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    • 2. 发明申请
    • WAFER-LEVEL BURN-IN AND TEST CARTRIDGE AND METHODS
    • 水平测量和测试方法
    • WO0104643A3
    • 2002-04-18
    • PCT/US0019391
    • 2000-07-13
    • AEHR TEST SYSTEMSUHER FRANK OTTOANDBERG JOHN WILLIAMCARBONE MARK CHARLESRICHMOND DONALD PAUL II
    • UHER FRANK OTTOANDBERG JOHN WILLIAMCARBONE MARK CHARLESRICHMOND DONALD PAUL II
    • G01R31/26G01R1/04G01R1/06G01R31/28H01L21/66H05K3/00G01R31/316
    • G01R1/0491G01R31/2806G01R31/2831G01R31/2863G01R31/2865G01R31/2867G01R31/2886H05K3/4691
    • A cartridge (10) includes a chuck plate (12) for receiving a wafer (74) and a probe plate (14) for establishing electrical contact with the wafer. In use, a mechanical connecting device (90) locks the chuck plate and the probe plate fixed relative to one another to maintain alignment of the wafer and the probe plate. Preferably, electrical contact with the wafer is established using a probe card (50) that is movably mounted to the probe plate by means of a plurality of leaf springs (52). The mechanical connecting device is preferably a kinematic coupling including a male connector (94) and first and second opposed jaws (122, 124). Each of the jaws is pivotable from a retracted position in which the male connector can be inserted between the jaws and an engaging position in which the jaws prevent withdrawal of the male connector from between the jaws. The male connector is movable between an extended and a retracted position, and is biased towards the retracted position. This provides a positive clamping force that pulls the chuck and probe plates together when the mechanical connecting device is engaged. To leaf a wafer into the cartridge, the wafer is placed on the chuck plate, the probe plate is aligned with the wafer, and the chuck plate and the probe plate are locked together. The cartridge can then be removed from the alignment device and placed in a burn-in or test chamber that does not itself require means for aligning the wafer or for providing a probe actuation force.
    • 盒(10)包括用于接收晶片(74)的卡盘板(12)和用于与晶片建立电接触的探针板(14)。 在使用中,机械连接装置(90)相对于彼此固定的卡盘板和探针板锁定,以保持晶片和探针板的对准。 优选地,使用通过多个​​板簧(52)可移动地安装到探针板的探针卡(50)来建立与晶片的电接触。 机械连接装置优选地是包括阳连接器(94)和第一和第二相对的夹爪(122,124)的运动耦合。 每个夹爪可从缩回位置枢转,在该缩回位置中,阳连接器可以插入在夹爪之间,并且夹爪防止凸形连接器从夹爪之间拔出。 阳连接器可在延伸位置和缩回位置之间移动,并且朝着缩回位置偏置。 这提供了当夹持机械连接装置时将卡盘和探针板拉到一起的正夹紧力。 为了将晶片放入盒中,将晶片放置在卡盘上,探针板与晶片对准,并将卡盘板和探针板锁定在一起。 然后可以将该盒从对准装置移除并放置在本身不需要用于对准晶片或提供探针致动力的装置的老化或测试室中。
    • 5. 发明申请
    • WAFER LEVEL BURN-IN AND ELECTRICAL TEST SYSTEM AND METHOD
    • 晶片级烧蚀和电测试系统和方法
    • WO0104641A3
    • 2001-12-06
    • PCT/US0019482
    • 2000-07-13
    • AEHR TEST SYSTEMS INCRICHMOND DONALD PAUL IIHOANG JOHN DINHLOBACZ JERZY
    • RICHMOND DONALD PAUL IIHOANG JOHN DINHLOBACZ JERZY
    • G01R31/26G01R31/28G01R31/30H01L21/66H05K3/00G01R31/316
    • G01R31/2868G01R31/2831G01R31/2874G01R31/2886H05K3/4691
    • A burn-in and electrical test system (20) includes a temperature controlled zone (22) and a cool zone (24) separated by a transition zone (25. The temperature controlled zone (22) is configured to receive a plurality of wafer cartridges (26) and connect the cartridges (26) to test electronics (28) and power electronics (30), which are mounted in the cool zone (24). Each of the wafer cartridges (26) contains a semiconductor wafer incorporating a plurality of integrated circuits. The test electronics (28) consists of a pattern generator PCB (100) and a signal driver and fault analysis PCB (102) connected together by a parallel bus (104). The pattern generator PCB (100) and the fault analysis PCB (102) are connected to a rigid signal probe PCB (104) in cartridge (26) to provide a straight through signal path. The probe PCB (104) is rigid in order to allow close control of capacitance between each signal line and a backplane, thus providing impedance controlled interconnections between a semiconductor wafer under test and the test electronics (28). The power distribution system (30) is connected to a probe power PCB (106) in the cartridge (26). The probe power PCB (106) has at least a bendable portion in order to allow it to be positioned closely adjacent to and parallel with the rigid probe PCB (104), yet extend a substantial distance away from the probe PCB (106) at its interconnection (109).
    • 老化和电气测试系统(20)包括由过渡区(25)分隔的温度控制区(22)和冷却区(24)。温度控制区(22)被配置为接收多个晶片盒 (26),并将盒(26)连接到安装在冷区(24)中的测试电子器件(28)和功率电子器件(30)。每个晶片盒(26)包含半导体晶片, 测试电子装置28由图案发生器PCB 100和由并行总线104连接在一起的信号驱动器和故障分析PCB 102组成,图案发生器PCB 100和故障分析 PCB(102)连接到盒(26)中的刚性信号探针PCB(104)以提供直通信号路径。探针PCB(104)是刚性的,以允许对每个信号线和 底板,从而提供了阻抗控制之间的互连 被测试的半导体晶圆和测试电子器件(28)。 配电系统(30)连接到盒(26)中的探针电源PCB(106)。 探针电源PCB(106)具有至少一个可弯曲部分,以便允许其被定位成紧密邻近且平行于刚性探针PCB(104),但在其探针PCB(106)处远离其探头PCB(106)延伸相当大的距离 互连(109)。
    • 6. 发明申请
    • WAFER LEVEL BURN-IN AND TEST THERMAL CHUCK AND METHOD
    • WAFER LEVEL BURN-IN和TERM THERM CHUCK AND METHOD
    • WO0019775B1
    • 2000-06-15
    • PCT/US9921885
    • 1999-09-20
    • AEHR TEST SYSTEMS
    • ANDBERG JOHN W
    • G01R31/26G01R31/30H01L21/00H01L21/66H01L21/683H05B3/68B23B5/22C23C16/00H01T23/00H05B3/44
    • H01L21/67248H01L21/67103
    • A thermal chuck or heat sink (10) has a lower surface (12) covered with fins (14) parallel to air flow (16), to increase the surface area and promote heat transfer. A pair of slots (32) near pedestal (20) (along the fins) effectively lowers the conductivity of the metal in the direction across the fins. Heat flowing through this region of lowered conductivity experiences a greater temperature drop. This raises the temperature at the adjacent parts of the top surface, and (for properly sized slots) results in circular isotherms. The circular isotherms are turned into a nearly isothermal surface by a precisely dimensioned groove (36) parallel to the top surface (22), extending around the circumference of the pedestal (20). Heat flowing into the outer regions of the circular surface (22) is forced to travel radially inward, thus raising the edge temperature (which would naturally be lower than the center). For properly sized slots (32) and groove (36), it is possible to achieve a nearly constant temperature top surface (22).
    • 热卡盘或散热器(10)具有覆盖有与空气流(16)平行的翅片(14)的下表面(12),以增加表面积并促进热传递。 靠近基座(20)(沿着翅片)的一对槽(32)有效地降低金属沿着翅片的方向的导电性。 流过该区域的热量降低的热量经历较大的温度下降。 这提高了顶部表面相邻部分的温度,并且(对于适当尺寸的狭槽)导致圆形等温线。 圆形等温线通过平行于顶表面(22)的精确尺寸的凹槽(36)变成几乎等温的表面,围绕基座(20)的圆周延伸。 流入圆形表面(22)的外部区域的热量被迫径向向内行进,从而提高边缘温度(这自然会低于中心点)。 对于适当尺寸的槽(32)和槽(36),可以实现几乎恒定的温度顶表面(22)。