Display screen and optical rotation integrated black composite film for display screen

Abstract

The utility model relates to the technical field of optics, is used for solving the problem that display of a display screen is in a gray white shape when the screen is turned off, and provides a display screen which comprises a display layer, a touch layer / cover plate layer and an optical rotation integrated black composite film arranged between the display layer and the touch layer / cover plate layer and used for the display screen. The optical rotation integrated black composite film for the display screen comprises a quarter-wave plate layer, a polaroid layer and an adhesive layer which are sequentially arranged in a stacked mode, the quarter-wave plate layer is arranged on the light emitting side of a display layer in an attached mode, and the adhesive layer is arranged on the inner surface side of a touch layer / cover plate layer in an attached mode; ambient light is converted into first linear polarized light through the polaroid layer during incidence; the polarized light is converted into left-hand circularly polarized light or right-hand circularly polarized light through the quarter-wave plate layer; when the ambient light is emitted, the ambient light is reflected and converted into reverse right-handed circularly polarized light or left-handed circularly polarized light through the display layer; the second linear polarized light is converted into second linear polarized light through the quarter-wave plate layer and is blocked by the polaroid layer, so that the display screen displays integrated black after the screen is turned off.

Description

Technical Field

[0001] The present application relates to the field of optical technology, and in particular to a display screen and an integrated black composite film for the display screen. Background Art

[0002] Many modern display products don't use a mouse, but instead use a touchscreen (TP). The refractive index of the material used for touchscreens differs from that of the display's outer surface. When external light strikes the display's outer surface, it reflects. This reflected light creates a noticeable difference in color between the display area and the ink printed on the entire outer ring of the touchscreen, preventing the desired "all-black" effect when the screen is off. Furthermore, the presence of reflected light reduces the overall screen contrast and color vividness.

[0003] At present, the effects of one-piece black are generally the following:

[0004] 1. Silk screen printing

[0005] After the cover is CNC-coated, tempered, and silk-screened / evaporated with a black border, a layer of semi-transparent IR ink is printed on the window area or button area of the glass cover. By adjusting the ink color and transmittance, a one-piece black effect is achieved.

[0006] 2. Magnetron sputtering

[0007] Through magnetron sputtering and optical principles, an inorganic film is directly coated on the glass cover to adjust the reflection, transmittance and color difference of the film window area, so that the color of the touch screen window and the silk-screen border are consistent.

[0008] 3. The cover is made of semi-transparent material

[0009] By adding color powder to the resin material and adjusting the amount of color powder added to the material, an "integrated black" effect can be achieved; glass can be colored during production, or a dyeing process can be used.

[0010] 4. Use smoked OCA / OCR adhesive

[0011] From the perspective of the display's structure, the "one-piece black" effect is achieved by the color consistency achieved by light passing through the cover plate, TP layer, LCM layer, and fully bonded optical adhesive. Therefore, in addition to the cover plate, TP, and LCM layers, the original transparent optical adhesive can be replaced with a smoky OCA / OCR adhesive to adjust the color and reduce the color difference between the display and the edge areas.

[0012] However, the above methods are still not ideal, and the display screen will appear grayish when it is turned off. Utility Model Content

[0013] The present application provides a display screen and an integrated black composite film for the display screen, so as to solve the technical problem in the background art that the display screen appears grayish white when the screen is turned off.

[0014] To solve the above-mentioned technical problems, the present application adopts a technical solution: providing a display screen, comprising a display layer, a touch layer / cover layer, and an optically active integrated black composite film for the display screen disposed between the display layer and the touch layer / cover layer, wherein the optically active integrated black composite film for the display screen comprises a quarter-wave plate layer, a polarizer layer, and an adhesive layer stacked in sequence, the quarter-wave plate layer being laminated to the light-emitting side of the display layer, and the adhesive layer being laminated to the inner surface of the touch layer / cover layer; wherein:

[0015] Ambient light passes through the touch layer / cover layer, the polarizer layer, and the quarter-wave plate layer and is incident on the surface of the display layer and reflected;

[0016] The polarizer layer is used to convert the ambient light into a first linear polarized light when the ambient light is incident;

[0017] The quarter wave plate layer is used to convert the first linear polarized light into left-handed circularly polarized light or right-handed circularly polarized light when the ambient light is incident;

[0018] The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the opposite right-handed circularly polarized light or the left-handed circularly polarized light when reflected by the display layer;

[0019] The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer when it is emitted. The second linear polarized light is rotated 90 degrees relative to the first linear polarized light and is blocked by the polarizer layer so that the display screen appears black after the screen is turned off.

[0020] Preferably, in the display screen, the optically active integrated black composite film for the display screen further includes a first outer film layer provided on one side of the quarter-wave plate layer and a second outer film layer provided on one side of the adhesive layer. The areas of the first outer film layer and the second outer film layer correspond to the areas of the quarter-wave plate layer, the polarizer layer, and the adhesive layer, and are torn off when being bonded to the display layer and the touch layer / cover layer.

[0021] Preferably, in the display screen, the phase difference value of the quarter-wave plate layer is between 80nm and 200nm, and the quarter-wave plate layer is made of a material with birefringence properties through coating or cast stretching. The material of the quarter-wave plate layer is polycarbonate, cycloolefin polymer, modified cellulose acetate or liquid crystal polymer.

[0022] Preferably, in the display screen, the polarizer layer is composed of a polyvinyl alcohol film dyed with a dichroic dye and stretched, and protective layers on both sides of the polyvinyl alcohol film, and the protective layers are cellulose triacetate, polymethyl methacrylate, polyethylene terephthalate or cycloolefin polymer.

[0023] Preferably, in the display screen, the adhesive layer is made of a high-temperature and high-humidity pressure-sensitive adhesive, and after the adhesive layer and the touch layer / cover layer are laminated, air bubbles are eliminated by applying heat and pressure.

[0024] To solve the above-mentioned technical problems, the present application adopts a technical solution: providing an optically active integrated black composite film for a display screen, the optically active integrated black composite film for a display screen comprising a quarter-wave plate layer, a polarizer layer, and an adhesive layer stacked in sequence, the quarter-wave plate layer being laminated to the light-emitting side of the display layer of the display screen, and the adhesive layer being laminated to the inner surface of the touch layer / cover layer of the display screen; wherein:

[0025] Ambient light passes through the touch layer / cover layer, the polarizer layer, and the quarter-wave plate layer and is incident on the surface of the display layer and reflected;

[0026] The polarizer layer is used to convert the ambient light into a first linear polarized light when the ambient light is incident;

[0027] The quarter wave plate layer is used to convert the first linear polarized light into left-handed circularly polarized light or right-handed circularly polarized light when the ambient light is incident;

[0028] The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the reverse right-handed circularly polarized light or the reverse left-handed circularly polarized light when reflected by the display layer;

[0029] The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer when it is emitted. The second linear polarized light is rotated 90 degrees relative to the first linear polarized light and is blocked by the polarizer layer so that the display screen appears black after the screen is turned off.

[0030] Preferably, in the optically active integrated black composite film for a display screen, the optically active integrated black composite film for a display screen further includes a first outer film layer and a second outer film layer, the areas of the first outer film layer and the second outer film layer correspond to the areas of the quarter-wave plate layer, the polarizer layer, and the adhesive layer, and are torn off when laminating with the display layer and the touch layer / cover layer.

[0031] Preferably, in the optically active integrated black composite film for a display screen, the phase difference value of the quarter-wave plate layer is between 80 nm and 200 nm, and the film is made of a material having birefringence properties by coating or cast stretching. The material of the quarter-wave plate layer is polycarbonate, cycloolefin polymer, modified cellulose acetate or liquid crystal polymer.

[0032] Preferably, in the optically active integrated black composite film for display screens, the polarizer layer is composed of a polyvinyl alcohol film dyed with a dichroic dye and stretched, and protective layers on both sides of the polyvinyl alcohol film, and the protective layers are cellulose triacetate, polymethyl methacrylate, polyethylene terephthalate or cycloolefin polymer.

[0033] Preferably, in the optically active integrated black composite film for display screens, the adhesive layer is made of a high-temperature and high-humidity pressure-sensitive adhesive. After the adhesive layer and the touch layer / cover layer are laminated, bubbles are eliminated by heating and pressurizing.

[0034] The beneficial effects of the present application are as follows: the display screen and the integrated black composite film for the display screen provided by the present application include a quarter-wave plate layer and a polarizer layer stacked in sequence from the inside to the outside. When ambient light is incident, it is converted into a first linear polarization through the polarizer layer; then converted into left-handed circularly polarized light or right-handed circularly polarized light through the quarter-wave plate layer; when ambient light is emitted, it is reflected by the display layer and converted into opposite right-handed circularly polarized light or left-handed circularly polarized light; then converted into a second linear polarization through the quarter-wave plate layer and blocked by the polarizer layer so that the display screen displays a better integrated black effect after the screen is turned off. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts. Among them:

[0036] Figure 1 This is a schematic side view of a simplified layer structure of a display screen provided in an embodiment of the present application;

[0037] Figure 2 This is a side view schematic diagram of the simplified layer structure of the integrated black composite film for display screens provided in an embodiment of the present application.

[0038] Description of reference numerals:

[0039] 110 , display layer; 120 , touch layer / cover layer; 210 , first outer film layer; 220 , quarter-wave plate layer; 230 , polarizer layer; 240 , adhesive layer; 250 , second outer film layer. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0041] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, and back infusion set injection parts with anti-pollution components), the directional indications are only used to explain the relative position relationship, movement, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] See also Figure 1 , Figure 1 It is a side view schematic diagram of the simplified layer structure of the display screen provided in an embodiment of the present application.

[0044] like Figure 1 As shown, an embodiment of the present application provides a display screen, comprising a display layer 110, a touch layer / cover layer 120, and a black composite film for optical rotation disposed between the display layer 110 and the touch layer / cover layer 120. When the outermost layer of the display screen is the touch layer, the display screen is touch-controlled; when the outermost layer is the cover layer, the display screen is a normal display screen that can be viewed. As is known, most current display screens are touch-sensitive. The display screen described in this embodiment can be a central control display screen in a car.

[0045] The optically active black composite film for display screens includes a sequentially stacked quarter-wave plate layer 220, a polarizer layer 230, and an adhesive layer 240. The quarter-wave plate layer 220 can be attached to the light-emitting side of the display layer 110 using a colloid, while the adhesive layer 240 is attached to the inner surface of the touch layer / cover layer 120. The thickness of the quarter-wave plate layer 220 can range from 1 μm to 1000 μm, the thickness of the polarizer layer 230 can range from 0.025 mm to 0.3 mm, and the thickness of the adhesive layer 240 can range from 15 μm to 500 μm.

[0046] The display screen provided in this application can display a good integrated black effect after the screen is turned off. The principle is as follows:

[0047] Ambient light passes through the touch layer / cover layer 120, the polarizer layer 230, and the quarter-wave plate layer 220 and is incident on the surface of the display layer 110 and reflected;

[0048] The polarizer layer 230 is used to convert ambient light into first linear polarized light when ambient light is incident;

[0049] The quarter wave plate layer 220 is used to convert the first linear polarized light into left-handed circularly polarized light or right-handed circularly polarized light when ambient light is incident;

[0050] The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the opposite right-handed circularly polarized light or the left-handed circularly polarized light when reflected by the display layer 110;

[0051] The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer when it is emitted. The second linear polarized light is rotated 90 degrees relative to the first linear polarized light and is blocked by the polarizer layer 230 so that the display screen appears completely black after the screen is turned off.

[0052] That is to say, by sequentially adding a quarter-wave plate layer 220 and a polarizer layer 230 to the display layer 110, the ambient light can be sequentially converted into a first linear polarization, left-handed circularly polarized light, or right-handed circularly polarized light when incident, and sequentially converted into opposite right-handed circularly polarized light or left-handed circularly polarized light, and a second linear polarization when reflected. The reflected second linear polarization cannot pass through the polarizer layer 230 because the angle does not match the polarizer layer 230, and is blocked by the polarizer layer 230 so that the display screen appears in a better integrated black state after the screen is turned off.

[0053] Please also refer to Figure 2 , Figure 2 This is a side view schematic diagram of the simplified layer structure of the integrated black composite film for display screens provided in an embodiment of the present application.

[0054] The optically active integrated black composite film for display screens of the present application also includes a first outer film layer 210 disposed on one side of the quarter-wave plate layer 220 and a second outer film layer 250 disposed on one side of the adhesive layer 240. The areas of the first outer film layer 210 and the second outer film layer 250 correspond to the areas of the quarter-wave plate layer 220, the polarizer layer 230, and the adhesive layer 240, and are torn off when attached to the display layer 110 and the touch layer / cover layer 120. The first outer film layer 210 is a protective film that protects and prevents scratches on the quarter-wave plate layer 220. The second outer film layer 250 is a release film that is easy to remove during installation and attachment. Handles can be provided on the first and second outer film layers 210, 250 as needed to further enhance the ease of removal of the first and second outer film layers 210, 250.

[0055] In the embodiment of the present application, the phase difference of the quarter-wave plate layer 220 is between 80 nm and 200 nm. Preferably, the phase difference of the quarter-wave plate layer 220 is between 100 nm and 150 nm. More preferably, the phase difference of the quarter-wave plate layer 220 is 140 nm. The quarter-wave plate layer 220 is made of a material having birefringence by coating or cast stretching. The material of the quarter-wave plate layer 220 is polycarbonate, cycloolefin polymer, modified cellulose acetate, or liquid crystal polymer.

[0056] In the embodiment of the present application, the polarizer layer 230 is composed of a polyvinyl alcohol film dyed with a dichroic dye and stretched, and protective layers on both sides of the polyvinyl alcohol film. The protective layers are films such as cellulose triacetate, polymethyl methacrylate, polyethylene terephthalate or cycloolefin polymer.

[0057] In the embodiment of the present application, the adhesive layer 240 is made of a high-temperature and high-humidity pressure-sensitive adhesive. After the adhesive layer 240 and the touch layer / cover layer 120 are bonded together, air bubbles are eliminated by applying heat and pressure.

[0058] like Figure 2 As shown, the embodiment of the present application further provides a black composite film for a display screen, which includes a quarter-wave plate layer 220, a polarizer layer 230, and an adhesive layer 240 stacked in sequence, wherein the quarter-wave plate layer 220 is used to be bonded to the light-emitting side of the display layer 110 of the display screen, and the adhesive layer 240 is used to be bonded to the inner surface side of the touch layer / cover layer 120 of the display screen. When the outermost layer of the display screen is the touch layer, the display screen is a touch-controlled display screen. When the outermost layer of the display screen is the cover layer, the display screen is an ordinary display screen that can be viewed. As is known to all, most display screens are touch-controlled displays. The display screen described in this embodiment can be a car central control display screen.

[0059] The display screen provided in this application can display a good integrated black effect after the screen is turned off. The principle is as follows:

[0060] Ambient light passes through the touch layer / cover layer 120, the polarizer layer 230, and the quarter-wave plate layer 220 and is incident on the surface of the display layer 110 and reflected;

[0061] The polarizer layer 230 is used to convert ambient light into first linear polarized light when ambient light is incident;

[0062] The quarter wave plate layer 220 is used to convert the first linear polarization light into left-handed circular polarization light or right-handed circular polarization light when ambient light is incident;

[0063] The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the opposite right-handed circularly polarized light or the left-handed circularly polarized light when reflected by the display layer 110;

[0064] The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer 220 when it is emitted. The second linear polarized light is rotated 90 degrees relative to the first linear polarized light and is blocked by the polarizer layer 230 so that the display screen displays a better integrated black state after the screen is turned off.

[0065] That is to say, the quarter-wave plate layer 220 and the polarizer layer 230 can convert the ambient light into the first linear polarization, left-handed circular polarization or right-handed circular polarization in sequence when it is incident, and convert it into the opposite right-handed circular polarization or left-handed circular polarization and the second linear polarization in sequence when it is reflected. The reflected second linear polarization cannot pass through the polarizer layer 230 because the angle does not match the polarizer layer 230, and is blocked by the polarizer layer 230 so that the display screen displays a better integrated black state after the screen is turned off.

[0066] As a product that can be sold independently, the optically active integrated black composite film for display screens also includes a first outer film layer 210 and a second outer film layer 250. The areas of the first and second outer film layers 210, 250 correspond to the areas of the quarter-wave plate layer 220, the polarizer layer 230, and the adhesive layer 240, and are removed when attached to the display layer 110 and the touch layer / cover layer 120. The first outer film layer 210 is a protective film that protects and prevents scratches on the quarter-wave plate layer 220. The second outer film layer 250 is a release film that is easy to remove during installation and attachment. Handles can be provided on the first and second outer film layers 210, 250 as needed to further enhance the ease of removal of the first and second outer film layers 210, 250.

[0067] The phase difference of the quarter-wave plate layer 220 is between 80 nm and 200 nm. Preferably, the phase difference of the quarter-wave plate layer 220 is between 100 nm and 150 nm. More preferably, the phase difference of the quarter-wave plate layer 220 is 140 nm. The quarter-wave plate layer 220 is made of a material having birefringence properties by coating or cast stretching. The material of the quarter-wave plate layer 220 is polycarbonate, cycloolefin polymer, modified cellulose acetate, or liquid crystal polymer. The thickness and width of the quarter-wave plate layer 220 are not specifically limited.

[0068] The polarizer layer 230 is composed of a polyvinyl alcohol film dyed with a dichroic dye and stretched, and protective layers on both sides of the polyvinyl alcohol film. The protective layers are made of cellulose triacetate, polymethyl methacrylate, polyethylene terephthalate or cycloolefin polymer. The polarization efficiency of the polarizer layer 230 is greater than 70%, generally between 80-99.999%. The thickness can be adjusted according to the actual usage scenario.

[0069] The adhesive layer 240 may be made of a high-temperature and high-humidity pressure-sensitive adhesive. After the adhesive layer 240 and the touch layer / cover layer 120 are bonded together, air bubbles are eliminated by applying heat and pressure.

[0070] In summary, it is easy for those skilled in the art to understand that the display screen and the integrated black composite film for the display screen provided by the present application include a quarter-wave plate layer 220 and a polarizer layer 230 stacked in sequence from the inside to the outside. When ambient light is incident, it is converted into a first linear polarized light through the polarizer layer 230; then converted into left-handed circularly polarized light or right-handed circularly polarized light through the quarter-wave plate layer 220; when the ambient light is emitted, it is reflected by the display layer 110 and converted into reverse right-handed circularly polarized light or left-handed circularly polarized light; then converted into a second linear polarized light through the quarter-wave plate layer 220 and blocked by the polarizer layer 230 so that the display screen displays a better integrated black effect after the screen is turned off.

[0071] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A display screen, characterized in that: The display screen comprises a display layer (110), a touch layer / cover layer (120), and an optically active integrated black composite film for the display screen arranged between the display layer (110) and the touch layer / cover layer (120), wherein the optically active integrated black composite film for the display screen comprises a quarter-wave plate layer (220), a polarizer layer (230), and an adhesive layer (240) stacked in sequence, wherein the quarter-wave plate layer (220) is laminated on the light-emitting side of the display layer (110), and the adhesive layer (240) is laminated on the inner surface side of the touch layer / cover layer (120); wherein: Ambient light passes through the touch layer / cover layer (120), the polarizer layer (230), and the quarter-wave plate layer (220), is incident on the surface of the display layer (110), and is reflected; The polarizer layer (230) is used to convert the ambient light into first linear polarized light when the ambient light is incident; The quarter-wave plate layer (220) is used to convert the first linear polarized light into left-handed circularly polarized light or right-handed circularly polarized light when the ambient light is incident; The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the opposite right-handed circularly polarized light or the left-handed circularly polarized light when reflected by the display layer (110); The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer when emitted, the second linear polarized light being rotated 90 degrees relative to the first linear polarized light and being blocked by the polarizer layer (230) so that the display screen appears entirely black after the screen is turned off; The thickness of the quarter-wave plate layer (220) ranges from 1 um to 1000 um.

2. The display screen according to claim 1, wherein: The optically active integrated black composite film for a display screen further comprises a first outer film layer (210) provided on one side of the quarter-wave plate layer (220) and a second outer film layer (250) provided on one side of the adhesive layer (240), wherein the areas of the first outer film layer (210) and the second outer film layer (250) correspond to the areas of the quarter-wave plate layer (220), the polarizer layer (230), and the adhesive layer (240), and are torn off when being bonded to the display layer (110) and the touch layer / cover layer (120).

3. The display screen according to claim 1, wherein: The phase difference value of the quarter-wave plate layer (220) is between 80 nm and 200 nm.

4. The display screen according to claim 1, wherein: The thickness of the polarizer layer (230) ranges from 0.025 mm to 0.3 mm.

5. The display screen according to claim 1, wherein: The thickness of the adhesive layer (240) ranges from 15um to 500um.

6. A black composite film with optical rotation for display screens, characterized by: The optically rotating integrated black composite film for a display screen comprises a quarter-wave plate layer (220), a polarizing plate layer (230), and an adhesive layer (240) stacked in sequence, wherein the quarter-wave plate layer (220) is used to be bonded to the light-emitting side of the display layer (110) of the display screen, and the adhesive layer (240) is used to be bonded to the inner surface side of the touch layer / cover layer (120) of the display screen; wherein: Ambient light passes through the touch layer / cover layer (120), the polarizer layer (230), and the quarter-wave plate layer (220), is incident on the surface of the display layer (110), and is reflected; The polarizer layer (230) is used to convert the ambient light into first linear polarized light when the ambient light is incident; The quarter-wave plate layer (220) is used to convert the first linearly polarized light into left-handed circularly polarized light or right-handed circularly polarized light when the ambient light is incident; The left-handed circularly polarized light or the right-handed circularly polarized light is converted into the opposite right-handed circularly polarized light or the left-handed circularly polarized light when reflected by the display layer (110); The reverse right-handed circularly polarized light or left-handed circularly polarized light is converted into a second linear polarized light by the quarter-wave plate layer when emitted, the second linear polarized light being rotated 90 degrees relative to the first linear polarized light and being blocked by the polarizer layer (230) so that the display screen appears entirely black after the screen is turned off; The thickness of the quarter-wave plate layer (220) ranges from 1 um to 1000 um.

7. The optically active integrated black composite film for display screens according to claim 6, characterized in that: The optically active integrated black composite film for a display screen further comprises a first outer film layer (210) and a second outer film layer (250), wherein the areas of the first outer film layer (210) and the second outer film layer (250) correspond to the areas of the quarter-wave plate layer (220), the polarizer layer (230), and the adhesive layer (240), and are torn off when being bonded to the display layer (110) and the touch layer / cover layer (120).

8. The optically active integrated black composite film for display screens according to claim 6, characterized in that: The phase difference value of the quarter-wave plate layer (220) is between 80 nm and 200 nm.

9. The optically active integrated black composite film for display screens according to claim 6, characterized in that: The thickness of the polarizer layer (230) ranges from 0.025 mm to 0.3 mm.

10. The optically active integrated black composite film for display screens according to claim 6, characterized in that: The thickness of the adhesive layer (240) ranges from 15um to 500um.

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