light sheet EL

Nanjing CI Lighting Co., Ltd. ,founded in 2015, which is a production platform under the Peking insititute of collaborative Innovation. Our company relies on Nanjing Reserch Institute and the intoduction of new materials of Peking University institute of scientific research achievements. We manufacturer EL wires, EL panels and related light-emitting materials, polymer dielectric materials. At present , the company has standard factory building 3000 square meters, with a number of highly qualified profeesionals and advanced instruments and equipments. The company has successfully deleloped a series of marketing leading EL wires, EL panels , which are international leading in brightness and lifespan.

EL (electroluminescent)poster; The size: 1200*800mm, the weight of driver: 200-300g; The size and the light region of product

is customized. Effect: Stable, Flashing, Gradient and so on.


Electroluminescent devices (EL), its working principle can be described as follows: First, inorganic

photoelectric materials such as particles of zinc sulfide are activated in the AC electric field driving by

AC voltage adding sandwiched between the poles. Second, the accelerated electrons within the

light-emitting layer (inorganic photoelectric materials) move at high speed to activate the atoms,

which are accelerated and gain enough energy. Third, the electrons excited by electric field will crash

the luminescence centers and fluorescence material, leading to the emitting of a kind of luminescence

with a high efficient, which results from the process of electron transition: leap-change recombination.

This is a physical phenomenon, namely electric excitation light phenomenon.


Technology

We use our modified flexible cyanoresin material as a binder, which is of high-performance,low-cost and soluble in acetone, g - butyrolactone, DMF, DMSO and other organic solvents. Its performance is

superior to the similar products on the market. This modified cyanoresin has a high dielectric property

and its ionic conductivity is enhanced as high as 2.4 x 10-3 S/cm when used as gel electrolyte. In the

organic-inorganic EL devices, its solubility in the organic solvents,elasticity and film forming ability can

be used totally.

The structure of EL panel is shown in figure 1, which thickness is about 0.2-0.5 mm, and it’s composed

by an insulating substrate coated (by screen printing) the electroluminescent materials and two layers

of electrodes, between which the insulating substrate is sandwiched. The brightness and color of the

light can be adjusted through the various luminescent materials, such as zinc sulfide and so on, and the

mixture of other activator, or fluorescent stain, etc. The frequency of AC electric field also can change the

color of the emitting light: the increase of the frequency will make the light shift towards the blue (short

wave) direction, and the decrease of the frequency will lead to the green (long wave) one. The original

color of the emitting light of the EL panel is generally for the green or turquoise at the voltage of 115V /400 Hz.


EL panel has a strong flexibility and the luminescence performance cannot be affected by bending except

wrecking the electrodes. Moreover, compared to the LED for point-source of light, EL panel can realize the

uniform surface light-emitting without guide plate and diffuser. In addition, EL electroluminescent system

has a lower power consumption.Although the EL panel needs to be driven by a higher voltage, the loading

current is very small, about 0.03 ~ 1 mA/cm2. Generally, as the area of EL panel is less than 10 cm2, only

a few mA working current is needed. However, 5 ~ 10 mA working current is needed just for one LED light,

so lower current is meaningful to the equipment driving by amount of battery power, and low power consumption

is considerable significance. From the view of electrical properties, EL panel can be considered to be a

container, and the capacitance is usually 2 ~ 6 nF/in2 (the better quality of EL panel, the smaller values of

the characteristic parameter of capacitance). The resistance value is usually 50 ~ 15000 k/in2, the driving

area and the maximum light intensity driven by the same driver is different due to the diversity of different

EL panels.

Advantages

a. Power-saving, short-wave light-emitting, no radiation, very brightness and eye-catching at night, able to

attract the attention of passers-by.

b.This product has strong light, far vision distance at night, strong attraction, strong ability to penetrate the

fog and vapor.

c. Ultra-thin, lightweight, simple fabrication and production process can lower the cost, manpower for high

efficiency.

d. Because the simple structure of device, easy diffusing ability, convenient advertising changing ability,

novelty and attractive, make it to achieve expected advertising effective easily.

e.Light weight: 0.2 grams per square centimeter; thin thickness: between 0.2 ~ 0.5 mm. power saving: just

80 W for one square meter piece of EL devices; high impact: affordable plane pressure up to 10 metric

tons per square meter.

f. Inorganic EL products can be tailored according to the customer’s requirements, because of the flexible

and clipping for special design and manufacture with different kinds of size and shapes.