As shown in Samsung’s aftermarket OLED screen QC test video (test model Samsung Galaxy S21). Touch functions, color saturation, and more testing are all perfect, but it has a shadow that shows in white and green color screen tests. Even if that shadow is barely visible and will not be affected by daily use. Unfortunately, this screen still cannot pass our rigorous QC test.
As a representative of high-end after-sales quality, hsylcd always maintains strict QC, and each product will undergo a series of tests before delivery to provide you with worry-free after-sales service.
In the aftermarket of Apple mobile phones, the quality of repair parts varies, and some businesses sell other grades of parts under the banner of original parts. How to distinguish the quality of Apple mobile phone repair accessories has become a topic of concern in the industry. Among them, the quality of original disassembled parts is the best, and the quality of raw materials OEM is the most cost-effective. The following will introduce to you how the quality levels of repair gadgets in the Apple after-sales market are divided, so that you can choose the Apple mobile phone repair gadgets that suit you.
Original Tear-Down
The disassembled parts are the parts that are taken out from the brand new iPhone. They are 100% original and authentic, and the price is cheaper than the retail parts of the counter. They should be the most cost-effective authentic parts. Why can disassemble parts be so cheap? Because the price of disassembled accessories is determined by cost and market supply and demand, and the official website accessories are determined by Apple. Where did the original disassembled parts come from? Most of the disassembled parts come from second-hand Apple mobile phones. There is a complete industrial chain in the Huaqiangbei market. The recycled second-hand Apple mobile phones are removed from original parts and sold separately. The original parts of the disassembled machine rarely have quality problems, and the market acceptance is high.
Original defective product
The brand-new original accessories are almost irrelevant to the refurbished phone. If these original Apple mobile phone spare parts are very cheap, the refurbished phone market will be informed that users can directly assemble a new Apple phone. It is claimed that most of the brand new original Apple mobile phone accessories come from the Apple mobile phone assembly factory. This part of the original accessories is actually defective products of the assembly factory. After simple repairs, these defective products flow into the after-sales market as brand new products.
OEM quality
OEM quality uses raw materials to manufacture, the product quality is close to the original, and the price is much cheaper than the original. OEM quality Apple mobile phone repair parts are widely used in mobile phone repair shops, and its high price has been recognized by users and mobile phone repair shops.
Assembly accessories
The only difference between assembly parts and OEM quality is whether they are designed and manufactured using raw materials. The quality of assembly parts is close to OEM quality, but the yield rate is lower than OEM quality. The advantage of assembly accessories is the low price, and many Apple refurbished phones use assembly accessories.
2021 has just begun, and the price increase of the consumer electronics industry chain has already arrived. The price increase may be the main theme of this year’s mobile phone accessories, especially iPhone mobile phone accessories. Due to the impact of the new crown epidemic on the entire semiconductor and chip industry, the output of upstream wafer manufacturers is insufficient, and the production capacity of display driver ICs is slowly climbing, which eventually leads to short supply. In 2021, the price of Apple’s mobile phone LCD screen will increase by 20%~30%, and the price is still increasing. Why does the price of Apple’s mobile phone screen assembly continue to increase?
1. iPhone12 is selling well globally
In 2020, due to the epidemic, the iPhone 12 series was postponed to October, but now it only took more than two months to make it into the TOP 10 global mobile phone sales. The iPhone 12 is even the top three on the list. We can probably foresee that in the next year, the iPhone 12 is very likely to be like last year’s iPhone 11, while everyone is crazy about it, while still harvesting the major mobile phone sales charts.
According to data released by Gartner, a market research organization, Apple shipped nearly 80 million mobile phones in the fourth quarter of 2020, surpassing Samsung and becoming the global smartphone sales champion.
2. Market inventory cannot meet market demand
At the end of 2020, many stock dealers and manufacturers of mobile phone accessories will sell Apple screen assemblies at very low prices in order to cash out at the end of the year. The inventory in 2021 can no longer meet the demand for orders in the market, and continuous price increases have become a reality.
3. Small-size LCD is out of stock and the price increases by 20%~50%
LCD prices have risen for four consecutive months. In the COVID-19 epidemic, consumer demand has been stimulated. Mobile phones, laptops, and tablets have become essential tools for home office work. In terms of product types, low-end LCD screen products have a larger increase, about 20%-30% or even 40%-50%.
4.the display driver IC is out of stock and the price is increased by 100%
The demand for driver ICs began to rise significantly in the second half of 2020. In the fourth quarter of 2020, news of out-of-stocks had begun and suppliers began to increase their quotations. The increase ranged from 10 to 20% until the first quarter of 2021. The situation has not improved in the first quarter, and the supply of driver ICs is still quite tight.
According to the supply chain, since foundries and packaging and testing plants are still increasing their driver IC production and packaging and testing quotations in 2021, driver ICs are currently coordinating product price increases with customers in order to reflect the problem of rising costs. , Customers have also agreed to raise their quotations one after another, and they have the fastest chance to start the increase in the second quarter.
5. Price increase of passive components
According to statistics, recently Yageo, Huaxinke, Housheng, Rubycon, etc. have issued price increase notices or expressed the possibility of price increase. The price increase time will be concentrated on March 1st and after, or promote this round of passive component price increase. the elements of. The price of passive components increased by 10% to 25%.
The price increase of the iPhone LCD after-sales screen is caused by the price increase of various raw materials and the lack of stock in the market. The price increase of the mobile phone screen assembly has lasted for at least half a year, and the production capacity of display driver ICs cannot meet market demand in a short period of time. There will be the largest chip shortage in history in 2021, which will affect all electronics industries.
OLED screen and LCD screen are two different screens currently used for iPhone. The main difference between the two comes from the difference in luminous methods.
The LCD screen relies on backlit board to emit light. It needs to install red, green and blue filters in front of white backlight, separate them with liquid crystal layers, and then add polarizer and glass substrate. The whole is thicker, about 0.6-0.8mm;
The OLED screen uses organic compounds. When the current passes through, the sub-pixels can emit red, green, and blue light by themselves. No additional backlit board and filters need to be added, and no liquid crystal layer is required, only one polarization layer is needed, and the thickness can reach 0.3mm.
Color Display
The OLED screen can control the color at the pixel level, so the color accuracy is almost perfect and can hardly be distinguished by the naked eye. Since 100% black can be expressed by extinguishing pixel points, in theory, OLED screen has almost infinite contrast; The latest iPhone 11 Pro series has a screen brightness of 800 nits, ensuring that the screen content can be clearly displayed even in the noon sun.
Since the color brightness of LCD screen can only be adjusted by backlit board, and the liquid crystal deflection cannot achieve 100% shading, there are some errors in the color expression of each pixel, so the accuracy, the contrast is slightly lower.
Dynamic Display
OLED has a faster switching speed than LCD (the time required for each pixel to completely change the color), and the best LCD display can completely switch the color within a few milliseconds (QIANFENZHIYI seconds), however, the best OLED display only needs a few microseconds (one millionth of a second) to completely switch colors. When playing games or playing dynamic video content, the probability of content blurring or trailing is smaller.
Energy saving
When pixels are not expressed (such as black), OLED can directly cut off the power supply of corresponding pixels, effectively saving electricity. The LCD screen can only save energy by lowering the overall brightness of the screen, and the energy saving efficiency is relatively low.
Stroboscope
The strobe problem mainly lies in the difference between the two screen dimming methods.
If you need to reduce the brightness of the LCD screen, you only need to directly adjust the brightness of backlit board, so you can easily realize global DC dimming (DC dimming refers to adjusting the screen voltage or current, that is, to change the power to control the display brightness).
Since the OLED screen does not have backlit board, when changing the display brightness, if the power is directly adjusted, problems such as uneven color and inaccurate color rendering will occur under low brightness. In this case, many manufacturers begin to apply PWM dimming on OLED screens.
PWM dimming can achieve continuous display effect by controlling the screen to flicker alternately at a certain frequency without changing the power. Simply put, PWM dimming is the continuous alternation of brightness, extinction, brightness and extinction. The slower the flicker frequency, the lower the actual brightness. This also causes the problem of stroboscope in PWM dimming.
A study by the International Institute of Electrical and Electronic Engineers (IEEE) shows that the stroboscope with low impact on human health should be above 1250Hz; Those that basically do not affect human health should be above 3000Hz at least.
At present, the stroboscope of LCD screen is above 1000Hz, while the stroboscope rate of OLED screen mobile phone adopting PWM dimming technology is about 200Hz ~ 250Hz. As the brightness of the screen decreases, the stroboscope rate will also decrease. Therefore, in the case of low brightness display, OLED is more likely to cause eye fatigue than LCD.
Screen burning
Because OLED requires each pixel to emit light by itself, and different color pixels have different luminous life due to different materials. If a region displays a high light source for a long time, the pixels in the region will age faster than the surrounding pixels, just as the electric lamp will break down after being used for a long time, these pixels will also age faster, resulting in branding in this area.
The problem of screen burning is an unavoidable problem for OLED screens. Apple has joined the anti-screen burning mechanism since iOS11. Media tests show that, iPhone X the screen will not burn until 510 hours after a picture is continuously displayed at the highest brightness. The “Dark Mode” added to iOS 13 is not only to extend the battery life of the mobile phone, but also to avoid screen burning.
For LCD screen, the risk of “burning screen” can be ignored.
In the market, there are a lot of confusions between LCD, TFT, IPS and OLED. Of course, all of them are displays.
LCD stands for Liquid Crystal Displays (In market, LCD defaults to “Passive Matrix LCD”), TFT stands for Thin Film Transistor (In market, TFT defaults to “Active-Matrix TN type TFT LCD), IPS stands for In-Plane Switching (In market, IPS defaults to “High End Full Color LCD), LED stands for Light Emitting Diode (In market, LED TV actually is a TFT TV but with LED backlights. It is not LED displays!) OLED stands for Organic Light Emitting Diode. It is a display but not an LCD shown above.
Why did LCD prices continue to rise for 4 months?
The key factor is the imbalance of supply and demand structure
Since May of this year, LCD prices have continued to rise. According to the research and analysis of “International Electronic Business”, the key factor is the imbalance of supply and demand structure.
1. The epidemic has stimulated the consumer side, and LCD TV panels have risen the most rapidly. After China resumed work production, demand in the traditional home appliance market increased and LCD production capacity was quickly digested. TVs alone consumed more than 80% of LCD production capacity. However, due to the suspension of most factories during the epidemic, LCD production capacity was limited, which resulted in insufficient LCD capacity in the face of market outbreaks The production capacity of the company eventually led to continuous shortages in the market and price increases.
2. The industrial development has been adjusted back, and planning has begun at the end of last year. In fact, the last round of LCD price increase cycle was from 2016 to 2017. Since 2018, the overall market price has continued to decline. Even in 2019, individual types have fallen below the cost of materials. The industry has generally experienced profit losses and returned to reasonable price range is what the industry expects.
3. Production capacity of Japanese and Korean companies exited and supply imbalance. The continuous decline in LCD market prices from 2018 to 2019 is due to the influx of a large number of local manufacturers, which doubled the global LCD panel production capacity in a few years, but there is no suitable application market to digest. In this context, the 2020 epidemic is superimposed As a result, the operating burden of LCD companies in Japan and South Korea has further increased, and it is difficult to make profits in LCD panel production, so they have to announce their withdrawal from the LCD panel business.
What is the trend of LCD supply in the mobile phone aftermarket?
At present, the domestic glass raw materials on the market are concentrated in the production of large-size LCD TVs and flat-panel screens. The shortage of raw materials such as glass ICs in the smart phone market is becoming more and more serious. This situation is expected to continue until the end of this year.
Also due to the epidemic, a large number of original glass was forced to stay in Hong Kong. It is said that Hong Kong will not clear customs until December at the earliest. If customs clearance goes smoothly, a lot of glass will be imported into mainland China, but because of the instability of the epidemic and the special geographical location of Hong Kong has delayed the customs clearance date many times, so it is still holding a wait-and-see attitude.
Now that the supply is getting tighter, the original and original quality LCDs of all brands will also face a shortage of glass in the next two months. It is expected that the prices of some products will soar from November.
★ Recognized by European Phone Repair Shops D-4 Screen Replacement for iPhone 6-8P
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ERP Code
Description
Technique
Quality level
With Logo
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Color
Price Trends within 7days
1112646
Parts I LCDI For iPhone I7 Plus
TFT
DS+
N
BLK
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1112650
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TFT
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N
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1112642
Parts I LCDI For iPhone I6 Plus
TFT
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D-4 Screen Replacement for iPhone 6-8P
Quality Classification: DS
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ERP Code
Description
Technique
Quality level
With Logo
or Not
Color
Price Trends within 7days
1112654
Parts I LCDI For iPhone 6
TFT
DS
N
BLK
3%↑
1112656
Parts I LCDI For iPhone 6s
TFT
DS
N
BLK
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1112658
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1112660
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Ango Display for iPhone 6-8P
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ERP Code
Description
Technique
Quality level
With Logo
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Price Trends
1326610
Parts I LCDI For iPhone 8 Plus
TFT
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1326606
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TFT
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1326604
Parts I LCDI For iPhone 6 Plus
TFT
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WHI
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D-4 Screen Replacement for iPhone 6-8P
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ERP Code
Description
Technique
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1112677
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DA
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1112674
Parts I LCDI For iPhone 6s
TFT
DA
N
WHI
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1112671
Parts I LCDI For iPhone 6
TFT
DA
N
BLK
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1112717
Parts I LCDI For iPhone 5
TFT
DA
N
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