TWI737243B - Display - Google Patents

Abstract

A display includes a carrying main body, a flexible carrier film, a double-sided tape and an adhesive layer. The flexible carrier film includes a first bonding section, a second bonding section and a bending section. The first bonding section and the second bonding section are disposed on two opposite sides of the carrying main body respectively, and the bending section is connected between the first bonding section and the second bonding section. The flexible carrier film has an inner surface and an outer surface opposite to each other, and the inner surface has at least one groove at the bending section. The flexible carrier film has a display layer thereon. At least a part of the display layer is connected to the outer surface at the second bonding section. The double-sided tape is disposed between the first bonding section and the carrying main body. The adhesive layer is disposed between the inner surface and the carrying main body at the bending section.

Description

Display device

The present invention relates to a display device, and more particularly to a display device including a flexible carrier film layer.

With the development of flat display technology, electronic products that use display panels as display interfaces, such as notebook computers, tablet computers, and smart phones, have been popular in the consumer market for a long time. In order to reduce the size of the device and in response to the design trend of narrow bezels, many display panels and their control elements are respectively arranged on the front and back sides of the body, and are bent and extended between the front and back sides of the flexible carrier film And connected to each other. In this configuration, the non-bending section of the flexible carrier film layer is usually glued to the body by double-sided tape. However, the stress caused by the bending of the flexible carrier film layer can easily cause the double-sided tape to be exposed to high temperature and high humidity. Separated from the soft carrier film or the body in the state. If in order to overcome the above problems, the flexible carrier film is filled with glue in the bending section to strengthen the glue, the glue may overflow to the double-sided tape and the double-sided tape loses its viscosity, or overflows to Other parts of the device cause pollution.

The present invention provides a display device, which enables a flexible carrier film layer to be stably arranged on a carrying body.

The display device of the present invention includes a supporting body, a flexible carrier film layer, a double-sided tape, and an adhesive layer. The flexible carrier film layer includes a first joining section, a second joining section and a bending section. The first joining section and the second joining section are respectively arranged on opposite sides of the carrying body, and the bending section is connected between the first joining section and the second joining section. The flexible carrier film layer has an inner surface and an outer surface opposite to each other, and the inner surface has at least one first groove in the bending section. There is a display layer on the soft carrier film layer. At least part of the display layer is connected to the outer surface at the second bonding section. The double-sided tape is arranged between the first joining section and the carrying body. The glue layer is arranged between the inner surface and the carrying body in the bending section.

In an embodiment of the present invention, the aforementioned bending section extends from the second joining section to the first joining section along a first direction, at least one first groove extends along a second direction, and the second direction Perpendicular to the first direction.

In an embodiment of the present invention, the number of the above-mentioned at least one first groove is multiple, and the first grooves are sequentially arranged along the first direction.

In an embodiment of the present invention, the aforementioned inner surface has at least one second groove in the bending section, and at least one second groove extends along the first direction.

In an embodiment of the present invention, the above-mentioned flexible carrier film layer has two edge areas, at least one first groove is located between the two edge areas, and at least one second groove is located at at least one edge area.

In an embodiment of the present invention, the aforementioned inner surface has at least one second groove in the bending section, and at least one second groove extends from the bending section to the second joining section.

In an embodiment of the present invention, the aforementioned glue layer includes at least two glued parts, and the at least two glued parts are respectively located at different positions on the inner surface and separated from each other.

In an embodiment of the present invention, the above-mentioned bending section extends from the second joining section to the first joining section along a first direction, and at least two glued parts are separated from each other in the first direction.

In an embodiment of the present invention, the above-mentioned glue layer includes at least two glued parts, the at least two glued parts are respectively located at different positions on the inner surface, and the materials of the at least two glued parts are different.

In an embodiment of the present invention, the above-mentioned display device further includes a film layer, wherein the film layer is disposed in the first joining section, the double-sided tape is disposed on the film layer, and one end of the film layer faces the bending section, at least There is a distance between a first groove and the end of the film layer.

In an embodiment of the present invention, the above-mentioned display device further includes a film layer, wherein the film layer is disposed in the first joining section, the double-sided tape is disposed on the film layer, and the film layer has at least one third groove.

In an embodiment of the present invention, the above-mentioned bending section extends from the second joining section to the first joining section along a first direction, at least one third groove extends along a second direction, and the second direction Perpendicular to the first direction.

In an embodiment of the present invention, the above-mentioned bending section extends from the second joining section to the first joining section along a first direction, and the bending section includes a first subsection and a second subsection. Section, the first subsection is connected between the second joining section and the second subsection, and the width of the second subsection along a second direction perpendicular to the first direction is greater than the width of the first subsection along the first subsection. Width in two directions.

In an embodiment of the present invention, the above-mentioned carrying body has an end surface, the end surface faces the bending section and is not located in a recessed space formed by the bending section, and the adhesive layer is disposed on the end surface.

In an embodiment of the present invention, the volume of the aforementioned adhesive layer is 50% to 70% of the volume of the fillable space between the flexible carrier film layer and the supporting body.

In an embodiment of the present invention, the above-mentioned carrying body has an end surface and a protruding portion extending from the end surface, and the end surface faces the bending section and is not located in a recessed space formed by the bending section, at least partially The protruding part is located in the recessed space, and the glue layer is arranged on the protruding part.

In an embodiment of the present invention, the above-mentioned bending section extends from the second joining section to the first joining section along a first direction, and the inner surface forms a concave arc surface at the bending portion. The radius of curvature is R, and the extension length of the adhesive layer along the first direction is greater than or equal to πR/2.

In an embodiment of the present invention, the above-mentioned flexible carrier film layer has at least one perforation in the bending section.

Based on the above, in the display device of the present invention, in addition to using double-sided tape to glue the joint section of the soft carrier film layer to the carrier body, it also uses the glue layer to glue the bending section of the soft carrier film layer. The method is arranged on the carrying body to firmly fix the whole of the soft carrier film layer, so as to prevent the joining section from being separated from the carrying body due to the bending stress of the bending section. In addition, the flexible carrier film layer has grooves in the bending section that can limit the flow range of the glue in a specific direction, so it can prevent the glue from overflowing to the double-sided tape and causing the double-sided tape to lose its viscosity. happen.

FIG. 1 is a partial cross-sectional view of a display device according to an embodiment of the invention. Please refer to FIG. 1, the display device 100 of this embodiment includes a supporting body 110, a flexible carrier film 120, an adhesive layer 140, two film layers 150 and a double-sided tape 160. The flexible carrier film layer 120 is composed of an insulating film, a metal film, etc., and there are circuit elements and a display medium (such as the display medium 132 described later) thereon. The flexible carrier film 120 includes a first bonding section 122, a second bonding section 124, and a bending section 126. The first joint section 122 and the second joint section 124 are respectively disposed on opposite sides of the carrier body 110, and the bending section 126 is connected between the first joint section 122 and the second joint section 124.

The flexible carrier film 120 has an inner surface 120a and an outer surface 120b opposite to each other. The flexible carrier film 120 has a display layer 128, and the display layer 130 is connected to the outer surface 120 b of the flexible carrier film 120 at the second bonding section 124 of the flexible carrier film 120. In other embodiments, the display layer 128 may extend to the bending section 126 and may even extend to the first joining section 122. The present invention does not limit the position of the display layer 128 on the flexible carrier film layer 120. The display layer 130 includes a display medium 132, a protective cover plate 134 and a glue layer 136 glued between the display medium 132 and the protective cover plate 134 arranged on the second joining section 124. The protective cover plate 134 is a soft protection膜层。 Film layer. The material of the film layer 150 is, for example, polyethylene terephthalate (PET), and the two film layers 150 are respectively disposed in the first joint section 122 and the second joint section 124 of the flexible carrier film layer 120. A support film layer 170 is located on the film layer 150 on the carrier body 110 and the second joining section 124. The support film layer 170 includes a support material 172 and a glued arrangement between the support material 172 and the film layer 150.胶层174。 胶层174. The double-sided tape 160 is disposed between the film layer 150 at the first joining section 122 of the flexible carrier film layer 120 and the carrier body 110 by gluing, and is disposed between the support material 172 and the main body 110 by gluing. The glue layer 140 is disposed between the inner surface 120a of the soft carrier film 120 and the supporting body 110 in the bending section 126 of the soft carrier film 120 by gluing, and the glue layer 140 is also disposed on the soft carrier by gluing. Between the second joining section 124 of the film layer 120 and the carrier body 110. A protective film layer 122a is provided on the first bonding section 122.

As described above, in this embodiment, in addition to using the double-sided tape 160 to glue the first joining section 122 of the flexible carrier film 120 to the carrier body 110, it also uses the adhesive layer 140 to bend the flexible carrier film 120. The section 126 and the second joint section 124 are disposed on the carrier body 110 in a gluing manner to firmly fix the entire soft carrier film 120, so as to prevent the first joint section 122 from bending the section 126 The bending stress is separated from the carrying body 110.

2A and 2B illustrate the process of gluing the flexible carrier film layer of FIG. 1 to the supporting body. In the process of manufacturing the display device 100, the adhesive 140' can be provided on the unfolded flexible carrier film 120 as shown in FIG. 2A, and then the flexible carrier film 120 is bent upward as shown in FIG. 2B. In the state shown in 1, the glue 140' is caused to flow to the upper and lower sides of the supporting body 110 due to the pushing of the soft carrier film 120. The glue material 140' of this embodiment is, for example, a thermosetting glue material. In the above process, the glue material 140' can be gradually heated to cure it into the glue layer 140 shown in FIG. The heat curing adhesive material is preferably a low temperature heat curing adhesive material. In other embodiments, the adhesive material 140' may be other types of adhesive materials such as light-curing adhesive material or moisture-curing adhesive material, which is not limited in the present invention.

Fig. 3 is a schematic top view of the structure shown in Fig. 2A. Please refer to FIG. 1 and FIG. 3, the inner surface 120 a of the flexible carrier film layer 120 of this embodiment has a plurality of first grooves 120 a 1 in the bending section 126. The bending section 126 extends from the second joining section 124 to the first joining section 122 along a first direction D1, each of the first grooves 120a1 extends along a second direction D2 perpendicular to the first direction D1, and these The first grooves 120a1 are sequentially arranged along the first direction D1. With this configuration, the first groove 120a1 can restrict the flow range of the adhesive 140' in the first direction D1, so as to prevent the adhesive 140' from overflowing to the double-sided adhesive 160 and causing the double-sided adhesive 160 to lose its viscosity. It happened. In addition, the first groove 120a1 can guide the glue 140' to flow in the second direction D2, so that the glue 140' is evenly distributed.

Please refer to FIG. 1, furthermore, an end 150a of the film layer 150 faces the bending section 126 of the flexible carrier film layer 120, and is between the first groove 120a1 closest to the film layer 150 and the end 150a of the film layer 150 With spacing. In this way, in addition to the first groove 120a1 having the function of restricting the flow of the glue 140', the end 150a of the film layer 150 also has the function of further restricting the flow of the glue 140'. In addition, the opposite ends of the first groove 120a1 (that is, the left and right ends of the first groove 120a1 shown in FIG. 3) also have the effect of restricting the flow of the glue 140'.

In other embodiments, the extending direction of the first groove 120a1 may not be perpendicular to the first direction D1, which is not limited in the present invention. In addition, in other embodiments, the inner surface 120a of the flexible carrier film 120 may have grooves extending in other directions in the bending section 126, which is illustrated by the following figures.

FIG. 4 shows that the flexible carrier film layer of FIG. 3 is provided with a second groove. The inner surface 120a of the flexible carrier film layer 120 may have a plurality of second grooves 120c in the bending section 126 as shown in FIG. 4, and each of the second grooves 120c extends along the first direction D1. Specifically, the first grooves 120a1 are located between the two edge areas 1201 of the flexible carrier film 120, and the second grooves 120c are respectively located at the two edge areas 1201, so that the second grooves 120c can face the adhesive material 140. The limit of the flow range is to prevent the glue 140' from overflowing from the two edge regions 1201 to the outside of the soft carrier film 120.

FIG. 5 illustrates that the flexible carrier film layer of FIG. 4 is provided with more second grooves. The inner surface 120a of the flexible carrier film layer 120 may have more second grooves 120c', 120c" in the bending section 126 as shown in FIG. 1) extend to the second joining section 124 (marked in Fig. 1), so that the glue 140' is guided by the second grooves 120c' and 120c" to flow to the second joining section 124. The two grooves 120c', for example, extend along the first direction D1 and meet a portion of the first grooves 120a1, and the second grooves 120c", for example, extend along a direction inclined to the first direction D1 and are connected to the second grooves 120c. However, the present invention is not limited to this.

In the case that the extension area of the flexible carrier film layer 120 is large, in order to save the amount of the glue material 140', the glue material 140' can be provided on the soft carrier film layer 120 in a segmented manner. This is an example.

FIG. 6 shows another embodiment of the present invention, the adhesive material is provided on the flexible carrier film layer in a segmented manner. FIG. 7 shows a display device corresponding to the structure shown in FIG. 6. In this embodiment, as shown in FIG. 6, glue materials 1401' and 1402' are provided on the flexible carrier film layer 120 in a segmented manner. After the flexible carrier film 120 is glued on the carrier body 110 by the glues 1401' and 1402', the glue layer 140A cured by the glues 1401' and 1402' includes two glued layers as shown in FIG. The parts 1401, 1402, and the two glue parts 1401, 1402 are respectively located at different positions on the inner surface 120a of the flexible carrier film 120 and separated from each other in the first direction D1.

FIG. 8 shows another embodiment of the present invention, the adhesive material is provided on the flexible carrier film layer in a segmented manner. FIG. 9 shows a display device corresponding to the structure shown in FIG. 8. In this embodiment, as shown in FIG. 8, glue materials 1401', 1402', and 1403' are provided on the flexible carrier film layer 120 in a segmented manner. After the flexible carrier film 120 is glued on the carrier body 110 by glues 1401', 1402', 1403', the glue layer 140B formed by curing the glues 1401', 1402', 1403' is shown in FIG. 9 includes three glued parts 1401, 1402, 1403, the three glued parts 1401, 1402, 1403 are respectively located at different positions on the inner surface 120a of the flexible carrier film 120 and separated from each other in the first direction D1.

As mentioned above, dividing the glue layer into a plurality of glued parts with a distance from each other can provide more flow space for the glue material, so it also has the effect of preventing the glue material from overflowing. In other embodiments, the glue material may include a larger number of glued parts separated from each other, which is not limited in the present invention. In addition, in the foregoing embodiments, the adhesive layer is made of a single material, but the present invention is not limited to this, and the following examples illustrate this with the drawings.

FIG. 10 illustrates another embodiment of the present invention with adhesive materials of different materials on the flexible carrier film layer. Fig. 11 shows that the glue material of Fig. 10 flows and solidifies to form a glue layer. It should be noted that, in order to make the diagram clearer, FIG. 11 does not show the flexible carrier film 120 as being bent and arranged on the carrier body 110 by gluing. However, this is only for illustration. In fact, the flexible carrier film The adhesive layer 140C shown in FIG. 11 is formed only after the 120 is bent and disposed on the carrier body 110 by glueing (in the state of the soft carrier film layer 120 shown in FIG. 1). In this embodiment, as shown in FIG. 10, glue materials 1404' and 1405' of different materials are provided on the flexible carrier film layer 120. After the flexible carrier film 120 is glued on the carrier body 110 by the glues 1404' and 1405', the part of the glue layer 140C formed by curing the glues 1404' and 1405' includes two The glued parts 1404, 1405, and the two glued parts 1404, 1405 are respectively located at different positions on the inner surface 120a of the flexible carrier film 120 and arranged in order along the second direction D2 perpendicular to the second direction D2, and the materials of the two glued parts 1404, 1405 are different.

Furthermore, if the flexible carrier film 120 is routed closer to the inner surface 120a and farther away from the outer surface 120b where the glued portion 1404 is located (as indicated in FIG. 1), the glued portion 1404 can be made of a material with higher hardness. In order to resist the squeezing force of the flexible carrier film 120 from bending and acting on the wires. Conversely, if the flexible carrier film 120 is routed closer to the outer surface 120b (as indicated in FIG. 1) at the glued portion 1404 and farther from the inner surface 120a, the glued portion 1404 can be made of a material with a lower hardness to avoid Due to the excessive rigidity of the glued portion 1404, the flexible carrier film 120 is bent and the tension acting on the wire is too large. Similarly, if the flexible carrier film 120 is routed closer to the inner surface 120a and farther away from the outer surface 120b at the glued portion 1405 (as indicated in FIG. 1), the glued portion 1405 can be made of a material with higher hardness. It resists the squeezing force of the flexible carrier film 120 from bending and acting on the traces. Conversely, if the flexible carrier film 120 is routed closer to the outer surface 120b (as indicated in Figure 1) at the glued portion 1405 and farther from the inner surface 120a, the glued portion 1405 can be made of a material with a lower hardness to avoid Due to the excessive rigidity of the glued portion 1405, the flexible carrier film 120 is bent and the tension acting on the wire is too large.

FIG. 12 illustrates another embodiment of the present invention with adhesive materials of different materials on the flexible carrier film layer. Fig. 13 shows the glue material of Fig. 12 flowing and curing to form a glue layer. The difference between the embodiment shown in FIGS. 12 and 13 and the embodiment shown in FIGS. 10 and 11 is that a larger amount of glue 1405' is arranged in FIG. 12, so that the glues 1404' and 1405' are cured. The glued parts 1404 and 1405 are connected to each other as shown in FIG. 13.

FIG. 14 shows that the film layer of FIG. 3 is additionally provided with a third groove. The embodiment shown in FIG. 14 is different from the embodiment shown in FIG. 3 in that the film layer 150 of FIG. 14 has a plurality of third grooves 150b. The third grooves 150b extend along the second direction D2, and the third grooves 150b are sequentially arranged along the first direction D1. With the provision of the third groove 150b, the flow of the glue 140' at the film layer 150 can be further restricted.

Fig. 15 shows a partial widening of the bending section of Fig. 3. The difference between the embodiment shown in FIG. 15 and the embodiment shown in FIG. 3 is that the bending section 126 of the flexible carrier film 150 of FIG. 15 includes a first subsection 126a and a second subsection 126b. A sub-section 126a is connected between the second joining section 124 (as indicated in FIG. 1) and the second sub-section 126b, and the width of the second sub-section 126b in the second direction D2 is greater than that of the first sub-section The width of 126a along the second direction D2. Thereby, it can be ensured that the glue 140' will not overflow to the outside of the flexible carrier film 120.

The first grooves in the foregoing embodiments are formed by partially removing 30% to 70% of the thickness of the flexible carrier film layer by laser processing, or by forming a dummy ( Dummy) traces, or surface microstructures formed by surface treatment methods such as ultraviolet light irradiation, laser light irradiation, plasma treatment, fluorine coating, etc., are not limited by the present invention. The second groove and the third groove in the foregoing embodiment can also be formed in the same or similar manner.

Please refer to FIG. 1, the carrier body 110 has an end surface 110c and a protruding portion 110d extending from the end surface 110c. The end surface 110c faces the bending section 126 of the flexible carrier film 120 and is not formed by the bending section 126 In a recessed space S, at least a part of the protruding portion 110d is located in the recessed space S, and the glue layer 140 is disposed on the protruding portion 110d in a gluing manner. By adding the protruding portion 110d on the end surface 110c of the supporting body 110, the structural strength of the entire structure at the bending section 126 of the flexible carrier film 120 can be increased. Therefore, the adhesive layer 140 has a proper hardness to provide sufficient structural strength. For example, the Young's coefficient of the adhesive layer of this embodiment is, for example, between 1 MPa and 20 GPa.

FIG. 16 is a partial cross-sectional view of a display device according to another embodiment of the invention. The difference between the embodiment shown in FIG. 16 and the embodiment shown in FIG. 1 is that the supporting body 110 of FIG. 16 does not have a protruding portion 110d on its end surface 110c, and the adhesive layer 140 is disposed on the end surface 110c in a glued manner. Correspondingly, the Young's coefficient of the adhesive layer 140 is, for example, between 1 GPa and 20 GPa and has a relatively high hardness, so as to provide sufficient structural strength at the bending section 126 of the flexible carrier film layer 120. The end surface 110c of this embodiment may be a flat surface or a curved surface as shown in FIG. 16, which is not limited in the present invention.

In any of the foregoing embodiments, the viscosity of the adhesive 140' is, for example, between 3000 cP and 30000 cP to make it easy to handle. The viscosity of the adhesive 140' can also be between 100 cP and 3000 cP, and surface pretreatment such as micro-processing or local ultraviolet light irradiation can be applied to it to make it easy to operate. In addition, if the adhesive material 140' contains a volatile solvent, a plurality of perforations with a pore diameter of, for example, 1-50 microns can be formed in the bending section 126 of the flexible carrier film layer 120 in advance, so that the volatile solvent can pass through the perforations. Escape.

In addition, the required amount of glue 140' can be estimated based on conditions such as the width of the flexible carrier film 120, the distance between the flexible carrier film 120 and the supporting body 110, and the curvature of the bending section 126. For example, the volume of the adhesive layer 140 is, for example, 50% to 70% of the volume of the fillable space between the soft carrier film layer 120 and the supporting body 110. More specifically, the inner surface 120a of the flexible carrier film layer 120 forms a concave arc surface at the bending portion 126. The curvature radius of the concave arc surface is R (marked in FIG. 1), and the radius R can be estimated as shown in FIG. One half of the distance between the first joining section 122 and the second joining section 124. The extension length of the glue layer 140 along the first direction D1 is, for example, greater than or equal to πR/2, so that the glue layer 140 provides sufficient structural strength at the bending portion 126. Moreover, compared with the case where the protrusion 110d is provided as shown in FIG. 1, in the case where the protrusion 110d is not provided as shown in FIG. 16, the amount of glue 140' can be increased to improve the structural strength.

To sum up, in the display device of the present invention, in addition to using double-sided tape to glue the joint section of the soft carrier film layer to the carrier body, the glue layer is also used to connect the bending section of the soft carrier film layer. It is arranged on the carrying body by gluing to firmly fix the whole of the flexible carrier film layer, so as to prevent the joining section from being separated from the carrying body due to the bending stress of the bending section. In addition, the flexible carrier film layer has grooves in the bending section that can limit the flow range of the glue in a specific direction, so it can prevent the glue from overflowing to the double-sided tape and causing the double-sided tape to lose its viscosity. happen. In addition, the film layer on the soft carrier film layer can also have grooves that restrict the flow range of the glue in a specific direction, and the bending section of the soft carrier film layer can be partially widened to further avoid overflow of the glue.

100: display device 110: Carrier body 110c: end face 110d: protrusion 120: soft carrier film 120a: inner surface 120a1: first groove 120b: outer surface 120c, 120c’, 120c": second groove 122: first joint section 122a: protective film layer 124: second joint section 126: Bend section 126a: The first subsection 126b: second subsection 128: display layer 140, 140A, 140B, 174: Adhesive layer 140’, 1401’, 1402’, 1403’, 1404’, 1405’: glue 1401, 1402, 1403, 1404, 1405: glued part 150: Membrane 150a: end 150b: third groove 160: double-sided tape 170: support film 172: support material D1: First direction D2: second direction R: radius of curvature S: sunken space

FIG. 1 is a partial cross-sectional view of a display device according to an embodiment of the invention. 2A and 2B illustrate the process of gluing the flexible carrier film layer of FIG. 1 to the supporting body. Fig. 3 is a schematic top view of the structure shown in Fig. 2A. FIG. 4 shows that the flexible carrier film layer of FIG. 3 is provided with a second groove. FIG. 5 illustrates that the flexible carrier film layer of FIG. 4 is provided with more second grooves. FIG. 6 shows another embodiment of the present invention, the adhesive material is provided on the flexible carrier film layer in a segmented manner. FIG. 7 shows a display device corresponding to the structure shown in FIG. 6. FIG. 8 shows another embodiment of the present invention, the adhesive material is provided on the flexible carrier film layer in a segmented manner. FIG. 9 shows a display device corresponding to the structure shown in FIG. 8. FIG. 10 illustrates another embodiment of the present invention with adhesive materials of different materials on the flexible carrier film layer. Fig. 11 shows that the glue material of Fig. 10 flows and solidifies to form a glue layer. FIG. 12 illustrates another embodiment of the present invention with adhesive materials of different materials on the flexible carrier film layer. Fig. 13 shows the glue material of Fig. 12 flowing and curing to form a glue layer. FIG. 14 shows that the film layer of FIG. 3 is additionally provided with a third groove. Fig. 15 shows a partial widening of the bending section of Fig. 3. FIG. 16 is a partial cross-sectional view of a display device according to another embodiment of the invention.

100: display device

110: Carrier body

110c: end face

110d: protrusion

120: soft carrier film

120a: inner surface

120a1: first groove

120b: outer surface

122: first joint section

122a: protective film layer

124: second joint section

126: Bend section

128: display layer

140, 174: Adhesive layer

150: Membrane

150a: end

160: double-sided tape

170: support film

172: support material

D1: First direction

R: radius of curvature

S: sunken space

Claims (18)

A display device includes: a supporting body; a flexible carrier film layer, including a first joining section, a second joining section, and a bending section, wherein the first joining section and the second joining section The segments are respectively arranged on opposite sides of the carrying body, the bending section is connected between the first joining section and the second joining section, and the flexible carrier film layer has an inner surface and an outer surface opposite to each other , The inner surface has at least one first groove in the bending section, the flexible carrier film layer has a display layer, and at least part of the display layer is connected to the outer surface in the second joining section; a double-sided tape , Arranged between the first joining section and the carrying body; and a glue layer, arranged in the bending section between the inner surface and the carrying body, wherein the carrying body has an end face, the end face facing The bending section is not located in a recessed space formed by the bending section, and at least part of the adhesive layer is located between the end surface and the bending section. The display device according to claim 1, wherein the bending section extends from the second joining section to the first joining section along a first direction, and the at least one first groove extends along a second direction , The second direction is perpendicular to the first direction. The display device according to claim 2, wherein the number of the at least one first groove is multiple, and the first grooves are sequentially arranged along the first direction. The display device according to claim 2, wherein the inner surface has at least one second groove in the bending section, and the at least one second groove extends along the first direction. The display device according to claim 4, wherein the flexible carrier film layer has two edge areas, the at least one first groove is located between the two edge areas, and the at least one second groove is located at at least one of the edge areas. The display device according to claim 2, wherein the inner surface has at least one second groove in the bending section, and the at least one second groove extends from the bending section to the second joining section. The display device according to claim 1, wherein the glue layer includes at least two glued parts, and the at least two glued parts are respectively located at different positions on the inner surface and separated from each other. The display device according to claim 7, wherein the bending section extends from the second joint section to the first joint section along a first direction, and the at least two glued parts are separated from each other in the first direction . The display device according to claim 1, wherein the glue layer includes at least two glue parts, the at least two glue parts are respectively located at different positions on the inner surface, and the materials of the at least two glue parts are different. The display device according to claim 1, further comprising a film layer, wherein the film layer is disposed in the first joining section, the double-sided tape is disposed on the film layer, and an end of the film layer faces the bending area Section, there is a distance between the at least one first groove and the end of the film layer. The display device according to claim 1, further comprising a film layer, wherein the film layer is disposed in the first joining section, the double-sided tape is disposed on the film layer, and the film layer has at least one third groove. The display device according to claim 11, wherein the bending section extends from the second joining section to the first joining section in a first direction, and the at least one third groove extends in a second direction , The second direction is perpendicular to the first direction. The display device according to claim 1, wherein the bending section extends from the second joining section to the first joining section along a first direction, and the bending section includes a first subsection and A second subsection, the first subsection is connected between the second joining section and the second subsection, and the second subsection extends along a second direction perpendicular to the first direction The width is greater than the width of the first sub-section along the second direction. The display device according to claim 1, wherein the adhesive layer is disposed on the end surface. The display device according to claim 14, wherein the volume of the adhesive layer is 50% to 70% of the volume of the fillable space between the flexible carrier film layer and the supporting body. The display device according to claim 1, wherein the supporting body has a protruding portion extending from the end surface, at least part of the protruding portion is located in the recessed space, and the adhesive layer is disposed on the protruding portion. The display device according to claim 16, wherein the bending section extends from the second joint section to the first joint section in a first direction, and the inner surface The surface forms a concave arc surface at the bending portion, the curvature radius of the concave arc surface is R, and the extension length of the adhesive layer along the first direction is greater than or equal to πR/2. The display device according to claim 1, wherein the flexible carrier film layer has at least one perforation in the bending section.

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