Display screen, preparation method of display screen and display device

Abstract

The invention discloses a display screen, a preparation method of the display screen and a display device.The display screen comprises a transparent display module and a photosensitive film, the transparent display module comprises a light-emitting unit, the photosensitive film is arranged on the backlight side of the transparent display module, the photosensitive film is configured to change color under irradiation of the light-emitting unit, and in addition, the photosensitive film is arranged on the backlight side of the transparent display module. The light transmittance of the photosensitive film is reduced along with the increase of the brightness of the light-emitting unit, so that when the light-emitting unit emits light to enable the transparent display module to display an image, the area, corresponding to the image displayed by the transparent display module, on the photosensitive film changes color under the irradiation of light emitted by the light-emitting unit, and the transmittance of the area is reduced; and chromatic aberration is generated between the transparent display module and other areas of the photosensitive film, equivalently, a semitransparent or non-transparent background plate is formed on the back surface of an image displayed by the transparent display module, so that the contrast ratio between the area for displaying the image in the transparent display module and other areas can be improved, and the display effect of the display screen is improved.

Description

Technical Field

[0001] The present application belongs to the field of display technology, and in particular relates to a display screen, a method for preparing a display screen, and a display device. Background Art

[0002] Organic Light Emitting Display (OLED) and flat-panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] However, the performance of current OLED display products needs to be improved. Summary of the invention

[0004] The purpose of the present application is to provide a display screen, a method for preparing the display screen, and a display device, which can improve the performance of the display screen.

[0005] In a first aspect, the present application provides a display screen, comprising a transparent display module and a photosensitive film, wherein the transparent display module comprises a light-emitting unit, and the photosensitive film is arranged on the backlight side of the transparent display module, and the photosensitive film is configured to change color under the illumination of the light-emitting unit, and the transmittance of the photosensitive film decreases as the brightness of the light-emitting unit increases.

[0006] In some embodiments, the display screen further includes a first anti-ultraviolet film, and the first anti-ultraviolet film is disposed on a side of the photosensitive film away from the transparent display module.

[0007] In some embodiments, the display screen further comprises a support plate, the support plate is connected to the transparent display module, the photosensitive film and the first anti-ultraviolet film are respectively arranged on opposite sides of the support plate, and the photosensitive film is located between the support plate and the transparent display module;

[0008] Preferably, the material of the support plate includes light-transmitting material.

[0009] In some embodiments, the support plate is disposed on the backlight side of the transparent display module;

[0010] Preferably, the display screen further comprises a light-transmitting adhesive layer, and the support plate is bonded to the transparent display module via the light-transmitting adhesive layer;

[0011] Preferably, the light-transmitting adhesive layer is located between the photosensitive film and the transparent display module, and the light-transmitting adhesive layer is provided as a whole layer.

[0012] In some embodiments, the display screen further includes a second anti-ultraviolet film, and the second anti-ultraviolet film is disposed on the light-emitting side of the transparent display module.

[0013] In some embodiments, the material of the photosensitive film includes photosensitive ink;

[0014] Preferably, the material of the photosensitive film is formed by mixing photosensitive inks of multiple colors;

[0015] Preferably, the material of the photosensitive film includes red photosensitive ink, blue photosensitive ink, yellow photosensitive ink and purple photosensitive ink.

[0016] A second aspect of the present application provides a method for preparing a display screen, the method comprising:

[0017] forming a transparent display module, wherein the transparent display module comprises a light-emitting unit;

[0018] A photosensitive film is formed on the backlight side of the transparent display module. The photosensitive film is configured to change color under the illumination of the light-emitting unit, and the light transmittance of the photosensitive film decreases as the brightness of the light-emitting unit increases.

[0019] In some embodiments, the step of forming a photosensitive film on the backlight side of the transparent display module includes:

[0020] forming a photosensitive film on one side of the support plate;

[0021] Transferring the support plate and the photosensitive film to the backlight side of the transparent display module;

[0022] Preferably, before the step of transferring the support plate and the photosensitive film to the backlight side of the transparent display module, the method further includes:

[0023] forming a light-transmitting adhesive layer on the side of the photosensitive film facing away from the supporting plate;

[0024] The step of transferring the support plate and the photosensitive film to the backlight side of the transparent display module also includes: laminating the support plate to the transparent display module through a light-transmitting adhesive layer;

[0025] Preferably, the step of forming a photosensitive film on one side of the support plate includes:

[0026] A photosensitive film is formed on one side of the support plate through a coating process.

[0027] In some embodiments, the preparation method further comprises:

[0028] A first anti-ultraviolet film is formed on a side of the support plate away from the photosensitive film.

[0029] In some embodiments, after the step of forming the transparent display module, the method further includes:

[0030] A second anti-ultraviolet film is formed on the light-emitting side of the transparent display module.

[0031] In a third aspect, an embodiment of the present application provides a display device, comprising any of the above display screens or a display screen prepared by any of the above preparation methods.

[0032] The embodiments of the present application provide a display screen, a method for preparing the display screen, and a display device. The display screen includes a transparent display module and a photosensitive film. The transparent display module includes a light-emitting unit. The photosensitive film is arranged on the backlight side of the transparent display module. The photosensitive film is configured to change color under the irradiation of the light-emitting unit, and the transmittance of the photosensitive film decreases as the brightness of the light-emitting unit increases. Therefore, when the light-emitting unit emits light to make the transparent display module display an image, under the irradiation of the light emitted by the light-emitting unit, the area on the photosensitive film corresponding to the image displayed by the transparent display module changes color, the transmittance of the area decreases, and a color difference is generated between the area and other areas of the photosensitive film, which is equivalent to forming a semi-transparent or opaque background board on the back of the image displayed by the transparent display module, thereby improving the contrast between the area displaying the image and other areas in the transparent display module, so as to improve the color rendering effect of the displayed image, thereby improving the display effect of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 An exploded view of a display screen provided for some embodiments of the present application;

[0035] Figure 2 Another exploded view of a display screen provided in some embodiments of the present application;

[0036] Figure 3 Another exploded view of a display screen provided in some embodiments of the present application;

[0037] Figure 4 A flow chart of a method for preparing a display screen provided in some embodiments of the present application;

[0038] Figure 5 Another flow chart of a method for preparing a display screen provided in some other embodiments of the present application.

[0039] The figures are as follows:

[0040] Display screen 100 ; transparent display module 10 ; backlight side P1 ; light emitting side P2 ; photosensitive film 20 ; first anti-ultraviolet film 30 ; support plate 40 ; second anti-ultraviolet film 50 . DETAILED DESCRIPTION

[0041] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0042] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0043] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] In some display screens, by setting the materials of the substrate and electrodes in the display panel as transparent materials, a transparent display screen can be formed to improve the display effect and application scope. When the transparent display screen is turned off, it is similar to light-transmitting glass, and the light transmittance of different areas is roughly the same, so that the transparent display screen is as uniform as possible. When the transparent display screen lights up the screen, part of the upper area can be non-transparent to display the corresponding image. However, when the current transparent display screen lights up the screen, the contrast between the area where the image is displayed and the area where the image is not displayed is small, resulting in poor color rendering of the displayed image, affecting the display effect.

[0046] See also Figure 1 In a first aspect, the present application provides a display screen 100, comprising a transparent display module 10 and a photosensitive film 20. The transparent display module 10 comprises a light-emitting unit. The photosensitive film 20 is arranged on the backlight side P1 of the transparent display module 10. The photosensitive film 20 is configured to change color under the illumination of the light-emitting unit. The transmittance of the photosensitive film 20 decreases as the brightness of the light-emitting unit increases.

[0047] The transparent display module 10 may include a substrate and a light-emitting unit disposed on the substrate. The substrate may be a transparent substrate supported by transparent materials such as glass and organic glass. The light-emitting unit has an electrode material, which may be a light-transmitting material such as indium tin oxide, to form a transparent display panel. In addition, in the transparent display module 10, a supporting substrate may be disposed on the side of the substrate away from the light-emitting unit to play a supporting and buffering role. The side of the supporting substrate away from the substrate may form the backlight side P1 of the transparent display module 10, that is, the photosensitive film 20 may be disposed on the side of the supporting substrate away from the substrate. It should be noted that the transparent display module 10 described in the embodiment of the present application refers to a display module with a high light transmittance that can be approximately transparent or translucent. The "transparent" here does not specifically refer to completely transparent. It may be not completely transparent, as long as it can be light-transmitting.

[0048] It is understandable that the photosensitive film 20 may include a photosensitive area and a non-photosensitive area. The photosensitive area is an area on the photosensitive film 20 corresponding to the image displayed by the transparent display module 10, that is, an area that can be irradiated by the light emitted by the light-emitting unit, and the non-photosensitive area is an area on the photosensitive film 20 that does not correspond to the image, that is, an area that cannot be irradiated by the light emitted by the light-emitting unit. When the transparent display module 10 displays the corresponding image, the light-emitting unit in the area where the image is displayed in the transparent display module 10 emits light, while the light-emitting units in other areas where the image is not displayed do not emit light. Therefore, the photosensitive area of ​​the photosensitive film 20 can be irradiated by the light emitted by the corresponding light-emitting unit and change color, while the non-photosensitive area will not change color because it is not irradiated by the light emitted by the transparent display module 10. In other words, the shape and position of the photosensitive area in the embodiment of the present application correspond to the shape and position of the image displayed by the transparent display module 10. It should be noted that in the embodiment of the present application, the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20 are dynamic areas rather than fixed areas. When the transparent display module 10 displays different images, the shapes and positions of the photosensitive area and the non-photosensitive area are different.

[0049] In the display screen 100 provided in the embodiment of the present application, a photosensitive film 20 is provided on the backlight side P1 of the transparent display module 10, and the photosensitive film 20 is configured to change color under the irradiation of the light-emitting unit, and the transmittance of the photosensitive film 20 decreases as the brightness of the light-emitting unit increases. Therefore, when the light-emitting unit of the transparent display module 10 emits light so that the transparent display module 10 displays an image, the photosensitive area of ​​the photosensitive film 20 changes color under the irradiation of the light emitted by the light-emitting unit, and the transmittance of the area decreases, and a color difference is generated between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, which is equivalent to providing a semi-transparent or opaque background board on the back of the image displayed by the transparent display module 10, thereby improving the contrast between the area where the image is displayed and other areas in the transparent display module 10, so as to enhance the color rendering effect of the displayed image, thereby enhancing the display effect of the display screen 100.

[0050] It is understandable that the greater the color difference between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, the greater the contrast between the area displaying the image and other areas in the transparent display module 10, and the better the color rendering effect of the image displayed by the transparent display module 10. In addition, since the photosensitive film 20 is located on the backlight side P1 of the transparent display module 10, while improving the display effect of the transparent display module 10 through the photosensitive film 20, it is also possible to prevent the photosensitive film 20 from changing color and affecting the specific color of the image displayed by the transparent display module 10.

[0051] It should be noted that the material of the photosensitive film 20 may be photosensitive ink or other photochromic materials, which is not limited in this embodiment.

[0052] In some optional embodiments, the display screen 100 can increase the driving current of the transparent display module 10 when displaying an image, so that the light-emitting unit of the transparent display module 10 can emit stronger light to increase the color difference between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, thereby further improving the display effect.

[0053] See also Figure 2 In some embodiments, the display screen 100 further includes a first anti-ultraviolet film 30 , and the first anti-ultraviolet film 30 is disposed on a side of the photosensitive film 20 away from the transparent display module 10 .

[0054] It is understandable that the ultraviolet rays of the external environment usually irradiate the photosensitive film 20 uniformly, which causes the photosensitive film 20 to change color roughly uniformly, that is, both the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20 will be irradiated by the ultraviolet rays of the external environment and change color. Since the degree of color change of the photosensitive film 20 is limited, compared with the case where the photosensitive film 20 is only irradiated by the light emitted by the transparent display module 10, if the photosensitive area of ​​the photosensitive film 20 is first irradiated by the ultraviolet rays of the external environment and changes color, and then irradiated by the ultraviolet rays emitted by the transparent display module 10, the color of the photosensitive area may reach saturation during the process of being irradiated by the ultraviolet rays emitted by the transparent display module 10 and cannot continue to change color, that is, part of the light emitted by the transparent display module 10 cannot deepen the color of the photosensitive area of ​​the photosensitive film 20, thereby reducing the color difference between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, resulting in a reduction in the contrast between the area displaying the image and other areas in the transparent display module 10, thereby affecting the display effect of the transparent display module 10.

[0055] Therefore, in these embodiments, by providing the first anti-ultraviolet film 30 on the side of the photosensitive film 20 away from the transparent display module 10, the first anti-ultraviolet film 30 is used to prevent ultraviolet rays in the external environment from irradiating the photosensitive film 20, so that the influence of ultraviolet rays in the external environment on the photosensitive film 20 can be eliminated, so that most of the light received by the photosensitive film 20 comes from the transparent display module 10, thereby reducing the risk of the color of the photosensitive area of ​​the photosensitive film 20 reaching saturation during the process of being irradiated by the light emitted by the transparent display module 10, ensuring that there is a large color difference between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, and thus ensuring the contrast between the area displaying the image and other areas in the transparent display module 10.

[0056] In addition, by disposing the first anti-ultraviolet film 30 on the side of the photosensitive film 20 away from the transparent display module 10 , the damage of ultraviolet rays from the external environment to the photosensitive film 20 and the transparent display module 10 can be reduced, thereby increasing the service life of the photosensitive film 20 and the transparent display module 10 .

[0057] Please continue reading Figure 2 In some embodiments, the display screen 100 further includes a support plate 40, which is connected to the transparent display module 10, and the photosensitive film 20 and the first anti-ultraviolet film 30 are respectively arranged on opposite sides of the support plate 40, and the photosensitive film 20 is located between the support plate 40 and the transparent display module 10, so that the support plate 40 plays a role of mechanical support between the photosensitive film 20 and the first anti-ultraviolet film 30, thereby improving the stability and reliability of the photosensitive film 20 and the first anti-ultraviolet film 30.

[0058] It should be noted that the photosensitive film 20 is located between the support plate 40 and the transparent display module 10 , and can be closely attached to the transparent display module 10 under the action of the support plate 40 , thereby reducing light attenuation.

[0059] Preferably, the material of the support plate 40 includes a light-transmitting material to prevent the support plate 40 from affecting the performance of the display screen 100 .

[0060] In some embodiments, the support plate 40 is disposed on the backlight side P1 of the transparent display module 10 to position the support plate 40 and the photosensitive film 20 between the support plate 40 and the transparent display module 10 to improve stability and reliability.

[0061] It should be noted that, during the preparation process of the display screen 100, a photosensitive film 20 can be first formed on one side of the support plate 40, and then the support plate 40 and the photosensitive film 20 can be transferred to the backlight side P1 of the transparent display module 10, so that the support plate 40 is bonded to the transparent display module 10. Compared with directly forming the photosensitive film 20 on the backlight side P1 of the transparent display module 10, it is possible to avoid the molding process of the photosensitive film 20 affecting the performance of the transparent display module 10. At the same time, the photosensitive film 20 and the transparent display module 10 can be prepared separately, and the production efficiency can also be improved.

[0062] Preferably, the display screen 100 further includes a light-transmitting adhesive layer, and the support plate 40 is bonded to the transparent display module 10 through the light-transmitting adhesive layer to reduce assembly difficulty and improve assembly efficiency.

[0063] It should be noted that the light-transmitting adhesive layer may be an optically transparent adhesive, or may be any other light-transmitting adhesive such as a double-sided adhesive, and this embodiment does not limit this.

[0064] Preferably, the light-transmitting adhesive layer is located between the photosensitive film 20 and the transparent display module 10 , and the light-transmitting adhesive layer is provided as a whole layer, thereby increasing the bonding area of ​​the light-transmitting adhesive layer and further improving the stability of the support plate 40 and the photosensitive film 20 .

[0065] See also Figure 3 In some embodiments, the display screen 100 further includes a second anti-ultraviolet film 50, which is disposed on the light-emitting side P2 of the transparent display module 10, thereby preventing ultraviolet rays from the external environment from passing through the transparent display module 10 from the light-emitting side P2 of the transparent display module 10 and irradiating the photosensitive film 20, and also preventing ultraviolet rays from the external environment from affecting the service life of the transparent display module 10. In addition, the second anti-ultraviolet film 50 can also prevent the light emitted by the transparent display module 10 when displaying an image from entering the human eye, thereby improving the comfort of using the display screen 100.

[0066] In some embodiments, the material of the photosensitive film 20 includes photosensitive ink. The photosensitive ink can quickly change color after being irradiated by ultraviolet rays to meet the display requirements of the transparent display module 10. At the same time, compared with other photochromic materials, the cost of photosensitive ink is lower, which can reduce the production cost of the display screen 100.

[0067] Preferably, the material of the photosensitive film 20 is formed by mixing photosensitive inks of various colors, so as to reasonably adjust the color of the photosensitive film 20 after being irradiated by ultraviolet rays and changing color, so as to improve the display effect of the transparent display module 10 .

[0068] Preferably, the material of the photosensitive film 20 includes red photosensitive ink, blue photosensitive ink, yellow photosensitive ink and purple photosensitive ink. The red photosensitive ink, blue photosensitive ink, yellow photosensitive ink and purple photosensitive ink are mixed to form the material of the photosensitive film 20, so that the photosensitive ink is generally gray after being irradiated by ultraviolet rays, thereby improving the display effect of the transparent display module 10.

[0069] It should be noted that when the photosensitive film 20 is not exposed to ultraviolet rays, the photosensitive ink material formed by mixing four colors can be colorless and transparent, so that the display screen 100 is substantially transparent.

[0070] See also Figure 4 In a second aspect, the present application provides a method for preparing a display screen 100, the method comprising:

[0071] S1. Form a transparent display module 10, wherein the transparent display module 10 includes a light-emitting unit.

[0072] S2. Form a photosensitive film 20 on the backlight side P1 of the transparent display module 10. The photosensitive film 20 is configured to change color under the irradiation of the light-emitting unit, and the light transmittance of the photosensitive film 20 decreases as the brightness of the light-emitting unit increases. It should be noted that the photosensitive material can be directly coated on the backlight side P1 of the transparent display module 10, so that the photosensitive material is cured to form the photosensitive film 20, or the photosensitive film 20 can be formed first and then transferred to the backlight side P1 of the transparent display module 10, which is not limited in this embodiment.

[0073] In these embodiments, a transparent display module 10 is first formed, and then a photosensitive film 20 is formed on the backlight side P1 of the transparent display module 10. The photosensitive film 20 is configured to change color under the irradiation of the light-emitting unit, and the transmittance of the photosensitive film 20 decreases as the brightness of the light-emitting unit increases. Therefore, when the light-emitting unit of the transparent display module 10 emits light and causes the transparent display module 10 to display an image, the photosensitive area of ​​the photosensitive film 20 changes color under the irradiation of the light emitted by the light-emitting unit, and the transmittance of the area decreases, and a color difference is generated between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, which is equivalent to setting a semi-transparent or opaque background board on the back of the image displayed by the transparent display module 10, thereby improving the contrast between the area where the image is displayed and other areas in the transparent display module 10, so as to enhance the color rendering effect of the displayed image, thereby improving the display effect of the display screen 100.

[0074] See also Figure 5 In some embodiments, the step of forming the photosensitive film 20 on the backlight side P1 of the transparent display module 10 includes:

[0075] S21, forming a photosensitive film 20 on one side of the support plate 40. The photosensitive film 20 can be formed on one side of the support plate 40 by a coating process, or by other processes such as inkjet printing, which is not limited in this embodiment.

[0076] S22 , transferring the support plate 40 and the photosensitive film 20 to the backlight side P1 of the transparent display module 10 .

[0077] In these embodiments, the photosensitive film 20 is first formed on one side of the support plate 40, and then the support plate 40 and the photosensitive film 20 are transferred to the backlight side P1 of the transparent display module 10. That is, the transparent display module 10 and the photosensitive film 20 can be prepared separately and then assembled. Compared with directly forming the photosensitive film 20 on the backlight side P1 of the transparent display module 10, on the one hand, it can avoid the molding process of the photosensitive film 20 affecting the performance of the transparent display module 10, and on the other hand, it can also improve the production efficiency of the display screen 100.

[0078] Preferably, before the step of transferring the support plate 40 and the photosensitive film 20 to the backlight side P1 of the transparent display module 10, the method further includes:

[0079] A light-transmitting adhesive layer is formed on a side of the photosensitive film 20 facing away from the support plate 40 .

[0080] The step of transferring the support plate 40 and the photosensitive film 20 to the backlight side P1 of the transparent display module 10 further includes: the support plate 40 is attached to the transparent display module 10 via a light-transmitting adhesive layer.

[0081] In these embodiments, by forming a transparent adhesive layer on the side of the photosensitive film 20 away from the support plate 40 and bonding the support plate 40 and the transparent display module 10 through the transparent adhesive layer, the process difficulty can be reduced and the assembly efficiency of the support plate 40 and the transparent display module 10 can be improved.

[0082] Preferably, the step of forming the photosensitive film 20 on one side of the support plate 40 includes:

[0083] The photosensitive film 20 is formed on one side of the support plate 40 through a coating process.

[0084] Specifically, multi-color photosensitive inks may be mixed in advance to form a solution, and then the solution may be coated on one side of the support plate 40 . After the solution is solidified, the photosensitive ink may be obtained, which reduces the difficulty of the process and helps to improve production efficiency.

[0085] In some embodiments, the preparation method further comprises:

[0086] The first anti-ultraviolet film 30 is formed on the side of the support plate 40 away from the photosensitive film 20. The first anti-ultraviolet film 30 can be directly attached to one side of the support plate 40. It is understandable that the step of forming the first anti-ultraviolet film 30 on the side of the support plate 40 away from the photosensitive film 20 can be performed before or after the support plate 40 and the transparent display module 10 are assembled, and this embodiment is not limited to this.

[0087] In these embodiments, by disposing a first anti-ultraviolet film 30 on the side of the support plate 40 away from the photosensitive film 20, and utilizing the first anti-ultraviolet film 30 to prevent ultraviolet rays in the external environment from irradiating the photosensitive film 20, the influence of ultraviolet rays in the external environment on the photosensitive film 20 can be eliminated, so that most of the light received by the photosensitive film 20 comes from the transparent display module 10, thereby reducing the risk of the color of the photosensitive area of ​​the photosensitive film 20 reaching saturation during the process of being irradiated by the light emitted by the transparent display module 10, ensuring that there is a large color difference between the photosensitive area and the non-photosensitive area of ​​the photosensitive film 20, thereby ensuring the contrast between the area displaying the image and other areas in the transparent display module 10.

[0088] In some embodiments, after the step of forming the transparent display module 10, the method further includes:

[0089] The second anti-ultraviolet film 50 is formed on the light-exiting side P2 of the transparent display module 10. It should be noted that the step of forming the second anti-ultraviolet film 50 on the light-exiting side P2 of the transparent display module 10 is performed before or after the photosensitive film 20 is formed, and this embodiment does not limit this.

[0090] In these embodiments, a second anti-ultraviolet film 50 is provided on the light-emitting side P2 of the transparent display module 10, so that ultraviolet rays from the external environment can be prevented from passing through the transparent display module 10 from the light-emitting side P2 of the transparent display module 10 and irradiating the photosensitive film 20, and at the same time, ultraviolet rays in the external environment can be prevented from affecting the service life of the transparent display module 10.

[0091] In a third aspect, an embodiment of the present application provides a display device, comprising any of the above display screens 100 or a display screen 100 prepared by any of the above preparation methods.

[0092] Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted for facilitating the understanding of this application and are not intended to limit the present invention. Any technician in the technical field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of protection of this application shall still be subject to the scope defined in the attached claims.

[0093] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the replacement of other connection methods described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of the present application.

Claims

1. A display screen, characterized in that: include: A transparent display module, comprising a light-emitting unit; A photosensitive film is arranged on the backlight side of the transparent display module, the photosensitive film is configured to change color under the illumination of the light-emitting unit, and the light transmittance of the photosensitive film decreases as the brightness of the light-emitting unit increases.

2. The display screen according to claim 1, characterized in that: The display screen further comprises a first anti-ultraviolet film, and the first anti-ultraviolet film is arranged on a side of the photosensitive film away from the transparent display module.

3. The display screen according to claim 2, characterized in that: The display screen further comprises a support plate, the support plate is connected to the transparent display module, the photosensitive film and the first anti-ultraviolet film are respectively arranged on opposite sides of the support plate, and the photosensitive film is located between the support plate and the transparent display module; Preferably, the support plate is made of a light-transmitting material.

4. The display screen according to claim 3, characterized in that: The support plate is attached to the backlight side of the transparent display module; Preferably, the display screen further comprises a light-transmitting adhesive layer, and the support plate is bonded to the transparent display module via the light-transmitting adhesive layer; Preferably, the light-transmitting adhesive layer is located between the photosensitive film and the transparent display module, and the light-transmitting adhesive layer is provided as a whole layer.

5. The display screen according to any one of claims 1 to 4, characterized in that: The display screen further includes a second anti-ultraviolet film, and the second anti-ultraviolet film is arranged on the light-emitting side of the transparent display module.

6. The display screen according to any one of claims 1 to 4, characterized in that: The material of the photosensitive film includes photosensitive ink; Preferably, the material of the photosensitive film is formed by mixing photosensitive inks of multiple colors; Preferably, the material of the photosensitive film includes red photosensitive ink, blue photosensitive ink, yellow photosensitive ink and purple photosensitive ink.

7. A method for preparing a display screen, characterized in that: The preparation method comprises: forming a transparent display module, wherein the transparent display module comprises a light emitting unit; A photosensitive film is formed on the backlight side of the transparent display module, and the photosensitive film is configured to change color under the illumination of the light-emitting unit, and the light transmittance of the photosensitive film decreases as the brightness of the light-emitting unit increases.

8. The preparation method according to claim 7, characterized in that: The step of forming a photosensitive film on the backlight side of the transparent display module comprises: forming the photosensitive film on one side of the support plate; Transferring the support plate and the photosensitive film to the backlight side of the transparent display module; Preferably, before the step of transferring the support plate and the photosensitive film to the backlight side of the transparent display module, the method further includes: forming a light-transmitting adhesive layer on a side of the photosensitive film away from the support plate; The step of transferring the support plate and the photosensitive film to the backlight side of the transparent display module further includes: the support plate is attached to the transparent display module through the light-transmitting adhesive layer; Preferably, the step of forming the photosensitive film on one side of the support plate includes: The photosensitive film is formed on one side of the support plate through a coating process.

9. The preparation method according to claim 8, characterized in that: The preparation method further comprises: A first anti-ultraviolet film is formed on a side of the support plate away from the photosensitive film.

10. The preparation method according to any one of claims 7 to 9, characterized in that: After the step of forming the transparent display module, the method further includes: A second anti-ultraviolet film is formed on the light-emitting side of the transparent display module.

11. A display device, characterized in that: A display screen comprising the display screen described in any one of claims 1 to 6 or a display screen prepared by the preparation method described in any one of claims 7 to 10.

Images