Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology

At present, AMOLED display technology has become a technology that many consumers pay attention to. Samsung's mobile phone has been using this kind of screen, but it is difficult to promote it. The large-screen display field is hard to find the large-screen AMOLED device. Why? Below we may wish to introduce this unique display technology.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
Approaching AMOLED
AMOLED is a kind of OLED display technology, also called active matrix OLED display technology. AMOLED is the abbreviation of English AcTIve-matrix organic light emitTIng diode. The full name of Chinese is active matrix organic light emitting diode or active matrix organic light emitting diode. The AMOLED screen has three layers of structure, AMOLED screen + TouchScreenPanel (touch screen panel) + outer protective glass. AMOLED is a kind of OLED technology. OLED stands for self-luminous display, which uses multiple layers of organic compounds to realize independent R, G and B colors. Super AMOLED has the highest score in determining the color metrics of color reproduction - color gamut and color fidelity. The WQXGA-class HD screen also received "ExcellentA" for outdoor visibility, which gives GALAXYTabS outstanding visibility under outdoor glare.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
The principle of illumination of AMOLED
AMOLED screens have evolved into many different versions, such as AMOLED, SuperAMOLED, SuperAMOLEDPlus, and SuperAMOLEDAdvanced. The basis of AMOLED is an organic illuminant. Thousands of light sources that can only emit one of red, green or blue are placed on the substrate of the screen in a specific form. When a voltage is applied, red, green or blue light is emitted. The voltage change also depends on the TFT. After adjusting the ratio of the three primary colors, various colors can be emitted.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
Faster pace of development
As the practical application of AMOLED is faster, it has become the mainstream OLED technology, which inherits the characteristics of energy saving, ultra-thin and flexible of OLED materials, but the current development is not mature, due to the problem of the lifetime of blue OLED luminescent materials. If it is not solved, it will affect the life of the display screen as a whole, and it is also due to this problem, the color of the screen also has problems (the reason why the blue OLED material is not used frequently), so the defect causes life, color and cost disadvantage. So that AMOLED can not be promoted. And this problem has also seriously affected the process of large-scale AMOLED. The life expectancy of large-scale equipment is higher. Although the current technology can make the life of AMOLED screen more than 10,000 hours, it is obviously more demanding for equipment such as TV. High, can not solve the life problem, a lot of evaporation of some blue OLED materials, can solve this problem to a certain extent, but the blue OLED has too many components, the color of the picture can not be guaranteed, so AMOLED large-scale encounter "difficult to produce ".
After discussing the principle and development of AMOLED, we then analyze the advantages and disadvantages of AMOLED display technology. AMOLED has thinner, lighter, active illumination without backlight, no viewing angle, high definition, high brightness and fast response. The utility model has the advantages of low energy consumption, wide temperature range, strong earthquake resistance and soft display, and many of the characteristics are difficult to realize by the TFT liquid crystal panel. The following continues to recognize the AMOLED display technology.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
Insufficient Super AMOLED
Samsung has always used Super AMOLED screens on its flagship model. This is one of AMOLED's excellent display technologies. However, the evaluation of Super AMOLED is controversial. Super AMOLED is not Samsung's own invention and exclusive. The thing is just because Samsung has accumulated a lot of experience and technology in the large-scale production of TFT-LCD screens, plus a lot of money for the development of OLEDs and frequent use of Super AMOLED screens on its own products, which leads people to think that Super AMOLED is Samsung's unique technology. Super AMOLED has been criticized for several reasons. The first is that the color reproduction is not as good as the IPS screen. Samsung's Super AMOLED screen says that the color of the graphics is often thick and colorful, too full, and the color is vulgar, but This is actually caused by Samsung's deliberately adjusting the color of the screen to cater to the taste of the public. To please the eye, or to focus on the restoration of color, this is a personal favorite problem, in fact, has little to do with the screen.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
The early Super AMOLED screens had a burn-in phenomenon. The so-called burn-in screen means that if the screen displays a certain still image for a long time, it will leave a residual image. The early Super AMOLED screen did have this problem, but with the continual evolution and development of OLED screens, this phenomenon has become less and less. Samsung's screen has been sprayed with PGB-type lattice arrangement. The PGB-type lattice arrangement is arranged relative to the RGB-type lattice array, and the graininess is stronger. This problem is particularly obvious in the era of 720P and lower resolution. But on the 1080p screen of the Galaxy S4, this problem has been solved to a large extent. The Galaxy S5's screen is more reasonable than the Galaxy S4's screen-type dot matrix arrangement. This problem is no longer the short board of Super AMOLED.
Analysis on the Advantages, Disadvantages and Development Status of AMOLED Display Technology
The future of flexible OLED panel development in technology zone is still the key issue of packaging and bending resistance reliability. Apple will develop the display screen to develop the next generation of MicroLED. Amoled is not without backlight. _amoled detailed explanation (principle, structure, process flow) Skyworth OLED TV Technology breakthrough _ launching the future form of OLED TV AMOLED flexible screen changes to smart home is far more thorough than imagined

Surge Protection Device SPD

Product Description


SPD Surge Protective Device,Lightning Surge Protector
Surge Protection Device (SPD)


It is a device used to limiting instant surge voltage and discharge surge current, it at least including a non-linear component.

Surge protective Device Model Selection

With the impact of international information flow, the rapid development of microelectronic science and technology, communication, computer and automatic control technology, make the building start to go for high quality, high functional area, formed a new building style-intelligent building. As inside the intelligent building there are lot of information system, <<Building lightning protection design norm>> GB50057-94(2002 vision)(hereafter brief as <<lightning protection norm>>) put forward the relative requirement to install the surge protective device, to ensure the information system safely and stable running.
SPD essentially is a equipotential connection material, its model selection is according to the different lightning protection area, different lightning electromagnetic pulse critical and different equipotential connection position, decide which kind of SPD used in the area, to achieve the equipotential connection with the common earth electrode. Our statement will based on SPD's maximum discharge current Imax, continuous operating voltage Uc, protection voltage Up, alarm mode etc.
As per << Lightning Protection Norm>> item 6.4.4 stipulation "SPD must can withstand the expected lightning current flow and should confirm to the additional two requirements: the maximum clamp voltage during surge across, capable to extinguish the power frequency follow-on current after lightning current across." That is the value of SPD's max. clamp voltage add its induction voltage of two ends should be same with the system's basic insulation level and the equipment allowed max. surge voltage.

SPD for Power Supply System Series Selection Guide

The installation of SPD at each lightning protection zone, according to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category, its insulation withstand impulse voltage level can determine the selection of SPD. According to the standard of low voltage electrical appearance, make classification of electrical equipment in accordance with the over voltage category as signal level, loading level, distribution and control level, power supply level. Its insulation withstand impulse voltage level are:1500V,2500V,4000V,6000V. As per to the protected equipment installation position different and the different lightning current of different lightning protection zone, to determine the installation position of SPD for power supply and the break-over capacity.
The installation distance between each level SPD should not more than 10m, the distance between SPD and protected equipment should as short as possible, not more than 10m. If due to limitation of installation position, can't guarantee the installation distance, then need to install decoupling component between each level SPD, make the after class SPD can be protected by the prior class SPD. In the low voltage power supply system, connecting an inductor can achieve the decoupling purpose.
SPD for power supply system specification selection principle
Max. continuous operating voltage: bigger than protected equipment, the system's max. continuous operating voltage.
TT System: Uc≥1.55Uo (Uo is low voltage system to null line voltage)
TN System: Uc≥1.15Uo
IT System: Uc≥1.15Uo(Uo is low voltage system to line voltage)
Voltage Protection Level: less than the insulation withstand impulse voltage of protected equipment
Rated discharge current: determined as per to the lightning situation of the position installed and lightning protection zone.
SP1 Series

Normal Working Conditions
-Altitude not exceed 2000m
-Ambient air temperature:
Normal range: -5ºC~+40ºC
Extend range: -40ºC~+80ºC
-Relative Humidity: 30% - 90% under indoor temperature condition
- At the place without obviously shaking and shock vibration
- Non-explosion danger medium, non-corrosion gas and dust ( including conductive dust)

Classification

-As per Nominal Discharge Current:
5,10,20,30,40,60KA(8/20µs)
- As per Maximum continuous operating voltage:
275V,320V,385V,420V,440V,460V
- As per to poles
1P,1P+N,2P,3P,3P+N,4P
- As per auxiliary functions:
a. With remote signal output ( remote alarm function)
b. Without remote signal output

Selection Principle

- The continuous applied voltage on the two terminals of SPD should not more than the maximum continuous operating voltage Uc value;
- The voltage protection level Up of SPD should less than the maximum impulse withstand voltage of the protected equipment;
- As per to the different earthing system and protection mode to select the specification accordingly;

Product Features

1, built-in over-current overheating, temperature control circuit technology.

2, the module design, easy installation, online replacement.

3, low leakage current, fast response time, low residual voltage.

4, alarm indication device, green (normal) v red (fault).

Model/Technical Parameters WR-B60 WR-B80 WR-B100 WR-B120 WR-B150
Rated Operating Voltage Un (V ~) 220V 380V 220V 380V 220V 380V 220V 380V 220V 380V
Maximum Continuous Operating Voltage Uc (V ~) kV 385V 420V 385V 420V 385V 420V 385V 420V 385V 420V
Voltage Protection Level Up (V ~) kV ≤1.8≤2.2 ≤2.4≤2.5 ≤2.5≤3.2 ≤3.4≤3.7 ≤4.0≤4.5

Maximum Discharge

Current Imax(8/μ20μs)kA

60 80 100 120 150

Nominal Discharge

Current In(8/μ20μs)kA

30 40 60 80 100
Response Time <25 <100
L/N(mm²)The Cross Section Of L/N Line 16,25 16,25 16,25 16,25 25,35
PE (mm²)The Cross Section Of PE Line 16,25 25,35 25,35 25,35 35
Fuse or Switch (A) 63A 63A 63A,100A 63A,100A 63A,125A
The Line Section of Communication and Alarm (mm²) ≥ 1.5

Operating

Environment-C

(-40ºC~-+85ºC)
Relative humidity 25 ºC ≤95%
installation Standard Rail35mm
Material of Outer Covering Fiber Glass Reinforced Plastic

Surge Protector SPD,Surge Protection Device SPD,SPD

Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjaccontactor.com