Display device with fingerprint recognition sensor and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-11515371-B2
Application number	US-201916767812-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Nov 23, 2018
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

The present disclosure provides a display device, a display apparatus, and a method for manufacturing a display device. The display device comprises a mainboard, a display panel disposed on the mainboard, and a fingerprint recognition sensor. The fingerprint recognition sensor is disposed on the mainboard, and the fingerprint recognition sensor is located between the mainboard and the display panel. A groove is formed on a surface of the display panel facing the mainboard, and an orthographic projection of the groove on the mainboard corresponds to a position of the fingerprint recognition sensor. The groove is configured to form an air gap between the fingerprint recognition sensor and the display panel.

First claim

What is claimed is:

1. A display device, comprising:
a mainboard, a display panel disposed on the mainboard, and a fingerprint recognition sensor, wherein:
the fingerprint recognition sensor is disposed on the mainboard, and the fingerprint recognition sensor is located between the mainboard and the display panel;
a groove is formed on a surface of the display panel facing the mainboard, and an orthographic projection of the groove on the mainboard corresponds to a position of the fingerprint recognition sensor; and
the groove is configured to form an air gap between the fingerprint recognition sensor and the display panel,

wherein an outer periphery of the fingerprint recognition sensor is adhered and fixed to the mainboard by an edge sealant layer.

2. The display device according to claim 1 , wherein a part of the outer periphery of the fingerprint recognition sensor is adhered and fixed to the mainboard by the edge sealant layer.

3. The display device according to claim 1 , wherein a shape of the groove is the same as that of a part of the fingerprint recognition sensor to which the edge sealant layer is adhered.

4. The display device according to claim 3 , wherein a size of the groove is same as that of the part of the fingerprint recognition sensor to which the edge sealant layer is adhered.

5. The display device according to claim 1 , wherein the groove has a depth of 20 μm to 50 μm.

6. The display device according to claim 1 , wherein the groove accommodates at least a part of the fingerprint recognition sensor.

7. A method for manufacturing a display device, comprising:
providing a mainboard, a display panel, and a fingerprint recognition sensor;
fixing the fingerprint recognition sensor on the mainboard;
forming a groove on a surface of the display panel; and
coupling the surface of the display panel to the mainboard,
wherein the groove is formed so that after the surface of the display panel is coupled to the mainboard, an orthographic projection of the groove on the mainboard corresponds to a position of the fingerprint recognition sensor, and the groove forms an air gap between the fingerprint recognition sensor and the display panel,
wherein, in fixing the fingerprint recognition sensor on the mainboard, the fingerprint recognition sensor is adhered and fixed to the mainboard by an edge sealant layer.

8. The method for manufacturing the display device according to claim 7 , wherein, in forming the groove on the surface of the display panel, the groove is formed by cutting the display panel through a laser cutting method.

9. The display device according to claim 7 , wherein:
the fingerprint recognition sensor comprises a first part for receiving fingerprint-reflected light and a second part for electrical connection; and
the first part is adhered and fixed to the mainboard by the edge sealant layer, and the groove accommodates the first part.

10. The display device according to claim 9 , wherein a shape of the first part is the same as that of the groove.

11. The display device according to claim 10 , wherein a size of the first part is the same as that of the groove.

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Guo Wenfeng
• Fu Chao
• Li Fei
• Yang Guangjie

Classifications

• G06V40/13 Primary

  Sensors therefor · CPC title

• G06K7/1095

  the scanner comprising adaptations for scanning a record carrier that is displayed on a display-screen or the like · CPC title

• G06V40/12

  Fingerprints or palmprints · CPC title

• G06V40/1318

  using electro-optical elements or layers, e.g. electroluminescent sensing · CPC title

• G06K19/07

  with integrated circuit chips · CPC title