Display module and head-mounted display device

Abstract

The display module comprises a display screen, a lens barrel and a tape with a tear tab. The tape with the tear tab comprises a tape body and a tear tab. The tape body is adhesive and has at least one deformation hole. The tape body is located between the display screen and the lens barrel and is used to bond the display screen and the lens barrel. The tear tab is connected to the tape body. The extension direction of the tear tab is from the tear tab to the tape body. The extension direction of the tear tab does not overlap with the deformation hole after the tear tab is extended along the extension direction. The display module can improve the success rate of disassembling the lens barrel and the display screen.

Description

Technical Field

[0001] This disclosure relates to the field of electronic equipment technology, and more particularly to a display module and a head-mounted display device. Background Technology

[0002] In head-mounted display devices, such as virtual reality devices, optical lenses and displays need to be connected and fixed together. To facilitate installation and subsequent disassembly and maintenance, adhesive tape is usually used to fix the optical lenses and displays together. Summary of the Invention

[0003] This disclosure provides a display module and a head-mounted display device.

[0004] The following technical solution is adopted in this disclosure.

[0005] In some embodiments, this disclosure provides a display module, including: a display screen, a lens barrel, and adhesive tape with a tear handle;

[0006] Adhesive tape with a tear handle, comprising: the tape body and the tear handle.

[0007] The tape body is adhesive and has at least one deformable hole. The tape body is located between the display screen and the lens barrel for bonding the display screen and the lens barrel.

[0008] The tear handle is connected to the tape body; after the tear handle extends along its extension direction, the coverage area on the tape body does not overlap with the deformation hole; the extension direction of the tear handle is from the tear handle to the tape body.

[0009] In some embodiments, this disclosure provides a head-mounted display device including the display module described in any embodiment of this disclosure.

[0010] The display module provided in this embodiment is bonded between the lens barrel and the display screen by an adhesive tape with a tear handle. Deformation holes are provided in the adhesive tape with the tear handle to absorb deformation, thereby reducing the resistance of the tensile force applied perpendicular to the tear handle to these other areas. This makes it less likely for these other areas to break during the process of stretching the tear handle, thereby improving the success rate and yield when disassembling the lens barrel and the display screen. Attached Figure Description

[0011] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and elements are not necessarily drawn to scale.

[0012] Figures 1 to 5 This is a schematic diagram of an adhesive tape with a tear handle according to an embodiment of the present disclosure.

[0013] Figure 6 This is an exploded view of the display module according to an embodiment of this disclosure.

[0014] Figure 7 This is a schematic diagram of the lens tube according to an embodiment of the present disclosure.

[0015] Figure 8 This is a partial schematic diagram of a display module according to an embodiment of the present disclosure.

[0016] Reference numerals: 1. Adhesive tape body; 11. Deformation hole; 12. Corner area; 2. Tear handle; 21. Cutting line; 22. Interrupted line; 3. Display screen; 4. Lens barrel; 41. Clearance groove; 5. Adhesive tape with tear handle. Detailed Implementation

[0017] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0018] It should be understood that the various steps described in the method embodiments of this disclosure can be performed in sequence and / or in parallel. Furthermore, method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0019] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0020] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0021] It should be noted that the use of the word "a" in this disclosure is illustrative rather than restrictive, and those skilled in the art should understand that it should be understood as "one or more" unless otherwise expressly indicated in the context.

[0022] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0023] The solutions provided by the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0024] In display modules, for example, the display screen and the lens barrel (e.g., the lens barrel of an optical lens) are bonded together by a pull tab. Pulling the tab allows it to be separated from the display screen and lens barrel. However, the pull tab may have corner areas, where the extension direction changes. When stretched to a corner, the tab is easily obstructed, and when the tensile force reaches a certain level, it breaks, leading to disassembly failure. This is because at the corner, the pull tab is subjected to both tensile force in its extension direction and, due to bonding and the change in direction, tensile force perpendicular to the extension direction. These two perpendicular forces cause the pull tab to twist, increasing interference with the bonded components in the thickness direction. This results in greater resistance at the corner during disassembly, making it prone to breakage and reducing the success rate and yield of disassembly.

[0025] Some embodiments of this disclosure also propose a display module, such as Figures 6 to 8 As shown, it includes: a display screen 3, adhesive tape with a tear handle 5, and a lens barrel 4; as Figures 1 to 5 As shown, the adhesive tape 5 with a tear handle can be a pull strip, comprising: a tape body 1 and a tear handle 2, wherein the tear handle 2 is connected to the tape body 1; the tape body 1 and the tear handle 2 can be integrally connected; the tape body 1 is adhesive, specifically, both sides of the tape body 1 can be adhesive; the tape body 1 is located between the display screen 3 and the lens barrel 4, for bonding the display screen 3 and the lens barrel 4; the tape body 1 has at least one deformation hole 11; the tear handle 2 is connected to the tape body 1; after the tear handle 2 extends along its extension direction, the covering area on the tape body 1 does not overlap with the deformation hole 11; the extension direction of the tear handle 2 is from the tear handle 2 to the tape body 1.

[0026] In some embodiments, the tape body 1 has adhesive on both sides, and its two sides are respectively bonded to the display screen 3 and the lens barrel 4. The lens barrel 4 can be the barrel of an optical lens. When disassembly is required, the adhesive tape 5 with the tear handle 2 is pulled out from the display screen 3 and the lens barrel 4 by stretching the tear handle, thereby achieving rapid separation of the display screen 3 and the lens barrel 4. For some embodiments, please refer to... Figure 1 The extension direction of the tearing hand part 2 is Figure 1In the horizontal direction, assuming the tearing hand 2 is along its extending direction ( Figure 2 The tear handle 2 extends laterally (in the middle), and has an overlapping area with the tape body 1, that is, the covered area by the tear handle 2. Deformation holes 11 are present in other areas outside this covered area. The number of deformation holes 11 can be one or more. In some embodiments of this disclosure, after the adhesive tape with the tear handle is attached to other components, it can be removed by tearing it off using the tear handle 2. When tearing off the adhesive tape, the tensile force on the tape body 1 is basically outward along the extending direction of the tear handle 2. Therefore, the portion within the covered area will directly bear the tensile force, and will not bear any or very little force perpendicular to the tensile force, making it less prone to torsion when the tear handle is stretched. Other areas not located within the covered area will experience resistance from the tensile force applied by the tear handle 2 when it is stretched. This means they will bear forces in two perpendicular directions, resulting in significant resistance in these areas. When this resistance exceeds the tolerance limit, the tape body 1 is prone to twisting and breakage. Therefore, in some embodiments of this disclosure, deformation holes 11 penetrating the tape body 1 are provided in areas outside the covered area. These deformation holes 11 can absorb deformation and reduce the resistance from the tensile force applied by the tear handle 2 in these other areas, thus making them less likely to break during the stretching of the tear handle 2. When disassembling the display screen 3 and the lens barrel 4, the tape body 1 is pulled out from the display screen 4 and the lens barrel 4 by pulling the tear handle 2, separating the display screen 3 and the lens barrel 4. The presence of the deformation holes 11 in specific locations improves the success rate of disassembly between the display screen 3 and the lens barrel 4.

[0027] In some embodiments of this disclosure, the tape body 1 has at least one corner region 12, the corner region 12 being located in a region where the extension direction of the tape body 1 changes, and the deformation hole 11 being located in the corner region 12.

[0028] In some embodiments, such as Figure 1 As shown, there is a corner area 12 on the tape body 1, where you can see... Figure 1 The tape body 1 on the lower side of the corner area 12 in the upper left corner extends vertically, while the tape body 1 on the right side of the corner area 12 extends horizontally. Therefore, when the tear handle 2 is stretched, the corner area 12 will be subjected to two intersecting tensile forces, making it prone to twisting. That is, because the corner area 12 connects two parts of the tape body 1 with different extension directions, it will bear tensile forces in two different directions when the tear handle 2 is stretched, thus making it prone to twisting. In some embodiments, the corner area 12 may specifically be the intersection of two edges of the tape body 1 with different extension directions.

[0029] In some embodiments, such as Figure 1As shown, the tape body 1 may have a mounting hole in the middle. The tape body 1 is annular and may partially overlap with the coverage area. The corner area 12 may be the overlapping area of ​​the four corner areas of the concentric square of the mounting hole and the tape body 1. The side length of the concentric square is equal to or greater than the diameter of the mounting hole. The extension direction of the tear handle 2 may be parallel to the side of the concentric square, and the coverage area may pass through the center of the mounting hole.

[0030] In some embodiments of this disclosure, the number of the tearing handle 2 is at least two. In some embodiments, such as... Figure 1 As shown, at least two tearing handles 2 are connected to the tape body 1. This way, even if one tearing handle 2 breaks when it is stretched, the other tearing handles 2 can be used to continue stretching, thereby improving the success rate of removing the adhesive tape.

[0031] In some embodiments of this disclosure, at least two of the tearing handles 2 are respectively connected to the opposite edges of the tape body 1. In some embodiments, such as... Figure 1 As shown, the tearing handle 2 is connected to two opposite edges of the tape body 1, so that when one tearing handle 2 breaks, it has already disassembled part of the tape body 1, and the other tearing handle 2 can start disassembling from the part that has not yet been disassembled.

[0032] In some embodiments of this disclosure, at least two tearing handles 2 are respectively connected to two edges of the tape body 1 with different extending directions. In some embodiments, multiple tearing handles 2 may be connected to edges with intersecting extending directions, for example, one may be connected to... Figure 1 The other side can be connected to the upper or lower edge of the tape body 1 on the left side edge. This way, when stretched, a vertical tensile force can be applied, which can effectively solve the problem of high resistance in the corner area.

[0033] In some embodiments of this disclosure, at least one of the tearing handles 2 has at least one cutting line 21 or interruption line 22, thereby dividing one tearing handle 2 into at least two sub-tearing handles connected to the tape body 1.

[0034] In some embodiments, such as Figures 2 to 5 As shown, the tear handle 2 can have a cutting line, which can completely cut the tear handle 2 into two unconnected sub-tear handles. However, the interruption line 22 does not completely separate the sub-tear handles; the two sub-tear handles are partially connected, and the connecting line between them is the interruption line 22. The number of sub-tear handles can be increased by using either the cutting line 21 or the interruption line 22, thereby increasing the number of usable tear handles. Compared to the cutting line 21, the interruption line 22 can better prevent moisture or dust from entering the tape body 1.

[0035] In some embodiments of this disclosure, such as Figure 2 As shown, the cut line 21 or interrupted line 22 is W-shaped or S-shaped. This increases the path for moisture or dust to enter, preventing them from entering the interior of the tape body 1.

[0036] In some embodiments of this disclosure, the length of the tearing part 2 in its extending direction is not less than 2 mm, and in some embodiments, the width of the tearing part 2 perpendicular to its extending direction is not less than 1.5 mm, thereby ensuring the strength of the tearing part 2 and preventing it from breaking.

[0037] In some embodiments, the distance between the deformation hole 11 and the edge of the tape body 1 is not less than 0.8 mm, thus ensuring the strength of the tape body 1 around the deformation hole 11 and preventing breakage. In some embodiments, the deformation hole 11 is circular with a diameter of not less than 0.8 mm, thereby ensuring the amount of deformation to reduce sufficient resistance.

[0038] In some embodiments of this disclosure, such as Figures 6 to 8 As shown, the edge region of the lens barrel 4 opposite to at least one of the tearing handle parts 2 has a relief groove 41; wherein, the bottom surface of the relief groove 41 (the side of the relief groove facing the tearing handle part 2) and at least one of the tearing handle parts 2 are spaced apart from each other in the overlapping direction. In some embodiments, such as Figure 8 As shown, the bottom surface of the clearance groove 41 overlaps with the tear handle 2 in the direction of thickness (the direction of the adhesive tape 5 with the tear handle). Figure 8 There is a gap in the vertical direction of the lens barrel 4 to prevent the tearing handle 2 from sticking together and to make it easier for the user to pull the tearing handle 2.

[0039] In some embodiments, the projection of at least one of the tearing handles 2 and the tape body 1 onto the bottom surface of the clearance groove (the projection is...) Figure 8 The line pointed to by the left arrow of the middle D) is located on the side of the inner edge of the bottom surface of the clearance groove away from the inner side of the lens barrel 4. The inner edge is the edge of the bottom surface of the clearance groove near the inner side of the lens barrel 4 (the inner edge is...). Figure 8 The line pointed to by the right arrow of D in the middle.

[0040] In some embodiments, such as Figure 8 As shown, the connecting line between the tearing handle 2 and the tape body 1 is also the edge of the tape body 1 connected to the tearing handle 2. The inner edge of the bottom surface of the clearance groove is the edge of the bottom surface of the clearance groove near the inner side of the lens barrel. The distance between the two is D, where D is greater than or equal to 0 mm. The connecting line is closer to the outer side of the lens barrel than the inner edge, which makes it easier for the tape body 1 to be pulled when stretched by the tearing handle 2.

[0041] In some embodiments of this disclosure, the display screen is mainly located inside the mounting hole of the tape body 1, and the edge of the display screen is bonded to the lens barrel by an adhesive tape 5 with a tear handle.

[0042] This disclosure also proposes a head-mounted display device, including the display module described in any of the embodiments. The head-mounted display device may be a virtual reality display device, an augmented reality display device, or a mixed reality display device.

[0043] The following example illustrates the structure of a head-mounted display device, with display screen 3 representing the display screen and lens barrel 4 representing the optical lens barrel within the device. The composition of the display screen, the adhesive tape 5 with tear handle, and the lens barrel 4 is as follows: Figure 6 The adhesive tape 5 with tear handles is positioned between the display screen and the lens barrel 4, serving an adhesive function. The adhesive tape 5 with tear handles has four parts: the tape body 1, tear handles 2 (at least two), and deformation holes. The lens barrel 4 has an adhesive surface (the contact surface with the adhesive tape 5 with tear handles) and a clearance groove. To solve the problem of easy-to-break tear handles, the design employs multiple tear handles, such as... Figure 2 The tear handle 2 includes a main tear handle and at least one spare tear handle; the width of the tear handle is typically ≥1.5mm (too narrow and it's prone to breakage), and the length is ≥2mm. When the main tear handle breaks, the spare tear handle is used for disassembly; the lens barrel 4 is then bonded accordingly, with the main / spare tear handles positioned to avoid contact. The spare tear handle is usually designed between two corner areas, on the opposite side of the main tear handle. Since the spare tear handle is not at approximately 90° to the tape body 1, it tends to generate significant resistance. At the tear handle, a groove needs to be cut into the non-sealed area at the bottom of the lens barrel 4 as a clearance groove, such as... Figure 7 and Figure 8 That is, a gap of at least 0.05 mm must be maintained between the tear handle 2 and the lens barrel 4 in the thickness direction of the adhesive tape 5 with the tear handle. Simultaneously, the inner edge of the clearance groove must extend inward beyond the inner edge of the tear handle 2. Figure 8 As shown, D≥0mm. To reduce the resistance of disassembly at the corner area, at least one deformation hole is designed at the corner area to accommodate the deformation in the thickness direction of the adhesive tape 5 with tear handle (the deformation in the thickness direction is converted into the planar deformation of the adhesive tape 5 with tear handle through the deformation hole). The deformation hole is usually designed as a circle (or other hollow form), with a diameter ≥0.8mm. The distance from the deformation hole to the edge of the tape body 1 is ≥0.8mm to prevent breakage during disassembly.

[0044] A cutting line can be made on the tear handle 2 to break it down into more sub-tear handles. To ensure a tight seal at the cutting line location, the cutting line is usually designed in a "W" shape to increase the entry path for moisture or dust. Furthermore, to further improve the sealing performance of the tear handle, a partial cutting line can be made on tear handle 2, thus creating... Figure 5The dimensions of the interrupted or cut line shown are 0.5mm × 0.2mm (length * width), and the length of the non-cut section of the interrupted line is ≥0.5mm. During disassembly, the tear handle can be separated along the cut line to create multiple sub-tear handles, ensuring proper disassembly. The non-disconnected nature of the interrupted line ensures product sealing.

[0045] In some embodiments, the problem of disassembly being unable to continue after the tearing handle breaks is improved by using multiple tearing handles. The problem of high disassembly resistance in corner areas is improved by using a deformable hole design, thereby greatly improving the disassembly yield.

[0046] The above description is merely a preferred embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0047] Furthermore, while the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this disclosure. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0048] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

Claims

1. A display module, characterized in that, include: Display screen (3), lens barrel (4), and adhesive tape with tear handle (5); The adhesive tape (5) with tear handle includes: tape body (1) and tear handle (2). The tape body (1) has adhesive on both sides and has at least one deformation hole (11). The tape body (1) is located between the display screen (3) and the lens barrel (4) for bonding the display screen (3) and the lens barrel (4). The tearing handle (2) is connected to the tape body (1); after the tearing handle (2) extends along its extension direction, the covering area on the tape body (1) does not overlap with the deformation hole (11); the extension direction of the tearing handle (2) is from the tearing handle (2) to the tape body (1); The tape body (1) has at least one corner region (12), the corner region (12) is located in the region where the extension direction of the tape body (1) changes, and the deformation hole (11) is located in the corner region (12).

2. The display module according to claim 1, characterized in that, The number of the tearing hand parts (2) is at least two.

3. The display module according to claim 2, characterized in that, At least two of the tearing handles (2) are respectively connected to the opposite edges of the tape body (1); or, at least two of the tearing handles (2) are respectively connected to two edges of the tape body (1) with different extension directions.

4. The display module according to any one of claims 1-3, characterized in that, At least one of the tearing handles (2) has at least one cutting line (21) or interruption line (22) to divide one of the tearing handles (2) into at least two sub-tearing handles connected to the tape body (1).

5. The display module according to claim 4, characterized in that, The cut line (21) or interrupted line (22) is W-shaped or S-shaped.

6. The display module according to claim 1, characterized in that, It satisfies at least one of the following: The tearing part (2) has a length of not less than 2 mm in its extending direction; The tearing part (2) has a width of not less than 1.5 mm perpendicular to its extension direction; The distance between the deformation hole (11) and the edge of the tape body (1) is not less than 0.8 mm; The deformable hole (11) is circular and its diameter is not less than 0.8 mm.

7. The display module according to claim 1, characterized in that, The lens barrel (4) has a clearance groove (41) on the edge region opposite to at least one of the tearing parts (2). The bottom surface of the avoidance groove (41) is spaced apart from at least one of the tearing parts (2) in the overlapping direction.

8. The display module according to claim 1, characterized in that, The lens barrel (4) has a clearance groove (41) on the edge region opposite to at least one of the tearing parts (2). The projection of the connection line between at least one of the tearing parts (2) and the tape body (1) on the bottom surface of the avoidance groove is located on the side of the inner edge of the bottom surface of the avoidance groove away from the inner side of the lens barrel (4), and the inner edge is the edge of the bottom surface of the avoidance groove near the inner side of the lens barrel (4).

9. A head-mounted display device, characterized in that, The display module includes any one of claims 1-8.

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