Camera module having transparent cover plate configured to be target optical lens and target optical lens used as external optical lens and method for manufacturing camera module, and display device having camera module and method for manufacturing display device

• US 10,819,891 B2
• Filed: 05/15/2018
• Issued: 10/27/2020
• Est. Priority Date: 06/12/2017
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: Wang, Yang, Liu, Fei, Liu, Jianqiang, Sun, Kuo, Zheng, Haihong, Chai, Yuanyuan
• Primary Examiner(s): Haliyur, Padma
• Application Number:
  US16/337,485
• Publication Number:
  US 20190349503A1
• Time in Patent Office: 896 Days
• CPC Class Codes: G03B 17/12 with means for supporting objectives, supplementary lenses, filters, masks, or turrets
• CPC Class Codes: G09F 9/00 Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 23/57 Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
• CPC Class Codes: H05K 1/189 characterised by the use of a flexible or folded printed circuit H05K3/326 takes precedence

Abstract

The present disclosure discloses a camera module and a manufacturing method thereof, a display device and a manufacturing method thereof, in the field of display technology. The display panel includes a display substrate and a transparent cover plate on the display substrate. The camera module includes a camera and a transparent cover plate attached to the camera, wherein a part of the transparent cover plate is configured as a target optical lens which is used as an external optical lens of the camera, and the transparent cover plate is configured to protect a display device. With the present disclosure, the thickness of the camera module is reduced. The present disclosure is used for capturing an image.

Claims

1. A camera module, comprising:

a camera and a transparent cover plate attached to the camera, wherein a part of the transparent cover plate is configured as a target optical lens which is used as an external optical lens of the camera, and the transparent cover plate is configured to protect a display device; and

the camera module further comprises;

an optical lens set, which comprises an external optical lens and an internal optical lens, wherein an optical axis of the external optical lens coincides with an optical axis of the internal optical lens; and

a mounting framework and an image sensor that are both fixedly connected to the optical lens set;

wherein a geometric center of an orthographic projection of the mounting framework on the transparent cover plate, a geometric center of an orthographic projection of the image sensor on the transparent cover plate, and a geometric center of an orthographic projection of the internal optical lens on the transparent cover plate coincide with a geometric center of the external optical lens.

2. The module according to claim 1, wherein for the transparent cover plate, a total number of the target optical lens configured by the transparent cover plate is 1.

3. The module according to claim 1, wherein the external optical lens is used as at least one layer of external optical lens in the optical lens set.

4. The module according to claim 1, wherein a total layer number of the optical lenses in the optical lens set is at least 3.

5. The module according to claim 3 wherein the external optical lens is used as an outermost layer of external optical lens in the optical lens set, and a distance between a central point of the external optical lens and any edge of the transparent cover plate is greater than or equal to a distance threshold whose range is from 5 mm to 10 mm.

6. The module according to claim 1, wherein the external optical lens is a concave lens.

7. The module according to claim 1, wherein the mounting framework is a driving motor that drives the optical lens set to move or a holder for securing the optical lens set.

8. The module according to claim 7, wherein the driving motor consists of a MEMS (Micro-Electro-Mechanical System).

9. The module according to claim 7, wherein the driving motor is a voice coil motor.

10. The module according to claim 1, comprising:

a front camera module.

11. The module according to claim 1, wherein the transparent cover plate is made of one of glass, quartz and resin.

12. The module according to claim 1, wherein the transparent cover plate is a glass cover plate, a part of the glass cover plate is configured as a target optical lens which is used as an outermost layer of external optical lens of the camera, an optical lens set in the module comprises:

the outermost layer of external optical lens and at least two layers of internal optical lenses, wherein an optical axis of the outermost layer of external optical lens coincides with an optical axis of the at least two layers of internal optical lenses;

the external optical lens is a concave lens, and a distance between a central point of the external optical lens and any edge of the glass cover plate is greater than or equal to a distance threshold whose range is from 5 mm to 10 mm;

the module further comprises;

a mounting framework and an image sensor that are both fixedly connected to the optical lens set;

wherein a geometric center of an orthographic projection of the mounting framework on the glass cover plate, a geometric center of an orthographic projection of the image sensor on the glass cover plate, and a geometric center of an orthographic projection of each of the internal optical lenses on the glass cover plate coincide with a geometric center of the outermost layer of external optical lens.

13. A display device, comprising a display panel and at least one camera module at a side of the display panel;

wherein the at least one camera module comprises;

a camera and a transparent cover plate at a side, away from the display panel, of the camera, the at least one camera module comprises the same transparent cover plate, the transparent cover plate is configured to protect the display panel, at least one target optical lens is disposed in the transparent cover plate, the at least one target optical lens corresponds to the at least one camera module, and the target optical lens is used as an external optical lens of a corresponding camera; and

the camera module further comprises;

an optical lens set, which comprises an external optical lens and an internal optical lens, wherein an optical axis of the external optical lens coincides with an optical axis of the internal optical lens; and

a mounting framework and an image sensor that are both fixedly connected to the optical lens set;

wherein a geometric center of an orthographic projection of the mounting framework on the transparent cover plate, a geometric center of an orthographic projection of the image sensor on the transparent cover plate, and a geometric center of an orthographic projection of the internal optical lens on the transparent cover plate coincide with a geometric center of the external optical lens.

14. The display device according to claim 13, comprising:

a camera module, wherein a part of the transparent cover plate is configured as the target optical lens, and the target optical lens is used as an external optical lens of the camera in the at least one camera module.

15. The display device according to claim 13, wherein the display panel is one of an organic light-emitting diode display pan&

and a liquid crystal display panel.

16. A manufacturing method of a camera module, comprising:

providing a transparent cover plate configured to protect a display panel in a display device;

processing a part of the transparent cover plate, to enable the processed part of transparent cover plate to be configured as a target optical lens;

providing a camera; and

attaching the transparent cover plate onto the camera, to enable the target optical lens to be used as an external optical lens of the camera; and

wherein the camera module further comprises;

an optical lens set, which comprises an external optical lens and an internal optical lens, wherein an optical axis of the external optical lens coincides with an optical axis of the internal optical lens; and

a mounting framework and an image sensor that are both fixedly connected to the optical lens set;

wherein a geometric center of an orthographic projection of the mounting framework on the transparent cover plate, a geometric center of an orthographic projection of the image sensor on the transparent cover plate, and a geometric center of an orthographic projection of the internal optical lens on the transparent cover plate coincide with a geometric center of the external optical lens.

17. The method according to claim 16, wherein processing a part of the transparent cover plate, to enable the processed part of transparent cover plate to be configured as a target optical lens comprises:

optically processing the transparent cover plate by any one of ELID (Electrolytic In-process Dressing) processing, laser processing, ultrasonic grinding and precision ultrasonic milling, to enable the processed part of transparent cover plate to be configured as the target optical lens.

18. A manufacturing method of a display device, comprising:

manufacturing a camera module with the manufacturing method of the camera module of claim 16;

providing a display panel; and

encapsulating the camera module on the display panel.