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Corning interview: optimistic about the market prospect of glass light guide plate

Corning company is located in 8, Liangjiang New Area, Chongqing. The new factory of generation 5 liquid crystal display (LCD) glass substrate was put into production on February 16

this new factory is Corning's second LCD glass factory in Chinese Mainland, which can provide 8 for the company's strategic customers. Glass substrates of 5 generations and above. Corning also has an 8. Generation 5 LCD glass factory

"Chongqing LCD glass factory has once again proved our long-term commitment to serving global customers." Ji Kebin, President of Corning Glass Technology Group, said, "as a global leader in the field of special glass, Corning is committed to providing our Chinese customers with the best quality and performance LCD glass substrates."

"we are very happy that Corning display technology has added a new plant to its global supply network." Zhang Zheng, global general manager of Corning display technology department, said at the launch event, "Chongqing has an important strategic position in China's it and LCD industries. With the establishment of the Chongqing plant, we can localize the glass supply and provide regional technical and manufacturing support to provide better services for Chinese panel manufacturers."

with the support of Chongqing municipal government and local leaders, Corning announced in June 2015 that it would invest and set up a new LCD glass factory in the water and soil high tech Industrial Park of Chongqing Liangjiang New Area

at today's launch event, Li Fang, President and general manager of Corning Greater China, said, "the launch of the Chongqing plant marks another important step in deepening China's business operations. Thanks to the strong support of the Chongqing municipal government and Chongqing Liangjiang New Area, this important investment has been realized."

cinno is very honored to be invited to interview Zhang Zheng, global general manager of Corning display technology, and chenzhishan, President of Corning display technology (China). The following on-site interview content is compiled and shared with friends in the industrial chain to understand Corning's views and views on the latest display market

Q: does Corning have the limit of generation line size in the manufacturing technology of glass liquid crystal substrate? Corning thinks whether it will go to 10 in the future. Is the development of higher generation lines above the 5th generation line technically feasible

A: at present, we see that the large-size TV market and commercial market above 60 "are growing rapidly, and now 10. Generation 5 has a good economic cutting benefit on 65 "75", which also proves that 10. The investment of generation 5 is a correct investment that meets the market demand

Corning has always been a leader in the development history of liquid crystal glass substrates. We are the first to launch the latest generation of glass sizes. From the earliest five generations to the later eight. Generation 5, we have helped many customers solve technical problems. In terms of large size, Corning's technology is not the bottleneck. Take 10. Take generation 5 as an example. Theoretically, the panel can be more than 3 meters wide. To make such a large display screen, it is not the problem of liquid crystal glass substrate that needs to be overcome, but the problem of equipment and transportation

therefore, this industry also has five generations, six generations and eight generations as it grows. 5 generations, 10. The level of generation 5 is developing on this generation line. Whether there is a larger generation line in the future depends on the needs of customers

if customers have new requirements for our manufacturing process in the future and raise new problems, including size or other aspects, we will combine Corning's own technical advantages and global supply chain to provide customers with the best solution

Q: at present, Corning has 10 supporting BOE in Hefei. How is the project progress of generation 5 production line

answer: we will move in the equipment after the completion of the plant in March 2017, and plan to achieve mass production in the leading quarter of 2018

Q: how does Corning view the competitive relationship between OLED and LCD? How big is the influence of OLED in large-scale TV

answer: we believe that in the application of large-scale display, LCD technology still occupies an obvious advantage in recent years, while the application proportion of OLED is relatively low

oled is mainly used in the field of small-size mobile display. Corning is also actively involved in the flexible OLED display market, such as the glass carrier required for PI film and the flexible OLED display attached to Corning's Gorilla 3D cover glass, providing customers with a very special experience

in the past two years, OLED panel factories have invested more and more, but the construction of the factory may be affected by the equipment capacity and suffer some development bottlenecks

Q: how does Corning respond to the new technology trends in the ultra-high resolution 8K, super market TVs, OLEDs and other markets

answer: high resolution products have higher requirements for surface finish of glass, more stringent for defects on glass, and higher production requirements. Corning's melt pull-down method requires not only immediate pressure replenishment; Only charge nitrogen into the accumulator; With good process quality, it can also support the needs of customers in reducing light leakage and curved surface display

as an industry-leading display glass, Corning's Lotus NXT glass is applied to rigid and flexible OLED panels. Lotus NXT glass is an ideal solution for double glazing in rigid OLED panels, i.e. substrates and sealing materials. Although flexible OLED panels usually use plastic substrates in order to realize the arc or even bending design of equipment, these plastic panels rely on high-quality carriers such as lotusnxt glass to meet the stringent manufacturing process requirements

Corning? EAGLE XG? Slim is not only a common physical property experimental glass substrate, which enables panel manufacturers to produce thinner, lighter and more environmentally conscious display panels. Eagle XG slim glass has dimensional stability and extremely clean, smooth and flat surface. At present, it has 0. 25mm (max. 5. 5 generation size), 0. 3mm (max. 6 generation size), 0. 4mm (max. 8. 5 generation size) and 0. 5mm (up to 10. 5 generation size) and other models make it possible to display panels that are lighter, thinner and curved. Moreover, no heavy metals are added to its glass components, thereby reducing the impact of the manufacturing process on the environment. The ultra-thin properties of Eagle XG slim glass help panel manufacturers reduce or completely avoid potential environmental and health hazards related to panel thinning

what we pursue is to bring you a technology that can change their lives with the help of our technical advantages in the field of glass ceramics. So whether it's low loss optical fiber, optical communication or liquid crystal display, we have been providing customers with new products and technologies, which generally requires many years of development and long-term investment to achieve such success. We always adhere to the concept of "innovation changes life", which is also the basic reason for our success in many fields

Q: what is the technical difference between LTPS glass and a-Si glass

answer: the process temperature of oxide is generally higher than that of a-Si, while the process temperature of LTPS is higher than that of a-Si. LTPS and oxide require glass substrates to maintain physical and thermal stability in the high-temperature process. In addition, LTPS and oxide put forward stricter requirements for the surface quality and thickness control of glass under high-temperature process, which is an essential glass attribute for high-performance displays to achieve high resolution and fast screen refresh

Q: how do you view the concern of overcapacity caused by domestic investment in high-generation LCD panel lines

answer: we will pay attention to the investment and production of the overall production line. As a supplier of liquid crystal glass, Corning believes that in the liquid crystal glass market, supply and demand will still maintain a balance in the future

we have a complete global supply chain. How to best support our customers needs to evaluate the whole supply chain, including cost, transportation and other considerations, to see how we can better meet the needs of customers in different market conditions

Q: at present, there are more and more models of glass light guide plates used in oversized TVs. How does Corning view the market demand for glass light guide plates in the future

answer: plastic light guide plate lacks dimensional stability. When the plastic light guide plate is exposed to heat and moisture, the material will distort and expand, thereby affecting its optical and mechanical properties. The instability of plastic requires designers to add a wide frame and a backlight with thick gap to compensate for the size change of plastic. Replacing plastic with glass solves this problem, but the standard glass composition has not been able to meet the optical requirements until iris glass. Color purity is another key requirement of light guide plate. The combination of Corning's patented melting process and the composition of iris glass makes the color deviation performance of Corning light guide plate reach the level of the best material available. Iris glass has a leading level of transmittance and color deviation performance, which exceeds the optical requirements of LCD. This kind of rigid glass with stable size makes LCD TV realize ultra-thin and narrow frame design, thus making the thinnest side light LCD possible

Corning's iris glass light guide plate is 23 times stronger than the ordinary light guide plate, which can replace or reduce the use of metal backplane, and can reduce the thickness of the TV as a whole. LCD TVs with a thickness of less than 5mm need to use glass light guide plates to achieve mass production. Many companies in ces2017 have launched products using Corning light guide plates, which are less than 5mm thick, and some monitors are only 3 thick. 5mm、3。 8mm。 The use of glass light guide plate can make LCD thinner, compete with OLED in thickness, and be brighter, which can give full play to some of the characteristics of Jinan assaying drop hammer impact tester of the panel. Corning iris glass has excellent dimensional stability while ensuring excellent optical performance, enabling manufacturers to produce thinner display products

generally speaking, under the internal circulation, China Chengdu Construction Expo will talk with you about new opportunities in the industry in April 2021

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