KR20100048945A - Light emitting structure with metal thin layer sputtered - Google Patents

Abstract

PURPOSE: A light emitting structure sputtered with a metal thin film is provided to prevent the separation of a metal thin film from the outer surface of a transparency plastic projectile product. CONSTITUTION: A light emitting structure sputtered with a metal thin film comprises a plastic projectile product(15) and a metal thin film layer(17). The plastic projectile product is made of a light light-transmissive material and the light can penetrate through the plastic projectile product. The metal thin film layer is deposited to the inner surface or the outer surface of plastic projectile product to 300~1200 angstroms thickness.

Description

Light Emitting Structure with Metal Thin Layer Sputtered

The present invention relates to a light emitting structure in which a metal thin film is deposited, and more particularly, a metal thin film layer having a fine thickness is formed on the surface of a plastic injection-molded product by light sputtering to reflect an object on the metal thin film layer like a mirror. When the light emitting device is electrically switched on, a light emitting device is installed inside the plastic injection molding, so that the light of the light emitting device passes through the metal thin film layer so that the light emitting device can recognize the light emitted by the light emitting device even at night. It is about.

In general, a metal film is plated on a plastic surface to give the impression of a metal when viewed from the outside, and products that reflect an object like a mirror are sold. These products include emblems made from the logos of automakers, and metal-plated upholstery parts.

For example, when a metal film is coated on an emblem of a plastic material, the metal film is applied to the emblem, but the user can feel the metallicity of the emblem.

Emblems are images representing manufacturers or products, and are widely used in automobiles, apartments, and industrial products. In particular, in the case of automobiles, various kinds of emblems are installed to affect not only the image of the automobile but also the exterior design.

Such emblems are usually molded by injecting plastic into the manufacturer's logo, and forming a metal plating layer such as chromium on the outer surface thereof so that the metallic feeling can be felt. The emblem is then attached to the front or rear of the vehicle using double-sided tape or the like.

The conventional metal layer-plated emblem can be easily recognized due to natural light during the day, but there is a problem that the value of the emblem is not fully expressed because it is not visible at night or in a dark place.

This is because, in the manufacture of the emblem, since the metal plating layer is applied to the outer surface of the plastic injection molding, even if a light emitting device such as an LED is installed in the emblem, the light is not emitted to the outside of the emblem.

 In addition to the above emblem, the product coated with the metal layer on the surface of the plastic injection molding gave the user a metallic effect, but the light is emitted through the plated metal layer even when a light emitting device is installed inside due to the plated metal layer. There was no effect, and for this reason, there was no conventional product used as a light emitting device at night while producing a metal effect during the day.

In addition, motorcycle users want to install a motorcycle's turn signal with a metal layer such as chrome on the surface, but the turn signal coated with a metal layer does not emit light through the surface of the turn signal at night. We cannot use for motorcycle direction indicators.

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to install a light emitting device inside the plastic injection molding having a light transmissive light passing through the metal thin film deposited on the surface of the injection molding By providing a light emitting structure is deposited a metal thin film that emits light at night.

Another object of the present invention is to provide a light emitting structure in which a metal film is deposited which can prevent the metal thin film layer from being easily peeled off from the outer surface of the transparent plastic injection molding by forming a paint layer between the metal thin film layer and the outer surface of the transparent plastic injection molding. .

In order to achieve the object of the present invention as described above, the light emitting structure in which the metal film is deposited according to the present invention is formed of a light-transmitting material, the plastic injection molding which can transmit light; And a metal thin film layer deposited on the inner surface or the outer surface of the injection molded product at a thickness of 300 mW to 1200 mW,

The metal used in the metal thin film layer is characterized in that any one of aluminum, nickel, chromium, silver, gold, tin,

The visible light transmittance of the metal thin film layer is characterized in that the range of 3% to 5%, wherein the light emitting structure comprises at least one light emitting device for emitting light when the power supply, the metal thin film layer is sputtering or The thin film is deposited on the surface of the injection molding by an evaporation method.

In addition, the automotive emblem, which is an embodiment of the light emitting structure in which the metal thin film layer is deposited according to the present invention, has a logo formed thereon, and is formed of a light transmissive material, which allows light to pass therethrough; An emblem including a metal thin film layer through which the light transmitted through the injection molding can be transmitted by being formed in the inner surface or the outer surface of the injection molding in a thickness of preferably 300 Å to 1200 ;; And a light emitting device disposed on a rear surface of the emblem to emit light when power is supplied, wherein the visible light transmittance of the emblem and the metal thin film layer is within a range of 3% to 5%.

As described above, the light emitting structure in which the metal film is deposited according to the embodiment of the present invention is formed in a thickness range through which light can pass through the transparent plastic injection molded product formed by injecting plastic and the metal thin film layer formed on the outer surface thereof. The light emitting device may transmit light to recognize a light emitting structure in which a metal film is deposited at night.

In addition, the coating layer is additionally formed between the plastic injection molding and the metal thin film layer, thereby increasing the adhesion between the metal thin film layer and the plastic injection molding.

In addition, in daytime or bright places, the texture of the metal metal is more vivid due to the reflection of ambient light. In the night or dark places, light emitted from the light emitting element can be vividly transmitted through the plastic injection-molded plastic film. There is an advantage.

Hereinafter, the emblem assembly which is an embodiment of the light emitting structure in which the metal thin film is deposited according to the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of an emblem assembly which is an embodiment of a light emitting structure in which a metal thin film is deposited according to the present invention. FIG. 2 is a side cross-sectional view showing an internal structure of an emblem assembly which is an embodiment of a light emitting structure in which a metal thin film according to the present invention shown in FIG. 1 is deposited.

1 and 2, the emblem assembly, which is an embodiment of the light emitting structure in which the metal thin film is deposited according to the present invention, is formed by a plastic injection and is formed of a light transmissive material. Emblem (3) through which the light can be transmitted, Cover (Cover; 5) coupled to the back of the emblem (3) and disposed between the emblem (3) and the cover (5) when the power supply And a light emitting portion 7 for emitting light.

The light emitting unit 7 according to the present invention includes a PCB substrate 13 and at least one light emitting element 11 disposed on the PCB substrate 13 to emit light upon power supply.

The PCB substrate 13 according to the present invention may be electrically connected to the power supply 9 so that power may be applied. The light emitting element 11 optionally includes a light emitting element such as a light emitting diode, an OLED, or an EL.

Therefore, when power is supplied to the PCB substrate 13, the light may be irradiated by emitting the light emitting element 11.

In this case, the light emitting element 11 may emit light of various colors. Accordingly, by appropriately selecting the light emitting device 11 of various colors, the light of various colors can be realized to feel aesthetics.

In addition, in order to implement various effects, a light emitting device 11 may be periodically turned on or off and may include a control circuit for controlling brightness.

In addition, the light emitting device 11 may be uniformly disposed on the PCB substrate 13 so that the entire area of the emblem 3 may be irradiated uniformly, or only at a portion corresponding to the logo L of the emblem 3. The light emitted by the light transmits only the logo so that the logo L may be emphasized.

At this time, the portion L1 other than the logo may be diversified in design by forming a metal thin film layer having a different color from the logo L. FIG.

FIG. 3 is an enlarged partial cross-sectional view of part “A” of FIG. 2.

Referring to FIG. 3, in the emblem assembly having the same structure as the embodiment of the present invention, the emblem 3 is a plastic injection molded product 15 on which a logo L is formed, and an outer surface of the injection molded product 15. Or a metal thin film layer 17 formed on the inner surface.

The injection molded product 15 according to the present invention can be molded with a logo of various shapes on the surface. Such an injection product 15 can be produced by various manufacturing methods, but preferably can be obtained by injecting a plastic material.

In addition, the injection molded product 15 is formed of a transparent material to have light transparency. Of course, the injection molded product 15 may be formed of a translucent material.

Therefore, the light emitted from the light emitting part 7 can transmit the emblem 3 so that the emblem assembly can be recognized from the outside. The metal thin film layer 17 deposited on the surface of the injection molding is formed on the outer surface of the injection molding 15.

Metal thin film layer 17 according to the present invention is preferably formed by a thin film deposition method such as sputtering, evaporation, chemical vapor deposition using a metal material of various materials such as chromium, silver, nickel, gold, aluminum, tin do. Among the metal materials, silver, nickel and aluminum are the most effective as products of the light emitting structure.

In addition, the metal thin film layer 17 is formed on the surface of the injection-molded product 15 at a very thin thickness and thus has light transmittance. That is, the light transmitted through the injection molded product 15 also penetrates the metal thin film layer 17 so that the light emitting structure such as an emblem assembly can be easily recognized at night, especially at night.

The visible light transmittance of the metal thin film layer 17 deposited on the surface of the transparent plastic injection molded product 15 according to the present invention is in the range of 3% to 5%. Therefore, the user cannot recognize the inside of the transparent injection molding 15 with eyes, and when the user's face or the like is illuminated on the surface of the injection molding, the surface of the injection molding 15 on which the metal thin film layer 17 is deposited is the user's face like a mirror. The back will be illuminated.

The metal thin film layer 17 according to the present invention is very thin on the outer surface or the inner surface of the emblem 3 by a thin film deposition process such as sputtering, evaporation, or chemical vapor deposition (CVD). Thickness, preferably at a thickness within the range of 300 kPa (angstroms) to 1200 kPa.

In more detail, when the metal thin film layer 17 is formed by the thin film deposition method of the sputtering method on the outer or inner surface of the injection molded product 15, the target and the injection molded product 3 are first placed in the chamber, and then argon (Ar) ) Or other reactive gas.

When the power is applied to the electrode, the injected sputtering gas Ar collides with the electrons emitted from the cathode and is excited to become Ar +, and the excited gas is attracted to the target, which is the cathode, to collide with the target.

At this time, each excited gas has the energy of hυ and the energy is transferred to the target during collision, and the plasma is released when the bonding force of the elements forming the target and the work function of the electron can be overcome. .

The generated plasma rises as much as the free stroke of electrons, and the plasma is formed when the distance between the target and the injection molded product is less than or equal to the free stroke.

At this time, by controlling the discharge amount of the plasma so that the thickness of the metal thin film layer 17 can be maintained in the range of 300 kW to 1200 kW. When the thickness of the metal thin film layer 17 is out of the above range, the light transmittance is remarkably improved, so that light is easily transmitted to the inside of the injection molded product 15 such as the emblem 3, or the like due to the deposition of the metal thin film layer 17 ( It is difficult to implement the metal texture on the surface of the surface 15, or the light transmittance of the light emitting element 11 is passed through the injection molding 15 even when the light emitting element 11 emits light because the light transmittance is significantly lowered. There is a problem that is difficult to diverge.

An extremely thin metal thin film layer 17 can be formed on the outer surface (or inner surface) of the injection molded product 15 through a thin film deposition process such as sputtering. Therefore, the emblem 3 in which the light of the light emitting element 11 emits from the outside can be recognized by the light emitted from the light emitting part 7 passing through the metal thin film layer 17 having a thickness of 300 kW (angstrom) to 1200 kW.

FIG. 4 is a partially enlarged cross-sectional view illustrating that a paint layer is formed between the front cover and the metal thin film layer shown in FIG. 3.

Referring to FIG. 4, the emblem 3, which is an embodiment of the present invention, may have the metal thin film layer 17 deposited directly on the outer surface of the injection molding 15 as described above, but the transparent paint layers 19 and 21 may be used. It may be formed further.

That is, since the first paint layer 19 is formed on the outer surface of the injection molded product 15, the adhesion between the metal thin film layer 17 and the injection molded product 15 may be improved. Therefore, the metal thin film layer 17 can be prevented from peeling off from the injection molded product 15.

In addition, a second paint layer 21 may be formed outside the metal thin film layer 17. The second paint layer 21 protects the outside of the metal thin film layer 17.

As such, the first paint layer 19, the metal thin film layer 17, and the second paint layer 21 may be sequentially stacked on the outer surface of the injection molded product 15.

5 is a partially enlarged cross-sectional view showing another embodiment of the front cover and the metal thin film layer shown in FIG.

Referring to FIG. 5, in FIG. 4, the first transparent paint layer 19, the metal thin film layer 17, and the second transparent paint layer 21 are described as being laminated on the outer side of the injection molded product 15. Is not limited to this, and as shown in FIG. 5, may also be laminated on the inner surface of the injection molded product 23.

That is, the first paint layer 25 is formed on the inner surface of the injection molding 23, the metal thin film layer 27 is formed on the outer surface of the first paint layer 25, and the outer surface of the metal thin film layer 27 is formed. The second paint layer 29 is formed.

As shown in FIGS. 4 and 5, the transparent paint layer and the metal thin film layers 17 and 27 may be selectively stacked on the inner surface or the outer surface of the injection molded products 15 and 23.

The material used for the transparent coating layer is UV, urethane, ceramic, baking paint, etc., and is applied by hard coating the transparent material in a spray type according to each characteristic. Each paint layer has a thickness of about 20 to 30 microns.

In FIG. 1, the cover 5 is coupled to the emblem 3 to seal the interior of the emblem 3, but the present invention is not limited thereto, and the cover 5 may be omitted, and the substrate 13 may be omitted. The back of the cover may replace the function of the cover.

FIG. 6 is an exploded perspective view showing that a diffuser plate is provided as another embodiment of the emblem assembly, which is an embodiment of the light emitting structure in which the metal film according to the present invention shown in FIG. 1 is deposited.

Referring to FIG. 6, the diffuser plate 32 may be further provided in the emblem assembly 30. The emblem assembly 30 of FIG. 6 has the same structure as the emblem assembly of the embodiment of FIG. 1, with the difference that the diffuser plate 32 is disposed between the emblem 34 and the light emitting portion 36.

The diffusion plate 32 includes a base 39 and a reflection surface 40 formed on the upper surface of the base 39 to reflect light.

The base 39 is large enough to be coupled to the inside of the emblem 30. In addition, through holes 38 are formed in the base 39 so that the light emitting elements 37 of the light emitting portion 36 pass. In this case, the light emitting device 37 is a side view light emitting device.

In addition, the reflective surface 40 is disposed on the upper surface of the base 39, and includes a reflective film having a constant light reflectance.

Therefore, the light irradiated from the side view type light emitting element 37 can be reflected by the reflecting surface 40 at a predetermined angle to pass through the emblem 34.

As a result, the light emitted from the light emitting part 36 can be reflected at a wider angle by the diffuser plate 32 to transmit the emblem 34.

In the above description, the case of applying the side view light emitting device is described, but a top view light emitting device may also be applied. When a top view light emitting device is used, a through hole is omitted and a flat plate diffuser is applied to the diffuser plate. Therefore, when light is emitted from the top view light emitting device, the light is transmitted through the emblem through the diffusion plate.

In the above description, the diffusion plate is provided, but the present invention is not limited thereto, and a diffusion structure may be applied to the inner surface of the emblem. That is, a diffuser structure of a shape (so-called smog shape) or a predetermined pattern is formed on the inner surface of the emblem to make it look like a fog. Therefore, the light emitted from the light emitting portion can pass through the emblem in a uniformly dispersed state through the diffusion structure.

7 is an exploded perspective view of a frame mirror which is another embodiment of a light emitting structure in which a metal thin film is deposited according to the present invention.

Referring to FIG. 7, a metal thin film is formed on the mirror surface 54 by sputtering so that the image of the object is reflected and reflected on the mirror surface 54 like a normal mirror, and the sensor 52 is moved when a person approaches near the mirror. When a person's heat or the like is sensed, the LED module corresponding to the light emitting device is electrically turned on, and an object such as a picture or a photo located at the rear portion of the mirror surface 54 is mirror surface (54). Through).

The light emitted from the LED module 62 is transmitted to an object such as a picture or a photo, and the user passes through the mirror surface 54 on which the metal thin film layer is deposited. Recognize the object.

The sensor 52 and the LED module 60 are electrically connected, and when the sensor 52 detects a heat of a person, the LED module 60 is electrically turned on to emit light. The light guide plate 58 and the heat sink 62 are installed between the LED module 60.

The frame-type mirror on which the metal thin film is deposited according to the present invention is used as a mirror in a normal case, and when a person approaches, a picture or the like disposed on the rear surface of the mirror surface 54 is reflected through the mirror surface 54. This allows the user to act as a mirror and a frame.

The light emitting structure in which the metal thin film according to the present invention is deposited can be applied to the following areas.

1.It can be applied to emblems of automobile parts, interior decoration parts inside, reflectors on outside, door scarves (lighting when door is opened), etc.

2. It can be applied to all products that designed chrome tone on the outside such as chrome handle,

3. Products that require visibility at night, such as traffic signs and letters.

4. Flashing light on Harley Daveson motorcycle: If the flashing light is not electrically turned on by applying chrome tone such as harley daveson motorcycle, the surface is metallic and the bulb inside is not visible. If the flashing light is turned on, the flashing light is emitted.

5. High-end products such as transparent crystal ornaments and various plaques: When the light emitting element installed inside is turned on, as shown in the mirror structure of FIG. 7, an image of the inner ornament or plaque is visible through the metal thin film layer. It is used as follows.

While the preferred embodiments of the present invention have been described above using specific terms, such descriptions are for illustrative purposes only, and it is obvious that various changes and modifications can be made without departing from the spirit and scope of the following claims. It's work. Such modified embodiments should not be understood individually from the spirit and scope of the present invention, but should fall within the claims appended to the present invention.

1 is an exploded perspective view of an emblem assembly which is an embodiment of a light emitting structure in which a metal thin film is deposited according to the present invention.

Figure 2 is a side cross-sectional view showing the internal structure of the emblem assembly of the embodiment of the present invention shown in FIG.

FIG. 3 is an enlarged partial cross-sectional view of part “A” of FIG. 2.

FIG. 4 is a partially enlarged cross-sectional view illustrating that a paint layer is formed between the front cover and the metal thin film layer shown in FIG. 3.

FIG. 5 is a partially enlarged cross-sectional view showing another embodiment of the front cover and the metal thin film layer shown in FIG. 3.

Figure 6 is an exploded perspective view showing that the diffusion plate is provided as another embodiment of the emblem assembly which is an embodiment of the light emitting structure in which the metal thin film is deposited according to the present invention.

7 is an exploded perspective view of a frame mirror which is another embodiment of a light emitting structure in which a metal thin film is deposited according to the present invention.

DESCRIPTION OF REFERENCE NUMERALS

3, 34: emblem 11, 37: light emitting element

15, 23: injection molding 17, 27: metal thin film layer

52: sensor 54: mirror surface

Claims (5)

Plastic injection molding material can be transmitted by being formed of a light transmitting material; And And a metal thin film layer deposited on an inner surface or an outer surface of the injection molded product at a thickness of 300 mW to 1200 mW. The method of claim 1, The metal used in the metal thin film layer is aluminum, nickel, chromium, silver, gold, tin is a light emitting structure deposited metal film, characterized in that any one. The method of claim 1 The light emitting structure of claim 1, wherein the visible light transmittance of the metal thin film layer is in a range of 3% to 5%. The method of claim 1, The light emitting structure is a light emitting structure deposited with a metal thin film, characterized in that it comprises at least one light emitting device for emitting light when the power supply. The method of claim 1, The metal thin film layer is a light emitting structure deposited with a metal thin film, characterized in that the thin film is deposited on the surface of the injection by the sputtering or evaporation method.

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