公开(公告)号：US20200349881A1

公开(公告)日：2020-11-05

申请号：US16642893

申请日：2018-08-30

申请人： PLANAR SYSTEMS, INC.

发明人： Shahnad Nadershahi

IPC分类号： G09G3/32

摘要： A current controller for an output stage of light emitting diode (LED) driver circuitry includes a current source establishing a nominal amount of current available for each member of the set of channels. The nominal amount of current is based on, e.g., a desired brightness level. Pulse width modulation (PWM) circuitry is electrically coupled to the current source and is configured to control durations in which adjusted amounts of current are applied to corresponding members the set of LEDs. Compensation circuitry is electrically coupled to the current source and the PWM circuitry. The compensation circuitry includes a set of switching elements to adjust, for each corresponding member of the set of LEDs, the nominal amount of current and thereby provide to the PWM circuitry the adjusted amounts of current based on feedback representing one or both load impedance variations and parasitic conditions (LIVPC) and process, voltage and temperature (PVT) conditions.

公开(公告)号：US20170159876A1

公开(公告)日：2017-06-08

申请号：US15441008

申请日：2017-02-23

申请人： Planar Systems, Inc.

发明人： Neil Brashnyk ,  Todd Loewy ,  Eric Schuettke

IPC分类号： F16M13/02 ,  H01F7/02 ,  G09F9/302 ,  F16B5/02 ,  B25B27/14

CPC分类号： F16B1/00 ,  B25B23/12 ,  B25B27/14 ,  E05B47/004 ,  E05B47/0045 ,  F16B5/02 ,  F16B2001/0035 ,  F16K31/088 ,  F16M11/041 ,  F16M11/121 ,  F16M11/18 ,  F16M13/02 ,  F16M13/022 ,  F21V21/34 ,  G06F3/1446 ,  G09F9/3026 ,  G09F9/33 ,  G09G3/30 ,  H01F7/0252 ,  H05K5/0021 ,  H05K7/1427

摘要： A mounting and leveling system for an electronic image display device (10) formed of an array of multiple display sections (12) facilitates adjustment of the alignment of adjacent display sections to minimize visible seams between display sections. Some embodiments include one or more magnetically actuated fasteners (220) that facilitate front-access-only installation and adjustment without requiring access to the rear, top, bottom, or sides of the array. Tools (300, 410) for installation and removal of display modules (50) from a front side of the display device are also disclosed. Fasteners (220) for providing a hidden adjustable connection between first and second objects are also disclosed. One such fastener includes a screw (226) having a magnetic head (222) that presents a magnetic moment perpendicular to its axis of rotation (234).

公开(公告)号：US20030205662A1

公开(公告)日：2003-11-06

申请号：US10457931

申请日：2003-06-09

申请人： Planar Systems, Inc.

发明人： Willem den Boer

IPC分类号： H01L027/00

CPC分类号： H01L27/14609 ,  H01L27/14643

摘要： An image sensor array includes image sensors having photo TFTs to generate photocurrent in response to received images. The photo TFTs each have their respective gate electrodes shorted to source electrodes to increase generated photocurrent. Each photo TFT is coupled to a reference TFT to compensate for dark current in a corresponding photo TFT. Storage capacitors are coupled to each photo TFT and discharged upon generation of a photocurrent. Each storage capacitor is coupled to a readout TFT that passes a current from the storage capacitor to a data line. Data lines indicate location of the received image on the image sensor array.

摘要翻译： 图像传感器阵列包括具有光TFT的图像传感器，以响应于接收的图像产生光电流。 光电TFT各自具有与源电极短路的各自的栅电极，以增加产生的光电流。 每个光电TFT耦合到参考TFT以补偿相应的照相TFT中的暗电流。 存储电容器耦合到每个光电TFT并且在产生光电流时放电。 每个存储电容器耦合到将电流从存储电容器传递到数据线的读出TFT。 数据线表示接收到的图像在图像传感器阵列上的位置。

公开(公告)号：US10891893B2

公开(公告)日：2021-01-12

申请号：US16642893

申请日：2018-08-30

申请人： PLANAR SYSTEMS, INC.

发明人： Shahnad Nadershahi

IPC分类号： G09G3/32

摘要： A current controller for an output stage of light emitting diode (LED) driver circuitry includes a current source establishing a nominal amount of current available for each member of the set of channels. The nominal amount of current is based on, e.g., a desired brightness level. Pulse width modulation (PWM) circuitry is electrically coupled to the current source and is configured to control durations in which adjusted amounts of current are applied to corresponding members the set of LEDs. Compensation circuitry is electrically coupled to the current source and the PWM circuitry. The compensation circuitry includes a set of switching elements to adjust, for each corresponding member of the set of LEDs, the nominal amount of current and thereby provide to the PWM circuitry the adjusted amounts of current based on feedback representing one or both load impedance variations and parasitic conditions (LIVPC) and process, voltage and temperature (PVT) conditions.

公开(公告)号：US20200249713A1

公开(公告)日：2020-08-06

申请号：US16637268

申请日：2018-08-09

申请人： PLANAR SYSTEMS, INC.

发明人： Shahnad Nadershahi

IPC分类号： G06F1/04 ,  H03K3/027 ,  H03K3/84 ,  H03K3/017

摘要： A clock synthesis circuit and method provides for precision controlling and programming a selected number of clock pulses (or simply “clocks”) fitted within time periods between two consecutive pulses of a so-called system heartbeat (SHB) timing signal. The disclosed embodiments have applicability in light emitting diode (LED) display driver integrated circuits (ICs) and, more generally, digital circuits including computer processors, microcontrollers, logic devices such as field-programmable gate arrays (FP-GA), and other logic circuitry.

公开(公告)号：US11170698B2

公开(公告)日：2021-11-09

申请号：US16768038

申请日：2018-11-27

申请人： PLANAR SYSTEMS, INC.

发明人： Shahnad Nadershahi

IPC分类号： G09G3/20 ,  G09G3/32 ,  H03K7/08 ,  H05B45/46 ,  G09G3/36

摘要： Active discharge circuitry for fast discharging of charge on an LED display matrix includes a mechanism to effectuate circuit path switching so as to electrically connect a charged node to a discharge circuit for controlled discharging of unwanted charge until it reaches a desired (e.g., programmable) value. The active discharge circuitry includes a control circuit generating appropriate timing and digital control signals for starting and stopping (e.g., actuating a switch) the discharge activities. The disclosed techniques accommodate variations in channel-to-channel start times for mitigating ghosting effects that would otherwise be presented from the LED display matrix due to residual (i.e., unwanted) charges remaining electrically loaded on display elements via, for example, charged parasitic capacitance or other such transients, after a current driver of a specific channel has stopped driving.

公开(公告)号：US20180144676A1

公开(公告)日：2018-05-24

申请号：US15494150

申请日：2017-04-21

申请人： Planar Systems, Inc.

发明人： Shahnad Nadershahi

IPC分类号： G09G3/20 ,  G09G3/32

CPC分类号： G09G3/2055 ,  G09G3/2014 ,  G09G3/2044 ,  G09G3/32 ,  G09G2310/0272 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/064 ,  G09G2360/16

摘要： A circuit for driving at least one light emitting diode (LED) of a display based on a greyscale vector. The circuit includes brightness scale detection circuitry to determine a brightness value based on the greyscale vector and refresh cycle selection circuitry to output an indication of a subset of refresh cycles, referred to as dithered refresh cycles. The circuit also includes pulse width determination circuitry to define a pulse width based on the greyscale vector. Pulse adjustment control circuitry, for each dithered refresh cycle, determines a dithered pulse width by adjusting the pulse width by a width adjustment amount, and outputs a dithered pulse width modulation signal including a series of pulses including a pulse having the pulse width determined by the pulse width determination circuitry non-dithered refresh cycles and a pulse having the dithered pulse width for the dithered refresh cycles.

公开(公告)号：US20040208994A1

公开(公告)日：2004-10-21

申请号：US10642426

申请日：2003-08-15

申请人： Planar Systems, Inc.

发明人： Kari Harkonen ,  Mark Doczy ,  Teemu Lang ,  Nathan E. Baxter

IPC分类号： B32B009/00

CPC分类号： C23C16/32 ,  C23C16/45527 ,  C23C16/45531 ,  C23C16/4554 ,  Y10T428/12625

摘要： A process and system for depositing a carbon- and transition metal-containing thin film on a substrate involves placing a substrate within a reaction space and sequentially pulsing into the reaction space a transition metal chemical and an organometallic chemical. Following each chemical pulse, the reaction space is purged, and the pulse and purge sequence is repeated until a desired film thickness is obtained. A preferred deposition process uses atomic layer deposition techniques and may result in an electrically conductive thin carbide film having uniform thickness over a large substrate area and excellent adhesion and step coverage properties.

摘要翻译： 将含碳和过渡金属的薄膜沉积在衬底上的工艺和系统包括将衬底放置在反应空间内，并顺序地将过渡金属化学物质和有机金属化学物质脉冲入反应空间。 在每个化学脉冲之后，清除反应空间，重复脉冲和吹扫顺序，直到获得所需的膜厚度。 优选的沉积工艺使用原子层沉积技术，并且可以导致在大的衬底区域上具有均匀厚度的导电薄膜碳化物膜和优异的粘附性和阶梯覆盖性。

公开(公告)号：US20220108638A1

公开(公告)日：2022-04-07

申请号：US17449793

申请日：2021-10-01

申请人： PLANAR SYSTEMS, INC.

发明人： Eric Schuettke ,  Matt Smith ,  Neil Brashnyk

IPC分类号： G09F9/302 ,  F16M13/02 ,  G09F9/33

摘要： A system for mounting and positioning an array of panels, such as display modules of an electronic display device, includes a plurality of springs supported on a chassis that includes an array of cavities bordered by multiple ribs. Each of the panels is supported on front surfaces of the ribs to establish a Z position of the panel. Each panel is engaged by one or more of the springs to press together abutting edges of adjacent panels, which may reduce the appearance of seams between adjacent pairs of panels and accommodate thermal expansion. Magnetic elements retain each panel to the chassis in the Z direction while allowing the panels to float on the springs in the X and Y directions. Magnetically-actuated retention hooks allow the panels to be removed from the chassis without accessing a rear of the system.

公开(公告)号：US20160210886A1

公开(公告)日：2016-07-21

申请号：US14981495

申请日：2015-12-28

申请人： Planar Systems, Inc.

发明人： Neil Brashnyk ,  Todd Loewy ,  Eric Schuettke

IPC分类号： G09F9/302 ,  F16M13/02

CPC分类号： F16M13/022 ,  B25B23/12 ,  B25B27/14 ,  E05B47/004 ,  E05B47/0045 ,  F16B1/00 ,  F16B5/02 ,  F16B2001/0035 ,  F16K31/088 ,  F16M11/041 ,  F16M11/121 ,  F16M11/18 ,  F16M13/02 ,  F21V21/34 ,  G06F3/1446 ,  G09F9/3026 ,  G09F9/33 ,  G09G3/30 ,  H01F7/0252 ,  H05K5/0021 ,  H05K7/1427

摘要： A mounting and leveling system for an electronic image display device (10) formed of an array of multiple display sections (12) facilitates adjustment of the alignment of adjacent display sections to minimize visible seams between display sections. Some embodiments include one or more magnetically actuated fasteners (220) that facilitate front-access-only installation and adjustment without requiring access to the rear, top, bottom, or sides of the array. Tools (300, 410) for installation and removal of display modules (50) from a front side of the display device are also disclosed. Fasteners (220) for providing a hidden adjustable connection between first and second objects are also disclosed. One such fastener includes a screw (226) having a magnetic head (222) that presents a magnetic moment perpendicular to its axis of rotation (234).

摘要翻译： 用于由多个显示部分（12）阵列形成的电子图像显示装置（10）的安装和调平系统便于调整相邻显示部分的对准，以使显示部分之间的可见接缝最小化。 一些实施例包括一个或多个磁力驱动的紧固件（220），其便于前进入安装和调整，而不需要进入阵列的后部，顶部，底部或侧面。 还公开了用于从显示装置的前侧安装和移除显示模块（50）的工具（300,410）。 还公开了用于在第一和第二物体之间提供隐藏的可调节连接的紧固件（220）。 一个这种紧固件包括具有磁头（222）的螺钉（226），该磁头具有垂直于其旋转轴线（234）的磁矩。