Abstract: The display substrate comprises: a display area and a peripheral area located on the periphery of the display area, and a blocking dam and at least one blocking column are provided in the peripheral area. The display substrate comprises a base substrate, and a light-emitting structure layer and an encapsulation structure layer provided above the base substrate, the encapsulation structure layer is located on the side of the light-emitting structure layer away from the base substrate, the light-emitting structure layer comprises a cathode, and the encapsulation structure layer comprises an organic encapsulation layer. The at least one blocking column is located between the cathode and the blocking dam, and the orthographic projection of the at least one blocking column on the base substrate is located within the range of the orthographic projection of the organic encapsulation layer on the base substrate.

Abstract: A touch display panel includes: a base substrate, including a display area and a peripheral area on at least one side of the display area; pixel units in the display area, including a pixel driving circuit and a light-emitting element electrically connected to each other; touch electrodes in the display area; a touch wire electrically connected to at least one touch electrode, at least part of which extends to the peripheral area; a touch lead in the peripheral area, where the touch lead and the touch wire are in different conductive layers; and a contact groove in the peripheral area, where the touch wire and the touch lead are in contact in the contact groove, where the touch wire has a first touch wire portion in the contact groove, and the first touch wire portion extends obliquely with respect to an upper surface of the base substrate.

Abstract: According to the present disclosure, there is provided a device (2) and a method for measuring a wavelength for a laser device. The device (2) for measuring a wavelength for a laser device includes: a first optical path assembly and a second optical path assembly. The first optical path assembly and the second optical path assembly constitute a laser wavelength measurement optical path. The second optical path assembly includes: an FP etalon assembly (11) and an optical classifier (13). The homogenized laser beam passes through the FP etalon assembly (11) to generate an interference fringe. The optical classifier (13) is arranged after the FP etalon assembly (11) in the laser wavelength measurement optical path, and configured to deflect the laser beam passing through the FP etalon assembly (11).

Abstract: A display substrate and a display device. The display substrate includes a base, an insulating layer, a crack barrier structure, and a signal line. The crack barrier structure is located in a peripheral area, and at least a part of an orthographic projection of the crack barrier structure onto the base extends in an extension direction of a boundary of a display area. The crack barrier structure includes: a groove structure and a blocking portion, the groove structure is in the insulating layer, and a part of the blocking portion is located in the groove structure. The signal line is located at the peripheral area, and includes a top surface facing away from the base, and a side surface located between the top surface and the base, and at least a part of the side surface away from the display area is between the blocking portion and the groove structure.

Abstract: The present invention relates to the field of quantum communication, especially a quantum key distribution device that can be configured with multiple protocols. It uses the simplified Faraday-Michelson interference ring in combination with the intensity modulator to perform timestamp encoding in a chopping manner. The phase modulation is completed with a Sagnac ring device composed of a single-polarization phase modulator, a polarization beam splitter and a Faraday rotator, so as to achieve the purpose of composite encoding and decoding, thus realizing a quantum key distribution device which can be configured with multiple protocols and multiple decoy state schemes. This device can be compatible with multiple protocols including BB84 protocol, the reference frame-independent protocol, the six-state protocol and SARG protocol and is characterized with polarization-independent phase modulation and low system complexity.

Abstract: The present invention relates to the field of quantum communication, especially a quantum key distribution device that can be configured with multiple protocols. It uses the simplified Faraday-Michelson interference ring in combination with the intensity modulator to perform timestamp encoding in a chopping manner. The phase modulation is completed with a Sagnac ring device composed of a single-polarization phase modulator, a polarization beam splitter and a Faraday rotator, so as to achieve the purpose of composite encoding and decoding, thus realizing a quantum key distribution device which can be configured with multiple protocols and multiple decoy state schemes. This device can be compatible with multiple protocols including BB84 protocol, the reference frame-independent protocol, the six-state protocol and SARG protocol and is characterized with polarization-independent phase modulation and low system complexity.

Abstract: A lighting device (100, 300) comprising a housing (101, 301) comprising a polymer material, the housing including an elongated hollow neck portion (102) and a collar portion (104) arranged at an end of the neck portion. The collar portion includes an essentially annular surface (114, 414) surrounding the end of the neck portion peripherally. The collar portion has a metalized surface. The surface is structured into a plurality of electrically conductive pads (118, 318, 418) and the pads are electrically isolated from each other. A plurality of light emitting elements (120, 320, 420) are arranged on the collar portion of the housing. Each of the light emitting elements has a first terminal (128) electrically connected to a first electrically conductive pad (118a, 418a) and a second terminal (124) electrically connected to a second electrically conductive pad (118b, 418b). The collar portion is directly in contact with the surroundings, promoting an improved heat transfer from the light emitting elements.

Abstract: Disclosed is a lighting device (10) comprising a heat sink (30) having an annular portion (31) including an annular surface portion (33) delimiting a central aperture (37), said annular surface portion (33) carrying a plurality of SSL elements (50); and a bulbous member (20) cooperating with the heat sink (30), said bulbous member (20) having a first surface portion (21) opposite said SSL elements (50) and a second surface portion (22) extending from said first surface portion (21) through said central aperture (37); wherein the bulbous member (20) is used as a light guide member for light emitted by the plurality of SSL elements (50). A luminaire including such a lighting device (10) is also disclosed.

Abstract: A lighting device or a lamp bulb (100, 200) comprises at least one light source (101) and a driver assembly (108), said driver assembly comprising driver electronics; wherein during operation of the light source, a distance between an optical axis (120) of the lighting device and a heat flow of the lighting device is less than a distance between the optical axis (120) and a component of the driver electronics having the highest temperature sensitivity.

Abstract: A lighting device (100, 300) comprising a housing (101, 301) comprising a polymer material, the housing including an elongated hollow neck portion (102) and a collar portion (104) arranged at an end of the neck portion. The collar portion includes an essentially annular surface (114, 414) surrounding the end of the neck portion peripherally. The collar portion has a metalized surface. The surface is structured into a plurality of electrically conductive pads (118, 318, 418) and the pads are electrically isolated from each other. A plurality of light emitting elements (120, 320, 420) are arranged on the collar portion of the housing. Each of the light emitting elements has a first terminal (128) electrically connected to a first electrically conductive pad (118a, 418a) and a second terminal (124) electrically connected to a second electrically conductive pad (118b, 418b). The collar portion is directly in contact with the surroundings, promoting an improved heat transfer from the light emitting elements.

Abstract: Disclosed is a lighting device (10) comprising a heat sink (30) having an annular portion (31) including an annular surface portion (33) delimiting a central aperture (37), said annular surface portion (33) carrying a plurality of SSL elements (50); and a bulbous member (20) cooperating with the heat sink (30), said bulbous member (20) having a first surface portion (21) opposite said SSL elements (50) and a second surface portion (22) extending from said first surface portion (21) through said central aperture (37); wherein the bulbous member (20) is used as a light guide member for light emitted by the plurality of SSL elements (50). A luminaire including such a lighting device (10) is also disclosed.

Abstract: A lighting device or a lamp bulb (100, 200) comprises at least one light source (101) and a driver assembly (108), said driver assembly comprising driver electronics; wherein during operation of the light source, a distance between an optical axis (120) of the lighting device and a heat flow of the lighting device is less than a distance between the optical axis (120) and a component of the driver electronics having the highest temperature sensitivity.