PATENT CLAIM ANALYSIS

Application Number: 15780456
Application Type: Utility
Filing Date: 2018-05
Publication Date: 2018-12
Patent Classification: ["174", "262000"]

Abstract:
Provided is a differential wiring method for a high-speed printed circuit board, including the following steps: setting a pre-set impedance required value Z 2  of a non-ball grid array (BGA) region, determining the width w 2  of the second differential wire ( 210 ) and the distance d 2  between the two second differential wires ( 210 ) according to the pre-set impedance required value Z 2 ; calculating the width w 1  of the first differential wire ( 110 ) and the distance d 1  between the two first differential wires ( 110 ), according to the distance s 1  between two adjacent rows of bonding pads in a BGA region bonding pad array and the minimum processable distance s 2  between the bonding pad and the first differential wire ( 110 ), where w 1  and d 1  should satisfy 2w 1 +d 1 ≤s 1 −2s 2 , while further calculating w 1  and d 1  according to a differential characteristic impedance formula; arranging the two first differential wires ( 110 ) disposed oppositely to each other in the BGA region according to the determined d 1 , and arranging the two second differential wires ( 210 ) disposed oppositely to each other in the non-BGA region according to the determined d 2 ; connecting the first differential wire ( 110 ) and the second differential wire ( 210 ) corresponding thereto via a first connection wire ( 310 ); and connecting the first differential wire ( 110 ) and the bonding pad ( 120 ) corresponding thereto via a second connection wire ( 320 ).

Claim (Index 7):
A differential wiring method for a high-speed printed circuit board, the high-speed printed circuit board comprising a wiring layer, a dielectric layer and a shielding layer laminated sequentially, wherein the wiring layer comprises a BGA region, a non-BGA region and two first differential wires located in the BGA region and disposed oppositely to each other, two second differential wires located in the non-BGA region and disposed oppositely to each other, the BGA region is provided with bonding pads arranged in an array, the bonding pads arranged in the array comprise two first bonding pads corresponding to the two first differential wires in a one-to-one manner, the first bonding pad is connected to one end of the first differential wire away from the second differential wire; the differential wiring method includes the following steps of:\n setting a pre-set impedance required value Z 2  of the non-BGA region, and determining the width w 2  of the second differential wire and the distance d 2  between the two second differential wires according to the pre-set impedance required value Z 2 ; calculating the width w 1  of the first differential wire and the distance d 1  between the two first differential wires, according to the distance s 1  between two adjacent rows of the bonding pads in the BGA region and the minimum processable distance s 2  from the bonding pad to the first differential wire, wherein w 1  and d 1  should satisfy 2w 1 +d 1 \u2264s 1 \u22122s 2 , while further calculating w 1  and d 1  according to the formula Z 2 \u2248 2 * 87 \u025b r + 1.41 \ue89e ln \ue89e \ue89e 5.98 \ue89e \ue89e h 0.8 \ue89e \ue89e w 1 + t \ue89e ( 1 - 0.48 \ue89e \ue89e e - 0.96 \ue89e d \ue89e \ue89e 1 h ) , wherein, h is the thickness of the dielectric layer, \u03b5 r  is the dielectric constant of the dielectric layer and t is the cooper thickness of the wiring layer;\n processing the first differential wires and the second differential wires according to the determined w 1  and w 2 ; \n arranging the two first differential wires disposed oppositely to each other in the BGA region according to the determined d 1 , wherein the two first differential wires are located between two adjacent rows of bonding pads, while arranging the two second differential wires disposed oppositely to each other in the non-BGA region according to the determined d 2 ; \n connecting the first differential wire and the second differential wire corresponding thereto via a first connection wire; \n connecting the first differential wire and the first bonding pad corresponding thereto via a second connection wire, such that the first bonding pads, the second connection wires, the first differential wires, the first connection wires and the second differential wires are connected sequentially and cooperate with each other respectively, so as to form two differential transmission lines disposed oppositely to each other.

Metadata:
- Claim Count in Document: 3.0
- Percentile: 93.0
- Lexical Diversity: 3.2069
- Patent Class: 174.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['10740459', '14992011', '12995578', '15984396', '15495881']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8322637761685949
- 35 USC 102 Novelty (BERT): 0.4810130510504888
- Combined Prediction Score: 0.7971387036567843
- Mean Citation Score: 194.791112
- Max Citation Score: 209.00201
- Similarity Product: 156.41513033980732

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test