See-through display device and manufacturing method thereof

US11953680B2 · kind B2 · utility

Assignee

• BOE Technology Group Co., Ltd. · CN

Inventors

• Liwen Dong · Beijing, CN
• Feng Zhang · 南丰镇, CN
• Wenqu Liu · Beijing, CN
• Zhijun Lv · Beijing, CN
• Zhao Cui · Beijing, CN
• Detian MENG · Beijing, CN
• Libo Wang · Beijing, CN
• Xiaoxin Song · Beijing, CN

Key dates

• Filing date: Dec 29, 2020
• Grant date: Apr 9, 2024
• Expiry date: Feb 17, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0118
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

This disclosure relates to a see-through display device, including: a collimated light source assembly, configured to form collimated light and control a light emitting direction; a first light extraction layer, configured to extract, in a collimated manner, the light ray transmitted inside the light guide plate through a light extraction outlet; an extinction layer and a second light extraction layer, wherein the extinction layer includes a light guide region and a light absorption region which are arranged alternately, and the second light extraction layer includes multiple light extraction inlets; a reflecting layer, arranged on a side, close to the light guide plate, of the second light extraction layer and configured to reflect the collimated light extracted from the light extraction outlet to the light guide plate; and a liquid crystal dimming layer. This disclosure further relates to a manufacturing method of the see-through display device.