Protective film for a display device, method of manufacturing the display device having the same, and manufacturing apparatus for the protective film

Patent metadata

Field	Value
Publication number	US-11951673-B2
Application number	US-202016854845-A
Country	US
Kind code	B2
Filing date	Apr 21, 2020
Priority date	Apr 24, 2019
Publication date	Apr 9, 2024
Grant date	Apr 9, 2024

Abstract

An apparatus for manufacturing a bending panel of a display includes a lower mold having a first member on which a target panel is placed, an upper mold disposed adjacent the lower mold and including a second member including a first surface to press a portion of the target panel and a second surface having a first slope with respect to the first surface, and side molds disposed at opposite sides of the lower mold and each having a third member with a third surface complementary to the second surface of the second member. The first slope is smaller than about 90 degrees.

First claim

What is claimed is:

1. An apparatus for manufacturing a bending panel of a display device, the apparatus comprising:
a lower mold having a first member on which a target panel is placed;
an upper mold disposed adjacent the lower mold and comprising a second pressing member having a first surface to press a portion of the target panel and a second surface having a first slope with respect to the first surface; and
side molds disposed at opposite sides of the lower mold and each having a third member having an upper surface supporting an outer portion of the target panel and a side surface to press the target panel, the side surface having a second slope with respect to the upper surface;
wherein each of the first slope and second slope is smaller than 90 degrees, and the second slope is the same as the first slope such that the second and third surfaces are engageable together to press the target panel.

2. The apparatus of claim 1 , wherein the first member comprises a stage having a receiving portion parallel to a plane defined by a first direction and a second direction intersecting the first direction, and
the side molds comprise:
a pair of first side molds spaced apart from each other in the first direction, and disposed at the opposite sides of the lower mold to press the target panel in the first direction; and
a pair of second side molds spaced apart from each other in the second direction, and disposed at the both sides of the lower mold to press the target panel in the second direction.

3. The apparatus of claim 2 , wherein the upper mold is spaced apart from the lower mold in a third direction intersecting the first direction and the second direction, and the upper mold is configured to press the target panel in the third direction.

4. The apparatus of claim 3 , wherein the second pressing member comprises an upper pressing member having a cross sectional shape with an area in a plan view that increases as the distance in the third direction from the lower mold decreases.

5. The apparatus of claim 2 , wherein the first surface extends in the first direction, and the second pressing member further comprises:
a second surface extending in the second direction; and
a third surface disposed between the first surface and the second surface and having a rounded shape.

6. The apparatus of claim 5 , wherein the lower mold further comprises an outer-bending forming portion configured to overlap with the third surface in the plane defined by the first direction and the second direction, and the outer-bending forming portion has a shape complementary to the rounded shape of the third surface.

7. The apparatus of claim 1 , wherein the upper mold further comprises a first portion to move the second member up and down, and the side molds each further comprise a second portion to move third member left and right.

8. The apparatus of claim 1 , wherein the lower mold further comprises one or more elastic members disposed under the first member, the one or more elastic members being compressed when the second pressing member presses against the target panel.

9. The apparatus of claim 1 , wherein the upper mold further comprises:
an upper plate supporting the second member; and
an upper heater connected to the upper plate to apply a heat to the upper plate.

10. The apparatus of claim 1 , wherein the side molds further comprise:
a side plate supporting the third member; and
a side heater connected to the side plate and to apply heat to the side plate.

11. An apparatus for manufacturing a bending panel, the apparatus comprising:
a first mold including a first member having a first surface parallel to a plane defined by a first direction and a second direction intersecting the first direction and on which a target panel is placed;
a second mold spaced apart from the first mold in a third direction intersecting each of the first and second directions and including a second member having a second surface parallel to the first surface and a third surface having a first slope with respect to the second surface that is less than 90 degrees; and
a third mold spaced apart from the first mold in the first direction and the second direction and comprising a third member having a fourth surface having a second slope similar to the first slope wherein the third and fourth surfaces are engageable together to press the target panel.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Wonju
• Ryu Dohyung
• Jung Wu Hyeon
• Hwang Daehyun

Classifications

• B29C53/04 Primary

  of plates or sheets {(B29C63/04 takes precedence; bending or folding paper B31F1/0003; folding films B65H45/00)} · CPC title

• G02F1/1303 Primary

  Apparatus specially adapted to the manufacture of LCDs · CPC title

• B29C53/80

  Component parts, details or accessories; Auxiliary operations · CPC title

• H05K5/0017

  with operator interface units · CPC title

• B29L2031/3475

  Displays, monitors, TV-sets, computer screens · CPC title