LED display types
- LED transparent screen
LED transparent screen as the name suggests is a very good transparency display, mainly installed behind the glass, transparent LED display development has also derived many types of products, there are window LED transparent screen, sky curtain LED transparent screen, glass curtain wall LED transparent screen, etc., there is a glass position can be installed transparent screen.
- Floor tile LED display
The installation of LED display is not limited to installation on the wall, the use on the ground has also been routine, floor tile LED display is used by many hotels, shopping malls, bars and many other occasions. The biggest advantage is waterproof and moisture-proof, strong earthquake resistance.
- Sky screen LED display
Sky screen LED display is installed on the canopy screen, for the entire space to create a broader effect, sky screen LED display will generally be used in hotels, bars, KTV and other places.
- Special-shaped LED electronic display
Special-shaped LED display is also called creative LED display, conventional LED display is boxy, regular, and the installation location restrictions often require the shape of the screen body is not decent, such as round, triangle, semicircle, arc, cylindrical, conical, etc., the production of these products needs to redesign the circuit board, re-proofing design and debugging, the bar DJ booth is the most used.
- Interactive LED display
Now the LED electronic display has broken the function of rigid display video, and can already achieve human screen interaction and increase entertainment effects.
- Glass plank LED display
The glass plank road is made of tempered glass volley on the cliff to form a tourist suspension transparent glass plank, the glass plank road of the tempered glass load safety factor has been comparable to the traditional reinforced concrete soil, tourists no longer have to worry about safety, but also the basis of the commercialization of the glass plank. Now there are more and more application attractions of glass plank road LED display, such as Qingyuan Niuyuzui Glass Bridge, Five Finger Stone Glass Stack, Guishan Scenic Area Glass Suspension Bridge, Tianmen Mountain Glass Plank Road and so on.
LED display optional
Regarding the purchase of LED displays, many customers do not know how to buy cost-effective products, and many users collect and query this information on the Internet, but they always do not get satisfactory answers. So what are the factors that should be considered when choosing a display?
The first point: what is the aspect ratio of the general display?
1 . Graphic screen: determined according to the displayed content;
2 . Video screen: generally 4: 3 4:3 or close to 4 ：3; The ideal ratio is 16 : 9 .
The second point: what factors are generally considered in the size design of the display screen?
1 . The need to display content;
2 . Site space conditions;
3 . Display unit template size (indoor screen) or pixel size (outdoor screen).
The third point: Need to know the number of points that the control system can control?
Communication screen A card: monochrome, two-color 1024 × 64
Communication screen B card: monochrome 896: 896 ×512 bicolor: 896 × 256
DVI two-color screen: 1280 × 768
DVI full color screen: 1024 × 512
The fourth point: What are the power consumption indicators and power requirements of the display screen?
The power consumption of the display is divided into average power consumption and maximum power consumption. Average power consumption, also known as working electricity, is the actual power consumption in normal times. The maximum power consumption is the power consumption at startup or in extreme situations such as full brightness, and the maximum power consumption is the element that must be considered for AC power supply (wire diameter, switch, etc.). The average power consumption is generally 1/3 of the maximum power consumption. The display screen is a large precision electronic device, in order to use safely and reliably, its AC220V power input of the computer connected to it AC220V power input or the AC220V must be grounded.
The fifth point: What is the difference between the full-color screen of the indoor module and the full-color screen of the SMD?
1 . Light-emitting part: the display module of the module full-color screen is generally yellow-green, and the pure green module is more expensive; SMD full-color screens generally use pure green tube dies;
2 . Display effect: the visual perception of the pixels of the module full-color screen is coarse, the brightness is low, and it is easy to have mosaic phenomenon; The patch full-color screen has good consistency and high brightness;
3 . Maintenance: the module is not easy to maintain in full color, and the replacement cost of the whole module is high; The patch is easy to maintain in full color and can be repaired and replaced with a single lamp;
Point 6: Why is the production cycle of outdoor screens relatively long?
1 . Raw material procurement: LED lamp procurement cycle is long, especially imported tube core, the order cycle takes 4 4-6 6 weeks;
2 . The production process is complex: PCB PCB design, shell production, glue filling, white balance, etc.;
3 . Strict structural requirements: generally for the box design, windproof, rainproof, lightning protection, etc. need to be considered.
Point 7: What are the factors that need to consider the allowable screen area of the site?
1 . The relationship between effective visual distance and actual site size;
2 . Pixel size and resolution;
3 . The area estimation of the base number of the unit;
4 . Screen body mechanical installation and maintenance operation space;
5 . The influence of the inclination angle of the screen body on the distance;
Point 8: Need to understand what brightness requirements for the screen body are ambient brightness?
The general brightness requirements are as follows:
1 . Indoor: >800CD/M2
2 . Half room: >2000CD/m2
3 . Outdoor (sitting south facing north): > 4000CD/M2
4 . Outdoor (sitting north facing south): > 8000CD/M2
Under the condition of clear brightness and point density requirements, how to calculate the brightness of LED lamps?
The calculation method is as follows: (taking two red, one green and one blue as examples)
Red LED light brightness: brightness ( CD ) /M2/M2÷ points /M2 ××0.3 ÷ 2
Green LED light brightness: brightness ( CD ) /M2/M2÷ points /M2 × 0.6
Blue LED light brightness: brightness ( CD ) /M2/M2÷ points /M2 × 0.1
For example : 2500 dot density per square meter, 2R1G1B , and the brightness requirement per square meter is 5000CD/M2 , then:
The brightness of the red LED light is: 5000 ÷ 2500 × 0.30.3÷ 2=0.3
The brightness of the green LED light is: 5000÷ ÷2500 × 0.6=1.2
The brightness of the blue LED light is: 5000 ÷ 2500 × 0.1=0.2
The brightness of each pixel is: 0.3 × 2+1.2+0.2=2.0CD
Point 9: What are the effects of playback?
1 . Text display: depending on its text size and resolution needs;
2 . Ordinary video display: 320 × 240 dot matrix;
3 . Digital standard DVD display: ≥ 640 × 480 dot matrix;
4 . Complete computer video: ≥ 800 × 600 dot matrix;
Point 10: Need to understand the design and installation of outdoor displays?
1 . The joint between the screen body and the building must be strictly waterproof and leak-proof; The screen body should have good drainage measures, and once stagnant water occurs, it can be discharged smoothly;
2 . Install lightning protection devices on the display screen and buildings. The display body and shell are kept well grounded, and the grounding resistance is less than 3 ohms, so that the large current caused by lightning is discharged in time;
3 . Install ventilation equipment to cool down, so that the internal temperature of the screen body is between -10 °C °C ~ 40 . An axial fan is installed above the back of the screen body to discharge heat;
4 . Choose industrial-grade integrated circuit chips with working temperature between -40 °C ~ 80 °C to prevent the display screen from starting because the temperature is too low in winter.
5 . In order to ensure long-distance visibility in the case of strong ambient light, ultra-high brightness light-emitting diodes must be selected;
6 . The display medium adopts a new wide viewing angle tube, which has a wide viewing angle, pure color, consistent coordination, and a life of more than 100,000 hours. The outer packaging of the display medium is the most popular square cylinder with shielded edge, silicone sealed, and no metallized assembly; Its appearance is exquisite and beautiful, strong and durable, with the characteristics of “five prevention” of direct sunlight, dustproof, waterproof, high temperature and circuit short circuit.
