Display panel

• US 10,635,881 B2
• Filed: 02/15/2017
• Issued: 04/28/2020
• Est. Priority Date: 08/22/2016
• Status: Active Grant

• Current Assignee: Shanghai OXi Technology Co., Ltd.
• Original Assignee: Shanghai OXi Technology Co., Ltd.
• Inventors: Ling, Yan, Zhu, Hong
• Primary Examiner(s): Shah, Utpal D
• Application Number:
  US15/741,346
• Publication Number:
  US 20190286870A1
• Time in Patent Office: 1,168 Days
• CPC Class Codes: G02B 2207/123 Optical louvre elements, e.g. for directional light blocking
• CPC Class Codes: G02B 27/30 Collimators
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• CPC Class Codes: G06F 18/00 Pattern recognition
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06V 40/1318 using electro-optical elements or layers, e.g. electroluminescent sensing

Abstract

A display panel is provided, including: a display region including a plurality of self-luminous display pixels configured in array, wherein the display region includes at least one optical fingerprint sensing region, wherein at least one optical fingerprint sensing element is configured in each pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels in every optical fingerprint sensing region, where m and n are any integers no less than 1, and k is any integer from 1 to m by n. Functions of the display panel are strengthened, and performance of the functions is improved.

Claims

1. A display panel, comprising:

a display region comprising a plurality of self-luminous display pixels configured in array,

wherein the display region comprises at least one optical fingerprint sensing region,

wherein at least one optical fingerprint sensing element is configured in each pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels in every optical fingerprint sensing region, where m and n are any integers no less than 1, and k is any integer from 1 to m by n,

wherein an area of the optical fingerprint sensing region is smaller than an area of the display region and within a range from 25 mm² to 400 mm².

2. The display panel according to claim 1, wherein one optical fingerprint sensing element is configured in each pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, where at least one of m and n is greater than 1, k is less than m by n, and an area of the self-luminous display pixel is smaller than 30 μ

m by 30 μ

m.

3. The display panel according to claim 2, wherein both m and n are 2, and k is 1.

4. The display panel according to claim 1, wherein one optical fingerprint sensing element is configured in each pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, where m, n and k are 1, and an area of the self-luminous display pixel is within a range from 30 μ

m by 30 μ

m to 70 μ

m by 70 μ

m.

5. The display panel according to claim 1, wherein k is m by n, at least two optical fingerprint sensing elements are configured in at least one pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, and an area of the self-luminous display pixel is larger than 70 μ

m by 70 μ

m.

6. The display panel according to claim 5, wherein four or eight optical fingerprint sensing elements are configured in every pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels.

7. The display panel according to claim 1, wherein each of the plurality of self-luminous display pixels comprises at least three sub-pixels, and the optical fingerprint sensing element is disposed in the sub-pixel.

8. The display panel according to claim 7, wherein one optical fingerprint sensing element is configured in every pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, where at least one of m and n is greater than 1, k is less than m by n, and an area of the sub-pixel is smaller than 10 μ

m by 30 μ

m.

9. The display panel according to claim 8, wherein both m and n are 2, and k is 1.

10. The display panel according to claim 7, wherein one optical fingerprint sensing element is configured in every pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, where m, n and k are 1, and an area of the sub-pixel is within a range from 30 μ

m by 10 μ

m to 23 μ

m by 70 μ

m.

11. The display panel according to claim 1, wherein k is m by n, at least two optical fingerprint sensing elements are configured in at least one pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels, and an area of the sub-pixel is larger than 23 μ

m by 70 μ

m.

12. The display panel according to claim 11, wherein four or eight optical fingerprint sensing elements are configured in every pixel among k self-luminous display pixels in every group of m by n self-luminous display pixels.

13. The display panel according to claim 1, wherein each of the plurality of self-luminous display pixels comprises at least three sub-pixels, and the optical fingerprint sensing element is disposed outside the sub-pixel.

14. The display panel according to claim 1, wherein the display region comprises one optical fingerprint sensing region, and an area of the display region is equal to an area of the optical fingerprint sensing region.

15. The display panel according to claim 13, wherein the display region comprises one optical fingerprint sensing region, and an area of the display region is equal to an area of the optical fingerprint sensing region.

16. The display panel according to claim 1, wherein when the optical fingerprint sensing region acquires a fingerprint signal, at least a portion of the self-luminous display pixels give out light to provide light as a light source.

17. The display panel according to claim 1, further comprising a first substrate and a second substrate facing the first substrate, wherein the first substrate is closer to a press surface of a user finger, and at least one of an upper surface and a lower surface of the first substrate is provided with a touch sensing layer.

18. The display panel according to claim 1, wherein a first substrate and a second substrate facing the first substrate, wherein the first substrate is closer to a press surface of a user finger, and a light collimation layer is disposed between the first substrate and the optical fingerprint sensing element.