Verify "smartphone with color electronic paper".How is visibility?(Dr. Yamane)

The display of electronic paper represented by Amazon Kindle is the perfect monochrome display for reading text.However, the smartphone "A5 PRO CC" and "A5C" released by Hisense this year are equipped with color displays in the same electronic paper.

It was difficult to see monochrome electronic paper even if you display photos and videos, but it seems that it can be used like a normal smartphone because it becomes colored.I tried the performance of the color electronic paper of A5 Pro CC.

First, check the performance as a smartphone.The A5 Pro CC specifications are UNISOC's T610, the display is a 5.84 -inch color electronic paper, the memory configuration is RAM 4GB + ROM 64GB or RAM 6GB + RAM 128GB, the camera is 1300 pixels and the front 5 million pixels, and the battery is 4000mAh.The price is 1799 yuan (about 27,000 yen) for the 4+64GB version, and the 6+128GB version is 1999 yuan (about 30,000 yen).In China, there are 5G smartphones that can be purchased at the same price range, so it feels a little expensive.

The body is made of plastic.The texture is like a low -cost machine itself, and although it is not cheap and cheap, it seems that scratches and dirt will be immediately attached if the back is not attached.The display protective film is saved from the beginning, just like a recent Chinese smartphone.

When the power is turned on and started, a slightly pale color icon is displayed on the desktop.Although it is a color display, the color is clearly different from the liquid crystal and organic EL.As the name of the electronic "paper", the expression "colored paper" may be perfect.

The pre -installed app also includes Chinese e -book services and online learning services.It may be considered for education for education.

By the way, one of the features of A5 Pro CC is equipped with a Chinese chipset maker, UNISOC SOC.UNISOC is a SPREADTRUM and a proven track record of developing SoCs such as low -priced tablets.Antutu score was 16,000 units and Snapdragon 660 class numbers (measured with A5 Pro CC 6GB + 128GB model).

In this way, the specifications are A5 Pro CC, a middle high -range class, but it is not very realistic to use it as a normal smartphone.A5 Pro CC color electronic paper display can only display 4096 colors.Also, the display does not switch promptly like the liquid crystal or organic EL.

So I first displayed the textbooks that electronic paper are good at.The A5 Pro CC has a built -in front light, so it clearly displays text with a brightness that is unlikely to be an electronic paper.You can read it enough in the dark.However, there is a little unevenness in the light of the light.Also, if you delete the front light, it will be displayed close to monochrome electronic paper.If you read under a bright light, it doesn't have to have a front light.In any case, it seems to be easy on the eyes because neither display is backlight.

It is practical enough to display text like this.However, electronic paper does not switch the display many times per second, such as liquid crystal or organic EL.Therefore, if you just display the text, you can make a clear and beautiful display, but if you scroll and move it, the screen rewriting will not be caught up.Therefore, the A5 Pro CC has the following four screen display modes so that you can select the optimal display mode depending on the content.

・ Clear ・ Balanced ・ Smooth ・ Speed

The reading of the text does not change much in any mode, but there is a difference when swiping the display screen and sending a page.In CLEAR, the movement of the fingertips and the screen display will be delayed by one tempo, but the movement of the fingertips and the screen display are not bothered by the screens.When it is set to SPEED, the display moves as it is according to the movement of the fingertips, but the afterimage remains on the screen.

By the way, some monochrome electronic petata blets have similar display mode switches.When switching the mode, tap the icon at the bottom of the display at the bottom of the display, and a window to switch between the front light and the display mode is displayed by pop -up.This switching window can be displayed when using any app.

By the way, what is worrisome in electronic paper is the afterimage display.Even if you switch the display screen, the previous display may remain slightly.For example, swipe the often used standby screen to the left, display the app icon, and return to the standby screen again, the afterimage of the app icon on the previous screen will be firmly seen.Also, depending on the display of the app, the screen of the previous application may remain slightly.

The afterimage stands out, especially when the color is displayed, and cannot be seen after displaying the monochrome characters and lines, such as the date of the setting screen and calendar app.Color electronic paper will not be suitable for those who are worried about this afterimage.As I noticed, I noticed that when the A5 Pro CC presses the power button, the date and time are displayed on the lock screen like Allways on Display.Then press the power button again and display the original screen to disappear.The screen display may be refreshed once when switching to the lock screen.

So how practical is the color display that could not be done with monochrome electronic paper terminals?First, let's display the illustration.Here is the original image.

I shot the state displayed in the Clear mode of A5 Pro CC.It is not as fresh as liquid crystal or organic EL, but you can see it enough.4096 If the color display is displayed, the display of illustrations and manga seems to be quite practical.You will also see a web page with illustrations.

If you set the other three modes, the display will be slightly rough.There is not much difference between each mode, and if you look at the Speed mode, you can see that the dots are noticeable.The display of the illustration looks good in Clear mode.

Next, I displayed the photo.Here are four modes.The CLEAR mode is also displayed most neatly in the photo.

Compare landscape photos.Similarly, Clear mode is beautiful.At the bottom of the photo, you can also see the afterimage of the previous screen.

On the other hand, when I played the following videos on YouTube with A5 Pro CC, the video was completely opposite.

In Clear mode, the noise is not seen on the screen, but the afterimage is just moving.However, Balanced, Smooth, and Speed were displayed relatively smoothly.SMOOTH felt the easiest to see.This display mode is a mode specialized to play the video smoothly.You can manage to watch the video, but the roughness of the dots will be noticeable, so you will use it as much as "check what is moving".

Although the A5 Pro CC showed the possibility of color electronic paper, it was still not suitable for displaying photos and videos.However, considering the color displayed "paper", I felt that it could be used for illustrations etc.It seems to be suitable for learning content with illustrations such as textbooks and reference books.It seems that it is not compatible with the color electronic comic, so I would like to expect the appearance of 7 -inch class color blets such as Kindle.