1. Methods for repairing mobile phone screens



1. Replace the outer screen (press screen) using equipment



Screen pressing is a common method for repairing broken mobile phone screens, primarily targeting repairs to the outer glass layer of the screen. Since it involves repairing the outer screen, the inner screen of your phone must be intact before this method can be applied. Screen pressing involves reattaching the new outer glass layer and display layer together, and then using professional equipment to press them together, ensuring they are tightly combined. The advantage of this method is that the repair cost is relatively low, and once repaired, it will not affect other functions of the phone.




However, it should be noted that screen pressing requires professional equipment and technology, which cannot be operated by ordinary repair shops, and it is also impossible to press the screen by oneself.





2. Replace the entire screen



If our phone screen is severely damaged and the internal screen is already damaged (screen display is abnormal, screen leakage, lines, black screen), then we need to consider replacing the screen.



Screen replacement is the process of removing the entire screen and replacing it with a new one. The advantage of this method is that it can completely solve the problem, but the price of the original screen is relatively high, and reliable repairers need to be found to ensure the quality of the screen.



2、 The price for changing the screen

The price of screen replacement varies depending on the brand, model, and repair method. Generally speaking, if only the external screen is damaged, we only need to find a professional repair shop to replace the external screen.
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If the internal screen is damaged, replacing the original screen may be more expensive. If you have high requirements, you can directly replace it with an original screen assembly. If the requirements are not very high, you can replace it with a brand screen assembly. If it is only a spare machine or just wants to export data, you can directly replace it with an assembled screen.





In addition, it is recommended to choose to have your phone screen repaired in store or by mail. Some home repair and screen replacement services often use an assembled screen to replace your original screen, especially if your phone only has a broken external screen. When replacing a phone screen, don't just look at the price. The price of replacing the external screen is closely related to the repair techniques of the technician. Some cheap repair shops have many tricks for replacing the external screen, such as not bearing the risk of the internal screen, which will ultimately lead to the price of repairing the screen increasing several times. The same goes for replacing the screen assembly. There are assembled screens, branded screens, press fit screens, face change screens, original disassembled screens, original touch screen replacement, screen replacement, and so on in the market. Anyway, remember that you get what you pay for. When repairing a screen, try to go to a store that only does repairs. For those who are not familiar with screens, please contact me. We can provide wholesale and after-sales services for various screens。Tina WhatsApp:+86 13824303378





In summary, if your phone screen is damaged and only the external screen is broken, we only need to replace the external screen. If the internal screen is damaged, we need to replace the entire screen assembly. We can choose the appropriate repair method according to our own situation. At the same time, when choosing a repair shop, it is necessary to choose a reliable merchant to ensure the quality and effectiveness of the repair.

1、 What is OLED flexible straight screen?



To understand the difference between the two, one must first clarify what OLED is. Simply put, OLED uses a very thin organic material coating, which can achieve self illumination without the need for backlighting. It can be understood as OLED being composed of countless "small light bulbs". But whether it's a flexible screen or a hard screen, the materials used are the same. The main difference between them is the substrate material, which is the material supporting the OLED.



Flexible screens generally use PI and other flexible materials as substrate materials

Hard screens generally use hard materials such as glass as substrate materials



What exactly is a flexible straight screen? To put it bluntly, it's just about installing OLED flexible screens into straight screen phones.





2、 What are the benefits of using a flexible straight screen?



1. Due to the use of flexible materials as substrates, flexible screens have thinner screen thickness and lighter weight, which reduces the overall thickness, size, and weight of the phone. The thickness of mobile phones with large batteries/ultra fast charging like the K50 series is extremely terrifying, and using a hard screen will make the feel even more uncomfortable.



2. Due to its softness, flexible screens will have greater improvements in screen packaging technology. The use of COP packaging technology can make the black edge of the phone chin smaller, resulting in a better phone experience.



3. Flexible screens have a soft constitution, which can better protect the screen in the event of a phone falling or bending. In the event of damage to the external screen, a flexible screen can provide greater protection from the impact.

On Samsung OLED screens, rainbow patterns may appear on hard screens. However, many netizens have found that Samsung's flexible screen does not have this problem. This can also be considered a special place.





3、 Why didn't straight screen phones use flexible screens in the beginning?



To put it simply, it's still a matter of cost. In the past few years, the cost price of flexible screens was several times higher than that of hard screens, and COP packaging technology is also a high cost and low yield technology. In this way, the cost price will rise sharply.

Summary: The difference between mobile OLED flexible screens and hard screens lies in the substrate material used for the screen. And the flexible straight screen is actually to put the flexible screen into a straight screen phone for use. Flexible screens have thinner thickness, lighter weight, and better drop resistance. When choosing a mobile phone, it is better to choose a flexible screen.

011. Analysis of Mobile Screen Technology
1.1 Overview of LCD and OLED
LCD relies on external light sources, while OLED can emit light on its own; The two principles are fundamentally different.
1.2 LCD Screen Technology
LCD screen, also known as Liquid Crystal Display, has become a mature technology after a long period of development and is widely used in various types of mobile phone screens. At present, screen technologies such as TFT, IPS, and SLCD can all be classified as LCD screens. Among them, TFT, as a general term for LCD panels, was once the mainstream of early LCD screens. Although its display effect was mediocre, its cost was low, so it was still adopted by many low-end models.IPS screens, often referred to as "SuperTFT" in the industry, are an upgraded form of LCD screens that essentially still belong to the category of TFT screens. Compared to ordinary TFT screens, IPS screens have a more transparent display effect, bright colors, and a wider viewing angle, reportedly even reaching a viewing angle range of nearly 180 °. SLCD, also known as "Super LCD", belongs to a higher level of LCD screen technology, and its excellent display effect and good color reproduction ability have won widespread praise.
1.3 OLED Display Technology
Compared with LCD screens, the biggest feature of OLED screens is the self luminous display technology of pixels, which makes OLED screens more outstanding in display effects and become the mainstream direction of future screen technology development. At present, AMOLED screens dominate the OLED field, and Samsung, as a leader in mastering core technologies, has achieved increasingly accurate color reproduction in its products, with significant improvements in color cast compared to earlier products. Super AMOLED， As an important product of Samsung in the OLED display market, it is widely praised for its high color saturation and vivid display effects, especially in terms of color performance. Samsung's Super AMOLED screen is considered a leader in the industry.
1.4 [Introduction to 120Hz Flow Rate Screen]
Recently, mobile phone manufacturers have launched 120Hz streaming screens, which brings us a brand new visual experience through technological innovation. The flow rate screen, with its high refresh rate of 120Hz, significantly surpasses the refresh rate of traditional 60Hz mobile phone screens. In fact, the refresh rate of 120Hz flow rate screens has been improved, and optimized circuit components have been used to achieve higher screen refresh rates.

In fact, the perception ability of the human eye is often misled. For example, the common 24FPS frame rate in movies, which plays 24 frames per second, sacrifices 1/24 of a second of motion detail despite the use of motion blur technology to make the images appear coherent. This trade-off may be acceptable for movies, but in games, each frame is a static image rendered in real-time. If it is still presented at 24 frames per second, it will result in disjointed actions. The high refresh rate of the flow screen helps to improve the performance of dynamic images, bringing users a smoother visual experience.

Overall, mobile screen technology is developing towards higher refresh rates and better display effects. LCD occupies a place in the market with its mature technology and diversity, while OLED is gradually becoming mainstream with its excellent display effects and self luminous advantages. With the continuous innovation of technology, future mobile phone screens will definitely bring us more surprises and better user experience

1. Film application


If the phone screen is shattered without debris falling off, and the inner screen is intact, with only the outer screen damaged, it is possible to replace a non-transparent tempered film instead of repairing it. This film can cover the cracks on the outer screen of the phone screen and allow normal use. Such films are available online at a reasonable price.



II. Repair by mail



If the outer screen of a mobile phone is damaged but the inner screen is not, you can seek out repair services on online e-commerce platforms such as Taobao and Pinduoduo, and then mail the phone to the service provider for repair. This is relatively cost-effective, but the disadvantage is that the service provider may easily replace other parts or the entire phone. It is recommended to choose a shop with good reviews for repair by mail.



III. Offline maintenance



If the outer screen of the phone is severely damaged, with debris falling off, and the inner screen is also damaged, the only option is to replace the entire screen. You can go to a familiar offline repair shop for the replacement. Before going, search online for the price of a screen compatible with your phone, and then bargain. You can bargain in offline repairs, otherwise you may easily be ripped off.





IV. After-sales replacement



If you are not confident about replacing through other channels, you can directly call the official after-sales service phone number to obtain the phone number and address of the nearest official after-sales service outlet for replacement. It is important to note that after-sales service typically only provides replacements and does not offer repairs, and the prices are relatively high. If you do not mind whether it is an original screen or not, it is not recommended to replace it through after-sales service, unless it is free of charge.



Conclusion: The price of replacing a mobile phone screen varies based on different channels, and the cost and difficulty of replacement differ depending on the extent of screen damage. The four channels and methods mentioned in the article are listed in ascending order of cost. Users can choose the repair method that suits them best according to their actual situation.



In addition, it's worth noting that if your phone has been in use for a long time, replacing the screen may not be advisable. Moreover, some special types of screens, such as curved screens, can be particularly expensive. The repair cost can account for more than 30% of the price of a new model, making it unnecessary to repair.

1. Principle: Previously, it was written that screen brightness is directly proportional to (ELVDD-data). ELVDD is typically fixed at 4.6V, which means it is directly proportional to (4.6V-data). What is data? Actually, data refers to the voltage corresponding to the displayed grayscale level, or in simpler terms, the content displayed on the screen.





2. Causes of vertical lines: The screen writes the "voltage corresponding to the screen display content" into the backplane row by row. The grayscale data voltage corresponding to these pixels in the "column direction" all enter through a common "line in the column direction".



2-1) If there is a problem with this line in the column direction, the data voltage for the entire column cannot be written or the written voltage is relatively low, resulting in a corresponding bright line (ELVDD-data).



2-2) This charging line in the column direction is driven by the chip, passing through the bending area on the panel, and then reaching the pixel area on the panel. Any issues with these three sections may cause the appearance of bright lines.



2-3) It refers to the "corrosion" phenomenon observed during the repair of a mobile phone by a netizen. This corrosion occurs on this specific circuit path.



2-4) Many users operate their phones in harsh environments, such as high humidity and high temperature areas, where this issue is relatively more prevalent. Of course, poor waterproofing of some screens is also a factor to consider.



3. Solutions



3-1) The repair experts have also devised two repair methods: heating with a hair dryer or lighter, or striking with static electricity. This method is not recommended, as it is only suitable for cases where the corrosion is not completely thorough. It involves a greater element of chance, and there is a high risk of recurrence in the future, so there is no need to spend this unnecessary money.



3-2) The correct approach: Contact the official after-sales service and provide proof of purchase or similar documentation. All phones come with a warranty period, and responsible manufacturers will offer free screen replacement services, even beyond the warranty period. Some manufacturers may charge a fee, but the screen replacement is definitely more reliable than the above method of taking a chance on repairs.