Back to results
US 10,852,866 B2Granted
Display device
AssigneeSamsung Display Co., Ltd.
InventorsJinwoo Park, Hyunduck Cho, Wonkyu Kwak
Life of this patent
Estimating the term…
Abstract
A display device includes a display panel and an infrared sensing module. The display panel includes an active region in which a pixel that emits light based on a data signal is disposed. The infrared sensing module transmits a first infrared light that passes through the active region and receives a second infrared light that passes through the active region to recognize an object. The wavelength of the first infrared light may have a wavelength greater than a predetermined value so that a luminance of light emitted by the pixel is not affected by operation of the infrared sensing module.
Claims19
A display device comprising:
- a display panel having a front surface and a rear surface, the display panel including an active region in which a pixel that emits light based on a data signal is disposed;
- and
- an infrared sensing module disposed outside of the display panel that faces the rear surface of the display panel and that is configured to emit infrared light including at least a first infrared light that passes in a first direction away from the front surface of the display panel and through the active region, and
- the infrared sensing module is configured to receive a second infrared light that passes in a second direction toward the front surface of the display panel and through the active region by which the infrared sensing module recognizes an object external to the display device,
- wherein the infrared sensing module emits the first infrared light through a portion of the active region of the display panel having a lower pixel density than a remainder of the active region.
2 more elements
A display device comprising:
- a display panel having a front surface and a rear surface, the display panel including an active region in which a pixel that emits light based on a data signal is disposed;
- and
- an infrared sensing module that faces the rear surface of the display panel and that is configured to emit infrared light including at least a first infrared light that passes in a first direction away from the front surface of the display panel and through the active region, and
- the infrared sensing module is configured to receive a second infrared light that passes in a second direction toward the front surface of the display panel and through the active region by which the infrared sensing module recognizes an object external to the display device,
- wherein the pixel includes at least one transistor comprising silicon, and
- wherein the first infrared light has a first wavelength that is outside of a wavelength band of light that is absorbed by the silicon.
3 more elements
A display device comprising:
- a display panel including an active region in which a pixel is disposed, the pixel emits light based on a data signal;
- and
- a single, integrated infrared sensing module that faces a rear surface of the display panel and that is configured to emit a first infrared light that passes through the active region to exit the display device, and to receive a second infrared light that enters the display device and passes through the active region to recognize an object,
- wherein the pixel includes at least one transistor that operates in response to receiving the data signal, and a current that flows through the at least one transistor when the at least one transistor is turned off is changed according to a change in a wavelength of light that is applied to the active region, and
- wherein the first infrared light has a first wavelength having a change rate of the current that is less than or equal to a reference value.
2 more elements
A display device comprising:
- a display panel including an active region in which a pixel is disposed, the pixel emits light based on a data signal;
- and
- an infrared sensing module that faces a rear surface of the display panel and that is configured to emit a first infrared light that passes through the active region to exit the display device, and to receive a second infrared light that enters the display device and passes through the active region to recognize an object,
- wherein the pixel includes at least one transistor that operates in response to receiving the data signal, and a current that flows through the at least one transistor when the at least one transistor is turned off is changed according to a change in a wavelength of light that is applied to the active region,
- wherein the first infrared light has a first wavelength having a change rate of the current that is less than or equal to a reference value,
- wherein the at least one transistor is comprised of silicon, and
- wherein the first wavelength of the first infrared light is outside of a band of wavelengths of light that is absorbed by the silicon.
4 more elements
Dependencies are inferred from the claim text.