138 inch multimedia COB all-in-one machine

The 138-inch COB smart all-in-one machine has stood out in scenarios such as teaching and meetings due to its size and technological advantages.

Product Features

The 138-inch COB smart all-in-one machine has stood out in scenarios such as teaching and meetings due to its size and technological advantages.


In terms of display performance, the super-large screen offers an immersive visual experience. Whether it's high-definition pictures and complex formulas in teaching courseware or detailed data charts in meeting presentations, they can all be presented completely and clearly. With the support of COB technology, the brightness uniformity is excellent. The high contrast makes the picture colors rich and the layers distinct, and the picture can remain clear even in a bright environment. High resolution and refresh rate ensure fine images and smooth dynamic scenes. Coupled with a wide viewing Angle of over 175°, every corner of the meeting room or classroom can enjoy a high-quality visual experience.


The interactive operation is extremely convenient, supporting 20-point touch control. The touch response is fast, the writing is smooth and fluid, and the picture can be easily zoomed in and out and moved through gestures. The smart pen is highly sensitive to pressure when writing, accurately reproducing the handwriting. It also has quick function keys that can be used to activate applications such as whiteboards with just one click. The voice interaction function is powerful. The AI voice assistant supports operations such as voice transcription and real-time translation, achieving efficient human-computer interaction.


In terms of systems and software, Android and Windows dual systems can be freely switched, and it can be flexibly adapted to different application scenarios. It is equipped with a rich variety of teaching and meeting software, supporting functions such as QR code sharing, annotation, and multi-screen interaction. It can also display the content of multiple devices on the same screen through wireless screen projection, breaking the boundaries of devices and improving the efficiency of collaboration. In addition, its appearance design is simple and elegant, the installation method is flexible, and the dust-proof, moisture-proof and shock-proof features endowed by COB technology ensure the stable operation of the equipment, making it suitable for various complex environments.


Product parameters


Screen Size138-inch conference all-in-one machine
Dot Pitch(mm)0.78 0.93 1.25 1.56 1.87 2.5 
PixelReal Pixelcombination of real and imaginary
Lamp Panel Size(mm)150*168.75300*168.75
Resolution192*216320*180240*135192*108160*90120*68
Scanning Method1/541/541/601/271/541/451/40
Surface Hardness4H
Surface ProcessMatte finish
Display unit size(mm)600*337.5*35.5
Screen size(mm)3000*1687.5
Display Unit Weight-4kg
Unit Resolution768*432640*360480*270384*216320*180240*136
Pixel density/m1638400 1137777 640000 409600 284444 161186 
Screen Resolution4608*25923840*21602880*16202304*12961920*10801440*816
Circuit SchemeCommonCommon anode circuitCommon
cathodecathode
circuitcircuit
Flash calibration memorySupport
Control SystemNova
White Balance BrightnessStandard 600nits1200nitsStandard 600nits
Refresh Rate3840Hz
Contrast Ratio10000:1
Colour Temperature9300K
Viewing Angle160°
Input VoltageAC100~240V50/60Hz
Single-box power75W75W70W70W65W56W
Maximum power1875W1875W1750W3000W1625W1400W


Recommended Product