公开(公告)号：US07106491B2

公开(公告)日：2006-09-12

申请号：US10331495

申请日：2002-12-30

Applicant: Thomas J. Meyer ,  Brett A. Mangrum ,  Mark F. Reed ,  James D. Huffman ,  Michael A. Mignardi ,  Wei-Yan Shih

Inventor： Thomas J. Meyer ,  Brett A. Mangrum ,  Mark F. Reed ,  James D. Huffman ,  Michael A. Mignardi ,  Wei-Yan Shih

IPC: G02B26/00 ,  G02B26/08 ,  G02B7/182 ,  H02K35/00 ,  B41J2/47

CPC classification number: G02B26/0841 ,  Y10S359/904

Abstract: A system and method of providing a micromirror pixel 400 that is highly resistant to bright failure states. The micromirror 400 uses an asymmetric yoke 402 to ensure the mirror is only attracted to the address electrode in one rotation direction. The landing mechanism on the other side of the torsion binge axis also is altered to allow the pixel to over rotate in the “off” direction. The over rotation ensures that light reflected by the mirror when in the off direction will miss the projection lens pupil, allowing the corresponding pixel to remain dark in both an operational and failed state.

公开(公告)号：US07011415B2

公开(公告)日：2006-03-14

申请号：US10298423

申请日：2002-11-18

Applicant: Anthony DiCarlo ,  Patrick I. Oden ,  Richard L. Knipe ,  Rabah Mezenner ,  James D. Huffman

Inventor： Anthony DiCarlo ,  Patrick I. Oden ,  Richard L. Knipe ,  Rabah Mezenner ,  James D. Huffman

IPC: G02B26/00

CPC classification number: B81B3/0035 ,  G02B26/0841 ,  Y10T428/22

Abstract: A micromirror array fabricated on a semiconductor substrate. The array is comprised of three operating layers. An addressing layer is fabricated on the substrate. A hinge layer is spaced above the addressing layer by an air gap. A mirror layer is spaced over the hinge layer by a second air gap. The hinge layer has a hinge under and attached to the mirror, the hinge permitting the mirror to tilt. The hinge layer further has spring tips under the mirror, which are attached to the addressing layer. These spring tips provide a stationary landing surface for the mirror.

Abstract translation: 制造在半导体衬底上的微镜阵列。 该阵列由三个操作层组成。 在衬底上制造寻址层。 铰链层通过气隙在寻址层上方间隔开。 镜层通过第二气隙在铰链层上间隔开。 铰链层具有在镜子下方并附接到铰链上的铰链，铰链允许镜子倾斜。 铰链层还具有在镜下的弹簧尖端，其附接到寻址层。 这些弹簧尖端为镜子提供了固定的着陆面。

公开(公告)号：US06483346B2

公开(公告)日：2002-11-19

申请号：US10056481

申请日：2002-01-25

Applicant: Keith E. Kunz ,  James D. Huffman

Inventor： Keith E. Kunz ,  James D. Huffman

IPC: H03K19094

CPC classification number: H03K19/00315

Abstract: Failsafe interface circuits are provided for an integrated circuit having a core logic section providing a signal to, or receiving a signal from, a bond pad connection. The interface circuits employ high voltage tolerant, extended drain devices in circuit arrangements which insure that the stress of a failsafe event is only exhibited by the extended drain devices. A failsafe event is defined as a bond pad voltage which exceeds the supply voltage of the integrated circuit plus the threshold voltage of the transistors within the integrated circuit. Both failsafe output driver circuit and failsafe receiver circuit embodiments are provided.

公开(公告)号：US06480433B2

公开(公告)日：2002-11-12

申请号：US09727604

申请日：2000-12-01

Applicant: James D. Huffman

Inventor： James D. Huffman

IPC: G11C700

CPC classification number: G11C29/38

Abstract: A differential amplifier circuit used to test the underlying DRAM memory cells in large area spatial light modulator (SLM) arrays by significantly increasing the cell capacitance to bitline capacitance ratio. Since for these SLM devices it is not desirable to sub-divide the DRAM array into smaller test arrays in order to reduce the bitline capacitance, this invention addresses the bitline capacitance problem by reading the differential voltage between two adjacent cells rather than the actual voltage of each cell. The approach is to load, precharge, and readout a checkerboard pattern and then repeat the process for an inverse checkerboard pattern. Cell outputs which have the same value for the two complimentary patterns indicate a cell failure. In this approach, the cell differential voltage readout is effectively doubled to approximately ±200 mVolts, providing 100% test coverage of these large area arrays. This results in an effective DRAM test procedure which is independent of bitline capacitance.

Abstract translation: 差分放大器电路用于通过将单元电容显着地增加到位线电容比来测试大面积空间光调制器（SLM）阵列中的底层DRAM存储单元。 由于对于这些SLM器件，不希望将DRAM阵列细分为较小的测试阵列以减少位线电容，本发明通过读取两个相邻单元之间的差分电压而不是实际的电压来解决位线电容问题 每个单元格 该方法是加载，预充电和读出棋盘图案，然后重复反棋盘图案的过程。 对于两个互补图案具有相同值的单元格输出指示单元故障。 在这种方法中，电池差分电压读数有效地加倍到大约±200 mVolts，可以提供这些大面积阵列的100％测试覆盖。 这导致有效的DRAM测试程序与位线电容无关。

公开(公告)号：US06414515B1

公开(公告)日：2002-07-02

申请号：US09713581

申请日：2000-11-15

Applicant: Keith E. Kunz ,  James D. Huffman

Inventor： Keith E. Kunz ,  James D. Huffman

IPC: H03K19094

CPC classification number: H03K19/00315

Abstract: Failsafe interface circuits are provided for an integrated circuit having a core logic section providing a signal to, or receiving a signal from, a bond pad connection. The interface circuits employ high voltage tolerant, extended drain devices in circuit arrangements which insure that the stress of a failsafe event is only exhibited by the extended drain devices. A failsafe event is defined as a bond pad voltage which exceeds the supply voltage of the integrated circuit plus the threshold voltage of the transistors within the integrated circuit. Both failsafe output driver circuit and failsafe receiver circuit embodiments are provided.

Abstract translation: 为具有提供信号或从接合焊盘连接接收信号的核心逻辑部分的集成电路提供故障安全接口电路。 接口电路采用电路布置中的高耐压扩展漏极器件，确保故障安全事件的应力仅由扩展的漏极器件表现出来。 故障安全事件被定义为超过集成电路的电源电压加上集成电路内的晶体管的阈值电压的接合焊盘电压。 提供故障保护输出驱动器电路和故障保护接收器电路实施例。

公开(公告)号：US06266178B1

公开(公告)日：2001-07-24

申请号：US09468595

申请日：1999-12-21

Applicant: James D. Huffman

Inventor： James D. Huffman

IPC: G02B2600

CPC classification number: G02B26/0841

Abstract: An improved memory cell (600) for use in a high-intensity light environment. The memory (600) comprises a substrate (616) capable of generating photocarriers when exposed to radiant energy, at least one transistor (602), at least one capacitor (604), and address node (610) electrically connecting the transistor (602) and the capacitor (604), and an active collector region (626). The active collector region (626) is fabricated in the substrate (616) in a position to allow the active collector region (626) to recombine photocarriers traveling through the substrate (616) thus preventing the photocarriers from reaching the address node (610).

Abstract translation: 一种用于高强度光环境的改进的存储单元（600）。 存储器（600）包括当暴露于辐射能时能够产生光载流子的衬底（616），至少一个晶体管（602），至少一个电容器（604）和电连接晶体管（602）的地址节点（610） 和电容器（604）以及有源集电极区域（626）。 在基板（616）中制造有源集电极区域（626），以允许有源集电极区域（626）复合穿过基板（616）的光载流子，从而防止光载波到达地址节点（610）。

公开(公告)号：US6028690A

公开(公告)日：2000-02-22

申请号：US197723

申请日：1998-11-23

Applicant: Duane E. Carter ,  James D. Huffman ,  Rodney D. Miller ,  Brian L. Ray ,  Robert E. Meier

Inventor： Duane E. Carter ,  James D. Huffman ,  Rodney D. Miller ,  Brian L. Ray ,  Robert E. Meier

IPC: G02B26/08 ,  H04N5/74

CPC classification number: G02B26/0841

Abstract: A micromirror array fabricated on a semiconductor substrate 708. The micromirrors in the micromirror array logically divided into an interior active region 704 which selectively modulates light striking the mirrors in the interior active region 704, and an exterior border region 702 for producing a dark border around the image produced by the interior active region 704. A gap between each mirror allows adjacent mirrors to rotate. The gap 712 between mirrors in the interior active region 704 of the array is larger than the gap 710 between at least some of the mirrors in the exterior border region 702. The smaller gap 710 in the exterior region 702 is enabled by restricting mirrors in the exterior region 702 to a single direction of rotation.

Abstract translation: 制造在半导体衬底708上的微镜阵列。微反射镜阵列中的微反射镜在逻辑上被分为内部有源区域704，该有源区域选择性地调制在内部有源区域704中的反射镜的入射光，以及外部边界区域702，用于产生围绕 由内部有源区域704产生的图像。每个反射镜之间的间隙允许相邻的反射镜旋转。 阵列的内部有源区域704中的反射镜之间的间隙712大于外部边界区域702中的至少一些反射镜之间的间隙710.外部区域702中的较小间隙710通过限制外部区域702中的反射镜来实现 外部区域702到单个旋转方向。

公开(公告)号：US08864287B2

公开(公告)日：2014-10-21

申请号：US13089542

申请日：2011-04-19

Applicant: James D. Huffman ,  Christopher N. Delametter ,  David P. Trauernicht

Inventor： James D. Huffman ,  Christopher N. Delametter ,  David P. Trauernicht

IPC: B41J2/045 ,  B41J29/38 ,  B41J2/04 ,  B41J2/05 ,  B41J2/14

CPC classification number: B41J2/14427 ,  B41J2/14201 ,  B41J2/14282 ,  B41J2/14314

Abstract: A method of ejecting a drop of fluid includes providing a fluid ejector. The fluid ejector includes a substrate, a MEMS transducing member, a compliant membrane, walls, and a nozzle. The substrate includes a cavity and a fluidic feed. A first portion of the MEMS transducing member is anchored to the substrate. A second portion of the MEMS transducing member extends over at least a portion of the cavity and is free to move relative to the cavity. The compliant membrane is positioned in contact with the MEMS transducing member. A first portion of the compliant membrane covers the MEMS transducing member, A second portion of the compliant membrane being anchored to the substrate. Walls define a chamber that is fluidically connected to the fluidic feed. At least the second portion of the MEMS transducing member is enclosed within the chamber. A quantity of fluid is supplied to the chamber through the fluidic feed. An electrical pulse is applied to the MEMS transducing member to eject a drop of fluid through the nozzle.

Abstract translation: 喷射液滴的方法包括提供流体喷射器。 流体喷射器包括基板，MEMS转换构件，柔性膜，壁和喷嘴。 衬底包括空腔和流体进料。 MEMS转换构件的第一部分被锚定到基底。 MEMS转换构件的第二部分在空腔的至少一部分上延伸并且相对于空腔自由移动。 柔性膜定位成与MEMS换能件接触。 柔性膜的第一部分覆盖MEMS转导构件。柔性膜的第二部分被锚固到基底上。 壁限定了流体连接到流体进料的室。 至少MEMS转换构件的第二部分被封闭在腔室内。 通过流体进料将一定量的流体供应到腔室。 电脉冲被施加到MEMS转换构件以通过喷嘴喷射一滴液体。

公开(公告)号：US08529021B2

公开(公告)日：2013-09-10

申请号：US13089594

申请日：2011-04-19

Applicant: Michael F. Baumer ,  James D. Huffman ,  Hrishikesh V. Panchawagh ,  Jeremy M. Grace ,  Yonglin Xie ,  Qing Yang ,  David P. Trauernicht ,  John A. Lebens

Inventor： Michael F. Baumer ,  James D. Huffman ,  Hrishikesh V. Panchawagh ,  Jeremy M. Grace ,  Yonglin Xie ,  Qing Yang ,  David P. Trauernicht ,  John A. Lebens

IPC: B41J2/04

CPC classification number: B41J2/03 ,  B41J2002/14346

Abstract: A method of continuously ejecting liquid includes providing a liquid ejection system that includes a substrate and an orifice plate affixed to the substrate. Portions of the substrate define a liquid chamber. The orifice plate includes a MEMS transducing member that extends over at least a portion of the liquid chamber. A compliant membrane is positioned in contact with the MEMS transducing member. The compliant membrane includes an orifice. Liquid is provided under a pressure sufficient to eject a continuous jet of the liquid through the orifice located in the compliant membrane of the orifice plate by a liquid supply. A drop of liquid is caused to break off from the liquid jet by selectively actuating the MEMS transducing member which causes a portion of the compliant membrane to be displaced relative to the liquid chamber.

Abstract translation: 一种连续喷射液体的方法包括提供一种液体喷射系统，其包括基板和固定在基板上的孔板。 衬底的一部分限定了液体室。 孔板包括在液体室的至少一部分上延伸的MEMS换能构件。 柔性膜定位成与MEMS换能件接触。 柔性膜包括孔口。 在足够的压力下提供液体，该压力通过位于孔板的柔顺膜中的孔通过液体供应喷射液体的连续射流。 通过选择性地致动MEMS转换构件使一滴液体从液体射流中脱离，这导致顺应性膜的一部分相对于液体腔移位。

公开(公告)号：US08523328B2

公开(公告)日：2013-09-03

申请号：US13089582

申请日：2011-04-19

Applicant: Carolyn R. Ellinger ,  James A. Katerberg ,  James D. Huffman

Inventor： Carolyn R. Ellinger ,  James A. Katerberg ,  James D. Huffman

IPC: B41J2/04

CPC classification number: B41J2/14 ,  B41J2002/14346 ,  B41J2002/14403 ,  B41J2002/14475 ,  B41J2202/12

Abstract: A method of ejecting liquid includes providing a liquid dispenser including a substrate and a diverter member. Portions of the substrate define a liquid supply channel and a liquid return channel. The diverter member includes a MEMS transducing member positioned in contact with a compliant membrane. The compliant membrane is anchored to the substrate such that the compliant membrane forms a portion of a wall of the liquid dispensing channel. A continuous flow of liquid is provided from a liquid supply through the liquid supply channel through the liquid dispensing channel through the liquid return channel and back to the liquid supply. The diverter member is selectively actuated to divert a portion of the liquid flowing through the liquid dispensing channel through outlet opening of the liquid dispensing channel when drop ejection is desired.

Abstract translation: 喷射液体的方法包括提供包括基底和转向构件的液体分配器。 衬底的一部分限定了液体供应通道和液体返回通道。 分流器构件包括定位成与顺应性膜接触的MEMS换能构件。 柔性膜被锚固到基底上，使得柔顺膜形成液体分配通道的壁的一部分。 从液体供应通道通过液体分配通道通过液体返回通道提供连续的液体流并返回到液体供应。 当需要液滴喷射时，分流器构件被选择性地致动以使流过液体分配通道的液体的一部分通过液体分配通道的出口打开。