MIUI News Team

Rank: 6Rank: 6

Credits
18164
Device
Redmi Note 7
Online time
721 Hours
Send PM

Xiaomi 7th AnniversaryMIUI 7MarshmallowFantastic!MIUI 8I Love MIUIMIUI Devices ContestRedmi 2MIUI 9MIUI 300 WeeksXiaomi 6th AnniversaryHappy DiwaliMIUI Forum AppHappy Valentine's DayPuzzle MasterRocket to FutureMIUI 7th AnniversarySurge S13500K Forum MembersMIUI Beta TeamMIUI Weekly Devices QuizSurprise2017 Annual AwardsDie-hard MIUI FanMIUI FollowerMi Lover MedalMIUI Android 4.4 KitKatMi Bunny Game Master Android GuruForum Contest Lover

[Tech] [Exploring Tech #2] AMOLED vs LCD: Which Display Hurts Our Eyes More?

  [ Promote]
32171 602 |
20:44, Jun-21-2018 | From PC
|
|
Go to reply no.
142216nkm77mhkq7kpehdz.png

Greetings Mi Fans,

The current era of smartphones belong to 18:9,19:9 displays meaning bigger screens. The screen size of 5.99 inches and plus have also become common, enabling us to do more with our smartphones.

According to Statista,
In China, people have been found to look at their smartphones at an average of 3 hrs, per day, which is expected to even increase by the end of 2018.

This is a fact that smartphones have become a part of our daily life, meaning that its impact on our health (especially the young-gen) has become a heated topic of discussion. Everyone has its own take on every aspect related to smartphone (display, use time, apps etc.).

Here, we try to find an answer to one of those questions: Which type of smartphone display hurts our eyes more ? LCD or AMOLED ?

The Basic Comparision

AMOLED display is a screen composed of self-luminous organic materials. It does not require the LCD backlight, because when the beam passes through the organic material, the pixels will self-illuminate. Therefore, compared with the LCD screen, the AMOLED has higher contrast and other display advantages.

oled-vs-lcd.png

However, being more ‘ideal’ also means paying more. The AMOLED displays are thought to cause ‘eyes hurt’ because of low-frequency dimming by AMOLED manufacturers. Here is a simple explanation of PWM low-frequency dimming technology.

DC Low-Frequency Dimming Technology

All monitors have brightness adjustment function. But due to the difference in materials, the dimming technology is different. The most popular current smartphones are DC dimming and PWM dimming. LCD screens rely on LED backlights for light emission. Therefore, in the field of smartphones, LCD screens mostly use DC dimming, which is a technology that adjusts the brightness by directly controlling the currents on both sides of the light-emitting device. The smaller the current, the lower the brightness.

DC dimming itself is a very straightforward method. But it has obvious drawbacks. As the wavelengths of the three primary colors are different, DC dimming can cause inevitable color casts at the extremely low brightness

The DC dimming and AMOLED screens are even more incompatible. As mentioned earlier, AMOLED displays are self-illuminating technologies that rely on organic materials. Therefore, the display quality of the AMOLED display is directly related to the quality of the screen materials. The color difference between pixels will be clearly demonstrated. Under DC dimming, early models such as the Galaxy S, S2, and Note suffered from uneven white color and serious color casts. What’s sadder, this problem has not been solved well even so far.

PWM Low-Frequency Dimming

Due to the above mentioned reasons, PWM dimming comes out as a substitute. Unlike DC dimming, which directly adjusts the current level to control the brightness, the PWM dimming method is more ingenious. We know that the switching light source causes flickering. But when the frequency of the switching light source exceeds the limit of the human eye, since the luminance information of all the screens is superimposed on each other in the human eye, the speed of the frequency will only affect the brightness of the screen.

This technique, for controlling the brightness by rapidly switching the screen light source, is called PWM dimming (Pulse-Width Modulation). So we can state, the PWM dimming reference solves the problem of the early low-brightness color cast in the AMOLED display, and in fact further improves the color stability.

However, since PWM dimming is a technique that adjusts the brightness by fast flickering, even if the human eyes cannot perceive the screen changes in the switching process, our brain responds to this phenomenon. Frequent flickering cause fatigue, which stimulates the refraction system to work together to accelerate the aging of vision. Since all current Samsung AMOLED displays use 250Hz low-frequency PWM dimming technology, the lower the screen brightness, the lower the strobe rate, and the greater the possibility of human eyes being able to perceive, making it easier for sensitive people.


Source:  GizChina

Regards,
sagarplay
MIUI News Team


Disclaimer: This is a reproduced article and the copyright rests with the original author. The views in this article are not from MIUI News Team, or MIUI Global Forum. If there is any disagreement, please contact the Forum Management Team to delete it

Single-option Poll, 3889 members voted
Your User group have no permission to vote
Favorite46 Share

Rated by 19 people   Experience Prestige Reason  

Miyoko64 + 2 Agreed!
amn87 + 1 Great!
Horakhtyo + 1 Thanks!
1844451919 + 1 Great!
fapm0nster + 1 Fantastic!
Dignissim + 1 Awesome!
ziyuzt + 2 Agreed!
Seventh_Scream + 1 Thanks!
oeenightmare + 1 Fantastic!
Lloydie5 + 1 Agreed!
hearthekker + 4 Fantastic!
mystique9 + 2 Thanks!
DJStatikVX + 10 Great!
kintan_oo7 + 5 Awesome!
jano\'s + 2 Great!
Manish@786 + 10 + 3 Fantastic!
AadiSree + 5 Fantastic!
candicesu + 10 Fantastic!
VikuBalupura + 10 + 3 Fantastic!

Experience +70  Prestige +6  View Rating Log

MIUI Resources Team

Rank: 6Rank: 6

Credits
23377
Device
Redmi Note 5/Pro
Online time
602 Hours
Send PM

Unlock MedalMijia VR Play 2Yi Action CameraXiaomi 6 LaunchMi HomeNinebot MiniMagic CubeMi  BunnyMi BandMi Band 2Xiaomi 7th AnniversaryMIUI 8MIUI Devices ContestAnTuTuI Love MIUIMi TV4 Million Forum MembersXiaomi Mi 6Redmi 4/Prime/4AMIUI 910 Million Forum PostsMIUI 2017Rocket to FutureSuper ThursdaySuper WednesdayWomen's Day MedalMIUI PMIUI Fan from Turkey1st AnniversaryXiaomi 6th AnniversaryFan Of MIUI IndiaMIUI S2 Million Forum MembersMIUI Happy MedalSuper MondayMIUI Weekly PollHappy Singles' DayMIUI Lucky Friday3 Million Forum MembersRingolicious MedalHilal Ramadan 100k Forum MembersSuper SundayPuzzle Master90000 Forum MembersSuper SaturdaySuper Tuesday5 Million Forum App InstallsMIUI Philippines Fan MeetupMIUI Forum AppMIUI Font LoverHappy Holi Medal300K Forum MembersGamer Mi BunnyMIUI ReviewXiaomi 8th AnniversaryDebate MasterMIUI FB Follower5 Million Forum MembersBlack SharkMost Active MIUIerTheme TalentMi Bunny Game Master Pioneer of MIUI English Forum 9 Million Forum MembersApp StarMIUI Quick DiscussionSurpriseMi TalentDie-hard MIUI FanAndroid GuruAndroid ElfMIUI Weekly Devices QuizScroll Of WisdomMi Lover MedalForum Contest LoverMIUI ExpertRingtone Star Technology GuruRedmi 5/Plus2017 Annual AwardsQuick SurveyOTA FeedbackMIUI KingMIUI SuperstarOreoNougatStar Of Technology8 Million Forum MembersStar WarsMi Story Teller

20:53, Jun-21-2018 | From PC
|
LCD displays
kalhey
QQ-3497155564

Diamond Member

Rank: 5Rank: 5

Credits
847
Device
Redmi Note 4X
Online time
20 Hours
Send PM

1st AnniversaryFan Of MIUI IndiaPuzzle MasterRocket to FutureXiaomi 6th AnniversaryMIUI Weekly Devices QuizStar Of TechnologyMi Lover Medal9 Million Forum MembersXiaomi 8th Anniversary

23:39, Jun-21-2018 | From PC
|
There is no difference for me. I used AMOLED and LCD. Both are good.

MIUI Beta Team - China

Rank: 6Rank: 6

Credits
18105
Device
Redmi Note 4X
Online time
63 Hours
Send PM

Mi  BunnyUnlock MedalMijia 360° Panoramic CameraMijia Walkie TalkieMi HomeMi BoxMi ScaleMijia Smart PTZ CameraYi Action CameraMi Notebook AirMi WiFi RouterNinebot MiniNinety Degree LuggageMi T-ShirtMi Power BankMi BandMijia Smart ShoesMi TV 70Magic CubeMi Bluetooth HeadsetMi Kids WatchXiaomi 7th AnniversaryFantastic!MarshmallowAwesome!FlashholicMIUI Devices ContestI Love MIUIAnTuTuRedmi Note 4X10 Million Forum Posts5 Million Forum App InstallsSurge S1Happy Valentine's DayMIUI Marathon MedalMIUI World TourMIUI Forum AppMIUI SFan Of MIUI India1st AnniversaryXiaomi 6th AnniversaryPuzzle MasterMIUI PSuper SundayMIUI Happy MedalMIUI 20 Million Users2 Million Forum MembersSuper SaturdayMIUI Fan From IndonesiaWomen's Day MedalRocket to FutureSuper MondayMid-Autumn FestivalMIUI 7th AnniversaryMIUI 50 Million UsersMIUI Lucky FridayMerry ChristmasMIUI 9Happy New YearHappy DiwaliDiwali Alpaca Mi Bunny Summer Mi BunnyGamer Mi BunnyMiPopHeart to HeartMIUI Tech Survey13 Million Forum MembersHappy 2019MIUI King7 Million Forum Members25 Million StrongDie-hard MIUI FanPOCO F1MIUI 8th AnniversaryDual CameraMIUI 10Mi DropScroll Of WisdomMaster Of TechnologyIndia Independence DayMIUI Halloween 2018Star WarsDiscuss HereHumor Master10 Million Forum MembersMi TalentMIUI Medals CollectorMi Lover MedalTechnology GuruPioneer of MIUI English Forum Redmi Quiz Master9 Million Forum MembersMIUI Quick DiscussionStar Of Technology2017 Annual AwardsMost Active MIUIerMIUI FollowerMIUI Twitter FollowerTheme TalentMIUI Halloween 2017Mr. DependableAndroid ElfOTA FeedbackMIUI FB Follower5 Million Forum MembersMIUI Weekly Devices QuizSurpriseApp StarBlack SharkMIUI SuperstarQuick SurveyXiaomi 8th Anniversary6 Million Forum MembersMi Story TellerAndroid GuruNougatForum Contest LoverOreo8 Million Forum Members

00:15, Jun-22-2018 | From Redmi Note 4X
|
AMOLED 👍
Love to miui

Elite Member

Rank: 6Rank: 6

Credits
10250
Device
Others
Online time
407 Hours
Send PM

Mi HomeMi WiFi RouterYi Action CameraUnlock MedalNinebot MiniAwesome!AnTuTuMIUI Devices ContestI Love MIUIPuzzle Master1st AnniversaryMIUI Fan from TurkeySuper MondayMIUI World TourMIUI Marathon MedalMIUI SMIUI Fan From IndonesiaHappy Valentine's DayFan Of MIUI IndiaXiaomi 6th AnniversaryHappy Singles' DayMIUI PMIUI Happy Medal2 Million Forum MembersRocket to FutureMi DropScroll Of WisdomMIUI Medals CollectorQuick SurveyAndroid GuruBlack Shark6 Million Forum MembersMIUI 10Forum Contest LoverHeart to Heart13 Million Forum MembersHumor MasterMIUI Halloween 2018MIUI Weekly Devices QuizDiscuss HereIndia Independence DayOTA FeedbackXiaomi 8th AnniversaryStar WarsMIUI Quick DiscussionMIUI SuperstarMIUI FB Follower9 Million Forum MembersMi Talent8 Million Forum MembersMIUI 8th AnniversarySurpriseStar Of TechnologyMi Lover MedalDebate MasterApp StarAndroid Elf

04:20, Jun-22-2018 | From PC
|
AMOLED

Supreme Member

Rank: 7Rank: 7Rank: 7

Credits
20045
Device
0
Online time
30 Hours
Send PM

Mi HomeMi HeadphonesMijia Mi Bunny RobotMi Bluetooth SpeakerUnlock MedalMijia Story TellerMi Plastic In-ear PhonesMijia VR Play 2Mi VR HeadsetNinebot MiniMi Notebook AirXiaomi 6 LaunchMi Band 2Mi VRMagic CubeMijia Qi CycleMi  BunnyXiaomi 7th AnniversaryI Love MIUIMIUI 2016MIUI Devices ContestFantastic!MIUI 8Awesome!4 Million Forum MembersRedmi 4/Prime/4AHappy Holi MedalSuper SundayFan Of MIUI BangladeshSuper SaturdayMIUI SMIUI Forum App5 Million Forum App InstallsMIUI World TourWomen's Day MedalSuper WednesdaySuper MondaySingapore Merlion MedalSuper TuesdaySuper FridaySurge S1Fan Of MIUI FranceSuper ThursdayRocket to FutureHappy Valentine's DayPuzzle Master10 Million Forum Posts3 Million Forum MembersMIUI Fan from IndiaRooster Year of 2017MIUI 100 Million UsersMIUI 2017500K Forum MembersMIUI Philippines Fan MeetupMIUI Fan from MalaysiaMIUI 7th AnniversaryMIUI Happy MedalMIUI PCamera Filter Guru MedalFan Of MIUI IndiaMIUI Fan From Philippines100k Forum MembersMIUI 9Fan Of MIUI AustraliaMIUI Lucky Friday300K Forum Members3500K Forum MembersRingolicious Medal90000 Forum MembersI Love Mi BunnySummer Mi BunnyGamer Mi BunnyMiPopMIUI ReviewMaster Of TechnologyMIUI Weekly Devices QuizMIUI Quick DiscussionMIUI 10Theme TalentAndroid ElfTechnology GuruMi Story TellerDebate MasterForum Contest Lover8 Million Forum MembersAndroid GuruXiaomi 8th AnniversaryRingtone Star MIUI Android 4.4 KitKatMi TalentMIUI Medals CollectorMost Active MIUIerMi Bunny Game Master India Independence DayMIUI SuperstarMr. DependableIndonesia Independence Day25 Million StrongMIUI FollowerPioneer of MIUI English Forum Youth PledgeDie-hard MIUI FanMIUI Ice Bucket ChallengeMi Lover MedalMIUI ExpertStar Of TechnologyUpdates LoverMost Popular Forum UserOTA FeedbackMIUI KingScroll Of Wisdom

16:49, Jun-22-2018 | From Redmi Note 4X
|
AMOLED is better

Platinum Member

Rank: 4

Credits
2789
Device
0
Online time
2 Hours
Send PM
16:50, Jun-22-2018 | From Redmi 4A
|
Amoled

MIUI Beta Team - China

Rank: 6Rank: 6

Credits
12360
Device
Mi MIX
Online time
142 Hours
Send PM

Mijia Smart ShoesNinebot MiniMi Notebook AirUnlock MedalMi MIXI Love MIUIMIUI Devices ContestFantastic!Mi MIX5 Million Forum App InstallsXiaomi 6th AnniversaryMIUI S10 Million Forum PostsMIUI 9Happy Valentine's DayMIUI Happy MedalMIUI Fan From IndonesiaRocket to FutureMIUI PMIUI Weekly PollHappy Singles' DayGamer Mi BunnyBlack SharkMIUI FB FollowerXiaomi 8th AnniversaryMIUI Superstar25 Million Strong6 Million Forum MembersMIUI 10MIUI 8th Anniversary5 Million Forum MembersSurprisePioneer of MIUI English Forum 9 Million Forum MembersOreoAndroid ElfMIUI Weekly Devices QuizNougatMIUI Quick DiscussionMi Lover MedalOTA Feedback2017 Annual AwardsTheme TalentStar Of TechnologyQuick SurveyMi TalentMIUI FollowerStar Wars8 Million Forum MembersAndroid GuruDebate Master

16:56, Jun-22-2018 | From Mi MIX
|
Amoled

Supreme Member

Proud To Be தமிழன் !

Rank: 7Rank: 7Rank: 7

Credits
45729
Device
Redmi Note 5/Pro
Online time
1791 Hours
Send PM

Magic CubeMi WiFi RouterMi T-ShirtMi Selfie StickMi Power BankMi Notebook AirMijia Electric ScooterMijia VR Play 2Ninebot MiniMi MIXMi VRXiaomi 6 LaunchMijia Mi Bunny RobotMijia Smart ShoesMi HomeUnlock MedalMi  BunnyYeelight Bedside LampMi Bluetooth SpeakerMi HeadphonesMi Band 2Mi Power Bank 10000MAH Yi Action CameraMi WiFiMi VR HeadsetMi BandMi WiFi Router MiniMi Plastic In-ear PhonesNinety Degree LuggageMi BoxMi TV 70Mijia 360° Panoramic CameraMijia Story TellerMijia Qi CycleXiaomi 7th AnniversaryI Love MIUIAwesome!FlashholicAnTuTuMarshmallowMIUI 2016MIUI 7Fantastic!MIUI Devices ContestMIUI 8Redmi 4/Prime/4ARedmi Note 4Mi 4cRedmi Note 3Mi TV4 Million Forum MembersMIUI World TourRooster Year of 2017I Love 2016Happy New YearMIUI 2017UEFA EURO MedalFan Of MIUI ItalyHappy Valentine's DayMIUI 5th AnniversaryCamera Filter Guru Medal1st AnniversaryMIUI Lucky FridayXiaomi 6th AnniversaryMerry ChristmasMIUI PMIUI 20 Million UsersMid-Autumn Festival100k Forum MembersMIUI 50 Million Users2 Million Forum MembersMIUI 6th AnniversaryPokemon Master MedalHappy Singles' DayMIUI Fan from IndiaMIUI Fan from MalaysiaMIUI Philippines Fan MeetupAtaturk MourningMIUI S1700K Forum Members1400K Forum MembersFan Of MIUI IndiaMIUI Forum AppHappy DiwaliOlympics MedalMIUI Fan From VietnamMIUI 300 WeeksDiwali Super TuesdayMIUI 7th Anniversary90000 Forum MembersMIUI Fan From NepalFan Of MIUI BangladeshSuper SundayMIUI Font LoverHappy Holi MedalMIUI Fan From PhilippinesSuper Saturday300K Forum MembersFan Of MIUI Poland500K Forum MembersFan Of MIUI AustraliaMIUI 9Ringolicious MedalFan Of MIUI UkraineMIUI Marathon MedalHilal Ramadan 3500K Forum MembersMIUI 100 Million Users5 Million Forum App InstallsMIUI Fan From IndonesiaFan Of MIUI RussiaWomen's Day MedalSuper WednesdaySurge S1Singapore Merlion Medal5 Million Forum PostsSuper Friday10 Million Forum Posts3 Million Forum MembersSuper ThursdayMIUI Happy MedalXiaomi 5th AnniversaryRocket to Future1300K Forum MembersMIUI Weekly PollSuper MondayPuzzle MasterI Love Mi BunnyGamer Mi BunnyMiPopMIUI ReviewNougatQuick SurveyMIUI Quick DiscussionOreo10 Million Forum MembersMIUI Halloween 2018MIUI Weekend GiveawayDiscuss HereMIUI 10Heart to HeartPOCO F1MIUI Tech SurveyHappy 201913 Million Forum MembersDual Camera6 Million Forum MembersSurprise5 Million Forum MembersXiaomi 8th AnniversaryApp Star9 Million Forum MembersMIUI 8th Anniversary8 Million Forum Members25 Million StrongBlack SharkScroll Of WisdomOTA FeedbackMIUI SuperstarMost Popular Forum UserMIUI KingRingtone Star Star WarsUpdates LoverMIUI Ice Bucket ChallengePioneer of MIUI English Forum Theme TalentMIUI Halloween 2017Mr. DependableMIUI G+ FollowerRingtone ExpertIndia Independence DayMost Active MIUIerMi Bunny Game Master MIUI ExpertMaster Of TechnologyMIUI FB FollowerYouth PledgeMi Story TellerMIUI Android 4.4 KitKatForum Contest LoverRedmi Note 5/ProMIUI Weekly Devices QuizTechnology GuruMIUI FollowerMi Lover MedalDie-hard MIUI Fan2017 Annual AwardsAndroid ElfDebate MasterStar Of TechnologyMi TalentAndroid GuruMIUI Medals Collector

16:58, Jun-22-2018 | From PC
|
LCD Display

Elite Member

Rank: 6Rank: 6

Credits
12730
Device
Redmi 4X
Online time
842 Hours
Send PM

Mi HomeMi Selfie StickMi Plastic In-ear PhonesMi HeadphonesMijia VR Play 2Mijia Electric ScooterYi Action CameraMi Power Bank 10000MAH Mi Bluetooth SpeakerMi Power BankMi Band 2Mi  BunnyMi Kids WatchMi VR HeadsetUnlock MedalMi WiFiMijia Smart PTZ CameraMijia Qi CycleMagic CubeXiaomi 7th AnniversaryI Love MIUIMIUI 7AnTuTuMIUI Devices ContestAwesome!MarshmallowFlashholicMIUI 8MIUI 2016Fantastic!Redmi 4XMi TVMi NoteMi 4c4 Million Forum MembersMIUI Happy Medal500K Forum Members1500K Forum Members1400K Forum MembersMerry ChristmasRooster Year of 2017MIUI 2017MIUI Drawing Talent1700K Forum MembersHappy New YearMIUI 7th AnniversaryFan Of MIUI IndiaMIUI Lucky FridayMIUI Fan from IndiaMIUI 20 Million UsersXiaomi 6th AnniversaryMIUI SPokemon Master MedalMid-Autumn FestivalMIUI 300 WeeksThanksgiving DayMIUI 6th AnniversaryMIUI Forum AppMIUI World Tour5 Million Forum App InstallsHappy Holi MedalFan Of MIUI RussiaSuper ThursdayCamera Filter Guru MedalSuper SaturdayMIUI Font LoverFan Of MIUI Australia90000 Forum Members300K Forum MembersMIUI Weekly PollSuper TuesdaySuper MondayMIUI 9Fan Of MIUI GreeceRocket to FutureMIUI 50 Million UsersHappy Valentine's DayFan Of MIUI ItalyPuzzle MasterSurge S1Gamer Mi BunnyMiPopI Love Mi BunnyMIUI Device TeamMIUI Beta TeamAndroid ElfAndroid GuruMIUI Quick DiscussionMIUI Halloween 2017SurpriseTheme TalentPioneer of MIUI English Forum Debate MasterMost Active MIUIerStar WarsMi TalentMIUI Weekly Devices QuizMi Bunny Game Master Xiaomi 8th AnniversaryForum Contest LoverMIUI FB FollowerMIUI Android 4.4 KitKatDie-hard MIUI FanRingtone Star Mr. DependableUpdates Lover2017 Annual AwardsScroll Of WisdomMaster Of TechnologyStar Of TechnologyYouth PledgeMIUI FollowerInbox ZeroMIUI KingMi Story TellerMi Lover MedalTechnology GuruMIUI ExpertMIUI G+ FollowerMIUI Medals Collector

17:11, Jun-22-2018 | From PC
|
All display hurts eyes, the damage they will make is what  intensity going to defer.
USE REPLY BUTTON

Credits Management

Quick Reply Top Return to the list