US20140154661A1 - Durable glass articles for use as writable erasable marker boards - Google Patents

Durable glass articles for use as writable erasable marker boards Download PDF

Info

Publication number
US20140154661A1
US20140154661A1 US14/093,649 US201314093649A US2014154661A1 US 20140154661 A1 US20140154661 A1 US 20140154661A1 US 201314093649 A US201314093649 A US 201314093649A US 2014154661 A1 US2014154661 A1 US 2014154661A1
Authority
US
United States
Prior art keywords
mol
writeable
less
glass
glass sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/093,649
Other languages
English (en)
Inventor
Dana Craig Bookbinder
Jeffrey John Domey
Matthew Wade Fenton
David Lee Weidman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Corning Inc
Original Assignee
Corning Inc
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
Application filed by Corning Inc filed Critical Corning Inc
Priority to US14/093,649 priority Critical patent/US20140154661A1/en
Assigned to CORNING INCORPORATED reassignment CORNING INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEIDMAN, DAVID LEE, BOOKBINDER, DANA CRAIG, FENTON, Matthew Wade, DOMEY, JEFFREY JOHN
Priority to EP14815935.3A priority patent/EP3077217A1/en
Priority to PCT/US2014/038802 priority patent/WO2015084431A1/en
Priority to US14/282,570 priority patent/US9604492B2/en
Priority to JP2016535083A priority patent/JP6467423B2/ja
Priority to CN201480074751.6A priority patent/CN105960336B/zh
Priority to KR1020167017805A priority patent/KR20160094429A/ko
Priority to TW103117792A priority patent/TWI623507B/zh
Publication of US20140154661A1 publication Critical patent/US20140154661A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • 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
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/002—Repeatedly-usable boards or tablets for writing or drawing chemical details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/008—Repeatedly-usable boards or tablets for writing or drawing with magnetic action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/12—Repeatedly-usable boards or tablets for writing or drawing having translucent writing surfaces producing visual impressions by co-operation with backing members
    • B43L1/123—Flexible writing surface or backing
    • B43L1/126—Flexible writing surface or backing withinterposed adhesive substances
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
    • C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
    • C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/089—Glass compositions containing silica with 40% to 90% silica, by weight containing boron
    • C03C3/091—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium
    • C03C3/093—Glass compositions containing silica with 40% to 90% silica, by weight containing boron containing aluminium containing zinc or zirconium

Definitions

  • the invention is directed to glass materials that can be used as durable glass articles for use as writeable erasable marker boards or devices.
  • the invention is directed to an ion-exchanged glass article having requisite mechanical and optical characteristic properties which make it particularly suitable for use as for use as writeable erasable marker boards/devices.
  • U.S. Publ. No. 2011/091860 discloses a magnetic glass dry erase board that includes a glass sheet, a metal sheet, and an adhesive layer attaching the metal sheet to the glass sheet.
  • the glass sheet is fabricated from low iron glass and may be fabricated from tempered glass.
  • the metal sheet may be at least partially covered with a coating, and the coating may be visible through the glass sheet to provide a background color that enhances the visibility of text or drawings placed on the magnetic glass dry erase board.
  • the metal sheet enables objects to be removably mounted on the magnetic dry erase board using magnets.
  • U.S. Publ. No. 2006/073466 discloses a glass dry-erase board that includes a tempered glass sheet having a smooth surface and a frosted surface. A layer of opaque white paint is painted on the frosted surface. The paint layer and frosted surface provide a non-image-reflecting or non-specular background and relative sharp contrast background for writing.
  • the glass dry-erase board can be mounted on the wall using spaced hook or picture hangers.
  • CN 2542455 Y (2 Apr. 2003) discloses a word board that includes a transparent glass board.
  • the back of the glass board body is coated with a white paint or pasted with a white paper layer.
  • the board body can also be formed by uniting two layers of thinner transparent glass boards and a white paper layer that is clipped in the middle to one of the glass board layers.
  • a high strength writeable erasable marker board having improved optical and mechanical and magnetic force properties.
  • the writeable erasable marker boards are comprised of strengthened glass articles which exhibit minimal shadow parallax and haze.
  • a strengthened glass article suitable for use as a writeable erasable marker boards wherein the glass sheet exhibits an ion exchanged glass having a front surface and a back surface and exhibiting a thickness of less than 2.0 mm and having a depth of layer (DOL) greater than 20 microns and a surface compressive strength of at least 300 MPa.
  • DOL depth of layer
  • the strengthened glass article exhibits certain optical properties which render it particularly suitable for use as a writeable erasable marker boards.
  • those optical properties which make this glass suitable for use a writeable erasable marker boards include: (1) shadow parallax to thickness ratio of less than or equal to 1.73/n measured at 60° incident light angle and for an index of refraction of n; (2) a haze of less than 50%.
  • Mechanical properties exhibited by the disclosed strengthened glass article which render it particularly suitable for use as a writeable erasable marker boards include the following: (1) a fracture toughness of greater than 0.5 MPa ⁇ m 1/2 ; (2) an MOR of greater than 350 MPa; (3) a Vickers hardness of at least 600 kgf/mm 2 ; (4) a Young's Modulus of greater than 70 MPa; (5) a refractive index of greater than 1.5031 @ 633 nm.
  • the glass article can be combined with a magnetic or ferrous steel backing and the combination of the thin glass article and the backing resulting in a writeable erasable marker board wherein when the marker board is vertical, a permanent magnet with maximum energy product of less than 10 MGOe will remain attached to the glass sheet through magnetic force only.
  • FIG. 1A shows a strengthened glass sheet/writeable erasable marker board according to an embodiment disclosed herein.
  • FIG. 1B shows a cross-section of a strengthened glass sheet along line lb-lb of FIG. 1A .
  • FIG. 2 schematically illustrates the shadow optical parallax optical characteristic which is exhibited by the embodiments disclosed.
  • FIG. 3 illustrates the shadow parallax to thickness relationship/ratio for 4 examples and 4 comparative examples
  • FIGS. 4A-4B illustrate three embodiments of a writeable erasable marker board each of which comprises a strengthened glass sheet laminated and/or attached to a second film structure or layer.
  • FIGS. 5A-5D illustrate four embodiments of a writeable erasable marker board which additionally include a strengthened glass sheet in combination with a magnetic or ferrous steel backing according to an embodiment disclosed herein.
  • FIG. 1A shows a writeable erasable marker board or device comprised of a strengthened glass sheet 200 having a front surface 202 , a back surface 204 , and a uniform thickness of glass 206 between the front surface 202 and the back surface 204 .
  • the glass thickness 206 is less than 2.0 mm.
  • the glass thickness 206 is less than 1.0 mm.
  • the glass thickness 206 is less than 0.7 mm.
  • the glass will typically have a thickness from about 0.2 mm to about 2.0 mm. In some embodiments, the glass thickness may be 2.0 mm or greater.
  • the strengthened glass sheet 200 is a transparent glass sheet.
  • the strengthened glass sheet 200 is a color tinted transparent glass sheet or a colored opaque glass sheet.
  • a decoration or printed image may be formed on the back surface 204 of the glass sheet 200 .
  • the decoration may be dense enough to cover the back surface 204 , and of an opaque color, such that the back surface 204 appears opaque.
  • the front surface 202 is the writeable erasable surface and is the surface that would be in the fore when the strengthened writeable erasable device 100 is mounted.
  • the front surface 202 may or may not have special surface attributes compared to the back surface 204 .
  • the front surface 202 may be treated with agents that would facilitate surface writing and erasability.
  • the back surface 204 is parallel and in opposing relation to the front surface 202 .
  • the strengthened glass sheet 200 has at least one near-surface compressively-stressed region.
  • FIG. 1B shows that the strengthened glass sheet 200 may have a compressively-stressed region 208 near its front surface 202 and/or a compressively stressed region 210 near its back surface 204 .
  • the compressively-stressed region 208 (or 210 ) is formed by subjecting a “virgin glass” to a chemical strengthening process, preferably an ion-exchange process.
  • a “virgin glass” is a glass that has not been subjected to a chemical strengthening process.
  • thermal strengthening such as tempering, may be used to form the compressively-stressed region 208 (or 210 ).
  • the virgin glass is an ion-exchangeable glass containing small alkali metal or alkaline-earth metal ions that can be exchanged for larger alkali or alkaline-earth metal ions.
  • the ion exchange takes place in a molten bath containing the larger alkali or alkaline-earth metal ions.
  • the virgin glass is dipped or immersed in the molten bath, and the smaller alkali or alkaline-earth metal ions in the virgin glass are displaced by the larger alkali or alkaline-earth metal ions in the molten bath.
  • the larger ions occupying sites in the glass previously occupied by the smaller ions create the compressively-stressed region in the glass.
  • the ion exchange occurs through the surface(s) of the glass.
  • the depth of the ion-exchange into the glass determines the depth into the glass (or thickness, or layer depth) of the compressively-stressed region.
  • a compressive stress of the compressively-stressed region 208 is at least 300 MPa.
  • the “compressive stress of the compressively-stressed region” may be the highest or average or median compressive stress in the compressively-stressed region. The preceding may also be expressed as the strengthened glass sheet having a surface compressive strength of at least 300 MPa.
  • the compressive stress of the compressively-stressed region 208 (or 210 ) is at least 300 MPa, or least 400 MPa, or at least 500 MPa, or at least 600 MPa.
  • the compressive stress of the compressively-stressed region 208 (or 210 ) will generally be a function of glass composition and layer depth of the compressively-stressed region into the glass.
  • the layer depth of the compressively-stressed region 208 (or 210 ) is at least 20 microns.
  • this layer depth can be controlled to an extent by the conditions of the strengthening process, preferably ion-exchange process, used in forming the compressively-stressed region.
  • the layer depth of the compressively-stressed region 208 ( 210 ) is at least 20 microns, or at least 25 microns, or at least 30 microns, or at least 35 microns, or at least 40 microns, or at least 45 microns, or at least 50 microns.
  • the strengthened glass sheet 200 with the compressively-stressed region 208 (and/or 210 ) preferably has a central tensile-stressed region 212 with a tensile stress of at least 40 MPa.
  • the “tensile stress of the tensile-stressed region” may be the highest or average or median tensile stress in the tensile-stressed region.
  • the preceding may also be expressed as the strengthened glass sheet having an internal tensile strength of at least 40 MPa.
  • the tensile stress may be greater than 40 MPa, or greater than 45 MPa, or greater than 50 MPa, but less than 65 MPa, or less than 60 MPa, or less than 55 MPa.
  • the tensile-stressed region will generally occupy the region of the glass not occupied by the compressively-stressed region 208 (and/or 210 ).
  • the tensile-stressed region 212 is formed at the same time that the compressively-stressed region 208 (and/or 210 ) is formed, i.e., when compression is created in one region of the glass, tension is created in another region of the glass adjacent to the compressed region.
  • Example glass compositions for the conformable glass sheet and example methods of forming the conformable glass sheet will be described further below.
  • the glass material which is suitable for use strengthened glass article for use as the writeable erasable marker board is preferably comprised of an alkali aluminosilicate glass, due to the fact that these type of glasses generally possess sufficient optical properties and mechanical durability, for this writeable erasable device application, particularly when compared to plastic, soda lime glass and other non-alkali glass based materials.
  • FIG. 2 illustrates what is referred to as the shadow parallax.
  • Shadow parallax is the distance D between where the light ray (from a light source) contacts or impinges the first or front glass article surface 301 and where it contacts or impinges the second or back glass article surface 302 ; when that light ray is contacts the first or front surface at an angle of incidence of 60° ( ⁇ 1 ) and the glass exhibits a refractive index of n.
  • ⁇ 1 60°
  • n refractive index of n.
  • a mark placed on the front surface of the writeable erasable marker board will cast a shadow on the back surface which will be offset by distance D.
  • the strengthened glass article exhibit a shadow parallax D of less than 1.73/n at an angle of incidence of 60°.
  • the shadow parallax D is less than 1.15 mm, which is acceptable for use with typical marker board markers.
  • FIG. 3 illustrates shadow parallax as a function of glass thickness for 8 glass samples, with a glass refractive index of 1.5 and an angle of incidence of 60°.
  • Samples A-D exhibit both the requisite thickness of less than 2 mm and a shadow parallax D of less than 1.15, while samples E-H exhibit thicknesses above 2 mm and larger shadow parallax values and thus are glass articles which are not suitable for use as writeable erasable marker board.
  • the strengthened glass articles additionally exhibit certain mechanical properties which make it suitable for use as writeable erasable marker board or device. Those properties, include, but are not limited to, a fracture toughness of greater than 0.75 MPa ⁇ m 1/2 , an MOR of greater than 350 MPa, a Vickers hardness of at least 600 kgf/mm 2 , a Young's Modulus of greater than 70 GPa, a thermal conductivity of less than 2.0 W/m° C., a refractive index of greater than 1.5031 @633 nm, and a surface compressive stress of greater than 300 MPa.
  • One measure of this durability feature which the aforementioned ion-exchanged glass article is capable of meeting is the ability of the ion exchanged glass article to withstand a standard drop testing requirement involving 5 impacts/drops from a height of one meter onto a hard surface such as concrete or granite.
  • the writeable erasable marker board comprises a strengthened glass which exhibits a fracture toughness of greater than 0.75 MPa ⁇ m1/2, and an MOR of greater than 475 MPa, preferably greater than 525 MPa.
  • the glass article exhibits an almost-flat, transparent surface which is defined as a having at least one surface exhibiting a R a roughness of less than 50 nm, preferably less than 15 nm and/or having a distinctness of image of >95.
  • one option is to polish the surface using standard polishing techniques so as to achieve the requisite surface roughness of less than 50 nm, preferably less than 15 nm.
  • the glass article can formed using a mold having a polished or non-textured surface so as to achieve the requisite surface roughness of less than 50 nm, preferably less than 15 nm.
  • manufacturing methods such as fusion draw or float draw can be utilized to achieve this.
  • the glass article may appear hazy or opaque, meaning that the article possesses at least one surface exhibiting a R a roughness greater than 50 nm and sometimes as large as up to 15 ⁇ m or greater.
  • the advantage of this opaque article feature is that the glass writeable eraser marker board exhibits desirable anti-smudge or fingerprint resistant properties and/or antiglare properties.
  • the glass article can be mechanically abraded (using standard abrasion techniques) and thereafter subject to an etching step which results in the removal of any subsurface damage which may have been created by the abrasion step. This combination of abrasion/etching steps can be performed either during or after the actual article formation.
  • the glass article can formed using a mold having a textured surface so as to achieve the requisite surface roughness of greater than 50 nm.
  • the strengthened glass article showing hazy or opaque properties has a distinctness-of-reflected image (DOI) of less than 95 and, in some embodiments, less than 90; in other embodiments, less than 85; in other embodiments, less than 80; in other embodiments, less than 75; and, in other embodiments, less than 50.
  • DOI values reported herein are measured at an incidence angle of 20° using a 2-side measurement method as described below.
  • the glass article has a DOI of less than 80, in still another embodiment, less than 40 and, in yet another embodiment, less than 20, when measured using the 2-side method.
  • Lower DOI is generally preferred for anti-glare functionality. Depending on the specific application, however, performance trade-offs can occur when the DOI is lowered.
  • the glass article has a DOI of less than 90 when measured at an angle of 20° from the specular direction using a 1-side sample preparation, as described below.
  • the term “specular direction” refers the angle from the surface of the glass article at which a reflected image is viewed/observed, and is also referred to as the “specular viewing angle.”
  • DOI is defined by method A of ASTM procedure D5767 (ASTM 5767), entitled “Standard Test Methods for Instrumental Measurements of Distinctness-of-Image Gloss of Coating Surfaces,” the contents of which are incorporated herein by reference in their entirety.
  • DOI is calculated according to the equation:
  • the Novo-gloss instrument uses a detector array in which the specular angle is centered around the highest value in the detector array.
  • DOI was also evaluated using 1-side (black absorber coupled to rear of glass) and 2-side (reflections allowed from both glass surfaces, nothing coupled to glass) methods.
  • the 1-side measurement allows the gloss, reflectance, and DOI to be determined for a single surface (e.g., a single roughened surface) of the glass article, whereas the 2-side measurement enables gloss, reflectance, and DOI to be determined for the glass article as a whole.
  • the ratio Ros/Rs is calculated from the average values obtained for Rs and Ros as described above.
  • the term “20° DOI,” unless otherwise specified, refers to DOI measurements in which the light is incident on the sample at 20° off the normal to the glass surface, as described in ASTM D5767.
  • the measurement of either DOI or common gloss using the 2-side method is preferably carried out in a dark room or enclosure such that measured value of these properties is zero when no sample is present.
  • Haze and DOI are simultaneously controlled to achieve optimal combinations in glass surfaces. Simultaneous control of haze and DOI yield more visually pleasing anti-glare surfaces, particularly for display applications, than control of either haze or gloss alone. This is because DOI is a much more accurate metric for matching the eye's response to blurring of reflected images, and a wider range of haze values can be created with low DOI levels than can be created with low gloss levels.
  • transmission haze and “haze” refer to the percentage of transmitted light scattered outside an angular cone of ⁇ 4.0° in accordance with ASTM procedure D1003. For an optically smooth surface, transmission haze is generally close to zero. Transmission haze of a glass sheet which is roughened on two sides (Haze 2-side ) can be related to the transmission haze of a glass sheet having an equivalent surface that is roughened on only one side (Haze 1-side ), according to the following approximation:
  • the glass article described herein has a transmission haze of less than about 50%; in other embodiments, less than about 40%; in other embodiments, less than about 30%; in other embodiments, less than about 20%; in other embodiments, less than about 10%; in other embodiments, less than about 5%; in other embodiments, less than about 3%; and in other embodiments, less than about 1%.
  • a minimal haze will lead the to smallest amount of display contrast reduction from randomly placed ambient light sources scattering stray light towards the viewer, while maintaining low DOI (governed by small-angle-scattering) will preserve the anti-glare effect of blurring the borders of reflected images, such that reflections are rendered less sharp, less noticeable or less objectionable.
  • the roughened surface has a RMS roughness in a range from about 50 nm up to about 500 nm, a distinctness of image (DOI) of less than about 85 and a transmission haze of less than 40%.
  • the transmission haze is less than about 20% and the DOI is less than about 80.
  • the transmission haze is less than about 10% and the DOI is less than about 75.
  • the transmission haze is less than about 10% and the DOI is less than about 50.
  • the transmission haze is less than about 5% and the DOI is less than about 85.
  • the transmission haze is less than about 5% and the DOI is less than about 75.
  • the transmission haze is less than about 5% and the DOI is less than about 50. In another such embodiment, the transmission haze is less than about 3% and the DOI is less than about 85. In another such embodiment, the transmission haze is less than about 3% and the DOI is less than about 75. In another such embodiment, the transmission haze is less than about 3% and the DOI is less than about 50. In another such embodiment, the transmission haze is less than about 1% and the DOI is less than about 85. In another such embodiment, the transmission haze is less than about 1% and the DOI is less than about 75. In another such embodiment, the transmission haze is less than about 1% and the DOI is less than about 50.
  • the markerboard includes, in addition to the strengthened glass article, an additional layer laminated to or otherwise attached to the strengthened glass article (e.g., through the use of an adhesive, including pressure-sensitive, solvent-based, water-based, heat-activated, photocurable, as well as e-beam curable adhesives.)
  • an adhesive including pressure-sensitive, solvent-based, water-based, heat-activated, photocurable, as well as e-beam curable adhesives.
  • FIG. 4A illustrates a writeable/erasable markerboard 300 A which would be particularly useful for those applications where there exist requirements to reduce the risk of user injury or equipment damage resulting from glass fragments becoming separated from the main body of the markerboard in the event of glass breakage.
  • This requirement is usually addressed by utilizing an organic (or plastic) film 306 , such as an anti-splinter film or other material, which is attached to the strengthened glass article 302 through the use of an adhesive 304 ; it is critical that film remain adhered to the strengthened glass article 302 after fracture and prevent fragments from separating from the main body.
  • an organic (or plastic) film 306 such as an anti-splinter film or other material
  • this anti-splinter film embodiment can be one wherein the glass article and the organic (or plastic) film are simply laminated together without the use of an adhesive (e.g., where the film is a thermoplastic or thermoset polymer including a urethane, a polyester, a polyolefin, a polyacrylate, a polycarbonate, a vinyl polymer, and optionally comprising a silane or titanate adhesion promoter) (not shown).
  • an adhesive e.g., where the film is a thermoplastic or thermoset polymer including a urethane, a polyester, a polyolefin, a polyacrylate, a polycarbonate, a vinyl polymer, and optionally comprising a silane or titanate adhesion promoter
  • An anti-splinter film for example, which typically is comprised of an optically clear adhesive and a transparent film, may include a polycarbonate, a polyethylene terephthalate (PET), polyester, transflective, and/or an acrylic material, and may include multiple layers of film. Additional materials may be bonded or otherwise added between the glass panel and the film and/or behind the film. Suitable films which may be utilized to provide this anti-splinter functionality include OQ1030 Lexan®, available from General Electric Corporation, Mylar® or Melinex®, available from DuPont Corporation, or similar products such as polyester films available from Mitsubishi, SKC, or transflective films available from 3M. It is contemplated that other materials besides the aforementioned films can provide the requisite anti-film functionality, including paints or adhesives, so long as they are strongly adhered to the glass.
  • this antisplinter, film in whatever form may additionally include decorative functionality.
  • films of a variety of colors and/or films that have indicia, printed markings, pictures, illustrations, background color or other decorations can be utilized or the film may comprise electronic or magnetic properties.
  • writeable/erasable markerboard 300 B includes a decoration film or layer 308 which is attached directly to the strengthened glass layer 302 .
  • the decorative layer can comprise any material which can be applied in a pattern to form a design which can be observed through the glass article as viewed from the opposite non-decorative glass surface side. Materials which may be useful for this decorative layer include paints, decals or inks (applied by, for example, spray, ink jet, screen print, or roller application).
  • FIG. 5A illustrates the simplest form of this embodiment wherein markerboard 400 A includes, in addition to the strengthened glass article 402 , an additional ferrous steel or magnetic layer 410 positioned or attached to the strengthened glass article through the use of an adhesive 404 .
  • Magnetic properties are specified in various standards documents, such as, for instance, the Magnetic Materials Producers Association's MMPA Standard No. 0100-00 entitled Standard Specifications for Permanent Magnet Materials and references therein. Magnets are often specified by their Maximum Energy Product, often denoted (BH)max. “Weak” magnets are typically characterized in having Maximum Energy Product values ⁇ 10 MGOe and sometimes ⁇ 5 MGOe or even ⁇ 1 MGOe. It has been found that thin, strengthened glass enables such weak magnets to adhere to the vertical glass surface with a ferrous steel backing plate, whereas much stronger magnets typically characterized by having Maximum Energy Product values >10 MGOe and often >20 MGOe, are required to enable adherence to thicker glass plates.
  • BH Maximum Energy Product
  • a markerboard which includes, in addition to the strengthened glass article an additional ferrous steel or magnetic layer positioned or attached to at least one side of the strengthened glass such that when the marker board is vertical, a permanent “weak” magnet with maximum energy product of less than 10 MGOe, less than 5 MGOe, less than 1 MGOe will remain attached to the glass sheet through magnetic force only.
  • Writable/erasable markerboard 400 B includes, in addition to the strengthened glass article 402 , an organic (or plastic) film 406 , such as an anti-splinter film or other material (as previously mentioned), which is attached to the strengthened glass article 402 through the use of an adhesive layer 404 A.
  • This embodiment further includes a ferrous steel or magnetic layer 410 positioned or attached to film 406 through the use of an adhesive 404 B.
  • the writeable/erasable markerboard 400 C includes, in addition to the strengthened glass article 402 , a ferrous steel or magnetic layer 410 , positioned or attached via an adhesive 404 A to a decoration film or layer 408 which is attached directly to the strengthened glass layer 402 .
  • Writable/erasable markerboard 400 D includes a ferrous steel or magnetic layer 410 positioned or attached via an adhesive 404 B to a decoration film or layer 408 which is attached directly to an organic (or plastic) film 406 , such as an anti-splinter film or other material (as previously mentioned).
  • the first side of a strengthened glass layer 402 is positioned or attached via the use of an second adhesive 404 A.
  • Alternative embodiments allow for variation of the layers or additional layers, for example such that the anti-splinter layer 406 is on the surface, adhered to the strengthened glass layer 402 by adhesive 404 A, and the strengthened glass layer 402 is in direct contact with the decorative film 408 .
  • the writeable erasable marker board or device includes mounting means for mounting the strengthened glass sheet 200 to an object.
  • the mounting means can take on a variety of forms.
  • the mounting means which may be suitable include the following: (1) a magnetic layer on the back surface of the strengthened glass sheet; (2) an adhesive layer on the back surface of the strengthened glass sheet; (3) a static cling layer on the back surface of the strengthened glass sheet; (4) one or more mounting holes formed in the strengthened glass sheet; (5) one or more glass sheet hanging elements attached to the strengthened glass sheet; and (6) one or more glass sheet framing elements attached to the strengthened glass sheet.
  • the glass articles suitable for use as writeable eraser marker boards comprises an alkali aluminosilicate glass material due to their sufficient chemical durability and mechanical properties, for this writeable eraser marker boards application, particularly when compared to plastic and other non-alkali glass based materials.
  • a representative alkali aluminosilicate glass compositional family suitable for use as writeable eraser marker boards, comprises, in it's broadest embodiment, in mole percent as oxides on a batched basis, 40-80% SiO 2 , 0-28% Al 2 O 3 , 0-8% B 2 O 3 , 0-18% Li 2 O, 0-10% Na 2 O, 0-11% K 2 O, 0-16% MgO, 0-10% MgF 2 , 0-8% CaO, 0-15% CaF 2 , 0-20% SrO, 0-12% BaO, 0-8% ZnO, 0-20% P 2 O 5 , 0-8% TiO 2 , 0-5% ZrO 2 , 0-1% SnO 2 , 0-1 Sb 2 O 3 , 0-1% As 2 O 3 .
  • the alkali alumininosilicate glass specifically comprises: 60-70 mol % SiO 2 ; 6-14 mol % Al 2 O 3 ; 0-15 mol % B 2 O 3 ; 0-15 mol % Li 2 O; 0-20 mol % Na 2 O; 0-10 mol % K 2 O; 0-8 mol % MgO; 0-10 mol % CaO; 0-5 mol % ZrO 2 ; 0-1 mol % SnO 2 ; 0-1 mol % CeO 2 ; less than 50 ppm As 2 O 3 ; and less than 50 ppm Sb 2 O 3 ; wherein 12 mol % ⁇ Li 2 O+Na 2 O+K 2 O ⁇ 20 mol % and 0 mol %
  • the alkali aluminosilicate glass comprises, consists essentially of, or consists of: 61 mol % ⁇ SiO 2 ⁇ 75 mol %; 7 mol % ⁇ Al 2 O 3 ⁇ 15 mol %; 0 mol % ⁇ B 2 O 3 ⁇ 12 mol %; 9 mol % ⁇ Na 2 O ⁇ 21 mol %; 0 mol % ⁇ K 2 O ⁇ 4 mol %; 0 mol % ⁇ MgO ⁇ 7 mol %; and 0 mol % ⁇ CaO ⁇ 3 mol %.
  • alkali aluminosilicate glass comprises, at least 50 mol % SiO 2 , less than 10 mol % B 2 O 3 , and at least 8 mol % Na 2 O, wherein the aluminoborosilicate glass is ion exchangeable, wherein a ratio
  • Al 2 O 3 (mol %)>B 2 O 3 (mol %) and the modifiers are Na 2 O and, optionally, at least one oxide selected from the group consisting of alkali metal oxides R 2 O other than Na 2 O and alkaline earth oxides RO, wherein the aluminoborosilicate glass has a Young's modulus of less than about 69 GPa, and wherein ⁇ 6 mol % ⁇ modifiers ⁇ Al 2 O 3 ⁇ 3 mol %.
  • the glass selected for use as the writeable erasable marked board or device should additionally exhibit good formability. As such, it should be capable of being easily formed in the desired writeable erasable marker board or device. Specifically, it is desirable that the glass material utilized is capable of easily being formed into the desired writeable erasable marker board or device through the utilization of standard processing including, but not limited to techniques such as pressing, sagging, vacuum sagging, sheet coin and combinations thereof
  • these thin strengthened alkali-alumino silicate based writeable erasable marker boards can be formed into a laminate with a low modulus polymer and/or foam-type backing and be further utilized as a whiteboard device which provides the dual functionality of a sound damping architectural panel.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)
  • Glass Compositions (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Joining Of Glass To Other Materials (AREA)
US14/093,649 2012-11-30 2013-12-02 Durable glass articles for use as writable erasable marker boards Abandoned US20140154661A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US14/093,649 US20140154661A1 (en) 2012-11-30 2013-12-02 Durable glass articles for use as writable erasable marker boards
EP14815935.3A EP3077217A1 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards
PCT/US2014/038802 WO2015084431A1 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards
US14/282,570 US9604492B2 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards
JP2016535083A JP6467423B2 (ja) 2012-11-30 2014-05-20 筆記消去自在のマーカーボードとして使用される耐久ガラス品
CN201480074751.6A CN105960336B (zh) 2012-11-30 2014-05-20 用作可书写可擦除的标记板的耐用玻璃制品
KR1020167017805A KR20160094429A (ko) 2012-11-30 2014-05-20 기록 가능하고 소거 가능한 마커 보드로 사용하기 위한 내구성 유리 제품
TW103117792A TWI623507B (zh) 2012-11-30 2014-05-21 用作可寫可擦之手寫板的耐用玻璃製品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261731962P 2012-11-30 2012-11-30
US14/093,649 US20140154661A1 (en) 2012-11-30 2013-12-02 Durable glass articles for use as writable erasable marker boards

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/282,570 Continuation-In-Part US9604492B2 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards

Publications (1)

Publication Number Publication Date
US20140154661A1 true US20140154661A1 (en) 2014-06-05

Family

ID=49911783

Family Applications (2)

Application Number Title Priority Date Filing Date
US14/093,649 Abandoned US20140154661A1 (en) 2012-11-30 2013-12-02 Durable glass articles for use as writable erasable marker boards
US14/282,570 Expired - Fee Related US9604492B2 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards

Family Applications After (1)

Application Number Title Priority Date Filing Date
US14/282,570 Expired - Fee Related US9604492B2 (en) 2012-11-30 2014-05-20 Durable glass articles for use as writable erasable marker boards

Country Status (7)

Country Link
US (2) US20140154661A1 (enrdf_load_stackoverflow)
EP (1) EP3077217A1 (enrdf_load_stackoverflow)
JP (1) JP6467423B2 (enrdf_load_stackoverflow)
KR (1) KR20160094429A (enrdf_load_stackoverflow)
CN (1) CN105960336B (enrdf_load_stackoverflow)
TW (1) TWI623507B (enrdf_load_stackoverflow)
WO (1) WO2015084431A1 (enrdf_load_stackoverflow)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9593042B2 (en) 2014-10-08 2017-03-14 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US20170168606A1 (en) * 2015-11-20 2017-06-15 Zhang Lu Interactive high-clarity glass electronic whiteboard
US20170269466A1 (en) * 2014-07-30 2017-09-21 Corning Incorporated High contrast, glass-based, writeable/erasable front projection screens
US9779639B1 (en) * 2014-04-04 2017-10-03 Revolution Sign And Media Group Llc Structurally compact display assembly
US9809050B1 (en) 2017-05-08 2017-11-07 Revolution Sign And Media Group Llc Structurally compact display assembly with pressure fit
US20180031743A1 (en) * 2014-05-15 2018-02-01 Asahi Glass Company, Limited Glass article and production method for glass article
US9908811B2 (en) 2015-12-11 2018-03-06 Corning Incorporated Fusion formable glass-based articles including a metal oxide concentration gradient
US9969208B1 (en) * 2017-06-30 2018-05-15 David R. Hall Magnetic whiteboard utility holder
US10017417B2 (en) 2016-04-08 2018-07-10 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
AT16020U1 (de) * 2017-03-15 2018-11-15 Wolfgang Vovsik Mag Tafel für Schulungszwecke
US10482792B2 (en) 2014-04-04 2019-11-19 Revolution Sign And Media Group Llc Structurally compact display assembly with pressure fit
US10579106B2 (en) 2015-07-21 2020-03-03 Corning Incorporated Glass articles exhibiting improved fracture performance
US10589565B1 (en) * 2017-03-03 2020-03-17 Kelly J. Taylor Erasable Writable Materials
US10723167B2 (en) 2014-04-04 2020-07-28 Revolution Sign And Media Group Llc Structurally compact backlit display assembly
US10921492B2 (en) 2018-01-09 2021-02-16 Corning Incorporated Coated articles with light-altering features and methods for the production thereof
US11021393B2 (en) 2014-11-04 2021-06-01 Corning Incorporated Deep non-frangible stress profiles and methods of making
US11079309B2 (en) 2013-07-26 2021-08-03 Corning Incorporated Strengthened glass articles having improved survivability
US11084756B2 (en) 2014-10-31 2021-08-10 Corning Incorporated Strengthened glass with ultra deep depth of compression
US11492291B2 (en) 2012-02-29 2022-11-08 Corning Incorporated Ion exchanged glasses via non-error function compressive stress profiles
CN115650601A (zh) * 2016-01-21 2023-01-31 Ａｇｃ株式会社 化学强化玻璃以及化学强化用玻璃
US20230069661A1 (en) * 2019-05-16 2023-03-02 Corning Incorporated Glass compositions and methods with steam treatment haze resistance
US11613103B2 (en) 2015-07-21 2023-03-28 Corning Incorporated Glass articles exhibiting improved fracture performance
US11634359B2 (en) 2014-02-24 2023-04-25 Corning Incorporated Strengthened glass with deep depth of compression
US20230183125A1 (en) * 2017-08-24 2023-06-15 Corning Incorporated Glasses with improved tempering capabilities
US11760685B2 (en) 2017-11-17 2023-09-19 Corning Incorporated Water-containing glass-based articles with high indentation cracking threshold
US11767258B2 (en) 2018-11-16 2023-09-26 Corning Incorporated Glass compositions and methods for strengthening via steam treatment
US11878941B2 (en) 2014-06-19 2024-01-23 Corning Incorporated Glasses having non-frangible stress profiles
US11912620B2 (en) 2011-11-30 2024-02-27 Corning Incorporated Colored alkali aluminosilicate glass articles
US11940593B2 (en) 2020-07-09 2024-03-26 Corning Incorporated Display articles with diffractive, antiglare surfaces and methods of making the same
US11963320B2 (en) 2016-04-08 2024-04-16 Corning Incorporated Glass-based articles including a stress profile comprising two regions
US12122711B2 (en) 2019-05-16 2024-10-22 Corning Incorporated Steam strengthenable glass compositions with low phosphorous content
US12195384B2 (en) 2013-05-07 2025-01-14 Corning Incorporated Scratch-resistant laminates with retained optical properties
US12404204B2 (en) 2019-05-16 2025-09-02 Corning Incorporated Glasses with modified young's modulus profile

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108454275A (zh) * 2014-07-29 2018-08-28 上海易教信息科技有限公司 防眩光黑色透视玻璃及其生产方法及智能黑板
DK178443B1 (en) * 2014-12-01 2016-02-29 Dampa Aps Sound absorbing dry erase board
CN105864717A (zh) * 2016-05-31 2016-08-17 德江县三和玻璃有限公司 一种夜景玻璃
JPWO2018061885A1 (ja) * 2016-09-29 2019-07-11 日本電気硝子株式会社 積層体及び筆記用ボード
TW201918700A (zh) * 2017-05-05 2019-05-16 美商3M新設資產公司 散射測量系統及其使用方法
CN107840570A (zh) * 2017-10-26 2018-03-27 中国南玻集团股份有限公司 铝硅酸盐玻璃及其制备方法、电子设备
WO2019108816A1 (en) 2017-11-30 2019-06-06 Corning Incorporated Patterned glass articles and methods of making the same
CN112154357A (zh) * 2018-05-21 2020-12-29 Ａｇｃ株式会社 防眩性透明基体及具备该防眩性透明基体的显示装置
CN112110646B (zh) * 2020-09-25 2022-02-11 成都光明光电股份有限公司 玻璃材料、梯度折射率玻璃及其制造方法
CN112079565B (zh) * 2020-09-25 2022-04-15 成都光明光电股份有限公司 玻璃组合物、梯度折射率玻璃及其制造方法
CN113135655A (zh) * 2021-04-21 2021-07-20 彩虹集团（邵阳）特种玻璃有限公司 一种可快速离子交换的含硼铝硅酸盐玻璃
WO2023027932A1 (en) * 2021-08-25 2023-03-02 Corning Incorporated Textured glass-based articles
TW202344488A (zh) * 2022-02-01 2023-11-16 日商大日本印刷股份有限公司 玻璃基材、玻璃積層體、顯示裝置用構件、顯示裝置、玻璃基材之檢查方法、及顯示裝置之製造方法

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4870735U (enrdf_load_stackoverflow) * 1971-12-09 1973-09-06
JPS5322866U (enrdf_load_stackoverflow) * 1976-08-05 1978-02-25
JPS56501012A (enrdf_load_stackoverflow) 1979-08-10 1981-07-23
JPS60141285U (ja) * 1984-02-28 1985-09-19 ニチレイマグネツト株式会社 磁石付黒板並びに掲示板兼用鏡
DE20108703U1 (de) * 2001-05-25 2001-09-13 Wilhelm Dahle Büro-Technik GmbH & Co KG, 96450 Coburg Beschreibbare Tafel für Unterrichtszwecke o.dgl.
CN2542455Y (zh) * 2002-06-10 2003-04-02 陈学民 玻璃白板
US20060073466A1 (en) * 2004-08-17 2006-04-06 Benjamin Solomon Glass dry-erase board
US20110091860A1 (en) 2008-05-29 2011-04-21 American Glass Top Co. Magnetic glass dry erase board
KR20110050522A (ko) * 2008-08-21 2011-05-13 코닝 인코포레이티드 전자 장치용 내구성 유리 하우징/인클로저
JP2011011376A (ja) * 2009-06-30 2011-01-20 Dainippon Printing Co Ltd インモールド用ハードコート転写箔
US8802581B2 (en) 2009-08-21 2014-08-12 Corning Incorporated Zircon compatible glasses for down draw
US8598771B2 (en) * 2009-09-15 2013-12-03 Corning Incorporated Glass and display having anti-glare properties
DE202010009006U1 (de) 2010-11-10 2011-02-24 Halco Gmbh Multifunktionale Kommunikations-Verbundplatte
TWI588104B (zh) * 2010-12-14 2017-06-21 康寧公司 用於強化玻璃之熱處理
TWI591039B (zh) * 2011-07-01 2017-07-11 康寧公司 具高壓縮應力的離子可交換玻璃
US10280112B2 (en) * 2011-08-19 2019-05-07 Corning Incorporated Ion exchanged glass with high resistance to sharp contact failure and articles made therefrom
US8556637B2 (en) * 2011-10-25 2013-10-15 Corning Incorporated Method and apparatus for forming a writable erasable area on an object

Cited By (76)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11912620B2 (en) 2011-11-30 2024-02-27 Corning Incorporated Colored alkali aluminosilicate glass articles
US11492291B2 (en) 2012-02-29 2022-11-08 Corning Incorporated Ion exchanged glasses via non-error function compressive stress profiles
US12195384B2 (en) 2013-05-07 2025-01-14 Corning Incorporated Scratch-resistant laminates with retained optical properties
US11079309B2 (en) 2013-07-26 2021-08-03 Corning Incorporated Strengthened glass articles having improved survivability
US11634359B2 (en) 2014-02-24 2023-04-25 Corning Incorporated Strengthened glass with deep depth of compression
US10723167B2 (en) 2014-04-04 2020-07-28 Revolution Sign And Media Group Llc Structurally compact backlit display assembly
US9779639B1 (en) * 2014-04-04 2017-10-03 Revolution Sign And Media Group Llc Structurally compact display assembly
US10482792B2 (en) 2014-04-04 2019-11-19 Revolution Sign And Media Group Llc Structurally compact display assembly with pressure fit
US11448802B2 (en) 2014-05-15 2022-09-20 AGC Inc. Glass article and production method for glass article
US11280939B2 (en) * 2014-05-15 2022-03-22 AGC Inc. Glass article and production method for glass article
US20180031743A1 (en) * 2014-05-15 2018-02-01 Asahi Glass Company, Limited Glass article and production method for glass article
US11878941B2 (en) 2014-06-19 2024-01-23 Corning Incorporated Glasses having non-frangible stress profiles
US12297145B2 (en) 2014-06-19 2025-05-13 Corning Incorporated Glasses having non-frangible stress profiles
JP2020194191A (ja) * 2014-07-30 2020-12-03 コーニング インコーポレイテッド 高コントラストの、ガラスに基づく書込み可能／消去可能な前面投影スクリーン
US20170269466A1 (en) * 2014-07-30 2017-09-21 Corning Incorporated High contrast, glass-based, writeable/erasable front projection screens
US10509307B2 (en) * 2014-07-30 2019-12-17 Corning Incorporated High contrast, glass-based, writeable/erasable front projection screens
US10364182B2 (en) 2014-10-08 2019-07-30 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US10730791B2 (en) 2014-10-08 2020-08-04 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US10532947B2 (en) 2014-10-08 2020-01-14 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US11465937B2 (en) 2014-10-08 2022-10-11 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US9593042B2 (en) 2014-10-08 2017-03-14 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US11459270B2 (en) 2014-10-08 2022-10-04 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US10294151B2 (en) 2014-10-08 2019-05-21 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US11220456B2 (en) 2014-10-08 2022-01-11 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US10266447B2 (en) 2014-10-08 2019-04-23 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US10259746B2 (en) 2014-10-08 2019-04-16 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US12187639B2 (en) 2014-10-08 2025-01-07 Corning Incorporated Glasses and glass ceramics including a metal oxide concentration gradient
US11746046B2 (en) 2014-10-31 2023-09-05 Corning Incorporated Strengthened glass with ultra deep depth of compression
US11084756B2 (en) 2014-10-31 2021-08-10 Corning Incorporated Strengthened glass with ultra deep depth of compression
US11021393B2 (en) 2014-11-04 2021-06-01 Corning Incorporated Deep non-frangible stress profiles and methods of making
US11377388B2 (en) 2014-11-04 2022-07-05 Corning Incorporated Deep non-frangible stress profiles and methods of making
US10579106B2 (en) 2015-07-21 2020-03-03 Corning Incorporated Glass articles exhibiting improved fracture performance
US11267228B2 (en) 2015-07-21 2022-03-08 Corning Incorporated Glass articles exhibiting improved fracture performance
US11613103B2 (en) 2015-07-21 2023-03-28 Corning Incorporated Glass articles exhibiting improved fracture performance
US10372275B2 (en) * 2015-11-20 2019-08-06 Opton (Shunchang) Optics Co., Ltd. Interactive high-clarity glass electronic whiteboard
JP2017134812A (ja) * 2015-11-20 2017-08-03 オプトン（シュンチャン）オプティックス カンパニー，リミテッドＯｐｔｏｎ （Ｓｈｕｎｃｈａｎｇ） Ｏｐｔｉｃｓ Ｃｏ．， ＬＴＤ 対話型高精細ガラス電子ホワイトボード
US20170168606A1 (en) * 2015-11-20 2017-06-15 Zhang Lu Interactive high-clarity glass electronic whiteboard
US11472734B2 (en) 2015-12-11 2022-10-18 Corning Incorporated Fusion-formable glass-based articles including a metal oxide concentration gradient
US12297141B2 (en) 2015-12-11 2025-05-13 Corning Incorporated Fusion-formable glass-based articles including a metal oxide concentration gradient
US9908811B2 (en) 2015-12-11 2018-03-06 Corning Incorporated Fusion formable glass-based articles including a metal oxide concentration gradient
US11878936B2 (en) 2015-12-11 2024-01-23 Corning Incorporated Fusion-formable glass-based articles including a metal oxide concentration gradient
US10787387B2 (en) 2015-12-11 2020-09-29 Corning Incorporated Fusion-formable glass-based articles including a metal oxide concentration gradient
CN115650601A (zh) * 2016-01-21 2023-01-31 Ａｇｃ株式会社 化学强化玻璃以及化学强化用玻璃
US11174197B2 (en) 2016-04-08 2021-11-16 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US11279652B2 (en) 2016-04-08 2022-03-22 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US11963320B2 (en) 2016-04-08 2024-04-16 Corning Incorporated Glass-based articles including a stress profile comprising two regions
US10570059B2 (en) 2016-04-08 2020-02-25 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US11691913B2 (en) 2016-04-08 2023-07-04 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US10017417B2 (en) 2016-04-08 2018-07-10 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US12116311B2 (en) 2016-04-08 2024-10-15 Corning Incorporated Glass-based articles including a metal oxide concentration gradient
US11772410B1 (en) 2017-03-03 2023-10-03 Kelly J. Taylor Erasable writable materials
US10589565B1 (en) * 2017-03-03 2020-03-17 Kelly J. Taylor Erasable Writable Materials
US12240265B1 (en) 2017-03-03 2025-03-04 Kelly J. Taylor Erasable writable substrates and methods of manufacture
US11021004B1 (en) 2017-03-03 2021-06-01 Kelly J. Taylor Erasable writable materials
AT16020U1 (de) * 2017-03-15 2018-11-15 Wolfgang Vovsik Mag Tafel für Schulungszwecke
US9809050B1 (en) 2017-05-08 2017-11-07 Revolution Sign And Media Group Llc Structurally compact display assembly with pressure fit
US9969208B1 (en) * 2017-06-30 2018-05-15 David R. Hall Magnetic whiteboard utility holder
US20230183125A1 (en) * 2017-08-24 2023-06-15 Corning Incorporated Glasses with improved tempering capabilities
US11760685B2 (en) 2017-11-17 2023-09-19 Corning Incorporated Water-containing glass-based articles with high indentation cracking threshold
US12054423B2 (en) 2017-11-17 2024-08-06 Corning Incorporated Water-containing glass-based articles with high indentation cracking threshold
US10921492B2 (en) 2018-01-09 2021-02-16 Corning Incorporated Coated articles with light-altering features and methods for the production thereof
US12019209B2 (en) 2018-01-09 2024-06-25 Corning Incorporated Coated articles with light-altering features and methods for the production thereof
US12234182B2 (en) 2018-11-16 2025-02-25 Corning Incorporated Glass compositions and methods for strengthening via steam treatment
US11767258B2 (en) 2018-11-16 2023-09-26 Corning Incorporated Glass compositions and methods for strengthening via steam treatment
US20230069661A1 (en) * 2019-05-16 2023-03-02 Corning Incorporated Glass compositions and methods with steam treatment haze resistance
US12122711B2 (en) 2019-05-16 2024-10-22 Corning Incorporated Steam strengthenable glass compositions with low phosphorous content
US12060298B2 (en) 2019-05-16 2024-08-13 Corning Incorporated Glass compositions and methods with steam treatment haze resistance
US11767255B2 (en) * 2019-05-16 2023-09-26 Corning Incorporated Glass compositions and methods with steam treatment haze resistance
US12404204B2 (en) 2019-05-16 2025-09-02 Corning Incorporated Glasses with modified young's modulus profile
US12147009B2 (en) 2020-07-09 2024-11-19 Corning Incorporated Textured region to reduce specular reflectance including a low refractive index substrate with higher elevated surfaces and lower elevated surfaces and a high refractive index material disposed on the lower elevated surfaces
US11977206B2 (en) 2020-07-09 2024-05-07 Corning Incorporated Display articles with diffractive, antiglare surfaces and thin, durable antireflection coatings
US11971519B2 (en) 2020-07-09 2024-04-30 Corning Incorporated Display articles with antiglare surfaces and thin, durable antireflection coatings
US11940593B2 (en) 2020-07-09 2024-03-26 Corning Incorporated Display articles with diffractive, antiglare surfaces and methods of making the same
US12352924B2 (en) 2020-07-09 2025-07-08 Corning Incorporated Display articles with diffractive, antiglare surfaces and methods of making the same
US12360290B2 (en) 2020-07-09 2025-07-15 Corning Incorporated Display articles with antiglare surfaces and thin, durable antireflection coatings
US12386101B2 (en) 2020-07-09 2025-08-12 Corning Incorporated Textured region of a substrate to reduce specular reflectance incorporating surface features with an elliptical perimeter or segments thereof, and method of making the same

Also Published As

Publication number Publication date
US20140255903A1 (en) 2014-09-11
US9604492B2 (en) 2017-03-28
TWI623507B (zh) 2018-05-11
JP2017505725A (ja) 2017-02-23
EP3077217A1 (en) 2016-10-12
WO2015084431A1 (en) 2015-06-11
JP6467423B2 (ja) 2019-02-13
TW201522268A (zh) 2015-06-16
CN105960336A (zh) 2016-09-21
KR20160094429A (ko) 2016-08-09
CN105960336B (zh) 2018-06-22

Similar Documents

Publication Publication Date Title
US9604492B2 (en) Durable glass articles for use as writable erasable marker boards
US10917989B2 (en) Display screen protector
US11899865B2 (en) Vehicle interior systems having a curved cover glass and a display or touch panel and methods for forming the same
US10816840B2 (en) Glass plate and display device
US11448802B2 (en) Glass article and production method for glass article
US10732753B2 (en) Vehicle interior systems having a curved cover glass and a display or touch panel and methods for forming the same
WO2019159983A1 (ja) カバーガラス、およびインセル型液晶表示装置
JP2017505725A5 (enrdf_load_stackoverflow)
JP2018067709A (ja) 電子デバイス構造およびその中で使用される超薄型ガラスシート
CN111727177B (zh) 保护玻璃和内嵌式液晶显示装置
TW202340816A (zh) 用於顯示器的基於光導器的無電面板、相關的方法及載具內部系統
JP6801762B2 (ja) 表示装置
CN110497665B (zh) 层叠体及显示装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: CORNING INCORPORATED, NEW YORK

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BOOKBINDER, DANA CRAIG;DOMEY, JEFFREY JOHN;FENTON, MATTHEW WADE;AND OTHERS;SIGNING DATES FROM 20140127 TO 20140204;REEL/FRAME:032183/0537

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION