ACX306BKM SONY [Sony Corporation], ACX306BKM Datasheet - Page 20

• Manufacturer Part Number: ACX306BKM
• Description: 3.86cm (1.5-type) NTSC/PAL Color LCD Panel Module with LED Backlight
• Manufacturer: SONY [Sony Corporation]

12. Backlight Center Luminance and Chromaticity Measurement Method
13. Backlight Luminance Uniformity Measurement Method
14. Backlight Life Measurement Method
1. Environmental conditions
2. Luminance and chromaticity measurement method
1. Environmental conditions
2. Light the backlight at Ifbl = 15mA using a constant current circuit, and start measurement 30s after the
Definition of life:
Lighting conditions: Discrete backlight under the following conditions.
Temperature: 25 ± 5°C
Humidity: 30 to 85%
Start measurement after leaving the module in the above environment for one hour.
Measurement should be performed in a dark room with a luminance of 10 lx or less and which is not
subject to the effects of reflective or external light.
There should be no heat insulating objects around the module unit, and measurement should be
performed in a draftless condition.
Measurement equipment: TOPCON BM-5A, viewing angle: 0.2°, distance: 450 ± 50mm
Measure 30s after the backlight is lit.
Using a constant current circuit, measure the luminance under both conditions of Ifbl = 15mA and
20mA, and measure the chromaticity under only the condition of Ifbl = 15mA.
Measure under the same conditions as "12. Backlight Center Luminance and Chromaticity Measurement
Method" above.
backlight is lit.
Backlight luminance uniformity is obtained by dividing the effective pixel area into 9 equal sections as
shown below, measuring the luminance at each of the centers 1 to 9, and calculating Min. luminance ÷
Max. luminance
When the backlight center luminance drops to 50% of the initial value.
Leave the module in a normal temperature (25°C) environment for one hour before
performing optical measurement.
(1) Ifbl = 15mA
(2) Ifbl = 20mA
100 [%].
1-1) Continuous lighting at an ambient temperature of 55°C. (5000h or more)
1-2) Continuous lighting at an ambient temperature of 70°C. (1000h or more)
2-1) Continuous lighting at an ambient temperature of 40°C. (5000h or more)
2-2) Continuous lighting at an ambient temperature of 65°C. (1000h or more)
Effective pixel area of the panel
– 20 –
1/3
1
4
7
1/3
2
5
8
1/3
3
6
9
ACX306BKM