Tag: chinese iphone 6 screen

Cheaper or Poorer? An Overview of Chinese iPhone 6 Screens

There is both OEM iPhone LCD screen and China Made ones by far on the market. The latter type of display mainly manufactured by two full-fledged LCD panel vendors which are JDF and LT. Let’s have a look at the two different replacement LCD screens from the aspect of Appearance and Function after our stress testing.

Appearance

1) Size, Thickness and Weight

By measuring up with the micrometer, we can easily find that JDF made screen is thicker than the OEM one and LT because a plastic layer has been added to the phone glass lens. Below is the specific data with regard to the LCD assembly weight, LCD assembly thickness, home button size and cell phone front glass thickness.

Manufacturer OEM JDF LT Weight of the whole screen 31.40g±0.02 35.10g±0.02 34.50g±0.02 Home button size 10.7mm±0.02 10.84mm±0.04 10.72mm±0.04 Thickness of the whole screen 2mm±0.02 2.39mm±0.04 2.37mm±0.04 Thickness of the glass lens 0.8mm±0.04 0.67mm±0.04 (plastic layer 0.19) 0.53mm±0.04

2) Flex Cable

OEM, JDF and LT LCD display and digitizer touch screen flex cables are different in length and textures.

OEM  JDF  LT

3) LCD’s Appearance

When leaning at 15 degrees, you’ll see digitizer touch screen textures both on the LT and JDF LCDs. OEM: None  JDF: Strip  LT: diagonal lines and light spot.

OEM  JDF   LT

4) Structure

Compared with OEM LCD screen, both JDF and LT screens use G+G touch screen display technology. The only difference is that JDF’s touch screen digitizer stick together with LCD (similar to iPhone 4/4s), While the LT is coherent with outer glass lens Below is the specification of their different manufacturing techniques.

LT  JDF Manufacturer OEM JDF LT structure (technique) in-cell G+G: Glass+(touch+LCD) G+G: (Glass+touch)+LCD

Function

1) 3-Proofs

The OEM screen has the characteristics of waterproof, alcohol-proof and n-hexane-proof, while JDF and LT do not.

OEM  JDF  LT

2) Installation

* JDF and LT come with unconformable LCD supporting bezel frame. * JFD and LT’s screen cannot fit together perfectly in the installation. There is a gap between the LCD touch screen assembly and the body. LT is more serious than JDF in this problem. * For some JDF screens, if you first connect the LCD flex cable to the logic board then try to power on the phone, the screen can not light properly; if you start up the phone first then connect the flex ribbon cable, it can display normally.

3) Display

Clear color difference. The LCD display color of the JDF, LT and OEM LCD differs greatly. For LT and JDF, you can see obvious color changes from different angles. While the OEM screen always keeps the same color.

* Some JDF and LT screens have issues of backlight leakage and shadow. * Installed with the OEM Metal LCD Back Plate, some of the JDF’s screens will have a large area of backlight leakage in the LCD display area, because of the asymmetrical bezel frame and the LCD thickness. 4) Touch Functionality Both JDF and LT screens have possible issues of touch insensitive and screen splash. At the aging test, some screens will be more serious when the temperature reaches 35℃ above.

Through a series of testing and analysis, REWA suggests that the new China-made iPhone 6 screens are unstable and can not up to our inspection standard at present . We will keep watching and testing until these problems are properly improved. If you are looking for cost-effective screens, please contact us and any concerns or questions will be warmly welcome. Want to order our products? Please contact us:

PRE-SALES Skype: rewatech

Email: service@rewa.tech

AFTER-SALES Skype: support-rewatech

Email: support@rewatechnology.com

July 10, 2016
Which is the most cost-effective China made iPhone 6 LCD?

LT(IVO)

There are several display panel manufacturers in mainland China of which JDF(BOE) and TM(Tianma) stand out noticeably. JDF has gradually transformed its 6th production line into small-to-medium-size displays since 2014 and now JDF proceeds this plan and concentrates production capacity in this field in an all-around way.

As a matter of fact, TM(Tianma) has already transformed its display size and capacity altogether in late 2013 in prior of JDF(BOE), focusing on small-to-medium-size displays.

In addition to this, though SC which was vigorously supported by Foxconn had been performing mass production for LTPS, TFT, LCD displays at the beginning of 2012, did not make a great progress for the reason that SC failed to neither win over the Apple iPhone orders and nor get authorization in CG Si and IGZO technology of Sharp.

But do you know which iPhone 6 LCD made by these three display penal manufacturers is more cost-effective? Let’s go on with this article and sort things out. Not too long ago, REWA has analyzed the JDF(BOE) and LT(IVO) China made iPhone 6 LCDs in some ways. After several months’ development, how is the situation now? We have tested 3 mainstream China-made iPhone 6 LCDs by JDF(BOE ), TM(Tianma) and SC from aspects of “Appearance” and “Function” in order to make a comparison with OEM ones and give us clarity of thought.

Appearance

1) Glass Lens

There is no difference between JDF, TM and SC LCDs and OEM ones in appearance.

2) Button Hole Alignment

Through visual inspection we can hardly tell obvious differences among OEM, JDF, TM and SC LCDs.

3) Bezel

None of these three kinds of LCDs have deformations, breakages, looseness or degumming on front LCD Supporting Bezel Frames.

The front bezels of different type match LCD Back Metal Plate very well, it is still hard to tell differences between JDF, TM, SC and OEM ones.

In terms of bezel matching with LCD and touch screen assembly, all these three China made LCDs can be matched perfectly.

After installed in the mobile devices, it’s much easy for us to find that all these three China made LCDs have a small gap between the LCD and device body, especially SC.

4) Flex Cable

It can be observed visually that LCD Display and Touchscreen digitizer flex cable made by JDF, TM and SC are different in texture. 5) Structure Generally speaking, there are two kinds of mainstream cell phone display constructions of formation, “G+G” and “In-cell”.

Compared with the In-cell structure of OEM LCD, JDF, TM and SC which use G+G touch screen display technology thus cause their overall thickness greater than the OEM ones.

Function

1) Touch

Testing Touch screen digitizer by moving the app icon in all directions including swiping from the edge of the screen, JDF, TM and SC display have no problems with touch function.

2) Display

Testing LCD display in the pure color of gray, white and black, a part of JDF, TM and SC LCDs have somewhat degree problems of backlight leakage, but it does not affect the normal use and can be ignored in a certain sense. Note: The severity of this problem in the actual situation is a lot more slight than the captured pictures above.

3) Color Difference

By comparison, the visual colors of JDF, TM and SC made display differ from the OEM ones.

4) Aging Test

After playing video for 72 hours, JDF, TM, SC have no obvious differences with the OEM ones.

Conclusion

From a series of tests we can find there are only a few differences between OEM display and China made LCDs. In terms of quality, JDF & TM are better than SC. For Price, JDF is more favorable than TM. Therefore, on the market condition that OEM LCDs being out of stock, JDF LCD is the most cost-effective choice for you. Want to order our products? Please contact us: PRE-SALES Skype: rewatech Email: service@rewa.tech AFTER-SALES Skype: support-rewatech Email: support@rewatechnology.com

June 18, 2016