WO2019205478A1 - 柔性盖板及柔性显示装置 - Google Patents

柔性盖板及柔性显示装置 Download PDF

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Publication number
WO2019205478A1
WO2019205478A1 PCT/CN2018/107142 CN2018107142W WO2019205478A1 WO 2019205478 A1 WO2019205478 A1 WO 2019205478A1 CN 2018107142 W CN2018107142 W CN 2018107142W WO 2019205478 A1 WO2019205478 A1 WO 2019205478A1
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Prior art keywords
brightness
layer
transparent substrate
flexible
flexible cover
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PCT/CN2018/107142
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English (en)
French (fr)
Inventor
肖士元
Original Assignee
武汉华星光电技术有限公司
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Priority to US16/308,478 priority Critical patent/US20210192981A1/en
Publication of WO2019205478A1 publication Critical patent/WO2019205478A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/03—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers with respect to the orientation of features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/181—Enclosures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/51—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/536—Hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/546—Flexural strength; Flexion stiffness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/584—Scratch resistance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays

Definitions

  • the present invention relates to the field of display technologies, and in particular, to a flexible cover plate and a flexible display device.
  • LCD liquid crystal display device
  • PDP plasma display panel device
  • OLED organic light emitting display
  • liquid crystal display devices and organic light-emitting display devices including thin film transistors have advantages of good resolution, color display, and good image quality, they are widely used for display devices of televisions, notebook computers, tablet computers, and desktop computers.
  • these liquid crystal display devices and organic light emitting display devices including thin film transistors have been developed as flexible display devices having flexibility.
  • the flexible display device uses a flexible cover that can be bent.
  • the flexible cover deforms with the optical adhesive layer, and the surface hardness thereof is significantly reduced, which cannot meet the requirements of the display.
  • the optical adhesive layer is a viscoelastic material, has no pressure resistance, and is easily deformed after being subjected to pressure, causing fine scratches on the surface of the flexible cover plate due to sagging, reducing the surface hardness of the entire display device.
  • the shape of the flexible display device is generally curved, the flexible display device has a wide viewing angle and a low center brightness, which often affects the customer experience. Therefore, there is a need for a flexible cover that can solve the above problems. .
  • the object of the present invention is to provide a flexible cover plate which has good brightness enhancement and scratch resistance and wear resistance, and effectively enhances the market competitiveness of the product.
  • Another object of the present invention is to provide a flexible display device, which can effectively improve the center brightness, has good scratch resistance and wear resistance, and effectively enhances the market competitiveness of the product.
  • the present invention provides a flexible cover plate comprising a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and a first brightness enhancing layer sequentially disposed on the other surface of the transparent substrate, a second brightness enhancing layer and an optical glue layer;
  • the first brightness enhancing layer and the second brightness enhancing layer are respectively configured to collect light in the first and second directions to increase a central brightness, the first and second directions being perpendicular to each other.
  • the first direction and the second direction are parallel to the transparent substrate.
  • the surface of the first brightness enhancement layer and the second brightness enhancement layer are respectively provided with a plurality of brightness enhancement microstructures, and the shape of the brightness enhancement microstructure is a triangular prism; in the first brightness enhancement layer, several shapes are triangular prisms
  • the brightening microstructure extends toward the second direction; and in the second brightness enhancing layer, a plurality of brightening microstructures having a triangular prism shape extend toward the first direction.
  • the transparent substrate is a transparent PI substrate.
  • the hardened layer is formed on the surface of the transparent substrate by a sputtering and evaporation process.
  • the present invention also provides a flexible display device comprising a flexible panel and a flexible cover plate disposed on the flexible panel;
  • the flexible cover plate comprises a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and a first brightness enhancing layer, a second brightness enhancing layer and an optical glue layer sequentially disposed on the other surface of the transparent substrate;
  • the first brightness enhancing layer and the second brightness enhancing layer are respectively configured to collect light in the first and second directions, and the first and second directions are perpendicular to each other.
  • the first direction and the second direction are parallel to the transparent substrate.
  • the surface of the first brightness enhancement layer and the second brightness enhancement layer are respectively provided with a plurality of brightness enhancement microstructures, and the shape of the brightness enhancement microstructure is a triangular prism; in the first brightness enhancement layer, several shapes are triangular prisms
  • the brightening microstructure extends toward the second direction; and in the second brightness enhancing layer, a plurality of brightening microstructures having a triangular prism shape extend toward the first direction.
  • the transparent substrate is a transparent PI substrate.
  • the hardened layer is formed on the transparent substrate by a sputtering and evaporation process.
  • the present invention provides a flexible cover plate comprising a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and a first brightness enhancing layer sequentially disposed on the other surface of the transparent substrate a second brightening layer and an optical adhesive layer;
  • the hardened layer has a scratch-resistant and wear-resistant effect, and can effectively protect the flexible cover from damage;
  • the first brightening layer and the second brightening layer are respectively used for Collecting light in the first and second directions, the first and second directions are perpendicular to each other, so that light passing through the two brightness enhancing layers can be gathered toward the center of the flexible cover, and the flexible cover is applied to the flexible display device Among them, it is possible to improve the center brightness of the flexible display device.
  • the present invention provides a flexible display device comprising the flexible cover plate, the flexible cover plate comprising a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and sequentially disposed on the other surface of the transparent substrate. a first brightening layer, a second brightening layer and an optical adhesive layer; the hardened layer has a scratch-resistant and wear-resistant effect, and can effectively protect the flexible cover from damage; the first brightening layer and the second brightening layer
  • the layers are respectively used for collecting light in the first and second directions, the first and second directions being perpendicular to each other, so that the light passing through the two brightening layers can be concentrated toward the center of the flexible cover, so the flexibility of the present invention
  • the display device has a high center brightness and good scratch resistance.
  • FIG. 1 is a schematic structural view of a flexible cover plate of the present invention
  • Figure 2 is a first direction view of the first brightness enhancing layer of the flexible cover of the present invention
  • Figure 3 is a second orientation view of the first brightness enhancing layer of the flexible cover of the present invention.
  • Figure 4 is a second orientation view of the brightness enhancing microstructure of the first brightness enhancing layer of the flexible cover of the present invention
  • Figure 5 is a first direction view of the second brightness enhancing layer of the flexible cover of the present invention.
  • Figure 6 is a second orientation view of the second brightness enhancing layer of the flexible cover of the present invention.
  • Figure 7 is a first perspective view of the brightness enhancing microstructure of the second brightness enhancing layer of the flexible cover of the present invention.
  • FIG. 8 is a schematic structural view of a flexible display device of the present invention.
  • Figure 9 is a schematic view showing the bending of the flexible display device of the present invention.
  • the present invention provides a flexible cover 10 including a transparent substrate 12 , a hardened layer 11 disposed on a surface of the transparent substrate 12 , and a first layer disposed on the other surface of the transparent substrate 12 .
  • the hard layer 11 has the function of scratch resistance and wear resistance, and can effectively protect the flexible cover 10 from damage;
  • the optical glue layer 18 has good Adhesion, so that the flexible cover 10 can be firmly adhered to the flexible panel through the optical adhesive layer 18.
  • the first brightness enhancing layer 14 and the second brightness enhancing layer 16 are respectively configured to collect light in the first and second directions to increase the central brightness, and the first and second directions are perpendicular to each other.
  • the first direction and the second direction are parallel to the transparent substrate 12.
  • the flexible cover 10 of the present invention can collect the first direction light toward the center of the flexible cover 10 through the first brightness enhancement layer 14 , and the second direction through the second brightness enhancement layer 16 .
  • the light is collected toward the center of the flexible cover 10, and the first and second directions are perpendicular to each other, so that the light passing through the two brightening layers can be gathered toward the center of the flexible cover 10, and the flexible cover 10 is applied to the flexible In the display device, it is possible to improve the center luminance of the flexible display device.
  • the first brightness enhancing layer 14 and the second brightness enhancing layer 16 are each provided with a plurality of brightness-increasing microstructures, and the brightness-enhancing microstructures are triangular prisms.
  • a concentrating effect can be achieved, such that light converges toward the center of the first brightness enhancing layer 14 in the first direction; and in the second brightness enhancing layer 16, a plurality of brightness-increasing microstructures having a triangular prism shape extend toward the first direction
  • the concentrating effect can be achieved by a plurality of brightening microstructures extending in the first direction on the second brightness enhancing layer 16 such that the light converges toward the center of the second brightness enhancing layer 16 in the second direction.
  • the brightness-increasing microstructures of the triangular prism shape are protruded away from the optical glue layer 18.
  • the brightness-increasing microstructure can also be designed as a convex structure of other shapes. As long as the convex-like lens structure with low middle and high sides is satisfied, a concentrating effect can be achieved.
  • the shape of the brightness-increasing microstructure can be a trapezoidal body. .
  • the shape of the brightness-increasing microstructure is a trapezoidal body
  • a plurality of brightness-increasing microstructures having a shape of a trapezoidal body extend in a second direction, and pass through the plurality of first brightness-increasing layers 14
  • the brightness-increasing microstructure extending in the second direction can achieve a condensing effect, such that the light converges toward the center of the first brightness-enhancing layer 14 in the first direction; in the second brightness-increasing layer 16, the plurality of shapes are trapezoidal
  • the brightness-increasing microstructure extends in a first direction, and a plurality of brightness-increasing microstructures extending in the first direction on the second brightness-increasing layer 16 can achieve a light collecting effect, so that the light is directed to the second brightness enhancing layer 16 in the second direction. The center on the gathering.
  • the brightness enhancing layer 14 and the second brightness enhancing layer 16 the brightness
  • the transparent substrate 12 is a transparent polyimide (PI) substrate.
  • PI transparent polyimide
  • the hardened layer 11 is formed on the transparent substrate 12 by a sputtering and evaporation process. Since the transparent substrate 12 is a transparent PI substrate and the PI has high temperature resistance, it is suitable for forming the hardened layer 11 on the transparent substrate 12 by sputtering and vapor deposition.
  • the flexible cover 10 includes a transparent substrate 12, a hardened layer 11 disposed on a surface of the transparent substrate 12, and a first brightness enhancing layer 14 and a second brightness enhancing layer sequentially disposed on the other surface of the transparent substrate 12. 16 and the optical adhesive layer 18; the hardened layer 11 has a scratch-resistant and wear-resistant effect, and can effectively protect the flexible cover 10 from damage; the first brightening layer 14 and the second brightening layer 16 are respectively used for Collecting light in the first and second directions, the first and second directions are perpendicular to each other, so that light passing through the two brightness enhancing layers can be concentrated toward the center of the flexible cover 10, and the flexible cover 10 is applied to the flexible In the display device, it is possible to improve the center luminance of the flexible display device.
  • the present invention further provides a flexible display device, comprising: a flexible panel 20 and a flexible cover plate disposed on the flexible panel 20 10;
  • the flexible cover 10 includes a transparent substrate 12, a hardened layer 11 disposed on a surface of the transparent substrate 12, and a first brightness enhancing layer 14 disposed on the other surface of the transparent substrate 12, and a second brightening layer.
  • the first brightness enhancing layer 14 and the second brightness enhancing layer 16 are respectively configured to collect light in the first and second directions to increase the central brightness, and the first and second directions are perpendicular to each other.
  • the first direction and the second direction are parallel to the transparent substrate 12.
  • the flexible cover 10 of the present invention can collect the first direction light toward the center of the flexible cover 10 through the first brightness enhancement layer 14 , and the second direction through the second brightness enhancement layer 16 .
  • the light is collected toward the center of the flexible cover 10, and the first and second directions are perpendicular to each other, so that the light passing through the two brightening layers can be concentrated toward the center of the flexible cover 10, which is advantageous for improving the central brightness of the flexible display device. .
  • the first brightness enhancing layer 14 and the second brightness enhancing layer 16 are each provided with a plurality of brightness-increasing microstructures, and the brightness-enhancing microstructures are triangular prisms.
  • a concentrating effect can be achieved, such that light converges toward the center of the first brightness enhancing layer 14 in the first direction; and in the second brightness enhancing layer 16, a plurality of brightness-increasing microstructures having a triangular prism shape extend toward the first direction
  • a plurality of brightening microstructures extending in the first direction on the second brightness enhancing layer 16 can achieve a light collecting effect, so that the light is concentrated toward the center of the second brightness enhancing layer 16 in the second direction, thereby effectively improving the flexible display.
  • the center brightness of the device in detail, in the first brightness enhancing layer 14 and the second brightness enhancing layer 16, the brightness-increasing microstructures of the triangular prism shape are protruded
  • the brightness-increasing microstructure can also be designed as a convex structure of other shapes. As long as the convex-like lens structure with low middle and high sides is satisfied, a concentrating effect can be achieved.
  • the shape of the brightness-increasing microstructure can be a trapezoidal body. .
  • the shape of the brightness-increasing microstructure is a trapezoidal body
  • a plurality of brightness-increasing microstructures having a shape of a trapezoidal body extend in a second direction, and pass through the plurality of first brightness-increasing layers 14
  • the brightness-increasing microstructure extending in the second direction can achieve a condensing effect, such that the light converges toward the center of the first brightness-enhancing layer 14 in the first direction; in the second brightness-increasing layer 16, the plurality of shapes are trapezoidal
  • the brightness-increasing microstructure extends in a first direction, and a plurality of brightness-increasing microstructures extending in the first direction on the second brightness-increasing layer 16 can achieve a light collecting effect, so that the light is directed to the second brightness enhancing layer 16 in the second direction. The center on the gathering.
  • the brightness enhancing layer 14 and the second brightness enhancing layer 16 the brightness
  • the transparent substrate 12 is a transparent PI substrate.
  • the hardened layer 11 is formed on the transparent substrate 12 by a sputtering and evaporation process. Since the transparent substrate 12 is a transparent PI substrate and the PI has high temperature resistance, it is suitable for forming the hardened layer 11 on the transparent substrate 12 by sputtering and vapor deposition.
  • the surface hardness and pressure resistance of the flexible display device are high, and fine scratches or scratches are less likely to occur, and
  • the first brightness enhancement layer 14 and the second brightness enhancement layer 16 are provided with microstructures that are respectively collected in two mutually perpendicular directions. Even if the light-emitting surface of the flexible display device is curved, the center brightness of the flexible display device can be ensured. Will not drop, effectively improve the user experience.
  • the flexible cover 10 of the flexible display device includes a transparent substrate 12, a hardened layer 11 disposed on a surface of the transparent substrate 12, and a first brightness enhancing layer 14 disposed on the other surface of the transparent substrate 12,
  • the hardened layer 11 has a scratch-resistant and wear-resistant effect, and can effectively protect the flexible cover 10 from damage;
  • the first brightness enhancing layer 14 and the second brightness enhancing layer 16 For collecting light in the first and second directions respectively, the first and second directions are perpendicular to each other, so that the light passing through the two brightening layers can be gathered toward the center of the flexible cover 10, which is beneficial to improve the flexible display.
  • the center brightness of the device is beneficial to improve the flexible display.
  • the flexible cover of the present invention comprises a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and a first brightening layer and a second brightening layer sequentially disposed on the other surface of the transparent substrate. a layer and an optical adhesive layer; the hardened layer has a scratch-resisting effect, and can effectively protect the flexible cover from damage; the first brightening layer and the second brightening layer are respectively used in the first and second layers Collecting light in the direction, the first and second directions are perpendicular to each other, so that the light passing through the two brightening layers can be concentrated toward the center of the flexible cover plate, and the flexible cover plate is applied to the flexible display device, which can be advantageous Improve the center brightness of the flexible display device.
  • the flexible display device of the present invention comprises the flexible cover plate, the flexible cover plate comprises a transparent substrate, a hardened layer disposed on a surface of the transparent substrate, and a first brightening layer sequentially disposed on the other surface of the transparent substrate a layer, a second brightness enhancing layer and an optical glue layer;
  • the hardened layer has a scratch-resistant and wear-resistant effect, and can effectively protect the flexible cover plate from damage;
  • the first brightness enhancement layer and the second brightness enhancement layer are respectively used for Collecting light in the first and second directions, the first and second directions are perpendicular to each other, so that light passing through the two brightening layers can be concentrated toward the center of the flexible cover, and thus the central brightness of the flexible display device of the present invention High and has good scratch resistance.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Power Engineering (AREA)
  • Electroluminescent Light Sources (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种柔性盖板及柔性显示装置，柔性盖板（10）包括透明基材（12）、设于透明基材（12）一表面的硬化层（11）、及依次设于透明基材（12）另一表面的第一增亮层（14）、第二增亮层（16）与光学胶层（18）；硬化层（11）具有防刮耐磨的作用，能够有效保护柔性盖板（10）不受损害；第一增亮层（14）、第二增亮层（16）分别用于在第一、第二方向上集光，第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板（10）的中心聚集，将柔性盖板（10）应用于柔性显示装置中，能够有利于提高柔性显示装置的中心亮度。柔性显示装置包括柔性盖板（10），中心亮度较高且具有良好的防刮痕性能。

Description

柔性盖板及柔性显示装置 技术领域
本发明涉及显示技术领域，尤其涉及一种柔性盖板及柔性显示装置。
背景技术
随着以信息为导向的社会的进步，对于显示图像的显示装置的各种要求日益增加。近来，存在各种显示装置：液晶显示装置(LCD)、等离子体显示面板装置(PDP)、有机发光显示(OLED)装置等。
由于包括薄膜晶体管的液晶显示装置和有机发光显示装置具有良好分辨率、彩色显示、以及良好图像质量的优点，所以其被广泛用于电视机、笔记本电脑、平板电脑以及台式电脑的显示装置。另外，包括薄膜晶体管的这些液晶显示装置和有机发光显示装置已经被开发成具有柔性的柔性显示装置。
与一般硬性屏幕的玻璃盖板不同，柔性显示装置所采用的是可弯折的柔性盖板。当柔性盖板下面有较软材料时，随着外力的加入，柔性盖板随光学胶层发生形变，其表面硬度明显下降，不能满足显示器的需求。究其原因主要是因为光学胶层为粘弹性材料，无抗压性，其受到压力后容易产生永久变形，造成柔性盖板表面因下陷而出现细微破痕，降低整个显示装置的表面硬度。另外，由于柔性显示装置的形状通常为曲面状，故柔性显示装置视角较宽，而中心亮度较低，这往往会影响客户的使用体验，因此，亟需一种能够解决上述问题的柔性盖板。
发明内容
本发明的目的在于提供一种柔性盖板，具有良好的增亮作用及防刮耐磨性能，有效增强产品的市场竞争力。
本发明的目的还在于提供一种柔性显示装置，能够有效提高中心亮度，且具有良好的防刮耐磨性能，有效增强产品的市场竞争力。
为实现上述目的，本发明提供了一种柔性盖板，包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；
所述第一增亮层与第二增亮层分别用于在第一与第二方向上集光以提高中心亮度，所述第一与第二方向相互垂直。
所述第一方向与第二方向平行于所述透明基材。
所述第一增亮层与第二增亮层表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱；所述第一增亮层中，数个形状为三棱柱的增亮微结构朝第二方向延伸；所述第二增亮层中，数个形状为三棱柱的增亮微结构朝第一方向延伸。
所述透明基材为透明PI基材。
所述硬化层通过溅镀与蒸镀制程形成于所述透明基材表面上。
本发明还提供了一种柔性显示装置，包括柔性面板及设于所述柔性面板上的柔性盖板；
所述柔性盖板包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；
所述第一增亮层与第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直。
所述第一方向与第二方向平行于所述透明基材。
所述第一增亮层与第二增亮层表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱；所述第一增亮层中，数个形状为三棱柱的增亮微结构朝第二方向延伸；所述第二增亮层中，数个形状为三棱柱的增亮微结构朝第一方向延伸。
所述透明基材为透明PI基材。
所述硬化层通过溅镀与蒸镀制程形成于所述透明基材上。
本发明的有益效果：本发明提供的一种柔性盖板，包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；所述硬化层具有防刮耐磨的作用，能够有效保护柔性盖板不受损害；所述第一增亮层、第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板的中心聚集，将该柔性盖板应用于柔性显示装置中，能够有利于提高柔性显示装置的中心亮度。本发明提供的一种柔性显示装置，包括上述柔性盖板，所述柔性盖板包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；所述硬化层具有防刮耐磨的作用，能够有效保护柔性盖板不受损害；所述第一增亮层、第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板的中心聚集，因此本发明的柔性显示装置中心亮度较高且具有良好的防刮痕性能。
附图说明
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
附图中，
图1为本发明的柔性盖板的结构示意图；
图2为本发明的柔性盖板的第一增亮层的第一方向的视图；
图3为本发明的柔性盖板的第一增亮层的第二方向的视图；
图4为本发明的柔性盖板的第一增亮层的增亮微结构的第二方向的视图；
图5为本发明的柔性盖板的第二增亮层的第一方向的视图；
图6为本发明的柔性盖板的第二增亮层的第二方向的视图；
图7为本发明的柔性盖板的第二增亮层的增亮微结构的第一方向的视图；
图8为本发明的柔性显示装置的结构示意图；
图9为本发明的柔性显示装置弯折的示意图。
具体实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图1，本发明提供一种柔性盖板10，包括透明基材12、设于所述透明基材12一表面的硬化层11、及依次设于透明基材12另一表面的第一增亮层14、第二增亮层16与光学胶层18；所述硬化层11具有防刮耐磨的作用，能够有效保护柔性盖板10不受损害；所述光学胶层18具有良好的黏着力，因此能够通过光学胶层18将柔性盖板10牢固地黏着于柔性面板上。
所述第一增亮层14、第二增亮层16分别用于在第一、第二方向上集光以提高中心亮度，所述第一、第二方向相互垂直。
具体地，所述第一方向与第二方向平行于所述透明基材12。
如图2至图7所示，本发明的柔性盖板10通过第一增亮层14可以将第一方向的光往柔性盖板10中心聚集，通过第二增亮层16可以将第二方 向的光往柔性盖板10中心聚集，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板10的中心聚集，将该柔性盖板10应用于柔性显示装置中，能够有利于提高柔性显示装置的中心亮度。
具体地，如图4和图7所示，所述第一增亮层14与第二增亮层16表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱。进一步地，所述第一增亮层14中，数个形状为三棱柱的增亮微结构朝第二方向延伸，通过第一增亮层14上多个朝第二方向延伸的增亮微结构能够实现聚光效果，使得光线往第一增亮层14在第一方向上的中心聚集；所述第二增亮层16中，数个形状为三棱柱的增亮微结构朝第一方向延伸，通过第二增亮层16上多个朝第一方向延伸的增亮微结构能够实现聚光效果，使得光线往第二增亮层16在第二方向上的中心聚集。详细地，所述第一增亮层14和第二增亮层16中，形状为三棱柱的增亮微结构均朝远离光学胶层18的方向突出设置。
可以理解的，所述增亮微结构也可以设计为其他形状的凸起结构，只要满足中间高两边低的类凸透镜结构，即可以实现聚光效果，例如增亮微结构的形状可采用梯形体。当所述增亮微结构的形状为梯形体时，所述一增亮层14中，数个形状为梯形体的增亮微结构朝第二方向延伸，通过第一增亮层14上多个朝第二方向延伸的增亮微结构能够实现聚光效果，使得光线往第一增亮层14在第一方向上的中心聚集；所述第二增亮层16中，数个形状为梯形体的增亮微结构朝第一方向延伸，通过第二增亮层16上多个朝第一方向延伸的增亮微结构能够实现聚光效果，使得光线往第二增亮层16在第二方向上的中心聚集。详细地，所述第一增亮层14和第二增亮层16中，形状为梯形体的增亮微结构均朝远离光学胶层18的方向突出设置。
具体地，所述透明基材12为透明聚酰亚胺(PI)基材。
具体地，所述硬化层11通过溅镀与蒸镀制程形成于所述透明基材12上。由于所述透明基材12为透明PI基材，PI耐高温性能较好，故适用于在透明基材12上通过溅镀与蒸镀制程形成硬化层11。
上述柔性盖板10包括透明基材12、设于所述透明基材12一表面的硬化层11、及依次设于透明基材12另一表面的第一增亮层14、第二增亮层16与光学胶层18；所述硬化层11具有防刮耐磨的作用，能够有效保护柔性盖板10不受损害；所述第一增亮层14、第二增亮层16分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板10的中心聚集，将该柔性盖板10应用于柔性显示装置中，能够有利于提高柔性显示装置的中心亮度。
基于上述柔性盖板10，请参阅图8并结合图1至图7，本发明还提供一种柔性显示装置，其特征在于，包括柔性面板20及设于所述柔性面板20上的柔性盖板10；
所述柔性盖板10包括透明基材12、设于所述透明基材12一表面的硬化层11、及依次设于透明基材12另一表面的第一增亮层14、第二增亮层16与光学胶层18；所述硬化层11具有防刮耐磨的作用，能够有效保护柔性盖板10不受损害，进而间接起到保护柔性面板20的作用；所述光学胶层18具有良好的黏着力，因此能够通过光学胶层18将柔性盖板10牢固地黏着于柔性面板20上。
所述第一增亮层14、第二增亮层16分别用于在第一、第二方向上集光以提高中心亮度，所述第一、第二方向相互垂直。
具体地，所述第一方向与第二方向平行于所述透明基材12。
如图2至图7所示，本发明的柔性盖板10通过第一增亮层14可以将第一方向的光往柔性盖板10中心聚集，通过第二增亮层16可以将第二方向的光往柔性盖板10中心聚集，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板10的中心聚集，有利于提高柔性显示装置的中心亮度。
具体地，如图4和图7所示，所述第一增亮层14与第二增亮层16表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱。进一步地，所述第一增亮层14中，数个形状为三棱柱的增亮微结构朝第二方向延伸，通过第一增亮层14上多个朝第二方向延伸的增亮微结构能够实现聚光效果，使得光线往第一增亮层14在第一方向上的中心聚集；所述第二增亮层16中，数个形状为三棱柱的增亮微结构朝第一方向延伸，通过第二增亮层16上多个朝第一方向延伸的增亮微结构能够实现聚光效果，使得光线往第二增亮层16在第二方向上的中心聚集，从而有效提高柔性显示装置的中心亮度。详细地，所述第一增亮层14和第二增亮层16中，形状为三棱柱的增亮微结构均朝远离光学胶层18的方向突出设置。
可以理解的，所述增亮微结构也可以设计为其他形状的凸起结构，只要满足中间高两边低的类凸透镜结构，即可以实现聚光效果，例如增亮微结构的形状可采用梯形体。当所述增亮微结构的形状为梯形体时，所述一增亮层14中，数个形状为梯形体的增亮微结构朝第二方向延伸，通过第一增亮层14上多个朝第二方向延伸的增亮微结构能够实现聚光效果，使得光线往第一增亮层14在第一方向上的中心聚集；所述第二增亮层16中，数个形状为梯形体的增亮微结构朝第一方向延伸，通过第二增亮层16上多个 朝第一方向延伸的增亮微结构能够实现聚光效果，使得光线往第二增亮层16在第二方向上的中心聚集。详细地，所述第一增亮层14和第二增亮层16中，形状为梯形体的增亮微结构均朝远离光学胶层18的方向突出设置。
具体地，所述透明基材12为透明PI基材。
具体地，所述硬化层11通过溅镀与蒸镀制程形成于所述透明基材12上。由于所述透明基材12为透明PI基材，PI耐高温性能较好，故适用于在透明基材12上通过溅镀与蒸镀制程形成硬化层11。
如图9所示，当所述柔性显示装置弯折时，由于硬化层11的存在，所述柔性显示装置的表面硬度和抗压性较高，不容易出现细微破痕或刮痕，同时由于第一增亮层14与第二增亮层16表面设有分别在两相互垂直的方向上集光的微结构，即使柔性显示装置的出光面为曲面，也能够保证柔性显示装置的中心亮度也不会下降，有效提高用户的使用体验。
上述柔性显示装置的柔性盖板10包括透明基材12、设于所述透明基材12一表面的硬化层11、及依次设于透明基材12另一表面的第一增亮层14、第二增亮层16与光学胶层18；所述硬化层11具有防刮耐磨的作用，能够有效保护柔性盖板10不受损害；所述第一增亮层14、第二增亮层16分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板10的中心聚集，有利于提高柔性显示装置的中心亮度。
综上所述，本发明的柔性盖板包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；所述硬化层具有防刮耐磨的作用，能够有效保护柔性盖板不受损害；所述第一增亮层、第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板的中心聚集，将该柔性盖板应用于柔性显示装置中，能够有利于提高柔性显示装置的中心亮度。本发明的柔性显示装置包括上述柔性盖板，所述柔性盖板包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；所述硬化层具有防刮耐磨的作用，能够有效保护柔性盖板不受损害；所述第一增亮层、第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直，故能使通过两层增亮层的光向柔性盖板的中心聚集，因此本发明的柔性显示装置中心亮度较高且具有良好的防刮痕性能。
以上所述，对于本领域的普通技术人员来说，可以根据本发明的技术方案和技术构思作出其他各种相应的改变和变形，而所有这些改变和变形 都应属于本发明权利要求的保护范围。

Claims (10)

  1. 一种柔性盖板，包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；
    所述第一增亮层与第二增亮层分别用于在第一与第二方向上集光以提高中心亮度，所述第一与第二方向相互垂直。
  2. 如权利要求1所述的柔性盖板，其中，所述第一方向与第二方向平行于所述透明基材。
  3. 如权利要求2所述的柔性盖板，其中，所述第一增亮层与第二增亮层表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱；所述第一增亮层中，数个形状为三棱柱的增亮微结构朝第二方向延伸；所述第二增亮层中，数个形状为三棱柱的增亮微结构朝第一方向延伸。
  4. 如权利要求1所述的柔性盖板，其中，所述透明基材为透明PI基材。
  5. 如权利要求1所述的柔性盖板，其中，所述硬化层通过溅镀与蒸镀制程形成于所述透明基材表面上。
  6. 一种柔性显示装置，包括柔性面板及设于所述柔性面板上的柔性盖板；
    所述柔性盖板包括透明基材、设于所述透明基材一表面的硬化层、及依次设于透明基材另一表面的第一增亮层、第二增亮层与光学胶层；
    所述第一增亮层与第二增亮层分别用于在第一、第二方向上集光，所述第一、第二方向相互垂直。
  7. 如权利要求6所述的柔性显示装置，其中，所述第一方向与第二方向平行于所述透明基材。
  8. 如权利要求7所述的柔性显示装置，其中，所述第一增亮层与第二增亮层表面均设有数个增亮微结构，所述增亮微结构的形状为三棱柱；所述第一增亮层中，数个形状为三棱柱的增亮微结构朝第二方向延伸；所述第二增亮层中，数个形状为三棱柱的增亮微结构朝第一方向延伸。
  9. 如权利要求6所述的柔性显示装置，其中，所述透明基材为透明PI基材。
  10. 如权利要求6所述的柔性显示装置，其中，所述硬化层通过溅镀与蒸镀制程形成于所述透明基材上。
PCT/CN2018/107142 2018-04-25 2018-09-22 柔性盖板及柔性显示装置 WO2019205478A1 (zh)

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CN108538205A (zh) * 2018-04-25 2018-09-14 武汉华星光电技术有限公司 柔性盖板及柔性显示装置
CN110610660B (zh) * 2019-08-27 2021-11-02 武汉华星光电半导体显示技术有限公司 一种玻璃盖板、其制备方法及其应用
CN110767094A (zh) * 2019-11-12 2020-02-07 昆山工研院新型平板显示技术中心有限公司 一种柔性盖板和柔性显示屏

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