Central control platform

Abstract

A display apparatus including a stretchable panel, a telescopic mechanism, a first adhesive layer and a second adhesive layer is provided. The stretchable panel has an operating surface. The telescopic mechanism is disposed on one side of the stretchable panel facing away from the operating surface, and has a carrying surface facing the stretchable panel. The telescopic mechanism is adapted to drive the stretchable panel to deform along a direction intersecting the operating surface. The first adhesive layer connects the stretchable panel and the carrying surface of the telescopic mechanism. The second adhesive connects the stretchable panel and the carrying surface of the telescopic mechanism. The second adhesive layer is disposed between an edge of the carrying surface and the first adhesive layer. The Young’s modulus of the second adhesive layer is greater than the Young’s modulus of the first adhesive layer.

Description

Technical Field

[0001] This invention relates to a display device, and more particularly to a stretchable display device. Prior Technology

[0002] A display device combining a stretchable panel and a deformation mechanism is available, with its operating surface possessing deformation capabilities. To allow the operating surface of the display device to have an uneven surface (e.g., a bumpy surface), the stretchable panel can be connected to multiple independently controllable deformation mechanisms via adhesive layers. However, after repeated deformations, the stretchable panel is prone to peeling off at the edge of its connection with the deformation mechanism, affecting the deformation effect of the display device. Summary of the Invention

[0003] The present invention provides a display device in which the connection between the telescopic mechanism and the stretchable panel is more stable.

[0004] The display device of the present invention includes a stretchable panel, a telescopic mechanism, a first adhesive layer, and a second adhesive layer. The stretchable panel has an operating surface. The telescopic mechanism is disposed on the side of the stretchable panel opposite to the operating surface and has a receiving surface facing the stretchable panel. The telescopic mechanism is adapted to deform the stretchable panel along a direction intersecting the operating surface. The first adhesive layer connects the stretchable panel and the receiving surface of the telescopic mechanism. The second adhesive layer connects the stretchable panel and the receiving surface of the telescopic mechanism. The second adhesive layer is disposed between the edge of the receiving surface and the first adhesive layer, and the Young's modulus of the second adhesive layer is greater than that of the first adhesive layer.

[0005] In one embodiment of the present invention, the ratio of the Young's modulus of the second adhesive layer to the Young's modulus of the first adhesive layer in the above-described display device is greater than or equal to 20 and less than or equal to 700.

[0006] In one embodiment of the present invention, the receiving surface of the telescopic mechanism of the above-described display device has a first width along any direction parallel to the receiving surface. The first adhesive layer has a second width along any direction, and the ratio of the second width to the first width is less than or equal to 0.3.

[0007] In one embodiment of the present invention, the second adhesive layer of the above-mentioned display device surrounds the first adhesive layer and completely covers the portion of the receiving surface not covered by the first adhesive layer.

[0008] In one embodiment of the present invention, the display device further includes another telescopic mechanism and an auxiliary plate. The other telescopic mechanism is disposed on the side of the stretchable panel facing away from the operating surface and is spaced apart from the telescopic mechanism. The auxiliary plate is attached to the back side of the stretchable panel facing away from the operating surface and is located between the telescopic mechanism and the other telescopic mechanism. A first distance between the edge of the receiving surface of each of the telescopic mechanism and the auxiliary plate along any direction parallel to the receiving surface is greater than or equal to 1 mm and less than or equal to 10 mm.

[0009] In one embodiment of the present invention, the Young's modulus of the auxiliary plate of the above-mentioned display device is greater than 1 GPa.

[0010] In one embodiment of the present invention, the display device further includes a support structure disposed on the side of the stretchable panel opposite to the operating surface, and having two openings overlapping the stretchable panel and a support portion defining the two openings. A telescopic mechanism and another telescopic mechanism are respectively connected to the stretchable panel via the two openings, and an auxiliary plate is disposed overlapping the support portion of the support structure.

[0011] In one embodiment of the present invention, the support portion of the display device described above has a sidewall that defines either of the two openings, and an auxiliary plate protrudes from the sidewall of the support portion.

[0012] In one embodiment of the present invention, the auxiliary plate of the above-mentioned display device has a plate edge that overlaps with either of the two openings, and the second distance between the plate edge of the auxiliary plate and the side wall of the support portion in any direction is greater than or equal to 0.5 mm and less than or equal to 5 mm.

[0013] In one embodiment of the present invention, the width of the support portion of the above-described display device along any direction is greater than or equal to 0.5 mm and less than or equal to 10 mm.

[0014] Based on the above, in a display device according to an embodiment of the present invention, a first adhesive layer and a second adhesive layer are provided on the receiving surface of the telescopic mechanism, and a stretchable panel is connected via these two adhesive layers. Since the second adhesive layer is located between the edge of the receiving surface and the first adhesive layer, and the Young's modulus of the second adhesive layer is greater than that of the first adhesive layer, the phenomenon of the stretchable panel peeling off from the telescopic mechanism after multiple deformations can be effectively suppressed, which helps to improve the stability of the display device during deformation operation. Simple Explanation of the Diagram

[0015] Figure 1 is a schematic diagram of a display device according to a first embodiment of the present invention. Figure 2 is a bottom view of the display device in Figure 1. Figure 3 is a cross-sectional schematic diagram of the display device in Figure 1. Figure 4A is a cross-sectional view of the display device in Figure 1 when it is partially recessed. Figure 4B is a cross-sectional view of the display device in Figure 1 when it is partially protruding. Figure 5 is a cross-sectional schematic diagram of a display device according to a second embodiment of the present invention. Figure 6 is a cross-sectional schematic diagram of a display device according to a third embodiment of the present invention. Implementation

[0016] 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 symbols are used in the drawings and description to denote the same or similar parts.

[0017] 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 an intermediate element may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate element is present. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may refer to the presence of other elements between two elements.

[0018] As used herein, “about,” “approximately,” 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 under discussion 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 within ±30%, ±20%, ±10%, ±5%. Furthermore, the use of “about,” “approximately,” or “substantially” herein may be chosen based on the optical, etched, or other properties to select a more acceptable range of deviations or standard deviations, and may not require a single standard deviation to apply to all properties.

[0019] Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology and this invention, and will not be interpreted as having idealized or overly formal meanings unless expressly defined herein.

[0020] Figure 1 is a schematic diagram of a display device according to a first embodiment of the present invention. Figure 2 is a bottom view of the display device of Figure 1. Figure 3 is a cross-sectional view of the display device of Figure 1. Figure 4A is a cross-sectional view of the display device of Figure 1 when it is partially recessed. Figure 4B is a cross-sectional view of the display device of Figure 1 when it is partially convex. Figure 3 corresponds to section line A-A' in Figures 1 and 2. For clarity, Figure 2 only shows the stretchable panel 100, the first adhesive layer 151, and the second adhesive layer 152 in Figure 3.

[0021] Please refer to Figures 1, 2, and 3. It should be noted that the display device 10 of this embodiment can be applied in the field of vehicle displays, such as the display / operation interface of a central control platform 50, but is not limited thereto. In other embodiments, the display device 10 can also be applied to other devices requiring a human-machine interface.

[0022] In detail, the display device 10 includes a stretchable panel 100 and a plurality of telescopic mechanisms 200. The stretchable panel 100 has an operating surface 100s, and the telescopic mechanisms 200 are disposed on the side of the stretchable panel 100 opposite to the operating surface 100s. For example, in this embodiment, the stretchable panel 100 may include a plurality of island-shaped structures (not shown) having display or touch functions, and bridging structures (not shown) connecting these island-shaped structures. The spacing between these island-shaped structures changes as the stretchable panel 100 operates under different deformation states. The stretchable panel 100 may be a display panel, a touch panel, or a combination thereof.

[0023] For example, in this embodiment, multiple telescopic mechanisms 200 may be arranged at intervals along directions X and Y, wherein directions X and Y intersect each other and are perpendicular to direction Z. More specifically, these telescopic mechanisms 200 are arranged in a honeycomb pattern along the normal direction (e.g., direction Z) of the operating surface 100s of the stretchable panel 100. However, the invention is not limited thereto. In other embodiments, the arrangement of these telescopic mechanisms 200 may be adjusted according to the actual application of the display device.

[0024] In this embodiment, the telescopic mechanism 200 is adapted to deform the stretchable panel 100 along a direction intersecting the operating surface 100s (e.g., direction Z). More specifically, the telescopic mechanism 200 is used to cause a portion of the stretchable panel 100 to be recessed toward the side opposite to the operating surface 100s (as shown in FIG. 4A), or to cause a portion of the stretchable panel 100 to be protruding toward the side of the operating surface 100s (as shown in FIG. 4B). The aforementioned portion of the stretchable panel 100 is, for example, the part of the stretchable panel 100 connected to each telescopic mechanism 200.

[0025] To establish the connection between the telescopic mechanism 200 and the stretchable panel 100, the display device 10 further includes a first adhesive layer 151 and a second adhesive layer 152. Specifically, the stretchable panel 100 also has a back surface 100bs facing away from the operating surface 100s, while the telescopic mechanism 200 has a receiving surface 200s facing the stretchable panel 100. It should be noted that the first adhesive layer 151 and the second adhesive layer 152 simultaneously connect the back surface 100bs of the stretchable panel 100 and the receiving surface 200s of the telescopic mechanism 200.

[0026] More specifically, the second adhesive layer 152 is disposed between the edge 200se of the receiving surface 200s and the first adhesive layer 151. For example, in this embodiment, the second adhesive layer 152 surrounds the first adhesive layer 151 and completely covers the portion of the receiving surface 200s not covered by the first adhesive layer 151. That is, the first adhesive layer 151 and the second adhesive layer 152 are arranged side by side on the receiving surface 200s of the telescopic mechanism 200, and in any direction parallel to the receiving surface 200s, the second adhesive layer 152 separates the edge 200se of the receiving surface 200s from the first adhesive layer 151.

[0027] From another perspective, the receiving surface 200s of the telescopic mechanism 200 has a width 200w along any direction parallel to the receiving surface 200s (e.g., direction X), while the first adhesive layer 151 has a width 151w along said any direction. Preferably, the ratio of the width 151w of the first adhesive layer 151 to the width 200w of the receiving surface 200s of the telescopic mechanism 200 can be less than or equal to 0.3.

[0028] It should be noted that, because the Young's modulus of the second adhesive layer 152 is greater than that of the first adhesive layer 151, the strain generated by the second adhesive layer 152 under stress when the stretchable panel 100 deforms will be lower than that generated by the first adhesive layer 151. Therefore, the stretchable panel 100 is less likely to peel off from the edge 200se of the receiving surface 200s of the stretching mechanism 200. In other words, the aforementioned configuration relationship and material property matching design of the first adhesive layer 151 and the second adhesive layer 152 can effectively improve the stability and durability of the display device 10 during deformation operations.

[0029] Preferably, the ratio of the Young's modulus of the second adhesive layer 152 to the Young's modulus of the first adhesive layer 151 is greater than or equal to 20 and less than or equal to 700. The Young's modulus of the first adhesive layer 151 may be greater than or equal to 0.01 MPa and less than or equal to 0.1 MPa. The Young's modulus of the second adhesive layer 152 may be greater than or equal to 2 MPa and less than or equal to 7 MPa. The first adhesive layer 151 is, for example, a pressure-sensitive adhesive (PSA) layer, and its material may include rubber, acrylic, silicone, or polyurethane (PU) adhesive. The second adhesive layer 152 is, for example, a liquid adhesive, and its material may include water-based adhesive, rubber, acrylic, silicone, resin, epoxy resin, hot melt adhesive, or silane.

[0030] It is worth mentioning that in the bonding process between the stretchable panel 100 and the telescopic mechanism 200, the pressing of the pressure-sensitive adhesive (i.e., the first adhesive layer 151) prevents misalignment and slippage between the stretchable panel 100 and the telescopic mechanism 200, thereby avoiding misalignment during subsequent processes such as the application, pressurization, and heat curing of the liquid adhesive (i.e., the second adhesive layer 152). In other words, the aforementioned configuration of the first adhesive layer 151 and the second adhesive layer 152 can also improve the accuracy and yield of the bonding process between the stretchable panel 100 and the telescopic mechanism 200.

[0031] The following examples illustrate this disclosure in detail, wherein the same components will be labeled with the same symbols, and descriptions of the same technical content will be omitted. For the omitted parts, please refer to the foregoing examples, which will not be repeated below.

[0032] Figure 5 is a cross-sectional schematic diagram of a display device according to a second embodiment of the present invention. Referring to Figure 5, compared to the display device 10 of Figure 3, the display device 10A of this embodiment may further include an auxiliary plate 250 attached to the back surface 100bs of the stretchable panel 100. It should be noted that the auxiliary plate 250 is located in the spaced area between the plurality of telescopic mechanisms 200.

[0033] Preferably, the auxiliary plate 250 has a Young's modulus greater than 1 GPa, and its thickness t is greater than or equal to 10 μm and less than or equal to 200 μm. The material of the auxiliary plate 250 includes, for example, polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), or stainless steel (SUS).

[0034] In this embodiment, to increase the protrusion height of the stretchable panel 100 during deformation as shown in FIG. 4B, the distance S' between two adjacent telescopic mechanisms 200 along the arrangement direction (e.g., direction X) can be greater than the distance S between two adjacent telescopic mechanisms 200 along the arrangement direction in FIG. 3. However, when the distance between two adjacent telescopic mechanisms 200 is too large, it is difficult to maintain the surface flatness of the stretchable panel 100 in the undeformed state; for example, the stretchable panel 100 is prone to denting in the interval area between two adjacent telescopic mechanisms 200. To this end, an auxiliary plate 250 can be added to improve the stiffness of the portion of the stretchable panel 100 located between the multiple telescopic mechanisms 200.

[0035] Preferably, in any direction parallel to the receiving surface 200s (e.g., direction X), the distance S1 between the auxiliary plate 250 and the edge 200se of the receiving surface 200s can be greater than or equal to 1 mm and less than or equal to 10 mm. For example, the auxiliary plate 250 can be attached to the back surface 100bs of the stretchable panel 100 by means of a third adhesive layer 153, wherein the third adhesive layer 153 is, for example, a liquid adhesive, but is not limited thereto.

[0036] Figure 6 is a cross-sectional schematic diagram of a display device according to a third embodiment of the present invention. Referring to Figure 6, compared to the display device 10A of Figure 5, the display device 10B of this embodiment may further include a support structure 300 disposed on the side of the stretchable panel 100 facing away from the operation surface 100s.

[0037] In detail, the support structure 300 may have a plurality of openings 300op and a support portion 310 defining these openings 300op. In the actuation direction (e.g., direction Z) of the telescopic mechanism 200, the plurality of openings 300op of the support structure 300 overlap with the plurality of telescopic mechanisms 200, and the telescopic mechanisms 200 are respectively connected to the stretchable panel 100 via these openings 300op.

[0038] For example, in this embodiment, the distance S” between any two adjacent telescopic mechanisms 200 along the arrangement direction (e.g., direction X) can be greater than the distance S' between any two adjacent telescopic mechanisms 200 along the arrangement direction in FIG. 5. Therefore, when the setting of the auxiliary plate 250 cannot meet the flatness required by the stretchable display panel 100 in the interval area between the two telescopic mechanisms 200, the stiffness of the portion of the stretchable panel 100 located between the multiple telescopic mechanisms 200 can be further improved by adding the support portion 310 of the support structure 300.

[0039] In the normal direction (e.g., direction Z) of the receiving surface 200s, the auxiliary plate 250 overlaps with the support portion 310 of the support structure 300. Of particular note is that the support portion 310 has sidewalls 310sw defining each opening 300op, and the auxiliary plate 250 protrudes from the sidewalls 310sw of the support portion 310. From another viewpoint, the auxiliary plate 250 has a plate edge 250e overlapping the opening 300op along direction Z. Preferably, in any direction parallel to the receiving surface 200s (e.g., direction X), the width 310w of the support portion 310 can be greater than or equal to 0.5 mm and less than or equal to 10 mm, while the distance S2 between the plate edge 250e of the auxiliary plate 250 and the sidewalls 310sw of the support portion 310 can be greater than or equal to 0.5 mm and less than or equal to 5 mm.

[0040] In summary, in a display device according to an embodiment of the present invention, a first adhesive layer and a second adhesive layer are provided on the receiving surface of the telescopic mechanism, and a stretchable panel is connected via these two adhesive layers. Since the second adhesive layer is located between the edge of the receiving surface and the first adhesive layer, and the Young's modulus of the second adhesive layer is greater than that of the first adhesive layer, the phenomenon of the stretchable panel peeling off from the telescopic mechanism after multiple deformations can be effectively suppressed, which helps to improve the stability of the display device during deformation operation.

[0041] 10, 10A, 10B: Display devices 50: Central Control Platform 100: Stretchable panel 100bs: Back 100s: Operation Panel 151: First adhesive layer 151w, 200w, 310w: Width 152: Second adhesive layer 153: Third adhesive layer 200: Telescopic mechanism 200s: Receiving surface 200se: Edge 250: Auxiliary board 250e: Plate edge 300: Supporting structure 300op: Opening 310: Support section 310sw: Sidewall S, S', S”, S1, S2: Spacing t: thickness X, Y, Z: Direction A-A': section line

Claims

1. A central control platform, comprising: A stretchable panel having an operating surface; a plurality of telescopic mechanisms disposed on the side of the stretchable panel opposite to the operating surface, each having a receiving surface facing the stretchable panel, the telescopic mechanisms being adapted to deform the stretchable panel along a direction intersecting the operating surface; and an auxiliary plate attached to a back surface of the stretchable panel opposite to the operating surface and positioned between the telescopic mechanisms, wherein the edge of the receiving surface of each of the telescopic mechanisms and the auxiliary plate are spaced at a first distance greater than or equal to 1 mm and less than or equal to 10 mm along any direction parallel to the receiving surface.

2. The central control platform as claimed in claim 1, wherein each of the telescopic mechanisms is adapted to cause a portion of the stretchable panel to be recessed toward one side of the rear face or protruded toward one side of the operating face.

3. The central control platform as claimed in claim 1, wherein the telescopic mechanisms are arranged in a honeycomb pattern on the orthographic projection of the operating surface.

4. The central control platform as described in claim 1 further includes: A first adhesive layer connects the stretchable panel to the receiving surface of each of the telescopic mechanisms; And a second adhesive layer connecting the stretchable panel to the receiving surface of each of the telescopic mechanisms, wherein the second adhesive layer surrounds the first adhesive layer and covers the portion of the receiving surface not covered by the first adhesive layer.

5. The central control platform as claimed in claim 4, wherein the ratio of the Young's modulus of the second adhesive layer to the Young's modulus of the first adhesive layer is greater than or equal to 20 and less than or equal to 700.

6. The central control platform as claimed in claim 4, wherein the receiving surface of each of the telescopic mechanisms has a first width along any direction parallel to the receiving surface, the first adhesive layer has a second width along the any direction, and the ratio of the second width to the first width is less than or equal to 0.

3.

7. The central control platform as described in claim 1, wherein the Young's modulus of the auxiliary board is greater than 1 GPa.

8. The central control platform as described in claim 1 further includes: A support structure is disposed on the side of the stretchable panel opposite to the operating surface, and has a plurality of openings overlapping the stretchable panel and a support portion defining the openings, wherein the telescopic mechanisms are respectively connected to the stretchable panel through the openings, and the auxiliary plate is disposed overlapping the support portion of the support structure.

9. The central control platform as claimed in claim 8, wherein the support has a side wall defining any of the openings, and the auxiliary plate protrudes from the side wall of the support.

10. The central control platform as claimed in claim 9, wherein the auxiliary plate has an edge overlapping any of the openings, and a second distance between the edge of the auxiliary plate and the sidewall of the support in any direction is greater than or equal to 0.5 mm and less than or equal to 5 mm.

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