WO2021248541A1 - 柔性显示面板及其制备方法、柔性显示装置 - Google Patents
柔性显示面板及其制备方法、柔性显示装置 Download PDFInfo
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- WO2021248541A1 WO2021248541A1 PCT/CN2020/096949 CN2020096949W WO2021248541A1 WO 2021248541 A1 WO2021248541 A1 WO 2021248541A1 CN 2020096949 W CN2020096949 W CN 2020096949W WO 2021248541 A1 WO2021248541 A1 WO 2021248541A1
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- flexible display
- adhesive layer
- buffer material
- display panel
- bending area
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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
Definitions
- This application relates to the field of display, in particular to a display panel, a manufacturing method thereof, and a flexible display device.
- FIG. 1 is a schematic diagram of the structure of the existing bending screen.
- the material of the first adhesive layer 130 is an organic adhesive material.
- the viscosity between the first adhesive layer 130 and the back plate 120 is relatively small, and the bending coefficients of the back plate 120 and the metal plate 140 are different. Therefore, when the screen When the number of times of bending reaches a certain value, the metal plate 140 is likely to peel off from the first adhesive layer 130.
- the existing flexible display device has the problem of peeling of the metal plate in the bending area, which needs to be solved.
- the present application provides a flexible display panel, a preparation method thereof, and a flexible display device, so as to improve the problem of peeling of the metal plate in the bending area of the existing flexible display device.
- the application provides a flexible display module, which includes:
- the back plate is located in the non-bending area, and is used to support the flexible display panel in the non-bending area;
- the buffer material layer is located in the bending area and is arranged on the same layer as the back plate;
- One side of the first adhesive layer is bonded to the back plate and the buffer material layer, and the other side of the first bonding layer is bonded to the metal plate.
- the thickness of the buffer material layer is the same as the thickness of the back plate.
- the material of the buffer material layer is different from the material of the first adhesive layer.
- the material of the buffer material layer includes rubber and polymer resin.
- the material of the buffer material layer is the same as the material of the first adhesive layer.
- the material of the first adhesive layer is optical glue.
- the buffer material layer and the first adhesive layer are integrally formed.
- the buffer material layer and the first adhesive layer are formed separately.
- the present application provides a method for manufacturing a flexible display module, and the manufacturing method includes:
- a backplane, a buffer material layer, a first adhesive layer, and a metal plate are sequentially prepared under the flexible display panel;
- the backplane is located in the non-bending area and is used to support the The flexible display panel;
- the buffer material layer is located in the bending area and is provided in the same layer as the back plate; one side of the first adhesive layer is bonded to the back plate and the buffer material Layer, the other side of the first bonding layer is bonded to the metal plate;
- a polarizer, a second adhesive layer, and a cover plate are sequentially prepared on the flexible display panel.
- the step of sequentially preparing a backplane, a first adhesive layer, and a metal plate under the flexible display panel includes:
- a metal plate is prepared under the first adhesive layer.
- the step of preparing a backplane under the flexible display panel in the non-bending area includes:
- the back plate in the bending area is removed, and the back plate in the non-bending area is retained.
- the step of preparing the first adhesive layer under the flexible display panel and under the back plate in the bending area includes:
- the first bonding portion of the first bonding layer is prepared under the flexible display panel
- a second adhesive part of the first adhesive layer is prepared.
- the step of preparing the first adhesive layer under the flexible display panel and under the back plate in the bending area includes:
- the first adhesive layer is attached; the first adhesive layer is connected to the flexible display panel in the bending area , And the backplane is bonded together.
- the present application also provides a flexible display device, which includes the flexible display module as described above, and the flexible display module includes:
- the back plate is located in the non-bending area, and is used to support the flexible display panel in the non-bending area;
- the buffer material layer is located in the bending area and is arranged on the same layer as the back plate;
- One side of the first adhesive layer is bonded to the back plate and the buffer material layer, and the other side of the first bonding layer is bonded to the metal plate.
- the thickness of the buffer material layer is the same as the thickness of the back plate.
- the material of the buffer material layer is different from the material of the first adhesive layer.
- the material of the buffer material layer is the same as the material of the first adhesive layer.
- the material of the first adhesive layer is optical glue.
- the buffer material layer and the first adhesive layer are integrally formed.
- the buffer material layer and the first adhesive layer are formed separately.
- the present application provides a flexible display module, a preparation method thereof, and a flexible display device.
- the flexible display module includes: a flexible display panel; a backplane, a buffer material layer, and a first adhesive layer sequentially arranged under the flexible display panel , And a metal plate; a polarizer, a second adhesive layer, and a cover plate arranged in sequence on the flexible display panel; wherein the back plate is located in the non-bending area and is used to support the flexible display panel in the non-bending area;
- the buffer material layer is located in the bending area and is arranged on the same layer as the back plate; one side of the first adhesive layer is bonded to the back plate and the buffer material layer, and the other side of the first adhesive layer is bonded to the metal plate.
- a buffer material layer is provided in the bending area under the flexible display panel, and the backplane is replaced by a buffer material layer.
- the buffer material layer has better bending resistance performance than the backplane.
- FIG. 1 is a schematic diagram of the structure of a flexible display module in the prior art.
- FIG. 2 is a schematic diagram of the first structure of the flexible display module provided by an embodiment of the application in an unfolded state.
- FIG. 3 is a schematic diagram of the first structure of the flexible display module provided by an embodiment of the application in a bent state.
- FIG. 4 is a schematic diagram of the second structure of the flexible display module provided by an embodiment of the application in an unfolded state.
- FIG. 5 is a schematic diagram of the second structure of the flexible display module provided by an embodiment of the application in a bent state.
- FIG. 6 is a preparation flow chart of a flexible display module provided by an embodiment of the application.
- an embodiment of the present application provides a flexible display module to alleviate this problem.
- the flexible display module provided by the present application includes a bending area 201 and a non-bending area (202, 203). Within the bending 201, the flexible display module includes:
- the backplane 220, the buffer material layer 230, the first adhesive layer 240, and the metal plate 250 are sequentially disposed under the flexible display panel 210;
- the polarizer 260, the second adhesive layer 270, and the cover plate 280 are sequentially disposed on the flexible display panel;
- the back plate 220 is located in the non-bending area (202, 203), and is used to support the flexible display panel 210 in the non-bending area (202, 203); the buffer material layer 230 is located in the bending area 201, and the back plate 220 is arranged in the same layer; one side of the first bonding layer 240 is bonded to the backplane 220 and the buffer material layer 230, and the other side of the first bonding layer 240 is bonded to the metal plate 250.
- This embodiment provides a flexible display module.
- the flexible display module is provided with a back plate in the non-bending area under the flexible display panel, a buffer material layer is provided in the bending area, and a buffer material layer is provided under the back plate and the buffer material layer.
- Metal plate The back plate is replaced by a buffer material layer in the bending area. There is no difference in bending coefficient between the back plate and the metal plate.
- the buffer material layer has better bending resistance than the back plate.
- the flexible display panel 210 generally includes a flexible substrate, a driving circuit layer, and a light-emitting function layer.
- a flexible display panel in the prior art, which will not be described in detail here.
- the back plate 220 includes a first back plate 221 and a second back plate 222.
- the first back plate 221 is located in the non-bending area 202
- the second back plate 222 is located in the non-bending area 203
- the back plate 220 is generally a rigid substrate .
- the material can be inorganic materials, such as glass materials or metal materials (aluminum alloy, stainless steel, etc.), or organic materials, such as rigid plastics.
- the first adhesive layer 240 is used to bond the back plate 220 and the metal plate 250.
- the first adhesive layer 240 is generally an optical adhesive layer.
- the optical adhesive is colorless and transparent, has a light transmittance of more than 90%, and has good bonding strength. It can be cured at room temperature or medium temperature and has the characteristics of small shrinkage, and can effectively bond the back plate 220 and the metal plate 250 together.
- the material of the optical adhesive layer includes polymethyl methacrylate and epoxy acrylate.
- the metal plate 250 is used to strengthen the structure of the flexible display module and also to dissipate the heat of the display panel.
- the material of the metal plate 250 includes metal copper, aluminum alloy, stainless steel, and the like.
- the second adhesive layer 270 has the same function as the first adhesive layer 240, and is used to bond the polarizer 260 and the cover plate 280.
- the material of the second adhesive layer 270 is similar to the material of the first adhesive layer 240.
- the cover plate 280 is used to protect the flexible display panel 210 and isolate external water, oxygen, impurity particles, etc. from entering the flexible display module.
- the cover plate is generally glass or a transparent organic hard substrate.
- the buffer material layer 230 is made of a buffer material.
- the buffer material layer 230 is located in the bending area 201 between the first back plate 221 and the second back plate 222.
- the thickness of the buffer material layer 230 is the same as the thickness of the back plate 220.
- the material of the buffer material layer 230 is different from the material of the first adhesive layer 240, and the buffer material layer 230 is made of a material with buffering properties, which can effectively absorb and release bending stress.
- the material of the layer 230 includes, but is not limited to, polyurethane rubber, acrylic material, and epoxy material.
- the buffer material layer 230 and the first adhesive layer 240 are formed separately, that is, in the manufacturing process of the flexible display module, the buffer material layer 230 is prepared first, and then the first adhesive layer 240 is prepared. .
- the back plate in the bending area is replaced by the buffer material layer 230, so there is no difference in bending coefficient between the back plate and the metal plate in the bending area, and the buffer material layer 230 Using rubber or polymer resin organic materials, the adhesion to the first adhesive layer 240 is greater than the adhesion between the back plate 220 and the first adhesive layer 240.
- the buffer material layer 230 provides a buffer space for the bending stress, which relieves the metal plate and the back plate in the bending area in the prior art. The problem of peeling.
- the material of the buffer material layer 230 is different from the material of the first adhesive layer 240, and the buffer material layer 230 and the first adhesive layer 240 are formed separately.
- the buffer material layer 230 can be bent according to specific If necessary, it is prepared by selecting a material that meets the requirements of bending performance, and the buffer material layer 230 is formed separately, so that the preparation process is more controllable.
- the material of the buffer material layer (230, 430) is the same as the material of the first adhesive layer (240, 440).
- the buffer material layer (230, 430) is also an optical glue material, which has the function of bonding other film layers.
- the upper side of the buffer material layer (230, 430) is bonded to the flexible display panel 210, the lower side of the buffer material layer (230, 430) is bonded to the first adhesive layer (240, 440), and the buffer material layer (230, 430) is bonded to the first adhesive layer (240, 440).
- the left side of 430) is bonded to the first back plate 221, and the right side of the buffer material layer (230, 430) is bonded to the second back plate 222.
- the buffer material layer (230, 430) adopts the same optical adhesive material as the first adhesive layer 240, so that the buffer material layer (230, 430) and the flexible display panel 210 are between the buffer material layer (230, 430) and the first adhesive layer 240.
- (230, 430) and the first adhesive layer (240, 440) between the bonding performance is stronger, more conducive to prevent the buffer material layer (230, 430) and the flexible display panel 210, the buffer material layer (230) , 430) and the first adhesive layer (240, 440) peel off each other; at the same time, as an organic material, optical glue has good fluidity and bending resistance.
- the buffer material layer (230, 430) provides a buffer space for bending stress, which more effectively alleviates the correlation between the metal plate and the back plate in the bending area in the prior art. The problem of peeling.
- the buffer material layer 230 and the first adhesive layer 240 are formed separately, that is, in the manufacturing process of the flexible display module, the buffer material layer 230 is prepared first, and then The first adhesive layer 240 is prepared.
- the buffer material layer 230 and the first adhesive layer 240 are formed separately, and the buffer material layer 230 is formed separately, which can be prepared by a suitable preparation process, which is more controllable.
- the buffer material layer 430 and the first adhesive layer 440 are integrally formed, that is, in the manufacturing process of the flexible display module, the buffer material layer 430 and the first adhesive layer 430 are simultaneously prepared.
- the preparation methods of the buffer material layer 430 and the first adhesive layer 440 include but are not limited to 3D printing, CNC (Computerized Numerical Control, computer numerical control technology) processing, etc.
- the present application provides a method for preparing a flexible display module for preparing the above-mentioned flexible display module.
- the preparation method includes:
- Step S601 preparing a flexible display panel
- Step S602 Prepare a back plate, a buffer material layer, a first adhesive layer, and a metal plate in sequence under the flexible display panel; the back plate is located in the non-bending area and is used to support the flexible display panel in the non-bending area; The material layer is located in the bending area and is provided on the same layer as the back plate; one side of the first adhesive layer is bonded to the back plate and the buffer material layer, and the other side of the first adhesive layer is bonded to the metal plate;
- step S603 a polarizer, a second adhesive layer, and a cover plate are sequentially prepared on the flexible display panel.
- This embodiment provides a method for preparing a flexible display module by preparing a backplane in the non-bending area under the flexible display panel, and preparing a buffer material layer in the bending area under the flexible display panel.
- the cushion material layer replaces the back plate, and there is no difference in bending coefficient between the back plate and the metal plate in the bending area. Compared with the back plate, the cushion material layer has better bending resistance.
- step S601 a flexible display panel is prepared.
- the existing technology can be used to prepare the flexible display panel, which is not limited here.
- Step S602 The step of sequentially preparing a backplane, a buffer material layer, a first adhesive layer, and a metal plate under the flexible display panel includes:
- Step S6021 preparing a backplane under the flexible display panel in the non-bending area, including: laminating the backplane under the flexible display panel; using a laser cutting process to face the backplane along the boundary line between the non-bending area and the bending area. The board is cut; the back board in the bending area is removed, and the back board in the non-bending area is retained.
- Step S6022 prepare a buffer material layer and a first adhesive layer under the display panel and the backplane.
- a buffer material layer is prepared in the bending area under the flexible display panel; the thickness of the buffer material layer is the same as the thickness of the backplane, and the upper surface of the buffer material layer is the same as the lower surface of the flexible display panel. The surfaces are in contact, the lower surface of the buffer material layer is flush with the lower surface of the back plate, and the left and right sides of the buffer material layer are in contact with the back plate respectively.
- the buffer material layer can be directly prepared in the bending area of the lower surface of the flexible display panel by inkjet printing, spraying or chemical vapor deposition, or it can be prepared first to the same size as the bending area. A buffer material layer with the same thickness as the backplane is then attached to the lower bending area of the flexible display panel. Then, under the buffer material layer and the back plate, paste the first adhesive layer.
- the buffer material layer and the first adhesive layer are prepared separately, that is, the buffer material layer is prepared in the folding area under the flexible display panel, and then the first adhesive layer is attached under the buffer material layer and the back plate.
- the layer and the buffer material layer are formed separately, and suitable technological means can be selected according to the material of the buffer material layer, and the preparation process is simpler and more controllable.
- the buffer material layer and the first adhesive layer are prepared by integral molding by means of 3D printing, CNC processing, etc.; the material of the buffer material layer and the first adhesive layer are the same, and the plane of the buffer material layer The size is the same as the plane size of the bending area.
- the thickness of the buffer material layer is the same as the thickness of the back plate.
- the position of the buffer material layer on the first adhesive layer is the corresponding folding area after the first adhesive layer is pasted on the back plate. s position. Then, under the flexible display panel in the bending area and under the back plate, the buffer material layer and the first adhesive layer are attached; in this process, it is necessary to pay attention to accurately align the buffer material layer with the bending area. Position to ensure that the buffer material layer can be accurately bonded to the lower surface of the flexible display panel in the bending area.
- the buffer material layer and the first adhesive layer need to be formed by integral molding first, and then aligned and bonded with the flexible display panel and the backplane, which requires higher precision in the manufacturing process.
- step S6023 a metal plate is prepared under the first adhesive layer, and the metal plate and the first adhesive layer are aligned and bonded.
- the present application also provides a flexible display device, the flexible display device includes a flexible display module, and the flexible display module includes:
- the back plate is located in the non-bending area and is used to support the flexible display panel in the non-bending area;
- the buffer material layer is located in the bending area and is arranged on the same layer as the back plate; one side of the first adhesive layer is bonded The back plate and the buffer material layer, and the other side of the first adhesive layer is bonded to the metal plate.
- the flexible display device includes a flexible display module.
- the flexible display module is provided with a back plate in a non-bending area under the flexible display panel, and a buffer material layer is provided in the bending area, A metal plate is arranged under the back plate and the buffer material layer; the buffer material layer is used to replace the back plate in the bending area, and there is no difference in bending coefficient between the back plate and the metal plate.
- the buffer material layer has a better performance than the back plate.
- the thickness of the buffer material layer is the same as the thickness of the back plate.
- the material of the buffer material layer is different from the material of the first adhesive layer.
- the material of the buffer material layer includes rubber and polymer resin.
- the material of the buffer material layer is the same as the material of the first adhesive layer.
- the material of the first adhesive layer is optical glue.
- the buffer material layer and the first adhesive layer are integrally formed.
- the buffer material layer and the first adhesive layer are formed separately.
- the embodiments of the present application provide a flexible display module and a preparation method thereof, and a flexible display device.
- the flexible display module includes: a flexible display panel; Connecting layer, and metal plate; the polarizer, the second adhesive layer, and the cover plate which are sequentially arranged on the flexible display panel; wherein, the back plate is located in the non-bending area and is used to support the non-bending area Flexible display panel; the buffer material layer is located in the bending area and is arranged on the same layer as the backplane; one side of the first adhesive layer is bonded to the backplane and the buffer material layer, and the other side of the first bonding layer is bonded to metal plate.
- the buffer material layer has better bending resistance performance.
- the existence of the buffer material layer can buffer the bending stress. This alleviates the problem of peeling between the metal plate and the back plate in the bending area in the prior art.
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Abstract
一种柔性显示模组及其制备方法、柔性显示装置，该柔性显示模组包括：柔性显示面板（210）；柔性显示面板（210）下的背板（220）、缓冲材料层（230）、第一粘接层（240）、金属板（250）；柔性显示面板（210）上的偏光片（260）、第二粘接层（270）、盖板（280）；背板（220）位于非弯折区(202，203)内，缓冲材料层（230）位于弯折区（201）内，与背板（220）同层设置；第一粘接层（240）一侧粘接背板（220）和缓冲材料层（230），另一侧粘接金属板（250）。
Description
本申请涉及显示领域，尤其涉及一种显示面板及其制备方法、柔性显示装置。
随着显示面板行业技术不断革新，柔性显示面板由于轻薄、可弯曲、可折叠、省电等众多优点，已经发展成为显示领域的重点技术之一。
柔性可饶式弯曲屏的弯曲寿命受显示模组叠构及材料的影响，请参照图1，图1为现有弯折屏的结构示意图，其中背板120和金属板140的材料均为硬性材料，第一粘接层130的材料为有机胶黏材料，第一粘接层130与背板120之间的粘性较小，背板120和金属板140的弯折系数存在差异，因此当屏幕发生弯折的次数达到一定数值时，金属板140就容易与第一粘接层130发生剥离。
因此，现有柔性显示器件存在弯折区内金属板剥离的问题，需要解决。
本申请提供一种柔性显示面板及其制备方法、柔性显示装置，以改进现有柔性显示器件存在弯折区内金属板剥离的问题。
本申请提供一种柔性显示模组，其包括：
柔性显示面板；
依次设置于所述柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；
依次设置于所述柔性显示面板上的偏光片、第二粘接层、以及盖板；
其中，所述背板位于非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板。
在本申请提供的柔性显示模组中，所述缓冲材料层的厚度与所述背板的厚度相同。
在本申请提供的柔性显示模组中，所述缓冲材料层的材料与所述第一粘接层的材料不同。
在本申请提供的柔性显示模组中，所述缓冲材料层的材料包括橡胶和高分子树脂。
在本申请提供的柔性显示模组中，所述缓冲材料层的材料与所述第一粘接层的材料相同。
在本申请提供的柔性显示模组中，所述第一粘接层的材料为光学胶。
在本申请提供的柔性显示模组中，所述缓冲材料层与所述第一粘接层一体成型。
在本申请提供的柔性显示模组中，所述缓冲材料层与所述第一粘接层分体成型。
本申请提供一种柔性显示模组的制备方法，所述制备方法包括：
制备柔性显示面板；
在所述柔性显示面板下依次制备背板、缓冲材料层、第一粘接层、以及金属板；所述背板位于所述非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于所述弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板；
在所述柔性显示面板上依次制备偏光片、第二粘接层、以及盖板。
在本申请提供的制备方法中，所述在所述柔性显示面板下依次制备背板、第一粘接层、以及金属板的步骤，包括：
在所述非弯折区内的所述柔性显示面板下制备背板；
在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层；
在所述第一粘接层下制备金属板。
在本申请提供的制备方法中，所述在所述非弯折区内的所述柔性显示面板下制备背板的步骤，包括：
在所述柔性显示面板下贴合背板；
沿所述非弯折区和所述弯折区的交界线，对所述背板进行切割；
去除所述弯折区内的所述背板，保留所述非弯折区内的所述背板。
在本申请提供的制备方法中，所述在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层的步骤，包括：
在所述弯折区内，所述柔性显示面板下制备所述第一粘接层的第一粘接部；
在所述第一粘接部和所述背板下，制备所述第一粘接层的第二粘接部。
在本申请提供的制备方法中，所述在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层的步骤，包括：
在所述弯折区内的所述柔性显示面板下、以及所述背板下，贴合所述第一粘接层；所述第一粘接层与弯折区内的所述柔性显示面板、以及所述背板相粘接。
同时，本申请还提供一种柔性显示装置，其包括如上述任一所述的柔性显示模组，所述柔性显示模组包括：
柔性显示面板；
依次设置于所述柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；
依次设置于所述柔性显示面板上的偏光片、第二粘接层、以及盖板；
其中，所述背板位于非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板。
在本申请提供的柔性显示装置中，所述缓冲材料层的厚度与所述背板的厚度相同。
在本申请提供的柔性显示装置中，所述缓冲材料层的材料与所述第一粘接层的材料不同。
在本申请提供的柔性显示装置中，所述缓冲材料层的材料与所述第一粘接层的材料相同。
在本申请提供的柔性显示装置中，所述第一粘接层的材料为光学胶。
在本申请提供的柔性显示装置中，所述缓冲材料层与所述第一粘接层一体成型。
在本申请提供的柔性显示装置中，所述缓冲材料层与所述第一粘接层分体成型。
本申请提供了一种柔性显示模组及其制备方法、柔性显示装置，该柔性显示模组包括：柔性显示面板；依次设置于柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；依次设置于柔性显示面板上的偏光片、第二粘接层、以及盖板；其中，背板位于非弯折区内，用于支撑非弯折区内的柔性显示面板；缓冲材料层位于弯折区内，与背板同层设置；第一粘接层的一侧粘接背板、以及缓冲材料层，第一粘接层的另一侧粘接金属板。通过在柔性显示面板下的非弯折区内设置背板，在柔性显示面板下的弯折区内设置缓冲材料层，用缓冲材料层取代背板，弯折区内不存在背板和金属板之间的弯折系数差异，缓冲材料层相较于背板具有更好的抗弯折性能，当柔性显示模组延弯折区进行弯折时，缓冲材料层的存在使弯折应力得到缓冲，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
下面结合附图，通过对本申请的具体实施方式详细描述，将使本申请的技术方案及其它有益效果显而易见。
图1为现有技术的柔性显示模组的结构示意图。
图2为本申请实施例提供的柔性显示模组的第一种结构在展开状态下的示意图。
图3为本申请实施例提供的柔性显示模组的第一种结构在弯折状态下的示意图。
图4为本申请实施例提供的柔性显示模组的第二种结构在展开状态下的示意图。
图5为本申请实施例提供的柔性显示模组的第二种结构在弯折状态下的示意图。
图6为本申请实施例提供的柔性显示模组的制备流程图。
针对现有柔性显示器件存在弯折区内金属板剥离的问题，本申请实施例提供一种柔性显示模组可以缓解这个问题。
在一种实施例中，如图2至图5所示，本申请提供的柔性显示模组包括弯曲区201和非弯曲区（202，203），在弯曲201内，柔性显示模组包括：
柔性显示面板210；
依次设置于柔性显示面板210下的背板220、缓冲材料层230、第一粘接层240、以及金属板250；
依次设置于柔性显示面板上的偏光片260、第二粘接层270、以及盖板280；
其中，背板220位于非弯折区（202，203）内，用于支撑非弯折区（202，203）内的柔性显示面板210；缓冲材料层230位于弯折区201内，与背板220同层设置；第一粘接层240的一侧粘接背板220、以及缓冲材料层230，第一粘接层240的另一侧粘接金属板250。
本实施例提供了一种柔性显示模组，该柔性显示模组在柔性显示面板下的非弯折区内设置背板，弯折区内设置缓冲材料层，在背板和缓冲材料层下设置金属板；弯折区内以缓冲材料层替代背板，不存在背板和金属板之间的弯折系数差异，缓冲材料层相较于背板具有更好的抗弯折性能，当柔性显示模组延弯折区进行弯折时，缓冲材料层的存在使弯折应力得到缓冲，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
柔性显示面板210一般包括柔性衬底、驱动电路层、以及发光功能层，具体可参照现有技术中的柔性显示面板，在此不做详细赘述。
背板220包括第一背板221和第二背板222，第一背板221位于非弯折区202内，第二背板222位于非弯折区203内，背板220一般为硬质基板，用于支撑柔性显示面板210，其材料可以为无机材料，如玻璃材料或金属材料（铝合金、不锈钢等），也可以为有机材料，如硬质塑料等。
第一粘接层240用于粘接背板220和金属板250，第一粘结层240一般为光学胶层，光学胶具有无色透明、光透过率在90％以上、胶结强度良好、可在室温或中温下固化收缩小等特点，能够高效的将背板220和金属板250粘接在一起。光学胶层的材料包括聚甲基丙烯酸甲酯和环氧丙烯酸酯。
金属板250用于加强柔性显示模组的结构，同时还用于对显示面板进行散热，金属板250的材料包括金属铜、铝合金、不锈钢等。
第二粘接层270的作用同第一粘接层240相同，用于粘接偏光片260和盖板280，第二粘接层270的材料与第一粘接层240的材料相类似。
盖板280用于保护柔性显示面板210，隔绝外部水氧、杂质粒子等进入柔性显示模组，盖板一般为玻璃或透明有机硬质基板。
缓冲材料层230为缓冲材料制备得到，缓冲材料层230位于弯折区201内，第一背板221和第二背板222之间，缓冲材料层230的厚度与背板220的厚度相同，当柔性显示模组沿弯折区进行弯折时，缓冲材料层230为柔性显示模组提供了应力缓冲通道。
在一种实施例中，缓冲材料层230的材料与第一粘接层240的材料不相同，缓冲材料层230采用具有缓冲性能的材料制备得到，能够有效的吸收和释放弯折应力，缓冲材料层230的材料包括但不限于聚氨酯橡胶、丙烯酸酯类材料、以及环氧类材料。如图2、图3所示，缓冲材料层230与第一粘接层240分体成型设置，即在柔性显示模组的制程中，先制备缓冲材料层230，后制备第一粘接层240。
在本实施例相比于现有技术，弯折区内的背板由缓冲材料层230替代，因此弯折区内不存在背板和金属板之间的弯折系数差异，且缓冲材料层230采用橡胶或高分子树脂类有机材料，与第一粘接层240的粘性，比背板220与第一粘接层240之间的粘性更大。如图3所示，当柔性显示模组延弯折区201进行弯折时，缓冲材料层230为弯折应力提供了缓冲空间，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
在本实施例中，缓冲材料层230的材料与第一粘接层240的材料不相同，缓冲材料层230与第一粘接层240分体成型设置，缓冲材料层230可以根据具体的弯折需要，选择更加符合弯折性能需求的材料制备得到，且缓冲材料层230单独成型，制备工艺更加可控。
在另一种实施例中，如图2或图4所示，缓冲材料层（230，430）的材料与第一粘接层（240，440）的材料相同。缓冲材料层（230，430）也为光学胶材料，具有粘接其他膜层的功能。缓冲材料层（230，430）的上侧与柔性显示面板210粘接，缓冲材料层（230，430）的下侧与第一粘接层（240，440）粘接，缓冲材料层（230，430）的左侧与第一背板221粘接，缓冲材料层（230，430）的右侧与第二背板222粘接。
相较于上一实施例，缓冲材料层（230，430）采用与第一粘接层240相同的光学胶材料，使得缓冲材料层（230，430）与柔性显示面板210之间、缓冲材料层（230，430）与第一粘接层（240，440）之间的粘接性能更加牢固，更有利于防止缓冲材料层（230，430）与柔性显示面板210之间、缓冲材料层（230，430）与第一粘接层（240，440）之间相互剥离的风险；同时，光学胶作为一种有机材料具有良好的流动性以及抗弯折性能，当柔性显示模组延弯折区进行弯折时，如图3、图5所示，缓冲材料层（230，430）为弯折应力提供了缓冲空间，更加有效的缓解了现有技术中弯折区内金属板和背板相剥离的问题。
在一种实施方案中，如图2、图3所示，缓冲材料层230与第一粘接层240分体成型设置，即在柔性显示模组的制程中，先制备缓冲材料层230，后制备第一粘接层240。缓冲材料层230与第一粘接层240分体成型设置，缓冲材料层230单独成型，可以采用合适的制备工艺进行制备，更加可控。
在另一种实施方案中，如图4、图5所示，缓冲材料层430与第一粘接层440一体成型设置，即在柔性显示模组的制程中，同时制备缓冲材料层430和第一粘接层440。缓冲材料层430与第一粘接层440的制备方式包括但不限于3D打印、CNC(Computerized
Numerical Control，计算机数控技术)加工等。
同时，本申请提供一种柔性显示模组的制备方法，用于制备上述柔性显示模组，如图6所示，该制备方法包括：
步骤S601、制备柔性显示面板；
步骤S602、在柔性显示面板下依次制备背板、缓冲材料层、第一粘接层、以及金属板；背板位于非弯折区内，用于支撑非弯折区内的柔性显示面板；缓冲材料层位于弯折区内，与背板同层设置；第一粘接层的一侧粘接背板、以及缓冲材料层，第一粘接层的另一侧粘接金属板；
步骤S603、在柔性显示面板上依次制备偏光片、第二粘接层、以及盖板。
本实施例提供了一种柔性显示模组的制备方法，该制备方法通过在柔性显示面板下的非弯折区内制备背板，在柔性显示面板下的弯折区内制备缓冲材料层，用缓冲材料层取代背板，弯折区内不存在背板和金属板之间的弯折系数差异，缓冲材料层相较于背板具有更好的抗弯折性能，当柔性显示模组延弯折区进行弯折时，缓冲材料层的存在使弯折应力得到缓冲，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
步骤S601制备柔性显示面板，可采用现有技术制备柔性显示面板，在此不做限定。
步骤S602在柔性显示面板下依次制备背板、缓冲材料层、第一粘接层、以及金属板的步骤包括：
步骤S6021、在非弯折区内的柔性显示面板下制备背板，包括：在柔性显示面板下贴合背板；采用激光切割工艺，沿非弯折区和弯折区的交界线，对背板进行切割；去除弯折区内的背板，保留非弯折区内的背板。
步骤S6022、在显示面板、背板下，制备缓冲材料层和第一粘接层。
在一种实施例中，首先，在柔性显示面板下的弯折区内，制备缓冲材料层；该缓冲材料层的厚度与背板的厚度相同，缓冲材料层的上表面与柔性显示面板的下表面相接触，缓冲材料层的下表面与背板的下表面齐平，缓冲材料层的左右侧边分别与背板相接触。缓冲材料层可以是采用喷墨打印、喷涂法或化学气相沉积等工艺，在柔性显示面板的下表面的弯折区内直接制备得到；也可以是先制备的到与弯折区平面尺寸相同、与背板厚度相同的缓冲材料层，然后将该缓冲材料层贴合到柔性显示面板的下的弯折区内。然后，在缓冲材料层和背板下，粘贴第一粘接层。
在本实施例中，缓冲材料层和第一粘接层分体制备，即先在柔性显示面板下的折叠区内制备缓冲材料层，再在缓冲材料层和背板下贴合第一粘接层，缓冲材料层单独成型，可以根据缓冲材料层的材料选取合适的工艺手段，制备工艺更加简单可控。
在另一种实施例中，首先，采用3D打印、CNC加工等手段，一体成型制备缓冲材料层和第一粘接层；缓冲材料层和第一粘接层的材料相同，缓冲材料层的平面尺寸与弯折区的平面尺寸相同，缓冲材料层的厚度与背板的厚度相同，缓冲材料层在第一粘接层上的位置，为第一粘接层与背板粘贴后对应的折叠区的位置。然后，在弯折区内的柔性显示面板下、以及背板下，贴合缓冲材料层和第一粘接层；在该过程中需要注意的是，将缓冲材料层与弯折区进行准确对位，保证缓冲材料层能够准确的与弯折区内柔性显示面板的下表面进行粘接。
在本实施例中，缓冲材料层和第一粘接层需要先一体成型制备出，然后与柔性显示面板、背板进行对位粘接，对制备工艺的精确度要求更高。
步骤S6023在第一粘接层下制备金属板，将金属板与第一粘接层进行对位粘接。
另外，本申请还提供一种柔性显示装置，该柔性显示装置包括柔性显示模组，该柔性显示模组包括：
柔性显示面板；
依次设置于柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；
依次设置于柔性显示面板上的偏光片、第二粘接层、以及盖板；
其中，背板位于非弯折区内，用于支撑非弯折区内的柔性显示面板；缓冲材料层位于弯折区内，与背板同层设置；第一粘接层的一侧粘接背板、以及缓冲材料层，第一粘接层的另一侧粘接金属板。
本实施例提供了一种柔性显示装置，该柔性显示装置包括柔性显示模组，该柔性显示模组在柔性显示面板下的非弯折区内设置背板，弯折区内设置缓冲材料层，在背板和缓冲材料层下设置金属板；弯折区内以缓冲材料层替代背板，不存在背板和金属板之间的弯折系数差异，缓冲材料层相较于背板具有更好的抗弯折性能，当柔性显示模组延弯折区进行弯折时，缓冲材料层的存在使弯折应力得到缓冲，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
在一种实施例中，缓冲材料层的厚度背板的厚度相同。
在一种实施例中，缓冲材料层的材料与第一粘接层的材料不同。
在一种实施例中，缓冲材料层的材料包括橡胶和高分子树脂。
在一种实施例中，缓冲材料层的材料与第一粘接层的材料相同。
在一种实施例中，第一粘接层的材料为光学胶。
在一种实施例中，缓冲材料层与第一粘接层一体成型。
在一种实施例中，缓冲材料层与第一粘接层分体成型。
根据上述实施例可知：
本申请实施例提供了一种柔性显示模组及其制备方法、柔性显示装置，该柔性显示模组包括：柔性显示面板；依次设置于柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；依次设置于柔性显示面板上的偏光片、第二粘接层、以及盖板；其中，背板位于所述非弯折区内，用于支撑非弯折区内的柔性显示面板；缓冲材料层位于弯折区内，与背板同层设置；第一粘接层的一侧粘接背板、以及缓冲材料层，第一粘接层的另一侧粘接金属板。通过在柔性显示面板下的非弯折区内设置背板，在柔性显示面板下的弯折区内设置缓冲材料层，用缓冲材料层取代背板，弯折区内不存在背板和金属板之间的弯折系数差异，缓冲材料层相较于背板具有更好的抗弯折性能，当柔性显示模组延弯折区进行弯折时，缓冲材料层的存在使弯折应力得到缓冲，缓解了现有技术中弯折区内金属板和背板相剥离的问题。
综上所述，虽然本申请已以优选实施例揭露如上，但上述优选实施例并非用以限制本申请，本领域的普通技术人员，在不脱离本申请的精神和范围内，均可作各种更动与润饰，因此本申请的保护范围以权利要求界定的范围为准。
Claims (20)
- 一种柔性显示模组，包括：柔性显示面板；依次设置于所述柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；依次设置于所述柔性显示面板上的偏光片、第二粘接层、以及盖板；其中，所述背板位于非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板。
- 如权利要求1所述的柔性显示模组，其中，所述缓冲材料层的厚度与所述背板的厚度相同。
- 如权利要求2所述的柔性显示模组，其中，所述缓冲材料层的材料与所述第一粘接层的材料不同。
- 如权利要求3所述的柔性显示模组，其中，所述缓冲材料层的材料包括橡胶和高分子树脂。
- 如权利要求2所述的柔性显示模组，其中，所述缓冲材料层的材料与所述第一粘接层的材料相同。
- 如权利要求1所述的柔性显示模组，其中，所述第一粘接层的材料为光学胶。
- 如权利要求5所述的柔性显示模组，其中，所述缓冲材料层与所述第一粘接层一体成型。
- 如权利要求5所述的柔性显示模组，其中，所述缓冲材料层与所述第一粘接层分体成型。
- 一种柔性显示模组的制备方法，所述制备方法包括：制备柔性显示面板；在所述柔性显示面板下依次制备背板、缓冲材料层、第一粘接层、以及金属板；所述背板位于所述非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于所述弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板；在所述柔性显示面板上依次制备偏光片、第二粘接层、以及盖板。
- 如权利要求9所述的制备方法，其中，所述在所述柔性显示面板下依次制备背板、第一粘接层、以及金属板的步骤，包括：在所述非弯折区内的所述柔性显示面板下制备背板；在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层；在所述第一粘接层下制备金属板。
- 如权利要求10所述的制备方法，其中，所述在所述非弯折区内的所述柔性显示面板下制备背板的步骤，包括：在所述柔性显示面板下贴合背板；沿所述非弯折区和所述弯折区的交界线，对所述背板进行切割；去除所述弯折区内的所述背板，保留所述非弯折区内的所述背板。
- 如权利要求11所述的制备方法，其中，所述在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层的步骤，包括：在所述弯折区内，所述柔性显示面板下制备所述第一粘接层的第一粘接部；在所述第一粘接部和所述背板下，制备所述第一粘接层的第二粘接部。
- 如权利要求11所述的制备方法，其中，所述在所述弯折区内的所述柔性显示面板下、以及所述背板下，制备所述第一粘接层的步骤，包括：在所述弯折区内的所述柔性显示面板下、以及所述背板下，贴合所述第一粘接层；所述第一粘接层与弯折区内的所述柔性显示面板、以及所述背板相粘接。
- 一种柔性显示装置，其包括如权利要求1至8任一所述的柔性显示模组，所述柔性显示模组包括：柔性显示面板；依次设置于所述柔性显示面板下的背板、缓冲材料层、第一粘接层、以及金属板；依次设置于所述柔性显示面板上的偏光片、第二粘接层、以及盖板；其中，所述背板位于非弯折区内，用于支撑所述非弯折区内的所述柔性显示面板；所述缓冲材料层位于弯折区内，与所述背板同层设置；所述第一粘接层的一侧粘接所述背板、以及所述缓冲材料层，所述第一粘接层的另一侧粘接所述金属板。
- 如权利要求14所述的柔性显示装置，其中，所述缓冲材料层的厚度与所述背板的厚度相同。
- 如权利要求15所述的柔性显示装置，其中，所述缓冲材料层的材料与所述第一粘接层的材料不同。
- 如权利要求15所述的柔性显示装置，其中，所述缓冲材料层的材料与所述第一粘接层的材料相同。
- 如权利要求14所述的柔性显示装置，其中，所述第一粘接层的材料为光学胶。
- 如权利要求18所述的柔性显示装置，其中，所述缓冲材料层与所述第一粘接层一体成型。
- 如权利要求18所述的柔性显示装置，其中，所述缓冲材料层与所述第一粘接层分体成型。
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| CN112396963A (zh) * | 2020-11-16 | 2021-02-23 | 武汉华星光电半导体显示技术有限公司 | 可折叠显示模组及装置 |
| CN112582575A (zh) * | 2020-12-25 | 2021-03-30 | 京东方科技集团股份有限公司 | 柔性显示模组及电子设备 |
| CN113035059B (zh) * | 2021-02-26 | 2022-08-02 | 武汉华星光电半导体显示技术有限公司 | 显示模组 |
| CN113129746A (zh) * | 2021-04-01 | 2021-07-16 | 武汉华星光电技术有限公司 | 支撑复合板及其制备方法、显示模组 |
| CN113724603B (zh) * | 2021-09-08 | 2022-11-01 | 武汉华星光电半导体显示技术有限公司 | 显示模组 |
| CN217113682U (zh) * | 2021-11-29 | 2022-08-02 | 武汉华星光电半导体显示技术有限公司 | 一种显示装置 |
| CN114170912B (zh) * | 2021-12-15 | 2024-01-16 | 武汉华星光电半导体显示技术有限公司 | 显示模组及电子设备 |
| CN115100959B (zh) * | 2022-06-17 | 2023-10-31 | 武汉华星光电半导体显示技术有限公司 | 显示模组及显示装置 |
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