JPWO2013145071A1 - Ledパッケージ及びその製造方法 - Google Patents
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Abstract
Description
機能し、前記LEDチップは、前記電極が形成された面を前記光透過型ケースとは反対側に向けて該光透過型ケースに実装された構成となっている。
うにすれば、ワイヤボンディングを使用せずに配線でき、ワイヤボンディング時の熱的な影響を受けずに済む利点がある。
本実施例1のLEDパッケージ10は、光透過型ケース作製工程、実装工程、配線工程等を経て製造する。以下、これら各工程を説明する。
図1(a)に示すように、光透過型ケース作製工程では、LEDチップ12を実装する実装部材としても機能する光透過型ケース11を作製する。光透過型ケース11の作製方法は、成形、切削、エッチング等、どのような方法を用いても良い。光透過型ケース作製工程は、LEDチップ12を実装する前であるため、LEDチップ12やLEDチップ12を実装する光透過型ケース11の接続信頼性や耐熱性等に配慮する必要がなく、LEDチップ12の光を透過させる光透過型ケース11として要求される光学的特性(透明性等)、耐候性、耐熱性等に優れた材料(例えばガラス等)を用いて光透過型ケース11を作製すれば良い。
図1(b)に示すように、光透過型ケース11のうちの光取り出し側とは反対側の面(内面)にLEDチップ12を実装する。この際、LEDチップ12は、電極14が形成された面とは反対側の面を光透過型ケース11の内面に接着剤等で接合する。LEDチップ12は、フェイスアップ型のLEDチップ、フリップチップ型のLEDチップのいずれを用いても良いが、フリップチップ型のLEDチップを用いる場合は、バンプや半田ボール等の電極接続材は不要であり、電極のみが存在すれば良い。
図1(c)に示すように、LEDチップ12の電極14とリードフレーム13の電極との間をボンディングワイヤ15で接続する。
耐熱性等を向上させることができる。
EDチップ12の側面上端から光透過型ケース11の内面に向けて傾斜するスロープ状の配線経路(配線下地層)を形成し、このスロープ状の配線経路上に配線22を印刷又は塗布で形成する際に、配線22が光反射面を兼ねるように銀ナノインク等により面状に形成しても良い。この場合、LEDチップ12の側面からスロープ状の絶縁材21側に向けて放出された光が面状の配線22(光反射面)で光透過型ケース11側に反射されるようになるため、光取り出し効率を向上できる。
尚、配線22は面状に形成せず、リードフレーム13のみを面状に形成して、面状のリードフレーム13のみで光反射面を形成するようにしても良い。
は、LEDチップ12の電極14側の面や配線22等に密着して、LEDチップ12や配線22で発生した熱を回路基板24へ効率良く伝達する放熱性部材として機能すると共に、LEDパッケージ10のLEDチップ12やその配線22等を封止する封止材としても機能する。
前記各実施例1〜14では、いずれも1つの光透過型ケース11に1つのLEDチップ12を実装したが、1つの光透過型ケース11に複数のLEDチップ12を実装するようにしても良い。
Claims (14)
- 一方の面に電極が形成されたLEDチップと、該LEDチップの光を外方に取り出す光透過型ケースとを備えたLEDパッケージにおいて、
前記光透過型ケースは、前記LEDチップを実装する実装部材としても機能し、
前記LEDチップは、前記電極が形成された面を前記光透過型ケースとは反対側に向けて該光透過型ケースに実装されていることを特徴とするLEDパッケージ。 - 前記LEDチップは、前記電極が形成された面と反対側の面を発光面とするフリップチップ型のLEDチップであることを特徴とする請求項1に記載のLEDパッケージ。
- 前記光透過型ケースは、レンズとして機能するように形成されていることを特徴とする請求項1又は2に記載のLEDパッケージ。
- 前記光透過型ケースのうちの光取り出し側とは反対側に、前記LEDチップの光を反射する光反射面が前記LEDチップの周囲を取り巻くように形成されていることを特徴とする請求項1乃至3のいずれかに記載のLEDパッケージ。
- 前記光透過型ケースのうちの光取り出し側とは反対側に、放熱性部材が設けられていることを特徴とする請求項1乃至4のいずれかに記載のLEDパッケージ。
- 前記光透過型ケースのうちの光取り出し側とは反対側に、リードフレームが設けられ、
前記LEDチップの電極と前記リードフレームの電極との間がボンディングワイヤで接続されていることを特徴とする請求項1乃至5のいずれかに記載のLEDパッケージ。 - 前記光透過型ケースのうちの光取り出し側とは反対側に、リードフレームが設けられ、
前記LEDチップの電極と前記リードフレームの電極との間の配線経路に存在する凹部又は段差部に、該配線経路が平滑になるように絶縁材が形成され、
前記LEDチップの電極と前記リードフレームの電極との間を接続する配線が導電性インクや塗料の印刷、塗布、転写、導電材料の実装、めっき、気相蒸着のいずれかの方法で形成されていることを特徴とする請求項1乃至5のいずれかに記載のLEDパッケージ。 - 前記配線は、光反射面を兼ねるように面状に形成されていることを特徴とする請求項7に記載のLEDパッケージ。
- 前記光透過型ケースのうちの光取り出し側とは反対側の面に、光反射防止処理が施されていることを特徴とする請求項1乃至8のいずれかに記載のLEDパッケージ。
- 前記光透過型ケースは、放出する光の特性を変化させる蛍光体が混入された材料で形成されていることを特徴とする請求項1乃至9のいずれかに記載のLEDパッケージ。
- 前記光透過型ケースのうちの光取り出し側とは反対側の面に、放出する光の特性を変化させる蛍光体層が形成されていることを特徴とする請求項1乃至9のいずれかに記載のLEDパッケージ。
- LEDパッケージの光取り出し側とは反対側には、前記LEDチップ及びその配線部分を封止する封止材が充填されていることを特徴とする請求項1乃至11のいずれかに記載のLEDパッケージ。
- 一方の面に電極が形成されたLEDチップと、該LEDチップの光を外方に取り出す光透過型ケースとを備えたLEDパッケージの製造方法において、
前記LEDチップの電極が形成された面を前記光透過型ケースとは反対側に向けて該LEDチップを該光透過型ケースに実装する実装工程と、
前記LEDチップの電極と前記光透過型ケースの電極とを接続する配線を設ける配線工程と
を含むことを特徴とするLEDパッケージの製造方法。 - 請求項13に記載の製造方法で製造した1個又は複数個のLEDパッケージの前記LEDチップを回路基板に向けて該LEDパッケージを該回路基板に実装する工程と、
前記LEDパッケージと前記回路基板との間に封止材を充填する工程と
を含むことを特徴とするLEDパッケージの製造方法。
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JP2015126137A (ja) * | 2013-12-26 | 2015-07-06 | アピックヤマダ株式会社 | リードフレーム、ledパッケージ用基板、リフレクタ部材、ledパッケージ、発光装置、発光システム、並びに、ledパッケージ用基板及びledパッケージの製造方法 |
TW201628217A (zh) * | 2015-01-30 | 2016-08-01 | 聯京光電股份有限公司 | 改良之發光二極體封裝結構與方法 |
CN105161436B (zh) * | 2015-09-11 | 2018-05-22 | 柯全 | 倒装芯片的封装方法 |
DE102016100563B4 (de) | 2016-01-14 | 2021-08-05 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Verfahren zum Herstellen einer optoelektronischen Leuchtvorrichtung und optoelektronische Leuchtvorrichtung |
JP6955135B2 (ja) * | 2016-10-19 | 2021-10-27 | 日亜化学工業株式会社 | 発光装置およびその製造方法 |
JP6834469B2 (ja) * | 2016-12-27 | 2021-02-24 | 日亜化学工業株式会社 | 発光装置及びその製造方法 |
KR102468765B1 (ko) | 2017-11-29 | 2022-11-22 | 삼성전자주식회사 | 반도체 패키지 구조체 및 이를 포함하는 반도체 모듈 |
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