63 results about "Diode matrix" patented technology

Apparatus and method for both displaying graphical output and for sensing, e.g., multi-touch input are provided. A light-emitting diode (“LED”) matrix-array may be configured to both emit and sense light. The array may be driven in such a way so as to enable the array itself to act as the illumination source preferable for either reflective or scattering optical touch sensing. The need for additional opto-electronic components, or an external illumination source, is thus eliminated or at least reduced, and sensing accuracy is likely improved. Additionally, the method is practical for large dimensions.

Disclosed is a manufacturing method for a structure of a wafer level light emitting diode matrix. The method includes the following steps: step1, wherein an epitaxial wafer is taken; step2, wherein a light emitting diode unit module is manufactured on the epitaxial wafer to form a light emitting diode matrix, and the light emitting diode unit module comprises a plurality of light emitting diodes; step3, wherein fluorescent powder is coated on the light emitting diodes in the light emitting diode unit module, the light emitting diodes motivates the fluorescent powder to produce light with different wavelengths, so that output light and color of the light emitting diodes are adjusted; step4, wherein a substrate is taken; step5, wherein epitaxial wafers with light emitting diode matrixes are fixed on the substrate in sequence, and the epitaxial wafers are electrically connected with the substrate, so that the manufacture of the structure is finished. The method can be combined with a manufacturing technique of the light emitting diode and a packaging technique of a chip, a technical path is simplified, and technical cost is reduced. With the technique, the size and the space between the light emitting diodes can be accurately controlled.

Apparatus and method for both displaying graphical output and for sensing, e.g., multi-touch input are provided. A light-emitting diode (“LED”) matrix-array may be configured to both emit and sense light. The array may be driven in such a way so as to enable the array itself to act as the illumination source preferable for either reflective or scattering optical touch sensing. The need for additional opto-electronic components, or an external illumination source, is thus eliminated or at least reduced, and sensing accuracy is likely improved. Additionally, the method is practical for large dimensions.

The invention relates to a device and method for monitoring the abnormal state of a light-emitting diode. The device is connected to both ends of the light-emitting diode and can be used for monitoring the abnormal state of the light-emitting diode by detecting the change of the working voltage of the light-emitting diode. The device and the method can be used for monitoring the working voltage VF of each light-emitting diode in a light-emitting diode matrix in real time, judging whether the working voltage VF is higher than a determined high threshold voltage VH or not and whether the working voltage VF is lower than a determined low threshold voltage VL or not, and accordingly judging whether a current light-emitting diode abnormally works or not, or short circuit or open circuit faults are already generated or not; and in addition, the positions of the light-emitting diodes which abnormally work and go wrong can be positioned quickly under the working state of the light-emitting diode matrix so as to facilitate maintenance and replacement.

A method for the production and formation of microscopic semiconductor light emitting diodes Is set out. The method comprises the steps of: producing a semiconductor light emitting device (100) including a pn-junction (24) and metallization layers (6, 7); applying an etching mask (9-11) with a preset structure on one side of the semiconductor device (100), whereby the masked areas of the arrangement form and correspond to the diodes to be formed (30); applying a carrier (8, 12) on the other side of the semiconductor device (100); vertically etching the semiconductor material in the openings of the etching mask (9-11) to the carrier (8, 12) and thereby producing a diode arrangement containing a multiple number of diodes (30) below the masked areas. In addition, the method further comprises: removing the etching mask (9-11); providing an accommodating device (20) containing slots (22) with an arrangement and form that correspond to the numerous diodes, whereby the slots are suited for the reception of the diodes (30) therein; engaging the diode arrangement into the accommodating device (20); and removing of the carrier (8, 12). This method can be used for the production of a LED display device having a high pixel density.

The invention relates to a device for producing a bundled light flux. According to the invention, a light source consisting of a light emitting diode matrix is provided, an optical device for bundling and scattering the light produced by the light-emitting diodes is arranged between the light source and a light outlet. The device for bundling and scattering comprises a latticed reflector which respectively forms a light channel for each matrix point, the walls of said light channel being reflective, and the end of each light channel, facing the light source contains a convergent lens.

The embodiment of the invention discloses a test device and test system for an electric vehicle thermal management system. The system comprises a button array which is used for receiving a user-triggered test instruction, a control module which is used for converting a test instruction into a corresponding execution piece operation command of the thermal management system, a control area network (CAN) communication module which is used for encapsulating the execution piece operation command of the thermal management system, and a light emitting diode matrix which is used for displaying a feedback result. A first CAN packet is sent to an electric vehicle controller through an onboard diagnostics (OBD) interface, so that the electric vehicle controller operating in a test mode analyzes the execution piece operation command of the thermal management system from the first CAN packet and sends the execution piece operation command of the thermal management system to a thermal management system execution piece. The feedback result provided by the thermal management system execution piece is received by an OBD interface from the electric vehicle controller. According to the invention, the test convenience can be improved.

An eyewear with a pair of light emitting diodes (LED) matrices is an apparatus that enhances the aesthetic appeal of the eyewear by illuminating different patterns and letterings with the pair of LED matrices. A left lens and a right lens each have an LED matrix, which traverse through and protrude out of their respective lens. Both LED matrices are electronically connected to a programmable microcontroller, which is able to turn on / off each individual LED in order to create the patterns and letterings on the LED matrices. The microphone and VU meter also allows the LED matrices to display patterns and lettering that relate to the music or sounds around the apparatus. Each individual LED for both LED matrices are properly spaced apart from each other so that visibility is not significantly reduced while wearing the apparatus.

A scene simulation lighting device comprises a light emitting device, an environmental brightness sensing unit and a controller, wherein the light emitting device is provided with a light emitting diode matrix, the light emitting diode matrix comprises light emitting diodes with various colors and can generate light rays with different colors and illumination modes, the environmental brightness sensing unit is used for sensing a light ray of a natural environment, the controller is provided with a simulation control program, and the simulation control program can be used for dimming brightness of the light emitting diodes with different colors in the light emitting diode matrix and controlling the light emitting diodes to act according to the light ray of the environment sensed by the environmental brightness sensing unit. By the scene simulation lighting device, the light rays of different scenes such as sky blue, cloud floating and sunlight and the illumination modes can be simulated, and a lighting effect approaching the natural environment is further provided.

The invention discloses an equipment shift monitoring and alarm device. The device comprises: a shift detection unit, a vehicle monitoring terminal and a ground monitoring terminal. The shift detection unit and the vehicle monitoring terminal carry out data transmission through a wireless mode. The vehicle monitoring terminal and the ground monitoring terminal carry out the data transmission through the wireless mode. The shift detection unit comprises a laser emission head, a shift detection module, a wireless data transmission module and an external antenna. The shift detection module is formed by a photosensitive diode matrix plate, a master control circuit board and a shift wireless data transmission module, wherein the photosensitive diode matrix plate, the master control circuit board and the shift wireless data transmission module are successively connected and arranged in a shell. The vehicle monitoring terminal comprises a PDA host and a terminal wireless data transmission module. A CDMA module and an SIM card are embedded in the PDA host. The ground monitoring terminal comprises a computer which is equipped with a short message receiving module and monitoring software. By using the invention, generation of railway transport accidents can be avoided; equipment transport safety can be guaranteed; economic losses caused by the accidents can be reduced; monitoring capability of escorts can be raised; labor intensity can be reduced.

The invention provides a multispectral light source and a fundal imaging system and fundal imaging method, wherein the multispectral light source includes one or more lighting units and a control unit; each lighting unit includes a light-emitting diode matrix; each light-emitting diode matrix emits light of various wavelengths; the control unit converts a control command from a central control unit into a control signal to trigger the specified light-emitting matrix, in the specified lighting unit, to emit light of set wavelength and set energy, thus outputting multispectral light. The multispectral light source and the fundal imaging system and fundal imaging method have the advantages that multispectral light having the parameters, such as shape, wavelength, energy and flashing time, meet users' needs can be acquired herein, the multispectral light of good properties is provided for the fundal imaging system or other imaging and lighting systems, imaging capacity is improved, and images are more vivid.

The invention provides a lamp for a refrigerating chamber, which comprises a first light emitting diode matrix and a second light emitting diode matrix which are arranged on an air flue shell of the refrigerating chamber and a lamp shade for covering the first light emitting diode matrix and the second light emitting diode matrix on the air flue shell, wherein light emitting sides of the first light emitting diode matrix and the second light emitting diode matrix are opposite and incline towards the air flue shell. The invention also provides a refrigerator with the refrigerating chamber, and the lamp for the refrigerating chamber is arranged in the refrigerating chamber. Therefore, asymmetrical lightspots are prevented from occurring on the lamp shade, and light rays of a light emitting diode are reflected by the air flue shell and are incident to the lamp shade, so that the light rays can be irradiated uniformly. In addition, due to the arrangement mode of the first light emitting diode matrix and the second light emitting diode matrix, the distance between the light emitting diode and the lamp shade is reduced, so that the occupation space of an illuminating lamp is reduced correspondingly to enlarge the utilization space of the refrigerating chamber.

The present invention relates to an information input panel using the light emitted diode (LED) matrix. The panel includes the LED matrix and a control circuit. The LED matrix includes N×M LEDs. The control circuit includes N first terminals and M second terminals, wherein the ith first terminal thereof is coupled to first terminals of the LEDs in the ith row and the jth second terminal thereof is coupled to second terminals of the LEDs in the jth column. In the kth detecting period, the control circuit detects the reverse photoelectric currents of each LED from the second terminals through the kth first terminal to determine whether LED in the kth row is lighted up or not, wherein “M”, “N”, “i”, “j”, “k” are nature numbers and 0<i<=M; 0<j<=N; 0<k<=M.

A passive micro light-emitting diode matrix device with uniform luminance includes a micro light-emitting diode array and an external circuit assembly. The micro light-emitting diode array comprises asubstrate, a plurality of micro light-emitting arrays which are distributed on the substrate at intervals along the Y direction, and an insulating layer for the arrays. Each micro-light-emitting array is sequentially provided with a first layer, a plurality of spaced light-emitting layers, a second layer, a first inner electrode layer and a second inner electrode layer, wherein the first layer extends in the X direction, and the second inner electrode layer extends in the first layer and is provided with a base part surrounding the light-emitting layers at intervals and a protruding part protruding from the base part. The array covers the substrate with an insulating layer and exposes the first and second inner electrode layers. The external circuit assembly comprises a carrier plate facing the substrate, a first external circuit and a second external circuit which are spaced in the Y direction and the X direction and extend to the carrier plate in the X direction and the Y direction,a circuit insulating layer exposing the first external circuit and the second external circuit, and an electrical bonding unit bonded to the first external circuit, the second external circuit, the first internal electrode layer and the second internal electrode layer. By means of the external circuit assembly on the carrier plate, the area of the array arrangement surface can be effectively utilized.

A process for manufacturing an optoelectronic device having a diode matrix with semiconductor stacks involves providing a growth substrate having a support substrate coated with a nucleation layer defining a nucleation surface. A dielectric layer is deposited on the nucleation surface. A plurality of through-holes, extending to the nucleation surface, are formed in the dielectric layer. The nucleation layer, located in the through-holes, is etched to free up an upper surface of the support surface and expose a lateral surface of the nucleation layer forming a lateral nucleation surface. A dielectric region is formed extending in the support substrate such that, during a subsequent epitaxial growth stage, each first doped portion is formed especially from the lateral nucleation surface. In the through-holes and from the nucleation surface, the semiconductor stacks are epitaxially grown such that at least the first doped portions and active zones thereof are located in the through-holes.