JP2019513300A - 光拡散の方法と装置 - Google Patents
光拡散の方法と装置 Download PDFInfo
- Publication number
- JP2019513300A JP2019513300A JP2018548830A JP2018548830A JP2019513300A JP 2019513300 A JP2019513300 A JP 2019513300A JP 2018548830 A JP2018548830 A JP 2018548830A JP 2018548830 A JP2018548830 A JP 2018548830A JP 2019513300 A JP2019513300 A JP 2019513300A
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- Prior art keywords
- led
- substrate
- reflective element
- leds
- diffusion
- Prior art date
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Abstract
Description
本出願は、2016年3月18日出願の米国特許出願第15/075,001号「Method and Apparatus for Light Diffusion」の優先権を主張し、その内容全体を参照により本明細書に組み込む。本出願は、さらに、2015年11月12日出願の米国特許出願第14/939,896号「Method and Apparatus for Transfer of Semiconductor Devices」を参照により、その全体を組み込む。
本出願の実施形態によると、図2は、ディスプレイ面の平面に対応する拡散部の平面にわたって分散される複数の行と列として配置されてよい光源アレイを実現することによって、入れ子拡散部を形成する装置200を示す。さらに、及び/または、あるいは、光源は、行と列以外のパターンで拡散部全体に分散されてよい。
本出願の実施形態による、LEDを作成する方法900を図9に示す。方法900は、半導体を形成するステップ902を含む。ある例においては、半導体を形成するステップは、LEDとして使用される従来の半導体を形成するのに使用されるステップと類似であってよい。他の例においては、他のステップを行ってよい。方法900は、さらに、反射面を有する第1の反射素子を作成するステップ904を含む。第1の反射素子は、反射面が半導体に向かって内部に光を反射するように、半導体の第1の側に作成される。さらに、906において、反射面を有する第2の反射素子が作成される。第2の反射素子は、第2の反射素子の反射面が、半導体に向かって、また、第1の反射素子に向かって内部に光を反射するように、半導体の第1の側と反対の半導体の第2の側に作成される。
本出願の実施形態による入れ子拡散部を作成する方法1000を図10に示す。方法1000は、拡散基板を取得するステップ1002を含む。ある例においては、拡散基板を取得するステップは、基板上に上記テクスチャ特徴を作成する追加のステップを含んでよい。テクスチャ特徴は、レーザーエッチング、ナーリング、成形、きさげ加工等を介して作成されてよい。あるいは、ある例においては、テクスチャ特徴は、拡散基板に前もって追加されていてもよく、または、拡散基板は、テクスチャ特徴を全く含まなくてもよい。他の例においては、他のステップが行われてよい。方法1000は、1つまたは複数のLEDを拡散基板内に入れ子にするステップ1004をさらに含む。ステップ1004は、LEDを回路基板に取り付ける前または後で行われてよい。さらに、1006において、入れ子拡散部をLCD装置に配置する任意選択のステップが行われてよい。
A:基板と、LEDであって、前記LEDの第1の側に導電パッドを介して前記基板に取り付けられた前記LEDとを含む装置であって、前記LEDは、前記基板から離れる方向に光を反射するように前記LEDの前記第1の側に隣接して配置された第1の反射素子と、前記LEDの前記第1の側の反対の前記LEDの第2の側に隣接して配置された第2の反射素子とを含み、前記第2の反射素子は、主に光を前記基板に向かう方向に反射するように配置された、前記装置。
幾つかの実施形態を構造的特徴、及び/または、方法論的行為に特有の言葉で記載したが、請求項は、記載した特定の特徴にも行為にも必ずしも制限されないことは理解されたい。むしろ、特定の特徴及び行為は、特許を請求する主題を実施する説明のための形として開示した。
Claims (45)
- 基板と、
LEDであって、前記LEDの第1の側に導電パッドを介して前記基板に取り付けられたLEDと
を含む装置であって、前記LEDは、
前記基板から離れる方向に光を反射するように、前記LEDの前記第1の側に隣接して配置された第1の反射素子と、
前記LEDの前記第1の側の反対の前記LEDの第2の側に隣接して配置された第2の反射素子であって、主に前記基板に向かう方向に光を反射するように配置された前記第2の反射素子と、
を含む、前記装置。 - 前記LEDは、第1のLEDであり、
前記装置は、前記基板に配置された第2のLEDであって、前記第1のLEDから間隔を置いた前記第2のLEDをさらに含み、
前記第1のLEDと前記第2のLEDの間の前記基板の部分は、前記基板から離れる方向に光を反射するように配置された反射面を含む、
請求項1に記載の装置。 - 前記LEDは、第1のLEDであり、
前記装置は、前記基板に配置された第2のLEDであって、前記第1のLEDから間隔を置いた前記第2のLEDをさらに含み、
前記第2のLEDは、前記基板から離れる方向に光を反射するように、前記第2のLEDの第1の側に隣接して配置された第1の反射素子、または、前記基板の方向に光を反射するように、第2の側に隣接して配置された第2の反射素子の少なくとも1つを含む、
請求項1に記載の装置。 - 拡散部であって、前記拡散部内に前記LEDを入れ子にするように前記LEDに整列する前記拡散部をさらに含み、前記拡散部の材料は、シリコン、ポリカーボネート(PC)、または、ポリエチレンテレフタレート(PET)の少なくとも1つを含む、請求項1に記載の装置。
- 前記基板に隣接する前記LEDと共に入れ子になるように配置された成形用ポリマーフィルムで形成された拡散部をさらに含む、請求項1に記載の装置。
- 前記基板に配置され、前記LEDの前記導電パッドに接続された導電トレースをさらに含む、請求項1に記載の装置。
- 前記基板は、プリント基板(PCB)である、請求項1に記載の装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、前記LEDの幅の少なくとも一部に延在する、請求項1に記載の装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、前記LEDの幅全体にわたって延在する、請求項1に記載の装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、前記LEDの電流拡散層として形成される、請求項1に記載の装置。
- 前記第1の反射素子または前記第2の反射素子のうちの少なくとも1つの材料は、アルミニウム、銀、TiO2、SiO2、HfO2、Ta2O5、または、白色の拡散ポリマーベースの反射材料の1つである、請求項1に記載の装置。
- 拡散基板と、
前記拡散基板内に入れ子にされたLEDアレイと、
を含む装置であって、各LEDは、そのLEDの第1の側に導電パッドを含み、各LEDは、
前記拡散基板の平面を横切る第1の方向に光を反射するように、前記LEDの前記第1の側に隣接して配置された第1の反射素子と、
前記LEDの前記第1の側と反対の前記LEDの第2の側に隣接して配置された第2の反射素子であって、前記拡散基板の平面を横切る第2の方向であって、前記第1の方向の反対の前記第2の方向に光を反射するように配置された前記第2の反射素子と
を含む、前記装置。 - 前記LEDに取り付けられた回路基板をさらに含む、請求項12に記載の装置。
- 前記拡散基板は、テクスチャ特徴を含む、請求項13に記載の装置。
- 前記拡散基板の表面は、前記LEDアレイの少なくとも1つのLEDの周りに円周方向に延在するテクスチャ特徴を含む、請求項12に記載の装置。
- 特定のテクスチャ特徴の最大寸法のサイズが、前記少なくとも1つのLEDと前記特定のテクスチャ特徴との間の半径方向距離によって決まる、請求項15に記載の装置。
- 前記少なくとも1つのLEDから第1の半径方向距離に配置された第1の特定のテクスチャ特徴の最大寸法が、前記少なくとも1つのLEDから第2の半径方向距離に配置された第2の特定のテクスチャ特徴の最大寸法未満で、前記第1の半径方向距離は、前記第2の半径方向距離より小さい、請求項15に記載の装置。
- 前記拡散基板の表面は、前記LEDアレイの各LEDの周りに円周方向に延在するテクスチャ特徴を含み、
各テクスチャ特徴のサイズは、1つまたは複数のLEDからの半径方向距離によって決まる、
請求項12に記載の装置。 - 2つの隣り合うLED間の距離の中間に配置された特定のテクスチャ特徴の深さ及び/または幅は、前記2つの隣接するLEDの中間の前記距離未満に位置するテクスチャ特徴の対応する深さ及び/または幅より大きい、請求項18に記載の装置。
- 回路基板と、
前記回路基板にほぼ平行に配置されたディスプレイパネルと、
前記回路基板と前記ディスプレイパネルとの間に配置された拡散基板と、
前記拡散基板の平面にわたって入れ子にされた列と行のLEDアレイであって、前記回路基板に取り付けられた前記LEDアレイと、
を含む装置であって、各LEDは、そのLEDの第1の側に導電パッドを介して取り付けられ、各LEDは、
前記拡散基板の平面を横切る第1の方向に光を反射するように、前記LEDの前記第1の側に隣接して配置された第1の反射素子、
前記LEDの前記第1の側の反対の前記LEDの第2の側に隣接して配置された第2の反射素子であって、前記拡散基板の平面を横切る第2の方向であって、前記第1の方向と反対の前記第2の方向に光を反射するように配置された前記第2の反射素子、
のうちの少なくとも1つを含み、
前記拡散基板は、前記LEDアレイの1つまたは複数のLEDの周りに円周方向に延在するテクスチャ特徴を含む、
前記装置。 - 約12ミクロンから約100ミクロンに及ぶ平均厚さを有する拡散基板と、
前記拡散基板に入れ子にされた光源であって、導電パッドを含み、前記導電パッドを介して、電力を与えられ、前記拡散基板を照らすように構成された前記光源と、
を含む、装置。 - 基板と、
複数のLEDであって、各LEDは、第1の側と第2の側を有し、各LEDは、そのLEDの前記第1の側で導電パッドを介して前記基板に取り付けられ、各LEDは、
前記基板から離れる方向に光を反射するように前記LEDの前記第1の側に隣接して配置された第1の反射素子と、
前記LEDの前記第1の側と反対の前記LEDの前記第2の側に隣接して配置された第2の反射素子であって、主に前記基板に向かう方向に光を反射するように配置された前記第2の反射素子と、
を含む前記複数のLEDと、
前記基板の表面に対して前記複数のLEDと整列した光拡散特性を有する拡散部であって、前記複数のLEDの少なくとも1つのLEDの周囲で入れ子になるように整列された前記拡散部と、
を含む、ディスプレイ装置。 - 前記複数のLEDは、前記基板上で互いに間隔を置いた第1のLEDと第2のLEDとを含み、
前記第1のLEDと前記第2のLEDの間の前記基板の部分は、前記基板から離れる方向に光を反射するように反射面を含む、
請求項22に記載のディスプレイ装置。 - 前記複数のLEDは、前記基板上で互いに間隔を置いた第1のLEDと第2のLEDとを含む、請求項22に記載のディスプレイ装置。
- 前記拡散部の前記材料は、シリコン、ポリカーボネート(PC)、または、ポリエチレンテレフタレート(PET)の少なくとも1つを含む、請求項22に記載のディスプレイ装置。
- 前記拡散部は、成形用ポリマーフィルムから形成される、請求項22に記載のディスプレイ。
- 前記基板上に配置され、前記複数のLEDの各LEDの前記導電パッドに接続された導電トレースをさらに含む、請求項22に記載のディスプレイ装置。
- 前記基板は、プリント基板(PCB)である、請求項22に記載のディスプレイ装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、前記複数のLEDの少なくとも1つの幅の少なくとも一部に延在する、請求項22に記載のディスプレイ装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、前記複数のLEDの少なくとも1つのLEDの幅全体にわたって延在する、請求項22に記載のディスプレイ装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つは、電流拡散層として形成される、請求項22に記載のディスプレイ装置。
- 前記第1の反射素子または前記第2の反射素子の少なくとも1つの材料は、アルミニウム、銀、TiO2、SiO2、HfO2、Ta2O5、または、白色の拡散ポリマーベースの反射材料の1つである、請求項22に記載のディスプレイ装置。
- 前記複数のLEDの少なくとも1つは、50ミクロン未満の厚さを有する、請求項22に記載の装置。
- 前記基板、前記複数のLEDの少なくとも1つ、及び、前記拡散部は合わせて、170ミクロン未満の厚さを有する、請求項22に記載の装置。
- 前記拡散部の厚さ寸法は、それぞれ、前記複数のLEDの高さ寸法とほぼ同じである、請求項22に記載の装置。
- 前記拡散部は、第1の側及び第2の側を有し、前記拡散部の前記第1の側は、前記基板から離れる方向に光を反射する反射面を含む、請求項22に記載の装置。
- 拡散基板と、
前記拡散基板内に入れ子になるように前記拡散基板と整列したLEDアレイと
を含む装置であって、各LEDは、そのLEDの第1の側に導電パッドを含み、各LEDは、
前記拡散基板の平面を横切る第1の方向に光を反射するように、前記LEDの前記第1の側に隣接して配置された第1の反射素子と、
前記LEDの前記第1の側の反対の前記LEDの第2の側に隣接して配置された第2の反射素子であって、前記拡散基板の平面を横切る第2の方向であって、前記第1の方向と反対の前記第2の方向に光を反射するように配置された前記第2の反射素子と、
を含み、
前記拡散基板の厚さ寸法は、前記LEDアレイの高さ以下である、
前記装置。 - 前記LEDに取り付けられた回路基板をさらに含む、請求項37に記載の装置。
- 前記拡散基板は、テクスチャ特徴を含む、請求項38に記載の装置。
- 前記拡散基板の表面は、前記LEDアレイの少なくとも1つのLEDの周りに円周方向に延在するテクスチャ特徴を含む、請求項37に記載の装置。
- 特定のテクスチャ特徴の最大寸法のサイズは、前記少なくとも1つのLEDと前記特定のテクスチャ特徴との間の半径方向距離によって決まる、請求項40に記載の装置。
- 前記少なくとも1つのLEDから第1の半径方向距離に配置された第1の特定のテクスチャ特徴の最大寸法は、前記少なくとも1つのLEDから第2の半径方向距離に配置された第2の特定のテクスチャ特徴の最大寸法未満であり、前記第1の半径方向距離は、前記第2の半径方向距離より短い、請求項40に記載の装置。
- 前記拡散基板の表面は、前記LEDアレイの各LEDの周りに円周方向に延在するテクスチャ特徴を含み、
各テクスチャ特徴のサイズは、1つまたは複数のLEDからの半径方向距離によって決まる、
請求項37に記載の装置。 - 2つの隣り合うLED間の距離の中間に配置された特定のテクスチャ特徴の深さ及び/または幅は、前記2つの隣接するLEDの中間の前記距離未満に配置されたテクスチャ特徴の対応する深さ及び/または幅より大きい、請求項43に記載の装置。
- 回路基板と、
前記回路基板にほぼ平行に配置されたディスプレイパネルと、
前記回路基板と前記ディスプレイパネルとの間に配された拡散基板と、
前記拡散基板と整列し、前記回路基板に取り付けられるように、前記拡散基板の平面にわたって入れ子にされた列及び行のLEDアレイと、
を含む、装置であって、各LEDは、そのLEDの第1の側に導電パッドを介して取り付けられ、各LEDは、
前記拡散基板の平面を横切る第1の方向に光を反射するように、前記LEDの前記第1の側に隣接して配置された第1の反射素子、または、
前記LEDの前記第1の側の反対の前記LEDの第2の側に隣接して配置された第2の反射素子であって、前記拡散基板の平面を横切る第2の方向であって、前記第1の方向と反対の前記第2の方向に光を反射するように配置された前記第2の反射素子、
の少なくとも1つを含み、
前記拡散基板は、前記LEDアレイの1つまたは複数のLEDの周りに円周方向に延在するテクスチャ特徴を含む、
前記装置。
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