Reduce the VA Area of the TP: This can help minimize the area where light leakage can occur. Switch to VCUT Light Guide Plate: A VCUT light guide plate can better control light distribution and reduce edge bright lines. How to troubleshoot when light leakage becomes noticeable around the edges of an LCD display module? For OEM devices where non-standard display shape, active area, FPC direction, interface path, and equipment-level fit need to be reviewed before sample planning. LCD screen light leakage refers to the phenomenon of obvious bright spots or halos appearing at the edges or corners of the screen in full black or dark colors. In some cases. This is a natural characteristic of LCD screens and not an abnormal phenomenon.