Display lighting unit - Part 1-5: Electrical signal interface of LED BLU

IEC TR 62595-1-5:2022(E), which is a Technical Report, provides information for the future standardization of the electrical signal interface of LED backlight units for liquid crystal display television sets, which include control signals, control data and LED driver interface. This document only provides information about 2-D local dimming LED backlight units, with or without local boosting.
NOTE All values and parameters of this document are examples.

General Information

Status
Published
Publication Date
13-Dec-2022
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
19-Jan-2023
Completion Date
14-Dec-2022
Ref Project

Buy Standard

Technical report
IEC TR 62595-1-5:2022 - Display lighting unit - Part 1-5: Electrical signal interface of LED BLU Released:12/14/2022
English language
16 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)


IEC TR 62595-1-5 ®
Edition 1.0 2022-12
TECHNICAL
REPORT
colour
inside
Display lighting unit –
Part 1-5: Electrical signal interface of LED BLU
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Secretariat Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC Products & Services Portal - products.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 300 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 19 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TR 62595-1-5 ®
Edition 1.0 2022-12
TECHNICAL
REPORT
colour
inside
Display lighting unit –
Part 1-5: Electrical signal interface of LED BLU

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.120; 31.260 ISBN 978-2-8322-6269-6

– 2 – IEC 62595-1-5:2022  IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, and abbreviated terms . 6
3.1 Terms and definitions . 6
3.2 Abbreviated terms . 7
4 Electrical interfaces configuration . 7
4.1 General . 7
4.2 Basic configuration of LED blocks . 8
4.3 Overview of interface function . 9
5 Electrical characteristics and interface definition . 10
5.1 General . 10
5.2 Local dimming and boosting data interface . 10
5.2.1 General . 10
5.2.2 Pin configuration and electrical characteristics . 10
5.2.3 Local dimming and boosting data format . 10
5.2.4 Local dimming and boosting data signal timing . 11
5.3 Local dimming and boosting control signal interface . 12
5.3.1 General . 12
5.3.2 I C command format . 12
5.3.3 I C slave address . 12
5.3.4 I C register address . 12
5.4 Interface between LED BLU and the LED driver unit . 13
5.4.1 General . 13
5.4.2 Static mode . 13
5.4.3 Common cathode mode . 14
5.4.4 Common anode mode . 14
6 Future standardization . 14
6.1 General . 14
6.2 Configuration of LED matrix or LED strings . 15
6.3 Mini-LED BLU . 15
Bibliography . 16

Figure 1 – LCD-TV interface signal flow chart . 8
Figure 2 – Example of the effect on luminance of LED BLU with local boosting . 10
Figure 3 – Local dimming and boosting data format . 10
Figure 4 – Local dimming and boosting data signal timing . 11
Figure 5 – I C command format . 12
Figure 6 – Example of static mode LED backlight. 13
Figure 7 – Example of common cathode mode LED backlight . 14
Figure 8 – Example of common anode mode LED backlight . 14

Table 1 – Address map of the normal mode LED blocks (N rows, M columns) . 8
Table 2 – Address map of the reverse mode LED blocks (N rows, M columns) . 9

IEC 62595-1-5:2022  IEC 2022 – 3 –
Table 3 – Interface function . 9
Table 4 – Pin configuration and electrical characteristics . 10
Table 5 – Local dimming and boosting data signal timing . 11
Table 6 – I C slave address . 12
Table 7 – I C register address . 13

– 4 – IEC 62595-1-5:2022  IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DISPLAY LIGHTING UNIT –
Part 1-5: Electrical signal interface of LED BLU

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TR 62595-1-5 has been prepared by IEC technical committee 110: Electronic displays. It
is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
110/1445/DTR 110/1465A/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.

IEC 62595-1-5:2022  IEC 2022 – 5 –
A list of all parts in the IEC 62595 series, published under the general title Display lighting unit,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 6 – IEC 62595-1-5:2022  IEC 2022
DISPLAY LIGHTING UNIT –
Part 1-5: Electrical signal interface of LED BLU

1 Scope
This part of IEC 62595, which is a Technical Report, provides information for the future
standardization of the electrical signal interface of LED backlight units for liquid crystal display
television sets, which include control signals, control data and LED driver interface. This
document only provides information about 2-D local dimming LED backlight units, with or
without local boosting.
NOTE All values and parameters of this document are examples.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest ed
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.