WO2019090867A1 - 可折叠显示设备及可折叠显示设备的制作方法 - Google Patents

可折叠显示设备及可折叠显示设备的制作方法 Download PDF

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Publication number
WO2019090867A1
WO2019090867A1 PCT/CN2017/114019 CN2017114019W WO2019090867A1 WO 2019090867 A1 WO2019090867 A1 WO 2019090867A1 CN 2017114019 W CN2017114019 W CN 2017114019W WO 2019090867 A1 WO2019090867 A1 WO 2019090867A1
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WIPO (PCT)
Prior art keywords
substrate
display device
foldable display
adhesive layer
optical adhesive
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Application number
PCT/CN2017/114019
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English (en)
French (fr)
Inventor
李波
Original Assignee
武汉华星光电半导体显示技术有限公司
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Application filed by 武汉华星光电半导体显示技术有限公司 filed Critical 武汉华星光电半导体显示技术有限公司
Priority to US15/744,784 priority Critical patent/US10777776B2/en
Publication of WO2019090867A1 publication Critical patent/WO2019090867A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements

Definitions

  • the present application relates to the field of display technologies, and in particular, to a foldable display device and a method of fabricating the foldable display device.
  • OCA Optically Clear Adhesive
  • the main solution at present is to reduce the thickness of the optical adhesive as much as possible, but the thin optical adhesive cannot effectively fill the thickness difference between different laminates. The risk of creating bubbles.
  • the technical problem to be solved by the present application is to provide a foldable display device and a method for manufacturing the foldable display device, which solve the problem of long recovery time after folding and unfolding of the optical glue of the foldable display device in the prior art.
  • a foldable display device including:
  • the first optical adhesive layer is provided with a pair of transparent retaining walls, the transparent retaining wall separating the first optical adhesive layer into a first portion and a second portion a portion, the first portion is located between a pair of the transparent retaining walls, the second portion is located outside the pair of the transparent retaining walls, and the thickness of the first portion is smaller than the thickness of the second portion, A portion of the vertical projection of the first substrate forms a first region, and when the foldable display device is in a folded state, the first region is bent.
  • a pair of the transparent retaining walls are disposed in the same direction.
  • a pair of the transparent retaining walls are vertically disposed on the first substrate.
  • the first region is provided with a center line between the two second portions, and a pair of the transparent retaining walls are symmetrically distributed on both sides of the center line.
  • the foldable display device further includes a second substrate, the second substrate is located on a side of the first optical adhesive layer facing away from the first substrate, and the second substrate passes the An optical adhesive layer is attached to the first substrate.
  • the foldable display device further includes a cover plate, the cover plate is located on a side of the second substrate facing away from the first substrate, and between the cover plate and the second substrate A second optical adhesive layer is disposed, and the cover plate is adhered to the second substrate through the second optical adhesive layer.
  • the foldable display device further includes a second substrate and a polarizer, the second substrate is located between the first substrate and the first optical adhesive layer, and the polarizer is located at the The first optical adhesive layer faces away from the side of the second substrate, and the polarizer is attached to the second substrate through the first optical adhesive layer.
  • the foldable display device further includes a cover plate, the cover plate is located on a side of the polarizer facing away from the second substrate, and the cover plate is further disposed between the cover plate and the second substrate There is a third optical adhesive layer, and the cover plate is adhered to the second substrate through the third optical adhesive layer.
  • the first region is provided with a center line between the two second portions, and a pair of the transparent retaining walls are symmetrically distributed on both sides of the center line.
  • the foldable display device further includes a second substrate, the second substrate is located on a side of the first optical adhesive layer facing away from the first substrate, and the second substrate passes the One light The adhesive layer is attached to the first substrate.
  • the foldable display device further includes a cover plate, the cover plate is located on a side of the second substrate facing away from the first substrate, and between the cover plate and the second substrate A second optical adhesive layer is disposed, and the cover plate is adhered to the second substrate through the second optical adhesive layer.
  • the foldable display device further includes a second substrate and a polarizer, the second substrate is located between the first substrate and the first optical adhesive layer, and the polarizer is located at the The first optical adhesive layer faces away from the side of the second substrate, and the polarizer is attached to the second substrate through the first optical adhesive layer.
  • the foldable display device further includes a cover plate, the cover plate is located on a side of the polarizer facing away from the second substrate, and the cover plate is further disposed between the cover plate and the second substrate There is a third optical adhesive layer, and the cover plate is adhered to the second substrate through the third optical adhesive layer.
  • the application also provides a method for manufacturing a foldable display device, comprising:
  • the transparent retaining wall separating the optical adhesive layer into a first portion and a second portion, the first portion being located between a pair of the transparent retaining walls
  • the second portion is located outside the pair of the transparent retaining walls, the thickness of the first portion is smaller than the thickness of the second portion, and the vertical projection of the first portion on the first substrate forms a first region.
  • the second substrate is attached to the first substrate through the optical adhesive layer.
  • the liquid optical glue is sprayed onto the first substrate by inkjet printing.
  • a pair of the transparent retaining walls are disposed in the same direction.
  • a pair of the transparent retaining walls are vertically disposed on the first substrate.
  • the first region is provided with a center line between the two second portions, and a pair of the transparent retaining walls are symmetrically distributed on both sides of the center line.
  • the foldable display device further includes a second substrate, the second substrate is located on a side of the first optical adhesive layer facing away from the first substrate, and the second substrate passes the An optical adhesive layer is attached to the first substrate.
  • the foldable display device further includes a cover plate, wherein the cover plate is located at the first a second optical adhesive layer is disposed between the cover plate and the second substrate, and the cover plate is pasted by the second optical adhesive layer on the side of the first substrate On the second substrate.
  • the first area corresponds to the area where the foldable display device is deformed by the folding when the switching between the unfolded state and the folded state
  • the first portion of the first optical adhesive layer corresponds to the first of the foldable display device
  • the thickness of the first portion is small, and the stress concentration of the first portion when switching between the unfolded state and the folded state is avoided, the first portion is quickly recovered after deformation, and the folding requirement of the foldable display device is satisfied
  • the second portion is subjected to folding deformation. The influence is small, the thickness of the second part is large, the bonding requirement between the devices is satisfied, the bonding is firm, and bubbles are avoided, thereby facilitating the structure realization of the foldable display device.
  • FIG. 1 is a schematic structural diagram of a foldable display device according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic top plan view of a foldable display device according to Embodiment 1 of the present application.
  • FIG. 3 is a schematic diagram of a folded state of a foldable display device according to Embodiment 1 of the present application.
  • FIG. 4 is a schematic structural diagram of a foldable display device according to Embodiment 2 of the present application.
  • FIG. 5 is a schematic structural diagram of a foldable display device according to Embodiment 3 of the present application.
  • FIG. 6 is a schematic structural diagram of a foldable display device according to Embodiment 4 of the present application.
  • FIG. 7 is a schematic diagram of step S101 of a method for fabricating a foldable display device according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of step S102 of a method for fabricating a foldable display device according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of step S103 of the method for fabricating the foldable display device according to the embodiment of the present application.
  • the foldable display device 100 provided in the first embodiment of the present invention can be folded. Specifically, to FIG. 3 , the foldable display device 100 is folded in half at a position corresponding to the first region 320 , and the foldable display device 100 is folded. A fold is formed in the centerline 60 of the first region 320 after folding.
  • the first substrate is a touch panel 20, and the second substrate is a polarizer.
  • the first substrate is a touch panel 20, and the second substrate is a polarizer.
  • the display panel 10 is an active-matrix organic light emitting diode (AMOLED) display panel 10, and the AMOLED display panel 10 displays high image clarity and can be adapted to be flexible or The display device 100 is folded. In other embodiments, the display panel 10 can also be other foldable display panels 10.
  • the touch panel 20 is configured to implement a touch function.
  • the touch panel 20 can be a capacitive touch panel 20 formed of one or two conductive layers.
  • the touch panel 20 also has a foldable feature.
  • the touch panel 20 is located on the display surface of the display panel 10 . In one embodiment, the touch surface is pasted on the display surface of the display panel 10 , or the touch panel 20 is embedded in the display panel 10 .
  • the first optical adhesive layer 30 is used to attach the touch panel 20 and the polarizer 40. Specifically, the first optical adhesive layer 30 is located on the side of the touch panel 20 facing away from the display panel 10, that is, the touch panel 20 Touch surface.
  • the first optical adhesive layer 30 is provided with a pair of transparent retaining walls 300. In conjunction with FIG. 1 and FIG. 2, in the present embodiment, the transparent retaining wall 300 divides the first optical adhesive layer 30 into a first portion 32 and a second portion 34, the first portion. 32.
  • the vertical projection of the display panel 10 forms the first region 320, and when the foldable display device 100 is in the folded state, the first region 320 is bent.
  • the center line 60 of the first region 320 is located between the pair of transparent retaining walls 300 and between the two second portions 34. Further, the area formed between the pair of transparent retaining walls 300 covers at least the In a region 320, when the thickness of the foldable display device 100 is uniform, the first region 320 is symmetrically distributed with the center line 60 as a center line, a pair of transparent retaining walls 300 are symmetrically disposed on both sides of the center line 60, and a pair of transparent retaining walls 300 are centered. 60 is a symmetric distribution of the midline.
  • the transparent retaining wall 300 is made of a non-conductive solid transparent material.
  • the transparent retaining wall 300 does not affect the display of the display panel 10, and the insulated retaining wall does not affect the touch function of the touch panel 20.
  • the transparent retaining wall 300 passes The ink jet printing method is formed, and the thickness of the transparent retaining wall 300 is 3 to 20 ⁇ m.
  • the first portion 32 is located between the pair of transparent retaining walls 300, i.e., the first portion 32 covers at least the first region 320.
  • the second portion 34 is located outside of the pair of transparent retaining walls 300. Specifically, the second portion 34 is located at the edge of the transparent retaining wall 300 to the foldable display device 100. In this embodiment, the thickness of the first portion 32 is smaller than the thickness of the second portion 34.
  • the thickness of the first optical adhesive layer 30 corresponding to the first region 320 is smaller than the thickness of the first optical adhesive layer 30 other than the first region 320.
  • the first optical adhesive layer 30 is deformed in the first region 320.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first region 320
  • the second portion 34 corresponds to a region other than the first region 320.
  • the thickness of the first portion 32 is smaller than the thickness of the second portion 34, and the thickness of the first portion 32 is small and the deformation is restored.
  • the second portion 34 has a large thickness and a strong adhesiveness, and the second portion 34 is less affected by folding and deformation, and maintains sufficient viscosity to make the polarizer 40 and the touch panel 20 firm. connection.
  • the polarizer 40 is attached to the touch panel 20 through the first optical adhesive layer 30.
  • the polarizer 40 is used to filter ambient light that is incident on the display panel 10 to prevent ambient light from being irradiated onto the display panel 10. The reflection, the reflected light, and the light emitted by the display panel 10 affect the image actually displayed by the display panel 10.
  • the polarizer 40 is a circular polarizer 40.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first of the foldable display device 100.
  • the position of the region 320 is small, the thickness of the first portion 32 is small, and the stress concentration of the first portion 32 during the switching between the unfolded state and the folded state is avoided, and the first portion 32 is deformed quickly after the deformation, and the folding requirement of the foldable display device 100 is satisfied;
  • the two portions 34 are less affected by the folding deformation, and the second portion 34 has a large thickness, which satisfies the bonding requirements between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.
  • the pair of transparent retaining walls 300 are disposed in the same direction.
  • the folding influence area on both sides of the fold is symmetric, and the pair of transparent retaining walls 300 are parallel.
  • the distance between the two transparent retaining walls 300 is the same or symmetrical from the crease, and the first portion 32 has the same coverage area of the folding affected area on both sides of the crease, in other words, the half first portion 32 corresponds to cover half of the folding affected area (the first area) 320), making the bending effect of the foldable display device 100 symmetrical.
  • the pair of transparent retaining walls 300 are disposed in a direction that is equal to the centerline 60 (corresponding to the crease) of the first region 320.
  • the formation direction is the same.
  • the direction in which the transparent retaining wall 300 is disposed is the same as the direction in which the center line 60 is formed. It can be understood that the direction in which the transparent retaining wall 300 is placed is parallel to the edge of the first region 320, and the first region 320 is covered between the pair of transparent retaining walls 300. The distance between the wall 300 and the edge of the first region 320 is uniform.
  • the transparent retaining wall 300 is disposed in the same direction as the centerline 60. The transparent retaining wall 300 is parallel to the centerline 60 of the foldable display device 100.
  • the transparent retaining wall 300 does not affect the folding of the first region 320, thereby improving the folding effect.
  • a pair of transparent retaining walls 300 are symmetrically distributed on both sides of the center line 60.
  • the first portion 32 of the first optical adhesive layer 30 covering the creases (the center line 60) is the same.
  • the first optical adhesive layer 30 receives the deformation symmetry of the fold, which is favorable for the deformation recovery of the first optical adhesive layer 30.
  • the foldable display device 100 further includes a cover 50 disposed on a side of the polarizer 40 facing away from the touch panel 20 , and the cover 50 is pasted to the polarizer 40 by the optical adhesive 42 .
  • the upper portion is used to protect the polarizer 40, the touch panel 20, and the like.
  • the cover 50 is a flexible transparent cover 50, such as plastic or the like, and the cover 50 has a flexible foldable feature.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first region of the foldable display device 100 when the foldable display device 100 performs the switching between the unfolded state and the folded state during the switching between the unfolded state and the folded state.
  • the thickness of the first portion 32 is small, and the stress concentration of the first portion 32 during the switching between the unfolded state and the folded state is avoided, and the first portion 32 is deformed and deformed quickly to meet the folding requirement of the foldable display device 100;
  • the portion 34 is less affected by the folding deformation, and the second portion 34 has a large thickness, which satisfies the bonding requirement between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.
  • the foldable display device 100 provided in the second embodiment of the present invention is different from the first embodiment in that a second optical adhesive layer 302 is further disposed between the cover 50 and the polarizer 40, and the cover 50 passes through the second The optical adhesive layer 302 is attached to the polarizer 40.
  • the first optical adhesive layer 30 is the same as the second optical adhesive layer 302.
  • the second optical adhesive layer 302 is also separated into a first portion 32 and a second portion 34 by a pair of transparent retaining walls 300, wherein the first portion 32 The thickness is less than the thickness of the second portion 34.
  • the first portion 32 between the cover 50 and the polarizer 40 corresponds to the first portion 32 between the touch panel 20 and the polarizer 40.
  • the first portion 320 corresponds to the region where the foldable display device 100 is deformed by the folding when the foldable display device 100 performs the switching between the unfolded state and the folded state
  • the first portion 32 of the second optical adhesive layer 302 corresponds to the foldable display device.
  • the first region 320 of 100 is located, the thickness of the first portion 32 is small, avoiding When the first portion 32 is switched between the unfolded state and the folded state, the compressive stress concentrates, and the first portion 32 recovers quickly after deformation, which satisfies the folding requirement of the foldable display device 100; the second portion 34 is less affected by the folding deformation, and the second portion
  • the portion 34 has a large thickness, satisfies the bonding requirements between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.
  • the foldable display device 100 provided in the third embodiment of the present invention includes a display panel 10 , a first optical adhesive layer 30 , and a touch panel 20 .
  • the first substrate is the display panel 10
  • the second substrate is the touch panel 20.
  • the first optical adhesive layer 30 is disposed on the display panel 10.
  • the first optical adhesive layer 30 is provided with a pair of transparent retaining walls 300.
  • the transparent optical barrier 300 divides the first optical adhesive layer 30 into the first portion. 32 and the second portion 34, the first portion 32 forms a first region 320 on the vertical projection of the display panel 10, and the first region 320 is in a folded shape when the foldable display device 100 is in the folded state.
  • the center line 60 of the first area 320 is located between the pair of transparent retaining walls 300. Further, the area formed between the pair of transparent retaining walls 300 covers at least the first area 320.
  • the first region 320 is symmetrically distributed with the center line 60, and a pair of transparent retaining walls 300 are symmetrically disposed on both sides of the center line 60. In other words, the pair of transparent retaining walls 300 are symmetrically distributed with the center line 60 as a center line.
  • the transparent retaining wall 300 is made of a non-conductive solid transparent material. The transparent retaining wall 300 does not affect the display of the display panel 10, and the insulated retaining wall does not affect the touch function of the touch panel 20.
  • the transparent retaining wall 300 is formed by inkjet printing, and the thickness of the transparent retaining wall 300 is 3-20 ⁇ m.
  • the first portion 32 is located between the pair of transparent retaining walls 300, i.e., the first portion 32 covers at least the first region 320.
  • the second portion 34 is located outside of the pair of transparent retaining walls 300. Specifically, the second portion 34 is located at the edge of the transparent retaining wall 300 to the foldable display device 100.
  • the thickness of the first portion 32 is smaller than the thickness of the second portion 34.
  • the thickness of the first optical adhesive layer 30 corresponding to the first region 320 is smaller than the thickness of the first optical adhesive layer 30 other than the first region 320.
  • the first optical adhesive layer 30 When the foldable display device 100 is folded, the first optical adhesive layer 30 is deformed in the first region 320.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first region 320
  • the second portion 34 corresponds to a region other than the first region 320.
  • the thickness of the first portion 32 is smaller than the thickness of the second portion 34, and the thickness of the first portion 32 is small and the deformation is restored. Fast enough to meet the folding requirements of the foldable display device 100.
  • the second portion 34 has a large thickness and a strong adhesiveness, and the second portion 34 is less affected by folding and deformation, and maintains sufficient viscosity to make the polarizer 40 and the touch panel 20 firm. connection.
  • the touch panel 20 is located on the display surface side of the display panel 10, and the touch panel 20 is attached to the display surface through the first optical adhesive layer 30. On the board 10.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first of the foldable display device 100.
  • the position of the region 320 is small, the thickness of the first portion 32 is small, and the stress concentration of the first portion 32 during the switching between the unfolded state and the folded state is avoided, and the first portion 32 is deformed quickly after the deformation, and the folding requirement of the foldable display device 100 is satisfied;
  • the two portions 34 are less affected by the folding deformation, and the second portion 34 has a large thickness, which satisfies the bonding requirements between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.
  • the direction in which the transparent retaining wall 300 is disposed is the same as the direction in which the center line 60 is formed.
  • the foldable display device 100 is folded in half along the center line 60.
  • the direction in which the transparent retaining wall 300 is disposed is the same as the direction in which the center line 60 is formed. It can be understood that the direction in which the transparent retaining wall 300 is placed is parallel to the edge of the first region 320.
  • the first region 320 is covered between the pair of transparent retaining walls 300 such that the first portion 32 of the first optical adhesive layer 30 completely covers the first region 320, and the distance between the transparent retaining wall 300 and the edge of the first region 320 is uniform.
  • the transparent retaining wall 300 is disposed in the same direction as the centerline 60.
  • the transparent retaining wall 300 is parallel to the centerline 60 of the foldable display device 100.
  • the transparent retaining wall 300 does not affect the folding of the first region 320, thereby improving the folding effect. .
  • the foldable display device 100 further includes a cover 50 disposed on a side of the touch panel 20 facing away from the display panel 10 , and the cover 50 is pasted to the touch panel by the optical adhesive 42 .
  • 20 is used to protect the touch panel 20, the display panel 10, and the like.
  • the cover 50 is a flexible transparent cover 50, such as plastic or the like, and the cover 50 has a flexible foldable feature.
  • the foldable display device 100 provided in the fourth embodiment of the present invention is different from the first embodiment in that a third optical adhesive layer 304 is further disposed between the cover 50 and the touch panel 20 , and the cover 50 passes through the first
  • the three optical adhesive layer 304 is attached to the touch panel 20 .
  • the first optical adhesive layer 30 is the same as the third optical adhesive layer 304.
  • the third optical adhesive layer 304 between the cover 50 and the touch panel 20 is also separated into the first portion 32 by a pair of transparent retaining walls 300.
  • the second portion 34 wherein the thickness of the first portion 32 is less than the thickness of the second portion 34.
  • the first portion 32 between the cover 50 and the touch panel 20 corresponds to the first portion 32 between the touch panel 20 and the display panel 10.
  • the first region 320 is located in a region where the foldable display device 100 is deformed by the folding when the switching between the unfolded state and the folded state
  • the first portion 32 of the third optical adhesive layer 304 corresponds to the foldable display device 100.
  • the first area of 320 bits The thickness of the first portion 32 is small, and the stress concentration of the first portion 32 during the switching between the unfolded state and the folded state is avoided, and the first portion 32 recovers quickly after deformation, which satisfies the folding requirement of the foldable display device 100; 34 is less affected by the folding deformation, and the second portion 34 has a large thickness, which satisfies the bonding requirement between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.
  • an embodiment of the present application further provides a method for fabricating the foldable display device 100.
  • the specific steps include:
  • the first substrate 12 is provided, and a pair of transparent retaining walls 300 are formed on the first substrate 12.
  • the first substrate 12 can be a display panel 10 , a touch panel 20 , a polarizer 40 , etc .
  • the transparent barrier 300 is made of a non-conductive solid transparent material.
  • the transparent retaining wall 300 does not affect the display of the display panel 10, and the insulated retaining wall does not affect the touch function of the touch panel 20.
  • the transparent retaining wall 300 is formed by inkjet printing, and the thickness of the transparent retaining wall 300 is 3-20 ⁇ m.
  • a pair of transparent retaining walls 300 are vertically disposed on the first substrate 12.
  • the first area 320 of the foldable display device 100 is located between the pair of transparent retaining walls 300. Further, the area formed between the pair of transparent retaining walls 300 covers at least the first area 320.
  • the first regions 320 are symmetrically distributed with the center line 60, and a pair of transparent retaining walls 300 are symmetrically disposed on both sides of the center line 60.
  • the transparent retaining wall 300 is made of a non-conductive solid transparent material. The transparent retaining wall 300 does not affect the display of the display panel 10, and the insulated retaining wall does not affect the touch function of the touch panel 20.
  • the transparent retaining wall 300 divides the first optical adhesive layer 30 into a first portion 32 and a second portion 34.
  • the first portion 32 is located between the pair of transparent retaining walls 300, that is, the first portion 32 covers at least the first region 320.
  • the second portion 34 is located outside of the pair of transparent retaining walls 300. Specifically, the second portion 34 is located at the edge of the transparent retaining wall 300 to the foldable display device 100.
  • the thickness of the first portion 32 is smaller than the thickness of the second portion 34, in other words, corresponding to the first portion of the first region 320.
  • the thickness of the optical adhesive layer 30 is smaller than the thickness of the first optical adhesive layer 30 other than the first region 320.
  • the first optical adhesive layer 30 When the foldable display device 100 is folded, the first optical adhesive layer 30 is deformed in the first region 320.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first region 320
  • the second portion 34 corresponds to a region other than the first region 320.
  • the thickness of the first portion 32 is smaller than the thickness of the second portion 34, and the thickness of the first portion 32 is small and the deformation is restored. Fast enough to meet the folding requirements of the foldable display device 100.
  • the second portion 34 has a large thickness and a strong adhesiveness, and the second portion 34 is less affected by folding and deformation, and maintains sufficient viscosity to make the polarizer 40 and the touch panel 20 firm. connection.
  • the liquid optical glue is sprayed onto the first substrate 12 by inkjet printing.
  • the spraying is simple and easy, and the spraying position is high.
  • the second substrate 14 is bonded to the first substrate 12 through the first optical adhesive layer 30.
  • the second substrate 14 can be the touch panel 20 , the polarizer 40 , the cover 50 , and the like.
  • the first portion 32 of the first optical adhesive layer 30 corresponds to the first of the foldable display device 100.
  • the position of the region 320 is small, the thickness of the first portion 32 is small, and the stress concentration of the first portion 32 during the switching between the unfolded state and the folded state is avoided, and the first portion 32 is deformed quickly after the deformation, and the folding requirement of the foldable display device 100 is satisfied;
  • the two portions 34 are less affected by the folding deformation, and the second portion 34 has a large thickness, which satisfies the bonding requirements between the devices, and is firmly bonded to avoid generation of air bubbles, thereby facilitating the structural realization of the foldable display device 100.

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Abstract

一种可折叠显示设备(100) 及其制作方法。可折叠显示设备(100)包括：第一基板(12)；第一光学胶层(30)，位于第一基板(12)的一侧，第一光学胶层(30)设有一对透明挡墙(300)，透明挡墙(300)将第一光学胶层(30)分隔为第一部分(32)和第二部分(34)，第一部分(32)位于一对透明挡墙(300)之间，第二部分(34)位于一对透明挡墙(300)外，第一部分(32)的厚度小于第二部分(34)的厚度，第一部分(32)在第一基板(12)的垂直投影形成第一区域(320)，可折叠显示设备(100)处于折叠状态时，第一区域(320)为弯折状。第一部分(32)的厚度小，变形后回复快，满足可折叠显示设备(100)的折叠要求；第二部分(34)厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡。

Description

可折叠显示设备及可折叠显示设备的制作方法
本申请要求于2017年11月10日提交中国专利局、申请号为201711104667.6、申请名称为“可折叠显示设备及可折叠显示设备的制作方法”的中国专利申请的优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本申请涉及显示技术领域，尤其是涉及一种可折叠显示设备及可折叠显示设备的制作方法。
背景技术
近年来，有机发光二极管(Organic Light-Emitting Diode，OLED)显示技术的快速发展推动曲面和柔性显示触控产品迅速进入市场，各大面板厂商纷纷投入巨资布局柔性显示触控项目。触控显示模组的不同层别之间是通过光学胶(Optically Clear Adhesive，OCA)进行贴合固定的，但是由于光学胶是一种易发生形变的胶材，对于可折叠显示设备来说，产品需要经常折叠与展开，在产品从平直状态转为折叠状态时，光学胶会受到挤压而发生形变；产品从折叠状态展开变成平直状态时，光学胶又会从原来的挤压状态变为拉伸状态，但是光学胶的恢复至少需要几个小时的时间才能大致恢复到折叠前的状态，不能满足可折叠显示器的使用要求。
由于光学胶厚度越大，挤压变形的恢复过程就越长，目前主要的解决办法就是尽量减薄光学胶的厚度，但是较薄的光学胶无法有效填充不同叠层之间的厚度差，存在产生气泡的风险。
申请内容
本申请要解决的技术问题是提供一种可折叠显示设备及可折叠显示设备的制作方法，用以解决现有技术中可折叠显示设备的光学胶折叠和展开形变后恢复时间长的问题。
为解决上述技术问题，本申请提供一种可折叠显示设备，包括：
第一基板；
第一光学胶层，位于所述第一基板的一侧，所述第一光学胶层设有一对透明挡墙，所述透明挡墙将所述第一光学胶层分隔为第一部分和第二部分，所述第一部分位于一对所述透明挡墙之间，所述第二部分位于一对所述透明挡墙外，所述第一部分的厚度小于所述第二部分的厚度，所述第一部分在所述第一基板的垂直投影形成第一区域，所述可折叠显示设备处于折叠状态时，所述第一区域为弯折状。
一种实施方式中，一对所述透明挡墙的设置方向相同。
一种实施方式中，一对所述透明挡墙垂直设置在所述第一基板上。
一种实施方式中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
一种实施方式中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光学胶层贴合于所述第一基板上。
一种实施方式中，所述可折叠显示设备还包括盖板，所述盖板位于所述第二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
一种实施方式中，所述可折叠显示设备还包括第二基板和偏光片，所述第二基板位于所述第一基板与所述第一光学胶层之间，所述偏光片位于所述第一光学胶层背离所述第二基板的一侧，所述偏光片通过所述第一光学胶层贴合于所述第二基板上。
一种实施方式中，所述可折叠显示设备还包括盖板，所述盖板位于所述偏光片背离所述第二基板的一侧，所述盖板与所述第二基板之间还设有第三光学胶层，所述盖板通过所述第三光学胶层粘贴于所述第二基板上。
一种实施方式中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
一种实施方式中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光 学胶层贴合于所述第一基板上。
一种实施方式中，所述可折叠显示设备还包括盖板，所述盖板位于所述第二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
一种实施方式中，所述可折叠显示设备还包括第二基板和偏光片，所述第二基板位于所述第一基板与所述第一光学胶层之间，所述偏光片位于所述第一光学胶层背离所述第二基板的一侧，所述偏光片通过所述第一光学胶层贴合于所述第二基板上。
一种实施方式中，所述可折叠显示设备还包括盖板，所述盖板位于所述偏光片背离所述第二基板的一侧，所述盖板与所述第二基板之间还设有第三光学胶层，所述盖板通过所述第三光学胶层粘贴于所述第二基板上。
本申请还提供一种可折叠显示设备的制作方法，包括：
提供第一基板，在所述第一基板上制作一对透明挡墙；
喷涂液态光学胶于所述基板上形成所述光学胶层，所述透明挡墙将所述光学胶层分隔为第一部分和第二部分，所述第一部分位于一对所述透明挡墙之间，所述第二部分位于一对所述透明挡墙外，所述第一部分的厚度小于所述第二部分的厚度，所述第一部分在所述第一基板的垂直投影形成第一区域，所述可折叠显示设备处于折叠状态时，所述第一区域为弯折状；
将第二基板通过所述光学胶层贴合于所述第一基板上。
一种实施方式中，所述液态光学胶通过喷墨打印的方式喷涂于所述第一基板上。
一种实施方式中，一对所述透明挡墙的设置方向相同。
一种实施方式中，一对所述透明挡墙垂直设置在所述第一基板上。
一种实施方式中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
一种实施方式中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光学胶层贴合于所述第一基板上。
一种实施方式中，所述可折叠显示设备还包括盖板，所述盖板位于所述第 二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
本申请的有益效果如下：第一区域对应可折叠显示设备进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第一光学胶层的第一部分对应可折叠显示设备的第一区域，第一部分的厚度小，避免了第一部分在展开状态与折叠状态之间的切换时压应力集中，第一部分变形后回复快，满足可折叠显示设备的折叠要求；第二部分受到折叠变形的影响小，第二部分厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备的结构实现。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请实施例一提供的可折叠显示设备的结构示意图。
图2为本申请实施例一提供的可折叠显示设备的俯视结构示意图。
图3为本申请实施例一提供的可折叠显示设备的折叠状态示意图。
图4为本申请实施例二提供的可折叠显示设备的结构示意图。
图5为本申请实施例三提供的可折叠显示设备的结构示意图。
图6为本申请实施例四提供的可折叠显示设备的结构示意图。
图7为本申请实施例提供的可折叠显示设备的制作方法的步骤S101的示意图。
图8为本申请实施例提供的可折叠显示设备的制作方法的步骤S102的示意图。
图9为本申请实施例提供的可折叠显示设备的制作方法的步骤S103的示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
请参阅图1、图2及图3，本申请实施例一提供的可折叠显示设备100可以折叠，具体到图3，可折叠显示设备100在对应第一区域320位置对折，可折叠显示设备100折叠后在第一区域320的中线60形成折痕。
具体到图1，可折叠显示设备100包括第一基板、第二基板、第一光学胶层30及偏光片40，本实施例中，第一基板为触控面板20，第二基板为偏光片40。一种实施方式中，显示面板10为有源矩阵有机发光二极体(Active-matrix organic light emitting diode，AMOLED)显示面板10，AMOLED显示面板10显示图像清晰度高，且可以适用于柔性或可折叠显示设备100。其他实施方式中，显示面板10也可以为其他可折叠的显示面板10。触控面板20用于实现触控的功能，本实施例中，触控面板20可以为一层或两层导电层形成的电容式触控面板20，触控面板20也具有可折叠的特点。触控面板20位于显示面板10的显示面一侧，一种实施方式中，触控面粘贴于显示面板10的显示面上，或触控面板20内嵌于显示面板10上。
本实施例中，第一光学胶层30用于粘贴触控面板20与偏光片40，具体的，第一光学胶层30位于触控面板20背离显示面板10的一侧，即触控面板20的触控面。第一光学胶层30设有一对透明挡墙300，结合图1和图2，本实施例中，透明挡墙300将第一光学胶层30分隔为第一部分32和第二部分34，第一部分32在显示面板10的垂直投影形成第一区域320，可折叠显示设备100处于折叠状态时，第一区域320为弯折状。结合图2，第一区域320的中线60位置位于一对透明挡墙300之间，且位于两个第二部分34之间，进一步的，一对透明挡墙300之间形成的区域至少覆盖第一区域320，当可折叠显示设备100的厚度均匀时，第一区域320以中线60为中线对称分布，一对透明挡墙300对称设置于中线60的两侧，一对透明挡墙300以中线60为中线对称分布。一种实施方式中，透明挡墙300为非导电的固态透明材料制成，透明挡墙300不影响显示面板10的显示，绝缘的挡墙也不影响触控面板20的触控功能。一种实施方式中，透明挡墙300通过 喷墨打印的方式形成，透明挡墙300的厚度为3～20μm。第一部分32位于一对透明挡墙300之间，即第一部分32至少覆盖第一区域320。第二部分34位于一对透明挡墙300外，具体的，第二部分34位于透明挡墙300至可折叠显示设备100的边缘。本实施例中，第一部分32的厚度小于第二部分34的厚度，换言之，对应第一区域320的第一光学胶层30厚度小于第一区域320以外的第一光学胶层30的厚度。可折叠显示设备100折叠时，第一光学胶层30在第一区域320发生变形，第一光学胶层30的厚度越小，变形恢复越快，第一光学胶层30的厚度越大，粘性越好，不易脱落。第一光学胶层30的第一部分32对应第一区域320，第二部分34对应第一区域320以外的区域，第一部分32的厚度小于第二部分34的厚度，第一部分32厚度小、变形恢复快，满足可折叠显示设备100的折叠要求，第二部分34的厚度大、粘性强，第二部分34受到折叠、变形的影响小，保持足够的粘性，使偏光片40与触控面板20牢固连接。本实施例中，偏光片40，通过第一光学胶层30贴合于触控面板20上，偏光片40用于过滤照射向显示面板10的环境光线，避免环境光线照射至显示面板10后被反射，被反射的光线与显示面板10发出的光线混合影响显示面板10实际显示的图像。一种实施方式中，偏光片40为圆偏光片40。
对应第一区域320位置为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第一光学胶层30的第一部分32对应可折叠显示设备100的第一区域320位置，第一部分32的厚度小，避免了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
请参阅图2，本实施例中，一对透明挡墙300的设置方向相同，当可折叠显示设备100对折时，在折痕两侧的折叠影响区域对称，一对透明挡墙300平行，则两个透明挡墙300距离折痕的距离相同或对称，第一部分32在折痕两侧的折叠影响区域的覆盖区域相同，换言之，半个第一部分32对应覆盖半个折叠影响区域(第一区域320)，使可折叠显示设备100的弯折影响对称。一种实施方式中，一对透明挡墙300的设置方向均与第一区域320的中线60(相当于折痕)的 形成方向相同。透明挡墙300的设置方向与中线60的形成方向相同，可以理解为透明挡墙300的放置方向与第一区域320的边缘平行，一对透明挡墙300之间覆盖第一区域320，透明挡墙300与第一区域320的边缘之间的距离均匀。进一步的，透明挡墙300的设置方向与中线60的形成方向相同，透明挡墙300与可折叠显示设备100的中线60平行，透明挡墙300不影响第一区域320的折叠，提高了折叠效果。本实施例中，一对透明挡墙300对称分布于中线60的两侧，当可折叠显示设备100对折时，覆盖折痕(中线60)两侧的第一光学胶层30的第一部分32相同，第一光学胶层30收到折叠的变形对称，有利于第一光学胶层30的变形恢复。
请继续参阅图1，本实施例中，可折叠显示设备100还包括盖板50，盖板50位于偏光片40背离触控面板20的一侧，盖板50通过光学胶42粘贴于偏光片40上，用于保护偏光片40、触控面板20等。本实施例中，盖板50为柔性的透明盖板50，例如塑料等，盖板50具有柔性可折叠的特点。
对应第一区域320为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第一光学胶层30的第一部分32对应可折叠显示设备100的第一区域320位置，第一部分32的厚度小，避免了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
请参阅图4，本申请实施例二提供的可折叠显示设备100与实施例一的区别在于，盖板50与偏光片40之间还设有第二光学胶层302，盖板50通过第二光学胶层302粘贴于偏光片40上。具体的，第一光学胶层30与第二光学胶层302相同，换言之，第二光学胶层302也通过一对透明挡墙300分隔成第一部分32与第二部分34，其中第一部分32的厚度小于第二部分34的厚度。本实施例中，盖板50和偏光片40之间的第一部分32与触控面板20和偏光片40之间的第一部分32对应。结合图2，对应第一区域320位置为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第二光学胶层302的第一部分32对应可折叠显示设备100的第一区域320位置，第一部分32的厚度小，避免 了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
请参阅图5，本申请实施例三提供的可折叠显示设备100包括显示面板10、第一光学胶层30及触控面板20。本实施例中，第一基板为显示面板10，第二基板为触控面板20。第一光学胶层30位于显示面板10上，第一光学胶层30设有一对透明挡墙300，结合图2，本实施例中，透明挡墙300将第一光学胶层30分隔为第一部分32和第二部分34，第一部分32在显示面板10的垂直投影形成第一区域320，可折叠显示设备100处于折叠状态时，第一区域320为弯折状。第一区域320的中线60位置位于一对透明挡墙300之间，进一步的，一对透明挡墙300之间形成的区域至少覆盖第一区域320，当可折叠显示设备100的厚度均匀时，第一区域320以中线60对称分布，一对透明挡墙300对称设置于中线60的两侧，换言之，一对透明挡墙300以中线60为中线对称分布。一种实施方式中，透明挡墙300为非导电的固态透明材料制成，透明挡墙300不影响显示面板10的显示，绝缘的挡墙也不影响触控面板20的触控功能。一种实施方式中，透明挡墙300通过喷墨打印的方式形成，透明挡墙300的厚度为3～20μm。第一部分32位于一对透明挡墙300之间，即第一部分32至少覆盖第一区域320。第二部分34位于一对透明挡墙300外，具体的，第二部分34位于透明挡墙300至可折叠显示设备100的边缘。本实施例中，第一部分32的厚度小于第二部分34的厚度，换言之，对应第一区域320的第一光学胶层30厚度小于第一区域320以外的第一光学胶层30的厚度。可折叠显示设备100折叠时，第一光学胶层30在第一区域320发生变形，第一光学胶层30的厚度越小，变形恢复越快，第一光学胶层30的厚度越大，粘性越好，不易脱落。第一光学胶层30的第一部分32对应第一区域320，第二部分34对应第一区域320以外的区域，第一部分32的厚度小于第二部分34的厚度，第一部分32厚度小、变形恢复快，满足可折叠显示设备100的折叠要求，第二部分34的厚度大、粘性强，第二部分34受到折叠、变形的影响小，保持足够的粘性，使偏光片40与触控面板20牢固连接。本实施例中，触控面板20位于显示面板10的显示面一侧，触控面板20通过第一光学胶层30贴合于显示面 板10上。
对应第一区域320位置为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第一光学胶层30的第一部分32对应可折叠显示设备100的第一区域320位置，第一部分32的厚度小，避免了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
本实施例中，透明挡墙300的设置方向与中线60的形成方向相同。一种实施方式中，可折叠显示设备100沿中线60对折，透明挡墙300的设置方向与中线60的形成方向相同，可以理解为透明挡墙300的放置方向与第一区域320的边缘平行，一对透明挡墙300之间覆盖第一区域320，从而第一光学胶层30的第一部分32完全覆盖第一区域320，且透明挡墙300与第一区域320的边缘之间的距离均匀。进一步的，透明挡墙300的设置方向与中线60的形成方向相同，透明挡墙300与可折叠显示设备100的中线60平行，透明挡墙300不影响第一区域320的折叠，提高了折叠效果。
请继续参阅图5，本实施例中，可折叠显示设备100还包括盖板50，盖板50位于触控面板20背离显示面板10的一侧，盖板50通过光学胶42粘贴于触控面板20上，用于保护触控面板20、显示面板10等。本实施例中，盖板50为柔性的透明盖板50，例如塑料等，盖板50具有柔性可折叠的特点。
请参阅图6，本申请实施例四提供的可折叠显示设备100与实施例一的区别在于，盖板50与触控面板20之间还设有第三光学胶层304，盖板50通过第三光学胶层304粘贴于触控面板20上。具体的，第一光学胶层30与第三光学胶层304相同，换言之，盖板50和触控面板20之间的第三光学胶层304也通过一对透明挡墙300分隔成第一部分32与第二部分34，其中第一部分32的厚度小于第二部分34的厚度。本实施例中，盖板50和触控面板20之间的第一部分32与触控面板20和显示面板10之间的第一部分32对应。结合图2，第一区域320位置为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第三光学胶层304的第一部分32对应可折叠显示设备100的第一区域320位 置，第一部分32的厚度小，避免了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
请参阅图7至图9，本申请实施例还提供一种可折叠显示设备100的制作方法，具体步骤包括：
S101、提供第一基板12，在第一基板12上制作一对透明挡墙300。
请参阅图7，本实施例中，第一基板12可以为显示面板10、触控面板20、偏光片40等，一种实施方式中，透明挡墙300为非导电的固态透明材料制成，透明挡墙300不影响显示面板10的显示，绝缘的挡墙也不影响触控面板20的触控功能。一种实施方式中，透明挡墙300通过喷墨打印的方式形成，透明挡墙300的厚度为3～20μm。一种实施方式中，一对透明挡墙300垂直设置在第一基板12上。
S102、喷涂液态光学胶于基板上形成第一光学胶层30，透明挡墙300将第一光学胶层30分隔为第一部分32和第二部分34，第一部分32位于一对透明挡墙300之间，第二部分34位于一对透明挡墙300外，第一部分32的厚度小于第二部分34的厚度，第一部分32在第一基板12的垂直投影形成第一区域320，可折叠显示设备100处于折叠状态时，第一区域320为弯折状。
请参阅图8和图2，可折叠显示设备100的第一区域320位置位于一对透明挡墙300之间，进一步的，一对透明挡墙300之间形成的区域至少覆盖第一区域320，当可折叠显示设备100的厚度均匀时，第一区域320以中线60对称分布，一对透明挡墙300对称设置于中线60的两侧。一种实施方式中，透明挡墙300为非导电的固态透明材料制成，透明挡墙300不影响显示面板10的显示，绝缘的挡墙也不影响触控面板20的触控功能。本实施例中，透明挡墙300将第一光学胶层30分隔为第一部分32和第二部分34，第一部分32位于一对透明挡墙300之间，即第一部分32至少覆盖第一区域320。第二部分34位于一对透明挡墙300外，具体的，第二部分34位于透明挡墙300至可折叠显示设备100的边缘。本实施例中，第一部分32的厚度小于第二部分34的厚度，换言之，对应第一区域320的第一 光学胶层30厚度小于第一区域320以外的第一光学胶层30的厚度。可折叠显示设备100折叠时，第一光学胶层30在第一区域320发生变形，第一光学胶层30的厚度越小，变形恢复越快，第一光学胶层30的厚度越大，粘性越好，不易脱落。第一光学胶层30的第一部分32对应第一区域320，第二部分34对应第一区域320以外的区域，第一部分32的厚度小于第二部分34的厚度，第一部分32厚度小、变形恢复快，满足可折叠显示设备100的折叠要求，第二部分34的厚度大、粘性强，第二部分34受到折叠、变形的影响小，保持足够的粘性，使偏光片40与触控面板20牢固连接。
一种实施方式中，液态光学胶通过喷墨打印的方式喷涂于第一基板12上，喷涂当时简单易行，喷涂位置精度高。
S103、将第二基板14通过第一光学胶层30贴合于第一基板12上。
请参阅图9，本实施例中，第二基板14可以为触控面板20、偏光片40及盖板50等。
对应第一区域320位置为可折叠显示设备100进行展开状态与折叠状态之间的切换时受到折叠影响而变形的区域，第一光学胶层30的第一部分32对应可折叠显示设备100的第一区域320位置，第一部分32的厚度小，避免了第一部分32在展开状态与折叠状态之间的切换时压应力集中，第一部分32变形后回复快，满足可折叠显示设备100的折叠要求；第二部分34受到折叠变形的影响小，第二部分34厚度大，满足器件之间的粘结需求，粘结牢固，避免产生气泡，从而有利于可折叠显示设备100的结构实现。
以上所揭露的仅为本申请几种较佳实施例而已，当然不能以此来限定本申请之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本申请权利要求所作的等同变化，仍属于申请所涵盖的范围。

Claims (20)

  1. 一种可折叠显示设备，其中，包括：
    第一基板；
    第一光学胶层，位于所述第一基板的一侧，所述第一光学胶层设有一对透明挡墙，所述透明挡墙将所述第一光学胶层分隔为第一部分和第二部分，所述第一部分位于一对所述透明挡墙之间，所述第二部分位于一对所述透明挡墙外，所述第一部分的厚度小于所述第二部分的厚度，所述第一部分在所述第一基板的垂直投影形成第一区域，所述可折叠显示设备处于折叠状态时，所述第一区域为弯折状。
  2. 根据权利要求1所述的可折叠显示设备，其中，一对所述透明挡墙的设置方向相同。
  3. 根据权利要求1所述的可折叠显示设备，其中，一对所述透明挡墙垂直设置在所述第一基板上。
  4. 根据权利要求2所述的可折叠显示设备，其中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
  5. 根据权利要求4所述的可折叠显示设备，其中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光学胶层贴合于所述第一基板上。
  6. 根据权利要求5所述的可折叠显示设备，其中，所述可折叠显示设备还包括盖板，所述盖板位于所述第二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
  7. 根据权利要求4所述的可折叠显示设备，其中，所述可折叠显示设备还包括第二基板和偏光片，所述第二基板位于所述第一基板与所述第一光学胶层之间，所述偏光片位于所述第一光学胶层背离所述第二基板的一侧，所述偏光片通过所述第一光学胶层贴合于所述第二基板上。
  8. 根据权利要求7所述的可折叠显示设备，其中，所述可折叠显示设备还包括盖板，所述盖板位于所述偏光片背离所述第二基板的一侧，所述盖板与所 述第二基板之间还设有第三光学胶层，所述盖板通过所述第三光学胶层粘贴于所述第二基板上。
  9. 根据权利要求3所述的可折叠显示设备，其中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
  10. 根据权利要求9所述的可折叠显示设备，其中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光学胶层贴合于所述第一基板上。
  11. 根据权利要求10所述的可折叠显示设备，其中，所述可折叠显示设备还包括盖板，所述盖板位于所述第二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
  12. 根据权利要求9所述的可折叠显示设备，其中，所述可折叠显示设备还包括第二基板和偏光片，所述第二基板位于所述第一基板与所述第一光学胶层之间，所述偏光片位于所述第一光学胶层背离所述第二基板的一侧，所述偏光片通过所述第一光学胶层贴合于所述第二基板上。
  13. 根据权利要求12所述的可折叠显示设备，其中，所述可折叠显示设备还包括盖板，所述盖板位于所述偏光片背离所述第二基板的一侧，所述盖板与所述第二基板之间还设有第三光学胶层，所述盖板通过所述第三光学胶层粘贴于所述第二基板上。
  14. 一种可折叠显示设备的制作方法，其中，包括：
    提供第一基板，在所述第一基板上制作一对透明挡墙；
    喷涂液态光学胶于所述基板上形成所述光学胶层，所述透明挡墙将所述光学胶层分隔为第一部分和第二部分，所述第一部分位于一对所述透明挡墙之间，所述第二部分位于一对所述透明挡墙外，所述第一部分的厚度小于所述第二部分的厚度，所述第一部分在所述第一基板的垂直投影形成第一区域，所述可折叠显示设备处于折叠状态时，所述第一区域为弯折状；
    将第二基板通过所述光学胶层贴合于所述第一基板上。
  15. 根据权利要求14所述的可折叠显示设备的制作方法，其中，所述液态光学胶通过喷墨打印的方式喷涂于所述第一基板上。
  16. 根据权利要求13所述的可折叠显示设备的制作方法，其中，一对所述透明挡墙的设置方向相同。
  17. 根据权利要求13所述的可折叠显示设备的制作方法，其中，一对所述透明挡墙垂直设置在所述第一基板上。
  18. 根据权利要求17所述的可折叠显示设备的制作方法，其中，所述第一区域设有两个所述第二部分之间的中线，一对所述透明挡墙对称分布于所述中线的两侧。
  19. 根据权利要求18所述的可折叠显示设备的制作方法，其中，所述可折叠显示设备还包括第二基板，所述第二基板位于所述第一光学胶层背离所述第一基板的一侧，所述第二基板通过所述第一光学胶层贴合于所述第一基板上。
  20. 根据权利要求19所述的可折叠显示设备的制作方法，其中，所述可折叠显示设备还包括盖板，所述盖板位于所述第二基板背离所述第一基板的一侧，所述盖板与所述第二基板之间还设有第二光学胶层，所述盖板通过所述第二光学胶层粘贴于所述第二基板上。
PCT/CN2017/114019 2017-11-10 2017-11-30 可折叠显示设备及可折叠显示设备的制作方法 WO2019090867A1 (zh)

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