Display device

Abstract

The application discloses a display device, comprising a first display module. The first display module comprises a substrate, an encapsulation adhesive layer and a frame adhesive. The substrate has a display surface, a bottom surface and a side surface. The side surface is connected between the opposite display surface and the bottom surface. The encapsulation adhesive layer is arranged on the display surface. The frame adhesive comprises a connecting portion, a bottom portion and an extending portion. The connecting portion has two opposite ends and first and second opposite surfaces. The bottom portion and the extending portion are respectively located at the two opposite ends and extend away from the first and second surfaces respectively. The bottom portion contacts the bottom surface. The first surface contacts the side surface. The extending portion has an outer surface. The encapsulation adhesive layer contacts the connecting portion and the extending portion and is coplanar with the outer surface. The horizontal distance between the outer surface and the second surface is greater than 0.

Description

Technical Field

[0001] This invention relates to an electronic device, and more particularly to a display device. Background Technology

[0002] Common display devices include liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays, and plasma displays. These devices can be used in a wide variety of electronic products (e.g., televisions, desktop monitors, laptops, tablets, mobile phones, automotive displays, public displays, etc.). Furthermore, to accommodate the different sizes of display devices required for various electronic products, large-size display panels can be fabricated using existing materials, and then these panels can be cut to create display modules of various required sizes.

[0003] However, in the process of forming display modules of various required sizes, if the frame adhesive is too thick, the straightness of the frame adhesive at the cut will be poor; if the frame adhesive is too thin, the protective effect of the frame adhesive on the substrate will be reduced. Summary of the Invention

[0004] The present invention provides a display device in which the frame adhesive can simultaneously protect the substrate and ensure good straightness at the cut point (i.e., the outer surface).

[0005] The display device of the present invention includes a first display module. The first display module includes a substrate, an encapsulating adhesive layer, and a frame adhesive. The substrate has a display surface, a bottom surface, and a side surface. The side surface is connected between the opposing display surface and the bottom surface. The encapsulating adhesive layer is disposed on the display surface. The frame adhesive includes a connecting portion, a bottom portion, and an extension portion. The connecting portion has opposing ends and opposing first and second surfaces. The bottom and the extension portion are located at opposing ends and extend from the first and second surfaces in directions away from each other, respectively. The bottom contact the bottom surface. The first surface contactes the side surface. The extension portion has an outer surface. The encapsulating adhesive layer contacts the connecting portion and the extension portion and is coplanar with the outer surface. The horizontal distance between the outer surface and the second surface is greater than 0.

[0006] In one embodiment of the present invention, the display device further includes a second display module spliced ​​with the first display module. The second display module includes a substrate, an encapsulating adhesive layer, and a frame adhesive. The substrate has a display surface, a bottom surface, and a side surface. The side surface is connected between the opposing display surface and the bottom surface. The encapsulating adhesive layer is disposed on the display surface. The frame adhesive includes a connecting portion, a bottom portion, and an extension portion. The connecting portion has opposing ends and opposing first and second surfaces. The bottom and the extension portion are located at opposing ends and extend from the first and second surfaces in directions away from each other. The bottom contact the bottom surface. The first surface contactes the side surface. The extension portion has an outer surface. The encapsulating adhesive layer contacts the connecting portion and the extension portion and is coplanar with the outer surface. The horizontal distance between the outer surface and the second surface is greater than 0.

[0007] In one embodiment of the present invention, the outer surface of the first display module is in contact with the outer surface of the second display module.

[0008] In one embodiment of the present invention, the first display module further includes an optical film. The optical film is disposed on the side of the encapsulating adhesive layer opposite to the substrate, and the optical film is coplanar with the outer surface.

[0009] In one embodiment of the present invention, the outer surface of the optical film and the extension has continuous cuts.

[0010] In one embodiment of the present invention, the sum of the thickness of the extension, the thickness of the encapsulating adhesive layer and the thickness of the optical film is less than or equal to 450 micrometers.

[0011] In one embodiment of the present invention, the extension has opposing third and fourth surfaces. An outer surface connects between the third and fourth surfaces. The third surface contacts the encapsulating adhesive layer. The vertical distance between the fourth surface and the display surface is less than or equal to half the thickness of the substrate.

[0012] In one embodiment of the invention, the extension has opposing third and fourth surfaces. An outer surface connects between the third and fourth surfaces. The third surface contacts the encapsulating adhesive layer. The fourth surface has multiple grooves.

[0013] In one embodiment of the present invention, the vertical distance between the bottom and the bottom surface is greater than 0.

[0014] In one embodiment of the present invention, the connecting portion and the extension portion together form an L-shape.

[0015] Based on the above, in the display device of the present invention, the first display module, through the structural design of the frame adhesive, allows the substrate to be protected by the connection part and the bottom of the frame adhesive, and by controlling the thickness of the extension part, the cut part (i.e. the outer surface) of the extension part can have good straightness, thereby effectively improving the manufacturing yield and protection of the display device.

[0016] Furthermore, in the aforementioned display device, the first display module can also avoid direct collision between the substrate of the first display module and the substrate of other display modules (such as the substrate of the second display module) through the connection part of the frame adhesive and the bottom protective substrate in the subsequent splicing process. It can also smoothly splice through the outer surface with good straightness by contacting the outer surface of the extension part with the outer surface of other display modules (such as the outer surface of the second display module), thereby effectively improving the manufacturing yield and protection of the display device.

[0017] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a side view schematic diagram of the first display module of a display device according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 A side view of the first and second display modules spliced ​​together in the display device.

[0020] Symbol Explanation

[0021] 10: Display device

[0022] 100: First display module

[0023] 110, 210: Substrate

[0024] 111, 211: Display surface

[0025] 112, 212: Bottom surface

[0026] 113, 213: Side view

[0027] 120, 220: Encapsulating adhesive layer

[0028] 130, 230: Frame adhesive

[0029] 131, 231: Receiving Part

[0030] 132, 232: Bottom

[0031] 133, 233: Extension

[0032] 140, 240: Optical film

[0033] 150, 250: Protective film

[0034] 200: Second display module

[0035] E1, E2: End

[0036] S1: First Page

[0037] S2: Second side

[0038] S3: Third Side

[0039] S4: Fourth Page

[0040] SO1, SO2: outer surface

[0041] D1: Horizontal distance

[0042] D2, D3: Vertical distance

[0043] T1, T2, T3, T4: Thickness

[0044] XYZ: Rectangular coordinates Detailed Implementation

[0045] As used herein, “about,” “approximately,” “essentially,” or “substantially” includes the value and the average value within an acceptable range of deviations from a particular value as determined by one of ordinary skill in the art, taking into account the measurement in question and a particular number of errors associated with the measurement (i.e., limitations of the measurement system). For example, “about” may mean within one or more standard deviations of the value, or, for example, within ±30%, ±20%, ±15%, ±10%, ±5%. Furthermore, the use of “about,” “approximately,” “essentially,” or “substantially” herein may be chosen to select a more acceptable range of deviations or standard deviations depending on the nature of the measurement, the cutting nature, or other properties, and a single standard deviation may not be applicable to all properties.

[0046] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to a physical and / or electrical connection. Furthermore, an "electrical connection" may involve the presence of other elements between the two elements.

[0047] Furthermore, relative terms such as "below" or "bottom" and "above" or "top" may be used herein to describe the relationship between one element and another, as illustrated in the figures. It should be understood that relative terms are intended to include different orientations of the device beyond those shown in the figures. For example, if a device in one figure is flipped, an element described as being "below" to another element will be oriented "above" to that element. Thus, the exemplary term "below" can include both "below" and "above" orientations, depending on the specific orientation of the figure. Similarly, if a device in one figure is flipped, an element described as being "below" or "under" another element will be oriented "above" to that element. Thus, the exemplary terms "above" or "below" can include both "above" and "below" orientations.

[0048] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0049] Figure 1This is a side view schematic diagram of a first display module of a display device according to an embodiment of the present invention. It should be noted that rectangular coordinates XYZ are provided here for the purpose of subsequent description and reference of related components. Furthermore, the dimensions and thicknesses of the substrate 110, encapsulating adhesive layer 120, frame adhesive 130, optical film 140, and protective film 150 of the first display module 100 in the figure are only schematic representations.

[0050] Please refer to Figure 1 The display device 10 of this embodiment includes a first display module 100, and the first display module 100 includes a substrate 110, an encapsulating adhesive layer 120, and a frame adhesive 130. For example, the substrate 110 is a glass substrate, the material of the encapsulating adhesive layer 120 includes silicone, silicone resin, or epoxy resin, and the frame adhesive 130 can be a photocurable adhesive, a thermocurable adhesive, or a combination of photocurable adhesive and thermocurable adhesive, but the present invention is not limited thereto.

[0051] For details, please refer to Figure 1 In this embodiment, the substrate 110 has a display surface 111, a bottom surface 112, and a side surface 113. The side surface 113 connects the opposing display surface 111 and bottom surface 112, and the encapsulating adhesive layer 120 is disposed on the display surface 111 of the substrate 110 in the Z-axis direction. The frame adhesive 130 includes a connecting portion 131, a bottom portion 132, and an extension portion 133. The connecting portion 131 has two opposing ends E1 and E2 in the Z-axis direction and opposing first surfaces S1 and second surfaces S2, and the bottom portion 132 and the extension portion 133 are respectively located at the opposing ends E1 and E2 of the connecting portion 131, and extend from the first surface S1 and the second surface S2 of the connecting portion 131 in directions away from each other (i.e., along the -Y-axis direction and the +Y-axis direction, respectively).

[0052] It should be noted that, in this embodiment, multiple light-emitting elements (not shown) are disposed on the display surface 111 of the substrate 110, and the multiple light-emitting elements (not shown) are, for example, micro light-emitting diodes (μLEDs), organic light-emitting diodes or laser diodes, but the present invention is not limited thereto.

[0053] More specifically, please refer to Figure 1 In this embodiment, the first surface S1 of the connecting portion 131 contacts the side surface 113 of the substrate 110, the bottom surface 132 contacts the bottom surface 112 of the substrate 110, and the extension portion 133 has an outer surface SO1. The encapsulating adhesive layer 120 contacts the connecting portion 131 and the extension portion 133 in the Z-axis direction and is coplanar with the outer surface SO1 of the extension portion 133, and the horizontal distance D1 between the outer surface SO1 of the extension portion 133 and the second surface S2 of the connecting portion 131 in the Y-axis direction is greater than 0.

[0054] In other words, in this embodiment, the first display module 100 can use the frame adhesive 130 to fix the connecting part 131 to the substrate 110 and the encapsulating adhesive layer 120, and use the extension part 133 to strengthen the fixation with the encapsulating adhesive layer 120.

[0055] Here, it should be noted that you should refer to [the relevant source]. Figure 1 In this embodiment, the connecting portion 131 and the extension portion 133 are, for example, jointly formed into an L-shape, so that the frame adhesive 130 can simultaneously protect the side surface 113 of the substrate 110 through the connecting portion 131. By controlling the thickness of the extension portion 133, the cut end (i.e., the outer surface SO1) of the extension portion 133 can have good straightness, but this is not a limitation. In this embodiment, the connecting portion 131 and the bottom portion 132 are, for example, jointly formed into an inverted L-shape. The vertical distance D2 between the bottom portion 132 and the bottom surface 112 of the substrate 110 in the Z-axis direction is, for example, greater than 0, so that the frame adhesive 130 can protect the bottom surface 112 of the substrate 110 through the bottom portion 132, but this is not a limitation.

[0056] As described above, the frame adhesive 130 is structurally designed so that the substrate 110 is protected by the connecting portion 131 and the bottom 132 of the frame adhesive 130. By controlling the thickness of the extension portion 133, the cut part of the extension portion 133 (i.e., the outer surface SO1) can have good straightness, thereby effectively improving the manufacturing yield and protection of the first display module 100 in the display device 10.

[0057] The following provides a further description of the display device 10.

[0058] Please refer to Figure 1 In this embodiment, the extension 133 has opposing third surfaces S3 and fourth surfaces S4, and the outer surface SO1 is connected between the third surface S3 and the fourth surface S4. The third surface S3 contacts the encapsulating adhesive layer 120 in the Z-axis direction, and the fourth surface S4 has multiple grooves (not shown).

[0059] For details, please refer to Figure 1 In this embodiment, the vertical distance D3 between the fourth surface S4 and the display surface 111 (i.e., the thickness of the extension 133) is, for example, less than or equal to half the thickness T1 of the substrate 110, to ensure that the cut of the extension 133 (i.e., the outer surface SO1) has good straightness. For example, the vertical distance D3 between the fourth surface S4 and the display surface 111 is, for example, 300 micrometers, and the thickness T1 of the substrate 110 is, for example, 700 micrometers, but is not limited thereto.

[0060] More specifically, please refer to Figure 1In this embodiment, the first display module 100 further includes an optical film 140 and a protective film 150. The optical film 140 is disposed on one side of the encapsulating adhesive layer 120 in the Z-axis direction relative to the substrate 110, and is disposed between the encapsulating adhesive layer 120 and the protective film 150 in the Z-axis direction. The optical film 140 and the protective film 150 are coplanar with the outer surface SO1 of the extension 133, and the optical film 140, the protective film 150, and the outer surface SO1 of the extension 133 have continuous cuts.

[0061] In other words, in this embodiment, the optical film 140 and the protective film 150 are cut together at the cutting point of the extension 133 and are coplanar with the outer surface SO1 of the extension 133. The total thickness of the extension 133 (i.e., the vertical distance D3 between the fourth surface S4 and the display surface 111), the thickness T2 of the encapsulating adhesive layer 120, the thickness T3 of the optical film 140, and the thickness T4 of the protective film 150 is, for example, less than or equal to 450 micrometers, so that the cutting point of the extension 133 (i.e., the outer surface SO1) has good straightness, but is not limited thereto.

[0062] It should be noted that, in this embodiment, the extension 133 is formed, for example, by etching and cutting the frame adhesive 130 using a laser. The extension 133 can be irradiated with a laser once or multiple times to make the etched extension 133 have multiple grooves (not shown). Then, the thinner extension 133 after etching is cut by laser to ensure good straightness at the cut (i.e., the outer surface SO1). The multiple grooves (not shown) may appear to be wavy but are actually formed by groove corners (i.e., non-right angles or similar chamfer structures), but the present invention is not limited thereto.

[0063] It is worth mentioning that, in this embodiment, since the laser is irradiated from the bottom surface 112 of the substrate 110 toward the display surface 111 (i.e., along the -Z axis direction), multiple grooves (not shown) are formed on the fourth surface S4 of the extension 133 (i.e., the surface away from the display surface 111). Therefore, when the user views the displayed image from the display surface 111 toward the bottom surface 112 (i.e., along the +Z axis direction), the multiple grooves (not shown) located on the fourth surface S4 on the opposite side of the display surface 111 will not be seen. This ensures that the structure of the extension 133 does not affect the user's viewing experience and gives the display device 10 a good aesthetic appearance.

[0064] Furthermore, in this embodiment, the horizontal distance D1 between the outer surface SO1 of the extension 133 and the second surface S2 of the connecting portion 131 in the Y-axis direction is, for example, 25 micrometers, and is greater than the laser width for cutting the extension 133, so as to avoid the laser damaging the connecting portion 131 while cutting the extension 133, but the present invention is not limited thereto.

[0065] Figure 2 yes Figure 1 This is a side view of the first and second display modules spliced ​​together in the display device. It should be noted that the dimensions and thicknesses of the substrate 210, encapsulating adhesive layer 220, frame adhesive 230, optical film 240, and protective film 250 in the second display module 200 are only schematic.

[0066] Furthermore, the second display module 200 and the first display module 100 have the same and symmetrical structure. Therefore, regarding the structural design of the frame adhesive 230 and its resulting technical effects, please refer to the corresponding design of the frame adhesive 130 in the first display module 100 and its resulting technical effects, which will not be elaborated upon here. In addition, the display device 10 of the present invention is not limited to embodiments using spliced ​​display modules (i.e., including spliced ​​first display modules 100 and second display modules 200). In display devices of other embodiments, only [the following structures are described]. Figure 1 The single first display module 100 shown.

[0067] Please refer to Figure 2 In this embodiment, the display device 10 may further include a second display module 200 spliced ​​with the first display module 100, and the second display module 200 includes a substrate 210, an encapsulating adhesive layer 220, and a frame adhesive 230. For example, the substrate 210 may be a glass substrate, the material of the encapsulating adhesive layer 220 may include silicone, silicone resin, or epoxy resin, and the frame adhesive 230 may be a photocurable adhesive, a thermocurable adhesive, or a combination of photocurable adhesive and thermocurable adhesive, but the present invention is not limited thereto.

[0068] For details, please refer to Figure 2 In this embodiment, the substrate 210 has a display surface 211, a bottom surface 212, and a side surface 213. The side surface 213 connects the opposing display surface 211 and bottom surface 212, and the encapsulating adhesive layer 220 is disposed on the display surface 211 of the substrate 210 in the Z-axis direction. The frame adhesive 230 includes a connecting portion 231, a bottom portion 232, and an extension portion 233. The connecting portion 231 has two opposing ends E1 and E2 in the Z-axis direction and opposing first surfaces S1 and second surfaces S2, and the bottom portion 232 and the extension portion 233 are respectively located at the opposing ends E1 and E2 of the connecting portion 231, and extend from the first surface S1 and the second surface S2 of the connecting portion 231 in directions away from each other (i.e., along the +Y-axis direction and the -Y-axis direction, respectively).

[0069] It should be noted that, in this embodiment, multiple light-emitting elements (not shown) are disposed on the display surface 211 of the substrate 210, and the multiple light-emitting elements (not shown) are, for example, micro light-emitting diodes (μLEDs), organic light-emitting diodes or laser diodes, but the present invention is not limited thereto.

[0070] More specifically, please refer to Figure 2 In this embodiment, the first surface S1 of the connecting portion 231 contacts the side surface 213 of the substrate 210, the bottom surface 232 contacts the bottom surface 212 of the substrate 210, and the extension portion 233 has an outer surface SO2. The encapsulating adhesive layer 220 contacts the connecting portion 231 and the extension portion 233 in the Z-axis direction and is coplanar with the outer surface SO2 of the extension portion 233, and the horizontal distance D1 between the outer surface SO2 of the extension portion 233 and the second surface S2 of the connecting portion 231 in the Y-axis direction is greater than 0.

[0071] In other words, in this embodiment, the second display module 200 can use the frame adhesive 230 to fix the connecting part 231 to the substrate 210 and the encapsulating adhesive layer 220, and use the extension part 233 to strengthen the fixation with the encapsulating adhesive layer 220.

[0072] Here, it should be noted that you should refer to [the relevant source]. Figure 2 In this embodiment, the connecting portion 231 and the extension portion 233 are, for example, jointly formed into an L-shape, so that the frame adhesive 230 can simultaneously protect the side surface 213 of the substrate 210 through the connecting portion 231. By controlling the thickness of the extension portion 233, the cut end (i.e., the outer surface SO2) of the extension portion 233 can have good straightness, but this is not a limitation. In this embodiment, the connecting portion 231 and the bottom 232 are, for example, jointly formed into an inverted L-shape. The vertical distance D2 between the bottom 232 and the bottom surface 212 of the substrate 210 in the Z-axis direction is, for example, greater than 0, so that the frame adhesive 230 can protect the bottom surface 212 of the substrate 210 through the bottom 232, but this is not a limitation.

[0073] Furthermore, please refer to Figure 2 In this embodiment, the second display module 200 further includes an optical film 240 and a protective film 250. The optical film 240 is disposed on one side of the encapsulating adhesive layer 220 in the Z-axis direction relative to the substrate 210, and is disposed between the encapsulating adhesive layer 220 and the protective film 250 in the Z-axis direction. The optical film 240 and the protective film 250 are coplanar with the outer surface SO2 of the extension 233, and the optical film 240, the protective film 250, and the outer surface SO2 of the extension 233 have continuous cuts.

[0074] In other words, in this embodiment, the optical film 240 and the protective film 250 are cut together at the cutting point of the extension 233 and are coplanar with the outer surface SO2 of the extension 233. The total thickness of the extension 233 (i.e., the vertical distance D3 between the fourth surface S4 of the extension 233 and the display surface 211), the thickness T2 of the encapsulating adhesive layer 220, the thickness T3 of the optical film 240 and the thickness T4 of the protective film 250 is, for example, less than or equal to 450 micrometers, so that the cutting point of the extension 233 (i.e., the outer surface SO2) has good straightness, but is not limited thereto.

[0075] Thus, the first display module 100 and the second display module 200 can be connected by contacting each other through their outer surfaces SO1 and SO2, respectively, thereby achieving splicing of the first display module 100 and the second display module 200.

[0076] In this way, the first display module 100 and the second display module 200 in the display module 10 can be protected by the connecting portions 131 and 231 and the bottom portions 132 and 232 of the frame adhesives 130 and 230, respectively, through the structural design of the frame adhesives 130 and 230. By controlling the thickness of the extension portions 133 and 233, the cut points of the extension portions 133 and 233 (i.e., the outer surfaces SO1 and SO2) can have good straightness. Thus, when the first display module 100 and the second display module 200 are spliced, the substrate 110 of the first display module 100 and the substrate 210 of the second display module 200 can be effectively prevented from directly colliding with each other, and they can be smoothly spliced ​​through the outer surfaces SO1 and SO2 with good straightness, thereby effectively improving the manufacturing yield and protection of the display device 10.

[0077] In summary, in the display device of the present invention, the first display module, through the structural design of the frame adhesive, protects the substrate by the connection part and the bottom of the frame adhesive, and by controlling the thickness of the extension part, the cut part (i.e. the outer surface) of the extension part has good straightness, thereby effectively improving the manufacturing yield and protection of the display device.

[0078] Furthermore, in the aforementioned display device, the first display module can also avoid direct collision between the substrate of the first display module and the substrate of other display modules (such as the substrate of the second display module) through the connection part of the frame adhesive and the bottom protective substrate in the subsequent splicing process. It can also smoothly splice through the outer surface with good straightness by contacting the outer surface of the extension part with the outer surface of other display modules (such as the outer surface of the second display module), thereby effectively improving the manufacturing yield and protection of the display device.

[0079] Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A display device, comprising: The first display module includes: A substrate has a display surface, a bottom surface, and a side surface, wherein the side surface is connected between the opposite display surface and the bottom surface; An encapsulating adhesive layer is disposed on the display surface; and The frame adhesive includes a connecting portion, a bottom portion, and an extension portion, wherein the connecting portion has two opposing ends and two opposing first and second surfaces, the bottom portion and the extension portion are respectively located at the two opposing ends and extend from the first and second surfaces in a direction away from each other, the bottom portion contacts the bottom surface, the first surface contacts the side surface, the extension portion has an outer surface, the encapsulating adhesive layer contacts the connecting portion and the extension portion and is coplanar with the outer surface, and the horizontal distance between the outer surface and the second surface is greater than 0.

2. The display device as claimed in claim 1, further comprising a second display module connected to the first display module, the second display module comprising: A substrate has a display surface, a bottom surface, and a side surface, wherein the side surface is connected between the opposite display surface and the bottom surface; An encapsulating adhesive layer is disposed on the display surface; as well as The frame adhesive includes a connecting portion, a bottom portion, and an extension portion, wherein the connecting portion has two opposing ends and two opposing first and second surfaces, the bottom portion and the extension portion are respectively located at the two opposing ends and extend from the first and second surfaces in a direction away from each other, the bottom portion contacts the bottom surface, the first surface contacts the side surface, the extension portion has an outer surface, the encapsulating adhesive layer contacts the connecting portion and the extension portion and is coplanar with the outer surface, and the horizontal distance between the outer surface and the second surface is greater than 0.

3. The display device of claim 2, wherein the outer surface of the first display module is in contact with the outer surface of the second display module.

4. The display device of claim 1, wherein the first display module further includes an optical film disposed on one side of the encapsulating adhesive layer relative to the substrate, and the optical film is coplanar with the outer surface.

5. The display device of claim 4, wherein the optical film and the outer surface of the extension have continuous cuts.

6. The display device of claim 4, wherein the sum of the thickness of the extension, the thickness of the encapsulating adhesive layer, and the thickness of the optical film is less than or equal to 450 micrometers.

7. The display device of claim 1, wherein the extension has opposing third and fourth surfaces, the outer surface is connected between the third and fourth surfaces, the third surface contacts the encapsulating adhesive layer, and the vertical distance between the fourth surface and the display surface is less than or equal to half the thickness of the substrate.

8. The display device of claim 1, wherein the extension has opposing third and fourth surfaces, the outer surface is connected between the third and fourth surfaces, the third surface contacts the encapsulating adhesive layer, and the fourth surface has a plurality of grooves.

9. The display device of claim 1, wherein the vertical distance between the bottom and the bottom surface is greater than 0.

10. The display device of claim 1, wherein the connecting portion and the extension portion together form an L-shape.

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