The trend of large screens for in-vehicle displays started with the Tesla Model S using a 17-inch large-size touch center control screen, and other manufacturers followed suit. The new screen MBUX Hyperscreen used in the latest EQS pure electric vehicle released by Mercedes-Benz has three The 56-inch super-large screen uses a 12.3-inch instrument at the same time, with a full width of more than 142 cm, and a total of 12 sensors under the touch screen for tactile feedback during operation.From Ideal ONE to Zhiji IML7, Ford EVOS, etc., such a through-type large screen design is used. The entire center console is composed of at least 3 screens to create such a visually impactful interior.The diversification of screen technology will also be a new direction for in-vehicle display.CINNO Research believes that a number of brand models have begun to be equipped with Mini LED displays, and Mini LED vehicle display is expected to form a large-scale shipment in 2023; and Micro LED display technology is characterized by its transparency, curved surface, high brightness, and low power consumption. The advantages have also begun to be promoted in the car display, and it is expected that there will be opportunities for mass production and shipment after 2025; the current penetration rate of OLED display technology in the application field of the car display is still low, and it is expected to account for less than 1% in 2022.In addition, the increase in the amount of human-computer interaction information leads to an increase in the display area and the interactive touch operation area, which will increase the cost and body weight of the vehicle display touch.An automotive supply chain source said: "Whether it is an OEM or a module manufacturer, it is gradually shifting from the previous OGS and On Cell panels to In Cell panels because of the demand for thin and light display products."Lightweight and thin on-board display products can reduce the body weight and improve the energy efficiency ratio. At the same time, thin and thin bezels and high screen ratio are also the mainstream design styles of automotive interiors at this stage.CINNO Research observed that in recent years, in order to meet the needs of high definition, high contrast, low power consumption, low reflectivity, and integration of touch/display functions, TFT-LCD In Cell display technology has gradually been applied in the field of vehicle display. Increase.Just like the development of mobile phone display panel technology, the same is true for vehicle display.Both On Cell and In Cell integrate the touch layer and the display panel, which can further reduce the overall thickness of the screen and make it thinner and lighter.OCA only needs to appear once and is used to paste the two-layer structure of the protective glass and the "touch-display layer", and to ensure the normal operation of the touch function by adding a separate touch circuit to the display layer.The biggest difference between On Cell and In Cell lies in whether the touch unit/module is above or below the "CF (filter)". The touch layer designed by On Cell is placed on the outside of the CF glass of the display panel. There is also a layer of color filter substrate barrier between the liquid crystal pixels, unlike the In Cell technology, the touch unit is embedded in the liquid crystal layer.On Cell requires separate display driver chip and touch driver chip, while In Cell can use one TDDI chip to realize display driver and touch driver at the same time.In short, the technology of the In Cell screen is the most complex, but the color balance of the display effect is better. Since the touch layer and the air layer are reduced, it can also obtain a more consistent look and feel when the screen is off."In Cell screens can reduce the number of panel layers and corresponding materials, and reduce a certain cost. Under the premise that the technology is gradually mature, In Cell screens are gradually being introduced in the automotive display market, which not only can meet the design requirements of narrow bezels and thin thickness, but also more The low reflectivity allows the screen to have an integrated look and feel when the screen is turned off during the day, and improves the display contrast to a certain extent." A display technician pointed out the advantages of the In Cell screen.