Display device

Abstract

The utility model discloses a display device, which comprises a cover plate and a display module, and is characterized in that the cover plate comprises a first sub-part and a second sub-part arranged around the first sub-part; the display module is arranged on one side of the cover plate, the display module comprises a display area, the part, located in the display area, of the display module is provided with an open hole in a penetrating mode, and at least part of the first sub-part is exposed out of the open hole; the average content of sodium ions in the first sub-part is less than the average content of sodium ions in the second sub-part. According to the display panel, the phenomenon that the visual effect is yellowish in the hole opening area can be avoided while the transmittance of the hole opening area is ensured to be qualified, and the display effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display device. BACKGROUND

[0002] In recent years, microcrystalline glass is widely used in mobile phones and tablets due to its high modulus, anti-falling and scratch resistance. Microcrystalline glass, also known as ceramic glass, is a kind of polycrystalline solid material containing glass phase and microcrystalline phase obtained by controlling crystallization during heating process of base glass with specific composition. The network structure of the glass is destroyed by the crystal, and the sodium ions (Na + ) added in the chemical strengthening process are more likely to migrate to the surface of the glass, and the sodium ions on the surface of the microcrystalline glass react with water to generate sodium silicate (Na2SiO4) and silicon hydroxide (Si(OH)4) in a high temperature and high humidity environment. The reaction product, silicon hydroxide, is a polar molecule that can polarize the surrounding water molecules and be adsorbed around itself to form a layer of silica gel (Si(OH)4·nH2O). Most of the silica gel is adsorbed on the surface of the glass to form a thin film, which will cause the transmittance of the open hole area (O-Cut) of the display device to be unqualified and affect the display effect when the microcrystalline glass is used as the cover plate of the display device.

[0003] Therefore, it is necessary to provide a new technical scheme to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a display device that can improve the display effect.

[0005] To solve the above problems, the technical scheme of the present application is as follows:

[0006] The present application provides a display device, comprising:

[0007] a cover plate, comprising a first sub-part and a second sub-part arranged around the first sub-part; and

[0008] a display module arranged on one side of the cover plate, the display module comprising a display area, and a part of the display module located in the display area is provided with an opening hole, and the opening hole exposes at least part of the first sub-part;

[0009] wherein the average content of sodium ions in the first sub-part is less than the average content of sodium ions in the second sub-part.

[0010] In an embodiment of the present application, the difference between the weight percentage of sodium ions in the second sub-part and the weight percentage of sodium ions in the first sub-part is greater than 0.2wt%.

[0011] In an embodiment of the present application, the average content of potassium ions in the first sub-portion is less than the average content of potassium ions in the second sub-portion.

[0012] In an embodiment of the present application, the display device further comprises a first film layer covering a surface of the first sub-portion, the display module covering a surface of the second sub-portion, and the aperture exposing at least part of the first film layer.

[0013] In an embodiment of the present application, the first film layer has a thickness in a range from 2 nm to 10 nm, and the first film layer is a single-layer transparent film layer or a double-layer transparent film layer.

[0014] In an embodiment of the present application, the first film layer is a double-layer transparent film layer, and the first film layer comprises:

[0015] a silicon oxide layer disposed on one side of the cover plate; and

[0016] a fluoride layer disposed on a side of the silicon oxide layer away from the cover plate;

[0017] wherein the aperture exposes at least part of the fluoride layer.

[0018] In an embodiment of the present application, the first film layer is disposed in the aperture.

[0019] In an embodiment of the present application, the number of the apertures is plural, at least one of the apertures is configured to mount an under-screen camera, at least one of the apertures is configured to mount an infrared sensor, and at least one of the apertures is configured to mount an ambient light sensor.

[0020] In an embodiment of the present application, the display module comprises:

[0021] an optical adhesive layer disposed on one side of the cover plate;

[0022] a polarizer disposed on a side of the optical adhesive layer away from the cover plate;

[0023] a display panel disposed on a side of the polarizer away from the optical adhesive layer;

[0024] a back plate disposed on a side of the display panel away from the polarizer; and

[0025] a heat dissipation layer disposed on a side of the back plate away from the display panel;

[0026] wherein the aperture penetrates the optical adhesive layer, the polarizer, the display panel, the back plate, and the part of the heat dissipation layer located in the display area.

[0027] In an embodiment of the present application, the first film layer has a thickness less than that of the optical adhesive layer.

[0028] In the present application, the cover plate includes a first sub-portion and a second sub-portion. The first sub-portion is exposed to the opening and is provided corresponding to the opening region of the display device. The present application can shield the first sub-portion before chemical strengthening, thereby reducing the sodium ion exchange on the surface of the first sub-portion. After chemical strengthening, the average content of sodium ions in the first sub-portion is less than that in the second sub-portion due to the reduced sodium ion exchange on the surface of the first sub-portion. Since the average content of sodium ions in the first sub-portion is low, the reaction rate of sodium ions on the surface of the first sub-portion with water is reduced, thereby reducing the generation rate of silicic acid gel on the surface of the first sub-portion, ensuring the transmittance of the opening region of the display device to be qualified, and improving the display effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of a first embodiment of the display device of the present application;

[0030] Figure 2 is another schematic view of the first embodiment of the display device of the present application;

[0031] Figure 3 is a schematic view of a second embodiment of the display device of the present application;

[0032] Figure 4 is another schematic view of the second embodiment of the display device of the present application. DETAILED DESCRIPTION

[0033] The meanings of the terms used in the present specification and claims correspond to the meanings commonly understood by those of ordinary skill in the art to which the present application pertains. The terms used in the present specification and claims are only for the purpose of facilitating the description and understanding of the present application, and are not intended to limit the present application to the narrow meanings of the specific terms used in the specification and claims.

[0034] The present application provides a display device 100. The display device 100 can be a mobile phone, a tablet computer, an e-reader, an electronic display screen, a notebook computer, an augmented reality (AR) \ virtual reality (VR) device, a media player, a wearable device, a digital camera, a car navigation device, etc.

[0035] The display device 100 includes a cover plate 10 and a display module 20. The display module 20 includes a display panel 23.

[0036] Optionally, the display panel 23 can be a liquid crystal display panel 23 (LCD), the display panel 23 can also be a micro light emitting diode (Micro LED) display panel 23, the display panel 23 can also be a mini light emitting diode (Mini LED) display panel 23, and the display panel 23 can also be an organic light emitting diode (OLED) display panel 23.

[0037] Optionally, in an embodiment, the display panel in the display module is a liquid crystal display panel. The liquid crystal display panel includes an array substrate, a liquid crystal layer, and a counter substrate which are arranged in a stack. The display module further includes a backlight module, a first polarizer, a second polarizer, and an optical adhesive layer. The optical adhesive layer is arranged between the cover plate and the liquid crystal display panel. The first polarizer is arranged between the optical adhesive layer and the liquid crystal display panel. The backlight module is arranged on a side of the liquid crystal display panel away from the cover plate, and the backlight module is arranged towards the liquid crystal display panel. The second polarizer is arranged between the backlight module and the liquid crystal display panel. The opening penetrates the optical adhesive layer, the first polarizer, the liquid crystal display panel, the second polarizer, and the part of the backlight module located in the display area.

[0038] Optionally, please refer to Figure 1 In another embodiment, the display panel 23 in the display module 20 is one of a micro light emitting diode display panel 23, a mini light emitting diode display panel 23, and an organic light emitting diode display panel 23. The above three display panels 23 are active light emitting display panels 23, and do not need to be provided with a backlight module. The display module 20 further includes an optical adhesive layer 21, a polarizer 22, a display panel 23, a back plate 24, and a heat dissipation layer 25. The optical adhesive layer 21 is arranged on one side of the cover plate 10. The polarizer 22 is arranged on a side of the optical adhesive layer 21 away from the cover plate 10. The display panel 23 is arranged on a side of the polarizer 22 away from the optical adhesive layer 21. The back plate 24 is arranged on a side of the display panel 23 away from the polarizer 22. The heat dissipation layer 25 is arranged on a side of the back plate 24 away from the display panel 23. The opening 30 penetrates the optical adhesive layer 21, the polarizer 22, the display panel 23, the back plate 24, and the part of the heat dissipation layer 25 located in the display area AA.

[0039] To avoid redundancy, subsequent embodiments of the present application take the display panel 23 of the display module 20 as one of a micro light emitting diode display panel 23, a mini light emitting diode display panel 23, and an organic light emitting diode display panel 23 as an example for description.

[0040] In the first embodiment of the present application:

[0041] Referring to Figure 1 The display device 100 includes a cover plate 10 and a display module 20. The cover plate 10 includes a first sub-portion 11 and a second sub-portion 12 surrounding the first sub-portion 11. The display module 20 is disposed on one side of the cover plate 10. The display module 20 includes a display area AA, and a portion of the display module 20 located in the display area AA is provided with an opening 30. The opening 30 exposes at least a portion of the first sub-portion 11. The average content of sodium ions in the first sub-portion 11 is less than the average content of sodium ions in the second sub-portion 12.

[0042] In the first embodiment of the present application, the cover plate 10 includes the first sub-portion 11 and the second sub-portion 12. The first sub-portion 11 is exposed to the opening 30 and corresponds to the opening area O-Cut of the display device 100. The first sub-portion 11 can be shielded before chemical strengthening to reduce the sodium ion exchange on the surface of the first sub-portion 11. After chemical strengthening, the surface of the first sub-portion 11 has less sodium ion exchange, so that the average content of sodium ions in the first sub-portion 11 is less than the content of sodium ions in the second sub-portion 12. Since the average content of sodium ions in the first sub-portion 11 is low, the reaction rate of sodium ions on the surface of the first sub-portion 11 with water is reduced, the generation rate of silicic acid gel on the surface of the first sub-portion 11 is reduced, and the transmittance of the opening area O-Cut of the display device 100 is qualified, thereby improving the display effect.

[0043] It should be understood that the first sub-portion 11 can be shielded by pasting a film, plating a film, or growing a film layer directly on the surface of the first sub-portion 11 before chemical strengthening. After chemical strengthening, the pasted film, plated film, or grown film can be removed by physical (laser) or chemical (etching) methods. Alternatively, the plated film can be retained if it does not affect the transmittance of the opening area O-Cut.

[0044] It should be understood that after the optical adhesive layer 21 is disposed on one side of the cover plate 10, the optical adhesive layer 21 covers the second sub-portion 12, thereby blocking the reaction of sodium ions on the surface of the second sub-portion 12 with water in the air. Thus, the hydrolysis reaction of the second sub-portion 12 to generate silicic acid gel after chemical strengthening of the cover plate 10 is avoided, and the transmittance of the second sub-portion 12 is improved.

[0045] In the present application, the opening 30 penetrates the optical adhesive layer 21, thereby avoiding the adsorption of impurities by the exposed portion of the optical adhesive layer 21 and affecting the transmittance of the opening area O-Cut.

[0046] Optionally, the difference between the weight percentage of sodium ions in the second sub-portion 12 and the weight percentage of sodium ions in the first sub-portion 11 is greater than 0.2wt%.

[0047] Since the first sub-part 11 is shielded during the chemical strengthening process, the weight percentage of sodium ions in the first sub-part 11 is less than the weight percentage of sodium ions in the second sub-part 12. When the difference between the weight percentage of sodium ions in the second sub-part 12 and the weight percentage of sodium ions in the first sub-part 11 is greater than 0.2wt%, the rate of reaction of sodium ions on the surface of the first sub-part 11 with water can be effectively inhibited, thereby ensuring that the transmittance of the O-Cut area O-Cut is qualified and improving the display effect.

[0048] Optionally, the average content of potassium ions in the first sub-part 11 is less than the average content of potassium ions in the second sub-part 12.

[0049] Potassium ions are also added during the chemical strengthening process of the cover plate 10. The potassium ions migrate to the surface of the cover plate 10 and are enriched on the surface, thereby reacting with water in the air to form silicic acid gel. In this embodiment, the first sub-part 11 is shielded before chemical strengthening, thereby reducing the content of potassium ions in the first sub-part 11. Since the average content of potassium ions in the first sub-part 11 is low, the rate of reaction of potassium ions on the surface of the first sub-part 11 with water is reduced, thereby reducing the generation rate of silicic acid gel on the surface of the first sub-part 11. The transmittance of the O-Cut area O-Cut of the display device 100 is qualified, and the display effect is improved.

[0050] Optionally, the number of the openings 30 is multiple. At least one of the openings 30 is configured to mount an under-screen camera. At least one of the openings 30 is configured to mount an infrared sensor. At least one of the openings 30 is configured to mount an ambient light sensor.

[0051] The ambient light sensor can be used to detect the brightness of ambient light, so that the brightness of the display panel 23 can be adjusted. The infrared sensor can be used for functions such as distance detection, face recognition, and data transmission. The under-screen camera can be used for functions such as shooting and face recognition.

[0052] Optionally, referring to Figure 2 , the display device 100 further comprises a first film layer 40. The first film layer 40 covers the surface of the first sub-part 11. The display module 20 covers the surface of the second sub-part 12. The opening 30 exposes at least part of the first film layer 40.

[0053] In the first embodiment of the present application, although the first sub-portion 11 is shielded before chemical strengthening, so that the average content of sodium ions in the first sub-portion 11 is less than the average content of sodium ions in the second sub-portion 12 after chemical strengthening, the first sub-portion 11 still retains a portion of sodium ions. On the one hand, in order to reduce the hydrolysis reaction of the first sub-portion 11 with water in the air after chemical strengthening, a first film layer 40 can be formed on the surface of the first sub-portion 11 after chemical strengthening. The first film layer 40 covers the first sub-portion 11, thereby blocking the hydrolysis reaction of water in the air with the surface of the first sub-portion 11, and further improving the transmittance of the open hole area O-Cut. On the other hand, in order to reduce the process of removing the film layer used to shield the first sub-portion 11 after chemical strengthening, the process of covering the first sub-portion 11 with the first film layer 40 is performed before chemical strengthening. Before chemical strengthening, the first film layer 40 covers the first sub-portion 11. During chemical strengthening, the first film layer 40 blocks sodium ions from entering the first sub-portion 11, so that the content of sodium ions in the first sub-portion 11 is less than the content of sodium ions in the second sub-portion 12. After chemical strengthening, the first film layer 40 does not need to be removed, and the display module 20 is covered on the side of the cover plate 10 provided with the first film layer 40. At this time, the first film layer 40 covers the first sub-portion 11 exposed by the open hole 30, which can block the hydrolysis reaction of water in the air with the first sub-portion 11 in subsequent processes and user use, to ensure that the open hole area O-Cut transmittance is qualified.

[0054] Optionally, the thickness of the first film layer 40 is in the range of 2 nanometers to 10 nanometers. The first film layer 40 is a single-layer transparent film layer or a double-layer transparent film layer.

[0055] Since the thickness of the first film layer 40 is in the range of 2 nanometers to 10 nanometers, and the first film layer 40 is a single-layer transparent film layer or a double-layer transparent film layer, the first film layer 40 can prevent the elimination of light in the visible light band. After the light is reflected by the first film layer 40, the reflected light does not have color difference.

[0056] Optionally, the thickness of the first film layer 40 is one of 2 nm, 2.1 nm, 2.2 nm, 2.3 nm, 2.4 nm, 2.5 nm, 2.6 nm, 2.7 nm, 2.8 nm, 2.9 nm, 3.0 nm, 3.1 nm, 3.2 nm, 3.3 nm, 3.4 nm, 3.5 nm, 3.6 nm, 3.7 nm, 3.8 nm, 3.9 nm, 4.0 nm, 4.1 nm, 4.2 nm, 4.3 nm, 4.4 nm, 4.5 nm, 4.6 nm, 4.7 nm, 4.8 nm, 4.9 nm, 5.0 nm, 5.1 nm, 5.2 nm, 5.3 nm, 5.4 nm, 5.5 nm, 5.6 nm, 5.7 nm, 5.8 nm, 5.9 nm, 6.0 nm, 6.1 nm, 6.2 nm, 6.3 nm, 6.4 nm, 6.5 nm, 6.6 nm, 6.7 nm, 6.8 nm, 6.9 nm, 7.0 nm, 7.1 nm, 7.2 nm, 7.3 nm, 7.4 nm, 7.5 nm, 7.6 nm, 7.7 nm, 7.8 nm, 7.9 nm, 8.0 nm, 8.1 nm, 8.2 nm, 8.3 nm, 8.4 nm, 8.5 nm, 8.6 nm, 8.7 nm, 8.8 nm, 8.9 nm, 9.0 nm, 9.1 nm, 9.2 nm, 9.3 nm, 9.4 nm, 9.5 nm, 9.6 nm, 9.7 nm, 9.8 nm, 9.9 nm, or 10 nm.

[0057] Optionally, the first film layer 40 is a single-layer transparent film layer with a thickness in a range from 2 nm to 10 nm. The first film layer 40 is one of a silicon oxide layer, a nano-metal layer, and an Anti Glare (AG) layer. The nano-metal layer can be made of platinum or silver. The single-layer transparent film layer can ensure the open hole area O-Cut to pass the transmittance test and avoid color difference in the open hole area O-Cut, thereby improving the display effect.

[0058] Optionally, the first film layer 40 can also be an Anti Reflection (AR) film.

[0059] Optionally, the first film layer 40 is a double-layer transparent film layer with a thickness in a range from 2 nm to 10 nm. The first film layer 40 includes a silicon oxide layer and a fluoride layer. The silicon oxide layer is arranged on one side of the cover plate 10. The fluoride layer is arranged on a side of the silicon oxide layer away from the cover plate 10. The open hole 30 exposes at least part of the fluoride layer.

[0060] The first film layer 40 can be an anti-fingerprint layer (AF). The anti-fingerprint layer includes a silicon oxide layer and a fluoride layer. The double-layer transparent film layer can ensure that the transmittance of the opening area O-Cut is qualified and improve the display effect. Optionally, the material of the fluoride layer is one of hexafluorosilicon and perfluoropolyether (PFPE).

[0061] Optionally, the thickness of the first film layer 40 is less than the thickness of the optical adhesive layer 21. Optionally, the thickness of the first film layer 40 is less than the thickness of the optical adhesive layer 21. On the one hand, avoiding the thickness of the first film layer 40 being too thick to eliminate part of the visible light band, so that the opening area O-Cut appears color difference phenomenon, improve the display effect. On the other hand, the thicker optical adhesive layer 21 can improve the effect of the second sub-department 12 blocking water in the air, avoiding the hydrolysis reaction of sodium ions on the surface of the second sub-department 12 and water in the air to generate silica gel, improving the transmittance of the second sub-department 12.

[0062] In the second embodiment of the present application:

[0063] Please refer to Figure 3 The display device 100 includes a cover plate 10, a first film layer 40, and a display module 20. The first film layer 40 is arranged on one side of the cover plate 10. The display module 20 is arranged on one side of the cover plate 10. The display module 20 includes a display area AA. The part of the display module 20 located in the display area AA is provided with an opening 30. The opening 30 exposes at least part of the first film layer 40.

[0064] In the second embodiment of the present application, before chemical strengthening, the part of the cover plate 10 corresponding to the opening area O-Cut is not shielded, and during the chemical strengthening process, the sodium ion content of the whole cover plate 10 is relatively uniform. After chemical strengthening, the first film layer 40 is formed on the part of the cover plate 10 corresponding to the opening area O-Cut, and the cover plate 10 is arranged on one side of the display module 20. The opening 30 is provided in the display module 20, and the opening 30 exposes at least part of the first film layer 40. In the second embodiment, although the part of the cover plate 10 corresponding to the opening area O-Cut is not shielded during the chemical strengthening process, the first film layer 40 is arranged on the part of the cover plate 10 exposed to the opening 30 after the chemical strengthening, thereby preventing the part of the cover plate 10 exposed to the opening 30 from reacting with water to generate silica gel, resulting in unqualified transmittance of the opening area O-Cut.

[0065] In the actual test process, when the first film layer 40 is selected as three-layer anti-reflection film: silicon dioxide layer (115 nanometers) / silicon nitride layer (5 nanometers) / silicon dioxide layer (10 nanometers), the phenomenon of yellowish visual effect of the microcrystalline glass in the open hole area occurs. It is verified by experiment that the reason is that after the external light enters the three-layer anti-reflection film, multiple reflections occur at multiple interfaces inside the anti-reflection film, forming multiple reflected lights. The multiple reflected lights are different in path length (optical path difference), and when they meet again, a phase difference is generated. If the thickness of each film layer inside the anti-reflection film is reasonably controlled, the different reflected lights can realize destructive interference. Since the wavelengths of different spectra in visible light are different, a multi-layer structure of anti-reflection film is needed to reduce the reflection of visible light band. Among them, the three-layer anti-reflection film cannot eliminate all the light in the entire visible light band, and the light with a wavelength of 570 nanometers to 585 nanometers will be reflected. The light with this wavelength range corresponds to the color yellow, so the visual effect of the microcrystalline glass in the open hole area appears yellowish, which affects the display effect of the display device.

[0066] Optionally, the first film layer 40 is a single-layer transparent film layer or a double-layer transparent film layer. The thickness of the first film layer 40 is in the range of 2 nanometers to 10 nanometers.

[0067] While ensuring that the transmittance of the open hole area O-Cut is qualified, the first film layer 40 is a single-layer transparent film layer or a double-layer transparent film layer with a thickness in the range of 2 nanometers to 10 nanometers, thereby preventing the first film layer 40 from eliminating the light in the visible light band. Compared with the three-layer anti-reflection film, when the first film layer 40 in the present application is a single-layer transparent film layer with a thickness in the range of 2 nanometers to 10 nanometers, after the external light enters the first film layer 40, two reflections occur at both sides of the first film layer 40, forming two reflected lights. The two reflected lights have an optical path difference, and when they meet again, a phase difference is generated. Since the material and thickness of the single-layer transparent first film layer 40 in the present application are different from those of the traditional three-layer anti-reflection film, although the reflected lights with different wavelengths in the visible light wavelength range are weakened after being reflected by both sides of the first film layer 40, the reflected lights with different wavelengths in the visible light wavelength range are not completely eliminated by the two sides of the first film layer 40 due to destructive interference, because the condition for destructive interference is that in the interference of light, the optical path difference is an odd multiple of half the wavelength. When the first film layer 40 is a single-layer transparent film layer with a thickness in the range of 2 nanometers to 10 nanometers, compared with the material and thickness of the traditional three-layer anti-reflection film, the two reflected lights formed at both sides of the first film layer 40 do not meet the condition for destructive interference, so they are not completely eliminated. Therefore, after the two reflected lights with an optical path difference are reflected to the human eye, the first film layer 40 observed by the human eye does not appear yellowish visually.

[0068] Similarly, when the first film layer 40 of the present application is a double-layer transparent film layer with a thickness of 2-10 nm, the external light entering the first film layer 40 will be reflected three times at the three interfaces of the two sides of the first film layer 40 and the two film layers inside the first film layer 40, forming three reflected lights. The three reflected lights have optical path differences, and will produce phase differences when they meet again. Since the material and thickness of the double-layer transparent first film layer 40 of the present application are different from those of the conventional three-layer anti-reflective film, the reflected lights of different wavelengths in the visible light wavelength range will be weakened after being reflected by the three interfaces, but the reflected lights of different wavelengths in the visible light wavelength range will not be completely eliminated by the reflection of the two sides of the first film layer 40 due to destructive interference, because the condition for destructive interference is that the optical path difference is an odd multiple of half the wavelength in the light interference. When the first film layer 40 is a double-layer transparent film layer with a thickness of 2-10 nm, the material and thickness of the first film layer 40 are different from those of the conventional three-layer anti-reflective film, and the three reflected lights formed at the three interfaces of the first film layer 40 do not meet the condition for destructive interference in the visible light wavelength range, so they will not be completely eliminated. Therefore, when the three reflected lights with optical path differences are reflected to the human eye, the first film layer 40 observed by the human eye will not appear visually yellow.

[0069] The present embodiment can ensure that the transmittance of the opening area O-Cut of the display device 100 is qualified, and solve the problem of visual yellowing caused by attaching a three-layer anti-reflective film, further improving the display effect.

[0070] Optionally, please refer to Figure 4 The first film layer 40 is arranged in the opening 30. The first film layer 40 can be prevented from extending between the cover plate 10 and the optical adhesive layer 21, improving the flatness and bonding force between the optical adhesive layer 21 and the cover plate 10.

[0071] Optionally, the thickness of the first film layer 40 is one of 2 nm, 2.1 nm, 2.2 nm, 2.3 nm, 2.4 nm, 2.5 nm, 2.6 nm, 2.7 nm, 2.8 nm, 2.9 nm, 3.0 nm, 3.1 nm, 3.2 nm, 3.3 nm, 3.4 nm, 3.5 nm, 3.6 nm, 3.7 nm, 3.8 nm, 3.9 nm, 4.0 nm, 4.1 nm, 4.2 nm, 4.3 nm, 4.4 nm, 4.5 nm, 4.6 nm, 4.7 nm, 4.8 nm, 4.9 nm, 5.0 nm, 5.1 nm, 5.2 nm, 5.3 nm, 5.4 nm, 5.5 nm, 5.6 nm, 5.7 nm, 5.8 nm, 5.9 nm, 6.0 nm, 6.1 nm, 6.2 nm, 6.3 nm, 6.4 nm, 6.5 nm, 6.6 nm, 6.7 nm, 6.8 nm, 6.9 nm, 7.0 nm, 7.1 nm, 7.2 nm, 7.3 nm, 7.4 nm, 7.5 nm, 7.6 nm, 7.7 nm, 7.8 nm, 7.9 nm, 8.0 nm, 8.1 nm, 8.2 nm, 8.3 nm, 8.4 nm, 8.5 nm, 8.6 nm, 8.7 nm, 8.8 nm, 8.9 nm, 9.0 nm, 9.1 nm, 9.2 nm, 9.3 nm, 9.4 nm, 9.5 nm, 9.6 nm, 9.7 nm, 9.8 nm, 9.9 nm, and 10 nm.

[0072] Optionally, the first film layer 40 is a single-layer transparent film layer with a thickness in a range from 2 nm to 10 nm. The first film layer 40 is one of a silicon oxide layer, a nano-metal layer, and an Anti Glare (AG) layer. The nano-metal layer can be made of platinum or silver. The single-layer transparent film layer can ensure the open hole area O-Cut to pass the transmittance test while avoiding the open hole area O-Cut from appearing yellow in visual effect, thereby improving the display effect.

[0073] Optionally, the first film layer 40 is a double-layer transparent film layer with a thickness in a range from 2 nm to 10 nm. The first film layer 40 includes a silicon oxide layer and a fluoride layer. The silicon oxide layer is arranged on one side of the cover plate 10. The fluoride layer is arranged on a side of the silicon oxide layer away from the cover plate 10. The open hole 30 exposes at least part of the fluoride layer.

[0074] The first film layer 40 can be an Anti Fingerprint (AF) layer. The Anti Fingerprint layer includes a silicon oxide layer and a fluoride layer. The double-layer transparent film layer can ensure the open hole area O-Cut to pass the transmittance test while avoiding the open hole area O-Cut from appearing yellow in visual effect, thereby improving the display effect.

[0075] Optionally, the thickness of the first film layer 40 is less than the thickness of the optical adhesive layer 21. On the one hand, avoiding the thickness of the first film layer 40 being too thick to eliminate part of the visible light band, so that the opening area O-Cut appears color difference phenomenon, improve the display effect. On the other hand, the thicker optical adhesive layer 21 can improve the effect of the cover plate 10 corresponding to the display area AA to block water in the air, avoid the cover plate 10 corresponding to the display area AA and water in the air to generate silicic acid gel by hydrolysis reaction, improve the transmittance of the cover plate 10 corresponding to the display area AA.

[0076] Optionally, the number of the opening hole 30 is multiple. At least one of the opening hole 30 is configured to install the under-screen camera. At least one of the opening hole 30 is configured to install the infrared sensor. At least one of the opening hole 30 is configured to install the ambient light sensor.

[0077] The ambient light sensor can be used to detect the brightness of the ambient light, so that the brightness of the display panel 23 can be adjusted. The infrared sensor can be used for distance detection, face recognition, data transmission and other functions. The under-screen camera can be used for shooting, face recognition and other functions.

[0078] Optionally, the cover plate 10 includes a first sub-portion 11 and a second sub-portion 12 surrounding the first sub-portion 11. The first film layer 40 covers the surface of the first sub-portion 11. The display module 20 covers the surface of the second sub-portion 12. The average content of sodium ions in the first sub-portion 11 is less than the average content of sodium ions in the second sub-portion 12.

[0079] Optionally, before chemical strengthening, the first film layer 40 covers the surface of the first sub-portion 11, thereby shielding the first sub-portion 11 and weakening the sodium ion exchange on the surface of the first sub-portion 11 during the chemical strengthening process. After chemical strengthening, the average content of sodium ions in the first sub-portion 11 is less than the content of sodium ions in the second sub-portion 12 due to the reduced sodium ion exchange on the surface of the first sub-portion 11. Since the average content of sodium ions in the first sub-portion 11 is low, the reaction rate of sodium ions on the surface of the first sub-portion 11 with water is reduced, thereby reducing the generation rate of silicic acid gel on the surface of the first sub-portion 11, ensuring the transmittance of the opening area O-Cut of the display device 100 to be qualified, and improving the display effect.

[0080] After chemical strengthening, the display module 20 is arranged on one side of the cover plate 10 and covers the first sub-portion 11. The display module 20 is provided with a through opening hole 30, and the opening hole 30 exposes the first sub-portion 11. The display module 20 covers the second sub-portion 12.

[0081] After chemical strengthening, the first film layer 40 covers the first sub-portion 11, which can prevent water in the air from reacting with sodium ions on the surface of the first sub-portion 11, thereby ensuring that the transmittance of the open hole area O-Cut is qualified. The display module 20 covers the second sub-portion 12, which can prevent water in the air from reacting with sodium ions on the surface of the second sub-portion 12, thereby ensuring that the transmittance of the display area AA is qualified and improving the display effect.

[0082] In subsequent processes, an optical film is attached to the side of the cover plate 10 on which the display module 20 is not arranged, thereby ensuring that the transmittance of the side of the cover plate 10 on which the display module 20 is not arranged is qualified. The optical film can be an anti-fingerprint layer.

[0083] Optionally, the difference between the weight percentage of sodium ions in the second sub-portion 12 and the weight percentage of sodium ions in the first sub-portion 11 is greater than 0.2 wt%.

[0084] The first sub-portion 11 is shielded during chemical strengthening, so that the weight percentage of sodium ions in the first sub-portion 11 is less than the weight percentage of sodium ions in the second sub-portion 12. When the difference between the weight percentage of sodium ions in the second sub-portion 12 and the weight percentage of sodium ions in the first sub-portion 11 is greater than 0.2 wt%, the rate of reaction of sodium ions on the surface of the first sub-portion 11 with water can be effectively inhibited, thereby ensuring that the transmittance of the open hole area O-Cut is qualified, and there is no need to attach a traditional three-layer anti-reflection film, thereby preventing the problem of visual yellowing of the open hole area O-Cut.

[0085] Optionally, the average content of potassium ions in the first sub-portion 11 is less than the average content of potassium ions in the second sub-portion 12.

[0086] Potassium ions are also added during the chemical strengthening of the cover plate 10, and the potassium ions migrate to the surface of the cover plate 10 and are enriched on the surface, thereby reacting with water in the air to generate silicic acid gel. In this embodiment, the first sub-portion 11 is shielded before chemical strengthening, thereby reducing the content of potassium ions in the first sub-portion 11. Because the average content of potassium ions in the first sub-portion 11 is low, the rate of reaction of potassium ions on the surface of the first sub-portion 11 with water is reduced, thereby reducing the generation rate of silicic acid gel on the surface of the first sub-portion 11, ensuring that the transmittance of the open hole area O-Cut of the display device 100 is qualified, and improving the display effect.

[0087] The specific embodiments of the present application are described in detail above. The above-described embodiments disclosed in the present application are only preferred embodiments of the present application, and those of ordinary skill in the art can make many variations and improvements without departing from the concept of the present application. These variations and improvements fall within the scope of protection defined by the claims of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a cover plate comprising a first sub-portion and a second sub-portion arranged around the first sub-portion; and a display module arranged on one side of the cover plate, the display module comprising a display area, and a portion of the display module located in the display area is provided with an opening, and the opening exposes at least a portion of the first sub-portion. The average content of sodium ions in the first sub-portion is less than the average content of sodium ions in the second sub-portion.

2. The display device of claim 1, wherein, The difference between the weight percentage of sodium ions in the second sub-portion and the weight percentage of sodium ions in the first sub-portion is greater than 0.2 wt%.

3. The display device of claim 1, wherein The average content of potassium ions in the first sub-portion is less than the average content of potassium ions in the second sub-portion.

4. The display device of claim 1, wherein The display device further comprises a first film layer covering a surface of the first sub-portion, and the display module covers a surface of the second sub-portion, and the opening exposes at least a portion of the first film layer.

5. The display device of claim 4, wherein, The thickness of the first film layer is in a range of 2 nm to 10 nm, and the first film layer is a single-layer transparent film layer or a double-layer transparent film layer.

6. The display device of claim 4, wherein, The first film layer is a double-layer transparent film layer, and the first film layer comprises: a silicon oxide layer arranged on one side of the cover plate; and a fluoride layer arranged on a side of the silicon oxide layer away from the cover plate; wherein the opening exposes at least a portion of the fluoride layer.

7. The display device of claim 4, wherein The first film layer is arranged in the opening.

8. The display device of claim 1, wherein, The number of the openings is a plurality, at least one of the openings is configured to mount an under-screen camera, at least one of the openings is configured to mount an infrared sensor, and at least one of the openings is configured to mount an ambient light sensor.

9. The display device of any one of claims 1-8, wherein, The display module comprises: an optical adhesive layer arranged on one side of the cover plate; a polarizing sheet arranged on a side of the optical adhesive layer away from the cover plate; a display panel arranged on a side of the polarizing sheet away from the optical adhesive layer; a back plate arranged on a side of the display panel away from the polarizing sheet; and a heat dissipation layer arranged on a side of the back plate away from the display panel; wherein the opening penetrates the optical adhesive layer, the polarizing sheet, the display panel, the back plate, and the heat dissipation layer located in the portion of the display area.

10. The display device according to claim 4, wherein The display module further comprises an optical adhesive layer arranged on one side of the cover plate, and the thickness of the first film layer is less than the thickness of the optical adhesive layer.

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