ROHM develops RGB SMD LEDs for automotive interiors to reduce chromatic aberration caused by color mixing

06/02/2023

ROHM develops RGB SMD LEDs for automotive interiors to reduce chromatic aberration caused by color mixing

Keyword: ROHM Automotive Interior RGB SMD LED    Time: 2023-06-02 15:30:12   Source: ROHM

"In recent years, with the improvement of the electronic degree of automobiles and the development of diversified functions, various driving assistance functions such as automatic speed control, distance detection, and lane line detection have been widely used. In order to display these functions with indicators such as dashboards Functional working status, the industry's demand for RGB SMD LEDs that can express various colors is increasing. In addition, the demand for interior products that use RGB SMD LEDs to create a sense of comfort and luxury in the car interior space is also increasing Increase."


~Contributes to the realization of the target color of the lamps and decorative lighting for the function and status display in the car~


ROHM, a world-renowned semiconductor manufacturer (headquartered in Kyoto, Japan), has launched an RGB SMD LED*1 "SMLVN6RGBFU" for automotive interiors, which is ideal for in-vehicle functions such as dashboards and CID (Center Information Display)*2 and Indicator lights*3 for status display, and decorative lighting applications such as footlights and door handle lights.




In recent years, various driving assistance functions such as automatic vehicle speed control, vehicle distance detection, and lane line detection have been widely used with the improvement of the electronic degree of automobiles and the development of diversified functions. In order to display the working status of these functions with indicators such as dashboards, there is an increasing demand for RGB SMD LEDs that can express various colors in the industry. In addition, the demand for interior products that use RGB SMD LEDs to create a sense of comfort and luxury in the car interior is also increasing. Against this backdrop, ROHM has developed RGB SMD LEDs with even less color variation by using its own component technology to finely control the luminescence characteristics of RGB components and improve color mixing performance.


Generally, in order to make RGB SMD LEDs emit light of the target color, technologies that can precisely control the color and brightness of its red, green, and blue (RGB) light-emitting elements, as well as technologies that can improve color mixing performance are required. ROHM has successfully suppressed the chromatic aberration of components by utilizing its integrated production system that integrates superior technologies from the component manufacturing stage, and achieved color performance that is superior to ordinary products. In addition, through the color mixing control technology of components, the color difference that is easy to occur when RGB SMD LEDs are mixed is reduced, which helps to achieve the target color required for automotive interiors. In addition, ROHM provides fine color matching support using a chromaticity simulation system that matches the required specifications.




The new product has been temporarily put into mass production at a monthly output of 300,000 units in February 2023 (sample price: 500 yen/unit, excluding tax). The production base of the pre-process is ROHM Hamamatsu Co., Ltd. (Hamamatsu City, Japan), and the production base of the post-process is ROHM Semiconductor (China) Co., Ltd. (China). In addition, the new product will start e-commerce sales in May 2023, and can be purchased from e-commerce platforms such as Ameya360 and Sekorm.


In the future, ROHM will continue to adhere to the concept of "quality first", develop advanced products suitable for the field of automotive lighting, and contribute to the creation of a safe and comfortable interior environment.


<Chroma simulation system>


SMLVN6RGBFU sets adjustment coefficients for each chromaticity level and provides color matching support closer to the target color. By providing new RGB SMD LED products and high-precision chromaticity simulation at the same time, more refined color matching effects can be achieved.




<Product Lineup>


<Application example>


◇Indicators used to display functions and status: instrument panel, CID, navigation, audio, heater control, etc.

◇Decorative lighting: footlights, ceiling lights, door handle lights, cup holder lights, etc.


<E-commerce sales information>


Sales start time: from May 2023

E-commerce platform: Ameya360, Sekorm

New products will also be gradually released on other e-commerce platforms.




<Term Explanation>


*1) RGB SMD LED


LEDs of various colors can be produced through the combination of the three primary colors of light - R (Red, red), G (Green, green) and B (Blue, blue).


*2) CID(Center Information Display)


The liquid crystal display located in the center console of the car cockpit. In recent years, CIDs have been used not only as displays in car navigation systems and infotainment systems, but also as operating units for in-vehicle functions such as air conditioners.


*3) Indicator light


A device that displays the status of the vehicle to the driver.


【About ROHM】


Founded in 1958, ROHM started with the production of resistors, its main product. After more than half a century of development, it has become a world-renowned semiconductor manufacturer. ROHM's corporate philosophy is: "We always put product quality first. No matter how difficult we encounter, we will continue to provide a large number of high-quality products for domestic and foreign users, and contribute to the progress and improvement of culture" .


ROHM's production, sales, and R&D networks are distributed all over the world. The products involve many fields, including IC, discrete components, optical components, passive components, power components, modules, etc. In the world's electronics industry, many high-quality products of ROHM have been approved and praised by the market, becoming a leading enterprise in system IC and advanced semiconductor technology.

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Our company has accumulated the following advantageous channels of spot goods and PPV in the long-term cooperation:


Brand product:


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2.XILINX CPLD : FPGA


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