Invention Grant
US07755376B2 Camera based pin grid array (PGA) inspection system with pin base mask and low angle lighting 失效
基于摄像头的针脚阵列(PGA)检测系统,具有针底座和低角度照明

  • Patent Title: Camera based pin grid array (PGA) inspection system with pin base mask and low angle lighting
  • Patent Title (中): 基于摄像头的针脚阵列(PGA)检测系统,具有针底座和低角度照明
  • Application No.: US11545460
    Application Date: 2006-10-11
  • Publication No.: US07755376B2
    Publication Date: 2010-07-13
  • Inventor: Kexiang Ken Ding
  • Applicant: Kexiang Ken Ding
  • Applicant Address: US CA Poway
  • Assignee: Delta Design, Inc.
  • Current Assignee: Delta Design, Inc.
  • Current Assignee Address: US CA Poway
  • Agency: Foley & Lardner LLP
  • Main IPC: G01R31/02
  • IPC: G01R31/02
Camera based pin grid array (PGA) inspection system with pin base mask and low angle lighting
Abstract:
An inspection system, for inspecting pin grid arrays on integrated circuit devices includes a pin base mask configured to receive a device having a pin grid array. A dark-field, low-angle lighting system emits light onto the pin grid array. The pin base mask and low-angle lighting system provide for a clear and definitive image of the pin grid array. A camera captures the image of the pin grid array. A processor, coupled to the camera, analyzes the images captured by the camera. Based on the captured image, the processor determines whether any pins on the pin grid array are bent or missing, or whether there are extra pins present.
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