Transparent display panels, display screens, and mask plates

Patent metadata

Field	Value
Publication number	US-11895859-B2
Application number	US-202117242233-A
Country	US
Kind code	B2
Filing date	Apr 27, 2021
Priority date	Mar 29, 2019
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A transparent display panel, including a substrate, a first electrode layer disposed on the substrate, a light-emitting structure layer disposed on the first electrode layer, and a second electrode layer disposed on the light-emitting structure layer; the first electrode layer includes a plurality of first electrode groups arranged along a first direction; each of the first electrode groups includes at least one first electrode extending along a second direction, the second direction intersects with the first direction; each of the at least one first electrode includes at least two first electrode blocks and at least one connecting part, and two adjacent first electrode blocks are electrically connected with each other by a corresponding connecting part.

First claim

What is claimed is:

1. A transparent display panel, comprising:
a substrate;
a first electrode layer, disposed on the substrate, comprising a plurality of first electrode groups arranged along a first direction, each of the first electrode groups comprising at least one first electrode extending along a second direction intersecting the first direction, each of the at least one first electrode comprising at least two first electrode blocks and at least one connecting portion, two adjacent first electrode blocks being electrically connected with each other by a corresponding connecting portion;
a light emitting structure layer, disposed on the first electrode layer; and
a second electrode layer, disposed on the light emitting structure layer.

2. The transparent display panel according to claim 1 , wherein the at least two first electrode blocks and the at least one connecting portion of each of the first electrode groups are provided on a same layer; and
wherein a size of the connecting portion, in a direction perpendicular to an extending direction of the connecting portion, is greater than 3 μm and smaller than a half of a maximum size of the first electrode block.

3. The transparent display panel according to claim 2 , wherein a projection of the first electrode block on the substrate comprises a first pattern unit, or a plurality of first pattern units connected with each other,
and the first pattern unit comprises circular, elliptical, dumbbell-shape, gourd-shaped, or rectangular.

4. The transparent display panel according to claim 3 , wherein the light emitting structure layer comprises a light emitting structure block correspondingly disposed on each of the at least two first electrode block, a projection of the light emitting structure block on the substrate comprises a second pattern unit or a plurality of second pattern units connected with each other, the second pattern unit is identical to or different from the first pattern unit,
the first electrode layer is an anode layer, the second electrode layer is a cathode layer, the second electrode layer is a surface electrode, materials of the first electrode layer and/or the second electrode layer are transparent materials; and
a light transmittance of the transparent material is greater than or equal to 70%.

5. The transparent display panel according to claim 1 , having a plurality of euphotic paths, wherein:
each path passes through different film layers; and
external incident light enters into the transparent display panel in a direction perpendicular to a surface of the substrate, and when a thickness of each of the film layers is set to be a preset thickness, and/or when a refractive index of each of the film layers is set to be a preset refractive index, the external incident light passes through the transparent display panel along two of the multiple paths to obtain a difference between optical path lengths of the two paths, and the difference between the two paths is an integer multiple of a wavelength of the external incident light.

6. The transparent display panel according to claim 5 , wherein the difference between the optical path lengths of the two paths is zero.

7. The transparent display panel according to claim 5 , further comprising a first pixel defining layer disposed between the first electrode layer and the second electrode layer, and an encapsulating layer disposed on the second electrode layer,
the first pixel defining layer is provided with a plurality of first pixel openings,
the light emitting structure layer comprises a plurality of light emitting structure blocks, and
the plurality of light emitting structure blocks are disposed in the plurality of first pixel openings and in a one-to-one correspondence with the plurality of first pixel openings.

8. The transparent display panel according to claim 7 , wherein the at least two first electrode blocks and the at least one connecting portion of each of the first electrode groups are provided on a same layer, the plurality of paths comprise a first path, a second path, and a third path,
the first path passes through the encapsulating layer, the second electrode layer, the light emitting structure layer, the first electrode layer, and the substrate,
the second path passes through the encapsulating layer, the second electrode layer, the first pixel defining layer, the connecting portion, and the substrate, and
the third path passes through the encapsulating layer, the second electrode layer, the first pixel defining layer, and the substrate.

9. The transparent display panel according to claim 8 , wherein the transparent display panel is a flexible screen encapsulated by a film,
the encapsulating layer comprises a film encapsulating layer, the film encapsulating layer comprises an organic material encapsulating layer, and
a thickness of the organic material encapsulating layer passed through by the first path is greater than a thickness of the organic material encapsulating layer passed through by the second paths or the third paths.

10. The transparent display panel according to claim 8 , wherein the transparent display panel is a hard screen encapsulated by glass frit,
the encapsulating layer comprises a vacuum gap layer and a glass cover plate,
a thickness of the vacuum gap layer passed through by the first path is greater than a thickness of the vacuum gap layer passed through by the second path or the third path.

11. The transparent display panel according to claim 1 , wherein:
the first direction is perpendicular to the second direction, the first direction is a row direction or a column direction,
in the second direction, in the at least two first electrode blocks of the same first electrode group, two projections of two adjacent first electrode blocks on a plane perpendicular to the second direction are offset;
the first electrode comprises at least three first electrode blocks; and
in the first electrode blocks of the same first electrode, two projections of two first electrode blocks located at two sides of any one of the at least three first electrode blocks on a plane perpendicular to the second direction are overlapped completely.

12. The transparent display panel according to claim 1 , wherein the first electrode group comprises two first electrodes,
the first electrode has an active matrix (AM) driving mode, and each first electrode corresponds to one pixel circuit.

13. The transparent display panel according to claim 1 , wherein the first electrode group comprises one first electrode and corresponds to one pixel circuit, or
the first electrode corresponds to two pixel circuits, and the two pixel circuits are electrically connected to two ends of the first electrode.

14. The transparent display panel according to claim 1 , further comprising a first pixel defining layer disposed between the first electrode layer and the second electrode layer and a third electrode layer, wherein:
the first pixel defining layer is provided with a plurality of first pixel openings, the light emitting structure layer comprises a plurality of light emitting structure blocks, the plurality of light emitting structure blocks are disposed in the plurality of first pixel openings in a one-to-one correspondence,
the third electrode layer is disposed at least on a side wall of the first pixel opening and in direct contact with the second electrode layer, and
the third electrode layer is disposed on an upper surface or a lower surface of the second electrode layer.

15. The transparent display panel according to claim 14 , wherein the third electrode layer extends

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Lou Junhui
• Zhang Lu
• Tong Xiaoyang
• Chang Miao

Classifications

• H10K59/80515

  characterised by their shape · CPC title

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K50/813 Primary

  characterised by their shape · CPC title

• H10K59/121 Primary

  characterised by the geometry or disposition of pixel elements · CPC title

• H10K50/844

  Encapsulations · CPC title