CN216793195U - Display module and display device - Google Patents
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- CN216793195U CN216793195U CN202122251715.2U CN202122251715U CN216793195U CN 216793195 U CN216793195 U CN 216793195U CN 202122251715 U CN202122251715 U CN 202122251715U CN 216793195 U CN216793195 U CN 216793195U
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Abstract
Some embodiments of the present disclosure provide a display module and a display device. Relates to the technical field of display. A hardness and reduce cost for strengthening display module assembly's luminousness, improvement display module assembly's display effect is used for improving display module assembly's flexible apron simultaneously. The display module assembly includes: the display panel comprises a display panel, and a transparent protective cover plate, an anti-reflection film layer and a friction-resistant layer which are sequentially stacked on the display side of the display panel. According to the display module provided by the disclosure, the transparent protective cover plate, the anti-reflection film layer and the friction-resistant layer are sequentially stacked on the display side of the display panel, and the anti-reflection film layer has high light transmittance and can improve the display effect of the display module; the antifriction layer can improve the wear resistance of display module assembly.
Description
Technical Field
The disclosure relates to the technical field of display, in particular to a display module and a display device.
Background
With the development of display technology, the application field of display devices is very wide, and the requirements for various performances of the screen body are gradually increased. The flexible screen has characteristics such as can buckle, utilizes display device's flexibility, and people can buckle or fold display device to it is convenient to carry and use display device for people. However, the existing flexible folding screen still has many defects, and related electronic products are still immature, so that the problems of low light transmittance, poor friction resistance and the like easily occur in practical use.
SUMMERY OF THE UTILITY MODEL
The display module and the display device are used for enhancing the light transmittance of the display module and improving the display effect of the display module; simultaneously, improve the wear resistance of display module's flexible apron.
In order to achieve the above object, the present disclosure provides the following technical solutions:
in one aspect, some embodiments of the present disclosure provide a display module, including: a display panel; a transparent protective cover plate positioned on the display side of the display panel; the anti-reflection film layer is positioned on one side, far away from the display panel, of the transparent protective cover plate; and the anti-friction layer is positioned on one side of the anti-reflection film layer, which is far away from the transparent protective cover plate.
In some embodiments, the antireflective film layer comprises: at least two first refractive index layers arranged in a stack; and, one second refractive index layer located between each adjacent two first refractive index layers; wherein a refractive index of the first refractive index layer is smaller than a refractive index of the second refractive index layer.
In some embodiments, the material of the first refractive index layer comprises SiO2And MgF2At least one of (1).
In some embodiments, the material of the second refractive index layer comprises TiO2、Ti3O5、Ta2O5、ZrO2And AlN.
In some embodiments, the material of the second index layer comprises Nb2O5And Si3N4At least one of (1).
In some embodiments, the first refractive index layer has a refractive index in a range of 1.3 to 1.6; the range of the refractive index of the second refractive index layer is 1.8-2.4.
In some embodiments, the refractive index of air is n1, the refractive index of the antireflection film layer is n2, and the refractive index of the transparent protective cover plate is n 3; wherein n1 < n2 < n3, and
in some embodiments, the antireflective film layer has a thickness of h; wherein the content of the first and second substances,
λ is the wavelength of visible light of any one color.
In some embodiments, the antireflective film layer has a thickness of 100nm to 200 nm.
In some embodiments, the material of the friction resistant layer comprises a perfluoropolyether polymer.
In some embodiments, the abrasion resistant layer has a thickness of 7nm to 10 nm.
In some embodiments, the display module has a bending region and a non-bending region; the transparent protective cover plate comprises a bent part and a non-bent part; the bending part is at least positioned in the bending area, and the non-bending part is positioned in the non-bending area; the thickness of the bent portion is smaller than that of the non-bent portion.
In some embodiments, the number of the non-bending portions is two, and the bending portion is connected between the two non-bending portions; the surface of the bent part far away from the display panel is flush with the surface of the non-bent part far away from the display panel; the bent portion and the non-bent portion define a bent groove, and an opening of the bent groove faces the display panel.
In some embodiments, the bent portion is thin in the middle and thick in both sides in the arrangement direction of the bent portion and the non-bent portion.
In some embodiments, the display module further comprises: the buffer layer is positioned between the display panel and the transparent protective cover plate, and at least part of the buffer layer is filled in the bending groove.
In some embodiments, the buffer layer completely separates the display panel from the transparent protective cover sheet.
In some embodiments, the transparent protective cover sheet is ultra-thin glass.
In some embodiments, the transparent protective cover has a thickness of 50um to 100 um.
In another aspect, a display device is provided, which includes the display module.
The display module assembly and the display device provided by the disclosure have the following beneficial effects:
according to the display module provided by the disclosure, the transparent protective cover plate, the anti-reflection film layer and the friction-resistant layer are sequentially stacked on the display side of the display panel, wherein the anti-reflection film layer has high light transmittance, so that the display effect of the display module can be improved; the antifriction layer can improve the wear resistance of display module assembly.
The beneficial effects that the display device that this disclosure can realize include at least with the similar beneficial effects of the display module assembly that above-mentioned technical scheme provided, do not describe here in detail.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a block diagram of a display device according to some embodiments of the present disclosure;
FIG. 2 is a block diagram of another display device provided in some embodiments of the present disclosure;
fig. 3 is a structural diagram of a display module according to some embodiments of the disclosure;
FIG. 4 is a light propagation diagram according to some embodiments of the present disclosure;
fig. 5A is a structural diagram of another display module according to some embodiments of the present disclosure;
fig. 5B is a structural diagram of another display module according to some embodiments of the present disclosure;
fig. 6 is a flowchart of a method for manufacturing a display module according to some embodiments of the present disclosure;
FIG. 7 is a flow chart of a method of forming an antireflective coating layer according to some embodiments of the present disclosure;
fig. 8A to 8C are structural diagrams corresponding to steps in a method for manufacturing a display module according to some embodiments of the disclosure.
Detailed Description
Technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided by the present disclosure belong to the protection scope of the present disclosure.
Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic associated with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.
In describing some embodiments, expressions of "coupled" and "connected," along with their derivatives, may be used. For example, the term "connected" may be used in describing some embodiments to indicate that two or more elements are in direct physical or electrical contact with each other. As another example, some embodiments may be described using the term "coupled" to indicate that two or more elements are in direct physical or electrical contact. However, the terms "coupled" or "communicatively coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. The embodiments disclosed herein are not necessarily limited to the contents herein.
Example embodiments are described herein with reference to cross-sectional and/or plan views as idealized example figures. In the drawings, the thickness of layers and regions are exaggerated for clarity. Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, the exemplary embodiments should not be construed as limited to the shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region shown as a rectangle will typically have curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the exemplary embodiments.
Some embodiments of the present disclosure provide a display device 1000, which is not limited to the type of the display device 1000, and may be, for example, an electroluminescent display device or a photoluminescent display device. In the case that the display device 1000 is an electroluminescent display device, the electroluminescent display device may be an Organic Light-Emitting display device (OLED) or a Quantum Dot electroluminescent display device (QLED). In the case where the display device is a photoluminescent display device, the photoluminescent display device may be a quantum dot photoluminescent display device.
The display device 1000 may be a product or a component having any display function, such as a display, a television, a digital photo frame, a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), an in-vehicle computer, a navigator, and a car audio.
Referring to fig. 1, the display device 1000 includes a frame 1, a cover plate 2, a display module 3, a circuit board 4, and other electronic components including a camera.
Wherein, the longitudinal section of frame 1 is the U type, and display module assembly 3, circuit board 4 and including other electronic components such as camera set up in frame 1, and circuit board 4 is located between display module assembly 3 and the frame 1, and apron 2 is located one side that display module assembly 3 kept away from circuit board 4.
In some embodiments, referring to fig. 2, the display device 1000 is a flexible foldable display device. The flexible folding display device includes a display module 3 and a hinge assembly 10.
Wherein, the display module 3 has at least one bendable region; the hinge assembly 10 is used for bending the display module 3 in the bendable region, so as to fold and bend the display module 3.
The Flexible folding display device may further include a source driver chip, an FPC (Flexible Printed Circuit), a PCB (Printed Circuit Board), and other electronic components.
Some embodiments of the disclosure provide a display module 3, where the display module 3 can be applied to the display device 1000, and certainly, the display module 3 can also be applied to other display devices, which is not limited in this disclosure.
It can be understood that, when the display module 3 is applied to the flexible folding display device, the display module 3 is a flexible folding display module.
Referring to fig. 3, the display module 3 includes a display panel 31, a transparent protective cover 32, an anti-reflection film layer 33, and a friction-resistant layer 34.
Among them, the display panel 31 may be: an Organic Light Emitting Diode (OLED) display panel; a Quantum Dot Light Emitting Diodes (QLED) display panel, etc., which is not limited in this disclosure.
In some examples, the display panel 31 may include a substrate and a plurality of subpixels P of a plurality of subpixels on one side of the substrate, each of the subpixels P including a pixel driving circuit and a light emitting device, and the light emitting device may be on one side of the pixel driving circuit away from the substrate and electrically connected to the pixel driving circuit. The pixel driving circuit is coupled to one gate scanning signal line and one data signal line. The pixel driving circuit transmits the data signal transmitted by the data signal line to the light emitting device under the control of the gate scanning signal transmitted by the gate scanning signal line, thereby driving the light emitting device to emit light.
The transparent protective cover 32 is disposed on the display side of the display panel 31, and the transparent protective cover 32 serves as a surface structure of the display module 3, so as to play a certain supporting effect and protect structures such as light emitting devices in the display panel 31 below the transparent protective cover from being damaged.
The antireflection film layer 33 is disposed on a side of the transparent protective cover 32 away from the display panel 31. Light emitted by the light emitting devices in the display panel 31 is emitted through the antireflection film layer 33.
It will be appreciated that the antireflective coating layer is a surface optical coating that increases the transmission of light at the surface by reducing reflected light. The antireflection film layer utilizes the principle of light interference to enable light reflected by the front surface and the back surface of the film to interfere to act.
The types of antireflection film layer 33 include a plurality of types, and may be selected according to actual needs, for example, antireflection film layer 33 may be formed as a single layer, a double layer, or a multilayer.
The anti-friction layer 34 is disposed on a side of the antireflection film layer 33 away from the transparent protective cover plate 32.
In the display module 3 provided in some embodiments of the present disclosure, on one hand, since the transparent protective cover plate 32 is provided with the antireflection film layer 33 on the side away from the display panel 31, the antireflection film layer 33 itself has a higher light transmittance, which can improve the display effect of the display module 3; on the other hand, the anti-friction layer 34 is disposed on the side of the anti-reflection film layer 33 away from the transparent protective cover plate 32, so that the wear resistance of the display module 3 can be improved.
In some embodiments, referring to FIG. 4, when the refractive index of air is n1, the refractive index of the anti-reflection film layer is n2, and the refractive index of the transparent protective cover plate is n3, n1 < n2 < n3, and
in this case, antireflection film layer 33 may cause interference cancellation of light rays of some colors, for example: a portion of the light L of a certain color is reflected on the upper surface of the antireflection film layer 33, resulting in a light a 1. The other part of the light is transmitted into the antireflection film layer 33, reflected by the lower surface of the antireflection film layer 33, and finally emitted from the upper surface of the antireflection film layer 33 to obtain a light ray a 2. The light ray a1 and the light ray a2 have odd-numbered wave path difference of half wavelength of the light ray of the color by the antireflection film layer 33, so that peaks and valleys of the light rays a1 and a2 meet in the interference, and the amplitude value becomes zero.
The light L of a certain color may be any visible light. Visible light is the portion of the electromagnetic spectrum that can be perceived by the human eye, and the range of electromagnetic waves that can be perceived by the human eye is typically 400nm to 760 nm. Still others can perceive electromagnetic waves having wavelengths between about 380nm and 780 nm. The visible light of each color corresponds to different wavelength ranges, for example, the wavelength range corresponding to violet light is 400nm to 450nm, the wavelength range corresponding to blue light is 450nm to 480nm, the wavelength range corresponding to green light is 480nm to 490nm, the wavelength range corresponding to blue light is 490nm to 500nm, the wavelength range corresponding to green light is 500nm to 560nm, the wavelength range corresponding to yellow-green light is 560nm to 580nm, the wavelength range corresponding to yellow light is 580nm to 610nm, the wavelength range corresponding to orange light is 610nm to 650nm, and the wavelength range corresponding to red light is 650nm to 760 nm.
Interference, i.e., the phenomenon in which two or more rows of waves overlap in space to form a new waveform by superposition. Conditions of interference: the vibration frequencies of the two light waves are the same, and the two light waves have a fixed phase difference at the meeting point. The interference is destructive, that is, in the interference of light, the peaks and the troughs of two light waves meet, and the amplitude is equal to zero.
In this example, the antireflection film layer 33 is provided, and the refractive index n2 of the antireflection film 33 is greater than the refractive index n1 of air, and the refractive index n2 of the antireflection film 33 is smaller than the refractive index n3 of the transparent protective cover plate, and the requirement is met
Thereby can make partial colour light interference cancel, reduce reflection light, increase the energy of transmitted light, can also avoid display module assembly 3's the problem that the display screen appears the colour cast.
In some embodiments, the antireflective film layer has a thickness h. Wherein the content of the first and second substances,
λ may be the wavelength of any one of the above colors of visible light.
It can be understood that the refractive index n2 of the antireflection film 33 is greater than the refractive index n1 of air, and the refractive index n2 of the antireflection film 33 is less than the refractive index n3 of the transparent protective cover plate, which satisfies the requirement
And the thickness of the antireflection film layer 33 is h,
during the process, the normal incident light with the wavelength of lambda can be completely transmitted, and the intensity of the reflected light is reduced, so that the intensity of the transmitted light of the display module 3 is increased, and the display effect of the display module 3 is improved.
In some embodiments, as shown in fig. 5A and 5B, antireflection film layer 33 includes at least two first refractive index layers 331 arranged in a stack, and one second refractive index layer 332 between each adjacent two first refractive index layers 331. The refractive index of the second refractive index layer 332 is greater than that of the first refractive index layer 331.
In some examples, the antireflection film layer 33 includes a first refractive index layer 331, a second refractive index layer 332, and a first refractive index layer 331, which are sequentially stacked, as shown in fig. 5A. In other examples, antireflection film layer 33 includes a first refractive index layer 331, a second refractive index layer 332, and a first refractive index layer 331, which are stacked in this order, as shown in fig. 5B. In still other examples, antireflection film layer 33 may include a first refractive index layer 331, a second refractive index layer 332, a first refractive index layer 331, and a first refractive index layer 331, which are stacked in this order. Of course, the arrangement of the first refractive index layer 331 and the second refractive index layer 332 in the present disclosure is not limited thereto.
When the antireflection film layer 33 comprises at least two first refractive index layers 331 arranged in a stacked manner and one second refractive index layer 332 arranged between every two adjacent first refractive index layers 331, by adjusting the refractive index and the thickness of each first refractive index layer 331 and the refractive index and the thickness of each second refractive index layer 332, the refractive index n2 of the whole antireflection film layer 33 can be made to be larger than the refractive index n1 of air, and the refractive index n2 of the antireflection film 33 is made to be smaller than the refractive index n3 of the transparent protective cover plate 32, so that the requirements of meeting the requirements of the whole antireflection film layer 33 are met
And the thickness of the antireflection film layer 33 is h,
in this example, the outermost layer of the antireflection film layer 33 is the first refractive index layer 331 with a low refractive index, so that more light rays irradiated from the side of the antireflection film layer 33 away from the transparent protective cover plate 32 to the antireflection film layer 33 can be incident into the antireflection film layer 33; meanwhile, the antireflection film layer 33 includes a structure in which the first refractive index layer 331 with a low refractive index and the second refractive index layer 332 with a high refractive index are overlapped with each other, so that interference of part of color light rays can be cancelled by using a multi-beam interference principle, reflected light rays can be reduced, energy of transmitted light can be increased, and normal incident light with a wavelength of λ can be completely transmitted at least.
In some embodiments, the refractive index of the first refractive index layer 331 ranges from 1.3 to 1.6; the refractive index of the second refractive index layer 332 is in a range of 1.8 to 2.4.
The material of the first refractive index layer 331 is not limited, and the refractive index of the first refractive index layer 331 is preferably 1.3 to 1.6. Illustratively, the material of the first refractive index layer 331 may include silicon dioxide (SiO)2) Or magnesium fluoride (MgF)2). At this time, the refractive index of the first refractive index layer 331 is relatively small.
The material of the second refractive index layer 332 is not limited, and the refractive index of the second refractive index layer 332 is 1.8 to 2.4.
In some examples, the material of the second refractive index layer 332 may include titanium dioxide (TiO)2) Titanium oxide (Ti)3O5) Tantalum pentoxide (Ta)2O5) Zirconium dioxide (ZrO)2) And aluminum nitride (AlN). At this time, the refractive index of the second refractive index layer 332 is relatively large, and the structure in which the first refractive index layer 331 having a low refractive index and the second refractive index layer 332 having a high refractive index overlap with each other can cancel interference of part of color light by using the principle of multi-beam interference, reduce reflected light, and increase energy of transmitted light.
In yet other examples of the present invention,the material of second refractive index layer 332 may include niobium pentoxide (Nb)2O5) And silicon nitride (Si)3N4) At least one of (1). At this time, on one hand, the refractive index of the second refractive index layer 332 is relatively large, and the structure in which the first refractive index layer 331 having a low refractive index and the second refractive index layer 332 having a high refractive index overlap with each other can cancel interference of part of color light by using the principle of multi-beam interference, reduce reflected light, and increase energy of transmitted light; on the other hand, since Nb2O5And Si3N4The molecular space structure is stable, and the anti-reflection film layer 33 has high hardness, so that the display module 3 is not easy to break when being impacted by external force, and the user experience is improved.
In some embodiments, antireflective film layer 33 has a thickness h in the range of 100nm to 200 nm. For example, 100nm, 110nm, 120nm, 130nm, 140nm, 150nm, 160nm, 170nm, 180nm, 190nm, 200nm, etc.
In this embodiment, when the thickness of the anti-reflection film layer 33 is equal to or close to 100nm, the light transmittance of the anti-reflection film layer 33 is relatively large, and the thickness of the display module 3 is relatively thin, which is beneficial to making the display device light and thin, and at the same time, the surface hardness of the display module 3 can be improved to a certain extent, so that the display module 3 is not easy to break when being impacted by an external force. When the thickness of the anti-reflection film layer 33 is equal to or close to 200nm, the anti-reflection film layer 3 may be a structure in which the first refractive index layer 331 with a low refractive index and the second refractive index layer 332 with a high refractive index overlap each other, and the multi-beam interference principle is utilized to cancel interference of part of color light, reduce reflected light, increase energy of transmitted light, and better ensure the surface hardness of the display module 3, so that the display module 3 is not easily broken when being impacted by external force.
In some embodiments, the material of the friction resistant layer 34 may include a perfluoropolyether polymer. The perfluoropolyether polymer has good hydrophobicity and oleophobic property, can make the plane of antifriction layer 34 can satisfy 2500 times water droplet angle 110, has strengthened display module 3's surface hardness, can also make display module 3 have better antifouling effect, has strengthened the gentle smooth touch of glass screen and has felt.
It should be noted that: the water drop angle is the included angle between the gas-liquid phase interface and the solid-liquid phase interface at the solid, liquid and gas three-phase interface. The water drop angle is a scale for displaying the humidity and the hydrophilicity of the surface of an object, and a low water drop angle indicates that the humidity is high or the hydrophilicity is strong, so that the surface is easy to stick. A high water drop angle indicates low humidity or weak hydrophilicity, and has a good water-repellent effect and oil-repellent effect.
In some embodiments, the rub-resistant layer 34 is 7nm to 10nm thick. For example, 7nm, 8nm, 9nm, 10nm, etc.
In this embodiment, when the thickness of the friction-resistant layer 34 is equal to or close to 7nm, a better light transmittance of the display module 3 can be ensured, and the plane of the friction-resistant layer 34 satisfies a water drop angle of 110 ° for 2500 times, so that the display module 3 has a better antifouling effect, a smooth touch feeling of a glass screen is enhanced, and the thickness of the display module 3 is thinner, which is beneficial to thinning of a display device, and simultaneously can improve the surface hardness of the display module 3 to a certain extent, so that the display module 3 is not easy to break when being impacted by an external force; when the thickness of antifriction layer 34 equals or approaches to 10nm, can guarantee the better luminousness of display module assembly 3 to a certain extent, and the plane of antifriction layer 34 satisfies 2500 times water droplet angle 110, can make display module assembly 3 have better antifouling effect, has strengthened the silky touch of glass screen and has felt, improvement display module assembly 3's that simultaneously can be better surface hardness to make display module assembly 3 when receiving external force and assault, also be difficult for breaking.
In some embodiments, with reference to fig. 5B, the display module 3 has a bending region a1 and a non-bending region a 2.
Correspondingly, the transparent protective cover 32 includes a bent portion 321 and a non-bent portion 322. The bending portion 321 is at least located in the bending region a1, and the non-bending portion 322 is located in the non-bending region a 2; the thickness of the bent portion 321 is smaller than that of the non-bent portion 322.
The "bending portion 321 at least in the bending region a 1" includes: the bent portion 321 is located entirely at the bent region a1, and the bent portion 321 is located in other regions than the bent region a 1.
In this example, the bending performance of the bending region a1 is improved by thinning the portion of the transparent protective cover 32 located at the bending region a 1.
In some embodiments, with continued reference to fig. 5B, the number of the non-bent portions 322 is two, the bent portion 321 is connected between the two non-bent portions 322, a surface of the bent portion 321 away from the display panel 31 is flush with a surface of the non-bent portion 322 away from the display panel 31, the bent portion 321 and the non-bent portion 322 define a bent groove 323, and an opening of the bent groove 323 faces the display panel 31. By the design, the bending performance of the bending region A1 can be improved, the flatness of the subsequently prepared antireflection film layer 33 can be ensured, and the good light transmittance of the antireflection film layer 33 can be ensured.
In some embodiments, with continued reference to fig. 5B, in the arrangement direction of the bent portion 321 and the non-bent portion 322, the bent portion 321 is thin in the middle and thick at two sides. On this basis, the cross-sectional shape of the bending groove 323 defined by the bending portion 321 and the non-bending portion 322 in the thickness direction of the display module 3 may be a partial circle (e.g., a half or quarter circle cut in the radial direction) or a partial ellipse (e.g., a half or quarter ellipse cut in the radial direction).
In some embodiments, with reference to fig. 5B, the display module 3 further includes: a buffer layer 35 located between the display panel 31 and the transparent protective cover 32, wherein at least a portion of the buffer layer 35 is filled in the bending groove 323. Through setting up buffer layer 35, can support transparent protection apron 32, can improve transparent protection apron 32's shock resistance, it is safer.
In some embodiments, with continued reference to fig. 5B, the buffer layer 35 completely separates the display panel 31 from the transparent protective cover 32.
By the design, a better buffering effect can be achieved.
The material of the buffer layer 35 may include at least one of Polymer (Polymer), transparent PI (Polyimide), or PET (Polyethylene terephthalate). Of course, the material of the buffer layer 35 is not limited to the above-described material, and may be a transparent material capable of performing a buffering function.
In some embodiments, the display module 3 further includes a Hard coating layer (hardened coating) disposed on a side of the buffer layer 35 away from the transparent protective cover 32, which may further increase the hardness of the screen surface of the display module 3.
In some embodiments, the display module 3 further includes a polarization layer disposed on the display side of the display panel 32, an OCA (Optical Clear Adhesive) may be disposed between the display panel 32 and the polarization layer for adhesion, and an OCA (Optical Clear Adhesive) may be disposed between the polarization layer and the buffer layer 35 for adhesion.
For example, the type of the polarizing layer may be a conventional external polarizer, or may also be coe (color film on ncappation, i.e., a color film is directly formed on the encapsulation layer), instead of the external polarizer. The polarized light layer can prevent reflected light of external environment light from being emitted out of the panel, so that the watching effect of a user is improved.
In some embodiments, the transparent protective cover 32 is Ultra-Thin Glass (Ultra Thin Glass: UTG). Therefore, on one hand, the depth of the screen crease of the display module 3 is improved, and on the other hand, the hardness of the screen surface of the display module 3 is greatly improved.
In this embodiment, the transparent protective cover 32 is made of ultra-thin glass, an anti-reflection film layer 33 and a friction-resistant layer 34 are sequentially formed on one side of the transparent protective cover 32 away from the display panel 31, on one hand, the manufacturing cost is saved, on the other hand, the anti-reflection film layer 33 has high light transmittance, the display effect of the display module 3 can be improved, the anti-reflection film layer 33 includes at least two first refractive index layers 331 stacked and a second refractive index layer 332 located between every two adjacent first refractive index layers 331, and the second refractive index layer 332 includes niobium pentoxide (Nb) with a relatively stable molecular space structure (Nb space structure)2O5) And silicon nitride (Si)3N4) In this case, the antireflection film layer 33 may have a high hardness of 9H, and the abrasion-resistant layer 34 may be selected to have a good hydrophobicityThe perfluoropolyether polymer of nature and oleophobic ability still can make display module 3 have better antifouling effect.
In some embodiments, the transparent protective cover 32 has a thickness of 50um to 100 um. Such as 50um, 60um, 70um, 80um, 90um, 100um, etc.
In this embodiment, when the thickness of the transparent protective cover 32 is equal to or close to 50um, the transparent protective cover has a higher bending performance, and the thickness of the display module 3 is thinner, which is beneficial to the thinning of the display device, and can ensure the hardness of the screen surface of the display module 3 to a certain extent; when the thickness of transparent protection apron 32 equals or approaches to 100um, improved display module assembly 3's bending property to a certain extent, can also guarantee that display module assembly 3's the hardness on screen surface is great simultaneously.
In some embodiments, a Hard coating layer (hardened coating) is formed on an Ultra-Thin Glass (Ultra Thin Glass: UTG), or an Optical Clear Adhesive (OCA) layer, a transparent Polyimide (CPI) layer, and a Hard coating layer (hardened coating) are sequentially formed on an Ultra-Thin Glass (Ultra Thin Glass: UTG) to increase the surface strength thereof.
Referring to fig. 6, the present disclosure further provides a method for manufacturing the display module 3, which is used to manufacture the display module 3. The manufacturing method of the display module 3 includes steps S1-S3.
S1: a transparent protective cover is formed on the display side of the display panel.
In this step, as shown in fig. 8A. The transparent protective cover 32 may be the above-mentioned ultra-thin glass UTG.
S2: and forming an antireflection film layer on one side of the transparent protective cover plate, which is far away from the display panel.
In this step, as shown in fig. 8B. The types of antireflection film layer 33 include a plurality of types, and may be selected according to actual needs, for example, antireflection film layer 33 may be formed as a single layer, a double layer, or a multilayer.
S3: and forming a friction-resistant layer on one side of the antireflection film layer, which is far away from the transparent protective cover plate.
In this step, as shown in fig. 8C. The material of the friction-resistant layer 34 includes a perfluoropolyether polymer.
The preparation method of the display module 3 provided in some embodiments of the present disclosure may be used to prepare the display module 3 in any of the embodiments, where the transparent protective cover 32, the antireflection film layer 33, and the anti-friction layer 34 are sequentially formed on the display side of the display panel 31 of the display module 3, and on one hand, since the antireflection film layer 33 itself has a higher light transmittance, the display effect of the display module 3 may be improved; on the other hand, through setting up antifriction layer 34, not only can improve display module assembly 3's wear resistance, moreover, antifriction layer 34 chooses for use the perfluoropolyether polymer that has fine hydrophobicity and oleophobic nature, can also make display module assembly 3 have better antifouling effect.
In some embodiments, antireflection film layer 33 includes at least two first refractive index layers 331 disposed in a stack, and one second refractive index layer 332 between each adjacent two first refractive index layers 331.
The arrangement of the first refractive index layer 331 and the second refractive index layer 332 can refer to the foregoing embodiments, and will not be described herein.
When the antireflection film layer 33 includes a first refractive index layer 331, a second refractive index layer 332, and a first refractive index layer 331 stacked in this order, referring to fig. 7, the step of forming the antireflection film layer 33 specifically includes steps S100 to S300.
S100: a first refractive index layer 331 is formed on the transparent protective cover 32 on the side away from the display panel 31.
S200: a second refractive index layer 332 is formed on the side of the first refractive index layer 331 away from the transparent protective cover 32.
S300: the second first refractive index layer 331 is formed on a side of the second refractive index layer 332 away from the first refractive index layer 331.
Wherein the number of layers of the first refractive index layer 331 is one more than that of the second refractive index layer 332; the refractive index of the first refractive index layer 331 is smaller than that of the second refractive index layer 332.
In this example, the outermost layer of the antireflection film layer 33 is the first refractive index layer 331 with a low refractive index, so that more light rays irradiated from the side of the antireflection film layer 33 away from the transparent protective cover 32 to the antireflection film layer 33 can be incident into the antireflection film layer 33; meanwhile, since the antireflection film layer 33 includes a structure in which the first refractive index layer 331 having a low refractive index and the second refractive index layer 332 having a high refractive index overlap with each other, a multi-beam interference principle can be used to cancel interference of part of color light, reduce reflected light, and increase energy of transmitted light.
In summary, the method for manufacturing the display module 3 according to some embodiments of the present disclosure may be used to manufacture the display module 3 according to any of the embodiments, and the display module 3 may be applied to the display device 1000, for example, a flexible folding display device. The transparent protective cover 32 in the display module 3 may be made of ultra-thin glass, an anti-reflection film layer 33 and a friction-resistant layer 34 are sequentially formed on one side of the transparent protective cover 32 away from the display panel 31, on one hand, the manufacturing cost is saved, on the other hand, the anti-reflection film layer 33 has high light transmittance, the display effect of the display module 3 can be improved, the anti-reflection film layer 33 comprises at least two first refractive index layers 331 arranged in a stacked manner, and one second refractive index layer 332 located between every two adjacent first refractive index layers 331, and the second refractive index layer 332 comprises niobium pentoxide (Nb) with a stable molecular space structure (Nb space structure)2O5) And silicon nitride (Si)3N4) In the meantime, the anti-reflection film layer 33 has high hardness which can reach 9H, and the anti-friction layer 34 selects a perfluoropolyether polymer with good hydrophobicity and oleophobicity, so that the display module 3 has a good antifouling effect.
The above description is only an embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.
Claims (16)
1. The utility model provides a display module assembly, its characterized in that, display module assembly includes:
a display panel;
a transparent protective cover plate positioned on the display side of the display panel;
the anti-reflection film layer is positioned on one side, far away from the display panel, of the transparent protective cover plate; and
and the anti-friction layer is positioned on one side of the anti-reflection film layer, which is far away from the transparent protective cover plate.
2. The display module of claim 1, wherein the antireflective film layer comprises:
at least two first refractive index layers arranged in a stack; and the combination of (a) and (b),
a second refractive index layer between each adjacent two of the first refractive index layers;
wherein a refractive index of the first refractive index layer is smaller than a refractive index of the second refractive index layer.
3. The display module of claim 2,
the range of the refractive index of the first refractive index layer is 1.3-1.6;
the range of the refractive index of the second refractive index layer is 1.8-2.4.
4. The display module according to any one of claims 1-3,
the refractive index of air is n1, the refractive index of the antireflection film layer is n2, and the refractive index of the transparent protective cover plate is n 3;
wherein n1 < n2 < n3, and
5. the display module of claim 4,
the thickness of the anti-reflection film layer is h;
wherein the content of the first and second substances,
λ is the wavelength of visible light of any one color.
6. The display module according to any one of claims 1 to 3,
the thickness of the antireflection film layer is 100 nm-200 nm.
7. The display module according to any one of claims 1 to 3,
the material of the friction resistant layer includes a perfluoropolyether polymer.
8. The display module according to any one of claims 1 to 3,
the thickness of the friction-resistant layer is 7 nm-10 nm.
9. The display module according to any one of claims 1 to 3, wherein the display module has a bending region and a non-bending region;
the transparent protective cover plate comprises a bent part and a non-bent part; the bending part is at least positioned in the bending area, and the non-bending part is positioned in the non-bending area; the thickness of the bent portion is smaller than that of the non-bent portion.
10. The display module of claim 9,
the number of the non-bending parts is two, and the bending part is connected between the two non-bending parts;
the surface of the bent part far away from the display panel is flush with the surface of the non-bent part far away from the display panel;
the bent portion and the non-bent portion define a bent groove, and an opening of the bent groove faces the display panel.
11. The display module of claim 10,
in the arrangement direction of the bent portion and the non-bent portion, the bent portion is thin in the middle and thick at two sides.
12. The display module according to claim 10 or 11, further comprising:
the buffer layer is positioned between the display panel and the transparent protective cover plate, and at least part of the buffer layer is filled in the bending groove.
13. The display module of claim 12,
the buffer layer completely separates the display panel from the transparent protective cover plate.
14. The display module according to any one of claims 1 to 3,
the transparent protective cover plate is made of ultrathin glass.
15. The display module according to any one of claims 1 to 3,
the thickness of the transparent protective cover plate is 50 um-100 um.
16. A display device, comprising:
the display module according to any one of claims 1 to 15.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115083277A (en) * | 2022-06-22 | 2022-09-20 | 合肥维信诺科技有限公司 | Display module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115083277A (en) * | 2022-06-22 | 2022-09-20 | 合肥维信诺科技有限公司 | Display module and display device |
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