A flexible semiconductor device including a light-emitting element and a sensor element is provided. The semiconductor device includes a sensor device, a processor, and a communication device. The sensor device includes a first pixel and a second pixel formed over a flexible substrate. The first pixel includes a light-emitting element and a first transistor. The second pixel includes a sensor element having a photoelectric conversion function and a second transistor. Light emitted from the light-emitting element has a peak wavelength. A range of wavelength sensed by the sensor element includes the peak wavelength. A semiconductor layer of the first transistor and a semiconductor layer of the second transistor include the same element. A pixel electrode of the light-emitting element has a function of being electrically connected to the first transistor and a function of blocking diffusion light to the sensor element.

A display that includes a plurality of contiguous pixel areas. Each pixel area is divided into subpixels for displaying and a photodetector for imaging. The display can be configured into a display mode to display information using the subpixels for displaying or an imaging mode to capture image information using the photodetectors for imaging.

An imaging apparatus including a light source is provided. The imaging apparatus includes a light-emitting device and a photoelectric conversion device in a pixel, and a pixel circuit has a function of outputting third data generated by multiplying obtained first data by second data (weight). Calculating the third data externally enables more detailed information on a subject with respect to a specific wavelength to be obtained. In addition, reading out collectively a plurality of pixels to which proper weight is given enables output of difference data between pixels and the like, which allows external calculation to be omitted.

A highly convenient imaging device is provided. Alternatively, a highly reliable imaging device is provided. Alternatively, a highly convenient authentication device is provided. Alternatively, a highly reliable authentication device is provided. The imaging device includes a substrate, a pixel array, and an adhesive layer. The substrate has flexibility, the pixel array is positioned over a first surface of the substrate, and the adhesive layer is positioned on a second surface facing the first surface of the substrate. The pixel array includes a light-receiving element and a light-emitting element. The light-receiving element has a function of sensing infrared light and includes a first pixel electrode, an active layer, and a common electrode. The light-emitting element has a function of emitting infrared light and includes a second pixel electrode, a light-emitting layer, and the common electrode. The active layer is positioned over the first pixel electrode and contains a first organic compound. The light-emitting layer is positioned over the second pixel electrode and contains a second organic compound different from the first organic compound. The common electrode includes a portion overlapping with the first pixel electrode with the active layer therebetween, and a portion overlapping with the second pixel electrode with the light-emitting layer therebetween.

A pulse oximeter device is provided that includes a first light emitting element configured to emit red light, a second light emitting element configured to emit green light or near infrared (NIR) light, and a sensor element configured to detect red and green light or detect red and NIR light. The sensor element may have a substantially circular geometry, and the first light emitting element and the second light emitting element may each have a substantially arc-shaped geometry, and wherein the sensor element is positioned between the first light emitting element and the second light emitting element, or the first and second light emitting elements together may have a substantially circular geometry, and wherein the sensor element comprises one or more substantially arc-shaped portions, and wherein the first and second light emitting elements are partially surrounded, or fully surrounded, by the sensor element.

An optoelectronic device includes a substrate with a light emitter and a photodetector supported by the substrate. The light emitter and photodetector are stacked one on top of the other. At least one of the light emitter and photodetector is formed by a stack including the following order of layers: a first electrode layer, a hole transport layer, a quantum nano-structure layer (for example, a semiconductor nanoparticle layer, a quantum dot layer, a quantum rod layer or quantum well layer), an electron transport layer and a second electrode layer. An insulating layer is positioned between the light emitter and photodetector in the stack.

The present disclosure relates to a display device, a display panel and a method of manufacturing the same, and relates to display technology. The display panel of the present disclosure includes a driving backplane, a first planarization layer, a second planarization layer, light-emitting devices and photoelectric sensing devices. The first planarization layer is provided on one side of the driving backplane. The second planarization layer is provided on a surface of the first planarization layer distal to the driving backplane, and the second planarization layer is provided with sensing holes. The light-emitting devices are provided on a surface of the second planarization layer distal to the driving backplane and are located outside the sensing holes. The photoelectric sensing devices are provided on a surface of the second planarization layer distal to the driving backplane, and each of the photoelectric sensing devices is at least partially located inside the sensing hole.

The present disclosure provides a display substrate and a manufacturing method thereof, and a display apparatus. The display substrate has a fingerprint identification region. The display substrate includes a base substrate; a display unit on the base substrate and including a display thin film transistor and a light-emitting device, a second electrode of the display thin film transistor being coupled to a first electrode of the light-emitting device; and a fingerprint identification unit at a gap between adjacent display units in the fingerprint identification region and including a fingerprint identification transistor and a photosensitive device, a first electrode of the fingerprint identification transistor being coupled to a second electrode of the photosensitive device. The display substrate further includes a gate insulating layer on a side of an active layer of the display thin film transistor and an active layer of the fingerprint identification transistor distal to the base substrate.

The present disclosure provides a display substrate and a manufacturing method thereof, and a display apparatus. The display substrate has a fingerprint identification region. The display substrate includes a base substrate; a display unit on the base substrate and including a display thin film transistor and a light-emitting device, a second electrode of the display thin film transistor being coupled to a first electrode of the light-emitting device; and a fingerprint identification unit at a gap between adjacent display units in the fingerprint identification region and including a fingerprint identification transistor and a photosensitive device, a first electrode of the fingerprint identification transistor being coupled to a second electrode of the photosensitive device. The display substrate further includes a gate insulating layer on a side of an active layer of the display thin film transistor and an active layer of the fingerprint identification transistor distal to the base substrate.

Methods and devices for forming painted circuits using multiple layers of electrically conductive paint. In one aspect, a painted circuit includes a substrate (111) and one or more paint layer (106, 108, 110, 112, 114, 116, 120, 122) applied to the substrate, where the one or more paint layers each form an electrical component of the painted circuit. A given paint layer of the one or more paint layers includes a conductive paint formulation having a resistance that is defined by a concentration of conductive material that is included in the conductive paint formulation and a thickness of the given paint layer, and lower concentrations of the conductive material included in the conductive paint formulation provide a higher resistance than higher concentrations of conductive material.