Analysis of defects in overseas manufactured displays

We will introduce the observation of the shape of conductive particles in COG implementation. ICs and liquid crystal panels are implemented using the COG method with ACF (anisotropic conductive film). A resin ball is used as the core, and a metal layer (such as nickel or gold) for conductivity is deposited on its surface. During connection, the particles deform appropriately to electrically connect the IC and the panel. To confirm the degree of particle deformation and connection state, cross-sectional observations were conducted, revealing that the amount of particle deformation was "medium," indicating an appropriate level of deformation. By examining the deformation of conductive particles from both the planar and cross-sectional directions, we can explore the correlation with display defects. Please feel free to contact us for any investigations related to panel issues.

Our company conducts "failure analysis of overseas displays." We can perform detailed analysis from confirming the phenomenon, hypothesizing the failure mechanism, to narrowing down the production processes that caused the issue. We carry out lighting observations, panel disassembly, and optical microscope observations tailored to the failure symptoms. If it is necessary to narrow down the defective areas and conduct detailed analysis, we will propose appropriate methods.