The relationship between the price and the quality of the Electroluminescent Panel
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Electroluminescent Paint Spray Technology and Materials
EL
Phosphor
Germany A High Brightness
Germany B Normal Long Lifetime
China C Long Lifetime
China D Normal
Explanation
Grade
Price (USD)
No
No
1-10 grade
11-12 grade
The life stability range of each grade is 5-15%, according to the cost, artificial mixture is adjusted at any time.
Lifetime
Half-lifetime >3000hr
Full lifetime >10000hr
Half-lifetime 2000hr
Full lifetime >5000hr
Full lifetime 3000-100hr
Full lifetime 10-5hr
Professional detection: humidity is 95%, temperature is 80 degrees and discontinuous work for 3-50hr to detect black spot.
Brightness
100-150
Cd/m2
80-120
Cd/m2
80-120
Cd/m2
100-130
Cd/m2
Poor quality products are often claimed with high brightness and long lifetime. Increasing brightness is achieved by changing the power of electronic device. This way can not solve the problem of stability.
Anti voltage breakdown
A class standard Voltage is 180-440V
B class standard Voltage is 180V
C class standard Voltage is 160V
D class standard Voltage is 140V
Determined by the material and technology, short life materials are prone to heat, breakdown, inflammable and explosive batteries.
Application
Indoor and outdoor.
Indoor
Indoor and disposable
Disposable
The adjustment is based on the using seasons, different regions, customer requirements, cost and so on.
Failure rate
<0.3%
<2%
<10%
Heat,breakdown, fast aging and has black spots.
<18%
Sparks from short circuit and circuit breakage.
Uncontrollable and unpredictable.The unilateral defects of EL panel or inverter cause unstable coordination among them.
The proportion of cost
70%
40%
30-20%
10%
The selection of EL phosphor is the main factor of the different price of EL panel.
Solving method
1.Looking at the purchase contract of EL phosphor.Cheap prices are mainly derived from low quality EL phosphor.Low quality product not only has a high failure rate,but also the safety factor is low.Even DC3V is prone to breakdown and lead to fire.
2.Provide the documentary evidence of intellectual property rights.The counterfeit and inferior products have no research and intellectual property rights, especially the enterprises have no patent (Privately holding patents in China can evade mandatory safety testing and do not bear legal liability)
3.Provide the case of undertaking government projects.The large EL panel can be mass produced, the small EL panel is stable, and the public product has strict requirements.
4.Provide the quality inspection report in China.Because purchasers do not have professional and testing conditions, poor quality products are often claimed with high brightness and long lifetime. Increasing brightness is achieved by changing the power of electronic device. This way can not solve the problem of stability. Therefore, low price and high brightness products are common sales pitfalls. Low price profits must come from low quality raw materials.
5.Data measuring condition identification: Low quality and high brightness is obtained from high voltage and high frequency.While lifetime is obtained at low voltage and low frequency.The description is obtained from different test conditions, and only describes the brightness and life expectancy that buyers like.
6.Identify whether the manufacturer has professional technical history and inheritance,whether to cooperate with large retail enterprises to embody its quality control capability and enterprise value orientation. The risk of a businessman is not to sell fast and earn less,but has no the security of legal.
7.Low price and high quality products do not exist. If the procurement budget is low, the cost can be reduced by special luminescence design.Longer lifetime and higher brightness need other design ,accept or reject and a high level of technical team.
Other factors
Environmental protection materials and general materials; Surface dyes and inverter.
Safety test: The stability of inverter.High voltage and high frequency lead to a rapid increase in brightness and a significant reduction in lifetime.
Intellectual property: KPT has 120 authorized patents in China and the United States.The data obtained in accordance with international standard AC115V\400Hz conditions. Market data are non - standard using AC112-140V, 800-1000Hz. |