公开(公告)号：US12067932B2

公开(公告)日：2024-08-20

申请号：US18297909

申请日：2023-04-10

Applicant: GOOGLE LLC

Inventor： Edwin Lyle Hudson ,  Robert Lo

IPC: G09G3/32 ,  G09G3/34

CPC classification number: G09G3/32 ,  G09G3/3426 ,  G09G2300/0847 ,  G09G2310/0275 ,  G09G2320/0247 ,  G09G2380/10

Abstract: A backplane operative to drive an array of emissive pixel elements forming a part of an automotive head lamp assembly is disclosed. Each pixel element comprises a memory cell operative to pulse width modulate a current mirror pixel drive circuit configured to drive an emissive element. The array of emissive pixel elements is divided into a plurality of interdigitated rows or columns serviced by independent row drivers or independent column drivers that may be driven by data selected to randomize the order in which the data on adjacent pixels of the same row are written, thereby effectively substantially reducing the visibility of any residual structures that may be present in the data driving the pixels of adjacent columns.

公开(公告)号：US20230335047A1

公开(公告)日：2023-10-19

申请号：US18297909

申请日：2023-04-10

Applicant: GOOGLE LLC

Inventor： Edwin Lyle Hudson ,  Robert Lo

IPC: G09G3/32 ,  G09G3/34

CPC classification number: G09G3/32 ,  G09G3/3426 ,  G09G2320/0247 ,  G09G2300/0847 ,  G09G2380/10 ,  G09G2310/0275

Abstract: A backplane operative to drive an array of emissive pixel elements forming a part of an automotive head lamp assembly is disclosed. Each pixel element comprises a memory cell operative to pulse width modulate a current mirror pixel drive circuit configured to drive an emissive element. The array of emissive pixel elements is divided into a plurality of interdigitated rows or columns serviced by independent row drivers or independent column drivers that may be driven by data selected to randomize the order in which the data on adjacent pixels of the same row are written, thereby effectively substantially reducing the visibility of any residual structures that may be present in the data driving the pixels of adjacent columns.

公开(公告)号：US20230027570A1

公开(公告)日：2023-01-26

申请号：US17865298

申请日：2022-07-14

Applicant: GOOGLE LLC

Inventor： Jeffrey Li ,  Robert Lo

IPC: G09G3/3233 ,  G11C19/28

Abstract: A backplane for driving a display includes a two-dimensional array of pixel drive circuits, organized as a plurality of rows and a plurality of columns. The backplane has at least one shift register addressing assembly that includes a shift register chain formed of a plurality of controlling shift registers serially connected with, and separated by, equal sized groups of non-controlling shift registers. Each controlling shift register controls a different one of a plurality of word lines that each connect with pixel drive circuits of one row. The backplane also includes a plurality of bit lines that each connect with pixel drive circuits of one column. A shift register data sequence is input to a first one of the plurality of controlling shift registers and propagates through the shift register chain to control the plurality of word lines to load display values from the bit lines into the pixel drive circuits.

公开(公告)号：US11810509B2

公开(公告)日：2023-11-07

申请号：US17865298

申请日：2022-07-14

Applicant: GOOGLE LLC

Inventor： Jeffrey Li ,  Robert Lo

IPC: G09G3/3233 ,  G11C19/28

CPC classification number: G09G3/3233 ,  G11C19/28 ,  G09G2300/0842 ,  G09G2310/0286

Abstract: A backplane for driving a display includes a two-dimensional array of pixel drive circuits, organized as a plurality of rows and a plurality of columns. The backplane has at least one shift register addressing assembly that includes a shift register chain formed of a plurality of controlling shift registers serially connected with, and separated by, equal sized groups of non-controlling shift registers. Each controlling shift register controls a different one of a plurality of word lines that each connect with pixel drive circuits of one row. The backplane also includes a plurality of bit lines that each connect with pixel drive circuits of one column. A shift register data sequence is input to a first one of the plurality of controlling shift registers and propagates through the shift register chain to control the plurality of word lines to load display values from the bit lines into the pixel drive circuits.

公开(公告)号：US11626062B2

公开(公告)日：2023-04-11

申请号：US17178576

申请日：2021-02-18

Applicant: Google LLC

Inventor： Edwin Lyle Hudson ,  Robert Lo

IPC: G09G3/32 ,  G09G3/34

Abstract: A backplane operative to drive an array of emissive pixel elements forming a part of an automotive head lamp assembly is disclosed. Each pixel element comprises a memory cell operative to pulse width modulate a current mirror pixel drive circuit configured to drive an emissive element. The array of emissive pixel elements is divided into a plurality of interdigitated rows or columns serviced by independent row drivers or independent column drivers that may be driven by data selected to randomize the order in which the data on adjacent pixels of the same row are written, thereby effectively substantially reducing the visibility of any residual structures that may be present in the data driving the pixels of adjacent columns.

公开(公告)号：US20250142028A1

公开(公告)日：2025-05-01

申请号：US18932142

申请日：2024-10-30

Applicant: GOOGLE LLC

Inventor： Edwin Lyle Hudson ,  Robert Lo ,  Jeffrey Tang Fung Li ,  Stuart James Myron Nicholson

IPC: H04N9/31 ,  G06F3/147

Abstract: An illustrative display system includes an array of pixels and a frame controller configured to cause the array of pixels to display an image frame by performing a series of successive field updates. The series of successive field updates includes a first field update in which a first write pointer circuit tracks a first traversal, during a first update period, across the array of pixels to update the array of pixels from a first to a second image field in the sequence, and a second field update in which a second write pointer circuit tracks a second traversal, during a second update period, across the array of pixels to update the array of pixels from the second to a third image field in the sequence. The second update period of the second field update overlaps the first update period of the first field update.