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WO2018038571A1 - Procédé destiné à la fabrication de protection pour un détecteur d'empreinte digitale - Google Patents

Procédé destiné à la fabrication de protection pour un détecteur d'empreinte digitale Download PDF

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Publication number
WO2018038571A1
WO2018038571A1 PCT/KR2017/009308 KR2017009308W WO2018038571A1 WO 2018038571 A1 WO2018038571 A1 WO 2018038571A1 KR 2017009308 W KR2017009308 W KR 2017009308W WO 2018038571 A1 WO2018038571 A1 WO 2018038571A1
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WO
WIPO (PCT)
Prior art keywords
green sheet
ceramic green
cover
ceramic
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2017/009308
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English (en)
Korean (ko)
Inventor
조성호
오창우
안영준
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Amosense Co Ltd
Original Assignee
Amosense Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020160109516A external-priority patent/KR20180023719A/ko
Priority claimed from KR1020160122078A external-priority patent/KR20180032866A/ko
Priority claimed from KR1020160123255A external-priority patent/KR20180033823A/ko
Application filed by Amosense Co Ltd filed Critical Amosense Co Ltd
Publication of WO2018038571A1 publication Critical patent/WO2018038571A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B18/00—Layered products essentially comprising ceramics, e.g. refractory products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/48—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zirconium or hafnium oxides, zirconates, zircon or hafnates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus

Definitions

  • the present invention relates to a method of manufacturing a cover for a fingerprint sensor.
  • the fingerprint sensor is a sensor for detecting a human finger fingerprint, and has recently been widely used as a means for enhancing security in portable electronic devices such as mobile phones and tablet PCs. In other words, by registering or authenticating through a fingerprint sensor, data stored in portable electronic devices are protected and security accidents are prevented.
  • the fingerprint sensor when the fingerprint sensor is applied to the home button side of the mobile phone, the fingerprint sensor is inserted into the receiving part formed on the bezel of the mobile phone and is prevented from being exposed to the outside through a cover covering the receiving part.
  • Such a cover employs a ceramic material having excellent hardness, such as sapphire crystal or zirconia, to prevent damage due to scratches and increase the recognition rate of the fingerprint sensor.
  • the ceramic material is excellent in hardness and effective in preventing scratches, but it is weak in impact due to strong brittleness due to the sintering process through heat treatment.
  • the cover made of a ceramic material is very difficult to process into various shapes through the punching.
  • the cover is a shape having a curved surface, such as oval or circular
  • the punching process is impossible, it is generally processed through laser processing.
  • the production yield is lowered and the production cost is increased.
  • the cover is made of a ceramic material such as sapphire crystal or zirconia, the material itself is a transparent color, so the aesthetics may be deteriorated when the color of the peripheral parts such as the bezel is colored.
  • the fingerprint sensor built into the main body of the portable device is prevented from shining through the cover and the deterioration of aesthetics is prevented.
  • Such coating is generally performed through the silk screen method.
  • the present invention has been made in view of the above, the present invention is to provide a method of manufacturing a cover for a fingerprint sensor for easy processing to a variety of shapes by the shape processing is made before the final sintering.
  • another object of the present invention is to provide a method of manufacturing a cover for a fingerprint sensor which can realize a color similar to a peripheral part without performing a separate process such as a silk screen because the ceramic green sheet includes a colored pigment. .
  • the present invention is a manufacturing method of a cover disposed in front of the fingerprint sensor in contact with the user's finger, comprising: preparing a ceramic green sheet by applying a ceramic slurry on the substrate; A shape processing step of first cutting a part of the total thickness of the ceramic green sheet by a punching process to have a predetermined shape; And sintering the ceramic green sheet by heat treatment.
  • the second step of the heat-treated ceramic green sheet to separate the individual may include.
  • the second step of separating the ceramic green sheet by separating the individual may be performed for the remaining thickness except the first cut portion of the total thickness of the ceramic green sheet.
  • the method may further include forming an anti-fingerprint layer on one surface of the heat treated ceramic green sheet.
  • the individual may have a shape in which at least a part of the entire frame includes a curve.
  • the ceramic green sheet may be a ceramic sheet including at least one of zirconia, alumina, TiC, TiN, and TiCN.
  • the ceramic slurry may include a colored pigment.
  • the colored pigment may be any one of white, gold, black, gray, silver, blue, pink, brown, green, yellow, and red.
  • the ceramic green sheet may be a single layer sheet containing a colored pigment, or may be a multi-layered sheet in which a plurality of sheets having different colors are stacked in multiple layers.
  • the ceramic green sheet is a multi-layered sheet
  • pressing the multi-layered sheet may be further included.
  • the ceramic green sheet is a multi-layered sheet
  • the plurality of sheets may be formed of the same material.
  • the present invention is another method of manufacturing a cover disposed in front of the fingerprint sensor in contact with the user's finger, comprising: preparing a ceramic green sheet by applying a ceramic slurry on the substrate; Punching an individual having a predetermined shape from the ceramic green sheet; And sintering the individual by heat treatment.
  • the present invention is another method of manufacturing a cover disposed in front of the fingerprint sensor in contact with the user's finger, comprising the steps of: applying a ceramic slurry on the substrate to produce a ceramic green sheet; Sintering the ceramic green sheet at a first temperature to form an intermediate sintered body; Separating the intermediate sintered body into individual bodies having a predetermined shape; And heat-treating the individual at a second temperature relatively higher than the first temperature to sinter secondary.
  • the first temperature may be 500 ⁇ 700 °C
  • the second temperature may be 1000 ⁇ 1400 °C.
  • the present invention can simplify the production process because the ceramic slurry constituting the ceramic green sheet can be omitted, such as a silk screen for imparting color by including a colored pigment.
  • the present invention has the advantage that the surface of the cover is formed by the cutting surface by the punching process has an excellent surface roughness compared to the laser processing, if the side of the cover is cut in two times before and after sintering have a different surface roughness Can be.
  • FIG. 1 is a block diagram showing a manufacturing method of a cover for a fingerprint recognition sensor according to a first embodiment of the present invention
  • FIG. 2 is a process flowchart showing a manufacturing method of a cover for a fingerprint sensor according to a first embodiment of the present invention
  • FIG. 3 is a schematic view for explaining a first region and a second region formed on the side of the ceramic element in the manufacturing method of the fingerprint sensor cover according to the first embodiment of the present invention
  • Figure 4 is a block diagram showing a manufacturing method of the cover for the fingerprint sensor according to a second embodiment of the present invention
  • FIG. 5 is a process flowchart showing a manufacturing method of a cover for a fingerprint recognition sensor according to a second embodiment of the present invention.
  • FIG. 6 is a block diagram showing a method of manufacturing a cover for a fingerprint recognition sensor according to a first embodiment of the present invention
  • FIG. 7 is a process flowchart showing the manufacturing method of the cover for the fingerprint sensor according to the first embodiment of the present invention.
  • FIG. 8 is a diagram illustrating various cases in which the ceramic body of the cover manufactured by the manufacturing method according to the present invention is a single layer and a multilayer case;
  • FIG. 9 is an exemplary view showing various shapes of a cover manufactured by the manufacturing method according to the present invention.
  • FIG. 10 is a view showing a state in which a cover manufactured by the manufacturing method according to the present invention is applied to a portable device.
  • Method of manufacturing a cover 100 for a fingerprint sensor is to prepare a ceramic green sheet (S11), shape processing step (S12) and sintering as shown in Figures 1 and 2 Step S13 may be included.
  • the step (S11) of manufacturing the ceramic green sheet is to form a plate-shaped ceramic green sheet 12 having a predetermined area and thickness by applying and drying a ceramic slurry on the substrate 11 (FIG. a).
  • the ceramic green sheet 12 may be prepared by mixing a fine ceramic powder with an aqueous or non-aqueous solvent and a binder, a plasticizer, a dispersant, an antifoaming agent, a surfactant, and the like in an appropriate ratio to prepare a ceramic slurry on the substrate 11.
  • the ceramic slurry may be manufactured through a tape casting method of applying a predetermined thickness.
  • the ceramic green sheet 12 may be implemented as a single-layered sheet, but may be implemented as a single-layer ceramic body 110, but a plurality of sheets are formed as a multilayered sheet laminated in multiple layers to implement a multilayer ceramic body 110. May be (see FIG. 8).
  • the interface between the sheets may be flattened by pressing through a separate pressing process (S11 ′). Through this, it is possible to prevent a variety of problems such as peeling between layers in the subsequent process.
  • each sheet may be made of the same material or may be made of different materials.
  • the ceramic powder may include any one selected from the group consisting of zirconia, alumina, TiC, TIN, TiCN, and combinations thereof, but is not limited thereto, and any ceramic powder may be used. To reveal.
  • the fingerprint recognition sensor cover 100 manufactured according to the present embodiment may have a predetermined dielectric constant by being made of the ceramic body 110 in which the ceramic green sheet 12 is sintered. For this reason, when the cover 100 for the fingerprint recognition sensor is disposed in the front side of the fingerprint recognition sensor 20 in a product such as a portable electronic device, a driving signal generated by the fingerprint recognition sensor 20 may cause a user's finger. By condensing the electric force lines directed toward the fingerprint recognition sensor 20, the recognition rate and accuracy of the fingerprint recognition sensor 20 may be improved.
  • the shape processing step S12 is a step of processing a shape substantially the same as that of the final product 100 from the ceramic green sheet 12, and may be performed before sintering the ceramic green sheet 12.
  • the upper side surface of the ceramic body 110 constituting the cover 100 as a final product may be formed.
  • the shape processing step S12 may be performed through a punching process using a mold, and may be performed only for a thickness t1 of a part of the total thickness t of the ceramic green sheet 12.
  • the shape processing step (S12) is the blade of the mold having the same shape as the edge of the cover 100 of the final product is inserted into the ceramic green sheet 12 by a predetermined depth from the upper surface of the ceramic green sheet 12 Only a part of the thickness t1 of the total thickness t can be cut (see Fig. 2B).
  • the plurality of temporary separators 13 having the same shape as the cover 100 as the final product may be formed on the ceramic green sheet 12 side.
  • a plurality of temporary separators 13 having a predetermined shape may be cured in an array in one ceramic green sheet 12 (FIG. 2 (c)), by temporarily cutting the temporary separator 13 from the cured ceramic green sheet 12 and separating it into individual pieces, a cover 100 as a final product may be manufactured (see FIG. d)).
  • the secondary cutting process (S15) for separating the individual from the ceramic green sheet 12 to each individual process is produced in a semi-finished state in which a plurality of temporary separators 13 are arranged and then applied to an application such as a portable device It may be made in, or may be performed in a subsequent process after the sintering is completed.
  • the second cutting portion of the temporary separator 13 may be performed on the remaining thickness t2 except the first cut thickness t1 of the total thickness t of the ceramic green sheet 12.
  • the individual body completely separated from each of the ceramic green sheets 12 through the secondary cutting process has a lower side formed through the secondary cutting as shown in FIG. 3. It may have different surface roughness from the side.
  • the individual body may have the same shape as the cover 100 for the fingerprint sensor, which is a final product, and may be divided into a first area A1 and a second area A2 having a predetermined area having a cut surface.
  • the surface roughness of the first region A1 and the surface roughness of the second region A2 may have different surface roughnesses (see FIG. 3).
  • the sum of the area corresponding to the first area A1 and the area corresponding to the second area A2 may be the total area of one side of the individual body.
  • the first area A1 and the second area A2 may be distinguished from each other by a virtual straight line L formed along the side surface of the individual in the middle of the height or the thickness of the individual. Accordingly, the first region A1 may form an upper side surface of the individual body or the ceramic body 110, and the second region A2 may form a lower side surface of the individual body or the ceramic body 110. have.
  • the width or thickness t1 of the first region A1 may have the same size as or different from the width or thickness t2 of the second region A2.
  • an imaginary straight line L separating the first area A1 and the second area A2 may be formed along the middle of the height or the middle of the thickness of the sheet constituting the individual body or the ceramic body 110. have.
  • the individual when the individual is composed of a plurality of sheets stacked on each other may be formed to match the boundary between the sheets.
  • the process of processing the shape to have a shape substantially the same as that of the cover 100, which is the final product may be performed at the previous stage of the sintering process, thereby increasing the ease of processing.
  • the cover 100 for the fingerprint recognition sensor which is a final product, is formed by cutting the ceramic green sheet 12 in a flexible state before sintering to form an upper side of the ceramic element 110, so that the upper side is sintered. It may have a relatively small surface roughness compared to the lower side surface is a cutting surface formed by the secondary cutting in the completed state.
  • the sintering process is performed after being processed into the temporary separator 13 having a relatively narrow area relative to the total area of the ceramic green sheet 12, deformation and deformation of the camber in the edge portion during the sintering process are generated. It can be minimized.
  • the temporary separator 13 may have a shape in which at least a part of the edge of the entire border includes a curve, such as a polygonal shape such as a triangular shape or a square shape, as well as a polygonal shape that is round, elliptical, or a corner processed by a curve. (See FIG. 9).
  • the manufacturing method according to an embodiment of the present invention includes the step of forming an anti-fingerprint layer 120 for preventing slip and scratches on one surface of the ceramic green sheet 12, the sintering process is completed (S14) Can be.
  • the surface polishing process may be performed by at least one of a known lapping process or a polishing process, and any one of two processes may be selectively performed according to the state of the ceramic green sheet 12 which has been sintered. It may also be performed.
  • the manufacturing method of the cover for the fingerprint sensor according to another embodiment of the present invention is to produce a ceramic green sheet (S21), forming an individual (S22), as shown in Figure 4 and 5, It may include the step of sintering (S23) and the step of polishing (S24).
  • the step (S21) of manufacturing the ceramic green sheet is to form a plate-shaped ceramic green sheet 12 having a predetermined area and thickness by applying and drying a ceramic slurry on the substrate 11 (FIG. 5 ( a).
  • the ceramic green sheet 12 may be prepared by mixing a fine ceramic powder with an aqueous or non-aqueous solvent and a binder, a plasticizer, a dispersant, an antifoaming agent, a surfactant, and the like in an appropriate ratio to prepare a ceramic slurry on the substrate 11.
  • the ceramic slurry may be manufactured through a tape casting method of applying a predetermined thickness.
  • the ceramic green sheet 12 may be implemented as a single-layered sheet, but may be implemented as a single-layer ceramic body 110, but a plurality of sheets are formed as a multilayered sheet laminated in multiple layers to implement a multilayer ceramic body 110. May be (see FIG. 8).
  • the interface between the sheets may be flattened by pressing through a separate pressing process. Through this, it is possible to prevent a variety of problems such as peeling between layers in the subsequent process.
  • each sheet may be made of the same material or may be made of different materials.
  • the ceramic powder may include any one selected from the group consisting of zirconia, alumina, TiC, TIN, TiCN, and combinations thereof, but is not limited thereto, and any ceramic powder may be used. To reveal.
  • the fingerprint recognition sensor cover 100 manufactured according to the present embodiment may have a predetermined dielectric constant by being made of the ceramic body 110 in which the ceramic green sheet 12 is sintered. For this reason, when the cover 100 for the fingerprint recognition sensor is disposed in the front side of the fingerprint recognition sensor 20 in a product such as a portable electronic device, a driving signal generated by the fingerprint recognition sensor 20 may cause a user's finger. By condensing the electric force lines directed toward the fingerprint recognition sensor 20, the recognition rate and accuracy of the fingerprint recognition sensor 20 may be improved.
  • Forming the individual (S22) may be a step of processing from the ceramic green sheet 12 to the individual body 14 having substantially the same shape and size as the final cover 100, the individual body Sintering step (S22) may be a step of curing by applying heat to the individual body 14 having a predetermined size and shape.
  • the process of processing the shape so as to have a shape substantially the same as the cover 100, which is the final product can be made in the previous step of the sintering process can increase the ease of processing.
  • the individual body 14 having the same shape as the shape of the cover 100 which is the final product from the ceramic green sheet 12 is formed.
  • die all well-known various shape processing methods including the punching method using a metal mold
  • the individual body 14 can be processed into various shapes desired.
  • the individual body 14 may have a shape in which a border of at least a part of the entire border includes a curve, such as a polygonal shape such as a triangular shape or a square shape, as well as a circular shape, an oval shape, or a polygonal shape whose corners are curved. (See FIG. 9).
  • the manufacturing method of the present embodiment is less brittle than the sheet which has been sintered even when processed in the form of the final product through punching, and can not only prevent damage to the sheet itself by impact during processing, but also productivity compared to laser processing. Can dramatically increase.
  • the side surface of the cover 100 which is a cutting surface, may have a surface roughness that is relatively superior to that of the cutting surface by laser cutting.
  • the sintering process is performed after being processed into an individual body 14 having a relatively narrow area compared to the total area of the ceramic green sheet 12, deformation due to shrinkage during the sintering process and generation of camber at the edge portion It can be minimized.
  • the amount of work can be reduced and the processing time can be reduced during post-processing, such as a lapping process or a polishing process for processing the surface of the sintered individual 14.
  • Such a polishing process may be performed through at least one of a known lapping process or a polishing process, and any one of two processes may be selectively performed according to the state of the individual body 14 that has been sintered. It may be.
  • the manufacturing method according to the present embodiment may include the step (S25) of forming a fingerprint prevention layer 120 for preventing slip and scratch on one surface of the individual body 14, the polishing process is completed (Fig. (E) of 5).
  • one surface on which the anti-fingerprint layer 120 is formed may be one surface exposed to the outside, and when the individual body 14 is formed of a multi-layered sheet having different colors, it may be formed on both top and bottom surfaces. Can be.
  • the anti-fingerprint layer 120 may be a known anti-fingerprinting (AF) coating layer for preventing the occurrence of scratches and fingerprints.
  • the anti-fingerprint layer 120 may be a fluorine-based or silicon-based to have anti-fingerprint and antifouling properties.
  • the manufacturing method of the cover for the fingerprint sensor in accordance with another embodiment of the present invention to prepare a ceramic green sheet 12 as shown in Figure 6 and 7 (S31), the first sintering step (S32) ), May be separated into individual (S33) and the second sintering step (S34).
  • the step (S31) of manufacturing the ceramic green sheet is to form a plate-shaped ceramic green sheet 12 having a predetermined area and thickness by applying and drying a ceramic slurry on the substrate 11 (FIG. 7 ( a)).
  • the ceramic green sheet 12 may be prepared by mixing a fine ceramic powder with an aqueous or non-aqueous solvent and a binder, a plasticizer, a dispersant, an antifoaming agent, a surfactant, and the like in an appropriate ratio to prepare a ceramic slurry on the substrate 11.
  • the ceramic slurry may be manufactured through a tape casting method of applying a predetermined thickness.
  • the ceramic green sheet 12 may be implemented as a single-layered sheet, but may be implemented as a single-layer ceramic body 110, but a plurality of sheets are formed as a multilayered sheet laminated in multiple layers to implement a multilayer ceramic body 110. May be (see FIG. 8).
  • the ceramic green sheet 12 is formed of a multi-layer sheet, by pressing through a separate pressing process (S31 '), the interface between the ceramic green sheets 12 is flattened, such as peeling between layers in a subsequent process. It can prevent problems from occurring.
  • each of the sheets 111, 112, and 113 may be made of the same material or may be made of different materials.
  • the ceramic powder may include any one selected from the group consisting of zirconia, alumina, TiC, TIN, TiCN, and combinations thereof, but is not limited thereto, and any ceramic powder may be used. To reveal.
  • the fingerprint recognition sensor cover 100 manufactured according to the present embodiment may have a predetermined dielectric constant by being made of the ceramic body 110 in which the ceramic green sheet 12 is sintered. For this reason, when the cover 100 for the fingerprint recognition sensor is disposed in the front side of the fingerprint recognition sensor 20 in a product such as a portable electronic device, a driving signal generated by the fingerprint recognition sensor 20 may cause a user's finger. By condensing the electric force lines directed toward the fingerprint recognition sensor 20, the recognition rate and accuracy of the fingerprint recognition sensor 20 may be improved.
  • the first sintering step (S32) is to form an intermediate sintered body by applying heat to the ceramic green sheet 12. That is, in the first sintering step S32, heat may be applied to the ceramic green sheet 12 to change the ceramic green sheet 12 into an intermediate sintered body in a temporary curing state.
  • the secondary sintering step (S34) to be performed after the removal of the binder or air, including the solvent, binder, dispersant, etc. included in the ceramic green sheet 12 by the heat applied in the first sintering step (S32). The amount of deformation and distortion due to shrinkage and distortion of the ceramic green sheet 12 can be reduced.
  • the first sintering step (S32) may be performed for a sufficient time at a temperature relatively lower than the temperature performed in the second sintering step (S34).
  • the first sintering step (S32) may be performed at a first temperature that is a temperature range of 500 ⁇ 700 °C
  • the second sintering step (S34) at a second temperature of a temperature range of 1000 ⁇ 1400 °C.
  • the first temperature and the second temperature are not limited thereto, and the temperature ranges applied in the first sintering step S32 and the second sintering step S34 may be appropriately changed according to the type of ceramic powder.
  • the first temperature applied in the first sintering step (S32) is relatively low temperature than the second temperature applied in the second sintering step (S34) it will be clear.
  • the shape processing step (S33) is a step of processing to have a shape substantially the same as the cover 100 for the fingerprint sensor, which is the final product, by cutting the ceramic green sheet 12 in the intermediate sintered state through the first sintering the ceramic green A plurality of individual bodies 14 can be separated from the sheet 12 (see FIGS. 7B and 7C).
  • the same shape processing as the cover 100 for the fingerprint sensor, which is the final product is performed in the intermediate sintered state in which the ceramic green sheet 12 is cured through primary sintering, thereby providing sufficient mechanical processing for cutting. Since brittleness is weak while having strength, no breakage or cracking occurs due to external force applied during cutting.
  • the manufacturing method according to the present embodiment is carried out before the second sintering step of sintering to a high density ceramic state to process the shape to have a shape substantially the same shape as the cover 100 for the fingerprint sensor is a final product to increase the ease of processing Can be. That is, it is possible to increase the productivity by being able to form or cut a variety of known methods, including punching, and because the various known cutting process is possible it can be processed into a variety of shapes.
  • the individual body 15 may have a shape in which a border of at least a part of the entire border includes a curve, such as a polygonal shape such as a triangular shape or a square shape, as well as a circular shape, an oval shape, or a polygonal shape whose edge is curved. (See FIG. 9).
  • a curve such as a polygonal shape such as a triangular shape or a square shape, as well as a circular shape, an oval shape, or a polygonal shape whose edge is curved.
  • the secondary sintering step (S34) is a process for forming a high-density ceramic sintered body by heating (sintering) the individual body 15 separated from the ceramic green sheet 12 again.
  • the secondary sintering step S34 may be performed at a relatively higher temperature than the primary sintering step S32, so that the individual body 15 may be sufficiently sintered to a high density to a density of 90% or more. have.
  • the manufacturing method according to the present embodiment is processed into an individual body 15 having a relatively narrow area compared to the total area of the ceramic green sheet 12, so that the secondary sintering process is performed, each individual body ( 15) can minimize deformation or warpage due to shrinkage and camber generation at edges during secondary sintering. Accordingly, it is possible to reduce the amount of work and reduce the processing time during post-processing, such as a lapping process or a polishing process for processing the surface of the sintered individual 15 is completed.
  • a separate surface polishing step S35 may be performed (see FIG. 7D).
  • the surface polishing step (S35) may be performed through at least one of a known lapping process or a polishing process, and any one of two processes may be performed depending on a state of the sintered individual 15. It may optionally be performed.
  • the manufacturing method according to the present embodiment may further comprise the step (S36) of forming an anti-fingerprint layer 120 for preventing slip and scratches on one surface of the individual body 15, the secondary sintering is completed. (See FIG. 7E).
  • one surface on which the anti-fingerprint layer 120 is formed may be one surface exposed to the outside.
  • the upper surface and the lower surface may be formed on both sides. All may be formed.
  • the anti-fingerprint layer 120 may be a known anti-fingerprinting (AF) coating layer for preventing the occurrence of scratches and fingerprints.
  • the anti-fingerprint layer 120 may be a fluorine-based or silicon-based to have anti-fingerprint and antifouling properties.
  • the ceramic green sheet 12 mentioned in the above embodiments may have at least one color.
  • the ceramic slurry may include a colored pigment so that the ceramic green sheet 12 may have a desired color. That is, the cover 100 for the fingerprint sensor, which is the final product, may have at least one color by including an appropriate amount of colored pigment in the process of manufacturing the ceramic slurry.
  • the colored pigment may be any one of white, gold, black, gray, silver, blue, pink, brown, green, yellow, and red, and the same or similar color as the bezel 10 of the portable electronic device. Can be.
  • the ceramic green sheet 12 used in the manufacturing method according to the present invention has a translucent or opaque state in which colored pigments are added, the conventional method of forming a colored coating layer through a silk screen process on one surface of the cover is performed. In comparison, the production process can be simplified and the production cost can be reduced.
  • the ceramic green sheet may be a single layer having one color or a multilayer sheet in which a plurality of sheets having the same color are stacked, or may be a multilayer sheet in which a plurality of sheets having different colors are stacked.
  • the ceramic green sheet is a single layer of green.
  • the sheet may be used or a plurality of green sheets having the same color may be stacked in multiple layers.
  • the ceramic green sheet may have a first sheet 111 having a white color and a second sheet having a remaining color except for the white color.
  • 112 may be implemented as a laminated multilayer sheet.
  • the ceramic green sheet may have a two-layer structure in which one first sheet 111 and one second sheet 112 are stacked, and among the first sheet 111 and the second sheet 112. At least one green sheet may be provided in plural and stacked in three or more layers, or three or more green sheets having different colors may be stacked.
  • the ceramic green sheet may be implemented as a multilayer sheet in which at least two green sheets having different colors except white are stacked.
  • the cover 100 for the fingerprint sensor manufactured by the manufacturing method according to the present invention may have the same or similar color as that of the bezel 10 through the colored pigment added to the ceramic slurry. Through this, even if the cover 100 is exposed to the outside together with the bezel 10 can increase the unity of the overall color of the portable electronic device can be prevented from impairing the aesthetics.
  • the fingerprint sensor cover 100 manufactured by the manufacturing method according to the present invention can be implemented in a translucent or opaque state through the colored pigment added to the ceramic slurry, the fingerprint sensor cover 100 Compared to the conventional method of forming a colored coating layer through the silk screen process on one side, the production process can be simplified and the production cost can be reduced.
  • the cover 100 for the fingerprint sensor manufactured by the manufacturing method according to the present invention is implemented through the ceramic green sheet of the multilayer sheet in which the ceramic body 110 is laminated with at least two sheets having different colors.
  • One fingerprint sensor 100 for the final product may also be implemented to have two colors.
  • any one of two colors may be installed to be exposed to the outside.
  • the bezel 10 may be selectively applied to two portable electronic devices having different colors of the bezel 10 through one cover for fingerprint recognition sensor, thereby improving compatibility.
  • the fingerprint recognition sensor cover 100 manufactured by the above-described manufacturing method is disposed at the front side of the fingerprint recognition sensor 20 embedded in the portable electronic device as shown in FIG. 10 and the fingerprint recognition sensor 20. It may be fixed via the adhesive member 30, and may serve as a button (for example, a home button) that is an input means of a portable electronic device.
  • the overall thickness of the cover 100 for the fingerprint recognition sensor manufactured by the above-described manufacturing method may have a thickness of 100 ⁇ 150 ⁇ m, but the overall thickness is not limited to this and varies depending on the design conditions and application location Note that it may change.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)

Abstract

La présente invention concerne un procédé destiné à la fabrication d'une protection pour un détecteur d'empreinte digitale. Le procédé destiné à la fabrication d'une protection pour un détecteur d'empreinte digitale, conformément à un mode de réalisation donné à titre d'exemple de la présente invention, consiste : à préparer une feuille de céramique crue par application d'une barbotine de céramique sur un substrat ; à réaliser une étape d'usinage de forme pour un usinage de manière à former une forme prédéterminée en découpant d'abord une épaisseur partielle de toute l'épaisseur de la feuille de céramique crue au moyen d'un estampillage ; à traiter thermiquement et à fritter la feuille de céramique crue.
PCT/KR2017/009308 2016-08-26 2017-08-25 Procédé destiné à la fabrication de protection pour un détecteur d'empreinte digitale Ceased WO2018038571A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
KR1020160109516A KR20180023719A (ko) 2016-08-26 2016-08-26 지문인식센서용 커버부재의 제조방법
KR10-2016-0109516 2016-08-26
KR10-2016-0122078 2016-09-23
KR1020160122078A KR20180032866A (ko) 2016-09-23 2016-09-23 지문인식센서용 커버의 제조방법
KR10-2016-0123255 2016-09-26
KR1020160123255A KR20180033823A (ko) 2016-09-26 2016-09-26 지문인식센서용 커버 및 그 제조방법

Publications (1)

Publication Number Publication Date
WO2018038571A1 true WO2018038571A1 (fr) 2018-03-01

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Application Number Title Priority Date Filing Date
PCT/KR2017/009308 Ceased WO2018038571A1 (fr) 2016-08-26 2017-08-25 Procédé destiné à la fabrication de protection pour un détecteur d'empreinte digitale

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Country Link
WO (1) WO2018038571A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112351121A (zh) * 2019-08-09 2021-02-09 Oppo广东移动通信有限公司 陶瓷后盖制作方法、陶瓷后盖及移动终端
CN114591081A (zh) * 2022-03-30 2022-06-07 湖南华联特种陶瓷有限公司 一种氧化锆陶瓷制备方法及氧化锆陶瓷识别卡

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002036227A (ja) * 2000-07-27 2002-02-05 Uht Corp セラミックスグリーンシート用の切断システム
JP2012154953A (ja) * 2006-12-25 2012-08-16 Kyocera Corp 圧力センサ用パッケージおよびその製造方法、ならびに圧力センサ
KR101221877B1 (ko) * 2012-04-02 2013-01-16 신용팔 연속형 세라믹 그린시트 하프커팅장치
KR101368266B1 (ko) * 2013-09-02 2014-02-28 (주)드림텍 스티프너를 이용하여 평탄도를 향상시킨 지문인식 홈키 및 그 제조방법
KR20140141673A (ko) * 2012-03-28 2014-12-10 린텍 가부시키가이샤 세라믹 그린 시트 제조 공정용 박리 필름

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002036227A (ja) * 2000-07-27 2002-02-05 Uht Corp セラミックスグリーンシート用の切断システム
JP2012154953A (ja) * 2006-12-25 2012-08-16 Kyocera Corp 圧力センサ用パッケージおよびその製造方法、ならびに圧力センサ
KR20140141673A (ko) * 2012-03-28 2014-12-10 린텍 가부시키가이샤 세라믹 그린 시트 제조 공정용 박리 필름
KR101221877B1 (ko) * 2012-04-02 2013-01-16 신용팔 연속형 세라믹 그린시트 하프커팅장치
KR101368266B1 (ko) * 2013-09-02 2014-02-28 (주)드림텍 스티프너를 이용하여 평탄도를 향상시킨 지문인식 홈키 및 그 제조방법

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112351121A (zh) * 2019-08-09 2021-02-09 Oppo广东移动通信有限公司 陶瓷后盖制作方法、陶瓷后盖及移动终端
CN114591081A (zh) * 2022-03-30 2022-06-07 湖南华联特种陶瓷有限公司 一种氧化锆陶瓷制备方法及氧化锆陶瓷识别卡

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