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公开(公告)号：US20250124856A1
公开(公告)日：2025-04-17
申请号：US18913600
申请日：2024-10-11
Applicant: Google LLC
Inventor： Bo Li , Edwin Lyle Hudson
Abstract: A word line regulator that can control an SRAM cell during a write process is disclosed. The SRAM cell is coupled to bit lines that are driven using a reduced voltage in order to conserve power. The SRAM cell includes a latch that is powered by a power supply in a power domain that is different from the bit lines. The word line regulator is configured to output a voltage that is based on the different power domains to ensure the proper operation of transistors in the SRAM cell during the write process.
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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
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.
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公开(公告)号：US20240221627A1
公开(公告)日：2024-07-04
申请号：US18544051
申请日：2023-12-18
Applicant: GOOGLE LLC
Inventor： Edwin Lyle Hudson , Bo Li
IPC: G09G3/32 , G11C11/412
CPC classification number: G09G3/32 , G11C11/412 , G09G2300/0842 , G09G2310/0297
Abstract: A backplane operative to drive an array of emissive pixel elements is disclosed. A plurality of pixel drive circuits form part of an array of emissive elements. The plurality of pixel drive circuits are disposed to form a plurality of rows and a plurality of columns. The plurality of pixel drive circuits are organized into sets of pixel drive circuits, and each set comprises at least one pixel drive circuit.
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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
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.
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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
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.
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Patent Agency Ranking
公开(公告)号：US20230147106A1
公开(公告)日：2023-05-11
申请号：US18150724
申请日：2023-01-05
Applicant: GOOGLE LLC
Inventor： Bo Li , Kaushik Sheth , Edwin Lyle Hudson
IPC: G09G3/36
CPC classification number: G09G3/3688 , G09G2360/12
Abstract: A backplane design for delivering image data in an efficient manner to a memory cell forming a part of a pixel driver comprises a word line design and a column data register release signal delivery design that are speed matched and a complementary bit line delivery design that is speed matched to a row decoder signal circuit operative to pull a word line driver to a state to enable the memory circuits of that row to receive data from the column drivers for each column. The speed matching is effective over a range of operating temperatures because the circuit designs are substantially identical.
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公开(公告)号：US11847957B2
公开(公告)日：2023-12-19
申请号：US17552158
申请日：2021-12-15
Applicant: GOOGLE LLC
Inventor： Edwin Lyle Hudson , Bo Li
IPC: G09G3/32 , G11C11/412
CPC classification number: G09G3/32 , G11C11/412 , G09G2300/0842 , G09G2310/0297
Abstract: A plurality of pixel drive circuits form part of an array of emissive elements. The plurality of pixel drive circuits are disposed to form a plurality of rows and a plurality of columns. The plurality of pixel drive circuits are organized into sets of pixel drive circuits, and each set comprises at least one pixel drive circuit. A FET of a set of pixel drive circuits shares a common well with other FETs of similar function in the same set of pixel drive circuits positioned therein, such that the variance of the threshold voltages of those FETs is substantially reduced. Each of the pixel drive circuits comprises a circuit operative to deliver a current at a predetermined voltage to an emissive device and a memory circuit operative to receive modulation data and to use same to modulate the current output of the pixel drive circuit.
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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
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.
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公开(公告)号：US20250140177A1
公开(公告)日：2025-05-01
申请号：US18932204
申请日：2024-10-30
Applicant: GOOGLE LLC
Inventor： Bo Li , Edwin Lyle Hudson
Abstract: A high-resolution display that is a small size suitable for mobile applications is disclosed. The display is color and so includes different color subpixels arranged in subpixel groups. To minimize power consumption, each subpixel includes its own power rail supplying the subpixel with a rail voltage that is based on a forward voltage of a corresponding light emitting diode. To minimize the area of the subpixel group, transistors of the subpixels are fabricated within a common well and the body terminals of the transistors are connected to a common well rail that is separate from the power rails.
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公开(公告)号：US20250131951A1
公开(公告)日：2025-04-24
申请号：US18920286
申请日：2024-10-18
Applicant: Google LLC
Inventor： Edwin Lyle Hudson , Bo Li , Samuel Tien-en Lee , Kaushik Indravadan Sheth
IPC: G11C7/22 , G09G3/32 , G11C11/418 , G11C11/419
Abstract: A backplane including bit lines and word lines to update a radiative state of a pixel is disclosed. The back plane includes a first delay line that replicates delays caused by a bit line and a second delay line that replicates delays caused by a word line. The replicated delays cause word line signals traveling along a first path to arrive at a pixel at approximately the same time as bit line signals traveling along a second path. The delays are added incrementally row-by-row and column-by-column so that each pixel can receive synchronized signals regardless of its position in the array of pixels.
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