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US 10,768,660 B2Granted
Light-emitting audio device, audio output device, and display device
AssigneeLG Display Co., Ltd.
InventorsKiSung Lim, DongRyul Jung
Life of this patent
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Abstract
A light-emitting audio device, an audio output device, and a display device. The light-emitting audio device includes a micro device integrated with a micro LED device and piezoelectric device. Both image display and audio output can be enabled using a single device. Audio is output using a plurality of light-emitting audio devices disposed in a plurality of subpixels, respectively. An increase in the thickness of the display device due to integrate with a audio function can be minimized. A variety of audio output functions are provided by driving the light-emitting audio devices according to areas.
Claims19
A light-emitting audio device, comprising:
- a light-emitting diode comprising a first semiconductor layer, a second semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer;
- a piezoelectric device comprising a first electrode layer, a second electrode layer, and a piezoelectric material disposed between the first electrode layer and the second electrode layer;
- an insulator disposed between the light-emitting diode and the piezoelectric device;
- a protective layer disposed on a surface of at least one of the light-emitting diode and the piezoelectric device;
- and
- a plurality of electrodes located on the protective layer to be electrically connected to the light-emitting diode or the piezoelectric device,
- wherein at least one electrode among the plurality of electrodes is located in a via-hole which passes through at least one of the active layer and the piezoelectric material.
4 more elements
An audio output device, comprising:
- a substrate;
- a plurality of light-emitting audio devices disposed on the substrate;
- and
- a first driver circuit and a second driver circuit driving the plurality of light-emitting audio devices,
- wherein each of the plurality of light-emitting audio devices comprises:
- a light-emitting diode comprising a first semiconductor layer, a second semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer;
- a piezoelectric device comprising a first electrode layer, a second electrode layer, and a piezoelectric material disposed between the first electrode layer and the second electrode layer;
- an insulator disposed between the light-emitting diode and the piezoelectric device;
- a protective layer disposed on a surface of at least one of the light-emitting diode and the piezoelectric device;
- and
- a plurality of electrodes located on the protective layer to be electrically connected to the light-emitting diode or the piezoelectric device,
- wherein at least one electrode among the plurality of electrodes is located in a via-hole which passes through at least one of the active layer and the piezoelectric material.
9 more elements
A display device, comprising:
- a panel on which a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed;
- a plurality of light-emitting audio devices disposed in the plurality of subpixels, respectively;
- and
- a first driver circuit and a second driver circuit driving the plurality of light-emitting audio devices,
- wherein each of the plurality of light-emitting audio devices comprises:
- a light-emitting diode comprising a first semiconductor layer, a second semiconductor layer, and an active layer disposed between the first semiconductor layer and the second semiconductor layer;
- a piezoelectric device comprising a first electrode layer, a second electrode layer, and a piezoelectric material disposed between the first electrode layer and the second electrode layer;
- an insulator disposed between the light-emitting diode and the piezoelectric device;
- a protective layer disposed on a surface of at least one of the light-emitting diode and the piezoelectric device;
- and
- a plurality of electrodes located on the protective layer to be electrically connected to the light-emitting diode or the piezoelectric device,
- wherein at least one electrode among the plurality of electrodes is located in a via-hole which passes through at least one of the active layer and the piezoelectric material.
9 more elements
Dependencies are inferred from the claim text.