Connector Terminology
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Glossary of Connector Terminology
| ASPECT RATIO (AR) | Ratio of ZEBRA® connector height to width. (Aspect ratio of 1.5 and higher is recommended to minimize the amount of force required to deflect the ZEBRA® connector.) |
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| BEZEL | Positioning device designed to surround the LCD edges while applying force to the ZEBRA® connector. Usually the decorative portion of the connector package. Plastic or metal cover placed over the LCD. |
| BRIDGE | Rib section on a ZEBRA® connector holder serving to reinforce the holder as well as minimize the length of individual ZEBRA® connection spans. |
| COMPRESSION SET | Amount by which a compressed ZEBRA® connector will not recover to its original height when compression is removed within the prescribed deflection limits. (typical maximum of 25%) |
| CONNECTOR PITCH | Center-to-center measurement of conductive layers. |
| CONTACT DENSITY | Number of conductive layers per inch. |
| DEFLECTION | Difference in original height versus compressed height of connector |
| GAP | Space on a PC board or LCD which does not contain contact pads. |
| HOLDER / RETAINER | Positioning device used to contain the ZEBRA® connector to assure proper alignment between two mating surfaces. |
| LCD PITCH AND/OR PC BOARD PITCH | Centerline-to-centerline distance between contact pads. |
| LIP WIDTH | Distance from outside edge of front glass to edge of back glass. |
| PAD WIDTH | Distance measured edge-to-edge of contact pad (CW). |
| PAD LENGTH | Distance measured end-to-end of contact pad (CL). |
| PAD MATERIALS | LCD contact pads are normally indium tin oxide. PC board contact pads may be gold, carbon-coated or soldercoated. Plating methods can result in significant variations in contact pad thickness, but should be kept as flat as possible. |
| REGISTRATION | Vertical alignment of contact pads between two mating surfaces. |
| SEPARATION | Distance between two mating surfaces. |
| STRESS RELAXATION | The function which relates to the loss of back stress of the compressed connector over time. Expressed as a percent of original stress. |
| TOLERANCE STACK-UP | Minimum and maximum dimensions of separation between LCD contacts and PC board contacts as determined by consideration of tolerance variations in flatness and parallelism of components. |