Patent · US Active

Display panel and display device

US10620469B2 · kind B2 · utility

2Cited by

2References

18Claims

0Family size

Assignee

BOE Technology Group Co., Ltd. · CN

Inventors

Jifeng Tan · Beijing, CN
Wei Wang · Beijing, CN
Xue Dong · Beijing, CN

Key dates

Filing date	Jul 17, 2017
Grant date	Apr 14, 2020
Priority date	—
Expiry date	Dec 14, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG09G3/36
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A display panel and a display device are disclosed. The display panel includes a first substrate, a liquid crystal layer, a waveguide layer, a grating layer, a quantum dot color filter layer, a first electrode and a second electrode, wherein the first electrode and the second electrode are configured to adjust a refractive index of the liquid crystal layer by changing voltages applied thereto; wherein a coupling efficiency at which light is coupled out of the waveguide layer is determined according to a difference between the refractive index of the liquid crystal layer and a refractive index of the grating layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.