repair lines on lcd screen made in china

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LCD manufacturers are mainly located in China, Taiwan, Korea, Japan. Almost all the lcd or TFT manufacturers have built or moved their lcd plants to China on the past decades. Top TFT lcd and OLED display manufactuers including BOE, COST, Tianma, IVO from China mainland, and Innolux, AUO from Tianwan, but they have established factories in China mainland as well, and other small-middium sizes lcd manufacturers in China.
China flat display revenue has reached to Sixty billion US Dollars from 2020. there are 35 tft lcd lines (higher than 6 generation lines) in China,China is the best place for seeking the lcd manufacturers.
The first half of 2021, BOE revenue has been reached to twenty billion US dollars, increased more than 90% than thesame time of 2020, the main revenue is from TFT LCD, AMoled. BOE flexible amoled screens" output have been reach to 25KK pcs at the first half of 2021.the new display group Micro LED revenue has been increased to 0.25% of the total revenue as well.
Established in 1993 BOE Technology Group Co. Ltd. is the top1 tft lcd manufacturers in China, headquarter in Beijing, China, BOE has 4 lines of G6 AMOLED production lines that can make flexible OLED, BOE is the authorized screen supplier of Apple, Huawei, Xiaomi, etc,the first G10.5 TFT line is made in BOE.BOE main products is in large sizes of tft lcd panel,the maximum lcd sizes what BOE made is up to 110 inch tft panel, 8k resolution. BOE is the bigger supplier for flexible AM OLED in China.
As the market forecast of 2022, iPhone OLED purchasing quantity would reach 223 million pcs, more 40 million than 2021, the main suppliers of iPhone OLED screen are from Samsung display (61%), LG display (25%), BOE (14%). Samsung also plan to purchase 3.5 million pcs AMOLED screen from BOE for their Galaxy"s screen in 2022.
Technology Co., Ltd), established in 2009. CSOT is the company from TCL, CSOT has eight tft LCD panel plants, four tft lcd modules plants in Shenzhen, Wuhan, Huizhou, Suzhou, Guangzhou and in India. CSOTproviding panels and modules for TV and mobile
three decades.Tianma is the leader of small to medium size displays in technologyin China. Tianma have the tft panel factories in Shenzhen, Shanhai, Chendu, Xiamen city, Tianma"s Shenzhen factory could make the monochrome lcd panel and LCD module, TFT LCD module, TFT touch screen module. Tianma is top 1 manufactures in Automotive display screen and LTPS TFT panel.
Tianma and BOE are the top grade lcd manufacturers in China, because they are big lcd manufacturers, their minimum order quantity would be reached 30k pcs MOQ for small sizes lcd panel. price is also top grade, it might be more expensive 50%~80% than the market price.
Panda electronics is established in 1936, located in Nanjing, Jiangshu, China. Panda has a G6 and G8.6 TFT panel lines (bought from Sharp). The TFT panel technologies are mainly from Sharp, but its technology is not compliance to the other tft panels from other tft manufactures, it lead to the capacity efficiency is lower than other tft panel manufacturers. the latest news in 2022, Panda might be bougt to BOE in this year.
Established in 2005, IVO is located in Kunsan,Jiangshu province, China, IVO have more than 3000 employee, 400 R&D employee, IVO have a G-5 tft panel production line, IVO products are including tft panel for notebook, automotive display, smart phone screen. 60% of IVO tft panel is for notebook application (TOP 6 in the worldwide), 23% for smart phone, 11% for automotive.
Besides the lcd manufacturers from China mainland,inGreater China region,there are other lcd manufacturers in Taiwan,even they started from Taiwan, they all have built the lcd plants in China mainland as well,let"s see the lcd manufacturers in Taiwan:
Chimei Innolux Corporation was the successor company, and it initially preserved the Chimei name. In order to differentiate itself from the ChiMei brand, the company was renamed "Innolux Corporation" in December 2012.
Innolux"s 14 plants in Taiwan possess a complete range of 3.5G, 4G, 4.5G, 5G, 6G, 7.5G, and 8.5G-8.6G production line in Taiwan and China mainland, offering a full range of large/medium/small LCD panels and touch-control screens.including 4K2K ultra-high resolution, 3D naked eye, IGZO, LTPS, AMOLED, OLED, and touch-control solutions,full range of TFT LCD panel modules and touch panels, including TV panels, desktop monitors, notebook computer panels, small and medium-sized panels, and medical and automotive panels.
AUO is the tft lcd panel manufacturers in Taiwan,AUO has the lcd factories in Tianma and China mainland,AUOOffer the full range of display products with industry-leading display technology,such as 8K4K resolution TFT lcd panel, wide color gamut, high dynamic range, mini LED backlight, ultra high refresh rate, ultra high brightness and low power consumption. AUO is also actively developing curved, super slim, bezel-less, extreme narrow bezel and free-form technologies that boast aesthetic beauty in terms of design.Micro LED, flexible and foldable AMOLED, and fingerprint sensing technologies were also developed for people to enjoy a new smart living experience.
Hannstar was found in 1998 in Taiwan, Hannstar display hasG5.3 TFT-LCD factory in Tainan and the Nanjing LCM/Touch factories, providing various products and focus on the vertical integration of industrial resources, creating new products for future applications and business models.
driver, backlight etc ,then make it to tft lcd module. so its price is also more expensive than many other lcd module manufacturers in China mainland.
Maclight is a China based display company, located in Shenzhen, China. ISO9001 certified, as a company that more than 10 years working experiences in display, Maclight has the good relationship with top tft panel manufacturers, it guarantee that we could provide a long term stable supply in our products, we commit our products with reliable quality and competitive prices.
Maclight products included monochrome lcd, TFT lcd module and OLED display, touch screen module, Maclight is special in custom lcd display, Sunlight readable tft lcd module, tft lcd with capacitive touch screen. Maclight is the leader of round lcd display. Maclight is also the long term supplier for many lcd companies in USA and Europe.
If you want tobuy lcd moduleorbuy tft screenfrom China with good quality and competitive price, Maclight would be a best choice for your glowing business.

Watching your mobile screen with those white or black vertical/horizontal lines is annoying. In short, it’s tough to use a phone with these lines appearing on the screen. Typically, this issue is associated with the LCD, caused by a faulty hardware component in your device due to some accidental fall or water damage. Phones with such damages can only be fixed at a phone repair center.
If you are itel, TECNO or Infinix phone user and is troubled with vertical and horizontal line issues, make a reservation now without waiting time at the service shop. Carlcare Service will fix your phones easily. If your phone is under warranty, Carlcare can also save you repair costs. Check warranty now>>
However, sometimes the culprit could be an app or software glitch, hindering the functionality of key components like display assembly or motherboard. In that case, you can tackle the situation at home.
Before you head on to the fixes, let’s make your phone data safe. Sometimes, these lines are irreversible, and even the solutions you’re up to try may be followed by some sort of data loss. Therefore, the first thing you should do is make a backup of important files and apps on your device. Some popular ways for data back in Android devices are via:
In case you’re not sure about the process, it’s better to take help from a professional repair center. For Infinix, Itel, and TECNO users, Carlcare Service - being their official service center for these brands- is a recommended place to go.
If there’re white lines on the screen, this solution may prove effective. A battery cycle is when you charge a mobile to 100% and let it drain to 0% again. Usually, the lines will disappear soon as you charge the battery fully.
If the above methods don’t work, it’s time to try this masterstroke. Using your phone in a safe mode will confirm if the lines are because of some faulty app or software.
Check if the lines are gone! If yes (hopefully), then a third-party app is the culprit. Now uninstall the latest downloaded applications until the issue is gone. OR you should try the Solution:4
Suppose the lines are still visible. Then the issue is most likely due to some hardware failure- and the best option for you is to take your device to a reliable repair center.
It won’t be aggregation if you call “Factory Reset” the mother of all solutions. It fixes most of the issues caused by an app or software glitch. The process actually brings your phone back to the factory setting by erasing all the apps and files you’ve downloaded post your phone purchase.
If the horizontal or vertical lines still appear on your phone screen after trying all the above methods, you better take your device to a reliable mobile repair store near you. Most likely, it’s a faulty hardware component that needs to be repaired or replaced. Here, we would suggest you opt for only an authorized service center, as this will ensure flawless repair at a reasonable cost. Besides, if any of the components have to be replaced, they will be genuine and as per your specific requirements.
If this issue arises in your Infinix, Itel, or TECNO phone, Carlcare Service is here to help you! Pay a visit to your nearby Carlcare center. Our highly skilled technicians will fix the issues and saves you much trouble.
As the official service center part, we provide 100% original spare parts and various value-added services for Infinix, Itel, and TECNO users. Now with the online reservation service through Carlcare App, you don’t need to wait while your phone is repaired at our service centers.

Quality ControlProfessional QC team. Each products are through strict test with inspection machine and inspection before shipping, Ensure the goods can be used to your country.
AboutGuangzhou Youyue Electronic Technology Co.,Ltdis a high-tech enterprise specializing in the mobile phone spare parts and tablet parts with high quality and competitive price, prompt delivery and courteous manner of our .
was established in 2012 which dedicated in mobile phone, tablet pc, laptop replacement parts. We are specialty providing large stock for spare parts, various kinds of parts and different quality for you and your business.
Smart Part, alibaba assessed 2 years gold supplier. Tightened inspection, rigorous test, attentive services, that is we do for you. Quality, Reliability, Integrity! We are looking forward to be friend and long term cooperation strategic partners.
Smart Part, complete rigorous inspection standards, professional test device, ensures every order will be tested by professional technicians before ship out.
180 dayswarranty, accept ship back after you receive the goods if there are some quality problem. We don’t be responsible for the follow situations:No warranty for man-made damage.

Broken screen replacement service is provided from thousands of repairs stores and phone parts wholesalers worldwide, iPhone of which are mostly engaged in. So how to purchase reliable LCD screens among so many quality grades from China suppliers? Let me firstly elaborate on the quality grades of the iPhone LCD digitizer assembly that most repair stores and traders used to replace the broken ones.
According to the investigation, 90% of the Chinese iPhone LCD screen suppliers are found selling third-party manufactured screens and seldom sell genuine original LCD screens. Therefore, if your phone screen is broken, there would be a high chance for your screen to be replaced with a non-original one. Why? Maybe the cost and quality are relatively competitive, so why not?
As known, Foxconn is authorized to assemble iPhone, so there are some original iPhone LCD screens leaked from the assemble factory. And there are brought out from the factory for replacement. However the price is definitely high and still, some people care more about the quality of the screen than how much they cost, so for this group of customers, the Original Quality of LCD digitizer assemblies are preferred.
For some LCD digitizers, the LCDs are still working while the front glasses are broken, which can be recycled. Some factories recycled these broken screens by removing the broken front glass and attach a new one, then the LCD digitizer assembly would be new again, which is what called refurbished. Brand new original LCD screens are limited, and the refurbished ones can replenish the shortage of the new original LCD digitizer assemblies, for their quality would be more stable than the third-party manufactured.
Some Chinese factories purchase the original single LCD display, not compete LCD screen from the original factory, and then attach high copy front glass, backlight, etc, materials into a complete LCD screen, which quality is not stable and the display color is slightly different from the ones with high copy backlight. Well, their price would be cheaper and loved by many repair shops and wholesalers.
Under the shortage of original LCD screens, many Chinese factories begin to produce the high copy LCD screen. The stock and supply are getting less and less since about 2015, which leads the price goes higher and higher. Therefore the Chinese manufacturer starts to produce LCD screens with high copy raw materials. With competitive prices and good quality that meet most iPhone users’ needs, they are also popular among many wholesalers and repair shops.
With the premium quality of LCD and OLED screens tested strictly, we’ve helped many clients enlarge their markets worldwide. If you wholesale the LCD digitizer assembly or retail them in your repair shop, more information and sample are supported for your reference, please do not hesitate to contact us or leave your comment to discuss more.

In recent time, China domestic companies like BOE have overtaken LCD manufacturers from Korea and Japan. For the first three quarters of 2020, China LCD companies shipped 97.01 million square meters TFT LCD. And China"s LCD display manufacturers expect to grab 70% global LCD panel shipments very soon.
BOE started LCD manufacturing in 1994, and has grown into the largest LCD manufacturers in the world. Who has the 1st generation 10.5 TFT LCD production line. BOE"s LCD products are widely used in areas like TV, monitor, mobile phone, laptop computer etc.
TianMa Microelectronics is a professional LCD and LCM manufacturer. The company owns generation 4.5 TFT LCD production lines, mainly focuses on making medium to small size LCD product. TianMa works on consult, design and manufacturing of LCD display. Its LCDs are used in medical, instrument, telecommunication and auto industries.
TCL CSOT (TCL China Star Optoelectronics Technology Co., Ltd), established in November, 2009. TCL has six LCD panel production lines commissioned, providing panels and modules for TV and mobile products. The products range from large, small & medium display panel and touch modules.
Everdisplay Optronics (Shanghai) Co.,Ltd.(EDO) is a company dedicated to production of small-to-medium AMOLED display and research of next generation technology. The company currently has generation 4.5 OLED line.
Established in 1996, Topway is a high-tech enterprise specializing in the design and manufacturing of industrial LCD module. Topway"s TFT LCD displays are known worldwide for their flexible use, reliable quality and reliable support. More than 20 years expertise coupled with longevity of LCD modules make Topway a trustworthy partner for decades. CMRC (market research institution belonged to Statistics China before) named Topway one of the top 10 LCD manufactures in China.
Founded in 2006, K&D Technology makes TFT-LCM, touch screen, finger print recognition and backlight. Its products are used in smart phone, tablet computer, laptop computer and so on.
Established in 2013, Eternal Material Technology is committed to the research, development and manufacturing of electronic materials and providing technical services. EMT is leading the industry with its products of OLED and color photoresist materials.
The Company engages in the R&D, manufacturing, and sale of LCD panels. It offers LCD panels for notebook computers, desktop computer monitors, LCD TV sets, vehicle-mounted IPC, consumer electronics products, mobile devices, tablet PCs, desktop PCs, and industrial displays.
Founded in 2008,Yunnan OLiGHTEK Opto-Electronic Technology Co.,Ltd. dedicated themselves to developing high definition AMOLED (Active Matrix-Organic Light Emitting Diode) technology and micro-displays.
In Topway, we work side by side to help you overcome any technical and none technical challenges that may arise during product design, manufacture or installation. We can even take care of component sourcing and manufacturing for you.

Dell recommends ensuring that the device drivers and BIOS are up to date using the SupportAssist application for optimal video performance and to help resolve common video-related issues.
NOTE: When SupportAssist does not show up in the search results, go to the SupportAssist for PCs and tablets page for information about downloading and installing SupportAssist.
To learn how to manually download and install a device driver such as Chipset, Video card (GPU), and Monitor driver (if required, most monitor drivers are delivered automatically through Windows Update) on your Dell computer, see the Dell knowledge base article How to Download and Install Dell Drivers.
We must verify whether the problem is the display screen of the laptop, video card (GPU), or video settings on the computer. A straightforward way to identify this is to connect the laptop to an external monitor or TV.
If the issue persists on the external monitor, it may be an issue with the video card (GPU) or video settings and not the laptop LCD panel. Go to verify display or video issues in Windows Safe Mode. Otherwise, go to the next step.
Performance issues may occur if there is any damage to the LCD screen. The display may stop working, work intermittently, flicker, display horizontal or vertical lines, and so on, if there is damage to the display screen.
If you notice a physical damage, contact Dell Technical Support to learn more about repair options that are available in your region. If there is no damage, go to the next step.
Dell laptops have integrated diagnostic tools that can determine if the screen abnormality is an inherent problem with the LCD screen of the Dell laptop or with the video card (GPU) and computer settings.
When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry images, horizontal or vertical lines, color fade, running a diagnostic test on the LCD helps identify if the issue is with the LCD panel.
Press and hold the D key and turn on the computer to enter the LCD built-in self-test (BIST) mode. Continue to hold the D key until you see the entire screen change colors.
If you do not detect any screen abnormalities in the integrated self-test mode, the LCD panel of the laptop is functioning properly. Go to the Update the video card (GPU) driver, monitor driver, and BIOS section.
If you notice any abnormalities in the LCD built-in self-test mode, contact Dell Technical Support to learn more about repair options that are available in your region.
Windows Safe Mode does not load any drivers, startup applications, third-party services. This will help us identify if the issue is related to the operating system, video settings, device drivers, or third-party software. To learn how to boot your computer into Safe Mode, see the Dell knowledge base article below based on the operating system that is installed on the computer:
Windows updates can support your Windows operating system in many ways. Windows updates can solve specific problems, provide security patches and protection from malicious attacks, or even add new features to the operating system.
Display settings like brightness, refresh rate, resolution, and power management may affect the performance of the LCD screen on your Dell laptop. Changing or adjusting the display settings can help resolve several types of video issues.
NOTE: Depending on the model of the Dell laptop, the shortcut keys to adjust or change the brightness may differ. See the User Guide or User Manual of your Dell laptop for model-specific information.
If you find that the Dell laptop is unresponsive to touch, touch stops working entirely, or other touch-related issues, you can try some common troubleshooting steps to help fix the touch-related issue.
Stress Test can thoroughly diagnose the video card (GPU) on your computer and report any potential hardware problem. Running a stress test on your computer can verify if the hardware components are stable and thus reliable.
System Restore is an integrated Windows tool that is designed to protect and repair the operating system. When something goes wrong with your computer, System Restore must be used before you try to restore the operating system to factory default settings.
If the diagnostic tests on the LCD panel and the video card (GPU) passed, it is most definitely an issue that is related to software that is installed on the computer. If the above troubleshooting steps did not resolve the issue, you may try to restore the computer to factory default settings as a last resort.
WARNING: Restoring or resetting the computer to factory default settings will erase all personal data on the computer. Back up all important data like documents, images, music files, spreadsheets, videos to an external hard drive or a cloud-based backup like Microsoft OneDrive.
Dell computers are built with a small amount of hard disk space that is reserved for reinstalling the operating system. This method is the easiest way to restore the computer to factory condition. The restoration process deletes all user data from the computer, so be sure to back up all your files before starting this process.

We have a lot of different supplyers. The latest batch of iphone 4s LCD"s all have this problem. Iphone5/5s/6(+)/6s(+) are all fine. We are now testing all the LCD"s out of the batch. All have the dark lines. It looks fine at first. But when you get a pop-up or get the shutdown screen, that is when you see the dark lines.
We repair in an ESD space, having ESD wristbands and heelbands. We are testing the lcd"s using a disassembled iphone. So this issue (we have here) has nothing to do with the metal plate.
One of the people here said something about static getting in the screen when they get referbrished. But is there any way to get this charge out? Someone told us to put the connectors on the table so it could discharge. But this does exactly nothing. Does anyone have a solution?
And what i found is; White lines mean it"s not properly connected or the flex is damaged. This is a different problem then the dark lines i was talking about. Stripes (more then 3) are also a result of a bad connection.

- If the bulbs are out behind the display, then all the rows and colunms do work on the Audi/VW/Seat instrument cluster"s LCD display, but the background light of the LCD display is uneven, or some cases the display is completely dark. This case no need to repair the pixels, you do not need a silver cable, nor a new LCD display of the instrument cluster. This case you just need to buy the lightbulbs that provide light behind the Audi/VW/Seat LCD display.
- If the Audi/VW/Seat instrument cluster"s LCD display has really pixel problems, then typically lines or colunms of the display are missing. Several cases the characters are broken, numbers and letters shown on the instrument cluster"s display are unreadable - the backlight is even. In case of a real pixel problem, when one or more pixels are missing from the display, you need to buy a silver ribbon cable or some cases a complete Audi/VW/Seat LCD display. It really depends on that if it is a BMW, a Mercede and Audi, Saab, VW or other make, and of course if it a MID display, a speedometer, a board computer or other LCD dipslay. Most cases, when you have a pixel failure, and you decide to repair it, it"s really worth to buy a set of bulbs too, as bulbs tend to go out during repair - this is due to the massive mechanical shocks experienced during the pixel repair procedure.
Well, most of the Audi/VW/Seat pixel repair KITs we sell are designed to be simple and easy to use. The word easy should now be the subject of further discussion. An average Audi/VW/Seat instrument cluster"s LCD pixel repair is far more difficult then replacing a lightbulb. You definitely have to have good mechnical skills, and some household tools, such as nippers, screewdrivers, household tape, and other goodies to fix things around the house.
If you have to ask one of these questions, then you definitly should NOT do an Audi/VW/Seat instrument cluster"s LCD display pixel repair at home (we were asked these questions before, this is not a joke):
Well, Pixelfix is an internationally registered trademark. Pixelfix only sells the highest quality Audi/VW/Seat speedometer LCD display silver ribbon cables, that are capable of lifetime operation. We sell most of our repairs with lifetime warranty, and you will find the exact same displays, cables, and other spare parts that we use for professional repairs. The silver ribbon cables we use for Audi, VW, A6, TT, A3, A4, Passat LCD display pixel repair are real silver, which is a very expensive base material, that is why the price is much higher compared to carbon ribbon cables.
You may keep an eye on your package, if you ordered the Audi/VW/Seat speedometer LCD display silver ribbon cable with postal delivery on you may check the status on your local post office"s website, or if you ordered next day deliver then you need to see TNT / FedEx or DHL tracking site for status.
All Audi/VW/Seat instrument cluster"s LCD displays, silver ribbon cables, speedometer spare parts bought in the webshop will come with an invoice. All invoices are issued electronically, so you will receive an e-mail with the printable invoice in it. This invoce can be printed and filed to the accounts.
No worries, we do provide technical support, and help repairing of the Audi/VW/Seat instrument cluster"s LCD display. However there is an advice you ought to consider before starting the work. If you have not repaired Audi/VW/Seat instrument cluster"s LCD display before, this is mandatory. PLEASE read the manual, and if available watch the video BEFORE starting the work. This will definitely save a lot of time and will help to do a hassle free work.
No worries, this symptom can be due to a bagatel problem which can be fixed easily. If there are no pixels on the Audi/VW/Seat instrument cluster"s display at all, that MUST be due to one of the followings:
- the contacts of the Audi/VW/Seat LCD display or the panel are not perfectly clean - this case there is no contact between the Audi/VW/Seat LCD display and the panel
- the alignment of the silver ribbon cable is no good, so the pads of the silver ribbon cable do not match the pads of the Audi/VW/Seat LCD display or panel.
Let"s talk about the worst case scenario, you started the repair, but you do not seem to deal with the repair of the Audi/VW/Seat instrument cluster"s display. This case we have a backup solution. We always stand behind our customers, so you may send the Audi/VW/Seat LCD display unit to us for repair, and no matter what the condition of the unit is, we can help. More precisely, up to this point we always succeeded, meaning none of our customers managed to do such a damage in the unit that we could not fix. The repair does not cost a fortune, in a lucky case it is 20-30 Euro plus return delivery cost only.
Ms.Josey
Ms.Josey