Beijing Wald: A major breakthrough in the field of high precision cutting

Smartphones and tablets have set off market demand, coupled with the demand for traditional LCD TVs and notebook computers, as well as the changes in touch screens and touch technologies. In recent years, the flat panel display industry has developed rapidly in China, and it has also driven the flat panel display industry upstream and downstream. The industry is booming. Flat panel display equipment manufacturing has always been a shortcoming in China. However, in recent years, Beijing Wald Diamond Tools Co., Ltd. has made major breakthroughs in the field of high-precision cutting of touch screens, TFT-LCD panels, substrates, AM-OLEDs and cover glass, producing high-permeability, a key consumable in this field. The micro-tooth diamond cutter wheel and corresponding accessory products have broken the monopoly of foreign companies in this field. At the 3rd Electronic Information Industry Expo (CITE2015) held recently, the company's high-permeability toothed diamond cutter wheel won the CITE2015 Innovation and Application Gold Award.
According to the introduction of Wal-Mart Chairman Chen Jifeng, in recent years, whether it is flat-panel TV or mobile phone display, many manufacturers are promoting the concept of ultra-thin and no border. Of course, it's not that the display devices really don't have a border, but that the screen surface blends with the border when they don't work, creating an illusion that there is no border. Although it still has a frame, the thickness of the frame has been greatly reduced compared with the traditional products, making the related equipment smaller and more visually impactful and more beautiful. However, this will place higher demands on the display device. The ultra-fine tooth diamond cutter wheel developed by Wald can effectively meet the high cutting quality requirements of small-sized thinned TFT-LCD panels, AMOLED panels and touch panels. This cutter wheel has ultra-small teeth that distinguish the conventional cutter wheel. It has a small number of teeth and a tooth depth of 1.0-1.8μm. The cutting edge is sharp and can meet the double requirements of high penetration force and high compressive strength. When cutting, the cutting pressure is stable, the cutting line is smooth, the section is flat, and the cut glass has a high Bending value, and the high yield rate is sufficient to ensure the cutting quality of the glass.

At the show, Wald showed off a range of diamond cutter wheels, in which the integrated diamond cutter wheel is mainly suitable for cutting large and medium-sized panels simultaneously. This cutter wheel uses V-shaped teeth with a tooth depth of 10-15μm, which ensures high penetration capability and minimizes particles. This cutter wheel is equipped with a built-in dust cap and an in-line bearing tool holder. It can effectively avoid the dust falling into the bearing during the cutting process, resulting in poor rotation and affecting the cutting quality. In addition, the cutter wheel, the cutter shaft and the tool holder are integrally formed at the time of shipment to form a whole body, which is convenient for disassembly and assembly, and can also avoid mismatch between the cutter wheel and the cutter shaft. The lateral locking device and axial limit design of the integrated cutter wheel can significantly improve the stability of the installation of the cutter wheel holder in the holder, avoiding the S-cut line. The double-edged toothed diamond cutter wheel is mainly used for cutting ultra-thin panel glass coated with a protective film or printing ink. The edge of the protective film or ink layer is cut once, and the secondary cutting edge is cut on the glass, which is easier to cut than the single-angle cutter wheel, and has the characteristics of directly cutting the film and cutting the glass at the same time. The high-permeability diamond cutter wheel is mainly used to cut large and medium-sized TFT-LCD and AMLOLED panels. This kind of micro-recession processing which is superior to the traditional toothless cutter wheel can make the contact surface between the cutter wheel and the glass smaller, and the pressure of the tooth on the glass becomes larger, so that the pressure is larger during the process of rolling and cutting the glass into the cutter wheel. The vibration anti-reflection effect makes the penetration of the cutter wheel stronger. The upper and lower cutter wheels are cut at the same time, which is suitable for use on the sixth generation line. The cutter wheel is directly split after cutting, and the robot automatically grabs directly, and does not require a splitting process. According to Chen Jifeng's introduction, the products have been applied to major panel manufacturers such as AUO, Innolux, BOE, Huaxing Optoelectronics and Tianma Microelectronics.

“The flat panel display industry is an emerging strategic industry, and it is still growing in China, and it will also strongly promote the development of the equipment industry.” Chen Jifeng said. According to the data, it is estimated that the industry diamond cutter wheel market has a capacity of about 1.5 billion yuan, including TFT LCD panel and touch (TP) panel cutting market of 1 billion yuan, TFT liquid crystal substrate, ITO electronic substrate and cover plate of 500 million yuan. Wald has a lot of room for improvement in the TFT LCD panel and the touch panel glass cutting market.

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