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GB/T 18910.201-2021: Liquid crystal display devices - Part 20-1: Visual inspection - Monochrome liquid crystal display cells
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 18910.201-2021 | English | 234 |
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Liquid crystal display devices - Part 20-1: Visual inspection - Monochrome liquid crystal display cells
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GB/T 18910.201-2021
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Basic data | Standard ID | GB/T 18910.201-2021 (GB/T18910.201-2021) | | Description (Translated English) | Liquid crystal display devices - Part 20-1: Visual inspection - Monochrome liquid crystal display cells | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L53 | | Word Count Estimation | 13,170 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 18910.201-2021: Liquid crystal display devices - Part 20-1: Visual inspection - Monochrome liquid crystal display cells
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Liquid crystal display devices - Part 20-1.Visual inspection - Monochrome liquid crystal display cells
ICS 31.120
L53
National Standards of People's Republic of China
Liquid crystal display device
Part 20-1.Visual inspection of monochrome LCD screen
[IEC 61747-20-1.2015, Liquidcrystaldisplaydevices-
Released on 2021-10-11
2022-05-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Table of contents
Foreword Ⅲ
1 Scope 1
2 Normative references 1
3 Terms, definitions and abbreviations 1
3.1 Terms and definitions 1
3.2 Abbreviations 1
4 Visual inspection methods and standards 1
4.1 Standard test conditions and methods 1
4.1.1 Environmental conditions 1
4.1.2 Testing equipment and LCD screen 2
4.1.3 Visual inspectors and limit samples 2
4.1.4 Inspection and record results 2
4.2 Display visual inspection 2
4.2.1 No power state 2
4.2.2 Power-on state 3
4.2.3 Seal inspection 5
4.2.4 Visual inspection of electrode lead area 6
4.2.5 Visual inspection of corner defects on the electrode side of the screen 7
Reference 9
Foreword
GB/T 18910 "Liquid Crystal Display Devices" has or plans to publish the following parts.
---Part 1-1.General Specification;
---Part 1-2.Terms and symbols;
---Part 2.Sub-specification of liquid crystal display modules;
---Part 2-1.Blank detail specifications for passive matrix monochrome liquid crystal display modules;
---Part 2-2.Blank detailed specifications for color matrix liquid crystal display modules;
---Part 3.Sub-specification of LCD screens;
---Part 3-1.Detailed specifications for LCD blanks;
---Part 4.Basic ratings and characteristics of liquid crystal display modules and screens;
---Part 4-1.Basic ratings and characteristics of color matrix liquid crystal display modules;
---Part 5.Environmental, durability and mechanical test methods;
---Part 6-1.Photoelectric parameters of liquid crystal display device test methods;
---Part 6-2.Liquid crystal display module test method reflective type;
---Part 6-3.Liquid crystal display module test method active liquid crystal display module motion artifacts;
---Part 6-4.Liquid crystal display device test method liquid crystal display module with dynamic backlight;
---Part 10-1.Environmental, durability and mechanical test methods machinery;
---Part 10-2.Environment, durability and mechanical test methods environment and durability;
---Part 20-1.Visual inspection of monochrome LCD screen;
---Part 20-2.Visual inspection of monochromatic matrix liquid crystal display module;
---Part 20-3.Visual inspection of active matrix color liquid crystal display modules.
This part is part 20-1 of GB/T 18910.
This part was drafted in accordance with the rules given in GB/T 1.1-2009.
The translation method used in this part is equivalent to IEC 61747-20-1.2015 "Liquid Crystal Display Device Part 20-1.Visual Inspection of Monochromatic Liquid Crystals"
Display screen (not including active matrix liquid crystal display)".
This section has made the following editorial changes.
---The standard name was changed to "Liquid Crystal Display Device Part 20-1.Visual Inspection of Monochrome Liquid Crystal Display".
Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying these patents.
This part was proposed by the Ministry of Industry and Information Technology of the People's Republic of China.
This part is under the jurisdiction of the National Flat Panel Display Device Standardization Technical Committee (SAC/TC547).
Drafting organizations of this section. Tianma Microelectronics Co., Ltd., China Electronics Standardization Institute, Shanghai Tianma Microelectronics Co., Ltd.
Division, BOE Technology Group Co., Ltd., Southeast University.
The main drafters of this section. Zhou Haiqin, Zhao Ying, Ling Zhihua, Zhang Zhigang, Li Xiaohua.
Liquid crystal display device
Part 20-1.Visual inspection of monochrome LCD screen
1 Scope
This part of GB/T 18910 specifies the visual inspection method for monochromatic liquid crystal display screens.
Mirror, detailed regulations and general rules for visual inspection of the non-display area and display area of a monochrome LCD screen. In addition, this section includes missing
Method of defect definition and visual inspection of defects.
Note. The limitation on the type, quantity and size of defects is stipulated in the quality contract (customer acceptance specification and incoming material inspection specification).
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 18910.102-2021 Liquid crystal display device Part 10-2.Environmental, durability and mechanical test methods
Durability (IEC 61747-10-2.2014, IDT)
IEC 61747-1-2.2014 Liquid crystal display devices Part 1-2.General terms and text symbols (Liquidcrystaldisplay
devices-Part 1-2.Generic-Terminologyandlettersymbols)
3 Terms, definitions and abbreviations
3.1 Terms and definitions
The terms, definitions and text symbols defined by IEC 61747-1-2.2014 and GB/T 18910.102-2021 apply to this document.
3.2 Abbreviations
The following abbreviations apply to this document.
DUT. device under test (deviceundertest)
4 Visual inspection methods and standards
4.1 Standard test conditions and methods
4.1.1 Environmental conditions
4.1.1.1 Temperature
All visual inspections should be carried out under specified temperature conditions, in accordance with Chapter 4 of GB/T 18910.102-2021.
4.1.1.2 Humidity
All visual inspections should be carried out under specified humidity conditions, in accordance with Chapter 4 of GB/T 18910.102-2021.
4.1.1.3 Illumination
All visual inspections should be carried out under the illuminance level specified in the detailed specification, and the illuminance should be adjusted to enable accurate visual inspections
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