Method for manufacturing glass window, method for manufacturing display device, display device and electronic device having the same
A method for manufacturing a glass window. The glass window includes a folding area folded with respect to a folding axis and a non-folding area adjacent to the folding area. The method for manufacturing the glass window includes forming a pattern glass including a pattern part and a non-pattern part adjacent to the pattern part, the pattern part including first groove patterns in a first surface and corresponding to the folding area and a non-pattern part adjacent to the pattern part and corresponding to the non-folding area, and forming a filling layer on the pattern part. The forming of the filling layer includes initial filling of a filling resin into the groove patterns, and additional filling of the filling resin into the outermost groove patterns that are farthest from the folding axis among the groove patterns.
1 . A method for manufacturing a glass window comprising a folding area folded with respect to a folding axis and a non-folding area adjacent to the folding area, the method comprising:
forming a pattern glass comprising a pattern part and a non-pattern part adjacent to the pattern part, the pattern part including first groove patterns in a first surface and corresponding to the folding area, the non-pattern part corresponding to the non-folding area; and
forming a first filling layer on the pattern part,
wherein the forming of the first filling layer comprises:
an initial filling of a filling resin into the first groove patterns, the initial filling comprising providing the filling resin into a first outermost groove pattern and a second outermost groove pattern that are farthest from the folding axis among the first groove patterns, and into at least one intermediate groove pattern, from among the first groove patterns, that is between the first outermost groove pattern and the second outermost groove pattern; and
an additional filling of the filling resin into the first outermost groove pattern and the second outermost groove pattern after the initial filling,
wherein the initial filling is performed such that an uppermost level of the filling resin in the at least one intermediate groove pattern becomes higher than an uppermost level of the filling resin in the first outermost groove pattern or the second outermost groove pattern, and
wherein the additional filling is performed such that a height difference between the uppermost level of the filling resin in the at least one intermediate groove pattern and the uppermost level of the filling resin in the first outermost groove pattern or the second outermost groove pattern decreases in comparison to the initial filling.
2 . The method of claim 1 , wherein
each of the first groove patterns has a strip shape extending in a first direction parallel to the folding axis, and
the first groove patterns are disposed in a second direction perpendicular to the first direction.
3 . The method of claim 2 , wherein the first outermost groove pattern and the second outermost groove pattern are disposed at opposite sides with respect to the folding axis in the second direction.
4 . The method of claim 1 , wherein
the initial filling of the filling resin is in an inkjet manner, and
the additional filling of the filling resin is in an inkjet manner.
5 . The method of claim 4 , wherein the initial filling of the filling resin into the first groove patterns comprises a plurality of unit filling processes, the plurality of unit filling processes comprising:
a first unit filling process of providing the filling resin into the first groove patterns a first time; and
a second unit filling process of providing more of the filling resin into the first groove patterns a second time after the first time.
6 . The method of claim 5 , wherein a discharge amount per groove pattern per each one of the plurality of unit filling processes is the same as a discharge amount per groove pattern per the additional filling of the filling resin into the first outermost groove pattern and the second outermost groove pattern.
7 . The method of claim 1 , wherein the forming of the first filling layer further comprises: a second additional filling of the filling resin into opposite ends of each of the first groove patterns without further filling an intermediate portion of each of the first groove patterns that is between the opposite ends.
8 . The method of claim 7 , wherein
the initial filling of the filling resin is in an inkjet manner,
the additional filling of the filling resin is in an inkjet manner, and
the second additional filling of the filling resin is in an inkjet manner.
9 . The method of claim 8 , wherein the initial filling of the filling resin into the first groove patterns comprises a plurality of unit filling processes, the plurality of unit filling processes comprising:
a first unit filling process of providing the filling resin into the first groove patterns a first time; and
a second unit filling process of providing more of the filling resin into the first groove patterns a second time after the first time.
10 . The method of claim 9 , wherein a discharge amount per groove pattern per each one of the plurality of unit filling processes is the same as a discharge amount per groove pattern per the additional filling of the filling resin.
11 . The method of claim 1 , wherein the forming of the pattern glass comprises:
forming the first groove patterns, each of which is in a shape that is recessed from a surface of a base glass.
12 . The method of claim 11 , wherein the forming of the first groove patterns comprises:
irradiating laser onto the surface of the base glass to form laser patterns; and
etching the base glass, on which the laser patterns are formed, to form the first groove patterns.
13 . The method of claim 11 , wherein a height difference between the surface and an uppermost level of the first filling layer is about 5 μm or less.
14 . The method of claim 1 , further comprising attaching a window upper film to the pattern glass and the first filling layer.
15 . The method of claim 14 , wherein the window upper film comprises:
a protective layer;
a window adhesive layer disposed between the protective layer and the pattern glass; and
a window light blocking layer disposed to surround the window adhesive layer and disposed along an edge of the protective layer.
16 . The method of claim 1 , further comprising forming a window adhesive layer on the pattern glass and the first filling layer,
wherein the forming of the window adhesive layer comprises:
an initial injecting of an adhesive resin onto the pattern glass and the first filling layer to form a preliminary adhesive layer; and
an additional injecting of the adhesive resin onto an edge portion of the preliminary adhesive layer to form the window adhesive layer.
17 . The method of claim 16 , wherein the adhesive resin has adhesion greater than or equal to that of the filling resin.
18 . The method of claim 16 , wherein the filling resin has a modulus less than or equal to a modulus of the adhesive resin.
19 . The method of claim 18 , further comprising:
attaching a window upper film to the window adhesive layer,
wherein the window upper film comprises:
a protective layer; and
a window light blocking layer disposed along an edge of the protective layer.
20 . The method of claim 1 , wherein
the pattern part further comprises second groove patterns in a second surface facing away from the first surface and corresponding to the folding area, and
the method for manufacturing the glass window further comprises:
forming a second filling layer on the pattern part,
wherein the forming of the second filling layer comprises:
an initial filling of the filling resin into the second groove patterns, the initial filling comprising providing the filling resin into a third outermost groove pattern and a fourth outermost groove pattern that are farthest from the folding axis among the second groove patterns, and into at least one intermediate groove pattern, from among the second groove patterns, that is between the third outermost groove pattern and the fourth outermost groove pattern; and
an additional filling of the filling resin into the third outermost groove pattern and the fourth outermost groove pattern after the initial filling of the filling resin into the second groove patterns,
wherein the initial filling of the second groove patterns is performed such that an uppermost level of the filling resin in the at least one intermediate groove pattern of the second groove patterns becomes higher than an uppermost level of the filling resin in the third outermost groove pattern and the fourth outermost groove pattern, and
wherein the additional filling of the second groove patterns is performed such that a height difference between the uppermost level of the filling resin in the at least one intermediate groove pattern of the second groove patterns and the uppermost level of the filling resin in the third outermost groove pattern and the fourth outermost groove pattern decreases in comparison to the initial filling of the second groove patterns.
21 . The method of claim 1 , wherein the initial filing comprises:
providing, by at least one nozzle, the filling resin into the first outermost groove pattern;
moving, after the providing the filling resin into the first outermost groove pattern, the at least one nozzle to the at least one intermediate groove pattern;
providing, by the at least one nozzle, the filling resin into the at least one intermediate groove pattern;
moving, after the providing the filling resin into the at least one intermediate groove pattern, the at least one nozzle to the second outermost groove pattern; and
providing, by the at least one nozzle, the filling resin into the second outermost groove pattern.
22 . The method of claim 21 , wherein the additional filing comprises:
providing, by the at least one nozzle, the filling resin into the first outermost groove pattern;
moving, after the providing the filling resin into the first outermost groove pattern, the at least one nozzle from the first outermost groove pattern to the second outermost groove pattern without filling the resin into the at least one intermediate groove pattern; and
providing, by the at least one nozzle, the filling resin into the second outermost groove pattern.
23 . The method of claim 22 , wherein the forming of the first filling layer further comprises: a second additional filling of the filling resin into opposite ends of at least one of the first groove patterns without further filling the resin into an intermediate portion of the at least one of the first groove patterns that is between the opposite ends.
24 . A method for manufacturing a display device comprising a folding area folded with respect to a folding axis and a non-folding area adjacent to the folding area, the method comprising:
manufacturing a display panel that displays an image;
manufacturing a glass window; and
physically connecting the display panel to the glass window,
wherein the manufacturing of the glass window comprises:
forming a pattern part comprising groove patterns corresponding to the folding area and a non-pattern part adjacent to the pattern part and corresponding to the non-folding area; and
forming a filling layer on the pattern part,
wherein the forming of the filling layer comprises:
an initial filling of a filling resin into the groove patterns, the initial filling comprising providing the filling resin into a first outermost groove pattern and a second outermost groove pattern that are farthest from the folding axis among the groove patterns, and into at least one intermediate groove pattern, from among the groove patterns, that is between the first outermost groove pattern and the second outermost groove pattern; and
an additional filling of the filling resin into the first outermost groove pattern and the second outermost groove pattern after the initial filling,
wherein the initial filling is performed such that an uppermost level of the filling resin in the at least one intermediate groove pattern becomes higher than an uppermost level of the filling resin in the first outermost groove pattern and the second outermost groove pattern, and
wherein the additional filling is performed such that a height difference between the uppermost level of the filling resin in the at least one intermediate groove pattern and the uppermost level of the filling resin in the first outermost groove pattern and the second outermost groove pattern decreases in comparison to the initial filling.