CENELEC
Project
| Reference | EN 61747-4:2012 |
|---|---|
| Title | Liquid crystal display devices - Part 4: Liquid crystal display modules and cells - Essential ratings and characteristics |
| Project Number | 23933 |
| Abstract/Scope | IEC 61747-4:2012 describes the essential ratings and characteristics of LCD cells and passive matrix monochrome liquid crystal display modules. It does not apply to active matrix LCD cells nor to multicolour cells. This edition includes the following significant technical changes with respect to the previous edition: - 2.1 and 3.1 of IEC 61747-4:1998 were deleted because these items are defined in IEC 61747-1; - 2.7.6, in 2.7, Supplementary information, of IEC 61747-4:1998 was deleted because the scope of this standard is about passive matrix monochrome liquid crystal display modules; - The item 'Gray scale: digital or analog' in 2.3.1 of IEC 61747-4:1998 was changed to 'Gray scale: number' because it is more accurate; - Contrast mode: light symbol on dark background ('LOD' or 'positive image') or dark symbol on light background ('DOL' or 'negative image') was introduced in this part of IEC 61747 to replace the description in 2.3.1 and 3.3.1 of IEC 61747-4:1998. |
| Status |
Published
|
Status
| Current Stage code | 6060 |
|---|---|
| Current Stage code date | 2012-12-14 |
| Current Stage code deadline | 2013-07-31 |
| Deadline date for vote |
Legal
| Directive(s) | |
|---|---|
| Mandate(s) | |
| Order Voucher |
Details
| IEC Technical Body | IEC/TC 110 |
|---|---|
| Reference Document | IEC 61747-4:2012 (EQV) |
| ICS | 31.120 - Electronic display devices |
| Keywords | Liquid crystal; Solid-state display device; Display module; Cell; Essential rating |
| Note | Supersedes EN 61747-4:1998 * 2012-10-09: Publication editing allocated to cpalagi@cencenelec.eu |
| A-Deviation(s) | |
| Special National Condition(s) |
Environment
|
Clause
|
Categories - Aspects
|
Product Life Cycle
|
Information
|
|---|
History
Implementation Dates
| date of Ratification (DOR) (1) | 2012-10-31 |
|---|---|
| date of Availability (DAV) (2) | 2012-12-14 |
| date of Announcement (DOA) (3) | 2013-01-31 |
| date of Publication (DOP) (4) | 2013-07-31 |
| date of Withdrawal (DOW) (5) | 2015-10-31 |
Relations
| Supersedes | EN 61747-4:1998 |
|---|---|
| Superseded by | |
| Normative reference (6) |
EN 61747-1:1999
|
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
