Display module and terminal device

Abstract

Disclosed in embodiments of the present application are a display module and a terminal device. The display module comprises a light emitting functional layer, and a light blocking layer and a light refraction layer that are located in a light exit direction; the light blocking layer comprises an opening; the opening is at least filled with the light refraction layer; the included angle between the side wall of the opening and the bottom surface of the opening is an obtuse angle; and the refractive index of the light refraction layer is greater than that of the light blocking layer. Light is further converged towards the center by means of the refractive index difference between the light refraction layer and the light blocking layer, thereby improving the light emitting efficiency of the front surface.

Description

Display modules, terminal equipment

[0001] This application claims priority to Chinese patent application No. 202410234735.4 filed on February 29, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The embodiments of the present application relate to the field of display technology, and specifically to a display module and a terminal device. Background Art

[0003] Improving the luminous efficiency of OLED devices and reducing power consumption are important requirements for mobile devices. This is usually achieved by providing an organic layer with an opening above the encapsulation layer and filling the opening with a material with a refractive index greater than that of the organic layer to improve the front light extraction efficiency. However, when combining this structure with the polarizer-less (POL-less) process, there are problems with the high complexity of the structure and process. SUMMARY OF THE INVENTION

[0004] Therefore, the existing display module has the technical problem of being unable to achieve high front light extraction efficiency and simplify the structure and process at the same time.

[0005] The embodiments of the present application provide a display module and a terminal device, which can alleviate the technical problem of low front light output efficiency of existing display modules.

[0006] An embodiment of the present application provides a display module, comprising:

[0007] array device layer;

[0008] a light-emitting functional layer, the light-emitting functional layer being arranged above the array device layer, the light-emitting functional layer comprising a plurality of light-emitting layers arranged at intervals;

[0009] an encapsulation layer, the encapsulation layer being arranged on a side of the light-emitting functional layer away from the array device layer;

[0010] a light-blocking layer, the light-blocking layer being disposed on a side of the encapsulation layer away from the array device layer, the light-blocking layer comprising a plurality of light-blocking units disposed at intervals, and openings located between adjacent light-blocking units, the openings being disposed corresponding to the light-emitting layer;

[0011] a light refraction layer, the light refraction layer being arranged on a side of the light blocking layer away from the array device layer, the light refraction layer at least filling the opening;

[0012] a cover plate, the cover plate being arranged on a surface of the light refraction layer away from the array device layer;

[0013] The included angle between the side wall of the opening and the bottom surface of the opening is an obtuse angle, and the refractive index of the light refraction layer is greater than the refractive index of the light blocking layer.

[0014] An embodiment of the present application provides a terminal device, which includes the display module described in the above embodiment, wherein the display module includes:

[0015] array device layer;

[0016] a light-emitting functional layer, the light-emitting functional layer being arranged above the array device layer, the light-emitting functional layer comprising a plurality of light-emitting layers arranged at intervals;

[0017] an encapsulation layer, the encapsulation layer being arranged on a side of the light-emitting functional layer away from the array device layer;

[0018] a light-blocking layer, the light-blocking layer being disposed on a side of the encapsulation layer away from the array device layer, the light-blocking layer comprising a plurality of light-blocking units disposed at intervals, and openings located between adjacent light-blocking units, the openings being disposed corresponding to the light-emitting layer;

[0019] a light refraction layer, the light refraction layer being arranged on a side of the light blocking layer away from the array device layer, the light refraction layer at least filling the opening;

[0020] a cover plate, the cover plate being arranged on a surface of the light refraction layer away from the array device layer;

[0021] The included angle between the side wall of the opening and the bottom surface of the opening is an obtuse angle, and the refractive index of the light refraction layer is greater than the refractive index of the light blocking layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic diagram of a first cross-section of a display module provided by the present application;

[0023] FIG2 is a schematic diagram of a second cross-section of the display module provided by the present application;

[0024] FIG3 is a schematic diagram of a third cross-section of the display module provided in this application.

[0025] Description of reference numerals:

[0026] Modes for Carrying Out the Invention

[0027] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0028] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise expressly limited.

[0029] A display module provided in the present application includes an encapsulation layer, an organic layer, a color filter, a flat layer, and a high-refractive material layer, wherein the organic layer is arranged above the encapsulation layer, the organic layer is provided with a first recessed structure, the color filter is arranged in the recessed structure, the flat layer is arranged on the side of the color filter away from the encapsulation layer, the flat layer has a second recessed structure, and the second recessed structure is aligned with the first recessed structure in the film thickness direction, and the high-refractive material layer is filled in the second recessed structure. On the one hand, the refractive index difference between the high-refractive material layer and the flat layer is utilized to achieve an improvement in the front light extraction efficiency, and on the other hand, the polarizer is eliminated by providing a color filter; however, this solution still has the problems of complex structure and cumbersome process.

[0030] The present application provides another display module that further simplifies the structure and process. It does not require a color filter and uses the glue of the module segment as a high-refractive material layer. It can simplify the structure and process while taking into account the improvement of the front light output efficiency and the integration of depolarizer technology.

[0031] Referring to FIG. 1 , the display module 1 provided in the present application includes an array device layer 10, a light-emitting functional layer 20, an encapsulation layer 30, a light-blocking layer 40, a light-refractive index layer 50, and a cover plate 70. The light-emitting functional layer 20 is disposed above the array device layer 10. The light-emitting functional layer 20 includes a plurality of light-emitting layers 201 disposed at intervals. The encapsulation layer 30 is disposed on a side of the light-emitting functional layer 20 away from the array device layer 10. The light-blocking layer 40 is disposed on a side of the encapsulation layer 30 away from the array device layer 10. The light-blocking layer 40 includes a plurality of light-blocking units 401 disposed at intervals and openings located between adjacent light-blocking units 401. The openings are disposed corresponding to the light-emitting layers 201. The light-refractive layer 50 is disposed on a side of the light-blocking layer 40 away from the array device layer 10. The light-refractive layer 50 at least fills the opening, wherein the angle between the sidewall of the opening and the bottom surface of the opening is an obtuse angle, and the refractive index of the light-refractive layer 50 is greater than the refractive index of the light-blocking layer 40.

[0032] In this embodiment, by filling the light refraction layer 50 at least at the opening of the light-blocking layer 40, the angle between the side wall of the opening and the bottom surface of the opening is set to an obtuse angle, so that the light reflected by the side wall converges toward the center, wherein the refractive index of the light refraction layer 50 is set to be greater than the refractive index of the light-blocking layer 40, so that the light is further converged toward the center, thereby improving the light extraction efficiency of the front side. At the same time, the light refraction layer is provided on the side of the cover plate facing the encapsulation layer, and the light refraction layer can be prepared using existing adhesive materials, which simplifies the process and structure of the display module and alleviates the technical problem of the existing display module 1 that cannot take into account both high light extraction efficiency of the front side and simplified structure and process.

[0033] The technical solution of this application is now described in conjunction with specific embodiments.

[0034] The refractive index, wavelength range, transmittance, thickness, selected materials, etc. of this application are only described based on the best or better implementation methods. Other methods that can meet the process and required conditions should also fall within the scope of protection of the present invention and will not be repeated here.

[0035] Optionally, in some embodiments of the present application, the refractive index of the light refraction layer is n1, and the refractive index of the light blocking layer is n2, wherein n1-n2>0.5.

[0036] Optionally, in some embodiments of the present application, the light refraction layer includes a main body portion and high-refractive particles doped in the main body portion, and the refractive index of the high-refractive particles is greater than the refractive index of the main body portion.

[0037] Optionally, in some embodiments of the present application, the high-refractive particles are made of zirconium oxide.

[0038] Optionally, in some embodiments of the present application, at least one functional film layer is further provided on a side of the light-emitting functional layer away from the array device layer, and the functional film layer has the function of selectively absorbing light of different wavelength bands.

[0039] Optionally, in some embodiments of the present application, the entire surface of the functional film layer is arranged in the light emitting direction.

[0040] Optionally, in some embodiments of the present application, the wavelength band corresponding to the maximum transmittance T1 of the functional film layer is λ1, and the wavelength band corresponding to the minimum transmittance T2 of the functional film layer is λ2, wherein 420 nanometers < λ1 < 780 nanometers, 420 nanometers < λ2 < 780 nanometers, and T1 > 3T2.

[0041] Optionally, in some embodiments of the present application, the functional film layer is one or more layers in the encapsulation layer.

[0042] Optionally, in some embodiments of the present application, the functional film layer is the cover plate, and the cover plate includes at least one of ultra-thin glass and a flexible protective film. The functional film layer is also doped with a dye, and the dye has the function of selectively absorbing light of different wavelengths.

[0043] Optionally, in some embodiments of the present application, the cover plate is a two-layer or multi-layer laminated design, and the cover plate includes at least a first protective layer and a second protective layer. The proportions of the components of the first protective layer and the second protective layer are different, and the transmittance of the first protective layer and the second protective layer for the same color light is also different. The first protective layer and the second protective layer both serve as functional film layers.

[0044] Optionally, in some embodiments of the present application, the light blocking unit is made of a light absorbing material.

[0045] Optionally, in some embodiments of the present application, the light blocking unit is a black matrix, and the light absorbing material is a black light absorbing material.

[0046] Optionally, in some embodiments of the present application, the angle between the side wall of the opening of the light-blocking layer and the bottom surface of the opening is an obtuse angle, and the angle range of the obtuse angle is less than 135 degrees.

[0047] Optionally, in some embodiments of the present application, the thickness range of the light-blocking layer is less than 5 microns, and the thickness range of the light-refractive layer is greater than or equal to 5 microns and less than or equal to 100 microns.

[0048] Optionally, in some embodiments of the present application, an anti-reflection layer is further provided on a side of the light blocking unit away from the array device layer, and a material for preparing the anti-reflection layer may include at least one of molybdenum oxide and titanium oxide.

[0049] Optionally, in some embodiments of the present application, the encapsulation layer further includes a first inorganic layer, an organic layer, and a second inorganic layer, the first inorganic layer is arranged on the side of the light-emitting functional layer away from the array device layer, the organic layer is arranged on the side of the first inorganic layer away from the array device layer, and the second inorganic layer is arranged on the side of the organic layer away from the array device layer, wherein the refractive index of the second inorganic layer is greater than the refractive index of the organic layer, which is greater than the refractive index of the first inorganic layer.

[0050] Optionally, in some embodiments of the present application, the display module further includes a touch layer, the touch layer is arranged on a side of the packaging layer away from the array device layer, and the light blocking layer is arranged on a side of the touch layer away from the array device layer.

[0051] Optionally, in some embodiments of the present application, the light refraction layer is arranged to cover the opening, and a surface of the light refraction layer on a side away from the array device layer is flattened.

[0052] Optionally, in some embodiments of the present application, the light refractive layer is made of a plastic material.

[0053] In one embodiment, the refractive index of the light refraction layer 50 is n1, and the refractive index of the light blocking layer 40 is n2, wherein n1-n2>0.5.

[0054] It is understandable that by further limiting the refractive index of the light refractive layer 50 to be greater than the refractive index of the light blocking layer 40 so that the difference between the two refractive indices is greater than 0.5, the optical performance can be further improved.

[0055] In one embodiment, the light refractive layer 50 includes a main body and high-refractive particles doped in the main body, and the refractive index of the high-refractive particles is greater than the refractive index of the main body.

[0056] It is understandable that the refractive index of the light refractive layer 50 can be made greater than the refractive index of the light blocking layer 40 by doping with high-refractive particles.

[0057] The high-refractive particles may be zirconium oxide, and the high-refractive particles may also have a light-uniformity effect, thereby improving the front light-emitting efficiency and making the light-emitting more uniform.

[0058] In one embodiment, referring to FIG. 2 and FIG. 3 , at least one functional film layer is further provided on a side of the light refraction layer 50 away from the array device layer 10 , and the functional film layer has the function of selectively absorbing light of different wavelength bands.

[0059] It is understandable that by providing a functional film layer to absorb ambient light, the ambient light reflectivity of the overall structure is reduced, thereby replacing the color filter in the prior art and simplifying the production process.

[0060] In this embodiment, a functional film layer is provided to replace the color filter. It is only necessary to attach the entire surface of the functional film layer in the light-emitting direction, without having to prepare different color filter blocks in the color filter through three masks, thereby simplifying the process and reducing costs.

[0061] In one embodiment, the wavelength band corresponding to the maximum transmittance T1 of the functional film layer is λ1, and the wavelength band corresponding to the minimum transmittance T2 of the functional film layer is λ2, wherein 420 nm < λ1 < 780 nm, 420 nm < λ2 < 780 nm, and T1 > 3T2.

[0062] Among them, in the visible light band, the maximum transmittance must be at least 3 times greater than the minimum transmittance to ensure differentiated filtering characteristics for different colors of light and reduce the reflection effect of ambient light.

[0063] In one embodiment, the encapsulation layer 30 can serve as a functional film layer to selectively absorb light of different wavelength bands.

[0064] In this embodiment, one or more layers of the encapsulation layer 30 are used as functional film layers, eliminating the need for additional functional film layers that selectively absorb light of different wavelengths. This simplifies the process and reduces the overall film thickness of the display module 1 .

[0065] In one embodiment, referring to FIG3 , a cover plate 70 is further provided on the side of the light refraction layer 50 away from the array device layer 10 , and the cover plate 70 includes a first protective layer 701 and a second protective layer 702 , wherein the second protective layer 702 is provided on the side of the first protective layer 701 away from the array device layer 10 , wherein the first protective layer 701 and the second protective layer 702 are made of the same material.

[0066] It can be understood that when the cover plate 70 is two-layered, the cover plate 70 includes a first protective layer 701 and a second protective layer 702. The proportions of the components in the first protective layer 701 and the second protective layer 702 are different, and the transmittance of the two for the same color light is also different. The cover plate 70 is set to a two-layer or multi-layer stacked design, and both layers of the cover plate 70 can be used as functional film layers, which can optimize the filtering effect of the cover plate 70 and further reduce the reflection of ambient light.

[0067] It is understandable that it is difficult to adjust a single functional film layer to achieve the desired filtering effect on red light, green light, and blue light. In other words, due to the limitations of materials and proportions, a single functional film layer cannot filter and adjust red light, green light, and blue light well, while two or more functional film layers are more conducive to better filtering and adjusting red light, green light, and blue light.

[0068] In one embodiment, the functional film layer is the cover plate 70, and the cover plate 70 includes at least one of ultra-thin glass and a flexible protective film. The functional film layer is also doped with a dye, and the dye has the function of selectively absorbing light of different wavelengths.

[0069] Among them, the cover plate 70 can be a glass cover plate (Cover Glass, CG) or an ultra-thin glass cover plate (Ultra Thin Glass, UTG). When the display module is a folding display module, the ultra-thin glass cover plate can be an ultra-thin glass cover plate (Ultra Thin Glass, UTG). When the display module is a non-folding display module, the cover plate can be a glass cover plate (Cover Glass, CG).

[0070] Among them, the visible light band ranges from 420 nanometers to 780 nanometers.

[0071] It can be understood that the dye has the characteristic of different transmittances for light in different bands in the visible light band. By adjusting the type, quantity and proportion of the dye, the functional film layer can have a function similar to that of a color filter, filtering out ambient light and its reflected light, thereby reducing the reflection of ambient light.

[0072] In one embodiment, referring to Figures 1, 2, and 3, the light-emitting functional layer includes an anode layer 202, a pixel definition layer 203, a light-emitting layer 201, and a cathode layer 204. The anode layer 202 is arranged above the array device layer 10, and the pixel definition layer 203 is arranged on the side of the anode layer 202 away from the array device layer 10. A light-emitting area is defined between adjacent pixel definition layers 203, and the light-emitting layer 201 is arranged in the light-emitting area.

[0073] The light emitting layer 201 is disposed on a side of the anode layer 202 away from the array device layer 10 .

[0074] The cathode layer 204 is disposed on a side of the light emitting layer 201 away from the array device layer 10 .

[0075] In one embodiment, the light blocking unit 401 is made of a light absorbing material.

[0076] Wherein, the light-absorbing material is a black light-absorbing material.

[0077] The light blocking unit 401 may be a black matrix.

[0078] It is understandable that when the light blocking unit 401 is made of a light-absorbing material, the surface of the black matrix can absorb ambient light and reduce the reflection of ambient light.

[0079] In one embodiment, the included angle between the sidewall of the opening of the light-blocking layer 40 and the bottom surface of the opening is an obtuse angle, and the angle range of the obtuse angle is less than 135 degrees.

[0080] In one embodiment, the thickness of the light blocking layer 40 is less than 5 micrometers, and the thickness of the light refractive layer 50 is greater than or equal to 5 micrometers and less than or equal to 100 micrometers.

[0081] The thickness of the light blocking layer 40 can be 4.5 micrometers, 4 micrometers, 3.5 micrometers, 3 micrometers, 2 micrometers, or 1 micrometer.

[0082] It is understandable that the smaller the thickness of the light-blocking layer 40 is, the better the morphology and filling effect of the light-refractive layer 50 filled thereon will be.

[0083] The thickness of the light refraction layer 50 can be 5 micrometers, 30 micrometers, 50 micrometers, 70 micrometers, or 100 micrometers.

[0084] It is understandable that the greater the thickness of the light refraction layer 50 is, the better the morphology and filling effect of the light refraction layer 50 will be.

[0085] In this embodiment, by limiting the thickness ranges of the light-blocking layer 40 and the light-refractive layer 50 , the morphology and filling effect of the light-refractive layer 50 are improved.

[0086] In one embodiment, an anti-reflection layer is further provided on a side of the light blocking unit 401 away from the array device layer 10 .

[0087] The anti-reflection layer may be made of at least one of molybdenum oxide and titanium oxide.

[0088] It is understandable that a nanoscale periodic protrusion structure can be formed on the surface of the light blocking unit 401 away from the array device layer 10 through an etching process, and the protrusion structure can reduce the reflectivity of ambient light to achieve a low reflection effect.

[0089] In this embodiment, an anti-reflection layer is provided above the light blocking unit 401 to reduce reflection of ambient light.

[0090] In one embodiment, referring to FIG. 2 , the display module 1 further includes a touch layer 60 , which is disposed on a side of the encapsulation layer 30 away from the array device layer 10 , and the light-blocking layer 40 is disposed on a side of the touch layer 60 away from the array device layer 10 .

[0091] The touch layer 60 includes touch electrodes.

[0092] The touch layer 60 is disposed in the display panel, and FIG2 shows an embedded design of the touch layer.

[0093] It should be noted that, as shown in FIG1 , the touch panel of the display module can be designed as an external plug-in, and the touch panel can be arranged on the outside of the cover plate away from the packaging layer.

[0094] In one embodiment, the preparation material of the black matrix may include low-temperature curing photosensitive silver paste.

[0095] The low-temperature curing photosensitive silver paste has at least the characteristics of fast drying speed, low impedance, good adhesion to the substrate, and high photolithography resolution.

[0096] The maximum line width resolution of the low-temperature curing photosensitive silver paste can reach 2.5 microns.

[0097] The components of the low-temperature curing photosensitive silver paste include silver powder, conductive colloid, black resin solvent, photopolymerizer, photoinitiator, adhesion promoter, thickener and leveling agent.

[0098] Wherein, the particle size of the silver powder ranges from 10 nanometers to 200 nanometers.

[0099] The mass fraction of the conductive colloid is 4% to 8%, and the conductive colloid also plays a conductive role.

[0100] In this embodiment, the light-blocking layer 40 is prepared using a low-temperature curing photosensitive silver paste. On the one hand, the light-blocking unit 401 has conductive properties and can be used as a touch electrode. The light-blocking unit 401 can be reused as the touch electrode of the touch layer 60. On the other hand, the light-blocking unit 401 is prepared using a low-temperature curing photosensitive silver paste, which can effectively reduce process abnormalities such as peeling between the touch layer 60 and the light-blocking unit 401, thereby improving the process yield.

[0101] In one embodiment, the encapsulation layer 30 also includes a first inorganic layer, an organic layer, and a second inorganic layer, wherein the first inorganic layer is arranged on the side of the light-emitting functional layer 20 away from the array device layer 10, the organic layer is arranged on the side of the first inorganic layer away from the array device layer 10, and the second inorganic layer is arranged on the side of the organic layer away from the array device layer 10, wherein the refractive index of the second inorganic layer is greater than the refractive index of the organic layer, which is greater than the refractive index of the first inorganic layer.

[0102] The refractive index of the first inorganic layer, the organic layer, and the second inorganic layer are all in the range of 1.2 to 1.9.

[0103] It can be understood that in the light emitting direction, the refractive index of each film layer of the encapsulation layer 30 increases successively, so that the light with a large viewing angle is refracted and converges to the middle. By improving the encapsulation layer 30, the light emitting efficiency of the front is further improved.

[0104] In this embodiment, the refractive index of each film layer is sequentially increased along the light emitting direction, thereby further converging the emitted light and further enhancing the light emitting efficiency at the front side.

[0105] In one embodiment, the display module 1 further includes multiple inorganic barrier layers, and the materials for preparing the inorganic barrier layers can be independently selected from at least one of silicon nitride, silicon oxide, and silicon oxynitride.

[0106] The inorganic barrier layer is used to prevent external water and oxygen from invading the interior of the display module 1 .

[0107] In one embodiment, the light refraction layer 50 may be made of an organic material with high transmittance.

[0108] The light refraction layer 50 may be made of an acrylic material.

[0109] The light refraction layer 50 may be made of a material including but not limited to at least one of silicone and polyurethane.

[0110] The light refraction layer 50 may also be prepared by polymerizing monomers with a relatively high refractive index.

[0111] In one embodiment, the display module 1 further includes a glue layer, and the glue layer is disposed on a side of the light refraction layer 50 away from the array device layer 10 .

[0112] The adhesive layer is used to attach the functional film layer or the protective film layer located on the side of the light refraction layer 50 away from the array device layer 10 to one side of the light refraction layer 50 .

[0113] The adhesive layer may be any one of optical adhesive, double-sided adhesive, and pressure-sensitive adhesive.

[0114] The present application provides a display module with a simpler structure and process. The light refraction layer is prepared by using the glue in the module segment process, and the front light output efficiency can be improved without adding additional glue. At the same time, the present application removes the color filter on the basis of removing the polarizer, and replaces the color filter by providing a functional layer with selective absorption characteristics in the light output direction of the light-emitting layer, thereby further simplifying the process technology and structure of the display module.

[0115] The difference in refractive index between the light refraction layer and the light blocking layer allows light to be further converged toward the center, thereby improving the light extraction efficiency of the front side. At the same time, the light refraction layer is arranged on the side of the cover plate facing the encapsulation layer and can be prepared using existing adhesive materials, thereby simplifying the manufacturing process and structure of the display module and alleviating the technical problem of existing display modules that cannot achieve both high light extraction efficiency from the front side and simplified structure and process.

[0116] The present application also proposes a terminal device, which includes the above-mentioned display module, wherein the terminal device includes but is not limited to a mobile phone, a laptop computer, and a tablet computer.

[0117] The display module provided by the embodiment of the present application includes an array device layer, a light-emitting functional layer, an encapsulation layer, and a light-blocking layer, wherein the light-emitting functional layer is arranged above the array device layer, the light-emitting functional layer includes a plurality of light-emitting layers arranged at intervals, the encapsulation layer is arranged on a side of the light-emitting functional layer away from the array device layer, the light-blocking layer is arranged on a side of the encapsulation layer away from the array device layer, the light-blocking layer includes a plurality of light-blocking units arranged at intervals, and openings located between adjacent light-blocking units, the openings are arranged corresponding to the light-emitting layer, the light-refracting layer is arranged on a side of the light-blocking layer away from the array device layer, the light-refracting layer at least fills the opening, wherein the sidewalls of the openings The angle between the light refraction layer and the bottom surface of the opening is an obtuse angle, and the refractive index of the light refraction layer is greater than the refractive index of the light blocking layer; by filling the light refraction layer at least at the opening of the light blocking layer, the angle between the side wall of the opening and the bottom surface of the opening is set to an obtuse angle, so that the light reflected by the side wall converges toward the center, wherein the refractive index of the light refraction layer is set to be greater than the refractive index of the light blocking layer, so that the light further converges toward the center, thereby improving the light extraction efficiency of the front side. At the same time, the light refraction layer is arranged on the side of the cover plate facing the encapsulation layer, and the light refraction layer can be prepared using existing adhesive materials, which simplifies the process and structure of the display module and alleviates the technical problem that the existing display module cannot achieve high light extraction efficiency from the front side and simplify the structure and process.

[0118] The display module provided by the embodiments of the present application has been described in detail above. Without departing from the spirit and essential points of the present application, those skilled in the art may make various corresponding changes and modifications based on the present application, and such corresponding changes and modifications shall fall within the scope of protection of the claims attached to the present application.

Claims

1. A display module, comprising: array device layer; a light-emitting functional layer, the light-emitting functional layer being arranged above the array device layer, the light-emitting functional layer comprising a plurality of light-emitting layers arranged at intervals; an encapsulation layer, the encapsulation layer being arranged on a side of the light-emitting functional layer away from the array device layer; a light-blocking layer, the light-blocking layer being disposed on a side of the encapsulation layer away from the array device layer, the light-blocking layer comprising a plurality of light-blocking units disposed at intervals, and openings located between adjacent light-blocking units, the openings being disposed corresponding to the light-emitting layer; a light refraction layer, the light refraction layer being arranged on a side of the light blocking layer away from the array device layer, the light refraction layer at least filling the opening; a cover plate, the cover plate being arranged on a surface of the light refraction layer away from the array device layer; The included angle between the side wall of the opening and the bottom surface of the opening is an obtuse angle, and the refractive index of the light refraction layer is greater than the refractive index of the light blocking layer.

2. The display module according to claim 1, wherein: At least one functional film layer is further provided on a side of the light-emitting functional layer away from the array device layer. The functional film layer has the function of selectively absorbing light of different wavelength bands.

3. The display module according to claim 2, wherein: The entire surface of the functional film layer is arranged in the light emitting direction.

4. The display module according to claim 2, wherein: The wavelength band corresponding to the maximum transmittance T1 of the functional film layer is λ1, and the wavelength band corresponding to the minimum transmittance T2 of the functional film layer is λ2. Among them, 420 nanometers < λ1 < 780 nanometers, 420 nanometers < λ2 < 780 nanometers, and T1 > 3T2.

5. The display module according to claim 2, wherein: The functional film layer is one or more layers in the encapsulation layer.

6. The display module according to claim 2, wherein: The functional film layer is the cover plate, and the cover plate includes at least one of ultra-thin glass and a flexible protective film. The functional film layer is further doped with a dye, and the dye has the function of selectively absorbing light of different wavelength bands.

7. The display module according to claim 2, wherein: The cover plate is a two-layer or multi-layer laminated design, and the cover plate includes at least a first protective layer and a second protective layer. The proportions of the components of the first protective layer and the second protective layer are different, and the transmittance of the first protective layer and the second protective layer for the same color light is also different. The first protective layer and the second protective layer both serve as the functional film layer.

8. The display module according to claim 1, wherein: The refractive index of the light refraction layer is n1, and the refractive index of the light blocking layer is n2, wherein n1-n2>0.

5.

9. The display module according to claim 8, wherein: The light refractive layer includes a main body and high-refractive particles doped in the main body, wherein the refractive index of the high-refractive particles is greater than the refractive index of the main body.

10. The display module according to claim 9, wherein: The high-refractive particles are made of zirconium oxide.

11. The display module according to claim 1, wherein: The light blocking unit is made of a light absorbing material.

12. The display module according to claim 11, wherein: The light blocking unit is a black matrix, and the light absorbing material is a black light absorbing material.

13. The display module according to claim 1, wherein: An included angle between a side wall of the opening of the light-blocking layer and a bottom surface of the opening is an obtuse angle, and an angle range of the obtuse angle is less than 135 degrees.

14. The display module according to claim 1, wherein: The thickness of the light-blocking layer is less than 5 micrometers, and the thickness of the light-refractive layer is greater than or equal to 5 micrometers and less than or equal to 100 micrometers.

15. The display module according to claim 1, wherein: An anti-reflection layer is further provided on a side of the light blocking unit away from the array device layer. The anti-reflection layer may be made of at least one of molybdenum oxide and titanium oxide.

16. The display module according to claim 1, wherein: The encapsulation layer also includes a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer is arranged on the side of the light-emitting functional layer away from the array device layer, the organic layer is arranged on the side of the first inorganic layer away from the array device layer, and the second inorganic layer is arranged on the side of the organic layer away from the array device layer, wherein the refractive index of the second inorganic layer is greater than the refractive index of the organic layer and the refractive index of the first inorganic layer.

17. The display module according to claim 1, wherein: The display module further includes a touch layer, which is disposed on a side of the packaging layer away from the array device layer. The light-blocking layer is disposed on a side of the touch layer away from the array device layer.

18. The display module according to claim 1, wherein: The light refraction layer covers the opening, and a surface of the light refraction layer on a side away from the array device layer is flattened.

19. The display module according to claim 1, wherein: The light refraction layer is made of a plastic material.

20. A terminal device comprising the display module according to any one of claims 1 to 19.

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