Display device

Abstract

A display device comprises a lifting mechanism, a flexible display panel and a bonding layer. The lifting mechanism comprises a fixed part and a movable part, and the fixed part is located on the outer side of the movable part. The flexible display panel is arranged on the lifting mechanism and provided with a first area and a second area, the second area is located on the outer side of the first area, and the movable part is suitable for being lifted relative to the fixed part to drive the first area to protrude upwards relative to the second area. The bonding layer is arranged between the lifting mechanism and the flexible display panel, the bonding layer comprises a first adhesive part and a non-adhesive area, the first adhesive part at least corresponds to the fixed part, and the non-adhesive area corresponds to at least one part of the movable part and a part, close to the movable part, of the fixed part.

Description

Technical Field

[0001] The present invention relates to a display device, and in particular to a display device including a flexible display panel. Background Art

[0002] With the development of the information society, the demand for various electronic devices that display images is increasing, such as smartphones, laptops, navigation systems, and smart TVs. Generally speaking, touch screens can be used as input units for electronic devices, allowing users to input commands by touching the screen with their hands or objects, and can also implement a touch-sensitive virtual keyboard on the screen.

[0003] However, since the virtual keyboard has no physical protrusion, it is difficult for users to type quickly and accurately without feedback like a physical keyboard. Summary of the Invention

[0004] The present invention provides a display device that can be switched between a flat surface and a curved surface through a flexible display panel, and can avoid the concentration of strain in a specific area during the switching process, thereby causing a large strain.

[0005] The display device of the present invention includes a lifting mechanism, a flexible display panel, and a bonding layer. The lifting mechanism includes a fixed portion and a movable portion, with the fixed portion being located outside the movable portion. The flexible display panel is disposed on the lifting mechanism and has a first region and a second region, with the second region being located outside the first region, wherein the movable portion is adapted to be lifted relative to the fixed portion to drive the first region upward so as to protrude relative to the second region. The bonding layer is disposed between the lifting mechanism and the flexible display panel and includes a first adhesive portion and a non-adhesive region, wherein the first adhesive portion at least corresponds to the fixed portion, and the non-adhesive region corresponds to at least a portion of the movable portion and a portion of the fixed portion proximal to the movable portion.

[0006] In one embodiment of the present invention, the fixing portion includes an accommodating space, and the movable portion is movably disposed in the accommodating space along a first direction.

[0007] In one embodiment of the present invention, the lifting mechanism further includes a driving portion connected to the movable portion.

[0008] In one embodiment of the present invention, in the first direction, the non-adhesive area at least overlaps the boundary between the movable portion and the fixed portion.

[0009] In one embodiment of the present invention, the above-mentioned fixing portion includes a first side and a second side adjacent to each other, the first side faces the flexible display panel, and the second side faces the accommodating space. The non-adhesive area has an outer end close to the first adhesive portion, and the outer end overlaps with the fixing portion in the first direction.

[0010] In one embodiment of the present invention, in a second direction perpendicular to the first direction, there is a distance between the outer end and the second side.

[0011] In one embodiment of the present invention, the movable portion includes a top surface facing the flexible display panel and a side wall connected to the top surface. In a second direction perpendicular to the first direction, a distance exists between the first adhesive portion and the side wall.

[0012] In one embodiment of the present invention, the non-adhesive area includes a first portion, and the first portion is close to the periphery of the movable portion.

[0013] In one embodiment of the present invention, the non-adhesive area includes a second portion, the second portion is close to the center of the movable portion, and the second portion is separated from the first portion.

[0014] In one embodiment of the present invention, the non-adhesive area is located between the first adhesive portion and the flexible display panel, or the non-adhesive area is located between the first adhesive portion and the lifting mechanism.

[0015] Based on the above, in the display device of the present invention, the bonding layer is arranged between the lifting mechanism and the flexible display panel, and the bonding layer includes a first adhesive portion and a non-adhesive area. The first adhesive portion at least corresponds to the fixed portion, and the non-adhesive area corresponds to at least a portion of the movable portion and a portion of the corresponding fixed portion close to the movable portion, which can avoid the strain being concentrated in a specific area during the switching process to cause large strain.

[0016] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0018] Figure 1B yes Figure 1A A cross-sectional schematic diagram of the display device in another state.

[0019] Figure 2A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0020] Figure 2B yes Figure 2A A cross-sectional schematic diagram of the display device in another state.

[0021] Figure 3 FIG. 1 is a disassembled diagram of a display device according to an embodiment of the present invention.

[0022] Figure 4A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0023] Figure 4B yes Figure 4A A cross-sectional schematic diagram of the display device in another state.

[0024] Figure 5A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0025] Figure 5B yes Figure 5A A cross-sectional schematic diagram of the display device in another state.

[0026] Figure 6A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0027] Figure 6B yes Figure 6A A cross-sectional schematic diagram of the display device in another state.

[0028] Figure 6C FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0029] Figure 6D yes Figure 6C A cross-sectional schematic diagram of the display device in another state.

[0030] Figure 7A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0031] Figure 7B yes Figure 7A A cross-sectional schematic diagram of the display device in another state.

[0032] Figure 8A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention.

[0033] Figure 8B yes Figure 8A A cross-sectional schematic diagram of the display device in another state.

[0034] Description of reference numerals:

[0035] 100, 100A, 100B, 100C, 100D, 100E, 100F, 100G: display device 110, 110A: lifting mechanism

[0036] 111, 111A: fixed part

[0037] 1111: Accommodation space

[0038] 112, 112A: Activities Department

[0039] 113, 113A: Drive unit

[0040] 1131: First magnetic part

[0041] 1132: Second magnetic element

[0042] 120: Flexible display panel

[0043] 121: District 1

[0044] 122: District 2

[0045] 130, 130B, 130C, 130D, 130E, 130F, 130G: Bonding layer

[0046] 131, 131B, 131C, 131D, 131E, 131F, 131G: first adhesive portion

[0047] 132, 132B, 132C, 132D, 132E, 132F, 132G: Non-sticky area

[0048] 1321, 1321B, 1321C, 1321D, 1321E, 1321F, 1321G: outer ends 133B, 133C: second adhesive portion

[0049] P1: Part 1

[0050] P2: Part 2

[0051] S1: First side

[0052] S2: Second side

[0053] T1, T2, T3: distance

[0054] N1: First direction

[0055] N2: Second direction

[0056] R1: Junction

[0057] W1: Top surface

[0058] W2: Sidewall DETAILED DESCRIPTION

[0059] Figure 1A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 1B yes Figure 1A A cross-sectional schematic diagram of the display device in another state. Figure 2A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 2B yes Figure 2A A cross-sectional schematic diagram of the display device in another state. Figure 3 FIG. 1 is a disassembled diagram of a display device according to an embodiment of the present invention.

[0060] Please refer to Figure 1Aand Figure 1B The display device 100 of this embodiment includes a lifting mechanism 110, a flexible display panel 120, and a bonding layer 130. The lifting mechanism 110 includes a fixed portion 111, a movable portion 112, and a driving portion 113. The fixed portion 111 includes a receiving space 1111, and the movable portion 112 is movably located in the receiving space 1111. In other words, the fixed portion 111 is located outside the movable portion 112.

[0061] In this embodiment, the flexible display panel 120 is disposed on the lifting mechanism 110 and has a first area 121 and a second area 122 . The second area 122 surrounds the first area 121 , that is, the second area 122 is located outside the first area 121 .

[0062] In this embodiment, the movable portion 112 is adapted to be lifted relative to the fixed portion 111 to drive the first region 121 upward to protrude relative to the second region 122 , but the present invention is not limited thereto.

[0063] In this embodiment, the driving portion 113 is connected to the movable portion 112, which is movably disposed in the accommodating space 1111 along a first direction N1. When the movable portion 112 is located in the accommodating space 1111, the movable portion 112 does not contact the flexible display panel 120. When the movable portion 112 moves upward out of the accommodating space 1111, the movable portion 112 directly contacts the first area 121 of the flexible display panel 120. Here, the driving portion 113 is a lifting column and can be driven by a power source (e.g., a motor) to move the driving portion 113 up and down along the first direction N1, thereby driving the movable portion 112 to move up and down along the first direction N1, but the present invention is not limited to this.

[0064] In another embodiment, please refer to Figure 2A and Figure 2B , the display device 100A includes a lifting mechanism 110A, and the lifting mechanism 110A includes a fixed part 111A, a movable part 112A and a driving part 113A. The driving part 113A is a magnetic component, and the driving part 113A includes a first magnetic part 1131 and a second magnetic part 1132. The driving part 113A uses the magnetic repulsion or magnetic attraction generated between the first magnetic part 1131 and the second magnetic part 1132 to move the movable part 112A up and down, but is not limited to this. In one embodiment, the first magnetic part 1131 is, for example, an electromagnet, and the second magnetic part 1132 is, for example, a permanent magnet. When current flows through the first magnetic part 1131, the first magnetic part 1131 generates polarity. In addition, when no current flows through the first magnetic part 1131, the first magnetic part 1131 is demagnetized and has no polarity, but the present invention is not limited to this.

[0065] In this embodiment, the flexible display panel 120 allows the display device 100 to switch between two states, namely, a flat surface and a curved surface. For example, when the flexible display panel 120 is used as a screen, the flexible display panel 120 remains flat. Figure 1A As shown, the flexible display panel 120 has a uniform surface, which can prevent unintentional touch input errors. When the user needs to operate a key, the lifting mechanism 110 can be used to make a part of the flexible display panel 120 (for example, the first area 121) protrude to form a physical key. Figure 1B As shown, the flexible display panel 120 has a non-uniform surface. Therefore, the user can type quickly and accurately with feedback, just like operating a physical keyboard. Figure 1A and Figure 1B The single-area protrusion is schematically shown, for example, to present a state of a single button protrusion. However, in other embodiments, the first area 121 may be configured into multiple distributions to form multiple protrusions, and the present invention is not limited thereto.

[0066] Specifically, in this embodiment, the bonding layer 130 is disposed between the lifting mechanism 110 and the flexible display panel 120. The bonding layer 130 includes a first adhesive portion 131 and a non-adhesive region 132. Here, the first adhesive portion 131 is a colloid, and the non-adhesive region 132 is an air gap, but the present invention is not limited to this. In this embodiment, the first adhesive portion 131 corresponds to at least the fixed portion 111, while the non-adhesive region 132 corresponds to at least a portion of the movable portion 112 and a portion of the fixed portion 111 near the movable portion 112.

[0067] In this embodiment, in the first direction N1, the non-adhesive region 132 overlaps at least at the boundary R1 between the movable portion 112 and the fixed portion 111. Specifically, the fixed portion 111 includes a first side S1 and a second side S2 adjacent to each other. The first side S1 faces the flexible display panel 120, and the second side S2 faces the accommodating space 1111. The non-adhesive region 132 has an outer end 1321 proximal to the first adhesive portion 131. The outer end 1321 overlaps the fixed portion 111 in the first direction N1. In a second direction N2 perpendicular to the first direction N1, a distance T1 is defined between the outer end 1321 and the second side S2. The distance T1 is greater than 2 micrometers (μm), but the present invention is not limited thereto. Furthermore, the movable portion 112 includes a top surface W1 facing the flexible display panel 120 and a side wall W2 connected to the top surface W1. In the second direction N2, a distance T2 is defined between the first adhesive portion 131 and the side wall W2. The distance T2 is greater than 2 μm, but the present invention is not limited thereto.

[0068] In this embodiment, the non-adhesive area 132 completely overlaps the top surface W1 and extends to a portion of the first side S1. Therefore, at the top of the lift, the flexible display panel 120 is not adhered to the movable portion 112 (some areas are not adhesively coated). Here, the entire top surface W1 is non-adhesive, but the present invention is not limited to this. In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 that is adhered is ≤ 90%, but the present invention is not limited to this.

[0069] In this embodiment, the extension direction of the side wall W2 is parallel to the first direction N1, that is, the side wall W2 is perpendicular to the top surface W1, and the cross-section of the movable portion 112 is square. However, in other embodiments, the side wall W2 may also be inclined to the first direction N1, that is, the side wall W2 is inclined to the top surface W1, so that the cross-section of the movable portion 112 is trapezoidal, and the present invention is not limited to this.

[0070] Please refer to Figure 1A and Figure 3 In this embodiment, the non-adhesive area 132 completely covers the movable portion 112 and covers the area above the boundary R1 between the movable portion 112 and the fixed portion 111, but the present invention is not limited to this. In other embodiments, the non-adhesive area 132 may be provided only at the corners of the boundary R1 between the movable portion 112 and the fixed portion 111. In other words, the air gap above the movable portion 112 is not formed entirely over the entire surface, but rather only at the intersections R1 of the corners. The present invention is not limited to this.

[0071] In the above configuration, the non-adhesive area 132 allows the movable portion 112 to slide with the flexible display panel 120 , thereby preventing the strain from being concentrated in a specific area and causing a large strain when the flexible display panel 120 is curved from a flat surface.

[0072] The following examples are provided for illustration purposes only. It should be noted that the following examples share the same component numbers and some of the details as the previous examples, with the same numbers used to represent the same or similar components, and descriptions of the same technical details omitted. For the omitted details, please refer to the previous examples, and the following examples will not be repeated.

[0073] Figure 4A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 4B yes Figure 4A A cross-sectional view of the display device in another state. It should be noted that Figure 4A and Figure 4B The drive unit is omitted. The configuration and operation of the drive unit can be referred to Figure 1A and Figure 1B Implementation instructions for, but not limited to.

[0074] Please refer to Figure 4Aand Figure 4B In this embodiment, the bonding layer 130B of the display device 100B includes a first adhesive portion 131B, a second adhesive portion 133B, and a non-adhesive region 132B. Here, the non-adhesive region 132B is an air gap, but the present invention is not limited thereto.

[0075] In this embodiment, the non-adhesive area 132B includes a first portion P1, which is close to the side wall W2 at the periphery of the movable portion 112. The first portion P1 is located outside the second adhesive portion 133B. There is a distance T3 between the second adhesive portion 133B and the side wall W2. The distance T3 is greater than 2 microns (μm), but the present invention is not limited to this.

[0076] In this embodiment, the outer end 1321B of the non-adhesive region 132B closest to the second region 122 overlaps the fixed portion 111 in the first direction N1. In the second direction N2, a distance T1 is defined between the outer end 1321B of the non-adhesive region 132B and the second side S2. Furthermore, a distance T2 is defined between the first adhesive portion 131B and the sidewall W2 in the second direction N2. Therefore, at the lifting and climbing position, the flexible display panel 120 is not adhered and fixed to the movable portion 112 (some areas are not adhesively applied). Here, a second adhesive portion 133B is provided above the lifting top surface W1, so that it is partially non-adhesive to the flexible display panel 120, but the present invention is not limited to this. In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 is ≤ 90%, but the present invention is not limited to this. In this way, the non-adhesive area 132B allows the movable portion 112 and the flexible display panel 120 to slide, thereby preventing the strain from being concentrated in a specific area and causing a large strain when the flexible display panel 120 is turned from a flat surface to a curved surface.

[0077] Figure 5A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 5B yes Figure 5A A cross-sectional view of the display device in another state. It should be noted that Figure 5A and Figure 5B The drive unit is omitted. The configuration and operation of the drive unit can be referred to Figure 1A and Figure 1B Implementation instructions for, but not limited to.

[0078] Please refer to Figure 5A and Figure 5B In this embodiment, the bonding layer 130C of the display device 100C includes a first adhesive portion 131C, a second adhesive portion 133C, and a non-adhesive region 132C. Here, the non-adhesive region 132C is an air gap, but the present invention is not limited thereto. For example, the second adhesive portion 133C is divided into segments by a plurality of air gaps, but the present invention is not limited thereto.

[0079] In this embodiment, the non-adhesive region 132C includes a first portion P1 and a second portion P2. The first portion P1 is located outside the second adhesive portion 133C and is close to the sidewall W2 at the periphery of the movable portion 112. A distance T3 is defined between the second adhesive portion 133C near the second region 122 and the sidewall W2. The second portion P2 is located near the center of the movable portion 112 and is separated from the first portion P1.

[0080] In this embodiment, the outer end 1321C of the non-adhesive region 132C closest to the second region 122 overlaps the fixed portion 111 in the first direction N1. In the second direction N2, a distance T1 exists between the outer end 1321C of the non-adhesive region 132C and the second side S2. Furthermore, a distance T2 exists between the first adhesive portion 131C and the sidewall W2 in the second direction N2. Therefore, during the lifting and climbing process, the flexible display panel 120 is not adhered to the movable portion 112 (partially unadhesive). Here, the lifting top surface W1 is partially unadhesive, but the present invention is not limited to this. In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 that is adhered is ≤ 90%, but the present invention is not limited to this. This allows the non-adhesive region 132C to slide between the movable portion 112 and the flexible display panel 120, preventing strain concentration in specific areas of the flexible display panel 120 when the flat surface transforms into a curved surface.

[0081] Figure 6A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 6B yes Figure 6A A cross-sectional schematic diagram of the display device in another state. Figure 6C FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 6D yes Figure 6C A cross-sectional view of the display device in another state. It should be noted that 6A to 6D The drive unit is omitted. The configuration and operation of the drive unit can be referred to Figure 1A and Figure 1B Implementation instructions for, but not limited to.

[0082] Please refer to Figure 6A and Figure 6B In this embodiment, the bonding layer 130D of the display device 100D includes a first adhesive portion 131D and a non-adhesive region 132D. The non-adhesive region 132D is located between the first adhesive portion 131D and the first region 121. Here, the non-adhesive region 132D is formed by partially treating the upper surface of the first adhesive portion 131D. The surface treatment may be ashing to render the adhesive non-adhesive, but the present invention is not limited thereto.

[0083] In this embodiment, the non-adhesive area 132D is located between the first adhesive portion 131D and the flexible display panel 120, but the present invention is not limited thereto. Figure 6C and Figure 6D The non-adhesive region 132E is located between the first adhesive portion 131E and the lifting mechanism 110. An outer end 1321E of the non-adhesive region 132E, closest to the second region 122, overlaps the fixing portion 111 in the first direction N1. The non-adhesive region 132E is formed by partially treating the lower surface of the first adhesive portion 131E with ashing, for example, but the present invention is not limited thereto.

[0084] Please continue to refer to Figure 6A and Figure 6B , the outer end 1321D of the non-adhesive area 132D closest to the second area 122 overlaps the fixed portion 111 in the first direction N1. In the second direction N2, a distance T1 is present between the outer end 1321D of the non-adhesive area 132D and the second side S2. Therefore, at the jacking and climbing position, the flexible display panel 120 is not adhered and fixed to the movable portion 112 (partial area is non-adhesive). In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 is ≤ 90%, but the present invention is not limited to this. In this way, the non-adhesive area 132D allows the movable portion 112 and the flexible display panel 120 to slide, thereby preventing the flexible display panel 120 from being subjected to high strain due to strain concentration in a specific area when the flat surface is converted into a curved surface.

[0085] Figure 7A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 7B yes Figure 7A A cross-sectional view of the display device in another state. It should be noted that Figure 7A and Figure 7B The drive unit is omitted. The configuration and operation of the drive unit can be referred to Figure 1A and Figure 1B Implementation instructions for, but not limited to.

[0086] Please refer to Figure 7A and Figure 7B The bonding layer 130F of the display device 100F of this embodiment includes a first adhesive portion 131F and a non-adhesive region 132F. The non-adhesive region 132F includes a first portion P1 adjacent to the sidewall W2 of the movable portion 112 .

[0087] In this embodiment, the outer end 1321F of the non-adhesive region 132F closest to the second region 122 overlaps the fixed portion 111 in the first direction N1. In the second direction N2, a distance T1 is defined between the outer end 1321F of the non-adhesive region 132F and the second side S2. Therefore, during the ascent and descent, the flexible display panel 120 is not adhered to the movable portion 112 (partially non-adhesive). In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 is ≤ 90%, but the present invention is not limited thereto. In this way, the non-adhesive region 132F allows for sliding movement between the movable portion 112 and the flexible display panel 120, preventing strain from concentrating in specific areas and causing high strain when the flexible display panel 120 transforms from a flat surface to a curved surface.

[0088] Figure 8A FIG. 1 is a cross-sectional schematic diagram of a display device according to an embodiment of the present invention. Figure 8B yes Figure 8A A cross-sectional view of the display device in another state. It should be noted that Figure 8A and Figure 8B The drive unit is omitted. The configuration and operation of the drive unit can be referred to Figure 1A and Figure 1B Implementation instructions for, but not limited to.

[0089] Please refer to Figure 8A and Figure 8B The bonding layer 130G of the display device 100G of this embodiment includes a first adhesive portion 131G and a non-adhesive region 132G. The non-adhesive region 132G includes a first portion P1 and a second portion P2. The first portion P1 is adjacent to the sidewall W2 of the movable portion 112. The second portion P2 is adjacent to the center of the movable portion 112 and is separated from the first portion P1. The second portion P2 is segmented and disposed on the upper surface of the first adhesive portion 131G facing the flexible display panel 120, but the present invention is not limited thereto.

[0090] In this embodiment, the outer end 1321G of the non-adhesive region 132G, which is adjacent to the second region 122, overlaps the fixed portion 111 in the first direction N1. In the second direction N2, a distance T1 is defined between the outer end 1321G of the non-adhesive region 132GD, which is adjacent to the second region 122, and the second side S2. Therefore, during the ascent and descent, the flexible display panel 120 is not adhered to the movable portion 112 (partially non-adhesive). In one embodiment, the area ratio of the top surface W1 of the movable portion 112 to the flexible display panel 120 is ≤ 90%, but the present invention is not limited thereto. In this way, the non-adhesive region 132G allows for sliding movement between the movable portion 112 and the flexible display panel 120, preventing strain from concentrating in specific areas and causing high strain when the flexible display panel 120 transitions from a flat surface to a curved surface.

[0091] In summary, in the display device of the present invention, the flexible display panel is disposed on a lifting mechanism, which includes a movable portion and a fixed portion. The movable portion propels the flexible display panel, allowing the display device to be freely switched between a flat and curved state. A bonding layer is disposed between the lifting mechanism and the flexible display panel, and includes a first adhesive portion and a non-adhesive region. The non-adhesive region overlaps at least at the interface between the movable portion and the fixed portion. Therefore, the flexible display panel is not completely fixed to the movable portion. Therefore, the non-adhesive region allows the movable portion and the flexible display panel to slide, preventing strain concentration in specific areas of the flexible display panel when the flat surface is converted to a curved surface, thereby preventing high strain.

[0092] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Any person skilled in the art may make slight changes and modifications without departing from the concept and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A display device comprising: A lifting mechanism comprising a fixed portion and a movable portion, wherein the fixed portion is located outside the movable portion; a flexible display panel disposed on the lifting mechanism and having a first area and a second area, the second area being located outside the first area, wherein the movable portion is adapted to be lifted relative to the fixed portion to drive the first area upward to protrude relative to the second area; and A bonding layer is arranged between the lifting mechanism and the flexible display panel, and the bonding layer includes a first adhesive portion and a non-adhesive area. The first adhesive portion at least corresponds to the fixed portion, and the non-adhesive area corresponds to at least a portion of the movable portion and a portion of the fixed portion close to the movable portion. 2 . The display device as claimed in claim 1 , wherein the fixed portion comprises a receiving space, and the movable portion is movably disposed in the receiving space along a first direction. 3 . The display device as claimed in claim 2 , wherein the lifting mechanism further comprises a driving portion connected to the movable portion. 4 . The display device as claimed in claim 2 , wherein in the first direction, the non-adhesive area at least overlaps a boundary between the movable portion and the fixed portion.

5. The display device as claimed in claim 2, wherein the fixing portion includes a first side and a second side adjacent to each other, the first side faces the flexible display panel, the second side faces the accommodating space, and the non-adhesive area has an outer end close to the first adhesive portion, and the outer end overlaps the fixing portion in the first direction. 6 . The display device as claimed in claim 5 , wherein in a second direction perpendicular to the first direction, there is a distance between the outer end and the second side.

7. The display device as claimed in claim 2, wherein the movable portion comprises a top surface facing the flexible display panel and a side wall connected to the top surface, and in a second direction perpendicular to the first direction, there is a distance between the first adhesive portion and the side wall. 8 . The display device as claimed in claim 1 , wherein the non-adhesive area comprises a first portion, and the first portion is close to a periphery of the movable portion. 9 . The display device as claimed in claim 8 , wherein the non-adhesive area comprises a second portion, the second portion is close to the center of the movable portion, and the second portion is separated from the first portion. 10 . The display device as claimed in claim 1 , wherein the non-adhesive area is located between the first adhesive portion and the flexible display panel, or the non-adhesive area is located between the first adhesive portion and the lifting mechanism.

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