The Android tablet has developed for more than two years. The screen parameters have developed from 1024 * 600 of the Galaxy Tab P1000 in 2010 to 2560 * 1600 of the Nexus 10. The screen has made great progress in both technology and parameters. The current flat panel resolution has reached the level of surpassing full HD, and screen technology has also seen examples of outstanding effects such as IPS and PLS. Let's review how the screen of Android tablet developed.

Screen resolution

Android 2.2

The development of Android tablet is closely related to the version number. In Android 2.2, most Android tablets had low resolution, generally 1024 * 600. Some tablets even used the same 480 * 800 as mobile phones. This resolution would be very grainy even on small tablets.

Android 3.0

The second stage is Android 3.0. There are many 720P screens, most of which are 1280 * 800 (including virtual keys). The author thinks that the real "Android tablet" has emerged in this era, because Android 3.0 is completely based on tablets, and the key layout is also customized according to the operating habits of tablets.

Android 4.0

In Android 4.0, the interface of Android tablet has not changed much compared with 3.0, but full HD tablets have emerged, such as MediaPad 10 FHD, ASUS TF700, Acer A700, etc., all adopt full HD screen standards. From here on, there is a big problem, that is, the full HD tablet has been greatly improved compared with the previous screen, and many applications will be incompatible. In addition, 1080P screens have much higher requirements for GPUs. In the Android 4.0 era, GPUs can hardly cope with the load of 1080P.

Android 4.2

In the latest Android 4.2, with the emergence of Nexus 10, the resolution of Android tablet has risen again, reaching the horrible standard of 2560 * 1600. This high resolution was only used on 27 inch or even larger screens of PCs in the past, but now it has been applied to 10 inch tablets, which makes people exclaim the progress of technology. Of course, in addition to the rising resolution, the Nexus 10 brings the A15 processor with a new architecture, and the GPU is also a very powerful Mali-T604. Such a robust configuration is also necessary in the face of high resolution.

Development prospect

For the 10.1 inch Android tablet, 2560 * 1600 is a very powerful standard. The ppi has reached the "retina" level, and only one Nexus 10 has adopted such adverse parameters for the time being, so it will take some time to digest it, and other brands will have breakthrough development after they catch up with this resolution. But for the 7-inch tablet, 1280 * 800 obviously has a lot of room for development. Just imagine that there will be many 5-inch 1080P mobile phones by the end of this year, and the 7-inch tablet will certainly not show weakness. The 7-inch 1080P tablet is likely to erupt next year, and this visual feast is very attractive to users.

Screen technology

As for screen technology, Android tablet is mainly divided into conventional TFT, widely used IPS and Samsung's unique SAP and PLS.

TFT

For conventional TFT, it has basically been faced with obsolescence. After the emergence of various advanced technology screens, TFT has become increasingly weak, and it is usually used by cost control products.

IPS

IPS has excellent display effect and is used by most Android tablets. Even many domestic counterfeit brands are competing to use IPS panels, giving the impression that IPS is the only panel... But it should be noted that IPS does not fully represent high quality, IPS panels are also being launched by many companies, and the display effect of IPS panels from different companies can vary greatly. Therefore, readers should keep their eyes open and distinguish the advantages and disadvantages of the screen.

SAP

Samsung's SAP (i.e. Super Amoled Plus) was originally a screen technology applied to mobile phones. It was first used on the popular i9100. Compared with the original Super Amoled, its biggest advantage is that it does not use the Pentile array, but the traditional RGB array, so it will not show a particularly serious problem of burrs. The gorgeous colors and detailed performance made SAP praised by all parties. In addition to the i9100, Samsung also introduced SAP, a brand technology, to the Galaxy Tab 7.7 tablet. At that time, it was really not easy to achieve a 7.7 inch RGB Super Amoled screen.

PLS

PLS is a screen technology used by Samsung on some large-sized tablets. Its products include high-end products such as Galaxy Tab 2 and Nexus 10. The effect of this screen is even better than that of IPS, with a very large viewing angle and high brightness. See the screen of Nexus 10 for details, but it seems that the screen leaks light seriously in actual measurement.