Display device and method of manufacturing the same

Abstract

The application provides a display device and a manufacturing method thereof. The display device comprises a display panel, a cover plate, and a protective adhesive layer. The display panel comprises a connected flat section and a bending section. The cover plate is arranged on one side of the display panel and comprises a planar area and a curved area located at the periphery of the planar area. The curved area comprises a double-folded area near the corner of the planar area. The protective adhesive layer is arranged between the display panel and the cover plate and covers the bending section. The orthographic projection of the protective adhesive layer on the display panel does not overlap with the orthographic projection of the double-folded area on the display panel. The display device and the manufacturing method thereof are simple in structure, convenient to manufacture, can effectively improve the wrinkle phenomenon of the double-folded area, ensure the display effect, reduce the manufacturing cost, and have a long service life.

Description

Technical Field

[0001] This application relates to the field of display technology, and in particular to a display device and a method for manufacturing the same. Background Technology

[0002] With the rapid expansion of the OLED display market, an increasing number of display products are flooding the market. Among them, quad-curved screens are highly praised by users for their immersive visual experience, high immersion, and excellent feel. "Quad-curved" refers to the shape of the cover plate, specifically a cover plate with curved surfaces on all four sides. It adds curved covers at the top and bottom ends to the curved left and right sides of a dual-curved screen to achieve a fully immersive visual effect. To achieve narrower bezels and a smoother feel, the cover plate of a quad-curved screen needs a design with "high depth and large curvature," which places higher demands on the bonding process. During the bonding process between the display panel and the cover plate, wrinkles often occur. These wrinkles affect the display effect, leading to screen failure and significantly increasing production costs. Therefore, there is an urgent need for a display device that can improve the wrinkling phenomenon. Summary of the Invention

[0003] In view of this, the purpose of this application is to provide a display device and a method for manufacturing the same.

[0004] A first aspect of this application provides a display device, comprising: a display panel including a straight section and a bent section connected together; a cover plate disposed on one side of the display panel, including a planar area and a curved area located on the outer periphery of the planar area, the curved area including a double-folded area near the corner of the planar area; and a protective adhesive layer disposed between the display panel and the cover plate, covering the bent section, wherein the orthographic projection of the protective adhesive layer on the display panel does not overlap with the orthographic projection of the double-folded area on the display panel.

[0005] In some embodiments, a polarizing layer is provided on the side of the display panel near the cover plate, and the protective adhesive layer is disposed against the polarizing layer in a direction parallel to the display panel.

[0006] In some embodiments, the distance between the orthographic projection of the protective adhesive layer on the display panel and the orthographic projection of the bi-fold area on the display panel is 1 mm to 4 mm.

[0007] In some embodiments, the two ends of the bent segment along the length direction are respectively provided with a double fold area; the protective adhesive layer includes an adhesive strip, one end of the adhesive strip along the length direction is disposed near one of the double fold areas, and the other end is disposed near the other double fold area.

[0008] In some embodiments, the protective adhesive layer includes at least two spaced-apart adhesive blocks; each end of the bent segment along its length is provided with a double-fold area, and an adhesive block is provided near each double-fold area.

[0009] In some embodiments, the protective adhesive layer comprises three spaced-apart adhesive blocks, with a spacing of 9 mm to 11 mm between adjacent adhesive blocks.

[0010] In some embodiments, the protective adhesive layer includes an adhesive core located in the middle and an adhesive wall located on the outer periphery of the adhesive core, wherein the adhesive viscosity of the adhesive wall is greater than that of the adhesive core, and the height of the adhesive wall is greater than or equal to the height of the adhesive core.

[0011] In some embodiments, the adhesive wall has a thickness of 0.09 mm to 0.11 mm and a height of 0.09 mm to 0.11 mm, and the adhesive core has a height of 0.05 mm to 0.09 mm.

[0012] In some embodiments, the bending radius of the bent section is Bending R, and the width of the protective adhesive layer is W. MCL The thickness of the display panel is t, which satisfies W. MCL =π(Bending R+t)+a, a≥0.3mm.

[0013] In some embodiments, the straight section includes a first straight section and a second straight section, the bent section is connected between the first straight section and the second straight section, and the display panel has a support layer on the side away from the cover plate, the support layer having a slot corresponding to the bent section.

[0014] A second aspect of this application provides a method for manufacturing a display device, comprising: forming an adhesive wall in a bent section of a display panel, forming an adhesive core within the adhesive wall, and forming a protective adhesive layer after the adhesive core and the adhesive wall are cured; and providing a cover plate on the side of the display panel near the protective adhesive layer, such that the protective adhesive layer is located between the cover plate and the display panel.

[0015] As described above, this application provides a display device and its manufacturing method. The display device includes: a display panel, comprising a straight section and a bent section connected together; a cover plate, disposed on one side of the display panel, comprising a planar area and a curved area located on the outer periphery of the planar area, the curved area including a double-folded area near the corner of the planar area; and a protective adhesive layer disposed between the display panel and the cover plate, covering the bent section. The orthographic projection of the protective adhesive layer on the display panel does not overlap with the orthographic projection of the double-folded area on the display panel. By ensuring that the orthographic projection of the protective adhesive layer on the display panel does not overlap with the orthographic projection of the double-folded area on the display panel, the protective adhesive layer is effectively shortened, reducing the compressive stress on the double-folded area caused by the protective adhesive layer, thereby reducing the risk of wrinkles appearing during display panel bonding. This display device and its manufacturing method have a simple structure, are easy to manufacture, can effectively improve the wrinkling phenomenon in the double-folded area, ensure display effect, reduce manufacturing cost, and have a long service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of a cover plate in the related art;

[0018] Figure 2 This is a top view of a fitting tool in related technologies;

[0019] Figure 3 for Figure 2 A cross-sectional schematic diagram of the bonding tool;

[0020] Figure 4 This is a schematic diagram of the structure of the cover plate and display panel in the related technology;

[0021] Figure 5 This is a schematic diagram of the structure of a display panel according to an embodiment of this application;

[0022] Figure 6 for Figure 5 A schematic diagram of the structure of the display panel and cover plate in conjunction;

[0023] Figure 7 This is a schematic cross-sectional view of a display device according to an embodiment of this application;

[0024] Figure 8 This is a schematic diagram of another display panel structure in an embodiment of this application;

[0025] Figure 9 for Figure 8 A schematic diagram of the structure of the display panel and cover plate.

[0026] Reference numerals in the attached diagram: 1. Display panel; 1-1. Bending section; 1-2. First straight section; 1-3. Second straight section; 2. Cover plate; 2-1. Flat area; 2-2. Curved area; 2-3. Double-fold area; 3. Protective adhesive layer; 3-1. Adhesive block; 3-2. Adhesive wall; 3-3. Adhesive core; 4. Polarizing layer; 5. Support layer; 5-1. Groove; 6. Optical adhesive. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] With the rapid expansion of the OLED display market, an increasing number of display products are rapidly entering the market. Among them, quad-curved screens are highly praised by users for their immersive visual experience, high immersion, and excellent feel. The "quad-curve" refers to the shape of the cover plate, specifically a cover plate with curved surfaces on all four sides. It adds curved covers at the top and bottom ends to the curved left and right sides of a dual-curved screen to achieve a fully immersive visual effect. The double-fold area of ​​a quad-curved screen refers to the overlapping point of the curvature of the top, bottom, left, and right corners. Within the double-fold area, the transition of curvature is related to the curvature of the top / bottom and left / right surfaces. To achieve a narrower black border and a smoother feel, the cover plate of a quad-curved screen needs to achieve a "high depth and large curvature" design, which places higher demands on the bonding process. During the bonding process between the display panel and the cover plate, wrinkles often occur. Wrinkles affect the display effect, leading to screen failure and significantly increasing production costs. Therefore, there is an urgent need for a display device that can improve the wrinkle problem.

[0030] like Figure 1The diagram shows a partial structural schematic of a cover plate 2 in related technologies. The central part of the cover plate 2 is a planar area 2-1, and the outer periphery is a curved area 2-2. The curvature of the left and right curved surfaces and the lower curved surface in the diagram all change unidirectionally along a certain direction. The four corners of the cover plate 2 are double-folded areas 2-3, as shown... Figure 1 As shown, this area has both left and right curvature changes and downward curvature, which is a superposition of curvature changes in multiple directions. Therefore, the curvature of the double fold area 2-3 comes from the overlap of left and right / up and down curvature. Its curvature change is the most complex part of the entire cover plate 2, and also the most difficult part to fit firmly during the bonding process.

[0031] Currently, the display panel 1 and the four-curved cover plate 2 are typically bonded using a contour bonding tool (PAD), such as... Figure 2 The diagram shows a partial structural schematic of a bonding tool. Based on the curvature of the four radius corners of the four-curved cover plate 2, the radius corners of the bonding tool are shaped to fit the display panel 1 and the cover plate 2. Figure 3 The diagram shows a cross-sectional view of the bonding tool. It can be seen that both ends of the tool are contoured. During bonding, the cover plate 2 is first fixed, and then the display panel 1 is pressed against the inner surface of the cover plate 2 by the bonding tool, thus achieving a curved display effect and optimal visual experience. However, if the stress on the display panel 1 is too great or the bonding step difference is too large during bonding in the curved area 2-2, wrinkles will appear, affecting the display effect.

[0032] like Figure 4 The diagram shows the structure after the cover plate 2 and the display panel 1 are attached. At this time, the display panel 1 has not been bent. A protective adhesive layer 3 is set in the bending section 1-1 of the display panel 1. The protective adhesive layer 3 (MCL, Micro Coating Layer) can prevent the display panel 1 from cracking when it is bent, and can also isolate moisture.

[0033] In the process of developing this application, it was discovered that the current protective adhesive layer 3 is quite long, typically extending into the double-fold area 2-3 of the cover plate 2. When the display panel 1 is attached to the cover plate 2 using a bonding tool, the protective adhesive in the double-fold area 2-3 exerts significant compressive stress on the display panel 1 within the double-fold area 2-3. Furthermore, due to the fluidity of the adhesive during the coating process, the surface of the protective adhesive layer 3 is not completely flat but rather a wavy curved surface. The display panel 1 within the double-fold area 2-3 experiences even greater compressive stress from the protective adhesive layer 3. This stress, combined with the height difference in the double-fold area 2-3, causes wrinkles to form on the display panel 1 within the double-fold area 2-3, potentially leading to screen failure. It is advisable to eliminate the protective adhesive layer 3 within the double-fold area 2-3. This would reduce the compressive stress in the double-fold area 2-3 during bonding, allowing for better adhesion between the display panel 1 and the cover plate 2 and preventing wrinkles.

[0034] The following describes specific embodiments in conjunction with... Figures 5 to 9 The technical solution of this application will be described in detail below.

[0035] Some embodiments of this application provide a display device, such as... Figures 5 to 7 As shown, it includes: a display panel 1, including a straight section and a bent section 1-1 connected together; a cover plate 2, disposed on one side of the display panel 1, including a flat area 2-1 and a curved area 2-2 located on the outer periphery of the flat area 2-1, the curved area 2-2 including a double-folded area 2-3 near the corner of the flat area 2-1; and a protective adhesive layer 3, disposed between the display panel 1 and the cover plate 2, covering the bent section 1-1, wherein the orthographic projection of the protective adhesive layer 3 on the display panel 1 does not overlap with the orthographic projection of the double-folded area 2-3 on the display panel 1.

[0036] like Figure 7 As shown, the display device includes a display panel 1, a cover plate 2, and a protective adhesive layer 3. The L direction is the length direction of the protective adhesive layer 3, and the W direction is the width direction of the protective adhesive layer 3. The display panel 1 in the figure is the display panel 1 before the bending process. Figure 5 As shown, the display panel 1 includes a straight section and a bent section 1-1 connected together. The straight section includes a first straight section 1-2 and a second straight section 1-3. The first straight section 1-2 is mainly used to display the image. The second straight section 1-3 is used to house circuit boards, driver chips (ICs), various components, etc., and is used to control the display image of the first straight section 1-2. After the bent section 1-1 is bent in the opposite direction, the second straight section 1-3 can be bent to the back of the first straight section 1-2, thereby achieving the effect of a narrow bezel.

[0037] Cover plate 2 includes a planar area 2-1 in the middle and a curved area 2-2 on the outer periphery, such as Figure 1 As shown, the top cross-sectional shape of the cover plate in the planar area 2-1 is straight, and the top cross-sectional shape of the cover plate in the curved area 2-2 is arc-shaped. The area located at the corner of the planar area 2-1 in the curved area 2-2 is the double-fold area 2-3. The top cross-sectional shape of the cover plate in the double-fold area 2-3 is also arc-shaped, but there are arc changes from both the left and right directions and the up and down directions.

[0038] like Figure 5As shown, a protective adhesive layer 3 is provided on the display panel 1, covering the bent section 1-1. This prevents the bent section 1-1 from cracking during bending and also isolates it from moisture. The orthographic projection of the protective adhesive layer 3 on the display panel 1 does not overlap with the orthographic projection of the double-fold area 2-3 on the display panel 1. Compared to related designs, this shortens the length of the protective adhesive layer 3, meaning it does not enter the double-fold area 2-3. This reduces the compressive stress on the double-fold area 2-3 caused by the protective adhesive layer 3, thereby lowering the risk of wrinkles appearing during the bonding of the display panel 1.

[0039] The display device can be a product or component with display function, such as a mobile phone, tablet computer, laptop computer, digital camera, or navigator. The display device has a simple structure, is easy to manufacture, can effectively improve the wrinkle phenomenon in the double fold zone 2-3, ensure the display effect, reduce the manufacturing cost, and has a long service life.

[0040] In some embodiments, such as Figure 7 As shown, a polarizing layer 4 is provided on the side of the display panel 1 near the cover plate 2, and the protective adhesive layer 3 and the polarizing layer 4 are disposed against each other in a direction parallel to the display panel 1.

[0041] like Figure 7 As shown, a polarizing layer 4 is provided on the side of the display panel 1 near the cover plate 2, and a protective adhesive layer 3 is disposed against the polarizing layer 4 to improve space utilization. Because the protective adhesive layer 3 does not enter the double fold area 2-3, its length is shortened, and the contact area with the polarizing layer 4 is also reduced, which can reduce cracking of the bending section 1-1 caused by the siphon effect.

[0042] In some embodiments, the orthographic projection of the protective adhesive layer 3 on the display panel 1 and the orthographic projection of the bi-fold area 2-3 on the display panel 1 are separated by a gap of 1mm to 4mm.

[0043] The orthographic projection of the protective adhesive layer 3 on the display panel 1 and the orthographic projection of the bi-fold area 2-3 on the display panel 1 can be spaced apart, for example, 1mm, 2mm, 3mm, or 4mm, etc., without specific limitation. When the display panel 1 and the cover plate 2 are bonded, the protective adhesive layer 3 may be squeezed into the bi-fold area 2-3, which may still cause wrinkles in that area. By providing capacity space through the gap setting, the compression of the bi-fold area 2-3 by the protective adhesive layer 3 can be further reduced. The gap size should not be too large to avoid the protective adhesive layer 3 failing to isolate moisture and providing too weak protection for the bending section 1-1, resulting in bending cracks at the end of the bending section 1-1.

[0044] In some embodiments, such as Figure 6As shown, the two ends of the bending segment 1-1 along the length direction are respectively provided with a double fold area 2-3; the protective adhesive layer 3 includes an adhesive strip, one end of the adhesive strip along the length direction is set close to one of the double fold areas 2-3, and the other end is set close to the other double fold area 2-3.

[0045] like Figure 6 As shown, double fold areas 2-3 are provided on both sides of the lower part of the cover plate 2. The protective adhesive layer 3 includes a complete adhesive strip. The two ends of the adhesive strip are respectively located close to the two double fold areas 2-3, and neither of them extends into the double fold areas 2-3 at both ends. This can reduce the squeezing force on both sides of the double fold areas 2-3, and at the same time protect the internal components of the display panel 1 as much as possible, isolate moisture, and prevent the display panel 1 from cracking when bent.

[0046] like Figure 6 As shown, the double-fold area 2-3 and the end of the adhesive strip are abutted together. At this time, the intersection of the extension line of the long side of the adhesive strip and the double-fold area 2-3 is the first intersection point. The distance between the first intersection point and the short side of the adhesive strip is D1. This distance is also the length of the display panel 1 extending into the double-fold area 2-3. D1 is, for example, 5mm to 7mm, and is not specifically limited. No protective adhesive is applied to the double-fold area 2-3. This is done to reduce the compressive stress on the display panel 1 from the protective adhesive layer 3 within the double-fold area 2-3 during bonding, thereby reducing the risk of wrinkles on the display panel 1. In addition, narrowing the protective adhesive layer 3 on both sides can reduce the contact area between the protective adhesive layer 3 and the polarizing layer 4, thereby effectively reducing bending cracks caused by the siphon effect.

[0047] In some embodiments, such as Figure 9 As shown, the protective adhesive layer 3 includes at least two spaced adhesive blocks 3-1; the two ends of the bent section 1-1 along the length direction are respectively provided with a double fold area 2-3, and an adhesive block 3-1 is provided near each double fold area 2-3.

[0048] The protective adhesive layer 3 includes multiple spaced adhesive blocks 3-1, such as two, three, or four. The adhesive blocks 3-1 can be set according to the components of the display panel 1 to provide protection. The multiple spaced adhesive blocks 3-1 further reduce the pressure of compression, avoid wrinkling, and reduce the contact area with the polarizing layer 4, effectively reducing bending cracks. In addition, the spaced adhesive block 3-1 design can also provide more capacity space, preventing the protective adhesive layer 3 from moving when it is squeezed, which would cause the protective adhesive layer 3 to accumulate and thicken, further improving bending cracks.

[0049] like Figure 9As shown, a glue block 3-1 is provided near each double-fold area 2-3. This ensures that glue blocks 3-1 are provided at both ends of the bending section 1-1, preventing the display panel 1 from cracking when bent. Based on this, glue blocks 3-1 may not be provided in the middle of the bending section 1-1, or they may be provided as needed, for example... Figure 9 Three adhesive blocks 3-1 are set up. The distance between two adjacent adhesive blocks 3-1 is D2, which is, for example, 9mm to 11mm, etc., and is not limited to any specific value. In the figure, L1 is the length of the adhesive block 3-1 near the double fold area 2-3, which is, for example, 9mm to 11mm, etc., and L2 is the length of the middle adhesive block 3-1, which is, for example, 15.6mm to 17.6mm, etc., and is not limited to any specific value.

[0050] In some embodiments, the protective adhesive layer 3 includes an adhesive core 3-3 located in the middle and an adhesive wall 3-2 located on the outer periphery of the adhesive core 3-3. The adhesive viscosity of the adhesive wall 3-2 is greater than that of the adhesive core 3-3, and the height of the adhesive wall 3-2 is greater than or equal to the height of the adhesive core 3-3.

[0051] like Figure 8 As shown, the structure of the adhesive block 3-1 can be configured as an adhesive core 3-3 in the middle and an adhesive wall 3-2 around the outer periphery of the adhesive core 3-3. After the size of the adhesive block 3-1 is determined, a high-viscosity adhesive wall 3-2 can be set first, and then a low-viscosity adhesive core 3-3 can be injected into the adhesive wall 3-2. The higher the viscosity of the adhesive, the worse its flowability. By setting a high-viscosity adhesive wall 3-2 to surround the low-viscosity adhesive core 3-3 to form a protective adhesive layer 3, accurate adhesive injection can be ensured, preventing adhesive from migrating to other positions and increasing the pressure-bearing area. Similarly, the adhesive strip can also be manufactured according to the structure of the adhesive core 3-3 and the adhesive wall 3-2, which will not be elaborated here.

[0052] like Figure 7 As shown, the height of the adhesive wall 3-2 is greater than the height of the adhesive core 3-3, which can also ensure accurate adhesive injection and avoid adhesive being moved to other positions, causing wrinkles.

[0053] In some embodiments, such as Figure 8 As shown, the thickness of the adhesive wall 3-2 is 0.09mm to 0.11mm, and the height is 0.09mm to 0.11mm, while the height of the adhesive core 3-3 is 0.05mm to 0.09mm.

[0054] like Figure 8As shown, T represents the thickness of the adhesive wall 3-2, which can be, for example, 0.09mm, 0.10mm, or 0.11mm, etc., without specific limitations, to ensure the structural stability of the adhesive wall 3-2. The height of the adhesive wall 3-2 is, for example, 0.09mm, 0.10mm, or 0.11mm, and the height of the adhesive core 3-3 is, for example, 0.05mm, 0.06mm, 0.07mm, 0.08mm, or 0.09mm, to prevent the low-viscosity adhesive core 3-3 from overflowing from the adhesive wall 3-2 during dispensing.

[0055] In some embodiments, such as Figure 8 As shown, the bending radius of the bent segment 1-1 is Bending R, and the width of the protective adhesive layer 3 is W. MCL The thickness of the display panel 1 is t, which satisfies W MCL =π(Bending R+t)+a, a≥0.3mm.

[0056] The thickness t of display panel 1, for example, is 0.012mm, and can be adjusted according to product settings; in W MCL The calculation formula includes a parameter 'a', which can be 0.3mm, 0.5mm, 0.7mm, or 0.95mm, etc. This is to ensure that the protective adhesive layer 3 covers the bent section 1-1. Because the adhesive application process has coating tolerances, if 'a' is less than 0.3mm, for example, set to 0.2mm, some areas of the protective adhesive layer 3 will not cover the bent section 1-1. Additionally, the display panel 1 typically has an electrostatic discharge (ESD) protection zone. The protective adhesive layer 3 must not exceed the ESD zone setting to prevent corrosion of the ESD zone, thus limiting W. MCL The value of a is less than or equal to the distance between the polarizing layer 4 and the ESD area. For example, for a display panel 1 with a thickness of 0.012mm, the upper limit of the value of a can be set to 0.95mm.

[0057] In some embodiments, such as Figure 5 As shown, the straight section includes a first straight section 1-2 and a second straight section 1-3, and the bent section 1-1 connects the first straight section 1-2 and the second straight section 1-3, as shown. Figure 7 As shown, the display panel 1 has a support layer 5 on the side away from the cover plate 2 to ensure structural stability. The support layer 5 has a slot 5-1 corresponding to the bending section 1-1 to facilitate bending. The display device also includes an optical adhesive 6, which is located between the cover plate 2 and the polarizing layer 4.

[0058] In some embodiments, the display panel 1 includes: a thin-film encapsulation layer disposed on the outermost layer of the display panel 1, used to block external dust and moisture, etc., to prevent external dust and moisture from affecting the internal film layers; a thin-film transistor array layer disposed on one side of the thin-film encapsulation layer; and an OLED device layer disposed on the side of the thin-film transistor array layer away from the thin-film encapsulation layer, including multiple OLED display devices. Each OLED display device includes an anode layer, a cathode layer, a light-emitting functional layer, an electron transport layer, a hole transport layer, and a hole injection layer. The anode layer is electrically connected to the drain of the thin-film transistor array layer. The cathode layer is made of a low work function material, which can improve the efficiency of electron injection and reduce the Joule heat generated during OLED operation, thereby improving the device lifespan.

[0059] The thin-film transistor array layer includes a first gate insulating layer and a second gate insulating layer. The material of the gate insulating layer may include silicon compounds or metal oxides. The thin-film transistor array layer includes an interlayer dielectric layer, and the material of the interlayer dielectric layer may include, for example, silicon compounds or metal oxides.

[0060] The thin-film transistor array layer includes a first electrode layer, which may include the source and drain of each transistor in the display area. The source electrodes are electrically connected to each other, and the drain electrodes are electrically connected to each other. The first electrode layer may include metal, alloy, metal nitride, conductive metal oxide, transparent conductive material, etc. For example, the first electrode layer may be a single layer or multiple layers made of metal, such as Mo / Al / Mo or Ti / Al / Ti.

[0061] The thin-film encapsulation layer includes, for example, a first inorganic encapsulation layer CVD1, a second inorganic encapsulation layer CVD2, and an organic encapsulation layer IJP. The second inorganic encapsulation layer CVD2 is located on the side of the first inorganic encapsulation layer CVD1 away from the substrate, and the organic encapsulation layer IJP is located between the first inorganic encapsulation layer CVD1 and the second inorganic encapsulation layer CVD2. Optionally, the first inorganic encapsulation layer CVD1 and the second inorganic encapsulation layer CVD2 extend to the peripheral region and cover the barrier block; the organic encapsulation layer IJP extends to the peripheral region and is located within the area surrounded by the barrier block. Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0062] In the embodiments of this application, "film" and "layer" can be interchanged. For example, sometimes "conductive layer" can be replaced with "conductive film". Similarly, sometimes "insulating film" can be replaced with "insulating layer". The scale of the drawings in the embodiments of this application can be used as a reference in actual processes, but is not limited thereto. For example, the aspect ratio of the channel, the thickness and spacing of each film layer can be adjusted according to actual needs. The number of pixels in the array substrate and the number of sub-pixels in each pixel are not limited to the quantities shown in the figures. The drawings described in the embodiments of this application are only structural schematic diagrams, and one method in the embodiments of this application is not limited to the shapes or values ​​shown in the drawings.

[0063] Furthermore, given that details have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that embodiments of this application may be practiced without these details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0064] In some embodiments of this application, a method for manufacturing a display device is provided, comprising: forming an adhesive wall 3-2 in a bent section 1-1 of a display panel 1, forming an adhesive core 3-3 within the adhesive wall 3-2, and forming a protective adhesive layer 3 after the adhesive core 3-3 and the adhesive wall 3-2 are cured; and providing a cover plate 2 on the side of the display panel 1 near the protective adhesive layer 3, such that the protective adhesive layer 3 is located between the cover plate 2 and the display panel 1.

[0065] For the protective adhesive layer 3, an adhesive wall 3-2 can be formed first through a patterning process, and then the adhesive core 3-3 can be coated to achieve precise adhesive injection at the coating position.

[0066] The "patterning process" described in this application includes, for metallic, inorganic, or transparent conductive materials, processes such as photoresist coating, mask exposure, development, etching, and photoresist stripping; for organic materials, it includes processes such as organic material coating, mask exposure, and development. Deposition can be performed using any one or more of sputtering, evaporation, and chemical vapor deposition; coating can be performed using any one or more of spraying, spin coating, and inkjet printing; and etching can be performed using any one or more of dry and wet etching, without limitation.

[0067] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0068] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, well-known power / ground connections to other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be illustrated in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be entirely within the understanding of those skilled in the art). While specific details have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application may be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0069] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. The embodiments of this application are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A display device, characterized in that, include: The display panel includes the connected straight and bent sections; A cover plate is disposed on one side of the display panel, including a planar area and a curved area located on the outer periphery of the planar area. The curved area includes a double-folded area near the corner of the planar area, and the curvature of the double-folded area comes from the overlap of the left-right curvature and the up-down curvature. A protective adhesive layer is disposed between the display panel and the cover plate, covering the bent section. The orthographic projection of the protective adhesive layer on the display panel does not overlap with the orthographic projection of the double-fold area on the display panel. A double-fold area is respectively provided at each end of the bent section along its length. The protective adhesive layer is configured as follows: The protective adhesive layer includes an adhesive strip, one end of which is disposed near one of the double-fold areas along its length, and the other end of which is disposed near another double-fold area, wherein the double-fold areas and the end of the adhesive strip are disposed abutting against each other; Alternatively, the distance between the orthographic projection of the protective adhesive layer on the display panel and the orthographic projection of the bi-fold area on the display panel is 1mm to 4mm; Alternatively, the protective adhesive layer comprises at least two spaced-apart adhesive blocks, with one of the adhesive blocks located near each of the bifolded areas; Alternatively, the protective adhesive layer includes an adhesive core located in the middle and an adhesive wall located on the outer periphery of the adhesive core, wherein the adhesive viscosity of the adhesive wall is greater than that of the adhesive core, and the height of the adhesive wall is greater than or equal to the height of the adhesive core.

2. The display device according to claim 1, characterized in that, The display panel has a polarizing layer on the side near the cover plate, and the protective adhesive layer is disposed against the polarizing layer in a direction parallel to the display panel.

3. The display device according to claim 1, characterized in that, The protective adhesive layer comprises three spaced-apart adhesive blocks, with a spacing of 9 mm to 11 mm between adjacent adhesive blocks.

4. The display device according to claim 1, characterized in that, The adhesive wall has a thickness of 0.09 mm to 0.11 mm and a height of 0.09 mm to 0.11 mm, while the adhesive core has a height of 0.05 mm to 0.09 mm.

5. The display device according to claim 1, characterized in that, The bending radius of the bent section is Bending R, and the width of the protective adhesive layer is W. MCL The thickness of the display panel is t, which satisfies W. MCL =π(Bending R+t)+a, a≥0.3mm.

6. The display device according to claim 2, characterized in that, The straight section includes a first straight section and a second straight section, and the bent section is connected between the first straight section and the second straight section. The display panel has a support layer on the side away from the cover plate, and the support layer has a slot corresponding to the bent section.

7. A method for manufacturing a display device as described in claim 1 or 4, characterized in that, include: A glue wall is formed in the bent section of the display panel, and a glue core is formed inside the glue wall. After the glue core and the glue wall are cured, a protective glue layer is formed. A cover plate is provided on the side of the display panel near the protective adhesive layer, so that the protective adhesive layer is located between the cover plate and the display panel.

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