The invention provides an IG unit comprising two panes and a between-pane space located between the two panes. A desired surface of a selected one of the two panes bears a coating comprising both a transparent conductive oxide film, and an overcoat film located over the transparent conductive oxide film. The IG unit further comprises a bus bar and a transparent conductor bridge each located over the desired surface. The bus bar is spaced apart from the coating and is connected electrically to the transparent conductive oxide film by virtue of the transparent conductor bridge extending from the bus bar to a top surface of the overcoat film. In some embodiments, the IG unit further comprises a frit located over the desired surface and extending around a perimeter thereof. The bus bar is located over the frit. Certain embodiments provide a refrigerator having a door comprising such an IG unit.

The present invention discloses a vacuum glass component, wherein the vacuum glass component is formed by compounding two or a plurality of glass plates, and the peripheries of the two or a plurality of glass plates are sealed with each other through sealing part in air-tight manner, a gap remains between the sealing part and the edge of the glass plate, vacuum-pumping is performed between adjacent glass plates at the inner side of the sealing part, and the sealing part is isolated from the outer environment between adjacent glass plates at the outer side of the sealing part by filling seal gum, resin or plastic. The vacuum glass component make the outer side of the sealing part isolated from the outer environment by using seal gum, resin or plastic, thereby preventing the metal at the sealing part from forming a heat bridge and facilitating the later installation and use of vacuum glass component. Moreover, the surface at the side edge of the vacuum glass component can be trimmed to be parallel and level by setting seal gum, resin or plastic, thereby keeping the beautiful appearance of the vacuum glass component.

The glass panel unit includes a first glass panel, a second glass panel, a seal, an evacuated space, and a spacer. The second glass panel is placed opposite the first glass panel. The seal with a frame shape hermetically bonds the first glass panel and the second glass panel to each other. The evacuated space is enclosed by the first glass panel, the second glass panel, and the seal. The spacer is placed between the first glass panel and the second glass panel. The spacer contains polyimide represented by chemical formula (1):

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A glass unit according to the present invention includes a first glass plate, a second glass plate that is arranged facing the first glass plate with a predetermined interval therebetween and forms an internal space with the first glass plate, a sealing member that seals a gap at peripheral edges of the first glass plate and the second glass plate, and a plurality of spacers arranged between the first glass plate and the second glass plate. The internal space has been depressurized to a vacuum state, or a predetermined gas has been injected into the internal space. The first and second glass plates each have a thickness of 5 mm or less, the pitch of the spacers is 15 mm or more, and the difference between the height of the highest spacer and the height of the lowest spacer is 0.01 mm or less.

A vacuum insulating glazing unit with an infrared reflecting coating, having a first glass pane with a thickness Z.sub.1, bearing the infrared reflecting coating on the inner pane face, and an energetical absorptance EA.sub.1; a second glass pane with a thickness Z.sub.2 and an energetical absorptance EA.sub.2; a set of discrete spacers between the first and second glass panes maintaining a distance between the two glass panes and forming an array with a pitch λ; a hermetically bonding seal, sealing the distance between the two glass panes over a perimeter thereof; an internal volume, V, defined by the two glass panes, spacers and closed by the hermetically bonding seal; where Z.sub.1>Z.sub.2 and ΔEA≤0.0033 ΔZ.sup.2/mm.sup.2−0.0468 ΔZ/mm+0.7702; where ΔEA=EA.sub.1−2EA.sub.2, and Z.sub.1≥5 mm, Z.sub.2≥3 mm, ΔZ=Z.sub.1−Z.sub.2≥1 mm, and 10 mm≤λ≤35 mm.

A glass panel unit assembly includes: a pair of glass substrates arranged to face each other; a peripheral wall; a partition; an air passage; and an evacuation port. The peripheral wall has a frame shape and is disposed between the pair of glass substrates. The partition partitions an internal space, surrounded with the pair of glass substrates and the peripheral wall, into a first space and a second space. The air passage connects the first space and the second space together. The evacuation port connects the second space to an external environment. The partition is lower in height than the peripheral wall.

A glass panel unit assembly includes: glass substrates; a peripheral wall having a frame shape and disposed between the glass substrates; a partition; an evacuation port; and a plurality of air passages. The partition partitions an internal space into an evacuation space, a ventilation space, and a coupling space. The evacuation port connects the ventilation space to an external environment. The plurality of air passages includes: a first air passage connecting the evacuation space to the coupling space; and a second air passage connecting the coupling space to the ventilation space. The second air passage includes a particular air passage having a larger dimension than any of the first air passage.

A method for forming a closed frame-shaped spacer for an insulating glass pane by applying a paste-like and subsequently hardening strand has at a beginning of the strand a ramp in which the thickness of the strand increases from zero to a nominal thickness. An end of the strand's thickness is complementary to the rising ramp on the same path, overlapping the ramp, decreasing from the target thickness to zero, the surface of the ramp forming an interface between the beginning and the end of the strand. The beginning and end of the strand are pressurized on either side by placing it between a first jaw and a second jaw. The exerting surface of the first jaw has a property enabling the material of the strand which comes into contact with the surface of the first jaw to be removed therefrom by lifting the first jaw from the strand.

A vacuum insulated glass product and the method for making the same, wherein the vacuum insulated glass comprises: a first glass substrate; a second glass substrate disposed facing the first glass substrate; a sealing structure provided between the first glass substrate and the second glass substrate and used for airtight binding of the first glass substrate and the second glass substrate to form a vacuum cavity; and a plurality of supports provided inside the vacuum cavity for bearing pressure from the first glass substrate and the second glass substrate. The sealing structure comprises: metal layers which are fixedly formed on facing surfaces of the first glass substrate and the second glass substrate, and an intermediate solder layer which is disposed between and connects the metal layers. The sealing structure has arc-shaped transition structures at the corner areas of the glass substrates.

An induction-heating welding method for vacuum insulated glass comprising upper and lower glass substrates is disclosed. Metal layers are prepared in regions to be sealed for the upper and lower glass substrates. A continuous solder is distributed on the metal layer in the lower glass substrate's region to be sealed. The upper and lower glass substrates are superposed. During welding, a high-frequency induction welding head's center moves forward along a centerline of a width of the metal layers; during induction heating of the metal layers in a corner region, a relative position between a movement route of the high-frequency induction welding head's center and the centerline of the width of the metal layers is changed, so that the movement route deviates from the centerline of the width of the metal layers, and thus reducing induction power and avoiding overheating of the metal layers in the corner region.