Protrusion bump pads for bond-on-trace processing
First Claim
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1. An apparatus, comprising:
- a dielectric layer;
a conductive trace in the dielectric layer, wherein the conductive trace comprises;
a conductive line portion having a substantially uniform width in a top-down view of the apparatus; and
a conductive trace pad portion connected to the conductive line portion, wherein the conductive trace pad portion is wider than the conductive line portion in the top-down view of the apparatus; and
a protrusion bump pad disposed on the conductive trace pad portion, wherein a surface of the protrusion bump pad opposite the conductive trace is substantially level, wherein the protrusion bump pad at least partially extends over the dielectric layer, wherein the protrusion bump pad comprises a first lengthwise axis and a widthwise axis, and wherein a ratio of a first dimension of the first lengthwise axis to a second dimension of the widthwise axis is about 0.8 to about 1.2.
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Abstract
An embodiment apparatus includes a dielectric layer in a die, a conductive trace in the dielectric layer, and a protrusion bump pad on the conductive trace. The protrusion bump pad at least partially extends over the dielectric layer, and the protrusion bump pad includes a lengthwise axis and a widthwise axis. A ratio of a first dimension of the lengthwise axis to a second dimension of the widthwise axis is about 0.8 to about 1.2.
28 Citations
20 Claims
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1. An apparatus, comprising:
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a dielectric layer; a conductive trace in the dielectric layer, wherein the conductive trace comprises; a conductive line portion having a substantially uniform width in a top-down view of the apparatus; and a conductive trace pad portion connected to the conductive line portion, wherein the conductive trace pad portion is wider than the conductive line portion in the top-down view of the apparatus; and a protrusion bump pad disposed on the conductive trace pad portion, wherein a surface of the protrusion bump pad opposite the conductive trace is substantially level, wherein the protrusion bump pad at least partially extends over the dielectric layer, wherein the protrusion bump pad comprises a first lengthwise axis and a widthwise axis, and wherein a ratio of a first dimension of the first lengthwise axis to a second dimension of the widthwise axis is about 0.8 to about 1.2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 16)
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10. An apparatus comprising:
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an outermost dielectric layer of a first apparatus; a conductive trace in the outermost dielectric layer, wherein an exposed surface of the conductive trace is recessed from a top surface of the outermost dielectric layer; and a protrusion bump pad forming an interface with the conductive trace, wherein the protrusion bump pad at least partially extends over the top surface of the outermost dielectric layer, and wherein the interface is higher than the exposed surface of the conductive trace. - View Dependent Claims (11, 12, 13, 14, 15)
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17. An apparatus, comprising:
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a dielectric layer; a conductive trace in the dielectric layer, wherein the conductive trace comprises; a first portion having a top surface lower than a top surface of the dielectric layer; and a second portion having a top surface substantially level with the top surface of the dielectric layer; and a bump pad over and contacting the second portion of the conductive trace, wherein the bump pad comprises a first axis and a second axis substantially perpendicular to the first axis, wherein the first axis runs in a same direction as a lengthwise dimension of the conductive trace, and wherein a ratio of a first dimension of the first axis to a second dimension of the second axis is about 0.8 to about 1.2. - View Dependent Claims (18, 19, 20)
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Specification