to moonlight. This image sensor simultaneously uses both the LED flicker mitigation and HDR functions to deal with these types of situations, providing more precise recognition in the diverse real-world traffic environments that drivers encounter. and is now putting efforts into a Sony CMOS Image Sensor that can do exactly that. This makes it possible to minimize the depth and the diameter of the contacts, shrinking them to about one five hundredth of their original size. Sample comparison movies: Simultaneous LED flicker mitigation and HDR functions (Left), HDR function only (Right). ──Please tell us a little about intelligent vision sensors. It is fair to say that developing the back-illuminated structure, which enables high image quality, accelerated the transition to CMOS image sensors. After we finally overcame these difficulties thanks to the hard work of the process development team, our project drew a lot of attention within the company and started progressing more smoothly toward commercialization. They allow for image sensors with complicated and comparatively large-sized circuits, allowing for simultaneous HDR and LFM functionalities. left: Front-illuminated structure / right: Back-illuminated structure. ──What is epoch-making about the development of the back-illuminated CMOS image sensors? Dept. In the back-illuminated structure, the pixel chip on the upper layer is thinned to be about 10 μm thick, a fifth of the usual thickness, following the wafer-on-wafer bonding process. 2Sony Semiconductor Solutions Corporation, ──Please tell us a little about Cu-Cu directing bonding. It is used in digital still cameras, interchangeable-lens digital cameras, and smartphones. Yasu: Sony Depthsensing Solutions had been engaged in iToF R&D for many years and had a great deal of expertise. Furthermore, our products meet the requirements of the AEC-Q100 automotive electronic component reliability tests. Yoshihisa Kagawa: This technology adds Cu-connection pads to the lower circuit chip and upper pixel chip of stacked CMOS image sensors to simultaneously establish physical and electrical connections. Realizing the future full of emotion with the next generation of creators. Using the evidence gathered during development, the validity of the process is demonstrated with the aim of establishing a firm position as a reliable supplier in the industry while being assessed and audited by customers. At first, we did not understand anything about the differences when compared with electronics products and the unique culture of the automotive industry, but we learned by reading standards and attending seminars, all the while striving to improve. 3, Research Div. Even in situations of dramatic lighting changes, such as when entering or exiting tunnels, they can capture high-quality images and flickering LED displays at the same time. technology. Sony's new image sensor has addressed this issue by making the exposure time longer than the LED flicker frequency, thereby minimizing the likelihood of flicker. ── Please tell us a little about back-illuminated CMOS image sensors. Although a transition from CCD to CMOS image sensors was occurring for certain applications, the image quality of front-illuminated CMOS image sensors had room for improvement, and the transition itself brought up a number of issues. Realizing the future full of emotion with the next generation of creators. In recent traffic environments, LEDs are often used for traffic signs and signals as well as automobile headlights and taillights. The IMX390CQV is planned to meet the requirements of the AEC-Q100 Grade 2 automotive electronic component reliability tests this fiscal year. It was a difficult journey, but Sony became the first in the world to achieve mass production. Sorry, your blog cannot share posts by email. left: Conventional Back-illuminated CMOS image sensor / right: Newly-developed Stacked CMOS image sensor. Eki: The biggest reason is that Sony already had the foundations of the development in place when we started planning. Kagawa: With conventional stacking technology, TSVs (Through-Silicon Via), electrodes that vertically penetrate the semiconductor chip are used. Create new values through the power of design. The back-illuminated structure matches the stacking structure well and is capable of adapting to technological advancements. 2.45 megapixels, MIPI CSI-2 serial output (4 lane / 2 lane), Sony Commercializes the Industry's First High-Sensitivity CMOS Image Sensor for Automotive Cameras, Delivering Simultaneous LED Flicker Mitigation and High-Quality HDR Shooting, Planned to meet the AEC-Q100 Grade 2 automotive electronic component reliability requirements this fiscal year, Development process complies with ISO26262 automobile functional safety standards, resulting in a high level of design quality, Sensor meets ASIL C functional safety requirements. As such, the finer the pixels, the greater the reduction in sensitivity due to wiring blocking the light from reaching the photodiode substrate. Instead of a conventional silicon (Si) based photodiode, a compound semiconductor indium gallium arsenide (InGaAs) based photodiode captures long wavelength light. Sony is advancing more development of the small and high-performance image sensor : the high sensitivity back-illuminated CMOS image sensor and the stacked CMOS image sensor. This delivers the highest sensitivity, approximately 1.5x that of conventional*3 image sensors for 2.0 megapixel class automotive cameras (according to Sony research). This means that automotive cameras must be able to capture these elements accurately. Introducing the technologies behind Sony’s latest image sensors. Sony's newly developed IMX415 stacked CMOS image sensor employs proprietary high-sensitivity, low-noise technology to miniaturize the pixel size to 1.45 square μm, which is approximately 80% smaller than conventional. Sony claims that Exmor R is approximately twice as sensitive as a normal front illuminated sensor. CV System Development Dept.Mobile & Sensing Systems Business Div.Sony Semiconductor Solutions Corporation.