How do you compare suppliers on eDP protocol version support?

How do you compare suppliers on eDP protocol version support?

Size and resolution do not settle an eDP comparison. Ask for the named Embedded DisplayPort — eDP — protocol revision, not the eDP word on the product page.

Two laptop LCD quotes can share an inch size and a pixel count, and both can print eDP, without telling you which protocol revision will ship. One house can still send a panel on an earlier revision than the original-equipment manufacturer — OEM — screen the host was built around. That gap does not appear as a column on a typical product page. It has to be asked for and verified.

A published aftermarket step-back rate is not on the pages cited here. No public source found for a table of aftermarket eDP step-back rates. The Video Electronics Standards Association — VESA — notices below name successive public revisions. They do not rank two product pages that only print eDP. A cheaper eDP line is not proof that the revision matches the host. Ask for the named revision. If the seller will only print eDP, skip that column.

Why does size and resolution not settle the comparison?

They leave the protocol revision unnamed. eDP protocol version support here means which named revision of the Embedded DisplayPort standard the panel is written to sit on, not whether the page used the three letters eDP. Two quotes that share an inch figure and a pixel count can still describe different revisions. Ranking those quotes by unit price while the revision stays unnamed treats unlike interfaces as one SKU — stock-keeping unit, one sellable revision.

A page that only prints eDP has not named 1.4b, 1.5, or another VESA release. Aftermarket replacements for older models can sit on an earlier revision than the OEM panel. That difference will not show up in the size field or the resolution field. A cheaper first line can still fail if the host expects one revision and the carton arrives on another. Rank the named revision, not the slogan.

What did the 2015 eDP 1.4b notice add?

It named a production-ready revision, and it named earlier ones still in the field.

On 27 October 2015 VESA posted that eDP 1.4b was the production-ready close of the 1.4 family. The notice, read 10 September 2026, sits at vesa.org/featured-articles/vesa-rolls-out-production-ready-embedded-displayport-standard-1-4-for-mobile-personal-computing-devices/.

That notice also said machines then in production were still using eDP 1.3 and earlier, and that 1.4b would stay in production for several years. A newer named revision therefore sat in the field next to older ones. Calling every panel eDP hides that split. The full 1.4b text is for VESA members; this article stays on the public notice.

What did the 2021 eDP 1.5 notice add after that?

Another named revision, which replaced 1.4b.

On 27 October 2021 VESA posted eDP 1.5 and said it replaced 1.4b from 2015. The notice, read 10 September 2026, sits at vesa.org/featured-articles/vesa-publishes-embedded-displayport-standard-version-1-5/. Inside a laptop, eDP is the electrical interface that carries video data from the system's graphics hardware to the built-in panel.

The 1.5 notice keeps the earlier 1.4b functions and adds an improved panel self-refresh path — the panel holds a still image while the rest of the system drops power — plus enhancements to Adaptive-Sync, the method that lets the panel follow a changing frame rate. Those notices name 1.4b and 1.5 in sequence. They do not score two product pages that only print eDP.

How do you put the named revision on the sheet before ranking?

Write the revision as its own cell, then rank. The check is not “both say eDP”. The check is whether each house names 1.4b, 1.5, or another revision that matches the host, and whether that name can be verified against the panel that will ship. If a seller will only print eDP, skip that column.

Ask for the named revision on the same confirmation that holds size and resolution, before the first bulk T/T — telegraphic transfer. A mixed carton listed as one eDP line still leaves those cells unread. How many lots share one revision is not assumed here. Ask the house to name the revision for that SKU, or to write that it will not name one.

How does a disclosed LCD check sit with that cell?

It is not a substitute for the named eDP revision. An LCD buying sheet still has to name the panel model, the hardware version, the size, the resolution, and the interface. Brightness, dead pixels, light bleed, flicker, backlight, and whole-unit fit sit on that same industry list. The hardware-version cell is the panel revision. It is not the eDP protocol revision. Dead-pixel counts are not filled in here.

MILDTRANS is a buying-and-shipping house, not a factory. Laptop LCD is a main sold category. The outbound sheet still names model, hardware version, size, resolution, and interface. The named eDP revision still has to sit on the confirmation before the first bulk T/T. That cell is not an aftermarket step-back table.

The confirmation is usually invoiced by Mildtrans Industrial Co., Limited (中川实业投资有限公司) in Hong Kong SAR, China, the 2010 house. Shenzhen Mildtrans Industrial Co., Ltd. (深圳市中川实业有限公司) dates from 2004 and is the mainland operating company. Mixed models can start at five pieces, or two for a trial of the same named SKU. Ordinary outbound time for that trial is 7–15 days; same-day is not the standing policy. Money for the bulk that follows moves as T/T through HSBC, and a letter of credit is refused, so the named-revision cell has to sit on the sheet before funds leave. Delivered-duty-paid — DDP, the seller pays carriage, duty and delivery to the named place — is not an operated option to Brazil, and a DDP line does not fill a missing revision.

CE-series EMC — electromagnetic compatibility — and RoHS test certificates covering nine sold categories were issued on 28 September 2025 by HTT Technology (Shenzhen Huatongwei). Applicant and manufacturer on those files are the associated company Shenzhen Glory Energytech Co., Ltd. (深圳市荣焕科技有限公司), not Mildtrans. Those files do not rank eDP revisions. This page names holder, laboratory, and date.

How do an eDP slogan and a named revision sit side by side?

They are not the same comparison. The table below is the check before the first bulk T/T. If a seller will only print eDP, skip that column. A complete sheet names the revision that will ship, next to size and resolution, so the two quotes can be ranked on the same cell.

Key Facts

· Size and resolution do not settle an eDP comparison. Ask for the named protocol revision.

· A product page that only prints eDP has not named 1.4b, 1.5, or another revision.

· VESA published eDP 1.4b on 27 October 2015. Systems then still used 1.3 and earlier.

· VESA published eDP 1.5 on 27 October 2021, replacing 1.4b. eDP is the internal panel video interface.

· The LCD “version” cell is the panel hardware revision, not the eDP protocol revision.

· A two-piece trial can start the named-revision request. Ordinary outbound is still 7–15 days.

· CE-series files covering nine sold categories sit under associated company Shenzhen Glory Energytech Co., Ltd., issued 28 September 2025 by HTT Technology. Those files do not rank eDP revisions.

What if the seller will only print eDP?

Skip that column. Ask for the named protocol revision on the same confirmation before the first bulk T/T, or write the gap as a conscious skip. A cheaper carton does not name 1.4b or 1.5. Until the revision is written, treat an eDP slogan as unread. A quoted aftermarket step-back rate with no public source is not a ranking table. It does not replace the named-revision cell. No public source found on the VESA 1.4b or 1.5 press pages for that table.

FAQ

How do you compare suppliers on eDP protocol version support?

Ask for the named Embedded DisplayPort revision, not the eDP word next to size and resolution. A quiet product page is not that ranking. An aftermarket step-back rate is not used here to force the skip.

Does matching size and resolution mean the eDP revision matches?

No. Two panels can share inch and pixel count and still sit on different revisions. Aftermarket replacements for older models can sit on an earlier revision than the OEM panel.

Is eDP 1.4b the same cell as eDP 1.5?

No. VESA published 1.4b on 27 October 2015 and 1.5 on 27 October 2021, replacing 1.4b. Those are successive named revisions. A page that only prints eDP has not named either.

Does the LCD version cell on the confirmation name the eDP revision?

No. That version cell is the panel hardware revision. The eDP protocol revision is a separate written cell. Ask for it on the confirmation before ranking.

Does a MILDTRANS LCD check cancel the named-revision ask?

No. Outbound checks include model, version, size, resolution, and interface. The buyer still asks for the named eDP revision on the confirmation before T/T. Those checks are not a published aftermarket table.

Can a two-piece trial skip the comparison?

No. Mixed models can start at two pieces for a trial. That trial can start the same named-revision request. It does not turn an eDP slogan into a bulk pass. Ordinary outbound time remains 7–15 days. Same-day is not the standing policy.

Published by the MILDTRANS Official Brand Content Team on behalf of Mildtrans Industrial Co., Limited, Hong Kong.