US 12,007,664 B2
Transparent display panel, display device, and glasses
Yujiao Guo, Beijing (CN); Wei Wang, Beijing (CN); Xianqin Meng, Beijing (CN); Qiuyu Ling, Beijing (CN); Meng Yan, Beijing (CN); Yishan Tian, Beijing (CN); Gaolei Xue, Beijing (CN); Weiting Peng, Beijing (CN); and Xiaochuan Chen, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/435,011
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Dec. 30, 2020, PCT No. PCT/CN2020/141614
§ 371(c)(1), (2) Date Aug. 30, 2021,
PCT Pub. No. WO2021/196790, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 202010244735.4 (CN), filed on Mar. 31, 2020.
Prior Publication US 2022/0317542 A1, Oct. 6, 2022
Int. Cl. G02F 1/29 (2006.01); G02B 27/01 (2006.01)
CPC G02F 1/294 (2021.01) [G02B 27/0172 (2013.01); G02B 2027/0178 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A transparent display panel having a plurality of sub-pixel regions, the plurality of sub-pixel regions being divided into at least two display unit groups; the transparent display panel comprising:
a first substrate and a second substrate assembled with each other; and
a light exit control layer disposed between the first substrate and the second substrate, the light exit control layer being configured to control a state of exit light of each sub-pixel region; wherein
the first substrate includes:
a first base; and
a dimming component disposed on a side of the first base, the dimming component including a plurality of dimming lenses, each dimming lens being configured to transmit exit light of one sub-pixel region to human eyes and focus the exit light on a corresponding focal plane, and
the plurality of dimming lenses being configured to focus exit light of the at least two display unit groups on different focal planes, wherein the focal planes are located at a side of the transparent display panel away from the human eyes; wherein
the dimming lens includes a metasurface lens; the metasurface lens includes: a transparent base material; and a plurality of microstructures disposed on a surface of the transparent base material proximate to the first base, or disposed on a surface of the transparent base material away from the first base;
the plurality of microstructures are arranged into a plurality of loop-shaped structures, central axes of the plurality of loop-shaped structures substantially coincide, and the plurality of loop-shaped structures are sequentially sleeved in a direction from a center of the transparent base material to an edge of the transparent base material;
an orthogonal projection of each of the plurality of loop-shaped structures on the transparent base material is substantially in a shape of a rectangle;
the metasurface lens is a transmission phase metasurface lens;
the plurality of microstructures in the transmission phase metasurface lens include a plurality of cylindrical holes, and axes of the plurality of cylindrical holes are substantially perpendicular to the transparent base material;
dimensions of the plurality of cylindrical holes in respective axis directions are approximately equal, and a diameter of each of the plurality of cylindrical holes is proportional to a phase change amount of light passing through the transmission phase metasurface lens; and
each of the plurality of loop-shaped structures includes multiple cylindrical holes, and diameters of the multiple cylindrical holes are equal.
 
11. A transparent display panel having a plurality of sub-pixel regions, the plurality of sub-pixel regions being divided into at least two display unit groups; the transparent display panel comprising:
a first substrate and a second substrate assembled with each other; and
a light exit control layer disposed between the first substrate and the second substrate, the light exit control layer being configured to control a state of exit light of each sub-pixel region; wherein
the first substrate includes:
a first base; and
a dimming component disposed on a side of the first base, the dimming component including a plurality of dimming lenses, each dimming lens being configured to transmit exit light of one sub-pixel region to human eyes and focus the exit light on a corresponding focal plane, and
the plurality of dimming lenses being configured to focus exit light of the at least two display unit groups on different focal planes, wherein the focal planes are located at a side of the transparent display panel away from the human eyes; wherein
the dimming lens includes a metasurface lens; the metasurface lens includes: a transparent base material; and a plurality of microstructures disposed on a surface of the transparent base material proximate to the first base, or disposed on a surface of the transparent base material away from the first base;
the plurality of microstructures are arranged into a plurality of loop-shaped structures, central axes of the plurality of loop-shaped structures substantially coincide, and the plurality of loop-shaped structures are sequentially sleeved in a direction from a center of the transparent base material to an edge of the transparent base material;
an orthogonal projection of each of the plurality of loop-shaped structures on the transparent base material is substantially in a shape of a rectangle;
the metasurface lens is a transmission phase metasurface lens;
the plurality of microstructures in the transmission phase metasurface lens include a plurality of cylinders, and axes of the plurality of cylinders are substantially perpendicular to the transparent base material;
dimensions of the plurality of cylinders in respective axis directions are approximately equal, and a diameter of each of the plurality of cylinders is proportional to a phase change amount of light passing through the transmission phase metasurface lens; and
each of the plurality of loop-shaped structures includes multiple cylinders, and diameters of the multiple cylinders are equal.
 
14. A transparent display panel having a plurality of sub-pixel regions, the plurality of sub-pixel regions being divided into at least two display unit groups; the transparent display panel comprising:
a first substrate and a second substrate assembled with each other; and
a light exit control layer disposed between the first substrate and the second substrate, the light exit control layer being configured to control a state of exit light of each sub-pixel region; wherein
the first substrate includes:
a first base; and
a dimming component disposed on a side of the first base, the dimming component including a plurality of dimming lenses, each dimming lens being configured to transmit exit light of one sub-pixel region to human eyes and focus the exit light on a corresponding focal plane, and
the plurality of dimming lenses being configured to focus exit light of the at least two display unit groups on different focal planes, wherein the focal planes are located at a side of the transparent display panel away from the human eyes; wherein
the dimming lens includes a metasurface lens; the metasurface lens includes: a transparent base material; and a plurality of microstructures disposed on a surface of the transparent base material proximate to the first base, or disposed on a surface of the transparent base material away from the first base;
the plurality of microstructures are arranged into a plurality of loop-shaped structures, central axes of the plurality of loop-shaped structures substantially coincide, and the plurality of loop-shaped structures are sequentially sleeved in a direction from a center of the transparent base material to an edge of the transparent base material;
an orthogonal projection of each of the plurality of loop-shaped structures on the transparent base material is substantially in a shape of a rectangle;
the metasurface lens is a geometric phase metasurface lens;
the plurality of microstructures in the geometric phase metasurface lens include a plurality of rectangular prisms, and axes of the plurality of rectangular prisms are substantially perpendicular to the transparent base material;
sizes of the plurality of rectangular prisms are approximately equal, and a rotation angle of each of the plurality of rectangular prisms is proportional to a phase change amount of light passing through the geometric phase metasurface lens; and
each of the plurality of loop-shaped structures includes multiple rectangular prisms, and rotation angles of the multiple rectangular prisms are equal.