WO2017161919A1 - Film de substrat d'affichage flexible, son procédé de préparation, et dispositif d'affichage - Google Patents

Film de substrat d'affichage flexible, son procédé de préparation, et dispositif d'affichage Download PDF

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Publication number
WO2017161919A1
WO2017161919A1 PCT/CN2016/108986 CN2016108986W WO2017161919A1 WO 2017161919 A1 WO2017161919 A1 WO 2017161919A1 CN 2016108986 W CN2016108986 W CN 2016108986W WO 2017161919 A1 WO2017161919 A1 WO 2017161919A1
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Prior art keywords
film
glass film
glass
display substrate
plastic film
Prior art date
Application number
PCT/CN2016/108986
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English (en)
Chinese (zh)
Inventor
赵景罡
Original Assignee
大连东方科脉电子股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN201610172080.8A external-priority patent/CN105679774B/zh
Priority claimed from CN201620231266.1U external-priority patent/CN205564746U/zh
Application filed by 大连东方科脉电子股份有限公司 filed Critical 大连东方科脉电子股份有限公司
Priority to JP2019500711A priority Critical patent/JP6671536B2/ja
Publication of WO2017161919A1 publication Critical patent/WO2017161919A1/fr

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    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/76—Making of isolation regions between components
    • H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body

Definitions

  • the present invention relates to a flexible display substrate film, a method of manufacturing the same, and a display device.
  • liquid crystal display devices LCDs
  • organic light-emitting diode display devices OLEDs
  • electronic paper display devices E-paper
  • the substrate film having both flexibility and impact resistance becomes incapable of the curved surface display of a large panel for pursuing a realistic sense of presence, and the flexibility of a mobile terminal device pursuing portability, convenience, and safety. lack.
  • a substrate widely used in a flat panel display in the prior art is a glass substrate; if a flexible function is imparted to the glass substrate to realize a flexible display, it is possible to make the substrate have a bendable property by reducing the thickness of the substrate.
  • the thickness of the glass substrate is less than or equal to 0.1 mm
  • the glass substrate has the property of a flexible substrate film, that is, the glass film has a certain degree of flexibility similar to that of a plastic film.
  • the glass film still has serious problems such as weak bending and weak impact resistance, which causes the glass substrate film to be easily broken during the manufacturing process of the display screen, and the display screen is broken during use.
  • Occurrence especially transient over-bending, can easily cause hidden defects in the glass film, causing cracks during processing and use. Therefore, it has been one of the important research directions to study a plastic film which is excellent in impact resistance, light weight, and excellent in flexibility as a film for a display substrate instead of a glass substrate film.
  • a plastic film which is excellent in impact resistance, light weight, and excellent in flexibility as a film for a display substrate instead of a glass substrate film.
  • the negative effect of the thermal deformation of the film on the display is difficult to avoid, and the performance requirements of the display on the oxygen barrier and water vapor resistance of the film (such as oxygen barrier property and water vapor barrier property) are also Can not fufill. For this reason, it is common practice to vaporize a film made of an inorganic material on a plastic film.
  • JP-A-2004-82598 proposes a gas barrier laminate in which a metal oxide film and an organic material layer are laminated on a substrate.
  • a flexible film excellent in softness and good in gas barrier properties for example, comprising inorganic glass and a resin layer substrate disposed on both sides of the inorganic glass, and disposed on a side of the resin layer substrate on which the inorganic glass is not disposed
  • An inorganic film formed on at least one peripheral edge portion of the corresponding resin layer substrate; however, the film thus overlapped still has a problem that if the glass film is too thin, the impact resistance is insufficient to cause defects, and the glass film is too thick.
  • the bendability is significantly reduced. It can be seen that a simple superimposed glass film, a plastic film or a coating film cannot solve the problem that the bendability and impact resistance of the flexible substrate film are insufficient, and the defect is easily generated.
  • the present invention has been made in view of the above problems, and has developed a flexible display substrate film having excellent bendability and gas barrier properties, a method for manufacturing the same, and a display device.
  • a flexible display substrate film comprising:
  • the upper surface of the glass film has a plurality of convex portions
  • the lower surface of the plastic film has a plurality of recesses for accommodating the protrusions
  • a plurality of the convex portions are arranged horizontally, vertically, or in an array on the upper surface of the glass film;
  • the convex portion is provided within a predetermined distance from the edge of the glass film; when the plurality of convex portions are in the glass film When the upper surface is arranged in an array, the edge protrusion is disposed within a predetermined distance from the edge of the glass film;
  • the convex portions are semi-cylindrical, triangular prism-shaped, quadrangular prism-shaped, rectangular parallelepiped or square-shaped;
  • the convex portion is a quadrangular pyramid shape, a quadrangular prism shape, a spherical crown shape or a square shape;
  • the plastic film has a cover portion disposed opposite to an upper surface of the glass film and an edge portion disposed opposite to a side surface of the glass film;
  • the convex height of the convex portion and the concave depth of the concave portion are all less than or equal to 100 ⁇ m; the thickness of the portion of the glass film not including the convex portion is less than or equal to 100 ⁇ m;
  • the flexible display substrate film further includes:
  • An electrode disposed on a lower surface of the glass film and/or an upper surface of the plastic film;
  • a thin film transistor disposed on a lower surface of the glass film and/or an upper surface of the plastic film;
  • the width of the edge portion is greater than 100 ⁇ m; the thickness of the portion where the covering portion does not include the depressed portion is 400 ⁇ m or less; the surface waviness of the glass film is less than or equal to 0.5 ⁇ m/20 mm; the surface of the plastic film is rough The degree is less than or equal to 2 nm.
  • a method for manufacturing a flexible display substrate film for manufacturing the above-mentioned flexible display substrate film comprising the following steps:
  • the glass film and the plastic film are integrated by a lamination method; the heating temperature at the time of lamination is higher than the softening point temperature of the plastic film and lower than the softening point temperature of the glass film;
  • the plastic film composited with the glass film is laser cut to obtain an edge portion of a desired size.
  • a display device comprising the flexible display substrate film according to any one of the above;
  • the display device is a liquid crystal display device, an organic light emitting diode display device, or an electronic paper display device.
  • the flexible display substrate film provided by the present invention, the manufacturing method thereof, and the display device are simple in manufacturing process and have excellent gas barrier properties.
  • the drop resistance and impact resistance of the bendable display substrate film are significantly improved by reducing the weight of the flexible display substrate film and the cushioning and damping of the plastic film. .
  • the occurrence of edge defects is effectively avoided.
  • the design of the convex portion of the glass film and the concave portion of the plastic film can effectively avoid over-bending defects and improve the thermal shock resistance and mechanical impact capability of the flexible display substrate film; at the same time, the glass film can resist water vapor and oxygen.
  • the plastic film is used as the inner surface, the oxygen and moisture infiltrated from the edge of the plastic, because the design of the convex portion or the edge projection provided at the edge of the glass film is reduced or largely blocked, the flexible display substrate film also has Similar to the gas barrier properties of the glass substrate film.
  • the present invention does not require vacuum coating, and can realize low-cost manufacturing of a flexible display device. Compared with pure glass film, it has better bendability and display performance with the same life.
  • the convex portion of glass film and the depression of plastic film can suppress thermal expansion of the plastic film having a high linear expansion coefficient, and a display substrate film having a small linear expansion coefficient can be obtained by using a glass film as a display reference surface.
  • the fracture of the glass film is caused by minute defects of the surface caused by stress concentration, and the thinner the thickness of the glass film, the more easily the film is broken, so that it is difficult to achieve thinning of the glass film.
  • the gas barrier property of the display substrate film does not require a complicated film structure, and can avoid the defects of the glass film, improve the tolerance to the manufacturing process environment, and the manufacturing cost is low.
  • FIG. 1 is a schematic structural view of a display substrate film according to the present invention.
  • FIG. 2 is a schematic view showing the structure of a display substrate film according to an embodiment of the present invention.
  • FIG. 3 is a schematic view showing the structure of a glass film according to an embodiment of the present invention.
  • FIG. 4 is a schematic view showing the structure of a display substrate film according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view showing a glass film according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural view showing a glass film according to an embodiment of the present invention.
  • Fig. 7 is a schematic structural view showing a glass film according to an embodiment of the present invention.
  • FIG. 8 is a schematic view showing the structure of a display substrate film according to an embodiment of the present invention.
  • FIG. 9 is a schematic view showing the structure of a glass film according to an embodiment of the present invention.
  • Figure 10 is a flow chart of the manufacturing method of the present invention.
  • a flexible display substrate film comprises: a glass film 1 ;
  • the surface has a plurality of protrusions 10; a plastic film 2 covering the glass film 1; the lower surface of the plastic film 2 has a plurality of recesses 20 for accommodating the protrusions 10; further, a plurality of The raised portions 10 are laterally arranged, longitudinally arranged, or arranged in an array on the upper surface of the glass film 1; further, when the plurality of raised portions 10 are laterally arranged or longitudinally arranged on the upper surface of the glass film 1, at a distance Predetermined distance from the edge of the glass film 1
  • the raised portion 10 is disposed in a range; when the plurality of raised portions 10 are arranged in an array on the upper surface of the glass film 1, an edge protrusion 11 is provided within a predetermined distance from the edge of the glass film 1 Further,
  • Electrode configuration a thin film transistor of the lower surface of the glass film 1 and/or the upper surface of the plastic film 2; further, the width of the edge portion 22 is greater than 100 ⁇ m; the thickness of the portion of the covering portion 21 not including the depressed portion 20 is less than or equal to 400 ⁇ m;
  • the surface waviness of the glass film 1 is less than or equal to 0.5 ⁇ m / 20 mm; the surface roughness of the plastic film 2 is less than or equal to 2 nm;
  • FIG. 1 is a schematic structural view of the display substrate film of the present invention, and the pattern filling portions in FIG. The recessed portion 20 on the plastic film 2 and the raised portion 10 on the glass film 1 are.
  • a method for manufacturing a flexible display substrate film as shown in FIG. 10 for manufacturing the above-mentioned flexible display substrate film comprising the following steps:
  • the glass film 1 and the plastic film 2 are integrated by a lamination method; the heating temperature at the time of lamination is higher than the softening point temperature of the plastic film 2 and lower than the softening point temperature of the glass film 1;
  • the plastic film 2 integrated with the glass film 1 is laser cut to obtain the edge portion 22 of a desired size.
  • a display device comprising the flexible display substrate film according to any one of the above;
  • the display device is a liquid crystal display device, an organic light emitting diode display device, or an electronic paper display device.
  • the bending property of the flexible display substrate film provided by the present invention the material of the glass film 1, the material of the plastic film 2, the thickness of the glass film 1, the thickness of the plastic film 2, the shape of the convex portion 10, and the convexity
  • the distribution density of the starting portion 10 is directly related. Specifically, for the glass film 1, the thicker the glass film 1 is, the more difficult it is to bend, the heavier the weight, and the less likely to be dominant after being impacted by an external force.
  • the thickness of the glass film 1 is not necessary for improving the gas barrier property because even the glass film 1 having a thickness of 1 ⁇ m has a very high gas barrier ability; although the convex portion on the glass film 1 is increased
  • the distribution density of 10 increases the weight of the glass film 1, but this has a limited effect on the bendability of the display substrate film; for the plastic film 2, the thickness of the plastic film 2 is increased.
  • the weight will also increase, but it is advantageous for improving the mechanical impact resistance of the glass film 1, and the water blocking performance and the oxygen barrier property are improved.
  • the plastic film 2 Since the glass film 1 has sufficient gas barrier properties and water resistance, the plastic film 2 The thickness is only considered to be resistant to mechanical impact; in addition, the increase in the thickness of the plastic film 2 causes the transmittance of the display substrate to decrease, which offsets the bendable Display means efforts to reduce the film thickness of the substrate of the display.
  • a thin glass film 1 in order to improve the water blocking performance and gas barrier performance of the display substrate film, only a thin glass film 1 can be used, and the glass film 1 has a good bendability as the thickness is reduced.
  • the glass film 1 and the plastic film 2 are simply superimposed, it is difficult to avoid the occurrence of dominant or recessive defects, which is due to thermal shock, difference in expansion ratio of the glass film 1 and the plastic film 2, and glass in addition to mechanical impact.
  • the convex portion 10 is provided on the surface of the glass film 1, so that the glass film 1 has a strength close to that of the thicker glass film 1 when subjected to external impact and thermal shock; on the glass film 1
  • the convex portion 10 is received in the recessed portion 20 on the plastic film 2 to form a mosaic structure, which is advantageous for reducing the displacement caused by the difference in the expansion ratio, releasing the stress of the glass film 1 and preventing excessive stress accumulation, and compensating for the glass film 1 during bending.
  • the difference in elasticity from the plastic film 2 prevents the generation of peeling force.
  • the convex portion 10 of the present invention is arranged horizontally, vertically, or in an array on the upper surface of the glass film 1; the convex portion 10 is a quadrangular pyramid, a quadrangular prism, a spherical crown, a semi-cylindrical, and a third Prismatic, quadrangular, cuboid or cube.
  • FIG. 2 is a schematic view showing the structure of a display substrate film according to an embodiment of the present invention
  • FIG. 3 is a schematic view showing the structure of a glass film 1 according to an embodiment of the present invention; as shown in FIG. 2 and FIG.
  • the convex portion 10 on the glass film 1 is set to have a triangular prism shape, preferably a triangular prism shape whose longitudinal section is an isosceles triangle, and the plurality of convex portions 10 are horizontally arranged on the upper surface of the glass film 1.
  • the thickness of the portion of the glass film 1 excluding the convex portion 10 is t g
  • the thickness of the portion of the plastic film 2 excluding the depressed portion 20 is t p
  • the convex height of the convex portion 10 and the concave depth of the depressed portion 20 are h
  • the center-to-center spacing between adjacent convex portions 10 is W
  • the maximum width of the convex portion 10 is W g , which is adjacent to the plastic film 2 support recesses 20 between the protrusions 23 of the maximum width W p
  • the radius of curvature of the convex portion 10 is R g
  • usually flexible display substrate film is greater than the radius of curvature of the plastic film 2, i.e., the radius of curvature R ⁇ R p
  • the supporting protrusion 23 between the adjacent depressed portions 20 on the plastic film 2 functions to support the glass film 1, ensuring that the glass film 1 does not excessively bend; likewise, the analysis shows that the substrate film is directed to the glass film 1 side.
  • Curved love The glass film 1 is provided with the convex portion 10, and the plastic deformation of the glass film 1 is negligible, so when the display substrate film is bent toward the glass film 1 side, the convex portion 10 on the glass film 1 is applied to the plastic film 2 With the support function, the bendable display substrate film can also not produce excessive bending, ensuring that the glass film 1 does not cause defects.
  • the maximum width of the support protrusion 23 of the plastic film 2 is larger than the maximum width of the convex portion 10 of the glass film 1. Due to the characteristics of the plastic film 2 itself, the support protrusion 23 portion 10 does not affect The bending property of the plastic film 2, and when the size of the boss portion 10 is large, the peeling of the support protrusion 23 on the plastic film 2 and the convex portion 10 of the glass film 1 tends to occur when the display substrate film is bent. expansion coefficient of the plastic film 2 is not effective in inhibiting binding between the glass material and a plastic material is not firmly against the glass film stress release.
  • FIG. 4 is a schematic view showing the structure of a display substrate film according to an embodiment of the present invention
  • FIG. 5 is a schematic view showing the structure of a glass film 1 according to an embodiment of the present invention, as shown in FIG. 4 and FIG.
  • the convex portion 10 has a quadrangular prism shape
  • a quadrangular prism shape having an isosceles trapezoidal longitudinal section is preferred, and a plurality of convex portions 10 are laterally arranged on the upper surface of the glass film 1, assuming an isosceles trapezoidal shape.
  • the bottom width is W g0
  • the minimum width of the support protrusion 23 between the adjacent recessed portions 20 on the plastic film 2 is W p0
  • the bendable display substrate film has a longitudinal (vertical direction) bendability.
  • the plastic material has a large elastic deformation range, so R p is also much smaller than the radius of curvature of the glass film 1 in practical application, and if the convex height value of the convex portion 10 is [1 ⁇ m, 100 ⁇ m], the convexity
  • the maximum width of the portion 10 (the lower base width of the isosceles trapezoid) W g belongs to [1 ⁇ m, 100 ⁇ m], and W p0 is equal to 50 ⁇ m, then R g and R p are respectively less than 290 ⁇ m, which is much smaller than the glass film 1 having a thickness of 100 ⁇ m.
  • the radius of curvature (on the order of millimeters), the arrangement of the bosses 10 does not affect the bending property of the glass film 1 itself, and the support protrusions 23 between the adjacent recesses 20 do not affect the bending property of the plastic film 2 itself;
  • the support protrusion 23 between the adjacent depressed portions 20 on the plastic film 2 is played under the plastic deformation condition of the plastic film 2 after the bending due to the presence of the plastic film 2.
  • the glass film 1 is supported to ensure that the glass film 1 does not excessively bend.
  • the analysis shows that the substrate film is bent toward the glass film 1 side.
  • the glass film 1 is provided with the convex portion 10, and the plasticity of the glass film 1 is provided.
  • the radius of curvature of the display substrate film having the convex portion 10 being a quadrangular prism is larger than the radius of curvature of the display substrate film having the triangular prism shape of the convex portion 10, so that the glass film is formed.
  • the use of the quadrangular prism structure of the convex portion 10 is more advantageous for avoiding excessive bending of the display substrate film;
  • W p> W g it is advantageous to reduce the weight of the display substrate film, preferably W p ⁇ 2W g, using prevent defects;
  • plastic film support boss projecting portion 23 is greater than the maximum width of the glass film 10 1 2
  • the maximum width due to the characteristics of the plastic film 2 itself, the support protrusion 23 portion 10 does not affect the bending property of the plastic film 2, and when the size of the boss portion 10 is large, plastic is likely to appear when the display substrate film is bent.
  • the convex portion 10 on the glass film 1 excessively affects the bending effect, and the weight of the display substrate film is increased; when the plurality of convex portions 10 are longitudinally arranged on the upper surface of the glass film 1
  • the description process of the plurality of convex portions 10 arranged in the lateral direction is the same except that the bending direction of the substrate film is displayed.
  • FIG. 6 is a schematic view showing the structure of a glass film 1 according to an embodiment of the present invention.
  • the boss portion 10 has a quadrangular pyramid shape, and preferably a plurality of boss portions 10 is arranged in an array on the upper surface of the glass film 1, showing that the substrate film can be bent laterally or vertically Bending, but the bending effect in other directions is slightly worse, and the distribution density of the convex portions 10 is a spatially uniform array distribution, that is, the bottom edges of the respective convex portions 10 in the same direction are parallel, and the center of the bottom surface of each convex portion 10 is When the distances are equal, the apex distances of the convex portions 10 are equal, thereby ensuring the uniformity of bending of the display substrate film.
  • the convex portion 10 has a bending characteristic of the quadrangular pyramidal display substrate film in the lateral direction and the longitudinal direction, and the bending property of the display substrate film having the triangular portion of the convex portion 10, respectively, and the influence factors in other bending directions are complicated.
  • the bending effect is not good, and it is not recommended that the display substrate film of this embodiment be bent in other directions.
  • Fig. 7 is a schematic view showing the structure of a glass film 1 according to an embodiment of the present invention.
  • the boss portion 10 has a quadrangular prism shape, and preferably a plurality of boss portions. 10 is arranged in an array on the upper surface of the glass film 1, and the bendability is slightly poor, but it is more advantageous to avoid excessive bending of the glass film 1.
  • the distribution density of the protrusions 10 is a spatially uniform array distribution, that is, the respective convex portions.
  • the sides of the upper and lower bottom surfaces of 10 are parallel, and the center distances of the adjacent upper and lower bottom surfaces of each convex portion 10 are equal and evenly distributed, thereby ensuring the uniformity of bending of the display substrate film.
  • the convex portion 10 has a bending characteristic of the quadrangular prism-shaped display substrate film in the lateral direction and the longitudinal direction, and the bending property of the display substrate film having the quadrangular prism shape of the convex portion 10, respectively, and the influence factors in other bending directions are complicated.
  • the bending effect is not good, and it is not recommended that the display substrate film of this embodiment be bent in other directions.
  • the bending effect is similar to the case where the convex portion 10 has a triangular prism shape and a quadrangular prism shape, and can be used in the actual processing of the display substrate film.
  • the radius and distribution density of the boss 10 are adjusted to obtain satisfactory bending performance.
  • the convex portion 10 in the preferred embodiment has the same bending property analysis process in which the upper surface of the glass film 1 is laterally aligned or longitudinally aligned, except that the bending direction of the substrate film is different.
  • FIG. 8 is a schematic view showing a configuration of a display substrate film according to an embodiment of the present invention
  • FIG. 9 is a view showing a configuration of a glass film 1 according to an embodiment of the present invention, as shown in FIGS. 8 and 9
  • the convex portion 10 on the glass film 1 has a spherical crown shape
  • the convex portion 10 has an equal bending ability in any direction, and it is difficult to quantitatively analyze the radius of curvature of the convex portion 10.
  • the bending property of the display substrate film in the longitudinal or lateral direction is similar to that of the display substrate film in which the convex portion 10 is semi-cylindrical, and the radius and distribution density of the convex portion 10 can be adjusted during the actual processing of the display substrate film to obtain satisfactory Bending performance.
  • the number of the convex portions 10 distributed in the edge portion of the upper surface of the glass film 1 is larger than the number of the convex portions 10 distributed in the non-edge regions of the upper surface of the glass film 1; the weakest region of the glass film 1
  • the area where the defect is most likely to occur is an area in which the edge portion of the glass film 1 extends inward by several millimeters, and the purpose of providing the boss 10 in this area is to prevent edge defects and to effectively reduce Low generation of various defects.
  • the shape of the convex portion 10 may be designed to have a triangular shape, a trapezoidal shape, an arc shape, a semicircular shape or a semi-elliptical shape according to actual conditions; when the sum of the thickness of the glass film 1 and the height of the convex portion 10 is greater than 0.1 mm,
  • the plurality of convex portions 10 disposed on the edge region of the glass film 1 are aligned with the plurality of convex portions 10 disposed in the non-edge regions (internal regions) of the glass film 1 in the bending direction and the arrangement density, without affecting the bendability;
  • the plurality of convex portions 10 are longitudinally arranged or laterally arranged, it is ensured that the edge portion of the glass film 1 has the convex portion 10, and the bending property is preferentially ensured, and the impact resistance is inferior.
  • the plurality of convex portions 10 are arranged in an array, it is ensured that the number of the convex portions 10 distributed in the edge regions is larger than the number of the convex portions 10 distributed in the non-edge regions, and the bending property is preferentially ensured, and the impact resistance is inferior. .
  • the sum of the thickness of the glass film 1 and the protrusion height of the boss 10 is more than 0.1 mm, the bendability is high, and it is conceivable to design the edge of the glass film 1 to be completely closed or mostly closed, without considering the internal
  • the convex portion 10 is structured such that the display substrate film has a stronger ability to withstand edge impact, but the bending property is weak.
  • the protrusion height of the convex portion 10 and the depression depth of the concave portion 20 are both 100 ⁇ m or less; the higher the protrusion height of the convex portion 10 on the glass film 1 is, the more favorable it is to maintain
  • the mechanical stability of the glass film 1 itself is disadvantageous in that the bending property is deteriorated and the weight is heavy.
  • the supporting protrusion 23 between the adjacent depressed portions 20 on the plastic film 2 serves to support the glass film 1, and the thicker the support protrusion 23 is. The stronger the support.
  • the thickness of the portion of the glass film 1 excluding the convex portion 10 is 100 ⁇ m or less. It has been experimentally verified that various alkali glass or alkali-free glass have good bendability when the thickness is less than 100 ⁇ m.
  • the plastic film 2 includes a cover portion 21 disposed opposite to the glass film 1 and two edge portions 22 respectively disposed on both sides of the cover portion 21, the cover portion 21 not including a recess portion
  • the thickness of the portion of 20 is less than or equal to 400 ⁇ m.
  • the edge portion The width of 22 is greater than 100 ⁇ m, the thickness is less than or equal to 600 ⁇ m, and the thickness of the edge portion 22 is equal to the sum of the thickness of the cover portion 21 of the plastic film 2 and the thickness of the portion of the glass film 1 not including the projection 10, by wrapping the outer edge of the glass film 1.
  • the setting of the edge area can effectively reduce the probability of occurrence of defects.
  • the thickness of the display substrate film is uniform, that is, the thickness of the portion of the glass film 1 not including the convex portion 10, the convex height of the convex portion 10, and the covering portion 21 not including the concave portion
  • the sum of the thicknesses of the portions of the portion 20 is equal to the thickness of the display substrate film, and the edge portion of the plastic film 2
  • the thickness of the minute 22 is also equal to the thickness of the display substrate film and is 600 ⁇ m or less; the thinner the thickness of the display substrate film, the better the bendability.
  • the thickness of the glass film 1 is lowered, the bendability is improved, the weight of the entire display substrate film is reduced, and the drop resistance is improved.
  • the thickness of the glass film 1 is only a few micrometers, the bending property of the display substrate film is close to that of the plastic film 2, and the gas barrier property can still be comparable to that of a general glass substrate.
  • the thickness of the plastic film 2 affects the transmittance of the display substrate film. When the display substrate film is used as a non-backplane, the thickness of the plastic film 2 is reduced as much as possible, and the transmittance of the entire substrate is improved.
  • the surface waviness of the glass film 1 is less than or equal to 0.5 ⁇ m / 20 mm; the surface roughness of the plastic film 2 is less than or equal to 2 nm; when the lower surface of the glass film 1 is used as a display reference surface, The grinding method can effectively reduce the waviness to meet the requirements of the display substrate film; the plastic film 2 is easy to be bent due to the bending, the waviness is easy to be corrected during the processing, and the surface roughness is an indicator that needs more attention than the waviness. .
  • the display substrate film further includes an electrode disposed on a lower surface of the glass film 1 and/or an upper surface of the plastic film 2; the electrode type is divided into a transparent electrode and a non-transparent electrode.
  • the transparent electrode may be made of ITO material, PEDOT material, carbon nanotube material or graphene material;
  • the non-transparent electrode may be a metal electrode, specifically, a metal electrode such as aluminum, silver or copper; and the electrode is attached to the glass film. 1
  • the surface has the advantage of being able to withstand high temperature processing, showing that the substrate film has good thermal stability; when the temperature changes, the size of the plastic film 2 changes, it does not affect the electrode geometry, and has high heat stability.
  • the electrode is attached to the surface of the plastic film 2
  • a lower process temperature is required, but the electrode has very good bendability, especially an organic electrode material, such as a PEDOT material.
  • an organic electrode material such as a PEDOT material.
  • the display substrate film further includes a thin film transistor disposed on the lower surface of the glass film 1 and/or the upper surface of the plastic film 2; the thin film transistor type may be an organic thin film transistor or an inorganic thin film transistor as needed. If the thin film transistor is an inorganic thin film transistor, it is advantageous to be disposed on the side of the glass film 1.
  • the glass film 1 can withstand higher temperature processing without deformation, specifically, such as a-Si (amorphous silicon) thin film transistor, p -Si (polysilicon) thin film transistor, LTPS (low temperature polysilicon) thin film transistor, IGZO (indium gallium zinc oxide) thin film transistor, etc., can be placed on the glass side to adapt to the existing process manufacturing environment, if an organic TFT is used, that is, an OTFT (organic film)
  • the transistor When the transistor is provided, it can be disposed on the side of the glass film 1 or the plastic film 2 to satisfy the process manufacturing environment, but it is disposed on the side of the glass film 1, and the active device is manufactured with good dimensional stability and high uniformity, which is advantageous for the transistor.
  • the plastic film 2 needs to select a high-temperature resistant material such as a PI film or a PEN film, and at the same time in the manufacturing process. Some adjustments are needed to meet the thermal stability requirements of the materials.
  • the present invention further provides a display device comprising the flexible display substrate film according to any of the above embodiments; preferably, the display device may be a liquid crystal display device, an organic light emitting diode display device or an electronic paper display
  • the display device is a liquid crystal display device
  • a liquid crystal display device of different display modes such as TN (twisted nematic), STN (super twisted nematic), IPS, PDLC, Ch-LCD, VA, and FLC can be fabricated.
  • the liquid crystal display device of the TN display mode can be classified into two types: passive and active.
  • the plastic film 2 side can be used as the inner surface of the liquid crystal cell, or the glass film 1 side can be used as the The inner surface, or the side of the plastic film 2 and the side of the glass film 1 are respectively used as the inner surface, and the combination of the inner surface of the liquid crystal cell is low due to the low temperature of the manufacturing process environment, and the thickness uniformity of the liquid crystal cell is not high.
  • the glass film 1 is used as the inner surface of the liquid crystal cell, the manufacturing process environment in the process of manufacturing the liquid crystal cell can be satisfied, the expansion ratio is low, and the precision of the active device can be precisely controlled.
  • the plastic film 2 can be considered as the inner surface of the liquid crystal cell, and the flexible display substrate film of the liquid crystal display device is used in two. It is required that the bending directions of the two display substrate films are uniform. Specifically, assuming that one of the plurality of convex portions 10 of the display substrate film is longitudinally aligned on the glass film 1, the plurality of convex portions 10 of the other display substrate film are in the glass.
  • the film 1 is arranged longitudinally or in an array, and assuming that a plurality of convex portions 10 of the substrate film are laterally arranged on the glass film 1, the other plurality of convex portions 10 of the display substrate film are on the glass film 1. Horizontally arranged or arranged in an array.
  • liquid crystal display devices There are many kinds of liquid crystal display devices, and the material combination is selective. In the actual application process, according to the characteristics of the film and the manufacturing process environment, the optimal combination is not listed here. No matter which combination is used, the flexible display substrate film can be achieved. The purpose of bending can effectively avoid the occurrence of excessive bending defects, and the gas barrier property is not inferior to the pure glass substrate thin film liquid crystal cell.
  • the display device may be an organic light emitting diode display device, and when the display device is an organic light emitting diode display device, a display device capable of forming a top or bottom light; an organic light emitting diode (OLED) may be divided according to a driving principle.
  • OLED organic light emitting diode
  • active-driven OLEDs have more stringent requirements on charge mobility and uniformity than active-powered liquid crystal display devices because OLEDs are current-type devices.
  • materials constituting OLEDs such as The organic light-emitting layer, the hole injection layer, the hole transport layer, the electron transport layer, and the electron injection layer are all organic materials, and are more sensitive to oxygen molecules and water molecules, so that the gas barrier property of the display substrate film is very high, and reference is made.
  • the above related description of the liquid crystal display device, the bendable display substrate film is a very suitable form, because the OLED uses a single layer of a flexible display substrate film, and the electrodes and display materials are laminated, so the curved form seems to be easy to implement.
  • the flexible display substrate film can be used not only as a display substrate film, but also as a protection
  • the substrate film of the back electrode is used at a low cost; the structure of the flexible display substrate film has a resistance
  • the performance of the gas film can achieve the bending of the entire OLED display device when the arrangement direction of the protrusions 10 and the bending direction required for the display substrate film are uniform.
  • the glass film 1 is The plurality of raised portions 10 may be arranged longitudinally or in an array.
  • the display substrate film When the display substrate film is required to be laterally curved, the plurality of raised portions 10 on the glass film 1 may be arranged side by side or in an array; since no coating is required The process can achieve high gas barrier properties and reduce the cost of the OLED display device.
  • the display device may be an electronic paper display device; using the above flexible display substrate film to fabricate a driving back plate, the cost of the flexible electronic paper display can be effectively reduced; the electronic paper display is mainly satisfied with the replacement of the paper, and the low cost is basic requirements.
  • the flexible display substrate film can meet the requirements by using the inexpensive plastic film 2 and the glass film 1, and create conditions for the popular use of electronic paper.
  • the present invention also provides a method for manufacturing a flexible display substrate film for manufacturing the above-described flexible display substrate film, and comprising the steps of: forming a plurality of convex portions 10 on the upper surface by calendering or etching.
  • the glass film 1 and the plastic film 2 are integrated by a pressing method; the heating temperature at the time of lamination is higher than the softening point temperature of the plastic film 2 and lower than the softening point temperature of the glass film 1; and the plastic film integrated with the glass film 1 2 Laser cutting is performed to obtain the edge portion 22 of a desired size.
  • both the glass film 1 and the plastic film 2 use a plate-like material, which is advantageous for forming the high-precision protrusions 10, and is also advantageous for increasing the tightness of the combination of the two materials, and at the same time, the glass film 1 and the plastic film 2 even There are a few defects, which are also automatically repaired during the heating process of the manufacturing method; the laminating process usually does not require the use of an adhesive, and can be compounded by simple heating, when the superposed plastic film 2 and the glass film 1 are directly When bonding is difficult, it is conceivable to use a transparent adhesive for bonding.
  • the invention has simple manufacturing process, excellent gas barrier property and low cost. Since the thickness of the glass film 1 is easily adjusted, it is easy to reduce the weight of the film of the flexible display substrate, and the shock absorption of the film is utilized to make the film of the curved display substrate have high drop resistance and mechanical shock resistance.
  • the thickness of the glass film 1 is significantly increased, thereby improving the thermal shock resistance of the display substrate film; the convex portion 10 is disposed on the edge of the glass film 1, supplemented by the wrapping of the plastic film 2, The occurrence of edge defects is effectively avoided; the design of the convex portion 10 of the glass film 1 and the recess portion 20 of the plastic film 2 can effectively avoid over-bending defects and improve the thermal shock resistance and mechanical impact capability of the flexible display substrate film;
  • the glass film 1 can function as a water blocking and oxygen barrier.
  • the oxygen and moisture infiltrated from the edge of the plastic are reduced or largely blocked by the design of the edge protrusions 11, and the gas barrier property of the entire display substrate film is realized, and an expensive vacuum-plated inorganic film is not required.
  • the structure can avoid the defects of the glass film 1 and improve the tolerance to the manufacturing process environment, and can realize a low-cost bendable display.
  • the produced OLED display device has display performance of the same lifetime as that of the single glass film 1, and is therefore particularly suitable for use in long-life display device manufacturing.
  • the convex portion 10 of the glass film 1 and the depressed portion 20 of the plastic film 2 can suppress thermal expansion of the plastic film 2 having a high linear expansion coefficient, thereby obtaining a display substrate film material having a small linear expansion coefficient, and is suitable for a high resolution display device. Applications.
  • the rupture of the glass film 1 is caused by a small defect in which the stress concentrates on the surface, and the thickness of the glass film 1 becomes thinner, and the rupture is more likely to occur, so that it is difficult to achieve thinning, and the display substrate film of the present invention is
  • the convex portion 10 having a proper shape and density disposed on the surface of the glass film 1 remarkably enhances the strength and toughness of the glass film 1 itself, and the plastic film 2 reduces the impact of the external force impact, so that the tearing stress in the direction of the defect during deformation is alleviated. Excellent substrate properties can be obtained, so that secondary workability and operability can be significantly improved.
  • the invention can avoid the occurrence of defect of the substrate film due to excessive bending, and has the characteristics of strong rigidity, low expansion ratio and good planar ductility, and at the same time has excellent oxygen barrier and water vapor barrier properties, and is non-transparent or transparent.
  • the form can be realized, the processing is simple and the cost is low, and the substrate film has the characteristics of high temperature tolerance by selecting the high temperature resistant plastic film 2 material. Low cost, high reliability, can avoid the dominant or hidden defects caused by external impact, and is durable.
  • All the edges (sides) of the glass film 1 of the present invention are surrounded by the plastic film 2; the plastic film 2 and the glass film 1 are integrally bonded by heat bonding or using a transparent adhesive, and the surfaces of the glass film 1 and the plastic film 2 are integrated. Both are smooth planes; glass film 1 is preferably made of alkali glass and alkali-free glass material, and plastic film 2 is preferably made of materials such as PET, PEN, TAC and PI.
  • the glass film 1 (including the convex portion 10) is made of alkali-free glass, and the plastic film 2 is made of PEN material;
  • the boss portion 10 is formed in a triangular prism shape and arranged laterally on the surface of the glass film 1, preferably a triangular prism having a longitudinal section of an isosceles triangle, and a center between adjacent convex portions 10.
  • the pitch W is 80 ⁇ m
  • the maximum width of the support protrusion 23 between the adjacent depressed portions 20 is 80 ⁇ m
  • the maximum width W g of the convex portion 10 is 80 ⁇ m
  • the convex height h of the convex portion 10 is 100 ⁇ m;
  • the supporting protrusion 23 between the adjacent depressed portions 20 on the plastic film 2 cooperates with the convex portion 10 on the glass film 1 to form a mixed layer having a thickness of about 100 ⁇ m, and the bending property mainly depends on the glass film 1 The bending ability of the boss 10.
  • the presence of the support protrusions 23 between the adjacent depressed portions 20 on the plastic film 2 serves as a buffering effect, and the plastic film is neglected under the condition of plastic deformation of the plastic film 2.
  • the support protrusions 23 of 2 function to support the glass film 1, ensuring that the glass film 1 does not cause excessive bending defects.
  • the convex portion 10 on the glass film 1 supports the plastic film 2, and the plastic film 2 does not excessively bend, thereby ensuring that the glass film 1 does not cause defects.
  • the thickness t g of the portion other than the convex portion 10 of the glass film 1 is 100 ⁇ m
  • the thickness t p of the portion of the plastic film 2 other than the depressed portion 20 is 200 ⁇ m
  • the thickness of the entire display substrate film is 400 ⁇ m
  • the curvature is bendable.
  • the radius depends on the radius of curvature of the glass film 1.
  • the boss portion 10 is formed in a quadrangular prism shape and arranged laterally on the surface of the glass film 1, preferably in a quadrangular prism shape having an isosceles trapezoidal longitudinal section, and an upper base width W g0 of the isosceles trapezoid.
  • the radius of curvature of the glass film 1 is larger than the radius of curvature of the triangular portion 10 of the convex portion 10, but is much smaller than the radius of curvature of the glass film 1 having a thickness of 100 ⁇ m, so that the convex portion 10 does not affect the bending property of the glass film 1;
  • the supporting protrusions 23 between the adjacent depressed portions 20 cooperate with the convex portions 10 on the glass film 1 to form a mixed layer having a thickness of about 100 ⁇ m, and the bending property mainly depends on the bending ability of the convex portion 10 on the glass film 1. .
  • the presence of the support protrusions 23 between the adjacent depressed portions 20 on the plastic film 2 serves as a buffering function, and the support protrusions 23 of the plastic film 2 serve to support the glass film 1 under the condition of ignoring the plastic deformation of the plastic film 2.
  • the effect is to ensure that the glass film 1 does not cause excessive bending defects.
  • the convex portion 10 on the glass film 1 is applied to the plastic film 2 With the support effect, the plastic film 2 also does not excessively bend, ensuring that the glass film 1 does not cause defects.
  • the convex portion 10 has a radius of curvature of a quadrangular prism shape larger than that of the convex portion 10 as a triangular prism shape, so when the bending property of the glass film 1 is low, a quadrangular prism is used.
  • the raised portion 10 is more advantageous in avoiding excessive bending of the bendable display substrate film.
  • the thickness t g of the portion other than the convex portion 10 of the glass film 1 is 100 ⁇ m
  • the thickness t p of the portion of the plastic film 2 other than the depressed portion 20 is 200 ⁇ m
  • the thickness of the entire display substrate film is 400 ⁇ m
  • the curvature is bendable.
  • the radius depends on the radius of curvature of the glass film 1.
  • the protrusions 10 are arranged in a quadrangular pyramid shape and arranged in an array on the surface of the glass film 1.
  • the pyramidal geometry of the protrusions 10 is 80 ⁇ m on the low side and 100 ⁇ m on the height.
  • the longitudinal center-to-center or lateral center-to-center distance between the bosses 10 is 120 ⁇ m
  • the thickness of the portion of the glass film 1 excluding the boss portion 10 is 100 ⁇ m
  • the thickness of the portion of the plastic film 2 excluding the recessed portion 20 is 200 ⁇ m
  • the geometry of the recess 20 is also a low side length of 80 ⁇ m and a height of 100 ⁇ m.
  • Entire display The thickness of the substrate film is 400 ⁇ m, and the radius of curvature depends on the glass film 1, and the optimum bending direction is along the bottom side of the quadrangular pyramid.
  • the protrusions 10 are arranged in a quadrangular shape and arranged in an array on the surface of the glass film 1.
  • the quadrangular geometry of the protrusions 10 is 40 ⁇ m on the upper side and the side on the bottom side is 80 ⁇ m, height is 100 ⁇ m, the center distance between the upper and lower surfaces of each convex portion 10 is 120 ⁇ m, or the center distance between the lower bottom surfaces of the convex portions 10 is 120 ⁇ m, and the thickness of the glass film 1 excluding the convex portion 10
  • the thickness of the plastic film 2 other than the depressed portion 20 is 200 ⁇ m, and the geometrical size of the depressed portion 20 of the plastic film 2 is also 40 ⁇ m in the upper bottom side, 80 ⁇ m in the lower bottom side, and 100 ⁇ m in height.
  • the thickness of the entire flexible display substrate film is 400 ⁇ m, and the bendable radius of curvature depends on the glass film 1, and the optimum bending direction is along the bottom edge direction of the quadrangular prism.
  • the protrusions 10 are spherically shaped and arranged in an array on the surface of the glass film 1.
  • the spherical crown of the protrusion 10 has a radius of 120 ⁇ m and a height of 100 ⁇ m.
  • the center distance between the bottom surfaces of the convex portions 10 is 160 ⁇ m, the thickness of the glass film 1 except the convex portion 10 is 100 ⁇ m, the thickness of the plastic film 2 except the concave portion 20 is 200 ⁇ m, and the concave portion of the plastic film 2 is spherical.
  • the geometrical dimensions are a radius of the bottom surface of 100 ⁇ m and a height of 100 ⁇ m, and the center distance of the bottom surface of each convex portion 10 is 160 ⁇ m.
  • the thickness of the entire flexible display substrate film is 400 ⁇ m, and the bendable radius of curvature depends on the glass film 1, and there is no fixed optimum bending direction, which is substantially the same in each bending direction.
  • Edge projections 11 are also provided on the upper surface of the glass film 1, and the edge projections 11 are located within a predetermined distance from the edge of the glass film 1. These edge projections 11 can effectively reduce the occurrence of various defects.
  • the convex cross-sectional shape is designed to be triangular, trapezoidal, curved, semi-circular or semi-elliptical.
  • the cross-sectional shape is set to a semicircle with a radius of 100 ⁇ m and a height of 100 ⁇ m.
  • the edge protrusion 11 can also be designed with reference to the convex shape, distribution direction and density on the glass film 1.
  • the disadvantage is that it does not necessarily have an optimum protection effect, and the advantage is that the substrate film of any area is matched, and the bending property is consistent with the substrate film.
  • the edge protrusion 11 is provided in a closed shape to more effectively prevent the occurrence of defects without affecting the bending property.
  • alkali glass such as soda glass and neutral borosilicate glass
  • alkali-free glass mainly alkali-free aluminosilicate glass
  • the glass has good chemical stability and electrical insulation; preferably, the width of the edge portion 22 of the plastic film 2 is selected to be 500 ⁇ m; when the surface of the glass film 1 is used as a display reference surface, the surface of the glass film 1 is ground by grinding.
  • the waviness is equal to 0.3 ⁇ m / 20 mm.
  • a glass substrate having a thickness of 0.3 mm is melted, and a glass film 1 having a plurality of convex portions 10 having a triangular prism shape is formed by a calendering method, wherein the glass film 1 has a thickness of 100 ⁇ m excluding the convex portion 10, and the convex portion
  • the protrusion height of 10 is 100 ⁇ m, and the maximum width of the protrusion 10 is 100 ⁇ m; laser cutting of the formed glass film 1 is performed to obtain a glass film 1 of a desired size, and the edge of the glass film 1 is longitudinally triangular prism-shaped.
  • the shape, the lateral convex distribution density and the direction are consistent with the inside of the glass film 1; the glass film 1 and the plastic film 2 are cleaned and dried; the plastic film 2 having a thickness of 400 ⁇ m is covered on the glass film 1 to ensure that the outer edge of the plastic film 2 is larger than The glass film is 11 mm, and the glass film 1 and the plastic film 2 are integrated by a lamination method; the width of the edge portion 22 of the plastic film 2 is corrected to 500 ⁇ m by laser cutting, and the thickness of the edge portion 22 of the plastic film 2 is 350 ⁇ m; The surface of the film 1 was such that the surface waviness of the glass film 1 was equal to 0.3 ⁇ m / 20 mm, and the thickness of the entire flexible display substrate film was 350 ⁇ m.
  • a plurality of convex portions 10 having a quadrangular prism shape are formed on a glass substrate having a thickness of 100 ⁇ m by an etching method, and a thickness of a portion of the glass film 1 excluding the convex portion 10 is 50 ⁇ m, and a convex height of the convex portion 10 is 50 ⁇ m, the maximum width of the convex portion 10 is 50 ⁇ m, the closed protrusion of the edge of the glass film 1 is a triangular prism shape, the height is 50 ⁇ m, and the width is 50 ⁇ m; the formed glass film 1 is laser-cut to obtain a desired size.
  • the glass film 1 ensures that the periphery of the glass is surrounded by a triangular prism shape; the glass film 1 and the plastic film 2 are cleaned and dried; the plastic film 2 having a thickness of 200 ⁇ m is covered on the glass film 1 to ensure that the outer edge of the plastic film 2 is larger than the glass. 11 mm, the glass film 1 and the plastic film 2 are integrated by lamination; the width of the edge portion 22 of the plastic film 2 is 500 ⁇ m by laser cutting, and the thickness of the edge portion 22 of the plastic film 2 is 200 ⁇ m;
  • the surface of the glass film 1 has a surface waviness of 0.5 ⁇ m/20 mm, the thickness of the entire flexible display substrate film is 200 ⁇ m, and the thickness of the plastic film 2 is 100 ⁇ m.
  • the plastic film 2 is made of a PEN material, and the lamination method has a film deposition temperature of 300 ° C, and the plastic film 2 can be formed to uniformly cover the surface of the glass film 1.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Liquid Crystal (AREA)
  • Electroluminescent Light Sources (AREA)
  • Laminated Bodies (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Thin Film Transistor (AREA)

Abstract

L'invention concerne un film de substrat d'affichage flexible, son procédé de préparation, et un dispositif d'affichage. Le film de substrat d'affichage flexible comprend : un film de verre (1), la surface supérieure du film de verre (1) présentant de multiples parties saillantes (10) ; et un film de plastique (2) recouvrant le film de verre (1), la surface inférieure du film de plastique (2) présentant de multiples parties renfoncées (20) utilisées pour loger les parties saillantes (10). Les multiples parties saillantes (10) sont agencées horizontalement, longitudinalement, ou en un réseau sur la surface supérieure du film de verre (1). Le film de substrat d'affichage flexible a un processus de préparation simple et présente d'excellentes propriétés de barrière aux gaz et à la vapeur. Pour éviter des cassures ou des fissures du film de verre provoquées par un choc mécanique ou un choc thermique, la résistance aux chutes et la résistance aux chocs du film de substrat d'affichage flexible sont considérablement améliorées par réduction du poids du film de substrat d'affichage flexible et utilisation des fonctions d'amortissement et d'absorption des chocs du film de plastique.
PCT/CN2016/108986 2016-03-23 2016-12-08 Film de substrat d'affichage flexible, son procédé de préparation, et dispositif d'affichage WO2017161919A1 (fr)

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CN201610172080.8A CN105679774B (zh) 2016-03-23 2016-03-23 可弯曲显示基板薄膜及其制造方法、显示装置
CN201620231266.1 2016-03-23
CN201610172080.8 2016-03-23
CN201620231266.1U CN205564746U (zh) 2016-03-23 2016-03-23 可弯曲显示基板薄膜及显示装置

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