Display module, cover plate assembly and electronic equipment

Abstract

The invention relates to a display module, a cover plate assembly and electronic equipment. The display module comprises a first polaroid, a first display panel and a first optical film; the first surface of the first polaroid is attached to the first display panel; the first optical film is arranged on the second surface of the first polarizing film, and the first surface is opposite to the second surface; wherein the transmissivity of the first optical film to visible light is higher than the transmissivity of invisible light, and / or the reflectivity of the first optical film to invisible light is higher than the reflectivity of the first optical film to visible light.

Description

Technical Field

[0001] The present disclosure relates to the field of electronic technology, and in particular to a display module, a cover assembly and an electronic device. Background Art

[0002] With the rapid popularization of 5G (5th Generation Mobile Communication Technology) technology and the gaming field, the power consumption of electronic devices such as mobile phones and tablets continues to increase, and the increase in power consumption causes the heat generation of electronic devices to increase. Since the stacking thickness of electronic devices has not increased, the heat dissipation space and heat dissipation area are limited, resulting in the heat dissipation of the internal heating components of electronic devices being blocked, and poor heat dissipation of electronic devices will cause heating; in addition, electronic devices have large external thermal resistance when used in outdoor scenes, and the heat flux density required to dissipate heat from mobile phones is high. If the heat cannot be effectively transferred out of the electronic device, the temperature will rise sharply, seriously affecting the consumer experience and even threatening battery safety. Summary of the invention

[0003] The present disclosure provides a display module, a cover plate assembly and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a display module is provided, the display module comprising: a first polarizer, a first display panel and a first optical film;

[0005] The first surface of the first polarizer is attached to the first display panel;

[0006] The first optical film is disposed on the second surface of the first polarizer, the first surface and the second surface are opposite to each other;

[0007] The transmittance of the first optical film to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film to non-visible light is higher than that to visible light.

[0008] In some embodiments, the first display panel is a first organic light emitting diode (OLED) display panel;

[0009] The first polarizer covers the light-emitting side of the first OLED display panel.

[0010] In some embodiments, the first display panel is a first liquid crystal display panel;

[0011] The display module further includes: a second polarizer;

[0012] The first liquid crystal display panel is located between the first polarizer and the second polarizer;

[0013] The first polarizer is located on the light-emitting side of the first liquid crystal display panel.

[0014] In some embodiments, the first optical film includes at least two film layers stacked;

[0015] The at least two film layers have different refractive indices and / or reflectivity;

[0016] The transmittance of the first optical film to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film to non-visible light is higher than that to visible light.

[0017] In some embodiments, the number of the film layers is greater than 2*N, wherein N is a positive integer greater than or equal to 1;

[0018] The number of the first film layers and the number of the second film layers are both N, and the first film layers and the second film layers are alternately stacked and distributed.

[0019] In some embodiments, the film layer includes: an oxide film layer made of oxide.

[0020] In some embodiments, the first film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer;

[0021] and / or,

[0022] The second film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

[0023] In some embodiments, the total thickness of the first optical film is in a range of 0.5 micrometers to 3 micrometers.

[0024] In some embodiments, the reflectivity of the first optical film to ultraviolet light and / or infrared light is higher than the reflectivity to visible light;

[0025] and / or,

[0026] The transmittance of the first optical film to the first infrared light is higher than the transmittance of the second infrared light; wherein the first infrared light is the infrared emission light radiated by the first display panel; and the second infrared light is different from the first infrared light.

[0027] In some embodiments, the wavelength of the first infrared light is in the range of 5 μm-15 μm.

[0028] In some embodiments, the first optical film has fenestrations;

[0029] The window is used for the infrared light emitted by the target sensor to pass through.

[0030] In some embodiments, the first optical film includes a coating.

[0031] According to a second aspect of an embodiment of the present disclosure, there is provided a cover plate assembly, comprising:

[0032] A transparent cover plate having a third surface and a fourth surface, wherein the third surface is used to be attached to the second display module; wherein the fourth surface is the opposite surface of the third surface;

[0033] A second optical film is attached to the fourth surface of the transparent cover plate; wherein the transmittance of the second optical film to visible light is higher than that to non-visible light, and / or the reflectivity of the second optical film to non-visible light is higher than that to visible light.

[0034] In some embodiments, the second optical film is attached to the third surface of the transparent cover plate;

[0035] The second optical film is disposed between the transparent cover plate and the second display module.

[0036] In some embodiments, the second optical film includes at least two film layers stacked;

[0037] The at least two film layers have different refractive indices and / or reflectivity;

[0038] The transmittance of the second optical film to visible light is higher than that to non-visible light, and / or the reflectance of the second optical film to non-visible light is higher than that to visible light.

[0039] In some embodiments, the number of the film layers is greater than 2*M, wherein M is a positive integer greater than or equal to 1;

[0040] The number of the third film layer and the number of the fourth film layer are both M, and the third film layers and the fourth film layers are alternately stacked and distributed.

[0041] In some embodiments, the third film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer;

[0042] and / or,

[0043] The fourth film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

[0044] In some embodiments, the reflectivity of the second optical film to ultraviolet light and / or infrared light is higher than the reflectivity to visible light;

[0045] and / or,

[0046] The transmittance of the second optical film to the third infrared light is higher than the transmittance of the fourth infrared light; wherein the third infrared light is the infrared emission light radiated by the second display module; and the fourth infrared light is different from the third infrared light.

[0047] In some embodiments, the wavelength of the third infrared light is in the range of 5 μm-15 μm.

[0048] In some embodiments, the second optical film has fenestrations;

[0049] The window is used for the infrared light emitted by the target sensor to pass through.

[0050] According to a third aspect of an embodiment of the present disclosure, an electronic device is provided, wherein the electronic device comprises the display module described in the first aspect above, and / or the cover assembly described in the second aspect above.

[0051] The disclosed embodiment of the present invention discloses a display module, a cover plate assembly and an electronic device, wherein the first surface of a first polarizer is bonded to a first display panel, and the second surface is provided with a first optical film, and the transmittance of visible light and the reflectivity of non-visible light are improved by the first optical film, and the energy emissivity of the optical film within the wavelength range of the atmospheric window is improved, so that the heat generated by the electronic device can pass through the atmosphere to exchange radiation heat with the outer space, thereby improving the radiation heat exchange energy and reducing the temperature of the electronic device.

[0052] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0054] Figure 1 is a schematic diagram of a screen of an electronic device in the prior art according to an exemplary embodiment;

[0055] Figure 2a is a schematic diagram of a radiation cooling film according to an exemplary embodiment;

[0056] Figure 2b is a schematic diagram of a reflective radiation cooling film according to an exemplary embodiment;

[0057] Figure 3 is a schematic structural diagram of a display module according to an exemplary embodiment;

[0058] Figure 4 is one of the structural schematic diagrams of a display module according to an exemplary embodiment;

[0059] Figure 5 is a second structural schematic diagram of a display module according to an exemplary embodiment;

[0060] Figure 6 is a schematic structural diagram of a first optical film according to an exemplary embodiment;

[0061] Figure 7 is a structural schematic diagram of a cover plate assembly according to an exemplary embodiment;

[0062] Figure 8 is a schematic structural diagram of another cover plate assembly according to an exemplary embodiment;

[0063] Fig. 9 is one of the structural schematic diagrams of a second display module according to an exemplary embodiment;

[0064] Fig.10 is a second structural schematic diagram of a second display module according to an exemplary embodiment;

[0065] Fig.11 is one of the structural schematic diagrams of an electronic device according to an exemplary embodiment;

[0066] Fig.12 is a second structural schematic diagram of an electronic device according to an exemplary embodiment;

[0067] Fig.13 is a third structural schematic diagram of an electronic device according to an exemplary embodiment;

[0068] Fig.14 is a fourth structural schematic diagram of an electronic device according to an exemplary embodiment;

[0069] Fig.15 is a schematic diagram of a stacking structure of an electronic device according to an exemplary embodiment;

[0070] Fig.16 is a schematic diagram of a stacking structure of another electronic device according to an exemplary embodiment;

[0071] Fig.17 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0072] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present disclosure as detailed in the appended claims.

[0073] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "said" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0074] There are at least two ways to improve the heat dissipation of electronic equipment: first, to improve the heat dissipation capacity of the heat source inside the electronic equipment to the external environment. Second, to reduce the increase in heat power caused by various reasons, including the situation where the external environment inputs radiation energy to the electronic equipment, resulting in an increase in heat power.

[0075] The external environment refers to the environment where the electronic equipment is located. It can be an outdoor environment or an indoor environment. For the outdoor environment, the radiation energy input to the electronic equipment includes solar energy. For the indoor environment, the radiation energy input to the electronic equipment includes the radiation energy generated by heating appliances, light sources, etc.

[0076] Taking solar energy as an example, for some electronic devices, the solar radiation power received by the electronic devices is equivalent to the heat power of the electronic devices themselves. For example, taking mobile phones as an example, some mobile phones receive about 15W of solar radiation at noon, which is about 3 to 5 times the power consumption of mobile phones in gaming scenarios.

[0077] The radiant energy from the external environment will not only cause the external thermal resistance of electronic devices to be large, but also the heat flux density required to dissipate heat from the electronic devices to be high. If the heat cannot be effectively transferred out of the electronic devices, the temperature will rise sharply, affecting the consumer experience and even threatening battery safety.

[0078] For the above problems, if we start from the first aspect, an unconventional screen cooling method, namely active cooling, is often used. In strong demand scenarios such as outdoor display, fans are usually used to set flow channels outside the screen to enhance the convective heat exchange of the electronic device screen so that the heat generated and absorbed by the screen can be dissipated in time. However, due to the need for additional energy input and fans, fins, etc., this active cooling method will increase the gravity and energy consumption of electronic equipment and reduce reliability; in addition, in the field of electronic devices such as mobile phones and tablets, such as Figure 1 As shown, the energy consumption and space of electronic equipment are strictly controlled, and this active heat dissipation method is not applicable.

[0079] If we start from another aspect, we can use film to improve the heat dissipation problem of electronic equipment. However, the film method to improve heat dissipation is currently mostly used in the construction field. Building material manufacturers generally use relatively single radiant cooling paint, radiant cooling fiber and reflective radiant cooling film as cooling fabrics, building facade cooling paint, building facade cooling plastic steel plate or building material plate, and some building glass with UV protection. Figure 2a and Figure 2b As shown. If this type of film is applied to electronic devices, at least the following problems will occur: the film material of the above film contains metal or conductive compounds (such as ITO, TiN, etc.), which are conductive. Although it can reduce the input radiation of the sun, it has a shielding effect on electromagnetic signals, and the basic light transmittance is too low, making it difficult to be used in electronic devices. Alternatively, the film material of the above film is mainly used to reflect energy in the ultraviolet wavelength range. The energy in the ultraviolet wavelength range accounts for about 7% of the sun's radiation energy. The spectral adjustment of this film material is poor, and the reduction of the sun's input radiation energy is limited.

[0080] To this end, the embodiments of the present disclosure provide the following technical solutions.

[0081] like Figure 3 As shown, according to the first embodiment of the present disclosure, a display module 10 is provided, and the display module 10 includes: a first polarizer 120, a first display panel 130 and a first optical film 110;

[0082] The first surface of the first polarizer 120 is attached to the first display panel 130;

[0083] The first optical film 110 is disposed on the second surface of the first polarizer 120, and the first surface is opposite to the second surface;

[0084] The transmittance of the first optical film 110 to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film 110 to non-visible light is higher than that to visible light.

[0085] Here, the display module 10 may also be referred to as a first display module 10 .

[0086] Specifically, the solar spectrum is divided into visible light and non-visible light. The wavelength range of visible light is 400nm to 760nm. After scattering, it can be divided into seven colors: red, orange, yellow, green, cyan, blue, and purple. When concentrated, it is white light. Non-visible light is divided into infrared and ultraviolet light. The wavelength range of ultraviolet light is 290nm to 400nm, and the wavelength range of infrared light is 760nm to 15μm. Among them, the wavelength of near infrared light is 750nm to 1.1μm, the wavelength of short infrared light is 1.1μm to 2.5μm, the wavelength of mid-infrared light is 3μm to 5μm, and the wavelength of long infrared light is 7μm to 15μm.

[0087] Solar radiation energy accounts for 43% of the energy in the visible light wavelength range, 50% of the energy in the near-infrared wavelength range, and about 7% of the energy in the ultraviolet wavelength range.

[0088] In this embodiment, the transmittance of the first optical film to visible light is higher than that to infrared and / or ultraviolet rays, thereby ensuring the display effect of the display panel in the display module; the reflectivity of the first optical film to infrared and / or ultraviolet rays is higher than that to visible light, thereby reducing more solar radiation energy and improving the radiation cooling effect of the optical film.

[0089] The first display panel may include an organic light emitting diode (OLED) display panel and a liquid crystal (LCD) display panel. The LCD display panel relies on a backlight panel to emit light through an LED backlight, while the OLED display panel emits light by itself.

[0090] According to some optional embodiments, Figure 4 As shown, Figure 4 is one of the structural schematic diagrams of a display module, wherein the first display panel 130 is a first organic light emitting diode OLED display panel 131;

[0091] The first polarizer 120 covers the light emitting side of the first OLED display panel 131 .

[0092] For example, in one embodiment, the first optical film 110 is disposed on the first polarizer 120, and the first polarizer 120 covers the light-emitting side of the first OLED display panel 131 (not shown in the figure). Figure 4 shown.

[0093] According to some optional embodiments, the first display panel is a first liquid crystal display panel 132;

[0094] The first display module further includes: a second polarizer 140;

[0095] The first liquid crystal display panel 132 is located between the first polarizer 120 and the second polarizer 140;

[0096] The first polarizer 120 is located at the light-emitting side of the first liquid crystal display panel 132 .

[0097] In some embodiments, the first display module further includes: a first backlight module 150 .

[0098] For example, in one embodiment, the first optical film 110 can be disposed on the first polarizer 120, and the first liquid crystal display panel 132 is located between the first polarizer 120 and the second polarizer 140; the first polarizer 120 is located on the light emitting side of the first liquid crystal display panel 132 (not shown in the figure), and the first backlight module 150 is located below the second polarizer 140. Figure 5 shown.

[0099] In some embodiments, the reflectivity of the first optical film to ultraviolet light and / or infrared light is higher than its reflectivity to visible light; and / or the transmittance of the first optical film to first infrared light is higher than the transmittance of second infrared light; wherein the first infrared light is infrared emission light radiated by the first display panel; and the second infrared light is different from the first infrared light.

[0100] Here, the first infrared light is infrared emission light radiated outward by the first display panel, and the second infrared light is infrared light other than the first infrared light.

[0101] The reflectivity of the first optical film to ultraviolet light and / or infrared light is higher than that to visible light so as to reduce the amount of solar radiation energy received by the electronic device from the outside world; while the transmittance of the first optical film to the first infrared light is higher than that of the second infrared light, the first optical film can also emit the first infrared light radiated by the first display panel outwardly, so that the radiation cooling effect of the optical film can be further improved.

[0102] In this embodiment, the first infrared light wavelength range is the atmospheric window wavelength range, and the optical film has a high emissivity to energy within the atmospheric window wavelength range.

[0103] In some embodiments, the wavelength range of the first infrared light, i.e., the atmospheric window wavelength range, is 5 μm-15 μm;

[0104] Preferably, the first infrared light has a wavelength ranging from 8 μm to 13 μm.

[0105] Preferably, the first infrared light has a wavelength range of 9 μm to 12 μm.

[0106] When it has a high emissivity within the atmospheric window wavelength range, the radiation energy can pass through the atmosphere and conduct radiation heat exchange with outer space (temperature is -270°C). When the display module containing the optical film is used in electronic equipment, the radiation heat exchange between the electronic equipment and outer space can be effectively enhanced, which is beneficial to increase the heat of radiation heat exchange and improve the heat dissipation effect.

[0107] The application scenarios of the display module of the embodiment of the present disclosure include at least: outdoors (outdoors), when exposed to solar radiation, the optical film in the display module has a radiation cooling function, which improves the heat dissipation problem of the electronic device including the display module of the embodiment of the present disclosure.

[0108] According to some optional embodiments, the first optical film 110 includes at least two film layers stacked;

[0109] The at least two film layers have different refractive indices and / or reflectivity;

[0110] The transmittance of the first optical film to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film to non-visible light is higher than that to visible light.

[0111] According to some optional embodiments, the number of the film layers is greater than 2*N, wherein N is a positive integer greater than or equal to 1; the number of the first film layers and the number of the second film layers are both N, and the first film layers and the second film layers are alternately stacked.

[0112] Without limitation, the film layer may be formed by coating methods such as magnetron sputtering, electron beam evaporation coating, resistive thermal evaporation coating, etc. For example, a first film layer may be formed by coating and depositing on the first polarizer by at least one method such as magnetron sputtering, electron beam evaporation coating, resistive thermal evaporation coating, etc., and then a second film layer may be formed by depositing on the first film layer, and so on.

[0113] It should be noted that the first polarizer is made of a soft polymer material. To set the first optical film on the first polarizer, the first polarizer needs to be pre-treated so that a hardened layer is coated on the first polarizer. Then, a first film layer is deposited on the first polarizer by magnetron sputtering, electron beam evaporation coating, resistive thermal evaporation coating, lamination or other coating methods to form a first film layer. Then, a second film layer is deposited on the first film layer, and so on.

[0114] Specifically, in this embodiment, the number of the first film layers and the number of the second film layers are equal.

[0115] When there are multiple first film layers, the thicknesses of the multiple first film layers may be the same or different.

[0116] When there are multiple second film layers, the thicknesses of the multiple second film layers may be the same or different.

[0117] By adjusting the number of film layers and / or the thickness of the film layers, at least the optical film can achieve total reflection in the near-infrared wavelength range and total transmission in the visible light wavelength range. The layer thickness includes the layer thickness of the first film layer and / or the layer thickness of the second film layer.

[0118] In some embodiments, the total thickness of the first optical film is the sum of the thicknesses of the first film layer and the second film layer; the total thickness of the first optical film can be between 0.5 microns and 3 microns. Exemplarily, the total thickness of the first optical film can be 0.8 microns, 1.5 microns, etc.

[0119] In this embodiment, the high emissivity of the first optical film in the first infrared range can allow the heat generated by the electronic device to pass through the atmosphere and exchange heat with outer space through radiation, thereby increasing the radiation heat exchange energy and reducing the temperature of the electronic device. The high reflectivity of the at least two film layers included in the first optical film to the light in the near-infrared wavelength range can reduce the input radiation of the environment and reduce the increase in the heating power of the electronic device caused by the environmental radiation.

[0120] In some examples, the first optical film also has good transmittance in the visible light range, so that the first optical film can also play a role in the display module, expanding the scope of use of the optical film.

[0121] Therefore, the first optical film of the embodiment of the present disclosure can reduce thermal conductivity resistance, improve radiation cooling effect, and improve heat dissipation problem.

[0122] Figure 6 A schematic diagram of the structure of a first optical film is shown, such as Figure 6 As shown, at least one first film layer 111 and at least one second film layer 112 are alternately distributed. The refractive index of the first film layer 111 is a first refractive index, the refractive index of the second film layer 112 is a second refractive index, and the refractive indexes of two adjacent film layers are different, and the first refractive index is different from the second refractive index.

[0123] It should be noted that the at least two film layers with different refractive indices included in the first optical film can adjust the optical properties, and the alternating stacking distribution of the at least two film layers can further ensure the adjustment effect of the optical properties of the optical film, so as to achieve a higher reflectivity in the near-infrared wavelength range, a higher emissivity in the 5μm-15μm wavelength range, and a higher transmittance in the visible light range.

[0124] According to some optional embodiments, the first refractive index is higher than the second refractive index; according to other optional embodiments, the first refractive index may also be lower than the second refractive index.

[0125] In some embodiments, the number of the first film layer 111 and the second film layer 112 are equal. In the alternating distribution of the first film layer 111 and the second film layer 112, if the refractive index of the first film layer 111 is higher than the refractive index of the second film layer 112, when the multiple film layers are stacked, the first stacking distribution method can be adopted: first stack the first film layer 111, then stack the second film layer 112 on the first film layer 111, and then stack the first film layer 111 on the second film layer 112 again... and so on.

[0126] Alternatively, the second stacking distribution method may be adopted: first stack the second film layer 112, then stack the first film layer 111 on the second film layer 112, and then stack the second film layer 112 on the first film layer 111 again... and so on. Figure 6 An optical film having a stacked distribution in the second manner is exemplarily shown.

[0127] In other embodiments, the number of the first film layers 111 may not be equal to the number of the second film layers 112. For example, when the first stacking distribution method is adopted, the number of the first film layers 111 may be one more layer than the number of the second film layers 112. When the second stacking distribution method is adopted, the number of the first film layers 111 may be one less layer than the number of the second film layers 112.

[0128] According to some optional embodiments, the film layer includes: an oxide film layer made of oxide.

[0129] Specifically, the oxides are all insulating oxides; at the same time, in order not to affect the appearance color of the display module of the electronic device when the screen is off, the oxides are all transparent inorganic oxides.

[0130] In this way, not only can the optical film of the embodiment of the present disclosure have insulating properties and will not affect the antenna function of the electronic device when used in the electronic device, but it can also ensure that the appearance color of the electronic device display module is not affected when the screen is turned off.

[0131] Without limitation, the transparent inorganic compound includes TiOx and SiOx, wherein x is a positive number greater than zero.

[0132] According to some optional embodiments, the first film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer; and / or, the second film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

[0133] For example, the compositions of the plurality of first film layers may be the same or different; and / or the compositions of the plurality of second film layers may be the same or different.

[0134] The multiple first film layers in the optical film are distributed at intervals, and the multiple first film layers distributed at intervals can be the same or different. Similarly, the multiple second film layers distributed at intervals can be the same or different. For example: the multiple first film layers in the optical film can all be TiO2 layers, but some of the multiple second film layers can be SiO2 layers, and the other part of the second film layers can be Si3N4 layers.

[0135] In this embodiment, the optical film has a high emissivity for light in the first infrared wavelength range, which allows the heat generated by the electronic device to pass through the atmosphere and exchange heat with outer space through radiation, thereby increasing the radiation heat exchange energy and reducing the temperature of the electronic device. The high reflectivity of the multilayer film layer for light in the near-infrared wavelength range can reduce the input radiation of the environment and reduce the increase in the heating power of the electronic device caused by environmental radiation. In addition, the optical film of the embodiment of the present disclosure has insulating properties, and its application in electronic devices will not affect the antenna function of the electronic device.

[0136] According to some optional embodiments, the first optical film has a window; the window is used for infrared light emitted by a target sensor (not shown in the figure) to pass through.

[0137] Specifically, the area of ​​the first optical film is smaller than or equal to the first display panel.

[0138] According to some optional embodiments, the target sensor includes a distance sensor.

[0139] Specifically, the target sensor may be a light sensor, or a distance sensor, etc.; illustratively, the distance sensor may be an infrared sensor, or an ultrasonic sensor, etc.

[0140] In one embodiment, the target sensor is an infrared distance sensor. Exemplarily, the infrared wavelength range sent by the infrared sensor may be 940nm to 950nm.

[0141] For example, in order to allow the distance sensor in the electronic device to normally emit infrared light, a window is opened at the projection position of the distance sensor on the first optical film 110 so that the infrared light emitted by the distance sensor can pass through.

[0142] The above-mentioned window opening method may include not setting a film layer at the projection position of the distance sensor on the first optical film 110, or removing the film layer at the projection position on the optical film by masking, covering, polishing, etc.

[0143] Exemplarily, the number of layers and / or layer thickness of the film system can be adjusted to perform bandpass processing on the infrared light wavelength emitted by the distance sensor, so that the first optical film has high transmittance to light within the infrared light wavelength range emitted by the distance sensor.

[0144] According to some optional embodiments, the first optical film includes a coating film.

[0145] In the embodiment of the present disclosure, the optical film has a high emissivity of light in the first infrared wavelength range, which can allow the heat generated by the electronic device to pass through the atmosphere and exchange heat with outer space through radiation, thereby increasing the radiation heat exchange energy and reducing the temperature of the electronic device. By using at least two film layers with a high reflectivity of light in the near-infrared wavelength and mid-infrared wavelength range, the input radiation of the environment can be reduced, and the increase in the heating power of the electronic device caused by environmental radiation can be reduced. In addition, the optical film of the embodiment of the present disclosure has insulating properties, and its application in electronic devices will not affect the antenna function of the electronic device.

[0146] In some examples, the optical film also has good transmittance in the visible light range and will not affect the normal display of the display screen, so that the heat dissipation optical film can also play a role in the display screen, expanding the scope of use of the optical film.

[0147] Therefore, the optical film of the embodiment of the present disclosure can reduce thermal conductivity resistance, improve radiation cooling effect, and improve heat dissipation problem.

[0148] like Figure 7 As shown, according to a second embodiment of the present disclosure, a cover plate assembly 20 is provided, comprising:

[0149] The transparent cover plate 21 has a third surface and a fourth surface, wherein the third surface is used to be attached to the second display module 22; wherein the fourth surface is the opposite surface of the third surface;

[0150] The second optical film 23 is attached to the fourth surface of the transparent cover plate 21; wherein the transmittance of the second optical film to visible light is higher than that to non-visible light, and / or the reflectivity of the second optical film to non-visible light is higher than that to visible light.

[0151] Here, the second optical film 23 is the same as the first optical film 110 disclosed in the first embodiment of the present disclosure; the structure of the second display module 22 is the same as the structure of the first display module 10 disclosed in the first embodiment of the present disclosure without including the first optical film 110.

[0152] In one embodiment, the fourth surface is the outer surface of the transparent cover plate in contact with the external environment; illustratively, the third surface is attached to the second display module 22, and the second optical film 23 is attached to the fourth surface.

[0153] In other embodiments, the transparent cover plate 21 may also be a shell.

[0154] In some other embodiments, illustratively, the second optical film 23 may also be disposed between the transparent cover plate 21 and the second display module 22, the second optical film 23 is attached to the third surface of the transparent cover plate 21, and the second display module 22 is attached to the second optical film 23, such as Figure 8 shown.

[0155] According to some optional embodiments, the second optical film 23 includes at least two film layers stacked;

[0156] The at least two film layers have different refractive indices and / or reflectivity;

[0157] The transmittance of the second optical film 23 to visible light is higher than that to non-visible light, and / or the reflectance of the second optical film 23 to non-visible light is higher than that to visible light.

[0158] According to some optional embodiments, the number of the film layers is greater than 2*M, wherein M is a positive integer greater than or equal to 1;

[0159] The number of the third film layer and the number of the fourth film layer are both M, and the third film layers and the fourth film layers are alternately stacked and distributed.

[0160] According to some optional embodiments, the third film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer;

[0161] and / or,

[0162] The fourth film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

[0163] According to some optional embodiments, the reflectivity of the second optical film 23 to ultraviolet light and / or infrared light is higher than the reflectivity to visible light; and / or the transmittance of the second optical film 23 to third infrared light is higher than the transmittance of fourth infrared light; wherein the third infrared light is the infrared emission light radiated by the second display module 22; and the fourth infrared light is different from the third infrared light.

[0164] According to some optional embodiments, the wavelength range of the third infrared light is 5 μm-15 μm.

[0165] According to some optional embodiments, the second optical film 23 has a window; the window is used for infrared light emitted by a target sensor (not shown in the figure) to pass through.

[0166] Specifically, the area of ​​the second optical film 23 is smaller than or equal to the transparent cover plate.

[0167] According to some optional embodiments, the target sensor includes a distance sensor.

[0168] Specifically, the target sensor may be a light sensor, or a distance sensor, etc.; illustratively, the distance sensor may be an infrared sensor, or an ultrasonic sensor, etc.

[0169] In one embodiment, the target sensor is an infrared distance sensor. Exemplarily, the infrared wavelength range sent by the infrared sensor may be 940nm to 950nm.

[0170] Exemplarily, in order to allow the distance sensor in the electronic device to normally emit infrared light, a window is opened at the projection position of the distance sensor on the second optical film 23 so that the infrared light emitted by the distance sensor can pass through.

[0171] The above window opening method may include not setting a film layer at the projection position of the distance sensor on the second optical film 23, or removing the film layer at the projection position on the second optical film by masking, covering, polishing, etc.

[0172] Exemplarily, the number of layers and / or layer thickness of the film system can be adjusted to perform bandpass processing on the infrared light wavelength emitted by the distance sensor, so that the second optical film has high transmittance to light within the infrared light wavelength range emitted by the distance sensor.

[0173] It should be noted that the number of film layers, film layer materials, film layer properties and structures of the at least two film layers stacked in the second optical film 23 are the same as the first optical film 110 disclosed in the above-mentioned embodiment of the first aspect of the present disclosure; the third film layer, the fourth film layer, the third infrared light and the fourth infrared light are respectively the same as the first film layer, the second film layer, the first infrared light and the second infrared light in the above-mentioned disclosed embodiment, and refer to the above-mentioned embodiment of the first aspect of the present disclosure, and they will not be repeated here.

[0174] When applied to electronic devices, the transparent optical film can be applied to display screens, which is helpful to expand the application scope of the optical film.

[0175] In addition to being used in electronic devices, the optical film of the embodiment of the present disclosure can also be used in at least the vehicle field or the building field. For example, the optical film can be attached to the window glass of a car or the exterior wall glass of a building.

[0176] According to some optional embodiments, the optical film includes a coating.

[0177] In the embodiment of the present disclosure, the second optical film has a higher emissivity of light in the third infrared wavelength range, which can allow the heat generated by the electronic device to pass through the atmosphere and exchange heat with outer space through radiation, thereby increasing the radiation heat exchange energy and reducing the temperature of the electronic device. By using at least two film layers with a higher reflectivity of light in the near-infrared wavelength and mid-infrared wavelength range, the input radiation of the environment can be reduced, and the increase in the heating power of the electronic device caused by environmental radiation can be reduced. In addition, the second optical film in the embodiment of the present disclosure has insulating properties, and its application in electronic devices will not affect the antenna function of the electronic device.

[0178] In some examples, the second optical film also has good transmittance in the visible light range and will not affect the normal display of the display screen, so that the optical film can also play a role in the display screen, expanding the scope of use of the optical film.

[0179] Therefore, the second optical film of the embodiment of the present disclosure can reduce thermal conductivity resistance, improve radiation cooling effect, and improve heat dissipation problem.

[0180] According to some optional embodiments, the second display module 22 may include an organic light emitting diode (OLED) display screen and a liquid crystal (LCD) display screen, wherein the LCD display screen relies on a backlight panel and emits light through an LED backlight, while the OLED display screen emits light by itself.

[0181] When the second display module 22 is an organic light emitting diode OLED module, Fig. 9 As shown, the organic light emitting diode OLED module 22a includes: a second OLED display panel 221 and a third polarizer 222; the third polarizer 222 covers the light emitting side of the second OLED display panel 221 (not shown in the figure).

[0182] According to some other optional embodiments, the second display module 22 is a liquid crystal display module 22b; Fig.10 As shown,

[0183] The liquid crystal display module 22b also includes: a second liquid crystal display panel 223, a third polarizer 222, and a fourth polarizer 224; the second liquid crystal display panel 223 is located between the third polarizer 222 and the fourth polarizer 224; the third polarizer 222 is located on the light emitting side of the second liquid crystal display panel 223 (not shown in the figure).

[0184] The liquid crystal display module 22 b further includes a second backlight module 225 ; the second backlight module 225 is located below the fourth polarizer 224 .

[0185] The display module, cover assembly and electronic device provided by the present disclosure are further described below through specific embodiments.

[0186] The embodiment of the present disclosure provides a display module, a cover plate assembly and an electronic device. Here, the display module or the cover plate assembly is applied to an electronic device, and the electronic device includes: a cover plate assembly and a second display module; or the electronic device includes: a transparent cover plate and a display module;

[0187] The present disclosure adopts a multi-layer coating technology to construct a film system with specific optical properties, and the film system is coated on the lower surface of a transparent cover plate or the upper surface of a first polarizer. By stacking multiple insulating high-refractive-index film layers of different thicknesses, such as TiOx (X is a positive integer) and low-refractive-index film layers, such as SiOx (X is a positive integer), the optical properties of the screen are regulated without affecting the display touch of the screen, so that the optical film has a high transmittance in the visible light range, a high reflectivity in the non-visible light range such as mid-infrared and far-infrared wavelengths, and a high emissivity in the first infrared wavelength range generated by the display module itself, thereby improving the radiation heat exchange capacity of electronic equipment and effectively strengthening the radiation heat exchange between electronic equipment and space in outdoor environments.

[0188] Specifically, when the display panel is an organic light emitting diode (OLED) display panel;

[0189] Solution 1.1: The electronic device comprises: a transparent cover plate 21, a first optical film 110, a first polarizer 120, and a first OLED display panel 131;

[0190] refer to Figure 4 , Figure 6 and Fig.11 The first optical film 110 can be set on the first polarizer 120, the transparent cover plate 21 is located above the first optical film 110, and the first polarizer 120 covers the light-emitting side of the first OLED display panel 131 (not shown in the figure).

[0191] Specifically, the first optical film 110 includes at least two alternately stacked film layers, where the first film layer and the second film layer are both transparent insulating inorganic oxide layers, and the first film layer and the second film layer have different refractive indices; the refractive index of the first film layer is higher than that of the second film layer, and may not be higher than that of the second film layer.

[0192] In this embodiment, the use of a transparent oxide layer can ensure that the optical film is nearly colorless at different viewing angles, thereby not affecting the appearance color of the display screen when it is turned off.

[0193] In this embodiment, by adjusting the layer thickness of each film layer and / or the number of film layers, the layer thickness includes the layer thickness of the first film layer and / or the layer thickness of the second film layer; in this way, at least the optical film can achieve high transmittance to visible light and high reflectivity to invisible light such as infrared and / or ultraviolet rays, and at the same time, it also emits the first infrared light radiated by the display screen.

[0194] Here, the wavelength range of the first infrared light may be 5 μm-15 μm. Preferably, in this embodiment, the wavelength range of the first infrared light is 8 μm to 13 μm.

[0195] When the refractive index of the first film layer is higher than that of the second film layer, the first film layer may be at least one of the following: TiO2 layer, Ti2O3 layer, Ti3O5 layer, Ta2O5 layer, HfO2 layer, ZrO2 layer, Nb2O5 layer; the second film layer may be SiO2 layer, SiO layer, Al2O3 layer, MgF2 layer, Si3N4 layer.

[0196] When there are multiple first film layers, the thicknesses of the multiple first film layers may be the same or different, and the components of the multiple first film layers may be the same or different. When there are multiple second film layers, the thicknesses of the multiple second film layers may be the same or different, and the components of the multiple second film layers may be the same or different.

[0197] The first optical film 110 is deposited on the transparent cover plate 21 by coating to form a first film layer, and then a second film layer is deposited on the first film layer, and so on. The coating method includes but is not limited to: magnetron sputtering, electron beam evaporation coating, resistive thermal evaporation coating, etc.

[0198] The composition and structure of the optical film refer to those described in the above scheme 1.1. It should be noted that, since the polarizer is made of a soft polymer material, in order to set the optical film on the polarizer, the polarizer needs to be pre-treated first, so that the polarizer is coated with a hardened layer, and then the polarizer is coated and deposited by magnetron sputtering, electron beam evaporation coating, resistive thermal evaporation coating, lamination and other coating methods to form a first film layer, and then the second film layer is deposited on the first film layer, and so on.

[0199] Solution 1.2: The electronic device comprises: a transparent cover plate, a second optical film, a third polarizer, and a second OLED display panel;

[0200] refer to Figure 6 , Figure 8 , Fig. 9 and Fig.12 The second optical film 23 can be arranged on the third surface of the transparent cover plate 21 and located between the transparent cover plate 21 and the third polarizer 222; the third polarizer 222 covers the light emitting side of the second OLED display panel 221 (not shown in the figure).

[0201] Specifically, the second optical film 23 is the same as the first optical film 110, and both include at least two film layers alternately stacked; the first optical film 110 includes a first film layer and a second film layer, and the second optical film 23 includes a third film layer and a fourth film layer; the first film layer is the same as the third film layer, and the second film layer is the same as the fourth film layer; the composition, structure and coating method of at least two film layers in the second optical film refer to the first optical film in scheme 1.1, and will not be repeated here.

[0202] Specifically, when the display panel is a liquid crystal display panel,

[0203] Solution 2.1: The electronic device comprises: a transparent cover plate 21, a first optical film 110, a first polarizer 120, a first liquid crystal display panel 132, a second polarizer 140 and a backlight module 150;

[0204] refer to Figure 5 , Figure 6 and Fig.13 The first optical film 110 can be set on the first polarizer 120, the transparent cover 21 is located above the first optical film 110, and the first liquid crystal display panel 132 is located between the first polarizer 120 and the second polarizer 140; the first polarizer 120 is located on the light output side of the first liquid crystal display panel 132 (not shown in the figure), and the backlight module 150 is located below the second polarizer 140.

[0205] The composition, structure and coating method of at least two film layers in the first optical film refer to those described in the above scheme 1.1.

[0206] Solution 2.2: The electronic device comprises: a transparent cover plate 21, a second optical film 23, a third polarizer 222, a second liquid crystal display panel 223, a fourth polarizer 224 and a second backlight module 225;

[0207] refer to Figure 6 , Figure 8, Fig.10 and Fig.14 The second optical film 23 can be arranged on the third surface of the transparent cover plate 21 and is located between the transparent cover plate 21 and the third polarizer 222. The third polarizer 222 is located on the light emitting side of the second liquid crystal display panel 223 (not shown in the figure), and the second backlight module 225 is located below the fourth polarizer 224.

[0208] The composition, structure and coating method of at least two film layers in the second optical film refer to those described in the above scheme 1.2.

[0209] In the embodiments of the present disclosure, the optical films involved in the above schemes 1.1, 1.2, 2.1 and 2.2 achieve a higher emissivity of light in the first infrared wavelength range, i.e., 8μm to 13μm, so that the heat generated by the electronic device passes through the atmosphere and performs radiation heat exchange with outer space, thereby increasing the radiation heat exchange energy and reducing the temperature of the electronic device. The higher reflectivity of at least two film layers to light in the invisible light range such as near-infrared wavelengths, mid-infrared wavelengths, and ultraviolet rays is utilized to reduce the input radiation of the environment and reduce the increase in the heating power of the electronic device caused by environmental radiation. In addition, the optical film of the embodiment of the present disclosure has insulating properties, and its application in electronic devices will not affect the antenna function of the electronic device.

[0210] The optical film uses at least two transparent oxide film layers, so that the optical film has good transmittance in the visible light range, does not affect the normal display of the display screen, and enables the heat dissipation optical film to play a role in the display screen, expanding the application range of the optical film. Therefore, the optical film of the embodiment of the present disclosure can reduce thermal resistance, improve radiation cooling effect, and improve heat dissipation problems.

[0211] It should be noted that when the display screen covered with the optical film in this embodiment is applied to electronic devices, some electronic devices have light sensors and / or distance sensors inside, which need to emit light outward to achieve some functions. In order to prevent the optical film from affecting the emitted light emitted by the sensor inside the electronic device, the projection area of ​​such sensor area on the optical film needs to be designed separately.

[0212] Specifically, according to some optional embodiments, the optical film may have a window; the window is used for the infrared light emitted by a target sensor (not shown in the figure) to pass through; here, optionally, the target sensor may include but is not limited to a light sensor, and / or a distance sensor, etc.; the distance sensor may be an infrared sensor, or an ultrasonic sensor, etc.

[0213] Exemplarily, in this embodiment, the target sensor is an infrared distance sensor. Preferably, the infrared wavelength range sent by the infrared sensor may be 940nm to 950nm.

[0214] In order to allow the distance sensor in the electronic device to normally emit infrared light outward, a window is opened at the projection position of the distance sensor on the optical film so that the infrared light emitted by the distance sensor can pass through.

[0215] The above-mentioned window opening method may include not setting a film layer at the projection position of the distance sensor on the optical film, or removing the film layer at the projection position on the optical film by masking, covering, polishing, etc.

[0216] Exemplarily, the number of layers and / or layer thickness of the film system can be adjusted to perform bandpass processing on the infrared light wavelength emitted by the distance sensor, so that the optical film has high transmittance to light within the infrared light wavelength range emitted by the distance sensor.

[0217] In this way, it is possible to avoid affecting the sensors inside the electronic device when the display screen covered with the optical film is applied to the electronic device.

[0218] Fig.15 and Fig.16 An exploded view of a display screen with an optical film attached is shown exemplarily, wherein: Fig.15 An exploded view of an organic light-emitting diode (OLED) display with an optical film attached. Fig.16 An exploded view of an LCD screen with an optical film attached.

[0219] When the optical film is applied to the organic light emitting diode (OLED) display screen, the external environment input radiation is taken as an example of sunlight input radiation: Fig.15 As shown, the radiation energy of sunlight entering the display screen is arrow A, part of which is absorbed by the organic light emitting diode OLED module 22a through the second optical film 23 (corresponding to arrow B), and the energy in the near-infrared wavelength and mid-infrared wavelength range is almost reflected by the second optical film 23 (corresponding to arrow C), reducing the impact of the radiation energy of sunlight near-infrared wavelength on the organic light emitting diode OLED display screen and electronic equipment. Since the emission efficiency of the second optical film 23 in the first infrared light wavelength range, i.e., the atmospheric window wavelength range, is relatively high, part of the heat (light in the first infrared light wavelength range) generated by the electronic equipment where the organic light emitting diode OLED display screen is located can be emitted through the second optical film 23 (corresponding to arrow E). The second optical film 23 has a relatively high transmittance in visible light, and the light emitted by the organic light emitting diode OLED display screen can pass through the optical film well (corresponding to arrow E), ensuring the display effect of the organic light emitting diode OLED display screen.

[0220] When the optical film is applied to the liquid crystal display, the external environment input radiation is taken as an example of sunlight input radiation: Fig.16 As shown, the radiation energy of sunlight entering the display screen is arrow A, part of which is absorbed by the liquid crystal display module 22b through the second optical film 23 (corresponding to arrow B), and the energy in the near-infrared wavelength and mid-infrared wavelength range is almost reflected by the second optical film 23 (corresponding to arrow C), reducing the influence of the radiation energy of sunlight near-infrared wavelength on the liquid crystal display screen and electronic equipment. Since the emission efficiency of the second optical film 23 in the first infrared light wavelength range, i.e., the atmospheric window wavelength range, is relatively high, part of the heat (light in the first infrared light wavelength range) generated by the electronic equipment where the liquid crystal display screen is located can be emitted through the second optical film 23 (corresponding to arrow E). The second optical film 23 has a relatively high transmittance in visible light, and the light emitted by the liquid crystal display screen can be well transmitted through the optical film (corresponding to arrow E), ensuring the display effect of the liquid crystal display screen.

[0221] Fig.17 8 is a block diagram of an electronic device 800 according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0222] Reference Fig.17 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0223] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0224] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0225] The power supply component 806 provides power to the various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 800.

[0226] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) or an organic light emitting diode (OLED) display and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and the rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0227] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0228] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0229] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0230] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, 4G or 5G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0231] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0232] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of an electronic device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0233] The features disclosed in several product embodiments provided in the present disclosure can be arbitrarily combined without conflict to obtain new product embodiments.

[0234] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0235] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display module, characterized in that: The display module comprises: a first polarizer, a first display panel and a first optical film; The first surface of the first polarizer is attached to the first display panel; The first optical film is disposed on the second surface of the first polarizer, the first surface and the second surface are opposite to each other; The transmittance of the first optical film to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film to non-visible light is higher than that to visible light.

2. The display module according to claim 1, characterized in that: The first display panel is a first organic light emitting diode (OLED) display panel; The first polarizer covers the light-emitting side of the first OLED display panel.

3. The display module according to claim 1, characterized in that: The first display panel is a first liquid crystal display panel; The display module further includes: a second polarizer; The first liquid crystal display panel is located between the first polarizer and the second polarizer; The first polarizer is located on the light-emitting side of the first liquid crystal display panel.

4. The display module according to any one of claims 1 to 3, characterized in that: The first optical film includes at least two film layers stacked; The at least two film layers have different refractive indices and / or reflectivity; The transmittance of the first optical film to visible light is higher than that to non-visible light, and / or the reflectance of the first optical film to non-visible light is higher than that to visible light.

5. The display module according to claim 4, characterized in that: The number of the film layers is greater than 2*N, wherein N is a positive integer greater than or equal to 1; The number of the first film layers and the number of the second film layers are both N, and the first film layers and the second film layers are alternately stacked and distributed.

6. The display module according to claim 4, characterized in that: The film layer includes: an oxide film layer made of oxide.

7. The display module according to claim 5, characterized in that: The first film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer; and / or, The second film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

8. The display module according to claim 1, characterized in that: The total thickness of the first optical film is in a range of 0.5 micrometers to 3 micrometers.

9. The display module according to claim 1, characterized in that: The reflectivity of the first optical film to ultraviolet light and / or infrared light is higher than the reflectivity to visible light; and / or, The transmittance of the first optical film to the first infrared light is higher than the transmittance of the second infrared light; wherein the first infrared light is the infrared emission light radiated by the first display panel; and the second infrared light is different from the first infrared light.

10. The display module according to claim 9, characterized in that: The wavelength of the first infrared light is in the range of 5 μm-15 μm.

11. The display module according to claim 10, characterized in that: The first optical film has a window; The window is used for infrared light emitted by the target sensor to pass through.

12. The display module according to claim 1, characterized in that: The first optical film includes a coating film.

13. A cover plate assembly, characterized in that: include: A transparent cover plate having a third surface and a fourth surface, wherein the third surface is used to be attached to the second display module; wherein the fourth surface is the opposite surface of the third surface; A second optical film is attached to the fourth surface of the transparent cover plate; wherein the transmittance of the second optical film to visible light is higher than that to non-visible light, and / or the reflectivity of the second optical film to non-visible light is higher than that to visible light.

14. The cover plate assembly according to claim 13, characterized in that: The second optical film is attached to the third surface of the transparent cover plate; The second optical film is disposed between the transparent cover plate and the second display module.

15. The cover plate assembly according to claim 13 or 14, characterized in that: The second optical film includes at least two film layers stacked; The at least two film layers have different refractive indices and / or reflectivity; The transmittance of the second optical film to visible light is higher than that to non-visible light, and / or the reflectance of the second optical film to non-visible light is higher than that to visible light.

16. The cover plate assembly according to claim 15, characterized in that: The number of the film layers is greater than 2*M, wherein M is a positive integer greater than or equal to 1; The number of the third film layer and the number of the fourth film layer are both M, and the third film layers and the fourth film layers are alternately stacked and distributed.

17. The cover plate assembly according to claim 16, characterized in that: The third film layer includes at least one of the following: a TiO2 layer, a Ti2O3 layer, a Ti3O5 layer, a Ta2O5 layer, a HfO2 layer, a ZrO2 layer, and a Nb2O5 layer; and / or, The fourth film layer includes at least one of the following: a SiO2 layer, a SiO layer, an Al2O3 layer, a MgF2 layer, and a Si3N4 layer.

18. The cover plate assembly according to claim 13 or 14, characterized in that: The reflectivity of the second optical film to ultraviolet light and / or infrared light is higher than the reflectivity to visible light; and / or, The transmittance of the second optical film to the third infrared light is higher than the transmittance of the fourth infrared light; wherein the third infrared light is the infrared emission light radiated by the second display module; and the fourth infrared light is different from the third infrared light.

19. The cover plate assembly according to claim 18, characterized in that: The wavelength of the third infrared light is in the range of 5 μm-15 μm.

20. The cover plate assembly according to claim 19, characterized in that The second optical film has a window; The window is used for infrared light emitted by the target sensor to pass through.

21. An electronic device, characterized in that: The electronic device comprises: the display module according to any one of claims 1 to 12 or the cover assembly according to any one of claims 13 to 20.

Images