Display panel, display device and manufacturing method of display panel

Abstract

The application provides a display panel, a display device and a manufacturing method of the display panel, wherein the display panel comprises a screen body, the screen body comprises a first region, a second region and a bending region connecting the first region and the second region, and the second region is provided with a first hole. The second region of the screen body of the display panel is provided with the first hole, so as to reserve a mounting space of terminal devices of the display device, facilitate assembly of the display panel and the terminal devices of the display device and save space.

Description

Technical Field

[0001] This invention relates to a display panel, a display device, and a method for manufacturing the display panel, belonging to the field of display technology. Background Technology

[0002] Flexible displays or display panels are an important component of display devices such as mobile phones. They are usually bent to increase the display area. However, when assembled with other components and / or terminal devices (such as microphones) of the display device, the whole thing takes up a lot of space, which is not convenient for users to carry. Summary of the Invention

[0003] To address the aforementioned problems, the present invention provides a display panel, a display device, and a method for manufacturing the display panel. The second region of the display panel screen has a first hole to reserve installation space for terminal devices, thereby reducing the space occupied by the display panel and terminal devices after assembly.

[0004] In one aspect, the present invention provides a display panel including a screen body, the screen body including a first region, a second region, and a bending region connecting the first region and the second region, the second region being provided with a first hole.

[0005] In one embodiment of the present invention, the first hole includes a through hole that penetrates the screen body along the thickness direction of the screen body, which helps to provide more space for the terminal device and further reduce the space occupied by the display panel and the terminal device after assembly.

[0006] In one embodiment of the present invention, the number of the first holes is one or more, so that the number of the first holes can be set according to the number of terminal devices and other conditions, thereby further saving space.

[0007] In one embodiment of the present invention, a shim block is further provided between the first region and the second region. The side of the shim block facing the second region is provided with a groove communicating with the first hole. In this way, the groove of the shim block can provide installation space for the terminal device, further reducing the space occupied by the display panel and the terminal device after assembly.

[0008] In one embodiment of the present invention, the groove and the first hole are projected onto the first region, which makes it easier to make full use of the space of the groove and the first hole, further reducing the space occupied by the screen and the terminal device after assembly, and at the same time facilitating the installation of the terminal device.

[0009] In one embodiment of the present invention, the number of grooves is the same as the number of first holes, which helps to further save space and facilitates the formation of the first holes and grooves.

[0010] In one embodiment of the present invention, the thickness of the portion of the shim corresponding to the groove is 0.3 to 0.8 mm. In this way, while providing installation space for the terminal device, the supporting strength of the shim can also be guaranteed, and the stability of the display panel can be improved.

[0011] In one embodiment of the present invention, the screen body is provided with an electrical connection component; the second region includes an un-drilled area adjacent to the first hole, and the electrical connection component is disposed in the un-drilled area, which helps to reduce the size of the display panel and further save space.

[0012] In one embodiment of the present invention, the second region includes a first sub-region and a second sub-region, the bending region, the first sub-region, and the second sub-region are sequentially connected, and the first hole is disposed in the first sub-region; the screen body includes a display area, the display area including the first region, the bending region, and the first sub-region. This provides an implementation method that, while providing installation space for terminal devices, can also increase the display area of ​​the display panel.

[0013] In one embodiment of the present invention, the number of the first holes is multiple, and the electrical connection component includes traces, the traces being at least partially located between any two adjacent first holes, thus avoiding the problem of excessively small array line spacing.

[0014] In another aspect, the present invention provides a method for manufacturing a display panel, the display panel comprising a screen body and a raised block, the screen body comprising a first region, a second region, and a bending region connecting the first region and the second region, the second region having a first hole, the raised block being disposed between the first region and the second region, and the side of the raised block facing the second region having a groove communicating with the first hole; the method for manufacturing the display panel comprising: providing a display panel precursor, the display panel precursor comprising a screen body substrate for forming the screen body and a raised block substrate for forming the raised block, the raised block substrate comprising a body region and a region to be removed, the region to be removed being bonded to the body region by a heat-resistant adhesive; forming the first hole by laser cutting a first preset perforation area of ​​the screen body substrate; and during the laser cutting process, the heat-resistant adhesive becomes less viscous after being heated, causing the region to be removed from the body region of the raised block substrate to form the groove. Thus, the first hole and the groove are formed simultaneously by laser cutting, eliminating the need for additional cutting of the raised block to form the groove, simplifying the formation process of the first hole and the groove.

[0015] In another aspect, the present invention provides a display device including the above-described display panel and a terminal device, wherein the terminal device is at least partially located within the first hole, thereby reducing the space occupied by the display panel and the terminal device after assembly.

[0016] In this invention, the second region can serve as a region for connection with the terminal device. It is provided with a first hole. When assembling the display panel and the terminal device, the terminal device can be embedded in the first hole. Thus, by providing the first hole in the second region to reserve space for terminal assembly, space is saved and the size (such as thickness) of electronic products such as mobile phones is reduced. At the same time, it also facilitates the assembly of the display panel and the terminal device, improves assembly efficiency and yield of electronic products, and enhances the performance of electronic products. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a display panel according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the screen body when it is not bent, according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the screen body without bending, according to another embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the screen body without the first hole and the shim block without the groove, according to an embodiment of the present invention.

[0021] Explanation of reference numerals in the attached figures:

[0022] 11: First area;

[0023] 12: Second area;

[0024] 12': The second area without holes;

[0025] 120: First hole;

[0026] 121: First sub-region;

[0027] 122: Second subregion;

[0028] 123: First preset punching area;

[0029] 13: Bending area;

[0030] 2: Raising blocks;

[0031] 20: Groove;

[0032] 21: Ontology area;

[0033] 22: Area to be removed;

[0034] 23: Heat-resistant adhesive;

[0035] 31: First supporting membrane;

[0036] 32: Second support membrane;

[0037] 32': Second support film substrate;

[0038] 320: Second hole;

[0039] A: The boundary between the display area and the non-display area;

[0040] B: Bending line. Detailed Implementation

[0041] With the development of Organic Light-Emitting Diode (OLED) technology, the bezels of displays are gradually shrinking. This is usually achieved by reducing the width of the bezel wiring area and the radius of the screen bending area.

[0042] However, according to the inventors' long-term research, the lack of reserved installation space for the terminal components when assembling the display screen with the terminal components of electronic products or display devices is an important factor affecting the size of electronic products.

[0043] In particular, borderless displays typically have a large bending radius in their bending areas, and the bottom of the screen (the second area below) is borderless, making it even more urgent to address the issue of the large space occupied by the assembly of the display and terminal devices.

[0044] To address the aforementioned technical problems, embodiments of the present invention provide a display panel, such as... Figure 1 , Figure 2 and Figure 3 As shown, the display panel includes a screen body, which includes a first region 11, a second region 12, and a bending region 13 connecting the first region 11 and the second region 12. The second region 12 is provided with a first hole 120.

[0045] The second region 12 is the lower border area of ​​the display panel, which is the area where the terminal device of the display device is connected to the display panel. The first hole 120 is provided in the second region 12 to reserve installation space for the terminal device. When the display panel and the terminal device are assembled into a whole, the terminal device can be embedded in the first hole 120, thereby saving assembly space.

[0046] Furthermore, the number of the aforementioned first holes 120 can be one (e.g., Figure 2 (as shown) or multiple (such as) Figure 3 (As shown), for example, one, two or three, without limitation.

[0047] Normally, the screen body is provided with electrical connection components. The second region 12 includes an un-drilled area adjacent to the first hole 120. The electrical connection components are located in the un-drilled area, that is, the electrical connection components do not extend into the first hole 120. Before the display panel and the terminal device of the display device are assembled, there are no other structures in the first hole 120 that fill the screen body and the display panel, so as to serve as the installation space for the terminal device.

[0048] Specifically, the electrical connection components include wiring or lines, and the second area 12 is also the wiring area of ​​the screen.

[0049] For example, the electrical connection component includes an integrated circuit (IC) or a driver chip.

[0050] The wiring of the electrical connection component is located in the un-drilled area, specifically around the first hole 120, that is, the wiring is wrapped around the first hole 120.

[0051] When there are multiple first holes 120, the traces of the electrical connection assembly are at least partially located between any two adjacent first holes 120. That is, the un-drilled area between two adjacent first holes 120 can also participate in the wiring. Usually, there are traces in the un-drilled area between every two adjacent first holes 120. In this way, the problem of excessively small array line spacing can be avoided.

[0052] Furthermore, the shape of the aforementioned first hole 120 can be a polygon, a circle, or other regular or irregular shape, wherein the polygon includes, for example, a quadrilateral (such as...). Figure 2 and Figure 3 (as shown), such as a rectangle or a square.

[0053] When there are multiple first holes 120, the shapes of the multiple first holes 120 may be the same or different, and their sizes may be the same or different. For example, the first holes 120 may be rectangular or square, and their lengths or widths may be the same or different.

[0054] It should be noted that the shape of the first hole 120 as described above is the shape of its orthographic projection onto the first region 11.

[0055] For example, such as Figure 2 As shown, there is one first hole 120, and its length direction is parallel to the width direction of the screen body. Along the width direction of the screen body, the first hole 120 is located in the middle of the second region 12, that is, the distance from the first hole 120 to the opposite edges of the screen body is basically equal. The shape of the first hole 120 can be rectangular.

[0056] Furthermore, when there are multiple first holes 120, such as Figure 3As shown, the plurality of first holes 120 can be distributed along the width direction of the screen body, and their distribution direction is perpendicular to the direction from the first region 11 to the second region 12.

[0057] Furthermore, the aforementioned first hole 120 may include a blind hole or a through hole (such as...). Figure 1 As shown, when there are multiple first holes 120, all of the multiple first holes 120 can be blind holes, all of them can be through holes, or some can be blind holes and some can be through holes.

[0058] The through hole is a through hole that penetrates the screen body along the thickness direction. Relatively speaking, when the first hole 120 is a through hole, more space can be reserved for the terminal device.

[0059] The display panel in this embodiment of the invention may include a full-screen display, and may further include a borderless display screen, the screen body of which may specifically include a flexible screen.

[0060] Specifically, such as Figures 1 to 3 As shown, the screen includes a display area (AA area), which includes a first area 11 and a bending area 13, meaning that both the first area 11 and the bending area 13 are display areas.

[0061] In addition, the screen may also include a non-display area. The second area 12 may be a display area or a non-display area, or partly a display area and partly a non-display area (i.e., the boundary between the display area and the non-display area is located in the second area 12).

[0062] The first hole 120 can be located in the display area, that is, the side of the display area closer to the non-display area is located on the side of the first hole 120 away from the bending area 13.

[0063] Specifically, in some embodiments, the second region 12 includes a first sub-region 121 and a second sub-region 122, the bending region 13, the first sub-region 121 and the second sub-region 122 are connected in sequence, the first hole 120 is disposed in the first sub-region 121, and the display area also includes the first sub-region 121.

[0064] In addition, such as Figure 1 , Figure 2 and Figure 3 As shown, the second sub-region 122 can be a non-display area, and the boundary line between the first sub-region 121 and the second sub-region 122 is also the boundary line A between the display area and the non-display area of ​​the screen.

[0065] Specifically, the second sub-region 122 can be used to bond flexible printed circuit boards (FPCs), such as bonding drive flexible printed circuit boards (D-FPCs).

[0066] In some embodiments, the display panel further includes a flexible circuit board bonded to a second sub-region 122, wherein the flexible circuit board at least partially overlaps with the second sub-region 122 in the direction from the first region 11 to the padding block 2 (the thickness direction of the screen).

[0067] Specifically, the flexible circuit board can be attached to the end of the second sub-region 122 that is away from the first sub-region 121.

[0068] Under normal circumstances, such as Figure 1 As shown, the display panel also includes a shim block 2 disposed between the first region 11 and the second region 12 to support the bent screen structure. The side of the shim block 2 facing the second region 12 is provided with a groove 20 communicating with the first hole 120. In this way, more space can be reserved for the terminal device. That is, when the display panel and the terminal device are assembled, the terminal device can be embedded in the first hole 120 of the screen and the groove 20 of the shim block 2, further saving space.

[0069] Under normal circumstances, the overall thickness L1 of the shim block 2 can be 1.8 to 2 mm.

[0070] The overall thickness L1 of the shim block 2 is also the thickness of the shim block 2 when the groove 20 is not provided, and it is also the thickness of the shim block 2 at the part where the groove 20 is not provided in the thickness direction of the shim block 2.

[0071] In some preferred embodiments, the thickness L2 of the portion of the shim block 2 corresponding to the groove 20 is 0.3 to 0.8 mm, for example, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, etc. This facilitates providing sufficient space for the terminal device while also ensuring the support strength of the shim block 2 for the screen.

[0072] The part corresponding to the groove 20 refers to the part of the raised block 2 remaining after the groove 20 is opened in the thickness direction of the raised block 2, which is also the part of the raised block 2 that is stacked with the groove 20 in the thickness direction of the raised block 2.

[0073] Specifically, the depth of the groove 20 is equal to the difference between the overall thickness L1 of the shim block 2 and the thickness L2 of the corresponding part of the shim block 2 and the groove 20.

[0074] Furthermore, the thickness direction of the shim block 2 is parallel to the vertical direction along the first region 11 to the second region 12 of the display panel (after the screen body is bent).

[0075] Specifically, such as Figure 1As shown, the groove 20 at least partially overlaps with the first hole 120 so that the groove 20 and the first hole 120 are connected. The area of ​​the orthographic projection of the groove 20 on the second region 12 can be greater than, equal to, or less than the area of ​​the first hole 120. The groove 20 can cover the first hole 120, or the first hole 120 can cover the groove 20.

[0076] In some preferred embodiments, the groove 20 and the first hole 120 are projected onto the first region 11, that is, the sidewall of the groove 20 is flush with the sidewall of the first hole 120. Correspondingly, the groove 20 and the first hole 120 are coaxially arranged, and the groove 20 and the first hole 120 have basically the same shape, radial width, and area of ​​their projected onto the second region 12. This facilitates the assembly of the display panel and the terminal device, and also facilitates the manufacturing of the display panel, improving the manufacturing yield and performance of the display panel.

[0077] In practice, the screen body can be attached to the pad block 2 before drilling. Specifically, drilling can start from the side of the second area 12 of the screen body away from the pad block 2 to form the first hole 120, and a groove 20 can be opened on the pad block.

[0078] In contrast, drilling holes after bonding the screen body to the shim block 2 to form the first hole 120 can ensure the bonding area when the screen body and the shim block 2 are bonded together, thereby improving the bonding strength between the screen body and the shim block 2 and the stability of the bonding structure, thus improving the production efficiency and yield of the display panel.

[0079] One method is to use laser cutting or other methods to drill holes, thereby removing the screen material to be formed into the first hole 120.

[0080] In specific implementation, such as Figure 4 As shown, before forming the groove 20, the shim substrate is used to form the shim 2. The shim substrate includes a body area 21 and a removal area 22. The removal area 22 is bonded to the body area 21 by heat-resistant adhesive 23. The screen substrate is used to form the screen. The first preset perforation area 123 of the screen substrate can be cut by laser cutting to form the first hole 120. During the laser cutting process, the heat-resistant adhesive 23 becomes less sticky after being heated, so that the removal area 22 of the shim substrate is removed from the body area 21 to form the groove 20.

[0081] In addition, the number of grooves 20 of the shim block 2 is the same as the number of first holes 120, each groove 20 corresponds to one first hole 120, and each groove 20 and the orthographic projection of one first hole 120 on the first region 11 coincide.

[0082] Furthermore, the material of the shim block 2 can be silicone rubber, but is not limited to this.

[0083] In addition, such as Figure 1 As shown, a second support membrane 32 may also be provided between the second region 12 and the raised block 2. The second support membrane 32 is provided with a second hole 320 that connects the first hole 120 and the groove 20. The second hole 320 is a through hole that penetrates the second support membrane 32 along the thickness direction of the second support membrane 32.

[0084] Specifically, holes can be drilled using methods such as laser cutting to remove screen material from the second preset perforated area of ​​the second support film 32, thereby forming the second hole 320. In a specific implementation, the screen substrate and the second support film substrate used to form the second support film 32 can be laser-cut together to form the first hole 120 and the second hole 320. The number of second holes 320 is the same as the number of first holes 120 or grooves 20, and the second holes 320 coincide with the first holes 120 or grooves 20. Correspondingly, the second holes 320 and the first holes 120 or grooves 20 are coaxially arranged, and their shape, radial width, and other parameters are the same.

[0085] In addition, such as Figure 1 As shown, a first support membrane 31 can also be provided between the first region 11 and the raised block 2 to further support and protect the screen.

[0086] In addition, the bending area 13 has no supporting film to facilitate bending of the screen.

[0087] Generally, the shape of the bending area 13 can be arc-shaped, such as a semi-circle.

[0088] Specifically, the screen body bends from the bend line B to form a bend area 13. The bend line B is also the dividing line between the first area 11 and the bend area 13. The arc length of the bend area 13 is greater than the distance from the bend line B to the first hole 120. After the screen body is bent, the first hole 120 is located in the second area, serving as the installation space for the terminal device of the display device.

[0089] Under normal circumstances, the radius of the arc corresponding to the bending area 13 is less than or equal to 1 mm.

[0090] In one embodiment of the present invention, a method for manufacturing the above-mentioned display panel is also provided, such as... Figure 4 As shown, the manufacturing method includes: providing a display panel precursor, which includes a screen substrate for forming a screen body and a shim substrate for forming a shim. The shim substrate includes a body area 21 and a region to be removed 22. The region to be removed 22 is bonded to the body area 21 by a heat-resistant adhesive 23; forming a first hole 120 by laser cutting a first preset perforation area 123 of the screen substrate; and during the laser cutting process, the heat-resistant adhesive 23 becomes less sticky after being heated, causing the region to be removed 22 of the shim substrate to be removed from the body area 21, forming a groove 20.

[0091] The structure of the screen substrate is the structure before the first hole 120 is formed in the screen. Specifically, the screen substrate includes a first region 11, an un-drilled second region 12', and a bending region 13 connecting the first region 11 and the un-drilled second region 12'. The first preset drilling region 123 is the area to be drilled on the un-drilled second region 12'. After the first hole 120 is drilled in the un-drilled second region 12', the screen substrate forms the screen in the display panel.

[0092] Furthermore, the structure of the padding block substrate is the same as that of the padding block 2 before the groove 20 is formed. It is located between the first region 11 and the second region 12' without perforation. After the area to be removed 22 is removed from the body region 21, the groove 20 is formed in the body region 21, so that the padding block substrate forms the padding block 2 in the display panel. Specifically, the body region 21 and the area to be removed 22 of the padding block substrate are bonded together by heat-resistant adhesive 23. The heat-resistant adhesive 23 has reduced adhesion when heated. It can be a conventional adhesive material with heat-resistant adhesion properties in the art, and there are no particular limitations on it.

[0093] Furthermore, the area to be removed 22 corresponds to the first preset perforation area 123 of the screen substrate. When perforation is performed by laser cutting, the cutting path corresponds to the heat-reducing adhesive 23. The heat generated by laser cutting is transferred to the heat-reducing adhesive 23. After being heated, the adhesiveness of the heat-reducing adhesive 23 decreases, thereby separating the area to be removed 22 from the body area 21. The area to be removed 22 is removed together with the screen material of the first preset perforation area 123, forming the groove 20 and the first hole 120 respectively.

[0094] As described above, in the display panel, a second support film 32 may also be provided between the second region 12 and the raised block 2. The second support film 32 is provided with a second hole 320 connecting the first hole 120 and the groove 20. Correspondingly, such as Figure 4 As shown, in the front body of the display panel, a second support film substrate 32' is provided between the screen substrate and the shim substrate for forming the second support film 32. The structure of the second support film substrate 32' is the structure between the second support film 32 forming the second hole 320. During the laser cutting process described above, the second preset perforated area of ​​the second support film substrate 32' can be cut simultaneously, so that the material of the first preset perforated area of ​​the screen substrate, the material of the second preset perforated area of ​​the second support film substrate 32', and the area to be removed from the shim substrate are removed together, forming the first hole 120, the second hole 320, and the groove 20 (e.g., Figure 1 (As shown).

[0095] The display device of this invention includes the above-described display panel and terminal device, with the terminal device at least partially located within the first hole 120.

[0096] The terminal device of the display device may be partially or completely embedded in the first hole 120.

[0097] For example, the terminal device of the display device may be a microphone assembly, a headphone jack assembly, etc., but is not limited thereto.

[0098] The display device can specifically be a display device such as an OLED display, or any product or component with display function, including such a display device, such as a television, digital camera, mobile phone, or tablet computer.

[0099] The advantages of this display device over the prior art are the same as those of the aforementioned display panel, and will not be repeated here.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display panel, characterized in that, The device includes a screen body, which includes a first region, a second region, a raised block disposed between the first region and the second region, and a bending area connecting the first region and the second region. The second region is provided with a first hole, and the side of the raised block facing the second region is provided with a groove communicating with the first hole. The first hole and the groove are used to set terminal devices.

2. The display panel according to claim 1, characterized in that, The first hole includes a through hole that penetrates the screen body along the thickness direction of the screen body.

3. The display panel according to claim 1 or 2, characterized in that, The number of the first hole is one or more.

4. The display panel according to claim 1, characterized in that, The groove coincides with the orthographic projection of the first hole onto the first region; And / or, the number of the grooves is the same as the number of the first holes.

5. The display panel according to claim 1, characterized in that, The thickness of the portion of the shim block corresponding to the groove is 0.3~0.8mm.

6. The display panel according to claim 1, characterized in that, The screen body is provided with an electrical connection component; the second region includes an un-drilled area adjacent to the first hole, and the electrical connection component is disposed in the un-drilled area; And / or, the second region includes a first sub-region and a second sub-region, the bending region, the first sub-region, and the second sub-region are connected in sequence, and the first hole is disposed in the first sub-region; the screen body includes a display area, and the display area includes the first region, the bending region, and the first sub-region.

7. The display panel according to claim 6, characterized in that, The number of the first holes is multiple, and the electrical connection assembly includes a trace, which is at least partially located between any two adjacent first holes.

8. A method for manufacturing a display panel, characterized in that, The display panel includes a screen body and a raised block. The screen body includes a first region, a second region, and a bent region connecting the first region and the second region. The second region is provided with a first hole. The raised block is located between the first region and the second region. The side of the raised block facing the second region is provided with a groove communicating with the first hole. The first hole and the groove are used to set terminal devices. The method for manufacturing the display panel includes: A display panel precursor is provided, the display panel precursor including a screen substrate for forming the screen body and a shim substrate for forming the shim, the shim substrate including a body area and a region to be removed, the region to be removed being bonded to the body area by a heat-resistant adhesive; The first hole is formed by laser cutting the first preset perforation area of ​​the screen substrate; and during the laser cutting process, the adhesive strength of the heat-reducing adhesive decreases after being heated, so that the area to be removed from the substrate of the shim block is removed from the body area, forming the groove.

9. A display device, characterized in that, The device includes the display panel and terminal device according to any one of claims 1-7, wherein the terminal device is at least partially located within the first hole.

Images