WO2020248532A1 - 一种曲面玻璃盖板及其制作方法 - Google Patents

一种曲面玻璃盖板及其制作方法 Download PDF

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Publication number
WO2020248532A1
WO2020248532A1 PCT/CN2019/122254 CN2019122254W WO2020248532A1 WO 2020248532 A1 WO2020248532 A1 WO 2020248532A1 CN 2019122254 W CN2019122254 W CN 2019122254W WO 2020248532 A1 WO2020248532 A1 WO 2020248532A1
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WIPO (PCT)
Prior art keywords
ink
cover
groove
glass cover
cover plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/122254
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English (en)
French (fr)
Inventor
张允题
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Original Assignee
Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Filing date
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Application filed by Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd filed Critical Wuhan China Star Optoelectronics Semiconductor Display Technology Co Ltd
Publication of WO2020248532A1 publication Critical patent/WO2020248532A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • 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 technology, in particular to a curved glass cover plate and a manufacturing method thereof.
  • the flexible panel is developed on the basis of OLED (Organic Light Emitting Diode) technology. Based on flexible OLED panel technology, a curved mobile phone terminal with a curved glass cover has emerged. Due to its rounded feel, tiny appearance, wide viewing angle, and large screen ratio, it has become one of the mainstream mobile phone terminals on the market.
  • OLED Organic Light Emitting Diode
  • Glass cover also called window protective glass
  • the traditional flat glass cover is gradually transformed and upgraded to 2.5D, 3D and other special-shaped curved glass covers.
  • the 2.5D glass cover refers to the smooth transition of the edges of the cover
  • the 3D glass cover refers to the overall curved surface of the cover, that is, the entire surface of the cover is curved.
  • the rounded edge has stronger anti-collision ability and higher safety than the right-angled edge, which makes the product more durable and more in line with the consumer's aesthetic experience.
  • FIGS. 1A-1B Please refer to FIGS. 1A-1B, where FIG. 1A is a side view of a 3D glass cover in the prior art, and FIG. 1B is a side view of a 3D glass cover of a curved screen mobile phone terminal in the prior art after being attached.
  • a 3D cover glass (Cover glass) 11 is used as the front cover of the curved screen mobile phone terminal in the production process of the curved screen mobile phone terminal.
  • an ink area is designed based on shading considerations.
  • the ink area is mainly coated with black and white inks to form the ink layer 112.
  • the thickness of the black ink layer is generally on the order of 15-25um, and the thickness of the white ink layer is generally on the order of 20-30um. Therefore, the upper surface of the ink layer 112 and the lower surface corresponding to the 3D glass cover 11 will produce a step, which is called the ink gap.
  • the area where the ink gap is formed is the ink gap area 113 (the position is indicated by a dashed frame in the figure) .
  • a layer of transparent optical adhesive (OCA) 13 needs to be used for bonding between the 3D glass cover 11 and the display module 12 of the curved screen mobile phone terminal to complete the bonding of the 3D glass cover 11.
  • the display module 12 of the curved screen mobile phone terminal includes an OLED layer 121, a touch (TP) layer 122, a polarizer 123, etc., which are stacked in sequence.
  • the figure shows that a layer of transparent optical glue 13 is used for bonding between the 3D glass cover 11 and the polarizer 123 on the top layer of the display module 12 of the curved screen mobile phone terminal.
  • the thickness of the transparent optical glue 13 used is generally 3-4 times the thickness of the ink layer 112, which makes the whole machine thicker, which is not conducive to the development of light and thin products.
  • the purpose of this application is to provide a curved glass cover plate, a manufacturing method thereof, and a flexible display device in view of the problems in the prior art.
  • the upper surface of the ink layer is flush with the lower surface corresponding to the curved glass cover plate, and there is no ink break. Therefore, the thickness of the transparent optical glue used in vacuum bonding is reduced, and the thickness of the whole machine is reduced to meet the requirements of further thinning of the product.
  • the present application provides a method for manufacturing a curved glass cover plate.
  • the manufacturing method includes the following steps: providing a cover plate main body; using electron beam lithography, focused ion beams or lasers on the cover plate main body At least one area to be coated with ink is slotted to form a groove in the area to be coated; the cover body after slotting is strengthened; using exposure and development methods or smart spraying combined with laser engraving
  • the groove is filled with ink to form an ink layer, wherein the thickness of the ink layer is the same as the depth of the groove, and the width of the ink layer is the same as the width of the groove, so that the curved surface
  • no bubbles are generated.
  • the present application also provides a method for manufacturing a curved glass cover plate, which includes the following steps: providing a cover plate main body; and grooving at least one area to be coated with the ink on the cover plate main body.
  • the area to be coated with ink forms a groove; the groove is filled with ink to form an ink layer, wherein the thickness of the ink layer is the same as the depth of the groove, and the width of the ink layer is the same as that of the groove.
  • the grooves have the same width, so that no air bubbles are generated when the curved glass cover plate is attached to a display module.
  • the present application also provides a curved glass cover plate, including: a cover plate body having at least one area to be coated with ink, and each area to be coated with a groove; At least one ink layer is filled in the groove, the thickness of the ink layer is the same as the depth of the groove, and the width of the ink layer is the same as the width of the groove, so that the curved glass cover No bubbles are generated when the board is attached to a display module.
  • grooves are formed by grooving the ink-coated area of the 2.5D/3D glass cover plate.
  • the groove depth corresponds to the thickness of the ink layer
  • the groove width corresponds to the width of the ink layer. Therefore, after filling the ink in the groove, because The thickness of the ink layer is the same as the depth of the groove, and the width of the ink layer is the same as the width of the groove, so that the lower surface of the ink layer is flush with the corresponding lower surface of the cover plate, and there is no ink gap, so that 2.5D/ No bubbles are formed when the 3D glass cover plate is attached to the display module, which improves the product yield.
  • the ink layer filling process at the groove can use the existing coating process, without the need to develop a new coating ink layer process, effectively controlling the production cost.
  • the lower surface of the ink layer is flush with the lower surface of the cover body, there is no ink gap, so the thickness of the transparent optical glue used when the curved glass cover is bonded to the display module is reduced, which can be reduced to the existing
  • the thickness of the transparent optical glue used to overcome the influence of ink gap is about 30%, thereby effectively reducing the thickness of the whole machine, meeting the requirements of further thinning of the product, and bringing a better user experience.
  • Figure 1A a side view of a 3D glass cover in the prior art
  • Fig. 1B a side view of the 3D glass cover plate of the curved screen mobile phone terminal in the prior art after vacuum bonding;
  • Figure 2 is a schematic flow chart of the method for manufacturing a curved glass cover plate of the present application
  • FIG. 4 is a schematic diagram of the layered structure of the first embodiment of the flexible display device of the present application.
  • FIG. 6 is a schematic diagram of the layered structure of the second embodiment of the flexible display device of the present application.
  • the "above” or “under” the first feature of the second feature may include the first and second features in direct contact, or may include the first and second features Not in direct contact but through other features between them.
  • the "above”, “above” and “above” of the first feature on the second feature include the first feature directly above and diagonally above the second feature, or it simply means that the first feature is higher in level than the second feature.
  • the first feature is “below”, “below” and “below” the second feature, including the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • FIG. 2 is a schematic flow diagram of a method for manufacturing a curved glass cover plate of the present application.
  • the manufacturing method of the present application includes the following steps: S21: providing a cover plate body; S22: grooving at least one area to be coated with ink on the cover plate body to form a groove in the area to be coated; S23: Strengthen the cover plate body after the groove processing; S24: fill the groove with ink to form an ink layer, wherein the thickness of the ink layer is the same as the depth of the groove, and the ink The width of the layer is the same as the width of the groove, so that no air bubbles are generated when the curved glass cover plate is attached to a display module.
  • Step S23 is an optional step, which is indicated by a dashed frame in the figure. A detailed description is given below in conjunction with the drawings.
  • S21 Provide a cover body.
  • the cover main body is a 2.5D glass cover or a 3D glass cover.
  • the 2D glass is formed by hot bending to form a 3D glass cover as the main body of the cover.
  • S22 Perform grooving on at least one area to be coated with ink of the cover body to form a groove in the area to be coated with ink.
  • the cover main body includes two areas to be coated with ink, and the two areas to be coated are respectively located on the lower surfaces of the two ends outside the window area of the cover main body.
  • electron beam lithography focused ion beam, or laser may be used to groove the area to be coated to form grooves in the area to be coated.
  • an etching solution may also be used to chemically etch the area to be coated with ink to form a groove in the area to be coated with ink.
  • the 2.5D glass cover plate or the 3D glass cover plate is strengthened to form a corresponding strengthened glass cover plate.
  • Tempered glass also known as tempered glass, uses physical or chemical methods to form a compressive stress layer on the surface of the glass, so that the glass itself has high compressive strength and is not easy to be damaged. When the strengthened glass is subjected to an external force, this compressive stress layer can offset part of the pressure to avoid glass fragmentation, thereby achieving the purpose of improving the strength of the glass. Tempered glass has high compressive strength, high impact strength, high elasticity and good thermal stability.
  • the physical strengthening method can refer to the existing technology, and will not be repeated here.
  • the main body of the cover plate after the grooving process can be immersed in molten potassium nitrate (KNO 3 ) above 400 o C for 3-10 hours to make the glass surface of the cover plate main body form a pressure Stress layer.
  • KNO 3 molten potassium nitrate
  • the Na + ions on the surface of the glass exchange with K + ions. Since the radius of K + ions is larger than the radius of Na + , the outer layer shrinks less and the inner layer shrinks more during the cooling process. When it is cooled to normal temperature, the glass will be in a state where the inner layer is stretched and the outer layer is compressed, so that a compressive stress layer is formed on the surface of the glass to achieve the purpose of improving the strength of the glass.
  • S24 Fill the groove with ink to form an ink layer, wherein the thickness of the ink layer is the same as the depth of the groove, and the width of the ink layer is the same as the width of the groove, so that the When the curved glass cover plate is attached to a display module, no bubbles are generated.
  • the ink layer may be filled with black ink or white ink.
  • the recess can be filled with ink by using an exposure and development method or an intelligent spraying method combined with a laser engraving method.
  • the exposure and development method or the intelligent spraying combined with laser engraving method can refer to the existing technology, and will not be repeated here.
  • the existing screen printing (for 2.5D glass cover) or Deco Film (Deco Film) attachment (for 3D glass cover) and other ink layer coating processes can also be used to coat the concave The groove is filled with ink to form an ink layer.
  • the display module includes various components necessary for display.
  • This application proposes a new method for manufacturing a curved glass cover plate.
  • the groove is formed by grooving the ink area of the 2.5D/3D glass cover plate to be coated.
  • the groove depth corresponds to the thickness of the ink layer and the groove width corresponds to The width of the ink layer, so after filling the groove with ink, since the thickness of the ink layer is the same as the depth of the groove, the width of the ink layer is the same as the width of the groove, so that the lower surface of the ink layer corresponds to the lower surface of the cover body It is flush and there is no ink gap, so that no bubbles are formed when the 2.5D/3D glass cover plate is attached to the display module, and the product yield is improved.
  • the ink layer filling process at the groove can use the existing coating process, without the need to develop a new coating ink layer process, effectively controlling the production cost.
  • the thickness of the transparent optical adhesive (OCA) used when the curved glass cover is bonded to the display module is reduced, which can be reduced to
  • the thickness of the existing transparent optical glue used to overcome the influence of ink gap is about 30%, thereby effectively reducing the thickness of the whole machine, meeting the requirements of further thinning of the product, and bringing a better user experience.
  • FIG. 3A-FIG. 3C is a production flow chart of the first embodiment of the curved glass cover plate of this application.
  • step S21 providing a cover body
  • FIG. 3A is a side view of the 3D glass cover plate after heat bending provided by the first embodiment of the application.
  • the 3D glass cover plate 31 can be formed as the cover plate main body of the curved glass cover plate 30 by performing hot bending molding of the 2D glass.
  • the 3D glass cover plate 31 includes a window area 311, and a first end 312 and a second end 313 located outside the window area 311.
  • step S22 grooving at least one area to be coated with ink on the cover body to form a groove in the area to be coated with ink, please refer to FIG. 2 and FIG. 3B together, where FIG. 3B is the application The side view of the 3D glass cover plate after slotting provided by the first embodiment. Specifically, etching, electron beam lithography (EBL), focused ion beam (FIB), or laser can be used to groove the two areas to be coated on the 3D glass cover 31 to form a first recess respectively. Groove 314, and a second groove 315.
  • EBL electron beam lithography
  • FIB focused ion beam
  • the depth of the first groove 314 and the second groove 315 corresponds to the thickness of the ink layer, and the width of the first groove 314 and the second groove 315 corresponds to the width of the ink layer, so that the ink is filled After that, the lower surface of the ink layer is flush with the lower surface of the corresponding end of the 3D glass cover plate 31, and there is no ink gap.
  • the grooved 3D glass cover plate 31 can be strengthened, specifically immersing it in the molten KNO 3 above 400 o C for 3-10 hours, and the Na + ions on the glass surface and K + Ion exchange occurs. Since the radius of K + ions is larger than the radius of Na + , the outer layer shrinks less and the inner layer shrinks larger during the cooling process. When cooled to room temperature, the glass is in the inner layer and the outer layer is stretched. The state of pressing makes the surface of the glass form a compressive stress layer to achieve the purpose of improving the strength of the glass.
  • step S24 filling the groove with ink to form an ink layer
  • FIG. 3C is a side view of the ink-filled 3D glass cover provided by the first embodiment of the application .
  • the corresponding grooves can be filled with ink by means of exposure and development or smart spray + laser engraving to form a first ink layer 316 and a second ink layer 317 respectively.
  • the thickness of the first ink layer 316 is the same as the depth of the first groove 314, and the width of the first ink layer 316 is the same as the width of the first groove 314.
  • the lower surface of the first ink layer 316 is flush with the lower surface of the first end 312 of the 3D glass cover plate 31, and there is no ink gap; correspondingly, the thickness of the second ink layer 317 is equal to that of the The depth of the second groove 315 is the same, and the width of the second ink layer 317 is the same as the width of the second groove 315. Therefore, after the ink is filled, the lower surface of the second ink layer 317 and the 3D The lower surface of the second end 313 of the glass cover plate 31 is flush, and there is no ink gap.
  • the ink layer filling process at the groove can use the existing coating process, without the need to develop a new coating ink layer process, effectively controlling the production cost.
  • the curved glass cover plate 30 includes: a 3D glass cover plate 31, two ink areas of the 3D glass cover plate 31 are respectively provided with a first groove 314 and a second groove 315; a first ink The layer 316 is filled in the first groove 314, the thickness of the first ink layer 316 is the same as the depth of the first groove 314, and the width of the first ink layer 316 is the same as that of the first groove 314.
  • the width of the groove 314 is the same; a second ink layer 317 is filled in the second groove 315, the thickness of the second ink layer 317 is the same as the depth of the second groove 315, and the second ink
  • the width of the layer 317 is the same as the width of the second groove 315; thus, no air bubbles are generated when the curved glass cover 30 is attached to the display module.
  • the 3D glass cover plate 31 includes a window area 311 and a first end 312 and a second end 313 located outside the window area 311.
  • the two ink-to-be-applied areas are respectively located on the lower surface of the first end 312 and the second end 313 outside the window area 311, that is, the first groove 314 corresponds to the first end 312,
  • the second groove 315 corresponds to the second end 313.
  • the 3D glass cover plate 31 is a strengthened glass cover plate that has been strengthened.
  • FIG. 4 is a schematic diagram of the layered structure of the first embodiment of the flexible display device of the present application.
  • the flexible display device includes a curved glass cover 30 and a flexible touch display module 40.
  • the curved glass cover 30 and the flexible touch display module 40 are vacuum bonded with transparent optical glue 41; the curved glass
  • the cover plate 30 adopts a curved glass cover plate 30 as shown in FIG. 3C.
  • the first and second ink layers 316 and 317 of the curved glass cover plate 30 play a role of shading and beautifying.
  • the flexible display device includes, but is not limited to, electronic devices such as mobile phones, tablet computers, digital cameras, or notebook computers.
  • the 3D glass cover plate 31 of the curved glass cover plate 30 is a strengthened glass cover plate that has been strengthened, which functions to protect the flexible touch display module 40, and can resist scratches and external impacts. .
  • the transparent optical glue 41 can be acrylic glue or silica gel, and the curved glass cover 30 and the flexible touch display module 40 are bonded while ensuring light transmittance, and can absorb Impact energy.
  • the flexible touch display module 40 includes various components necessary for touch display, such as an OLED layer 401, a touch (TP) layer 402, and a polarizer 403 which are stacked in sequence.
  • OLED layer 401 an OLED layer 401
  • TP touch
  • polarizer 403 which are stacked in sequence.
  • the figure shows that the curved glass cover 30 and the uppermost polarizer 403 of the flexible touch display module 40 are bonded by a layer of transparent optical glue 41.
  • the lower surface of the ink layer of the curved glass cover plate is flush with the lower surface of the 3D glass cover plate, and there is no ink gap, so that no bubbles are formed during bonding, and the bonding effect is good and improved Product yield.
  • the ink layer filling process at the groove can use the existing coating process, without the need to develop a new coating ink layer process, effectively controlling the production cost.
  • the thickness of the transparent optical adhesive used when the curved glass cover is bonded to the flexible touch display module is reduced, which can be reduced to 30% of the thickness of the transparent optical adhesive used to overcome the effect of ink gap. %, so as to effectively reduce the thickness of the whole flexible display device, meet the further thinner and lighter requirements of the product, and thus bring a better user experience.
  • FIG. 5A-FIG. 5C is a production flow chart of the second embodiment of the curved glass cover plate of this application.
  • step S21 providing a cover body
  • FIG. 5A is a side view of the 2.5D glass cover provided by the second embodiment of the application. That is, a 2.5D glass cover 51 is provided as the cover main body of the curved glass cover 50.
  • the 2.5D glass cover 51 includes a window area 511, and a first end 512 and a second end 513 located outside the window area 511.
  • step S22 grooving at least one area to be coated with ink on the cover body to form a groove in the area to be coated with ink, please refer to FIG. 2 and FIG. 5B together, where FIG. 5B is the application
  • the second embodiment provides a side view of a 2.5D glass cover plate after slotting. Specifically, etching, electron beam lithography (EBL), focused ion beam (FIB), or laser can be used to groove the two ink areas to be coated on the 2.5D glass cover 51, respectively.
  • the inked area forms a first groove 514 and a second groove 515.
  • the depth of the first groove 514 and the second groove 515 corresponds to the thickness of the ink layer, and the width of the first groove 514 and the second groove 515 corresponds to the width of the ink layer, so that the ink is filled After that, the lower surface of the ink layer is flush with the lower surface of the corresponding end of the 2.5D glass cover plate 51, and there is no ink gap.
  • the 2.5D glass cover plate 51 after the slotting treatment can be strengthened, specifically by immersing it in the molten KNO 3 above 400 o C for 3-10 hours, and the Na + ions on the surface of the glass and K + ions undergo ion exchange. Since the radius of K + ions is larger than the radius of Na + , the outer layer shrinks less and the inner layer shrinks more during the cooling process. When cooled to normal temperature, the glass is in the inner layer and the outer layer is stretched. The state of the layer under pressure makes the surface layer of the glass form a compressive stress layer to achieve the purpose of improving the strength of the glass.
  • step S24 filling the groove with ink to form an ink layer
  • FIG. 2 and FIG. 5C are the side of the 2.5D glass cover plate after ink filling provided by the second embodiment of the application view.
  • the corresponding grooves can be filled with ink by means of exposure and development or smart spray + laser engraving to form a first ink layer 516 and a second ink layer 517 respectively.
  • the thickness of the first ink layer 516 is the same as the depth of the first groove 514, and the width of the first ink layer 516 is the same as the width of the first groove 514.
  • the lower surface of the first ink layer 516 is flush with the lower surface of the first end portion 512 of the 2.5D glass cover plate 51, and there is no ink gap; correspondingly, the thickness of the second ink layer 517 is equal to The depth of the second groove 515 is the same, and the width of the second ink layer 517 is the same as the width of the second groove 515. Therefore, after the ink is filled, the lower surface of the second ink layer 517 is The lower surface of the second end 513 of the 2.5D glass cover plate 51 is flush, and there is no ink gap.
  • the curved glass cover plate 50 includes: a 2.5D glass cover plate 51. Two ink areas of the 2.5D glass cover plate 51 are respectively provided with a first groove 514 and a second groove 515; The ink layer 516 is filled in the first groove 514, the thickness of the first ink layer 516 is the same as the depth of the first groove 514, and the width of the first ink layer 516 is the same as that of the first groove 514.
  • the width of the groove 514 is the same; the second ink layer 517 is filled in the second groove 515, the thickness of the second ink layer 517 is the same as the depth of the second groove 515, and the second ink layer The width of the layer 517 is the same as the width of the second groove 515; thus, no air bubbles are generated when the curved glass cover 50 is attached to the display module.
  • the 2.5D glass cover 51 includes a window area 511, and a first end 512 and a second end 513 located outside the window area 511.
  • the two ink to-be-applied areas are respectively located on the lower surface of the first end 512 and the second end 513 outside the window area 511, that is, the first groove 514 corresponds to the first end 512, The second groove 515 corresponds to the second end 513.
  • the 2.5D glass cover plate 51 is a strengthened glass cover plate that has been strengthened.
  • FIG. 6 is a schematic diagram of the layered structure of the second embodiment of the flexible display device of the present application.
  • the flexible display device includes a curved glass cover 50 and a flexible touch display module 60.
  • Transparent optical glue 61 is used for vacuum bonding between the curved glass cover 50 and the flexible touch display module 60; the curved glass
  • the cover 50 adopts a curved glass cover 50 as shown in FIG. 5C.
  • the first and second ink layers 516 and 517 of the curved glass cover 50 play a role of shading and beautifying.
  • the flexible display device includes, but is not limited to, electronic devices such as mobile phones, tablet computers, digital cameras, or notebook computers.
  • the 2.5D glass cover plate 51 of the curved glass cover plate 50 is a strengthened glass cover plate that has been strengthened to protect the flexible touch display module 60, and can resist scratches and external Shock.
  • the transparent optical glue 61 may be acrylic glue or silica gel, and the curved glass cover 50 and the flexible touch display module 60 are bonded while ensuring light transmittance, and can absorb Impact energy.
  • the flexible touch display module 60 includes components necessary for touch display, such as an OLED layer 601, a touch (TP) layer 602, and a polarizer 603 which are stacked in sequence.
  • OLED organic light-emitting diode
  • TP touch
  • polarizer 603 which are stacked in sequence.
  • the figure shows that the curved glass cover 50 and the uppermost polarizer 603 of the flexible touch display module 60 are bonded by a layer of transparent optical glue 61.
  • the lower surface of the ink layer of the curved glass cover is flush with the lower surface corresponding to the 2.5D glass cover, and there is no ink break, so that no bubbles are formed during vacuum bonding, and the bonding effect is good , Improve product yield.
  • the ink layer filling process at the groove can use the existing coating process, without the need to develop a new coating ink layer process, effectively controlling the production cost.
  • the thickness of the transparent optical adhesive used when the curved glass cover is bonded to the flexible touch display module is reduced, which can be reduced to 30% of the thickness of the transparent optical adhesive used to overcome the effect of ink gap. %, so as to effectively reduce the thickness of the whole flexible display device, meet the further thinner and lighter requirements of the product, and thus bring a better user experience.
  • the subject of this application can be manufactured and used in industry and has industrial applicability.

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Abstract

一种曲面玻璃盖板及其制作方法，通过对2.5D/3D玻璃盖板（31、51）的待涂油墨区进行开槽处理形成凹槽（314、315、514、515），使得在凹槽（314、315、514、515）内填充油墨后，油墨层上表面与曲面玻璃盖板对应的下表面平齐，不存在油墨断差，改善贴合气泡，还可降低贴合所采用的透明光学胶厚度。

Description

一种曲面玻璃盖板及其制作方法 技术领域
本申请涉及显示技术领域，尤其涉及一种曲面玻璃盖板及其制作方法。
 背景技术
柔性面板是在OLED(Organic Light Emitting Diode，有机发光二极管)技术的基础上发展起来的。基于柔性OLED面板技术，出现了玻璃盖板边缘弯曲的曲面屏手机终端，由于其具有圆润手感、精致外观、视角广阔、屏占比大等优点，已经成为市场上主流手机终端之一。
玻璃盖板也称视窗防护玻璃，是手机、平板电脑、数码相机或笔记本电脑等电子设备的重要组成部件。随着曲面屏幕电子设备的发展，人们对触摸屏的外观、轻薄化和使用舒适度等要求也越来越高，传统的平面玻璃盖板逐渐向2.5D、3D等异形弧面玻璃盖板转变升级。2.5D玻璃盖板是指盖板的棱边有圆滑过渡，3D玻璃盖板是指盖板整体为异形弧面，即盖板整体表面为曲面。圆滑的边缘比直角边缘的防撞能力更强，安全性更高，使产品更耐用，同时也更加符合消费者的审美体验。
 技术问题
请参阅图1A-图1B，其中，图1A为现有技术中3D玻璃盖板的侧视图，图1B为现有技术中曲面屏手机终端3D玻璃盖板贴合后的侧视图。
如图1A所示，现有技术中曲面屏手机终端生产过程中需采用3D玻璃盖板(Cover glass)11作为曲面屏手机终端前盖板。在3D玻璃盖板11的视窗区(VA)111以外区域，基于遮光考量会有油墨区(Ink area)设计。油墨区主要采用黑色、白色等油墨进行涂布形成油墨层112，黑色油墨层厚度一般为15-25um量级，白色油墨层厚度一般为20-30um量级。因此，油墨层112上表面与3D玻璃盖板11对应的下表面会产生一个台阶，称为油墨断差，形成油墨断差的区域为油墨断差区113(图中以虚框示意其位置)。
如图1B所示，3D玻璃盖板11与曲面屏手机终端的显示模块12间需要采用一层透明光学胶(OCA)13进行粘合，完成3D玻璃盖板11的贴合。曲面屏手机终端的显示模块12包括依次层叠设置的OLED层121、触控(TP)层122以及偏光片123等。图中示出3D玻璃盖板11与曲面屏手机终端的显示模块12最上层的偏光片123间采用一层透明光学胶13进行粘合。然而，在实际真空贴附的过程，由于油墨断差的影响，在油墨断差区113经常会出现气泡，直接影响产品良率。为了克服油墨断差，采用的透明光学胶13厚度一般为油墨层112厚度的3-4倍，使得整机厚度较厚，不利于产品轻薄化的发展。
因此，如何克服油墨断差且满足产品的进一步轻薄化要求，是3D玻璃盖板发展目前需要解决的技术问题。
 技术解决方案
本申请的目的在于，针对现有技术存在的问题，提供一种曲面玻璃盖板及其制作方法、柔性显示设备，油墨层上表面与曲面玻璃盖板对应的下表面平齐，不存在油墨断差，从而降低了真空贴合所采用的透明光学胶厚度，进而降低整机厚度，满足产品的进一步轻薄化要求。
为实现上述目的，本申请提供了一种曲面玻璃盖板的制作方法，所述制作方法包括以下步骤：提供一盖板主体；采用电子束光刻、聚焦离子束或激光对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽；对开槽处理后的所述盖板主体进行强化处理；利用曝光显影方式或智能喷涂结合镭雕方式对所述凹槽进行油墨填充，形成油墨层，其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
为实现上述目的，本申请还提供了一种曲面玻璃盖板的制作方法，包括以下步骤：提供一盖板主体；对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽；对所述凹槽进行油墨填充，形成油墨层，其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
为实现上述目的，本申请还提供了一种曲面玻璃盖板，包括：一盖板主体，所述盖板主体具有至少一待涂油墨区，每一所述待涂油墨区设有一凹槽；至少一油墨层，填充于所述凹槽内，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
 有益效果
本申请通过对2.5D/3D玻璃盖板的待涂油墨区进行开槽处理形成凹槽，凹槽深度对应油墨层厚度，凹槽宽度对应油墨层宽度，因此在凹槽内填充油墨后，由于油墨层的厚度与凹槽的深度相同，油墨层的宽度与凹槽的宽度相同，使得油墨层的下表面与盖板主体对应的下表面平齐，不存在油墨断差，从而使得2.5D/3D玻璃盖板与显示模块贴合时不会形成气泡，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需另外开发新的涂布油墨层工艺，有效控制生产成本。且，由于油墨层的下表面与盖板主体对应的下表面平齐，不存在油墨断差，故而曲面玻璃盖板与显示模块贴合时采用的透明光学胶厚度降低，可以降低到现有为克服油墨断差影响所采用的透明光学胶厚度的30%左右，从而有效降低整机厚度，满足产品的进一步轻薄化要求，从而带来更好的用户体验。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1A，现有技术中3D玻璃盖板的侧视图；
图1B，现有技术中曲面屏手机终端3D玻璃盖板真空贴合后的侧视图；
图2，本申请曲面玻璃盖板的制作方法的流程示意图；
图3A-图3C，本申请曲面玻璃盖板第一实施例的制作流程图；
图4，本申请柔性显示设备第一实施例的层状结构示意图；
图5A-图5C，本申请曲面玻璃盖板第二实施例的制作流程图；
图6，本申请柔性显示设备第二实施例的层状结构示意图。
 本发明的实施方式
下面详细描述本申请的实施方式，所述实施方式的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的，仅用于解释本申请，而不能理解为对本申请的限制。
本申请的说明书和权利要求书以及附图中的术语“第一”“第二”“第三”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应当理解，这样描述的对象在适当情况下可以互换。此外，术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排它的包含。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“之上”或“之下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本申请的不同结构。为了简化本申请的公开，下文中对特定例子的部件和设置进行描述。当然，它们仅仅为示例，并且目的不在于限制本申请。本申请可以在不同例子中重复参考数字和/或参考字母，这种重复是为了简化和清楚的目的，其本身不指示所讨论各种实施方式和/或设置之间的关系。此外，本申请提供了的各种特定的工艺和材料的例子，但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图2，本申请曲面玻璃盖板的制作方法的流程示意图。本申请制作方法包括如下步骤：S21：提供一盖板主体；S22：对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽；S23：对开槽处理后的所述盖板主体进行强化处理；S24：对所述凹槽进行油墨填充，形成油墨层，其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。其中步骤S23为可选步骤，图中以虚框示意。以下结合附图给出详细说明。
S21：提供一盖板主体。
进一步的实施例中，所述盖板主体为2.5D玻璃盖板或3D玻璃盖板。
进一步的实施例中，对2D玻璃进行热弯成型，形成3D玻璃盖板作为所述盖板主体。
S22：对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽。
进一步的实施例中，所述盖板主体包括两个待涂油墨区，所述两个待涂油墨区分别位于所述盖板主体的视窗区以外的两个端部的下表面。
进一步的实施例中，可以采用电子束光刻、聚焦离子束或激光对所述待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽。在其它实施例中，也可以利用蚀刻液对所述待涂油墨区进行化学蚀刻，以在所述待涂油墨区形成凹槽。
S23：对开槽处理后的所述盖板主体进行强化处理。
进一步的实施例中，对2.5D玻璃盖板或3D玻璃盖板进行强化处理，形成相应的强化玻璃盖板。强化玻璃又称钢化玻璃，是用物理或化学的方法，在玻璃表面上形成一个压应力层，使玻璃本身具有较高的抗压强度，不易被破坏。当强化玻璃受到外力作用时，这个压应力层可将部分压力抵消，避免玻璃的碎裂，从而达到提高玻璃强度的目的。强化玻璃抗压强度高、抗冲击强度也很高、弹性大、热稳定性好。物理强化的方法可参照现有工艺，此处不再赘述。
进一步的实施例中，可以将开槽处理后的所述盖板主体浸在400 oC以上熔融态硝酸钾(KNO 3)中3-10小时，以使所述盖板主体的玻璃表层形成压应力层。具体的，在熔融态KNO 3中，玻璃表层的Na +离子与K +离子发生离子交换，由于K +离子半径大于Na +半径，从而在冷却过程中造成外层收缩较小而内层收缩较大，当冷却到常温后，玻璃便处于内层受拉，外层受压的状态，使得玻璃表层形成压应力层，达到提高玻璃强度的目的。
S24：对所述凹槽进行油墨填充，形成油墨层，其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
进一步的实施例中，所述油墨层可以采用黑色油墨或白色油墨填充而成。
进一步的实施例中，可以利用曝光显影方式或智能喷涂结合镭雕方式对所述凹槽进行油墨填充。曝光显影方式或智能喷涂结合镭雕方式均可参照现有工艺，此处不再赘述。在其它实施例中，也可以利用现有的丝网印刷(针对2.5D玻璃盖板)或眩光膜(Deco Film)贴附(针对3D玻璃盖板)等油墨层涂布工艺，对所述凹槽进行油墨填充，形成油墨层。
需要说明的是，所述显示模块包括显示所必需的各组件。
本申请提出的一种新型的曲面玻璃盖板的制作方法，通过对2.5D/3D玻璃盖板的待涂油墨区进行开槽处理形成凹槽，凹槽深度对应油墨层厚度，凹槽宽度对应油墨层宽度，因此在凹槽内填充油墨后，由于油墨层的厚度与凹槽的深度相同，油墨层的宽度与凹槽的宽度相同，使得油墨层的下表面与盖板主体对应的下表面平齐，不存在油墨断差，从而使得2.5D/3D玻璃盖板与显示模块贴合时不会形成气泡，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需另外开发新的涂布油墨层工艺，有效控制生产成本。且，由于油墨层的下表面与盖板主体对应的下表面平齐，不存在油墨断差，故而曲面玻璃盖板与显示模块贴合时采用的透明光学胶(OCA)厚度降低，可以降低到现有为克服油墨断差影响所采用的透明光学胶厚度的30%左右，从而有效降低整机厚度，满足产品的进一步轻薄化要求，从而带来更好的用户体验。
请一并参阅图2及图3A-图3C，其中，图3A-图3C为本申请曲面玻璃盖板第一实施例的制作流程图。
关于步骤S21：提供一盖板主体，请一并参考图2以及图3A，其中图3A为本申请第一实施例提供的热弯成型后的3D玻璃盖板的侧视图。可以通过对2D玻璃进行热弯成型，形成3D玻璃盖板31作为所述曲面玻璃盖板30的盖板主体。其中，3D玻璃盖板31包括一视窗区311，以及位于所述视窗区311以外的一第一端部312、及一第二端部313。
关于步骤S22：对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽，请一并参考图2以及图3B，其中图3B为本申请第一实施例提供的开槽处理后的3D玻璃盖板的侧视图。具体的，可以用刻蚀、电子束光刻(EBL)、聚焦离子束(FIB)或激光等手段对3D玻璃盖板31的两个待涂油墨区进行开槽处理，分别形成一第一凹槽314、及一第二凹槽315。其中，所述第一凹槽314及所述第二凹槽315的深度对应油墨层厚度，所述第一凹槽314及所述第二凹槽315的宽度对应油墨层宽度，从而使得填充油墨后，油墨层的下表面与3D玻璃盖板31的相应端部的下表面平齐，不存在油墨断差。
进一步的实施例中，可以对开槽处理后的3D玻璃盖板31进行强化处理，具体为将其浸在400 oC以上熔融态KNO 3中3-10小时，玻璃表层的Na +离子与K +离子发生离子交换，由于K +离子半径大于Na +半径，从而在冷却过程中造成外层收缩较小而内层收缩较大，当冷却到常温后，玻璃便处于内层受拉外层受压的状态，使得玻璃表层形成压应力层，达到提高玻璃强度的目的。
关于步骤S24：对所述凹槽进行油墨填充，形成油墨层，请一并参考图2以及图3C，其中图3C为本申请第一实施例提供的油墨填充后的3D玻璃盖板的侧视图。具体的，可以利用曝光显影或智能喷涂+镭雕等手段对相应凹槽进行油墨填充，分别形成一第一油墨层316、及一第二油墨层317。所述第一油墨层316的厚度与所述第一凹槽314的深度相同，所述第一次油墨层316的宽度与所述第一凹槽314的宽度相同，因此在油墨填充后，所述第一油墨层316的下表面与所述3D玻璃盖板31的第一端部312的下表面平齐，不存在油墨断差；相应的，所述第二油墨层317的厚度与所述第二凹槽315的深度相同，所述第二油墨层317的宽度与所述第二凹槽315的宽度相同，因此在油墨填充后，所述第二油墨层317的下表面与所述3D玻璃盖板31的第二端部313的下表面平齐，不存在油墨断差。通过上述设置，使得曲面玻璃盖板30与显示模块贴合时不会形成气泡，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需另外开发新的涂布油墨层工艺，有效控制生产成本。
请再次参阅图3C，本申请还提供一种曲面玻璃盖板。所述曲面玻璃盖板30包括：一3D玻璃盖板31，所述3D玻璃盖板31的两个待涂油墨区分别设有第一凹槽314、及第二凹槽315；一第一油墨层316，填充于所述第一凹槽314内，所述第一油墨层316的厚度与所述第一凹槽314的深度相同，所述第一油墨层316的宽度与所述第一凹槽314的宽度相同；一第二油墨层317，填充于所述第二凹槽315内，所述第二油墨层317的厚度与所述第二凹槽315的深度相同，所述第二油墨层317的宽度与所述第二凹槽315的宽度相同；从而使得所述曲面玻璃盖板30与显示模块贴合时不会产生气泡。其中，所述3D玻璃盖板31包括视窗区311，以及位于视窗区311以外的第一端部312、及第二端部313。所述两个待涂油墨区分别位于所述视窗区311以外的第一端部312、及第二端部313的下表面，即所述第一凹槽314对应所述第一端部312、所述第二凹槽315对应所述第二端部313。
进一步的实施例中，所述3D玻璃盖板31为经过强化处理的强化玻璃盖板。
请参阅图4，本申请柔性显示设备第一实施例的层状结构示意图。所述柔性显示设备包括曲面玻璃盖板30及柔性触控显示模块40，所述曲面玻璃盖板30与所述柔性触控显示模块40之间采用透明光学胶41真空贴合；所述曲面玻璃盖板30采用如图3C所示的曲面玻璃盖板30。所述曲面玻璃盖板30的第一、第二油墨层316、317起到遮光、美化作用。所述柔性显示设备包括但不限于手机、平板电脑、数码相机或笔记本电脑等电子设备。
进一步的实施例中，所述曲面玻璃盖板30的3D玻璃盖板31为经过强化处理的强化玻璃盖板，作用为保护所述柔性触控显示模块40，且可以抗刮擦、抵抗外部冲击。
进一步的实施例中，所述透明光学胶41可以为亚克力胶材或硅胶，保证光线透过率的情况下粘结所述曲面玻璃盖板30与所述柔性触控显示模块40，且可以吸收冲击能量。
需要说明的是，所述柔性触控显示模块40包括触控显示所必需的各组件，例如包括依次层叠设置的OLED层401、触控(TP)层402以及偏光片403等。图中示出所述曲面玻璃盖板30与所述柔性触控显示模块40最上层的偏光片403间采用一层透明光学胶41进行粘合。
本申请柔性显示设备，曲面玻璃盖板的油墨层的下表面与3D玻璃盖板对应的下表面平齐，不存在油墨断差，从而使得贴合时不会形成气泡，贴合效果佳，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需开发新的涂布油墨层工艺，有效控制生产成本。且由于不存在油墨断差，故而曲面玻璃盖板与柔性触控显示模块贴合时采用的透明光学胶厚度降低，可以降低到现有为克服油墨断差影响所采用的透明光学胶厚度的30%左右，从而有效降低柔性显示设备整机厚度，满足产品的进一步轻薄化要求，从而带来更好的用户体验。
请一并参阅图2及图5A-图5C，其中，图5A-图5C为本申请曲面玻璃盖板第二实施例的制作流程图。
关于步骤S21：提供一盖板主体，请一并参考图2以及图5A，其中图5A为本申请第二实施例提供的2.5D玻璃盖板的侧视图。也即提供一2.5D玻璃盖板51作为所述曲面玻璃盖板50的盖板主体。其中，2.5D玻璃盖板51包括一视窗区511，以及位于所述视窗区511以外的一第一端部512、及一第二端部513。
关于步骤S22：对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽，请一并参考图2以及图5B，其中图5B为本申请第二实施例提供的开槽处理后的2.5D玻璃盖板的侧视图。具体的，可以用刻蚀、电子束光刻(EBL)、聚焦离子束(FIB)或激光等手段对2.5D玻璃盖板51的两个待涂油墨区分别进行开槽处理，在所述待涂油墨区形成一第一凹槽514、及一第二凹槽515。其中，所述第一凹槽514及所述第二凹槽515的深度对应油墨层厚度，所述第一凹槽514及所述第二凹槽515的宽度对应油墨层宽度，从而使得填充油墨后，油墨层的下表面与2.5D玻璃盖板51的相应端部的下表面平齐，不存在油墨断差。
进一步的实施例中，可以对开槽处理后的2.5D玻璃盖板51进行强化处理，具体为将其浸在400 oC以上熔融态KNO 3中3-10小时，玻璃表层的Na +离子与K +离子发生离子交换，由于K +离子半径大于Na +半径，从而在冷却过程中造成外层收缩较小而内层收缩较大，当冷却到常温后，玻璃便处于内层受拉，外层受压的状态，使得玻璃表层形成压应力层，达到提高玻璃强度的目的。
关于步骤S24：对所述凹槽进行油墨填充，形成油墨层，请一并参考图2以及图5C，其中图5C为本申请第二实施例提供的油墨填充后的2.5D玻璃盖板的侧视图。具体的，可以利用曝光显影或智能喷涂+镭雕等手段对相应凹槽进行油墨填充，分别形成一第一油墨层516、及一第二油墨层517。所述第一油墨层516的厚度与所述第一凹槽514的深度相同，所述第一次油墨层516的宽度与所述第一凹槽514的宽度相同，因此在油墨填充后，所述第一油墨层516的下表面与所述2.5D玻璃盖板51的第一端部512的下表面平齐，不存在油墨断差；相应的，所述第二油墨层517的厚度与所述第二凹槽515的深度相同，所述第二油墨层517的宽度与所述第二凹槽515的宽度相同，因此在油墨填充后，所述第二油墨层517的下表面与所述2.5D玻璃盖板51的第二端部513的下表面平齐，不存在油墨断差。通过上述设置，使得曲面玻璃盖板50与显示模块贴合时不会形成气泡，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需另外开发新的涂布油墨层工艺，有效控制生产成本。
请再次参阅图5C，本申请还提供一种曲面玻璃盖板。所述曲面玻璃盖板50包括：一2.5D玻璃盖板51，所述2.5D玻璃盖板51的两个待涂油墨区分别设有第一凹槽514、及第二凹槽515；第一油墨层516，填充于所述第一凹槽514内，所述第一油墨层516的厚度与所述第一凹槽514的深度相同，所述第一油墨层516的宽度与所述第一凹槽514的宽度相同；第二油墨层517，填充于所述第二凹槽515内，所述第二油墨层517的厚度与所述第二凹槽515的深度相同，所述第二油墨层517的宽度与所述第二凹槽515的宽度相同；从而使得所述曲面玻璃盖板50与显示模块贴合时不会产生气泡。其中，所述2.5D玻璃盖板51包括视窗区511，以及位于视窗区511以外的第一端部512、及第二端部513。所述两个待涂油墨区分别位于所述视窗区511以外的第一端部512、及第二端部513的下表面，即所述第一凹槽514对应所述第一端部512、所述第二凹槽515对应所述第二端部513。
进一步的实施例中，所述2.5D玻璃盖板51为经过强化处理的强化玻璃盖板。
请参阅图6，本申请柔性显示设备第二实施例的层状结构示意图。所述柔性显示设备包括曲面玻璃盖板50及柔性触控显示模块60，所述曲面玻璃盖板50与所述柔性触控显示模块60之间采用透明光学胶61真空贴合；所述曲面玻璃盖板50采用如图5C所示的曲面玻璃盖板50。所述曲面玻璃盖板50的第一、第二油墨层516、517起到遮光、美化作用。所述柔性显示设备包括但不限于手机、平板电脑、数码相机或笔记本电脑等电子设备。
进一步的实施例中，所述曲面玻璃盖板50的2.5D玻璃盖板51为经过强化处理的强化玻璃盖板，作用为保护所述柔性触控显示模块60，且可以抗刮擦、抵抗外部冲击。
进一步的实施例中，所述透明光学胶61可以为亚克力胶材或硅胶，保证光线透过率的情况下粘结所述曲面玻璃盖板50与所述柔性触控显示模块60，且可以吸收冲击能量。
需要说明的是，所述柔性触控显示模块60包括触控显示所必需的各组件，例如包括依次层叠设置的OLED层601、触控(TP)层602以及偏光片603等。图中示出所述曲面玻璃盖板50与所述柔性触控显示模块60最上层的偏光片603间采用一层透明光学胶61进行粘合。
本申请柔性显示设备，曲面玻璃盖板的油墨层的下表面与2.5D玻璃盖板对应的下表面平齐，不存在油墨断差，从而使得真空贴合时不会形成气泡，贴合效果佳，改善产品良率。同时，凹槽处油墨层填充工艺可采用现有涂布工艺，无需另外开发新的涂布油墨层工艺，有效控制生产成本。且由于不存在油墨断差，故而曲面玻璃盖板与柔性触控显示模块贴合时采用的透明光学胶厚度降低，可以降低到现有为克服油墨断差影响所采用的透明光学胶厚度的30%左右，从而有效降低柔性显示设备整机厚度，满足产品的进一步轻薄化要求，从而带来更好的用户体验。
 工业实用性
本申请的主题可以在工业中制造和使用，具备工业实用性。

Claims (17)

  1. 一种曲面玻璃盖板的制作方法，其中，所述制作方法包括以下步骤：提供一盖板主体；采用电子束光刻、聚焦离子束或激光对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽；对开槽处理后的所述盖板主体进行强化处理；利用曝光显影方式或智能喷涂结合镭雕方式对所述凹槽进行油墨填充，形成油墨层，并且其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
  2. 如权利要求1所述的制作方法，其中，所述的提供一盖板主体的步骤进一步包括：提供一2.5D玻璃盖板作为所述盖板主体。
  3. 如权利要求1所述的制作方法，其中，所述的提供一盖板主体的步骤进一步包括：对一2D玻璃进行热弯成型，形成一3D玻璃盖板作为所述盖板主体。
  4. 如权利要求1所述的制作方法，其中，所述盖板主体包括两个待涂油墨区，所述两个待涂油墨区分别位于所述盖板主体的视窗区以外的两个端部的下表面。
  5. 如权利要求1所述的制作方法，其中，所述的对开槽处理后的所述盖板主体进行强化处理的步骤进一步包括：将开槽处理后的所述盖板主体浸在400 oC以上熔融态硝酸钾中3-10小时，以使所述盖板主体的玻璃表层形成压应力层。
  6. 一种曲面玻璃盖板的制作方法，其中，所述制作方法包括以下步骤：提供一盖板主体；对所述盖板主体的至少一待涂油墨区进行开槽处理，以在所述待涂油墨区形成凹槽；对所述凹槽进行油墨填充，形成油墨层，并且其中，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
  7. 如权利要求6所述的制作方法，其中，所述的提供一盖板主体的步骤进一步包括：提供一2.5D玻璃盖板作为所述盖板主体。
  8. 如权利要求6所述的制作方法，其中，所述的提供一盖板主体的步骤进一步包括：对一2D玻璃进行热弯成型，形成一3D玻璃盖板作为所述盖板主体。
  9. 如权利要求6所述的制作方法，其中，所述的对所述盖板主体的至少一待涂油墨区进行开槽处理的步骤进一步包括：采用电子束光刻、聚焦离子束或激光对所述待涂油墨区进行开槽处理。
  10. 如权利要求6所述的制作方法，其中，所述盖板主体包括两个待涂油墨区，所述两个待涂油墨区分别位于所述盖板主体的视窗区以外的两个端部的下表面。
  11. 如权利要求6所述的制作方法，其中，所述的对所述凹槽进行油墨填充的步骤进一步包括：利用曝光显影方式或智能喷涂结合镭雕方式对所述凹槽进行油墨填充。
  12. 如权利要求6所述的制作方法，其中，所述的对所述盖板主体的至少一待涂油墨区进行开槽处理的步骤之后进一步包括：对开槽处理后的所述盖板主体进行强化处理。
  13. 如权利要求12所述的制作方法，其中，所述的对开槽处理后的所述盖板主体进行强化处理的步骤进一步包括：将开槽处理后的所述盖板主体浸在400 oC以上熔融态硝酸钾中3-10小时，以使所述盖板主体的玻璃表层形成压应力层。
  14. 一种曲面玻璃盖板，其中，包括：一盖板主体，所述盖板主体具有至少一待涂油墨区，每一所述待涂油墨区设有一凹槽；至少一油墨层，填充于所述凹槽内，所述油墨层的厚度与所述凹槽的深度相同，所述油墨层的宽度与所述凹槽的宽度相同，从而使得所述曲面玻璃盖板与一显示模块贴合时不会产生气泡。
  15. 如权利要求14所述的曲面玻璃盖板，其中，所述盖板主体为2.5D玻璃盖板或3D玻璃盖板。
  16. 如权利要求14所述的曲面玻璃盖板，其中，所述盖板主体为强化玻璃盖板。
  17. 如权利要求14所述的曲面玻璃盖板，其中，所述盖板主体包括两个待涂油墨区，所述两个待涂油墨区分别位于所述盖板主体的视窗区以外的两个端部的下表面。
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