You might not realize it, but your phone screen has an "expiration date" just like food. With thousands of swipes every day, your screen is quietly aging.

A brand-new phone screen feels smooth as silk, but over time it becomes sticky and sluggish. This happens because:

• The oleophobic coating gradually wears off
• AMOLED screens may develop burn-in
• Touch responsiveness slows down

To extend your screen's lifespan:

✓ Clean with a soft microfiber cloth
✓ Avoid using your nails on the screen
✓ Don't use at maximum brightness for extended periods
✓ Keep away from high-temperature environments

How long have you been using your current screen? Maybe it's time to start taking better care of it!

The difference between the two



1. Thickness: LCD screens are thick and hard, and cannot be bent; OLED screens can be bent, making them softer and thinner. From a structural perspective, AMOLED thickness can be nearly 30% thinner than LCD.





2. Price: Due to the mature technology of LCD, LCD is cheaper in terms of price.



3. Service life: LCD screens use inorganic materials, while OLED screens use organic materials. OLED screens have a shorter service life than LCD screens.



4. Color expression: LCD emits light through backlight refraction, so when displaying black, there may be light leakage and whitening around the screen, making black more similar to gray. OLED can express colors through self emission, resulting in a more vivid and full display effect, but there is a risk of screen burn-in.

(Representation of Black)



5. Energy consumption: The luminous principle of LCD is that the color filter film will cause a decrease in light efficiency. Some analyses suggest that the utilization rate of LCD for backlight brightness will not exceed 15%, and 85% of energy is wasted. Therefore, OLED is more energy-efficient than LCD.



LCD is never a slave



OLED screens are often referred to as "blind screens" due to the issue of screen flicker. When adjusting screen brightness, OLED screens use PWM dimming, which is commonly understood as turning on and off every second to control brightness. The brightness is adjusted by the proportion of screen on/off time within the interval.



As long as I light up and turn off quickly enough, my brain cannot feel that I am rapidly switching between light and light states. For some people who are sensitive to screen flicker, PWM dimming is particularly unfriendly to their eyes at low brightness, especially at night, which is why some people may feel obvious eye pain and soreness when using their phones at night.



However, many manufacturers later introduced DC modulation to solve the problem of screen flicker, but with it came the problems of screen burn-in and uneven brightness.



LCD enthusiasts are shouting: LCD will never be enslaved, because of the fatal problem of OLED screen flicker.

(Screen flicker display under camera, image sourced from the internet)



future trends



Although OLED has screen flicker issues, in daily use, the human eye cannot clearly perceive it. Only those who are very sensitive to screen flicker will truly feel discomfort.



OLED with greater power than excess has more advantages, such as better contrast, better black performance, wider color gamut, lighter, thinner, bendable, and so on. That's why mainstream flagship phones now choose OLED screens.

In the future, the development trend of mobile phones will also move towards full screen, curved/foldable screens, and under screen fingerprint and under screen cameras, and the position of OLED will not be shaken. LCD screens will be more commonly used in mid to low end smartphones due to their low cost and mature technology.



So, whether to choose LCD screen or OLED screen, Haoge has summarized their respective advantages and disadvantages for everyone. If you are particularly sensitive to screen flicker, it is recommended to choose LCD. In addition, choosing OLED screen can bring a better visual 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.

Deconstruction of mobile phone screen

Today's smartphones are generally composed of four layers, from top to bottom: cover glass, touch sensor, front panel, and back panel.

Cover glass helps protect devices such as mobile phone touch sensors;

Touch sensors, as the name suggests, are created to assist mobile phone users in operating the phone screen through touch;

The front panel can be equipped with a filter to generate various images that appear on the phone screen;

The backplane plays a crucial role in the mobile phone screen, as it is covered with millions of thin-film transistors;




How to determine whether the inner or outer screen is damaged?

When we use our mobile phones, unfortunately, the screen may get damaged. Generally, there are two scenarios. One is that the outer screen is damaged, and the other is that both the inner and outer screens are damaged. To avoid being ripped off, we must be clear about the condition of our mobile phone, whether it's just the outer screen that's damaged or both the inner and outer screens are damaged.

① Touch: When performing touch operations on the phone, the screen sometimes responds sluggishly;

② Observation: We can conduct observation with the naked eye to detect whether there are issues such as color blocks or water ripples displayed on the phone screen;

In other words, if the touch is insensitive and there is no image displayed on the screen, it indicates that the outer screen is damaged; whereas if the touch is normal but there are issues such as color blocks or water ripples on the screen, it indicates that the inner screen is damaged.



Outer screen damage and inner screen damage

Having known the status of your phone's screen, how to determine which of the inner and outer screens is damaged, and whether to replace only part or the whole? Generally, the price won't be too expensive, and it can also avoid being cheated by unscrupulous merchants. Of course, we can also carry out repairs according to our own situation. Friends with strong practical skills can try it themselves (dismantling is risky, so be cautious). Of course, the most reliable way is to seek professional assistance for repairs.





To avoid the risk of a broken screen on your phone, it's essential to fully protect it with screen protectors, phone cases, tempered films, and other accessories. Friends, if your screen were to crack, how would you handle it? Would you just randomly find a repair shop, or seek after-sales service from the phone manufacturer? When purchasing a phone, do you consider buying screen protector insurance? Why not discuss it together!

Overview of Screen Materials


With the popularity of mobile phone color screens, the choice of screen material has become increasingly crucial. The differences in color screens of mobile phones mainly stem from differences in LCD quality and research and development technology, leading to the emergence of several major screen materials, including TFT, TFD, UFB, STN, and OLED. Usually, the more colors that can be displayed, the more complex images can be presented on the phone, and the levels of the screen are also richer.



TFT-LCD characteristics


TFT-LCD liquid crystal display screen, also known as thin-film transistor type liquid crystal display screen, is known as the "true color" display technology. Its uniqueness lies in equipping each pixel with a semiconductor switch, allowing each pixel to be directly controlled through point pulses, thereby achieving higher reaction speed and color accuracy. Therefore, TFT LCD displays not only have excellent brightness and high contrast, but also have a strong sense of hierarchy and bright colors. Despite its drawbacks of high power consumption and high cost, TFT LCD technology still drives the rapid development of mobile phone color screens. Nowadays, many new generation color screen phones support displays of up to 65536 colors or even 160000 colors, which undoubtedly demonstrates the significant advantages of TFT LCD in color richness and contrast.



IPS Technology Improvement


In addition, IPS technology is also worth mentioning. This technology is not a new screen material, but an improvement of LCD technology developed by Hitachi in Japan. By changing the arrangement of TFT liquid crystal molecules, IPS screens not only have a larger viewing angle, but also almost no ripples appear when pressed, resulting in higher color reproduction and more realistic images. It is worth mentioning that IPS displays perform well in handling highlight issues. After the transistor on a regular display screen burns out, it will produce bright spots, while IPS screens can transform it into dark spots without light, thus avoiding interference during viewing. Therefore, when choosing a screen, IPS screen is undoubtedly a recommended choice.



Advantages of AMOLED


AMOLED， Active Matrix/Organic Light Emitting Diode is an active matrix organic light-emitting diode that has the ability to emit light autonomously. It inherits many advantages of OLED, such as fast response, high contrast, wide viewing angle, and lightweight features. In addition, due to the inherent luminescence of AMOLED, its power consumption is only 60% of that of traditional screens, making it very suitable for use in mobile phone screens. When displaying dark colors, its luminous brightness is low, further saving energy.

At present, Samsung is a leading enterprise in AMOLED technology and holds the core technology. With numerous inherent advantages, AMOLED is expected to dominate the screen market in the future. However, due to production capacity limitations, Samsung is unable to meet the needs of all customers. For example, the iPhone 4 was originally planned to use an AMOLED screen, but ultimately switched to an IPS screen due to insufficient production capacity.



Enhancement of Super AMOLED


On the other hand, Super AMOLED, as an upgraded version of AMOLED, further optimizes the screen structure. It removes the touch sensitive panel in the middle and integrates touch functionality directly onto the AMOLED display layer, making touch more sensitive and color rendering more vibrant. In addition, the design of the native touch panel also improves the transparency of the screen, making the display effect more outstanding. Therefore, Super AMOLED surpasses traditional AMOLED screens in terms of touch sensitivity and display performance.



It is worth mentioning that Super AMOLED technology also incorporates two touch technologies, oncoll and incell. Among them, the oncell technology embeds the touch panel function between the color filter substrate and the polarizing plate, simplifying the production process. Although the production yield of incell technology still needs to be improved, its design concept of directly integrating touch panel functions into LCD pixels undoubtedly brings more possibilities for future screen technology.



Comparison of different materials


Compared with TFT screens, AMOLED has the characteristics of faster response speed, higher contrast, wider viewing angle, and thinner and lighter. In addition, due to the inherent luminescence of AMOLED screens, their power consumption is only 60% of that of TFT screens, making them very suitable for use in mobile phone screens. With the continuous maturity of AMOLED technology, we have reason to believe that it will be widely used in more mobile phones.



In the comparison of various screen materials, STN screen was the main component of early color screens, initially only able to display 256 colors. Although it can display 4096 or even 65536 colors after technological improvements, the common STN screens on the market still mainly use 256 colors. The advantages of STN screens are low cost and low energy consumption.



TFT screens are known for their excellent brightness, contrast, and layering, as well as vibrant colors, but their drawbacks are high power consumption and relatively high cost.



The UFB screen is designed specifically for mobile phones and PDAs, featuring ultra-thin and high brightness, capable of displaying 65536 colors, and a resolution of up to 128 × 160. Its special grating design reduces pixel spacing, thereby improving image quality. The UFB screen combines the advantages of STN and TFT, with lower power consumption than TFT and a price comparable to STN.