GB/T 18910.12-2024 English PDFUS$759.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 18910.12-2024: Liquid crystal display devices - Part 1-2: Terminology and symbols Status: Valid
Basic dataStandard ID: GB/T 18910.12-2024 (GB/T18910.12-2024)Description (Translated English): Liquid crystal display devices - Part 1-2: Terminology and symbols Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: L53 Classification of International Standard: 31.120 Word Count Estimation: 38,370 Date of Issue: 2024-04-25 Date of Implementation: 2024-08-01 Older Standard (superseded by this standard): GB/T 18910.11-2012 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 18910.12-2024: Liquid crystal display devices - Part 1-2: Terminology and symbols---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.ICS 31:120 CCSL53 National Standards of People's Republic of China Replaces GB/T 18910:11-2012 Liquid crystal display devices Part 1-2: Terms and symbols Released on 2024-04-25 2024-08-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface III Introduction V 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 3:1 Physical Concepts 1 3:2 General terms 4 3:3 Terminology concerning parameters, ratings and characteristics, image quality, and reliability testing 10 3:4 Other components 16 4 Units and symbols16 Appendix A (Informative) Comparison table of structure numbers between this document and IEC 61747-1-2:2014 19 Index 21 Figure 1 Schematic diagram of pixel pitch 5 Figure 2 Schematic diagram of defining the inclination angle θ and the azimuth angle φ11 Figure 3 Power supply voltage description block diagram 13 Figure 4 Response time sequence diagram 14ForewordThis document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting: This document is Part 1-2 of GB/T 18910: GB/T 18910 has been published in the following parts: --- Liquid crystal display devices Part 1-1: General specification (GB/T 18910:11); --- Liquid crystal display devices Part 1-2: Terms and symbols (GB/T 18910:12); --- Liquid crystal display devices Part 2: Liquid crystal display module specification (GB/T 18910:2); --- Liquid crystal display devices Part 2-1: Passive matrix monochrome liquid crystal display module blank detail specification (GB/T 18910:21); --- Liquid crystal display devices Part 2-2: Blank detail specification for color matrix liquid crystal display modules (GB/T 18910:22); --- Liquid crystal display devices Part 3: Liquid crystal display panel specification (GB/T 18910:3); --- Liquid crystal display devices Part 4: Basic ratings and characteristics of liquid crystal display modules and panels (GB/T 18910:4); --- Liquid crystal display devices Part 4-1: Basic ratings and characteristics of color matrix liquid crystal display modules (GB/T 18910:41); --- Liquid crystal and solid state display devices Part 5: Environmental, durability and mechanical test methods (GB/T 18910:5); --- Liquid crystal display devices Part 6-1: Test methods for photoelectric parameters of liquid crystal display devices (GB/T 18910:61); --- Liquid crystal display devices Part 6-2: Test methods for liquid crystal display modules - Reflective type (GB/T 18910:62); --- Liquid crystal display devices Part 6-3: Test methods for liquid crystal display modules Motion artifacts in active matrix liquid crystal display modules (GB/T 18910:63); --- Liquid crystal display devices Part 10-1: Environmental, durability and mechanical test methods Mechanical (GB/T 18910:101); --- Liquid crystal display devices Part 10-2: Environmental, durability and mechanical test methods Environment and durability (GB/T 18910:102); --- Liquid crystal display devices Part 20-1: Visual inspection of monochrome liquid crystal displays (GB/T 18910:201); --- Liquid crystal display devices Part 20-2: Visual inspection of monochrome matrix liquid crystal display modules (GB/T 18910:202); --- Liquid crystal display devices Part 20-3: Visual inspection of active matrix color liquid crystal display modules (GB/T 18910:203): This document replaces GB/T 18910:11-2012 "Liquid Crystal Display Devices Part 1-1: Terms and Symbols" and GB/T 18910:11- Compared with:2012, in addition to structural adjustments and editorial changes, the main technical changes are as follows: a) Changes to the alignment layer, chiral nematic phase, film-compensated super-twisted nematic phase liquid crystal display, crystal domain, spacer, thin film transistor liquid crystal display display, sub-pixel, alphanumeric display, polarizer, off time, on time (see 3:1:6, 3:1:10, 3:1:31, 3:1:32, 3:1:41, 3:2:6, 3:2:10, 3:2:20, 3:2:51, 3:3:26:1, 3:3:26:2, see GB/T 18910:11-2012 2:1:6, 2:1:10, 2:1:31, 2:1:32, 2:1:41, 2:2:6, 2:2:10, 2:2:20, 2:2:53, 2:3:28:1, 2:3:28:2): b) Changed the substrate, liquid crystal, thermotropic liquid crystal, dichroic liquid crystal, director, orientation layer, electrode layer, surface alignment, chiral nematic phase, mesophase, ferroelectric liquid crystal, antiferroelectric liquid crystal, clearing point, guest-host effect, polymer dispersed liquid crystal, disclination, liquid crystal display device, liquid crystal Display modules, alphanumeric displays, segment displays, transflective displays, normally black, normally white, black matrix, rear projection Display, front projection display, color filter, common electrode, data electrode, polarizer, semi-transmissive reflector, matrix addressing, contrast, Design observation direction, optimal observation direction, addressing duty cycle, aperture ratio, diffuse illumination, multi-channel drive, closing time, opening time The terms and definitions of time, fall time, delay time, transient afterimage, flicker, and line defect (see 3:1:1, 3:1:2, 3:1:3, 3:1:4, 3:1:5、3:1:6、3:1:7、3:1:9、3:1:10、3:1:14、3:1:17、3:1:18、3:1:20、3:1:24、3:1:34、3:1:36、3:2:1、 3:2:3、3:2:20、3:2:21、3:2:27、3:2:30、3:2:31、3:2:32、3:2:34、3:2:35、3:2:38、3:2:39、3:2:40、 3:2:51, 3:2:53, 3:3:3, 3:3:4, 3:3:8, 3:3:9, 3:3:10, 3:3:11, 3:3:17, 3:3:20, 3:3:26:1, 3:3:26:2, 3:3:26:4, 3:3:26:5, 3:3:27, 3:3:30, 3:3:36, see 2:1:1, 2:1:2, 2:1:3, 2:1:4、2:1:5、2:1:6、2:1:7、2:1:9、2:1:10、2:1:14、2:1:17、2:1:18、2:1:20、2:1:24、2:1:34、2:1:36、 2:2:1, 2:2:3, 2:2:20, 2:2:21, 2:2:26, 2:2:28, 2:2:29, 2:2:30, 2:2:32, 2:2:33, 2:2:36, 2:2:37, 2:2:38, 2:2:53, 2:2:55, 2:3:3, 2:3:4, 2:3:8, 2:3:9, 2:3:10, 2:3:11, 2:3:19, 2:3:22, 2:3:28:1, 2:3:28:2, 2:3:28:4, 2:3:28:5, 2:3:29, 2:3:32, 2:3:38): c) Added achromatic display, (self-)luminous display, support plate, visual inspection, LCD edge strength, LCD surface strength, production line, production Batch terms and definitions (see 3:2:25, 3:2:29, 3:2:60, 3:2:61, 3:3:40, 3:3:41, 3:3:42, 3:3:43): d) Added other component terms (see 3:4): e) Image polarity and transmittance (see 2:3:12 and 2:3:17 of GB/T 18910:11-2012) have been deleted: This document is modified to adopt IEC 61747-1-2:2014 "Liquid crystal display devices Part 1-2: Common terms and text symbols": Compared with IEC 61747-1-2:2014, this document has many structural adjustments: See Appendix A for a list: The following editorial changes were made to this document: --- In order to coordinate with the existing standards, the name of the standard is changed to "Liquid Crystal Display Devices Part 1-2: Terms and Symbols"; --- Added informative Appendix A; --- Delete "the purpose is to use the same terminology when published in different countries" in Chapter 1, and supplement the scope of application; --- To facilitate the understanding of the definitions of some terms, two schematic diagrams are added, and Figures 1 and 2 of IEC 61747-1-2:2014 are postponed to Figures 3 and 4: Please note that some of the contents of this document may involve patents: The issuing organization of this document does not assume the responsibility for identifying patents: This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China: This document is under the jurisdiction of the National Technical Committee for Standardization of Electronic Display Devices (SAC/TC547): This document was drafted by: China Electronics Technology Standardization Institute, Shanghai Tianma Microelectronics Co:, Ltd:, Xiamen Metrology Verification and Testing Institute, Hisense Visual Technology Co:, Ltd:, BOE Technology Group Co:, Ltd:, Tianma Microelectronics Co:, Ltd:, TCL Huaxing Optoelectronics Technology Co:, Ltd:, Sichuan Saidi Information Technology Co:, Ltd: The main drafters of this document are: Zhao Ying, Ling Zhihua, Ruan Yujiao, Qiao Mingsheng, Zhang Zhigang, Huang Weidong, Zhou Haiqin, Wang Feixia and Xiao Hong: The previous versions of the documents replaced by this document are as follows: ---First published in 1986 as GB/T 6250-1986; ---First revised in:2012 to GB/T 18910:11-2012;IntroductionIn order to meet the production, manufacturing, inspection and import and export needs of liquid crystal display devices in my country, a series of standards for liquid crystal display devices have been formulated: GB/T 18910 “Liquid Crystal Display Devices” is intended to consist of the following parts: --- Part 1-1: General specification: The purpose is to specify the general procedures for the inspection of liquid crystal display devices and to give the electro-optical characteristics test method: General requirements, requirements for climatic, mechanical and durability tests: --- Part 1-2: Terms and symbols: The purpose is to define the preferred terms, definitions and text symbols for liquid crystal display devices: --- Part 2: Liquid crystal display module section specification: The purpose is to specify the quality assessment procedures and inspection requirements required for evaluating liquid crystal display modules: requirements, screening sequences, sampling requirements, details of tests and test methods: --- Part 2-1: Passive matrix monochrome liquid crystal display module blank detail specification: The purpose is to specify the format and summary page requirements: The minimum requirements and detailed specifications: --- Part 2-2: Blank Detailed Specification for Color Matrix Liquid Crystal Display Modules: The purpose is to specify the format and summary page and detailed The requirements for the most basic content of the specification: --- Part 3: Liquid crystal display screen specification: The purpose is to specify the quality assessment procedures and inspection requirements required for evaluating liquid crystal display screens: requirements, screening sequences, sampling requirements, tests and test methods: --- Part 3-1: Liquid Crystal Display (LCD) Screen Blank Detailed Specification: The purpose is to define the quality assessment system for LCD screens: --- Part 4: Basic ratings and characteristics of liquid crystal display modules and panels: The purpose is to specify liquid crystal display panels and passive matrix monochrome Basic ratings and characteristic requirements of LCD display modules: --- Part 4-1: Basic ratings and characteristics of color matrix liquid crystal display modules: The purpose is to specify the basic ratings and characteristics of color matrix liquid crystal display modules: Basic ratings and characteristic requirements of the block: --- Part 5: Environmental, durability and mechanical test methods: The purpose is to evaluate the environmental performance of liquid crystal display devices and to determine uniform The preferred test method and preferred value of stress level: --- Part 6-1: Test methods for electro-optical parameters of liquid crystal display devices: The purpose is to specify the standard for electro-optical parameters of liquid crystal display devices: Standard test conditions and test methods: --- Part 6-2: Test method for liquid crystal display module reflective type: The purpose is to specify the detailed quality of reflective liquid crystal display modules Evaluation procedures, inspection requirements, screening procedures, sample requirements, and test and measurement procedure requirements: --- Part 6-3: Liquid crystal display module test method Active matrix liquid crystal display module motion artifacts: The purpose is to specify the transmissive General quality assessment procedure for motion picture performance of thin film transistor liquid crystal display devices: --- Part 6-4: Test methods for liquid crystal display modules Liquid crystal display modules with dynamic backlight: The purpose is to specify the Standard test conditions and test methods for the optical performance and power consumption of active-matrix liquid crystal display modules: --- Part 10-1: Environmental, durability and mechanical test methods Mechanical: The purpose is to evaluate the mechanical properties of liquid crystal display devices It is possible to determine a unified optimal test method and optimal value of stress level: --- Part 10-2: Environmental, durability and mechanical test methods Environmental and durability: The purpose is to evaluate the performance of liquid crystal display devices: Environmental performance, determine the unified optimal test method and stress level optimal value: --- Part 10-3: Environmental, durability and mechanical test methods for glass strength and reliability: The purpose is to specify liquid crystal display devices Test methods for strength and reliability of glass: --- Part 20-1: Visual inspection of monochrome liquid crystal displays: The purpose is to specify the visual inspection method for monochrome liquid crystal displays: --- Part 20-2: Visual inspection of monochrome matrix liquid crystal display modules: The purpose is to specify the visual inspection of monochrome matrix liquid crystal display modules method: --- Part 20-3: Visual inspection of active matrix color liquid crystal display modules: The purpose is to give the visual inspection of transmissive active matrix color liquid crystal display modules by the human eye: Detailed requirements and general rules for the quality assessment procedure for visual inspection of liquid crystal display modules: Liquid crystal display devices Part 1-2: Terms and symbols1 ScopeThis document defines the preferred terms, definitions and text symbols for liquid crystal display devices: This document applies to the production and use of segment-type, passive or active matrix, color or non-color liquid crystal displays and liquid crystal display modules:2 Normative referencesThis document has no normative references:3 Terms and definitions3:1 Physical Concepts 3:1:1 Substrate A flat transparent substrate made of glass or plastic plate and covered with several functional layers (electrodes, sealing and surface orientation layers) to form a liquid crystal screen: Mechanical structure: 3:1:2 Liquid crystal Mesophase materials are composed of elongated (rod-like) or disc-like molecules with at least one molecular axis oriented in a long-range order: 3:1:3 A material whose liquid crystal phase changes with temperature within a certain temperature range: 3:1:4 Liquid crystals have dichroism, that is, they absorb light anisotropically: 3:1:5 Director A unit vector representing the orientation direction of liquid crystal molecules: 3:1:6 Orientation layer alignmentlayer A thin layer of inducing material is made on the substrate to make the liquid crystal molecules form a fixed orientation direction on the substrate surface: The sub-forms directional alignment and pre-tilt angle: Note: Liquid crystal molecules can form homeotropic alignment (3:1:8) and planar alignment (3:1:9) on the substrate surface: 3:1:7 Electrode layer A conductive layer covering the substrate, usually transparent, that enables graphic display and power-on functions: NOTE: The electrode layer can be indium tin oxide (ITO): ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 18910.12-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 18910.12-2024_English as soon as possible, and keep you informed of the progress. 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