? (Another innovative attempt to turn the folding screen into a laptop terminal form) "After opening and closing, the screen is as flat as a mirror, the screen seems to flow with a three-dimensional sense, and the touch of the screen virtual keyboard is smooth, which can present different forms such as book type, computer type, tablet type, vertical type..." At the New Display Innovation Achievement Exhibition of 2022 World Display Industry Conference, The reporter's attention was attracted by BOE's first 17.3-inch oversize folding OLED notebook product on display. The larger folding screen and the richer folding function adaptation bring a more shocking experience than folding screen phones. Folding screen laptop is not only another milestone product in the field of flexible OLED display, but also another innovation attempt in the form of laptop terminal, bringing more interaction possibilities for office and entertainment. Since Lenovo Group launched its first new product in 2020, to the second half of this year when Lenovo updated its second-generation products and ASUS launched its first new product, the popularity of folding screen laptops has been rising. It is not known whether this category that breaks the boundary of vision is enterprise technology display or another meaningful long-term layout, but the era of folding large screen display is accelerating. Folding into the era of large screen In October 2020, Lenovo officially released the world's first folding screen laptop, ThinkPad X1 Fold, which was quite epoch-making when the folding screen phone had not yet opened the market. The folding screen of this product is composed of five layers of screens stacked together. With the design of folding shaft hinge, it has passed the durability test of opening and closing more than 30000 times. In October this year, Lenovo released a new ThinkPad X1 Fold 2022 product. Compared with the first generation product, the biggest change this time is the use of a water drop type structural hinge design. Through the movable inner and outer double-layer skeleton design, the shear stress generated by the section during folding is largely offset, so that the screen can still keep a mirror like flat after repeatedly opening and closing. "Evolution" is also achieved in the thickness of the fuselage, which is only 17.4mm thick after folding. However, the folding screen laptop product is not exclusive to Lenovo. Asustek also launched a folding screen notebook Zenbook 17 Fold on August 31 this year. In terms of product form, there is no much difference between Lenovo and Asustek's folding screen, mainly in screen size, folding shape, hinge and other details. Subsequently, ASUS released the Lingyao X Fold product at the autumn new product launch in September. The 17.3-inch flexible OLED screen can be bent from the middle to two 12.5-inch screens. The 180 ° precision hinge design supports free hover and can realize six use forms. The body is as light as about 1.5kg, and the thinnest part is about 8.7mm. With the folding capacity, it can be easily carried in the bag. At present, the price of the above products is about 10000 or 20000 yuan. It is reported that Dell, HP and Samsung are also increasing research and development, and Apple is also paying attention to the research and development of folding screen notebook computers of about 20 inches, which proves that the head manufacturers are optimistic about the folding screen notebook computer market. Canalys, a market research institution, told reporters that there are few participants in the market now, but the equipment on the market has proved to be reliable. The folding screen has