WO2021128068A1

WO2021128068A1 - Display screen and terminal device

Info

Publication number: WO2021128068A1
Application number: PCT/CN2019/128348
Authority: WO
Inventors: 曹华俊; 杨波; 蔡学江; 蒋洪睿
Original assignee: 华为技术有限公司
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2021-07-01
Also published as: JP2023508683A; JP7379715B2; KR20220116034A

Abstract

Provided are a display screen and a terminal device. The display screen comprises a plurality of layer structures, such as a first solar thin-film layer, a display layer and a second solar thin-film layer, which are stacked, wherein the first solar thin-film layer is located at a display face side of the display screen, and the first solar thin-film layer is a solar thin-film layer that allows visible light to be transmitted and absorbs invisible light; and the second solar thin-film layer is located at the side of the display screen that faces away from the display face, and the second solar thin-film layer is a solar thin-film layer that absorbs visible light. According to the above technical solution, two solar thin-film layers are additionally provided in the display screen to absorb solar energy, and both visible light and invisible light can be converted into electric energy without affecting display of the display screen, so as to improve the utilization rate of light energy, and also improve the endurance effect of the display screen and thereby improve the endurance effect of the terminal device.

Description

Display screen and terminal equipment

Technical field

This application relates to the technical field of display screens, and in particular to a display screen and terminal equipment.

Background technique

There are currently three main types of display screens for terminal equipment, namely LCD, OLED, and microLED, and the above-mentioned three display screens require greater energy drive when in use. With the multi-functional development of terminal equipment, more and more functions are integrated in the terminal equipment. When the user uses the terminal equipment, the screen display time is also getting longer and longer, and because the screen uses a large amount of power, Therefore, when the screen is used for a long time, it will cause the terminal device to consume more and more power, which will affect the endurance effect of the terminal device.

Summary of the invention

This application provides a display screen and a terminal device to improve the function of the display screen and increase the battery life of the terminal device.

In the first aspect, a display screen is provided, and the display screen is applied to terminal devices, such as mobile phones, tablet computers, and the like. The display screen includes a plurality of layer structures, such as a laminated first solar thin film layer, a display layer, and a second solar thin film layer; wherein, the first solar thin film layer is located on one side of the display surface of the display screen, and The first solar thin film layer is a solar thin film that can transmit visible light and absorb invisible light; the second solar thin film layer is located on the side of the display screen away from the display surface, and the second solar thin film layer is an absorbent Solar thin film layer for visible light. In the above technical scheme, by adding two layers of solar film in the display screen to absorb solar energy, and without affecting the display of the display screen, both visible light and invisible light can be converted into electrical energy, which improves the utilization rate of light energy. , It also improves the endurance effect of the display screen, thereby improving the endurance effect of the terminal device.

In a specific implementation, the display screen includes a display area and a non-display area; wherein the display layer and the second solar thin film layer are located in the display area; the first solar thin film layer is located in the display area. The display area is extended to the non-display area. The first solar thin film layer can cover the entire display screen, which improves the effect of absorbing solar energy.

In a specific implementation, the display screen further includes a substrate supporting the display layer; the second solar film is disposed on a side of the substrate facing away from the display layer. By integrating the second solar thin film layer on the substrate in the display screen, no additional supporting structure is required.

In a specific implementation, the display screen further includes a transparent cover plate, the transparent cover plate is arranged on one side of the display surface of the display layer; the first solar thin film layer is fixed on the transparent cover plate To the side of the display surface. The first solar thin film layer is integrated on the transparent cover plate to facilitate the fixation of the first solar thin film layer.

In a specific implementation, the second solar thin film layer is a solar thin film layer made of perovskite. Has a good conversion effect.

In a specific embodiment, the first solar thin film layer is an organic solar thin film layer. Has a good conversion effect.

In a specific embodiment, the first solar thin film layer is a solar thin film layer that absorbs infrared light. Can convert infrared light into energy.

In a specific implementation, the display screen further includes a third solar thin film layer; the third solar thin film layer and the display layer are arranged side by side. Increase solar energy utilization through the third solar film.

In a specific implementation, the first solar thin film layer covers the third solar thin film layer. More solar energy can be absorbed by the first solar thin film layer and the third solar thin film layer.

In a specific implementation, the third solar thin film layer is located in a non-display area of the display screen. The laying area of the solar thin film is increased, thereby increasing the utilization rate of solar energy.

In a specific embodiment, it further includes a supporting structure for supporting the third solar thin film layer. It is convenient to fix the third solar thin film layer.

In a specific implementation, the supporting structure may be an existing structure such as a middle frame and a protrusion in the terminal device.

In a specific implementation, the third solar thin film layer is a solar thin film layer made of silicon-based materials. Has a good energy conversion effect.

In a second aspect, a terminal device is provided. The terminal device includes a housing, a battery fixed in the housing, and the display screen as described in any one of the above; and also includes an energy manager, and the solar energy in the display screen The membrane is electrically connected to the battery through the energy manager. In the above technical scheme, by adding two layers of solar film in the display screen to absorb solar energy, and without affecting the display of the display screen, both visible light and invisible light can be converted into electrical energy, which improves the utilization rate of light energy. , It also improves the endurance effect of the display screen, thereby improving the endurance effect of the terminal device.

Description of the drawings

Figure 1 is a schematic structural diagram of a mobile phone provided by an embodiment of the application;

2 is a structural block diagram of a display screen provided by an embodiment of the application;

3 is a schematic diagram of the structure of a substrate provided by an embodiment of the application;

4 is a schematic diagram of the absorption frequency band of the solar thin film provided by an embodiment of the application;

FIG. 5 is a structural block diagram of another display screen provided by an embodiment of the application;

FIG. 6 is a structural block diagram of another display screen provided by an embodiment of the application;

FIG. 7 is a structural block diagram of another display screen provided by an embodiment of the application;

FIG. 8 is a connection block diagram of a solar thin film layer and a battery of a terminal device provided by an embodiment of the application;

FIG. 9 is a structural block diagram of a watch provided by an embodiment of the application;

FIG. 10 is a schematic structural diagram of a third solar thin film corresponding to a watch provided by an embodiment of the application; FIG.

FIG. 11 is a schematic structural diagram of another third solar thin film corresponding to a watch provided by an embodiment of the application.

Detailed ways

In order to facilitate the understanding of the display screen provided by the embodiment of the present application, firstly, the application scenario is explained. The display screen provided in the embodiment of the present application is applied to terminal devices, such as common terminal devices such as watches, mobile phones, tablets, or notebooks. Take a watch as an example. As shown in FIG. 1, a mobile phone includes a housing 100, a battery, a motherboard, and a display 200 arranged in the housing 100. The display 200 is fixed in the housing 100, and the display 200 The display surface is exposed, the battery and the main board are fixed in the housing 100, and the specific connection method is the same as that of the prior art, and will not be repeated here. As shown in Figure 1, the display surface is divided into two areas: a non-display area 202 and a display area 201. The display area 201 is located in the middle of the display surface. The non-display area 202 is arranged around the display screen 200 and surrounds the display area 201. Among them, the display area 201 is used to display images, and the non-display area 202 is used to shield the internal structure and wiring of the display screen 200. With the increasing number of watch applications in the prior art, the power consumption of the mobile phone increases, which affects the battery life of the mobile phone. For this reason, this application provides a display screen 200 to improve the battery life of the terminal device. .

In order to facilitate the understanding of the display screen provided by the embodiment of the present application, firstly, the specific principle will be explained. The display screen in the embodiment of the present application improves the endurance effect of the terminal device by adding a solar film to the layer structure of the display screen. As shown in Figure 2, it shows a block diagram of the internal structure of the display screen provided by the embodiment of the present application. To facilitate understanding, a first direction is defined in the display screen shown in FIG. 2, as shown by the arrow in FIG. 2, the first direction points to the display surface of the display screen. The display screen provided by the embodiment of the present application includes a multi-layer structure stacked in a first direction, such as a protective layer 10, a substrate 30, a display layer 40, a transparent cover 60 and other different layer structures. Wherein, the protective layer 10, the substrate 30, the display layer 40, and the transparent cover are stacked along the first direction 60, and the display layer 40 and the substrate 30 are located in the display area 201 of the display screen. In addition, the above-mentioned multilayer structure includes solar thin film layers: a first solar thin film layer 50, a second solar thin film layer 20, and a third solar thin film layer 80. As shown in FIG. 2, the above three solar thin films are inserted into the layer structure of the display screen. The specific structure will be described in detail below with reference to FIG. 2.

Continuing to refer to FIG. 2, the protective layer 10 in the embodiment of the present application may be a resin layer, a rubber layer, a foam layer, and other common layers with protective functions. A second solar thin film layer 20 is provided on the protective layer 10, and the second solar thin film layer 20 and the substrate 30 may be integrally provided. In FIG. 2, the substrate 30 and the second solar thin film layer 20 are divided into two layers for the convenience of display. However, in the actual preparation process, the second solar thin film layer 20 can be integrated on the substrate 30 and used as an integral structural member. . As shown in FIG. 3, FIG. 3 illustrates a schematic diagram of the integrated structure of the substrate 30 and the second solar thin film layer 20. The substrate 30 includes a support layer 31 and a thin film transistor layer 32, wherein the thin film transistor layer 32 is located on the support layer 31 facing the display On the side of the layer, the second solar thin film layer 20 is arranged on the side of the support layer 31 facing away from the thin film transistor layer 32. During the specific connection, the second solar thin film layer 20 can be directly bonded to the support layer 31 by adhesive glue. In combination with the structure shown in FIG. 2, the second solar thin film layer 20 is located on the side of the substrate 30 away from the display layer 30, and the support layer 31 and the thin film transistor layer 32 in the substrate 30 are made of transparent materials. When the light is irradiated, it passes through the display layer 40, the support layer 31 and the thin film transistor layer 32 in the substrate 30 and irradiates the second solar thin film layer 20. Of course, the placement position of the second solar thin film layer 20 is not limited to the manner shown in FIG. 2 and FIG. 3, and the second solar thin film layer 20 can also be placed on the thin film transistor layer 32. At this time, light can pass through the display layer 40. When the second solar thin film layer 20 is irradiated, the thin film transistor layer 32 and the support layer 31 in the substrate 30 can be made of non-transparent materials.

Continuing to refer to FIG. 2, the second solar thin film layer 20 provided by the embodiment of the present application is located in the display area 201 of the display screen, but the second solar thin film layer 20 is located below the display layer 40. Therefore, the second solar thin film layer 20 can be a visible light-absorbing layer. Solar thin film, and will not affect the display of the screen. Exemplarily, the second solar thin film layer 20 is made of perovskite material. Perovskite is a new type of solar cell material with the advantages of low cost and high efficiency. In addition, the second solar thin film layer 20 is arranged inside the display screen (between the protective layer 10 and the display layer 40) and will not be exposed to the external environment, ensuring the reliability of the second solar thin film layer 20 in use. PV electrodes are drawn from the edges of the second solar thin film layer 20, and the PV electrodes can be connected to the energy manager in the terminal device through wires.

Continuing to refer to FIG. 2, the display layer 40 is disposed on the substrate 30, and the protective layer 10, the second solar thin film layer 20, the substrate 30 and the display layer 40 are arranged in sequence along the first direction. The display screens in the embodiments of the present application may be display screens of different display types, such as microLED, OLED, LCD, etc. Therefore, the display layer 40 provided in the embodiments of the present application can correspond to the display layer of a display screen of a known display type in the prior art, such as the microLED display layer is a layer structure used for display in a microLED, and the OLED display layer is used in an OLED. The layer structure for display and the LCD display layer are the layer structures used for display in the LCD display screen. The above-mentioned layer structures are common structures and will not be further described in this application. At the same time, the specific connection method between the display layer 40 and the substrate 30 also adopts a known conventional connection method, which will not be repeated here.

Continuing to refer to FIG. 2, the display screen provided by the embodiment of the present application further includes a supporting structure 80 and a third solar thin film layer 70 disposed on the protective layer 10. As shown in FIG. 2, the protective layer 10, the supporting structure 80, and the third solar thin film layer 70 are stacked along the first direction. In addition, the laminated second solar thin film layer 20, the substrate 30, the display layer 40, the laminated supporting structure 80, and the third solar thin film layer 70 are arranged side by side on the protective layer 10. Wherein, the laminated support structure 80 and the third solar thin film layer 70 are located in the non-display area 202 of the display screen. Since the non-display area 202 is arranged around the display area 201 (as shown in FIG. 1), the third solar thin film layer 70 A through hole for accommodating the display layer 40 is opened, and the third solar thin film layer 70 is sleeved on the display layer 40 and arranged around the display layer 40. The above-mentioned support structure 80 may be a common structure that can provide support in the display screen, such as a frame. Since the third solar thin film layer 70 is located in the non-display area 202, the absorbed light will not affect the display of the display area 201. Therefore, the third solar thin film layer 70 may be a solar thin film that absorbs visible light. The thin film layer 70 may be a silicon-based material (for example, aSi). When the third solar thin film layer 70 adopts a solar thin film that absorbs visible light, it can also block light from penetrating the third solar thin film layer 70, and achieve the effect of shielding the wiring and chips of the non-display area 202. When the third solar thin film layer 70 is connected to the energy connection manager in the terminal device, PV electrodes are drawn from the edges of the third solar thin film layer 70, and the PV electrodes are connected to the energy manager through wires.

Continuing to refer to FIG. 2, the display screen further includes a first solar thin film layer 50, and the first solar thin film layer 50 is located between the display layer 40 and the transparent cover 60. As shown in FIG. 2, the first solar film layer 50 is supported by a transparent cover plate 60, and the first solar film layer 50 is disposed on the side of the transparent cover plate 60 facing the display layer 40. For example, the first solar film layer 50 is adhered to The glue is directly bonded to the transparent cover plate 60, or the first solar thin film layer 50 and the transparent cover plate 60 are directly made into an integrated structure. Of course, only a specific example of the first solar thin film layer 50 is illustrated in FIG. 2, and the first solar thin film layer 50 may also be supported in other ways in the embodiment of the present application.

Continuing to refer to FIG. 2, since the first solar thin film layer 50 is located above the display layer 40, in order to prevent the first solar thin film layer 50 from affecting the use effect of the display screen. The first solar thin film layer 50 is a transparent solar thin film. Among them, the transparent solar film can transmit visible light in sunlight and absorb invisible light. Exemplarily, the first solar thin film layer 50 adopts an organic solar thin film layer (IR-only OPV film) that only absorbs infrared rays, and the thin film layer is bonded with the transparent cover 60 by optical glue. The bonding is a conventional process. No longer. When the first solar thin film layer 50 is connected to the energy connection manager in the terminal device, PV electrodes are drawn from the edges of the first solar thin film layer 50, and the PV electrodes are connected to the energy manager through wires.

Continuing to refer to FIG. 2, the first solar thin film layer 50 is located in the display area 201 and extends to the non-display area 202, and the first solar thin film layer 50 covers the display layer 40 and the second solar thin film layer 20, so that the first solar thin film The layer 50 has a larger area to improve the utilization rate of light energy. However, it should be understood that the first solar thin film layer 50 in FIG. 2 is only an example, and the first solar thin film layer 50 can also cover only the display layer 40, or only cover the second solar thin film layer 20, which is not limited here. . However, even when the first solar thin film layer 50 only covers the second solar thin film layer 20, the first solar thin film layer 50 still uses a solar thin film that absorbs invisible light, so that the second solar thin film layer 20 can absorb visible light.

Continuing to refer to FIG. 2, it can be seen from the above description that when the solar film provided by the embodiment of the present application is integrated into the display screen, the display screen is the center. The three solar films are in three different positions when they are set up, which are the upper layer of the display layer 40 (such as microLED, OLED, etc.) (the first solar film layer 50), and the display layer 40 is the same layer (the third solar film layer 70). And the lower layer of the display layer 40 (the second solar thin film layer 20).

When the display screen is in use, since the first solar film layer 50 (the film is transparent to the visible light spectrum in sunlight and absorbs the spectrum outside the visible light part) is located on the upper layer of the display layer 40, the sunlight first irradiates the first solar film layer 50. Absorb the non-visible light part through the first solar thin film layer 50. The second solar thin film layer 20 (such as a perovskite material) is located under the display layer 40, wherein the second solar thin film layer 20 absorbs the spectral energy (visible light) passing through the display layer 40. At the same time, the third solar thin film layer 70 (such as an amorphous silicon thin film) on the same layer as the display layer 40 (microLED, OLED) absorbs the solar spectral energy (visible light) that passes through the transparent cover 60 and is located outside the display area 201.

As shown in Figure 4, Figure 4 illustrates the spectral corresponding curves of the above three solar thin films. The solid line in Figure 4 represents the light band corresponding to the third solar thin film layer 70, and the dotted line corresponds to the second solar thin film layer 20. The dashed line corresponds to the light waveband corresponding to the first solar thin film layer 50. It can be seen from Figure 4 that solar films made of different solar materials correspond to different wavebands. For example, the light waveband corresponding to the third solar film layer 70 is 150nm～750nm (shown by the solid line in the figure); the second solar film layer 20 The corresponding light waveband is 350nm-2400nm (shown by the dotted line in the figure); the light waveband corresponding to the first solar thin film layer 50 is above 750nm (shown by the dashed line in the figure). The combination of the three solar thin films can cover the main energy range of the solar spectrum (400nm～1200nm) relatively completely. The above three solar thin films work together to achieve low-cost and maximum solar energy utilization.

As shown in Fig. 5, Fig. 5 illustrates a schematic structural diagram of another display screen, and the reference numerals in Fig. 5 can refer to the same reference numerals in Fig. 2. The display screen shown in FIG. 5 only includes two solar thin films, wherein the second solar thin film layer 20 is integrated on the substrate 30 and the third solar thin film layer 70 is a solar thin film disposed in the non-display area 202.

As shown in FIG. 6, FIG. 6 illustrates a schematic structural diagram of another display screen, and the reference numerals in FIG. 6 can refer to the same reference numerals in FIG. 2. The display screen shown in FIG. 6 only includes two solar thin films, wherein the second solar thin film layer 20 is integrated on the substrate 30 and the first solar thin film layer 50 is a solar thin film disposed on the transparent cover 60.

As shown in FIG. 7, FIG. 7 illustrates a schematic structural diagram of another display screen, and the reference numerals in FIG. 7 can refer to the same reference numerals in FIG. 2. The display screen shown in FIG. 7 only includes a second solar thin film layer 20, and the second solar thin film layer 20 is integrated on the substrate 30. Fig. 7 is only an example of using a solar film. When a solar film is used in the display screen, the first solar film provided under the transparent cover or the third solar film provided in the non-display area can also be used.

It can be seen from the above description that the solar thin film provided by the embodiment of the present application can be set as required, as shown in FIG. 8, which illustrates the connection block diagram of the solar thin film layer and the battery of the terminal device. The first solar film layer 50, the second solar film layer 20, and the third solar film layer 70 can be connected to the energy manager 300 (chip) of the terminal device. The basic function of the energy manager 300 is to control the output of the three solar modules. Combine and aggregate, convert between series and parallel, etc., and output the aggregated electric energy to the battery 400 of the terminal device. The battery 400 can be an existing mobile phone battery, a computer battery, etc., and is a conventional component.

It can be seen from the above description that the display screen provided in the embodiments of this application can combine three parts of the solar thin film layer and its mechanism, and the energy manager connected to it. The above several parts (including the solar thin film layer and the energy manager) can be Flexible combination, make a choice according to the specific design requirements of the product. The choice of combination depends on the overall demand for solar energy harvesting of the actual product.

The embodiments of the present application also provide a terminal device. The terminal device can be a common terminal device such as a watch, a mobile phone, a tablet computer, etc. However, no matter which terminal device is used, it includes a casing, a battery fixed in the casing, and any of the foregoing. A display screen; further comprising an energy manager, and the solar film in the display screen is electrically connected to the battery through the energy manager. Among them, the solar film in the display screen is electrically connected to the battery. In the following, a watch is taken as an example for description in conjunction with the drawings.

As shown in Figure 9, Figure 9 illustrates a schematic diagram of the internal structure of a watch. The watch includes a housing 100, a battery 400, and a display screen. The three black boxes represent three solar thin films. The first solar thin film layer 50 is a solar thin film used to transmit the visible part of sunlight, and the third solar thin film layer 70 is a solar thin film made of silicon-based materials. The second solar thin film layer 20 is a solar thin film that shares a substrate with the OLED (perovskite material is used in this embodiment). The energy manager 300 of the watch is implemented by a chip. The main functions include: power collection, charge storage, and DC-DC conversion (DC-DC conversion), load output, where the load can be battery 400 (watch lithium battery, the above functions are all It can be implemented by a known chip, so the specific structure of the chip will not be described in detail here.

As shown in Figure 9, the first solar thin film layer 50 is a solar thin film used to transmit the visible part of sunlight. This time, an organic solar thin film (IR-only OPV film) that only absorbs infrared light is used. This film uses optical The glue is bonded to the transparent cover plate 60, and this bonding is a conventional process. A PV electrode is drawn at the edge of the dial, and the electrode is connected to the energy manager 300.

Continuing to refer to FIG. 9, the third solar thin film layer 70 is a solar thin film made of a silicon-based material (for example, aSi). The internal movement structure of the watch serves as a mechanical support for the third solar film layer 70, and the third solar film layer 70 is connected to the mechanical support structure of the movement through a bonding process. The bonding process is an ordinary process. The third solar thin film layer 70 is processed into a specific shape, such as a regular-shaped square or circular structure inside, as shown in Figure 10 below. The third solar thin film layer 70 has a circular hole in the middle, as shown in Figure 11. The third solar thin film layer 70 has a rectangular hole in the middle. The cut shape of the third solar thin film layer 70 is the same as the shape of the corresponding display layer 40, and different arrangements can be adopted as required.

Continuing to refer to FIG. 9, the second solar thin film layer 20 is disposed under the display layer 40. Here, the OLED adopts a glass substrate, and the second solar thin film layer 20 is made of perovskite material. In this embodiment, a UV cut material is specially introduced into the display screen. This material, together with the common substrate structure and the perovskite solar thin film material, constitute a complete embodiment of the above common substrate structure.

It can be seen from the above description that, in the embodiment of the present application, the existing display screens (mobile phone display screens, watch display screens, etc.) do not support integrated solar thin film collection in terms of structure. The present invention starts from a practical, low-cost, and high-efficiency solar energy collection scheme, and defines a future terminal display screen structure integrating solar thin film collection, which can be realized within the scope of display screen technology compatibility.

The above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any person skilled in the art can easily conceive of changes or substitutions within the technical scope disclosed in this application, which shall cover Within the scope of protection of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

A display screen, characterized in that it comprises a laminated first solar thin film layer, a display layer and a second solar thin film layer; wherein,

The first solar thin film layer is located on a side of the display surface of the display screen, and the first solar thin film layer is a solar thin film that can transmit visible light and absorb invisible light;

The second solar thin film layer is located on a side of the display screen away from the display surface, and the second solar thin film layer is a solar thin film layer that absorbs visible light.
The display screen according to claim 1, wherein the display screen includes a display area and a non-display area; wherein,

The display layer and the second solar thin film layer are located in the display area;

The first solar thin film layer is located in the display area and extends to the non-display area.
The display screen according to claim 1 or 2, wherein the display screen further comprises a substrate carrying the display layer;

The second solar film is disposed on the side of the substrate away from the display layer.
The display screen according to claim 3, wherein the display screen further comprises a transparent cover plate, and the transparent cover plate is arranged on a side of the display surface of the display layer;

The first solar thin film layer is fixed on a side of the transparent cover plate facing the display surface.
The display screen according to any one of claims 1 to 4, wherein the second solar thin film layer is a solar thin film layer made of perovskite.
The display screen according to any one of claims 1 to 5, wherein the first solar thin film layer is an organic solar thin film layer.
The display screen according to any one of claims 1 to 6, wherein the display screen further comprises a third solar thin film layer; the third solar thin film layer and the display layer are arranged side by side.
8. The display screen of claim 7, wherein the first solar thin film layer covers the third solar thin film layer.
8. The display screen of claim 7, further comprising a supporting structure for supporting the third solar thin film layer.
The display screen according to any one of claims 7-9, wherein the third solar thin film layer is a solar thin film layer made of silicon-based materials.
A terminal device, characterized by comprising a casing, a battery fixed in the casing, and the display screen according to any one of claims 1 to 10; and further comprising an energy manager, and the solar energy in the display screen The membrane is electrically connected to the battery through the energy manager.