Display module and display device

Abstract

The application provides a display module and a display device. The display module comprises: a plurality of display screens; a support plate having a plurality of mounting portions, the display screens and the mounting portions at least partially overlapping in the thickness direction of the display screens; an elastic adhesive between the back of the display screen and the corresponding mounting portion; a stop portion between the back of the display screen and the corresponding mounting portion, the thickness of the elastic adhesive being greater than or equal to the thickness of the stop portion in the thickness direction of the display screen. The above scheme can improve the flatness of the display surface of the display module, thereby improving the display effect.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display module and display device. Background Technology

[0002] In recent years, the demand for display modules in terms of size and shape has become increasingly diverse. To meet these diverse needs, multiple displays are usually spliced ​​together to obtain the required display module.

[0003] However, during the installation of the display module, there is an issue of inconsistent flatness of the display surface. Ensuring the flatness of the display surface is crucial for improving the display effect. Summary of the Invention

[0004] The technical problem solved by the embodiments of the present invention is that the flatness of the display surface of the current display module is inconsistent, which affects the display effect.

[0005] To address the aforementioned technical problems, embodiments of the present invention provide a display module, comprising: a plurality of display screens; a support carrier plate having a plurality of mounting portions, wherein the display screens and the mounting portions at least partially overlap along the thickness direction of the display screens; an elastic adhesive member located between the back of the display screens and the corresponding mounting portions; and a stop portion located between the back of the display screens and the corresponding mounting portions, wherein the thickness of the elastic adhesive member is greater than or equal to the thickness of the stop portion along the thickness direction of the display screens.

[0006] This invention also provides a display device, including any of the above-described display modules.

[0007] Compared with the prior art, the technical solution of the embodiments of the present invention has the following beneficial effects:

[0008] The display module includes multiple displays and a supporting carrier plate. Along the thickness direction of the displays, the displays and mounting parts at least partially overlap to achieve display mounting. An elastic adhesive and a stop are provided between the back of the displays and the corresponding mounting parts. Along the thickness direction of the displays, the thickness of the elastic adhesive is greater than or equal to the thickness of the stop. Thus, during the manufacturing process of the display module, when multiple displays are pressed together, the stop allows the elastic adhesive to be compressed to the same thickness as the stop along the thickness direction of the displays, thereby limiting the maximum compression of the elastic adhesive. Therefore, along the thickness direction of the displays, the height difference between adjacent displays can be reduced, resulting in better consistency in the overall thickness of the display module, improving the flatness of the display surface, enhancing the splicing quality of the display module, and ultimately improving the display effect. Attached Figure Description

[0009] Figure 1This is a cross-sectional view of a display module in an embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A schematic diagram of the local structure at point A in the middle;

[0011] Figure 3 This is a cross-sectional view of another display module in an embodiment of the present invention;

[0012] Figure 4 This is a cross-sectional view of another display module in the embodiments of the invention;

[0013] Figure 5 This is a schematic diagram showing the relative positions of an elastic adhesive member and a stop portion in an embodiment of the present invention;

[0014] Figure 6 This is a schematic diagram showing the relative positions of another elastic adhesive component and a stop portion in an embodiment of the present invention;

[0015] Figure 7 This is a schematic diagram showing the relative positions of another elastic adhesive component and a stop portion in an embodiment of the present invention;

[0016] Figure 8 This is a schematic diagram of the structure of a display device according to an embodiment of the present invention.

[0017] Figure label:

[0018] 100 - Display module; 10 - Display screen; 11 - Back of display screen; 12 - 3A film material; 13 - Transparent ink; 14 - Black matrix; 15 - Array substrate; 16 - First area; 17 - Second area; 18 - LED; 20 - Support carrier plate; 21 - Mounting part; 211 - Cutout; 30 - Elastic adhesive; 40 - Stop part; 41 - Protrusion; 50 - Heat dissipation plate; 53 - Back of heat dissipation plate; 60 - Second metal layer; 70 - Protective layer; 80 - Locking part. Detailed Implementation

[0019] As described in the background section, multiple displays are typically spliced ​​together to obtain the desired display module. During the installation of the display module, double-sided adhesive is usually used to fix the displays. Due to the flexibility of double-sided adhesive, the degree of adhesion between adjacent displays may differ during the pressing process, resulting in inconsistent flatness of the display surface of the display module.

[0020] To address the aforementioned issues, in this embodiment of the invention, an elastic adhesive and a stop portion are provided between the back of the display screen and the corresponding mounting portion. Along the thickness direction of the display screen, the thickness of the elastic adhesive is greater than or equal to the thickness of the stop portion. Thus, during the manufacturing process of the display module, when multiple display screens are pressed together, the stop portion allows the elastic adhesive to be compressed to the same thickness as the stop portion along the thickness direction of the display screen, thereby limiting the maximum compression of the elastic adhesive. Therefore, along the thickness direction of the display screen, the height difference between adjacent display screens can be reduced, resulting in better consistency in the overall thickness of the display module, improving the flatness of the display surface, enhancing the splicing quality of the display module, and ultimately improving the display effect.

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] To make the above-mentioned objectives, features and beneficial effects of the embodiments of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Figure 1 This is a cross-sectional view of a display module in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the local structure at point A in the middle; Figure 3 This is a cross-sectional view of another display module in an embodiment of the present invention. The following is in conjunction with... Figures 1 to 3 The specific structure of the display module is explained.

[0024] In a specific implementation, the display module 100 includes: a plurality of display screens 10, a support carrier plate 20, an elastic adhesive member 30, and a stop portion 40. The support carrier plate 20 has a plurality of mounting portions 21, and the display screens 10 and the mounting portions 21 at least partially overlap along the thickness direction x of the display screens 10. The elastic adhesive member 30 is located between the back surface 11 of the display screens 10 and the corresponding mounting portion 21. The stop portion 40 is located between the back surface 11 of the display screens 10 and the corresponding mounting portion 21, and along the thickness direction x of the display screens 10, the thickness of the elastic adhesive member 30 is greater than or equal to the thickness of the stop portion 40.

[0025] By adopting the above solution, since the thickness of the elastic adhesive 30 is greater than or equal to the thickness of the stop portion 40, during the manufacturing process of the display module 100, when multiple display screens 10 are pressed together, the stop portion 40 allows the elastic adhesive 30 to be compressed to the same thickness as the stop portion 40 along the thickness direction x of the display screen 10, thus limiting the maximum compression of the elastic adhesive 30. Therefore, along the thickness direction of the display screen 10, the height difference between adjacent display screens 10 can be reduced, resulting in better consistency in the overall thickness of the display module 100, improving the flatness of the display surface of the display module 100 and the splicing quality of the display module 100, thereby improving the display effect of the display module 100.

[0026] In a specific implementation, along the thickness direction x of the display screen 10, the display screen 10, the mounting portion 21, and the elastic adhesive 30 at least partially overlap. The elastic adhesive 30 can be used to mount the display screen 10 onto the corresponding mounting portion 21.

[0027] In practical implementation, the elastic adhesive 30 can be a double-sided adhesive, liquid adhesive, or other materials with a certain degree of flexibility. Taking double-sided adhesive as an example, one side of the double-sided adhesive is bonded to the display screen 10, and the other side is bonded to the mounting part 21.

[0028] In a specific implementation, along the thickness direction x of the display screen 10, the thickness of the elastic adhesive 30 under maximum compression is less than or equal to the thickness of the stop portion 40.

[0029] Along the thickness direction of the display screen 10, the thickness of the elastic adhesive 30 is N times the thickness of the stop portion 40, where 1 < N ≤ 1.5. Thus, during the manufacturing process of the display module 100, after the elastic adhesive 30 is placed between the display screen 10 and the mounting portion 21, when the display screen 10 and the support carrier plate 20 are pressed together, the extra thickness of the elastic adhesive 30 compared to the stop portion 40 provides sufficient compression space, ensuring the pressing effect and improving the reliability of the connection between the display screen 10 and the mounting portion 21. Furthermore, along the thickness direction of the display screen 10, when the elastic adhesive 30 is compressed to the same thickness as the stop portion 40, the stop portion 40 can prevent further compression of the elastic adhesive 30, ensuring the effectiveness of the stop portion 40.

[0030] In some non-limiting embodiments, 1 < N ≤ 1.2.

[0031] In some embodiments, the elastic adhesive 30 and the stop portion 40 do not overlap along the thickness direction x of the display screen 10. The elastic adhesive 30 and the stop portion 40 are arranged relatively independently to avoid mutual interference. During the pressing process of multiple display screens 10, by reasonably controlling the thickness of the stop portion 40 along the thickness direction x of the display screen 10, the compression thickness deviation of the elastic adhesive 30 corresponding to adjacent display screens 10 can be effectively reduced, further improving the flatness of the display surface of the display module 100 obtained after pressing.

[0032] In some embodiments, a heat dissipation plate 50 is provided on the back side 11 of the display screen. The heat dissipation plate 50 is provided on the back side 11 of the display screen. On the one hand, the heat dissipation plate 50 plays a role in heat conduction and heat dissipation to avoid local overheating during the light emission process of the display screen 10. On the other hand, the heat dissipation plate 50 can, to a certain extent, strengthen the strength of some components (such as thin film transistor array glass) in the display screen 10 and prevent cracking during splicing.

[0033] In a specific implementation, the heat spreader 50 may include a heat spreader adhesive layer and a first metal layer, with the heat spreader adhesive layer located between the back surface 11 of the display screen and the first metal layer.

[0034] In some embodiments, the heat-spreading adhesive layer can be copper paste or the like. While adhering the first metal layer to the back surface 11 of the display screen 10, the heat-spreading adhesive layer can also transfer heat emitted by some components inside the display screen 10 to the first metal layer, thereby improving the heat dissipation effect.

[0035] In some embodiments, the first metal layer 52 may be an aluminum plate, a stainless steel plate, or a copper plate, etc.

[0036] In some embodiments, the stop portion 40 includes a protrusion 41 disposed on one side surface of the heat spreader 50.

[0037] In some non-limiting embodiments, the protrusion 41 is disposed on a suitable surface such as the side or back of the heat spreader 50. The specific location of the protrusion 41 can be configured according to factors such as the position of the display screen 10 in the display module 100 and its assembly relationship with the support carrier plate 20.

[0038] In some non-limiting embodiments, the heat spreader 50 includes a first metal layer. A protrusion 41 is disposed on the first metal layer.

[0039] In specific implementation, the stop part 40 may include one or more protrusions 41. The shape of the protrusion 41 may be columnar, hemispherical, cubic, cube, conical, or other regular shapes. It is understood that the protrusion 41 may also be other irregular shapes.

[0040] In some embodiments, when there are multiple protrusions 41, the multiple protrusions 41 are relatively independent.

[0041] In some embodiments, the protrusion 41 can be formed on the heat spreader 50 using a stamping process. This method yields protrusion 41 with high production efficiency, is suitable for large-scale production, and has low cost. It should be noted that the accompanying drawings of the embodiments of the present invention illustrate protrusion 41 obtained by a stamping process as an example.

[0042] In other embodiments, protrusions 41 can also be formed directly on the heat spreader 50 using metal embossing, laser printing, or other methods.

[0043] In some non-limiting embodiments, the protrusion 41 protrudes from the back surface 53 of the heat spreader, the back surface 53 of the heat spreader being the surface facing the support plate 20.

[0044] In specific implementations, the elastic adhesive 30 and the stop portion 40 can be arranged in various ways. The following description uses the stop portion 40 as a protrusion 41 as an example to illustrate the arrangement of the elastic adhesive 30 and the stop portion 40.

[0045] In some embodiments, combined with Figure 5 and Figure 6 The elastic adhesive 30 is located in the first region 16 on the back side 53 of the heat spreader, and the protrusion 41 is located in the second region 17 on the back side 53 of the heat spreader. Along the thickness direction x of the display screen 10, the first region 16 and the second region 17 do not overlap. In this way, the relative independence of the placement areas of the elastic adhesive 30 and the protrusion 41 can be ensured, and mutual interference between the two can be avoided.

[0046] In some non-limiting embodiments, reference is made to Figure 1 and Figure 5 The first region 16 is located outside the second region 17. That is, the elastic adhesive 30 is located outside the stop portion 40 and surrounds the stop portion 40.

[0047] In some other non-limiting embodiments, reference is made to... Figure 6 The second region 17 is located outside the first region 16. That is, the stop portion 40 is located outside the elastic adhesive 30 and surrounds the elastic adhesive 30.

[0048] The first region 16 can be continuously disposed along the back surface 53 of the heat spreader. For example, the first region 16 is disposed around the edge of the back surface 53 of the heat spreader. That is, a ring of elastic adhesive 30 is disposed around the back surface 53 of the heat spreader. Alternatively, the first region 16 is disposed intermittently along the back surface 53 of the heat spreader.

[0049] The second region 17 can be continuously arranged along the back surface 53 of the heat spreader. For example, the second region 17 is arranged around the edge of the back surface 53 of the heat spreader. That is, a ring of protrusions 41 is arranged around the back surface 53 of the heat spreader. Alternatively, the second region 17 is intermittently arranged along the back surface 53 of the heat spreader.

[0050] The elastic adhesive 30 can cover the entire first region 16 or be disposed in a portion of the first region 16.

[0051] The stop part 40 can be distributed throughout the second region 17, or it can be distributed in a part of the second region 17.

[0052] In other implementations, refer to Figure 3 and Figure 7 Along a plane parallel to the heat spreader 50, the protrusions 41 and the elastic adhesive 30 are arranged alternately. In this way, while improving the flatness of the display surface of the display module 100, the space occupied by the protrusions 41 and the elastic adhesive 30 on the back 11 of the display screen can also be saved.

[0053] In some embodiments, taking the back of the heat spreader 50 as a rectangular or square shape, protrusions 41 may be provided at least at the four corners of the back of the heat spreader 50. Furthermore, protrusions 41 are provided at least on the long side and the short side of the back of the heat spreader 50. This ensures that during the pressing process, the protrusions 41 limit the maximum compression of the elastic adhesive 30 at multiple points, thereby ensuring overall flatness.

[0054] It should be noted that, Figures 5 to 7 The number of protrusions 41 and elastic adhesive members 30 shown in the diagram is merely an illustrative example for ease of understanding and does not limit the scope of protection of the present invention. In practice, other numbers can be configured as needed.

[0055] In a specific implementation, the display module 100 also includes a second metal layer (also referred to as a back metal layer) 60 disposed between the heat spreader 50 and the back surface 11 of the display screen, and a protective layer (also referred to as a back protective layer) 70 covering the second metal layer 60. The protective layer 70 covers the second metal layer 60, which can prevent the second metal layer 60 from being exposed.

[0056] In some embodiments, the stop portion 40 is provided on the mounting portion 21. The stop portion 40 provided on the mounting portion 21 has a similar structure to the stop portion 40 provided on the heat spreader 50. For details, please refer to the specific description of the stop portion 40 in the above embodiments, and it will not be repeated here.

[0057] In some embodiments, combined with Figure 1 , Figure 2 and Figure 4The display module 100 may further include a locking member 80, which is connected to the back surface 11 of the display screen and the corresponding mounting portion 21. Along the thickness direction x of the display screen 10, the locking member 80 can pull the back surface 11 of the display screen and the corresponding mounting portion 21. After the elastic adhesive 30 is pressed, the locking member 80 is connected to the back surface 11 of the display screen and the corresponding mounting portion 21. The locking member 80 can pull the back surface 11 of the display screen to prevent the elastic adhesive 30 from rebounding, thereby preventing the undulation of multiple display screens 10 caused by the rebound of the elastic adhesive 30, and further improving the flatness of the display surface of the display module 100.

[0058] In some embodiments, the locking element 80 may be adhesive tape. One end of the tape is adhered to the back 11 of the display screen. The other end of the tape is adhered to the corresponding mounting portion 21.

[0059] In other embodiments, the locking member 80 may be a spring hook. The back 11 of the display screen and the corresponding mounting part 21 are respectively provided with hooking parts, one end of the spring hook is hooked to the hooking part on the back 11 of the display screen, and the other end of the spring hook is hooked to the hooking part on the corresponding mounting part 21.

[0060] It is understandable that the locking component 80 can also be other components with locking functions, which will not be listed here.

[0061] In a specific implementation, the mounting part 21 has a cutout 211 that overlaps at least partially with the display screen 10 along the thickness direction x. The cutout 211 exposes at least a portion of the back surface 11 of the display screen to improve heat dissipation. Furthermore, the cutout 211 also provides some assembly space, facilitating the assembly of certain components (such as the locking element 80) and improving installation convenience.

[0062] In practical implementation, to ensure the display effect of the display module 100, the display screen 10 can be a borderless display screen to minimize the size of the non-display area between the display areas of adjacent display screens 10 and improve the display effect. It is understood that the display screen 10 can also be a display screen with a bezel smaller than a set value, that is, a display screen with a narrow bezel display effect.

[0063] In specific implementations, the structure of the display screen 10 varies depending on its type. In a typical application scenario, the display screen 10 may include: a 3A film 12, an encapsulation layer, a black matrix (BM) 14, a thin film transistor array glass (TFT) 15, and light-emitting diodes (LEDs) 18. The 3A film 12, transparent ink 13, black matrix 14, and TFT 15 are arranged sequentially from the display surface to the back surface of the display module 100. The encapsulation layer is located above the black matrix 14, and the black matrix 14 and LEDs 18 are arranged alternately. It should be noted that the color of the LEDs 18 can be configured according to actual needs; the color of the LEDs 18 can be blue, red, green, etc.

[0064] The "3A" in 3A membrane material 12 usually refers to a combination of three functions: anti-glare (AG), anti-reflection (AR), and anti-fingerprint (AF), to enhance the user's visual experience and ease of operation.

[0065] The encapsulation layer can reduce or even prevent the LED light-emitting diodes 18 from being affected by moisture, thus ensuring the reliability of the display screen 10. The black matrix 14 can prevent light leakage from the screen and improve the display effect.

[0066] The array substrate 15 is a basic driving circuit element of the display module 100 and is an important part of the display module 100.

[0067] This invention also provides a display device, combined with Figure 8 The display device includes any of the above-described display modules 100. For details regarding the specific structure of the display module 100, please refer to the description in the above embodiments; it will not be repeated here.

[0068] In practice, the specific type of display device is not limited and can include mobile phones, tablets, televisions, monitors, etc.

[0069] The various embodiments in this application are described in a progressive, parallel, or combined manner. Each embodiment focuses on its differences from other embodiments, and similar or identical parts between embodiments can be referred to interchangeably. The implementation methods provided in this application can be combined with each other without contradiction.

[0070] It should be noted that, in the description of this application, the accompanying drawings and embodiments are illustrative rather than restrictive. The same reference numerals throughout the embodiments identify the same structures. Additionally, for ease of understanding and description, the thicknesses of some layers, films, panels, regions, etc., may be exaggerated in the drawings. It is also understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, the element may be directly on the other element or there may be intermediate elements. Furthermore, "on" means positioning an element on or below another element, but does not inherently mean positioning it above another element according to the direction of gravity.

[0071] The terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally at the same time.

[0072] It should also be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or apparatus comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or apparatus that includes the aforementioned element.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be altered and modified in various ways and implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein, and the scope of protection of this invention should be determined by the scope defined in the claims.

Claims

1. A display module, characterized in that, include: Multiple displays; A support plate has multiple mounting portions, and the display screen and the mounting portions at least partially overlap along the thickness direction of the display screen; An elastic adhesive element is located between the back of the display screen and the corresponding mounting part; The stop portion is located between the back of the display screen and the corresponding mounting portion. Along the thickness direction of the display screen, the thickness of the elastic adhesive is greater than or equal to the thickness of the stop portion. Along the thickness direction of the display screen, the thickness of the elastic adhesive under maximum compression is less than or equal to the thickness of the stop portion.

2. The display module as described in claim 1, characterized in that, Along the thickness direction of the display screen, the thickness of the elastic adhesive is N times the thickness of the stop portion, where 1 < N ≤ 1.

5.

3. The display module as described in claim 1, characterized in that, Along the thickness direction of the display screen, the elastic adhesive does not overlap with the stop portion.

4. The display module as described in any one of claims 1 to 3, characterized in that, A heat spreader is provided on the back of the display screen, and the stop portion includes a protrusion disposed on one side surface of the heat spreader.

5. The display module as described in claim 4, characterized in that, The protrusion protrudes from the back of the heat spreader plate, and the back of the heat spreader plate faces the supporting carrier plate.

6. The display module as described in claim 4, characterized in that, The elastic adhesive is located in a first region on the back of the heat spreader, and the protrusion is located in a second region on the back of the heat spreader. Along the thickness direction of the display screen, the first region and the second region do not overlap.

7. The display module as described in claim 4, characterized in that, Along a plane parallel to the heat spreader, the protrusions and the elastic adhesive are arranged alternately at intervals.

8. The display module as described in claim 4, characterized in that, The heat spreader includes a heat spreader adhesive layer and a first metal layer. The heat spreader adhesive layer is located between the back of the display screen and the first metal layer, and the protrusion is disposed on the first metal layer.

9. The display module as described in claim 4, characterized in that, It also includes a second metal layer disposed between the heat spreader and the back of the display screen, and a protective layer covering the second metal layer.

10. The display module as described in claim 4, characterized in that, The number of protrusions is multiple, and the multiple protrusions are relatively independent.

11. The display module as described in any one of claims 1 to 3, characterized in that, The stop portion is provided on the mounting portion.

12. The display module as described in claim 1, characterized in that, Also includes: A locking element is connected to the back of the display screen and the corresponding mounting portion.

13. The display module as described in claim 1, characterized in that, The mounting portion has a cutout, and along the thickness direction of the display screen, the cutout at least partially overlaps with the display screen.

14. A display device, characterized in that, Includes the display module as described in any one of claims 1 to 13.

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