公开(公告)号：US20230126041A1

公开(公告)日：2023-04-27

申请号：US17898971

申请日：2022-08-30

Applicant: Lumileds LLC

Inventor： Isaac Wildeson ,  Hossein Lotfi ,  Ronald Bonne ,  Toni Lopez

IPC: H01L33/00 ,  H01L25/075 ,  H01L33/62

Abstract: A light emitting diode (LED) device comprises a plurality of pixels on a backplane, each pixel comprising: semiconductor layers, which include an N-type layer, an active region, and a P-type layer; a cathode electrically contacting the N-type layer; an anode comprising anode segments electrically contacting respective portions of the P-type layer; one or more dielectric materials insulating: the active region and the P-type layer from the cathode, the anode segments from each other, and the anode segments from the cathode; and a plurality of interconnects, each respective interconnect affixing a respective anode segment to the backplane. Methods of making and use the devices are also provided.

公开(公告)号：US11521298B2

公开(公告)日：2022-12-06

申请号：US16456852

申请日：2019-06-28

Applicant: Lumileds LLC

Inventor： Ronald Bonne ,  Jyoti Kiron Bhardwaj

IPC: G06T3/40 ,  G09G3/20 ,  H05B45/50 ,  F21S41/141 ,  H05B45/00 ,  H05B47/105 ,  F21V23/04

Abstract: An LED controller system includes an LED controller including an image frame buffer able to receive image data. A sensor processing module is used to receive and process sensor data and a decision module is used to determine actions taken in response to processed sensor data. An image creation module is used to create images to be sent to the image frame buffer of the LED controller.

公开(公告)号：US11107386B2

公开(公告)日：2021-08-31

申请号：US16456868

申请日：2019-06-28

Applicant: Lumileds LLC

Inventor： Ronald Bonne

IPC: G09G3/20 ,  G09G3/32 ,  H05B45/10 ,  H05B39/04

Abstract: A LED controller includes an image buffer to hold image data. An LED pixel forming a part of a large pixel array is activatable in response to image data, LDO state, and pulse width modulation module state. A logic module including a pixel diagnostic mode using an LDO bypass is connected to modify LDO state and allow direct addressing of the LED pixel for diagnostic purposes without needing to use image data from the image buffer.

公开(公告)号：US11011100B2

公开(公告)日：2021-05-18

申请号：US16456874

申请日：2019-06-28

Applicant: Lumileds LLC

Inventor： Ronald Bonne

IPC: G09G3/20 ,  G09G3/32 ,  H05B45/10 ,  H05B39/04

Abstract: A LED controller for an LED pixel array includes a switch K1 activated in response to a row and column select signal; a switch K2 activated in response to a pulse width modulation duty cycle; and a switch K3 providing a current source from Vbias. Pixel activation is determined at least in part by state of switch K1 and K2. In operation, the LED pixel in the LED pixel array is selected by switch K1 and a fault determination for the LED pixel is made based on determined Vf on a Vf bus.