# US 12,216,825 B2 · Display device

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- Number: US 12,216,825 B2
- Document ID: US12216825B2
- Status: Granted
- Kind: B2
- Application number: 17/896,254
- Filed: 2022-08-26
- Published: 2022-12-29
- Granted: 2025-02-04
- Earliest claimed: 2018-10-02
- Assignees: Samsung Display Co., Ltd.
- Applicants: Samsung Display Co., Ltd.
- Inventors: Yi Joon Ahn; Jung Hun Noh; Jae Woo Im
- Web page: https://patentgrep.com/patent/US12216825B2

## CPC

- G06F 3/016: {Input arrangements with force or tactile feedback as computer generated output to the user}
- G06F 1/1626: {with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]}
- G06F 1/1637: {Details related to the display arrangement, including those related to the mounting of the display in the housing}
- G06F 1/1658: {related to the mounting of internal components, e.g. disc drive or any other functional module}
- G06F 1/1684: {Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675}
- G06F 3/0416: {Control or interface arrangements specially adapted for digitisers}
- H04M 1/0266: {for a display module assembly}
- H04R 1/24: Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
- H04R 3/12: for distributing signals to two or more loudspeakers {(specially adapted for hearing aids H04R25/407)}
- H04R 7/045: {using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion}
- H10N 30/20: with electrical input and mechanical output, e.g. functioning as actuators or vibrators
- G06F 1/1643: {the display being associated to a digitizer, e.g. laptops that can be used as penpads (details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615)}
- G06F 1/1688: {the I/O peripheral being integrated loudspeakers}
- G06F 3/16: Sound input; Sound output (speech processing G10L)
- H04M 1/03: Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
- H04M 2250/22: including a touch pad, a touch sensor or a touch detector
- H04R 1/028: {associated with devices performing functions other than acoustics, e.g. electric candles}
- H04R 9/063: {using a plurality of acoustic drivers (H04R1/24 and H04R1/403 take precedence)}
- H04R 17/00: Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00})
- H04R 17/005: {using a piezoelectric polymer}
- H04R 2307/025: Diaphragms comprising polymeric materials
- H04R 2400/03: Transducers capable of generating both sound as well as tactile vibration, e.g. as used in cellular phones
- H04R 2430/03: Synergistic effects of band splitting and sub-band processing
- H04R 2499/11: Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
- H04R 2499/15: Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)
- H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR

## Abstract

A display device includes a display panel displaying an image, a lower frame disposed under the display panel, a first vibration element attached to a lower surface of the display panel and which generates a first vibration based on a first vibration signal, a second vibration element disposed under the lower frame and which generates a second vibration based on a second vibration signal, and a first vibration driver circuit which provides the first vibration signal to the first vibration element, where a phase of the second vibration signal is opposite to a phase of the first vibration signal.

## Claims

### Claim 1

A display device comprising:
a display panel which displays an image;
a lower frame disposed under the display panel;
a first vibration element attached to a lower surface of the display panel, wherein the first vibration element generates a first vibration based on a first vibration signal;
a second vibration element which generates a second vibration based on a second vibration signal; and
an integrated vibration driver circuit which provides the first vibration signal to the first vibration element, and provides the second vibration signal to the second vibration element,
wherein a phase of the second vibration signal is opposite to a phase of the first vibration signal.

### Claim 2 (depends on 1)

The display device of claim 1, wherein
a period of the second vibration is the same as a period of the first vibration.

### Claim 3 (depends on 2)

The display device of claim 2, further comprising:
a main circuit board disposed under the lower frame;
wherein the second vibration element includes a linear resonance actuator, and
wherein the integrated vibration driver circuit is disposed on the main circuit board to be adjacent to the second vibration element.

### Claim 4 (depends on 2)

The display device of claim 2, wherein
each of the first vibration element and the second vibration element includes a vibration material layer, and
the vibration material layer includes at least one of a piezoelectric body, a piezoelectric film and an electroactive polymer film.

### Claim 5 (depends on 4)

The display device of claim 4, further comprising:
a vibration circuit board disposed between the display panel and the main circuit board and electrically connected to the first vibration element and the second vibration element,
wherein the integrated vibration driver circuit is disposed on the vibration circuit board.

### Claim 6 (depends on 5)

The display device of claim 5, wherein the first vibration element and the second vibration element are disposed symmetrically to each other with respect to a center of the display panel.