Display module and head-mounted display device

Abstract

The invention provides a display module and a head-mounted display device. The display module comprises a display screen, a lens cone and an adhesive tape with a tearing handle. The adhesive tape with the tearing hand comprises an adhesive tape body and a tearing hand part, the adhesive tape body has viscosity, at least one deformation hole is formed in the adhesive tape body, and the adhesive tape body is located between a display screen and a lens cone and used for bonding the display screen and the lens cone; the tearing part is connected with the adhesive tape body; after the tearing part is extended along the extension direction, the coverage area on the adhesive tape body is not overlapped with the deformation hole; and the extending direction of the tearing part is from the tearing part to the adhesive tape body. The success rate of dismounting the lens cone and the display screen can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a display module and a head-mounted display device. Background Art

[0002] In a head-mounted display device, such as a virtual reality device, an optical lens and a display screen need to be connected and fixed together. To facilitate installation and subsequent disassembly and maintenance, an easy-to-pull adhesive is usually used to fix the optical lens and the display screen. Summary of the invention

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

[0004] The present disclosure adopts the following technical solutions.

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

[0006] The adhesive tape with a tearing handle comprises: an adhesive tape body and a tearing handle.

[0007] The tape body is sticky 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.

[0008] The tearing hand portion is connected to the tape body; after the tearing hand portion is extended along its extension direction, the covering area on the tape body does not overlap with the deformation hole; the extension direction of the tearing hand portion is the direction from the tearing hand portion to the tape body.

[0009] In some embodiments, the present disclosure provides a head-mounted display device, comprising the display module described in any one of the embodiments of the present disclosure.

[0010] In the display module provided by the embodiment of the present disclosure, the lens barrel and the display screen are bonded together by an adhesive tape with a tear handle, and a deformation hole is provided in the adhesive tape with a tear handle. The deformation hole can absorb deformation, thereby reducing the resistance of these other areas to the tensile force applied perpendicular to the tear handle, so that these other areas are not easily broken during the process of stretching the tear handle, thereby improving the success rate and yield rate when disassembling the lens barrel and the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0013] Figure 6 It is an exploded view of the display module of the embodiment of the present disclosure.

[0014] Figure 7 Schematic diagram of a lens barrel according to an embodiment of the present disclosure.

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

[0016] Figure numerals: 1. Adhesive tape body; 11. Deformation hole; 12. Corner area; 2. Tear-off portion; 21. Cutting line; 22. Discontinuity line; 3. Display screen; 4. Lens barrel; 41. Avoidance groove; 5. Adhesive tape with tear-off portion. DETAILED DESCRIPTION

[0017] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

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

[0019] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part 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". The relevant definitions of other terms will be given in the following description.

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

[0021] It should be noted that the modification of “one” mentioned in the present 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 clearly indicated in the context.

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

[0023] The solution provided by the embodiment of the present disclosure will be described in detail below with reference to the accompanying drawings.

[0024] In a display module, for example, a display screen and a lens barrel (for example, a lens barrel of an optical lens) are bonded by an easy-pull strip. After the tearing hand portion of the easy-pull strip is pulled, the easy-pull strip is pulled out from between the display screen and the lens barrel, thereby realizing the separation of the display screen and the lens barrel. However, there may be a corner area in the easy-pull strip, and the corner area is, for example, an area where the extension direction of the easy-pull strip changes. When the easy-pull strip is stretched to the corner area, it is easily blocked. When the tensile force reaches a certain degree, the easy-pull strip breaks, resulting in a failure in disassembly. This is because the easy-pull strip is subjected to the tensile force in the extension direction of the easy-pull strip at the corner, and also due to bonding and change of direction, it is subjected to the tensile force in the direction perpendicular to the tensile force of the easy-pull strip. The forces in the two mutually perpendicular directions make the easy-pull strip have a tendency to twist, and the interference amount between the components bonded in the thickness direction increases, resulting in a large resistance in the corner area during disassembly, and it is easy to break, resulting in a reduction in the success rate and yield rate of disassembly.

[0025] In some embodiments of the present disclosure, a display module is also provided, such as Figures 6 to 8 As shown, it includes: a display screen 3, an adhesive tape 5 with a tear handle, and a lens barrel 4; Figures 1 to 5 As shown, the adhesive tape 5 with a tearing handle may be an easy-pull strip, comprising: a tape body 1 and a tearing handle portion 2, wherein the tearing handle portion 2 is connected to the tape body 1; the tape body 1 and the tearing handle portion 2 may be integrally connected, the tape body 1 is sticky, specifically, both sides of the tape body 1 may be sticky, the tape body 1 is located between the display screen 3 and the lens barrel 4, and is used to bond the display screen 3 and the lens barrel 4, and the tape body 1 has at least one deformation hole 11; the tearing handle portion 2 is connected to the tape body 1, and after the tearing handle portion 2 is extended along its extension direction, the coverage area on the tape body 1 does not overlap with the deformation hole 11; the extension direction of the tearing handle portion 2 is the direction from the tearing handle portion 2 to the tape body 1.

[0026] In some embodiments, the two sides of the tape body 1 have adhesive, and the two sides are respectively bonded to the display screen 3 and the lens barrel 4. The lens barrel 4 can be the lens barrel of an optical lens. When disassembly is required, the adhesive tape 5 with the tearing hand is pulled out from the display screen 3 and the lens barrel 4 by stretching the tearing hand portion 2, thereby realizing the rapid separation of the display screen 3 and the lens barrel 4. In some embodiments, please refer to Figure 1 , the extending direction of the tearing hand portion 2 is Figure 1In the transverse direction, assuming that the tearing hand portion 2 is moved along its extension direction ( Figure 2 The tearing hand portion 2 is extended in the horizontal direction of the adhesive tape body 1, and the tearing hand portion 2 will have an overlapping area with the adhesive tape body 1, that is, the covering area covered by the tearing hand portion 2, and the deformation holes 11 are provided in other areas outside the covering area. The number of the deformation holes 11 can be one or more. In some embodiments of the present disclosure, after the adhesive tape with the tearing hand is attached to other components, the adhesive tape can be torn off by the tearing hand portion 2 for disassembly. When the adhesive tape is torn off, the tension borne by the adhesive tape body 1 is basically outward along the extension direction of the tearing hand portion 2. Therefore, the part located within the covering area will directly bear the tensile force, and will not bear or rarely bear any force other than the perpendicular and tensile force, and is not easy to twist when the tearing hand portion is stretched. As for other areas not located in the coverage area, when the tearing hand portion 2 is stretched, they will be subjected to resistance of the tensile force applied perpendicular to the tearing hand portion 2, that is, they will be subjected to forces in two perpendicular directions, so that these other areas will generate greater resistance. When the resistance is greater than the limit that can be tolerated, it is easy to cause the tape body 1 to twist and break. Therefore, in some embodiments of the present disclosure, deformation holes 11 penetrating the tape body 1 are provided in other areas outside the coverage area. The deformation holes 11 can absorb deformation and reduce the resistance of these other areas to the tensile force applied perpendicular to the tearing hand portion 2, so that these other areas are not easily broken during the stretching of the tearing hand portion 2. When disassembling the display screen 3 and the lens barrel 4, the tape body 1 is pulled out of the display screen 4 and the lens barrel 4 by pulling the tearing hand portion 2, so that the display screen 3 and the lens barrel 4 are separated. Because of the presence of the deformation holes 11 in special positions, the success rate of disassembly between the display screen 3 and the lens barrel 4 can be improved.

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

[0028] In some embodiments, Figure 1 As shown, the tape body 1 has a corner area 12, and it can be seen Figure 1 The tape body 1 on the lower side of the corner area 12 at the upper left corner extends in the vertical direction, while the tape body 1 on the right side of the corner area 12 extends in the horizontal direction. Therefore, when the tearing hand portion 2 is stretched, the corner area 12 will be subjected to tension in two intersecting directions, and it is easy to twist. That is, because the corner area 12 connects two parts of the tape body 1 extending in different directions, it will be subjected to tension in two different directions when the tearing hand portion 2 is stretched, and it is easy to twist. In some embodiments, the corner area 12 can specifically be the intersection of two edges of the tape body 1 extending in different directions.

[0029] In some embodiments, Figure 1As shown, the middle part of the tape body 1 may have a mounting hole, the tape body 1 is annular, and may partially overlap with the coverage area, the corner area 12 may be the overlapping area between the four corner areas of the concentric squares of the mounting hole and the tape body 1, the side length of the concentric squares is equal to or greater than the diameter of the mounting hole, the extension direction of the tearing hand portion 2 may be parallel to the side of the concentric squares, and the coverage area may pass through the center of the mounting hole.

[0030] In some embodiments of the present disclosure, the number of the tearing hand parts 2 is at least two. Figure 1 As shown, at least two tearing hands 2 are connected to the tape body 1, so that when the tearing hands 2 are stretched, even if one tearing hand 2 is broken, the other tearing hands 2 can be used to continue stretching, thereby improving the success rate of removing the adhesive tape.

[0031] In some embodiments of the present disclosure, at least two tearing hands 2 are respectively connected to the edges of the tape body 1 on opposite sides. Figure 1 As shown, the tearing hand portion 2 is respectively connected to two opposite edges of the tape body 1, so that when one tearing hand portion 2 is broken, it has already disassembled part of the tape body 1, and the other tearing hand portion 2 can be disassembled from the undisassembled part.

[0032] In some embodiments of the present disclosure, at least two tearing hands 2 are respectively connected to two edges of the tape body 1 in different extending directions. In some embodiments, multiple tearing hands 2 can be respectively connected to the edges intersecting in the extending directions, for example, one tearing hand 2 can be connected to the edge of the tape body 1. Figure 1 The left edge of the middle tape body 1, and the other can be connected to the upper or lower edge of the tape body 1, so that when stretching, a vertical stretching force can be applied, thereby effectively solving the problem of large resistance in the corner area.

[0033] In some embodiments of the present disclosure, at least one tearing hand portion 2 has at least one cutting line 21 or discontinuity line 22, so as to divide the tearing hand portion 2 into at least two sub-tearing hand portions connected to the tape body 1.

[0034] In some embodiments, Figures 2 to 5 As shown, the tearing hand portion 2 may have a cut-off line, and the cut-off line may completely cut the tearing hand portion 2 into two unconnected sub-tearing hand portions, while the discontinuity line 22 does not completely separate the sub-tearing hand portions, and the two sub-tearing hand portions are partially connected, and the connecting line between the two is the discontinuity line 22. The sub-tearing hand portions can be increased by the cut-off line 21 or the discontinuity line 22, thereby increasing the number of tearing hand portions that can be used, and the discontinuity line 22 can better prevent water vapor or dust from entering the interior of the tape body 1 than the cut-off line 21.

[0035] In some embodiments of the present disclosure, Figure 2 As shown, the cut-off line 21 or the discontinuous line 22 is W-shaped or S-shaped. In this way, the paths for water vapor or dust to enter can be increased by increasing the paths, thereby preventing them from entering the interior of the tape body 1.

[0036] In some embodiments of the present disclosure, the length of the tearing hand portion 2 in its extension direction is not less than 2 mm. In some embodiments, the width of the tearing hand portion 2 perpendicular to its extension direction is not less than 1.5 mm, thereby ensuring the strength of the tearing hand portion 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, so as to ensure the strength of the tape body 1 around the deformation hole 11 and avoid breakage. In some embodiments, the deformation hole 11 is circular, and its diameter is not less than 0.8 mm, so as to ensure the deformation amount, so as to ensure that sufficient resistance can be reduced.

[0038] In some embodiments of the present disclosure, Figures 6 to 8 As shown, the edge area of ​​the lens barrel 4 opposite to at least one of the tearing hand parts 2 has an escape groove 41; wherein the escape groove bottom surface of the escape groove 41 (the side of the escape groove facing the tearing hand part 2) and at least one of the tearing hand parts 2 are spaced apart from each other in the overlapping direction. In some embodiments, as Figure 8 As shown, it can be seen that the bottom surface of the avoidance groove 41 overlaps with the tearing handle 2 in the overlapping direction (the thickness direction of the adhesive tape 5 with the tearing handle, Figure 8 There is a gap in the vertical direction of the lens, so as to avoid the tearing hand part 2 and the lens barrel 4 from sticking together, and it is also convenient for the user to pull the tearing hand part 2.

[0039] In some embodiments, the projection of the connection line between at least one of the tearing hand portion 2 and the tape body 1 on the bottom surface of the avoidance groove (projection is Figure 8 The line pointed by the left arrow in D in the figure 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 close to the inner side of the lens barrel 4 (the inner edge is Figure 8 The line pointed by the right arrow in D).

[0040] In some embodiments, Figure 8 As shown, the connection line between the tearing hand portion 2 and the tape body 1 is the edge of the tape body 1 connected to the tearing hand portion 2, and the inner edge of the bottom surface of the avoidance groove is the edge of the inner side of the bottom surface of the avoidance groove close to the lens barrel. The spacing distance between the two is D, and D is greater than or equal to 0mm. The connection line is closer to the outer side of the lens barrel than the inner edge, so that the tape body 1 can be easier to be pulled when being stretched by the tearing hand portion 2.

[0041] In some embodiments of the present disclosure, the display screen is mainly located in 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 tab.

[0042] The present disclosure also provides a head-mounted display device, comprising the display module described in any one of the embodiments. The head-mounted display device can be a virtual reality display device, an augmented reality display device, or a mixed reality display device.

[0043] In the following, the display screen 3 is used as the display screen of the head mounted display device, and the lens barrel 4 is used as the lens barrel of the optical lens in the head mounted display device. Figure 6 The adhesive tape 5 with a tearing handle is located between the display screen and the lens barrel 4 to play a bonding role. The adhesive tape 5 with a tearing handle has four parts: an adhesive tape body 1, a tearing handle 2 (the number is at least two), and a deformation hole; the lens barrel 4 has a bonding surface (the contact surface with the adhesive tape 5 with a tearing handle) and an avoidance groove. In order to solve the problem that the tearing handle of the easy-to-pull adhesive is easy to break, the design adopts a solution of multiple tearing handles, such as Figure 2 . That is, the tearing hand portion 2 includes a main tearing hand portion, and at least one spare tearing hand portion; the width of the tearing hand portion is usually ≥1.5mm (too narrow and easy to break), and the length is ≥2mm. When the main tearing hand portion breaks, use the spare tearing hand portion for disassembly; the corresponding bonding barrel 4 is avoided according to the main / spare tearing hand portion, and the spare tearing hand portion is usually designed between two corner areas, on the opposite side of the main tearing hand portion. Since the spare tearing hand portion is not approximately 90° with the main body of the tape body 1, greater resistance is likely to be generated at the spare tearing hand portion. At the tearing hand portion, a groove needs to be dug in the non-sealed area at the bottom of the barrel 4 as an avoidance groove, such as Figure 7 and Figure 8 That is, there is a gap of at least 0.05 mm between the tearing hand portion 2 and the lens barrel 4 in the thickness direction of the adhesive tape 5 with the tearing hand. At the same time, the inner edge of the avoidance groove should extend inward beyond the inner edge of the tearing hand portion 2, that is, Figure 8 D ≥ 0mm. In order to reduce the resistance to disassembly at the corner area, at least one deformation hole is designed at the corner area to accommodate the deformation of the adhesive tape 5 with a tear handle in the thickness direction (the deformation in the thickness direction is converted into the deformation in the plane direction of the adhesive tape 5 with a tear handle through the deformation hole). The deformation hole is usually designed to be circular (or other hollow forms), with a diameter ≥ 0.8mmmm, and the distance from the deformation hole to the edge of the tape body 1 is ≥ 0.8mmmm to prevent breakage during disassembly.

[0044] A cutting line can be made on the tearing hand 2 to decompose more sub-tearing hands. In order to ensure the sealing of the cutting line, the cutting line is usually designed to be "W" shaped to increase the entry path of water vapor or dust. In order to further improve the sealing performance of the tearing hand, the tearing hand 2 can be designed to have a partial cutting line, that is, Figure 5The size of the discontinuity line, the cut-off line or the discontinuity line is 0.5mm×0.2mm (length*width), and the length of the non-cutting position of the discontinuity line is ≥0.5mm. When disassembling, the tearing hand can be separated along the cut-off line first, and then decomposed into multiple sub-tear hands to ensure the disassembly performance. The discontinuity line is not disconnected, which can ensure the sealing of the product.

[0045] In some embodiments, multiple tearing hands are used to improve the problem of being unable to continue disassembly after the tearing hands are broken during disassembly. The problem of large disassembly resistance in the corner area is improved by using a deformation hole design, thereby greatly improving the disassembly yield rate.

[0046] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other to form a technical solution.

[0047] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0048] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, 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. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A display module, characterized in that: include: A display screen (3), a lens barrel (4), and an adhesive tape with a tearing handle (5); The adhesive tape with a tear handle (5) comprises: an adhesive tape body (1) and a tear handle portion (2); The adhesive tape body (1) is sticky and has at least one deformation hole (11). The adhesive tape body (1) is located between the display screen (3) and the lens barrel (4) and is used to bond the display screen (3) and the lens barrel (4). The tearing hand portion (2) is connected to the tape body (1); after the tearing hand portion (2) is extended 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 hand portion (2) is the direction from the tearing hand portion (2) to the tape body (1).

2. The display module according to claim 1, characterized in that: The adhesive tape body (1) has at least one corner region (12), the corner region (12) is located in a region where the extension direction of the adhesive tape body (1) changes, and the deformation hole (11) is located in the corner region (12).

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

4. The display module according to claim 3, characterized in that: At least two of the tearing fingers (2) are respectively connected to the edges of the adhesive tape body (1) on two opposite sides; or at least two of the tearing fingers (2) are respectively connected to two edges of the adhesive tape body (1) extending in different directions.

5. The display module according to any one of claims 1 to 4, characterized in that: At least one tearing hand portion (2) has at least one cutting line (21) or discontinuity line (22), so as to divide the tearing hand portion (2) into at least two sub-tearing hand portions connected to the tape body (1).

6. The display module according to claim 5, characterized in that: The cut-off line (21) or the discontinuity line (22) is W-shaped or S-shaped.

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

8. The display module according to claim 1, characterized in that: The edge area of ​​the lens barrel (4) opposite to at least one of the tearing hand parts (2) has an avoidance groove (41); Wherein, the avoidance groove bottom surface of the avoidance groove (41) and at least one of the tearing hand portions (2) are spaced from each other in the overlapping direction.

9. The display module according to claim 1, characterized in that: The edge area of ​​the lens barrel (4) opposite to at least one of the tearing hand parts (2) has an avoidance groove (41); The projection of the connection line between at least one of the tearing hands (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 close to the inner side of the lens barrel (4).

10. A head mounted display device, characterized in that: A display module comprising any one of claims 1-9.

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