Film pasting jig for head-up display diffraction waveguide

Abstract

The utility model provides a film pasting jig for a head-up display diffraction waveguide, which comprises a supporting piece, a first through hole is arranged in the supporting piece, a plurality of supporting parts are arranged at the edge of the bottom surface of the supporting piece around the first through hole at intervals, and the plurality of supporting parts are arranged corresponding to a plurality of first positioning parts arranged on a layer to be pasted with a film. When the film pasting jig is used for conducting film pasting operation such as UV (ultraviolet) reduced adhesive film on the head-up display diffraction waveguide, self-coiling and adhesion of the UV reduced adhesive film cannot be caused in the process of tearing off the release film, so that the UV reduced adhesive film cannot be used, and in the process of conducting pasting operation on the UV reduced adhesive film on the head-up display diffraction waveguide, the UV reduced adhesive film cannot be used. The problems of blistering, wrinkling and the like of the UV viscosity reduction film pasted on the head-up display diffraction waveguide can be avoided, and a single operator can complete pasting operation of the UV viscosity reduction film of the head-up display diffraction waveguide through the film pasting jig provided by the utility model.

Description

Technical Field

[0001] This utility model belongs to the field of head-up display diffraction waveguide technology, specifically relating to a film-applying fixture for head-up display diffraction waveguides. Background Technology

[0002] Head-up display (HUD) technology projects driving information, navigation information, and other content onto a display screen or windshield. In this way, HUD can integrate driving and navigation information with real-world traffic conditions, creating an interactive feedback loop between the real world, the information world, and the user, thereby enhancing the user's perception of driving information.

[0003] In one implementation, a head-up display (HUD) can be based on augmented reality (AR) technology. AR technology allows users to simultaneously view the real-world environment as well as images or data superimposed on it. AR technologies mainly include coaxial side-view prism schemes, arrayed semi-permeable waveguide schemes, freeform surface schemes, and diffractive waveguide schemes, each offering different display performance. Among these, the diffractive waveguide scheme is widely used due to its advantages of small size and thinness.

[0004] The diffraction waveguide used for head-up displays (HUDs) includes a coupling grating region and a coupling output grating region. To increase the coupling efficiency of the coupling grating region, a coating operation needs to be performed on the coupling grating region of the HUD diffraction waveguide. Before performing the coating operation on the coupling grating region of the HUD diffraction waveguide, the other areas of the HUD diffraction waveguide, except for the coupling grating region, need to be covered with a UV anti-adhesion film. After the coating operation on the coupling grating region of the HUD diffraction waveguide is completed, the UV anti-adhesion film of the HUD diffraction waveguide is then peeled off.

[0005] When covering the areas of a head-up display (HUD) diffraction waveguide other than the coupling grating region with a UV anti-adhesion film, the film needs to be adhered to these areas. However, the following problems arise during the current process of adhering the UV anti-adhesion film to these areas:

[0006] 1. Before application, the UV anti-adhesion film adheres to the release film. During the separation process, the UV anti-adhesion film is prone to self-rolling and sticking due to the elasticity and static electricity of the film, which may render the UV anti-adhesion film unusable.

[0007] 2. During the application of UV anti-adhesion film to the head-up display diffractive waveguide, problems such as bubbling and wrinkling may occur.

[0008] 3. Due to the large waveguide area of ​​the head-up display diffractive waveguide, a single operator cannot complete the application of the UV anti-adhesion film to the head-up display diffractive waveguide. Utility Model Content

[0009] In order to overcome the shortcomings of the prior art, this utility model provides a film-applying fixture for head-up display diffractive waveguides.

[0010] This utility model is achieved through the following technical solution:

[0011] This utility model provides a film-applying fixture for a head-up display diffractive waveguide, including a support member;

[0012] The support member has a first through hole inside, and multiple support parts are arranged at intervals around the first through hole on the bottom edge of the support member. The multiple support parts are arranged corresponding to multiple first positioning parts of the film layer to be applied.

[0013] Furthermore, a second positioning part is provided on the bottom edge of the support member, and the second positioning part is correspondingly provided with a third positioning part provided on the film layer to be applied and a fourth positioning part provided on the head-up display diffraction waveguide support stage.

[0014] Furthermore, a first hand-held portion is provided on the side edge of the support member.

[0015] Furthermore, this also includes pressure-fit components;

[0016] The top surface of the pressing component is provided with a first groove, and the bottom surface of the pressing component is provided with a second groove;

[0017] The pressing component has a second through hole corresponding to the first through hole inside. The top end of the second through hole is on the same plane as the bottom of the first groove, and the bottom end of the second through hole is on the same plane as the bottom of the second groove.

[0018] The top edge of the pressing component is provided with a plurality of fifth positioning parts at intervals around the second through hole, and the plurality of fifth positioning parts are provided corresponding to a plurality of support parts.

[0019] Furthermore, a sixth positioning part is provided on the top edge of the pressing part, and the sixth positioning part is provided in correspondence with the fourth positioning part provided on the head-up display diffraction waveguide support platform.

[0020] Furthermore, the bottom surface of the first groove of the pressing component is provided with strip-shaped protrusions spaced around the second through hole.

[0021] Furthermore, a second hand-held portion is provided on the side edge of the pressing component.

[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0023] This invention provides a film-applying fixture for head-up display (HUD) diffractive waveguides, including a support member with a first through-hole inside. Multiple support portions are spaced around the first through-hole along the bottom edge of the support member, and these support portions correspond to multiple first positioning portions on the film layer to be applied. When applying a UV anti-adhesion film, such as a UV coating, to an HUD diffractive waveguide using this fixture, the UV anti-adhesion film will not self-roll or stick during the removal of the release liner, thus preventing it from becoming unusable. During the UV anti-adhesion film application process on the HUD diffractive waveguide, the applied film will not bubble or wrinkle. Furthermore, a single operator can complete the UV anti-adhesion film application operation on the HUD diffractive waveguide using this fixture. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the bottom structure of the rectangular support plate;

[0026] Figure 2 This is a schematic diagram of the top structure of the rectangular support plate;

[0027] Figure 3 This is a schematic diagram of the structure of the film layer to be applied;

[0028] Figure 4 A schematic diagram of the support stage for the head-up display diffraction waveguide.

[0029] Figure 5 This is a schematic diagram of the top surface structure of a rectangular pressing plate;

[0030] Figure 6 This is a schematic diagram of the bottom structure of a rectangular pressing plate;

[0031] Figure 7 A schematic diagram of a film-applying fixture consisting of a rectangular support plate and a rectangular pressing plate, which clamps a UV anti-adhesion film.

[0032] Figure 8 This is a schematic diagram of the structural assembly relationship of a film-applying fixture, consisting of a rectangular support plate and a rectangular pressing plate, which clamps the UV anti-adhesion film and performs alignment and bonding operations with a head-up display diffraction waveguide support stage during the film-applying process.

[0033] Among them, 1-rectangular support plate, 2-first through hole, 3-support column, 4-film layer to be applied, 4-1-release film, 4-2-UV anti-adhesion film, 5-first positioning hole, 6-second positioning hole, 7-1-third positioning hole A, 7-2-third positioning hole B, 8-head-up display diffraction waveguide support stage, 9-positioning column, 10-head-up display diffraction waveguide, 11-coupled grating area, 12-rectangular pressing plate, 13-first groove, 14-second groove, 15-second through hole, 16-strip protrusion, 17-fourth positioning hole, 18-fifth positioning hole, 19-first handheld part, 20-second handheld part. Detailed Implementation

[0034] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] In this document, the terms "first," "second," and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish different elements. The terms "one," "a," and other similar words are not intended to indicate the existence of only one of the stated things, but rather that the description refers only to one of the stated things, which may have one or more. The terms "comprising," "including," and other similar words are intended to indicate a logical relationship, not a spatial relationship. For example, "A includes B" means that logically B belongs to A, not that spatially B is located inside A. Furthermore, the meanings of the terms "comprising," "including," and other similar words should be considered open-ended, not closed. For example, "A includes B" means that B belongs to A, but B does not necessarily constitute all of A; A may also include other elements such as C, D, and E.

[0036] In this document, the terms "embodiment," "this embodiment," "preferred embodiment," and "one embodiment" do not imply that the description applies only to one specific embodiment, but rather that such description may also be applicable to one or more other embodiments. Those skilled in the art will understand that any description made herein relating to one embodiment can be substituted, combined, or otherwise incorporated with the descriptions in one or more other embodiments. Such substitutions, combinations, or other incorporations resulting in new embodiments are readily conceived by those skilled in the art and fall within the protection scope of this utility model.

[0037] In this description, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] This utility model provides a film-applying fixture for a head-up display diffractive waveguide, including a support member. The support member has a first through hole inside, which corresponds to the size of the head-up display diffractive waveguide to which the film is to be applied. The bottom edge of the support member has multiple support portions spaced around the first through hole, which correspond to multiple first positioning portions of the film layer to be applied.

[0039] For example, the film layer to be applied here consists of a release film and a UV anti-adhesion film, the UV anti-adhesion film being adhesively connected to the release film, and the first positioning portion of the film layer to be applied penetrating through the release film and the UV anti-adhesion film.

[0040] When applying a film to a head-up display (HUD) diffraction waveguide, firstly, with the bottom surface of the support member facing upwards, the film layer to be applied (in this example, consisting of a release film and a UV anti-adhesion film, with the UV anti-adhesion film adhered to the release film) is positioned on the support portion of the support member via the first positioning part. Then, the release film is peeled off, allowing the UV anti-adhesion film to be positioned on the support portion of the support member via the first positioning part. Finally, the support member with the UV anti-adhesion film facing downwards is aligned and bonded to the HUD diffraction waveguide. A pressure roller is used on the top surface of the support member through a first through-hole to press the UV anti-adhesion film, ensuring it adheres to the corresponding position on the HUD diffraction waveguide. Excess UV anti-adhesion film is then trimmed. During the removal of the release film, the UV anti-adhesion film is supported by multiple support portions on the support member. This prevents the UV anti-adhesion film from self-winding or sticking during separation from the release film, thus ensuring the UV anti-adhesion film remains usable. During the application of UV anti-adhesion film to the head-up display diffractive waveguide, the UV anti-adhesion film is supported by multiple support parts on the support member, preventing issues such as bubbling and wrinkling. Furthermore, a single operator can complete the application of the UV anti-adhesion film to the head-up display diffractive waveguide using the film application fixture of this invention.

[0041] like Figures 1-2 As shown, the example of the support component adopts a rectangular support plate 1. A first through hole 2 is opened in the rectangular support plate 1. Support columns 3 are arranged at intervals around the first through hole 2 on the bottom edge of the rectangular support plate 1. The first through hole in the figure is a rectangular through hole. Four support columns are arranged around the four sides of the rectangular through hole on the bottom edge of the rectangular support plate.

[0042] like Figure 3As shown, the film layer 4 to be applied, composed of release film 4-1 and UV anti-adhesion film 4-2, is provided with first positioning holes 5. The film layer to be applied has four first positioning holes, which pass through the four support columns of the rectangular support plate in the example described above, respectively, thus placing the film layer on the bottom surface of the rectangular support plate. It should be noted that the first positioning holes of the film layer to be applied penetrate both the release film and the UV anti-adhesion film.

[0043] When the support component example uses the rectangular support plate described above, and the film layer example consists of the release film and UV anti-adhesion film described above, the film application operation on the head-up display diffraction waveguide is as follows: First, with the bottom surface of the rectangular support plate facing upwards, the film layer to be applied is positioned on the four support pillars of the rectangular support plate through the four first positioning holes. Then, the release film is removed from the film layer to be applied, so that the UV anti-adhesion film is positioned on the four support pillars of the rectangular support plate through the four first positioning holes. Finally, the bottom surface of the rectangular support plate with the UV anti-adhesion film is placed downwards and aligned with the head-up display diffraction waveguide. A pressure roller is used on the top surface of the rectangular support plate to roll the UV anti-adhesion film through the first through hole, so that the UV anti-adhesion film is pasted on the corresponding position of the head-up display diffraction waveguide. Then, the excess UV anti-adhesion film is cut off.

[0044] When applying a film to areas of the head-up display (HUD) diffraction waveguide other than the coupling grating region, it is necessary to ensure that the support member on which the film layer to be applied (in an example, composed of a release film and a UV anti-adhesion film, with the UV anti-adhesion film adhered to the release film) is precisely aligned and bonded to the HUD diffraction waveguide after removing the release film. This ensures that the coupling grating region of the HUD diffraction waveguide is not covered by the film, thus facilitating subsequent coating operations on the coupling grating region of the HUD diffraction waveguide. Therefore, in a preferred embodiment, a second positioning part is provided on the bottom edge of the support member, and the second positioning part is correspondingly provided with a third positioning part on which the film layer to be applied is located and a fourth positioning part on the HUD diffraction waveguide support platform.

[0045] For example, taking the rectangular support plate as an example, and the film layer to be applied as being composed of the release film and UV anti-adhesion film, as shown below. Figures 1-4As shown, a second positioning hole 6 is provided on the bottom edge of the rectangular support plate 1, and a third positioning hole A7-1 and a third positioning hole B7-2 are provided on the film layer 4 to be applied (Note: the third positioning holes A and B on the film layer to be applied penetrate the release film and the UV anti-adhesion film). A positioning post 9 is provided on the head-up display diffraction waveguide support stage 8 on which the head-up display diffraction waveguide 10 is placed. The second positioning hole 6, the third positioning hole A7-1, and the positioning post 9 are correspondingly set. The third positioning hole B7-2 has the same shape and size as the coupling grating region 11 of the head-up display diffraction waveguide 10. The first set distance between the coupling grating region 11 of the head-up display diffraction waveguide 10 and the positioning post 9 on the head-up display diffraction waveguide support stage 8 is correspondingly set to the second set distance between the third positioning hole A7-1 and the third positioning hole B7-2 on the film layer 4 to be applied. Therefore, with the bottom surface of the rectangular support plate facing upwards, the film layer to be applied is placed on the support column of the rectangular support plate through the first positioning hole. Then, the release film of the film layer to be applied is removed, so that the UV anti-adhesion film is placed on the support column of the rectangular support plate through the first positioning hole. Finally, with the bottom surface of the rectangular support plate with the UV anti-adhesion film facing downwards, the rectangular support plate with the UV anti-adhesion film is aligned and bonded to the head-up display diffraction waveguide support stage through the second positioning hole on the rectangular support plate and the third positioning hole A on the UV anti-adhesion film through the positioning column of the head-up display diffraction waveguide support stage. At this time, the third positioning hole B of the UV anti-adhesion film coincides with the coupling grating area of ​​the head-up display diffraction waveguide on the head-up display diffraction waveguide support stage.

[0046] During the alignment and bonding process between the support member with the UV anti-adhesion film facing downwards and the head-up display diffraction waveguide, the UV anti-adhesion film is prone to falling off the bottom of the support member, and it is inconvenient to move the support member with the UV anti-adhesion film. To solve this problem, as a preferred embodiment, the film-applying fixture of this utility model may further include a pressing member.

[0047] The top surface of the pressing component has a first groove for contacting the bottom surface of the support component, and the bottom surface of the pressing component has a second groove for contacting the head-up display diffraction waveguide support platform. The pressing component has a second through-hole corresponding to the first through-hole inside, with the top and bottom ends of the second through-hole and the bottom of the second groove on the same plane. Multiple fifth positioning parts are spaced around the second through-hole on the top edge of the pressing component, and these fifth positioning parts correspond to multiple support parts. Through the design of the pressing component, the UV anti-adhesion film can be clamped between the support component and the pressing component, preventing the UV anti-adhesion film from falling downwards from the bottom surface of the support component and facilitating the movement of the support component where the UV anti-adhesion film is placed. Meanwhile, because the UV anti-adhesion film has an adhesive side after the release film is removed, during the alignment and bonding operation between the bottom surface of the support member with the UV anti-adhesion film facing down and the head-up display diffraction waveguide on the head-up display diffraction waveguide support platform, and the roller operation on the top surface of the support member using a pressure roller through the first through hole to press the UV anti-adhesion film so that the UV anti-adhesion film is pasted to the corresponding position of the head-up display diffraction waveguide, some of the UV anti-adhesion film may stick to the edge of the head-up display diffraction waveguide support platform. However, with the design of the above-mentioned pressing component, the adhesive side of the UV anti-adhesion film is in direct contact with the bottom surface of the first groove of the pressing component, and does not contact the head-up display diffraction waveguide support platform, so the situation of some UV anti-adhesion film sticking to the edge of the head-up display diffraction waveguide support platform will not occur. Meanwhile, in order to facilitate the removal of the UV anti-adhesion film adhering to the bottom surface of the first groove of the pressing component, strip-shaped protrusions are provided around the second through hole at intervals on the bottom surface of the first groove of the pressing component, reducing the contact area between the bottom surface of the first groove of the pressing component and the UV anti-adhesion film, and reducing the workload of removing the UV anti-adhesion film from the pressing component.

[0048] Preferably, a sixth positioning part is provided on the top edge of the pressing part, and the sixth positioning part is provided in correspondence with the fourth positioning part provided on the head-up display diffraction waveguide support stage.

[0049] like Figures 5-6As shown, the example of the pressing component uses a rectangular pressing plate 12. The top surface of the rectangular pressing plate 12 has a first groove 13, which contacts the bottom surface of the rectangular support plate in the example described above. The bottom surface of the rectangular pressing plate 12 has a second groove 14, which contacts the head-up display diffraction waveguide support platform on which the head-up display diffraction waveguide is placed. The interior of the rectangular pressing plate 12 has a second through hole 15 corresponding to the first through hole in the rectangular support plate. The top end of the second through hole 15 is on the same plane as the bottom of the first groove 13, and the bottom end of the second through hole 15 is on the same plane as the bottom of the second groove 14. The rectangular pressing plate 12 has strip-shaped protrusions 16 spaced around the second through hole 15 on the bottom surface of the first groove 13. The top edge of the rectangular pressing plate 12 has fourth positioning holes 17 spaced around the second through hole 15. The number and position of the fourth positioning holes correspond to the number and position of the support columns provided on the rectangular support plate 1 in the example described above. A fifth positioning hole 18 is provided on the top edge of the rectangular pressing plate 12, and the fifth positioning hole 18 is provided in correspondence with the positioning post 9 provided on the head-up display diffraction waveguide support platform 8.

[0050] When the film-applying fixture is composed of the rectangular support plate and the rectangular pressing plate as described above, the UV anti-adhesion film is sandwiched between the rectangular support plate and the rectangular pressing plate. The UV anti-adhesion film will not fall from the bottom surface of the support member, making it convenient to move the support member on which the UV anti-adhesion film is placed. Moreover, the adhesive side of the UV anti-adhesion film is in direct contact with the bottom surface of the first groove of the rectangular pressing plate, and does not contact the head-up display diffraction waveguide support stage. Therefore, there will be no situation where part of the UV anti-adhesion film is stuck to the edge of the head-up display diffraction waveguide support stage. Figure 7 This is a schematic diagram of the structure of a film-applying fixture consisting of a rectangular support plate 1 and a rectangular pressing plate 12, which holds the UV anti-adhesion film 4-2.

[0051] When the film-applying fixture consists of the rectangular support plate and rectangular pressing plate as described above, and the film layer to be applied consists of the release film and UV anti-adhesion film as described above, the film-applying operation on the head-up display diffraction waveguide is as follows: First, with the bottom surface of the rectangular support plate facing upwards, the film layer to be applied is positioned on the four support pillars of the rectangular support plate through the four first positioning holes. Then, the release film is removed from the film layer to be applied, so that the UV anti-adhesion film is positioned on the four support pillars of the rectangular support plate through the four first positioning holes. Then, the first groove on the top surface of the rectangular pressing plate is fastened to the bottom surface of the rectangular support plate on which the UV anti-adhesion film is applied, so that the rectangular support plate is completely positioned on the first groove of the rectangular pressing plate. Within a groove, the second through hole of the rectangular pressing plate communicates with the first through hole of the rectangular support plate, and the rectangular pressing plate is positioned on the four positioning posts of the rectangular support plate through four fourth positioning holes. Finally, the overall structure consisting of the rectangular pressing plate, the UV anti-adhesion film, and the rectangular support plate is flipped so that the bottom surface of the rectangular pressing plate in the second groove faces down. From top to bottom, the overall structure consisting of the rectangular pressing plate, the UV anti-adhesion film, and the rectangular support plate passes through the second positioning hole on the rectangular support plate, the third positioning hole A on the UV anti-adhesion film, and the fifth positioning hole on the rectangular pressing plate, and passes through the positioning posts of the head-up display diffraction waveguide support stage to perform alignment and bonding operations with the head-up display diffraction waveguide. Figure 8 The diagram shows the structural assembly relationship of the film-applying fixture, which consists of a rectangular support plate 1 and a rectangular pressing plate 12, in the process of aligning and bonding the UV anti-adhesion film 4-2 with the head-up display diffraction waveguide support stage 8.

[0052] To facilitate hand-held movement of the integrated structure comprising the pressing component, UV anti-adhesion film, and support component, preferably, a first hand-held portion is provided on the side edge of the support component, and a second hand-held portion is provided on the side edge of the pressing component. The first hand-held portion can be integrally formed and extended from the main body of the support component, or it can be formed by connecting other components to the support component. Similarly, the second hand-held portion can be integrally formed and extended from the main body of the pressing component, or it can be formed by connecting other components to the pressing component. For example, such as... Figures 1-2 As shown, when the support member is a rectangular support plate 1, first hand-held portions 19 are respectively provided on the two side edges of the rectangular support plate, such as... Figures 5-6 As shown, when the pressing component uses a rectangular pressing plate 12, a second hand grip 20 is provided on each of the two side edges of the rectangular pressing plate.

[0053] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art can still make modifications or equivalent substitutions to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model are within the protection scope of the claims of this utility model pending approval.

Claims

1. A film-applying fixture for a head-up display diffractive waveguide, characterized in that, Including support components; The support member has a first through hole inside, and multiple support parts are arranged at intervals around the first through hole on the bottom edge of the support member. The multiple support parts are arranged corresponding to multiple first positioning parts of the film layer to be applied.

2. The film-applying fixture for a head-up display diffractive waveguide according to claim 1, characterized in that, The bottom edge of the support is provided with a second positioning part, which is corresponding to the third positioning part of the film layer to be applied and the fourth positioning part of the head-up display diffraction waveguide support platform.

3. The film-applying fixture for a head-up display diffractive waveguide according to claim 1, characterized in that, The support member has a first hand-held part on its side edge.

4. The film-applying fixture for a head-up display diffractive waveguide according to claim 1, characterized in that, It also includes bonding pads; The top surface of the pressing component is provided with a first groove, and the bottom surface of the pressing component is provided with a second groove; The pressing component has a second through hole corresponding to the first through hole inside. The top end of the second through hole is on the same plane as the bottom of the first groove, and the bottom end of the second through hole is on the same plane as the bottom of the second groove. The top edge of the pressing component is provided with a plurality of fifth positioning parts at intervals around the second through hole, and the plurality of fifth positioning parts are provided corresponding to a plurality of support parts.

5. The film-applying fixture for a head-up display diffractive waveguide according to claim 4, characterized in that, The top edge of the pressing component is provided with a sixth positioning part, which corresponds to the fourth positioning part provided on the head-up display diffraction waveguide support platform.

6. The film-applying fixture for a head-up display diffractive waveguide according to claim 4, characterized in that, The bottom surface of the first groove of the pressing component is provided with strip-shaped protrusions spaced around the second through hole.

7. The film-applying fixture for a head-up display diffractive waveguide according to claim 4, characterized in that, The side edge of the pressing component is provided with a second hand grip.

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