WO2021190481A1

WO2021190481A1 - Display assembly and electronic device

Info

Publication number: WO2021190481A1
Application number: PCT/CN2021/082295
Authority: WO
Inventors: 邓紫强
Original assignee: 维沃移动通信有限公司
Priority date: 2020-03-26
Filing date: 2021-03-23
Publication date: 2021-09-30
Also published as: CN111444842A; CN111444842B

Abstract

Provided in the embodiments of the present invention are a display assembly and an electronic device. The display assembly comprises: a display module; a cover plate arranged on the display module; an emitter arranged on the side of the cover plate close to the display module and on the region of the cover plate not covering the display module; and a receiver arranged at the non-display side of the display module.

Description

Display components and electronic equipment

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 202010224351.6 filed in China on March 26, 2020, the entire content of which is incorporated herein by reference.

Technical field

The present invention relates to the field of display technology, in particular to a display assembly and electronic equipment.

Background technique

At present, mobile phone screens have entered the era of full screens from non-full screens. The existing LCD screens mainly use capacitive fingerprints. The fingerprint is placed on the display side of the display screen. As shown in Figure 1, the light passes through the display module 1 twice, and the display module 1 blocks the light of the fingerprint. There is a lot of light loss, and it is difficult to obtain a clear fingerprint image, which affects the acquisition of the fingerprint. This makes it inconvenient to set a fingerprint on the display side of the display screen when the display is full screen, which results in the display screen not being able to achieve a full screen in the true sense, which reduces the user experience of the mobile phone.

Summary of the invention

In view of this, the present invention provides a display assembly and an electronic device to solve the problem that when the fingerprint is set on the display side of the display screen in the existing full screen, the display module blocks the fingerprint light, resulting in a lot of light loss, and it is difficult to obtain a clear image. Fingerprint images are not easy to use.

To solve the above technical problems, the present invention adopts the following technical solutions:

In the first aspect, a display assembly according to an embodiment of the present invention includes:

Display module

A cover plate, the cover plate is arranged on the display module;

A transmitter, the transmitter is disposed on a side of the cover plate close to the display module, and the transmitter is disposed on an area of the cover plate that does not cover the display module;

The receiver, the receiver is arranged on the non-display side of the display module.

In the second aspect, an electronic device according to an embodiment of the present invention includes the display assembly described in the above embodiment.

The beneficial effects of the above technical solutions of the present invention are as follows:

According to the display assembly of the embodiment of the present invention, the cover plate is arranged on the display module, the emitter is arranged on a side of the cover plate close to the display module, and the emitter is arranged on The cover plate does not cover an area of the display module, and the receiver is arranged on the non-display side of the display module. The light emitted by the transmitter enters the cover from the area of the cover that does not cover the display module, and the light is reflected or totally reflected in the cover for transmission. When an obstacle (such as a finger) stops When the side of the cover plate is far away from the display module, the light in the cover plate is emitted from the side of the cover plate close to the display module, and the receiver is used to receive the light from the cover plate For the light emitted from the side close to the display module, the transmitter emits light from the area of the cover plate that does not cover the display module to the cover plate, which can reduce the light loss caused by the blocking of the display module when the light enters the cover plate, and enhance the reception The intensity of the light received by the device improves the utilization rate of light. The fingerprint can be obtained according to the received light, which can obtain a clear image of the fingerprint, which is convenient for accurate acquisition and identification of the fingerprint, so that the fingerprint can be set on the front of the display screen to achieve a true full screen. , It is easy to use and improve the user experience.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the drawings used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

FIG. 1 is a schematic diagram of the path of fingerprint light in the prior art;

2 is a schematic diagram of a structure of a display assembly according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a path of light in a display assembly according to an embodiment of the present invention;

4 is a schematic diagram of the optical coating in the display assembly of the embodiment of the present invention;

FIG. 5 is a schematic diagram of the working principle of the optical coating in the display assembly of the embodiment of the present invention.

Reference number

Cover 10;

Transmitter 20;

Receiver 30;

Optical coating 40; Triangular prism structure 41;

Display layer 50; Backlight source 51;

In the box 60.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art fall within the protection scope of the present invention.

The following specifically describes the display assembly according to the embodiment of the present invention.

The display assembly according to the embodiment of the present invention includes a display module, a cover plate 10, a transmitter 20, and a receiver 30. Specifically, as shown in FIGS. 2 and 3, the cover plate 10 is provided on the display module, the emitter 20 is provided on the side of the cover plate 10 close to the display module, and the emitter 20 is provided on the cover plate 10. In the area not covering the display module, the receiver 30 is arranged on the non-display side of the display module.

In other words, the display assembly is mainly composed of a display module, a cover plate 10, a transmitter 20, and a receiver 30. The cover plate 10 can be transparent, and the cover plate 10 can be arranged on the display module. The display module can be protected, the transmitter 20 can be an infrared transmitter, the receiver 30 can be an infrared camera, the transmitter 20 is arranged on the side of the cover 10 close to the display module, and the transmitter 20 is arranged on the cover 10 In the area not covering the display module, the light emitted by the transmitter 20 can enter the cover 10 from the area on the cover 10 that does not cover the display module, so as to reduce the light loss caused by the obstruction of the display module when the light enters the cover 10. The intensity of the light received by the receiver 20 is enhanced, and the utilization rate of the light is improved.

The transmitter 20 can emit light to the cover plate 10, for example, infrared rays can be emitted, and the light incident on the cover plate 10 can be totally reflected in the cover plate 10. When an obstacle (such as a finger) stops the cover plate 10 away from the display module The light in the cover plate 10 is emitted from the side of the cover plate 10 close to the display module under the reflection of obstacles. The receiver 30 is arranged on the non-display side of the display module. Receive the light emitted from the side of the cover 10 close to the display module. When the obstacle is a finger, fingerprints can be obtained according to the light received by the receiver 30, because the light enters from the area on the cover 10 that does not cover the display module The cover plate 10 can allow light to pass through the display module less once, reduce the light loss caused by the blockage of the display module when the light enters the cover plate 10, enhance the intensity of the light received by the receiver 20, and obtain a clear image of fingerprints. , To facilitate accurate acquisition and identification of fingerprints.

According to the display assembly of the embodiment of the present invention, light is emitted to the cover plate 10 through the transmitter 20, and the light enters the cover plate 10 from the area on the cover plate 10 that does not cover the display module, reducing the blockage of the display module when the light enters the cover plate. The resulting light loss enhances the intensity of the light received by the receiver and improves the utilization of the light. The light is reflected or totally reflected in the cover 10. When the finger stops on the side of the cover 10 away from the display module, The light in the cover plate 10 is emitted from the side of the cover plate 10 close to the display module, and the light emitted from the side of the cover plate 10 close to the display module is received by the receiver 30, and fingerprints are obtained according to the received light, and the fingerprints can be obtained The clear image is easy to accurately obtain and identify the fingerprint, and it is convenient to set the fingerprint on the display side of the display screen to realize a true full screen, which is easy to use and improves the user experience.

In some embodiments of the present invention, as shown in FIGS. 2 and 3, an optical structure may be provided on the side of the cover plate 10 close to the display module, and the optical structure may be provided between the transmitter 20 and the cover plate 10. The optical structure can be used to gather the light emitted by the emitter 20 and enter the cover 10 from the area on the cover 10 that does not cover the display module. The light emitted by the emitter 20 is collected by the optical structure and then projected to the cover 10. It can be incident on the cover plate 10 obliquely (non-perpendicularly), and the angle of incidence can be adjusted as required, so that the light entering the cover plate 10 is reflected or totally reflected. The light emitted by the emitter is scattered, resulting in a decrease in the utilization rate of the light. The optical structure can converge the scattered light in a desired direction, and then project the light to the cover plate 10 after the collection of the optical structure, and project the light to the cover plate 10 from a specified direction, which can increase the intensity of the light and increase the utilization rate of the light. The angle of the light entering the cover plate 10 can be controlled by the optical coating, and the light control at any angle can be realized.

In other embodiments of the present invention, the optical structure is provided on the cover plate 10 in an area that does not cover the display module, and the transmitter 20 and the optical structure can be spaced apart, so that the transmitter 20 can emit to the optical structure from a desired angle. The light is convenient for the optical structure to gather light, facilitates the setting of the optical structure, and avoids interference between the optical structure and the display module.

In the embodiment of the present invention, as shown in FIGS. 3 and 4, the optical structure is an optical coating 40 having at least one triangular prism structure 41. The triangular prism structure 41 collects the light emitted from the emitter 20 and enters the cover plate 10. Optionally, the optical coating 40 may have a plurality of triangular prism structures 41, and the plurality of triangular prism structures 41 are evenly spaced and distributed. The triangular prism structure 41 can collect the light emitted by the transmitter 10, and the triangular prism structure 41 can collect the collected light from A single direction is projected to the cover plate 10 to reduce the loss of light from other angles and increase the intensity of light. The optical structure 40 may be a transparent polyimide film with at least one triangular prism structure 41, which is easy to install and low in cost.

Optionally, the optical coating 40 may be a transparent layer to avoid the influence of the optical coating 40 on light.

The structure of the optical coating 40 can be as shown in Figures 3 and 4, the thickness of the optical coating 40 can be 10um-50um, and the optical coating 40 can be a transparent polyimide material layer, as shown in Figure 4, a triangular prism The structure 41 can make the incoming light rays of multiple angles undergo multiple reflections and refractions, and finally obtain the light rays with the largest energy at a specified angle. The structural impact of the optical coating 40 is negligible, saves structural space, does not affect the normal display screen, and fingerprint acquisition is relatively independent of the work of the display screen.

In some embodiments of the present invention, the emitter 20 and the cover plate 10 are spaced apart, so that the emitter 20 can emit light to the cover plate 10 from a desired angle. The transmitter 20 can be arranged on the side of the cover plate 10 that is close to the display module and does not cover the area of the display module to prevent the display module from blocking or weakening the light emitted by the transmitter 20. The transmitter 20 can be arranged obliquely toward the cover plate 10. , So that the light emitted by the transmitter 20 is directly projected to the cover plate 10. When the optical coating 40 is set, the transmitter 20 can be arranged obliquely toward the optical coating 40, and the light emitted by the transmitter 20 can be directly projected to the optical coating 40, thereby reducing the loss of light.

In other embodiments of the present invention, the display module includes a display layer 50 and a backlight source 51. The backlight source 51 may be a light emitting diode (LED) light source, and the display layer 50 may be provided on the cover plate 10 and the backlight source. 51, the receiver 30 can be arranged on the side of the backlight source 51 away from the display layer 50, that is, the backlight source 51 is arranged between the receiver 30 and the display layer 50, and the receiver 30 can touch the area according to the fingerprint Location to choose. The frequency of the light emitted by the backlight source 51 and the light emitted by the transmitter 20 are different. For example, the light emitted by the backlight source 51 may be white light, and the light emitted by the transmitter 20 may be infrared rays, which is convenient for accurate reception by the receiver.

According to an embodiment of the present invention, as shown in FIGS. 2 and 3, the display assembly further includes a middle frame 60, the cover plate 10 is arranged on the middle frame 60, the cover plate 10 can be glued to the middle frame 60, the display module, The transmitter 20 and the receiver 30 may be provided between the cover plate 10 and the middle frame 60, respectively.

The display assembly may also include a flexible circuit board and a chip. The flexible circuit board and the chip can be connected to the display module respectively, and the display module can be controlled by the flexible circuit board and the chip.

An embodiment of the present invention also provides an electronic device, and the electronic device includes the display component described in the foregoing embodiment. When the display assembly of the above embodiment is applied to an electronic device, the light is emitted to the cover through the transmitter, and the light is reflected or totally reflected in the cover for transmission. When the finger stops on the side of the cover away from the display module, The light in the cover plate is emitted from the side of the cover plate close to the display module, and the light emitted from the side of the cover plate close to the display module is received by the receiver, and fingerprints are obtained according to the received light, so that the fingerprint can be set on the display screen The front of the camera realizes a true full screen, which is easy to use and improves the user experience.

Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the object being described changes, the relative position relationship changes accordingly.

The above are the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims

A display component including:

Display module

A cover plate, the cover plate is arranged on the display module;

A transmitter, the transmitter is disposed on a side of the cover plate close to the display module, and the transmitter is disposed on an area of the cover plate that does not cover the display module;

The receiver, the receiver is arranged on the non-display side of the display module.
3. The display assembly of claim 1, wherein an optical structure is provided on a side of the cover plate close to the display module, and the optical structure is disposed between the emitter and the cover plate.
3. The display assembly according to claim 2, wherein the optical structure is provided on an area of the cover plate that does not cover the display module, and the emitter and the optical structure are spaced apart.
3. The display assembly according to claim 3, wherein the optical structure is an optical coating having at least one triangular prism structure, and the triangular prism structure collects the light emitted from the emitter and enters the cover plate.
4. The display assembly of claim 4, wherein the optical coating has a plurality of the triangular prism structures, and the plurality of triangular prism structures are evenly spaced and distributed.
The display assembly of claim 4, wherein the optical coating is a transparent layer.
The display assembly of claim 1, wherein the transmitter and the cover plate are spaced apart.
The display assembly according to claim 1, wherein the display module comprises

The display layer and the backlight source, the display layer is arranged between the cover plate and the backlight source, the receiver is arranged on the side of the backlight source away from the display layer, and the backlight source emits The frequency of the light is different from that of the light emitted by the emitter.
The display assembly according to claim 1, further comprising:

The middle frame, the cover plate is arranged on the middle frame, and the display module, the transmitter and the receiver are respectively arranged between the cover plate and the middle frame.
An electronic device comprising the display assembly according to any one of claims 1-9.