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1. 发明授权

US5666417A Fluorescence authentication reader with coaxial optics 失效
标题翻译：具有同轴光学的荧光认证读取器
公开(公告)号：US5666417A
公开(公告)日：1997-09-09
申请号：US694032
申请日：1996-08-08
申请人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , Donald L. Wray
发明人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , Donald L. Wray
IPC分类号： G02B6/38 , G06K7/12 , G07D7/12 , H04L9/00
CPC分类号： G07D7/121 , G06K7/12 , G07D7/122 , G02B6/3839 , G02B6/3861
摘要： A multiple-reader system for authentication of articles uses a first reader (400) which employs predetermined modulated illuminating light (20) and a multiplicity of discriminating variables, such as wavelengths (110), amplitudes (120), and time delays (140) relative to the modulated illuminating light (20) to characterize fluorescent light (70) detected from fluorescent indicia on the articles. The fluorescent indicia may also incorporate spatial distributions such as bar codes as discriminating features. Additional readers (410 and 420), which may be readers of fluorescent marks and/or readers of other indicia, are synchronized with the fluorescence reader by timing signals. The discriminating features may be re-programmed by the user of the authentication system. Thus the discriminating features define a user-determined and programmable encryption of the articles' authentic identity. The outputs provided by individual readers (400, 410 and 420) are combined by a computer (85) programmed to produce the authentication result. The fluorescence authentication reader includes integration and synchronization of multiple readers of various types, an improved coaxial optics subsystem (450), and electronic circuitry with improved time-base stability, which cooperate in enhancing signal/noise ratio. The resultant stable triggering of the authentication output of the individual fluorescence reader, combined with time synchronization of the individual fluorescence reader with other readers, provides a reliable integrated multi-reader authentication system.
摘要翻译：用于物品认证的多读取器系统使用采用预定调制照明光（20）的第一读取器（400）和诸如波长（110），幅度（120）和时间延迟（140）的多个鉴别变量，相对于经调制的照明光（20），以表征从物品上的荧光标记检测到的荧光（70）。荧光标记还可以包括诸如条形码之类的空间分布作为鉴别特征。可以是荧光标记的读取器和/或其他标记的读取器的其他读取器（410和420）通过定时信号与荧光读取器同步。鉴别特征可由认证系统的用户重新编程。因此，识别特征定义了用户确定的和可编程的加密文章的真实身份。由各个读取器（400,410和420）提供的输出由编程为产生认证结果的计算机（85）组合。荧光认证读取器包括各种类型的多个读取器的集成和同步，改进的同轴光学子系统（450）和具有改进的时基稳定性的电子电路，其在增强信号/噪声比方面协作。结果，单个荧光读取器的认证输出的稳定触发以及单独荧光读取器与其他读取器的时间同步提供了可靠的集成多读取器认证系统。

2. 发明授权

US5418855A Authentication system and method 失效
公开(公告)号：US5418855A
公开(公告)日：1995-05-23
申请号：US127250
申请日：1993-09-27
申请人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , Donald L. Wray
发明人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , Donald L. Wray
IPC分类号： G06K7/12 , G07D7/12 , H04L9/00
CPC分类号： G06K7/12 , G07D7/121 , G07D7/122
摘要： A system for authentication of articles uses a multiplicity of discriminating variables to characterize light detected from the articles after predetermined illumination. Articles are tested which have been marked with substances such as dye or ink that fluoresce in a region of the optical spectrum when illuminated with light in another region of the spectrum, such as the ultraviolet region. The authentication system illuminates the articles with light modulated at a frequency of more than about 50 kHz, and secondary fluorescent light returned from the articles is synchronously detected. A programmable microcomputer digitizes the synchronously detected signal and analyzes it to compare the signal with predetermined standard digital signals. The standard signals incorporate a number of discriminating features, for example the fluorescent light's wavelengths, amplitudes, and time delays relative to the modulated illuminating light. The standard signals may also incorporate spatial distributions such as bar codes as discriminating features. The discriminating features may be re-programmed by the user of the authentication system. Thus the discriminating features define a user-determined encryption of the articles' authentic identity. For applications in which the articles are stationary, the authentication system can include scanning means to scan the articles with modulated light. In other applications, the articles move past the authentication system optics and do not require scanning. In quality control applications, predetermined fluorescent substances are added in small percentages to tag other materials, which may be non-fluorescent, and the authentication system is used to provide statistical information about the presence and quantities of the tagged materials. The authentication system can include readers of visible bar codes, readers of magnetic stripe codes, or other readers of coded indicia, in addition to a reader of indicia made with fluorescent substances. Security documents having multiple fields, with at least one field bearing fluorescent indicia, make use of the authentication system and methods.

3. 发明授权

US5574790A Fluorescence authentication reader with coaxial optics 失效
标题翻译：具有同轴光学的荧光认证读取器
公开(公告)号：US5574790A
公开(公告)日：1996-11-12
申请号：US575729
申请日：1995-12-18
申请人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , David Silverglate , Donald L. Wray
发明人： Louis H. Liang , Daniel A. Marinello , William J. Ryan , David Silverglate , Donald L. Wray
IPC分类号： G02B6/38 , G06K7/12 , G07D7/12 , H04L9/00
CPC分类号： G07D7/121 , G06K7/12 , G07D7/122 , G02B6/3839 , G02B6/3861
摘要： A multiple-reader system for authentication of articles uses a first reader (400) which employs predetermined modulated illuminating light (20) and a multiplicity of discriminating variables, such as wavelengths (110), amplitudes (120), and time delays (140) relative to the modulated illuminating light (20) to characterize fluorescent light (70) detected from fluorescent indicia on the articles. The fluorescent indicia may also incorporate spatial distributions such as bar codes as discriminating features. Additional readers (410 and 420), which may be readers of fluorescent marks and/or readers of other indicia, are synchronized with the fluorescence reader by timing signals. The discriminating features may be re-programmed by the user of the authentication system. Thus the discriminating features define a user-determined and programmable encryption of the articles' authentic identity. The outputs provided by individual readers (400, 410 and 420) are combined by a computer (85) programmed to produce the authentication result. The fluorescence authentication reader includes integration and synchronization of multiple readers of various types, an improved coaxial optics subsystem (450), and electronic circuitry with improved time-base stability, which cooperate in enhancing signal/noise ratio. The resultant stable triggering of the authentication output of the individual fluorescence reader, combined with time synchronization of the individual fluorescence reader with other readers, provides a reliable integrated multi-reader authentication system.
摘要翻译：用于物品认证的多读取器系统使用采用预定调制照明光（20）的第一读取器（400）和诸如波长（110），幅度（120）和时间延迟（140）的多个鉴别变量，相对于经调制的照明光（20），以表征从物品上的荧光标记检测到的荧光（70）。荧光标记还可以包括诸如条形码之类的空间分布作为鉴别特征。可以是荧光标记的读取器和/或其他标记的读取器的其他读取器（410和420）通过定时信号与荧光读取器同步。鉴别特征可由认证系统的用户重新编程。因此，识别特征定义了用户确定的和可编程的加密文章的真实身份。由各个读取器（400,410和420）提供的输出由编程为产生认证结果的计算机（85）组合。荧光认证读取器包括各种类型的多个读取器的集成和同步，改进的同轴光学子系统（450）和具有改进的时基稳定性的电子电路，其在增强信号/噪声比方面协作。结果，单个荧光读取器的认证输出的稳定触发以及单独荧光读取器与其他读取器的时间同步提供了可靠的集成多读取器认证系统。

4. 发明授权

US5548106A Methods and apparatus for authenticating data storage articles 失效
标题翻译：用于认证数据存储物品的方法和装置
公开(公告)号：US5548106A
公开(公告)日：1996-08-20
申请号：US298387
申请日：1994-08-30
申请人： Louis H. Liang , Daniel A. Marinello , William J. Ryan
发明人： Louis H. Liang , Daniel A. Marinello , William J. Ryan
IPC分类号： G06K7/10 , G06K7/12 , G06K19/14 , G06K7/14
CPC分类号： G06K7/10851 , G06K19/14 , G06K7/10861 , G06K7/12
摘要： Accessory apparatus for authenticating articles is used in conjunction with existing readers or scanners of articles bearing stored data, such as credit cards or identification cards. The accessory apparatus is disposed before, after, on, under, inside, or adjacent to existing reader apparatus, to have a view of the article whose data is to be read. Information in addition to the stored data is coded on the article in non-visible indicia and is detected by the accessory authenticating apparatus. This coded additional information may be related to identification data stored in the article by the article's normal storage mechanism, such as a magnetic stripe or an embedded memory IC chip. The additional information may be coded in various combinations of predetermined characteristics of light emitted by the article to be authenticated when the article is irradiated with non-visible light from the accessory apparatus. The code combinations are preferably complex combinations of the various radiation characteristics. The article is irradiated at a high enough frequency (above 10,000 Hz modulation) for rapid determination of authenticity, and for reading and decoding standard bar codes. Visible and/or audible indicators alert a user when the authentication process detects an invalid card. With certain arrangements, an invalid card may be blocked from being read by the existing reader or scanner. The accessory apparatus may be connected to interrupt the normal communication channel of the existing reader or scanner with which it is used, when an article fails to be authenticated. The accessory apparatus may be used as an adjunct to existing readers or scanners of information on such cards or other articles, to perform authentication functions without replacing or obsoleting such existing readers or scanners.
摘要翻译：用于认证物品的附件装置与现有的读取器或携带存储数据的物品（例如信用卡或身份证件）的扫描器结合使用。该附属装置设置在现有的读取装置之前，之后，之下，内部或附近，以具有要读取其数据的物品的视图。除了存储的数据之外的信息被编码在不可见标记上的物品上，并由附件认证装置检测。这种编码的附加信息可能与物品通常存储机构（例如磁条或嵌入式存储器IC芯片）存储在物品中的识别数据有关。当用来自附件装置的不可见光照射物品时，附加信息可以以由要认证的物品发射的光的预定特性的各种组合进行编码。代码组合优选地是各种辐射特性的复合组合。以足够高的频率（高于10,000Hz调制）照射物品，以快速确定真实性，以及用于读取和解码标准条形码。当认证过程检测到无效卡时，可见和/或听觉指示器提醒用户。通过某些安排，可能会阻止无效的卡被现有的读取器或扫描仪读取。可以连接附件装置，以便当物品未被认证时，中断正在使用的读取器或扫描器的正常通信信道。附件装置可以用作现有读取器或扫描器上的这种卡或其它物品上的信息的附件，以执行认证功能而不替换或废弃现有的读取器或扫描器。

5. 发明授权

US5867586A Apparatus and methods for fluorescent imaging and optical character reading 失效
公开(公告)号：US5867586A
公开(公告)日：1999-02-02
申请号：US863846
申请日：1997-05-27
申请人： Louis H. Liang
发明人： Louis H. Liang
IPC分类号： G06K7/12 , G07D7/12 , G07D7/20 , G07F7/08 , G06K9/00
CPC分类号： G06K7/12 , B41M3/144 , G07D7/12 , G07D7/20 , G07F7/086
摘要： An authentication system combines a source of ultraviolet light (and optionally a scanning mechanism) with apparatus for capturing and recognizing either graphic images or characters or both, where the graphic images and/or characters have been previously made with fluorescent substances that may be invisible under ordinary visible light, but are rendered detectable by the ultraviolet light. As in conventional optical character recognition (OCR), the characters may be conventional alphanumeric characters readable by human readers once they are made visible. The authentication system has a housing enclosing its optical path, a source of UV light, a detector for detecting graphic images or characters, conversion of the detector signal to digital form, a memory storing predetermined indicia, recognition logic, and indicating means. The system may also include a scanning mechanism and optical filters to select predetermined wavelengths of fluorescent light. The detector may be capable of detecting both fluorescent images and normal visible images, and the authentication system may incorporate switching mechanisms to allow multiplexed acquisition of fluorescent and normally visible images. The authentication system can operate in conjunction with a process for marking articles with indicia selected from a predetermined set of graphic images and characters readable by optical character recognition and/or by image comparison. That process can include printing fluorescent graphic images or characters in registration with (or with predetermined offset from) visible images or characters or indicia printed with substances fluorescent at different wavelengths. The recognition logic of the authentication system can include comparison of fluorescent and visible images or two different fluorescent images with each other. Pairs of indicia to be recognized and/or compared may be arranged to constitute a stereogram or other arrangement for first-order authentication by a human observer.

6. 发明授权

US5386141A Leadframe having one or more power/ground planes without vias 失效
标题翻译：具有一个或多个没有通孔的电源/接地平面的引线框架
公开(公告)号：US5386141A
公开(公告)日：1995-01-31
申请号：US860810
申请日：1992-03-31
申请人： Louis H. Liang , Tsing-Chow Wang
发明人： Louis H. Liang , Tsing-Chow Wang
IPC分类号： H01L23/12 , H01L23/495 , H01L23/50 , H01L23/48
CPC分类号： H01L24/32 , H01L23/49503 , H01L23/49531 , H01L23/49551 , H01L24/49 , H01L2224/05554 , H01L2224/48091 , H01L2224/48247 , H01L2224/48253 , H01L2224/48257 , H01L2224/4911 , H01L2224/49171 , H01L2224/73265 , H01L24/48 , H01L2924/00014 , H01L2924/01004 , H01L2924/01006 , H01L2924/01014 , H01L2924/01015 , H01L2924/01029 , H01L2924/01033 , H01L2924/01057 , H01L2924/01079 , H01L2924/01082 , H01L2924/07802 , H01L2924/14 , H01L2924/15787 , H01L2924/181 , H01L2924/19107 , H01L2924/30107 , H01L2924/3011
摘要： Power and ground connections are provided using or more conductive layers provided in an integrated-circuit package design. A leadframe has either a tape assembly or a heat-conducting dielectric ceramic substrate attached to the die-attach paddle of the leadframe and one or more conductive planes are formed on the top surface of the tape assembly or the ceramic substrate. The tape assembly includes a conductive metal layer, a polyimide layer, and an adhesive layer. The metal layer on the tape or ceramic substrate and the metal die-attach pad of the leadframe are used as low inductance power planes providing connections to the integrated-circuit. No vias are used. Use of a metal die-attach paddle for the leadframe is optional when a ceramic substrate is used.
摘要翻译：使用集成电路封装设计中提供的或更多导电层提供电源和接地连接。引线框架具有附接到引线框架的管芯附接焊盘的带组件或导热电介质陶瓷衬底，并且在带组件或陶瓷衬底的顶表面上形成一个或多个导电平面。带组件包括导电金属层，聚酰亚胺层和粘合剂层。磁带或陶瓷基板上的金属层和引线框架的金属管芯安装焊盘用作提供与集成电路连接的低电感功率平面。没有通孔。当使用陶瓷衬底时，可以选择使用金属管芯连接板作为引线框架。

7. 发明授权

US5171712A Method of constructing termination electrodes on yielded semiconductor die by visibly aligning the die pads through a transparent substrate 失效
标题翻译：通过透明基板可靠地对准芯片焊盘，在成品半导体芯片上构造终端电极的方法
公开(公告)号：US5171712A
公开(公告)日：1992-12-15
申请号：US811755
申请日：1991-12-20
申请人： Tsing-Chow Wang , Louis H. Liang
发明人： Tsing-Chow Wang , Louis H. Liang
IPC分类号： H01L21/60 , H01L21/68 , H01L23/485
CPC分类号： H01L24/13 , H01L21/6835 , H01L24/11 , H01L2224/11003 , H01L2224/13099 , H01L2224/13144 , H01L2924/0001 , H01L2924/01013 , H01L2924/01022 , H01L2924/01024 , H01L2924/01027 , H01L2924/01029 , H01L2924/01033 , H01L2924/01046 , H01L2924/01047 , H01L2924/01074 , H01L2924/01078 , H01L2924/01079 , H01L2924/01082 , H01L2924/014 , H01L2924/14 , Y10S438/951 , Y10S438/975
摘要： A process for fabricating conductive bumps on the bond pads of yielded good die includes forming a transparent structure upon which a masking layer is formed, aligning yielded good die and attaching them to the masking layer, and attaching a backing material to the backside of the die for mechanical support. The transparent structure is then removed and fabrication of the bumps continued on the bond pads of the good die by conventional means.
摘要翻译：用于在所得到的良好裸片的接合焊盘上制造导电凸块的工艺包括形成透明结构，在其上形成掩模层，对准产生的良好裸片并将其附着到掩模层，以及将背衬材料附接到模具的背面用于机械支持。然后去除透明结构，并通过常规方法在良好裸片的接合焊盘上继续制造凸块。

8. 发明授权

US06373965B1 Apparatus and methods for authentication using partially fluorescent graphic images and OCR characters 有权
公开(公告)号：US06373965B1
公开(公告)日：2002-04-16
申请号：US09428348
申请日：1999-10-27
申请人： Louis H. Liang
发明人： Louis H. Liang
IPC分类号： G06K900
CPC分类号： G07F7/086 , B41M1/28 , B41M1/30 , B41M1/34 , B41M3/144 , G06K7/12 , G07D7/0043 , G07D7/12 , G07D7/128 , G07D7/20 , G07D7/206
摘要： An authentication system combines a source of ultraviolet light (and optionally a scanning mechanism) with apparatus for capturing and recognizing either graphic images or characters or both, where the graphic images and/or characters have been previously made with fluorescent substances that may be invisible under ordinary visible light, but are rendered detectable by the ultraviolet light. As in conventional optical character recognition (OCR), the characters may be conventional alphanumeric characters readable by human readers once they are made visible. The authentication system has a housing enclosing its optical path, a source of UV light, a detector for detecting graphic images or characters, conversion of the detector signal to digital form, a memory storing predetermined indicia, recognition logic, and indicating means. The system may also include a scanning mechanism and optical filters to select predetermined wavelengths of fluorescent light. The detector may be capable of detecting both fluorescent images and normal visible images, and the authentication system may incorporate switching mechanisms to allow multiplexed acquisition of fluorescent and normally visible images. The authentication system can operate in conjunction with a process for marking articles with indicia selected from a predetermined set of graphic images and characters readable by optical character recognition and/or by image comparison. That process can include printing fluorescent graphic images or characters in registration with (or with predetermined offset from) visible images or characters or indicia printed with substances fluorescent at different wavelengths. The recognition logic of the authentication system can include comparison of fluorescent and visible images or two different fluorescent images with each other. Pairs of indicia to be recognized and/or compared may be arranged to constitute a stereogram or other arrangement for first-order authentication by a human observer.

9. 发明授权

US5905300A Reinforced leadframe to substrate attachment 失效
标题翻译：加强引线框架到基板连接
公开(公告)号：US5905300A
公开(公告)日：1999-05-18
申请号：US885322
申请日：1997-06-30
申请人： Louis H. Liang
发明人： Louis H. Liang
IPC分类号： H01L23/495 , H01L23/06 , H01L23/48 , H01L23/498
CPC分类号： H01L23/49558 , H01L2224/05554 , H01L2224/48091 , H01L2224/48247 , H01L2224/49171 , H01L24/48 , H01L24/49 , H01L2924/00014 , H01L2924/14
摘要： A method and apparatus for a reinforced leadframe to substrate attachment in a semiconductor assembly. In one embodiment, a printed circuit board having a plurality of electrically coupled electrical contact regions and wire bond areas formed thereon has a leadframe attached thereto such that each of the bonding fingers of the leadframe is coupled to a respective electrical contact region on the printed circuit board. A ribbon of B-staged epoxy is disposed on the leadframe such that the leadframe is disposed between the ribbon of B-staged epoxy and the printed circuit board. An integrated-circuit die is mounted on the printed circuit board with the bonding fingers of the leadframe peripherally surrounding the integrated circuit die. The bonding pads on the integrated-circuit die are electrically coupled to respective wire bond areas on the printed circuit board. By placing the ribbon of B-staged epoxy over the leadframe, the connection between each bonding finger of the leadframe and the respective electrical contact region is reinforced. Thus, the present claimed invention reduces separation between each bonding finger of the leadframe and the respective electrical contact region of the printed circuit board thereby providing improved reliability and yield in such semiconductor assemblies.
摘要翻译：一种用于半导体组件中的加强引线框架与衬底连接的方法和装置。在一个实施例中，具有形成在其上的多个电耦合电接触区域和引线接合区域的印刷电路板具有附接到其上的引线框架，使得引线框架的每个接合指状部分连接到印刷电路上的相应电接触区域板。 B级环氧树脂带设置在引线框架上，使得引线框布置在B阶环氧树脂的带状物和印刷电路板之间。集成电路管芯安装在印刷电路板上，引线框的接合指环围绕集成电路管芯。集成电路管芯上的接合焊盘电耦合到印刷电路板上的相应引线接合区域。通过将B级环氧树脂的色带放置在引线框架上，引导框架的每个粘接指与相应的电接触区域之间的连接得到加强。因此，本发明要求保护的发明减少了引线框架的每个接合指状物和印刷电路板的相应电接触区域之间的分离，从而在这种半导体组件中提供了改进的可靠性和良率。

10. 发明授权

US5442234A Apparatus for thermally coupling a heat sink to a leadframe 失效
标题翻译：用于将散热器热耦合到引线框架的装置
公开(公告)号：US5442234A
公开(公告)日：1995-08-15
申请号：US232573
申请日：1994-04-21
申请人： Louis H. Liang
发明人： Louis H. Liang
IPC分类号： H01L23/36 , H01L23/40 , H01L23/433 , H01L23/495 , H01L23/50 , H01L33/00 , H01L23/48 , H01L27/52 , H01L29/44 , H01L29/60
CPC分类号： H01L23/4334 , H01L23/49568 , H01L2224/32245 , H01L2224/48091 , H01L2224/48247 , H01L2224/73265 , H01L24/48 , H01L2924/00014 , H01L2924/01004 , H01L2924/01014 , H01L2924/14 , H01L2924/15747 , H01L2924/181 , Y10T29/49121
摘要： A molded plastic package for an integrated-circuit die includes a lead frame having a central die-attach paddle. One side of the die-attach paddle has an integrated-circuit die fixed thereto. A heat sink member is resiliently fixed to the other side of the die-attach paddle using a layer of viscous thermal grease between the heat sink member and the other side of the die-attach paddle. One or more holes are formed in the lead frame and are engaged by corresponding studs on the heat sink. The stud has a shoulder portion which engages the lead frame to prevent the stud from further passing through the hole in the lead frame.
摘要翻译：用于集成电路管芯的模制塑料封装包括具有中心管芯附接焊盘的引线框架。管芯附接板的一侧具有固定到其上的集成电路管芯。散热构件使用在散热构件和芯片附接板的另一侧之间的粘性导热油脂层弹性地固定到模片附接桨的另一侧。在引线框架中形成一个或多个孔，并且与散热片上的对应的螺柱相啮合。螺柱具有接合引线框架的肩部，以防止螺柱进一步穿过引线框架中的孔。

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