Abstract: A glass substrate chemical strengthening furnace apparatus includes a bottom portion and a side wall extending from an edge of the bottom portion, where the bottom portion and the side wall define a reaction space; and a plurality of heaters providing heat to the reaction space. The bottom portion includes an inclined portion located at a center and a collection portion disposed between the inclined portion and the side wall, the collection portion is in a groove shape in which an upper surface thereof is further recessed than the inclined portion, and the plurality of heaters includes a bottom heater disposed in the bottom portion or adjacent to the bottom portion.

Abstract: A glass article includes a first surface, a second surface which is opposite the first surface, a first compressive region which extends to a first compression depth in a thickness direction from the first surface, a second compressive region which extends to a second compression depth from the second surface, and a tensile region which is disposed between the first compressive region and the second compressive region. A stress profile of the first compressive region includes a first point and a first inflection point, the first inflection point is located between the first point and the first surface, a depth from the first surface to the first point is 45 to 55% of the first compression depth from the first surface, stress at the first point is greater than 50% of compressive stress of the first surface, and a thickness of the glass article is 0.01 to 0.05 mm.

Abstract: A method for producing a glass article is provided. The method for producing a glass article, the method including preparing a glass to be processed, the glass comprising a glass bulk and a low-refractive surface layer disposed on the glass bulk, and etching away the low-refractive surface layer to form an etched glass, wherein the etching away the low-refractive surface layer comprises: cleaning the low-refractive surface layer with an acid solution; and cleaning the low-refractive surface layer with a base solution after the cleaning it with the acid solution.

Abstract: A glass article includes a first surface, a second surface which is opposite the first surface, a first compressive region which extends to a first compression depth in a thickness direction from the first surface, a second compressive region which extends to a second compression depth from the second surface, and a tensile region which is disposed between the first compressive region and the second compressive region. A stress profile of the first compressive region includes a first point and a first inflection point, the first inflection point is located between the first point and the first surface, a depth from the first surface to the first point is 45 to 55% of the first compression depth from the first surface, stress at the first point is greater than 50% of compressive stress of the first surface, and a thickness of the glass article is 0.01 to 0.05 mm.

Abstract: A window substrate for protecting an electronic display device, the window substrate includes: a first substrate; a second substrate; and an interlayer having opposed sides disposed between the first substrate and the second substrate, with one side of the interlayer being in contact with the first substrate, and the other side of the interlayer being in contact with the second substrate, wherein the first substrate has a first thickness, the second substrate has a second thickness, and the interlayer has a third thickness, and wherein the sum of the first thickness, the second thickness, and the third thickness is about 190 ?m or less.

Abstract: A method for producing a glass article is provided. The method for producing a glass article, the method including preparing a glass to be processed, the glass comprising a glass bulk and a low-refractive surface layer disposed on the glass bulk, and etching away the low-refractive surface layer to form an etched glass, wherein the etching away the low-refractive surface layer comprises: cleaning the low-refractive surface layer with an acid solution; and cleaning the low-refractive surface layer with a base solution after the cleaning it with the acid solution.

Abstract: A glass substrate has a first surface, a second surface opposite to the first surface, and a thickness from the first surface to the second surface. The glass substrate includes a first region, a second region, and a third region. The first region extends from the first surface a first depth into the glass substrate and has a first compressive stress. The second region extends from the second surface a second depth into the glass substrate and has a second compressive stress different from the first compressive stress. The third region is between the first region and the second region. In the glass substrate, the first compressive stress has a maximum value at a location between the first surface and the first depth, and the second compressive stress has a maximum value at a location between the second surface and the second depth.

Abstract: A glass strength evaluation apparatus includes a support unit, a plate disposed on the support unit and including a surface on which a glass article, which is a target to be tested, is disposed, a fixing jig disposed on the plate and a power unit lifting up or down the fixing jig in a vertical direction toward the surface of the plate. The fixing jig includes a body portion, which extends in the vertical direction and lower fixing bolts. A press-fitting member insertion opening is recessed from a bottom of the body portion to extend in an upward direction, lower fixing bolt insertion holes penetrate the body portion, from one side of the body portion, in a first horizontal direction intersecting the vertical direction, to be extended to the press-fitting insertion opening, and lower fixing bolts are coupled into the lower fixing bolt insertion holes.

Abstract: A window drop test apparatus includes a support protruding in a first direction from the prop, and a guide portion that defines a drop space together with the support, where a drop test is performed through the drop space.

Abstract: A glass product includes: a first compressive region at a first surface; a second compressive region at a second surface; and a tensile region between the first and second compression regions. A stress profile of the first compressive region includes a first trend line between the first surface and a first transition point, a second trend line between the first transition point and a second transition point, and a third trend line between the second transition point and a point at a first compression depth from the first surface. A depth from the first surface to the first transition point is 10 ?m or less, a stress at the first transition point is 200 MPa or greater, a depth from the first surface to the second transition point is 50 ?m to 80 ?m, and a stress at the second transition point is 40 MPa to 100 MPa.

Abstract: In a method of fabricating a cover window, the method includes: forming, on a glass article having a flat upper surface, a mask layer including water glass and a recess portion having a partially recessed upper surface; and etching the mask layer and the glass article to form a cover window having a partially recessed upper surface.

Abstract: A display device includes a display panel including panel pads adjacent to the side surface of a display panel; connection pads disposed on the side surface of the display panel and connected to the panel pads; and a circuit board disposed on the side surface of the display panel and including lead signal lines directly bonded to the connection pads, wherein the connection pads include a first connection pad, a second connection pad disposed on the first connection pad, and a third connection pad disposed on the second connection pad, and the first connection pad is in contact with corresponding one of the panel pads, and the third connection pad is directly bonded to corresponding one of the lead signal lines.

Abstract: An embodiment provides a chemical strengthening system, including: a strengthening part in which chemical strengthening of a glass plate is performed; a heating part in which a post-heat treatment of the glass plate is performed; and a cassette in which the glass plate is loaded and which is movable between the strengthening part and the heating part. The cassette includes a lower support which supports a lower end portion of the glass plate, the lower support is rotatable with respect to an axis of rotation, and the axis of rotation does not move relatively within the cassette.

Abstract: A cover window, a manufacturing method of a cover window, and a display device including a cover window are provided. A cover window includes a folding portion and a non-folding portion, and the folding portion includes an inside surface that is compressed when folded and an outside surface that is stretched when folded, the folding portion includes a first layer adjacent to the outside surface, a second layer adjacent to the inside surface, and a third layer between the first layer and the second layer, the folding portion and the non-folding portion include at least one metal ion, a concentration of the metal ion included in the second layer is higher than a concentration of the metal ion included in the first layer, and the first layer includes a plurality of depletion regions.

Abstract: A manufacturing method of a display device includes: forming a laminate by laminating resins on first and second side surfaces of a glass; removing the resins along a laser irradiation line by irradiating a laser on the laminate; separating the laminate into a plurality of laminates by performing primary etching using an etching liquid composition; vertically stacking the plurality of laminates; and performing secondary chemical etching on a structure formed by stacking the plurality of laminates.

Abstract: A strengthened glass manufacturing apparatus and a strengthened glass manufacturing method are provided. The strengthened glass manufacturing apparatus includes a strengthening chamber including a first chamber having a first space, a preheating chamber including a second chamber having a second space, the second space being different from the first space, and a first induction coil in the preheating chamber.

Abstract: A glass article includes a flat portion and a side portion extending from the flat portion and bent in a thickness direction of the glass article, a base disposed on the flat portion and the side portion; and a Beilby layer disposed on the flat portion and not disposed on at least a part of the side portion.

Abstract: In a method of fabricating a cover window, the method includes: forming, on a glass article having a flat upper surface, a mask layer including water glass and a recess portion having a partially recessed upper surface; and etching the mask layer and the glass article to form a cover window having a partially recessed upper surface.

Abstract: A window drop test apparatus includes a support protruding in a first direction from the prop, and a guide portion that defines a drop space together with the support, where a drop test is performed through the drop space.

Abstract: A display device includes a display panel including panel pads adjacent to the side surface of a display panel; connection pads disposed on the side surface of the display panel and connected to the panel pads; and a circuit board disposed on the side surface of the display panel and including lead signal lines directly bonded to the connection pads, wherein the connection pads include a first connection pad, a second connection pad disposed on the first connection pad, and a third connection pad disposed on the second connection pad, and the first connection pad is in contact with corresponding one of the panel pads, and the third connection pad is directly bonded to corresponding one of the lead signal lines.