Display substrate with pixel units in a matrix array and display device

• US 10,018,750 B2
• Filed: 04/14/2016
• Issued: 07/10/2018
• Est. Priority Date: 06/10/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Display Technology Co Ltd (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: Zhou, Bo, Zhou, Xiaodong
• Primary Examiner(s): Jahan, Bilkis
• Application Number:
  US15/511,328
• Publication Number:
  US 20170285223A1
• Time in Patent Office: 817 Days
• Field of Search: None
• CPC Class Codes: G02B 3/08 with discontinuous faces, e.g. Fresnel lens diffractive Fresnel lenses G02B5/1876
• CPC Class Codes: H10K 50/858 comprising refractive means, e.g. lenses
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/17 Passive-matrix OLED displays

Abstract

The present disclosure provides a display substrate and a method of manufacturing the same, and a display device. The display substrate comprises a base substrate and a pixel layer disposed on the base substrate, the pixel layer comprising a plurality of pixel units distributed in a matrix array. The display substrate further comprises a Fresnel lens layer including a plurality of Fresnel lenses. The pixel units each are located at a position within a focal plane of at least one of the Fresnel lenses.

Claims

1. A display substrate comprising a base substrate and a pixel layer disposed on the base substrate, the pixel layer comprising a plurality of pixel units distributed in a matrix array;

wherein the display substrate further comprises a Fresnel lens layer including a plurality of Fresnel lenses; and

the pixel units each are located at a position within a focal plane of at least one of the Fresnel lenses;

wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises;

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer;

wherein a vertical cross section of each of the projections comprises two lateral sides of an isosceles triangle and an angular bisector of an apex angle between the two lateral sides of the isoceles triangle is perpendicular to the Fresnel lens layer.

2. The display substrate according to claim 1, wherein each of the pixel units comprises a plurality of sub-pixels, and each of the sub-pixels corresponds to one of the Fresnel lenses and is located at a position within the focal plane of the corresponding Fresnel lens.

3. The display substrate according to claim 1, wherein each of the Fresnel lenses is equivalent to a concave lens or a convex lens.

4. The display substrate according to claim 1, wherein the Fresnel lens layer is disposed on the pixel layer and a packaging substrate is provided on the Fresnel lens layer.

5. The display substrate according to claim 1, wherein a packaging substrate is provided on the pixel layer and the Fresnel lens layer is provided on the packaging substrate.

6. The display substrate according to claim 5, further comprising a protective layer on a side of the Fresnel lens layer apart from the packaging substrate and a material of the protective layer has a refractive index not less than a refractive index of a material of the Fresnel lenses.

7. The display substrate according to claim 4, further comprising sealing glue used for sealing the base substrate and the packaging substrate;

wherein the sealing glue is located around the pixel layer.

8. The display substrate according to claim 1, wherein each of the projections comprises a sawtooth-shaped arc surface, and the elliptical arc surface and the sawtooth-shaped arc surface together form a curved surface of the concave lens or the convex lens.

9. A display device comprising the display substrate according to claim 1.

10. The display substrate according to claim 5, further comprising sealing glue used for sealing the base substrate and the packaging substrate;

wherein the sealing glue is located around the pixel layer.

11. The display substrate according to claim 2, wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises:

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer.

12. The display substrate according to claim 3, wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises:

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer.

13. The display substrate according to claim 4, wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises:

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer.

14. The display substrate according to claim 5, wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises:

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer.

15. The display substrate according to claim 6, wherein the Fresnel lens layer comprises a plurality of Fresnel lenses and each of the Fresnel lenses comprises:

a plurality of concentric circles at one side of the Fresnel lens layer, the plurality of concentric circles comprising an elliptical arc surface at a central position and projections located between two adjacent ones of concentric circles; and

a flat surface located at the other side of the Fresnel lens layer opposite to the side of the Fresnel lens layer.