A transparent display panel with a light-transmitting substrate, a plurality of top-emitting micro light emitting diodes, a plurality of bottom-emitting micro light emitting diodes, and a light shielding layer. The light transmissive substrate has a surface. These top-emitting micro light emitting diodes and these bottom-emitting micro light emitting diodes are disposed on the surface of the light transmissive substrate. The bottom-emitting micro light emitting diodes has an epitaxial structure and a light shielding member, the epitaxial structure has a pair of upper and lower surfaces on the opposite sides, the lower surface faces toward the light transmissive substrate, and the light shielding member is disposed on the upper surface to shield the light emitted by the bottom-emitting micro light emitting diodes towards the upper surface.

A light source package structure is provided. The light source package structure includes a substrate, an upper electrode layer, a light emitting unit, a photodiode, a surrounding wall, a light permeable element, and a coating layer. The substrate includes a first surface and a second surface that is opposite to the first surface. The upper electrode layer is disposed on the first surface of the substrate. The light emitting unit and the photodiode both are disposed on the upper electrode layer. The surrounding wall is disposed on the first surface and is arranged to surround the light emitting unit and the photodiode. The light permeable element is disposed on the surrounding wall. The coating layer is disposed inside of the surrounding wall and is coated on a part of the first surface and a part of the upper electrode layer.

The invention concerns a hybrid multispectral device comprising a substrate having a first surface and a second surface, at least one first functional element having a first functional layer operable to detect or emit light of a first wavelength range, and at least one second functional element having a second functional layer operable to detect or emit light of a second wavelength range different from the first wavelength range. The first functional element is arranged on the first surface of the substrate, while the second functional element is arranged on the second surface of the substrate. The first functional element is arranged in a first lateral region of the multispectral device, and the second functional element is arranged in a second lateral region of the multispectral device. The first lateral region and the second lateral region are arranged laterally offset from each other such that the light of the second wavelength region reaches the second functional element or the light of the second wavelength region emitted from the second functional element exits the multispectral device on the first surface of the substrate without having passed through the first functional layer.

An energy harvesting electro-optic display is disclosed comprising a photovoltaic cell that converts part of the incident light to electric current or voltage, wherein the electric current or voltage is used for the operation of the electro-optic display upon the conversion or stored in a storage component to be used for the operation of the display

An optocoupler includes a GaN-based Light Emitting Diode (LED) and a GaN-based photo-detector, where at least one of the LED and photo-detector is a flip chip. In some embodiments, the photo-detector comprises a GaN-based LED configured to operate as a photo-detector.

An optocoupler includes a light output chip and a light-sensing chip. A light-receiving surface of the light-sensing chip is disposed to face a light output surface of the light output chip. The light-sensing chip and the light output chip are a blue light-emitting diode and a green light-emitting diode, respectively. Accordingly, the optocoupler has a stable output performance at a working temperature ranging from −55° C. to 150° C. and a high response frequency.

A photo-detecting device includes a substrate, a first semiconductor layer, a light-absorbing layer, a second semiconductor layer, a semiconductor contact layer, an insulating layer, and an electrode structure. The second semiconductor layer includes a first region and a second region. The semiconductor contact layer is on the first region. The insulating layer covers the semiconductor contact layer, the first region, and the second region. The electrode structure covers the semiconductor contact layer, the insulating layer, the first region, and the second region.

An electronic device includes a semiconductor nanoparticle, and a method of manufacturing the semiconductor nanoparticle is additionally provided. The semiconductor nanoparticle includes: a core including a first element; and a shell covering at least a portion of a surface of the core and including a second element and a third element, wherein the first element, the second element, and the third element are different from each other, and the first element and the second element are chemically bonded to each other on the at least a portion of the surface of the core.

The invention provides a photoelectric energy conversion device applied to a power conversion circuit to replace a magnetic component which is widely used in a power conversion circuit. The photoelectric energy conversion device includes a shell, at least one light generator, and at least one photovoltaic generator, wherein the at least one light generator and the at least one photovoltaic generator are packaged in the shell. The at least one photovoltaic generator receives light generated in the shell by the at least one light generator and generates electric energy based on the light, and the at least one photovoltaic generator serves as a power supply source for a back-end circuit of the photoelectric energy conversion device.

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.