Display manufacturing device and manufacturing method, and display

Patent metadata

Field	Value
Publication number	US-11755065-B2
Application number	US-202016742073-A
Country	US
Kind code	B2
Filing date	Jan 14, 2020
Priority date	Aug 25, 2017
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

A display manufacturing device sticks a transparent panel to a display panel, the display panel including a front surface having a periphery covered by a bezel. The display manufacturing device includes: a dispenser that makes a dam by dispensing a light curable resin to straddle the front surface of the display panel and the bezel, and be along an inner peripheral edge of the bezel to stick the transparent panel to the front surface of the display panel; and at least one light irradiation device that emits light that cures the dam. The at least one light irradiation device emits the light in a direction that forms an acute angle between the direction and the front surface of the display panel, the direction being a direction that allows the light to reach the light curable resin that has entered a gap between the front surface and the bezel.

First claim

What is claimed is:

1. A display manufacturing device for sticking a transparent panel to a display panel, the display panel including a front surface having a periphery covered by a bezel, the display manufacturing device comprising:
a dispenser that makes a dam by dispensing the light curable resin to straddle the front surface of the display panel and the bezel, and be along an inner peripheral edge of the bezel to stick the transparent panel to the front surface of the display panel, and to have a low-protrusion portion having a height lower than a height of another portion of the dam on the bezel; and
at least one light irradiation device that emits light that cures the dam,
wherein the at least one light irradiation device emits the light in a direction that forms an acute angle between the direction and the front surface of the display panel, the direction being a direction that allows the light to reach the light curable resin that has entered a gap between the front surface and the bezel.

2. The display manufacturing device according to claim 1 , wherein the at least one light irradiation device is disposed in such a manner that when the at least one light irradiation device emits light onto the front surface of the display panel, at least part of a light spot of the light on the front surface exists in a gap between the front surface of the display panel and the bezel.

3. The display manufacturing device according to claim 2 , wherein the at least one light irradiation device is disposed in such a manner that an optical axis of the at least one light irradiation device enters a gap between the front surface of the display panel and the bezel.

4. The display manufacturing device according to claim 1 , further comprising a movable head that moves relative to the display panel in such a manner that the movable head moves parallel to the front surface of the display panel, and moves along an inner peripheral edge of the bezel,
wherein the dispenser and the at least one light irradiation device are attached to the movable head.

5. The display manufacturing device according to claim 4 , wherein
an inner peripheral edge of the bezel has a rectangular shape,
the at least one light irradiation device includes two light irradiation devices,
the two light irradiation devices are attached to the movable head, and the movable head is configured to turn 90° about a turning center line that passes through a center of a resin dispensing outlet of the dispenser and is perpendicular to the front surface of the display panel, and
the two light irradiation devices are attached to the movable head in such a manner that the two light irradiation devices have a 180° rotational symmetry about the turning center line of the movable head.

6. The display manufacturing device according to claim 4 , wherein the movable head moves at an adjustable speed.

7. The display manufacturing device according to claim 4 , wherein the front surface of the display panel has a point of intersection where the front surface intersects with an optical axis of the at least one light irradiation device, and the movable head includes a light blocking plate disposed between the point of intersection and the resin dispensing outlet of the dispenser.

8. The display manufacturing device according to claim 1 , wherein
an inner peripheral edge of the bezel has a rectangular shape, and
the low-protrusion portion is made at four corners of the rectangular shape.

9. A display manufacturing method for sticking a transparent panel to a display panel, the display panel including a front surface having a periphery covered by a bezel, the display manufacturing method comprising:
making a dam by causing a dispenser to dispense a light curable resin to straddle the front surface of the display panel and the bezel, and be along an inner peripheral edge of the bezel to stick the transparent panel to the front surface of the display panel, and to have a low-protrusion portion having a height lower than a height of another portion of the dam on the bezel; and
curing the dam with light from a light irradiation device,
wherein the light irradiation device emits the light in a direction that forms an acute angle between the direction and the front surface of the display panel, the direction being a direction that allows the light to reach the light curable resin that has entered a gap between the front surface of the display panel and the bezel.

10. A display comprising:
a display panel;
a bezel disposed to cover a periphery of a front surface of the display panel;
a first adhesive that is a light curable resin, the first adhesive being disposed like a dam to straddle the front surface of the display panel and the bezel, and be along an inner peripheral edge of the bezel, and to have a low-protrusion portion having a height lower than a height of another portion of the dam on the bezel;
a second adhesive filled in the dam; and
a transparent panel stuck to the front surface of the display panel with the first and the second adhesives.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ogura Motonari
• Morita Hisato
• Komoda Daisuke

Classifications

• H10H20/01

  Manufacture or treatment · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G06F1/1609 Primary

  to support filters or lenses · CPC title

• C09J5/00

  Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers · CPC title

• C09J201/00

  Adhesives based on unspecified macromolecular compounds · CPC title