Display screen module and electronic equipment

Abstract

The embodiment of the invention provides a display screen module and electronic equipment. The display screen module comprises a display screen body and a polaroid attached to the display screen body, the polaroid comprises a polarizing film, and the polarizing film comprises a base film, a plurality of polarizing units and a plurality of photosensitive units, the polarizing units and the photosensitive units are distributed in the base film in a mixed mode. The photosensitive unit is used for carrying out isomerization reaction under the action of incident light to change the arrangement mode of the polarizing unit in the base film so as to adjust the light transmittance of the polarizing film, and the light transmittance of the polarizing film is in negative correlation with the intensity of the incident light. According to the polarizing film provided by the embodiment of the invention, when the intensity of the incident light of the environment where the polarizing film is located is relatively weak, the light transmittance corresponding to the polarizing film is relatively high, and the light extraction rate of the display screen module is relatively high, so that the display effect of the display screen can be improved by increasing the driving current of the display screen, and the energy consumption of the display screen module can be reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic equipment, and particularly relates to a display screen module and electronic equipment. BACKGROUND

[0002] An OLED (Organic Light-Emitting Diode) display screen module is widely used in electronic equipment such as smart phones and tablet computers due to its advantages of self-luminous, high contrast, low power consumption and the like. However, the display screen module will have serious light reflection in a strong light environment, which reduces the display effect of the display screen module.

[0003] In the related art, a polaroid is usually added to the display screen module to block reflected light, so as to improve the display effect of the display screen module. However, since the transmittance of the polaroid is small, the driving current of the display screen module may need to be increased to improve the display effect of the display screen module, which in turn increases the power consumption of the display screen module. SUMMARY

[0004] The present application aims to provide a display screen module and electronic equipment to solve the problem that the driving current of the display screen module may need to be increased to improve the display effect of the display screen, which increases the power consumption of the display screen module.

[0005] To solve the above technical problems, the present application is implemented as follows:

[0006] In a first aspect, the present application discloses a display screen module, which comprises a display screen body and a polaroid attached to the display screen body, and the polaroid comprises a polarizing film.

[0007] The polarizing film comprises a base film, and a plurality of polarizing units and a plurality of photosensitive units are mixedly distributed inside the base film. The photosensitive units are used to undergo isomerization under the action of incident light, change the arrangement mode of the polarizing units in the base film, and adjust the transmittance of the polarizing film. The transmittance of the polarizing film is negatively correlated with the intensity of the incident light.

[0008] In a second aspect, the present application further discloses an electronic equipment, which comprises the display screen module according to any one of the above.

[0009] In the embodiment of the present application, by adding a photosensitive unit in the base film of the polarizing film, the photosensitive unit can change the arrangement of the polarizing unit in the base film through isomerization under the action of incident light, the transmittance of the polarizing film can be adjusted, and the transmittance of the polarizing film is negatively correlated with the intensity of the incident light. In this way, when the intensity of the incident light in the environment where the polarizing film is located is weak, the transmittance corresponding to the polarizing film is high, and the light output rate of the display screen module is high. The display effect of the display screen can be improved by increasing the driving current of the display screen, thereby reducing the energy consumption of the display screen module.

[0010] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0011] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0012] Figure 1 is a structural schematic diagram of a polarizing film of a display screen module provided by an embodiment of the present application;

[0013] Figure 2 is a structural schematic diagram of a polarizing film of a display screen module provided by an embodiment of the present application;

[0014] Figure 3 is a structural schematic diagram of a polarizing film of a display screen module provided by an embodiment of the present application;

[0015] Figure 4 is a structural schematic diagram of a polarizing film of a display screen module provided by an embodiment of the present application;

[0016] Figure 5 is a structural schematic diagram of a polarizing film of a display screen module provided by an embodiment of the present application;

[0017] Figure 6 is a working schematic diagram of a display screen module provided by an embodiment of the present application when the intensity of the incident light is a first intensity;

[0018] Figure 7 is a working schematic diagram of a display screen module provided by an embodiment of the present application when the intensity of the incident light is a third intensity;

[0019] Figure 8 is a working schematic diagram of a display screen module provided by an embodiment of the present application when the intensity of the incident light is a second intensity;

[0020] Reference numerals: 1 - polarizing film; 10 - base film; 11 - polarizing unit; 12 - photosensitive unit; 121 - target photosensitive unit; 2 - phase difference film; 3 - display screen body; X - first direction. DETAILED DESCRIPTION

[0021] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation only, and are not to be taken as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0022] The terms "first", "second" in the description and claims of the present application can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally means that the front and rear associated objects are in an "or" relationship.

[0023] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] OLED (Organic Light-Emitting Diode, organic light-emitting diode) display screen is a self-luminous display technology, and its working principle is to emit light by driving organic light-emitting material by current. The OLED display screen module is widely used in electronic devices such as smart phones and tablet computers due to its self-luminous, high contrast, low power consumption and other advantages. However, this kind of display screen has an inherent problem, that is, due to the whole metal cathode and metal wiring in the OLED device, serious light reflection will occur in strong light environment, which reduces the contrast of the display screen module and reduces the display effect of the display screen module. In order to solve this problem, a polarizing sheet is usually added to the display screen module to block reflected light, improve the contrast of the display screen module, and improve the display effect of the display screen module. However, when the intensity of the incident light of the environment is weak, the light transmittance of the polarizing sheet is high, the light transmittance of the display screen module is small, and the display effect of the display screen module is reduced. In order to ensure the display effect of the display screen module, the driving current needs to be increased to improve the brightness of the screen, which will cause the power consumption of the display screen module to be high and shorten the service life of the display screen module.

[0025] Based on this, the embodiment of the application provides a polarizing film 1, which can be applied to a polarizing sheet in actual application. The polarizing film 1 in the application will be described in detail below with reference to the accompanying drawings.

[0026] With reference to Figure 1 Figure 8 The embodiment of the application provides a display screen module, which comprises a display screen body 3 and a polarizing sheet attached to the display screen body 3, and the polarizing sheet comprises a polarizing film 1. The polarizing film 1 comprises a base film 10, and a plurality of polarizing units 11 and a plurality of photosensitive units 12 are mixedly distributed inside the base film 10. The photosensitive unit 12 is used to change the arrangement mode of the polarizing unit 11 in the base film 10 under the action of incident light, so as to adjust the light transmittance of the polarizing film 1. The light transmittance of the polarizing film 1 is negatively correlated with the intensity of the incident light.

[0027] Specifically, as Figure 1 Figure 8 ​​As shown, the polarizer is attached to the display screen body 3 by optical adhesive, and the display screen body 3 is similar in structure to the display screen body 3 in the prior art. Specifically, the display screen body 3 can include, but is not limited to, a substrate, a light-emitting layer, an encapsulation layer, a touch panel, and a light-blocking layer, the substrate is provided with a thin-film transistor (TFT) driving array, and the light-emitting layer is disposed on the substrate. The substrate can be a rigid substrate such as a glass substrate or a flexible substrate such as a polyimide (PI) substrate, and the substrate can provide mechanical support for the display screen module. In addition, the substrate is also provided with functional layers such as cathodes, electron transport layers, hole transport layers, and anodes to form an OLED device. The light-emitting layer can include a plurality of pixel units, each pixel unit is driven by a TFT current to emit light by the recombination of electrons and holes in organic materials, and the plurality of pixel units can include red pixel units a, green pixel units b, and blue pixel units c arranged alternately, which can be used to emit red light, green light, and blue light, respectively. The encapsulation layer is disposed on the top of the light-emitting layer and directly covers the functional layers such as cathodes, light-emitting layers, electron transport layers, hole transport layers, and anodes to form a protective barrier on the top of the OLED device. The encapsulation layer can use thin-film encapsulation technology, the main function of thin-film encapsulation is to block water vapor and oxygen from entering the OLED interior, prevent the aging of organic materials and the corrosion of electrodes, thereby prolonging the service life of the device. In addition, the thin-film encapsulation layer can provide certain mechanical protection to prevent damage to the OLED device when it is bent or subjected to external forces.

[0028] The material of the base film 10 in the polarizing film 1 can be PVA (Polyvinyl alcohol) or PC (Polycarbonate), etc. The polarizing unit 11 can be iodine molecules, dye molecules, etc. with strong dichroism.

[0029] The photosensitive unit 12 can be an isomerization functional group or molecule that can undergo isomerization under the action of incident light, wherein isomerization refers to a chemical reaction in which the internal structure of the photosensitive unit 12 can change, thereby producing a new isomer. The photosensitive unit 12 can be an isomerization functional group or molecule such as stilbene, stilbene, azobenzene, azobenzene, spirocyclic pyran, diarylethylene, captax anhydride, cyclophan, chalcone, etc., which are not specifically limited in the present application.

[0030] Exemplarily, taking the PVA film as the base film 10, the manufacturing process of the polarizing film 1 can specifically include: mixing the PVA molecules and the photosensitive units 12 to prepare the base film 10, then immersing the base film 10 in the polarizing unit 11 with strong dichroism, so that the photosensitive units 12 and the polarizing unit 11 can be mixed and distributed in the base film 10, then reducing and stabilizing in the boric acid aqueous solution or other solutions, and then uniaxially stretching the base film 10 by a certain multiple. After stretching, the polarizing unit 11 and the photosensitive unit 12 are fixed on the PVA molecules, forming the polarizing film 1 with dichroic absorption characteristics, that is, the polarizing film 1 can absorb light perpendicular to the polarization axis and allow light parallel to the polarization axis to pass through, thereby converting the incident light in the environment into linearly polarized light.

[0031] The photosensitive unit 12 can change the arrangement of the polarizing unit 11 in the base film 10 under the action of incident light, so that the transmittance of the polarizing film 1 can be adjusted, and the transmittance of the polarizing film 1 is negatively correlated with the intensity of the incident light. When the intensity of the incident light is strong, the transmittance of the incident light is smaller. At this time, the polarizing film 1 has a polarizing performance, and the reflected light can be blocked by the polarizing film 1 to improve the display effect of the display screen module. When the intensity of the incident light is weak, the transmittance of the incident light is larger. At this time, the reflected light of the environment increases, and the light output rate of the display screen body 3 is higher, so that the display screen module presents a high brightness state, and the display effect of the display screen module in a weak light state can be improved.

[0032] In the embodiment of the present application, by adding the photosensitive unit 12 in the base film 10 of the polarizing film 1, the photosensitive unit 12 can change the arrangement of the polarizing unit 11 in the base film 10 under the action of incident light, so that the transmittance of the polarizing film 1 can be adjusted, and the transmittance of the polarizing film 1 is negatively correlated with the intensity of the incident light. In this way, when the intensity of the incident light in the environment where the polarizing film 1 is located is weak, the transmittance of the polarizing film 1 corresponding to the polarizing film 1 is high, and the light output rate of the display screen module is high. The display effect of the display screen can be improved by increasing the driving current of the display screen, thereby reducing the energy consumption of the display screen module.

[0033] In some optional embodiments of the present application, the isomerization of the photosensitive unit 12 is a target photosensitive unit 121, and when the intensity of the incident light is in a first intensity range, the proportion of the target photosensitive unit 121 exceeds a first threshold value, and the polarizing unit 11 is arranged in the base film 10 along a first direction X parallel to the plane direction of the base film 10. When the intensity of the incident light is in a second intensity range, the proportion of the target photosensitive unit 121 is lower than a second threshold value, and the polarizing unit 11 is arranged in the base film 10 in a chaotic state. The value of the first intensity range is greater than the value of the second intensity range, and the first threshold value is greater than the second threshold value.

[0034] Specifically, asFigure 3 and Figure 4 As shown, the first direction X is the X-axis direction, which specifically refers to the extension direction of the plane where the base film 10 is stretched.

[0035] like Figure 3 As shown, the isomerization reaction of the photosensitive unit 12 includes a forward isomerization reaction and a reverse isomerization reaction. The forward isomerization reaction converts the photosensitive unit 12 into a forward isomer molecule. During the conversion process, the photosensitive unit 12 drives the polarizing unit 11 to move, allowing the polarizing unit 11 to be arranged and distributed along the first direction X within the base film 10. Figure 4 As shown, the reverse isomerization reaction converts the photosensitive unit 12 into a reverse isomer molecule. During the conversion process, the photosensitive unit 12 can drive the polarizing unit 11 to move in the reverse direction, so that the polarizing unit 11 can be randomly distributed inside the base film 10. Among them, the photosensitive unit 12, which is defined as a forward isomerization reaction, is the target photosensitive unit 121.

[0036] like Figure 3 As shown, when the intensity of the incident light in the environment where the polarizing film 1 is located is within the first intensity range, the intensity of the incident light is relatively high, and the proportion of the target photosensitive unit 121 exceeds the first threshold. Since the first threshold is greater than the second threshold, the target photosensitive unit 121 can drive multiple polarizing units 11 to move, so that the multiple polarizing units 11 can be arranged and distributed inside the base film 10 along the first direction X. This results in a lower light transmittance of the polarizing film 1, and the polarizing film 1 has polarizing properties. It can block reflected light and improve the display effect of the display module.

[0037] like Figure 4 As shown, when the intensity of incident light in the environment where the polarizing film 1 is located is within the second intensity range, the intensity of the incident light is relatively weak, and the proportion of the target photosensitive unit 121 is lower than the second threshold. The second threshold is lower than the first threshold. At this time, in addition to the target photosensitive unit 121, other photosensitive units 12 can drive the polarizing unit 11 to move in the opposite direction, so that multiple polarizing units 11 can be randomly distributed inside the base film 10. This results in a higher transmittance of the polarizing film 1 and a higher light output of the display module, reducing the need to increase the driving current of the display to improve the display effect, thereby reducing the energy consumption of the display module. In this way, the arrangement of the polarizing unit 11 within the base film 10 can be changed, the transmittance of the polarizing film 1 can be adjusted, and the transmittance of the polarizing film 1 can be intelligently converted under different incident light intensities. This effectively enables the display module to intelligently adjust the display effect according to environmental changes, reducing the need to increase the driving current of the display to improve the display effect and effectively reducing the energy consumption of the display module.

[0038] Optionally, the first threshold is 80%, and the second threshold is 20%. Specifically, when the first threshold is 80%, more than 80% of the target photosensitive units 121 can drive more than 80% of the polarizing units 11 to move, so that more than 80% of the polarizing units 11 can be arranged and distributed along the first direction X inside the base film 10, so that the transmittance of the polarizing film 1 can be relatively small, thereby achieving the polarization performance of the polarizing film 1.

[0039] When the second threshold is 20%, more than 80% of the other photosensitive units 12, excluding the target photosensitive unit 121, can drive more than 80% of the polarizing units 11 to move in the opposite direction. This allows more than 80% of the polarizing units 11 to be randomly distributed inside the base film 10, resulting in higher transmittance of the polarizing film 1 and higher light output of the display module. This reduces the need to increase the driving current of the display to improve the display effect, thereby reducing the energy consumption of the display module.

[0040] In some optional embodiments of this application, when the intensity of the incident light is in a third intensity range, the proportion of the target photosensitive unit 121 is between a first threshold and a second threshold; wherein, some polarizing units 11 are arranged randomly in the base film 10, and other polarizing units 11 are arranged along the first direction X in the base film 10, wherein the value of the third intensity range is between the value of the first intensity range and the value of the second intensity range.

[0041] Specifically, when the intensity of the incident light in the environment where the polarizing film 1 is located is in the third intensity range, the intensity of the incident light is moderate, and the proportion of the target photosensitive unit 121 is between the first threshold and the second threshold. This allows some polarizing units 11 to be arranged randomly in the base film 10, while other polarizing units 11 can be arranged along the first direction X in the base film 10. This results in the transmittance of the polarizing film 1 being between the transmittance of the polarizing film 1 when the intensity of the incident light is in the first intensity range and the transmittance of the polarizing film 1 when the intensity of the incident light is in the second intensity range.

[0042] In practical applications, by ensuring that the proportion of the target photosensitive unit 121 is between the first and second thresholds when the intensity of the incident light is within the third intensity range, the arrangement of the polarizing unit 11 within the base film 10 can be changed, thereby adjusting the transmittance of the polarizing film 1. This allows for intelligent conversion of the transmittance of the polarizing film 1 under moderate intensity incident light, effectively enabling the display module to intelligently adjust the display effect according to environmental changes. This reduces the need to increase the driving current of the display screen to improve the display effect and effectively reduces the energy consumption of the display module.

[0043] In some optional embodiments, when the intensity of the incident light is in a first intensity range, the light transmittance of the polarized film 1 is 40%-46%; when the intensity of the incident light is in a second intensity range, the light transmittance of the polarized film 1 is 55%-80%, and the value of the first intensity range is greater than the value of the second intensity range.

[0044] Specifically, the light-sensitive unit 12 changes the arrangement of the polarizing unit 11 in the base film 10 under the action of the incident light, so that the polarized film 1 has different light transmittances under different intensities of incident light.

[0045] When the intensity of the incident light in the environment where the polarized film 1 is located is in the first intensity range, at this time, the intensity of the incident light is high, the light-sensitive unit 12 produces isomerization reaction, changes the arrangement of the polarizing unit 11 in the base film 10, so that the light transmittance of the polarized film 1 is 40%-46%, at this time, the polarized film 1 has a smaller light transmittance, the polarized film 1 has a polarizing performance, and the reflected light can be blocked by the polarized film 1, thereby improving the display effect of the display screen module.

[0046] When the intensity of the incident light in the environment where the polarized film 1 is located is in the second intensity range, at this time, the intensity of the incident light is weak, the light-sensitive unit 12 produces isomerization reaction, changes the arrangement of the polarizing unit 11 in the base film 10, so that the light transmittance of the polarized film 1 is 55%-80%, at this time, the light transmittance corresponding to the polarized film 1 is higher, and the light output rate of the display screen module is higher, thereby reducing the display effect of the display screen by increasing the driving current of the display screen, and further reducing the energy consumption of the display screen module.

[0047] It should be noted that the number of light-sensitive units 12 in the polarized film 1 corresponds to the light transmittance of the polarized film 1, and the number of light-sensitive units 12 in the polarized film 1 can be adjusted to make the polarized film 1 have different light transmittances.

[0048] It should be noted that the value of the first intensity range and the value of the second intensity range are associated with the content of the light-sensitive unit 12 in the polarized film 1, and can be specifically set according to actual conditions, which is not limited in the embodiments of the present application.

[0049] In the embodiment, when the intensity of the incident light of the polarized film 1 is strong, the light transmittance is low, and the reflected light can be blocked by the polarized film 1; when the intensity of the incident light of the polarized film 1 is weak, the light transmittance is high, and the light output rate of the display screen module is high, thereby realizing intelligent conversion of the light transmittance of the polarized film 1 under different intensities of incident light, effectively realizing intelligent regulation and control of the display effect of the display screen module according to the change of the environment, reducing the display effect of the display screen by increasing the driving current of the display screen, and effectively reducing the energy consumption of the display screen module.

[0050] In some optional embodiments of the present application, when the intensity of the incident light is in a third intensity range, the light transmittance of the polarizing film 1 is 46% to 55%, and the value of the third intensity range is between the value of the first intensity range and the value of the second intensity range.

[0051] Specifically, when the intensity of the incident light in the environment where the polarizing film 1 is located is in the third intensity range, at this time, since the value of the third intensity range is between the value of the first intensity range and the value of the second intensity range, the intensity of the incident light is moderate, the photoactive unit 12 produces isomerization reaction, changes the arrangement of the polarizing unit 11 in the base film 10, so that the light transmittance of the polarizing film 1 is 46% to 55%, at this time, the polarizing film 1 has a moderate light transmittance, which is greater than the light transmittance of the polarizing film 1 when the intensity of the incident light is in the first intensity range, but less than the light transmittance of the polarizing film 1 when the intensity of the incident light is in the second intensity range, so that the polarizing film 1 has partial polarizing performance, and the transmittance is improved compared with the polarizing performance.

[0052] In actual application, by setting the light transmittance of the polarizing film 1 to be moderate when the intensity of the incident light is moderate, the polarizing film 1 has partial polarizing performance, and the reflected light can be blocked by the polarizing film 1, thereby improving the display effect of the display screen module, and the transmittance is improved compared with the conventional polarizing performance, so that the light transmittance of the display screen module can be improved, and the display effect of the display screen can be improved by increasing the driving current of the display screen, thereby effectively reducing the energy consumption of the display screen module.

[0053] It should be noted that the value of the third intensity range is also associated with the content of the photoactive unit 12 in the polarizing film 1, which can be set according to actual conditions, and the present application does not make specific limitation.

[0054] Optionally, the photoactive unit 12 is one or more components.

[0055] Specifically, the photoactive unit 12 can be one or more of stilbene, stilbene, azobenzene, azobenzene, spiro-benzopyran, diarylethylene, fulgimide, ring aromatic, chalcone and other isomerization functional groups or molecules.

[0056] For example, as shown in Figure 5 , the photoactive unit 12 is stilbene. Figure 5The four functional groups capable of isomerization under the action of different incident light are shown in the figure, wherein, ① and ② belong to unsaturated molecules, the two unsaturated molecules can be reversibly combined into a cyclic compound under the irradiation of short-wave ultraviolet light or long-wave ultraviolet light; ③ is the cis-trans isomerization of azobenzene compounds, the azobenzene compounds can be converted between cis and trans isomers under the irradiation of ultraviolet light or blue light; ④ is the reversible structural isomerization of spiropyran structure under the irradiation of ultraviolet light or visible light, the spiropyran molecule can undergo ring-opening reaction under the irradiation of ultraviolet light, and can recover to the ring state under the condition of visible light only.

[0057] In the embodiment, the component of the photosensitive unit 12 is one or more, which can make the polarizing film 1 flexibly adapt to different application scenarios and improve the flexibility of the design of the polarizing film 1.

[0058] Optionally, the polarizing unit 11 is any one of iodine molecules, dye molecules and liquid crystal molecules. In actual application, by using any one of iodine molecules, dye molecules and liquid crystal molecules as the polarizing unit 11, since the iodine molecules, the dye molecules and the liquid crystal molecules can all make the polarizing film 1 have the polarization property, the flexibility of the design of the polarizing film 1 can be further improved.

[0059] Optionally, the polarizing sheet further comprises a phase difference film 2, the polarizing film 1 is attached to the phase difference film 2, and the phase difference film 2 is attached to the display screen body 3.

[0060] Specifically, as shown in the figure, Figure 6 - Figure 7 The polarizing film 1 and the phase difference film 2 can be adhered together by optical glue, and the phase difference film 2 is adhered to the display screen body 3 by optical glue, wherein the phase difference film 2, also called wave plate, is an optical film capable of changing the phase of incident polarized light. The phase difference film 2 has birefringence characteristics, and can make the phases of O light and E light of the outgoing light deviate by 1 / 2 wavelength, so that the phase of the outgoing light deviates by 90° compared with the incident light. When the phase difference film 2 is a λ / 2 phase difference film, the phase difference value is a multiple of λ / 2, and the outgoing light is still linearly polarized light, but the polarization direction is perpendicular to that of the incident light; when the phase difference film 2 is a λ / 4 phase difference film, the phase difference value is a multiple of λ / 4, and the outgoing light becomes circularly polarized light; if the phase difference value is other values, the outgoing light forms elliptically polarized light. In the embodiment, the phase difference film 2 is a λ / 4 phase difference film.

[0061] It should be noted that the transparency, refractive index, dispersion, birefringence and other characteristics of the phase difference film 2 depend on the basic characteristics of the material, and the phase difference film 2 can be obtained by orienting a PC polymer or a PVC (Polyvinylchloride) polymer into a film, and then drying and heat stretching the film. By performing one-axis stretching, the molecules in the film are oriented, and the birefringence effect is exhibited.

[0062] The following will be described with reference to the accompanying drawings Figure 6 - Figure 8 The working schematic diagram of the display screen module under different intensities of incident light is described in detail.

[0063] Referring to Figure 6 , Figure 6 The working schematic diagram of the display screen module under the intensity of incident light being the first intensity is shown; the incident light of the environment of the display screen module is the first intensity, that is, under the irradiation of high-intensity incident light, since the isomerization reactions of the plurality of photosensitive units 12 in the polarizing film 1 of the polarizer are all positive isomerization reactions, the polarizing film 1 is in a polarized state, the polarizing film 1 has a polarizing property, the strong incident light becomes horizontal polarized light after passing through the polarizing film 1, and then becomes left circular polarized light after passing through the phase difference film 2, and is reflected by the OLED cathode of the display screen module as right circular polarized light, and then becomes vertical polarized light after passing through the phase difference film 2 again, and the vertical polarized light cannot pass through the polarizing film 1, so that the ambient light cannot be reflected on the surface of the display screen module. Since the polarizing film 1 and the phase difference film 2 are both in a polarized state, the transmittance of the polarizing film 1 can be 40%-46%, and the light output rate of the OLED device is reduced.

[0064] Figure 7 The working schematic diagram of the display screen module under the intensity of incident light being the third intensity is provided by the present application; the incident light of the environment of the display screen module is the third intensity, that is, under the condition of medium-intensity ambient light, since the isomerization reactions of part of the plurality of photosensitive units 12 in the polarizing film 1 of the polarizer are all positive isomerization reactions, and the isomerization reactions of the other part of the plurality of photosensitive units 12 are all reverse isomerization reactions, the polarizing film 1 has partial polarizing properties, and the transmittance is improved compared with the case where the polarizing film 1 is in a polarized state; the medium-intensity ambient light becomes horizontal polarized light plus part of the ambient light after passing through the polarizing film 1, and then becomes left circular polarized light plus part of the ambient light after passing through the phase difference film 2, and is reflected by the OLED cathode as right circular polarized light plus part of the ambient light, and then becomes vertical polarized light plus part of the ambient light after passing through the phase difference film 2 again, and the polarizing film 1 has partial polarizing properties, and the vertical polarized light plus part of the ambient light locally forms extremely weak reflected light. Since the polarizing property of the polarizing film 1 is weakened, the transmittance is also improved accordingly, and the transmittance of the polarizing film 1 can be 46%-55%, that is, the light output rate of the OLED device is also improved.

[0065] Figure 8 is a working schematic diagram of the display screen module provided in the embodiment of the present application when the intensity of incident light is the second intensity. When the intensity of incident light in the environment is the second intensity, that is, in the case of weak ambient light, since the isomerization reactions of the photosensitive units 12 in the polarizing film 1 of the polarizer are all reverse isomerization reactions, the polarizing film 1 is in a transparent state and does not have a polarizing property. The weak ambient light will not be polarized and the light intensity will not be weakened when passing through the polarizing film 1 without a polarizing property. The ambient light state is still maintained after passing through the phase difference film 2. After being reflected by the OLED cathode, the ambient light state is sequentially transmitted through the phase difference film 2 and the polarizing film 1 without a polarizing property, and finally a high reflection of ambient light is presented on the OLED display screen. However, since the polarizing film 1 does not have a polarizing property, the transmittance is as high as 55%-80%, and the light emitted by the OLED device can also be highly penetrated to present a high brightness state. That is, under weak ambient light, even if the reflectivity of the display screen module is high, the brightness of the OLED is also high, so that the contrast ratio and display effect of the display screen module are not affected.

[0066] In summary, the display screen module provided in the embodiment of the present application can at least have the following advantages:

[0067] In the embodiment of the present application, the photosensitive units 12 are added in the base film 10 of the polarizing film 1. The photosensitive units 12 can change the arrangement of the polarizing units 11 in the base film 10 under the action of incident light to adjust the transmittance of the polarizing film 1. The transmittance of the polarizing film 1 is negatively correlated with the intensity of incident light. In this way, when the intensity of incident light in the environment where the polarizing film 1 is located is weak, the corresponding transmittance of the polarizing film 1 is high, and the light output rate of the display screen module is high. The display effect of the display screen can be improved by increasing the driving current of the display screen, and the energy consumption of the display screen module can be reduced.

[0068] The embodiment of the present application also provides an electronic device, which comprises the display screen module according to any one of the above-mentioned embodiments.

[0069] It should be noted that in the embodiment of the present application, the structure of the display screen module is the same as that of the display screen module described in the above-mentioned embodiments, and the beneficial effects are similar. Therefore, no further description is given here.

[0070] In the description of the application, reference has been made to descriptive terms such as "one embodiment", "some embodiments", "an embodiment", "example", "specific example" or "some examples" etc. Such terminology means that a particular feature, structure, material or characteristic being described is included in at least one embodiment or example of the application. The illustrative appearances of such terminology in various places in the specification does not necessarily refer to the same embodiment or example. Moreover, it is appreciated that the specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0071] Although embodiments of this application have been shown and described, it is to be understood that various modifications, substitutions, combinations, and variations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A display screen module, characterized by The display screen module comprises a display screen body (3) and a polaroid attached to the display screen body (3), wherein the polaroid comprises a polarizing film (1). The polarizing film (1) comprises a base film (10), and a plurality of polarizing units (11) and a plurality of photosensitive units (12) mixedly distributed inside the base film (10), the photosensitive units (12) are used to change the arrangement of the polarizing units (11) in the base film (10) under the action of incident light, so as to adjust the light transmittance of the polarizing film (1), wherein the light transmittance of the polarizing film (1) is negatively correlated with the intensity of the incident light.

2. The display module of claim 1, wherein, The isomerization reaction in the photosensitive unit (12) is a target photosensitive unit (121) of a positive isomerization reaction. When the intensity of the incident light is in a first intensity range, the proportion of the target photosensitive unit (121) exceeds a first threshold value, and the polarizing units (11) are arranged in the base film (10) along a first direction (X) which is parallel to the plane direction of the base film (10). When the intensity of the incident light is in a second intensity range, the proportion of the target photosensitive unit (121) is lower than a second threshold value, and the polarizing units (11) are arranged in the base film (10) in a chaotic state. The first intensity range is greater than the second intensity range, and the first threshold value is greater than the second threshold value.

3. The display module of claim 2, wherein, The first threshold value is 80%, and the second threshold value is 20%.

4. The display module of claim 2, wherein, When the intensity of the incident light is in a third intensity range, the proportion of the target photosensitive unit (121) is between the first threshold value and the second threshold value, part of the polarizing units (11) are arranged in the base film (10) along the first direction (X), and the other part of the polarizing units (11) are arranged in the base film (10) in a chaotic state. The third intensity range is between the first intensity range and the second intensity range.

5. The display module of claim 1, wherein, When the intensity of the incident light is in the first intensity range, the light transmittance of the polarizing film (1) is 40%-46%; When the intensity of the incident light is in the second intensity range, the light transmittance of the polarizing film (1) is 55%-80%, and the first intensity range is greater than the second intensity range.

6. The display module of claim 5, wherein, When the intensity of the incident light is in the third intensity range, the light transmittance of the polarizing film (1) is 46%-55%, and the third intensity range is between the first intensity range and the second intensity range.

7. The display module of any of claims 1-6, wherein the display module is configured to be mounted to a housing of a mobile device. The photosensitive unit (12) comprises one or more components.

8. The display module of any of claims 1-6, wherein, The polarizing unit (11) comprises any one of iodine molecules, dye molecules and liquid crystal molecules.

9. The display module of any of claims 1-6, wherein, The polaroid further comprises a phase difference film (2); The polarizing film (1) is attached to the phase difference film (2), and the phase difference film (2) is attached to the display screen body (3).

10. An electronic device, comprising: The electronic device comprises the display screen module according to any one of claims 1-8.

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