JP2002300258A - Operation key lighting structure of portable terminal device - Google Patents
Operation key lighting structure of portable terminal deviceInfo
- Publication number
- JP2002300258A JP2002300258A JP2001104060A JP2001104060A JP2002300258A JP 2002300258 A JP2002300258 A JP 2002300258A JP 2001104060 A JP2001104060 A JP 2001104060A JP 2001104060 A JP2001104060 A JP 2001104060A JP 2002300258 A JP2002300258 A JP 2002300258A
- Authority
- JP
- Japan
- Prior art keywords
- light
- terminal device
- portable terminal
- guide member
- light guide
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Push-Button Switches (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、携帯電話機等の携
帯端末装置において使用される操作キーの照明構造に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination structure of operation keys used in a portable terminal device such as a portable telephone.
【０００２】[0002]
【従来の技術】従来から、携帯電話機等の携帯端末装置
では使用者が操作する操作キーが設けられている。前記
携帯端末装置は暗闇で使用する場合があるため、暗闇で
も操作キーの位置、文字、数字等を確認できるように操
作キーの照明構造が設けられている。2. Description of the Related Art Conventionally, a portable terminal device such as a portable telephone is provided with an operation key operated by a user. Since the mobile terminal device may be used in the dark, an illumination structure for the operation keys is provided so that the position, characters, numbers, and the like of the operation keys can be confirmed even in the dark.
【０００３】前記携帯端末装置では複数の操作キーが設
けられており、操作キーの照明構造としては、一定の輝
度で照明する必要があると共に、複数の操作キーを斑無
く一様に照明する必要がある。従来、操作キーの照明に
使用されている光源は複数の発光素子（例えば発光ダイ
オード（ＬＥＤ））をキーシートの下に配設している。
これにより、複数の操作キーを一定の輝度で斑無く照明
することができる。[0003] The portable terminal device is provided with a plurality of operation keys. The illumination structure of the operation keys needs to be illuminated at a constant brightness, and the operation keys need to be uniformly illuminated without unevenness. There is. Conventionally, a light source used for illuminating an operation key has a plurality of light emitting elements (for example, light emitting diodes (LEDs)) arranged under a key sheet.
Thereby, the plurality of operation keys can be illuminated at a constant luminance without unevenness.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、前述し
たような操作キーの照明構造では、ＬＥＤをキーシート
の下に配設しているため、複数の操作キーを一定輝度で
斑無く照明するには、多数のＬＥＤを使用する必要があ
る。したがって、高価になり又、消費電力が大きくなる
という問題があった。However, in the illumination structure of operation keys as described above, since the LEDs are arranged below the key sheet, it is necessary to illuminate a plurality of operation keys with a constant brightness without unevenness. Need to use a large number of LEDs. Therefore, there has been a problem that it is expensive and power consumption increases.
【０００５】本発明は、前記問題点に鑑み成されたもの
で、使用する発光素子の数を低減可能に構成することに
より、コストダウン及び消費電力の低減を可能にするこ
とを課題としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the number of light emitting elements to be used, thereby reducing costs and power consumption.
【０００６】[0006]
【課題を解決するための手段】本発明によれば、携帯端
末装置の筐体内に複数の操作キーを有する操作部と発光
素子とを配設し、前記発光素子からの光で前記操作部の
操作キーを照明する携帯端末装置の操作キー照明構造に
おいて、前記操作部に対向して配設された板状の導光部
材と、前記導光部材の側方に配設された発光素子とを備
え、前記発光素子からの光を前記導光部材を通して前記
操作部に導くことによって、前記操作キーを照明するこ
とを特徴とする携帯端末装置の操作キー照明構造が提供
される。発光素子からの光を導光部材を通して操作部に
導くことによって、操作キーを照明する。According to the present invention, an operation section having a plurality of operation keys and a light-emitting element are provided in a housing of a portable terminal device, and light from the light-emitting element is applied to the operation section. In an operation key illumination structure of a portable terminal device that illuminates an operation key, a plate-shaped light guide member disposed to face the operation unit, and a light emitting element disposed on a side of the light guide member. The operation key illumination structure of the portable terminal device is provided, wherein the operation key is illuminated by guiding light from the light emitting element to the operation unit through the light guide member. The operation key is illuminated by guiding light from the light emitting element to the operation unit through the light guide member.
【０００７】ここで、前記操作部は、複数の操作キーが
一体形成されたキーシートと、前記操作キーが操作され
たことを検出するための複数の検出部を有する透光性の
回路基板とを有し、前記導光部材は、板状に形成されて
前記回路基板に対向して配設されると共に、前記回路基
板に対向する面とその裏面の少なくとも一方に、前記発
光素子からの光を前記回路基板方向に反射する反射部が
形成されているように構成してもよい。Here, the operation section includes a key sheet integrally formed with a plurality of operation keys, a light-transmitting circuit board having a plurality of detection sections for detecting that the operation keys are operated. Wherein the light guide member is formed in a plate shape and disposed to face the circuit board, and at least one of a surface facing the circuit board and a back surface thereof has light from the light emitting element. May be formed such that a reflecting portion for reflecting the light in the direction of the circuit board is formed.
【０００８】また、前記反射部を、前記導光部材に形成
された溝で構成するようにしてもよい。また、前記導光
部材は長方形状に形成されると共にその短辺と平行な方
向に複数の前記溝が形成され、前記発光素子は前記導光
部材の短辺側部に配設されているように構成してもよ
い。[0008] Further, the reflection section may be constituted by a groove formed in the light guide member. Further, the light guide member is formed in a rectangular shape, and a plurality of the grooves are formed in a direction parallel to a short side thereof, and the light emitting element is disposed on a short side portion of the light guide member. May be configured.
【０００９】[0009]
【発明の実施の形態】以下、図面を用いて、本発明の実
施の形態に係る携帯端末装置の操作キー照明構造につい
て説明する。図１は本発明の実施の形態に係る携帯端末
装置の操作キー照明構造の分解斜視図であり又、図２は
本発明の実施の形態に係る携帯端末装置の操作キー照明
構造の部分正面図であり、携帯端末装置として携帯電話
機の例をあげている。また、図１及び図２において、同
一部分には同一符号を付している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The operation key lighting structure of a portable terminal device according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of the operation key illumination structure of the portable terminal device according to the embodiment of the present invention, and FIG. 2 is a partial front view of the operation key illumination structure of the portable terminal device according to the embodiment of the present invention. Thus, an example of a mobile phone is given as the mobile terminal device. 1 and 2, the same portions are denoted by the same reference numerals.
【００１０】図１及び図２において、長方形状の前面側
ケース１０１及び長方形状の背面側ケース１１５によっ
て携帯電話機の筐体が構成されている。前面側ケース１
０１には、複数の操作キー１０７を挿入して前記操作キ
ー１０７を筐体外に露出させるための複数の開口１０
２、表示部（図示せず）を視認可能に保護するための表
示窓１０３、送話用開口１０４、受話用開口１０５が設
けられている。In FIGS. 1 and 2, a rectangular front case 101 and a rectangular rear case 115 constitute a housing of a portable telephone. Front case 1
01, a plurality of openings 10 for inserting a plurality of operation keys 107 and exposing the operation keys 107 outside the housing.
2. A display window 103, a transmitting opening 104, and a receiving opening 105 for protecting a display unit (not shown) so as to be visible are provided.
【００１１】前面側ケース１０１と背面側ケース１１５
とによって構成された筐体内には、キーシート１０６、
透光性の回路基板１０８、及び、光透過性の材料によっ
て形成された導光部材１１３が積層配設されている。こ
こで、キーシート１０６及び回路基板１０８は操作部を
構成している。前面側ケース１０１に対向して配設され
たキーシート１０６は、複数の操作キー１０７が一体形
成されると共に長方形状で板状に形成されている。The front case 101 and the rear case 115
The key sheet 106,
A light-transmitting circuit board 108 and a light-guiding member 113 formed of a light-transmitting material are stacked. Here, the key sheet 106 and the circuit board 108 constitute an operation unit. The key sheet 106 disposed opposite the front case 101 has a plurality of operation keys 107 integrally formed and is formed in a rectangular plate shape.
【００１２】キーシート１０６に対向して配設された回
路基板１０８には、操作キー１０７が操作されたことを
検出するための複数の検出部１０９が一体形成されると
共に長方形状で板状に形成されている。回路基板１０８
は、光透過性の材料によって形成されたフレキシブル基
板によって構成されている。また、回路基板１０８に対
向して配設された導光部材１１０は、長方形状で板状に
形成されており、短辺側の側部に、発光素子としてのＬ
ＥＤ１１３、１１４が複数個一体に設けられている。A plurality of detectors 109 for detecting that an operation key 107 is operated are integrally formed on a circuit board 108 disposed opposite to the key sheet 106, and are formed in a rectangular plate shape. Is formed. Circuit board 108
Is constituted by a flexible substrate formed of a light transmissive material. Further, the light guide member 110 disposed opposite to the circuit board 108 is formed in a rectangular plate shape, and has a short side side with an L as a light emitting element.
A plurality of EDs 113 and 114 are provided integrally.
【００１３】また、導光部材１１０は、前記操作部に対
向する面及びその裏面（背面側ケース１１５側の面）の
うちの少なくとも一方の面には、ＬＥＤ１１３、１１４
からの光を前記操作部方向に反射する反射部が形成され
ているように構成されている。本実施の形態において
は、前記操作部に対向する面及びその裏面の両方の面
に、短辺方向と平行に、反射部として複数のＶ字状溝１
１１、１１２が形成されている。The light guide member 110 has LEDs 113 and 114 on at least one of a surface facing the operation portion and a back surface thereof (a surface on the side of the rear case 115).
It is configured such that a reflecting portion that reflects light from the light source toward the operation unit is formed. In the present embodiment, a plurality of V-shaped grooves 1 are provided on both the surface facing the operation portion and the back surface thereof as a reflection portion in parallel with the short side direction.
11 and 112 are formed.
【００１４】溝１１１、１１２は、携帯電話機を組み立
てた状態では操作キー１０７に対向しない位置、即ち、
複数の操作キー１０７の間に位置するように形成されて
いる。尚、前記反射部はＬＥＤ１１３、１１４からの光
を操作キー１０７側に反射するように構成されていれば
よいため、Ｖ字状溝以外の形状の溝でもよく、例えば、
サンドブラストによって形成した凹凸であってもよい。The grooves 111 and 112 are positioned so as not to face the operation keys 107 when the mobile phone is assembled, that is,
It is formed so as to be located between the plurality of operation keys 107. Incidentally, since the reflecting portion only needs to be configured to reflect the light from the LEDs 113 and 114 toward the operation key 107, a groove having a shape other than the V-shaped groove may be used.
Irregularities formed by sandblasting may be used.
【００１５】前記のように構成された携帯端末装置の操
作キー照明構造において、ＬＥＤ１１３、１１４から放
出されて導光部材１１０の端部に入射した光は、導光部
材１１０の中央部へ向かって導光部材１１０の長さ方向
に進む。前記入射光は、図２の矢印で示すように、溝１
１１、１１２で前記操作部側に反射される。これによっ
て、前記入射光は、前記回路基板１０８を通ってキーシ
ート１０６へ入射し、操作キー１０７を照明する。この
とき、溝１１１、１１２の角度を、前記入射光がキーシ
ート１０６側へ全反射するように構成しておくことによ
り、効率よく操作キー１０７を照明することができる。In the operation key illumination structure of the portable terminal device configured as described above, the light emitted from the LEDs 113 and 114 and incident on the end of the light guide member 110 is directed toward the center of the light guide member 110. The light guide member 110 advances in the length direction. As shown by the arrow in FIG.
At 11 and 112, the light is reflected toward the operation unit. Accordingly, the incident light enters the key sheet 106 through the circuit board 108, and illuminates the operation keys 107. At this time, the operation keys 107 can be efficiently illuminated by configuring the angles of the grooves 111 and 112 so that the incident light is totally reflected toward the key sheet 106 side.
【００１６】以上述べたように、本発明の実施の形態に
係る携帯端末装置の操作キー照明構造は、携帯端末装置
の筐体（前面側ケース１０１、背面側ケース１１５）内
に複数の操作キー１０７を有する操作部（キーシート１
０６、回路基板１０８）と発光素子（ＬＥＤ１１３、１
１４）とを配設し、前記発光素子によって前記操作部の
操作キー１０７を照明する携帯端末装置の操作キー照明
構造において、反射部１１１、１１２を有し前記操作部
に対向して配設された板状の導光部材１１０と、導光部
材１１０の側方に配設された発光素子（ＬＥＤ１１３、
１１４）とを備え、前記発光素子から導光部材１１０へ
入射した光を前記反射部で反射して前記操作部へ導くこ
とによって、操作キー１０７を照明することを特徴とし
ている。したがって、少数の発光素子を用いて構成する
ことが可能になり、コストダウン及び消費電力の低減が
可能になる。また、発光素子の数や輝度、反射部１１
１、１１２の数を適宜選定することによって、複数の操
作キー１０７を一定の輝度で斑無く照明することが可能
になる。As described above, the operation key illumination structure of the portable terminal device according to the embodiment of the present invention includes a plurality of operation keys provided in the housing (the front case 101 and the rear case 115) of the portable terminal device. Operation unit having 107 (key sheet 1)
06, circuit board 108) and light emitting elements (LED 113, 1
14), the operation key illumination structure of the portable terminal device for illuminating the operation keys 107 of the operation unit by the light emitting element, the operation key illumination structure having reflectors 111 and 112 and being arranged to face the operation unit. Plate-shaped light guide member 110 and light emitting elements (LED 113,
114), and the operation key 107 is illuminated by reflecting light incident on the light guide member 110 from the light emitting element by the reflection unit and guiding the light to the operation unit. Therefore, it is possible to use a small number of light-emitting elements, so that cost and power consumption can be reduced. In addition, the number and brightness of the light emitting elements, the reflection portion 11
By appropriately selecting the numbers 1 and 112, it becomes possible to illuminate the plurality of operation keys 107 with a constant luminance without unevenness.
【００１７】尚、携帯端末装置において、外部に光で表
示する部分(例えば、着信レンズ、エンブレム等)の光源
として、本実施の形態に係る照明構造を使用すれば、Ｌ
ＥＤを取り付ける基板が不要となり、コストダウンが可
能になる。また、本実施の形態では、携帯端末装置とし
て携帯電話機の例で説明したが、ＰＨＳ（Personal Han
dyphone System）やＰＤＡ（Personal Digital Assista
nt）等、操作キーを有する各種携帯端末装置の照明構造
に適用することが可能である。In the portable terminal device, if the illumination structure according to the present embodiment is used as a light source for a portion (for example, an incoming lens, an emblem, etc.) which is externally displayed with light, L
A substrate on which the ED is mounted is not required, and the cost can be reduced. Further, in the present embodiment, an example has been described in which a mobile phone is used as a mobile terminal device, but a PHS (Personal Han
dyphone System) or PDA (Personal Digital Assista)
nt), etc., can be applied to the lighting structure of various portable terminal devices having operation keys.
【００１８】[0018]
【発明の効果】本発明によれば、発光素子の数を低減す
ることが可能になり、したがって、コストダウン及び消
費電力の低減が可能になる。According to the present invention, it is possible to reduce the number of light emitting elements, so that cost and power consumption can be reduced.
【図１】 本発明の実施の形態に係る携帯端末装置の操
作キー照明構造の分解斜視図である。FIG. 1 is an exploded perspective view of an operation key illumination structure of a portable terminal device according to an embodiment of the present invention.
【図２】 本発明の実施の形態に係る携帯端末装置の操
作キー照明構造の部分正面図である。FIG. 2 is a partial front view of an operation key illumination structure of the portable terminal device according to the embodiment of the present invention.
１０１・・・前面側ケース １０２・・・開口 １０３・・・表示窓 １０４・・・送話用開口 １０５・・・受話用開口 １０６・・・操作部を構成するキーシート １０７・・・操作キー １０８・・・操作部を構成する回路基板 １０９・・・検出部 １１０・・・導光部材 １１１、１１２・・・反射部としての溝 １１３、１１４・・・発光素子としてのＬＥＤ １１５・・・背面側ケース Reference numeral 101: Front case 102: Opening 103: Display window 104: Transmission opening 105: Receiving opening 106: Key sheet constituting an operation unit 107: Operation keys Reference numeral 108: a circuit board constituting an operation unit 109: a detection unit 110: a light guide member 111, 112: a groove 113, 114 as a reflection unit 113, 114: an LED 115 as a light emitting element Back case
Claims (4)
を有する操作部と発光素子とを配設し、前記発光素子か
らの光で前記操作部の操作キーを照明する携帯端末装置
の操作キー照明構造において、 前記操作部に対向して配設された板状の導光部材と、前
記導光部材の側方に配設された発光素子とを備え、前記
発光素子からの光を前記導光部材を通して前記操作部に
導くことによって、前記操作キーを照明することを特徴
とする携帯端末装置の操作キー照明構造。1. An operation of a portable terminal device, wherein an operation unit having a plurality of operation keys and a light emitting element are arranged in a housing of the portable terminal device, and light from the light emitting element illuminates the operation keys of the operation unit. In the key illumination structure, a plate-shaped light guide member arranged to face the operation unit, and a light emitting element arranged on a side of the light guide member, the light from the light emitting element is The operation key illumination structure of the portable terminal device, wherein the operation key is illuminated by being guided to the operation unit through a light guide member.
成されたキーシートと、前記操作キーが操作されたこと
を検出するための複数の検出部を有する透光性の回路基
板とを有し、 前記導光部材は、板状に形成されて前記回路基板に対向
して配設されると共に、前記回路基板に対向する面とそ
の裏面の少なくとも一方に、前記発光素子からの光を前
記回路基板方向に反射する反射部が形成されていること
を特徴とする請求項１記載の携帯端末装置の操作キー照
明構造。2. An operation unit comprising: a key sheet integrally formed with a plurality of operation keys; and a light-transmitting circuit board having a plurality of detection units for detecting that the operation keys are operated. The light guide member is formed in a plate shape and disposed to face the circuit board, and the light from the light emitting element is applied to at least one of a surface facing the circuit board and a back surface thereof. 2. The operation key illumination structure for a portable terminal device according to claim 1, wherein a reflection portion that reflects in a direction of the circuit board is formed.
溝であることを特徴とする請求項２記載の携帯端末装置
の操作キー照明構造。3. The operation key illumination structure for a portable terminal device according to claim 2, wherein said reflection portion is a groove formed in said light guide member.
共にその短辺と平行な方向に複数の前記溝が形成され、
前記発光素子は前記導光部材の短辺側部に配設されてい
ることを特徴とする請求項３記載の携帯端末装置の操作
キー照明構造。4. The light guide member is formed in a rectangular shape and a plurality of the grooves are formed in a direction parallel to a short side thereof.
The operation key illumination structure for a portable terminal device according to claim 3, wherein the light emitting element is disposed on a short side of the light guide member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001104060A JP2002300258A (en) | 2001-04-03 | 2001-04-03 | Operation key lighting structure of portable terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001104060A JP2002300258A (en) | 2001-04-03 | 2001-04-03 | Operation key lighting structure of portable terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002300258A true JP2002300258A (en) | 2002-10-11 |
Family
ID=18956973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001104060A Pending JP2002300258A (en) | 2001-04-03 | 2001-04-03 | Operation key lighting structure of portable terminal device |
Country Status (1)
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| JP (1) | JP2002300258A (en) |
Cited By (15)
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|---|---|---|---|---|
| KR100606081B1 (en) | 2005-05-19 | 2006-07-28 | 삼성전자주식회사 | Light guide panel, keypad and keypad assembly |
| KR100606082B1 (en) | 2005-07-15 | 2006-07-31 | 삼성전자주식회사 | Keypad and keypad assembly |
| WO2006123894A1 (en) * | 2005-05-19 | 2006-11-23 | Samsung Electronics Co., Ltd. | Keypad assembly for a portable terminal |
| WO2006123882A1 (en) * | 2005-05-19 | 2006-11-23 | Samsung Electronics Co., Ltd. | Keypad, keypad assembly and portable terminal |
| EP1729205A2 (en) * | 2005-05-19 | 2006-12-06 | Samsung Electronics Co., Ltd. | Keypad assembly having reflection pattern |
| KR100676480B1 (en) | 2006-04-25 | 2007-02-02 | 주식회사 케이비에프 | Pcb with light guide plate for handheld device |
| EP1768012A2 (en) * | 2005-09-27 | 2007-03-28 | Samsung Electronics Co., Ltd. | Keypad having improved light guide ability, keypad assembly and portable terminal |
| KR100744324B1 (en) * | 2006-06-14 | 2007-07-30 | 삼성전자주식회사 | Keypad and keypad assembly |
| KR100744954B1 (en) | 2006-02-15 | 2007-08-02 | 루미마이크로 주식회사 | Button device of electroniic goods of using side led emitting and method thereof |
| WO2008010678A1 (en) * | 2006-07-21 | 2008-01-24 | Lumimicro Corp., Ltd. | Button device of electronic goods using ink printing and side led emitting and method thereof |
| KR100799667B1 (en) | 2006-03-30 | 2008-01-30 | 한국성전(주) | Processing Method of Plastic Optical Sheet For Assembly of The Key PCB Ass'y or Key Flexible PCB Ass'y |
| KR100807884B1 (en) * | 2006-07-13 | 2008-02-27 | 삼성전자주식회사 | Key-pad assembly |
| WO2008027716A1 (en) * | 2006-08-30 | 2008-03-06 | 3M Innovative Properties Company | Keypad light guide |
| WO2008082127A1 (en) * | 2007-01-03 | 2008-07-10 | Digilog Display Co., Ltd. | Printing type lighting guide sheet for light source |
| KR100945863B1 (en) | 2007-09-27 | 2010-03-09 | 엔아이티 주식회사 | Diffusion Lighting Keypad and A method of preparing the same |
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2001
- 2001-04-03 JP JP2001104060A patent/JP2002300258A/en active Pending
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| EP1729205A3 (en) * | 2005-05-19 | 2013-04-17 | Samsung Electronics Co., Ltd. | Keypad assembly having reflection pattern |
| WO2006123895A1 (en) * | 2005-05-19 | 2006-11-23 | Samsung Electronics Co., Ltd. | Keypad, keypad assembly and portable terminal |
| US7462794B2 (en) | 2005-05-19 | 2008-12-09 | Samsung Electronics Co., Ltd. | Key pad and keypad assembly |
| WO2006123882A1 (en) * | 2005-05-19 | 2006-11-23 | Samsung Electronics Co., Ltd. | Keypad, keypad assembly and portable terminal |
| US7378606B2 (en) | 2005-05-19 | 2008-05-27 | Samsung Electronics Co., Ltd. | Keypad and keypad assembly |
| EP1729205A2 (en) * | 2005-05-19 | 2006-12-06 | Samsung Electronics Co., Ltd. | Keypad assembly having reflection pattern |
| KR100606081B1 (en) | 2005-05-19 | 2006-07-28 | 삼성전자주식회사 | Light guide panel, keypad and keypad assembly |
| US7294803B2 (en) | 2005-05-19 | 2007-11-13 | Samsung Electronics Co., Ltd. | Key pad and keypad assembly |
| WO2006123894A1 (en) * | 2005-05-19 | 2006-11-23 | Samsung Electronics Co., Ltd. | Keypad assembly for a portable terminal |
| US7525454B2 (en) | 2005-05-19 | 2009-04-28 | Samsung Electronics Co., Ltd. | Keypad assembly for a portable terminal |
| KR100606082B1 (en) | 2005-07-15 | 2006-07-31 | 삼성전자주식회사 | Keypad and keypad assembly |
| EP1768012A2 (en) * | 2005-09-27 | 2007-03-28 | Samsung Electronics Co., Ltd. | Keypad having improved light guide ability, keypad assembly and portable terminal |
| KR100787581B1 (en) | 2005-09-27 | 2007-12-21 | 삼성전자주식회사 | Keypad having phosphor, keypad assembly and portable terminal |
| EP1768012A3 (en) * | 2005-09-27 | 2012-07-25 | Samsung Electronics Co., Ltd. | Keypad having improved light guide ability, keypad assembly and portable terminal |
| US7601926B2 (en) | 2005-09-27 | 2009-10-13 | Samsung Electronics Co., Ltd. | Keypad with phosphor, keypad assembly and portable terminal |
| KR100744954B1 (en) | 2006-02-15 | 2007-08-02 | 루미마이크로 주식회사 | Button device of electroniic goods of using side led emitting and method thereof |
| KR100799667B1 (en) | 2006-03-30 | 2008-01-30 | 한국성전(주) | Processing Method of Plastic Optical Sheet For Assembly of The Key PCB Ass'y or Key Flexible PCB Ass'y |
| KR100676480B1 (en) | 2006-04-25 | 2007-02-02 | 주식회사 케이비에프 | Pcb with light guide plate for handheld device |
| KR100744324B1 (en) * | 2006-06-14 | 2007-07-30 | 삼성전자주식회사 | Keypad and keypad assembly |
| KR100807884B1 (en) * | 2006-07-13 | 2008-02-27 | 삼성전자주식회사 | Key-pad assembly |
| WO2008010678A1 (en) * | 2006-07-21 | 2008-01-24 | Lumimicro Corp., Ltd. | Button device of electronic goods using ink printing and side led emitting and method thereof |
| US7498534B2 (en) | 2006-08-30 | 2009-03-03 | 3M Innovative Properties Company | Keypad light guide |
| WO2008027716A1 (en) * | 2006-08-30 | 2008-03-06 | 3M Innovative Properties Company | Keypad light guide |
| EP2057651A1 (en) * | 2006-08-30 | 2009-05-13 | 3M Innovative Properties Company | Keypad light guide |
| EP2057651A4 (en) * | 2006-08-30 | 2012-09-05 | 3M Innovative Properties Co | Keypad light guide |
| WO2008082127A1 (en) * | 2007-01-03 | 2008-07-10 | Digilog Display Co., Ltd. | Printing type lighting guide sheet for light source |
| KR100945863B1 (en) | 2007-09-27 | 2010-03-09 | 엔아이티 주식회사 | Diffusion Lighting Keypad and A method of preparing the same |
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