Macroblock

Macroblock Inc. attended InfoComm at Las Vegas during June 8th to 10th, 2016. LED displays have been selected for a variety of applications in recent years thanks to the image features of vivid color, larger size and seamless design. Image quality is without a doubt one of the key considerations in choosing LED displays. What are the factors that may affect the display image quality? And what is the good image quality? Macroblock answered these questions at InfoComm 2016. 

In addition to qualifications of the LEDs, power supplies and display mechanism, the ICs, including driver ICs and peripheral ICs, are influential to the image quality of LED displays. A good driver ICs should meet the following four critical requirements:
1. Accurately control the current passing through the LEDs to enhance the image uniformity.
2. Ensure images are with high-quality grayscales and high refresh rate.
3. Ensure LED displays feature High LED utilization and low power consumption.
4. Great to have error detection feature for real-time maintenance.  This is especially ideal for LED traffic signs or Variable Message Signs (VMS).

Macroblock demonstrated large and fine pitch LED display cabinets built in with Macroblock’s generic and high-end driver ICs, which showed four different image qualities:

(Figure 1. The layers of flower petals and the color difference with the image source.)
A. 6.67mm Pixel Pitch + Macroblock High-end ICs (MBI5051B)
With the shutter speed of 1/4000 second, the image did not show the black scan lines and grayscale loss. Layers of front-ground, middle-ground and background could be identified clearly. The demonstration also included the feature of remotely adjust the display brightness without sacrificing grayscales or refresh rate so that LED displays might fit in the ambient light levels without being too bright or too dim.

B. 6.67mm Pixel Pitch + Macroblock Generic ICs (MBI5124)
It could be seen from the demonstration that Macroblock’s generic ICs have eliminated the issues of Ghosting Effect, Color Shift at Low Grayscale and Non-uniformity at Low Grayscale.

(Figure 2. The contour of cat’s eye and the nose, the sharpness and clarity of the hair around the neck.)
C. 2.42mm Pixel Pitch + Macroblock High-end ICs (MBI5153)
With the shutter speed of 1/2000 second, the image did not show the black scan lines and grayscale loss. Details of dark images were extremely clear. The driver ICs also solved the seven major problems of fine pitch LED displays: Ghosting Effect, Color Shift at Low Grayscale, Non-uniformity at Low Grayscale, Dim Line at the First Scan Line, Gradient Dim Line, LED Dead Pixel, and High Contrast Interference.

D. 2.42mm Pixel Pitch + Macroblock Generic ICs (MBI5124)
It could be seen from the demonstration that Macroblock’s generic ICs have eliminated the issues of Ghosting Effect, Color Shift at Low Grayscale and Non-uniformity at Low Grayscale.

Besides, the illustration in the booth also highlighted Macroblock’s key LED driver ICs and the corresponding display image problems solved. On one hand, after viewing the image quality presented by LED displays built in with Macroblock’s ICs, you can compare it with other displays to identify the quality differences. On the other hand, you may adjust your procurement strategies when realizing the effect of different pixel pitches and IC combinations.