# US 12,216,095 B2 · Drop test device and drop test method using the same

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- Number: US 12,216,095 B2
- Document ID: US12216095B2
- Status: Granted
- Kind: B2
- Application number: 17/541,654
- Filed: 2021-12-03
- Published: 2022-10-06
- Granted: 2025-02-04
- Earliest claimed: 2021-04-05
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Gabtae Kim
- Web page: https://patentgrep.com/patent/US12216095B2

## CPC

- G01M 99/007: {by applying a load, e.g. for resistance or wear testing (G01M99/001 takes precedence; testing the elasticity of structures G01M5/00)}
- G01N 3/303: generated only by free-falling weight
- G01N 2203/001: Impulsive
- G01N 2203/006: Crack, flaws, fracture or rupture
- G01N 2203/026: Specifications of the specimen
- G01N 2203/04: Chucks, fixtures, jaws, holders or anvils
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)

## Abstract

A drop test device includes a clamp that grips a falling body and that drops the falling body by releasing, by a predetermined operation, a gripping force applied to the falling body and an impact plate having an impact surface with which the falling body collides. The falling body includes a display module that operates in a first mode and a second mode and a jig to which the display module is coupled. The jig includes a first jig to which the display module in the first mode is coupled and a second jig to which the display module in the second mode is coupled.

## Claims

### Claim 1

A drop test device comprising:
a falling body including:
a display module which operates in a first mode and a second mode; and
a jig to which the display module is coupled, the jig including:
a first jig to which the display module in the first mode is coupled; and
a second jig to which the display module in the second mode is coupled;
a clamp which grips the falling body and drops the falling body by releasing, by a predetermined operation, a gripping force applied to the falling body; and
an impact plate including an impact surface with which the falling body collides,
wherein a first size of a display area of the display module in the first mode is smaller than a second size of the display area of the display module in the second mode in a plan view,
wherein each of the first jig and the second jig has a plate shape parallel to a plane defined by a first direction and a second direction crossing the first direction,
wherein the second jig has a first width greater than a first width of the first jig in the second direction, and has a second width equal to a second width of the first jig in the first direction,
wherein the falling body further includes a cover coupled to a lower portion of the display module and a lower portion of one of the first jig and the second jig,
wherein each of the first jig and the second jig includes an upper surface on which the display module is disposed and a lower surface which faces the upper surface,
wherein the cover covers at least part of the lower surface,
wherein each of the first jig and the second jig further includes a side surface which connects the upper surface and the lower surface,
wherein the side surface includes a long side surface extending in the first direction and a short side surface extending in the second direction,
wherein the cover covers at least part of the long side surface of the one of the first jig and the second jig,
wherein the long side surface includes a first long side surface and a second long side surface which faces the first long side surface, and
wherein the cover includes a first cover which covers the first long side surface of the one of the first jig and the second jig and a second cover which covers the second long side surface of the one of the first jig and the second jig.

### Claim 2 (depends on 1)

The drop test device of claim 1, wherein an area by which the first cover and the second cover coupled to the second jig overlap each other in the plan view is smaller than an area by which the first cover and the second cover coupled to the first jig overlap each other in the plan view.

### Claim 3 (depends on 1)

The drop test device of claim 1, wherein the display module includes a first display portion and a second display portion adjacent to the first display portion,
wherein in the first mode, the first display portion defines the display area of the display module, and
wherein in the second mode, the first display portion and the second display portion define the display area.

### Claim 4 (depends on 3)

The drop test device of claim 3, wherein the display module further includes a rolling portion adjacent to the second display portion,
wherein in the first mode, the rolling portion is disposed under the first jig, and
wherein in the second mode, the rolling portion is disposed on the outer side surface of the second jig.

### Claim 5 (depends on 4)

The drop test device of claim 4, wherein the display module further includes an adhesive portion adjacent to the rolling portion, the adhesive portion being attached to the lower surface of each of the first jig and the second jig.

### Claim 6 (depends on 1)

The drop test device of claim 1, further comprising:
a support to which the clamp is connected, the support having a predetermined height along a direction in which the falling body drops.

### Claim 7 (depends on 1)

The drop test device of claim 1, wherein the impact plate includes granite or metal.