- 8 - IEC61747-20-2:2015@IEC2015 Table1-Defects and criteria when display not activated Defects Rejection criteria Spots (see Figure 1), bubbles, foreign particles light/dark stains on light To be specified in the detail background, light/dark stains on dark background specification Scratches on the ligquid crystal cell and on the polarizer within the To be specified in the detail specified viewing direction range specification Mechanical damage outside of the viewing area To be specified in the detail specification Accumulation of the above-listed visible defects To be specified in the detail specification Visible structure of the electrodes within the viewing area Reference samples Non-uniformity of luminance and colours within the viewing area of the Reference samples Dirt on surface, e.g. finger prints, adhesive residue Reference samples B A IEC A = bezel B = viewing area C = defect h = height w = width Figure 1-Defects within the viewing area IEC61747-20-2:2015@IEC2015 -9 - 4.2.2 Displayactivated 4.2.2.1 Overall geometricalaspectofthedisplay (seeFigures2and3) 4.2.2.1.1 General The defects of the geometrical aspect are shown in Figures 2 and 3. Figure2-Deviationsandmis-shapesofasquarepictureelement Figure3-Notchededgesofpictureelements 4.2.2.1.2 Test conditions The test conditions of visual inspection for the display activated shall be described for the following conditions: electrical driving conditions; illumination; ambienttemperature. - 10 - IEC61747-20-2:2015@IEC2015 Procedure 4.2.2.1.3 Devices shall be inspected in conformity with the detail specification in Tables 2 and 3. Table2-Properties and criteriawhen display activated Properties Rejection criteria Dimension of picture elements Not in conformity with the detail specification Shape of picture elements Not in conformity with the detail specification Table3-Defects and criteriawhen display activated Defects Rejection criteria Missing picture elements Not in conformity with the detail specification Unwanted picture elements Not in conformity with the detail specification Activation of the picture elements Not in conformity with the detail specification Seal edge within viewing area Not in conformity with the detail specification 4.2.2.2 Visibledefectoftheviewingarea 4.2.2.2.1 General The defects of the viewing area are shown in Figure 4. IEC h = height w = width Figure4-Defectswithintheelementsandtheirsurroundings