Method of calculating intensity of light leakage

A method of calculating an intensity of light leakage, applied to a curved display panel comprising a glass layer, a horizontal polarizer and a vertical polarizer, and executed when a program is processed by a computer, the method including following steps:

• measuring various parameter values of the display panel;
• determining a global XY coordinate system and establishing a finite element model on the global XY coordinate system according to the measured parameter values, wherein the finite element model is corresponding to the glass layer;
• dividing the finite element model into m sub-layers, wherein the m is in a range from 500 to 1000, applying a bending deformation force to the finite element model, and extracting a stress component value generated on a surface of one of the sub-layers corresponding to a side of the finite element model when the finite element model is deformed due to being completely attached to a curved rigid middle frame, wherein when the bending deformation force is applied to the finite element model, a magnitude of the bending deformation force is a standard atmospheric pressure, and the bending deformation force is applied to an upper surface and a lower surface of the finite element model;
• calculating a principal stress value and a direction angle of a principal stress corresponding to the one of the sub-layers according to the stress component value on the surface of the one of the sub-layers, wherein the direction angle of the principal stress reflects a direction of a deformation of the glass layer;
• calculating a phase difference generated by an incident light on each of the sub-layers due to photoelastic effect according to the principal stress value of the one of the sub-layers, wherein the phase difference is positively correlated with a curvature of the glass layer, and obtaining a complex amplitude matrix of a transmitted light corresponding to the incident light according to the phase difference;
• and
• repeating above steps, and respectively measuring the complex amplitude matrix of the transmitted light when the incident light passes through each of the sub-layers, and obtaining the intensity of light leakage of the curved display device according to the complex amplitude matrix.