Shaun Chen, CY Liang, Jackson Tsai , Cedric Wang

Intel Ecosystem Acceleration Group

April, 2020

Intel® Low Power Display Technology (LPDT) 2.1 Specification

Client Computing Group

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revision History

Resolved brightness definition unclear portion by adding TYP , MIN number in brightness defintion. - spread sheet "LPDT 2.0 spec" change to "LPDT 2.1 spec "- Measurement brightness change from "panel only @185 nits " by adding another column with " Display with Touch and Cover Glass @150 nits" due to multi-request from the field. - Modify LPDT 2.1 spec spread sheet from original "Max Brightness @5 point (stand alone) : 400 nits (Min)" to " Max Brightness @5 point : 400 nits (Typ) 340 nits (Min) " and add " Max Brightness @5 point (Panel with Touch and cover glass) : 340 nits (Typ) 290 nits (Min) " cause multi-reqeusts from field. - Add flicker testing only on panel claimed ≤ 40Hz4 Optics measurement also change from original 250 nits to 2 different column- Panel Standalone (inclduing In Cell and On Cell w/o Cover Glass) 300nits : considering system is measuring 250 nits which is expected with touch and stylus- With Cover Glass and Touch or System Module Panel 250 nits : as same reason of abovetable of 13.3-14" change to 13.0 - 14" to cover other size possibility And defined the other resolution critieria by adding wording " Guideline for other resolutions: The power criteria of the next higher resolution, based on the other resolution’s aspect ratio, will be used" and adding an example

2020/4/13 LPDT 2.1

4

Matrix of LPDT 2.1

*1 LPDT 1.0 is assumed panel without touch feature. Power level measurement brightness level is setting as 150 nits as default.*2 LPDT 2.0 Single and Dual Display configuration is assumed as end product brightness is 150 nits ( with Touch/Stylus and cover lens), so Display standalone need to be measured @185 nits *3 Premium Display is Categorized LCD /OLED display with UHD resolution , DCI-P3 95% (Typ) 90% (Min) , HDR 500 or HDR 400 (TB) + Local Dimming as criteria , border (L,R,T) and panel thickness ≤ 2.05mm and Reflection rate <5% is optional *4 LPDT 2.0 for premium display is assumed as end product is 100 nits ( with Touch/Stylus and cover lens). Display standalone need to be measured @ 120 nits *5 PSR2/LRR is required item to test in LCD (PSR2/LRR is optional for OLED) *6 If premium display is OLED type, DPST is not required since this is BLU required power saving function; And DMRRS is also optional*7 Panel stand alone still measure 185 nits for Single and Dual Display/ 120 nits for Premium display if system design is without CG or/and add-on touch. *8 Flicker only test panel which claimed reaching ≤ 40Hz (flicker is not essential to test if panel is >40 Hz )

Spec for Brightness

Measurement point

Power Flicker*8 DPST/DMRRS*5 Test Pattern

LPDT 1.0(2018-2019) For Single Display only*1 150 nits Ö Recommended Ö MobileMark 2014

Single *2 185 nits*7 Ö Ö Ö MobileMark 2018

Premium Display *3 *4 120 nits*7 Ö Ö Ö*6MobileMark 2018

+ HDR Video Stream

Dual Display *2 185 nits*7 Ö Ö Ö MobileMark 2018

LPDT 2.0(2020~)

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Panel Power Measurement (LPDT 2.1) Test Scenario and Setting

Ø Idle Scenarios

ü 32x32 Mosaic

ü Win10 Default Wallpaper

Ø Video Scenarios

ü Tears of Steel Video

ü Mobile Mark 2018

ü HDR Video Stream

Ø Backlight Settings:

ü 185 nits

ü 120 nits for Premium Display

ü Maximum Brightness

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LPDT Panel Test CriteriaLPDT Hardware Spec. 2.1 - Page 1

LRR : Defined as Intel LRR technology , LRR 1.0 or newer version

Display only Display with Touch and

Cover Glass@185 Nits @150 Nits

16:9 Logic1920x1080 Backlight

3:2 Logic1920x1280 Backlight

16:9 Logic2560X1440 Backlight Max Brightness @5 point (Stand Alone) : 400 nits (Typ) 340 nits (Min)

Max Brightness @5 point (Panel with Touch and cover glass) : 340 nits (Typ) 290 nits (Min) 16:9 Logic 32x32 Mosaic Pattern (Idle)

1920x1080 Backlight 8 Bits100% sRGB (typ) , 95% sRGB (Min)

3:2 Logic Panel Thickness T ≤ 2.05 mm1920x1280 Backlight Bezel (L/R/U) ≤ 2.55mm

Constrast Ratio : 1500:1 (Typ) 800:1 (Min)16:9 Logic 16:10 panel is same criteria with 16:9

2560X1440 Backlight PSR2/LRR is reqruied

3:2 Logic3000x2000 Backlight example : 3:2 2880X1920 critieria is same as 3:2 3000X2000

16:9 Logic

3840x2160 Backlight

Power: mW

Total Power

Feature

Brightness Spec

12.3~12.5"

13.0~14"

Total Power

Total Power

Total Power

Remark

Total Power

Total Power

Total Power

Total Power

350650

1000350850

1200400850

1250350850

1200350

10501400400

11001500500

12501750800

14502250

Guideline for other resolutions: The power criteria of the next higher resolution, based on the other resolution’s aspect ratio, will be used

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LPDT Panel Test Criteria (Cont.)LPDT Hardware Spec. 2.1 - Page 2

LRR : Defined as Intel LRR technology , LRR 1.0 or newer version

Display only Display with Touch and

Cover Glass@185 Nits @150 Nits

16:9 Logic1920x1080 Backlight

Max Brightness @5 point (Stand Alone) : 400 nits (Typ) 340 nits (Min) 3:2 Logic Max Brightness @5 point (Panel with Touch and cover glass) : 340 nits (Typ) 290 nits (Min)

1920x1280 Backlight 32x32 Mosaic Pattern (Idle)8 Bits

16:9 Logic 100% sRGB (Typ) , 95% sRGB (Min) 2560X1440 Backlight Panel Thickness T ≤ 2.7mm (Max)

Bezel (L/R/U) ≤ 2.55mm3:2 Logic Constrast Ratio : 1500:1 (Typ) 800:1 (Min)

3000x2000 Backlight 16:10 panel is same criteria with 16:9 PSR2/LRR is reqruied

16:9 Logic3840x2160 Backlight

example : 3:2 2880X1920 critieria is same as 3:2 3000X2000

15.6"

Power: mWFeature

Brightness Spec

Total Power

Total Power

Total Power

Total Power

Total Power

Remark

1400350

12001550

350

Guideline for other resolutions: The power criteria of the next higher resolution, based on the other resolution’s aspect ratio, will be used

1900800

17002500

40014001800500

1400

1050

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LPDT 2.1 Test Criteria for Premium DisplayPremium Display Definition :

§ UHD resolution is required

§ High color gamut higher than DCI-P3 95% (Typ) 90% (Min) , local dimming is required

§ HDR400+Trueblack or HDR500 is required

§ Panel Thickness, and Top/Left/Right bezel ≤ 2.05 mm

§ Lower down the luminance to 100nit due to human perception on Power testing

§ Panel reflection rate including touch should be less than 5% (optional)

Criteria : Display with Touch & Stylus

@120 Nits

16:9

3840X2160

16:9

3840X2160

Premium Display 13.3"

UHD ,DCI-P3 95% (Typ) 90% (Min) , HDR 500 or HDR 400 (TB) + Local Dimming , border (L,R,T) and panel thickness ≤ 2.05mm , Reflection

rate <5% is optional (PSR2/LRR is optional for OLED)Whole panel 3800

Power: mWFeature

RemarkBrightness Spec

4400Whole panelPremium Display 15.6"

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Optics Test Specification

Test Item Panel Standalone (inclduing In

Cell and On Cell w/o Cover Glass)

With Cover Glass and Touch or System Module Panel

Brightness 300 nits (Min) 250 nits (Min)Color Gamut (100% sRGB)

Color Accuracy (∆E)Viewing Angles

sRGB 90% (Min)≤4

150o (Min)

Criteria

Client Computing Group