Analysis of good quality overseas manufactured LCD 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 status, cross-sectional observations were conducted, revealing that the particle deformation was at a "medium" level, indicating an appropriate degree 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 inquiries regarding panel-related defects.

We would like to introduce the analysis of good quality LCD displays from Aites Co., Ltd. First, we conduct optical microscope observations focusing on the FPC, FOG, COG, and sealing materials in the state of the cell panel as part of the appearance observation. Next, we disassemble the cell panel to check the sealing materials, PI film, and TFT shape. If any defects are found during the quality analysis, we will propose additional analyses such as cross-sectional observation of wiring and foreign matter analysis to investigate the causes. Please feel free to consult us when needed.