# US 2021/0243908 A1 · Infolding-type hinge structure having flexible display panel installed therein

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- Number: US 2021/0243908 A1
- Document ID: US20210243908A1
- Status: Published application
- Kind: A1
- Application number: 17/049,703
- Filed: 2019-04-25
- Published: 2021-08-05
- Earliest claimed: 2018-04-25
- Assignees: Auflex Co., Ltd.
- Applicants: Auflex Co., Ltd.
- Inventors: Hyun Min PARK; Seoung Jun LEE
- Web page: https://patentgrep.com/patent/US20210243908A1

## CPC

- G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable}
- G06F 1/1616: {with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position}
- G06F 1/1681: {Details related solely to hinges (hinge details related to the transmission of signals or power are classified in G06F1/1683)}
- H05K 5/0226: {Hinges}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS

## Abstract

Provided is an in-folding type hinge structure having a flexible display panel installed therein in a mobile communication terminal in which a flexible display panel is provided in a pair of panel portions which are foldably connected to each other, in which a stable folding operation can be performed while the panel portions are being folded or unfolded and the panel portions do not rotate over 180 degrees when the panel portions are fully unfolded, whereby damage of the flexible display panel provided on the surfaces of the panel portions can be prevented.

## Claims

### Claim 1

An in-folding type hinge structure having a flexible display panel installed therein, comprising:
a hinge portion in which, in a state in which an inside support (22), a rotation support (32) of which an inner surface comes into contact with the inside support (22), and an outside support (42) that comes into contact with an outer surface of the rotation support (32) are coupled to each other, a guide rod (46) is inserted into a groove (44) of the outside support, passes through a guide groove (34) extending longitudinally in the rotation support (32), and is inserted into a groove (23) of the inside support (22),
wherein two inside supports (22), two rotation supports (32), and two outside supports (42) are installed in a connecting portion (60) which is provided in a reception portion (54) between a pair of bodies (50) and in which gears of the two rotation supports (32) engage with each other such that the inside supports (22), the rotation supports (32), and the outside supports (42) are able to rotate simultaneously in opposite directions using two shafts (56) in a state in which the inside supports (22), the rotation supports (32), and the outside supports (42) are coupled to each other by the guide rod (46),
wherein dual rotation including rotation of the two rotation supports (32) by the same angle in opposite directions and rotation of the inside supports (22) and the outside supports (42) along the guide grooves of the rotation supports (32) with the rotation of the rotation supports (32) is performed in the connecting portion (60) of the hinge portion, and
wherein a guide groove (24) is formed on both side surfaces of each inside support (22), a guide protrusion (52) formed to protrude from an inner side surface of each body (50) is inserted into the corresponding guide groove (24) to limit a range in which the inside support (22) rotates, and the inside supports (22) rotate when the pair of rotation supports (32) of which gears (36) engage with each other rotates.

### Claim 2 (depends on 1)

The in-folding type hinge structure having a flexible display panel installed therein according to claim 1, wherein the guide rod (46) has a large length, the groove (23) of each inside support (22) is formed to penetrate the inside support (22), the guide rod (46) is formed to pass through the groove (44) of the corresponding outside support (42), the guide groove (34), and the groove of the inside support (22), and a part of the guide rod (46) having passed therethrough is directly coupled to a panel portion (10).

### Claim 3 (depends on 1)

The in-folding type hinge structure having a flexible display panel installed therein according to claim 1, further comprising a semiautomatic drive portion that is provided along with the hinge portion,
wherein the semiautomatic drive portion includes a body portion (80) that has a groove formed therein, a spring (84) that is inserted into the body portion (80), a translation cam (82) that is inserted into the body portion (80) into which the spring (84) is inserted and moves translationally, a rotation cam (87) that rotates in a state in which the rotation cam engages with the translation cam (82) such that the translation cam (82) moves translationally, a connecting shaft (94) that passes through and connects the rotation cam (87), the translation cam (82), and the spring (84) such that the rotation cam (87), the translation cam (82), and the spring (84) are not detached, and a connecting portion (90) that is provided with a gear (92) which is coupled to the body portion (80).