BS IEC 62679‑3‑3 is an international standard that discusses electronic paper displays.
BS IEC 62679‑3‑3 is the third part of the electronic paper displays series that specifies the standard measurement conditions and measurement methods for determining the optical performance of electronic paper display (EPD) devices that have an operating integrated lighting unit (such as a front light). The scope of BS IEC 62679‑3‑3 is restricted to EPDs using segmented or matrix structures with either monochromatic or colour type displays.
BS IEC 62679‑3‑3 on optical measuring methods for displays with integrated lighting units is useful for:
An electronic paper display or electronic ink display is a technology that is designed to mimic the appearance of ordinary ink on paper.
The measurement methods are intended for EPDs operated in a reflective mode with the integrated lighting unit (ILU) turned on in a dark or indoor ambient lighting environment.
BS IEC 62679‑3‑3 considers two cases: when the ILU is the only light source, and when it supplements indoor ambient illumination. For these cases, an EPD with an operating ILU can be treated as an emissive display, and any ambient lighting is a separate additive reflected signal.
The purpose of the test methods described in BS IEC 62679‑3‑3 is to determine the reflectance factor of an EPD with an ILU under defined illumination conditions.
IEC 62679-3-3:2016