CCFL Lamp Sample Quality Control Manual

BriteView provides detail quality control manuals for all components. Below is sample of what is included in a typical manual.



The product CCFL I26-350, is designed as the light source for backlight module of a 7" LCD monitor, and its color chromaticity are set at X=0.30±0.0 1; Y=0.285±0.01.

Lighting Principles

BriteView's CCFL is made of miniature hard-glass tube, which is spread with high-performance tri-color fluorescent powder on its inner surface and filled in idle-gad & less of mercury vapor. When powered it on, the gas was dissociated to stimulate the mercury vapor and emission out 253.7nm ultra-violet rays, and then changed to visible light when passed through fluorescent coating layer.

Product Characteristics
  • High luminance & efficiency, low power consumption, compact size and long life.
  • Good impact absorbability, start ability & repeatability
  • Ability to be instantly started on under 0.1 Lx illuminations.
  • Color temperature tri-colors can be adjusted to customer's requirements.

LCD monitor backlight source.

Ambient conditions for applications
  • For operation:
  • Temperature: 0~60°C
  • Relative humidity: 20~90%
  • No condensation or iced on lamp surface.
  • For storage:
  • Temperature: -30~70°C
  • Relative humidity: 5~90%
  • No condensation or iced on lamp surface.
  • Do not bend both-ends electrodes, or it may influence vacuum characteristics and break-down the lamp.
  • Do not bend, curve, or shock on lamps or it may be broken.
  • The average life may be shortened when using lamps in low temperature (<0°C) environments.
  • To prevent electric-shock, do not touch both-ends electrodes of lamps while it is powered on.
  • The welding of wires to electrode should be finished in a short time in order to prevent the overheating and breakage of lamps.
  • Do not look at lamp for a long time when lighting; doing so may hurt eyes.

Testing Instruments & Conditions

Testing Instruments
  • Milli-ampare meter: INSTEK GDM-8246A
  • RMS meter: INSTEK GDS820C
  • High-voltage probe: TEK P6015A
  • Luminance meter; TOPCON BM-7
Testing Conditions
  • Temperature:25±2°C
  • Relative humidty:65%±20%(no wind)
  • Start testing after lighting 5 minutes.
  • Do not misconnect the positive/negative poles of inverter.
  • Do not touch instruments while on or testing

Basic Specifications

Size and Dimensions size and dimesions Materials List
No. Part Names Materials Remarks
1 Electrode guide-pin Ni -
2 Glass tube Hard-glass -
3 Fluorescent Powder Tri-Colors
Fluorescent Powder
4 Filling gas Ne+Ar -
5 Electrode Ni -
6 Degasnater Al-Zr -
7 Rubber cap - -
8 Connector - -
9 Wire assy - -
Initial Characteristics
No. Items Specifications Remarks
1 Color temperature 8000k(ref.) Tube current at 5mA
2 Color chromaticity X=0.300±0.01
Checking the central section of lamps with TOPCON BM-7
3 Main ray wave length R=611
Checking the central section of lamps at tube current 5mA
4 Tube current 5mA Measured with GDM-8246
5 Tube voltage 690V±10%ms Measured with TOPCON BM-7
6 Power (ref.) 3.45W At input voltage 12VDC
7 Surface luminance 33000±10%cd/m2 Measured with TOPCON BM-7
8 Effective lighting length 300mm Total length of lamp which luminance over 80% of it at central section
9 Startup voltage 1050 Vrms max. At ambient temp. 25±2°C
10 Startup time 500ms max. Testing after lain in room temp. 25±2°C for 2 hrs later
11 Stable discharging time 3min 100% luminance at lamp central section after power on 5 minutes
12 Life 25000hrs Ambient without wind
13 Dimension OD=2.6±0.1mm
Lamp length 350±1.0mm
Testing conditions for luminance & chromaticity
  • Tube current: SmA
  • Frepuency: 50±l0kHz
  • Instrument: TOPCON BM-7 0.1° field angle.
  • Testing distance:5000±50mm
  • Environments: Ambient temperature 25±2°C, R.H 35~85% without wind & light
  • Testing time: To do testing after power on 3 minutes

Testing Schematics

Lamp Current Testing lamp current
  • Wire length of A-B: 150±10mm
  • Wire length of C-D:300±10mm
  • Measurement item: Lamp current
  • Instruments: Lamp current milli-ampare meter GDM-8246
Lamp Voltage Testing lamp voltage
  • Wire length of A-B: 150±10mm
  • Wire length of C-D:300±10mm
  • Measurement item: Lamp voltage
  • Instruments: RMS meter GDS-820C & high voltage probe TEK P6015A
Brightness & Chromaticity lamp brightness

Luminance meter: TOPCON BM-7 field 0.1°

  • Tube current: 5mA
  • Frequency: 50±10kHz
  • Instrument: TOPCON BM-7 field 0.1°
  • Testing distance: 500±50mm
  • Environments: Ambient temperature 25±2°C, R.H. 35~85% without wind & light
  • Testing time: To do testing after power on 3 minutes

Life Testing

Judging conditions

If one of the following conditions occurred, the lamp life is over:

  • The luminance of lamp central section becomes less than 50% of initial value.
  • Starting voltage is higher than the rated voltage.
Testing Items
Test Rated Life
Rated Life
Ambient temperature: normal(25°C) ≥ 25,000 hrs
Current: 5rnA
Power on frequency: continuous
Low Temperature Life
Ambient temperature: 0°C±1°C ≥ 500 hrs
Current: 5rnA
Power on frequency: continuous
On-off life
Ambient temperature: normal(25°C) ≥ 200,000 hrs
Current: 5mA
Power on frequency: l0 sec. on and 10 sec. off
Application Environments
Items Specifications Remarks
Operation temperature 0°C~60°C No Condensation
Storage temperature -30°C~70°C No Condensation
Relative humidity 90% No Condensation

Reliability Testing

Lamps need to fulfill the following reliability tests items:
No. Items Conditions Specifications
1 Impact testing 6.3.1 C,E
2 vibration testing 6.3.2 C,E
3 Terminal tensil strength testing 6.3.3 C,E
4 Heat-cycle testing 6.3.4 A,C,D,E
5 High temperature & humidity testing 6.3.5 A,B,C,D,F
6 High temperature testing 6.3.6 A,C,D,F
7 Low temperature testing 6.3.7 A,B,C,D,F
8 High temperature & humidity operation testing 6.3.8 A,B,C,D,F
9 Seal up testing 6.3.9 C,D,E
10 Snaking testing 6.3.10 G
11 Low temperature operation testing 6.3.11 A,B,C,D,F
  • According to paragraph 6.3 to do each testing
  • The details of specifications are listed in paragraph 6.2
  • No lighting during each testing except No. 3,8,11
Judging conditions

After reliability testing, the characteristics of testing lamps must meet the following requirements:

  • Startup voltage: No over 10% of initial value.
  • Luminance: At least 50% of initial value.
  • No mechanical or physical damage (e.g. nickel guide pin broken)
  • No visible distortion, color changing, etc.
  • No lamp can light up.
  • The luminance should be up to 95% of it stability, after it has been powered on 3 minutes.
  • No darken or color changing in appearance, or lighting is not normal (such as flicking, smacking, etc.)
Testing Conditions
  • Impact testing:
  • Pulse wave of 30G, llm/sec2 should be applied three times each in X,Y,Z directions. The lamp should be held on the testing fixture.
  • Vibration test:
  • Acceleration 19.6m/sec2, frequency 20-500-20Hz be applied in 3 minutes each time, and each In X,Y,Z directions for l hour. Be careful to prevent resonant point.
  • Terminal wire intensity test:
  • Tube axial load: l kg
  • Time: 5 sec.
  • Heat-cycle test:
  • Operating 10 cycles as following condition
  • testing conditions
  • High-temperature & humidity storage test:
  • Temperature: 70±2°C
  • Humidity: 90±5%R.H
  • Time: 500 hrs
  • The lamps should be preserved at room temperature for 2 hrs before doing function testing.
  • High temperature storage test:
  • Temperature: 70±2O°C (Dry)
  • Time: 1000hrs
  • The lamps should be preserved at room temperature for 2 hrs before doing function testing.
  • Low temperature storage test:
  • Temperature: -30°C ±2O°C
  • Time: 1000hrs
  • The lamps should be preserved at room temperature for 2 hrs before doing function testing.
  • High-temperature & humidity operating test:
  • Temperature: 40±°C
  • Humidity: 90%R.H
  • Time: 5mA
  • Current: 5mA
  • Current: 5mA
  • Sealed test:
  • Sampling 40pcs dipped in the boiling water(>95°C) for 10 sec, then dipped in 4°C water for 10 sec. Doing cycle 3 times. All samples should be passed, if there is one fail, do the Next test again.
  • Snaking test:
  • Temperature: 50±2°C
  • Time: 24hrs
  • Current: 5mA
  • The lamps should be preserved at >0°C ±2 temperature for 2 hrs before doing function testing.
  • Low-temperature operation test:
  • Temperature: 0±1°C Time: 5mA The lamps should be preserved at room temperature for 2 hours before doing function testing.

Inspections & AQL (Acceptable Quality Level)

Lamp Quality Control

In order to control the lamp's quality, according to CNS 2779 Z4006 table II -A ~single sampling plans of normal inspection to do the quality control.

  • Bad quality: Snaking, flicker, crack (No external force)
  • Light bad quality: Fluorescent coating cracked & peeled off


  • Hg stuck on inner wall of tube is normal.
  • Light black color of two end-sides of glass tube is normal.
  • Fluorescent coating peeled off in 15mm from two end-sides is not counted.
Inspection Items AQL Inspection Methods
Appearance of Lighting Bad quality AQL<0.4
Light bad quality AQL<0.5
Mechanical dimensions N=5, C=0 Measuring tools
Initial characteristics N=5, C=0 (AQL 0.4) According to 3,4 paragraph

Packing & Marking

According to the packing requirement standards of BriteView Technologies Inc.