Three-dimensional positioning rules for chip position

​​Analysis of the internal structure of the module shows that 85% of failures originate from poor chip contact.​ ​, which can be accurately positioned through the following methods:

• ​​box perspective​ ​: After removing the back heat sink, the black package module can be seen 15cm away from the right lock.
• ​​Thermal imaging inspection​ ​: The temperature in the chip area is usually 8-12 higher than the surrounding area under working conditions.℃
• ​​waveform analysis​ ​: Use an oscilloscope to detect the RGB signal line. Normal chip output waveform fluctuation is ≤0.3V.

Special Tips: Use​ ​Intelligent brightness adjustment technology​ ​The outdoor module has a laser-etched CE certification code on the surface of the driver chip, which needs to be inspected with a 20x magnifying glass.

New and old chip performance comparison table

An international sports venue project passed the identification​ ​Aluminum magnesium zinc box code​ ​, accurately matching the new version of the chip with redundant circuits, reducing the screen switching delay to 0.8ms.

Five-step verification process for chip quality

1. ​​Screen printing clarity​ ​: Genuine chip characters have sharp edges and no ghosting (it is recommended to use an electron microscope)
2. ​​Solder joint fullness​ ​: 128-pin equipment must ensure that more than 95% of the solder joints are in a full arc shape
3. ​​Temperature rise curve​ ​: After 4 hours of continuous operation, there is a risk of aging if the temperature difference is >15℃
4. ​​Signal stability​ ​: When playing the 4K@60Hz test film, the number of color faults appears <3 times/hour
5. ​​Protocol compatibility​ ​: Need to support simultaneous analysis of HDR10+ and HLG dual standards

Typical case: Application by a multinational commercial complex​ ​Permeability detection technology​ ​, abnormal chip batches were found in the transparent screen module with 86% light transmittance to avoid the loss of overall equipment rework.

The essence of choosing a chip detection solution is the combination of technical reserves and practical experience. It is recommended to create a​ ​thermodynamic diagram​​、​​Signal Integrity Report​​、​​Protocol compatibility list​ ​A three-dimensional evaluation system will transform module maintenance from passive repair to a new model of active prevention.

for more product information and pricing, please contact us .