WO2020055157A1 - Rear cover for mobile terminal - Google Patents

Rear cover for mobile terminal Download PDF

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Publication number
WO2020055157A1
WO2020055157A1 PCT/KR2019/011820 KR2019011820W WO2020055157A1 WO 2020055157 A1 WO2020055157 A1 WO 2020055157A1 KR 2019011820 W KR2019011820 W KR 2019011820W WO 2020055157 A1 WO2020055157 A1 WO 2020055157A1
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WO
WIPO (PCT)
Prior art keywords
hologram
layer
pattern
mobile terminal
rear cover
Prior art date
Application number
PCT/KR2019/011820
Other languages
French (fr)
Korean (ko)
Inventor
박성철
김은석
오인환
Original Assignee
(주)한교홀로그램
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
Application filed by (주)한교홀로그램 filed Critical (주)한교홀로그램
Priority to CN201980059681.XA priority Critical patent/CN112703110B/en
Publication of WO2020055157A1 publication Critical patent/WO2020055157A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B32B2457/00—Electrical equipment

Definitions

  • the present invention relates to a back cover for a mobile terminal, and relates to a back cover for a mobile terminal having a volume hologram film.
  • Hologram refers to a technique that depicts a three-dimensional solid in a two-dimensional plane with a laser beam.
  • Such a hologram stores three-dimensional images by storing recording information of light generated by the interference effect of one or more laser beams on a hologram recording material such as a photopolymer or silver halide film.
  • the information stored in the two-dimensional recording material is seen as a three-dimensional image by the recording information of light stored in the recording material.
  • Such a hologram can be widely used as a storage medium or for the purpose of preventing forgery of a credit card.
  • Republic of Korea Patent Registration No. 10-0582842 discloses a 'manufacturing method and packaging box for a packaging film having a hologram'.
  • a method of forming a hologram on a base film serving as a base material for packaging a product to provide a packaging film is proposed.
  • Korean Patent Registration No. 10-0710893 discloses a method of bonding a synthetic resin film having a hologram to a polypropylene sheet.
  • This patent provides a holographic sheet with an increased optical aesthetic by adhering a synthetic resin film such as a stretched polypropylene film to a polypropylene sheet.
  • the problem to be solved by the present invention is to provide a rear cover for a mobile terminal using a hologram.
  • Another problem to be solved by the present invention is to improve the aesthetics of the appearance of the mobile terminal.
  • the rear cover for a portable terminal of the present invention for solving the above problems includes a rear housing made of a transparent material, a hologram portion located on the rear housing, and outputting a hologram image, and a protective layer positioned on the hologram portion.
  • the hologram image may be a volume hologram image.
  • the protective layer may be made of polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose (TAC) or silicon-based material.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • TAC triacetyl cellulose
  • the rear cover for the mobile terminal according to the above feature may further include first and second adhesive layers positioned between the rear housing and the hologram and between the hologram and the protective layer, respectively.
  • the thickness from the first adhesive layer to the protective layer may be 50 ⁇ m to 200 ⁇ m.
  • the rear cover for the mobile terminal according to the above feature may further include a pattern portion positioned between the hologram portion and the protective layer.
  • the pattern portion may include a base layer for a pattern positioned on the hologram portion, a primer layer in contact with the pattern base layer, and a pattern layer in contact with the primer layer.
  • the rear cover for a mobile terminal is a first adhesive layer located between the rear housing and the hologram portion, a second adhesive layer positioned between the pattern portion and the protective layer, and between the hologram portion and the pattern portion
  • a third adhesive layer may be further included.
  • the pattern portion may include a primer layer in contact with the hologram portion and a pattern layer in contact with the primer layer.
  • the rear cover for the mobile terminal may further include a first adhesive layer positioned between the rear housing and the hologram portion, and a second adhesive layer positioned between the pattern portion and the protective layer.
  • the present invention provides a rear cover for a mobile terminal according to a feature of a rear housing, a first protective layer positioned on the rear housing, a hologram unit positioned on the first protective layer and outputting a holographic image, and a pattern unit positioned on the hologram unit And a second protective layer positioned on the pattern portion.
  • the hologram image may be a volume hologram image.
  • the pattern portion may include a base layer for a pattern positioned on the hologram portion, a pattern layer positioned on the pattern base layer, and a first adhesive film positioned between the pattern base layer and the pattern layer.
  • the pattern portion may include a primer layer in contact with the hologram portion and a pattern layer in contact with the primer layer.
  • the hologram image is output from the rear cover of the portable terminal to the outside, the beauty of the rear cover of the portable terminal is greatly improved, and the aesthetics of the appearance of the portable terminal is also improved, thereby improving the quality of the portable terminal.
  • the holographic image is a volume holographic image, the stereoscopic sense of the holographic image displayed on the rear cover of the portable terminal is further improved.
  • the aesthetic sense of the hologram image output from the hologram unit is further improved by the pattern layer located on the hologram unit, thereby increasing user satisfaction and greatly improving the quality of the mobile terminal.
  • FIG. 1 is a cross-sectional view of a rear cover for a mobile terminal according to an embodiment of the present invention.
  • FIG. 2 is a view conceptually showing an example of a manufacturing apparatus for a hologram used in a hologram sheet according to an embodiment of the present invention.
  • FIG. 3 is a diagram conceptually showing another example of a manufacturing apparatus for a hologram used in a hologram sheet according to an embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
  • FIG. 6 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
  • the rear cover 1 for a rear terminal includes a rear housing 110 of the mobile terminal, a hologram unit 120 located on the rear housing 110, and a hologram unit ( 120) a protective layer 130 positioned above, a first adhesive layer 1201 positioned between the rear housing 110 and the hologram part 120, and a second positioned between the hologram part 120 and the protective layer 130 An adhesive layer 1202 is provided.
  • the rear housing 110 is a housing located on the rear side of the portable terminal (not shown), and the exposed surface constitutes an outer surface directly contacting the outside. Therefore, the rear housing 110 is attached to the rear of the portable terminal and constitutes a part of the rear case of the portable terminal.
  • the mobile terminal may be a terminal in which 5G, a 5th generation mobile communication, is implemented, and thus, the rear housing 110 may be made of a transparent material such as glass or plastic, which does not affect the transmission and reception of communication signals.
  • the hologram part 120 attached to one surface of the rear housing 110, that is, the non-exposed surface that is not exposed to the outside, is a part in which hologram information is stored.
  • the hologram unit 120 includes a substrate 121 and a photosensitive layer 122 positioned on a corresponding surface of the substrate 121.
  • the hologram part 120 is in contact with a corresponding surface of the rear housing 110 so that the photosensitive layer 122 is in contact with the corresponding surface of the rear housing 110.
  • the substrate 121 of the hologram 120 may be made of a transparent or opaque material, for example, polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose, TAC), or a silicon-based material.
  • PC polycarbonate
  • PET polyethylene terephthalate
  • TAC triacetyl cellulose
  • the substrate 121 may have a thickness of 10 ⁇ m to 200 ⁇ m.
  • the photosensitive layer 122 positioned on the substrate 121 is made of a material for recording a holographic image, and is a portion in which the holographic image is stored.
  • the holographic image stored in the photosensitive layer 122 of this example is a volume hologram ( volume hologram) image.
  • the photosensitive layer 122 may be formed of a photopolymer or silver halide, which is a photosensitive recording material.
  • the hologram unit 120 used in this example is a volume hologram unit in which a volume hologram image is stored, as described above, by irradiating a laser beam to a photosensitive layer 122 made of a photopolymer or silver halide to obtain a desired object.
  • the image was recorded as a 3D (3D) hologram.
  • the volume hologram unit 120 is divided into a transmissive type and a reflective type according to a manufacturing method in which a 3D image is recorded by changing the internal refractive index without recording information due to surface irregularities.
  • the transmissive method is known as a Fresnel hologram method, and the transmissive hologram unit 120 may be manufactured by the manufacturing apparatus illustrated in FIG. 2.
  • the manufacturing apparatus for manufacturing the volume hologram 120 in a transmissive manner is a laser beam of a predetermined color (red (R), green (G) or blue (B)).
  • At least one laser beam irradiation unit (211-213) for outputting, a plurality of first mirror (mirror) (2211-2213) located in front of each laser beam irradiation unit (211-213), the first mirror (2211-2213) )
  • a beam splitter (beam splitter) (240) which is located in front of the shutter 230 and reflects only the laser, in the first direction in front of the beam splitter (240)
  • Second mirror 222 positioned, third mirror 223 positioned after second mirror 222, first spatial filter 251 positioned in front of third mirror 223, beam
  • the splitter 240 includes a fourth mirror 224 positioned in a second direction (that is, a direction perpendicular to the first direction) in front of the splitter 240 and a second
  • a bear hologram unit 120a for storing an image of the object 500 is located, and in front of the second spatial filter 252, a bare hologram unit 120a ) Object (object) 500 to be stored is located.
  • the bare hologram unit 120a refers to an empty hologram unit in which no hologram image is stored, and the bare hologram unit 120a also includes a substrate 121 and a photosensitive layer 122a which is a portion where the hologram image is to be stored. .
  • the laser beam of the corresponding color is irradiated from the corresponding laser beam irradiation unit 211-213 to the respective first mirrors 2211-2113, and the first mirror 2211-2213 shutters the irradiated laser beams 230 ).
  • the plurality of first mirrors 2211-2213 are located on the same horizontal line, the light reflected from each of the mirrors 2211-2213 is mixed with each other and enters the shutter 230 as a mixed laser beam.
  • two laser beam irradiators 211-213 for irradiating laser beams of corresponding colors are respectively illustrated in FIG. 2, as previously described, one or two laser beam irradiators 211 -213) or by driving at least one laser beam irradiator 211-213 to output a laser beam of a desired corresponding color toward the corresponding first mirror 2211-2213.
  • the shutter 230 operates according to an external control operation to output a laser beam reflected by the first mirror 2211-2213 toward the beam splitter 240, and the beam splitter 240 outputs from the shutter 230
  • the laser beam is divided into two beams and output in the first direction and the second direction.
  • the laser beam output to the second mirror 222 in the first direction is a reference beam
  • the laser beam output to the second mirror 224 in the second direction is irradiated toward the object 500 Becomes an object beam.
  • the second mirror 222 reflects the reference beam output in the first direction toward the third mirror 223, and the third mirror 223 reflects the incident reference beam toward the spatial filter 251.
  • the spatial filter 251 selects and outputs a spatial frequency component from the incident reference beam, converts the incident reference beam into diffuse light, and irradiates it toward the bare hologram unit 120a.
  • the object beam output in the second direction from the beam splitter 240 is incident on the fourth mirror 224 and is reflected toward the second spatial filter 252 by the fourth mirror 224.
  • the object beam output in the two directions by the second spatial filter 252 is converted into diffused light and irradiated toward the object 500.
  • the reference beam reflected by the object 500 and the object beam output from the first spatial filter 251 form an interference pattern through interference with each other and store it in the photosensitive layer 122a of the bare hologram unit 120a.
  • the hologram image of the object 500 is stored in the photosensitive layer 122a to complete the hologram unit 120 of this example.
  • the hologram part 120 produced by such a manufacturing apparatus becomes a transmissive volume hologram part.
  • the manufacturing apparatus of the reflective volume hologram unit 120 includes a laser beam irradiation unit 311-313 for outputting a laser beam of a corresponding color (R, G, B), and a corresponding laser beam irradiation unit
  • a laser beam irradiation unit 311-313 for outputting a laser beam of a corresponding color (R, G, B), and a corresponding laser beam irradiation unit
  • a plurality of mirrors (321-323) reflecting the laser beam output from (311-313), a plurality of mirrors (321-323), a shutter (330) positioned in front and a spatial filter positioned in front of the shutter (330) 340 is provided.
  • the bare hologram unit 120a is located in front of the spatial filter 340, and the object 500 is located behind the bare hologram unit 120a.
  • the mirrors 321-323 are dichroic mirrors, and the spatial filter 340 is provided with a lens, a pin hole, and the like.
  • each of the mirrors 321-323 positioned corresponding to each laser beam irradiator 311-313 is a shutter.
  • the laser beam is reflected toward 330.
  • the plurality of mirrors 321-323 are located on the same horizontal line as shown in FIG. 2, the light reflected from each of the mirrors 321-323 is mixed with each other and enters the shutter 330 as a mixed laser beam.
  • the mixed laser beam incident toward the shutter 330 is output to the spatial filter 340 by the opening operation of the shutter 330, and filtered by the spatial filter 340 in the form of a diffused beam by the operation of the spatial filter 340.
  • the laser beam is irradiated to the bare hologram part 120a.
  • the diffusion beam output from the spatial filter 340 becomes a reference beam.
  • the diffusion beam irradiated to the bare hologram unit 120a passes through the bare hologram unit 120a and is output toward the target object 500 and reflected by the target object 500.
  • the reflected beam reflected by the object 50 is incident on the bare hologram part 120a again.
  • the reflected beam reflected by the object 500 is an object beam.
  • the interference pattern due to the interference between the reference beam and the object beam is bare It is recorded on the photosensitive layer 122a of the hologram unit 120a and image information on the object 500 is stored in the photosensitive layer 122a. Due to this, the volume hologram unit 120 of this example is completed.
  • the hologram unit 120 of this example produced by such a manufacturing apparatus is a reflective volume hologram unit.
  • the hologram unit 120 of the present example may be a reflective or transmissive volume hologram unit.
  • the exposed surface of the protective layer 130 positioned on the upper surface of the substrate 1211 of the hologram unit 120 is a portion in contact with the body (eg, the main circuit board) of the portable terminal, and the hologram unit 120 located at the bottom is carried.
  • the body eg, the main circuit board
  • it may be made of a transparent material.
  • the protective layer 130 is made of, for example, polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose (TAC, triacetyl cellulose) or a silicon-based material, and the thickness is It may be 20 ⁇ m to 500 ⁇ m.
  • the protective layer 130 is a single layer made of one layer, but is not limited thereto, and may be made of a plurality of layers of two or more layers made of different materials.
  • the adhesive layers 1201 and 1202 are layers formed by an adhesive or adhesive film (eg, optical clear adhesive (OCA) film, etc.) applied to the lower and upper surfaces of the hologram unit 120, respectively, from 10 ⁇ m to It may have a thickness of 200 ⁇ m.
  • an adhesive or adhesive film eg, optical clear adhesive (OCA) film, etc.
  • the first and second adhesive layers 1201 and 1202 adhere to the rear housing 110 and the protective layer 130, respectively, located on the lower and upper surfaces thereof by physical pressure applied by a roller or an operator, respectively. do.
  • the hologram image recorded in the hologram unit 120 is output from the rear cover 1 for the portable terminal of this example to the outside, the beauty of the rear cover of the portable terminal is greatly improved and the aesthetics of the appearance of the portable terminal is also improved.
  • the mobile terminal is advanced.
  • the hologram image exposed to the outside by the hologram unit 120 is a volume hologram image having an excellent three-dimensional effect, the quality of the rear terminal is higher and the product value of the mobile terminal is greatly improved.
  • the rear cover of a typical mobile terminal is mainly of a single color, such as black, gold, or silver, and a mobile phone case on which various patterns or pictures are drawn is separately purchased, and then the mobile phone case is mounted on the rear cover of the mobile terminal.
  • the rear cover 1 of the portable terminal of this example does not need to additionally mount a separate cell phone case due to the hologram unit 120 outputting various images on itself. Due to this, the user can reduce the cost of having a separate cell phone case.
  • the protective layer 130 is positioned on the hologram unit 120, the hologram unit 120 is protected from foreign substances and scratches from the main body of the portable terminal.
  • the lifespan of the hologram 120 is increased, and the phenomenon of deterioration of the hologram image due to foreign matter and the damage of the hologram image due to scratches are greatly reduced, so that the hologram image expressed in the hologram 120 The quality is improved.
  • FIG. 1 Compared to FIG. 1, it has the same structure, performs the same function, and assigns the same reference numerals as in FIG. 1 to the components, and detailed description thereof is omitted.
  • the rear cover 1a for the mobile terminal shown in FIG. 4 is the same as in FIG. 1, the rear housing 110, the hologram part 120 located on the rear housing 110, and the hologram part 120 ) Is provided on the protective layer 130, the rear housing 110 and the hologram part 120 and the first and second adhesive layers 1201 and 1202 located between the hologram part 120 and the protective layer 130) do.
  • the portable terminal of the present example may be a terminal in which 5G, which is a 5th generation mobile communication, is implemented, so that the rear housing 110 may be made of glass or plastic, which is a material that does not affect transmission and reception of communication signals.
  • 5G which is a 5th generation mobile communication
  • the rear cover 1a for the mobile terminal of this example in addition to these components (110-130, 1201, 1202), the hologram portion 120 and the pattern portion 140 positioned between the protective layer 130 additionally Be equipped.
  • the hologram unit 120 is external to the image. This is the part that can be printed.
  • the pattern part 140 includes a pattern base layer 141 located on the hologram part 120, a primer layer 142 located on the pattern base layer 141, and a primer layer 142.
  • a pattern layer 1430 positioned above may be provided.
  • the base layer 141 for a pattern located on the hologram part 120 supports and protects the pattern layer 143 and facilitates distribution of the pattern layer 143, and is made of a transparent material.
  • the primer layer 142 is a layer formed by a primer applied to a corresponding surface of the base layer 141 for a pattern, and is for attaching the lower pattern base layer 141 and the pattern layer 143. .
  • the surface uniformity of the pattern base layer 141 is improved by the primer layer 142, thereby improving the adhesion strength of the resin coating for imprinting or the sheet on which the pattern is printed (eg, the pattern layer 143) and the hologram part ( 120).
  • the pattern layer 143 is stably attached to the pattern base layer 141 Position it.
  • the pattern layer 143 is a layer on which various patterns or patterns such as pictures are printed, and may be formed in a sheet form. At this time, the pattern may be printed on the corresponding sheet or layer using an imprinting process using ultraviolet (UV) light.
  • UV ultraviolet
  • the pattern layer 143 attaches the sheet on which the desired pattern is printed to the base layer 141 for a pattern using a primer, and thereby, a primer between the pattern layer 143 and the base layer 141 for a pattern.
  • Layer 142 is located.
  • the hologram portion 120 is located below the pattern layer 150, that is, it is located a little more adjacent to the outside. For this reason, an image recorded in the photosensitive layer 122 of the hologram unit 120 by light flowing from the outside toward the hologram unit 120 may be output to the outside more clearly.
  • the pattern unit 140 on which the pattern is printed is located on the hologram unit 120 for outputting an image
  • the hologram image output from the hologram unit 120 together with the pattern printed on the pattern unit 140 By improving the aesthetic effect, the holographic image information is finally output to the outside.
  • the hologram image exposed to the outside along with the image of the pattern unit 140 becomes more mysterious and beautiful, improving user satisfaction, and upgrading the portable terminal.
  • the protective layer 130 positioned on the pattern portion 140 is for protecting the pattern portion 140 from foreign matter flowing from the main body of the portable terminal, similar to that already described.
  • the second adhesive layer 1202 positioned under the protective layer 130 is for attaching the protective layer 130 and the pattern portion 140 to each other unlike FIG. 1.
  • a third adhesive layer 1501 exists between the hologram unit 120 and the pattern unit 140, and the second adhesive layer 1501 is formed by an adhesive or adhesive film applied to the upper surface of the hologram unit 120. As a layer to be formed, it is for attaching the pattern portion 140 on the hologram portion 120.
  • a transparent adhesive may be applied or an adhesive film may be applied to the upper surface of the hologram part 120 through an operator or a roller, etc., and an adhesive film may be applied to the lower surface of the pattern part 140 on it. It is located on the upper surface of the hologram part 120.
  • the pattern portion 140 is adhered to the hologram portion 120 located thereunder by an adhesive or an adhesive film.
  • the adhesive or adhesive film positioned between the hologram part 120 and the pattern part 140 becomes the third adhesive layer 1501.
  • the rear cover 1a for a mobile terminal includes a pattern portion 143 having a pattern layer 143 on the hologram portion 100 having the hologram portion 120 located on the rear housing 110 ( 200) is located.
  • the thickness of the hologram portion 100 which is the thickness from the first adhesive layer 1201 to the third adhesive layer 1501, may be 50 ⁇ m to 200 ⁇ m, and from the lower surface of the pattern portion 140 to the protective film 130
  • the total thickness of the phosphorus pattern portion 200 may be 50 ⁇ m to 200 ⁇ m.
  • the aesthetic sense of the hologram image output from the hologram unit 120 by the pattern layer 143 is further improved, so that the user's satisfaction increases and the quality of the mobile terminal is greatly improved.
  • FIG. 5 a rear cover 1b for a mobile terminal according to another embodiment of the present invention will be described.
  • the rear cover 1b for the mobile terminal of this example has a partial structure of the hologram portion 100a and the pattern portion 200a, respectively, respectively. 100) and the pattern portion 200. Therefore, the same reference numerals as those in Fig. 4 are given to components made of the same material and functioning the same.
  • the hologram part 100a of the rear cover 1b for the mobile terminal of the present example further includes a protective layer 131 between the rear housing 110 and the hologram part 120,
  • the pattern part 140a is positioned on the hologram part 120, and the protective layer 130 is located on the pattern part 140a.
  • the hologram portion 100a includes adhesive layers 1201 and 1501 and a bonding film 171 for bonding between portions adjacent to each other.
  • the adhesive layer 1201 is for bonding between the protective layer 131 and the hologram part 120, and the adhesive layer 1501 is for bonding the hologram part 120 and the pattern part 140a to each other, and the bonding film 171 ) Is for bonding the rear housing 110 and the hologram part 120.
  • the pattern portion 200a is a pattern base layer 141 attached to the second adhesive layer 1202 positioned on the top of the hologram portion 100a, and a pattern layer located on the pattern base layer 141 ( 143) and a protective layer 130 positioned on the pattern layer 143.
  • an adhesive film (eg, a second adhesive film) 172 is positioned between the pattern base layer 141 and the pattern layer 143, and an adhesive layer 1202 is provided between the pattern portion 140a and the protective layer 130. Located.
  • the protective layer 131 positioned under the hologram part 120 is polycarbonate (PC), polyethylene terephthalate (PET), and tree, as in the protective layer 130 of FIG. 4. It consists of acetyl cellulose (TAC, triacetyl cellulose) or a silicon-based material, the thickness may be 20 ⁇ m to 500 ⁇ m.
  • the adhesive film 171 positioned between the rear housing 110 and the protective layer 131 is for stably attaching the protective layer 131 to the rear housing 110, and is made of a silicon (Si) -based material It may be made of a transparent optical mounting film (OCA, optical clear adhesive).
  • Si silicon
  • OCA transparent optical mounting film
  • the protective layer 131 is attached to the rear housing 110 by using the adhesive film 171 without a separate adhesive application operation on the corresponding surface of the rear housing 110, the manufacturing process is easier and simpler to manufacture Time is saved.
  • the adhesive films 171 and 172 may be embodied in a layer form formed by applying an adhesive or the like, not a film, that is, an adhesive layer.
  • the pattern layer 143 uses the second adhesive film (second adhesive film) 172 to base the pattern layer 141 Is located in
  • the second adhesive film 172 is also made of an optical mounting film (OCA).
  • OCA optical mounting film
  • the primer layer 142 shown in FIG. 4 is omitted, but may be used, and in this case, the adhesive film 172 positioned between the pattern base layer 141 and the pattern layer 143 may be omitted.
  • the thickness of the hologram portion 100a is 10 ⁇ m to 200 ⁇ m.
  • the thickness of the pattern portion 200a is also 10 ⁇ m to 200 ⁇ m.
  • FIG. 6 a rear cover 1c for a mobile terminal according to another embodiment will be described.
  • the pattern layer 140c is omitted from the pattern base layer 141.
  • the pattern part 140b is a primer layer positioned between the pattern layer 143 and the hologram part 120 and the pattern layer 143 (142).
  • FIG. 6 It is natural that the features of FIG. 6 can be applied to the example of FIG. 5 as well. In this case, if the base layer 141 for patterning and the adhesive film 172 for bonding between the base layer 141 for patterning and the pattern layer 143 are omitted, the base layer for pattern 141 And the pattern layer 143 are adhered to each other by a primer.
  • the pattern layer 143 is directly attached onto the hologram part 120 using a primer, the base layer 141 for the pattern and the adhesive layer for attaching the pattern base layer 141 and the hologram part 120 ( 1501) is omitted.
  • the protective layers 130 and 131 may be omitted.
  • the protective layer 130 and the pattern portions 140, 140a, and 140b may also be attached to each other with a bonding film.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

Abstract

The present invention relates to a rear cover for a mobile terminal. The rear cover for a mobile terminal comprises: a rear housing made of a transparent material; a hologram part, positioned on the rear housing, for outputting a hologram image; and a protective layer positioned on the hologram part.

Description

휴대 단말용 후면 덮개Back cover for mobile terminals
본 발명은 휴대 단말용 후면 덮개에 관한 것으로서, 볼륨 홀로그램 필름(hologram film)을 구비한 휴대 단말용 후면 덮개에 관한 것이다.The present invention relates to a back cover for a mobile terminal, and relates to a back cover for a mobile terminal having a volume hologram film.
홀로그램(Hologram)은 레이저 광선으로 2차원 평면에 3차원 입체를 묘사하는 기술을 말한다. Hologram refers to a technique that depicts a three-dimensional solid in a two-dimensional plane with a laser beam.
이러한 홀로그램은 광중합체(photopolymer) 또는 은염 필름(Silver halide) 등과 같은 홀로그램 기록 물질에 1개 혹은 다수의 레이저 광선의 간섭효과로 발생되는 빛의 기록 정보를 저장함으로써, 3차원의 영상이 보이게 된다. Such a hologram stores three-dimensional images by storing recording information of light generated by the interference effect of one or more laser beams on a hologram recording material such as a photopolymer or silver halide film.
따라서, 기록 물질에 저장된 빛의 기록정보에 의해 2차원의 기록 물질에 저장된 정보가 3차원의 영상으로 보이게 된다. Therefore, the information stored in the two-dimensional recording material is seen as a three-dimensional image by the recording information of light stored in the recording material.
이러한 홀로그램은 신용카드의 위조방지 목적이나 저장매체로서 널리 사용될 수 있다.Such a hologram can be widely used as a storage medium or for the purpose of preventing forgery of a credit card.
이러한 홀로그램을 이용한 경우의 예는 다음과 같다. An example of using such a hologram is as follows.
첫 번째로, 대한민국 등록특허 제10-0582842호(등록일자: 2006년05월17일)에는 '홀로그램이 형성된 포장용 필름의 제조방법 및 포장박스'가 개시되어 있다. 이 특허에서는 제품을 포장하는 모재가 되는 베이스 필름에 홀로그램을 형성시켜 포장용 필름을 제공하는 방법이 제시되어 있다.First, the Republic of Korea Patent Registration No. 10-0582842 (date of registration: May 17, 2006) discloses a 'manufacturing method and packaging box for a packaging film having a hologram'. In this patent, a method of forming a hologram on a base film serving as a base material for packaging a product to provide a packaging film is proposed.
또한, 대한민국 등록특허 제10-0710893호(등록일자: 2007년04월17일)에는 '홀로그램이 형성된 합성수지 필름을 폴리프로필렌 시트에 접착하는 방법'이 개시되어 있다. 이 특허에서는 폴리프로필렌 시트에 연신 폴리프로필렌 필름 등의 합성수지 필름을 접착시켜 광학적 미감이 증대된 홀로그램 시트를 제공하고 있다.In addition, Korean Patent Registration No. 10-0710893 (registration date: April 17, 2007) discloses a method of bonding a synthetic resin film having a hologram to a polypropylene sheet. This patent provides a holographic sheet with an increased optical aesthetic by adhering a synthetic resin film such as a stretched polypropylene film to a polypropylene sheet.
선행기술문헌Prior art literature
특허문헌Patent literature
대한민국 등록특허 제10-0582842호(등록일자: 2006년05월17일)Republic of Korea Registered Patent No. 10-0582842 (Registration date: May 17, 2006)
대한민국 등록특허 제10-0710893호(등록일자: 2007년04월17일)Republic of Korea Registered Patent No. 10-0710893 (Registration Date: April 17, 2007)
본 발명이 해결하려는 과제는 홀로그램부를 이용한 휴대 단말용 후면 덮개를 제공하기 위한 것이다. The problem to be solved by the present invention is to provide a rear cover for a mobile terminal using a hologram.
본 발명이 해결하려는 다른 과제는 휴대 단말의 외관에 대한 심미성을 향상시키기 위한 것이다. Another problem to be solved by the present invention is to improve the aesthetics of the appearance of the mobile terminal.
상기 과제를 해결하기 위한 본 발명의 휴대 단말용 후면 덮개는 투명한 재료로 이루어진 있는 후면 하우징, 상기 후면 하우징 위에 위치하고, 홀로그램 영상을 출력하는 홀로그램부, 그리고 상기 홀로그램부에 위치하는 보호층을 포함한다.The rear cover for a portable terminal of the present invention for solving the above problems includes a rear housing made of a transparent material, a hologram portion located on the rear housing, and outputting a hologram image, and a protective layer positioned on the hologram portion.
상기 홀로그램 영상은 볼륨 홀로그램 영상일 수 있다. The hologram image may be a volume hologram image.
상기 보호층은 폴리카보네이트(polycarbonate, PC), 폴리에틸렌 테레프타레이트(PET), 트리아세틸셀룰로우스(TAC, triacetyl cellulose) 또는 실리콘 기반의 물질로 이루어질 수 있다.The protective layer may be made of polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose (TAC) or silicon-based material.
상기 특징에 따른 휴대 단말용 후면 덮개는 상기 후면 하우징과 상기 홀로그램부 사이 그리고 홀로그램부와 상기 보호층 사이에 각각 위치하는 제1 및 제2 접착층을 더 포함할 수 있다.The rear cover for the mobile terminal according to the above feature may further include first and second adhesive layers positioned between the rear housing and the hologram and between the hologram and the protective layer, respectively.
상기 제1 접착층에서부터 상기 보호층까지의 두께는 50㎛ 내지 200㎛일 수 있다.The thickness from the first adhesive layer to the protective layer may be 50 μm to 200 μm.
상기 특징에 따른 휴대 단말용 후면 덮개는 상기 홀로그램부과 상기 보호층 사이에 위치하는 패턴부를 더 포함할 수 있다.The rear cover for the mobile terminal according to the above feature may further include a pattern portion positioned between the hologram portion and the protective layer.
상기 패턴부는 상기 홀로그램부 위에 위치하는 패턴용 베이스층, 상기 패턴용 베이스층과 접해 있는 프라이머층, 그리고 상기 프라이머층과 접해 있는 패턴층을 포함할 수 있다.The pattern portion may include a base layer for a pattern positioned on the hologram portion, a primer layer in contact with the pattern base layer, and a pattern layer in contact with the primer layer.
상기 특징에 따른 휴대 단말용 후면 덮개는 상기 후면 하우징과 상기 홀로그램부 사이에 위치하는 제1 접착층, 상기 패턴부와 상기 보호층 사이에 위치하는 제2 접착층, 그리고 상기 홀로그램부와 상기 패턴부 사이에 위치하는 제3 접착층을 더 포함할 수 있다.The rear cover for a mobile terminal according to the feature is a first adhesive layer located between the rear housing and the hologram portion, a second adhesive layer positioned between the pattern portion and the protective layer, and between the hologram portion and the pattern portion A third adhesive layer may be further included.
상기 패턴부는 상기 홀로그램부과 접해있는 프라이머층, 그리고 상기 프라이머층과 접해있는 패턴층을 포함할 수 있다.The pattern portion may include a primer layer in contact with the hologram portion and a pattern layer in contact with the primer layer.
상기 특징에 따른 휴대 단말용 후면 덮개는 상기 후면 하우징과 상기 홀로그램부 사이에 위치하는 제1 접착층, 그리고 상기 패턴부와 상기 보호층 사이에 위치하는 제2 접착층을 더 포함할 수 있다.The rear cover for the mobile terminal according to the above feature may further include a first adhesive layer positioned between the rear housing and the hologram portion, and a second adhesive layer positioned between the pattern portion and the protective layer.
본 발명은 특징에 따른 휴대 단말용 후면 덮개는 후면 하우징, 상기 후면 하우징 위에 위치하는 제1 보호층, 상기 제1 보호층 위에 위치하고, 홀로그램 영상을 출력하는 홀로그램부, 상기 홀로그램부에 위치하는 패턴부, 그리고 상기 패턴부 위에 위치하는 제2 보호층을 포함한다.The present invention provides a rear cover for a mobile terminal according to a feature of a rear housing, a first protective layer positioned on the rear housing, a hologram unit positioned on the first protective layer and outputting a holographic image, and a pattern unit positioned on the hologram unit And a second protective layer positioned on the pattern portion.
상기 홀로그램 영상은 볼륨 홀로그램 영상일 수 있다. The hologram image may be a volume hologram image.
상기 패턴부는 상기 홀로그램부 위에 위치하는 패턴용 베이스층, 상기 패턴용 베이스층 위에 위치하는 패턴층, 그리고 상기 패턴용 베이스층과 상기 패턴층 사이에 위치하는 제1 접착 필름을 포함할 수 있다.The pattern portion may include a base layer for a pattern positioned on the hologram portion, a pattern layer positioned on the pattern base layer, and a first adhesive film positioned between the pattern base layer and the pattern layer.
상기 패턴부는 상기 홀로그램부과 접해 있는 프라이머층, 그리고 상기 프라이머층과 접해 있는 패턴층을 포함할 수 있다.The pattern portion may include a primer layer in contact with the hologram portion and a pattern layer in contact with the primer layer.
이러한 특징에 따르면, 휴대 단말의 후면 덮개에서 홀로그램 영상이 외부로 출력되므로, 휴대 단말의 후면 덮개의 아름다움이 크게 향상되고 휴대 단말의 외관에 대한 심미성 역시 향상되어, 해당 휴대 단말의 고급화가 이루어진다. 특히, 홀로그램의 영상이 볼륨 홀로그램 영상이므로, 휴대 단말의 후면 덮개에서 표출되는 홀로그램 영상의 입체감은 더욱 향상된다.According to this feature, since the hologram image is output from the rear cover of the portable terminal to the outside, the beauty of the rear cover of the portable terminal is greatly improved, and the aesthetics of the appearance of the portable terminal is also improved, thereby improving the quality of the portable terminal. In particular, since the holographic image is a volume holographic image, the stereoscopic sense of the holographic image displayed on the rear cover of the portable terminal is further improved.
또한, 다양한 패턴이나 그림이 그려져 있는 휴대폰 케이스를 별도로 구매할 필요가 없으므로, 별도의 휴대폰 케이스를 구비해야 하는 비용이 절감된다.In addition, since there is no need to separately purchase a mobile phone case in which various patterns or pictures are drawn, the cost of having a separate mobile phone case is reduced.
이에 더하여, 홀로그램부 위에 보호층에 의해, 홀로그램부에 이물질이 유입되거나 외부적인 충격에 의해 손상 또는 파손의 위험이 크게 줄어든다.In addition to this, by the protective layer on the hologram, foreign matter is introduced into the hologram or the risk of damage or damage is greatly reduced by external impact.
따라서, 휴대 단말의 후면 덮개에 위치한 홀로그램부의 수명이 증가하고, 이물질의 유입이 감소하므로 휴대 단말의 후면 덮개에서 외부로 출력되는 홀로그램 영상의 선명도의 감소 우려가 줄어든다. Therefore, since the life of the hologram portion located on the rear cover of the mobile terminal increases and the inflow of foreign substances decreases, the possibility of reducing the clarity of the hologram image output from the rear cover of the mobile terminal is reduced.
또한, 홀로그램부 위에 위치하는 패턴층에 의해, 홀로그램부에서 출력되는 홀로그램 영상의 심미감이 더욱 향상되어, 사용자의 만족도가 증가하며 휴대 단말의 고급화가 크게 향상된다. In addition, the aesthetic sense of the hologram image output from the hologram unit is further improved by the pattern layer located on the hologram unit, thereby increasing user satisfaction and greatly improving the quality of the mobile terminal.
도 1은 본 발명의 일 실시예에 따른 휴대 단말용 후면 덮개의 단면도이다.1 is a cross-sectional view of a rear cover for a mobile terminal according to an embodiment of the present invention.
도 2는 본 발명의 일 실시예에 따른 홀로그램 시트에 사용된 홀로그램부의 제조 장치에 대한 한 예를 개념적으로 도시한 도면이다.2 is a view conceptually showing an example of a manufacturing apparatus for a hologram used in a hologram sheet according to an embodiment of the present invention.
도 3은 본 발명의 일 실시예에 따른 홀로그램 시트에 사용된 홀로그램부의 제조 장치에 대한 다른 예를 개념적으로 도시한 도면이다.3 is a diagram conceptually showing another example of a manufacturing apparatus for a hologram used in a hologram sheet according to an embodiment of the present invention.
도 4는 본 발명의 다른 실시예에 따른 휴대 단말용 후면 덮개의 단면도이다.4 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
도 5는 본 발명의 또 다른 실시예에 따른 휴대 단말용 후면 덮개의 단면도이다.5 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
도 6은 본 발명의 또 다른 실시예에 따른 휴대 단말용 후면 덮개의 단면도이다.6 is a cross-sectional view of a rear cover for a mobile terminal according to another embodiment of the present invention.
이하, 첨부된 도면을 참조하여 본 발명의 실시예들을 상세히 설명한다. 본 발명을 설명하는데 있어서, 해당 분야에 이미 공지된 기술 또는 구성에 대한 구체적인 설명을 부가하는 것이 본 발명의 요지를 불분명하게 할 수 있다고 판단되는 경우에는 상세한 설명에서 이를 일부 생략하도록 한다. 또한, 본 명세서에서 사용되는 용어들은 본 발명의 실시예들을 적절히 표현하기 위해 사용된 용어들로서, 이는 해당 분야의 관련된 사람 또는 관례 등에 따라 달라질 수 있다. 따라서, 본 용어들에 대한 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that adding a detailed description of a technology or configuration already known in the art may obscure the gist of the present invention, some of them will be omitted from the detailed description. In addition, the terms used in the present specification are terms used to properly express the embodiments of the present invention, which may vary according to persons or practices related to the field. Therefore, definitions of these terms should be made based on the contents throughout the present specification.
여기서 사용되는 전문용어는 단지 특정 실시예를 언급하기 위한 것이며, 본 발명을 한정하는 것을 의도하지 않는다. 여기서 사용되는 단수 형태들은 문구들이 이와 명백히 반대의 의미를 나타내지 않는 한 복수 형태들도 포함한다. 명세서에서 사용되는 '포함하는'의 의미는 특정 특성, 영역, 정수, 단계, 동작, 요소 및/또는 성분을 구체화하며, 다른 특정 특성, 영역, 정수, 단계, 동작, 요소, 성분 및/또는 군의 존재나 부가를 제외시키는 것은 아니다.The terminology used herein is only to refer to a specific embodiment and is not intended to limit the invention. The singular forms used herein include plural forms unless the phrases clearly indicate the opposite. As used herein, the meaning of 'comprising' embodies certain properties, regions, integers, steps, actions, elements and / or components, and other specific properties, regions, integers, steps, actions, elements, components and / or groups. It does not exclude the existence or addition of.
이하, 첨부된 도 1을 참조하여 본 발명의 일 실시예에 따른 휴대 단말용 후면 덮개에 대해서 설명하도록 한다.Hereinafter, a back cover for a mobile terminal according to an embodiment of the present invention will be described with reference to the accompanying FIG. 1.
도 1을 참고로 하면, 본 발명의 일 실시예에 따른 후면 단말용 후면 덮개(1)는 휴대 단말의 후면 하우징(110), 후면 하우징(110) 위에 위치하는 홀로그램부(120), 홀로그램부(120) 위에 위치하는 보호층(130), 후면 하우징(110)과 홀로그램부(120) 사이에 위치하는 제1 접착층(1201) 및 홀로그램부(120)과 보호층(130) 사이에 위치하는 제2 접착층(1202)을 구비한다. Referring to FIG. 1, the rear cover 1 for a rear terminal according to an embodiment of the present invention includes a rear housing 110 of the mobile terminal, a hologram unit 120 located on the rear housing 110, and a hologram unit ( 120) a protective layer 130 positioned above, a first adhesive layer 1201 positioned between the rear housing 110 and the hologram part 120, and a second positioned between the hologram part 120 and the protective layer 130 An adhesive layer 1202 is provided.
후면 하우징(110)은 휴대 단말(도시하지 않음)의 후면 측에 위치하는 하우징으로서, 노출면은 외부와 바로 접해 있는 외부면을 구성한다. 따라서, 후면 하우징(110)은 휴대 단말의 후면에 부착되어 휴대 단말의 후면 케이스의 일부를 구성한다.The rear housing 110 is a housing located on the rear side of the portable terminal (not shown), and the exposed surface constitutes an outer surface directly contacting the outside. Therefore, the rear housing 110 is attached to the rear of the portable terminal and constitutes a part of the rear case of the portable terminal.
이때, 휴대 단말은 5세대 이동통신인 5G가 구현되는 단말일 수 있고, 이로 인해 후면 하우징(110)은 통신 신호의 송수신에 영향을 미치지 않는 재료인 유리나 플라스틱과 같이 투명한 재료로 이루어질 수 있다.At this time, the mobile terminal may be a terminal in which 5G, a 5th generation mobile communication, is implemented, and thus, the rear housing 110 may be made of a transparent material such as glass or plastic, which does not affect the transmission and reception of communication signals.
후면 하우징(110)의 일면 즉, 외부로 노출되지 않는 비노출면에 부착되는 홀로그램부(120)는 홀로그램 정보가 저장되어 있는 부분이다.The hologram part 120 attached to one surface of the rear housing 110, that is, the non-exposed surface that is not exposed to the outside, is a part in which hologram information is stored.
이러한 홀로그램부(120)는 기판(121)과 기판(121)의 해당 면에 위치하는 감광층(122)을 구비한다. The hologram unit 120 includes a substrate 121 and a photosensitive layer 122 positioned on a corresponding surface of the substrate 121.
도 1에 도시한 것처럼, 홀로그램부(120)는 후면 하우징(110)의 해당 면에 감광층(122)이 접하도록 후면 하우징(110)의 해당 면에 접해 있다.As shown in FIG. 1, the hologram part 120 is in contact with a corresponding surface of the rear housing 110 so that the photosensitive layer 122 is in contact with the corresponding surface of the rear housing 110.
홀로그램부(120)의 기판(121)은 투명하거나 불투명한 재료로 이루어질 수 있고, 예를 들어, 폴리카보네이트(polycarbonate, PC), 폴리에틸렌테레프탈레이트(Polyethylene terephthalate: PET), 트리아세틸 셀룰로오스(triacetyl cellulose, TAC), 또는 실리콘 기반의 물질로 이루어져 있다.The substrate 121 of the hologram 120 may be made of a transparent or opaque material, for example, polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose, TAC), or a silicon-based material.
본 예에서, 기판(121)은 10㎛ 내지 200㎛의 두께를 가질 수 있다. 기판(121) 위에 위치하는 감광층(122)은 홀로그램 영상을 기록하기 위한 재료로 이루어져 있고, 홀로그램 영상이 저장되어 있는 부분으로서, 본 예의 감광층(122)에 저장되어 있는 홀로그램 영상은 볼륨 홀로그램(volume hologram) 영상일 수 있다.In this example, the substrate 121 may have a thickness of 10 μm to 200 μm. The photosensitive layer 122 positioned on the substrate 121 is made of a material for recording a holographic image, and is a portion in which the holographic image is stored. The holographic image stored in the photosensitive layer 122 of this example is a volume hologram ( volume hologram) image.
감광층(122)은 감광성 기록 재료인 광중합체(photopolymer)나 실버할라이드(silver halide) 등으로 이루어질 수 있다.The photosensitive layer 122 may be formed of a photopolymer or silver halide, which is a photosensitive recording material.
본 예에 사용된 홀로그램부(120)는, 이미 기술한 것처럼, 볼륨 홀로그램 영상이 저장되어 있는 볼륨 홀로그램부로서, 광중합체나 실버 할라이드로 이루어진 감광층(122)에 레이저 빔을 조사하여 원하는 대상체의 영상을 3차원(3D) 홀로그램으로 기록한 것이다.The hologram unit 120 used in this example is a volume hologram unit in which a volume hologram image is stored, as described above, by irradiating a laser beam to a photosensitive layer 122 made of a photopolymer or silver halide to obtain a desired object. The image was recorded as a 3D (3D) hologram.
이러한 볼륨 홀로그램부(120)는 표면 요철에 의해 정보를 기록하지 않고 내부 굴절률 변화로 3차원 영상을 기록하는 제작 방식에 따라 투과형 방식과 반사형 방식으로 나뉜다.The volume hologram unit 120 is divided into a transmissive type and a reflective type according to a manufacturing method in which a 3D image is recorded by changing the internal refractive index without recording information due to surface irregularities.
투과형 방식은 프레넬 홀로그램(Fresnel hologram) 방식으로 알려져 있고, 투과형 방식의 홀로그램부(120)는 도 2에 도시한 제작 장치에 의해 제작될 수 있다. The transmissive method is known as a Fresnel hologram method, and the transmissive hologram unit 120 may be manufactured by the manufacturing apparatus illustrated in FIG. 2.
즉, 도 2에 도시한 것처럼, 투과형 방식으로 볼륨 홀로그램부(120)를 제작하기 위한 제작 장치는 정해진 색상[적색(R), 녹색(G) 또는 청색(B)]의 레이저 빔(laser beam)을 출력하는 적어도 하나의 레이저 빔 조사부(211-213), 각 레이저 빔 조사부(211-213)의 전방에 위치하는 복수 개의 제1 미러(mirror)(2211-2213), 제1 미러(2211-2213)의 전방에 위치하는 셔터(shutter)(230), 셔터(230)의 전방에 위치하여 해당 레이저만을 반사시키는 빔 스플리터(beam splitter)(240), 빔 스플리터(240)의 전방의 제1 방향에 위치하는 제2 미러(222), 제2 미러(222) 다음에 위치하는 제3 미러(223), 제3 미러(223)의 전방에 위치하는 제1 공간 필터(spatial filter)(251), 빔 스플리터(240) 전방의 제2 방향(즉, 제1 방향과 직교하는 방향)에 위치하는 제4 미러(224) 및 제4 미러(224) 전방에 위치하는 제2 공간 필터(252)를 구비한다.That is, as shown in Figure 2, the manufacturing apparatus for manufacturing the volume hologram 120 in a transmissive manner is a laser beam of a predetermined color (red (R), green (G) or blue (B)). At least one laser beam irradiation unit (211-213) for outputting, a plurality of first mirror (mirror) (2211-2213) located in front of each laser beam irradiation unit (211-213), the first mirror (2211-2213) ) In front of the shutter (shutter) (230), a beam splitter (beam splitter) (240), which is located in front of the shutter 230 and reflects only the laser, in the first direction in front of the beam splitter (240) Second mirror 222 positioned, third mirror 223 positioned after second mirror 222, first spatial filter 251 positioned in front of third mirror 223, beam The splitter 240 includes a fourth mirror 224 positioned in a second direction (that is, a direction perpendicular to the first direction) in front of the splitter 240 and a second spatial filter 252 positioned in front of the fourth mirror 224. .
이때, 제1 공간 필터(251)의 전방에는 대상물(500)의 영상을 저장하기 위한 베어(bear) 홀로그램부(120a)가 위치하며, 제2 공간 필터(252)의 전방에는 베어 홀로그램부(120a)에 저장하고자 하는 대상물(object)(500)이 위치한다.At this time, in front of the first spatial filter 251, a bear hologram unit 120a for storing an image of the object 500 is located, and in front of the second spatial filter 252, a bare hologram unit 120a ) Object (object) 500 to be stored is located.
여기서, 베어 홀로그램부(120a)는 어떠한 홀로그램 영상도 저장되지 않는 빈 홀로그램부를 지칭하며, 이 베어 홀로그램부(120a) 역시 기판(121)과 홀로그램 영상이 저장될 부분인 감광층(122a)을 구비한다.Here, the bare hologram unit 120a refers to an empty hologram unit in which no hologram image is stored, and the bare hologram unit 120a also includes a substrate 121 and a photosensitive layer 122a which is a portion where the hologram image is to be stored. .
따라서, 해당 레이저 빔 조사부(211-213)에서 해당 색상의 레이저 빔이 각 해당하는 제1 미러(2211-2113)로 조사되며, 제1 미러(2211-2213)는 조사된 레이저 빔을 셔터(230) 쪽으로 반사한다.Therefore, the laser beam of the corresponding color is irradiated from the corresponding laser beam irradiation unit 211-213 to the respective first mirrors 2211-2113, and the first mirror 2211-2213 shutters the irradiated laser beams 230 ).
이때, 복수 개의 제1 미러(2211-2213)는 동일 수평선 상에 위치하므로, 각 미러(2211-2213)에서 반사되는 빛은 서로 혼합되어 혼합 레이저 빔으로서 셔터(230) 쪽으로 입사된다.At this time, since the plurality of first mirrors 2211-2213 are located on the same horizontal line, the light reflected from each of the mirrors 2211-2213 is mixed with each other and enters the shutter 230 as a mixed laser beam.
도 2에는 각각 해당 색상(즉, 적색, 녹색 및 청색)의 레이저 빔을 조사하는 세 개의 레이저 빔 조사부(211-213)가 도시되어 있지만, 이미 기술한 것처럼, 하나 또는 두 개의 레이저 빔 조사부(211-213)만을 구비하거나 적어도 하나의 레이저 빔 조사부(211-213)를 구동시켜 원하는 해당 색상의 레이저 빔을 해당 제1 미러(2211-2213) 쪽으로 출력할 수 있다. 셔터(230)는 외부의 제어 동작에 따라 동작하여 제1 미러(2211-2213)에 의해 반사된 레이저 빔을 빔 스플리터(240) 쪽으로 출력하고, 빔 스플리터(240)는 셔터(230)에서 출력된 레이저 빔을 두 개의 광선속으로 분리하여 제1 방향과 제2 방향으로 출력한다.Although two laser beam irradiators 211-213 for irradiating laser beams of corresponding colors (ie, red, green, and blue) are respectively illustrated in FIG. 2, as previously described, one or two laser beam irradiators 211 -213) or by driving at least one laser beam irradiator 211-213 to output a laser beam of a desired corresponding color toward the corresponding first mirror 2211-2213. The shutter 230 operates according to an external control operation to output a laser beam reflected by the first mirror 2211-2213 toward the beam splitter 240, and the beam splitter 240 outputs from the shutter 230 The laser beam is divided into two beams and output in the first direction and the second direction.
이때, 제1 방향인 제2 미러(222) 쪽으로 출력되는 레이저 빔은 기준 빔 (reference beam)이 되고, 제2 방향인 제2 미러(224) 쪽으로 출력되는 레이저 빔은 대상물(500)로 쪽으로 조사되는 물체 빔(object beam)이 된다. At this time, the laser beam output to the second mirror 222 in the first direction is a reference beam, and the laser beam output to the second mirror 224 in the second direction is irradiated toward the object 500 Becomes an object beam.
제2 미러(222)는 제1 방향으로 출력되는 기준 빔을 제3 미러(223) 쪽으로 반사하고, 제3 미러(223)은 입사된 기준 빔을 공간 필터(251) 쪽으로 반사한다.The second mirror 222 reflects the reference beam output in the first direction toward the third mirror 223, and the third mirror 223 reflects the incident reference beam toward the spatial filter 251.
따라서, 공간 필터(251)는 입사된 기준 빔에서 공간 주파수 성분을 선택하여 출력해, 입사되는 기준 빔을 확산광으로 변환하여 베어 홀로그램부(120a) 쪽으로 조사한다.Accordingly, the spatial filter 251 selects and outputs a spatial frequency component from the incident reference beam, converts the incident reference beam into diffuse light, and irradiates it toward the bare hologram unit 120a.
또한, 빔 스플리터(240)에서 제2 방향으로 출력된 물체 빔은 제4 미러(224) 쪽으로 입사되어 제4 미러(224)에 의해 제2 공간 필터(252) 쪽으로 반사된다.In addition, the object beam output in the second direction from the beam splitter 240 is incident on the fourth mirror 224 and is reflected toward the second spatial filter 252 by the fourth mirror 224.
따라서, 제2 공간 필터(252)에 의해 2 방향으로 출력된 물체 빔은 확산광으로 변환되어 대상물(500) 쪽으로 조사된다.Accordingly, the object beam output in the two directions by the second spatial filter 252 is converted into diffused light and irradiated toward the object 500.
이로 인해, 대상물(500)에 의해 반사된 기준 빔과 제1 공간 필터(251)에서 출력되는 물체 빔은 서로 간섭을 통해 간섭 패턴을 형성해 베어 홀로그램부(120a)의 감광층(122a)에 저장하여, 대상물(500)에 대한 홀로그램 영상이 감광층(122a)에 저장되어 본 예의 홀로그램부(120)가 완성된다. For this reason, the reference beam reflected by the object 500 and the object beam output from the first spatial filter 251 form an interference pattern through interference with each other and store it in the photosensitive layer 122a of the bare hologram unit 120a. , The hologram image of the object 500 is stored in the photosensitive layer 122a to complete the hologram unit 120 of this example.
이러한 제작 장치에 의해 제작된 홀로그램부(120)는 투과형 볼륨 홀로그램부가 된다.The hologram part 120 produced by such a manufacturing apparatus becomes a transmissive volume hologram part.
다음, 도 3을 참고로 하여, 반사형 볼륨 홀로그램부(120)를 제작하는 방식을 기재한다.Next, referring to FIG. 3, a method of manufacturing the reflective volume hologram unit 120 will be described.
도 3에 도시한 것처럼, 반사형 볼륨 홀로그램부(120)의 제작 장치는 각각 해당 색상(R, G, B)의 레이저 빔을 출력하는 레이저 빔 조사부(311-313), 각 대응하는 레이저 빔 조사부(311-313)에서 출력되는 레이저 빔을 반사하는 복수 개의 미러(321-323), 복수 개의 미러(321-323) 전방에 위치하는 셔터(330) 및 셔터(330)의 전방에 위치하는 공간 필터(340)를 구비한다.As shown in FIG. 3, the manufacturing apparatus of the reflective volume hologram unit 120 includes a laser beam irradiation unit 311-313 for outputting a laser beam of a corresponding color (R, G, B), and a corresponding laser beam irradiation unit A plurality of mirrors (321-323) reflecting the laser beam output from (311-313), a plurality of mirrors (321-323), a shutter (330) positioned in front and a spatial filter positioned in front of the shutter (330) 340 is provided.
본 장치에서, 공간 필터(340)의 전방에는 베어 홀로그램부(120a)가 위치하고, 베어 홀로그램부(120a)의 뒤에는 대상물(500)이 존재한다.In the present apparatus, the bare hologram unit 120a is located in front of the spatial filter 340, and the object 500 is located behind the bare hologram unit 120a.
미러(321-323)는 다이크로 미러(dicroic mirror)이고 공간 필터(340)는 렌즈와 핀홀(pin hole) 등을 구비하고 있다. The mirrors 321-323 are dichroic mirrors, and the spatial filter 340 is provided with a lens, a pin hole, and the like.
이러한 구조의 제작 장치는 먼저, 각 레이저 빔 조사부(311-313)에서 해당 색상의 레이저 빔이 출력되면, 각 레이저 빔 조사부(311-313)에 대응되게 위치하고 있는 각 미러(321-323)는 셔터(330) 쪽으로 해당 레이저 빔을 반사한다.First, when the laser beam of the corresponding color is output from each laser beam irradiator 311-313, each of the mirrors 321-323 positioned corresponding to each laser beam irradiator 311-313 is a shutter. The laser beam is reflected toward 330.
이때, 복수 개의 미러(321-323)는 도 2와 같이 동일 수평선 상에 위치하므로, 각 미러(321-323)에서 반사되는 빛은 서로 혼합되어 혼합 레이저 빔으로서 셔터(330) 쪽으로 입사된다.At this time, since the plurality of mirrors 321-323 are located on the same horizontal line as shown in FIG. 2, the light reflected from each of the mirrors 321-323 is mixed with each other and enters the shutter 330 as a mixed laser beam.
셔터(330) 쪽으로 입사되는 혼합 레이저 빔은 셔터(330)의 개방 동작에 의해 공간 필터(340) 쪽으로 출력되고, 공간 필터(340)의 동작에 의해 확산 빔 형태로 공간 필터(340)에 의해 필터링된 레이저 빔은 베어 홀로그램부(120a)로 조사된다. 이때, 공간 필터(340)에서 출력되는 확산 빔은 기준 빔이 된다. The mixed laser beam incident toward the shutter 330 is output to the spatial filter 340 by the opening operation of the shutter 330, and filtered by the spatial filter 340 in the form of a diffused beam by the operation of the spatial filter 340. The laser beam is irradiated to the bare hologram part 120a. At this time, the diffusion beam output from the spatial filter 340 becomes a reference beam.
베어 홀로그램부(120a)로 조사된 확산 빔은 베어 홀로그램부(120a)를 투과하여 대상물(500) 쪽으로 출력되어 대상물(500)에 반사된다.The diffusion beam irradiated to the bare hologram unit 120a passes through the bare hologram unit 120a and is output toward the target object 500 and reflected by the target object 500.
따라서, 대상물(50)에 의해 반사된 반사 빔은 다시 베어 홀로그램부(120a) 쪽으로 입사된다. 이때, 대상물(500)에 의해 반사된 반사 빔은 물체 빔이 된다.Therefore, the reflected beam reflected by the object 50 is incident on the bare hologram part 120a again. At this time, the reflected beam reflected by the object 500 is an object beam.
이와 같이, 공간 필터(340)에서 출력되는 기준 빔과 대상물(500)에 의해 반사된 물체 빔은 모두 베어 홀로그램부터(120a) 쪽으로 입사되므로, 이들 기준 빔과 물체 빔의 간섭에 따른 간섭 패턴은 베어 홀로그램부(120a)의 감광층(122a)에 기록되어 대상물(500)에 대한 영상 정보가 감광층(122a)에 저장된다. 이로 인해, 본 예의 볼륨 홀로그램부(120)가 완성된다. As described above, since both the reference beam output from the spatial filter 340 and the object beam reflected by the object 500 are incident from the bare hologram toward 120a, the interference pattern due to the interference between the reference beam and the object beam is bare It is recorded on the photosensitive layer 122a of the hologram unit 120a and image information on the object 500 is stored in the photosensitive layer 122a. Due to this, the volume hologram unit 120 of this example is completed.
이러한 제작 장치에 의해 제작된 본 예의 홀로그램부(120)는 반사형 볼륨 홀로그램부이다.The hologram unit 120 of this example produced by such a manufacturing apparatus is a reflective volume hologram unit.
이와 같이, 본 예의 홀로그램부(120)는 반사형 또는 투과형의 볼륨 홀로그램부가 모두 이용될 수 있다. As such, the hologram unit 120 of the present example may be a reflective or transmissive volume hologram unit.
홀로그램부(120)의 기판(1211) 상부면에 위치하는 보호층(130)의 노출면은 휴대 단말의 본체(예, 메인 회로 기판)과 접하는 부분으로서, 하부에 위치한 홀로그램부(120)를 휴대 단말의 본체로부터 유입되는 수분과 먼지 등과 같은 이물질로부터 보호하기 위한 것으로, 투명한 재료로 이루어질 수 있다. The exposed surface of the protective layer 130 positioned on the upper surface of the substrate 1211 of the hologram unit 120 is a portion in contact with the body (eg, the main circuit board) of the portable terminal, and the hologram unit 120 located at the bottom is carried. To protect from foreign matter such as moisture and dust flowing from the body of the terminal, it may be made of a transparent material.
이러한 보호층(130)은, 예를 들어, 폴리카보네이트(polycarbonate, PC), 폴리에틸렌 테레프타레이트(PET), 트리아세틸셀룰로우스(TAC, triacetyl cellulose) 또는 실리콘 기반의 물질로 이루어져 있고, 두께는 20㎛ 내지 500㎛ 일 수 있다.The protective layer 130 is made of, for example, polycarbonate (PC), polyethylene terephthalate (PET), triacetyl cellulose (TAC, triacetyl cellulose) or a silicon-based material, and the thickness is It may be 20㎛ to 500㎛.
본 예에서, 보호층(130)은 하나의 층으로 이루어진 단일층이지만 이에 한정되지 않고 서로 다른 재료로 이루어져 있는 두 층 이상의 복수 층으로 이루어질 수 있다. In this example, the protective layer 130 is a single layer made of one layer, but is not limited thereto, and may be made of a plurality of layers of two or more layers made of different materials.
본 예에서, 홀로그램부(120)와 그 하부의 후면 하우징(110)을 서로 접착하기 위해, 그리고 홀로그램부(120)와 그 상부의 보호층(130)을 서로 접착하기 위해, 이들 사이에는 제1 및 제2 접착층(1201, 1202)이 존재한다.In this example, in order to bond the hologram part 120 and the rear housing 110 of the lower part to each other, and to bond the hologram part 120 and the protective layer 130 of the upper part to each other, the first between them And second adhesive layers 1201 and 1202.
이러한 접착층(1201, 1202)은 홀로그램부(120)의 하부면과 상부면에 각각 도포되어 있는 접착제 또는 접착 필름[예, OCA(optical clear adhesive) 필름 등)에 의해 형성된 층으로서, 각각 10㎛ 내지 200㎛의 두께를 가질 수 있다. The adhesive layers 1201 and 1202 are layers formed by an adhesive or adhesive film (eg, optical clear adhesive (OCA) film, etc.) applied to the lower and upper surfaces of the hologram unit 120, respectively, from 10 μm to It may have a thickness of 200㎛.
이러한 제1 및 제2 접착층(1201, 1202)은 롤러(roller)나 작업자에 의해 인가되는 물리적인 압력에 의해 그 하부면과 상부면에 위치한 후면 하우징(110) 및 보호층(130)과 각각 접착된다.The first and second adhesive layers 1201 and 1202 adhere to the rear housing 110 and the protective layer 130, respectively, located on the lower and upper surfaces thereof by physical pressure applied by a roller or an operator, respectively. do.
즉, 접착제가 도포되거나 접착 필름이 위치한 홀로그램부(120)의 하부면에 후면 하우징(110)을 위치시킨 후 물리적인 힘을 가해 홀로그램부(120)의 하부면에 후면 하우징(110)을 부착하고, 접착제가 도포되거나 접착 필름이 위치한 홀로그램부(120)의 상부면에 보호층(130)을 위치시킨 후 역시 물리적인 힘을 가해 홀로그램부(120)의 상부면에 보호층(130)을 부착한다. That is, after placing the rear housing 110 on the lower surface of the hologram 120 where the adhesive is applied or where the adhesive film is located, attach the rear housing 110 to the lower surface of the hologram 120 by applying physical force and , After placing the protective layer 130 on the upper surface of the hologram portion 120 where the adhesive is applied or the adhesive film is located, a physical force is also applied to attach the protective layer 130 to the upper surface of the hologram portion 120 .
이러한 구조를 갖는 휴대 단말용 후면 덮개(1)에서 후면 하우징(110)을 제외하고 제1 접착층(1201)에서부터 맨 상부층인 보호층(130)의 상부면까지의 50㎛ 내지 200㎛일 수 있다. It may be 50 μm to 200 μm from the first adhesive layer 1201 to the upper surface of the protective layer 130, which is the uppermost layer, excluding the rear housing 110 from the rear cover 1 for a mobile terminal having such a structure.
이러한 본 예의 휴대 단말용 후면 덮개(1)에서 홀로그램부(120)에 기록된 홀로그램 영상이 외부로 출력되므로, 휴대 단말의 후면 덮개의 아름다움이 크게 향상되고 휴대 단말의 외관에 대한 심미성 역시 향상되어, 해당 휴대 단말의 고급화가 이루어진다.Since the hologram image recorded in the hologram unit 120 is output from the rear cover 1 for the portable terminal of this example to the outside, the beauty of the rear cover of the portable terminal is greatly improved and the aesthetics of the appearance of the portable terminal is also improved. The mobile terminal is advanced.
이때, 홀로그램부(120)에 의해 외부로 표출되는 홀로그램 영상은 입체감이 뛰어난 볼륨 홀로그램 영상이므로, 후면 단말의 고급화는 더욱더 높아져 휴대 단말의 상품 가치가 크게 향상된다. At this time, since the hologram image exposed to the outside by the hologram unit 120 is a volume hologram image having an excellent three-dimensional effect, the quality of the rear terminal is higher and the product value of the mobile terminal is greatly improved.
또한, 통상적인 휴대 단말의 후면 덮개는 주로 검은색, 금색 또는 은색 등과 같이 단색으로 되어 있어, 다양한 패턴이나 그림이 그려져 있는 휴대폰 케이스를 별도로 구매한 후 휴대 단말의 후면 덮개에 휴대폰 케이스를 장착한다. In addition, the rear cover of a typical mobile terminal is mainly of a single color, such as black, gold, or silver, and a mobile phone case on which various patterns or pictures are drawn is separately purchased, and then the mobile phone case is mounted on the rear cover of the mobile terminal.
하지만, 본 예의 휴대 단말기의 후면 덮개(1)는 자체에 다양한 영상을 출력하는 홀로그램부(120)로 인해 별도의 휴대폰 케이스를 추가로 장착할 필요가 없다. 이로 인해, 사용자는 별도의 휴대폰 케이스를 구비해야 하는 비용이 절감된다.However, the rear cover 1 of the portable terminal of this example does not need to additionally mount a separate cell phone case due to the hologram unit 120 outputting various images on itself. Due to this, the user can reduce the cost of having a separate cell phone case.
또한, 홀로그램부(120) 위에 보호층(130)이 위치하므로, 휴대 단말의 본체로부터 유입되는 이물질과 흠집으로부터 홀로그램부(120)가 보호된다. In addition, since the protective layer 130 is positioned on the hologram unit 120, the hologram unit 120 is protected from foreign substances and scratches from the main body of the portable terminal.
따라서, 홀로그램부(120) 쪽으로 먼지나 수분 등의 유입이 크게 줄어들고, 외부 충격 등으로 인해 홀로그램부(120)가 파손되거나 손상되는 위험이 크게 줄어든다.Therefore, the inflow of dust or moisture to the hologram part 120 is greatly reduced, and the risk of damage or damage to the hologram part 120 due to external impact is greatly reduced.
이로 인해, 홀로그램부(120)의 수명이 늘어나며, 이물질로 인한 홀로그램 영상의 선명도가 저하되는 현상과 흠집으로 인해 홀로그램 영상이 손상되는 현상이 크게 감소하므로, 홀로그램부(120)에서 발현되는 홀로그램 영상의 질이 향상된다. Due to this, the lifespan of the hologram 120 is increased, and the phenomenon of deterioration of the hologram image due to foreign matter and the damage of the hologram image due to scratches are greatly reduced, so that the hologram image expressed in the hologram 120 The quality is improved.
다음, 도 4를 참고로 하여, 본 발명의 다른 실시예를 설명한다.Next, another embodiment of the present invention will be described with reference to FIG. 4.
도 1과 비교하여 같은 구조를 갖고 있고 동일한 기능을 수행하고 구성요소에 대해서는 도 1과 같은 도면 부호를 부여하고 그에 대한 자세한 설명도 생략한다.Compared to FIG. 1, it has the same structure, performs the same function, and assigns the same reference numerals as in FIG. 1 to the components, and detailed description thereof is omitted.
도 1과 비교할 때, 도 4에 도시한 휴대 단말용 후면 덮개(1a)는 도 1과 동일하게, 후면 하우징(110), 후면 하우징(110) 위에 위치하는 홀로그램부(120), 홀로그램부(120) 위에 위치하는 보호층(130), 후면 하우징(110)과 홀로그램부(120) 및 홀로그램부(120)와 보호층(130) 사이에 위치하는 제1 및 제2 접착층(1201, 1202)을 구비한다.Compared to FIG. 1, the rear cover 1a for the mobile terminal shown in FIG. 4 is the same as in FIG. 1, the rear housing 110, the hologram part 120 located on the rear housing 110, and the hologram part 120 ) Is provided on the protective layer 130, the rear housing 110 and the hologram part 120 and the first and second adhesive layers 1201 and 1202 located between the hologram part 120 and the protective layer 130) do.
역시 본 예의 휴대 단말은 5세대 이동통신인 5G가 구현되는 단말일 수 있고, 이로 인해 후면 하우징(110)은 통신 신호의 송수신에 영향을 미치지 않는 재료인 유리나 플라스틱 등으로 이루어질 수 있다.Also, the portable terminal of the present example may be a terminal in which 5G, which is a 5th generation mobile communication, is implemented, so that the rear housing 110 may be made of glass or plastic, which is a material that does not affect transmission and reception of communication signals.
또한, 본 예의 휴대 단말용 후면 덮개(1a)는 이들 구성요소(110-130, 1201, 1202) 이외에도, 홀로그램부(120)와 보호층(130) 사이에 위치하는 패턴부(140)를 추가로 구비한다.In addition, the rear cover 1a for the mobile terminal of this example, in addition to these components (110-130, 1201, 1202), the hologram portion 120 and the pattern portion 140 positioned between the protective layer 130 additionally Be equipped.
패턴부(140)는 다양한 무늬나 그림과 같은 패턴이 인쇄되어 있는 시트 등으로 이루어진 패턴층(143)을 구비하는 패턴층(143)에 인쇄된 패턴이 홀로그램부(120)이 영상과 함께 외부로 출력될 수 있도록 하는 부분이다.In the pattern unit 140, the pattern printed on the pattern layer 143 including the pattern layer 143 made of a sheet on which patterns such as various patterns or pictures are printed, the hologram unit 120 is external to the image. This is the part that can be printed.
이러한 패턴부(140)는 홀로그램부(120) 위에 위치하는 패턴용 베이스층(141)과, 패턴용 베이스층(141)) 위에 위치하는 프라이머층(primer layer)(142), 프라이머층(142) 위에 위치하는 패턴층(1430)을 구비할 수 있다. The pattern part 140 includes a pattern base layer 141 located on the hologram part 120, a primer layer 142 located on the pattern base layer 141, and a primer layer 142. A pattern layer 1430 positioned above may be provided.
홀로그램부(120) 위에 위치하는 패턴용 베이스층(141)은 패턴층(143)을 지지하고 보호하며 패턴층(143)의 유통을 용이하기 하기 위한 것으로, 투명한 재료로 이루어져 있다. The base layer 141 for a pattern located on the hologram part 120 supports and protects the pattern layer 143 and facilitates distribution of the pattern layer 143, and is made of a transparent material.
프라이머층(142)은 패턴용 베이스층(141)의 해당 면에 도포되는 프라이머(primer)에 의해 형성되는 층으로서, 하부의 패턴용 베이스층(141)과 패턴층(143)을 부착하기 위한 것이다.The primer layer 142 is a layer formed by a primer applied to a corresponding surface of the base layer 141 for a pattern, and is for attaching the lower pattern base layer 141 and the pattern layer 143. .
이러한 프라이머층(142)에 의해 패턴 베이스층(141)의 표면 균일도가 향상되어 임프린팅을 위한 레진코팅 또는 패턴이 인쇄된 시트(예 패턴층(143)과의 접착 강도가 향상되며, 홀로그램부(120)를 보호하게 된다. The surface uniformity of the pattern base layer 141 is improved by the primer layer 142, thereby improving the adhesion strength of the resin coating for imprinting or the sheet on which the pattern is printed (eg, the pattern layer 143) and the hologram part ( 120).
따라서, 프라이머층(142)에 의해, 상부에 위치하는 패턴층(143)과 패턴용 베이스층(141) 간의 밀착성을 향상시켜 안정적으로 패턴층(143)이 패턴용 베이스층(141)에 부착되어 위치하도록 한다. Therefore, by improving the adhesion between the pattern layer 143 and the pattern base layer 141 positioned on the top by the primer layer 142, the pattern layer 143 is stably attached to the pattern base layer 141 Position it.
패턴층(143)은 이미 기술한 것처럼, 다양한 무늬나 그림과 같은 패턴이 인쇄되어 있는 층으로서, 시트 형태로 이루어질 수 있다. 이때, 자외선(UV)을 이용한 임프린팅 공정(imprinting)을 이용하여 해당 시트나 층에 해당 패턴이 인쇄될 수도 있다.As described above, the pattern layer 143 is a layer on which various patterns or patterns such as pictures are printed, and may be formed in a sheet form. At this time, the pattern may be printed on the corresponding sheet or layer using an imprinting process using ultraviolet (UV) light.
따라서, 이러한 패턴층(143)은 원하는 패턴이 인쇄된 시트를 프라이머를 이용하여 패턴용 베이스층(141)에 부착하고, 이로 인해, 패턴층(143)과 패턴용 베이스층(141) 사이에 프라이머층(142)이 위치한다.Therefore, the pattern layer 143 attaches the sheet on which the desired pattern is printed to the base layer 141 for a pattern using a primer, and thereby, a primer between the pattern layer 143 and the base layer 141 for a pattern. Layer 142 is located.
이때, 홀로그램부(120)는 패턴층(150)보다 하부에 위치하여 즉, 외부에 좀 더 인접하게 위치한다. 이로 인해, 외부로부터 홀로그램부(120) 쪽으로 유입되는 빛에 의해 홀로그램부(120)의 감광층(122)에 기록된 영상은 좀 더 선명하게 외부로 출력될 수 있다. At this time, the hologram portion 120 is located below the pattern layer 150, that is, it is located a little more adjacent to the outside. For this reason, an image recorded in the photosensitive layer 122 of the hologram unit 120 by light flowing from the outside toward the hologram unit 120 may be output to the outside more clearly.
이처럼, 영상을 출력하는 홀로그램부(120) 상부에 패턴이 인쇄되어 있는 패턴부(140)이 위치하므로, 홀로그램부(120)에서 출력되는 홀로그램 영상은 패턴부(140)에 인쇄되어 있는 패턴과 함께 심미적 효과를 향상시켜 최종적으로 홀로그램 이미지 정보가 외부로 출력된다.As described above, since the pattern unit 140 on which the pattern is printed is located on the hologram unit 120 for outputting an image, the hologram image output from the hologram unit 120 together with the pattern printed on the pattern unit 140 By improving the aesthetic effect, the holographic image information is finally output to the outside.
따라서, 이러한 패턴부(140)의 이미지와 함께 외부로 표출되는 홀로그램 영상은 더욱 신비롭고 아름다워져, 사용자의 만족도가 향상되며 해당 휴대 단말의 고급화가 이루어진다. Accordingly, the hologram image exposed to the outside along with the image of the pattern unit 140 becomes more mysterious and beautiful, improving user satisfaction, and upgrading the portable terminal.
패턴부(140) 위에 위치하는 보호층(130)은 이미 기술한 것과 유사하게 휴대 단말의 본체로부터 유입되는 이물질로부터 패턴부(140)를 보호하기 위한 것이다.The protective layer 130 positioned on the pattern portion 140 is for protecting the pattern portion 140 from foreign matter flowing from the main body of the portable terminal, similar to that already described.
본 예에서, 보호층(130) 하부에 위치하는 제2 접착층(1202)은 도 1과 달리 보호층(130)과 패턴부(140)를 서로 부착하기 위한 것이다.In this example, the second adhesive layer 1202 positioned under the protective layer 130 is for attaching the protective layer 130 and the pattern portion 140 to each other unlike FIG. 1.
또한, 홀로그램부(120)와 패턴부(140) 사이에는 제3 접착층(1501)이 존재하며, 이 제2 접착층(1501)은 홀로그램부(120)의 상부면에 도포되는 접착제 또는 접착필름에 의해 형성되는 층으로서, 홀로그램부(120) 위에 패턴부(140)를 부착하기 위한 것이다.In addition, a third adhesive layer 1501 exists between the hologram unit 120 and the pattern unit 140, and the second adhesive layer 1501 is formed by an adhesive or adhesive film applied to the upper surface of the hologram unit 120. As a layer to be formed, it is for attaching the pattern portion 140 on the hologram portion 120.
이를 위해, 작업자나 롤러 등을 통해 홀로그램부(120)의 상부면에 투명한 접착제가 도포되거나 접착 필름이 부착될 수 있고, 그 위에 패턴부(140)의 하부면이 접착제가 도포되거나 접착 필름이 부착된 홀로그램부(120)의 상부면에 위치한다.To this end, a transparent adhesive may be applied or an adhesive film may be applied to the upper surface of the hologram part 120 through an operator or a roller, etc., and an adhesive film may be applied to the lower surface of the pattern part 140 on it. It is located on the upper surface of the hologram part 120.
그런 다음, 롤러나 작업자 등에 의해 노출된 패턴부(140)의 상부면으로 물리적인 힘이 가해지면, 패턴부(140)는 접착제나 접착 필름에 의해 그 하부에 위치한 홀로그램부(120)와 접착되며, 홀로그램부(120)와 패턴부(140) 사이에 위치한 접착제나 접착 필름은 제3 접착층(1501)이 된다. Then, when a physical force is applied to the upper surface of the pattern portion 140 exposed by a roller or a worker, the pattern portion 140 is adhered to the hologram portion 120 located thereunder by an adhesive or an adhesive film. , The adhesive or adhesive film positioned between the hologram part 120 and the pattern part 140 becomes the third adhesive layer 1501.
이와 같이, 본 예에 따른 휴대 단말용 후면 덮개(1a)는 후면 하우징(110)에 위치하는 홀로그램부(120)을 구비하고 있는 홀로그램 부분(100) 위에 패턴층(143)을 구비하는 패턴 부분(200)이 위치하고 있다.As such, the rear cover 1a for a mobile terminal according to the present example includes a pattern portion 143 having a pattern layer 143 on the hologram portion 100 having the hologram portion 120 located on the rear housing 110 ( 200) is located.
이때, 제1 접착층(1201)에서부터 제3 접착층(1501)까지의 두께인 홀로그램 부분(100)의 두께는 50㎛ 내지 200㎛이일 수 있고, 패턴부(140)의 하부면에서부터 보호막(130)까지인 패턴 부분(200)의 총 두께는 50㎛ 내지 200㎛일 수 있다.At this time, the thickness of the hologram portion 100, which is the thickness from the first adhesive layer 1201 to the third adhesive layer 1501, may be 50 μm to 200 μm, and from the lower surface of the pattern portion 140 to the protective film 130 The total thickness of the phosphorus pattern portion 200 may be 50 μm to 200 μm.
따라서, 이미 기술한 것처럼, 패턴층(143)에 의해 홀로그램부(120)에서 출력되는 홀로그램 영상의 심미감이 더욱 향상되어, 사용자의 만족도가 증가하며 휴대 단말의 고급화가 크게 향상된다.Therefore, as described above, the aesthetic sense of the hologram image output from the hologram unit 120 by the pattern layer 143 is further improved, so that the user's satisfaction increases and the quality of the mobile terminal is greatly improved.
다음, 도 5를 참고로 하여, 본 발명의 또 다른 실시예에 따른 휴대 단말용 후면 덮개(1b)를 설명한다.Next, referring to FIG. 5, a rear cover 1b for a mobile terminal according to another embodiment of the present invention will be described.
도 4에 도시한 휴대 단말용 후면 덮개(1a)와 비교할 때, 본 예의 휴대 단말용 후면 덮개(1b)는 홀로그램 부분(100a) 및 패턴 부분(200a)의 일부 구조가 각각 도 4의 홀로그램 부분(100) 및 패턴 부분(200)과 상이하다. 따라서, 동일한 재료로 이루어져 있고 같은 기능을 하는 구성요소에 대해서는 도 4와 동일한 도면 부호를 부여하였다.Compared with the rear cover 1a for a mobile terminal illustrated in FIG. 4, the rear cover 1b for the mobile terminal of this example has a partial structure of the hologram portion 100a and the pattern portion 200a, respectively, respectively. 100) and the pattern portion 200. Therefore, the same reference numerals as those in Fig. 4 are given to components made of the same material and functioning the same.
즉, 도 5에 도시한 것처럼, 본 예의 휴대 단말용 후면 덮개(1b)의 홀로그램 부분(100a)은 후면 하우징(110)과 홀로그램부(120) 사이에 보호층(131)이 추가로 위치하며, 홀로그램부(120) 위에는 패턴부(140a)가 위치하며, 패턴부(140a) 위에 보호층(130)이 위치한다. That is, as illustrated in FIG. 5, the hologram part 100a of the rear cover 1b for the mobile terminal of the present example further includes a protective layer 131 between the rear housing 110 and the hologram part 120, The pattern part 140a is positioned on the hologram part 120, and the protective layer 130 is located on the pattern part 140a.
또한, 홀로그램 부분(100a)은 서로 인접한 부분 간의 접합을 위한 접착층(1201, 1501)과 접합 필름(171)을 구비한다.In addition, the hologram portion 100a includes adhesive layers 1201 and 1501 and a bonding film 171 for bonding between portions adjacent to each other.
접착층(1201)은 보호층(131)과 홀로그램부(120) 사이를 접합하기 위한 것이고, 접착층(1501)은 홀로그램부(120)와 패턴부(140a)를 서로 접합하기 위한 것이며, 접합 필름(171)은 후면 하우징(110)과 홀로그램부(120)을 접합하기 위한 것이다. The adhesive layer 1201 is for bonding between the protective layer 131 and the hologram part 120, and the adhesive layer 1501 is for bonding the hologram part 120 and the pattern part 140a to each other, and the bonding film 171 ) Is for bonding the rear housing 110 and the hologram part 120.
또한, 패턴 부분(200a)은 홀로그램 부분(100a)의 맨 상부에 위치하는 제2 접착층(1202)에 부착되어 있는 패턴용 베이스층(141), 패턴용 베이스층(141) 위에 위치하는 패턴층(143) 및 패턴층(143) 위에 위치하는 보호층(130)을 구비한다. In addition, the pattern portion 200a is a pattern base layer 141 attached to the second adhesive layer 1202 positioned on the top of the hologram portion 100a, and a pattern layer located on the pattern base layer 141 ( 143) and a protective layer 130 positioned on the pattern layer 143.
이때, 패턴용 베이스층(141)과 패턴층(143) 사이에는 접착 필름(예, 제2 접착 필름)(172)이 위치하고 패턴부(140a)와 보호층(130) 사이에는 접착층(1202)이 위치한다. At this time, an adhesive film (eg, a second adhesive film) 172 is positioned between the pattern base layer 141 and the pattern layer 143, and an adhesive layer 1202 is provided between the pattern portion 140a and the protective layer 130. Located.
홀로그램 부분(100a)에서, 홀로그램부(120) 하부에 위치하는 보호층(131)은 도 4의 보호층(130)과 같이, 폴리카보네이트(polycarbonate, PC), 폴리에틸렌 테레프타레이트(PET), 트리아세틸셀룰로우스(TAC, triacetyl cellulose) 또는 실리콘 기반의 물질로 이루어져 있고, 두께는 20㎛ 내지 500㎛일 수 있다.In the hologram part 100a, the protective layer 131 positioned under the hologram part 120 is polycarbonate (PC), polyethylene terephthalate (PET), and tree, as in the protective layer 130 of FIG. 4. It consists of acetyl cellulose (TAC, triacetyl cellulose) or a silicon-based material, the thickness may be 20㎛ to 500㎛.
후면 하우징(110)과 보호층(131) 사이에 위치하는 접착 필름(171)은 후면 하우징(110)에 보호층(131)을 안정적으로 부착하기 위한 것으로서, 실리콘(Si) 기반의 물질로 이루어져 있는 투명한 광학용 장착 필름(OCA, optical clear adhesive)으로 이루어질 수 있다.The adhesive film 171 positioned between the rear housing 110 and the protective layer 131 is for stably attaching the protective layer 131 to the rear housing 110, and is made of a silicon (Si) -based material It may be made of a transparent optical mounting film (OCA, optical clear adhesive).
이와 같이, 후면 하우징(110)의 해당 면에 별도의 접착제 도포 동작없이 접착 필름(171)을 이용하여 후면 하우징(110)에 보호층(131)을 부착하므로, 제조 공정이 좀더 용이하고 단순하여 제조 시간이 절감된다. As such, since the protective layer 131 is attached to the rear housing 110 by using the adhesive film 171 without a separate adhesive application operation on the corresponding surface of the rear housing 110, the manufacturing process is easier and simpler to manufacture Time is saved.
대안적인 예에서, 접착 필름(171, 172)은 필름이 아니라 접착제 등이 도포되어 형성된 층 형태, 즉 접착층으로 구현될 수 있다.In an alternative example, the adhesive films 171 and 172 may be embodied in a layer form formed by applying an adhesive or the like, not a film, that is, an adhesive layer.
또한, 패턴 부분(200a)의 경우, 도 4와 비교할 때, 이미 기술한 것처럼, 패턴층(143)은 제2 접착 필름(제2 접착 필름)(172)을 이용하여 패턴용 베이스층(141)에 위치한다. In addition, in the case of the pattern portion 200a, as compared with FIG. 4, as already described, the pattern layer 143 uses the second adhesive film (second adhesive film) 172 to base the pattern layer 141 Is located in
이때, 제2 접착 필름(172) 역시 광학용 장착 필름(OCA)으로 이루어져 있다. At this time, the second adhesive film 172 is also made of an optical mounting film (OCA).
본 예의 경우, 도 4에 도시한 프라이머층(142)은 생략되지만, 사용될 수 있고 이런 경우 패턴용 베이스층(141)과 패턴층(143) 사이에 위치한 접착 필름(172)은 생략될 수 있다.In this example, the primer layer 142 shown in FIG. 4 is omitted, but may be used, and in this case, the adhesive film 172 positioned between the pattern base layer 141 and the pattern layer 143 may be omitted.
이러한 휴대 단말용 후면 덮개(1b)에서, 홀로그램 부분(100a)의 두께는 10㎛ 내지 200㎛이다.In the rear cover 1b for the portable terminal, the thickness of the hologram portion 100a is 10 μm to 200 μm.
또한, 패턴 부분(200a)의 두께 역시 10㎛ 내지 200㎛이다.In addition, the thickness of the pattern portion 200a is also 10 μm to 200 μm.
다음, 도 6을 참고하여, 또 다른 실시예에 따른 휴대 단말용 후면 덮개(1c)를 설명한다.Next, referring to FIG. 6, a rear cover 1c for a mobile terminal according to another embodiment will be described.
역시 도 4와 비교하여 동일한 구성요소에 대해서는 도 4와 같은 도면 부호를 부여한다.Again, the same components as in FIG. 4 are given the same reference numerals as in FIG. 4.
도 4와 도 6을 비교하면, 도 6에 도시한 휴대 단말용 후면 덮개(1c)에서 패턴부(140c)는 패턴용 베이스층(141)이 생략되다.4 and 6, in the rear cover 1c for the mobile terminal shown in FIG. 6, the pattern layer 140c is omitted from the pattern base layer 141.
따라서, 패턴층(143)은 프라이머를 이용하여 홀로그램부(120)와 접합되므로, 패턴부(140b)는 패턴층(143) 및 홀로그램부(120)와 패턴층(143) 사이에 위치하는 프라이머층(142)을 구비한다.Therefore, since the pattern layer 143 is bonded to the hologram part 120 using a primer, the pattern part 140b is a primer layer positioned between the pattern layer 143 and the hologram part 120 and the pattern layer 143 (142).
이러한 도 6의 특징은 도 5의 예에도 적용될 수 있음은 당연하다. 이런 경우, 도 5에 도시한 패턴용 베이스층(141) 및 패턴용 베이스층(141)과 패턴층(143)과의 접착을 위한 접착 필름(172)이 생략되면, 패턴용 베이스층(141)과 패턴층(143)은 프라이머에 의해 서로 접착된다. It is natural that the features of FIG. 6 can be applied to the example of FIG. 5 as well. In this case, if the base layer 141 for patterning and the adhesive film 172 for bonding between the base layer 141 for patterning and the pattern layer 143 are omitted, the base layer for pattern 141 And the pattern layer 143 are adhered to each other by a primer.
이와 같이, 패턴층(143)이 프라이머를 이용하여 홀로그램부(120) 위에 바로 부착되므로, 패턴용 베이스층(141) 및 패턴용 베이스층(141)과 홀로그램부(120)를 부착하기 위한 접착층(1501)이 생략된다. As described above, since the pattern layer 143 is directly attached onto the hologram part 120 using a primer, the base layer 141 for the pattern and the adhesive layer for attaching the pattern base layer 141 and the hologram part 120 ( 1501) is omitted.
따라서, 휴대 단말용 후면 덮개(1c)의 제조 비용과 제조 시간이 크게 줄어든다.Therefore, manufacturing cost and manufacturing time of the rear cover 1c for the portable terminal are greatly reduced.
위에 기술한 예와 달리, 대안적인 예에서, 보호층(130, 131)은 생략될 수 있다.Unlike the examples described above, in alternative examples, the protective layers 130 and 131 may be omitted.
다른 대안적인 예에서, 보호층(130)과 패턴부(140, 140a, 140b) 사이 역시 접합 필름으로 서로 부착될 수 있다. In another alternative example, the protective layer 130 and the pattern portions 140, 140a, and 140b may also be attached to each other with a bonding film.
이상, 본 발명의 휴대 단말용 후면 덮개의 실시예들에 대해 설명하였다. 본 발명은 상술한 실시예 및 첨부한 도면에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자의 관점에서 다양한 수정 및 변형이 가능할 것이다. 따라서 본 발명의 범위는 본 명세서의 청구범위뿐만 아니라 이 청구범위와 균등한 것들에 의해 정해져야 한다.The embodiments of the rear cover for a portable terminal of the present invention have been described above. The present invention is not limited to the above-described embodiments and the accompanying drawings, and various modifications and variations will be possible from the viewpoint of those skilled in the art to which the present invention pertains. Therefore, the scope of the present invention should be defined not only by the claims of the present specification, but also by the equivalents of the claims.

Claims (14)

  1. 투명한 재료로 이루어진 있는 후면 하우징,Rear housing made of transparent material,
    상기 후면 하우징 위에 위치하고, 홀로그램 영상을 출력하는 홀로그램부, 그리고A hologram unit located on the rear housing and outputting a hologram image, and
    상기 홀로그램부에 위치하는 보호층Protective layer located on the hologram
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
  2. 제1항에서,In claim 1,
    상기 홀로그램 영상은 볼륨 홀로그램 영상인 휴대 단말용 후면 덮개.The holographic image is a back cover for a mobile terminal that is a volume holographic image.
  3. 제1항에서,In claim 1,
    상기 보호층은 폴리카보네이트(polycarbonate, PC), 폴리에틸렌 테레프타레이트(PET), 트리아세틸셀룰로우스(TAC, triacetyl cellulose) 또는 실리콘 기반의 물질로 이루어져 있는 휴대 단말용 후면 덮개.The protective layer is a polycarbonate (polycarbonate, PC), polyethylene terephthalate (PET), triacetyl cellulose (TAC, triacetyl cellulose) or a back cover for a mobile terminal made of a silicon-based material.
  4. 제1항에서,In claim 1,
    상기 후면 하우징과 상기 홀로그램부 사이 그리고 홀로그램부와 상기 보호층 사이에 각각 위치하는 제1 및 제2 접착층First and second adhesive layers positioned between the rear housing and the hologram and between the hologram and the protective layer, respectively.
    을 더 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal further comprising a.
  5. 제4항에서,In claim 4,
    상기 제1 접착층에서부터 상기 보호층까지의 두께는 50㎛ 내지 200㎛인 휴대 단말용 후면 덮개.The thickness of the first adhesive layer to the protective layer is 50 μm to 200 μm.
  6. 제1항에서,In claim 1,
    상기 홀로그램부과 상기 보호층 사이에 위치하는 패턴부A pattern portion located between the hologram portion and the protective layer
    를 더 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal further comprising a.
  7. 제6항에서,In claim 6,
    상기 패턴부는, The pattern portion,
    상기 홀로그램부 위에 위치하는 패턴용 베이스층,The base layer for a pattern located on the hologram part,
    상기 패턴용 베이스층과 접해 있는 프라이머층, 그리고Primer layer in contact with the base layer for the pattern, and
    상기 프라이머층과 접해 있는 패턴층Pattern layer in contact with the primer layer
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
  8. 제7항에서,In claim 7,
    상기 후면 하우징과 상기 홀로그램부 사이에 위치하는 제1 접착층,A first adhesive layer located between the rear housing and the hologram,
    상기 패턴부와 상기 보호층 사이에 위치하는 제2 접착층, 그리고A second adhesive layer positioned between the pattern portion and the protective layer, and
    상기 홀로그램부와 상기 패턴부 사이에 위치하는 제3 접착층A third adhesive layer positioned between the hologram portion and the pattern portion
    을 더 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal further comprising a.
  9. 제6항에서,In claim 6,
    상기 패턴부는, The pattern portion,
    상기 홀로그램부과 접해있는 프라이머층, 그리고Primer layer in contact with the hologram, and
    상기 프라이머층과 접해있는 패턴층Pattern layer in contact with the primer layer
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
  10. 제9항에서,In claim 9,
    상기 후면 하우징과 상기 홀로그램부 사이에 위치하는 제1 접착층, 그리고A first adhesive layer positioned between the rear housing and the hologram, and
    상기 패턴부와 상기 보호층 사이에 위치하는 제2 접착층A second adhesive layer located between the pattern portion and the protective layer
    을 더 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal further comprising a.
  11. 후면 하우징,Rear housing,
    상기 후면 하우징 위에 위치하는 제1 보호층,A first protective layer located on the rear housing,
    상기 제1 보호층 위에 위치하고, 홀로그램 영상을 출력하는 홀로그램부,A hologram unit positioned on the first protective layer and outputting a holographic image,
    상기 홀로그램부에 위치하는 패턴부, 그리고A pattern portion positioned on the hologram portion, and
    상기 패턴부 위에 위치하는 제2 보호층A second protective layer on the pattern portion
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
  12. 제11항에서,In claim 11,
    상기 홀로그램 영상은 볼륨 홀로그램 영상인 휴대 단말용 후면 덮개.The holographic image is a back cover for a mobile terminal that is a volume holographic image.
  13. 제11항에서,In claim 11,
    상기 패턴부는, The pattern portion,
    상기 홀로그램부 위에 위치하는 패턴용 베이스층,The base layer for a pattern located on the hologram part,
    상기 패턴용 베이스층 위에 위치하는 패턴층, 그리고A pattern layer positioned on the pattern base layer, and
    상기 패턴용 베이스층과 상기 패턴층 사이에 위치하는 제1 접착 필름A first adhesive film positioned between the pattern base layer and the pattern layer
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
  14. 제11항에서,In claim 11,
    상기 패턴부는, The pattern portion,
    상기 홀로그램부과 접해있는 프라이머층, 그리고Primer layer in contact with the hologram, and
    상기 프라이머층과 접해있는 패턴층Pattern layer in contact with the primer layer
    을 포함하는 휴대 단말용 후면 덮개.A rear cover for a mobile terminal comprising a.
PCT/KR2019/011820 2018-09-11 2019-09-11 Rear cover for mobile terminal WO2020055157A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980059681.XA CN112703110B (en) 2018-09-11 2019-09-11 Back cover for portable terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2018-0108098 2018-09-11
KR20180108098 2018-09-11

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KR20110121420A (en) * 2010-04-30 2011-11-07 김현수 Method of forming hologram pattern on plastic molding
KR20120065811A (en) * 2010-12-13 2012-06-21 (주)엘지하우시스 In-mold injection product with possibility for hologram realization and method of manufacturing the in-mold injection product
WO2013083967A2 (en) * 2011-12-05 2013-06-13 Worldmark International Limited Improvements in or relating to injection moulded components
WO2018029294A1 (en) * 2016-08-12 2018-02-15 Covestro Deutschland Ag Shaped body having a volume hologram and method for production thereof

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WO2012118257A1 (en) * 2011-02-28 2012-09-07 (주)모비테크 Protective cover for an lcd for use with mobile terminals, and method for manufacturing a transmissive protective layer for producing same
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JP2000132072A (en) * 1998-10-29 2000-05-12 Dainippon Printing Co Ltd Volume hologram laminated body and label for manufacture of same
KR20110121420A (en) * 2010-04-30 2011-11-07 김현수 Method of forming hologram pattern on plastic molding
KR20120065811A (en) * 2010-12-13 2012-06-21 (주)엘지하우시스 In-mold injection product with possibility for hologram realization and method of manufacturing the in-mold injection product
WO2013083967A2 (en) * 2011-12-05 2013-06-13 Worldmark International Limited Improvements in or relating to injection moulded components
WO2018029294A1 (en) * 2016-08-12 2018-02-15 Covestro Deutschland Ag Shaped body having a volume hologram and method for production thereof

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