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KR20070016338A - Cell phone keypad unit - Google Patents

Cell phone keypad unit Download PDF

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Publication number
KR20070016338A
KR20070016338A KR1020050070924A KR20050070924A KR20070016338A KR 20070016338 A KR20070016338 A KR 20070016338A KR 1020050070924 A KR1020050070924 A KR 1020050070924A KR 20050070924 A KR20050070924 A KR 20050070924A KR 20070016338 A KR20070016338 A KR 20070016338A
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KR
South Korea
Prior art keywords
keypad
pcb
mobile phone
light
layers
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Ceased
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KR1020050070924A
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Korean (ko)
Inventor
고영욱
안영주
Original Assignee
(주)케이디티
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Priority to KR1020050070924A priority Critical patent/KR20070016338A/en
Publication of KR20070016338A publication Critical patent/KR20070016338A/en
Ceased legal-status Critical Current

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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
    • H01H13/702—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
    • 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
    • H01H13/023—Light-emitting indicators
    • 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
    • H01H13/705—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 construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/036—Light emitting elements

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Push-Button Switches (AREA)

Abstract

본 발명은 휴대폰 키패드 유니트에 관한 것으로서, 다수의 LED 광원이 일정 간격으로 배치되고 상기 LED 광원에 나란하게 배치되는 다수의 돔이 구비되는 PCB와, 상기 PCB의 상측에 구비되는 키프레임과, 상기 키프레임과 PCB 사이에 구비되어 상측에는 키패드가 부착되고 하측에는 상기 키패드의 위치에 상응하여 다수의 돌기를 갖는 실리콘 패드로 이루어진 휴대폰 키패드 유니트에 있어서, 상기 키패드가 상측에 부착되는 실리콘 패드는 두 겹으로 적층되되, 두 겹의 실리콘 패드 사이에는 광여기 확산 시트가 삽입되어 일체로 적층되는 것을 특징으로 한다.        The present invention relates to a mobile phone keypad unit, a plurality of LED light sources are arranged at regular intervals and a PCB having a plurality of domes arranged side by side with the LED light source, a key frame provided on the upper side of the PCB, and the key In the mobile phone keypad unit is provided between the frame and the PCB, the keypad is attached to the upper side and has a plurality of protrusions in accordance with the position of the keypad on the lower side, the silicone pad to which the keypad is attached to the upper side in two layers Stacked, but is characterized in that the light excitation sheet is inserted between the two layers of silicon pads are integrally stacked.

본 발명에 의하면, 두 겹의 실리콘 패드 사이에 광여기 확산 시트를 삽입하기 때문에 상기 굴곡부의 굴곡이 어느 정도 완화되어 빛의 반사로 인한 굴곡부의 형광량 차이를 극복할 수 있어 LED 광원의 균일도를 높일 수 있다.. According to the present invention, since the excitation sheet is inserted between two layers of silicon pads, the bending of the curved portion is alleviated to some extent to overcome the difference in the amount of fluorescence due to the reflection of light, thereby increasing the uniformity of the LED light source. You can ..

광 여기 확산 시트(Photoluminescent diffusion sheet), 키패드, 실리콘 패드 Photoluminescent Diffusion Sheet, Keypad, Silicon Pad

Description

휴대폰 키패드 유니트{Keypad unit for cellularphone}Mobile Phone Keypad Unit {Keypad unit for cellularphone}

도 1은 종래의 휴대폰 키패드를 나타낸 단면도이다.       1 is a cross-sectional view showing a conventional mobile phone keypad.

도 2는 본 발명에 의한 휴대폰의 각 부분을 나타낸 부품도이다.       Figure 2 is a part diagram showing each part of the mobile phone according to the present invention.

도 3은 본 발명에 의한 휴대폰 키패드 유니트의 단면도이다.       3 is a cross-sectional view of a mobile phone keypad unit according to the present invention.

<도면중 주요부분에 대한 부호의 설명>          <Description of the symbols for the main parts of the drawings>

1: 휴대폰 본체 10: LED            1: mobile phone body 10: LED

11: 돔 12: PCB           11: dome 12: PCB

13: 돔 시트 14: 키프레임          13: dome sheet 14: keyframe

15: 돌기 16: 실리콘 패드          15: turning 16: silicone pad

17: 키패드 18: 굴곡부          17: keypad 18: bend

20: 광여기 확산 시트          20: photoexcited diffusion sheet

본 발명은 휴대폰 키패드 유니트에 관한 것으로서, 특히 키패드가 부착되는 실리콘 패드를 두겹으로 적층하되, 그 사이에 광여기 확산시트를 두고 적층하여 키패드 유니트를 일체형으로 형성함으로써 광원의 빛을 통과시킬 때 실리콘 패드의 하측면의 형성된 다수의 굴곡으로 인한 형광량의 차이를 줄이고 그 자체적으로 발광, 확산시켜 빛의 균일도를 높일 수 있도록 한 휴대폰 키패드 유니트에 관한 것이다.The present invention relates to a mobile phone keypad unit, in particular, the silicon pad to which the keypad is attached in two layers, but with a light excitation sheet in between the laminated by forming a keypad unit integrally to pass the light of the light source when passing through the light source of the keypad unit It relates to a mobile phone keypad unit to reduce the difference in the amount of fluorescence due to a plurality of bends formed on the lower side of the lower side and to increase the uniformity of light by emitting and diffusing itself.

일반적으로, 키패드는 휴대폰과 같은 통신기기 등에 사용되어지는 신호발생용 스위치 장치로서 이러한 스위치 장치는 숫자 또는 문자 등이 인쇄된 키패드를 휴대폰의 키프레임에 결합하고 그 키패드의 일부가 케이스의 외측으로 돌출된 구조를 갖는다. In general, a keypad is a switch device for signal generation used in a communication device such as a mobile phone. The switch device couples a keypad printed with numbers or letters to a key frame of a mobile phone, and a part of the keypad protrudes out of the case. Has a structure.

이러한 휴대폰 키패드에는 숫자나 문자 등이 키패드의 전면부에 인쇄되어져 있으며 사용자는 인쇄된 숫자나 문자를 확인하여 원하는 키패드를 누를 수 있도록 되어있다.In the mobile phone keypad, numbers or letters are printed on the front of the keypad, and the user can check the printed numbers or letters and press the desired keypad.

이렇게 숫자나 문자가 인쇄된 키패드를 야간에도 식별하여 사용할 수 있도록 키패드의 배면에 광원이 설치되어 이 광원으로부터 빛이 조사되면 백라이팅 효과에 의하여 야간이나 어두운 곳에서도 키패드에 인쇄된 숫자나 문자를 인식할 수 있도록 구성되어 있다.The light source is installed on the back of the keypad so that the keypad printed with numbers or letters can be used even at night. When light is irradiated from the light source, the keypad can recognize the numbers or letters printed on the keypad even at night or in dark places. It is configured to be.

기존의 일반적인 휴대폰에서 사용되어지는 키패드 유니트에는 그 광원으로 LED를 주로 사용한다.LED keypad is mainly used as a light source for the keypad unit used in existing general mobile phones.

도 1 및 도 2에 도시된 바와같이, LED를 후광원으로 사용하는 휴대폰 키패드의 경우, PCB(12)의 전면부에 LED(10)를 결합하고, 상기 PCB(12)에 배치되는 돔(11)에 돔 시트(13)를 끼워 부착한다.1 and 2, in the case of a mobile phone keypad using LED as a back light source, the LED 10 is coupled to the front surface of the PCB 12 and the dome 11 disposed on the PCB 12. ) And attach the dome sheet (13).

키프레임(14)에 결합된 키패드(17)의 하부에는 실리콘 패드(16)가 부착되고 상기 실리콘 패드(16)의 하측에 형성된 돌기(15)로 누르면 PCB(12)의 돔(11)과 접촉되어 전기신호가 발생되고, 이 전기신호로 인하여 PCB(12)에 결합되어있는 LED(10)가 발광하게 된다.A silicon pad 16 is attached to the lower portion of the keypad 17 coupled to the key frame 14, and pressed with a protrusion 15 formed below the silicon pad 16 to contact the dome 11 of the PCB 12. An electrical signal is generated, and the LED 10 coupled to the PCB 12 emits light due to the electrical signal.

이렇게 상기 LED(10)로부터 발광된 빛은 키패드(17)쪽을 통하여 휴대폰 외부로 조사되며 사용자는 이 빛을 통하여 야간이나 어두운 곳에서도 휴대폰의 키패드(17)에 위치한 숫자나 문자를 인식할 수 있다.The light emitted from the LED 10 is irradiated to the outside of the mobile phone through the keypad 17 side, and the user can recognize the number or letter located on the keypad 17 of the mobile phone at night or in the dark through this light. .

위와같이 종래의 경우, LED(10) 광원의 빛은 키패드(17)가 있는 방향으로 대부분 조사되는데 키패드(17)가 있는 부분의 실리콘 패드(16)의 하측면에 다수의 굴곡부(18)가 형성되어 있어 형광량의 차이가 생기고 이에 따라 외부로 조사되는 빛의 균일성이 떨어지는 문제점이 있었다.In the conventional case as described above, the light of the LED 10 light source is mostly irradiated in the direction in which the keypad 17 is located, and a plurality of bends 18 are formed on the lower side of the silicon pad 16 at the portion where the keypad 17 is located. Since there is a difference in the amount of fluorescence there is a problem in that the uniformity of light irradiated to the outside is inferior.

본 발명은 상기의 문제점을 해결하기 위하여 안출된 것으로서, 키패드가 부착되는 실리콘 패드를 두겹으로 적층하되, 그 사이에 광여기 확산시트를 두고 적층하여 키패드 유니트를 일체형으로 형성함으로써 광원의 빛을 통과시킬 때 실리콘 패드의 하측면에 형성된 다수의 굴곡부로 인한 형광량의 차이를 줄이고, 그 자체적으로 빛을 발광, 확산시켜 빛의 균일도를 높일 수 있도록 한 휴대폰 키패드 유니트를 제공하는데 그 목적이 있다.The present invention has been made in order to solve the above problems, but two layers of the silicon pad to which the keypad is attached, laminated with a light excitation diffusion sheet therebetween to form a keypad unit integrally to pass the light of the light source. The purpose of the present invention is to provide a mobile phone keypad unit which reduces the difference in the amount of fluorescence caused by a plurality of bent portions formed on the lower side of the silicon pad and increases the uniformity of light by emitting and diffusing light by itself.

상기의 목적을 달성하기 위하여 본 발명에 따른 휴대폰 키패드 유니트는 다수의 LED 광원이 일정 간격으로 배치되고 상기 LED 광원에 나란하게 배치되는 다수 의 돔이 구비되는 PCB와, 상기 PCB의 상측에 구비되는 키프레임과, 상기 키프레임과 PCB 사이에 구비되어 상측에는 키패드가 부착되고 하측에는 상기 키패드의 위치에 상응하여 다수의 돌기를 갖는 실리콘 패드로 이루어진 휴대폰 키패드 유니트에 있어서, 상기 키패드가 상측에 부착되는 실리콘 패드는 두 겹으로 적층되되, 두 겹의 실리콘 패드 사이에는 광여기 확산 시트가 삽입되어 일체로 적층되는 것을 특징으로 한다.In order to achieve the above object, a mobile phone keypad unit according to the present invention includes a PCB having a plurality of LED light sources arranged at a predetermined interval and arranged side by side with the LED light source, and a key provided on an upper side of the PCB. A mobile phone keypad unit comprising a frame and a silicon pad provided between the key frame and the PCB, the keypad being attached to the upper side and having a plurality of protrusions corresponding to the position of the keypad on the lower side, wherein the keypad is attached to the upper side. The pad is stacked in two layers, and the light excitation diffusion sheet is inserted between the two layers of silicon pads to be integrally stacked.

이하, 첨부된 도면을 참고로 하여 본 발명에 따른 휴대폰 키패드 유니트에 대해 상세히 설명한다.Hereinafter, a mobile phone keypad unit according to the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 의한 휴대폰 키패드 유니트의 단면도이다.3 is a cross-sectional view of a mobile phone keypad unit according to the present invention.

본 발명에 따른 휴대폰 키패드 유니트는 크게 구별하여 아래로부터 PCB(12)와, 광여기 확산 시트(20)가 삽입된 실리콘 패드(16)와, 키프레임(14) 및 키패드(17)로 구성된다.The mobile phone keypad unit according to the present invention is largely composed of a PCB 12, a silicon pad 16 into which a light-excited diffusion sheet 20 is inserted, a key frame 14 and a keypad 17 from below.

먼저, 상기 PCB(12)에는 다수의 LED(10) 광원이 일정 간격으로 배치되고, 상기 LED(10) 광원에 나란하게 배치되는 다수의 돔(11)이 구비되는데 이때 상기 LED (10) 광원으로는 청색 LED나 백색 LED를 주로 사용하고 있다.First, the PCB 12 has a plurality of LED (10) light sources are arranged at regular intervals, a plurality of domes (11) arranged side by side on the LED (10) light source is provided with the LED (10) as a light source Mainly use blue LED or white LED.

현재 휴대폰 키패드의 광원으로는 백색이 많이 쓰이는데, 백색 LED의 가격은 청색 LED에 비해 2~4배 정도 비싸고, 보통 키패드 유니트의 경우에 6개에서 20개의 LED가 사용되기 때문에 백색 LED를 사용하게 되면 고가의 키패드 유니트가 된다.Currently, white is used as a light source for a mobile phone keypad. The price of a white LED is 2 to 4 times more expensive than a blue LED, and when a keypad unit uses 6 to 20 LEDs, a white LED is used. It becomes an expensive keypad unit.

따라서, 광여기 확산 시트(20)를 사용함으로써 청색 LED로 색순도가 좋은 백색광을 낼 수 있다.Accordingly, by using the light-excited diffusion sheet 20, white light having good color purity can be produced by the blue LED.

즉, 상기 키프레임(14)의 하측면에 부착되는 실리콘 패드(16)를 두 겹으로 적층하되, 두 겹의 실리콘 패드(16) 사이에는 광여기 확산 시트(20)가 삽입된다.That is, the silicon pads 16 attached to the lower side of the key frame 14 are stacked in two layers, and the photoexcited diffusion sheet 20 is inserted between the two layers of silicon pads 16.

따라서, 키패드(17), 키프레임(14) 및 광여기 확산 시트(20)를 삽입하여 적층된 실리콘 패드(16)가 일체형을 이루게 되며, 상기 광여기 확산 시트(20)에는 확산제가 있어서 빛을 확산시키며 게다가 자체 발광도 하므로 확산효과가 더욱 높아져 상기 키패드로 조사되는 빛의 균일도를 높일 수 있다.Therefore, the keypad 17, the key frame 14, and the light excitation diffusion sheet 20 are inserted to form a stacked silicon pad 16, and the light excitation diffusion sheet 20 has a diffuser to provide light. Since the light is diffused and self-luminous, the diffusion effect is further enhanced, thereby increasing the uniformity of light radiated by the keypad.

또한, 기존에는 도 1과 같이 상기 PCB(12)의 상단에 구비되는 실리콘 패드(16)의 하측면에는 다수의 굴곡부(18)가 상기 PCB(12)의 돔(11) 위치에 대응하여 형성되는데, 이러한 굴곡부(18)는 상기 키프레임(14)의 하측면에 부착되는 실리콘 패드(16)를 두 겹으로 적층하되, 두 겹의 실리콘 패드(16) 사이에 광여기 확산 시트(20)를 삽입시킴으로써 그 굴곡의 정도를 완화시킬 수 있다.In addition, conventionally, a plurality of bent portions 18 are formed on the lower side of the silicon pad 16 provided on the top of the PCB 12 to correspond to the position of the dome 11 of the PCB 12 as shown in FIG. 1. The bend 18 stacks two layers of silicon pads 16 attached to the lower side of the keyframe 14, and inserts the photoexcited diffusion sheet 20 between the two layers of silicon pads 16. By doing so, the degree of bending can be alleviated.

상기 실리콘 패드(16)의 하측면에 형성되어 있는 다수의 굴곡부(18)로 인해 LED 광원이 조사될 때 형광량의 차이가 생겨 키패드(17)로 조사되는 빛의 균일성이 떨어지는데 상기와 같이 상기 굴곡부(18)의 굴곡이 완화되어 빛의 반사로 인한 형광량의 차이를 극복할 수 있다. Due to the plurality of bent portions 18 formed on the lower side of the silicon pad 16, a difference in the amount of fluorescence occurs when the LED light source is irradiated, resulting in a decrease in the uniformity of the light irradiated onto the keypad 17. Curvature of the bend 18 may be relaxed to overcome the difference in the amount of fluorescence due to the reflection of light.

위와같이 본 발명에 의하면, 키패드(17)가 끼워지는 키프레임(14)의 하측면에 광여기 확산 시트(20)가 삽입되는 두겹의 실리콘 패드(16)를 부착함으로써 굴곡부(18) 때문에 발생하는 형광량의 차이를 줄여 키패드(17)로 조사되는 LED 광원의 균일도를 높일 수 있다. According to the present invention as described above, due to the bent portion 18 by attaching the two-layered silicon pad 16 is inserted into the optical excitation sheet 20 is inserted into the lower side of the key frame 14, the keypad 17 is fitted The uniformity of the LED light source irradiated with the keypad 17 can be increased by reducing the difference in the amount of fluorescence.

또한, 기존의 백색 LED 대신 새로운 광 여기 확산 시트(20)를 이용함으로써 생산 원가를 절감할 수 있고, 생산 공정도 간단하게 될 수 있다.In addition, by using the new light excitation diffusion sheet 20 in place of the existing white LED, the production cost can be reduced, and the production process can be simplified.

또한, 광 여기 확산 시트(20)의 광 여기 물질을 잘 선정하면 소비자가 원하는 파장과 색을 만들어 낼 수 있고, 휘도 또한 증가 시킬 수 있다.In addition, if the light excitation material of the light excitation diffusion sheet 20 is well selected, the wavelength and color desired by the consumer may be generated, and the luminance may also be increased.

Claims (2)

다수의 LED 광원이 일정 간격으로 배치되고 상기 LED 광원에 나란하게 배치되는 다수의 돔이 구비되는 PCB와, 상기 PCB의 상측에 구비되는 키프레임과, 상기 키프레임과 PCB 사이에 구비되어 상측에는 키패드가 부착되고 하측에는 상기 키패드의 위치에 상응하여 다수의 돌기를 갖는 실리콘 패드로 이루어진 휴대폰 키패드 유니트에 있어서,       A plurality of LED light sources are arranged at regular intervals and a PCB having a plurality of domes arranged side by side in the LED light source, a key frame provided on the upper side of the PCB, and provided between the key frame and the PCB, the keypad on the upper side In the mobile phone keypad unit is made of a silicone pad attached to the lower side having a plurality of projections corresponding to the position of the keypad, 상기 키패드가 상측에 부착되는 실리콘 패드는 두 겹으로 적층되되, 두 겹의 실리콘 패드 사이에는 광여기 확산 시트가 삽입되어 일체로 적층되는 것을 특징으로 하는 휴대폰 키패드 유니트.The silicon pad to which the keypad is attached to the upper side is stacked in two layers, the cell phone keypad unit, characterized in that the optical excitation sheet is inserted between the two layers of silicon pad is integrally stacked. 제1항에 있어서, 상기 LED 광원은 청색 LED로 구성되는 것을 특징으로 하는 휴대폰 키패드 유니트.      The mobile phone keypad unit of claim 1, wherein the LED light source is comprised of a blue LED.
KR1020050070924A 2005-08-03 2005-08-03 Cell phone keypad unit Ceased KR20070016338A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100816440B1 (en) * 2006-07-25 2008-03-27 (주)삼영테크놀로지 Key input device
KR100945863B1 (en) * 2007-09-27 2010-03-09 엔아이티 주식회사 Light Diffusion Keypad and Manufacturing Method Thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100816440B1 (en) * 2006-07-25 2008-03-27 (주)삼영테크놀로지 Key input device
KR100945863B1 (en) * 2007-09-27 2010-03-09 엔아이티 주식회사 Light Diffusion Keypad and Manufacturing Method Thereof

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