KR20080017708A - Method to manufacture transparent film keypad having hologram and the keypad - Google Patents

Method to manufacture transparent film keypad having hologram and the keypad Download PDF

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Publication number
KR20080017708A
KR20080017708A KR1020060079236A KR20060079236A KR20080017708A KR 20080017708 A KR20080017708 A KR 20080017708A KR 1020060079236 A KR1020060079236 A KR 1020060079236A KR 20060079236 A KR20060079236 A KR 20060079236A KR 20080017708 A KR20080017708 A KR 20080017708A
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South Korea
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hologram
film
key
keypad
transparent
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KR1020060079236A
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Korean (ko)
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KR100841527B1 (en
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전현옥
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주식회사 미성포리테크
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4845—Radiation curing adhesives, e.g. UV light curing adhesives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/18—Distinguishing marks on switches, e.g. for indicating switch location in the dark; Adaptation of switches to receive distinguishing marks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/008—Die stamping

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Switches (AREA)

Abstract

A method for manufacturing a transparent film keypad having a hologram and a keypad thereof are provided to improve the quality of the keypad by attaching the hologram to the bottom of the keypad and forming a spin figure on the top plane of a key film. In a method for manufacturing a transparent film keypad having a hologram, a mold(21) having a figure(1) is fabricated. A resin stamp having the figure is formed by pressing a PC resin on the mold. A UV hardening agent(11) is coated on one side of a key film(10) with a transparent PC resin, and a figure is molded by pressing the resin stamp. The key film is hardened by a UV lamp(31). The key film is matured at room temperature. A hologram(2) having a figure is designed, and a rugged part corresponding to the figure is formed on a photoresistor by irradiating a laser. A nickel stamp is formed by electro-plating the surface of the photoresistor. A UV hardening paint(11') is coated on the opposite side of the key film, and a hologram figure is formed by pressing the nickel stamp. The key film is hardened by a UV lamp(31'). A hologram forming plane of the key film is deposited. Key character is silk-printed on the transparently deposited surface.

Description

홀로그램이 형성된 투명필름 키패드 제조방법 및 그 키패드{Method to manufacture transparent film keypad having hologram and the keypad}Method for manufacturing transparent film keypad having hologram and method thereof [Method to manufacture transparent film keypad having hologram and the keypad}

도 1은 본 발명에 따른 홀로그램이 형성된 투명필름 키패드의 제조공정도.1 is a manufacturing process of the transparent film keypad formed hologram according to the present invention.

도 2는 본 발명에 따른 홀로그램이 형성된 투명필름 키패드의 단면도.Figure 2 is a cross-sectional view of the transparent film keypad formed hologram according to the present invention.

*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***

1 : 문양 2 : 홀로그램1: Glyph 2: Hologram

10 : 키필름 11,11' : UV경화도료10: key film 11,11 ': UV curing paint

21 : 금형 30,30' : UV경화실21: mold 30,30 ': UV curing room

31,31' : UV 램프 40 : 투명증착층31,31 ': UV lamp 40: transparent deposition layer

50 : 인쇄층50: printed layer

본 발명은 홀로그램이 형성된 투명필름 키패드 제조방법 및 그 키패드에 관한 것으로, 더욱 상세하게는 투명한 키필름에 홀로그램을 일체로 형성하여 키패드의 품격을 향상시키고자 하는 것이다.The present invention relates to a method for manufacturing a transparent film keypad having a hologram and a keypad thereof, and more particularly, to improve the dignity of the keypad by integrally forming a hologram on a transparent key film.

주지하다시피, 휴대용 이동통신 단말기에서 키패드는 폴리우레탄 등의 수지 필름으로 된 베이스러버의 상면에 하드타입의 합성수지 키가 나란히 부착되어 이루어지는 것으로, 여기에 적용되는 키는 합성수지를 사출성형하여서 되는 것이므로 이러한 키가 적용된 키패드의 두께가 두꺼워질 수밖에 없어 단말기의 두께 역시 두꺼워지는 한계가 있었다.As is well known, in a portable mobile communication terminal, a keypad is formed by attaching a hard-type synthetic key side by side to a top surface of a base rubber made of a resin film such as polyurethane, and the key applied thereto is formed by injection molding a synthetic resin. Since the thickness of the keypad to which the key is applied is inevitably thick, there is a limit that the thickness of the terminal is also thickened.

최근에는 휴대용 이동통신 단말기가 빠른 속도로 발전하면서 그 기능성이 강화되는 것은 물론 휴대성 향상을 위해 슬림화되어 가고 있으며, 결국 단말기를 슬림화하기 위해서는 불가분 키패드의 두께도 얇아져야 한다.Recently, as the portable mobile communication terminal develops at a high speed, its functionality is not only strengthened but also slimmed to improve portability, and eventually, in order to slim the terminal, the thickness of an inseparable keypad must be thinned.

이러한 추세에 발맞추어 최근에는 PC 등의 합성수지로 된 얇은 두께의 베이스필름의 상부에 UV경화도료를 사용하여 키탑을 성형하고, 베이스필름의 하부에 이엘램프가 인쇄된 이엘램프시트를 부착하며, 이엘램프시트의 하부에는 엑츄에이터를 갖는 실리콘층을 형성토록 함으로써 키패드를 슬림화할 수 있음은 물론 키패드 전체에서 빛이 균일하게 발광되도록 하고 있다.In line with this trend, in recent years, a key top is formed by using UV-curing paint on the top of a thin base film made of synthetic resin such as PC, and an e-lamp sheet on which the e-lamp is printed is attached to the bottom of the base film. By forming a silicon layer having an actuator in the lower part of the lamp sheet, the keypad can be made slim, and light is uniformly emitted from the entire keypad.

그러나, 이러한 일반적인 슬림형 키패드는 어떠한 문양도 가지지 못하는 것이므로 키필름이 외부로 밋밋하게 보여져 고급스럽지 못한 단점이 있었다.However, these general slim keypads do not have any pattern, so the key film is shown to be flat to the outside, and has a disadvantage of not being luxurious.

본 발명은 이러한 점을 감안하여 제안된 것으로, 투명한 합성수지로 된 키필름의 상면에는 스핀(회오리)과 같은 문양을 성형하고, 키필름의 하부에는 홀로그램을 일체로 부착하여 키필름의 외부로 화려하게 비쳐지도록 함으로써 보다 고급스러운 키패드를 연출할 수 있는 홀로그램이 형성된 투명필름 키패드 제조방법 및 그 키패드를 제공하고자 하는 것이다.The present invention has been proposed in view of this point, and the upper surface of the key film made of a transparent synthetic resin, such as spin (tornaise) to form a pattern, the lower part of the key film to attach the hologram integrally to the outside of the key film gorgeously The purpose of the present invention is to provide a method for manufacturing a transparent film keypad and a keypad in which a hologram is formed to produce a more luxurious keypad.

이하, 본 발명을 제시되는 실시예와 첨부된 도면에 따라 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 홀로그램이 형성된 투명필름 키패드의 제조공정도이고, 도 2는 본 발명에 따른 홀로그램이 형성된 투명필름 키패드의 단면도이다.1 is a manufacturing process diagram of a transparent film keypad having a hologram according to the present invention, Figure 2 is a cross-sectional view of the transparent film keypad formed with a hologram according to the present invention.

도시된 바와 같이, 본 발명에 따른 홀로그램이 형성된 투명필름 키패드는 투명한 PC수지로 된 키필름(10)에 홀로그램을 일체로 형성하여 키필름(10)의 외부로 화려하게 비쳐지도록 함으로써 고급스러운 키필름(10)을 연출하기 위한 것으로, 이를 제조하는 과정을 살펴보면 다음과 같다.As shown, the hologram formed transparent film keypad according to the present invention by forming a hologram integrally on the key film 10 made of a transparent PC resin to be reflected to the outside of the key film 10 luxurious key film To produce (10), look at the manufacturing process as follows.

먼저, 스핀(spin)과 같은 문양(1)을 설계한 후 이와 동일한 문양(1)을 갖는 금형(21)을 제작하며, 이러한 금형(21)의 상면에 PC수지를 80℃의 조건하에서 3㎏/㎠의 압력으로 압착하여 스핀 문양(1)을 갖는 수지스템프(미도시)를 형성하게 되고, 투명한 PC수지로 된 키필름(10)을 마련하여 그 일측면에 UV경화도료(11)를 3∼4㎛의 두께로 피복하고 수지스템프를 3㎏/㎠의 압력으로 압착하여 문양(1)을 성형하게 되며, 이후 키필름(10)을 UV경화실(30)에 투입하여 UV 램프(31)에 의해 경화시켜 문양(1)을 견고하게 고정하게 되고, 이 상태에서 상온에 24시간 방치하여 숙성시키게 된다.First, after designing a pattern 1 such as spin, a mold 21 having the same pattern 1 is manufactured, and the PC resin is 3 kg on the upper surface of the mold 21 under the condition of 80 ° C. Pressed at a pressure of / cm 2 to form a resin stamp (not shown) having a spin pattern (1), to prepare a key film (10) made of a transparent PC resin and UV curing paint 11 on one side of the The sheet is coated with a thickness of ˜4 μm and the resin stamp is pressed at a pressure of 3 kg / cm 2 to form the pattern 1. Then, the key film 10 is put into the UV curing chamber 30 to UV lamp 31. It hardens | cures by and harden | cures the pattern 1, and it is left to stand at room temperature for 24 hours in this state, and is aged.

이때, PC수지는 80℃정도의 온도에서 그 물성이 변하여 유동성을 가질 수 있으므로 키필름(10)에 스핀 문양(1)을 성형할 때 상기와 같은 온도조건을 갖춘 것이며, 물론 이러한 온도조건은 80℃에서 약간의 오차범위가 있을 수 있지만 이보다 과하게 높은 온도일 경우 키필름(10)이 용융될 수 있어 80℃를 기준으로 함이 바람 직하다.In this case, since the PC resin may have fluidity by changing its physical properties at a temperature of about 80 ° C., the PC resin has the above temperature conditions when forming the spin pattern 1 on the key film 10. There may be a slight error range at ℃, but if the temperature is excessively higher than the key film 10 can be melted is preferably based on 80 ℃.

또한, 수지스템프 또는 키필름(10)의 표면에 스핀 문양(1)을 성형할 때의 압력이 3㎏/㎠ 보다 낮을 경우 성형이 잘 이루어지지 않으며, 이보다 압력이 높은 경우에는 베이스를 이루는 수지가 변형될 수 있는 문제가 있게 된다.In addition, when the pressure when forming the spin pattern 1 on the surface of the resin stamp or the key film 10 is lower than 3 kg / ㎠ the molding is not made well, if the pressure is higher than this the resin forming the base There is a problem that can be deformed.

아울러, UV경화도료(11)는 문양(1)을 성형하기에 3∼4㎛ 두께가 가장 바람직하며, 이보다 두께가 얇을 경우 성형에 어려움이 있고, 이보다 두꺼울 경우 키필름(10)의 두께가 전체적으로 증가되는 단점이 있게 된다.In addition, the UV curing paint 11 is most preferably 3 ~ 4㎛ thickness for molding the pattern (1), if the thickness is thinner than this, there is difficulty in molding, if thicker than this thickness of the key film 10 as a whole There is an increasing disadvantage.

키필름(10)의 상면에 상기와 같이 스핀 문양(1)을 성형한 후에는 키필름(10)의 하면에 홀로그램(2)을 형성하게 된다After the spin pattern 1 is formed on the top surface of the key film 10 as described above, the hologram 2 is formed on the bottom surface of the key film 10.

이를 위해 소정의 문양을 갖는 홀로그램(2)을 디자인하고, 레이저를 발진시켜 상기 디자인한 홀로그램(2)에 해당하는 요철을 포토레지스터에 형성하게 되며, 포토레지스터의 표면을 은경-도금하여 니켈스템프(미도시)를 형성하게 된다.To this end, a hologram 2 having a predetermined pattern is designed, and a laser is oscillated to form an unevenness corresponding to the designed hologram 2 in the photoresist, and a silver stamp of the surface of the photoresist by silver-plating. Not shown).

또한, 키필름(10)의 문양형성면 반대면에도 UV경화도료(11')를 3∼4㎛의 두께로 피복하고, 상기한 니켈스템프를 3㎏/㎠의 압력으로 압착하여 홀로그램(2)을 성형하며, 키필름(10)을 UV경화실(30')에 투입하여 UV 램프(31')에 의해 경화시켜 견고하게 고정하고, 키필름(10)의 홀로그램 형성면에 투명한 합성수지를 증착하여 투명증착층(40)을 형성하며, 투명증착층(40)의 표면에 키문자를 실크스크린 인쇄하면 된다. 도면상의 미설명 부호 50은 실크스크린 인쇄된 인쇄층을 나타낸다.In addition, the UV curable paint 11 'is coated on the opposite surface of the pattern forming surface of the key film 10 to a thickness of 3 to 4 µm, and the nickel stamp is pressed at a pressure of 3 kg / cm 2 to hologram 2. The key film 10 is put into the UV curing chamber 30 'and cured by the UV lamp 31' to be firmly fixed, and the transparent synthetic resin is deposited on the hologram forming surface of the key film 10. The transparent deposition layer 40 is formed, and the key letter may be silk-screen printed on the surface of the transparent deposition layer 40. Reference numeral 50 in the drawings represents a silkscreen printed printed layer.

이때에도 홀로그램(2) 성형시 압력은 3㎏/㎠이 가장 바람직하며, UV경화도료(11')의 두께 역시 3∼4㎛가 가장 바람직하며, 본 발명에 적용되는 UV경화도 료(11)(11')는 UV가 조사되면 경화될 수 있는 수지이면 어떠한 것이든 적용가능하다.In this case, the pressure of forming the hologram 2 is most preferably 3 kg / cm 2, and the thickness of the UV curing paint 11 ′ is also most preferably 3 to 4 μm, and the UV curing paint 11 applied to the present invention. 11 'may be applied to any resin that can be cured when UV is irradiated.

따라서, 상기와 같은 과정을 통해 제조된 투명필름 키패드는 투명한 키필름(10)의 상면에 UV경화도료(11)를 통해 문양(1)이 성형되고, 키필름(10)의 하면에는 UV경화도료(11')를 통해 홀로그램(2)이 형성되며, 홀로그램(2)의 하면에는 투명증착층(40)이 형성되고, 투명증착층(40)의 하면에는 키문자가 인쇄되어 이루어지는바, 키필름(10)이 투명하게 이루어지므로 주간에는 햇빛에 의해 키문자 및 키필름(10) 안쪽의 홀로그램(2)이 외부로 비쳐지면서 키필름(10) 상부의 스핀 문양(1)과 조화를 이루어 화려한 보여지게 되므로 슬림한 두께를 제공하면서도 보다 고품격의 키패드를 제공할 수 있는 것이다.Therefore, the transparent film keypad manufactured through the above process is formed on the upper surface of the transparent key film 10 through the UV curing paint 11, the pattern (1) is molded, the lower surface of the key film 10, UV curing paint Hologram 2 is formed through 11 ', and a transparent deposition layer 40 is formed on the lower surface of the hologram 2, and a key letter is printed on the lower surface of the transparent deposition layer 40. Since 10 is made transparent, the key character and the hologram 2 inside the key film 10 are illuminated to the outside during the day, and the splendid appearance is harmonious with the spin pattern 1 on the top of the key film 10. As a result, it is possible to provide a higher quality keypad while providing a slim thickness.

이상에서 설명한 바와 같이, 본 발명은 키패드가 필름형태로 이루어지므로 단말기의 두께가 전체적으로 슬림화될 수 있고, 키필름의 상면에는 스핀과 같은 문양이 성형되고 또 키필름의 하면에는 홀로그램이 성형되므로 이러한 각 문양이 외부로 화려하게 비쳐지게 되어 보다 고품격의 키패드를 제공할 수 있는 것이다.As described above, in the present invention, since the keypad is made in the form of a film, the thickness of the terminal can be made slim overall, and a pattern such as spin is formed on the upper surface of the key film, and a hologram is formed on the lower surface of the key film. The pattern is shining outwardly to provide a higher quality keypad.

또한, 홀로그램의 하면에는 투명하게 증착층이 형성되므로 홀로그램을 보호해주면서 그 하면에 위치되는 EL과 같은 광원의 불빛을 외부로 발산시킬 수 있는 것이다.In addition, since the deposition layer is formed on the lower surface of the hologram, it is possible to emit the light of a light source such as an EL located on the lower surface while protecting the hologram.

Claims (2)

소정의 문양을 갖는 금형을 제작하는 단계;Manufacturing a mold having a predetermined pattern; 상기 문양이 형성된 금형의 상면에 PC수지를 80℃의 조건하에서 3㎏/㎠의 압력으로 압착하여 상기 문양을 갖는 수지스템프를 형성하는 단계;Forming a resin stamp having the pattern on the upper surface of the mold on which the pattern is formed by pressing the PC resin at a pressure of 3 kg / cm 2 under a condition of 80 ° C .; 투명한 PC수지로 된 키필름의 일측면에 UV경화도료를 3∼4㎛의 두께로 피복하고 상기 수지스템프를 3㎏/㎠의 압력으로 압착하여 문양을 성형하는 단계;Coating a UV cured coating material with a thickness of 3 to 4 μm on one side of the key film made of transparent PC resin, and pressing the resin stamp at a pressure of 3 kg / cm 2 to form a pattern; 상기 키필름을 UV경화실에 투입하여 UV 램프에 의해 경화시키는 단계;Putting the key film into a UV curing chamber and curing the UV film with a UV lamp; 상기 키필름을 상온에 24시간 방치하여 숙성시키는 단계;Aging the key film at room temperature for 24 hours; 소정의 문양을 갖는 홀로그램을 디자인하고, 레이저를 발진시켜 상기 디자인한 문양에 해당하는 요철을 포토레지스터에 형성하는 단계;Designing a hologram having a predetermined pattern, and oscillating a laser to form an unevenness corresponding to the designed pattern in the photoresist; 상기 포토레지스터의 표면을 은경-도금하여 니켈스템프를 형성하는 단계;Silver-plating a surface of the photoresist to form a nickel stamp; 상기 키필름의 문양형성면 반대면에 UV경화도료를 3∼4㎛의 두께로 피복하고 상기 니켈스템프를 3㎏/㎠의 압력으로 압착하여 홀로그램 문양을 성형하는 단계;Forming a hologram pattern by coating a UV-curable coating with a thickness of 3 to 4 μm on the opposite surface of the pattern forming surface of the key film and pressing the nickel stamp at a pressure of 3 kg / cm 2; 상기 키필름을 UV경화실에 투입하여 UV 램프에 의해 경화시키는 단계;Putting the key film into a UV curing chamber and curing the UV film with a UV lamp; 상기 키필름의 홀로그램 형성면에 투명증착하는 단계; 및Transparent depositing on the hologram forming surface of the key film; And 상기 투명증착된 표면에 키문자를 실크스크린 인쇄하는 단계를 포함하여서 된 것을 특징으로 하는 홀로그램이 형성된 투명필름 키패드 제조방법.Hologram formed transparent film keypad manufacturing method comprising the step of silk-screen printing the key character on the transparent surface. 청구항 1에 따른 방법에 의해 투명한 키필름의 상면에는 UV경화도료로 된 문 양이 성형되고, 상기 키필름의 하면에는 UV경화도료로 된 홀로그램이 성형되며, 상기 홀로그램의 하면에는 투명증착층이 형성되고, 상기 투명증착층의 하면에는 키문자가 인쇄되어 이루어진 것을 특징으로 하는 홀로그램이 형성된 투명필름 키패드.By the method according to claim 1, the upper surface of the transparent key film is molded with a UV-curable coating, the lower surface of the key film is formed with a UV-curable paint hologram, the lower surface of the hologram is formed with a transparent deposition layer The transparent film keypad having a hologram, characterized in that a key letter is printed on the bottom surface of the transparent deposition layer.
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Cited By (3)

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KR101024414B1 (en) * 2009-09-23 2011-03-23 이종우 Method of transter hologram sheet to printed materials
CN102110538A (en) * 2009-12-23 2011-06-29 旭荣电子(深圳)有限公司 Button structure generating virtual stereo images by adopting laser hologram and manufacturing method thereof
CN114628183A (en) * 2022-04-26 2022-06-14 东莞市优想电子科技有限公司 Keycap manufacturing process and keyboard

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KR20030056830A (en) * 2001-12-28 2003-07-04 주식회사 유일전자 Keypad using metallized film and a method for manufacturing the same
KR100588773B1 (en) 2005-02-28 2006-06-20 주식회사 모젬 Wireless telephone keypad and the method
KR100695520B1 (en) * 2005-03-23 2007-03-15 (주)매트릭스 Metal feeling EL Keypad for Mobile Phone and the Method of Manufacturing the same
KR100704123B1 (en) 2005-09-02 2007-04-06 주식회사 이엠따블유안테나 Resin complex with metallic appearance, producing method thereof and keypad using the complex
KR200429248Y1 (en) 2006-07-14 2006-10-19 (주)모던테크 Navigation Key of Mobile Phone

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101024414B1 (en) * 2009-09-23 2011-03-23 이종우 Method of transter hologram sheet to printed materials
CN102110538A (en) * 2009-12-23 2011-06-29 旭荣电子(深圳)有限公司 Button structure generating virtual stereo images by adopting laser hologram and manufacturing method thereof
CN114628183A (en) * 2022-04-26 2022-06-14 东莞市优想电子科技有限公司 Keycap manufacturing process and keyboard
CN114628183B (en) * 2022-04-26 2024-02-27 广东省优想科技有限公司 Key cap manufacturing process and keyboard

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