2013年01月22日
LED Display Purchase & FAQs
What are the factors of the screen can be allowed to consider the user's premises area?
(1) The relationship of the the valid horizon and the actual field size;
(2) Pixel size and resolution;
(3) Unit base area is estimated;
(4) Screen mechanical installation and maintenance operations space;
(5) Screen angle distance.
The playback user needs what?
(1) The text: depending on the text size and differentiate needs;
(2) Video: 320 × 240 dot matrix;
(3) Digital standard DVD: ≥ 640 × 480 dot matrix;
(4) A complete computer video: ≥ 800 × 600 dot matrix;
Ambient brightness Screen brightness requirements?
The general brightness requirements are as follows:
(1) Indoor:> 800CD/M2
(2) Semi-indoor:> 2000CD/M2
(3) Outdoor (look northward):> 4000CD/M2
(4) Outdoor (sit facing south):> 8000CD/M2
Red, green and blue in white constitute what brightness requirements?
Red, green, blue and white couplers aspect contribution is not the same. The fundamental reason is due to the retina of the human eye
Film is different for different wavelengths of light feeling caused. After a large number of experimental test following about proportion, for the reference design:
Simple red, green and blue brightness ratio: 3:6:1
Precise red, green and blue brightness ratio: 3.0:5.9:1.1
Why the high-end full-color screen to use pure green tube?
Actual LED display production of high luminous efficiency but also to obtain rich vibrant color rendering three-color LED lamp, so that the area of a triangle of color in the chromaticity diagram as much as possible in and close to the tongue-shaped spectral color curve, to meet the rich color and giving sufficient brightness and tongue-shaped curve leading to 515nm wavelength light wavelength close to 515nm pure green light LED tube end LED display selection, such as selection of 520nm, 525nm or 530nm wavelength light LED lamp .
Clear luminance and dot density conditions, how the brightness of the single-tube computer?
Calculated as follows: (two red, one green, one blue)
The red LED lamp brightness: brightness (CD) / M2 ÷ points /, M ² × 0.3 ÷ 2
Green LED lamp brightness: brightness (CD) / M2 ÷ Points / M2 × 0.6
Blue LED lamp brightness: brightness (CD) / M2 ÷ Points / M2 × 0.1
For example: 2500 points per square meter density 2R1G1B, per square meter brightness requirements for 5000 CD/M2, then:
The red LED light brightness: 5000 ÷ 2500 × 0.3 ÷ 2 = 0.3
Green LED lamp brightness: 5000 ÷ 2500 × 0.6 ÷ 2 = 1.2
Blue LED lamp brightness: 5000 ÷ 2500 × 0.1 = 0.2
The brightness of each pixel point: 0.3 × 2 +1.2 +0.2 = 2.0 CD
Why choose DVI display interface standard?
(1) Display Interface DVI display card interface is in line with the computer with international standards;
(2) Do not need to open the case, and to facilitate the installation;
(3) Memory, dynamic screen display capabilities;
(4) The ability of software and hardware compatible;
(5) Support all operating systems and application software, and flexibility;
(6) Mass production, low cost, easy maintenance.
Display with a laptop can control, and why?
Can not. Laptop graphics card built-in connection to the control system can not be realized, the BOE currently have a laptop with DVI interface, can achieve a notebook control.
Full Color use Nichia tube homemade pipe in addition to price what is the difference?
(1) Die: Nichia independent production die, the domestic pipe usually die in the United States or Taiwan;
(2) Package: Nichia's own package, no domestic production plants, more homemade pipe packaging manufacturers;
(3) Consistency: Nichia tube the same batch die wavelength difference is small, good consistency, consistency of homemade pipe is relatively poor;
(4) Life span: Nichia tube relatively long life, the homemade pipe attenuation is more serious;
Indoor module full color screen with SMD LED Full Color What is the difference?
(1) Light-emitting part: module full color screen display modules are generally more expensive as yellow-green, pure green module prices; SMD full color screen generally use pure green die;
(2) Display: module full color pixel visual feeling coarse, low brightness, easy mosaic phenomenon; SMD full color screen better consistency and higher brightness;
(3) Maintenance: module full color difficult to maintain, the entire module replacement costs; SMD full color easy to maintain, the single lamp repair and replacement;
Outdoor screen can paste table LED, and why?
Can not. The demanding outdoor screen installation structure, SMD LEDs unable to adapt to the harsh environment of the outdoors;
The higher outdoor screen brightness SMD LED outdoor screen brightness requirements can not be achieved.
Outdoor screen long production cycle Why?
(1) Procurement of raw materials: LED Lamp procurement cycle longer, especially imported die, order cycle takes 4-6 weeks;
(2) A complex production process: subject PCB design, casing production, filling plastic, tune white balance;
(3) Strict structural requirements: general cabinet design, wind, rain, lightning, etc. should be considered.
How to help the user to select the appropriate display?
(1) The need to display the content of;
(2) Visual distance perspective confirmation;
(3) Screen resolution requirements;
(4) To install environmental requirements;
(5) The cost of control;
The display's aspect ratio is how much?
The teletext screen: determine the content displayed;
Video screen: 4:3 or close to 4:3; ideal ratio of 16:9.
A control system capable of controlling the number of points?
Communication screen A card: monochrome, color 1024 × 64
Communication screen B card: the monochromatic: 896 × 512 two-color: 896 × 256
DVI color screen: 1280 × 768
DVI full color display: 1024 × 512
The design of the display size generally consider what factors?
In the design screen body size, there are three important factors:
(1) The need to display the content of;
(2) Floor space conditions;
(3) The display unit template size (indoor screen) or pixel size (outdoor screen).
The display should be added more than 10 kilowatts buck boot device.
Communication requirements: communication distance is long communication lines defined.
Model to display the installed communications line length standard used to install a communications line.
Prohibited and power lines of communication lines in the same line pipe alignment.
Installation requirements: screen installed around the level, do not allow backward
Lifting to the installation of the upper and lower adjustment lever
To be installed before the wall-mounted forward off the hook
Floor installation to add positioning support bolts.
Display power consumption indicators and power requirements?
The power consumption of the display is divided into the average power consumption and maximum power consumption. Average power consumption is also known as the work of power, it is usually the actual power consumption. The maximum power consumption is the power consumption during startup or full bright extreme cases, the maximum power consumption is the factor of the AC power supply (diameter, switches, etc.) must be taken into account. The average power consumption is generally 1/3 of the maximum power consumption.
The display is a large-scale precision electronic equipment, AC220V power input or its associated computer AC220V power input terminal must be grounded for safe use and reliable work.
Note: The computer AC220V power input ground terminal is connected to the computer chassis.
Display installation requirements?
Power requirements: power supply wiring point should be the size of the screen body within
220V mains powered Firewire 0 line ground wire;
380V mains powered Firewire 10 line ground wire;
The FireWire and 0 line wire cross-sectional area of the same;
The display should be added more than 10 kilowatts buck boot device.
Communication requirements: communication distance is long communication lines defined.
Model to display the installed communications line length standard used to install a communications line.
Prohibited and power lines of communication lines in the same line pipe alignment.
Installation requirements: screen installed around the level, do not allow backward
Lifting to the installation of the upper and lower adjustment lever
To be installed before the wall-mounted forward off the hook
Floor installation to add positioning support bolts.
The design and installation of outdoor screen what issues should be considered?
Outdoor screen as follows:
(1) Screen installed outdoors, often exposed to the sun and rain, wind and dust cover, poor working conditions. Electronic equipment wet or excessive moisture can cause a short circuit or even a fire caused by the failure or even fire, resulting in the loss;
(2) The display may be affected by the strong electric magnetic attacks caused by lightning;
(3) The ambient temperature changes greatly. Display the work itself must produce a certain amount of heat, if the ambient temperature is too high heat and bad, the integrated circuit may not work properly, or even destroyed, so that the display system does not work;
(4) Wide audience, the line-of-sight requirements far and wide vision requirements; ambient light changes, in particular, may be exposed to direct sunlight.
Outdoor display must be done for the above special requirements:
(1) Screen and Screen with the construction of the junction must be strictly waterproof caulk; the screen body must have good drainage measures, in the event of a smooth water emissions;
(2) On the screen and buildings to install lightning protection devices. Display main body and cover a good grounding resistance is less than 3 ohms, caused by lightning current discharge in time;
(3) Installation of ventilation equipment cooling, so that the screen body internal temperature between -10 ℃ ~ 40 ℃. Behind the top of the screen to install the axial fan, exhaust heat;
(4) The selection Operating Temperature -40 ℃ ~ 80 ℃ between industrial grade IC chip to prevent winter temperature is too low so that the display can not start. ;
(5) In order to ensure that in the case of strong ambient light, distance visual selection of ultra high power led light-emitting diode;
(6) Media use of a new wide angle tube, wide viewing angle, color pure, consistent coordination, the life of over 100,000 hours. Medium outer package with the most popular cover along the square cylinder the silicone seal metalization assembly; exquisite beauty of its appearance, durable, anti-sunlight, dust-proof, waterproof, anti-high temperature, anti short circuit "Five Anti" features.
(1) The relationship of the the valid horizon and the actual field size;
(2) Pixel size and resolution;
(3) Unit base area is estimated;
(4) Screen mechanical installation and maintenance operations space;
(5) Screen angle distance.
The playback user needs what?
(1) The text: depending on the text size and differentiate needs;
(2) Video: 320 × 240 dot matrix;
(3) Digital standard DVD: ≥ 640 × 480 dot matrix;
(4) A complete computer video: ≥ 800 × 600 dot matrix;
Ambient brightness Screen brightness requirements?
The general brightness requirements are as follows:
(1) Indoor:> 800CD/M2
(2) Semi-indoor:> 2000CD/M2
(3) Outdoor (look northward):> 4000CD/M2
(4) Outdoor (sit facing south):> 8000CD/M2
Red, green and blue in white constitute what brightness requirements?
Red, green, blue and white couplers aspect contribution is not the same. The fundamental reason is due to the retina of the human eye
Film is different for different wavelengths of light feeling caused. After a large number of experimental test following about proportion, for the reference design:
Simple red, green and blue brightness ratio: 3:6:1
Precise red, green and blue brightness ratio: 3.0:5.9:1.1
Why the high-end full-color screen to use pure green tube?
Actual LED display production of high luminous efficiency but also to obtain rich vibrant color rendering three-color LED lamp, so that the area of a triangle of color in the chromaticity diagram as much as possible in and close to the tongue-shaped spectral color curve, to meet the rich color and giving sufficient brightness and tongue-shaped curve leading to 515nm wavelength light wavelength close to 515nm pure green light LED tube end LED display selection, such as selection of 520nm, 525nm or 530nm wavelength light LED lamp .
Clear luminance and dot density conditions, how the brightness of the single-tube computer?
Calculated as follows: (two red, one green, one blue)
The red LED lamp brightness: brightness (CD) / M2 ÷ points /, M ² × 0.3 ÷ 2
Green LED lamp brightness: brightness (CD) / M2 ÷ Points / M2 × 0.6
Blue LED lamp brightness: brightness (CD) / M2 ÷ Points / M2 × 0.1
For example: 2500 points per square meter density 2R1G1B, per square meter brightness requirements for 5000 CD/M2, then:
The red LED light brightness: 5000 ÷ 2500 × 0.3 ÷ 2 = 0.3
Green LED lamp brightness: 5000 ÷ 2500 × 0.6 ÷ 2 = 1.2
Blue LED lamp brightness: 5000 ÷ 2500 × 0.1 = 0.2
The brightness of each pixel point: 0.3 × 2 +1.2 +0.2 = 2.0 CD
Why choose DVI display interface standard?
(1) Display Interface DVI display card interface is in line with the computer with international standards;
(2) Do not need to open the case, and to facilitate the installation;
(3) Memory, dynamic screen display capabilities;
(4) The ability of software and hardware compatible;
(5) Support all operating systems and application software, and flexibility;
(6) Mass production, low cost, easy maintenance.
Display with a laptop can control, and why?
Can not. Laptop graphics card built-in connection to the control system can not be realized, the BOE currently have a laptop with DVI interface, can achieve a notebook control.
Full Color use Nichia tube homemade pipe in addition to price what is the difference?
(1) Die: Nichia independent production die, the domestic pipe usually die in the United States or Taiwan;
(2) Package: Nichia's own package, no domestic production plants, more homemade pipe packaging manufacturers;
(3) Consistency: Nichia tube the same batch die wavelength difference is small, good consistency, consistency of homemade pipe is relatively poor;
(4) Life span: Nichia tube relatively long life, the homemade pipe attenuation is more serious;
Indoor module full color screen with SMD LED Full Color What is the difference?
(1) Light-emitting part: module full color screen display modules are generally more expensive as yellow-green, pure green module prices; SMD full color screen generally use pure green die;
(2) Display: module full color pixel visual feeling coarse, low brightness, easy mosaic phenomenon; SMD full color screen better consistency and higher brightness;
(3) Maintenance: module full color difficult to maintain, the entire module replacement costs; SMD full color easy to maintain, the single lamp repair and replacement;
Outdoor screen can paste table LED, and why?
Can not. The demanding outdoor screen installation structure, SMD LEDs unable to adapt to the harsh environment of the outdoors;
The higher outdoor screen brightness SMD LED outdoor screen brightness requirements can not be achieved.
Outdoor screen long production cycle Why?
(1) Procurement of raw materials: LED Lamp procurement cycle longer, especially imported die, order cycle takes 4-6 weeks;
(2) A complex production process: subject PCB design, casing production, filling plastic, tune white balance;
(3) Strict structural requirements: general cabinet design, wind, rain, lightning, etc. should be considered.
How to help the user to select the appropriate display?
(1) The need to display the content of;
(2) Visual distance perspective confirmation;
(3) Screen resolution requirements;
(4) To install environmental requirements;
(5) The cost of control;
The display's aspect ratio is how much?
The teletext screen: determine the content displayed;
Video screen: 4:3 or close to 4:3; ideal ratio of 16:9.
A control system capable of controlling the number of points?
Communication screen A card: monochrome, color 1024 × 64
Communication screen B card: the monochromatic: 896 × 512 two-color: 896 × 256
DVI color screen: 1280 × 768
DVI full color display: 1024 × 512
The design of the display size generally consider what factors?
In the design screen body size, there are three important factors:
(1) The need to display the content of;
(2) Floor space conditions;
(3) The display unit template size (indoor screen) or pixel size (outdoor screen).
The display should be added more than 10 kilowatts buck boot device.
Communication requirements: communication distance is long communication lines defined.
Model to display the installed communications line length standard used to install a communications line.
Prohibited and power lines of communication lines in the same line pipe alignment.
Installation requirements: screen installed around the level, do not allow backward
Lifting to the installation of the upper and lower adjustment lever
To be installed before the wall-mounted forward off the hook
Floor installation to add positioning support bolts.
Display power consumption indicators and power requirements?
The power consumption of the display is divided into the average power consumption and maximum power consumption. Average power consumption is also known as the work of power, it is usually the actual power consumption. The maximum power consumption is the power consumption during startup or full bright extreme cases, the maximum power consumption is the factor of the AC power supply (diameter, switches, etc.) must be taken into account. The average power consumption is generally 1/3 of the maximum power consumption.
The display is a large-scale precision electronic equipment, AC220V power input or its associated computer AC220V power input terminal must be grounded for safe use and reliable work.
Note: The computer AC220V power input ground terminal is connected to the computer chassis.
Display installation requirements?
Power requirements: power supply wiring point should be the size of the screen body within
220V mains powered Firewire 0 line ground wire;
380V mains powered Firewire 10 line ground wire;
The FireWire and 0 line wire cross-sectional area of the same;
The display should be added more than 10 kilowatts buck boot device.
Communication requirements: communication distance is long communication lines defined.
Model to display the installed communications line length standard used to install a communications line.
Prohibited and power lines of communication lines in the same line pipe alignment.
Installation requirements: screen installed around the level, do not allow backward
Lifting to the installation of the upper and lower adjustment lever
To be installed before the wall-mounted forward off the hook
Floor installation to add positioning support bolts.
The design and installation of outdoor screen what issues should be considered?
Outdoor screen as follows:
(1) Screen installed outdoors, often exposed to the sun and rain, wind and dust cover, poor working conditions. Electronic equipment wet or excessive moisture can cause a short circuit or even a fire caused by the failure or even fire, resulting in the loss;
(2) The display may be affected by the strong electric magnetic attacks caused by lightning;
(3) The ambient temperature changes greatly. Display the work itself must produce a certain amount of heat, if the ambient temperature is too high heat and bad, the integrated circuit may not work properly, or even destroyed, so that the display system does not work;
(4) Wide audience, the line-of-sight requirements far and wide vision requirements; ambient light changes, in particular, may be exposed to direct sunlight.
Outdoor display must be done for the above special requirements:
(1) Screen and Screen with the construction of the junction must be strictly waterproof caulk; the screen body must have good drainage measures, in the event of a smooth water emissions;
(2) On the screen and buildings to install lightning protection devices. Display main body and cover a good grounding resistance is less than 3 ohms, caused by lightning current discharge in time;
(3) Installation of ventilation equipment cooling, so that the screen body internal temperature between -10 ℃ ~ 40 ℃. Behind the top of the screen to install the axial fan, exhaust heat;
(4) The selection Operating Temperature -40 ℃ ~ 80 ℃ between industrial grade IC chip to prevent winter temperature is too low so that the display can not start. ;
(5) In order to ensure that in the case of strong ambient light, distance visual selection of ultra high power led light-emitting diode;
(6) Media use of a new wide angle tube, wide viewing angle, color pure, consistent coordination, the life of over 100,000 hours. Medium outer package with the most popular cover along the square cylinder the silicone seal metalization assembly; exquisite beauty of its appearance, durable, anti-sunlight, dust-proof, waterproof, anti-high temperature, anti short circuit "Five Anti" features.
Posted by novaking at
15:51
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