Display device

Abstract

The invention relates to a display device. The display device comprises a display panel, a middle frame and first protective glue. The display panel comprises a first substrate, a packaging piece and a second substrate which are sequentially arranged in the thickness direction of the display panel. The packaging piece is located at the edge of the first substrate; the middle frame comprises a frame part, and the frame part is located on the periphery of the display panel; the first protective glue is located between the display panel and the frame part and annularly arranged on at least part of the periphery of the display panel; the first protective glue comprises a first surface deviating from one side of the frame part, and the orthographic projection of the first surface in the thickness direction of the display panel is located on the periphery of the orthographic projection of the packaging part in the thickness direction of the display panel. Therefore, according to the display device provided by the invention, the anti-falling performance of the display device can be improved.

Description

Technical Field

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

[0002] OLED (Organic Light Emitting Diode) display panels have many advantages, such as being all-solid-state, actively emitting light, having a fast response time, high contrast, no viewing angle limitations, and being able to achieve flexible displays. They are a new type of display technology that was developed in the mid-20th century and are widely used in people's daily production and life.

[0003] In related technologies, the display device includes a mid-frame and a display panel, with the display panel mounted on the mid-frame. However, the drop resistance of the aforementioned display device needs improvement. Summary of the Invention

[0004] Therefore, it is necessary to provide a display device that can improve the drop resistance of the display device.

[0005] This application provides a display device including a display panel, a mid-frame, and a first protective adhesive. The display panel includes a first substrate, a package, and a second substrate arranged sequentially along the thickness direction of the display panel. The package is located at the edge of the first substrate. The mid-frame includes a frame portion located on the outer periphery of the display panel. The first protective adhesive is located between the display panel and the frame portion and is disposed around at least a portion of the outer periphery of the display panel. The first protective adhesive includes a first surface on a side away from the frame portion. The orthographic projection of the first surface along the thickness direction of the display panel is located on the outer periphery of the orthographic projection of the package along the thickness direction of the display panel.

[0006] The display device provided in this application embodiment, by projecting the first surface along the thickness direction of the display panel onto the outer periphery of the encapsulation along the thickness direction of the display panel, causes the inner edge of the first protective adhesive facing the display panel to be moved to the outer periphery of the encapsulation. The first protective adhesive will no longer press against the weakest part of the encapsulation along the thickness direction of the display panel, so that the stress of the display device is no longer concentrated at the inner edge of the encapsulation. The stress concentration point is transferred to the outer side of the encapsulation, avoiding the weak encapsulation. The stress on the encapsulation is reduced, thereby improving the overall strength of the display device. This can prevent the display panel from breaking at the encapsulation and improve the drop resistance of the display device. Attached Figure Description

[0007] Figure 1 A partial cross-sectional view of a display device provided in an embodiment of this application.

[0008] Figure 2 Another partial cross-sectional view of the display device provided in an embodiment of this application.

[0009] Figure 3 Another partial cross-sectional view of the display device provided in an embodiment of this application.

[0010] Figure 4 Another partial cross-sectional view of the display device provided in an embodiment of this application.

[0011] Figure 5 This is a partial cross-sectional view of the display module provided in an embodiment of this application.

[0012] Figure 6 Another partial cross-sectional view of the display device provided in an embodiment of this application.

[0013] Figure 7 Another partial cross-sectional view of the display module provided in the embodiments of this application.

[0014] Figure 8 Another partial cross-sectional view of the display module provided in the embodiments of this application.

[0015] Figure 9 for Figure 8 An enlarged structural diagram of point A.

[0016] Figure 10 Another partial cross-sectional view of the display device provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures:

[0018] 100. Display device; 101. Display module; 110. First protective adhesive; 111. First surface; 112. Second surface; 120. Second protective adhesive; 130. Display panel; 131. First substrate; 132. Second substrate; 133. Encapsulation component; 140. Mid-frame; 141. Frame portion; 142. Support portion; 151. First gap; 152. Second gap; 153. Third gap; 154. Fourth gap ; 155, limiting groove; 161, first fitting part; 162, second fitting part; 171, protrusion; 1711, first side surface; 1712, second side surface; 1713, sub-protrusion; 172, groove; 1721, first groove sidewall; 1722, second groove sidewall; 180, fixing adhesive; 191, cover plate; 192, polarizer; 193, adhesive layer; 194, composite film; d1, first distance; d2, second distance. Detailed Implementation

[0019] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] When describing positional relationships, unless otherwise specified, when an element, such as a layer, film, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements present. Furthermore, when a layer is referred to as being "below" another layer, it may be directly below it or there may be one or more intermediate elements present. It is also understood that when a layer is referred to as being "between" two layers, it may be the only layer between the two layers, or there may be one or more intermediate elements present.

[0022] When using the terms “including,” “having,” and “comprising” as described herein, another component may be added unless explicitly qualifying terms such as “only,” “consisting of,” etc. are used. Unless otherwise stated, singular terms may include plural forms and should not be construed as having a quantity of one.

[0023] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of this application, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0024] It should also be understood that, in interpreting an element, although not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of a particular value as determined by a person skilled in the art. For example, "approximately," "about," or "substantially" can mean within one or more standard deviations, without limitation herein.

[0025] Furthermore, in the instruction manual, the phrase "planar distribution diagram" refers to the diagram when the target part is viewed from above, and the phrase "cross-sectional diagram" refers to the diagram when the target part is viewed from the side as a cross-section taken by vertically cutting the target part.

[0026] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0027] As described in the background section, in related technologies, a display device includes a display panel and a mid-frame. The display panel includes a first substrate, a fringe, and a second substrate. The fringe is located between the first and second substrates and at their edges. The mid-frame includes a bezel located on the outer periphery of the display panel. A sealant is formed between the bezel and the display panel using injection molding. The requirement for a narrow bezel can be met by compressing the distance between the bezel and the display panel. For example, using low-pressure injection molding (LIPO) to form the sealant can reduce the distance between the bezel and the display panel. Furthermore, a portion of the sealant is applied to the backlight side of the display panel to extend the sealant's dimension along the direction from the display panel to the bezel, thereby ensuring the airtightness requirements after the display panel and mid-frame are bonded while reducing the distance between the bezel and the display panel. The inner edge of the encapsulation material and the outer edge of the display panel along the direction from the display panel to the frame are equal in size to the size of the sealant extending to the backlight side of the display panel along the direction from the display panel to the frame, such that the inner edge of the encapsulation material and the inner edge of the sealant located on the backlight side of the display panel coincide along the thickness direction of the display panel.

[0028] However, since the inner edge of the encapsulation material and the inner edge of the sealant on the backlight side of the display panel coincide along the thickness direction of the display panel, the inner edge of the encapsulation material becomes a stress concentration point when the whole device is dropped. At the same time, the display panel is a rigid display panel, and the first substrate, the second substrate and the encapsulation material are all rigid components. The encapsulation material is the weakest point of the rigid display panel. When the encapsulation material is subjected to force, the stress is transmitted along the rigid encapsulation material to the inner edge of the encapsulation material. The stress is easily concentrated at the inner edge of the encapsulation material, which can easily cause the rigid display panel to break from the inner edge of the encapsulation material.

[0029] Based on the aforementioned technical problems, the inventors discovered that by projecting the first surface along the thickness direction of the display panel onto the outer periphery of the projection of the encapsulation along the thickness direction of the display panel, the inner edge of the first protective adhesive facing the display panel is moved to the outer periphery of the encapsulation. The first protective adhesive will no longer press against the weakest part of the encapsulation along the thickness direction of the display panel, thus preventing stress concentration on the inner edge of the encapsulation. Instead, the stress concentration point is shifted to the outer side of the encapsulation, avoiding the weakest part. This reduces the stress on the encapsulation, thereby improving the overall strength of the display device and preventing the display panel from cracking at the encapsulation, thus improving the drop resistance of the display device.

[0030] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] The following is in conjunction with the appendix Figures 1-10 The display device provided in the embodiments of this application will be described.

[0032] See Figure 1 This application provides a display device 100, which includes a display panel 130. The display panel 130 includes a first substrate 131, a package 133, and a second substrate 132 arranged along the thickness direction (i.e., direction Z) of the display panel 130. The package 133 (Frit) is located between the first substrate 131 and the second substrate 132, and the package 133 is located at the edge of the first substrate 131 and the second substrate 132.

[0033] In some embodiments, a plurality of light-emitting devices may be disposed between the first substrate 131 and the second substrate 132, for example, the plurality of light-emitting devices may be arranged in an array. The plurality of light-emitting devices may include a first light-emitting device, a second light-emitting device, and a third light-emitting device that emit different colors. The plurality of light-emitting devices includes, but is not limited to, red light-emitting devices, green light-emitting devices, and blue light-emitting devices. In other examples, the plurality of light-emitting devices may also include white light-emitting devices.

[0034] In some embodiments, the first substrate 131 and the light-emitting device may be provided with an array layer, in which a pixel circuit is provided. The pixel circuit is electrically connected to the light-emitting device and can be used to drive the light-emitting device to emit light.

[0035] See Figure 1 In some embodiments, the first substrate 131 and the second substrate 132 protrude from the sidewall of the package 133 relative to the package 133 along the direction from the display panel 130 to the frame portion 141, and a fourth gap 154 ​​is formed between the first substrate 131 and the second substrate 132 located on the outer periphery of the package 133. In other embodiments, the sidewalls of the first substrate 131 and the second substrate 132 may be flush with the sidewall of the package 133.

[0036] For example, the display panel 130 can be a rigid display panel. The first substrate 131 and the second substrate 132 can also be rigid substrates. For example, the materials of the first substrate 131 and the second substrate 132 can include glass. The material of the encapsulation 133 can include glass frit. The encapsulation 133 is disposed between the first substrate 131 and the second substrate 132, and the first substrate 131 and the second substrate 132 are sealed by welding the encapsulation 133 together. The encapsulation 133 of the rigid display panel 130 is a rigid component and is a weak point in the strength of the display panel 130. If the stress is concentrated in the encapsulation 133, the display panel 130 is prone to breakage at the encapsulation 133.

[0037] join Figure 1 The display device 100 includes a middle frame 140 and a first protective adhesive 110. The middle frame 140 includes a border portion 141, which is located on the outer periphery of the display panel 130 and can limit the display panel 130 to a certain extent. The first protective adhesive 110 is located between the display panel 130 and the border portion 141, and the first protective adhesive 110 is arranged around at least a portion of the outer periphery of the display panel 130. The first protective adhesive 110 can protect the display panel 130 and help prevent water and oxygen from entering the display device 100. The first protective adhesive 110 includes a first surface 111 on the side opposite to the frame portion 141. The orthographic projection of the first surface 111 along the thickness direction of the display panel 130 is located on the outer periphery of the orthographic projection of the encapsulation 133 along the thickness direction of the display panel 130. In this way, the first protective adhesive 110 is moved from the inner edge (i.e., the first surface 111) on the side facing the display panel 130 to the outer periphery of the encapsulation 133. The first protective adhesive 110 will no longer press against the weakest part of the encapsulation 133 of the display panel 130 along the thickness direction of the display panel 130. As a result, the stress of the display device 100 is no longer concentrated on the inner edge of the encapsulation 133. The stress concentration point is transferred to the outer side of the encapsulation 133 (e.g., the outer edge of the display panel 130), avoiding the weak encapsulation 133. The stress on the encapsulation 133 is reduced, thereby improving the overall strength of the display device 100. This can prevent the display panel 130 from breaking from the encapsulation 133 and improve the drop resistance of the display device 100.

[0038] Wherein, the orthographic projection of the first surface 111 along the thickness direction of the display panel 130 is located on the outer periphery of the orthographic projection of the encapsulation 133 along the thickness direction of the display panel 130. This can mean that: the inner edge of the orthographic projection of the first protective adhesive 110 along the thickness direction of the display panel 130 coincides with the outer edge of the orthographic projection of the encapsulation 133 along the thickness direction of the display panel 130; or, the inner edge of the orthographic projection of the first protective adhesive 110 along the thickness direction of the display panel 130 does not coincide with the outer edge of the orthographic projection of the encapsulation 133 along the thickness direction of the display panel 130, and the orthographic projection of the first protective adhesive 110 along the thickness direction of the display panel 130 is located on the outer side of the orthographic projection of the encapsulation 133 along the thickness direction of the display panel 130.

[0039] For example, the first protective adhesive 110 can be ring-shaped. The first protective adhesive 110 is disposed around the entire outer periphery of the display panel 130, so that the protective effect of the first protective adhesive 110 is better.

[0040] For example, the first protective adhesive 110 can be made by low-pressure injection molding. Low-pressure injection molding can improve the dimensional accuracy of the first protective adhesive 110, and realize precise control and reduction of the size of the first protective adhesive 110. This reduces the size of the first protective adhesive 110 along the direction from the display panel 130 to the frame portion 141, making it easier to move the inner edge of the first protective adhesive 110 to the outer side of the encapsulation 133.

[0041] See Figure 1 In the embodiment with a fourth gap 154, the first protective adhesive 110 may be located within the fourth gap 154 ​​to improve the connection stability between the first protective adhesive 110 and the display panel 130. Alternatively, the first protective adhesive 110 may not be located within the fourth gap 154.

[0042] See Figure 1 In some embodiments, the middle frame 140 includes a support portion 142, a portion of which is located on one side of the display panel 130 in the thickness direction, specifically on the backlight side of the display panel 130. The support portion 142 may also be located on one side of the bezel portion 141 along the thickness direction of the display panel 130. A first protective adhesive 110 is located on the side of the support portion 142 facing the bezel portion 141. Thus, the support portion 142 forms a rigid support surface for the display panel 130, and the first protective adhesive 110 adheres to the surface of the support portion 142 facing the bezel portion 141. The support portion 142 supports and limits the first protective adhesive 110, preventing displacement, warping, or detachment along the thickness direction due to the first protective adhesive being merely sandwiched between the display panel 130 and the bezel portion 141, thus ensuring the integrity of the circumferential arrangement of the first protective adhesive 110.

[0043] For example, both the support portion 142 and the frame portion 141 can be ring-shaped.

[0044] See Figure 1 In some embodiments, a portion of the first protective adhesive 110 is located between the surface of the display panel 130 facing the support portion 142 and the support portion 142. Thus, the first protective adhesive 110 extends from the sidewall of the display panel 130 to the backlight side of the display panel 130, increasing the coverage area of ​​the first protective adhesive 110 and making the connection between the first protective adhesive 110 and the display panel 130 and the support portion 142 tighter. Furthermore, it helps to extend the path for water and oxygen intrusion, allowing the first protective adhesive 110 to better block external water and oxygen intrusion, thereby extending the service life of the display device 100.

[0045] See Figure 2 In other embodiments, the thickness of the first protective adhesive 110 between the surface of the display panel 130 facing the support portion 142 and the support portion 142 is 0. In this way, the first protective adhesive 110 does not need to extend to the backlight side of the display panel 130, and there is no need to reserve the thickness space of the first protective adhesive 110 on the backlight side of the display panel 130. This is beneficial to compressing the overall size of the display device 100 along the thickness direction, which is beneficial to the thin and light design requirements of the display device 100. In addition, the material used for the first protective adhesive 110 can be reduced, which is beneficial to reducing the material cost of the first protective adhesive 110.

[0046] See Figure 4 and Figure 5 For example, the first protective adhesive 110 can be formed on the display panel 130 by low-pressure injection molding to form the display module 101, and then the middle frame 140 of the display module 101 can be assembled together.

[0047] See Figure 4 and Figure 5 In some embodiments, there is a first gap 151 between the first protective adhesive 110 and the frame portion 141. In this way, when assembling the display module 101 and the middle frame 140, the first gap 151 can serve as an assembly gap, avoiding rigid compression between the first protective adhesive 110 and the frame portion 141, and providing operating space for the assembly of the first protective adhesive 110 and the frame portion 141, thus avoiding assembly difficulties caused by dimensional deviations or structural interference.

[0048] See Figure 6In some embodiments, the display device 100 includes at least one second protective adhesive 120, which is located in the first gap 151 and surrounds at least a portion of the outer periphery of the first protective adhesive 110. The second protective adhesive 120 abuts against the first protective adhesive 110 and the frame portion 141. Thus, the first protective adhesive 110 achieves a basic seal around the display panel 130, while the second protective adhesive 120 is disposed in the first gap 151 and tightly abuts against the first protective adhesive 110 and the frame portion 141, preventing water and oxygen from entering the display device 100 from the first gap 151, thereby improving the sealing effect between the display panel 130 and the frame portion 141.

[0049] In some embodiments, the elastic modulus of the second protective adhesive 120 is less than that of the first protective adhesive 110. The elastic modulus of the second protective adhesive 120 can also be less than that of the middle frame 140. Thus, the elastic moduli of the first protective adhesive 110 and the middle frame 140 are relatively large. Since both the first protective adhesive 110 and the frame portion 141 are rigid structures, using the second protective adhesive 120 with its smaller elastic modulus as a flexible intermediary avoids direct hard contact between the first protective adhesive 110 and the middle frame 140. Compared to the first protective adhesive 110 and the middle frame 140, the second protective adhesive 120 possesses superior elastic deformation capability. When the display device 100 is subjected to impacts such as drops or compression, the second protective adhesive 120 can absorb the impact energy through its own compression and rebound deformation process, preventing the impact force from being directly transmitted to the edge of the display panel 130 through the first protective adhesive 110, thereby improving the drop resistance of the display panel 130.

[0050] For example, the second protective adhesive 120 can be arranged around the entire outer periphery of the first protective adhesive 110, so as to form a complete wrap-around buffer around the four edges of the display panel 130, which is beneficial to improving the buffering and sealing effect of the second protective adhesive 120.

[0051] For example, the second protective adhesive 120 can be formed by low-pressure injection molding. The second protective adhesive 120 can be formed on the first protective adhesive 110, and then the display module 101 and the middle frame 140 are assembled. For example, the first protective adhesive 110 and the second protective adhesive 120 are used by staged injection molding.

[0052] See Figure 6 and Figure 7In some embodiments, at least one of the first protective adhesive 110 and the frame portion 141 has a limiting groove 155 on the side facing the first gap 151, and the second protective adhesive 120 is located in the limiting groove 155. For example, the limiting groove 155 on the side of the first protective adhesive 110 facing the first gap 151 provides assembly space for the second protective adhesive 120, which can limit the displacement of the second protective adhesive 120 from the thickness direction of the display panel 130. When the display device 100 is subjected to vibration, impact or temperature deformation, the second protective adhesive 120 is less likely to shift vertically. For example, a limiting groove 155 is provided on the side of the frame portion 141 facing the first gap 151. The limiting groove 155 on the frame portion 141 provides assembly space for the second protective adhesive 120 and can limit the displacement of the second protective adhesive 120 from the thickness direction of the display panel 130. In addition, during the assembly process of the display module 101 and the middle frame 140, the limiting groove 155 of the frame portion 141 can serve as a positioning reference to guide the second protective adhesive 120 to quickly and accurately embed into the target position of the frame portion 141.

[0053] See Figure 6 In some embodiments, the dimension d3 of the first gap 151 along the direction from the frame portion 141 to the display panel 130 ranges from 0.09mm to 0.11mm. This avoids the first gap 151 being too small, providing a reasonable assembly gap for the assembly of the display module 101 and the middle frame 140, avoiding rigid compression or structural interference between the first protective adhesive 110 and the frame portion 141, and ensuring smooth assembly. In addition, it avoids the first gap 151 being too large, which would be detrimental to achieving a narrow bezel.

[0054] For example, the dimension d3 of the first gap 151 along the direction from the frame portion 141 to the display panel 130 can be 0.09mm, 0.095mm, 0.1mm, 0.105mm, 0.11mm or any value between 0.09mm and 0.11mm.

[0055] In some embodiments, the second protective adhesive 120 is configured in a compressed state, and the second protective adhesive 120 is interference-fitted with the frame portion 141. The compression amount of the second protective adhesive 120 along the direction from the frame portion 141 to the display panel 130 ranges from 0.045mm to 0.055mm. This avoids the second protective adhesive 120 having too little compression along the direction from the frame portion 141 to the display panel 130, allowing the second protective adhesive 120 to maintain a stable preload and tightly abut against the first protective adhesive 110 and the frame portion 141, improving the sealing performance to prevent water and oxygen intrusion. In addition, it avoids the second protective adhesive 120 having too much compression along the direction from the frame portion 141 to the display panel 130, which would reduce its deformation ability. The elastic deformation characteristics of the second protective adhesive 120 can be used to absorb the impact energy generated by drops and compression, preventing the frame portion 141 and the first protective adhesive 110 from making hard contact, mitigating the impact damage to the display panel 130, and further enhancing the drop resistance. Wherein, compression refers to the initial dimension d4 before the second protective adhesive is assembled into the first gap. Figure 9 ), and the first dimension d5 after the second protective adhesive is assembled with the first gap. Figure 10 The difference is the size of the second protective adhesive that is squeezed along the frame towards the display panel after assembly.

[0056] For example, the compression amount of the second protective adhesive 120 along the direction from the frame portion 141 to the display panel 130 can be 0.045mm, 0.047mm, 0.049mm, 0.05mm, 0.052mm, 0.055mm, or any value between 0.045mm and 0.055mm.

[0057] For example, the initial size d4 of the second protective adhesive 120 is in the range of 0.135mm-0.165mm. For instance, the initial size d4 can be 0.135mm, 0.145mm, 0.15mm, 0.155mm, 0.165mm or any value between 0.135mm and 0.165mm.

[0058] See Figure 7 In some embodiments, the first protective adhesive 110 includes an adhesive facing the frame portion 141 ( Figure 6On one side of the second surface 112, a second protective adhesive 120 is applied to the center of the second surface 112 along the thickness direction of the display panel 130. The dimension of the second surface 112 along the thickness direction of the display panel is H. Thus, by applying a low-elasticity second protective adhesive 120 to the center of the second surface 112 along the thickness direction of the display panel 130, when an impact force is applied to the second protective adhesive 120, the second protective adhesive 120 transmits the impact force to the first protective adhesive 110. This impact force can be evenly distributed on both sides of the first protective adhesive 110 along the thickness direction of the display panel 130, thereby avoiding stress concentration on the first protective adhesive 110.

[0059] See Figure 7 In some embodiments, there is only one second protective adhesive 120, which reduces the number of second protective adhesives 120 and helps to reduce the assembly difficulty between the display module 101 with the second protective adhesive 120 and the middle frame 140. The display module 101 with the second protective adhesive 120 and the middle frame 140 (… Figure 6 During assembly, the second protective adhesive 120 is subjected to the frame portion 141 ( Figure 6 The more the second protective adhesive 120 is applied, the more severe the interference becomes, which increases the difficulty of assembling the second protective adhesive 120 into place.

[0060] See Figure 10 In some embodiments, there are multiple second protective adhesives 120, and the multiple second protective adhesives 120 are arranged at intervals along the thickness direction of the display panel 130. In this way, by increasing the number of second protective adhesives 120, the sealing effect between the display panel 130 and the frame portion 141 can be further improved. In addition, multiple second protective adhesives 120 can better absorb impact energy and better improve the drop resistance of the display device 100.

[0061] See Figure 10In embodiments where there are multiple second protective adhesives 120, the dimension of the second protective adhesive 120 along the direction from the frame portion 141 to the display panel 130 is a first dimension d5. The first dimension d5 of the multiple second protective adhesives 120 increases sequentially in the direction away from the support portion 142. Thus, when the second protective adhesive 120 near the support portion 142 is assembled in the first gap 151, the interference stroke between it and the frame portion 141 is relatively long. By setting the first dimension d5 of the second protective adhesive 120 with a long interference stroke to be relatively small, the interference of the second protective adhesive 120 near the support portion 142 can be reduced. The interference force between the second protective adhesive 120 and the frame portion 141 is reduced, which reduces the squeezing resistance of the frame portion 141 on the second protective adhesive 120 near the support portion 142. This helps to reduce the difficulty of installing the second protective adhesive 120 with a longer interference stroke. In addition, when the second protective adhesive 120, which is far from the support portion 142, is assembled in the first gap 151, the interference stroke between it and the frame portion 141 is shorter. Setting the first dimension d5 of the second protective adhesive 120 with a shorter interference stroke to a larger value can improve the sealing effect of the second protective adhesive 120 on the first protective adhesive 110 and the frame portion 141.

[0062] In another embodiment where there are multiple second protective adhesives 120, the first dimension d5 of any two of the multiple second protective adhesives 120 can be the same.

[0063] In some embodiments, the cross-section of the second protective adhesive 120 along the thickness direction of the display panel 130 is circular. Figure 10 ( ), oval or other shapes.

[0064] See Figure 8 and Figure 9 In some embodiments, the cross section of the second protective adhesive 120 along the thickness direction of the display panel 130 is the first cross section, and the line on the side of the first cross section away from the first protective adhesive 110 is the first curve S. The first curve S is a Gaussian distribution curve (i.e., a normal distribution curve). The first curve S includes a first sub-arc S1 and second sub-arcs S2 located on both sides of the first sub-arc. The first sub-arc S1 protrudes in a direction away from the first protective adhesive 110, and the second sub-arc S2 protrudes in a direction closer to the first protective adhesive 110. When the second protective adhesive 120 at the first sub-arc S1 is impacted by an external force, the impact can be transmitted quickly along the second protective adhesive 120 at the second sub-arcs S2 on both sides, which is beneficial for a more uniform distribution of stress on the first protective adhesive 110.

[0065] See Figure 2 and Figure 3In some embodiments, a first fitting portion 161 is provided on the side of the first protective adhesive 110 facing the support portion 142, and a second fitting portion 162 is provided on the side of the support portion 142 facing the first protective adhesive 110. One of the first fitting portion 161 and the second fitting portion 162 is a protrusion 171, and the other is a groove 172. The protrusion 171 is located in the groove 172. In this way, through the cooperation of the first fitting portion 161 and the second fitting portion 162, the contact area and mechanical interlocking force between the first protective adhesive 110 and the support portion 142 are increased, the connection firmness is improved, and the water and oxygen intrusion path is extended, further enhancing the airtightness. This application forms a stronger barrier against water and oxygen through the first fitting portion 161 and the second fitting portion 162. Even if the size of the first protective adhesive 110 along the display panel 130 to the frame portion 141 is reduced, the barrier effect of the first protective adhesive 110 against water and oxygen intrusion can still be guaranteed. In addition, reducing the size of the first protective adhesive 110 along the display panel 130 to the frame portion 141 is beneficial to achieving a narrow bezel.

[0066] See Figure 3 In some embodiments, the protrusion 171 includes a first side surface 1711 and a second side surface 1712 disposed opposite to each other along the direction from the frame portion 141 to the display panel 130, and the distance between the first side surface 1711 and the second side surface 1712 along the direction from the frame portion 141 to the display panel 130 is a first distance d1; the groove 172 includes a first groove sidewall 1721 and a second groove sidewall 1722 disposed opposite to each other along the direction from the frame portion 141 to the display panel 130, and the distance between the first groove sidewall 1721 and the second groove sidewall 1722 along the direction from the frame portion 141 to the display panel 130 is a second distance d2; both the first distance d1 and the second distance d2 gradually increase along the direction from the bottom of the groove 172 to the opening of the groove. Thus, the first distance d1 and the second distance d2 gradually increase from the bottom of the groove 172 to the opening, so that the protrusion 171 and the groove 172 form a wedge-shaped mating structure. When the protrusion 171 and the groove 172 are assembled, the first groove sidewall 1721 and the second groove sidewall 1722 can be used for guidance, reducing the difficulty of aligning the protrusion 171 into the groove 172 and the insertion resistance, so as to achieve fast and accurate positioning.

[0067] For example, both the protrusion 171 and the groove 172 can be annular rings extending circumferentially along the display panel. The orthographic projection of the protrusion 171 and the groove 172 along the thickness direction of the display panel can be arranged around the outer periphery of the orthographic projection of the display panel along the thickness direction of the display panel.

[0068] See Figure 4 and Figure 5In some embodiments, the protrusion 171 includes a plurality of sub-protrusions 1713, which are spaced apart along the direction from the display panel 130 to the frame portion 141. A second gap 152 is provided between two adjacent sub-protrusions 1713. The display device 100 includes a fixing adhesive 180, which is connected between two adjacent sub-protrusions 1713. Thus, the spaced design of the multiple sub-protrusions 1713, combined with the fixing adhesive 180 filling the second gap 152, forces water and oxygen to pass through each sub-protrusion 1713 in sequence before intrusion, further extending the intrusion path and enhancing the airtightness of the display device 100. In addition, the multiple spaced sub-protrusions 1713 further increase the contact area and mechanical interlocking force between the first protective adhesive 110 and the support part 142. Furthermore, the fixing adhesive 180 can be applied between two adjacent sub-protrusions 1713 by dotting, so that the fixing adhesive 180 fills the second gap 152 between two adjacent sub-protrusions 1713. This eliminates the need for a protruding structure on the middle frame 140 to be inserted into the smaller second gap 152, making the assembly of 140 and the first protective adhesive 110 simpler.

[0069] For example, the sub-protrusion 1713 is annular, and multiple sub-protrusions 1713 are sequentially nested from the inside out. The orthographic projection of the sub-protrusion 1713 along the thickness direction of the display panel can be arranged around the outer periphery of the orthographic projection of the display panel along the thickness direction of the display panel.

[0070] See Figure 4 In some embodiments, the display device 100 includes a fixing adhesive 180, which is connected between the support portion 142 and the first protective adhesive 110, and between the end of the frame portion 141 near the support portion 142 and the first protective adhesive 110. In this way, the first protective adhesive 110 and the middle frame 140 are connected together by adhesive, making the assembly between the first protective adhesive 110 and the middle frame 140 easier. In addition, the fixing adhesive 180 is located between the first protective adhesive 110 and the support portion 142, and between the first protective adhesive 110 and part of the frame portion 141, so that the fixing adhesive 180 covers a wide range, which is beneficial to improving the connection stability between the first protective adhesive 110 and the middle frame 140, and also beneficial to extending the water and oxygen intrusion path. In addition, the fixing adhesive 180 located in the first gap 151 is located near the bottom of the first gap 151, which is beneficial to prevent the fixing adhesive 180 from overflowing out of the first gap 151 before curing and affecting the appearance of the display device 100.

[0071] For example, the adhesive 180 may be an annular ring extending circumferentially along the display panel.

[0072] join Figure 4In embodiments where a first fitting portion 161, a second fitting portion 162, and a fixing adhesive 180 are simultaneously provided, the placement area of ​​the fixing adhesive 180 can be increased by the first fitting portion 161 and the second fitting portion 162, which helps to extend the water and oxygen intrusion path and forms a stronger water and oxygen barrier path. In embodiments where the protrusion 171 includes multiple sub-protrusions 1713, the placement area of ​​the fixing adhesive 180 can be further increased, and the water and oxygen intrusion path can be further extended.

[0073] join Figure 4 In some embodiments, the display device 100 includes a polarizer 192 located on the light-emitting side of the display panel 130. The polarizer 192 can be used to reduce reflected light from the external environment and improve the contrast of the display panel 130.

[0074] join Figure 4 In some embodiments, the display device 100 includes a cover plate 191 located on the side of the polarizer 192 facing away from the display panel 130, and a first protective adhesive 110 located between a portion of the cover plate 191 and the support portion 142. The cover plate 191 is used to protect the display panel 130 to prevent the user from scratching the display panel 130 when using it.

[0075] join Figure 4 In some embodiments, the display device 100 includes an adhesive layer 193 located between a cover plate 191 and a polarizer 192, the adhesive layer 193 serving to bond the cover plate 191 and the polarizer 192 together. For example, the adhesive layer 193 may be formed of an optically transparent adhesive.

[0076] join Figure 5 In some embodiments, the area of ​​the display panel 130 and the cover plate 191 is larger than the area of ​​the polarizer 192 and the adhesive layer 193. The display panel 130 and the cover plate 191 protrude from the sidewalls of the polarizer 192 and the adhesive layer 193 along the direction from the display panel 130 to the frame portion 141. A third gap 153 located on the outer periphery of the polarizer 192 and the adhesive layer 193 is provided between the protruding portions of the display panel 130 and the cover plate 191. The first protective adhesive 110 can be located in the third gap 153, which helps to improve the connection stability between the first protective adhesive 110 and the display panel 130.

[0077] join Figure 4 In some embodiments, the display device 100 includes a composite film 194 (SCF) located on the backlight side of the display panel 130, and the composite film 194 can be attached to the backlight surface of the display panel 130.

[0078] For example, the composite film 194 may include a buffer layer that can buffer the impact force on the composite film 194 and the display panel 130, thereby improving the drop resistance of the display panel.

[0079] For example, the composite film 194 may include a metal layer, and the metal layer and a buffer layer are stacked together. The metal layer can be used to dissipate heat generated during the operation of the display panel 130, and can also improve the mechanical strength of the composite film 194, providing better support for the display panel 130 to enhance the overall structural strength of the display module 101. In addition, the metal layer can be used to connect with the grounding line in the display module 101 to release static electricity from the display panel 130 and reduce the adverse effects of static electricity on the display panel 130.

[0080] For example, the display device 100 can be a mobile phone or any electronic product with display function, including but not limited to the following categories: television, laptop, desktop monitor, tablet computer, digital camera, smart bracelet, smart glasses, vehicle display, industrial control equipment, medical display screen, touch interactive terminal, etc. This application embodiment does not make any special limitation in this regard.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely examples of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application.

Claims

1. A display device, characterized in that, include: The display panel includes a first substrate, a package, and a second substrate arranged along the thickness direction of the display panel. The package is located between the first substrate and the second substrate, and is located at the edge of the first substrate; The middle frame includes a border portion, which is located on the outer periphery of the display panel; A first protective adhesive is located between the display panel and the bezel portion, and is disposed around at least a portion of the outer periphery of the display panel; the first protective adhesive includes a first surface on the side opposite to the bezel portion, and the orthographic projection of the first surface along the thickness direction of the display panel is located on the outer periphery of the orthographic projection of the encapsulation along the thickness direction of the display panel.

2. The display device according to claim 1, characterized in that, The middle frame includes a support portion, part of which is located on one side of the display panel in the thickness direction, and the first protective adhesive is located on the side of the support portion facing the frame portion.

3. The display device according to claim 2, characterized in that, A portion of the first protective adhesive is located between the surface of the display panel facing the support and the support; Alternatively, the thickness of the first protective adhesive located between the surface of the display panel facing the support and the support is 0.

4. The display device according to claim 2 or 3, characterized in that, There is a first gap between the first protective adhesive and the frame portion; The display device includes at least one second protective adhesive, which is located in the first gap and surrounds at least a portion of the outer periphery of the first protective adhesive. The second protective adhesive abuts between the first protective adhesive and the frame portion, and the elastic modulus of the second protective adhesive is less than that of the first protective adhesive.

5. The display device according to claim 4, characterized in that, At least one of the first protective adhesive and the frame portion is provided with a limiting groove on one side facing the first gap, and the second protective adhesive is located in the limiting groove.

6. The display device according to claim 4, characterized in that, The first gap, along the direction from the frame portion to the display panel, ranges from 0.09mm to 0.11mm; and / or, The second protective adhesive is configured in a compressed state, and the compression amount of the second protective adhesive along the frame portion to the display panel ranges from 0.045mm to 0.055mm.

7. The display device according to claim 4, characterized in that, The first protective adhesive includes a second surface facing the side of the frame portion, and the second protective adhesive covers the center of the second surface along the thickness direction of the display panel.

8. The display device according to claim 4, characterized in that, The second protective adhesive is provided in multiple portions, and the multiple portions of the second protective adhesive are arranged at intervals along the thickness direction of the display panel; The dimension of the second protective adhesive along the edge portion to the display panel is the first dimension, and the first dimension of the plurality of second protective adhesives increases sequentially in the direction away from the support portion.

9. The display device according to claim 2 or 3, characterized in that, The first protective adhesive has a first fitting part on the side facing the support part, and the support part has a second fitting part on the side facing the first protective adhesive. One of the first fitting part and the second fitting part is a protrusion, and the other is a groove. The protrusion is located in the groove.

10. The display device according to claim 9, characterized in that, The protrusion includes a first side and a second side disposed opposite to each other along the border portion to the display panel, and the distance between the first side and the second side along the border portion to the display panel is a first distance; The groove includes a first groove sidewall and a second groove sidewall disposed opposite to each other along the direction from the frame portion to the display panel, and the distance between the first groove sidewall and the second groove sidewall along the direction from the frame portion to the display panel is a second distance; Both the first distance and the second distance gradually increase along the direction from the bottom of the groove to the opening of the groove.

11. The display device according to claim 9, characterized in that, The protrusion includes a plurality of sub-protrusions, which are spaced apart along the direction from the display panel to the frame portion; The display device includes a fixing adhesive that connects two adjacent sub-protrusions.

12. The display device according to claim 2 or 3, characterized in that, The display device includes a fixing adhesive; the fixing adhesive is connected between the support portion and the first protective adhesive, and is also connected between one end of the frame portion near the support portion and the first protective adhesive.

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