JP5827302B2 - 発光ダイオード - Google Patents
発光ダイオード Download PDFInfo
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- JP5827302B2 JP5827302B2 JP2013249717A JP2013249717A JP5827302B2 JP 5827302 B2 JP5827302 B2 JP 5827302B2 JP 2013249717 A JP2013249717 A JP 2013249717A JP 2013249717 A JP2013249717 A JP 2013249717A JP 5827302 B2 JP5827302 B2 JP 5827302B2
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- 230000001154 acute effect Effects 0.000 claims description 11
- NCGICGYLBXGBGN-UHFFFAOYSA-N 3-morpholin-4-yl-1-oxa-3-azonia-2-azanidacyclopent-3-en-5-imine;hydrochloride Chemical compound Cl.[N-]1OC(=N)C=[N+]1N1CCOCC1 NCGICGYLBXGBGN-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 48
- 238000009792 diffusion process Methods 0.000 description 23
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
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- 239000003086 colorant Substances 0.000 description 3
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- 238000002834 transmittance Methods 0.000 description 3
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- 238000012986 modification Methods 0.000 description 2
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- 239000010408 film Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
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- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/008—Combination of two or more successive refractors along an optical axis
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/04—Refractors for light sources of lens shape
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
- G02B19/0009—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only
- G02B19/0014—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed having refractive surfaces only at least one surface having optical power
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
- G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
- G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
- G02B19/0061—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source the light source comprising a LED
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/04—Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
-
- 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
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/54—Encapsulations having a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/58—Optical field-shaping elements
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Led Device Packages (AREA)
- Lenses (AREA)
- Planar Illumination Modules (AREA)
- Optical Elements Other Than Lenses (AREA)
- Led Devices (AREA)
- Liquid Crystal (AREA)
- Electroluminescent Light Sources (AREA)
Description
前記外側レンズの下に配置されている発光チップと、を含む発光ダイオードであって、前記第1最中央曲面と前記第1次中央曲面の境界及び前記第1次中央曲面と前記第1周辺曲面の境界には凹凸が形成されており、前記発光チップの表面の任意の地点から前記第1次中央曲面の内部の輪郭面における任意の地点までの距離は、前記第1次中央曲面の輪郭面の前記任意の地点の曲率半径より短く、前記第1周辺曲面は、その表面から出射される光を前記外側レンズの中心軸側の上側方向に出射させ、前記第1次中央曲面は外側に凸であり、前記第1最中央曲面は、前記外側レンズの中心軸に対して対称に形成され、前記第1次中央曲面と逆側に凸であり、前記外側レンズの底面の中央に上側に凸の空洞が形成されており、前記空洞の内部表面は第2周辺曲面及び前記第2周辺曲面から延長された中央曲面からなり、前記発光チップ表面の任意の地点から前記中央曲面の任意の地点までの距離は、前記中央曲面の前記任意の地点の曲率半径よりも長く、前記発光チップを覆っており、前記レンズの中央空洞の内部に形成されている内側レンズを更に含み、前記内側レンズは、底面と、前記底面から延長された第3周辺曲面と、前記第3周辺曲面から延長された第2中央曲面と、を有し、前記発光チップ表面の任意の地点から前記第2中央曲面の任意の地点までの距離は、前記第2中央曲面の前記任意の地点の曲率半径よりも短いことを特徴とする、発光ダイオードを提供する。
<液晶表示装置の構成>
図1は、本発明の一実施例による液晶表示装置のブロック図である。図2は、本発明の一実施例による液晶表示装置の分解斜視図である。図3は、本発明の一実施例による液晶表示装置の一つの画素に対する等価回路図である。
<液晶表示装置の表示動作>
次に、このような液晶表示装置の表示動作について詳細に説明する。
以下より、本発明の一実施例による光源部910、即ち、バックライト装置を構成する発光ダイオードについて、図4、図5、及び図6を参考にして詳細に説明する。
<発光ダイオードの他の実施例>
図7は、本発明の他の実施例による発光ダイオードの透視図である。図8は、図7の発光ダイオードの垂直断面図である。
(数1)
A1+A2<90+sin-1(1/n)・・・ (1)
最中央曲面11がこのような条件を満たせば、発光チップ15が発散する光は最中央曲面11で屈折して分散されるのみであって、全反射は起こらない。したがって、大部分の光がレンズの最中央曲面11及び次中央曲面12を通じて上方向に分散されながら発散する。
以下より、図13を参考にして、式(1)の意味を説明する。
(数2)
sinAr/sinAi=n/1 ・・・ (2)
全反射が起こる場合は、Ar=90°であるので、臨界入射角Aiは、
(数3)
sinAi=1/n ・・・ (3)
(数4)
Ai=sin-1(1/n) ・・・ (4)
である。したがって、全反射が起こらない条件は、
(数5)
Ai<sin-1(1/n) ・・・ (5)
である。
(数6)
A1+A2+A3=180° ・・・ (6)
となり、図13を参考にすると、
(数7)
Ai+A3=90° ・・・ (7)
である。式(5)、(6)、(7)をA1及びA2に対し整理すると、式(1)が得られる。つまり、式(1)は発光チップ15が発散した光が最中央曲面11で全反射が起こらない条件である。
2、6、13、17 周辺曲面
14、31 底面
3 液晶層
4、15 発光チップ
7、18 支持体
8、19、20 凹凸
9 中央空洞
11 最中央曲面
12 次中央曲面
22 内側レンズ
100 下部表示板
190 画素電極
200 上部表示板
270 共通電極
300 液晶表示組立体
330 表示部
340 バックライト部
341 反射板
342 導光板
343 光学シート
344 発光ダイオード(LED)
345 PCB基板
349 光源体
350 液晶モジュール
361 前面シャーシ
362 後面シャーシ
363、364 モールドフレーム
400 ゲート駆動部
410 ゲートテープキャリアパッケージ(ゲートTCP)
450 ゲート印刷回路基板(ゲートPCB)
500 データ駆動部
510 データテープキャリアパッケージ(データTCP)
550 データ印刷回路基板(データPCB)
600 信号制御部
800 階調電圧生成部
910 光源部
920 光源駆動部
101、301 外側レンズ
401、601、801 内側レンズ
Claims (4)
- 底面と、前記底面から延長された第1周辺曲面と、前記第1周辺曲面から延長された第1中央曲面を有する外側レンズと、
前記外側レンズの下に配置されている発光チップと、を含む発光ダイオードであって、
前記第1中央曲面と前記第1周辺曲面の境界には凹凸が形成されており、
前記発光チップ表面の任意の地点から前記第1中央曲面の輪郭面における任意の地点までの距離は、前記第1中央曲面の輪郭面の前記任意の地点の曲率半径よりも短く、
前記第1周辺曲面は、その表面から出射される光を前記外側レンズの中心軸側の上側方向に出射させ、
前記外側レンズの底面の中央に空洞が形成されており、
前記発光チップを覆っており、前記外側レンズの中央空洞の内部に形成されている内側レンズを更に含み、
前記内側レンズは、底面と、前記底面から延長された第5周辺曲面と、前記第5周辺曲面から延長された次中央曲面と、前記次中央曲面から延長された最中央曲面と、を有し、
前記発光チップ表面の任意の地点から前記次中央曲面の任意の地点までの距離は、前記次中央曲面の前記任意の地点の曲率半径よりも短く、
前記最中央曲面は、前記内側レンズの中心軸に対して対称に形成され、前記次中央曲面と逆側に凸であり、
前記最中央曲面の任意の地点での接線が前記内側レンズの中心軸となす角のうち内角をA1とし、前記発光チップ表面の中心及び前記最中央曲面の前記任意の地点を連結する直線が前記内側レンズの中心軸となす鋭角をA2とすると、A1+A2<90+sin −1 (1/n)を満たすことを特徴とする発光ダイオード。 - 前記空洞の内部表面は第2周辺曲面及び第2中央曲面からなり、
前記発光チップ表面の任意の地点から前記第2中央曲面の任意の地点までの距離は、前記第2中央曲面の前記任意の地点の曲率半径よりも長いことを特徴とする請求項1に記載の発光ダイオード。 - 屈折率がnである物質からなり、底面と、前記底面から延長された第1周辺曲面と、前記第1周辺曲面から延長された第1次中央曲面と、前記第1次中央曲面から延長された第1最中央曲面と、を有する外側レンズと、
前記外側レンズの下に配置されている発光チップと、を含む発光ダイオードであって、
前記第1最中央曲面と前記第1次中央曲面の境界及び前記第1次中央曲面と前記第1周辺曲面の境界には凹凸が形成されており、
前記発光チップの表面の任意の地点から前記第1次中央曲面の内部の輪郭面における任意の地点までの距離は、前記第1次中央曲面の輪郭面の前記任意の地点の曲率半径より短く、
前記第1周辺曲面は、その表面から出射される光を前記外側レンズの中心軸側の上側方向に出射させ、
前記第1次中央曲面は外側に凸であり、前記第1最中央曲面は、前記外側レンズの中心軸に対して対称に形成され、前記第1次中央曲面と逆側に凸であり、
前記外側レンズの底面の中央に上側に凸の空洞が形成されており、
前記空洞の内部表面は第2周辺曲面及び前記第2周辺曲面から延長された中央曲面からなり、
前記発光チップ表面の任意の地点から前記中央曲面の任意の地点までの距離は、前記中央曲面の前記任意の地点の曲率半径よりも長く、
前記発光チップを覆っており、前記外側レンズの中央空洞の内部に形成されている内側レンズを更に含み、
前記内側レンズは、底面と、前記底面から延長された第3周辺曲面と、前記第3周辺曲面から延長された第2中央曲面と、を有し、
前記発光チップ表面の任意の地点から前記第2中央曲面の任意の地点までの距離は、前記第2中央曲面の前記任意の地点の曲率半径よりも短く、
前記第1最中央曲面の任意の地点での接線が前記外側レンズの中心軸となす角のうち内角をA1とし、前記発光チップ表面の中心及び前記第1最中央曲面の前記任意の地点を連結する直線が前記外側レンズの中心軸となす鋭角をA2とすると、A1+A2<90+sin −1 (1/n)を満たすことを特徴とする発光ダイオード。 - 前記第1最中央曲面は、円錐状に凹んでいることを特徴とする請求項3に記載の発光ダイオード。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2004-083146 | 2004-10-18 | ||
KR1020040083146A KR101080355B1 (ko) | 2004-10-18 | 2004-10-18 | 발광다이오드와 그 렌즈 |
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JP2012267158A Division JP5567106B2 (ja) | 2004-10-18 | 2012-12-06 | 発光ダイオード及びそのレンズ |
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JP2014254162A Division JP5899301B2 (ja) | 2004-10-18 | 2014-12-16 | 発光ダイオード |
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JP2014082506A JP2014082506A (ja) | 2014-05-08 |
JP5827302B2 true JP5827302B2 (ja) | 2015-12-02 |
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JP2005036554A Active JP5264043B2 (ja) | 2004-10-18 | 2005-02-14 | 発光ダイオード及びそのレンズ |
JP2012267158A Active JP5567106B2 (ja) | 2004-10-18 | 2012-12-06 | 発光ダイオード及びそのレンズ |
JP2013249717A Active JP5827302B2 (ja) | 2004-10-18 | 2013-12-03 | 発光ダイオード |
JP2014254162A Active JP5899301B2 (ja) | 2004-10-18 | 2014-12-16 | 発光ダイオード |
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JP2005036554A Active JP5264043B2 (ja) | 2004-10-18 | 2005-02-14 | 発光ダイオード及びそのレンズ |
JP2012267158A Active JP5567106B2 (ja) | 2004-10-18 | 2012-12-06 | 発光ダイオード及びそのレンズ |
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US (4) | US7572036B2 (ja) |
EP (1) | EP1653254B1 (ja) |
JP (4) | JP5264043B2 (ja) |
KR (1) | KR101080355B1 (ja) |
CN (1) | CN100465723C (ja) |
TW (3) | TWI596382B (ja) |
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JP3875247B2 (ja) * | 2004-09-27 | 2007-01-31 | 株式会社エンプラス | 発光装置、面光源装置、表示装置及び光束制御部材 |
US7352011B2 (en) * | 2004-11-15 | 2008-04-01 | Philips Lumileds Lighting Company, Llc | Wide emitting lens for LED useful for backlighting |
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Publication number | Publication date |
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US7572036B2 (en) | 2009-08-11 |
KR20060034021A (ko) | 2006-04-21 |
US20060083000A1 (en) | 2006-04-20 |
TWI606269B (zh) | 2017-11-21 |
TWI390248B (zh) | 2013-03-21 |
TW201700997A (zh) | 2017-01-01 |
EP1653254B1 (en) | 2024-07-24 |
JP2014082506A (ja) | 2014-05-08 |
US20110242820A1 (en) | 2011-10-06 |
EP1653254A2 (en) | 2006-05-03 |
JP2015099926A (ja) | 2015-05-28 |
KR101080355B1 (ko) | 2011-11-04 |
CN100465723C (zh) | 2009-03-04 |
TWI596382B (zh) | 2017-08-21 |
US20090279312A1 (en) | 2009-11-12 |
EP1653254A3 (en) | 2006-06-07 |
US8696175B2 (en) | 2014-04-15 |
TW201305612A (zh) | 2013-02-01 |
JP2013077830A (ja) | 2013-04-25 |
JP5264043B2 (ja) | 2013-08-14 |
US20140043831A1 (en) | 2014-02-13 |
US7963680B2 (en) | 2011-06-21 |
JP5899301B2 (ja) | 2016-04-06 |
TW200613767A (en) | 2006-05-01 |
US9200778B2 (en) | 2015-12-01 |
JP2006114863A (ja) | 2006-04-27 |
CN1763603A (zh) | 2006-04-26 |
JP5567106B2 (ja) | 2014-08-06 |
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