A method for manufacturing a display module, a display module and a display device

Abstract

The present invention provides a method for manufacturing a display module, a display module and a display device, and relates to the field of display technology. The present invention provides a display panel; forms a reflective layer on the light-emitting surface of the display panel; forms an optical structure on the side of the reflective layer away from the display panel; wherein the optical structure includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure is formed on the side of the reflective layer away from the display panel through a deposition process or a one-time attachment process. The optical structure is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, thereby reducing the stimulation of yellow-green light to the human eye, and the optical structure is formed on the side of the reflective layer away from the display panel through a one-time attachment process or a deposition process, thereby avoiding the phenomenon that bubbles are easily generated by multiple film attachments, causing the film layer to fall off.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a method for manufacturing a display module, a display module and a display device. Background Art

[0002] Liquid crystal display products have been widely used in vehicle rearview mirrors in the automotive industry. In order to clearly observe the road conditions when driving at night, the vehicle behind will use high beams to illuminate the front. Since most headlights use high-sensitivity halogen lamps, this will cause dazzle to the driver of the vehicle in front.

[0003] At present, in order to avoid dazzle to the driver, it is necessary to attach a second semi-transparent and semi-reflective film and a blue film to the rearview mirror, such as Figure 1 As shown, the rearview mirror includes a backlight source 10, a liquid crystal display screen 12, a first semi-transparent and semi-reflective film 11 attached to the side opposite to the light-emitting side of the liquid crystal display screen 12, and a display glass liner 13 and a polarizer 14 located on the light-emitting side of the liquid crystal display screen 12, and then a second semi-transparent and semi-reflective film 15 is attached to the polarizer 14, and a blue film 16 is attached to the second semi-transparent and semi-reflective film 15. Since the human eye is less sensitive to blue light and more sensitive to yellow-green light, the yellow-green light entering the human eye will cause dazzle to the human eye. Therefore, by attaching the blue film, the reflectivity of the yellow-green light can be reduced, thereby reducing the yellow-green light reflected into the human eye, so as to reduce the dazzle caused by the yellow-green light to the human eye.

[0004] However, in the prior art, by attaching a second semi-transparent and semi-reflective film 15 and a blue film 16 on the rearview mirror, the rear viewing angle needs to be filmed multiple times to prevent glare. However, bubbles or deformation are easily generated between the second semi-transparent and semi-reflective film 15 and the blue film 16. Especially after the rearview mirror is turned on in winter, the heat generated when the rearview mirror is running is more likely to cause bubbles or deformation of the film layer attached thereto, making the attached blue film 16 not wear-resistant and easy to fall off, and the bubbles generated will also affect the display effect. Summary of the invention

[0005] The present invention provides a method for manufacturing a display module, a display module and a display device, so as to solve the problem that the existing display module needs to be pasted with films for many times, and bubbles are easily generated during the pasting, resulting in the blue film being not wear-resistant and easy to fall off.

[0006] In order to solve the above problems, the present invention discloses a method for manufacturing a display module, comprising:

[0007] providing a display panel;

[0008] forming a reflective layer on the light emitting surface of the display panel;

[0009] forming an optical structure on a side of the reflective layer away from the display panel;

[0010] Wherein, the optical structure includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure is formed on a side of the reflective layer away from the display panel through a deposition process or a one-time attachment process.

[0011] Optionally, before the step of forming an optical structure on a side of the reflective layer away from the display panel, the method further includes:

[0012] forming a cover plate covering the reflective layer;

[0013] Wherein, the optical structure is located on the cover plate.

[0014] Optionally, after the step of forming an optical structure on a side of the reflective layer away from the display panel, the method further includes:

[0015] forming a cover plate covering the optical structure;

[0016] Wherein, the optical structure is located on the reflective layer.

[0017] Optionally, the optical film layer is any one of an interference cutoff filter film layer, an anti-reflection film layer or a reflection enhancement film layer.

[0018] Optionally, when the optical film layer is an interference cut-off filter film layer, the interference cut-off filter film layer includes a first high refractive index layer, a first low refractive index layer, and a second high refractive index layer which are stacked, and the second high refractive index layer is located on a side of the first high refractive index layer away from the display panel;

[0019] The optical film thickness of the first high refractive index layer is λ8, the optical film thickness of the first low refractive index layer is λ4, and the optical film thickness of the second high refractive index layer is λ8; λ is the wavelength of the incident light incident on the interference cut-off filter film layer;

[0020] The thickness of the first high refractive index layer and the second high refractive index layer are both 30 nm to 60 nm, and the thickness of the first low refractive index layer is 90 nm to 120 nm.

[0021] Optionally, when the optical film layer is an anti-reflection film layer, the anti-reflection film layer comprises a third high refractive index layer, a second low refractive index layer and a fourth high refractive index layer which are stacked, and the fourth high refractive index layer is located on a side of the third high refractive index layer away from the display panel;

[0022] The optical film thickness of the third high refractive index layer is λ4, the optical film thickness of the second low refractive index layer is λ4, and the optical film thickness of the fourth high refractive index layer is λ4; λ is the wavelength of the incident light incident on the anti-reflection film layer;

[0023] The thickness of the third high refractive index layer and the fourth high refractive index layer are both 50 nm to 100 nm, and the thickness of the second low refractive index layer is 90 nm to 120 nm.

[0024] Optionally, when the optical film layer is an anti-reflection film layer, the anti-reflection film layer includes a fifth high refractive index layer; or, the anti-reflection film layer includes a fifth high refractive index layer and a third low refractive index layer, and the third low refractive index layer is located on a side of the fifth high refractive index layer away from the display panel;

[0025] The optical film thickness of the fifth high refractive index layer is λ4, and the optical film thickness of the third low refractive index layer is λ4; λ is the wavelength of the incident light incident on the anti-reflection film layer;

[0026] The thickness of the fifth high refractive index layer is 50 nm to 100 nm, and the thickness of the third low refractive index layer is 70 nm to 200 nm.

[0027] In order to solve the above problems, the present invention further discloses a display module, comprising:

[0028] Display panel;

[0029] A reflective layer located on the light emitting surface of the display panel;

[0030] an optical structure located at a side of the reflective layer away from the display panel;

[0031] Wherein, the optical structure includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure is formed on a side of the reflective layer away from the display panel through a deposition process or a one-time attachment process.

[0032] Optionally, the display module further includes a cover plate; the cover plate covers the reflective layer, and the optical structure is located on the cover plate.

[0033] Optionally, the display module further includes a cover plate; the optical structure is located on the reflective layer, and the cover plate covers the optical structure.

[0034] In order to solve the above problem, the present invention further discloses a display device, comprising the above display module.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] In an embodiment of the present invention, a display panel is provided; a reflective layer is formed on the light-emitting surface of the display panel; an optical structure is formed on the side of the reflective layer away from the display panel; wherein the optical structure includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure is formed on the side of the reflective layer away from the display panel by a deposition process or a one-time attachment process. The at least one optical film layer included in the optical structure is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, thereby reducing the stimulation of the reflection of yellow-green light to the human eye, so that the human eye receives more blue light with lower sensitivity, thereby preventing the driver from being dazzled; in addition, the optical structure is formed on the side of the reflective layer away from the display panel by a one-time attachment process or a deposition process. When the optical structure is formed by a one-time attachment process, the number of attachments of the film layer can be reduced, and the problem of multiple film attachments easily generating bubbles, not wear-resistant, and easy to fall off is reduced. When the optical structure is formed by a deposition process, no film attachment is required, thereby avoiding the problem of multiple film attachments easily generating bubbles, not wear-resistant, and easy to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A cross-sectional view of a display module in the prior art is shown;

[0038] Figure 2 A flow chart showing a method for manufacturing a display module according to an embodiment of the present invention is shown;

[0039] Figure 3 A cross-sectional view of a display module according to an embodiment of the present invention is shown;

[0040] Figure 4 A cross-sectional view of another display module according to an embodiment of the present invention is shown; DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Embodiment 1

[0043] Reference Figure 2 , shows a flow chart of a method for manufacturing a display module according to an embodiment of the present invention, which may specifically include the following steps:

[0044] Step 201, providing a display panel.

[0045] In the embodiment of the present invention, Figure 3As shown, a display panel 30 is provided, and the display panel 30 is used to provide a carrier for the subsequent formation of a reflective layer. The display panel 30 is an OLED (Organic Light-Emitting Diode) display panel or an LCD (Liquid Crystal Display) display panel.

[0046] When the display panel 30 is an OLED display panel, the display panel 30 includes a TFT (Thin Film Transistor) backplane, an anode, an organic light-emitting layer, a cathode and an encapsulation layer. The TFT backplane includes a substrate and a driving circuit formed on the substrate. The TFT backplane can be an LTPS-TFT (Low Temperature Poly-Silicon-Thin Film Transistor) or an IGZO-TFT (indiumgallium zinc oxide-Thin Film Transistor). The present invention does not limit this. Using LTPS-TFT or IGZO-TFT can make the display panel 30 have a higher response speed. Moreover, when the display panel 30 is an OLED display panel, since it has fewer components, such as no need to attach a polarizer, no need to set a backlight source, etc., the entire display panel 30 will be relatively light and thin. In addition, the OLED display panel in the embodiment of the present invention can use PI (Polyimide) as the base substrate. Since PI is flexible, the curvature radius of the display panel 30 can be changed, thereby increasing the display viewing angle range of the display panel 30.

[0047] When the display panel 30 is an LCD display panel, the LCD display panel includes an array substrate, a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate. A first polarizer is attached to the side of the array substrate in the LCD display panel away from the liquid crystal layer, and a second polarizer is attached to the side of the color filter substrate in the LCD display panel away from the liquid crystal layer. In addition, a backlight source is required to provide the LCD display panel with the light required for display.

[0048] Step 202: forming a reflective layer on the light emitting surface of the display panel.

[0049] In an embodiment of the present invention, a reflective film is formed on the light-emitting surface of the display panel 30, a photoresist is coated on the reflective film, the photoresist is exposed and developed, so that the reflective film not covered by the photoresist after development leaks out, and the reflective film not covered by the photoresist after development is etched to form a patterned reflective layer 31, the reflective layer 31 is used to reflect the light irradiated thereon, the reflective layer 31 has a plurality of hollow areas, and the orthographic projection of the hollow areas on the base substrate in the display panel 30 overlaps with the orthographic projection of the organic light-emitting layer on the base substrate, so as to prevent the light emitted by the organic light-emitting layer from being reflected by the reflective layer 31, thereby affecting the light extraction efficiency of the display panel 30.

[0050] The material of the reflective layer 31 is one or more materials such as MO, Al, Ti, Ti / Al / Ti, ITO / Ag / ITO, Al-based alloys, Ag-based metals, and metal compounds.

[0051] Step 203, forming an optical structure on a side of the reflective layer away from the display panel; wherein the optical structure includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure is formed on a side of the reflective layer away from the display panel by a deposition process or a one-time attachment process.

[0052] In the embodiment of the present invention, after the reflective layer 31 is formed, an optical structure 33 is formed on a side of the reflective layer 31 away from the display panel 30. The optical structure 33 includes at least one optical film layer, and the optical film layer is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, that is, enhance the reflectivity of blue light in the wavelength band of 400nm to 500nm and / or reduce the reflectivity of yellow-green light in the wavelength band of 500nm to 600nm. Since the human eye is less sensitive to blue light and more sensitive to yellow-green light, reducing the reflectivity of yellow-green light can reduce the glare caused by the reflection of yellow-green light into the human eye, and the human eye is less sensitive to blue light, so the blue light will not dazzle the human eye. Enhancing the reflectivity of blue light can allow more blue light to be reflected into the human eye, and the human eye can judge the current driving environment through the blue light.

[0053] In the embodiment of the present invention, the optical structure 33 is formed on the side of the reflective layer 31 away from the display panel 30 by a deposition process or a one-time attachment process, that is, the optical structure 33 composed of at least one optical film layer can be formed on the side of the reflective layer 31 away from the display panel 30 by a one-time attachment process, and only one attachment process is performed, which reduces the problem of bubbles easily generated by multiple film attachments, causing the film to fall off. Alternatively, the optical structure 33 composed of at least one optical film layer is formed on the side of the reflective layer 31 away from the display panel 30 by a deposition process. When the deposition process is used, the optical structure 33 and the film layer located below it are integrated together, so no bubbles will be generated between the optical structure 33 and the film layer located below it, and there will be no risk of the optical structure 33 falling off.

[0054] It should be noted that when a single attachment process is used to form the optical structure 33 on the side of the reflective layer 31 away from the display panel 30, the optical film layers contained in the optical structure 33 itself are all formed on a substrate through a deposition process, and then the optical structure 33 is peeled off from the substrate, and the peeled optical structure 33 is attached to the side of the reflective layer 31 away from the display panel 30, and the optical film layers in the optical structure 33 are formed through a deposition process. This avoids the problem of bubbles being generated between the optical film layers in the optical structure 33 when the temperature changes after the optical structure 33 is formed through the attachment process between the multiple optical film layers, resulting in the separation of the optical film layers in the optical structure 33.

[0055] In an embodiment of the present invention, the optical film layer can be any one of an interference cutoff filter film layer, an anti-reflection film layer or an interference cutoff filter film layer, wherein the interference cutoff filter film layer is used to increase the reflectivity of blue light while increasing the transmittance of yellow-green light (i.e., reducing the reflectivity of yellow-green light); the anti-reflection film layer is used to increase the reflectivity of blue light; and the anti-reflection film layer is used to reduce the reflectivity of yellow-green light.

[0056] In an optional embodiment of the present invention, when the optical film layer is an interference cutoff filter film layer, the interference cutoff filter film layer includes a first high refractive index layer, a first low refractive index layer and a second high refractive index layer which are stacked, and the second high refractive index layer is located on a side of the first high refractive index layer away from the display panel; wherein the optical film thickness of the first high refractive index layer is λ8, the optical film thickness of the first low refractive index layer is λ4, and the optical film thickness of the second high refractive index layer is λ8; λ is the wavelength of incident light incident on the interference cutoff filter film layer; the thicknesses of the first high refractive index layer and the second high refractive index layer are both 30nm to 60nm, and the thickness of the first low refractive index layer is 90nm to 120nm.

[0057] Specifically, in an embodiment of the present invention, the interference cutoff filter film layer includes a first high refractive index layer with an optical film thickness of λ8, a first low refractive index layer with an optical film thickness of λ4, and a second high refractive index layer with an optical film thickness of λ8. In the actual manufacturing process, when the deposition process is used to form the optical structure 33, the first high refractive index layer is first deposited on the side of the reflective layer 31 away from the display panel 30, and then the first low refractive index layer is deposited on the first high refractive index layer. Finally, the second high refractive index layer is deposited on the first low refractive index layer, thereby forming an optical structure 33 composed of interference cutoff filter film layers; when the one-time attachment process is used to form the optical structure 33, the first high refractive index layer is first deposited on a substrate, and then the first low refractive index layer is deposited on the first high refractive index layer. Finally, the second high refractive index layer is deposited on the first low refractive index layer, thereby forming an optical structure 33 composed of interference cutoff filter film layers, and then the optical structure 33 is peeled off from the substrate, and the peeled optical structure 33 is attached to the side of the reflective layer 31 away from the display panel 30.

[0058] Generally, interference cutoff filters include long-wave interference cutoff filters and short-wave interference cutoff filters. The interference cutoff filter film layer in the embodiment of the present invention adopts the design of long-wave interference cutoff filter, which is used to highly transmit light beams within a certain wavelength range, and highly reflect (or suppress) light beams that deviate from this wavelength range. In the embodiment of the present invention, the thickness of the first high refractive index layer and the second high refractive index layer in the interference cutoff filter film layer are both set to 30nm~60nm, and the thickness of the first low refractive index layer is set to 90nm~120nm, which can increase the reflectivity of blue light and increase the transmittance of yellow-green light. When the optical structure 33 is formed by the interference cutoff filter film layer, the optical structure 33 can include a single interference cutoff filter film layer, or can include multiple interference cutoff filter film layers, which is not limited by the present invention.

[0059] In another optional embodiment of the present invention, when the optical film layer is an anti-reflection film layer, the anti-reflection film layer includes a third high refractive index layer, a second low refractive index layer and a fourth high refractive index layer which are stacked, and the fourth high refractive index layer is located on the side of the third high refractive index layer away from the display panel; wherein the optical film thickness of the third high refractive index layer is λ4, the optical film thickness of the second low refractive index layer is λ4, and the optical film thickness of the fourth high refractive index layer is λ4; λ is the wavelength of incident light incident on the anti-reflection film layer; the thickness of the third high refractive index layer and the fourth high refractive index layer are both 50nm~100nm, and the thickness of the second low refractive index layer is 90nm~120nm, wherein the optical film thickness can also be called optical thickness, which refers to the total attenuation caused by absorbing and scattering substances per unit cross-sectional area.

[0060] Specifically, in an embodiment of the present invention, the anti-reflection film layer includes a third high refractive index layer with an optical film thickness of λ4, a second low refractive index layer with an optical film thickness of λ4, and a fourth high refractive index layer with an optical film thickness of λ4. In the actual manufacturing process, when the deposition process is used to form the optical structure 33, the third high refractive index layer is first deposited on the side of the reflective layer 31 away from the display panel 30, and then the second low refractive index layer is deposited on the third high refractive index layer. Finally, the fourth high refractive index layer is deposited on the second low refractive index layer, thereby forming an optical structure 33 composed of anti-reflection film layers; when the one-time attachment process is used to form the optical structure 33, the third high refractive index layer is first deposited on a substrate, and then the second low refractive index layer is deposited on the third high refractive index layer. Finally, the fourth high refractive index layer is deposited on the second low refractive index layer, thereby forming an optical structure 33 composed of anti-reflection film layers, and then the optical structure 33 is peeled off from the substrate, and the peeled optical structure 33 is attached to the side of the reflective layer 31 away from the display panel 30.

[0061] When external light is incident on the anti-reflection film layer, the incident light enters the fourth high refractive index layer, and a part of the incident light is reflected at the interface between the fourth high refractive index layer and the second low refractive index layer to form a first reflected light. The incident light enters the second low refractive index layer from the fourth high refractive index layer, and enters the optically dense medium into the optically sparse medium without half-wave loss. Another part of the incident light is refracted at the interface between the fourth high refractive index layer and the second low refractive index layer and enters the second low refractive index layer. The light entering the second low refractive index layer is reflected at the interface between the second low refractive index layer and the third high refractive index layer to form a second reflected light. The light enters the second low refractive index layer from the second low refractive index layer to form a second reflected light. The optical path difference between the second reflected light and the first reflected light is λ, which is an even multiple of half the wavelength. Therefore, the first reflected light and the second reflected light will form constructive interference after meeting, that is, the first reflected light will produce the largest amplitude after the interference with the second reflected light, so that the energy of the reflected light can be increased and the reflected light can be enhanced. The thickness of the third high refractive index layer and the fourth high refractive index layer is set to 50nm~100nm, and the thickness of the second low refractive index layer is set to 90nm~120nm. The anti-reflection film layer can enhance the reflectivity of blue light. When the optical structure 33 is formed by an anti-reflection film layer, the optical structure 33 can include a single anti-reflection film layer or multiple anti-reflection film layers, and the present invention does not limit this.

[0062] In another optional embodiment of the present invention, when the optical film layer is an anti-reflection film layer, the anti-reflection film layer includes a fifth high refractive index layer; or, the anti-reflection film layer includes a fifth high refractive index layer and a third low refractive index layer, and the third low refractive index layer is located on the side of the fifth high refractive index layer away from the display panel; wherein the optical film thickness of the fifth high refractive index layer is λ4, and the optical film thickness of the third low refractive index layer is λ4; λ is the wavelength of incident light incident on the anti-reflection film layer; the thickness of the fifth high refractive index layer is 50nm~100nm, and the thickness of the third low refractive index layer is 70nm~200nm.

[0063] Specifically, in an embodiment of the present invention, the optical film layer is an anti-reflection film layer, which includes a fifth high refractive index layer with an optical film thickness of λ4, or the anti-reflection film layer includes a fifth high refractive index layer with an optical film thickness of λ4 and a third low refractive index layer with an optical film thickness of λ4.

[0064] When the anti-reflection film layer only includes the fifth high refractive index layer, the fifth high refractive index layer is formed on the side of the reflective layer 31 away from the display panel. In the actual manufacturing process, when the optical structure 33 is formed by a deposition process, the fifth high refractive index layer is deposited on the side of the reflective layer 31 away from the display panel 30, thereby forming an optical structure 33 composed of anti-reflection film layers; when the optical structure 33 is formed by a one-time attachment process, the fifth high refractive index layer is deposited on a substrate, thereby forming an optical structure 33 composed of anti-reflection film layers, and then the optical structure 33 is peeled off from the substrate, and the peeled optical structure 33 is attached to the side of the reflective layer 31 away from the display panel 30.

[0065] When the anti-reflection film layer includes a fifth high refractive index layer and a third low refractive index layer, in the actual manufacturing process, when the deposition process is used to form the optical structure 33, the fifth high refractive index layer is first deposited on the side of the reflective layer 31 away from the display panel 30, and then the third low refractive index layer is deposited on the fifth high refractive index layer, thereby forming an optical structure 33 composed of anti-reflection film layers; when the optical structure 33 is formed by a one-time attachment process, the fifth high refractive index layer is deposited on a substrate, and then the third low refractive index layer is deposited on the fifth high refractive index layer, thereby forming an optical structure 33 composed of anti-reflection film layers, and then the optical structure 33 is peeled off from the substrate, and the peeled optical structure 33 is attached to the side of the reflective layer 31 away from the display panel 30.

[0066] In the embodiment of the present invention, since the refractive index of the fifth high refractive index layer is relatively high, after the fifth high refractive index layer is combined with the film layer located below it, a new film layer structure is formed, and the refractive index of the new film layer structure is greater than the refractive index of the film layer structure when the fifth high refractive index layer is not formed. Therefore, when light is irradiated onto the fifth high refractive index film layer, due to the large refractive index, the refraction angle is small, thereby increasing the transmittance of the incident light, that is, reducing the reflectivity of the incident light. The thickness of the fifth high refractive index layer is set to 50nm to 100nm, and the thickness of the third low refractive index layer is set to 70nm to 200nm, which can reduce the reflectivity of yellow-green light and reduce the stimulation of yellow-green light to the human eye. When the optical structure 33 is formed by an anti-reflection film layer, the optical structure 33 may include a single anti-reflection film layer, or may include multiple anti-reflection film layers, and the present invention does not limit this.

[0067] Further, in an embodiment of the present invention, the refractive index of the first high refractive index layer, the second high refractive index layer, the third high refractive index layer, the fourth high refractive index layer and the fifth high refractive index layer in the visible light range are all 1.6-2.5, and the refractive index of the first low refractive index layer, the second low refractive index layer and the third low refractive index layer in the visible light range are all 1.3-1.5; the materials of the first high refractive index layer, the second high refractive index layer, the third high refractive index layer, the fourth high refractive index layer and the fifth high refractive index layer are all titanium dioxide, niobium pentoxide or silicon nitride, and the materials of the first low refractive index layer, the second low refractive index layer and the third low refractive index layer are all silicon dioxide or magnesium fluoride.

[0068] In an embodiment of the present invention, before step 203, the method further includes forming a cover plate covering the reflective layer; wherein the optical structure is located on the cover plate.

[0069] In the embodiment of the present invention, before the step of forming the optical structure 33, a cover plate 32 covering the reflective layer 31 is first formed. Figure 3 As shown, the cover plate 32 is placed on the reflective layer 31, and then an optical structure 33 is formed on the cover plate 32 by a single attachment, wherein the cover plate 32 is used to protect the film layer structure located below it. At this time, the optical structure 33 is formed on the cover plate 32 by a single attachment, and the process does not require multiple attachment processes, which can reduce the generation of bubbles between the film layers due to multiple attachments and the phenomenon of film layer shedding.

[0070] In another optional embodiment of the present invention, after step 203, the method further includes forming a cover plate covering the optical structure; wherein the optical structure is located on the reflective layer.

[0071] In the embodiment of the present invention, Figure 4As shown, an optical structure 33 is first formed on the reflective layer 31 by deposition, and then a cover plate 32 covering the optical structure 33 is formed, and the cover plate 32 is used to protect the film layer structure located below it. At this time, the optical structure 33 is formed on the reflective layer 31 by deposition, so the optical structure 33 and the film layer structure below it are integrated together. Compared with the attachment process, the optical structure 33 formed by the deposition process is in closer contact with the reflective layer 31 and the display panel 30, and bubbles will not be generated with changes in temperature, thereby causing the problem of the optical structure 33 falling off.

[0072] In an embodiment of the present invention, the at least one optical film layer included in the optical structure is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, thereby reducing the stimulation of the reflection of yellow-green light to the human eye, allowing the human eye to receive more blue light with lower sensitivity, thereby preventing the driver from being dazzled; in addition, the optical structure is formed on the side of the reflective layer away from the display panel through a one-time attachment process or a deposition process. When the optical structure is formed by a one-time attachment process, the number of attachments of the film layer can be reduced, thereby reducing the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off. When the optical structure is formed by a deposition process, there is no need to attach the film layer, thereby avoiding the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off.

[0073] Embodiment 2

[0074] In an embodiment of the present invention, a display module is provided, which can be manufactured by the manufacturing method of the display module as described in Example 1, and the display module includes: a display panel 30; a reflective layer 31 located on the light emitting surface of the display panel 30; and an optical structure 33 located on a side of the reflective layer 31 away from the display panel 30; wherein the optical structure 33 includes at least one optical film layer, and the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light; the optical structure 33 is formed on a side of the reflective layer 31 away from the display panel 30 by a deposition process or a one-time attachment process.

[0075] In the embodiment of the present invention, the display panel 30 is an OLED (Organic Light-Emitting Diode) display panel or an LCD (Liquid Crystal Display) display panel.

[0076] In the embodiment of the present invention, the optical structure 33 is formed on the side of the reflective layer 31 away from the display panel 30 by a deposition process or a one-time attachment process, which can reduce the number of film attachments, thereby reducing the problem of bubbles generated by multiple film attachments and film shedding.

[0077] Among them, the reflective layer 31 is used to reflect the light irradiated thereon. The reflective layer 31 has multiple hollow areas, and the orthographic projection of the hollow areas on the base substrate in the display panel 30 overlaps with the orthographic projection of the organic light-emitting layer on the base substrate to prevent the light emitted by the organic light-emitting layer from being reflected by the reflective layer 31, thereby affecting the light output efficiency of the display panel 30.

[0078] The material of the reflective layer 31 is one or more materials such as MO, Al, Ti, Ti / Al / Ti, ITO / Ag / ITO, Al-based alloys, Ag-based metals, and metal compounds.

[0079] In an optional embodiment of the present invention, the display module further includes a cover plate 32 ; the cover plate 32 covers the reflective layer 31 , and the optical structure 33 is located on the cover plate 32 .

[0080] In the embodiment of the present invention, the optical structure 33 is formed on the cover plate 32 by an attachment process. The cover plate 32 covers the reflective layer 31 to protect the film layer structure located thereunder.

[0081] In another optional embodiment of the present invention, the display module further includes a cover plate 32 ; the optical structure 33 is located on the reflective layer 31 , and the cover plate 32 covers the optical structure 33 .

[0082] In the embodiment of the present invention, the optical structure 33 is formed on the reflective layer 31 through a deposition process, and the cover plate 32 covers the optical structure 33 to protect the film layer structure located thereunder.

[0083] In an embodiment of the present invention, the at least one optical film layer included in the optical structure is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, thereby reducing the stimulation of the reflection of yellow-green light to the human eye, allowing the human eye to receive more blue light with lower sensitivity, thereby preventing the driver from being dazzled; in addition, the optical structure is formed on the side of the reflective layer away from the display panel through a one-time attachment process or a deposition process. When the optical structure is formed by a one-time attachment process, the number of attachments of the film layer can be reduced, thereby reducing the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off. When the optical structure is formed by a deposition process, there is no need to attach the film layer, thereby avoiding the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off.

[0084] Embodiment 3

[0085] In an embodiment of the present invention, a display device is further provided, comprising the above-mentioned display module.

[0086] For a detailed description of the display module, reference may be made to the description of the second embodiment, which will not be described in detail in the embodiment of the present invention.

[0087] The display device also includes components such as a driving chip.

[0088] In the embodiment of the present invention, the display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a laptop computer, a vehicle-mounted display product, or the like.

[0089] In an embodiment of the present invention, the at least one optical film layer included in the optical structure is used to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, thereby reducing the stimulation of the reflection of yellow-green light to the human eye, allowing the human eye to receive more blue light with lower sensitivity, thereby preventing the driver from being dazzled; in addition, the optical structure is formed on the side of the reflective layer away from the display panel through a one-time attachment process or a deposition process. When the optical structure is formed by a one-time attachment process, the number of attachments of the film layer can be reduced, thereby reducing the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off. When the optical structure is formed by a deposition process, there is no need to attach the film layer, thereby avoiding the problems of bubbles easily generated by multiple film attachments, poor wear resistance, and easy falling off.

[0090] For the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the order of the actions described, because according to the present invention, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0091] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0092] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0093] The above is a detailed introduction to a method for manufacturing a display module, a display module and a display device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A method for manufacturing a display module, applied to an OLED display panel, wherein the substrate material of the OLED display panel is polyimide, characterized in that: include: providing a display panel; A reflective layer is formed on the light emitting surface of the display panel; wherein the reflective layer has a plurality of hollow regions, and the orthographic projections of the plurality of hollow regions on the base substrate of the display panel overlap with the orthographic projections of the organic light emitting layer on the base substrate; forming an optical structure on a side of the reflective layer away from the display panel; The optical structure includes at least one optical film layer, the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, and the optical film layer is any one of an interference cut-off filter film layer, an anti-reflection film layer or an anti-reflection film layer; the optical structure is formed on a side of the reflective layer away from the display panel by a deposition process, so that the optical structure includes an optical film layer located in the hollow area and an optical film layer located on a side of the reflective layer away from the substrate; the optical structure is integrated with the reflective layer, and no bubbles are generated between the optical structure and the film layer located below it; A cover plate is formed on a side of the optical structure away from the display panel.

2. The method according to claim 1, characterized in that: When the optical film layer is an interference cut-off filter film layer, the interference cut-off filter film layer comprises a first high refractive index layer, a first low refractive index layer and a second high refractive index layer which are stacked, and the second high refractive index layer is located on a side of the first high refractive index layer away from the display panel; The optical film thickness of the first high refractive index layer is λ8, the optical film thickness of the first low refractive index layer is λ4, and the optical film thickness of the second high refractive index layer is λ8; λ is the wavelength of the incident light incident on the interference cut-off filter film layer; The thickness of the first high refractive index layer and the second high refractive index layer are both 30 nm to 60 nm, and the thickness of the first low refractive index layer is 90 nm to 120 nm.

3. The method according to claim 1, characterized in that: When the optical film layer is an anti-reflection film layer, the anti-reflection film layer comprises a third high refractive index layer, a second low refractive index layer and a fourth high refractive index layer which are stacked, and the fourth high refractive index layer is located on a side of the third high refractive index layer away from the display panel; The optical film thickness of the third high refractive index layer is λ4, the optical film thickness of the second low refractive index layer is λ4, and the optical film thickness of the fourth high refractive index layer is λ4; λ is the wavelength of the incident light incident on the anti-reflection film layer; The thickness of the third high refractive index layer and the fourth high refractive index layer are both 50 nm to 100 nm, and the thickness of the second low refractive index layer is 90 nm to 120 nm.

4. The method according to claim 1, characterized in that: When the optical film layer is an anti-reflection film layer, the anti-reflection film layer includes a fifth high refractive index layer; or, the anti-reflection film layer includes a fifth high refractive index layer and a third low refractive index layer, and the third low refractive index layer is located on a side of the fifth high refractive index layer away from the display panel; The optical film thickness of the fifth high refractive index layer is λ4, and the optical film thickness of the third low refractive index layer is λ4; λ is the wavelength of the incident light incident on the anti-reflection film layer; The thickness of the fifth high refractive index layer is 50 nm to 100 nm, and the thickness of the third low refractive index layer is 70 nm to 200 nm.

5. A display module, applied to an OLED display panel, wherein the substrate material of the OLED display panel is polyimide, characterized in that: include: Display panel; A reflective layer located on the light-emitting surface of the display panel; wherein the reflective layer has a plurality of hollow regions, and the orthographic projections of the plurality of hollow regions on the base substrate of the display panel overlap with the orthographic projections of the organic light-emitting layer on the base substrate; an optical structure located at a side of the reflective layer away from the display panel; The optical structure includes at least one optical film layer, the optical film layer is configured to enhance the reflectivity of blue light and / or reduce the reflectivity of yellow-green light, and the optical film layer is any one of an interference cut-off filter film layer, an anti-reflection film layer or an anti-reflection film layer; the optical structure is formed on a side of the reflective layer away from the display panel by a deposition process, so that the optical structure includes an optical film layer located in the hollow area and an optical film layer located on a side of the reflective layer away from the substrate; the optical structure is integrated with the reflective layer, and no bubbles are generated between the optical structure and the film layer located below it; A cover plate is formed on a side of the optical structure away from the display panel.

6. The display module according to claim 5, characterized in that: The cover plate covers the reflective layer, and the optical structure is located on the cover plate.

7. The display module according to claim 5, characterized in that: The optical structure is located on the reflective layer, and the cover plate covers the optical structure.

8. A display device, characterized in that: Comprising the display module as claimed in any one of claims 5 to 7.

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