T/GDSM 001-2019 Active Group standards

T/GDSM 001-2019 Flexible display emission characteristics detection method

Publish Date: 2019-03-13 Implement Date: 2019-06-12 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/GDSM 001-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Fire fighting

ICS Name: Integrated Metrology and Measurement

Publish Date: 2019-03-13

Implement Date: 2019-06-12

Scope

Scope: This standard specifies the measurement requirements and test methods for the luminance characteristics of active light-emitting flexible displays. This standard applies to flexible displays that can be bent or twisted once or multiple times. Main technical content: 5.1.1.1 Adjustment of display state: After bending or twisting, the flexible display should remain intact and display normally. Adjust the flatness of the flexible display so that its normal line direction is perpendicular to the probe of the measurement device. 5.1.1.2 Adjustment of brightness and contrast: Use the extreme eight-gray-level signal shown in Figure 1 to adjust. Among them, the full black field level is 0%, the full white field level is 100%, and the first row of gray levels is: 0%, 5%, 10%, 15%; the second row of gray levels is: 85%, 90%, 95%, 100%, used to adjust the contrast and brightness controllers to the maximum position. If the two gray levels of 100% and 95% in the second row can be distinguished, this state is the test state. If they cannot be distinguished, reduce the contrast until they can be accurately distinguished. If the 100% and 95% white-gray levels can never be distinguished, reduce the contrast to 95% and 90% gray levels, which can be accurately distinguished. Repeat this process until the number of white-gray levels is the largest. Figure 1: Extreme eight-gray-level signal 5.1.1.3 Color control and peripheral devices: All color controls (hue, saturation, etc.) of the flexible display should be adjusted to the factory default values, and no external devices, including USB hubs or ports, should be connected. 5.1.1.4 Preheating time: The flexible display should be preheated for more than 30 minutes before the test to ensure stable performance. 5.1.2 Bending count measurement: Before each bending count measurement, the flexible display should be adjusted to the unfolded state. Use an electronic counting tachometer to record the number of bends. 5.1.3 Bending radius