公开(公告)号：WO2023086348A1

公开(公告)日：2023-05-19

申请号：PCT/US2022/049348

申请日：2022-11-09

Applicant: LUMILEDS LLC

Inventor： WILDESON, Isaac ,  LOTFI, Hossein ,  LOPEZ, Toni

IPC: H01L33/46 ,  H01L33/38 ,  H01L33/20 ,  H01L27/15 ,  H01L33/42 ,  H01L33/00 ,  H01L33/40

Abstract: An LED device comprises a mesa comprising semiconductor layers, the semiconductor layers including an N-type layer, an active layer, and a P-type layer, the mesa having a top surface and at least one side wall, the at least one side wall defining a trench have a bottom surface. A transparent conductive layer is on at least one side wall and in the trench. A cathode layer is in the trench on the transparent conductive layer. A p-type contact is on the top surface of the mesa. In some embodiments, a spacer layer is formed between the transparent conductive layer and the cathode layer. In other embodiments, a distributed Bragg reflector is formed between the transparent conductive layer and the cathode layer.

公开(公告)号：WO2023086347A1

公开(公告)日：2023-05-19

申请号：PCT/US2022/049347

申请日：2022-11-09

Applicant: LUMILEDS LLC

Inventor： WILDESON, Isaac ,  LOTFI, Hossein ,  LOPEZ, Toni

IPC: H01L33/38 ,  H01L33/20 ,  H01L33/42 ,  H01L33/44 ,  H01L33/32 ,  H01L27/15 ,  H01L33/00

Abstract: An LED device comprises a mesa comprising semiconductor layers, the semiconductor layers including an N-type layer, an active layer, and a P-type layer, the mesa having a top surface and at least one side wall, the at least one side wall defining a trench have a bottom surface. A transparent conductive layer is on at least one side wall and in the trench. A cathode layer is in the trench on the transparent conductive layer. A p-type contact is on the top surface of the mesa. In some embodiments, a spacer layer is formed between the transparent conductive layer and the cathode layer. In other embodiments, a distributed Bragg reflector is formed between the transparent conductive layer and the cathode layer.

公开(公告)号：WO2023069286A1

公开(公告)日：2023-04-27

申请号：PCT/US2022/046411

申请日：2022-10-12

Applicant: LUMILEDS LLC

Inventor： ROITMAN, Daniel B. ,  CHIANG, Franklin ,  WONG, Vernon

IPC: H01L33/50 ,  H01L33/58 ,  H01L27/15 ,  H01L25/075

Abstract: This specification discloses LEDs, pcLEDs, and arrays of LEDs or pcLEDs in which the LEDs or pcLEDs comprise a structured high refractive index coating on a light output surface that improves light extraction from the device through the light output surface. The coating is formed additively instead of by a subtractive process that removes material from the surface, and consequently can avoid the disadvantages associated with subtractive processes.

公开(公告)号：WO2023064462A1

公开(公告)日：2023-04-20

申请号：PCT/US2022/046558

申请日：2022-10-13

Applicant: LUMILEDS LLC

Inventor： LOPEZ JULIA, Antonio ,  PFEFFER, Nicola Bettina ,  SHCHEKIN, Oleg Borisovich

IPC: H01L33/46 ,  H01L33/52 ,  H01L33/38 ,  H01L33/40 ,  H01L33/06 ,  H01L25/075

Abstract: A structure and method of micro-LEDs are described. The micro-LEDs have a GaN semiconductor structure containing a multi-quantum well active region configured to emit light of a visible wavelength range and a multilayer reflector structure that includes a distributed Bragg reflector (DBR) with a maximum reflectance at the visible wavelength range and to reflect the light emitted by the active region towards an emission surface of the semiconductor structure. The multilayer reflector structure also has a protective layer between the DBR and the GaN structure that is transparent to light of visible wavelengths. The multilayer reflector structure also has an absorbing metal layer that absorbs the light of visible wavelengths. A conductive material provides electrically contact to the semiconductor structure.

公开(公告)号：WO2023038986A1

公开(公告)日：2023-03-16

申请号：PCT/US2022/042778

申请日：2022-09-07

Applicant: LUMILEDS LLC

Inventor： KLEIJNEN, Christian ,  MONESTIER, Florent Grégoire ,  MÜLDERS, Barbara Roswitha ,  KURTH, Tobias ,  HENNINGER, Georg Friedrich Alfons

IPC: F21S4/24 ,  F21S41/151 ,  F21S43/15 ,  F21V23/00 ,  F21V23/06 ,  H05K1/18 ,  F21Y103/10 ,  F21Y107/70 ,  F21Y115/10

Abstract: An LED lighting strip, method of manufacturing an LED lighting strip and an automotive lighting system are described. The LED lighting strip (100) includes at least two outer wires (12, 14), at least one central wire (15) between the two outer wires, LEDs (22) arranged along the LED lighting strip and electrically coupled at least to the at least two outer wires (12, 14), and an enclosing member (52) enclosing the at least two outer wires, the at one central wire and the LEDs. The at least two outer wires (12, 14) and the least one central wire (15) have a bend (51) in sections between at least some adjacent LEDs (22).

公开(公告)号：WO2023028121A1

公开(公告)日：2023-03-02

申请号：PCT/US2022/041341

申请日：2022-08-24

Applicant: LUMILEDS LLC

Inventor： STRAETMANS, Jean-Sebastien

IPC: B60Q1/26 ,  B60Q1/38 ,  B60Q1/44 ,  B60Q1/50 ,  F21S43/14 ,  F21S43/19 ,  F21S43/20 ,  F21S43/31 ,  F21K9/232 ,  F21W103/35 ,  F21W103/20 ,  F21W103/60

Abstract: An LED retrofit signaling lamp is described herein. The lamp includes a lamp body, which includes a cap, a projection part, and a burner part between the cap and the projection part. Power contacts are exposed from the cap. A projection LED light source is provided in the projection part and angled to provide a projected image near to the vehicle when activated. A signaling LED light source is provided in the burner part angled to emit non-projected light via the projection part at angles that avoid the emitted light being blocked by the projection LED light source. The projection LED light source and the signaling LED light source are electrically coupled to the power contacts in parallel to each other.

公开(公告)号：WO2023283489A1

公开(公告)日：2023-01-12

申请号：PCT/US2022/036709

申请日：2022-07-11

Applicant: LUMILEDS LLC

Inventor： DECKERS, Michael

IPC: H01L25/075 ,  H01L33/62 ,  F21S41/153

Abstract: A composite array has two two-dimensional arrays on a substrate each having two rows of LEDs. The LEDs in each array have the same orientation as all other LEDs in that array. First electrical traces sequentially couple LEDs in the first string and the second string by beginning at opposite corners of the composite array and alternating between rows of each of the first and second arrays. A second electrical trace couples ends of the first and second strings across rows of the composite array. Third electrical traces route outside the composite array and are coupled, respectively, to a beginning of the first string for the row of the composite array containing the beginning of the first string, a beginning of the second string for the other row, the end of the first LED string for the other row, and electrodes of LEDs in the other row.

公开(公告)号：WO2023278450A1

公开(公告)日：2023-01-05

申请号：PCT/US2022/035322

申请日：2022-06-28

Applicant: LUMILEDS LLC

Inventor： ENGELEN, Rob Jacques Paul ,  AAS, Mehdi

IPC: G09F9/33 ,  F21K9/00 ,  G06T7/80 ,  G06T7/90 ,  H04N9/31 ,  H05B47/155

Abstract: A structure and method of operating micro-LEDs are described. The micro-LEDs are arranged in a micro-LED array and have random orientations, distributions, and positions within the array. A lens array includes micro-lenses configured to capture light from the micro-LEDs. The micro-LED array structure is calibrated by capturing light from each of the micro-LEDs at different times and determining characteristics of the light from each of the micro-LEDs. Once image data of an image to be generated by the micro-LED array is received, a combination of the micro-LEDs to activate to produce the image, as well as the characteristics for driving the individual micro-LEDs is determined. The micro-LEDs are then activated to produce the image.

公开(公告)号：WO2022211988A1

公开(公告)日：2022-10-06

申请号：PCT/US2022/019264

申请日：2022-03-08

Applicant: LUMILEDS LLC

Inventor： WILDESON, Isaac ,  LOTFI, Hossein ,  LOPEZ, Toni ,  SHCHEKIN, Oleg Borisovich

IPC: H01L27/15 ,  H01L33/60 ,  H01L33/50 ,  H01L33/00 ,  H04M1/02

Abstract: LED arrays comprise patterned reflective grids that enhance the contrast ratio between adjacent pixels or adjacent groups of pixels in the array. The pattern on the reflective grid may also improve adhesion between the reflective grid and one or more layers of material disposed on and attached to the reflective grid. The reflective grid may be formed, for example, as a reflective metal grid, a grid of dielectric reflectors, or a grid of distributed Bragg reflectors (DBRs). If formed as a metal grid, the reflective grid may provide electrical contact to one side of the LED diode junctions. This specification also discloses fabrication processes for such LED arrays.

公开(公告)号：WO2022132264A1

公开(公告)日：2022-06-23

申请号：PCT/US2021/051176

申请日：2021-09-21

Applicant: LUMILEDS LLC

Inventor： ARMITAGE, Robert ,  WILDESON, Isaac

IPC: H01L33/04 ,  H01L33/14 ,  H01L33/20 ,  H01L33/36 ,  H01L33/46

Abstract: Described are light emitting diode (LED) devices including a combination of electroluminescent and photo-luminescent active regions in the same wafer to provide LEDs with emission spectra that are adjustable after epitaxial growth. The LED device includes a multilayer anode contact comprising a reflecting metal and at least one transparent conducting oxide layer in between the metal and the p-type layer surface. The thickness of the transparent conducting oxide layer may vary for LEDs fabricated with different emission spectra.