KR20090052438A - Colored light guide panel - Google Patents

Colored light guide panel Download PDF

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Publication number
KR20090052438A
KR20090052438A KR1020070118934A KR20070118934A KR20090052438A KR 20090052438 A KR20090052438 A KR 20090052438A KR 1020070118934 A KR1020070118934 A KR 1020070118934A KR 20070118934 A KR20070118934 A KR 20070118934A KR 20090052438 A KR20090052438 A KR 20090052438A
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KR
South Korea
Prior art keywords
light guide
guide plate
pattern
ink layer
mobile phone
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KR1020070118934A
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Korean (ko)
Inventor
김우춘
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주식회사 케이비에프
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Priority to KR1020070118934A priority Critical patent/KR20090052438A/en
Publication of KR20090052438A publication Critical patent/KR20090052438A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0051—Diffusing sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • 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
    • H01H13/83—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 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
    • 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
    • H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)

Abstract

본 발명은 휴대폰 키패드 용 도광판에 관한 것으로서, 보다 자세하게는 휴대폰 키패드 조립체에서 백라이트 역할을 하는 도광판의 반사패턴을 이용하여 키부의 색상을 다양하게 변화시키고 발광효과를 제고할 수 있는 색상 도광판에 관한 것이다.The present invention relates to a light guide plate for a mobile phone keypad, and more particularly, to a color light guide plate capable of variously changing the color of a key part and enhancing a light emitting effect by using a reflection pattern of a light guide plate serving as a backlight in a mobile phone keypad assembly.

도광판, 확산 Light guide plate, diffusion

Description

색상 도광판{Colored light guide panel}Colored light guide panel

본 발명은 휴대폰 키패드 용 도광판에 관한 것으로서, 보다 자세하게는 휴대폰 키패드 조립체에서 백라이트 역할을 하는 도광판의 반사패턴을 이용하여 키부의 색상을 다양하게 변화시키고 발광효과를 제고할 수 있는 색상 도광판에 관한 것이다.The present invention relates to a light guide plate for a mobile phone keypad, and more particularly, to a color light guide plate capable of variously changing the color of a key part and enhancing a light emitting effect by using a reflection pattern of a light guide plate serving as a backlight in a mobile phone keypad assembly.

휴대폰이 슬림화되면서, 휴대폰 키패드의 부피를 줄이기 위한 기술도 꾸준히 개발되고 있고 있는바, 본 출원인은 선출원(제 호)에 의해, 일 측면에만 실장 되는 측면 발광 LED를 이용한 휴대폰 키패드 백라이트용 도광판의 결합구조를 제시한 바 있다.As mobile phones become slimmer, technologies for reducing the volume of mobile phone keypads have been steadily being developed. The present applicant has proposed a combination of a light guide plate for a mobile phone keypad backlight using a side emitting LED mounted only on one side by a prior application (heading number). Has been presented.

상기 선출원에서 제시하는 휴대폰 키패드용 도광판은 박막 평판형인바, 도 1에서 보는 바와 같이, 전면이 동일한 두께로 얇게 형성된 도광판(1-1)의 일 면에 반사패턴(1-2)이 키부의 위치에 따라 적절한 크기로 형성되어 있다.The light guide plate for the mobile phone keypad presented in the above-described application is a thin film flat bar, as shown in FIG. 1, the reflection pattern 1-2 is located on one surface of the light guide plate 1-1 having the same thickness as the front surface. According to the appropriate size is formed.

이러한 도광판을 이용한 키패드는 발광의 휘도 및 균일성 면에서 종래 LED형이나 EL형에 비해 개선된 성능을 보일 뿐만 아니라, 제조공정이 간소하고, 원가가 절감되며, 제품의 안정성이나 신뢰성이 제고되는 긍정적인 효과가 있다.The keypad using the light guide plate has improved performance compared to the conventional LED type or EL type in terms of brightness and uniformity of light emission, and has a simple manufacturing process, reduces costs, and improves product stability and reliability. Has an effect.

그러나 도광판 키패드 기술은 이제 초기 단계에 불과하여 다양한 소비자의 기호를 충족하기에는 미흡한 수준인바, 무엇보다도 종래의 도광판 키패드는 다양한 색상을 구현을 위한 수단을 제공하지 못하고, 도 2에서 보는 바와 같이, 반사패턴에 의해 스팟(Spot) 형상(2-2)이 외부에서도 그대로 감지되는 문제가 있다.However, the light guide plate keypad technology is only at an early stage and is insufficient to meet various consumer's preferences. Above all, the conventional light guide plate keypad does not provide a means for implementing various colors, and as shown in FIG. There is a problem that the spot shape (2-2) is detected as it is from the outside.

본 발명은 종래 휴대폰 키패드용 도광판을 개선하기 위하여 창출된 것으로서, 색상 구현 및 스팟 현상 방지가 가능한 도광판의 제공을 목적으로 한다.The present invention has been made to improve a light guide plate for a conventional mobile phone keypad, and an object of the present invention is to provide a light guide plate capable of realizing color and preventing spot phenomenon.

키부로의 난반사가 가능하도록 일 면에 반사패턴을 구비하여, 광원으로부터 입사하는 빛을 도파 하는 휴대폰 키패드용 박막 평판형의 도광판에 있어서, 상기 반사패턴에 확산잉크층을 인쇄함으로써 상기 반사패턴의 요철을 평탄화하여 커버 하는 것을 특징으로 하는 도광판을 제공한다.In a thin film flat panel light guide plate for a mobile phone keypad provided with a reflective pattern on one surface to enable diffuse reflection to a key portion, the diffuse pattern of the reflective pattern is printed by printing a diffusion ink layer on the reflective pattern. It provides a light guide plate characterized in that the flattening.

본 발명의 다른 특징에 의하면, 키부로의 난반사가 가능하도록 일 면에 반사패턴을 구비하여, 광원으로부터 입사하는 빛을 도파하는 휴대폰 키패드용 박막 평판형의 도광판에 있어서, 상기 반사패턴이 형성된 면과 반대면 상에 상기 반사패턴에 대응되도록 확산잉크층을 형성하는 것을 특징으로 하는 도광판을 제공한다.According to another feature of the present invention, a thin film flat panel light guide plate for a mobile phone keypad having a reflection pattern on one surface to enable diffuse reflection to a key portion to guide light incident from a light source, the surface having the reflection pattern formed thereon; Provided is a light guide plate, characterized in that to form a diffusion ink layer corresponding to the reflective pattern on the opposite surface.

본 발명의 다른 특징에 의하면, 광원으로부터 입사하는 빛을 도파하는 휴대폰 키패드용 박막 평판형의 도광판에 있어서, 키부로의 난반사가 가능하도록 일 면에 색상이 있는 확산잉크를 반사패턴에 따라 도트 인쇄한 확산잉크층을 구비하는 것을 특징으로 하는 도광판을 제공한다.According to another aspect of the present invention, in the thin-film flat-type light guide plate for mobile phone keypad which guides the light incident from the light source, dot-printed colored ink on one surface is dot printed according to the reflection pattern to enable diffuse reflection to the key portion. Provided is a light guide plate comprising a diffusion ink layer.

본 발명의 다른 특징에 의하면, 상기 확산잉크층은 반사패턴의 형상과 동일한 패턴 또는 키부의 문자 패턴에 따라 형성되는 것을 특징으로 한다.According to another feature of the present invention, the diffusion ink layer is formed according to the same pattern as the shape of the reflective pattern or the letter pattern of the key portion.

본 발명의 다른 특징에 의하면, 상기 확산잉크층은 키부별 다른 색상으로 형성하는 것을 특징으로 한다.According to another feature of the invention, the diffusion ink layer is characterized in that it is formed in a different color for each key portion.

본 발명에 따르면, 다양한 발광 컬러를 구현할 수 있고, 반사패턴이 그대로 드러나는 스팟 현상 없이 키부 전체가 일체 발광하므로, 종래 도광판의 한계를 극복할 수 있는바, 도광판이 휴대폰 키패드에 광범위하게 사용될 수 있는 획기적인 전기를 마련하였다고 하겠다.According to the present invention, it is possible to implement a variety of light emitting colors, and because the entire key portion emits light without a spot phenomenon that the reflection pattern is exposed, it is possible to overcome the limitations of the conventional light guide plate, the light guide plate can be widely used in a mobile phone keypad I will provide electricity.

도 3은 본 발명에 따른 도광판의 반사패턴을 측면에서 관찰한 측단면도로서, 도광판(3-1) 하부에 프레스 가공이나 사출성형의 방법으로 V자 홈 등이 형성된 반사패턴(3-2)이 구비되어 빛을 상향으로 난반사하고, 상기 반사패턴(3-2)은 확산잉크층(3-3)을 인쇄하여 요철을 메우고 반사패턴을 평탄화하여 커버한다.FIG. 3 is a side cross-sectional view of a reflective pattern of the light guide plate according to the present invention from the side surface. Diffuse reflection of the light upward, the reflective pattern (3-2) is printed by the diffusion ink layer (3-3) to fill the unevenness and flatten the reflective pattern to cover.

상기 반사패턴(3-2)은 연속된 다수의 홈으로서, 키부에 대응하는 위치에 형성되어 입사하는 빛을 난반사하여 키부를 집중조사 하게 된다. The reflection pattern 3-2 is a plurality of continuous grooves, and is formed at a position corresponding to the key portion to diffusely reflect the incident light to concentrate the key portion.

그러나 이러한 반사패턴(3-2)은 발광시에는 도 2에서 보는 바와 같이, 스팟 형상으로 관찰되는데, 이 스팟 형상의 출현을 방지하기 위해서, 반사패턴에 확산잉크층(3-3)을 인쇄함으로써 스팟에 집중된 빛이 도 4에서와 같이, 반사패턴(4-2)의 범위 내에서 자연스럽게 확산 되도록 한다.However, the reflective pattern 3-2 is observed in the form of a spot, as shown in Fig. 2 during light emission. In order to prevent the appearance of the spot, by printing the diffusion ink layer 3-3 on the reflective pattern, The light concentrated at the spot is naturally diffused within the range of the reflection pattern 4-2, as shown in FIG.

상기 확산잉크층은 반사패턴에 인쇄되도록 하되, 요부(凹部)에 확산잉크를 주입하여 반사패턴을 커버 하여 반사패턴 표면이 평탄화되도록 하는 것이 발광의 균일성 측면에서 가장 바람직하다.The diffusion ink layer may be printed on the reflection pattern, but the diffusion ink is injected into the recess to cover the reflection pattern so that the surface of the reflection pattern is flattened.

또한 상기 확산잉크는 다양한 색상의 선택이 가능한 것이기 때문에, 흰색뿐만 아니라, 선호되는 색상의 확산잉크를 반사패턴에 인쇄함으로써 다양한 색상의 발광이 가능한 도광판을 제공할 수 있다.In addition, since the diffusion ink can be selected from a variety of colors, it is possible to provide a light guide plate capable of emitting a variety of colors by printing a diffusion ink of a preferred color as well as white on the reflection pattern.

도 5는 본 발명의 다른 실시예로서, 확산잉크층(5-3)을 도광판(5-1) 상의 반사패턴(5-2)과 반대 방향에 형성하는 것이다.FIG. 5 shows another embodiment of the present invention in which the diffusion ink layer 5-3 is formed in a direction opposite to the reflection pattern 5-2 on the light guide plate 5-1.

반사패턴이 형성되어 있지 않은 면에 확산잉크층(5-3)을 형성하기 때문에, 제조가 용이하고, 반사패턴(5-2)에서 상향하는 빛이 확산되어 스팟 형상이 관찰되지 않고, 상기 확산잉크층에 사용할 잉크의 색상을 변화함으로써 다양한 발광 컬러를 구현할 수 있는 효과는 앞선 실시예와 동일하다.Since the diffusion ink layer 5-3 is formed on the surface where the reflection pattern is not formed, it is easy to manufacture, and light upwardly spreading from the reflection pattern 5-2 is diffused so that no spot shape is observed. The effect of realizing various emission colors by changing the color of the ink to be used in the ink layer is the same as in the previous embodiment.

도 6은 본 발명의 다른 실시예로서, 도광판(6-1)의 반사패턴이 인쇄방식으로 돌출되어 형성되는 경우인바, 반사패턴에 따라 확산잉크를 도광판(6-1) 상에 인쇄함으로써, 다수의 도트 형상으로 돌출된 반사패턴으로서의 확산잉크층(6-3)을 형성한다.6 is another embodiment of the present invention, in which the reflective pattern of the light guide plate 6-1 is formed by protruding by a printing method, by printing the diffusion ink on the light guide plate 6-1 according to the reflective pattern. The diffusion ink layer 6-3 as a reflection pattern projecting in the dot shape of is formed.

상기 확산잉크층(6-3)은 수평으로 입사되는 빛을 난반사하는 반사패턴으로서의 기능뿐만 아니라, 발광 시 해당 잉크 색상에 따른 발광 컬러도 구현할 수 있다.The diffusion ink layer 6-3 may implement not only a function as a reflection pattern that diffusely reflects light incident horizontally, but also a light emitting color according to a corresponding ink color.

이상의 실시예에서 언급한 확산잉크층은 적용할 잉크의 색상만 결정하면 발 광 컬러를 손쉽게 변화시킬 수 있으며, 반사패턴 별 색상을 달리함으로써 키부 별로 다른 컬러의 구현도 가능하다.The diffusion ink layer mentioned in the above embodiments can easily change the light emission color by determining only the color of the ink to be applied, and it is also possible to implement different colors for each key part by changing the color for each reflection pattern.

잉크의 색상은 백색과 같이 반사율이 우수한 색은 물론이고, 명도가 높아 광반사에 지장을 주지 않는 색이면, 다양하게 선택 가능하다.The color of the ink can be variously selected as long as the color is excellent in reflectance such as white and of high brightness and does not interfere with light reflection.

도 7은 확산잉크층의 인쇄 패턴으로서, (가)와 같이, 반사패턴 발광 면 전체에 잉크를 인쇄하거나, (나)와 같이, 키부의 문자(숫자, 기호 포함) 형태대로 필요한 부분에만 인쇄할 수 있는 등, 다양한 패턴의 적용이 가능하다.FIG. 7 is a printing pattern of the diffusion ink layer, and as shown in (a), ink may be printed on the entire reflective pattern emitting surface, or (b) may be printed only on a necessary portion in the form of letters (numbers and symbols) of the key portion. It is possible to apply a variety of patterns, such as.

도 1은 종래 휴대폰 키패드용 도광판의 예시도.1 is an exemplary view of a light guide plate for a conventional mobile phone keypad.

도 2는 종래 도광판이 스팟 형상으로 발광되는 경우의 예시도.2 is an exemplary view when a conventional light guide plate emits light in a spot shape.

도 3은 본 발명에 따라 확산잉크층이 반사패턴에 인쇄된 경우의 예시도.Figure 3 is an exemplary view when the diffusion ink layer is printed on the reflection pattern in accordance with the present invention.

도 4는 본 발명에 따른 도광판 발광예시도.Figure 4 is an exemplary light emitting plate light emitting according to the present invention.

도 5는 본 발명에 따라 확산잉크층이 반사패턴 이면에 인쇄된 경우의 예시도.5 is an exemplary view when the diffusion ink layer is printed on the back surface of the reflective pattern according to the present invention.

도 6은 본 발명에 따라 확산잉크로 반사패턴을 형성한 경우의 예시도.6 is an exemplary view when a reflective pattern is formed with a diffusion ink according to the present invention.

도 7은 본 발명에 따른 확산잉크층의 인쇄패턴 예시도.7 is a view illustrating a printing pattern of a diffusion ink layer according to the present invention.

<주요 도면부호에 대한 설명><Description of the major reference numerals>

3-1, 5-1, 6-1 : 도광판 3-2, 5-2 : 반사패턴 3-3, 5-3, 6-3 : 확산잉크층3-1, 5-1, 6-1: Light guide plate 3-2, 5-2: Reflective pattern 3-3, 5-3, 6-3: Diffusion ink layer

Claims (5)

키부로의 난반사가 가능하도록 일 면에 반사패턴을 구비하여, 휴대폰 키패드의 광원으로부터 입사하는 빛을 도파 하는 박막 평판형의 도광판에 있어서, 상기 반사패턴에 확산잉크층을 인쇄함으로써 상기 반사패턴의 요철을 평탄화하고 상기 반사패턴을 커버 하는 것을 특징으로 하는 도광판.A thin film flat light guide plate having a reflective pattern on one surface to enable diffuse reflection to a key portion and guiding light incident from a light source of a mobile phone keypad, wherein the unevenness of the reflective pattern is printed by printing a diffusion ink layer on the reflective pattern. The light guide plate, characterized in that to planarize and cover the reflective pattern. 키부로의 난반사가 가능하도록 일 면에 반사패턴을 구비하여, 휴대폰 키패드의 광원으로부터 입사하는 빛을 도파하는 박막 평판형의 도광판에 있어서, 상기 반사패턴이 형성된 면과 반대면 상에 상기 반사패턴에 대응되도록 확산잉크층을 형성하는 것을 특징으로 하는 도광판.A thin film flat light guide plate having a reflection pattern on one surface to enable diffuse reflection to a key portion, and guiding light incident from a light source of a mobile phone keypad, wherein the reflection pattern is formed on a surface opposite to the surface on which the reflection pattern is formed. A light guide plate, characterized in that to form a diffusion ink layer to correspond. 휴대폰 키패드의 광원으로부터 입사하는 빛을 도파하는 박막 평판형의 도광판에 있어서, 키부로의 난반사가 가능하도록 일 면에 색상이 있는 확산잉크를 반사패턴에 따라 도트 인쇄한 확산잉크층을 구비하는 것을 특징으로 하는 도광판.A thin film flat light guide plate for guiding light incident from a light source of a mobile phone keypad, comprising: a diffusion ink layer in which a colored ink is dot-printed on one surface of the mobile phone keypad according to a reflection pattern to enable diffuse reflection to a key portion; Light guide plate made with. 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 확산잉크층은 반사패턴의 형상과 동일하거나, 키부의 문자 패턴에 따라 형성되는 것을 특징으로 하는 도광판.The light guide plate according to any one of claims 1 to 3, wherein the diffusion ink layer has the same shape as the reflection pattern or is formed according to the letter pattern of the key portion. 제 1항 내지 제 3항 중 어느 한 항에 있어서, 상기 확산잉크층은 키부별 다른 색상으로 형성하는 것을 특징으로 하는 도광판.The light guide plate according to any one of claims 1 to 3, wherein the diffusion ink layer is formed in a different color for each key portion.
KR1020070118934A 2007-11-21 2007-11-21 Colored light guide panel KR20090052438A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101034229B1 (en) * 2010-11-24 2011-05-12 박경춘 Light guide plate for keyped
KR101049375B1 (en) * 2009-06-15 2011-07-14 (주) 태양기전 Multiple Waveguide Films and Convertible Multiple Keypads Comprising the Same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101049375B1 (en) * 2009-06-15 2011-07-14 (주) 태양기전 Multiple Waveguide Films and Convertible Multiple Keypads Comprising the Same
KR101034229B1 (en) * 2010-11-24 2011-05-12 박경춘 Light guide plate for keyped

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