CN115064079A - Curved surface display device and preparation method thereof - Google Patents
Curved surface display device and preparation method thereof Download PDFInfo
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- CN115064079A CN115064079A CN202210806784.1A CN202210806784A CN115064079A CN 115064079 A CN115064079 A CN 115064079A CN 202210806784 A CN202210806784 A CN 202210806784A CN 115064079 A CN115064079 A CN 115064079A
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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
- 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
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Abstract
The embodiment of the invention discloses a curved surface display device and a preparation method thereof, wherein the curved surface display device is provided with a plane area and a curved surface area, the curved surface area is provided with a transition area and an ink area, and the curved surface display device comprises: display panel, transparent adhesive layer, apron and fixed module. The fixed module is arranged on a non-light-emitting surface of the display panel and covers the plane area and the curved area, and the fixed module comprises an adhesive layer. The bonding layer is arranged around the display panel and the edge of the transparent adhesive layer and is arranged in the ink area. The bubble of arranging of curved surface laminating is from the centre to both sides, sets up the bond line through the transparent adhesive layer in printing ink district and display panel edge, and the bubble is accumulated easily to the bond line when the bubble of exhausting, and the bond line is located under the printing ink district, and the printing ink district is not only non-display area but also shelters from the district, does not influence curved surface display device's display effect.
Description
Technical Field
The invention relates to the field of display panels, in particular to a curved surface display device and a preparation method thereof.
Background
In the modern communication industry, the market demands of products such as mobile phones, televisions, flat panels, notebooks, digital cameras and the like are increasingly greater, and various display equipment forms are no longer restricted by planes but enter the army towards forms such as curved surfaces, cambered surfaces, four curved surfaces and the like. The development of the four curved surfaces can effectively overcome the problems of reduction of screen occupation ratio and the like caused by the four-side printing ink, and more layers are improved in the visual angle perception of a user, so that the display looks more scientific and unreal and in the future.
However, in the case where the OCA is not sufficiently viscous at the time of 3D bonding due to a problem of stiffness of each film material itself after the four-curved screen is bonded, bubbles appear in a partial region after the screen is left for a certain period of time.
In view of the above, there is a need to develop a novel curved display device to solve the problem of bubbles after the curved display device is left for a period of time in the prior art.
Disclosure of Invention
The embodiment of the invention provides a curved surface display device, which is used for solving the problem that bubbles appear after the curved surface display device is kept still for a period of time in the prior art.
In order to solve the above technical problem, the embodiment of the present invention discloses the following technical solutions:
in one aspect, a curved display device is provided, having a planar area and a curved area located on at least one side of the planar area, the curved area having a transition area connected to the planar area and an ink area located away from the planar area, the curved display device comprising: the display panel extends from the plane area and is bent to the transition area, and the display panel is provided with a light emitting surface and a non-light emitting surface which are oppositely arranged; the transparent adhesive layer is arranged on the light emergent surface of the display panel, extends from the plane area and is bent to the transition area; the cover plate is arranged on one side, far away from the display panel, of the transparent adhesive layer, extends from the plane area and is bent to the ink area; the fixing module is arranged on the non-light-emitting surface of the display panel and covers the plane area and the curved surface area, and the fixing module comprises an adhesive layer; the adhesive layer is arranged around the display panel and the edges of the transparent adhesive layer and is positioned in the ink area.
In addition to or in lieu of one or more of the features disclosed above, the ink zone is connected to the transition zone.
In addition to or in lieu of one or more of the features disclosed above, the adhesive layer is disposed between the display panel and the transparent adhesive layer such that subsequently-vented air bubbles accumulate in the adhesive layer.
In addition or alternatively to one or more features disclosed above, the securing module further comprises: the filling layer is arranged on the non-light-emitting surface of the display panel; the display panel is bent from the plane area to the curved area to form a groove, the filling layer is filled in the groove, and one side, far away from the display panel, of the filling layer is a plane.
In addition or alternatively to one or more features disclosed above, the fixed die set further comprises: and the fixing layer is arranged on one side of the plane of the filling layer, extends from the plane area to the ink area, and is positioned on one sides of the bonding layer and the filling layer, which are far away from the display panel.
In addition to or as an alternative to one or more of the features disclosed above, the fixing layer is conformed to the plane of the filling layer.
In addition to, or in the alternative to, one or more of the features disclosed above, the fixed die set is a one-piece, stacked structure; the fixed layer is made of hard materials. The filling layer is made of flexible materials, is fixed on the fixing layer and faces the non-light-emitting surface of the display panel; the adhesive layer is made of adhesive materials, is fixed on the fixing layer and faces the non-light-emitting surface of the display panel, and surrounds the filling layer.
In addition to or in lieu of one or more of the features disclosed above, the filler layer may employ one or more of latex or silicone.
In addition to, or in the alternative to, one or more of the features disclosed above, the anchoring layer is stainless steel. The fixing layer may also be made of other materials with a fixed shape, such as non-deformable steel and glass, which are not limited herein. In this embodiment, the fixing layer is made of martensitic stainless steel, and is not easy to deform and plays a fixing role.
Because the fixing layer keeps continuous pressurization on the display panel, bubbles can be prevented from appearing in the film layer of the curved surface display device due to material stiffness.
In addition to one or more features disclosed above, or in the alternative, the adhesive layer has a tack greater than 1000gf/inch and less than 3000 gf/inch.
In addition to or in the alternative to one or more of the features disclosed above, the transparent adhesive layer has a tack greater than 1000gf/inch and less than 5000 gf/inch. Adopt the viscidity extremely strong the transparent adhesive layer can avoid display panel with produce the bubble between the apron.
In addition or alternatively to one or more of the features disclosed above, further comprising a polarizer disposed between the display panel and the transparent adhesive layer; the back plate is arranged between the display panel and the filling layer.
In addition to or as an alternative to one or more of the above-mentioned disclosed features, the transparent adhesive layer is made of an OCA adhesive material, and the OCA adhesive material includes at least one or more of an acrylic OCA adhesive material, a polyurethane OCA adhesive material, and a silicone OCA adhesive material.
In addition to or in lieu of one or more of the features disclosed above, the OCA glue may be cured by uv light irradiation, natural curing, or by heating, pressing, etc.
The material of the transparent adhesive layer needs to have higher transmittance, cleanliness, adhesion and flatness, so the transparent adhesive layer adopts OCA (optically Clear adhesive).
In addition to or in the alternative to one or more of the features disclosed above, the clear adhesive layer has a thickness of greater than or equal to 25 micrometers and less than or equal to 250 micrometers.
In addition to or in lieu of one or more of the features disclosed above, the clear adhesive layer has a light transmission of greater than 99%.
In addition to or in lieu of one or more of the features disclosed above, the cover plate has a light transmission of greater than 99%.
In another aspect, there is provided a method for manufacturing the curved display device according to the present application, the curved display device having a planar area and a curved area on at least one side of the planar area, the curved area having a transition area connected to the planar area and an ink area away from the planar area, the method comprising the steps of: providing a display panel, wherein the display panel is provided with a light emergent surface and a non-light emergent surface which are oppositely arranged; preparing a transparent adhesive layer on the light-emitting surface of the display panel; providing a cover plate, extending from the plane area and bending to the ink area, attaching the display panel to the cover plate through the transparent adhesive layer, and extending and bending the display panel and the transparent adhesive layer from the plane area to the transition area; preparing a fixed module, wherein the fixed module comprises an adhesive layer; and mounting the fixing module to the non-light-emitting surface of the display panel to cover the planar area and the curved area, wherein the bonding layer surrounds the edges of the display panel and the transparent adhesive layer and is positioned in the ink area.
In addition to or in lieu of one or more of the features disclosed above, the display panel and the layer of transparent glue are provided in a planar shape.
In addition or alternatively to one or more of the features disclosed above, in the step of preparing a fixed die set, the fixed die set further includes a fixed layer and a filling layer; the filling layer is fixed on the non-light-emitting surface of the display panel on the fixing layer; the bonding layer is fixed on the fixing layer and faces the non-light-emitting surface of the display panel, and the bonding layer surrounds the filling layer; in the step of mounting the fixing module on the non-light-emitting surface of the display panel, the filling layer is filled in a groove formed by bending the display panel from the planar area to the curved area; the fixing layer extends from the plane area to the ink area and forms a closed connection with the cover plate.
One of the above technical solutions has the following advantages or beneficial effects: the bubble of arranging of curved surface laminating is from the centre to both sides, sets up the bond line through the transparent adhesive layer in printing ink district and display panel edge, and the bubble is accumulated easily to the bond line when the bubble of exhausting, and the bond line is located under the printing ink district, and the printing ink district is not only non-display area but also shelters from the district, does not influence curved surface display device's display effect.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic structural diagram of a curved display device according to an embodiment of the present invention;
FIG. 2 is a flowchart of a method for manufacturing a curved display device according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of step 1 of the preparation method according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of step 2 of the preparation method according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of step 3 of the preparation method according to the embodiment of the present invention;
FIG. 6 is a schematic structural diagram of step 4 of the preparation method according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of step 5 of the preparation method according to the embodiment of the present invention.
Reference numerals:
curved display device-100; a planar area-11;
curved surface zone-12; transition zone-121;
ink zone-122; a display panel-20;
a transparent adhesive layer-30; a cover plate-40;
adhesive layer-50; a filling layer-60;
-70, a fixing layer; a groove-21;
a polarizer-80; -a back plate-90;
a fixed module-55.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a curved display device 100. The curved display device 100 has a flat area 11 and a curved area 12, and includes a display panel 20, a transparent adhesive layer 30, a cover plate 40 and a fixing module 55. The fixing module 55 includes an adhesive layer 50.
The curved surface area 12 is located at both sides of the planar area 11, and the curved surface area 12 is generally an edge curved surface with a certain curvature in the curved display device 100. The embodiment in the present application has been described by taking an example in which the curved surface display device 100 has curved surfaces on both sides in the width direction, but the present invention is not limited thereto, and the curved surface display device 100 may be a four-curved surface display device 100 or the like. The curved display device 100 may also be provided with the curved area 12 on at least one side of the flat area 11, which is not limited in this application.
The curved region 12 has a transition region 121 and an ink region 122. The transition area 121 is connected to the planar area 11, the ink area 122 is located on the side of the transition area 121 away from the planar area 11, and the ink area 122 is connected to the transition area 121. The curved display device 100 has a front display area and a side display area, the planar area 11 is the front display area, the transition period is the side display area, and the ink area 122 is the non-display area.
The display panel 20 extends from the planar area 11 and bends to the transition area 121, and the display panel 20 in this application is a flexible display panel 20, so that it can be bent to the same shape as the cover 40 to improve the flatness and display quality of the display panel 20. The display panel 20 has a light emitting surface (i.e., a front surface) and a non-light emitting surface (i.e., a back surface) opposite to each other.
The transparent adhesive layer 30 is disposed on the light emitting surface of the display panel 20, and extends from the planar area 11 and bends to the transition area 121. The cover plate 40 is disposed on a side of the transparent adhesive layer 30 away from the display panel 20, extends from the planar area 11 and is bent to the ink area 122, and the transparent adhesive layer 30 attaches the display panel 20 and the cover plate 40 together.
The cover plate 40 is disposed on a side of the transparent adhesive layer 30 away from the display panel 20, and is used for covering the transparent adhesive layer 30 and the display panel 20. The cover plate 40 should have a certain light transmittance. Illustratively, the light transmittance of the cover plate 40 is greater than 99% so that the display panel 20 can be observed to ensure the optical quality of the moving curve display device 100.
The cover 40 is a curved cover. The cover plate 40 may be made of polymethyl methacrylate (PMMA) or a composite plate. Illustratively, when the cover plate 40 is a plexiglas cover plate 40, the plexiglas cover plate 40 may be formed by hot bending; when the cover plate 40 is a composite plate cover plate 40, the composite plate cover plate 40 may be formed by injection molding or hot bending. Of course, the material of the cover plate 40 is not limited, and the material of the cover plate 40 may be plastic or the like.
The transparent Adhesive layer 30 is made of an Optically Clear Adhesive (Optically Clear Adhesive), and the Optically Clear Adhesive includes at least one or more of acrylic based OCA Adhesive, polyurethane based OCA Adhesive, and silicone based OCA Adhesive.
The OCA glue material can be cured by ultraviolet irradiation, natural curing, or heating, extrusion and the like. The thickness of the transparent adhesive layer 30 is greater than or equal to 25 micrometers and less than or equal to 250 micrometers. The light transmittance of the transparent adhesive layer 30 is greater than 99%. The material of the transparent adhesive layer 30 needs to have higher light transmittance, cleanliness, adhesion and flatness, so the transparent adhesive layer 30 adopts OCA.
The transparent adhesive layer 30 has a viscosity of more than 1000gf/inch and less than 5000 gf/inch. The transparent adhesive layer 30 with strong viscosity can prevent air bubbles from being generated between the display panel 20 and the cover plate 40.
The adhesive layer 50 is disposed around the edges of the display panel 20 and the transparent adhesive layer 30, and is disposed in the ink region 122. The adhesive layer 50 has a tack greater than 1000gf/inch and less than 3000 gf/inch. The adhesive layer 50 is provided at the edge positions of the display panel 20 and the transparent adhesive layer 30. Further, the adhesive layer 50 closely surrounds the edges of the display panel 20 and the transparent adhesive layer 30, so that air bubbles, which are subsequently discharged, are accumulated to the adhesive layer 50.
The specific principle is as follows: the curved surface attached bubble discharge is from the middle to both sides, the adhesive layer 50 is arranged on the transparent adhesive layer 30 of the ink area 122 and the edge of the display panel 20, bubbles are easy to accumulate on the adhesive layer 50 when the bubble discharge is performed, the adhesive layer 50 is located in the ink area 122, and the ink area 122 is not a display area but a shielding area, so that the display effect of the curved surface display device 100 is not affected.
In one embodiment, the fixing module further includes a filling layer 60 and a fixing layer 70.
The filling layer 60 is disposed on the non-light-emitting surface of the display panel 20. That is, the filling layer 60 is disposed on a side of the display panel 20 away from the cover plate 40. The display panel 20 is bent from the flat area 11 to the curved area 12 to form a groove, the notch of the groove faces to the side away from the cover plate 40, the filling layer 60 is filled in the groove, and the side of the filling layer 60 away from the display panel 20 is a plane.
It should be noted that, in this embodiment, the specific material of the filling layer 60 is not limited, and optionally, the material of the filling layer 60 needs to be a soft material that is easy to mold. On one hand, the filling layer 60 needs to support the flexible display panel 20 to prevent the flexible display panel 20 from being wrinkled after being bent, and therefore, the filling layer 60 needs to have a certain fixed shape. Optionally, the material of the filling layer 60 in this embodiment may include latex or silica gel. Silica gel or latex plasticity is strong, and can keep certain shape, can enough play the supporting role to flexible display panel 20, has certain elasticity again, and does not have sharp-pointed end, is difficult for causing the fish tail to other original papers of curved surface display device 100.
The fixing layer 70 is attached to the plane of the filling layer 60, extends from the plane area 11 to the ink area 122, and is located on the side of the adhesive layer 50 and the filling layer 60 away from the display panel.
The fixing layer 70 is made of stainless steel. The fixing layer 70 may be made of other materials that provide a fixed shape, such as non-deformable steel and glass, but not limited thereto. In this embodiment, the fixing layer 70 is made of martensitic stainless steel, which is not easily deformed and plays a fixing role. Since the fixing layer 70 keeps the display panel 20 continuously pressurized, it is ensured that there is no bubble in the film layer of the curved display device 100 due to material stiffness.
In one embodiment, the fixing module 55 is a one-piece stacked structure. The method comprises the following steps: the fixed layer 70 is a hard material. The filling layer 60 is a flexible material, and the filling layer 60 is fixed on the fixing layer 70 and faces the non-light-emitting surface of the display panel 20. The adhesive layer 50 is an adhesive material, the adhesive layer 50 is fixed on the fixing layer 70 and faces the non-light-emitting surface of the display panel 20, and the adhesive layer 50 surrounds the filling layer 60. When the fixing module 55 is mounted on the non-light-emitting surface of the display panel, the filling layer 60 is directly filled in the groove of the display panel 20; the adhesive layer 50 closely surrounds the edges of the display panel 20 and the transparent adhesive layer 30; the fixing layer 70 forms a closed connection with the cover 40, which may be a joint connection or a contact connection, or may be a fixed connection. This application adopts the fixed module 55 of integral type to install on display panel 20's non-plain noodles, can will fix module 55 and display panel 20 and apron 40 bonding together under vacuum environment through laminating technology, and on one side the pressfitting lets partial bubble can be saved in bonding layer 50 on one side in addition to realize the exhaust effect, improve display effect.
In one embodiment, the curved display device 100 further includes a polarizer 80 and a back plate 90.
The polarizer 80 is arranged between the display panel 20 and the transparent adhesive layer 30; the back sheet 90 is disposed between the display panel 20 and the filling layer 60.
The curved surface display device 100 provided in the embodiment of the present application may be any product or component having a display function, such as a mobile phone, a tablet computer, a digital photo frame, electronic paper, and a wearable device, and the specific form of the curved surface display device 100 is not particularly limited in the present application.
The curved surface attached bubble discharge is from the middle to both sides, the adhesive layer 50 is arranged on the transparent adhesive layer 30 of the ink area 122 and the edge of the display panel 20, bubbles are easy to accumulate on the adhesive layer 50 when the bubble discharge is performed, the adhesive layer 50 is located in the ink area 122, and the ink area 122 is not a display area but a shielding area, so that the display effect of the curved surface display device 100 is not affected.
Referring to fig. 2, fig. 2 is a flowchart of a manufacturing method for manufacturing the curved display device 100 according to the embodiment of the present application, where the manufacturing method includes steps 1 to 5.
Step 1: a display panel 20 is provided, wherein the display panel 20 has a light-emitting surface and a non-light-emitting surface disposed opposite to each other.
Referring to fig. 3, the display panel 20 is planar, and the display panel 20 is a flexible display panel 20, so that it can be bent.
The light-emitting surface of the display panel 20 is further provided with a polarizer 80, and the non-light-emitting surface of the display panel 20 is further provided with a back plate 90.
Step 2: the transparent adhesive layer 30 is disposed on the light-emitting surface of the display panel 20.
Referring to fig. 4, the transparent adhesive layer 30 is planar. Specifically, the transparent adhesive layer 30 is prepared on one side of the polarizer 80. The transparent Adhesive layer 30 is made of an Optically Clear Adhesive (Optically Clear Adhesive), and the Optically Clear Adhesive includes at least one or more of acrylic based OCA Adhesive, polyurethane based OCA Adhesive, and silicone based OCA Adhesive.
The OCA glue material can be cured by ultraviolet irradiation, natural curing, or heating, extrusion and the like. The thickness of the transparent adhesive layer 30 is greater than or equal to 25 micrometers and less than or equal to 250 micrometers. The light transmittance of the transparent adhesive layer 30 is greater than 99%. The material of the transparent adhesive layer 30 needs to have high transmittance, cleanliness, adhesion and flatness, so the transparent adhesive layer 30 adopts OCA.
The transparent adhesive layer 30 has a viscosity of more than 1000gf/inch and less than 5000 gf/inch. The transparent adhesive layer 30 with strong viscosity can prevent air bubbles from being generated between the display panel 20 and the cover plate 40.
And step 3: providing a cover plate 40 extending from the planar area 11 and bending to the ink area 122, attaching the display panel 20 to the cover plate 40 through the transparent adhesive layer 30, and extending and bending the display panel 20 and the transparent adhesive layer 30 from the planar area 11 to the transition area 121.
Referring to fig. 5, the cover 40 is disposed on the front surface of the display panel 20, and thus the cover 40 needs to have a certain transmittance. Illustratively, the light transmittance of the cover plate 40 is greater than 99%, so that the display panel 20 can be observed, and the moving curve display device 100 can be ensured to be used normally.
The cover plate 40 may be made of polymethyl methacrylate (PMMA) or a composite plate. Illustratively, when the cover plate 40 is a plexiglas cover plate 40, the plexiglas cover plate 40 may be formed by hot bending; when the cover plate 40 is a composite plate cover plate 40, the composite plate cover plate 40 may be formed by injection molding or hot bending. Of course, the material of the cover plate 40 is not limited, and the material of the cover plate 40 may be plastic or the like.
And 4, step 4: a fixing module 55 is prepared, and the fixing module 55 includes the adhesive layer 50.
Referring to fig. 6, the fixing module 55 further includes a fixing layer 70 and a filling layer 60; the filling layer 60 is fixed on the fixing layer 70 and faces the non-light-emitting surface of the display panel 20; the adhesive layer 50 is fixed on the fixing layer 70 and faces the non-light-emitting surface of the display panel 20, and the adhesive layer 50 surrounds the filling layer.
And 5: the fixing module 55 is mounted to the non-light-emitting surface of the display panel 20, covering the planar area 11 and the curved area 12, wherein the adhesive layer 50 surrounds the edges of the display panel 20 and the transparent adhesive layer 30, and is disposed in the ink area 122.
Referring to fig. 7, the adhesive layer 50 is disposed around the edges of the display panel 20 and the transparent adhesive layer 30 and disposed in the ink region 122. The adhesive layer 50 has a tack greater than 1000gf/inch and less than 3000 gf/inch. The adhesive layer 50 is provided at the front and rear ends of the display panel 20 and the transparent adhesive layer 30 such that air bubbles, which are subsequently discharged, are accumulated to the adhesive layer 50.
The curved surface attached bubble discharge is from the middle to both sides, and by arranging the adhesive layer 50 on the transparent adhesive layer 30 of the ink area 122 and the edge of the display panel 20, bubbles are easy to accumulate on the adhesive layer 50 when discharging bubbles, the adhesive layer 50 is located under the ink area 122, and the ink area 122 is not a display area but a shielding area, so that the display effect of the curved surface display device 100 is not affected.
The filling layer 60 is filled in a groove 21 formed by bending the display panel 20 from the planar area 11 to the curved area 12; the fixing layer 70 extends from the planar area 11 to the ink area 122 and forms a closed connection with the cover plate 20.
It should be noted that, in this embodiment, the specific material of the filling layer 60 is not limited, and optionally, the material of the filling layer 60 needs to be a soft material that is easy to mold. On one hand, the filling layer 60 needs to support the flexible display panel 20 to prevent the flexible display panel 20 from being wrinkled after being bent, and therefore, the filling layer 60 needs to have a certain fixed shape. Optionally, the material of the filling layer 60 in this embodiment may include latex or silica gel. Silica gel or latex plasticity is strong, and can keep certain shape, can enough play the supporting role to flexible display panel 20, has certain elasticity again, and does not have sharp-pointed end, is difficult for causing the fish tail to other original papers of curved surface display device 100.
The fixing layer 70 is made of stainless steel. The fixing layer 70 may be made of other materials that provide a fixed shape, such as non-deformable steel and glass, but not limited thereto. In this embodiment, the fixing layer 70 is made of martensitic stainless steel, which is not easy to deform and has a fixing effect. Since the fixing layer 70 keeps the display panel 20 continuously pressurized, it is ensured that there is no bubble in the film layer of the curved display device 100 due to material stiffness.
The curved surface display device and the manufacturing method thereof provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the embodiment of the invention, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A curved surface display device, characterized by that, has the plane district and is located the curved surface district of at least one side in plane district, the curved surface district have with the transition district that the plane district is connected with keep away from the printing ink district in plane district, curved surface display device includes:
the display panel extends from the plane area and is bent to the transition area, and the display panel is provided with a light emitting surface and a non-light emitting surface which are oppositely arranged;
the transparent adhesive layer is arranged on the light emergent surface of the display panel, extends from the plane area and is bent to the transition area;
the cover plate is arranged on one side, far away from the display panel, of the transparent adhesive layer, extends from the plane area and is bent to the ink area; and
the fixing module is arranged on the non-light-emitting surface of the display panel and covers the plane area and the curved surface area, and the fixing module comprises an adhesive layer;
the adhesive layer is arranged around the display panel and the edges of the transparent adhesive layer and is positioned in the ink area.
2. The curved display device of claim 1, wherein the fixing module further comprises:
the filling layer is arranged on the non-light-emitting surface of the display panel;
the display panel is bent from the plane area to the curved area to form a groove, the filling layer is filled in the groove, and one side, far away from the display panel, of the filling layer is a plane.
3. The curved display device of claim 2, wherein the fixing module further comprises:
and the fixing layer is arranged on one side of the plane of the filling layer, extends from the plane area to the ink area, and is positioned on one sides of the bonding layer and the filling layer, which are far away from the display panel.
4. The curved display device of claim 3, wherein the fixing module is a one-piece stacked structure;
the fixed layer is made of hard materials.
The filling layer is made of flexible materials, is fixed on the fixing layer and faces the non-light-emitting surface of the display panel;
the bonding layer is made of viscous materials, is fixed on the fixing layer and faces the non-light-emitting surface of the display panel, and surrounds the filling layer.
5. The curved display device of claim 4, wherein the filler layer is one or more of latex or silicone.
6. The curved display device of claim 4, wherein the fixed layer is stainless steel.
7. The curved display device according to claim 4, wherein the adhesive layer has a viscosity of more than 1000gf/inch and less than 3000 gf/inch.
8. The curved surface display device according to claim 1, wherein the transparent adhesive layer is made of an OCA adhesive material, and the OCA adhesive material comprises at least one or more of an acrylic OCA adhesive material, a polyurethane OCA adhesive material, and a silicone OCA adhesive material.
9. A method of manufacturing a curved display device according to any one of claims 1 to 8, said curved display device having a planar area and a curved area on at least one side of said planar area, said curved area having a transition area connected to said planar area and an ink area remote from said planar area, said method comprising the steps of:
providing a display panel, wherein the display panel is provided with a light emergent surface and a non-light emergent surface which are oppositely arranged;
preparing a transparent adhesive layer on the light-emitting surface of the display panel;
providing a cover plate, extending from the plane area and bending to the ink area, attaching the display panel to the cover plate through the transparent adhesive layer, and extending and bending the display panel and the transparent adhesive layer from the plane area to the transition area;
preparing a fixed module, wherein the fixed module comprises an adhesive layer;
and mounting the fixing module to the non-light-emitting surface of the display panel to cover the planar area and the curved area, wherein the bonding layer surrounds the edges of the display panel and the transparent adhesive layer and is positioned in the ink area.
10. The method according to claim 9,
in the step of preparing a fixed module, the fixed module further comprises a fixed layer and a filling layer; the filling layer is fixed on the non-light-emitting surface of the fixing layer, and the non-light-emitting surface faces the display panel; the bonding layer is fixed on the fixing layer and faces the non-light-emitting surface of the display panel, and the bonding layer surrounds the filling layer;
in the step of mounting the fixing module on the non-light-emitting surface of the display panel, the filling layer is filled in a groove formed by bending the display panel from the planar area to the curved area; the fixing layer extends from the plane area to the ink area and forms a closed connection with the cover plate.
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| CN115064079B (en) | 2023-12-01 |
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