CN114255673A

CN114255673A - Process-optimized under-screen camera device

Info

Publication number: CN114255673A
Application number: CN202111678382.XA
Authority: CN
Inventors: 林志雄; 杨明桦
Original assignee: Zhejiang Quanshi Tong Technology Co ltd
Current assignee: Zhejiang Quanshi Tong Technology Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-03-29

Abstract

The invention discloses a process-optimized under-screen camera device, and relates to the technical field of camera devices. The present invention includes a display screen, the display screen including: glass substrate, the one end to the other end of glass substrate upside form the pixel array of giving out light, and glass substrate's upside is formed with the printing opacity district, the camera device body, and camera device body and display screen cooperation, the camera device body includes: image sensor, the one end of image sensor upside to the other end be formed with the microlens array, the light shield layer is formed to one side of microlens array, and the light shield layer includes: and (4) an aperture. The micro lens of the device is a plano-convex lens which is used for correcting deviated light rays or focusing parallel light rays, and the plano-convex lens is used as a secondary focusing lens for refocusing a parallel light source, has low spherical aberration, and has better imaging quality by verifying that the plane of the plano-convex lens faces the light source and the curved surface faces an image sensor through experimental development.

Description

Process-optimized under-screen camera device

Technical Field

The invention belongs to the technical field of camera devices, and particularly relates to a process-optimized under-screen camera device.

Background

At present, an under-screen camera device is not made of a TFT-LCD (thin film transistor-liquid crystal display) because the LCD emits light passively and emits light through the TFT by an LED backlight source at the bottom. The TFT itself is not so light-transmissive and the image sensor under the screen has difficulty in recognizing the image. Since AMOLED is an active light emitting screen, theoretically, it can be precisely controlled to each sub-pixel, so the OLED screen is a more ideal light source for emitting light. Therefore, how to reduce the problem of the thickening of the whole body caused by placing the under-screen image pickup device is an application direction of the under-screen image pickup device.

Patent application with publication number CN212647249U discloses a smart device, a microlens array projection apparatus and an array substrate thereof, the smart device includes: the optical system comprises a first micro lens array element and a second micro lens array element which are arranged at intervals along the direction of an optical axis and oppositely, the first micro lens array element comprises a first base body and a first lens layer, the first base body comprises a first surface and a second surface arranged opposite to the first surface, and the image layer is formed on the first surface. The micro-lens array substrate is small in size.

Although the two microlenses are arranged oppositely in the comparison document, the content that the convex surface of one of the microlenses is downward is disclosed, and further judgment can be carried out only by further explaining the technical improvement brought by the downward convex surface of the scheme.

Disclosure of Invention

The invention aims to provide a process-optimized under-screen camera device, which solves the technical problem that the angle adjustment of the existing camera device is limited.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a process-optimized under-screen camera device, comprising a display screen, the display screen comprising: the light-emitting pixel array comprises a glass substrate, a light-emitting pixel array and a light-transmitting area, wherein the light-emitting pixel array is formed from one end to the other end of the upper side of the glass substrate;

the camera device body, and camera device body and display screen cooperation, the camera device body includes: image sensor, the one end of image sensor upside to the other end be formed with the microlens array, the light shield layer is formed to one side of microlens array, and the light shield layer includes: and (4) an aperture.

Optionally, the camera device body further includes: the micro lens and the micro lens are positioned on the shading layer, the aperture micro lens corresponds to the light-transmitting area, the micro lens and the image sensor are provided with intervals, the size of an imaging circle on the image sensor can be determined according to the interval of focal length adjustment, and the aperture is arranged between the micro lens and the image sensor.

The embodiment of the invention has the following beneficial effects:

in one embodiment of the present invention, the micro-lens is a plano-convex lens for correcting the deviated light or focusing the parallel light, and the plano-convex lens is used as a secondary focusing lens for refocusing the parallel light source, and the plano-convex lens has low spherical aberration.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of a conventional structure of the present invention;

FIG. 2 is a schematic diagram of an aperture structure according to an embodiment of the invention;

FIG. 3 is a schematic diagram of an aperture structure according to an embodiment of the invention;

fig. 4 is a schematic diagram of an aperture structure according to an embodiment of the invention.

Wherein the figures include the following reference numerals:

the image sensor comprises a glass substrate 1, an image sensor 2, a micro-lens array 3, a shading layer 4 and a diaphragm 5.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

Referring to fig. 1-4, in the present embodiment, a process-optimized under-screen camera device is provided, which includes: display screen, the display screen includes: the light-emitting display device comprises a glass substrate 1, wherein a light-emitting pixel array is formed from one end to the other end of the upper side of the glass substrate 1, and a light-transmitting area is formed on the upper side of the glass substrate 1;

the camera device body, and camera device body and display screen cooperation, the camera device body includes: image sensor 2, the one end of image sensor 2 upside to the other end be formed with microlens array 3, and microlens array 3's one side forms light shield layer 4, and light shield layer 4 includes: and an aperture 5.

Referring to fig. 1, in a conventional under-screen camera device, a microlens array is attached to an image sensor, a CMOS image sensor is disposed under a screen, and light passes through gaps between sub-pixels of an AMOLED screen and enters the image sensor under the screen.

This device provides camera device under screen of process optimization, and light has interference such as scattering, refraction, diffraction to need to handle, has consequently provided two kinds of structures of microlens array and light shield layer for let light cleaner, image more clear, image sensor receives light and forms the image, and this device can be applicable to and indicate the line to distinguish under the screen or camera device's under the screen application.

The angle difference of incident light and emergent light, the light transmission area is a light transmission area with a small area, and the passing light is small-angle light, so that the plane side of the designed micro lens receives the small-angle light, the small-angle light is expected to be incident, after the micro lens is protruded upwards, the angle is enlarged and projected onto the structure (the front surface) on at least one side of the glass substrate of the image sensor, and the glass substrate has other structures or devices, particularly the glass substrate is the glass substrate in the AMOLED display panel.

The micro lens of the device is a plano-convex lens which is used for correcting deviated light rays or focusing parallel light rays, and the plano-convex lens is used as a secondary focusing lens for refocusing a parallel light source, has very low spherical aberration.

Referring to fig. 2, the camera device body further includes: microlens, diaphragm 5, and microlens, diaphragm 5 and image sensor 2 cooperation, and microlens and diaphragm 5 carry out the counterpoint through the optical axis, and diaphragm 5, microlens all are located

light shield layer

4, and 5 microlenses of diaphragm are corresponding with the printing opacity area, and the convex surface of microlens array is down, and the convex surface is close to image sensor, and the plane of microlens array is upwards, and the plane is close to the display screen.

Referring to fig. 3, the camera device body of the present embodiment further includes: the micro lens, the diaphragm and the image sensor are matched, and the diaphragm is arranged between the micro lens and the image sensor. And the micro lens and the diaphragm are aligned through an optical axis, the diaphragm and the micro lens are both positioned on the shading layer, the diaphragm micro lens corresponds to the light-transmitting area, the convex surface of the micro lens array faces downwards and is close to the image sensor, and the plane of the micro lens array faces upwards and is close to the display screen.

The above embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Claims

1. A process optimized underscreen camera device, comprising:

display screen, the display screen includes: the light-emitting display device comprises a glass substrate (1), wherein a light-emitting pixel array is formed from one end to the other end of the upper side of the glass substrate (1), and a light-transmitting area is formed on the upper side of the glass substrate (1);

the camera device body, and camera device body and display screen cooperation, the camera device body includes: image sensor (2), the one end of image sensor (2) upside to the other end be formed with microlens array (3), and light shield layer (4) are formed to one side of microlens array (3), and light shield layer (4) include: an aperture (5).

2. The process-optimized underscreen camera device of claim 1, wherein the camera device body further comprises: the micro lens and the diaphragm (5) are matched with the image sensor (2), and the micro lens and the diaphragm (5) are aligned through an optical axis.

3. A process optimized underscreen camera device as claimed in claim 2, characterized in that the aperture (5) and the micro-lenses are located on the light-shielding layer (4), and the aperture (5) micro-lenses correspond to the light-transmitting area.

4. A process optimized underscreen camera device as claimed in claim 2, characterized in that the micro-lens has a spacing from the image sensor (2), the size of the image circle on the image sensor (2) being determined in accordance with the focal length adjustment spacing.

5. A process optimized off-screen image capture device as claimed in claim 2, characterized in that the convex surface of the microlens array (3) is downward and is close to the image sensor (2), the plane of the microlens array (3) is upward and is close to the display screen.

6. A process-optimized underscreen camera device as claimed in claim 2, characterized in that the microlens is between the aperture (5) and the image sensor (2).

7. A process-optimized underscreen camera device as claimed in claim 2, characterized in that the aperture (5) is between the microlens and the image sensor (2).