lcd panel assembly process made in china

The injection of ITO glass — glass CLEANING and drying — PR COAT — PREBREAK — DEVELOP MAIN CURE — ETCHING — STRIP CLEAN — TOP COAT — UV CURE — curing — MANICURE) – cleaning (CLEAN) – applied orientation agent (PI) PRINT – CURING (MAIN CURE), cleaning (CLEAN), silk screen printing (SEAL/SHORT PRINTING) – baking (CUPPING FURNACE), SPRAY packing material (SPACER SPRAY) – para pressing (ASSEMBLY) – CURING (SEAL MAIN CURING)

B. Cleaning and drying of glass: Clean ITO glass with the cleaning agent and deionized water (DI water), wash impurities and oil stains on the ITO surface with physical or chemical methods and then remove and dry the water to ensure the processing quality of the next process.

General TN and the STN product does not require this step, the TOP film coating process is after the photolithography process making SiO2 coating, once again to the etching area and the etching area between the grooved bridge and the electrode covering, this can have the effect of the insulation layer, and can effectively eliminate the display state of the bottom electrode, also help to improve the perspective characteristics and so on, so most of the high-grade product requires TOP coating.

This process involves coating an oriented layer on the etched ITO glass surface and treating the restricted layer in a specific way so that the liquid crystal molecules can be oriented (arranged) in a specific direction on the surface of the oriented layer. This step is unique to the production of liquid crystal displays.

In this process, two conductive glasses are stacked on top of each other, and sealed together, and cured to make a glass box with a specific thickness of clearance. The technology of box-making is one of the key technologies in LCD manufacturing. (Spacing of LIQUID crystal boxes must be strictly controlled)

SCRIBING — BREAK OFF — LC INJECTION — END seal — BREAK OFF — sharpen — VISUAL inspection — ELECTRICAL test — secondary cleaning special procedure (POLYGON) — BACK PRINTING — dry ink — POLARIZER ASSEMBLY — Thermal pressure — Inspection appearance test (FQC) — BIT PIN — FINAL test — PACKING — IN STOCK.

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China may become the world’s largest LCD panel manufacturing base. Data shows that in the third quarter of this year, our country’s well-known display panel manufacturer BOE surpassed LG Display to become the world’s largest large-size panel manufacturer. At the same time, technological integration and breakthroughs in my country’s display industry are accelerating, and China’s display manufacturing is attracting more and more attention on the global stage.

Recently, market research agency IHS Markit released data showing that the third quarter. South Korea’s well-known panel manufacturer LG Display’s share of the global large-size panel market fell to 19.3%, and BOE’s market share reached 21.7%, which means that BOE surpassed LG to become the world’s largest large-size panel manufacturer.

This is another breakthrough made by BOE this year, and before that, BOE has successfully attracted global attention in the manufacture of small-size panels.A few days ago, BOE announced the mass production of the 6th generation flexible small-size OLED screen production line in Chengdu. It is China’s first 6th generation flexible small-size OLED screen production line, and the world’s second mass-production 6th generation flexible small-size OLED screen production line. The production line uses the world’s most advanced evaporation process, and uses flexible packaging technology to achieve display screen bending and folding. This year is considered to be the first year of my country’s mobile high-end flexible screen to break the South Korean Samsung’s exclusive monopoly and begin to become self-sufficient.

In addition to BOE, CSOT, another panel manufacturing company in my country, has also made many breakthroughs this year. Recently, TCL Group revealed that its subsidiary CSOT has increased its production capacity and continues to maintain full production and full sales. The order in the fourth quarter is in good condition. The production research and development of Wuhan Huaxing’s full-screen products is in progress, and mass production is expected in the fourth quarter.

It is reported that at present, CSOT already has one 11 generation line in Shenzhen, mainly producing TV panels; two 6th generation lines in Wuhan, mainly producing small-size panels such as mobile phones.

The transcripts handed over by BOE and CSOT are just a microcosm of the sudden rise of Chinese panel manufacturing in recent years. Previously, South Korean companies Samsung Display and LG Display occupies an absolute leading position in the global size of panel manufacturing, but now, the situation is changing. Chinese panel manufacturing companies represented by BOE, CSOT, and Tianma Technology are gradually strengthening their own strengths, and they are competing with Korean companies to compete for the “one brother” throne in the world panel manufacturing field.It shows that the industry is under construction and planned investment reaches 800 billion yuan.

At the same time that BOE became the world’s largest large-size panel manufacturer, Juhua Printing Display Public Platform was inaugurated on the 28th in Guangzhou. This is the first public open R&D platform for my country’s display industry.

According to the latest data from the China Electronics Video Association and the China Optical Optoelectronics Industry Association Liquid Crystal Branch, the investment in flat panel display production lines under construction and announced in my country has reached 800 billion yuan. Among them, the LCD panel investment exceeded 500 billion yuan. It is estimated that around 2019, my country will become the world’s largest flat panel display production base.

The information society shows everywhere. TVs, computers, smart phones, wearable devices, etc., are inseparable from the support of the display screen. According to statistics, in 2016 my country’s display industry operating income exceeded 200 billion yuan. In the first half of this year, my country’s display panel shipment area was about 57 million square meters, accounting for about 1/3 of global shipments, second only to South Korea in the world.

In fact, in addition to the breakthrough in the production line, this year, driven by the good news, my country’s panel companies have also handed out good transcripts in the A-share market. In the first three quarters of this year, BOE’s total revenue was 69.408 billion yuan, a year-on-year increase of 51.41%; the net profit was 6.48 billion yuan, a year-on-year increase of 450.45%; basic earnings per share was 0.185 yuan, an increase 4525%; and CSOT revenue and profits have also maintained strong growth, strongly driving TCL Group to “reverse the market” in the color TV field.

Regarding the development trend of China’s display industry, well-known home appliance industry analyst Liu Buchen told reporters that in recent years, Chinese panel manufacturing companies have developed rapidly. At present, in display technology, ordinary liquid crystal displays have no technical problems. Next, OLED, QLED and other futures The development of display technology will become the focus.

As Liu Buchen said, BOE’s products have become more and more mature in small-size OLED displays. Next, it is planned to develop flexible and foldable OLED small-size panels, while in large-size OLED displays, including BOE and Huaxing Optoelectronics and other enterprises intend to break through key technologies through the form of cooperative research and development between Chinese and foreign companies to compete in the future display market.

LED display modules will go through the aging test before assembly. Display setting up is conducted at the highest professional level to ensure the real seamless connection.

The escalating coronavirus crisis is impacting production at display panel factories located in the semi-quarantined city of Wuhan, China, spurring a significant near-term reduction in the global supply of panels used in liquid crystal display televisions (LCDs) and other products.

The five factories in the city producing liquid crystal displays (LCDs) and organic light-emitting diode (OLED) panels will experience near-term slowdowns in production compared to expected levels, according to IHS Markit technology research, now a part of Informa Tech.

With the situation evolving quickly, IHS Markit technology research is still assessing the magnitude of the supply shortfall on multiple display types and markets. However, leading Chinese panel makers stated they believe that total capacity utilization for all LCD fabs in the country could fall by at least 10 percent and perhaps by more than 20 percent during the month of February.

With China expected to own 55 percent of global display manufacturing capacity in 2020, the immediate impact of the production reduction has been a worldwide decrease in availability and an increase in pricing for LCD-TV panels. This has resulted in turmoil throughout the display supply chain as suppliers and purchasers alike scramble to adjust to swiftly changing market conditions.

The leading Chinese suppliers of LCD panels for TVs, notebook PCs and PC monitors now are planning to raise panel prices more aggressively. For example, the price for an open-cell LCD-TV panel was originally expected to rise by $1 or $2 per month in February. However, the actual increase may be $3 to $5 for the month.

Beyond the immediate production impact at these facilities, the coronavirus is also likely to trigger delays in the ramp-up of manufacturing at new display fabs during the first half of 2020. This will reduce overall panel availability during the next few months. It also could result in further panel supply tightness as TV display buyers hasten the pace of their panel purchases to build stockpiles for future shortfalls.

While major panel makers are rightly concerned about the coronavirus’s impact on consumer sales, demand for their products from TV makers has actually increased. TV makers are pulling in their panel demand and sometimes double-booking orders to shore up their inventories. The panel maker indicated that the demand surge for orders delivered in February is as large as 10 percent above the previous demand forecast.

LCD panel makers outsource much of the production of such modules. However, production at several key third-party module suppliers has now ceased, impacting panel production severely throughout the country. Key module supplier SkyTech is sharply reducing production until mid-February.

Panel makers maintain their own captive LCD module factories. However, these operations are also facing production bottlenecks amid the coronavirus crisis.

Flat-panel displays are thin panels of glass or plastic used for electronically displaying text, images, or video. Liquid crystal displays (LCD), OLED (organic light emitting diode) and microLED displays are not quite the same; since LCD uses a liquid crystal that reacts to an electric current blocking light or allowing it to pass through the panel, whereas OLED/microLED displays consist of electroluminescent organic/inorganic materials that generate light when a current is passed through the material. LCD, OLED and microLED displays are driven using LTPS, IGZO, LTPO, and A-Si TFT transistor technologies as their backplane using ITO to supply current to the transistors and in turn to the liquid crystal or electroluminescent material. Segment and passive OLED and LCD displays do not use a backplane but use indium tin oxide (ITO), a transparent conductive material, to pass current to the electroluminescent material or liquid crystal. In LCDs, there is an even layer of liquid crystal throughout the panel whereas an OLED display has the electroluminescent material only where it is meant to light up. OLEDs, LCDs and microLEDs can be made flexible and transparent, but LCDs require a backlight because they cannot emit light on their own like OLEDs and microLEDs.

Liquid-crystal display (or LCD) is a thin, flat panel used for electronically displaying information such as text, images, and moving pictures. They are usually made of glass but they can also be made out of plastic. Some manufacturers make transparent LCD panels and special sequential color segment LCDs that have higher than usual refresh rates and an RGB backlight. The backlight is synchronized with the display so that the colors will show up as needed. The list of LCD manufacturers:

Organic light emitting diode (or OLED displays) is a thin, flat panel made of glass or plastic used for electronically displaying information such as text, images, and moving pictures. OLED panels can also take the shape of a light panel, where red, green and blue light emitting materials are stacked to create a white light panel. OLED displays can also be made transparent and/or flexible and these transparent panels are available on the market and are widely used in smartphones with under-display optical fingerprint sensors. LCD and OLED displays are available in different shapes, the most prominent of which is a circular display, which is used in smartwatches. The list of OLED display manufacturers:

MicroLED displays is an emerging flat-panel display technology consisting of arrays of microscopic LEDs forming the individual pixel elements. Like OLED, microLED offers infinite contrast ratio, but unlike OLED, microLED is immune to screen burn-in, and consumes less power while having higher light output, as it uses LEDs instead of organic electroluminescent materials, The list of MicroLED display manufacturers:

LCDs are made in a glass substrate. For OLED, the substrate can also be plastic. The size of the substrates are specified in generations, with each generation using a larger substrate. For example, a 4th generation substrate is larger in size than a 3rd generation substrate. A larger substrate allows for more panels to be cut from a single substrate, or for larger panels to be made, akin to increasing wafer sizes in the semiconductor industry.

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Foxconn named Young Liu its new chairman after the retirement of founder Terry Gou, effective on 1 July 2019. Young Liu was the special assistant to former chairman Terry Gou and the head of business group S (semiconductor). Analysts said the handover signals the company"s future direction, underscoring the importance of semiconductors, together with technologies like artificial intelligence, robotics, and autonomous driving, after Foxconn"s traditional major business of smartphone assembly has matured.

Expansion was further pursued after a March 2012 acquisition of a 10-percent stake in the Japanese electronics company Sharp Corporation for US$806 million and to purchase up to 50 percent of the LCDs produced at Sharp"s plant in Sakai, Japan.Itu, Brazil, creating 10,000 jobs.

Foxconn’s 2020 revenue was NT$5.36 trillion (US$193 billion).Circuits Assembly magazine named Foxconn the largest electronics manufacturing services company in the world for the 14th straight year.

On 21 October 2022, and in response to a Covid outbreak at Zhengzhou Technology Park, "Foxconn imposes restrictions," including travel restrictions "on iPhone assembly plant, with dine-in meal facilities closed."Zhengzhou Airport Economy Zone, where the Foxconn factory is situated.

As of 2011, Foxconn had at least seven factories in the Johor state,Kulai, where it is developing an industrial park that includes four factories that comprise fully automated assembly lines as well as fully automated packaging lines.

In January 2019, Foxconn said it was reconsidering its initial plans to manufacture LCD screens at the Wisconsin plant, citing high labour costs in the United States.

Flat-panel maker Innolux Corp (群創) said it is scouting new manufacturing sites outside of China in the latest efforts to maintain supply chain resilience amid prolonged geopolitical tensions and customer demand.

Innolux has built LCD panel module assembling lines in Taiwan, in a bid to increase its manufacturing capacity beyond China partly due to requests from customers, who are also diversifying production globally.

The manufacturer is not the only panel maker considering expansion outside China. AUO Corp (友達) has said it would finalize a decision about where to build a new overseas factory early next year.

Innolux said it has received some rush orders for flat panels used in notebook computers and monitors, which would help speed up inventory digestion for the whole LCD supply chain.

However, the company is to raise usage of its panel module production lines to about 80 percent next quarter from its current 65 percent, to prevent COVID-19 infections in China from cutting module production.

Download this stock image: Chinese High Tech Factory Workers on Assembly line testing components of LCD display boards asia asian - AD3HHC from Alamy"s library of millions of hi...

Chinese manufacturers are expected to raise their market share from 39% this year to 52% next year in the monitor panel market, and 36% to 39% in the notebook panel market

Chinese manufacturers are expected to raise their market share from 39% this year to 52% next year in the monitor panel market, and 36% to 39% in the notebook panel market, according to TrendForce’s preliminary shipment forecast of panel makers for 2021. As such, these manufacturers are expected to maintain their plans of transitioning some production capacities from TV panel manufacturing to IT panel manufacturing in spite of the TV panel shortage in 2H20 caused by various factors such as the closedown of SDC’s LCD panel manufacturing operations, the rise of the stay-at-home economy, and the stimulus policies instituted by governments worldwide.

TrendForce indicates that, with regards to the standing of Chinese manufacturers in the IT panel industry, BOE has long established itself as the market leader, while CSOT and HKC are each also catching up fast. After acquiring SDC’s Suzhou-based Gen 8.5 fab, CSOT will possess even more production capacities for monitor panels. At the same time, HKC currently maintains three Gen 8.6 fabs, located in Chongqing, Chuzhou, and Mianyang, and plans to capture additional shares in the monitor panel and notebook panel markets.

Chinese panel makers have been gradually transitioning their current panel capacities to monitor panel production. Most significantly, as more Gen 10.5 production lines become available, TV panel production will most likely take place in Gen 10.5 fabs instead of Gen 8.5 fabs in the future, while the existing Gen 8.5 and Gen 8.6 production lines will be reallocated to monitor panel production in order to expend the excess capacity made available after TV panel production moves to Gen 10.5 fabs. In addition, after SDC’s forecasted closing of LCD panel manufacturing operations at the end of this year, CSOT and HKC will look to capture the resultant supply share of SDC’s absence in the market. On the other hand, since both TCL, which is CSOT’s parent company, and HKC possess monitor ODM operations, should the two companies decide to vertically integrate by making panels for their own monitor products, they will be able to effectively optimize their cost structures.

Although CSOT’s Wuhan-based T3 LTPS Gen 6 production line is primarily dedicated to smartphone and notebook panel manufacturing, the considerable reduction of LTPS smartphone panel demand from Huawei caused by U.S. sanctions means CSOT is expected to make plans for an increase in notebook panel shipment in order to make up for the shortfall. As well, thanks to high demand for TV panels this year, HKC’s production lines have been operating at maximum capacity utilization rates, in turn slowing down its notebook panel business. However, in light of the fact that the COVID-19 pandemic has brought about a rapid surge in TN notebook panel demand, HKC is therefore looking to TN panels as a new commercial opportunity in the notebook display market and subsequently prioritizing TN panel development over IPS panel development as its product strategy. Not only will this reprioritization allow HKC to align its strategy with the current market trend, but it will also quickly raise the yield rate of HKC’s Mianyang-based fab, which had never manufactured NB panels, by instead having the fab manufacture TN panels, which have a relatively simpler manufacturing process.

TrendForce analyst Jeff Yang indicates that, despite Chinese panel makers’ strong intention to enter the IT panel manufacturing business, success in the IT panel market is not solely decided by a company’s production capacity. For instance, with regards to monitor panels, CSOT’s technical competency is mostly focused on VA panels, meaning the company is constrained in its product mixes due to its lack of mainstream IPS offerings. Although HKC is equipped with both IPS and VA technologies, it lacks experience in manufacturing curved VA panels, leading its clients to take on a wait-and-see approach before placing additional orders. For notebook panels, although CSOT is primarily focusing on the mid-range and high-end LTPS notebook panel market, it faces intense competition from Samsung’s OLED notebook panels, which are gradually extending from the high-end segment to the mid-range segment as well. Likewise, HKC will have to take time in order to make headways in the notebook panel market, since it has not reached any production milestones, and it requires time to cultivate a significant client base.

Corning Incorporated (NYSE: GLW) today hosted an opening ceremony for its Gen 10.5 liquid crystal display (LCD) glass substrate manufacturing facility in the city of Wuhan in the Hubei Province, China. The facility is co-located with a BOE Technology Group Co., Ltd. (BOE) plant. With the successful operation of the plant, and the easing of restrictions in the region, Corning is commemorating this important step in building its presence in China and strengthening its relationship with an industry leader.

This high-volume manufacturing facility allows Corning to deliver Gen 10.5 glass substrates, measuring approximately 3 meters wide by 3 meters high, directly to BOE for its production of large-size display panels. Gen 10.5 glass provides the most economical cuts for 65- and 75-inch TVs, which are expected to drive display-glass market growth over the next several years. The market for large-size TVs, defined as 65-inch and larger, is projected to grow at a double-digit compounded annual growth rate though 2024.

Corning began shipping production samples from the Wuhan plant in January of 2020 and achieved finishing line mass production by mid-2020, despite pandemic-related challenges. The Wuhan manufacturing facility is Corning’s sixth LCD glass plant on the Chinese mainland and its second Gen 10.5 facility along with the company’s Hefei plant in the Anhui Province, which opened in 2018.

About Corning IncorporatedCorning (www.corning.com) is one of the world"s leading innovators in materials science, with a 170-year track record of life-changing inventions. Corning applies its unparalleled expertise in glass science, ceramic science, and optical physics along with its deep manufacturing and engineering capabilities to develop category-defining products that transform industries and enhance people"s lives. Corning succeeds through sustained investment in RD&E, a unique combination of material and process innovation, and deep, trust-based relationships with customers who are global leaders in their industries. Corning"s capabilities are versatile and synergistic, which allows the company to evolve to meet changing market needs, while also helping our customers capture new opportunities in dynamic industries. Today, Corning"s markets include optical communications, mobile consumer electronics, display, automotive, and life sciences.