The world’s largest 48-inch Panasonic rear seat display installed in the Lexus LM
On December 13th, Panasonic Automotive Systems held a briefing session regarding the 48-inch display system installed in the Lexus “LM”. This 48-inch display will be installed in the rear seats, and according to company research, it will be the world’s largest rear seat display.
Panasonic Automotive Systems HMI Systems Division is in charge of the 48-inch display. It has an aspect ratio of 32:9, which is equivalent to two conventional displays. In other words, it has two 16:9 full HD displays connected side by side.
Lexus LM
Taking advantage of this size, LM offers a panoramic mode with a single screen, a single screen display mode in the center, and a 2-screen mode with two screens lined up side by side. Therefore, it also has two HDMI inputs.
2 screen mode Full screen mode Smartphone mirroring mode
According to Yuichi Kobe, General Manager of Product Department 1, Display Business Unit, HMI Systems Division, the company’s first rear-seat display business was the 1997 Toyota Granvia. He explained that the company was selected because of its in-vehicle technology and large-screen LCD technology, and introduced the company’s business to meet the demand for large in-vehicle screens and displays for MaaS and other applications.
Panasonic Automotive Systems Co., Ltd. HMI Systems Division Display Business Unit Display Business Unit 1 Product Department Manager Yuichi Kobe (center); PM Division Manager Kazumasa Nagashima (right); Product Development Division 3 Manager Masanobu Yaginuma (left) Organizational Structure HMI Systems Division aims to provide value Developing products that connect people and cars Taking on the challenge of rear seat space solution business
Considered safety as an in-vehicle display
48-inch display installed in LM
Kazumasa Nagashima, Manager, PM Section, Product Department, HMI Systems Division, Display Business Unit, explained the actual development. This in-vehicle display was developed together with Toyota Auto Body, and as there were changes in specifications such as going from 26 inches to 48 inches, a development method called CCPM (Critical Chain Project Management) was adopted. The company says it was able to shorten the functional implementation and evaluation period by 2.5 months (18%) from 14.5 months to 12 months.
For the display, we pursue the largest pillar-to-pillar size. Since the main focus is on 16:9 source display, it is a 48-inch 32:9 system with two 26-inch full HD displays connected side by side. Of course, it is desirable to use full HD in LCD panel manufacturing, and the size seems to have been determined from that perspective.
The die-cast parts of the display mounting part of the 48-inch display unit on display The split structure on the back of the display.It is designed to bend towards you from the center in case of an emergency.
We reduced the frame size by 42% to achieve the maximum screen size for in-vehicle use. Specifically, we changed the backlight bezel to a stronger part like die-casting, and succeeded in reducing the size from about 72mm to about 42mm.
Additionally, since this 48-inch display is installed in a car, it is designed to handle vibrations and side collisions. To deal with vibration, we perform vibration analysis and implement maintenance that corresponds to that vibration. The side collision response system is designed to fold forward in the event of an input from the side, which is said to be a safety consideration for guests sitting in the rear seats.
If you actually look at the back of the display, you can see a dividing line on the die-cast frame. In the event of a side collision, the structure bends forward in a V-shape from this point, making it difficult for protrusions such as the liquid crystal display to protrude toward the rear seats.
Looking at the back, you can see the die-cast mounting parts, and the whole unit weighs about 15 kg.
About the rear seat 48-inch display system Features of the rear seat 48-inch display system About screen split mode Achievement of short-term development by introducing CCPM Co-creation of in-vehicle quality by Toyota Auto Body and Panasonic
According to Mr. Nagashima, the impetus for development was a request from Lexus to install the world’s largest LCD display in the rear seat. In response to this demand, we received an order for a 26-inch x 2 48-inch display in 2021. It was developed and officially announced in 2023.
2023-12-13 03:47:11
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