# US 2008/0186611 A1 · Flexible mounting slider with anti-static structure, head gimbal assembly and magnetic disk drive with the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0186611 A1 - Document ID: US20080186611A1 - Status: Published application - Kind: A1 - Application number: 12/068,244 - Filed: 2008-02-04 - Published: 2008-08-07 - Earliest claimed: 2007-02-07 - Assignees: SAE Magnetics (H.K.) Ltd. - Inventors: Yan Liu; HaiTing Li; ZhaoYu Teng; XingHong Li; Sidney Chou - Web page: https://patentgrep.com/patent/US20080186611A1 ## CPC - G11B 5/40: Protective measures on heads, e.g. against excessive temperature (G11B5/31 takes precedence; protection against wear G11B5/255 {; protective structure of the head: see under structures, e.g. G11B5/3106}) - G11B 5/6011: {Control of flying height} - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract A flexible mounting slider with anti-static structure includes a slider body, an anti-static structure and a lead layer. The slider body includes an ABS, a slider back surface opposite to the ABS and a trailing edge connected with the ABS and the slider back surface. The trailing edge forms a plurality of slider pads thereon. The anti-static structure is provided on the slider back surface, which includes an insulation plate formed on the slider back surface, an anti-static plate formed on the insulation plate and a grounding element. In the invention, the anti-static plate comprises an insulation layer and an anti-static layer. The grounding element is electrically contacting with the anti-static layer of the anti-static plate and the slider back surface simultaneously. The lead layer is sandwiched between the insulation plate and the insulation layer of the anti-static plate and electrically connected with the slider pads of the slider body. ## Claims ### Claim 1 A flexible mounting slider with anti-static structure, comprising: a slider body, the slider body including an air bearing surface, a slider back surface opposite to the air bearing surface, and a trailing edge connected with the air bearing surface and the slider back surface, said trailing edge forming a plurality of slider pads thereon; an anti-static structure provided on the slider back surface; which comprising an insulation plate formed on the slider back surface, an anti-static plate formed on the insulation plate; and a grounding element; wherein the anti-static plate comprising an insulation layer and an anti-static layer, the grounding element electrically contacting with the anti-static layer of the anti-static plate and the slider back surface simultaneously; and a lead layer, the lead layer sandwiched between the insulation plate and the insulation layer of the anti-static plate and electrically connected with the slider pads of the slider body. ### Claim 2 (depends on 1) The flexible mounting slider according to claim 1, wherein a surface resistivity of the anti-static plate is 0-1.0E11Ω, and a volume resistivity of the anti-static plate is 0-1.0E10 Ω·cm. ### Claim 3 (depends on 1) The flexible mounting slider according to claim 1, wherein the anti-static layer and the grounding element of the anti-static plate are made of semiconductor material or metal material. ### Claim 4 (depends on 1) The flexible mounting slider according to claim 1, wherein a thickness of the anti-static layer of the anti-static plate is 1 nm-100 nm. ### Claim 5 (depends on 3) The flexible mounting slider according to claim 3, wherein the semiconductor material is diamond-like carbon material. ### Claim 6 (depends on 1) The flexible mounting slider according to claim 1, wherein a contact hole is formed in the anti-static plate which running through the insulation layer and the anti-static layer, and a through hole is formed in the insulation plate, one end of the grounding element passes through the contact hole to contact with the anti-static layer, the other end of the grounding element passes through the through hole to contact with the slider back surface. ### Claim 7 (depends on 1) The flexible mounting slider according to claim 1, wherein the insulation plate forms a plurality of openings at positions corresponding to the slider pads of the slider body, the lead layer comprises a plurality of leads each of which includes a first pad and a second pad connecting with the first pad, and the first pad passes through the corresponding opening and electrically connects with the corresponding slider pad. ### Claim 8 (depends on 7) The flexible mounting slider according to claim 7, wherein the anti-static plate forms a plurality of openings running through the insulation layer and the anti-static layer, and the openings correspond to the second pads of the leads. ### Claim 9 A head gimbal assembly, comprising a suspension; and a flexible mounting slider provided on the suspension, wherein the flexible mounting slider comprising: a slider body, the slider body including an air bearing surface, a slider back surface opposite to the air bearing surface and a trailing edge connected with the air bearing surface and the slider back surface, the trailing edge forming a plurality of slider pads thereon; an anti-static structure provided on the slider back surface; which comprising an insulation plate formed on the slider back surface, an anti-static plate formed on the insulation plate; and a grounding element; wherein the anti-static plate comprising an insulation layer and an anti-static layer, the grounding element electrically contacting with the anti-static layer of the anti-static plate and the slider back surface simultaneously; and a lead layer, the lead layer sandwiched between the insulation plate and the insulation layer of the anti-static plate and electrically connected with the slider pads of the slider body. ### Claim 10 (depends on 9) The head gimbal assembly according to claim 9, wherein a surface resistivity of the anti-static plate is 0-1.0E11Ω, and a volume resistivity of the anti-static plate is 0-1.0E10 Ω·cm. ### Claim 11 (depends on 9) The head gimbal assembly according to claim 9, wherein a contact hole is formed in the anti-static plate which running through the insulation layer and the anti-static layer thereof, and a through hole is formed in the insulation plate, one end of the grounding element passes through the contact hole to contact with the anti-static layer, the other end of the grounding element passes through the through hole to contact with the slider back surface. ### Claim 12 (depends on 9) The head gimbal assembly according to claim 9, wherein a thickness of the anti-static layer of the anti-static plate is 1 nm-100 nm. ### Claim 13 (depends on 9) The head gimbal assembly according to claim 9, wherein the insulation plate forms a plurality of openings at positions corresponding to the slider pads of the slider body, the lead layer comprises a plurality of leads each of which includes a first pad and a second pad connected with the first pad, and the first pad passes through the corresponding opening to electrically connect with the corresponding slider pad. ### Claim 14 (depends on 13) The head gimbal assembly according to claim 13, wherein a plurality of openings are formed in the anti-static plate forms which running through the insulation layer and the anti-static layer, and the second pads pass through the corresponding openings to connect with the suspension via electrical connection balls. ### Claim 15 A disk drive unit, comparing: a head gimbal assembly; a drive arm connected to the head gimbal assembly; a disk; and a spindle motor to spin the disk; wherein the head gimbal assembly comprises a suspension and a flexible mounting slider provided on the suspension, the flexible mounting slider with anti-static structure comprises: a slider body, the slider body including an air bearing surface, a slider back surface opposite to the air bearing surface and a trailing edge connected with the air bearing surface and the slider back surface, the trailing edge forming a plurality of slider pads thereon; an anti-static structure provided on the slider back surface; which comprising an insulation plate formed on the slider back surface, an anti-static plate formed on the insulation plate; and a grounding element; wherein the anti-static plate comprising an insulation layer and an anti-static layer, the grounding element electrically contacting with the anti-static layer of the anti-static plate and the slider back surface simultaneously; and a lead layer, the lead layer sandwiched between the insulation plate and the insulation layer of the anti-static plate and electrically connected with the slider pads of the slider body. ### Claim 16 (depends on 15) The disk drive unit according to claim 15, wherein a surface resistivity of the anti-static plate is 0-1.0E11Ω, and a volume resistivity of the anti-static plate is 0-1.0E10 Ω·cm.