- 6 - IEC61747-4-1:2014@IEC2014 LIQUIDCRYSTALDISPLAYDEVICES- Part 4-1: Matrix colour LCD modules - Essential ratings and characteristics 1 Scope This part of IEC 61747 describes the essential ratings and characteristics of matrix colour liquid crystaldisplay (LCD)modules 2 Normative references The following documents,in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies.For undated references, the latest edition of the referenced document (including any amendments)applies. IEC 61747-1-1,Liquid crystal display devices-Part 1-1:Generic-Generic specification Matrix colour liquid crystal display modules 3.1 Principles and material used Example: a thin film transistor (TFT) (amorphous silicon, polycrystalline silicon, oxide, organic) activematrixdisplaycellwithelectroniccircuitsandconnectorpins Where appropriate, a type of integrated light source 3.2 Modes of operation 3.2.1 Addressing mode of operation Example: passive matrix, active matrix, TFT mode, thin film diode (TFD) mode, etc. 3.2.2 Optical mode of operation Illumination mode:forexample reflective, transmissive,transflective. Number of colours. Number of grey levels. Normally white, normally black. 3.3 Details of outline 3.3.1 Material, mechanical description Examples: glass, plastic, metal, etc. Construction:for example integrated light source,bezel structure. 3.3.2 Methodof connection Connectors, flex cable or connection pins, etc. IEC 61747-4-1:2014IEC 2014 7 - 3.3.3 Outline drawing and dimensions Overall dimensions. Viewing area and display centre. 3.3.4 Pin layoutand/orassignment Type of connectors. 3.3.5 Preferred or designed viewing direction 3.4 Limiting values (absolute maximum rating system) over the operating temperature range,unless otherwisestated 3.4.1 Minimum and maximum ambient operating temperature (Top) 3.4.2 Minimum and maximum storage temperature (Tstg) 3.4.3 Minimum and maximum value of supply voltages for logic and LcD drive or supply voltage(s) for module 3.4.4 Minimumandmaximumvalueof input signal voltage(Vin) 3.4.5 Where appropriate,minimum and maximum value of integrated light source voltage (VLs) 3.4.6 Where appropriate, maximum soldering temperature (Tsd) The maximum soldering time and minimum distance to module package should be specified. 3.5 Electrical and optical characteristics The following characteristics should be specified in Table 1. Table1-Electricaland optical characteristicsof matrixcolourLcDmodules Reference Characteristics Condition at Top = 25 Symbol Requirements unless otherwise Specified 3.5.1 Supplyvoltages YoD - Vss Supply voltage for logic drive Min. Max. Supply voltage for LCD drive VDD - VE Min. Max. pr VEE- Vss pr Vpp - Vo pr Vo- Vss Supply voltage(s) for module VMDL Min. Max. 3.5.2 Input signal voltages ViN Min. Max. High level input signal voltage VINH Min. Max. Low level input signal voltage VINL Min. Max. Input analogue video signals Min. Max. VID where appropriate) 3.5.3 Operating backlight voltage VBL Min. Max. (where appropriate) Discharge ignition voltage of backlight (where appropriate) Min. BLIG IEC61747-4-1:2014IEC2014 - 8 - Reference Condition at Top = 25 Characteristics Symbol Requirements unless otherwise specified 3.5.4 Operating frequency op where appropriate) Framefrequency Min. Max. FRM Oscillator frequency Min. Max. Osc Supply currents (without Conditions chosen to achieve 3.5.5 backlight) Max. maximum supply current,.e.g. operating supplyvoltagedisplay pattern, etc.,as appropriate. DD 3.5.6 High level input signal current INH Max. where appropriate) 3.5.7 Low level input signal current Max. INL where appropriate) 3.5.8 Min. Operating backlight current BL Max. (where appropriate) 3.5.9 Contrast ratio CR Min. When the module has a light source system,this system shall be used at a specified level during the contrast ratio measurements 3.5.10 Specified measuring method and Min. Luminance whereappropr