GB/T 39930-2021Organic light emitting diode (OLED) panels for general lighting - Performance requirements (English PDF)

3.1 Initial values

The measured optical and electrical parameter values of the unused OLED panel after stabilization.

3.2 Averageluminance

The arithmetic average of the brightness of multiple areas in the light-emitting area of the OLED panel in a specific direction.

3.3 Brightness uniformity

The value used to quantify the brightness change of the light-emitting area of an OLED panel Example:

OELR260mA2.3W30-007A represents the rigidity of rated current 260mA, rated power 2.3W, correlated color temperature 3000K, and design serial number 007A OLED panel for general lighting.

5.1 General test conditions

In addition to other regulations, the photoelectric parameter test of the OLED panel should be at an ambient temperature of 25°C±1°C and a maximum relative humidity of 65%.

It is carried out in a non-convection environment of 1 standard atmospheric pressure. The life characteristic test should be at an ambient temperature of 25°C±5°C, the maximum relative humidity It is carried out in a non-convection environment of 65%, 1 standard atmospheric pressure.

Except for other provisions in this standard, the test should be carried out at the rated current. The test current should be stabilized within the range of ±0.5% of the rated current Inside, the total harmonic content input should not exceed 3%.

Unless otherwise specified by the manufacturer, the test panel shall be installed horizontally or vertically during the test. The flexible OLED panel should be fixed to the table On a rigid flat plate with a flat surface, it is ensured that it does not deform during the entire test process. The installation method of the OLED panel during the test shall be recorded.

5.2 Stable

The stabilization of the OLED panel should be carried out in a non-convection environment with an ambient temperature of 25°C±1°C and 1 atmosphere.

In the constant current mode, the OLED panel should be lit under specified conditions, and the input current should be stable within ±0.5%. In stability In the process, the actual voltage of the OLED panel is measured at an interval of at least 1 min/time. For example, within 5 minutes, the OLED panel voltage reading is the largest If the difference between the value and the minimum value is less than 0.5%, the OLED panel has reached a stable state and can be tested.

6.1 Dimensions

The external dimensions of the OLED panel should conform to the manufacturer's declared value, but the actual measured value should be within the tolerance range specified by the manufacturer.

6.2 Initial electrical performance

The power of the OLED panel should conform to the manufacturer's declared value, and the actual measured value should not be greater than 110% of the declared value.

6.3 Initial optical performance

6.3.1 Luminous flux

The luminous flux of the OLED panel should meet the manufacturer's declared value, and the actual measured value should not be less than 90% of the declared value.

6.3.2 Light effect

The luminous efficiency of OLED panels is classified according to its power (P), which should not be less than the regulations in Table 2.

b) When the OLED panel is lit for 6000h, its luminous flux maintenance rate should not be less than 75%.

Note: The luminous flux is less than 70% (L70) of the initial luminous flux as the end of service life.

6.5 Reliability test

6.5.1 High temperature and high humidity working test

The OLED panel works for 48 hours at 60°C and 90% relative humidity, and the luminous flux after the test should not be less than 90% of the luminous flux before the test.

6.5.2 High temperature and high humidity storage test

The OLED panel is stored for 500h at 60°C and 90% relative humidity. The luminous flux of the OLED panel after the test should not be less than the light before the test 90% of flux. After the OLED panel is tested, it is energized and checked, and there is no appearance defect (such as black spots) with a diameter greater than 0.5mm.

7.1 Dimensions

The dimensions of the OLED panel are measured with a measuring tool with an error of no more than 0.02mm.

7.2 Electrical performance

Carry out according to 5.1 of GB/T 24824-2009.

7.3 Initial optical performance

7.3.1 Luminous flux

The OLED panel should be lit under specified conditions and tested after it is stable. According to GB/T 26178-2010 and refer to Appendix A.

7.3.2 Light effect (Eff)

Measure the power of the OLED panel according to 7.1 and measure the luminous flux of the OLED panel according to 7.3.1, and calculate the luminous efficiency according to formula (1). (1) Where. Eff---light effect; Phi --- luminous flux; P --- Power.

7.3.3 Color characteristics

The color coordinates can be measured by the method of 7.3.1 spectral data, and the color coordinates and correlated color temperature can be calculated according to the method given in CIE15.2004.

7.3.4 Color rendering index

According to GB/T 26180-2010.

7.3.5 Average brightness (Lav)

The average brightness of the OLED panel is the arithmetic average of the brightness of 9 test points. For the test method, see Appendix B.

The OLED panel should be lit under the specified conditions, and after stabilization, use a brightness meter to test the brightness of 9 points in the light-emitting area. Among them, rectangular OLED

A.1 General

There are two typical methods for measuring luminous flux. one is the spherical photometer method using an integrating sphere, and the other is the light distribution using a goniometer.

Measurement methods. When using the integrating sphere measurement method, there are two methods. 2 pi method and 4 pi method.

A.2 Integrating sphere measurement

A.2.1 Installation location

In the integrating sphere, the OLED panel should be placed in the center of the integrating sphere. This is to maintain the uniformity of the integrating sphere's illumination. On this side In the method, in addition to the light emitted from the surface, the light emitted from the side will also be measured, which satisfies the definition of luminous flux.

A.2.2 Integrating sphere size

In the 4 pi structure, the total surface area of the OLED panel should be less than 2% of the total area of the integrating sphere wall. The longest physical size of a linear product should be Less than 2/3 of the diameter of the integrating sphere.

In the 2 pi structure, the diameter of the opening where the OLED panel is installed should be less than 1/3 of the diameter of the integrating sphere.

If the OLED size exceeds these values, it can be measured with a smaller light source, and preferably a similar smaller OLED. first First, place the small light source in the center for measurement, and then place the small light source on the edge of the large-size OLED panel for measurement.

Line measurement. If the difference in the measurement results is less than 1%, the large-size OLED panel can be measured with this integrating sphere, and no additional Correction.

If the error exceeds 1%, the integrating sphere needs to be calibrated according to this size of OLED. The recommended method for this calibration is to use a distribution Type photometer to measure OLED. After calibration, this integrating sphere can be used to measure OLEDs of this size.

It should be noted that for low-brightness OLEDs and small-size OLEDs, because they emit less light in the integrating sphere, the measurement may not be correct. accurate.

A.3 Goniophotometer measurement

According to GB/T 26178-2010.

It is difficult to measure large-size OLED panels with an integrating sphere. In this case, it is appropriate to use a Goniophotometer to measure. Of course However, the Goniophotometer also has problems when measuring all the light emitted from the side. A reliable calibration method is under consideration.