WO2021121347A1

WO2021121347A1 - Screen assembly and electronic device

Info

Publication number: WO2021121347A1
Application number: PCT/CN2020/137418
Authority: WO
Inventors: 张涛; 易永念
Original assignee: 维沃移动通信有限公司
Priority date: 2019-12-20
Filing date: 2020-12-18
Publication date: 2021-06-24
Also published as: CN111090184A

Abstract

A screen assembly and an electronic device, wherein the screen assembly comprises: a display panel (110); a protective cover (120), which is located on the light exit side of the display panel (110), wherein the side of the protective cover (120) close to the display panel (110) is provided with an accommodating part (121), and the accommodating part (121) is located in a region where the protective cover (120) does not cover the display panel (110); a light source module (140), which is accommodated in the accommodating part (121); a supporting structure (130), which is located on the side of the display panel (110) away from the protective cover (120), wherein a bottom plate (131) of the supporting structure (130) is provided with a through hole (132); and an image acquisition module (150), which is provided on the side of the bottom plate (131) away from the display panel (110) and is arranged opposite to the through hole (132).

Description

Screen components and electronic equipment

Cross-references to related applications

This application claims the priority of Chinese Patent Application No. 201911328418.4 filed in China on December 20, 2019, the entire content of which is incorporated herein by reference.

Technical field

This application relates to the field of electronic technology, and in particular to a screen assembly and electronic equipment.

Background technique

With the development of electronic technology, under-screen recognition (such as under-screen fingerprint recognition) technology for electronic devices has emerged. Currently, electronic devices equipped with under-screen recognition technology usually use Organic Light-Emitting Diode (OLED) screens, which use the self-luminous characteristics of OLEDs to realize under-screen photosensitive recognition. However, with the continuous development of technology and the increasing pressure of the cost of electronic equipment, electronic equipment using liquid crystal display (LCD) screens has an increasing demand for under-screen recognition.

In related technologies, for electronic devices equipped with LCD screens, infrared lamps and image acquisition modules are usually set below the LCD screen. When the target object is close to the LCD screen (such as the user’s finger touching the LCD screen), the infrared lamp emits infrared light to the LCD screen. Light, the infrared light emitted by the infrared lamp penetrates the screen and is reflected by the target object to form the emitted light, which penetrates the LCD screen again, and is finally received by the image acquisition module for photosensitive recognition.

However, because the liquid crystal layer and the backlight layer in the LCD screen have a weak ability to penetrate visible light, the infrared lamp and the image acquisition module are both installed at the bottom of the screen, causing the light emitted by the light source module to penetrate the screen and return to the image acquisition module. Serious losses occur during the grouping process, and because the backlight layer is composed of multiple layers of film materials, the infrared light will be diffracted and scattered during the process of penetrating the backlight layer, which affects the recognition result of the image acquisition module.

Summary of the invention

The embodiment of the present application provides a screen assembly and an electronic device.

In the first aspect, a screen assembly is provided, including:

Display panel

The protective cover is located on the light emitting side of the display panel, the protective cover is provided with a receiving portion on a side close to the display panel, and the receiving portion is located in an area where the protective cover does not cover the display panel;

The light source module is accommodated in the accommodating part;

A supporting structure located on the side of the display panel away from the protective cover, and the bottom plate of the supporting structure is provided with a through hole;

The image acquisition module is arranged on the side of the bottom plate away from the display panel and is arranged opposite to the through hole.

In a second aspect, an electronic device is provided, including the screen assembly described in the first aspect.

The foregoing at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects:

By arranging the accommodating part in the area where the protective cover is close to the display panel and not covering the display panel, and placing the light source module in the accommodating part, the infrared light emitted by the light source module can be concentrated on the protective cover to reduce Scattering loss, and infrared light only needs to penetrate the protective cover plate during the emission process; by providing a through hole on the bottom plate of the supporting structure and setting the image acquisition module on the side of the bottom plate away from the display panel and opposite to the through hole The position can make the reflected light formed by the reflection of the target object need not penetrate the bottom plate. As a result, the infrared light only penetrates the protective cover and the display panel once during the process from emission to the reflection of the target object and then back to the image acquisition module, thereby reducing the path loss of the infrared light and improving the recognition of the image acquisition module. The accuracy of the result.

Description of the drawings

The drawings described here are used to provide a further understanding of the application and constitute a part of the application. The exemplary embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation of the application. In the attached picture:

Figure 1 is a schematic diagram of an existing under-screen recognition scheme;

FIG. 2 is a schematic structural diagram of a screen assembly provided by an embodiment of the application;

3 is a schematic structural diagram of a protective cover provided by an embodiment of the application;

4 is a schematic structural diagram of another screen assembly provided by an embodiment of the application;

FIG. 5 is a schematic structural diagram of another protective cover provided by an embodiment of the application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely in conjunction with specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

With the continuous development of technology and increasing pressure on the cost of electronic devices, electronic devices using LCD screens have an increasing demand for off-screen recognition (such as off-screen fingerprint recognition). In related technologies, for electronic devices equipped with LCD screens, as shown in Figure 1, infrared lights and image acquisition modules are usually set under the LCD screen. When the target object is close to the LCD screen (such as the user’s finger touching the LCD screen), the infrared The lamp emits infrared light to the LCD screen. The infrared light emitted by the infrared lamp penetrates the multilayer film and protective cover of the LCD screen one by one, and is reflected by the target object to form the emitted light, which penetrates the protective cover and multilayer of the LCD screen again The film material is finally returned to the image acquisition module, and the image acquisition module performs photosensitive identification according to the received reflected light. However, some of the film materials of the LCD screen (such as the liquid crystal layer and the backlight layer) have weak light transmission ability, and the infrared light will be diffracted and scattered during the process of penetrating the multilayer film material, which will cause the infrared light to be in the process of being diffracted and scattered. Generate path loss, which affects the recognition result of the image acquisition module.

In view of this, the embodiments of the present application provide a screen assembly and an electronic device to solve the above-mentioned problems in related technologies.

The technical solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

2 to 5, embodiments of the present application provide a screen assembly, the screen assembly can be applied to electronic equipment, the screen assembly may include: a display panel 110, a protective cover 120, a supporting structure 130, The light source module 140 and the image acquisition module 150.

Wherein, the display panel 110 may be a liquid crystal display panel, which may include a circuit layer 111 and a backlight layer 112, and the circuit layer 111 is provided on the light emitting side of the backlight layer 112. Of course, the liquid crystal display panel also includes a polarizing plate, a liquid crystal layer, a substrate, etc., which are not shown in the figure. In addition, the display panel 110 may also be other types of display panels, which are not limited in the embodiment of the present application.

The protective cover 120 is located on the light emitting side of the display panel 110, and the protective cover 120 is provided with a receiving portion 121 on the side close to the display panel 110, and the receiving portion 121 is located in an area where the protective cover 120 does not cover the display panel 110. For example, the material of the protective cover 120 may be glass, or may be a PVC material with strong light-transmitting ability, which is not limited in the embodiment of the present application.

The light source module 140 is accommodated in the accommodating part 121, and the light source module 140 is used to emit infrared light to the protective cover 120. For example, the light source module 140 may include at least one infrared lamp and a base for installing the at least one infrared lamp. The at least one infrared lamp is accommodated in the accommodating part 121 of the protective cover 120.

The supporting structure 130 is located on the side of the display panel 110 away from the protective cover 120 and used to support the display panel 110, and the bottom plate 131 of the supporting structure 130 is provided with a through hole 132.

The image acquisition module 150 is disposed on a side of the bottom plate 131 away from the display panel 110 and opposite to the through hole 132 to receive the reflected light formed by the infrared light emitted by the light source module 140 through the through hole 132. Exemplarily, the image acquisition module 150 may be at least one of a fingerprint recognition module, an infrared camera, and other modules with infrared photosensitive recognition functions.

In specific implementation, the light source module 140 emits infrared light to the protective cover 120, and the infrared light emitted by the light source module 140 is totally reflected in the protective cover 120, and passes through the target on the side of the protective cover 120 away from the display panel 110. The reflected light from an object (such as a user's finger, the target object is shown as the user's finger in FIGS. 2 and 4) is reflected through the protective cover 120 and the display panel 110 in turn, and finally passes through the bottom plate 131 of the supporting structure 130. The hole 132 returns to the image acquisition module 150. The image acquisition module 150 performs photosensitive detection and identification of the target object based on the received reflected light. In this way, the purpose of under-screen recognition of the image acquisition module 150 can be achieved.

In the screen assembly provided by the embodiments of the present application, the accommodating portion 121 is provided in the area where the protective cover 120 is close to the display panel 110 and does not cover the display panel 110, and the light source module 140 is placed in the accommodating portion 121, so that the light source The infrared light emitted by the module 140 is concentrated on the protective cover 120 to reduce scattering loss, and the infrared light only needs to penetrate the protective cover 120 during the emission process; the bottom plate 131 of the supporting structure 130 is provided with through holes and The image acquisition module 150 is arranged on the bottom plate 131 at a position far from the display panel 110 and opposite to the through hole, so that the reflected light formed by the target object does not need to penetrate the bottom plate 131. As a result, the infrared light only needs to penetrate the protective cover 120 and the display panel 110 once when the infrared light is reflected from the target object and then returned to the image acquisition module 150, thereby reducing the path loss of the infrared light and the penetration of the infrared light. The scattering loss and diffraction loss generated when the panel 110 is displayed can improve the accuracy of the under-screen photosensitive recognition result of the image acquisition module 150.

As shown in FIGS. 2 and 3, in an optional implementation manner, the protective cover 120 in the screen assembly described in the embodiment of the present application may have a double-layer laminated structure. Wherein, the first layer 122 of the protective cover is located on the light emitting side of the display panel 110 and the first layer 122 is close to the side of the display panel 110 and does not cover the area of the display panel 110 is provided with a receiving portion 121; the second layer 123 of the protective cover It is located on the side of the first layer 122 away from the display panel 110.

For example, the shape of the receiving portion 121 may be a hole type, such as a through hole or a blind hole. In addition, the aperture size of the opening may be set based on the volume of the infrared lamp in the light source module 140 to be able to accommodate the infrared lamp. As a result, the receiving portion 121 is formed by opening the hole, and the processing technology is simple and the cost is low.

It can be understood that, in this embodiment, by adopting the protective cover 120 with a double-sided laminated structure and disposing the receiving portion 121 on a layer of the protective cover close to the display panel 110, the protection effect of the display panel 110 can be enhanced.

Further, for this embodiment, as shown in FIG. 3, in another embodiment of the present application, in order to enhance the light transmission ability of the protective cover 120, to further reduce the energy of the infrared light penetrating the protective cover 120 Loss, the second layer 123 of the protective cover 120 is close to the side of the first layer 122 and opposite to the containing portion 121 is coated with an infrared ink coating 124.

Further, for this embodiment, as shown in FIG. 2, in another embodiment of the present application, in order to enhance the display effect of the display panel 110, the second layer 123 of the protective cover 120 is close to the side of the first layer 122 and The area where the infrared ink coating 124 is not coated is coated with a color ink coating 125.

Further, for this embodiment, as shown in FIG. 3, in another embodiment of the present application, the first layer 122 and the second layer 123 of the protective cover 120 are adhered by the optical glue 126, thereby avoiding the protection of the first layer 122 and the second layer 123. The relative movement of the layer 122 and the second layer 123 enhances the stability of the relative position between the first layer 122 and the second layer 123.

As shown in FIG. 4 and FIG. 5, in another alternative implementation manner, the protective cover 120 in the screen assembly described in the embodiment of the present application may have a single-layer structure. Wherein, the protective cover 120 is provided with a receiving portion 121 in an area close to the display panel 110 and not covering the display panel 110.

For example, the shape of the accommodating portion 121 may be a groove, and the accommodating portion 121 is formed by grooving the protective cover 120 to avoid damage to the protective cover 120 during the processing of the accommodating portion 121.

It can be understood that, in this embodiment, the cost of the screen assembly can be saved by adopting the protective cover 120 of a single-layer structure, and the strength of the protective cover 120 can be enhanced.

Further, for this embodiment, as shown in FIG. 5, in another embodiment of the present application, in order to enhance the light transmission ability of the protective cover 120, so as to reduce the path loss when the infrared light penetrates the protective cover 120 , The inner wall of the groove is coated with an infrared ink coating 124.

Further, for this embodiment, as shown in FIG. 5, in another embodiment of the present application, in order to enhance the display effect of the display panel 110, the protective cover 120 is coated with a color ink coating on the side close to the display panel 110 125.

It should be noted that in the screen assembly described in the embodiment of the present application, the shape of the groove of the protective cover 120 may be any shape that can accommodate the light source module 140. For example, the groove may be a square shape, or may be a trapezoid shape, which is not limited in the embodiment of the present application.

Preferably, the area of the bottom surface of the accommodating part 121 may be smaller than the opening area of the accommodating part. In this way, the accommodating part can be conveniently processed and the infrared ink coating can be applied easily. In addition, the infrared light emitted by the light source module 140 can be better concentrated to further reduce the scattering loss of the infrared light.

Further, as shown in FIGS. 2 and 4, in another embodiment of the present application, the protective cover 120 and the display panel 110 are bonded by optical glue 160, which can prevent the protective cover 120 and the display panel 110 from facing each other. The movement enhances the stability of the relative position between the protective cover 120 and the display panel 110, thereby further enhancing the protection effect of the display panel 110 and prolonging the service life of the display panel 110.

An embodiment of the present application also provides an electronic device including the above-mentioned screen component.

Among them, the electronic device may also include a series of basic components such as a receiver, a speaker, a microphone, and a housing for each component of the solute, which will not be repeated in the embodiment of the present application.

It should be noted that, in the embodiment of the application, the electronic device may be a mobile phone, a tablet computer, a smart wearable device, a personal digital assistant (PDA), a laptop computer, etc. Not limited.

In the embodiment of the present application, the electronic device with the above-mentioned screen assembly can achieve the purpose of under-screen recognition of the image acquisition module, and can reduce the infrared light emitted by the light source module in the process of penetrating the protective cover and the display panel. Loss of path to improve the accuracy of the recognition results under the screen.

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or equipment including a series of elements not only includes those elements, but also includes Other elements that are not explicitly listed, or also include elements inherent to such processes, methods, commodities, or equipment. If there are no more restrictions, the element defined by the sentence "includes a..." does not exclude the existence of other identical elements in the process, method, product, or equipment that includes the element.

Those skilled in the art should understand that the embodiments of the present application can be provided as a method, a system, or a computer program product. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

The above descriptions are only examples of the present application, and are not used to limit the present application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims

A screen component including:

Display panel

The protective cover is located on the light emitting side of the display panel, the protective cover is provided with a receiving portion on a side close to the display panel, and the receiving portion is located in an area where the protective cover does not cover the display panel;

The light source module is accommodated in the accommodating part;

A supporting structure located on the side of the display panel away from the protective cover, and the bottom plate of the supporting structure is provided with a through hole;

The image acquisition module is arranged on the side of the bottom plate away from the display panel and is arranged opposite to the through hole.
The screen assembly according to claim 1, wherein the protective cover plate has a double-layer laminated structure;

The first layer of the protective cover is located on the light emitting side of the display panel, and the first layer is provided with the accommodating portion in an area close to one side of the display panel and not covering the display panel;

The second layer of the protective cover is located on a side of the first layer away from the display panel.
3. The screen assembly of claim 2, wherein the second layer is coated with an infrared ink coating at a position close to one side of the first layer and opposite to the receiving part.
The screen assembly of claim 3, wherein the area of the second layer that is close to the side of the first layer and not coated with the infrared ink coating is coated with a color ink coating.
The screen assembly of claim 2, wherein the first layer and the second layer are bonded by optical glue.
3. The screen assembly according to claim 1, wherein the protective cover has a single-layer structure, and the accommodating portion is provided in an area of the protective cover close to one side of the display panel and not covering the display panel.
7. The screen assembly of claim 6, wherein the inner wall of the groove is coated with an infrared ink coating.
The screen assembly according to claim 7, wherein the bottom area of the receiving part is smaller than the opening area of the receiving part.
7. The screen assembly of claim 6, wherein the protective cover plate is coated with a color ink coating on a side close to the display panel.
9. The screen assembly according to any one of claims 1 to 9, wherein the protective cover and the display panel are bonded by optical glue.
The screen assembly according to any one of claims 1 to 9, wherein the display panel is a liquid crystal display panel.
An electronic device comprising the screen assembly according to any one of claims 1 to 11.