Does the display cabinet support 256 levels of brightness adjustment and white balance customization

Ronglin display cabinet supports 256 levels of brightness adjustment and white balance custom adjustment, so that different batches of displays can be mixed.

Signal processing: RTF series products adopt signal folding technology, and the unit module does not need to be cascaded, which greatly improves the display performance of the product. Using signal folding technology, the unit module does not need to be cascaded, which greatly improves the display performance of the product;

Mask: Adopt patented technology mask, the mask adopts the assembly method of rear snap fastening, which can facilitate the front maintenance of the LED light, the fastening screws can not be seen on the front side of the mask, the integrity of the screen surface is good, and there is no bright spot caused by light leakage due to screws when the screen is lit;

Module: Large module is adopted, with only 4 modules per box, which reduces internal connection and improves product stability. There is no need to open the cabinet, and the display module can be directly removed and assembled from the rear of the cabinet. There is no need to open the cabinet, and the display module can be directly removed and assembled from the rear of the cabinet.

Back cover: Remove the 4 screws and remove the back cover to maintain and replace the power supply and receiving card;

Heat dissipation plate: The aluminum bottom plate is used instead of the traditional plastic bottom shell, which improves the heat dissipation performance of the product while ensuring the flatness.

The display cabinet supports 256 levels of brightness adjustment and white balance custom adjustment.

Then support 256 and high metric adjustment, support has now reached the highest level of 512

How to identify the brightness level of LED display.

The brightness rating refers to the brightness level of an image that the human eye can distinguish from the blackest to the whitest. As mentioned earlier, the gray level of the display is very high, which can reach 256 or even 1024 levels. However, due to the limited sensitivity of the human eye to brightness, these gray levels cannot be fully recognized.

In other words, it is possible that many adjacent levels of grayscale will look the same to the human eye. And eye discrimination is different from person to person. For the display screen, the more levels of human eye recognition the better, because the displayed image is for people to see after all.

The more brightness levels the human eye can resolve, the greater the color space of the display, and the greater the potential to display rich colors. The brightness identification level can be tested with special software, and the general display screen can reach more than 20 levels, which is considered a good grade.

There is generally no such reference;

It can be understood this way.

Physical brightness: the brightness achieved when all LED lights are fully lit;

Screen brightness: the brightness of the display screen when it is connected to the control system and the white balance is played;

Generally, the brightness of the screen will be lower than the physical brightness, mainly for the following reasons:

1. When the control system realizes control, there will be a certain loss of brightness, which is generally about 90% of the maximum brightness (sometimes called brightness efficiency).

2. When matching white balance, in order to achieve white, red, green and blue adjust the brightness according to the ratio of 3:6:1, and there will be some loss of some brightness.

Nanjing Ruidao Electronic Technology Co., Ltd. is a private high-tech enterprise specializing in multi-system integration and related technology research and development, manufacturing, brand marketing, is specialized in touch screen all-in-one machine, queuing system, one of the enterprises of LED display products, the company has always focused on providing reliable, timely, excellent pre-sale, sale, after-sales service, and provide you with professional technical advice and services.

Specifications and main technical indicators.

1) Schematic diagram of the structure.

Structure description: Each pixel encapsulates 1 red, 1 pure green and 1 pure blue, a total of three LED light-emitting tubes.

2) Pixel parameters.

Serial number item parameter 1Pixel pitch.

2.Pixel composition: 1 red, 1 pure green, 1 pure blue.

3.Module size 244 122

3) Die parameters.

Serial No. Item Wavelength Brightness Origin 1Red die 640nm 120—140mcd Taiwan 2Pure green die 515--520nm 400-500mcd Hangzhou 3 Pure blue die 465--470nm 80-100mcd Hangzhou (4) screen body technical parameters.

1 Display area of the screen display size.

2 Screen resolution 288 224

3 Display density 17222 points m2

4 Display brightness greater than 250cd m2

5 Drive mode 1 8 Scanning Constant current drive.

6. Viewing angle: 100-120 degrees (left and right viewing angle), elevation angle 75 degrees, depression angle 75 degrees, 7 visual distance: 6-50 meters.

8 Gray level Red, green, and blue each have 256 gray levels.

9 Display colors 16777216 kinds.

10 Frame change speed 60 (frame) seconds.

11 Control mode Synchronization with computer monitor.

12 Display mode 1024 768 or 800 60013 Screen life > 50,000 hours.

14 screen MTBF 1000 hours.

15 Blind spot rate

16 Working voltage: AC220V 15% 47 64Hz17 Full screen power consumption: 1500W m2

18. The total weight of the screen is less than 25kg m2

19 Control distance less than 200 meters (no relay) (Category 5 wire) (fiber greater than 3000 meters).

20 System operating ambient temperature —20 80

21. The humidity of the working environment of the system is 10%-95%RH

After the LED display is used for a period of time, the screen sometimes becomes very dark, which is what we usually call the LED dark screen phenomenon.

First, if you use a chip with grayscale control, it may be that the pin is soldered.

Second, if you are using a constant current output chip, check whether the resistor that controls the output current is not soldered well, and then measure the resistance value of the resistor to see if it is normal (the probability of the resistance being faulty is not large).

Third, it is also possible that the chip is broken, and you can try to replace the chip.

A small part of the board is dark because the IC pins on the circuit board are soldered.

The whole board is dark, and it is estimated that the terminal of the 5V power cord is loose.

A few boards are dark, take a look at the end of the switching power supply.

There is a problem with the backlight driver element or circuit.

In the case of the unit module, the power cord is loose.