OLED Attenuation Detection via Light Brightness Difference Functions

The patent segments the measurement process into multiple distinct functions: constructing difference functions from light brightness data under different luminous constraints, integrating these difference functions over magnetic field intensity ranges, and comparing integration results to detect intrinsic attenuation. This segmentation allows each step to be performed by dedicated circuit modules, achieving precise detection while maintaining systematic organization.

The patent introduces an intermediary approach by using difference functions ƒ1(x) and ƒ2(x) as mediators between the raw light brightness measurements and the final attenuation detection. These difference functions, constructed from measurements under different luminous constraints (with and without microwaves), serve as intermediate representations that isolate the intrinsic attenuation signal from other variations in device performance.

The patent applies preliminary action by constructing the difference functions ƒ1(x) and ƒ2(x) from light brightness measurements taken under different luminous constraints before performing the integration operation. This preliminary construction of difference functions organizes the measurement data in advance, enabling the subsequent integration and comparison steps to proceed efficiently with a clear mathematical framework already in place.

The patent utilizes parameter changes by varying the luminous constraints (specifically, applying different combinations of magnetic fields and microwaves) to obtain different light brightness measurements. By changing these physical parameters and constructing difference functions from the resulting data, the method isolates the intrinsic attenuation signal, achieving accurate detection through systematic parameter variation.