WO2022236904A1 - 显示面板及其制作方法 - Google Patents
显示面板及其制作方法 Download PDFInfo
- Publication number
- WO2022236904A1 WO2022236904A1 PCT/CN2021/098963 CN2021098963W WO2022236904A1 WO 2022236904 A1 WO2022236904 A1 WO 2022236904A1 CN 2021098963 W CN2021098963 W CN 2021098963W WO 2022236904 A1 WO2022236904 A1 WO 2022236904A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- display panel
- film
- film layer
- folding area
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 36
- 238000005452 bending Methods 0.000 claims abstract description 96
- 239000010410 layer Substances 0.000 claims description 246
- 239000012790 adhesive layer Substances 0.000 claims description 112
- 239000000463 material Substances 0.000 claims description 58
- 239000000853 adhesive Substances 0.000 claims description 48
- 230000001070 adhesive effect Effects 0.000 claims description 48
- 230000001681 protective effect Effects 0.000 claims description 37
- 238000010438 heat treatment Methods 0.000 claims description 28
- 239000002313 adhesive film Substances 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 24
- 239000002131 composite material Substances 0.000 claims description 23
- 239000011261 inert gas Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000003190 viscoelastic substance Substances 0.000 description 1
Classifications
-
- 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
- G09F9/301—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 flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
-
- 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 display field, in particular to a display panel and a manufacturing method thereof.
- the reliability of the display panel is related to the life of the adhesive layer.
- the tangential force on the surface of the adhesive layer points away from the center of the corresponding folding area, causing the surface of the adhesive layer to be stretched excessively, reducing the life of the adhesive layer in the bent state and reducing the reliability of the display panel. sex.
- Embodiments of the present invention provide a display panel and a manufacturing method thereof, which can solve the problem that the tangential force on the surface of the adhesive layer points away from the center of the corresponding curved surface when the display panel is bent in recent years, causing the surface of the adhesive layer to be overwhelmed. Stretching, the technical problem of reducing the life of the adhesive layer in the bent state.
- An embodiment of the present application provides a display panel, including a first folding area and non-folding areas located on both sides of the first folding area, the first folding area is provided with a first film layer, a second film layer and a tie layer between the first film layer and the second film layer;
- the adhesive layer includes a first surface in contact with the first film layer and a second surface in contact with the second film layer, and when the display panel is in a bent state, the first surface The first tangential force subjected to the first film layer and the second tangential force exerted on the second surface by the second film layer point toward the center of the first folding region.
- the first surface when the display panel is in a bent state, the first surface is close to the concave direction of the first folding area, and the second surface is close to the convex direction of the first folding area;
- the first tangential force on the first surface points to the center of the first folding area, and the second tangential force on the second surface is zero.
- the orthographic projection of the second surface on the first surface is located within the first surface; state, the orthographic projection of the first surface on the second surface is located within the second surface.
- the orthographic projections of the first surface on the second surface are located within the second surface.
- the bending curvature of the display panel is greater than zero.
- the display panel further includes a second folding area corresponding to the first folding area, and the bending of the film layer in the second folding area and the film layer in the first folding area same direction.
- the bonding layer includes an adhesive film main body, and the material of the adhesive film main body is optical glue.
- the embodiment of the present application also provides a method for manufacturing a display panel, the display panel includes a first folding area and non-folding areas located on both sides of the first folding area, the manufacturing method of the display panel includes:
- a bonding layer is provided, the bonding layer includes a bending section corresponding to the first folding area and a first section and a second section corresponding to the non-folding area, the bending curvature of the bending section is first curvature;
- a first film layer is provided, and the first film layer is attached to the first surface of the adhesive layer to form a composite film layer;
- the first surface is subjected to a first tangential force of the first film layer and the second surface is subjected to a second tangential force of the second film layer Point to the center of the first fold area.
- an adhesive layer is provided, the adhesive layer includes a bent section corresponding to the first folding area and a first section and a second section corresponding to the non-folding area, the The step that the bending curvature of the bending section is the first curvature includes: providing an adhesive material layer, the adhesive material layer including a bending section corresponding to the first folding area and a bending section corresponding to the non-folding area. The first section and the second section; the bonding material layer is placed on the first jig for bending, so that the bending curvature of the bending section is the first curvature; the bonding material layer and the The first jig is separated to obtain the adhesive layer.
- the adhesive material layer includes a first protective film, a second protective film, and an adhesive film body located between the first protective film and the second protective film, the adhesive
- the step of placing the bonding material layer on the first jig for bending so that the bending curvature of the bent section is the first curvature includes: placing the bonding material layer on the first jig, and The first fixture is located near the first protective film side; the second protective film is removed; the first protective film and the adhesive film main body are bent on the first fixture, so that The bending curvature of the bending section is the first curvature.
- step of removing the second protective film further comprising: forming a third protective film on a side of the adhesive film body away from the first protective film.
- the step of setting the composite film layer in a flattened state and forming a second film layer on the second surface of the adhesive layer away from the first film layer comprises: removing the third protective film; placing the composite film layer in a flattened state; forming a second film layer on the second surface of the bonding layer away from the first film layer.
- the step of placing the adhesive material layer on the first jig for bending includes: placing the adhesive material layer on the first jig; The layer of adhesive material is heated while bending the layer of adhesive material.
- the heating temperature is 50°C to 80°C.
- the step of heating the adhesive material layer includes: heating the adhesive material layer from a first temperature to a second temperature at a first heating rate; A second temperature ramp rate heats from the second temperature to a third temperature.
- the first heating rate is greater than the second heating rate.
- the first jig includes a first convex portion, the first convex portion corresponds to the first folding area, and the first folding area corresponds to the bending section.
- the display panel further includes a second folding area corresponding to the first folding area, and the bending of the film layer in the second folding area and the film layer in the first folding area same direction.
- the first jig includes a first convex portion and a second convex portion; the first convex portion corresponds to the first folding area, and the second convex portion corresponds to the second folding area .
- the step of placing the adhesive material layer on the first jig for bending further includes: applying an inert gas on the adhesive material layer; placing the adhesive material layer keeping on the first jig for a first time.
- the adhesive layer by bending the adhesive layer in advance, it is bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer receives the tangential force of the adjacent film layer and points to the first fold In the center of the area, when the display panel is bent, the surface of the adhesive layer is prevented from being excessively stretched, which can effectively relieve the bending stress of the adhesive layer, prolong the life of the adhesive layer, and improve the reliability of the display panel.
- FIG. 1 is a schematic structural diagram of a first state of a first structure of a display panel provided by an embodiment of the present invention
- Fig. 2 is a schematic structural diagram of the second state of the first structure of the display panel provided by the embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a second structure of a display panel provided by an embodiment of the present invention.
- Fig. 4 is a schematic structural diagram of a third structure of a display panel provided by an embodiment of the present invention
- FIG. 5 is a flowchart of steps of a method for manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 6 is a first schematic flowchart of a method for manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 7 is a second schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 8 is a schematic flowchart of a third method of manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 9 is a schematic flowchart of a fourth method of manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 10 is a schematic flowchart of a fifth method of manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 11 is a schematic flowchart of a sixth method of manufacturing a display panel provided by an embodiment of the present invention.
- FIG. 12 is a schematic diagram of a seventh flow chart of a manufacturing method of a display panel provided by an embodiment of the present invention.
- the present application provides a display panel and a manufacturing method thereof.
- the present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present application, not to limit the present application.
- Embodiments of the present application provide a display panel and a manufacturing method thereof. Each will be described in detail below. It should be noted that the description sequence of the following embodiments is not intended to limit the preferred sequence of the embodiments.
- an embodiment of the present invention provides a display panel 100, including a first folding area 110 and non-folding areas 120 located on both sides of the first folding area 110, the first folding area 110 is provided with The first film layer 200, the second film layer 400 and the adhesive layer 300 between the first film layer 200 and the second film layer 400;
- the adhesive layer 300 includes a first surface 310 in contact with the first film layer 200 and a second surface 320 in contact with the second film layer 400, when the display panel 100 is in a bent state , the first surface 310 is subjected to the first tangential force of the first film layer 200 and the second surface 320 is subjected to the second tangential force of the second film layer 400 to point to the first folding region 110 center of.
- the adhesive layer by bending the adhesive layer in advance, it is bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer receives the tangential force of the adjacent film layer and points to the first fold In the center of the area, when the display panel is bent, the surface of the adhesive layer is prevented from being excessively stretched, which can effectively relieve the bending stress of the adhesive layer, prolong the life of the adhesive layer, and improve the reliability of the display panel.
- the display panel 100 includes a first folding area 110 and non-folding areas 120 located on both sides of the first folding area 110, the first folding area 110 is provided with a first film layer 200, a second film layer 400 and An adhesive layer 300 located between the first film layer 200 and the second film layer 400; wherein, the adhesive layer 300 includes a first surface 310 in contact with the first film layer 200 and a first surface 310 in contact with the first film layer 400; The second surface 320 in contact with the second film layer 400, when the display panel 100 is bent, the first surface 310 is subjected to the first tangential force of the first film layer 200 and the second The surface 320 receives the second tangential force of the second film layer 400 and points to the center of the first folding region 110 , please refer to FIG. 1 for details.
- the tangential force on the surface of the adhesive layer 300 points to the center of the first folding region 110.
- the stretching force on the surface of the adhesive layer 300 is slowed down, the surface of the adhesive layer 300 is subjected to a compressive force, so that the surface of the adhesive layer 300 is prevented from being overstretched, and the bending of the adhesive layer 300 can be effectively relieved. stress, prolong the life of the adhesive layer 300, and improve the reliability of the display panel 100.
- the first surface 310 when the display panel 100 is in a bent state, the first surface 310 is close to the concave direction of the first folding region 110 , and the second surface 320 is close to the direction of the first folding region 110
- the first tangential force of the first surface 310 points to the center of the first folding area 110
- the first The second tangential force of the two surfaces 320 is zero, please refer to FIG. 2 for details.
- the display panel 100 when the first film layer 200 is bonded, it is bonded when the bonding layer 300 has a first curvature, and when the bending curvature of the bonding layer 300 is the first curvature, the internal stress of the bonding layer 300 is zero, and the bending curvature of the first film layer 200 is also the first curvature, and the first film layer 200 and the bonding layer 300 are in the first When the curvature is tight, the tangential force between the first film layer 200 and the adhesive layer 300 is zero.
- the second film layer 400 When the second film layer 400 is attached to the adhesive layer 300, the second film layer 400 is in a flattened state, and the first film layer 200 and the adhesive layer 300 are also in a flattened state, At this time, the first surface 310 is subjected to the first tangential force of the first film layer 200 and points to the center of the first folding region 110 , and the second surface 320 is subjected to the second film layer 400 The second tangential force is zero.
- the force between the second film layer 400 and the adhesive layer 300 is relieved, and at the same time, the first film layer 200 and the adhesive layer
- the tangential force between 300 is zero, and the tangential force between the two is not very large when flattened, which is beneficial to prolong the life of the adhesive layer 300 .
- the orthographic projection of the second surface 320 on the first surface 310 is located inside the first surface 310; when the display panel 100 is In the flattened state, the orthographic projection of the first surface 310 on the second surface 320 is located inside the second surface 320 , please refer to FIG. 1 and FIG. 2 for details.
- the adhesive layer 300 itself can have different stretching relationships on the premise that no film layer displacement occurs, so as to relieve the bending stress during the bending process.
- the orthographic projections of the first surface 310 on the second surface 320 are located inside the second surface 320, specifically Please refer to Figure 2 and Figure 3.
- the adhesive layer 300 is made of raw materials, the surface area of the second surface 320 is greater than the surface area of the first surface 310 , and the second surface 320 will is larger than the surface area of the first surface 310, the second surface 320 is close to the protruding direction of the first folding region 110, and the deformation pressure and deformation stroke during bending are longer than the first surface 310, slightly
- the large second surface 320 can reduce the unit stress received during unit deformation, thereby alleviating the misalignment or bending stress of the film layer, and the adhesive layer 300 itself can have different stretching relationships, thereby alleviating the stress during the bending process. bending stress.
- the bending curvature of the display panel 100 when the display panel 100 is at rest, the bending curvature of the display panel 100 is greater than zero.
- the bending curvature at rest is the second curvature, and the bending curvature when bonding the first film layer 200 and the adhesive layer 300 is the first curvature, and the first curvature is greater than the second curvature.
- the internal stress of the adhesive layer 300 is zero, so when bending, from flattening to complete bending, the internal stress of the adhesive layer 300 (only the size is discussed) changes from The process of changing from zero to zero can reduce the absolute internal stress of the bonding layer 300 .
- the display panel 100 further includes a second folding region 130 corresponding to the first folding region 110 , the film layer in the second folding region 130 is compatible with the film layer in the first folding region 110
- the layers are bent in the same direction, see Figure 4 for details. It can be applied to the double-folded display panel 100 on the same side.
- the first folding area 110 and the second folding area 130 are provided to further relieve the internal stress of the adhesive layer 300 .
- the tangential stress of the adhesive layer 300 in the second folding area 130 may act in the same manner as the tangential stress of the adhesive layer 300 in the first folding area 110 .
- the display panel 100 may further include a plurality of third folding areas, and the third folding areas may be in any area of the display panel 100, according to different bending design requirements of the display panel 100, The internal stress of the adhesive layer 300 is relieved, the service life of the adhesive layer 300 is prolonged, and the reliability of the display panel 100 is improved.
- the adhesive layer 300 includes an adhesive film main body 340 , and the material of the adhesive film main body 340 may be optical adhesive, and reference may be made to FIG. 6 of the manufacturing flowchart of the display panel 100 .
- the first film layer 200 and the second film layer 400 may not be limited to a specific film layer of the display panel 100, and may be changed according to the actual situation of the display panel 100, for example, the The first film layer 200 is a back plate layer, and the second film layer 400 is a steel plate layer.
- the adhesive layer by bending the adhesive layer in advance, it is bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer receives the tangential force of the adjacent film layer and points to the first fold In the center of the area, when the display panel is bent, the surface of the adhesive layer is prevented from being excessively stretched, which can effectively relieve the bending stress of the adhesive layer, prolong the life of the adhesive layer, and improve the reliability of the display panel.
- an embodiment of the present invention also provides a method for manufacturing a display panel 100 , including a first folding region 110 and non-folding regions 120 located on both sides of the first folding region 110 , the display panel 100 Production methods include:
- the adhesive layer 300 comprising a bent segment 350 corresponding to the first folding area 110 and a first segment 361 and a second segment 362 corresponding to the non-folding area 120,
- the bending curvature of the bending section 350 is a first curvature
- S200 Provide a first film layer 200, and attach the first film layer 200 to the first surface 310 of the adhesive layer 300 to form a composite film layer;
- the first surface 310 is subjected to the first tangential force of the first film layer 200 and the second surface 320 is subjected to the force of the second film layer 400
- the second tangential force is directed towards the center of the first folding region 110 .
- the adhesive layer by bending the adhesive layer in advance, it is bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer receives the tangential force of the adjacent film layer and points to the first fold In the center of the area, when the display panel is bent, the surface of the adhesive layer is prevented from being excessively stretched, which can effectively relieve the bending stress of the adhesive layer, prolong the life of the adhesive layer, and improve the reliability of the display panel.
- the manufacturing method of the display panel 100 includes:
- the adhesive layer 300 comprising a bent segment 350 corresponding to the first folding area 110 and a first segment 361 and a second segment 362 corresponding to the non-folding area 120,
- the bending curvature of the bending section 350 is the first curvature, please refer to FIG. 9 for details.
- the display panel 100 includes a first folding area 110 and non-folding areas 120 located on both sides of the first folding area 110 , please refer to FIG. 1 for details.
- the display panel 100 further includes a second folding region 130 corresponding to the first folding region 110 , the film layer in the second folding region 130 is compatible with the film layer in the first folding region 110
- the layers are bent in the same direction, see Figure 4 for details. It can be applied to the double-folded display panel 100 on the same side.
- the first folding area 110 and the second folding area 130 are provided to further relieve the internal stress of the adhesive layer 300 .
- the tangential stress of the adhesive layer 300 in the second folding area 130 may act in the same manner as the tangential stress of the adhesive layer 300 in the first folding area 110 .
- step S100 includes:
- the adhesive material layer 330 includes a bent segment 350 corresponding to the first folding area 110 and a first segment 361 and a second segment corresponding to the non-folding area 120 362, please refer to Figure 9 for details.
- the adhesive material layer 330 includes a first protective film 331, a second protective film 332, and an adhesive film main body 340 located between the first protective film 331 and the second protective film 332, specifically See Figure 6.
- the first jig 510 includes a first convex portion 511, the first convex portion 511 corresponds to the first folding area 110, and the first folding area 110 corresponds to the bending section 350, Please refer to Figure 9 for details.
- the first jig 510 includes a first convex portion 511 and a second convex portion; the adhesive layer 300 also includes a second folding area 130 corresponding to the first folding area 110, the The film layers in the second folding area 130 are bent in the same direction as the film layers in the first folding area 110 .
- the first protrusion 511 corresponds to the first folding area 110
- the second protrusion corresponds to the second folding area 130 .
- the step of placing the adhesive material layer 330 on the first jig 510 for bending includes:
- the step of heating the adhesive material layer 330 may be bent and then heated, or heated first and then bent, or bent and then heated.
- the above-mentioned step S120b is only an example of bending on one side and then heating.
- the heating temperature may be 50° C. to 80° C.
- heating the adhesive material layer 330 can speed up the removal of internal stress of the adhesive film main body 340 and the formation of the adhesive layer 300 .
- the step of heating the adhesive material layer 330 includes:
- the rate of removing the internal stress of the main body 340 of the adhesive film is increased through temperature programming to accelerate the formation of the adhesive layer 300 .
- the first heating rate is greater than the second heating rate.
- the heating method is fast first and then slow. During the slow heating process, it is beneficial to remove the internal stress of the main body 340 of the adhesive film, and does not affect the formation rate of the adhesive material.
- the step of placing the adhesive material layer 330 on the first jig 510 for bending may further include:
- applying an inert gas on the adhesive material layer 330 can increase the bonding between the adhesive material layer 330 and the first jig 510 , which is beneficial to the formation of the first folding region 110 , the pressure of the inert gas can be greater than one atmospheric pressure, and the specific pressure can be set according to different processes.
- the main body of the adhesive film 340 itself is a viscoelastic material, the main body of the adhesive film 340 still has internal stress when it is initially deformed on the first jig 510. The stress will gradually disappear, so the static step can further eliminate the internal stress, and obtain a membrane material that satisfies bending and has no internal stress.
- step S120 includes:
- removing the second protective film 332 can fully bend the adhesive film main body 340, so that the internal stress of the adhesive film main body 340 in the bent state becomes zero, which is convenient for the adhesive
- the application of the film body 340 in the display panel 100 can effectively relieve the bending stress of the adhesive layer 300 , prolong the life of the adhesive layer 300 and improve the reliability of the display panel 100 .
- step S122 it may further include:
- the third protective film 333 can protect the adhesive film main body 340 and facilitate operations such as movement of the adhesive layer 300 .
- the main body 340 of the adhesive film after the stress disappears is then subjected to a coating operation to obtain an adhesive layer 300 that satisfies bending and has no internal stress.
- the third protection film 333 is provided as a whole layer.
- the third protective film 333 can protect the adhesive film main body 340 and have a shaping effect at the same time.
- step S123 can be omitted, and S124 is directly performed.
- the bending curvature of the adhesive layer 300 when standing still is the first curvature.
- the internal stress of the adhesive layer 300 is zero, that is, the subsequent Before the adhesive layer 300 is laminated with other film layers, the adhesive layer 300 is already in a bent shape with a bending curvature.
- S200 Provide a first film layer 200, and attach the first film layer 200 to the first surface 310 of the adhesive layer 300 to form a composite film layer. Please refer to FIG. 10 for details.
- step S200 includes:
- the first film layer 200 includes a bent area corresponding to the first curvature, that is, the first film layer 200 includes a bent area corresponding to the bent section 350 of the adhesive layer 300
- the tangential force on both surfaces of the adhesive layer 300 is zero, and the internal stress of the adhesive layer is zero.
- step S220 includes:
- the bending curvature of the formed bent region of the composite membrane layer is the first curvature, and the internal stress of the composite membrane layer is zero.
- the first surface 310 of the adhesive layer 300 is subjected to the first tangential force of the first film layer 200 is zero, and the second surface 320 of the adhesive layer 300 corresponding to the first surface 310 is subjected to The second tangential force is zero, please refer to Figure 10 for details.
- the bending curvature in FIG. 10 is the first curvature
- the bending curvature in FIG. 12 is the second curvature.
- step S300 includes:
- the third protective film 333 needs to be removed so that the adhesive The film main body 340 is exposed to improve the bonding force between the adhesive layer 300 and the second film layer 400 .
- the second film layer 400 is laminated by placing the composite film layer in a flattened state, which can relieve the bending between the second film layer 400 and the adhesive layer 300 When the interaction force increases, the service life of the adhesive layer 300 is improved.
- the curvature of the component formed by the composite film layer and the second film layer 400 is the second curvature
- the first curvature is greater than the second curvature
- the adhesive layer by bending the adhesive layer in advance, it is bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer receives the tangential force of the adjacent film layer and points to the first fold In the center of the area, when the display panel is bent, the surface of the adhesive layer is prevented from being excessively stretched, which can effectively relieve the bending stress of the adhesive layer, prolong the life of the adhesive layer, and improve the reliability of the display panel.
- the embodiment of the present invention discloses a display panel and a manufacturing method thereof; the display panel includes a first folding area and non-folding areas located on both sides of the first folding area, and a first film layer, a second film layer and a second film layer are arranged in the first folding area.
- the adhesive layer includes a first surface in contact with the first film layer and a second surface in contact with the second film layer, when the display panel In the bent state, the first surface is subjected to the first tangential force of the first film layer and the second surface is subjected to the second tangential force of the second film layer to point to the center of the first folding area;
- the junction layer is bent in advance, bent and bonded with the first film layer, and flatly bonded with the second film layer, so that the surface of the adhesive layer is subjected to the tangential force of the adjacent film layer and points to the center of the first folding area.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
一种显示面板（100）及其制作方法；显示面板（100）包括设置于第一折叠区（110）内的第一膜层（200）、第二膜层（400）及粘结层（300）；当显示面板（100）弯折状态时，粘结层（300）的第一表面（310）受到第一膜层（200）的切向力和第二表面（320）受到第二膜层（400）的切向力指向第一折叠区（110）的中心；将粘结层（300）提前弯折，分别与第一膜层（200）、第二膜层（400）弯折贴合、平面贴合，缓解粘结层（300）的弯折应力。
Description
本申请涉及显示领域，尤其涉及一种显示面板及其制作方法。
近些年，可折叠显示面板的热度越来越高，显示面板的可靠性与其中的粘结层的寿命相关，在粘结层贴合完成后，粘结层呈现展平状态，但是在显示面板进行弯折时，粘结层表面的切向力指向远离对应折叠区的中心，导致粘结层表面被过度拉伸，使得弯折状态的粘结层的寿命减少，降低了显示面板的可靠性。
因此，亟需一种显示面板及其制作方法以解决上述技术问题。
本发明实施例提供一种显示面板及其制作方法，可以解决近些年在显示面板进行弯折时，粘结层表面的切向力指向远离对应弧面的中心，导致粘结层表面被过度拉伸，使得弯折状态的粘结层的寿命减少的技术问题。
为解决上述问题，本申请提供的技术方案如下：
本申请实施例提供了一种显示面板，包括第一折叠区及位于所述第一折叠区两侧的非折叠区，所述第一折叠区内设置有第一膜层、第二膜层及位于所述第一膜层与所述第二膜层之间的粘结层；
其中，所述粘结层包括与所述第一膜层接触的第一表面以及与所述第二膜层接触的第二表面，当所述显示面板为弯折状态时，所述第一表面受到所述第一膜层的第一切向力和所述第二表面受到所述第二膜层的第二切向力指向所述第一折叠区的中心。
在一实施例中，当所述显示面板为弯折状态时，所述第一表面靠近所述第一折叠区的凹陷方向，所述第二表面靠近所述第一折叠区的凸出方向；当所述显示面板为展平状态时，所述第一表面的所述第一切向力指向所述第一折叠区的中心，所述第二表面的所述第二切向力为零。
在一实施例中，当所述显示面板为弯折状态时，所述第二表面在所述第一表面上的正投影位于所述第一表面内；当所述显示面板为所述展平状态时，所述第一表面在所述第二表面上的正投影位于所述第二表面内。
在一实施例中，当所述显示面板为弯折状态时或展平状态时，所述第一表面在所述第二表面上的正投影均位于所述第二表面内。
在一实施例中，当所述显示面板静置时，所述显示面板的弯曲曲率大于零。
在一实施例中，所述显示面板还包括与所述第一折叠区对应的第二折叠区，所述第二折叠区内的膜层与所述第一折叠区内的膜层的弯折方向相同。
在一实施例中，所述粘结层包括胶膜主体，所述胶膜主体的材料为光学胶。
本申请实施例还提供了一种显示面板的制作方法，所述显示面板包括第一折叠区及位于所述第一折叠区两侧的非折叠区，所述显示面板的制作方法包括：
提供一粘结层，所述粘结层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段，所述弯折段的弯曲曲率为第一曲率；
提供一第一膜层，将所述第一膜层与所述粘结层的第一表面贴合，形成复合膜层；
将所述复合膜层设置为展平状态，以及在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层，所述复合膜层及所述第二膜层形成的构件的曲率为第二曲率，所述第一曲率大于所述第二曲率；
其中，当所述显示面板为弯折状态时，所述第一表面受到所述第一膜层的第一切向力和所述第二表面受到所述第二膜层的第二切向力指向所述第一折叠区的中心。
在一实施例中，所述提供一粘结层，所述粘结层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段，所述弯折段的弯曲曲率为第一曲率的步骤，包括：提供一粘结材料层，所述粘结材料层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段；将所述粘结材料层放置于第一治具上进行弯折，使所述弯折段的弯曲曲率为第一曲率；将所述粘结材料层与所述第一治具分离，得到所述粘结层。
在一实施例中，所述粘结材料层包括第一保护膜、第二保护膜及位于所述第一保护膜与所述第二保护膜之间的胶膜主体，所述将所述粘结材料层放置于第一治具上进行弯折，使所述弯折段的弯曲曲率为第一曲率的步骤，包括：将所述粘结材料层放置于所述第一治具上，所述第一治具位于靠近所述第一保护膜一侧；去除所述第二保护膜；将所述第一保护膜及所述胶膜主体在所述第一治具上进行弯折，使所述弯折段的弯曲曲率为所述第一曲率。
在一实施例中，所述去除所述第二保护膜的步骤之后，还包括：在所述胶膜主体远离所述第一保护膜一侧形成第三保护膜。
在一实施例中，所述将所述复合膜层设置为展平状态，以及在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层的步骤包括：将所述第三保护膜去除；将所述复合膜层设置为展平状态；在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层。
在一实施例中，所述将所述粘结材料层放置于第一治具上进行弯折的步骤，包括：将所述粘结材料层放置于所述第一治具上；对所述粘结材料层加热，同时对所述粘结材料层进行弯折。
在一实施例中，所述加热温度为50℃至80℃。
在一实施例中，所述对所述粘结材料层加热的步骤包括：对所述粘结材料层以第一升温速率从第一温度加热至第二温度；对所述粘结材料层以第二升温速率从所述第二温度加热至第三温度。
在一实施例中，所述第一升温速率大于所述第二升温速率。
在一实施例中，所述第一治具包括第一凸部，所述第一凸部对应所述第一折叠区，所述第一折叠区对应所述弯折段。
在一实施例中，所述显示面板还包括与所述第一折叠区对应的第二折叠区，所述第二折叠区内的膜层与所述第一折叠区内的膜层的弯折方向相同。
在一实施例中，所述第一治具包括第一凸部及第二凸部；所述第一凸部对应所述第一折叠区，所述第二凸部对应所述第二折叠区。
在一实施例中，所述将所述粘结材料层放置于第一治具上进行弯折的步骤还包括：在所述粘结材料层上施加惰性气体；将所述粘结材料层放置于所述第一治具上保持第一时间。
本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
图1是本发明实施例提供的显示面板的第一种结构的第一种状态的结构示意图；
图2是本发明实施例提供的显示面板的第一种结构的第二种状态的结构示意图；
图3是本发明实施例提供的显示面板的第二种结构的结构示意图；
图4是本发明实施例提供的显示面板的第三种结构的结构示意图
图5是本发明实施例提供的显示面板的制作方法的步骤流程图；
图6是本发明实施例提供的显示面板的制作方法的第一种流程示意图；
图7是本发明实施例提供的显示面板的制作方法的第二种流程示意图；
图8是本发明实施例提供的显示面板的制作方法的第三种流程示意图；
图9是本发明实施例提供的显示面板的制作方法的第四种流程示意图；
图10是本发明实施例提供的显示面板的制作方法的第五种流程示意图；
图11是本发明实施例提供的显示面板的制作方法的第六种流程示意图；
图12是本发明实施例提供的显示面板的制作方法的第七种流程示意图。
本申请提供一种显示面板及其制作方法，为使本申请的目的、技术方案及效果更加清楚、明确，以下参照附图并举实施例对本申请进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
本申请实施例提供一种显示面板及其制备方法。以下分别进行详细说明。需说明的是，以下实施例的描述顺序不作为对实施例优选顺序的限定。
请参阅图1，本发明实施例提供了一种显示面板100，包括第一折叠区110及位于所述第一折叠区110两侧的非折叠区120，所述第一折叠区110内设置有第一膜层200、第二膜层400及位于所述第一膜层200与所述第二膜层400之间的粘结层300；
其中，所述粘结层300包括与所述第一膜层200接触的第一表面310以及与所述第二膜层400接触的第二表面320，当所述显示面板100为弯折状态时，所述第一表面310受到所述第一膜层200的第一切向力和所述第二表面320受到所述第二膜层400的第二切向力指向所述第一折叠区110的中心。
本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
现结合具体实施例对本发明的技术方案进行描述。
所述显示面板100包括第一折叠区110及位于所述第一折叠区110两侧的非折叠区120，所述第一折叠区110内设置有第一膜层200、第二膜层400及位于所述第一膜层200与所述第二膜层400之间的粘结层300；其中，所述粘结层300包括与所述第一膜层200接触的第一表面310以及与所述第二膜层400接触的第二表面320，当所述显示面板100为弯折状态时，所述第一表面310受到所述第一膜层200的第一切向力和所述第二表面320受到所述第二膜层400的第二切向力指向所述第一折叠区110的中心，具体请参阅图1。
本实施例中，所述显示面板100在弯折时，所述粘结层300表面受到的切向力均指向所述第一折叠区110的中心，具体请参阅图1，这样可以在弯折时，减缓所述粘结层300表面的拉伸力，所述粘结层300表面受到的是压缩的力，避免粘结层300表面被过度拉伸，可以有效缓解粘结层300的弯折应力，延长粘结层300的寿命，提高显示面板100可靠性。
本实施例中，当所述显示面板100为弯折状态时，所述第一表面310靠近所述第一折叠区110的凹陷方向，所述第二表面320靠近所述第一折叠区110的凸出方向，具体请参阅图1；当所述显示面板100为展平状态时，所述第一表面310的所述第一切向力指向所述第一折叠区110的中心，所述第二表面320的所述第二切向力为零，具体请参阅图2。所述显示面板100在制作时，贴合所述第一膜层200时，是在所述粘结层300为第一曲率时贴合的，当所述粘结层300的弯曲曲率为第一曲率时，所述粘结层300的内应力为零，所述第一膜层200的弯曲曲率也为第一曲率，所述第一膜层200与所述粘结层300在所述第一曲率时贴合，所述第一膜层200与所述粘结层300之间的切向力为零。所述第二膜层400与所述粘结层300贴合时，所述第二膜层400是展平状态，所述第一膜层200及所述粘结层300也处于展平状态，此时，所述第一表面310受到所述第一膜层200的所述第一切向力指向所述第一折叠区110的中心，所述第二表面320受到所述第二膜层400的所述第二切向力为零。在显示面板100处于展平状态时，缓解了所述第二膜层400与所述粘结层300之间的作用力，同时由于贴合时所述第一膜层200与所述粘结层300之间的切向作用力为零，在展平时，二者的切向作用力不会很大，有利于延长所述粘结层300的寿命。
本实施例中，当所述显示面板100为弯折状态时，所述第二表面320在所述第一表面310上的正投影位于所述第一表面310内；当所述显示面板100为所述展平状态时，所述第一表面310在所述第二表面320上的正投影位于所述第二表面320内，具体请参阅图1、图2。不同的表面在不同状态时，所述粘结层300在不产生膜层错动的前提下，粘结层300本身可以有不同的拉伸关系，从而缓解在弯折过程中的弯折应力。
本实施例中，当所述显示面板100为弯折状态时或展平状态时，所述第一表面310在所述第二表面320上的正投影均位于所述第二表面320内，具体请参阅图2、图3。在所述粘结层300原料时，所述第二表面320的表面积大于所述第一表面310的表面积，无论在制作时，或是在显示面板100弯折时，所述第二表面320均是大于所述第一表面310的表面积，所述第二表面320靠近所述第一折叠区110的凸出方向，弯折时的形变压力及形变行程是长于所述第一表面310的，稍大的所述第二表面320可以减少单位形变时受到的单位应力，从而缓解膜层错动或弯折应力，粘结层300本身可以有不同的拉伸关系，从而缓解在弯折过程中的弯折应力。
本实施例中，当所述显示面板100静置时，所述显示面板100的弯曲曲率大于零。静置时的弯曲曲率为第二曲率，在贴合所述第一膜层200及所述粘结层300时的弯曲曲率为第一曲率，所述第一曲率大于所述第二曲率，在所述第二曲率时，所述粘结层300的内应力为零，所以在弯折时，从展平至完全弯折时，所述粘结层300的内应力（仅讨论大小）从有变零再变有的过程，可以将所述粘结层300的绝对内应力减小。
本实施例中，所述显示面板100还包括与所述第一折叠区110对应的第二折叠区130，所述第二折叠区130内的膜层与所述第一折叠区110内的膜层的弯折方向相同，具体请参阅图4。可以应用于同侧双折的显示面板100，对于双折的显示面板100，有所述第一折叠区110及所述第二折叠区130的设置，进一步缓解所述粘结层300的内应力。所述第二折叠区130的所述粘结层300的切向应力可以与所述第一折叠区110内的所述粘结层300的切向应力作用方式相同。
本实施例中，所述显示面板100还可以包括多个第三折叠区，所述第三折叠区可以在所述显示面板100的任一区域，根据不同的显示面板100的弯折设计需要，缓解所述粘结层300的内应力，延长粘结层300的寿命，提高显示面板100可靠性。
本实施例中，所述粘结层300包括胶膜主体340，所述胶膜主体340的材料可以为光学胶，可以参考显示面板100的制作流程图的图6。
本实施例中，所述第一膜层200及所述第二膜层400可以不限定为所述显示面板100的某一具体膜层，可以根据显示面板100的实际情况进行改变，例如，所述第一膜层200为背板层，所述第二膜层400为钢板层。
本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
请参阅图5，本发明实施例还提供了一种显示面板100的制作方法，包括第一折叠区110及位于所述第一折叠区110两侧的非折叠区120，所述显示面板100的制作方法包括：
S100、提供一粘结层300，所述粘结层300包括与所述第一折叠区110对应的弯折段350及与所述非折叠区120对应的第一段361及第二段362，所述弯折段350的弯曲曲率为第一曲率；
S200、提供一第一膜层200，将所述第一膜层200与所述粘结层300的第一表面310贴合，形成复合膜层；
S300、将所述复合膜层设置为展平状态，以及在所述粘结层300远离所述第一膜层200一侧的第二表面320上形成第二膜层400，所述复合膜层及所述第二膜层400形成的构件的曲率为第二曲率，所述第一曲率大于所述第二曲率；
其中，当所述显示面板100为弯折状态时，所述第一表面310受到所述第一膜层200的第一切向力和所述第二表面320受到所述第二膜层400的第二切向力指向所述第一折叠区110的中心。
本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
现结合具体实施例对本发明的技术方案进行描述。
所述显示面板100的制作方法包括：
S100、提供一粘结层300，所述粘结层300包括与所述第一折叠区110对应的弯折段350及与所述非折叠区120对应的第一段361及第二段362，所述弯折段350的弯曲曲率为第一曲率，具体请参阅图9。
本实施例中，所述显示面板100包括第一折叠区110及位于所述第一折叠区110两侧的非折叠区120，具体请参阅图1。
本实施例中，所述显示面板100还包括与所述第一折叠区110对应的第二折叠区130，所述第二折叠区130内的膜层与所述第一折叠区110内的膜层的弯折方向相同，具体请参阅图4。可以应用于同侧双折的显示面板100，对于双折的显示面板100，有所述第一折叠区110及所述第二折叠区130的设置，进一步缓解所述粘结层300的内应力。所述第二折叠区130的所述粘结层300的切向应力可以与所述第一折叠区110内的所述粘结层300的切向应力作用方式相同。
本实施例中，步骤S100包括：
S110、提供一粘结材料层330，所述粘结材料层330包括与所述第一折叠区110对应的弯折段350及与所述非折叠区120对应的第一段361及第二段362，具体请参阅图9。
S120、将所述粘结材料层330放置于第一治具510上进行弯折，使所述弯折段350的弯曲曲率为第一曲率。
本实施例中，所述粘结材料层330包括第一保护膜331、第二保护膜332及位于所述第一保护膜331与所述第二保护膜332之间的胶膜主体340，具体请参阅图6。
本实施例中，所述第一治具510包括第一凸部511，所述第一凸部511对应所述第一折叠区110，所述第一折叠区110对应所述弯折段350，具体请参阅图9。
本实施例中，所述第一治具510包括第一凸部511及第二凸部；所述粘结层300还包括与所述第一折叠区110对应的第二折叠区130，所述第二折叠区130内的膜层与所述第一折叠区110内的膜层的弯折方向相同。所述第一凸部511对应所述第一折叠区110，所述第二凸部对应所述第二折叠区130。
本实施例中，所述将所述粘结材料层330放置于第一治具510上进行弯折的步骤包括：
S120a、将所述粘结材料层330放置于所述第一治具510上。
S120b、对所述粘结材料层330加热，同时对所述粘结材料层330进行弯折。
本实施例中，所述对所述粘结材料层330加热的步骤的方式可以一边弯折一变加热，也可以先加热后弯折，也可以先弯折后加热。上述步骤S120b仅以一边弯折一变加热举例。
本实施例中，所述加热温度可以为50℃~80℃，加热所述粘结材料层330，可以加快所述胶膜主体340的内应力去除，加快所述粘结层300的形成。
本实施例中，所述对所述粘结材料层330加热的步骤，包括：
S120c、对所述粘结材料层330以第一升温速率从第一温度加热至第二温度。
S120d、对所述粘结材料层330以第二升温速率从所述第二温度加热至第三温度。
本实施例中，通过程序升温，以提高胶膜主体340的内应力去除的速率，加快所述粘结层300的形成。
本实施例中，所述第一升温速率大于所述第二升温速率。采取先快后慢的加热方式，在后慢的升温过程中，有利于胶膜主体340的内应力去除，不影响胶材的形成速率。
本实施例中，所述将所述粘结材料层330放置于第一治具510上进行弯折的步骤还可以包括：
S120α、在所述粘结材料层330上施加惰性气体。
本实施例中，在所述粘结材料层330上施加惰性气体，可以增加所述粘结材料层330与所述第一治具510的贴合，有利于所述第一折叠区110的形成，所述惰性气体的压力可以大于一个大气压，具体的气压可以根据不同工艺设定。
S120β、将所述粘结材料层330放置于所述第一治具510上保持第一时间，所述第一时间大于24小时。
本实施例中，由于所述胶膜主体340本身为粘弹材料，在第一治具510上初步变形时胶膜主体340还存在内应力，但由于应力松弛的现象存在，胶膜主体340内应力会逐步消失，所以静置步骤可以进一步消除内应力，得到满足弯曲且无内应力的膜材。
本实施例中，步骤S120包括：
S121、将所述粘结材料层330放置于所述第一治具510上，所述第一治具510位于靠近所述第一保护膜331一侧，具体请参阅图6。
S122、去除所述第二保护膜332，具体请参阅图6、图7。
本实施例中，去除所述第二保护膜332可以充分对所述胶膜主体340进行弯折，使所述胶膜主体340可以在弯折状态下的内应力变为零，方便所述胶膜主体340在显示面板100中的应用，有效缓解粘结层300的弯折应力，延长粘结层300的寿命，提高显示面板100可靠性。
本实施例中，步骤S122之后，还可以包括：
S123、在所述胶膜主体340远离所述第一保护膜331一侧形成第三保护膜333，具体请参阅图8。
本实施例中，所述第三保护膜333可以保护所述胶膜主体340，方便所述粘结层300进行移动等操作。应力消失后的胶膜主体340再进行覆膜操作，就可以得到满足弯曲且无内应力的状态的粘结层300。
本实施例中，所述第三保护膜333为整层设置。所述第三保护膜333的可以提供所述胶膜主体340以保护作用，同时有塑形的效果。
本实施例中，步骤S123可以省略，直接进行S124。
S124、将所述第一保护膜331及所述胶膜主体340在所述第一治具510上进行弯折，使所述弯折段350的弯曲曲率为所述第一曲率。
S130、将所述粘结材料层330与所述第一治具510分离，得到所述粘结层300，具体请参阅图9。
本实施例中，经过步骤S100后，所述粘结层300静置时的弯曲曲率为所述第一曲率，此时，所述粘结层300的内应力为零，即在后续进行所述粘结层300与其他膜层进行贴合前，所述粘结层300已经是具有弯曲曲率的弯折的形状。
S200、提供一第一膜层200，将所述第一膜层200与所述粘结层300的第一表面310贴合，形成复合膜层，具体请参阅图10。
本实施例中，步骤S200包括：
S210、将所述第一膜层200放置于第二治具上进行弯折，所述第二治具包括与所述第一曲率对应的凸起。
本实施例中，所述第一膜层200包括与所述第一曲率对应的弯折的区域，即所述第一膜层200包括与所述粘结层300的所述弯折段350对应的弯折的区域，具体请参阅图10。在所述第一膜层200与所述粘结层300贴合时，所述粘结层300的两表面的切向力为零，所述粘结层的内应力为零。
S220、将所述粘结层300的第一表面310与所述第一膜层200贴合，形成复合膜层。
本实施例中，步骤S220包括：
S221、去除所述粘结层300的第一保护膜331，使所述胶膜主体340裸露。
S222、将所述胶膜主体340的第一表面310与所述第一膜层200贴合，形成复合膜层。
本实施例中，形成的所述复合膜层的弯折的区域的弯曲曲率为所述第一曲率，所述复合膜层的内应力为零。所述粘结层300的第一表面310受到所述第一膜层200的第一切向力为零，与所述第一表面310相对应的所述粘结层300的第二表面320受到的第二切向力为零，具体请参阅图10。
S300、将所述复合膜层设置为展平状态，以及在所述粘结层300远离所述第一膜层200一侧的第二表面320上形成第二膜层400，所述复合膜层及所述第二膜层400形成的构件的曲率为第二曲率，所述第一曲率大于所述第二曲率，具体请参阅图11。
本实施例中，图10中的弯曲曲率为第一曲率，图12中的弯曲曲率为第二曲率。
本实施例中，步骤S300包括：
S310、将所述第三保护膜333去除。
本实施例中，当所述粘结层300包括所述第三保护膜333时，在所述第二膜层400贴合前，需要将所述第三保护膜333去除，以使所述胶膜主体340裸露，提高所述粘结层300与所述第二膜层400之间的粘结力。
S320、将所述复合膜层设置为展平状态，具体请参阅图11。
本实施例中，所述第二膜层400是将所述复合膜层放置于展平状态进行贴合的，可以缓解所述第二膜层400与所述粘结层300之间在弯折时的相互作用力，提高所述粘结层300的使用寿命。
S330、在所述粘结层300远离所述第一膜层200一侧的第二表面320上形成第二膜层400，具体请参阅图11。
本实施例中，当所述显示面板100静置时，所述复合膜层及所述第二膜层400形成的构件的曲率为第二曲率，所述第一曲率大于所述第二曲率，具体请参阅图12。
本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
本发明实施例公开了一种显示面板及其制作方法；显示面板包括第一折叠区及位于第一折叠区两侧的非折叠区，第一折叠区内设置有第一膜层、第二膜层及位于第一膜层与第二膜层之间的粘结层；其中，粘结层包括与第一膜层接触的第一表面以及与第二膜层接触的第二表面，当显示面板为弯折状态时，第一表面受到第一膜层的第一切向力和第二表面受到第二膜层的第二切向力指向第一折叠区的中心；本发明实施例通过将粘结层提前弯折，与第一膜层弯折贴合，与第二膜层平面贴合，使粘结层表面受到相邻膜层的切向力指向第一折叠区的中心，在显示面板弯折时，避免粘结层表面被过度拉伸，可以有效缓解粘结层的弯折应力，延长粘结层的寿命，提高显示面板可靠性。
可以理解的是，对本领域普通技术人员来说，可以根据本申请的技术方案及其发明构思加以等同替换或改变，而所有这些改变或替换都应属于本申请所附的权利要求的保护范围。
Claims (20)
- 一种显示面板，其中，包括第一折叠区及位于所述第一折叠区两侧的非折叠区，所述第一折叠区内设置有第一膜层、第二膜层及位于所述第一膜层与所述第二膜层之间的粘结层；其中，所述粘结层包括与所述第一膜层接触的第一表面以及与所述第二膜层接触的第二表面，当所述显示面板为弯折状态时，所述第一表面受到所述第一膜层的第一切向力和所述第二表面受到所述第二膜层的第二切向力指向所述第一折叠区的中心。
- 根据权利要求1所述的显示面板，其中，当所述显示面板为弯折状态时，所述第一表面靠近所述第一折叠区的凹陷方向，所述第二表面靠近所述第一折叠区的凸出方向；当所述显示面板为展平状态时，所述第一表面的所述第一切向力指向所述第一折叠区的中心，所述第二表面的所述第二切向力为零。
- 根据权利要求2所述的显示面板，其中，当所述显示面板为弯折状态时，所述第二表面在所述第一表面上的正投影位于所述第一表面内；当所述显示面板为所述展平状态时，所述第一表面在所述第二表面上的正投影位于所述第二表面内。
- 根据权利要求2所述的显示面板，其中，当所述显示面板为弯折状态时或展平状态时，所述第一表面在所述第二表面上的正投影均位于所述第二表面内。
- 根据权利要求1所述的显示面板，其中，当所述显示面板静置时，所述显示面板的弯曲曲率大于零。
- 根据权利要求1所述的显示面板，其中，所述显示面板还包括与所述第一折叠区对应的第二折叠区，所述第二折叠区内的膜层与所述第一折叠区内的膜层的弯折方向相同。
- 根据权利要求1所述的显示面板，其中，所述粘结层包括胶膜主体，所述胶膜主体的材料为光学胶。
- 一种显示面板的制作方法，所述显示面板包括第一折叠区及位于所述第一折叠区两侧的非折叠区，其中，所述显示面板的制作方法包括：提供一粘结层，所述粘结层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段，所述弯折段的弯曲曲率为第一曲率；提供一第一膜层，将所述第一膜层与所述粘结层的第一表面贴合，形成复合膜层；将所述复合膜层设置为展平状态，以及在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层，所述复合膜层及所述第二膜层形成的构件的曲率为第二曲率，所述第一曲率大于所述第二曲率；其中，当所述显示面板为弯折状态时，所述第一表面受到所述第一膜层的第一切向力和所述第二表面受到所述第二膜层的第二切向力指向所述第一折叠区的中心。
- 根据权利要求8所述的显示面板的制作方法，其中，所述提供一粘结层，所述粘结层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段，所述弯折段的弯曲曲率为第一曲率的步骤，包括：提供一粘结材料层，所述粘结材料层包括与所述第一折叠区对应的弯折段及与所述非折叠区对应的第一段及第二段；将所述粘结材料层放置于第一治具上进行弯折，使所述弯折段的弯曲曲率为第一曲率；将所述粘结材料层与所述第一治具分离，得到所述粘结层。
- 根据权利要求9所述的显示面板的制作方法，其中，所述粘结材料层包括第一保护膜、第二保护膜及位于所述第一保护膜与所述第二保护膜之间的胶膜主体，所述将所述粘结材料层放置于第一治具上进行弯折，使所述弯折段的弯曲曲率为第一曲率的步骤，包括：将所述粘结材料层放置于所述第一治具上，所述第一治具位于靠近所述第一保护膜一侧；去除所述第二保护膜；将所述第一保护膜及所述胶膜主体在所述第一治具上进行弯折，使所述弯折段的弯曲曲率为所述第一曲率。
- 根据权利要求10所述的显示面板的制作方法，其中，所述去除所述第二保护膜的步骤之后，还包括：在所述胶膜主体远离所述第一保护膜一侧形成第三保护膜。
- 根据权利要求11所述的显示面板的制作方法，其中，所述将所述复合膜层设置为展平状态，以及在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层的步骤包括：将所述第三保护膜去除；将所述复合膜层设置为展平状态；在所述粘结层远离所述第一膜层一侧的第二表面上形成第二膜层。
- 根据权利要求9所述的显示面板的制作方法，其中，所述将所述粘结材料层放置于第一治具上进行弯折的步骤，包括：将所述粘结材料层放置于所述第一治具上；对所述粘结材料层加热，同时对所述粘结材料层进行弯折。
- 根据权利要求13所述的显示面板的制作方法，其中，所述加热温度为50℃至80℃。
- 根据权利要求14所述的显示面板的制作方法，其中，所述对所述粘结材料层加热的步骤包括：对所述粘结材料层以第一升温速率从第一温度加热至第二温度；对所述粘结材料层以第二升温速率从所述第二温度加热至第三温度。
- 根据权利要求15所述的显示面板的制作方法，其中，所述第一升温速率大于所述第二升温速率。
- 根据权利要求13所述的显示面板的制作方法，其中，所述第一治具包括第一凸部，所述第一凸部对应所述第一折叠区，所述第一折叠区对应所述弯折段。
- 根据权利要求13所述的显示面板的制作方法，其中，所述显示面板还包括与所述第一折叠区对应的第二折叠区，所述第二折叠区内的膜层与所述第一折叠区内的膜层的弯折方向相同。
- 根据权利要求18所述的显示面板的制作方法，其中，所述第一治具包括第一凸部及第二凸部；所述第一凸部对应所述第一折叠区，所述第二凸部对应所述第二折叠区。
- 根据权利要求9所述的显示面板的制作方法，其中，所述将所述粘结材料层放置于第一治具上进行弯折的步骤还包括：在所述粘结材料层上施加惰性气体；将所述粘结材料层放置于所述第一治具上保持第一时间。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/434,723 US12008930B2 (en) | 2021-05-08 | 2021-06-08 | Display panel and manufacturing method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110500590.4 | 2021-05-08 | ||
| CN202110500590.4A CN113299188B (zh) | 2021-05-08 | 2021-05-08 | 显示面板及其制作方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022236904A1 true WO2022236904A1 (zh) | 2022-11-17 |
Family
ID=77321840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2021/098963 WO2022236904A1 (zh) | 2021-05-08 | 2021-06-08 | 显示面板及其制作方法 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113299188B (zh) |
| WO (1) | WO2022236904A1 (zh) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140355195A1 (en) * | 2013-06-03 | 2014-12-04 | Samsung Display Co., Ltd. | Foldable display device |
| CN106652802A (zh) * | 2017-02-27 | 2017-05-10 | 上海天马微电子有限公司 | 一种可折叠显示装置 |
| CN108773142A (zh) * | 2018-06-08 | 2018-11-09 | 京东方科技集团股份有限公司 | 可折叠显示面板及其贴合方法和贴合装置 |
| CN110189638A (zh) * | 2019-06-28 | 2019-08-30 | 武汉天马微电子有限公司 | 显示模组及显示装置 |
| CN110992838A (zh) * | 2020-01-03 | 2020-04-10 | 武汉华星光电半导体显示技术有限公司 | 可折叠显示装置及其制造方法 |
| CN111105715A (zh) * | 2020-01-03 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | 可折叠显示装置及其制备方法、治具 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7622185B2 (en) * | 2005-04-15 | 2009-11-24 | Nitto Denko Corporation | Protective cover sheet comprising a UV-absorbing layer for a polarizer plate and method of making the same |
| US8220659B2 (en) * | 2009-03-16 | 2012-07-17 | Kimberly-Clark Worldwide, Inc. | Facial tissue product with a clip riser |
| FR2965398B1 (fr) * | 2010-09-23 | 2012-10-12 | Soitec Silicon On Insulator | Procédé de collage par adhésion moléculaire avec réduction de desalignement de type overlay |
| TW201249649A (en) * | 2011-06-08 | 2012-12-16 | Metal Ind Res & Dev Ct | A hard board pasting method and a coating module thereof |
| JP2015190863A (ja) * | 2014-03-28 | 2015-11-02 | 日本写真印刷株式会社 | 圧力検出装置 |
| KR102305461B1 (ko) * | 2014-11-26 | 2021-09-27 | 삼성디스플레이 주식회사 | 곡면 표시 장치 |
| CN104742482B (zh) * | 2015-03-31 | 2017-07-28 | 牧东光电科技有限公司 | 曲面触摸屏的预弯曲贴合方法 |
| US10286631B2 (en) * | 2015-06-03 | 2019-05-14 | Precision Glass Bending Corporation | Bent, veneer-encapsulated heat-treated safety glass panels and methods of manufacture |
| US20180329239A1 (en) * | 2015-11-19 | 2018-11-15 | Sakai Display Products Corporation | Display device and method for producing display device |
| KR102480086B1 (ko) * | 2016-01-11 | 2022-12-23 | 삼성디스플레이 주식회사 | 디스플레이 장치 및 그 제조방법 |
| CN106228910B (zh) * | 2016-09-26 | 2020-03-24 | 京东方科技集团股份有限公司 | 柔性显示面板及其制造方法以及柔性显示装置 |
| CN106530973B (zh) * | 2016-12-21 | 2019-06-11 | 上海天马微电子有限公司 | 一种曲面显示装置 |
| CN107425142B (zh) * | 2017-04-27 | 2019-08-02 | 京东方科技集团股份有限公司 | 一种柔性显示装置的制备方法及柔性显示装置 |
| CN107908308B (zh) * | 2017-11-10 | 2020-03-27 | 武汉华星光电半导体显示技术有限公司 | 柔性显示模组及其制作方法 |
| JP2019096393A (ja) * | 2017-11-17 | 2019-06-20 | 株式会社Ｊｏｌｅｄ | 発光パネル、発光装置および電子機器 |
| CN108417608B (zh) * | 2018-03-28 | 2021-03-09 | 上海天马微电子有限公司 | 一种柔性显示面板及显示装置 |
| CN108710454A (zh) * | 2018-08-02 | 2018-10-26 | 广州视源电子科技股份有限公司 | 电容屏贴合方法和装置 |
| CN209149719U (zh) * | 2018-12-28 | 2019-07-23 | 北京小米移动软件有限公司 | 一种显示屏和电子设备 |
| CN110148358B (zh) * | 2019-06-28 | 2022-01-28 | 京东方科技集团股份有限公司 | 柔性屏的贴合治具和柔性屏的贴合方法 |
| JP2021061141A (ja) * | 2019-10-04 | 2021-04-15 | 日東電工株式会社 | 表示装置及び基材積層体 |
-
2021
- 2021-05-08 CN CN202110500590.4A patent/CN113299188B/zh active Active
- 2021-06-08 WO PCT/CN2021/098963 patent/WO2022236904A1/zh active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140355195A1 (en) * | 2013-06-03 | 2014-12-04 | Samsung Display Co., Ltd. | Foldable display device |
| CN106652802A (zh) * | 2017-02-27 | 2017-05-10 | 上海天马微电子有限公司 | 一种可折叠显示装置 |
| CN108773142A (zh) * | 2018-06-08 | 2018-11-09 | 京东方科技集团股份有限公司 | 可折叠显示面板及其贴合方法和贴合装置 |
| CN110189638A (zh) * | 2019-06-28 | 2019-08-30 | 武汉天马微电子有限公司 | 显示模组及显示装置 |
| CN110992838A (zh) * | 2020-01-03 | 2020-04-10 | 武汉华星光电半导体显示技术有限公司 | 可折叠显示装置及其制造方法 |
| CN111105715A (zh) * | 2020-01-03 | 2020-05-05 | 武汉华星光电半导体显示技术有限公司 | 可折叠显示装置及其制备方法、治具 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113299188A (zh) | 2021-08-24 |
| US20240021112A1 (en) | 2024-01-18 |
| CN113299188B (zh) | 2022-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021017714A1 (zh) | 柔性显示面板的贴合工装及贴合方法 | |
| WO2021109364A1 (zh) | 盖板、盖板的制备方法和显示装置 | |
| JP5644129B2 (ja) | 強化板ガラス及びその製造方法 | |
| JP6373495B2 (ja) | ガラス板用の曲げ工具 | |
| WO2020124857A1 (zh) | 显示屏和显示屏的制作方法 | |
| CN110605848A (zh) | 曲面屏的贴合装置及方法 | |
| WO2023102967A1 (zh) | 显示面板及显示装置 | |
| JP2003066858A (ja) | 薄膜デバイス基板の製造方法 | |
| WO2022236904A1 (zh) | 显示面板及其制作方法 | |
| WO2003090993A1 (fr) | Procede pour former une lentille composite | |
| US12008930B2 (en) | Display panel and manufacturing method thereof | |
| CN215970559U (zh) | 一种玻璃盖板贴合滚轮结构 | |
| JP2017092791A (ja) | 複合基板の製造方法 | |
| CN111223810A (zh) | 一种晶圆键合加压装置、晶圆键合的方法及晶圆键合设备 | |
| WO2020124810A1 (zh) | 柔性显示屏及其制作方法 | |
| JP2017079439A (ja) | 複合基板の製造方法 | |
| TWI819603B (zh) | 凹面貼合方法 | |
| TW201250297A (en) | Optical composite substrate | |
| JP2008156135A (ja) | 合わせガラスの製造方法 | |
| JP2008288663A (ja) | スピーカ用振動板の製造方法 | |
| WO2022078101A1 (zh) | 复合板材及其制备方法、壳体组件和电子设备 | |
| JP2005258065A (ja) | 偏光板の製造方法および粘着装置 | |
| TWI276535B (en) | Film attaching method and screen of rear projection television | |
| WO2021045089A1 (ja) | 有機ｅｌパネル | |
| JPS59140422A (ja) | フレキシブル液晶表示素子の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 17434723 Country of ref document: US |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21941473 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 21941473 Country of ref document: EP Kind code of ref document: A1 |