CN111312919A - Display screen assembly, electronic device and preparation method of display screen assembly - Google Patents

Abstract

The present application discloses a display screen assembly, comprising a display screen; a transparent cover plate, which is located on one side of the display screen and is stacked with the display screen; a light-absorbing coating is located between the display screen and the transparent cover plate time, for providing polarization performance for the display screen. The display screen assembly provided by the present application includes a display screen, a transparent cover plate laminated with the display screen, and a light-absorbing coating between the display screen and the transparent cover plate, the light-absorbing coating at least partially covers the display screen, and is used for providing the display screen Provides polarizing properties. With the above structure, on the one hand, the light-absorbing coating can absorb light that blocks the display screen, and on the other hand, the light-absorbing coating is very thin, which can adapt to the bending process of the display screen, and can make the entire display screen assembly thinner. The present application also provides an electronic device including the above-described display screen assembly and a method for preparing the above-mentioned display screen assembly.

Description

A display screen assembly, an electronic device, and a preparation method of the display screen assembly

technical field

The present application relates to the technical field of electronic equipment, and in particular, to a display screen assembly, an electronic device and a method for preparing the display screen assembly.

Background technique

With the emergence and development of flexible OLED screens such as mobile phones and tablet computers, users' requirements for the appearance and shape of mobile phone displays are further enhanced, and the thickness of OLED screens will be required to be thinner and lighter. Even sometimes, the OLED screen needs to be stretched and deformed, and the OLED screen before the structural improvement is often unable to do so.

SUMMARY OF THE INVENTION

The present application provides a display screen assembly, an electronic device and a preparation method of the display screen assembly.

A technical solution adopted in this application is to provide a display screen assembly, including:

display screen;

a transparent cover plate, located on one side of the display screen, and arranged in layers with the display screen;

a light absorbing coating between the display screen and the transparent cover for providing polarizing properties to the display screen

The present application also provides an electronic device, including a casing and the above-mentioned display screen assembly, wherein the display screen assembly is fixedly connected to the casing.

The present application also provides a method for preparing a display screen assembly, comprising:

Provide a display screen and transparent cover;

forming a light-absorbing coating on one side of the transparent cover plate;

The transparent cover plate is fixed on the display screen, so that the light-absorbing coating is located between the transparent cover plate and the display screen.

The display screen assembly provided by the present application includes a display screen, a transparent cover plate laminated with the display screen, and a light-absorbing coating between the display screen and the transparent cover plate, the light-absorbing coating at least partially covers the display screen, and is used for providing the display screen Provides polarizing properties. With the above structure, on the one hand, the light-absorbing coating can absorb light that blocks the display screen, and on the other hand, the light-absorbing coating is very thin, which can adapt to the bending process of the display screen, and can make the entire display screen assembly thinner.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is a schematic structural diagram of an embodiment of a display screen assembly of the present application;

2 is a schematic structural diagram of an embodiment of an electronic device of the present application;

3 is a partial structural schematic diagram of a display screen assembly of the present application in another embodiment;

FIG. 4 is a partial structural schematic diagram of the display screen assembly of the present application in another embodiment;

5 is a partial structural schematic diagram of a display screen assembly of the present application in yet another embodiment;

FIG. 6 is a partial structural schematic diagram of a display screen assembly of the present application in another embodiment;

FIG. 7 is a partial structural schematic diagram of a display screen assembly of the present application in yet another embodiment;

8 is a schematic structural diagram of a display screen of the present application in an embodiment;

FIG. 9 is a partial structural schematic diagram of a display screen assembly of the present application in another embodiment;

10 is a partial structural schematic diagram of a display screen assembly of the present application in yet another embodiment;

11 is a schematic structural diagram of an electronic device of the present application in another embodiment;

12 is a schematic structural diagram of the electronic device of the present application in yet another embodiment;

FIG. 13 is a schematic flowchart of a method for manufacturing a display screen assembly of the present application in an embodiment.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all the structures related to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor a separate or alternative embodiment that is mutually exclusive of other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

The present application provides a display screen assembly 100 and an electronic device 200 including the display screen assembly 100 . Referring to FIG. 1, FIG. 1 is a schematic structural diagram of an embodiment of a display screen assembly 100 of the present application; FIG. 2 is a structural schematic diagram of an embodiment of an electronic device 200 of the present application. Specifically, the electronic device 200 may be any one of various types of computer system devices that are mobile or portable and perform wireless communication (only one form is exemplarily shown in FIG. 2 ). Specifically, the electronic device 200 may be a mobile phone or smart phone (eg, iPhone TM based, Android TM based phone), portable gaming device (eg Nintendo DS TM, PlayStation Portable TM, Gameboy Advance TM, iPhone TM ), laptop Computers, PDAs, portable Internet devices, music players, and data storage devices, other handheld devices, and headsets, etc., the electronic device 200 can also be used for other wearable devices that need to be charged (for example, such as electronic bracelets, electronic necklaces, etc.) , head-mounted devices (HMDs) for electronic devices or smart watches).

Electronic device 200 may also be any of a number of electronic devices including, but not limited to, cellular phones, smart phones, other wireless communication devices, personal digital assistants, audio players, other media players, music recorders , video recorders, other media recorders, radios, medical equipment, vehicle transportation equipment, calculators, programmable remote controls, pagers, laptops, desktop computers, printers, netbooks, personal digital assistants (PDAs), portable multimedia players Players (PMP), Moving Picture Experts Group (MPEG-1 or MPEG-2) Audio Layer 3 (MP3) players, portable medical devices, and digital cameras and combinations thereof.

In some cases, the electronic device 200 may perform various functions (eg, play music, display video, store pictures, and receive and send phone calls). If desired, electronic device 200 may be a device such as a cellular phone, media player, other handheld device, wristwatch device, pendant device, handset device, or other compact portable device.

Continuing to refer to FIG. 1 , the display screen assembly 100 includes a light-absorbing coating 20 overlapping the display screen 10 and the display screen and a transparent cover plate 25 located on one side of the display screen 10 , and the light-absorbing coating 20 is located on the display screen 10 and the transparent cover plate 25 . between.

Specifically, the display screen 10 is a component of the electronic device 200 to display pictures or videos. Compared with the traditional screen, the display screen 10 has obvious advantages. The battery life of the device, at the same time, based on its bendable and flexible characteristics, its durability is also much higher than that of the previous screen, reducing the probability of accidental damage to the device. However, most of the current displays cannot be bent or stretched. In order to better explain the improvement points of the present application, firstly, the structure of the display screen assembly before the structural improvement is explained.

Before the structural improvement, the display assembly includes the display screen and a circular polarizer covering one side of the display screen. The circular polarizer has a relatively thick thickness and can solve the problem of screen reflection, but the circular polarizer cannot be bent or stretched. . Before the structural improvement, the thickness of the circular polarizer can only be about 60 μm, and it cannot be thinner. And it cannot meet the needs of some new forms of folding and stretching, or wrinkles will appear after stretching. The present application solves the above problems, and the present application is explained below through various embodiments.

Specifically, in one embodiment, the display screen 10 includes a display area 14 and a non-display area 16, as shown in FIG. 1 . The light-absorbing coating 20 covers the light-emitting side of the display screen 10 , and covers the entire display area 14 of the display screen 10 or only a part of the display area 14 of the display screen 10 . For example, in the embodiment in which the display screen 10 is a flexible screen, the part covered by the light-absorbing coating 20 is the part where the flexible screen needs to be bent, or the entire display area 14 is not specifically limited here.

Specifically, the transparent cover plate 25 is made of, for example, glass, and the user protects the display screen 10 . The transparent cover plate 25 is located on one side of the display screen 10 and is stacked with the display screen 10 . Optionally, in one embodiment, the light-absorbing coating 20 is coated on the first surface 252 of the transparent cover plate 25 . Optionally, in another embodiment, the light-absorbing coating 20 can also be formed on the side of the display screen 10 close to the transparent cover plate 25 , as long as it can polarize the display screen 10 , which is not specifically limited here.

Optionally, in the embodiment where the light absorbing coating 20 completely covers the entire display area 14 of the display screen 10, the circular polarizer is completely removed, and the light absorbing coating 20 is used to replace the circular polarizer before the structural improvement. Before the structural improvement, the reflectivity of the metal traces inside the display screen 10 is approximately 45%. In the scheme using the circular polarizer, the reflectivity is roughly reduced to less than 5%, and the anti-reflection effect is good. With the solution of this embodiment, the circular polarizer is completely removed, and the light absorbing coating 20 is used instead, and the reflectivity can be reduced to about 7%, which is equivalent to the effect of using the traditional circular polarizer. Therefore, the present application adopts the above structure, on the one hand, the thickness of the display screen assembly 100 can be greatly reduced, and on the other hand, the phenomenon of light reflection existing in the display screen assembly 100 can be improved, and the display area 14 can be completely black when it is not displayed. effect, or a visual sense close to one. Further, the thickness of the light-absorbing coating 20 is made very thin, which can accept the state changes of bending and stretching to a certain extent, and is not easy to produce wrinkles. The above structure can be used on both a rigid display screen and a flexible screen, so that the flexible screen has better deformation performance. In some embodiments, the display screen 10 is a flexible screen.

Specifically, the light absorbing coating 20 includes at least one of niobium oxide, NB ₂ O ₅ , SIO ₂ , NB ₂ O ₅ , NB, SIO ₂ , NB, SIO ₂ , and NB ₂ O ₅ . The light-absorbing coating 20 is formed by electroplating.

Optionally, in another embodiment, the light-absorbing coating 20 is arranged to overlap with a part of the display screen 10 , the display assembly 100 includes a circular polarizer 30 in addition to the light-absorbing coating 20 , and the circular polarizer 30 overlaps with the display screen 10 . and the circular polarizer 30 and the light absorbing coating 20 are arranged in the same layer, as shown in FIG. 3 , which is a partial structural schematic diagram of the display screen assembly of the present application in another embodiment. By adopting the above structure, not all the anti-reflection components are circular polarizers 30, but some are circular polarizers 30 and some are light absorbing coatings 20, thereby improving the flexibility of the display screen assembly 100, at least partially Bending or stretching, for example, the position where the light-absorbing coating 20 is provided and its vicinity have certain bendability and stretchability.

Further, optionally, in an embodiment, the number of circular polarizers 30 is multiple, and a light absorbing coating 20 is arranged between two adjacent circular polarizers 30, as shown in FIG. 4 , which is shown in this application. A schematic diagram of a partial structure of a screen assembly in yet another embodiment. Specifically, the number of circular polarizers 30 may be two or more, which is not specifically limited herein. It can be understood that the light absorbing coating 20 is arranged between two adjacent circular polarizers 30, and the position or the vicinity where the light absorbing coating 20 is arranged has better deformability. It can be understood that, the more the number of circular polarizers 30 is, the more the number of light-absorbing coatings 20 is, so that the deformability of the entire display assembly 100 is better.

Optionally, in an embodiment, the display assembly 100 includes an elastic modulus layer 40 , as shown in FIG. 5 , which is a partial structural schematic diagram of the display assembly of the present application in yet another embodiment. The elastic film layer 40 is located on the side of the display screen 10 close to the light-absorbing coating 40 , and the elastic modulus layer 40 is located between the light-absorbing coating 20 and the display screen 10 . It can be understood that with the above structure, when the display screen 10 is folded inwardly, the light-absorbing coating 20 is subjected to tensile stress. In this embodiment, the elastic modulus layer 40 is formed under the light-absorbing coating 20. The increased thickness can effectively move the force generated during bending down to the elastic modulus layer 40, thereby reducing the bending stress on the light-absorbing coating 20, which greatly improves the application of the light-absorbing coating 20 to the large-angle bending of the folding screen. Effect.

Optionally, in another embodiment, the elastic modulus layer 40 is located on the side of the light absorbing coating 40 away from the display screen 10 , as shown in FIG. 6 , which is a part of the display screen assembly of the present application in yet another embodiment Schematic. By adopting this structure, when the display screen assembly 100 is bent when it is folded outward, the bending degree is improved and the effect of protecting the light absorbing coating 20 is at the same time. In this embodiment, the elastic modulus layer 40 completely overlaps the light absorbing coating 20 .

In another embodiment, the display screen 10 includes a front area 17, a bending area 18, and a transition area 19 between the front area 17 and the bending area 18, as shown in FIG. A schematic diagram of the structure in an embodiment. The elastic film layer 40 is disposed overlapping the bending area 18 of the display screen 10 . Specifically, it can be understood that the front area 17 , the bending area 18 and the transition area 19 are all the parts displayed on the display screen 10 . The deformation properties of 19 are greater than those of the frontal region 17 and smaller than that of the bending region 18 . In this embodiment, the frontal region 12 and the transition region 19 are not provided with the elastic modulus layer 40 . It can be understood that the deformation amount of the light-absorbing coating 20 at the position corresponding to the bending area 18 is larger than that of the front area 17 and the transition area 19. Therefore, the elastic modulus layer 40 provided in the bending area 18 can greatly improve the performance of the light-absorbing coating 20 in the bending area. 18 degree of bendability. In other embodiments, the elastic modulus layer 40 can also be provided in the transition area 19 and the bending area 18 at the same time, and the elastic film amount layer 40 is also disposed overlapping the bending area 18 and the transition area 19 of the display screen 10 to further enhance the Deformability of transition zone 19.

In the case of including the circular polarizer 30 , optionally, in an embodiment, the circular polarizer 30 is disposed overlapping the front area 17 of the display screen 10 . At the same time, the elastic modulus layer 40 is provided in the bending area 18 and the transition area 19 of the display screen 10, but the circular polarizer 30 is not provided. Understandably, since the front area 17 is an area that does not need to be deformed, the circular polarizer 30 can be arranged at the position of the front area, which can further improve the effect of preventing light reflection in the front area 17 .

In one embodiment, the thicknesses corresponding to the front area 17 , the transition area 19 , and the bending area 18 in the display screen assembly 100 are gradually reduced. It can be understood that the deformation of the bending region 18 is the largest, and it is better to be thinner to accommodate the deformation. In another embodiment, the thickness of the three regions can also be filled and balanced by a soft bonding layer. The front surface area 17 , the transition area 19 , and the bending area 18 in the display screen assembly 100 include multiple layers. Adhesives, such as OCA adhesives, are often used for bonding different layers. The thicknesses of the adhesive layers are different in different areas. Understandably, in this embodiment, since some areas use the circular polarizer 30, and some areas use the light absorbing coating 20, as mentioned above, the thickness of the light absorbing coating 20 is much larger than that of the circular polarizing film 30, such as curved polarizer 30. The folding area 18 adopts the structure of the light-absorbing coating 20 and the elastic modulus layer 40, and the overall thickness is very thin, so there is likely to be a large gap between different areas, which affects the appearance and display effect. In order to eliminate this difference, this embodiment adopts the method of thickening OCA glue for filling, so as to reduce the adverse effect caused by the difference. In another embodiment, the thickness of the OCA adhesive in the bending area can be made into a trapezoidal structure, so that the thickness change is slowed down, and there is a gradual process, so as to better connect with the transition area.

Each of the above embodiments is the case where the display screen 10 is an independent whole piece. Optionally, in an embodiment, the display screen 10 includes two or more parts that are spliced with each other, and there is a gap 11 at the spliced part, such as As shown in FIG. 8 , FIG. 8 is a partial structural schematic diagram of a display screen assembly according to another embodiment of the present application. With the above structure, since there is a gap 11 between two adjacent parts of the display screen 10 , a certain deformation space can be provided at the gap 11 . Since the display screen 10 includes a plurality of spliced parts, the corresponding light-absorbing coating 20 may be a whole piece, because the light-absorbing coating 20 itself is relatively thin and can also provide a certain deformation. In another embodiment, the light-absorbing coating 20 may also include two or more splicing parts 22 spliced with each other, and different splicing parts 22 correspond to different parts of the display screen 10 . Of course, in other embodiments, the circular polarizer 30 may also be partially used, and the light-absorbing coating 20 may be partially used. The circular polarizer 30 and the light-absorbing coating 20 correspond to different splicing parts 22 in the display screen 10 respectively, which are not specifically limited here. .

Optionally, in one embodiment, the display screen assembly 100 includes an anti-reflection film 50, and the anti-reflection film 50 is located on the outermost layer of the display screen assembly 100, that is, the transparent cover plate 25 is away from the display screen 10 side, that is The second surface 254 of the transparent cover plate 25 is shown in FIG. 9 , which is a partial structural schematic diagram of the display screen assembly of the present application in still another embodiment. Specifically, the anti-reflection film 50 is formed on the outermost layer of the display screen assembly 100 by electroplating. Optionally, the material of the anti-reflection film 50 includes SIO2 or TI3O5 or the like. With the above structure, the anti-reflection film 50 can use the interference principle to reduce reflection and increase transmission, thereby further enhancing the effect of preventing screen reflection.

The electronic device 200 provided by the present application includes a casing 210 and the display screen assembly 100 described in the above embodiments, as shown in FIG. 10 , which is a schematic structural diagram of the electronic device in another embodiment of the present application. The display screen assembly 100 and the housing 210 are fixedly connected. The housing 210 may be a middle frame, or a rear casing, or a component in which the middle frame and the rear casing are integrated.

The electronic device 200 of the present application adopts the display screen assembly 100 described in the above embodiments, so that the display screen 10 can have a more beautiful shape, and can also have certain bending and stretching properties. At the same time, the thickness of the light-absorbing coating 20 can be further reduced.

In one embodiment, the electronic device 200 includes a camera module 220, the camera module 220 is embedded in the display screen 10, and the overlapping portion of the light-absorbing coating 20 and the camera module 220 forms a clearance area 21, as shown in FIG. 11 . 11 is a schematic structural diagram of an electronic device of the present application in another embodiment. That is, in the process of forming the light absorbing coating 20 , the part opposite to the camera module 220 is avoided. For example, in the embodiment in which the light-absorbing coating 20 is formed on the transparent cover plate 25, the light-absorbing coating 20 is not formed on the part of the transparent cover plate 25 covering the camera module 220, thereby forming a clearance area 21 so that light can pass through the transparent cover plate 25. The clearance area 21 and the display screen 10 act on the camera module 220 to avoid the influence of the light-absorbing coating 20 on the shooting effect of the camera module 220 .

It can be understood that the camera module 220 is located on the side of the display screen 10 away from the transparent cover 25, and is located under the screen, and the display screen 10 can directly transmit light and act on the camera module. Optionally, in another embodiment, a via hole 13 is provided in the portion of the display screen 10 opposite to the clearance area 21 and the camera module 220 , so that light can pass through the transparent cover 25 , the clearance area 21 , and the via hole of the display screen 10 13 acts on the camera module 220 . In this embodiment, the camera module 220 may be located under the display screen 10 , or may be partially or entirely located in the via hole 13 , which is not specifically limited herein.

The present application also provides a method for preparing a display screen assembly. FIG. 12 is a schematic flowchart of an embodiment of the method. Specifically, the method includes steps 101 to 103, wherein:

Step 101: Provide a display screen and a transparent cover.

The specific display screen may be a rigid screen or a flexible screen, which is not specifically limited here.

Step 102 : forming a light-absorbing coating on one side of the transparent cover plate.

Specifically, the material for forming the light-absorbing coating is prepared first, and then is formed by coating by a machine, or formed by magnetron sputtering. Understandably, the magnetron sputtering coating machine is used for coating, which can ensure that the thickness and color difference of the coating on the entire surface of the transparent cover plate are more uniform, and the display effect is better. Optionally, the light-absorbing coating formed in step 102 is very thin at 270 nm to 290 nm, so that the entire display screen assembly or the electronic device can be made thinner and has better deformation performance. Specifically, in the process of forming the light-absorbing coating, the parts opposite to the camera module are not coated. For example, tape is applied to cover the camera hole area before coating, and the tape is removed after coating the entire surface. Alternatively, the entire surface is coated first, and then the film on the opposite local area of the camera module is removed by laser.

Step 103: Fix the transparent cover plate on the display screen so that the light-absorbing coating is located between the transparent cover plate and the display screen.

After the transparent cover plate is formed with a light-absorbing coating layer, the transparent cover plate is fixed on the display screen, so that the light-absorbing coating layer is located between the transparent cover plate and the display screen, thereby providing polarization performance for the display screen. Optionally, the fixing manner between the transparent cover plate and the display screen may be mechanical fixing, adhesive fixing, or a combination of the two, which is not specifically limited herein.

The above description is only an embodiment of the present application, and is not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Claims (17)

1. A display screen assembly, comprising:

a display screen;

the transparent cover plate is positioned on one side of the display screen and is arranged in a stacking mode with the display screen;

and the light absorption coating is positioned between the display screen and the transparent cover plate and is used for providing the display screen with polarization performance.

2. The display screen assembly of claim 1, wherein the side of the transparent cover plate adjacent to the display screen is a first surface, and wherein the light absorbing coating is applied to the first surface of the transparent cover plate.

3. The display screen assembly of claim 1, wherein the display screen includes a display area and a non-display area, and wherein the light absorbing coating covers the entire display area.

4. The display screen assembly of claim 1, wherein the light absorbing coating comprises niobium oxide.

5. The display screen assembly of claim 1, comprising a circular polarizer, wherein the circular polarizer is overlapped with the display screen, the light absorption coating is overlapped with a partial area of the display screen, the display screen is a flexible screen, and the circular polarizer and the light absorption coating are arranged in the same layer.

6. The display panel assembly of claim 5, wherein the number of circular polarizers is plural, and a light absorbing coating is disposed between two adjacent circular polarizers.

7. The display screen assembly of claim 1, comprising an elastic modulus layer, wherein the elastic modulus layer is located on a side of the display screen close to the light absorbing coating, the elastic modulus layer is located between the light absorbing coating and the display screen or on a side of the light absorbing layer away from the display screen, and the display screen is a flexible screen.

8. The display screen assembly of claim 7, wherein the display screen includes a front panel, a bending region, and a transition region between the front panel and the bending region, and wherein the elastic film gauge is disposed to overlap the bending region of the display screen.

9. The display screen assembly of claim 7, wherein the display screen includes a front panel, a bending region, and a transition region between the front panel and the bending region, and wherein the elastic film gauge is disposed to overlap both the bending region and the transition region of the display screen.

10. The display screen assembly of claim 9, further comprising a circular polarizer disposed in overlapping relation with the front face of the display screen.

11. The display screen assembly of claim 10, wherein the front region, the transition region, and the bending region of the display screen assembly have a corresponding thickness that decreases gradually.

12. The display screen assembly of claim 1, wherein the display screen comprises two or more sections that are joined to one another, wherein a gap exists between the two sections, and wherein the display screen is a flexible screen.

13. A display screen assembly according to claim 1 or 12, wherein the light absorbing coating comprises two or more splices spliced to each other, different splices corresponding to different parts of the display screen.

14. The display screen assembly of claim 1, comprising an anti-reflective film on a side of the transparent cover plate remote from the display screen.

15. An electronic device comprising a housing and a display screen assembly as claimed in any one of claims 1 to 13, wherein the display screen assembly is fixedly connected to the housing.

16. The electronic device of claim 15, comprising a camera module embedded in the display screen, wherein a clearance area is formed at a position where the light absorbing coating overlaps the camera module, so that light can act on the camera module through the clearance area.

17. A method of making a display screen assembly, comprising:

providing a display screen and a transparent cover plate;

forming a light absorbing coating on one side of the transparent cover plate;

fixing the transparent cover plate on the display screen so that the light absorbing coating is located between the transparent cover plate and the display screen.

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