JPS6293986A - Manufacture of light emitting device - Google Patents

Manufacture of light emitting device

Info

Publication number
JPS6293986A
JPS6293986A JP60233968A JP23396885A JPS6293986A JP S6293986 A JPS6293986 A JP S6293986A JP 60233968 A JP60233968 A JP 60233968A JP 23396885 A JP23396885 A JP 23396885A JP S6293986 A JPS6293986 A JP S6293986A
Authority
JP
Japan
Prior art keywords
layer
light emitting
electrode
type
semiconductor
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
Application number
JP60233968A
Other languages
Japanese (ja)
Inventor
Kazuaki Takami
高見 一昭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP60233968A priority Critical patent/JPS6293986A/en
Publication of JPS6293986A publication Critical patent/JPS6293986A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L24/00Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
    • H01L24/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L24/42Wire connectors; Manufacturing methods related thereto
    • H01L24/44Structure, shape, material or disposition of the wire connectors prior to the connecting process
    • H01L24/45Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484Connecting portions
    • H01L2224/48463Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/01Chemical elements
    • H01L2924/01015Phosphorus [P]

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Electrodes Of Semiconductors (AREA)
  • Led Device Packages (AREA)
  • Led Devices (AREA)

Abstract

PURPOSE:To eliminate a complicated etching process and obtain light emitting devices which are small in size and arranged in an array easily by a method wherein a light emitting layer formed on a substrate is removed except its center part and one electrode and the other electrode are formed on the center part and the removed part respectively. CONSTITUTION:A semiconductor lower cladding layer 31, a semiconductor active layer 32, an upper cladding layer 33 and a cap layer 34 are successively formed by a epitaxial growth on an N-type buffer layer 30 with a predetermined thickness provided on a semiconductor substrate 29 to form a light emitting layer 35 composed of double-hetero junction layers of the layers 31, 32 and 33. The light emitting layer 35 is removed except its center part and a P-type electrode 41 and an N-type lead electrode 39 are formed on the center part and the removed part respectively. Gold beam leads 45 and 46 are bonded to the exposed parts 42 and 43 of the respective electrodes 39 and 41. With this constitution, a complicated etching process can be eliminated and light emitting devices which are small in size and arranged in an array can be obtained easily.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、pn接合層またはダブルヘテロ接合層から
なる発光層を有する発光ダイオード等の発光素子の製造
方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a light emitting element such as a light emitting diode having a light emitting layer consisting of a pn junction layer or a double heterojunction layer.

〔従来の技術〕[Conventional technology]

一般に、pn接合層またはダブルヘテロ接合、苦からな
る発光層を有する発光素子としての発光ダイオードとし
て、たとえば第2図ないし第4図に示すようなものがあ
り、従来これらの発光ダイオードはそれぞれ次のような
手順で製造さJする。
In general, there are light-emitting diodes as light-emitting elements having a light-emitting layer consisting of a pn junction layer, a double heterojunction layer, or a double heterojunction, as shown in FIGS. 2 to 4. Conventionally, these light-emitting diodes have been It is manufactured using the following procedure.

まず第2図に示す発光ダイオードの場合、1】形Gコx
As括板(1)上に、高不純物ドープのml形(31s
AS層(2)およびp形Oa As層(3)が液相エピ
タキシャル成長され、両GaAs層(2) 、 (3)
のIDI接合層からなる発光層(4)が基板(1)上に
形成され、フォトリングラフィ法および蒸着法により基
板(1)の下面およびGa As層(3)の上面にそれ
ぞれNi −Ge−Au電極(5)およびCr  Z+
i  Au電極(6)が形成されたのち、電極(5)が
固定面として銀ペースト等により固定用ステム等に固定
され、Auリード線(7)がワイヤボンドきれて発光ダ
イオードが製造される。このとき、電極(6)の上方に
透光窓が位置することになる。
First, in the case of the light emitting diode shown in Fig. 2, 1] G type x
Highly impurity-doped ml type (31s
An AS layer (2) and a p-type OaAs layer (3) are grown by liquid phase epitaxial growth, and both GaAs layers (2), (3)
A light emitting layer (4) consisting of an IDI bonding layer is formed on the substrate (1), and Ni-Ge- Au electrode (5) and Cr Z+
After the Au electrode (6) is formed, the electrode (5) is fixed as a fixing surface to a fixing stem using silver paste or the like, and the Au lead wire (7) is wire-bonded to produce a light emitting diode. At this time, the light-transmitting window will be located above the electrode (6).

つぎに第3図に示す発光ダイオードの場合、図示されて
いないn形G11As ’&根板上、[l形A464G
a、6As 層(8)およびp形A16.2 Ga 6
.B A s層(9)が液相エピタキシャル成長され、
ざらにAlo、zGao、sAS Ji’N(9)上に
[)形A4o5 Ga 6.g5 Ass層O、n形A
ff o2Gao8As層qυおよびキャップ層として
のn形GaAs ZQ21が液相エピタキシャル成長さ
れ、kl!6.650no、g5AS 層QOおよび”
’0.2Ga0.aAs層αυのpn接合層からなる発
光層03が前記基板上に形成さり1、発光層α]の中央
部以外をp形にするために、Znが拡散されてZn拡散
層α(4)が形成され、フオI・リソグラフィ法、 C
VD法および蒸着法によりS i02膜09が形成され
るとともに、Z11拡散層qa上および(3aAs I
WQ2上にそれぞれOr −Zn −A u i 極Q
eおよびN1−Gc−Au電極07)が形成されたのち
、フォトリソグラフィ法およびエツチング技術によりm
J記基板が除去されるとともに、Affo40ao6A
s層(8)が半球ドーム状にエツチングされ、はんだに
より予め電極パターンが形成されたSiからなるサブマ
ウントに両電極ae 、 Q7)を溶着部として溶着さ
れ、その後Auリード線がワイヤボンドされて発光ダイ
オードが製造される。
Next, in the case of the light emitting diode shown in FIG.
a, 6As layer (8) and p-type A16.2 Ga 6
.. A B A s layer (9) is liquid phase epitaxially grown;
Roughly Alo, zGao, sAS Ji'N (9) [) form A4o5 Ga 6. g5 Ass layer O, n-type A
ff o2Gao8As layer qυ and n-type GaAs ZQ21 as a cap layer are grown by liquid phase epitaxial growth, and kl! 6.650no, g5AS layer QO and”
'0.2Ga0. A light-emitting layer 03 consisting of a pn junction layer of an aAs layer αυ is formed on the substrate 1, and in order to make the light-emitting layer α other than the central part p-type, Zn is diffused to form a Zn diffusion layer α(4). Formed by photolithography method, C
The Si02 film 09 is formed by the VD method and the vapor deposition method, and the Si02 film 09 is formed on the Z11 diffusion layer qa and on the (3aAs I
Or −Zn −A u i pole Q on WQ2 respectively
After forming the N1-Gc-Au electrodes 07), m is etched using photolithography and etching techniques.
As the J substrate is removed, Affo40ao6A
The S layer (8) is etched into a hemispherical dome shape, and is welded to a submount made of Si on which an electrode pattern has been previously formed with solder, with both electrodes ae and Q7) as welding parts, and then an Au lead wire is wire-bonded. A light emitting diode is manufactured.

このとき、半球ドーム状のAlo4Gao6As層(8
)の下方に透光窓が位置することになる。
At this time, a hemispherical dome-shaped Alo4Gao6As layer (8
) The translucent window will be located below.

また第412Hで示す発足ダイオードの場合、【)形0
aAs基板Q8)−、I=、に、下部クラッド層として
のn形A”0.330no、67AS %W(+9 、
活性層としてのI)形Aloo、Gコ10.95 As
 ’d en 。
In addition, in the case of the starting diode indicated by No. 412H, [) type 0
n-type A"0.330no,67AS%W(+9,
I) type Aloo, Gco10.95 As as active layer
'den.

上部クラッド層としてのl)形A6o33aao、67
 As El (211およびギャップ層としてのp形
Ga A s層C2が11[ロ次τ夜t’lエピタキン
ヤル成長され、下部クラッド層、活性層。
l) type A6o33aao, 67 as upper cladding layer
As El (211) and a p-type GaAs layer C2 as a gap layer are epitaxially grown in the 11th order of t'l, the lower cladding layer and the active layer.

上部クラッド層としての各層(1!l −t211のダ
ブルへゾロ接合層からなる発光層のが基板08)上に形
成さハ、フオl−リングラフィ法およびCV i)法に
より、(3a A S層に上に電流ブロック用の5i0
21う九が形成されるとともに、5102膜(24+の
中火部に、透孔Q、5)が形成され、蒸着法により、S
 i02膜C!旬上および透孔(251内にCr−Zr
h −Au電極■が形成される七ともに、駁扱a8)の
下面にNi −Gc−Au電極罰が形成さf15、その
後フォトリソグラフィ法およびエツチング技4!jによ
り、基板08)の中央部の透孔のの下方に、下面側から
A(!oa:5Ga0.67AS層Ogjに達する透孔
(至)が形成され、電極126+が固定面として固定用
ステ八等に固定さね、て発光ダイオードが製造される。
Each layer as an upper cladding layer (the light-emitting layer consisting of a 1!l-t211 double dielectric junction layer is the substrate 08) is formed on the substrate 08. 5i0 for current block on top of layer
At the same time, a 5102 film (through hole Q, 5 in the medium heat part of 24+) is formed, and S
i02 membrane C! Cr-Zr on top and through hole (251 inside)
h-Au electrode (7) is formed, Ni-Gc-Au electrode (f15) is formed on the lower surface of a8), and then photolithography and etching techniques are applied (4)! j, a through hole reaching A (!oa:5Ga0.67AS layer Ogj) from the lower surface side is formed below the through hole in the center of the substrate 08), and the electrode 126+ is used as a fixing surface for the fixing step. A light emitting diode is manufactured by fixing it to the 8th grade.

このとき、基板a場の下方に透光窓が位置することにな
る。
At this time, the light-transmitting window is located below the substrate field a.

また、透孔のをエツチングにより形成した場合、サイド
エツチングにより透孔■の断面形状は第4図のように台
形状になる。
Further, when the through hole is formed by etching, the cross-sectional shape of the through hole (2) becomes trapezoidal as shown in FIG. 4 due to side etching.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところが第2図に示す発光ダイオードの場合、発光層(
4)における電流通路部の面積を有するため、電極(2
)の上方の前記透光窓を介して当該発光ダイオードを見
ると、発光層(4)が広がりを持った面で発光して光が
発散することになり、表示素子として用いるには有利で
ある反面1点光源としては不適当であるという問題点が
ある。
However, in the case of the light emitting diode shown in Fig. 2, the light emitting layer (
Since it has the area of the current path part in 4), the electrode (2)
) When looking at the light emitting diode through the transparent window above the light emitting layer (4), the light emitting layer (4) emits light from a wide surface and the light is diffused, which is advantageous for use as a display element. On the other hand, there is a problem that it is unsuitable as a single point light source.

一方第3図に示す発光ダイオードの場合、発光層α埠の
中央部のみを残した構造であり、しかも電極aηの面積
が小さくなって発光層03における電流通路部の面積が
前記第2図の場合よりも大幅に小さくなるため、発光層
0ニヤの発光領域が微小点に近似され、発光層α■から
の光が半球ドーム状のAeo4Ga、)、6As 9(
8)により発散することが抑えられることになり、点光
源として用いるには打刊であるが、kl g、4 Ga
 o6 As I、’J (8)を半球ドーム状にエツ
チングすることが非常に困難であり、製造を容易に行な
うことができないきいう問題点がある。
On the other hand, in the case of the light emitting diode shown in FIG. 3, the structure is such that only the central part of the light emitting layer α is left, and the area of the electrode aη is reduced, so that the area of the current passage portion in the light emitting layer 03 is smaller than that of FIG. Because it is much smaller than in the case of Aeo4Ga, ), 6As 9(
8) will suppress the divergence, and it is necessary to use it as a point light source, but kl g, 4 Ga
There is a problem in that it is very difficult to etch o6 As I,'J (8) into a hemispherical dome shape, making it difficult to manufacture it easily.

また第4図に示す発光ダイオードの場合、5I02膜例
の中央部の透孔Q内の電極(イ)を介し2て発光層(ハ
)に集中的に電流を通流させることができるため、前記
第3図の場合と同様に発光層!23)の発光領域が微小
点に近似され、基板0樟の下刃の前記透光窓および透孔
(至)を介して発光層のからの光が児えることになり、
点光源さして用いるには佇利である反面、透孔呟、(至
)を精度よく位置合わせし−C形成することが非常に困
難であり、やはり製造が容易ではないという問題点があ
る。
In addition, in the case of the light emitting diode shown in FIG. 4, current can be intensively passed through the light emitting layer (c) through the electrode (a) in the through hole Q in the center of the 5I02 film example. As in the case of Fig. 3 above, the light emitting layer! 23) The light-emitting region is approximated to a minute point, and light from the light-emitting layer is generated through the light-transmitting window and the through-hole of the lower blade of the substrate.
Although it is convenient to use as a point light source, it is very difficult to precisely align the through holes to form a -C, and there is a problem that it is not easy to manufacture.

でらに、前記第2図ないし2第4図の発光ダイオードに
共通する問題点として、非常に大型になり、しかも同種
の発光ダイオードを複数個配列してアレイ化するのが困
難な点である。
Furthermore, a common problem with the light emitting diodes shown in FIGS. 2 to 4 is that they are extremely large, and it is difficult to arrange multiple light emitting diodes of the same type into an array. .

そこでこの発明は、小型化がiiJ能な発光素子を容易
に製j告できるようにし、しかもアレイ化が容易な発光
素子を提供することを技術的課題とする。
SUMMARY OF THE INVENTION Therefore, the technical object of the present invention is to provide a light emitting element that can be easily manufactured in a small size and that can be easily formed into an array.

なお、ダブルヘテロ構造の発光素子をアレイ化したもの
として、特公昭59−10597号公報に記載の半導体
レーザアレイがあるが、これは1つの基板上に凹陥溝を
介して複数個の半導体アレイを形成するものであり、当
初よりアレイ化を目的とした114浩のものであり、こ
の発明の技術的課題と性質を異にする。
Note that there is a semiconductor laser array described in Japanese Patent Publication No. 59-10597 as an array of double heterostructure light emitting elements, but this is a semiconductor laser array in which a plurality of semiconductor arrays are arranged on one substrate via recessed grooves. This is a 114-hiro object that was originally intended for array formation, and its nature is different from the technical problem of the present invention.

〔問題点を解決するだめの手段〕[Failure to solve the problem]

この発明は、前記の点に留意してなをれたものであり、
半導体基板上にp形層、 II形層からなるpn接合臂
、まだは半導体下部タララド層、半導体活性層、半導体
上部クラッド層からなるダブルヘテロ接合層により構成
される発光層を形成し、前記発光層の中央部以外の部分
を除去し、前記中央部および除去された除去部分にそれ
ぞれ一方および他方の電極を形成し、前記両電極上にそ
れぞれ露出部を残して絶縁−を形成し、前記露出部にそ
れぞれ電気的に接続した2個のビームリードを形成し、
前記基板を除去することを特徴とする発光′(子の製造
方法である。
This invention was developed with the above points in mind,
A light emitting layer is formed on a semiconductor substrate, which is composed of a pn junction arm consisting of a p-type layer and a type II layer, and a double heterojunction layer consisting of a lower semiconductor TARRADO layer, a semiconductor active layer, and an upper semiconductor cladding layer. A portion of the layer other than the central portion is removed, one electrode and the other electrode are formed in the central portion and the removed portion, respectively, and an insulating layer is formed by leaving an exposed portion on both electrodes, and the exposed portion is removed. Two beam leads are formed, each electrically connected to the
A method of manufacturing a light emitting device is characterized in that the substrate is removed.

〔作 用〕[For production]

しだがって、この発明では、半導体基板上にpn接合層
またはダブルヘテロ接合層からなる発光層が形成され、
発光層の中央部以外の部分が除去され、発光層の中央部
および除去された除去部分にそれぞれ一方、他方の電極
が形成され、両?[K上れぞれ″、■気的に接続されて
形成され、半導体基板が除去さねて発光素子の製造が行
なわれる。
Therefore, in the present invention, a light emitting layer consisting of a pn junction layer or a double heterojunction layer is formed on a semiconductor substrate,
Portions other than the central portion of the light emitting layer are removed, and one electrode and the other electrode are formed in the central portion of the light emitting layer and the removed portion, respectively. [K] are formed by being electrically connected, and the light emitting device is manufactured without removing the semiconductor substrate.

このとき、発光層の中央部以外を除去するため、当該除
去部分に他方の電極を形成するに十分な面積が確保され
れば、不要部分を削除することが可能となり、素子の小
型化を図れるとともに、発光領域が小さくなって点光源
として用いる場合に有利となる。
At this time, parts other than the central part of the light emitting layer are removed, so if a sufficient area is secured in the removed part to form the other electrode, unnecessary parts can be removed and the device can be made smaller. At the same time, the light emitting area becomes smaller, which is advantageous when used as a point light source.

でらに、畏くて強固なビームリードを形成するため、ケ
ースやステムへの装着およびアレイ化が容易となる。
Furthermore, it forms a very strong beam lead, making it easy to attach to a case or stem and to form an array.

〔実施例〕〔Example〕

つぎに、この発明を、その1実施例を示しだ第1図とと
もに詳細に説明する。
Next, the present invention will be explained in detail with reference to FIG. 1 showing one embodiment thereof.

まず第1図(21)に示すように、(100)面の鏡面
研磨されたGaAsからなる半導体基板の上に、 II
形A”0.3Ga o、7kSからなる厚さ50膜皿の
バッファ層■、n形Al?0.250a 0.751S
からなる厚さl Q 1m+の半導体下部クラッド層O
υ、n形AI:!o、o5Ga 0.95ASからなる
厚さ0.5 μ111の半導体活性/15tsZ、p形
A10,25 Ga 、)、75 Asからなる厚さ2
μmの半導体上部クラッドII f33+およびp形G
aAsからなる厚さ0.5μ等のキャップ層134)を
順次液相エピタキシャル成長させ、下部クラッド層G1
)、活性層I3’2 、上部クラッド8133)のダブ
ルヘテロ接合層からなる発光層13F;Iを基板の上に
形成する。
First, as shown in FIG. 1 (21), on a semiconductor substrate made of mirror-polished GaAs with a (100) plane,
Buffer layer of type A"0.3Ga o, 7kS with a thickness of 50 membranes ■, n-type Al?0.250a 0.751S
A semiconductor lower cladding layer O with a thickness l Q 1m+ consisting of
υ, n-type AI:! o, o5Ga 0.95AS Semiconductor active with a thickness of 0.5μ111/15tsZ, p-type A10,25Ga,), thickness 2 made of 75As
μm semiconductor upper cladding II f33+ and p-type G
A cap layer 134) made of aAs having a thickness of 0.5 μm is sequentially grown by liquid phase epitaxial growth, and the lower cladding layer G1
), an active layer I3'2, and an upper cladding 8133), a light emitting layer 13F;I consisting of a double heterojunction layer is formed on the substrate.

このとき、各層■〜041の不純物濃度はそれぞれ、約
5 X IQ16c7n−3,約I X 1918m 
a、 、約5xlQ17z’、約0.7 X 1017
m罰、約2×10180−3とする。
At this time, the impurity concentration of each layer ① to 041 is approximately 5 × IQ16c7n-3, approximately I × 1918m, respectively.
a, , about 5xlQ17z', about 0.7 x 1017
m penalty, approximately 2×10180−3.

つぎに、H3I’04 : H2O2: CHaOH=
3 : 1 : lの混合比の混合液をエッチャントと
し、該エッチャントを30°Cに維持しつつ、第1図(
+))に示すように、キャップ’4 i34!および発
光層!351の中央部以外の部分を、下部クラッド層e
ll)の表庖に達するまで深さ約31μ口1にわたって
ドーナツ状にエツチングして除去し、その後CVD法に
より下部クラッド層Oυ上およびキャップFIJ +3
41上に5I02膜(至)を形成し、レジスト膜!37
)を用いたフォトリソグラフィ法により、発光層tJ5
1の除去された部分の下部クラッド層OI)が露出する
ように8 + 02膜(至)をNH3F −HF −I
hO系のエッチャントを用いてエツチングし、同図((
−)に示すように、下部クラッド層OI)のmI記露出
部にNi −Gc−Au膜を蒸着し、450°Cに加熱
して合金化し、リフトオフによる11形K [!381
を形成し、さらに金めつき法によりAuをn彫型11i
 +381上に約3. l 1膜m形成して他方の電極
としてのn形す−ド電極(39)を形成したのち、レジ
スト膜間を除去してS i 02膜(ト)上およびリー
ド電極39)上に新たにレジスト膜(1i)を形成し、
フォトリングラフィ法により、キャップFJ 134)
が露出するようにS−yツブ層賄)上のS i02膜(
至)をNIIa F −IF −H2O系エッチャント
を用いてエツチングする。
Next, H3I'04: H2O2: CHaOH=
A mixed solution having a mixing ratio of 3:1:1 was used as an etchant, and while the etchant was maintained at 30°C, the mixture as shown in Fig. 1 (
+)) As shown in Cap'4 i34! And a luminescent layer! 351 other than the central part, the lower cladding layer e
ll) is removed by etching in a donut shape over a depth of about 31 μm until reaching the surface of ll), and then removed by CVD on the lower cladding layer Oυ and on the cap FIJ +3
A 5I02 film (to) is formed on 41, and a resist film is formed! 37
) by the photolithography method using the light emitting layer tJ5
The 8 + 02 film (towards) is diluted with NH3F -HF -I so that the lower cladding layer (OI) of the removed portion of 1 is exposed.
The same figure ((
-), a Ni-Gc-Au film is deposited on the mI exposed portion of the lower cladding layer OI), heated to 450°C to form an alloy, and formed into a type 11 K [!] by lift-off. 381
11i by gold plating method.
Approximately 3. above +381. After forming an n-type lead electrode (39) as the other electrode by forming one film m, the space between the resist films is removed and a new layer is formed on the Si02 film (g) and the lead electrode 39). forming a resist film (1i);
Cap FJ 134) by photolithography method
Si02 film (
) is etched using a NIIa F-IF-H2O etchant.

さらに、キャップ層(34)の前記露出部にCr−Zr
1− Au膜を蒸着し、450°Cに加熱して合金化し
、第1図(d)に示すようにリフトオフによる一方の?
tEiとしてのp彫型1(41)を形成したのち、レジ
スト膜(401を除去し、同図(e)に示すように、両
電極(39) 、 1411上にそれぞれ露出部+42
) 、 1431を残して絶縁用のポリイミド溶液を5
μI’n塗布して200〜300 ’Cの温度で約1時
間ベーギングし、絶縁層としてのポリイミド層+44+
を形成し、その後フ第1・リソグラフィ法により、Cr
−Auからなる所定のビームリードパターンを形成し、
同図げ)に示すように、金めつき法により、ポリイミド
層(44)に厚さ5 pn+の2個の金ビームリード(
4が、 (4[5)を露出部(421、(43jそれぞ
れ電気的に接続して形成する。
Furthermore, Cr-Zr is applied to the exposed portion of the cap layer (34).
1- Deposit an Au film, heat it to 450°C to alloy it, and lift off one side as shown in Figure 1(d).
After forming the p-shaped mold 1 (41) as tEi, the resist film (401) is removed, and as shown in FIG.
), leaving 1431 and adding polyimide solution for insulation to 5
Apply μI'n and bake for about 1 hour at a temperature of 200-300'C, then add a polyimide layer +44+ as an insulating layer.
Cr is formed, and then Cr is formed by a first lithography method.
- forming a predetermined beam lead pattern made of Au;
As shown in the same figure, two gold beam leads (with a thickness of 5 pn+) are attached to the polyimide layer (44) by gold plating.
4 is formed by electrically connecting (4[5) to the exposed parts (421 and (43j), respectively).

つぎに、ビームリード!451. +461の形成後、
HCI。
Next, beam lead! 451. After the formation of +461,
H.C.I.

NHaI −I2 系エッチャントにより余分なレジス
トやCr−Auのマスクパターン等を除去し、NH40
EI:H20= 10 : 1  の混合比の混合液を
エッチャントとし、該エッチャントを30℃に維持しつ
つ、第1図(g)に示すように、基板のをエツチングし
て基板器の吸収による光の減衰を防1トし、さらにフ第
1−リングラフィ法により、酒石酸: H2O2: H
zO= 1 : 1 : 1の混合比の混合τ夜を50
°Cに維持しつつ、バッファ層■を末広がりに、メサエ
ッチングして発光ダイオードの製造工程が終了する。
Excess resist and Cr-Au mask pattern are removed using NHaI-I2 etchant, and NH40
A mixed solution with a mixing ratio of EI:H20=10:1 is used as an etchant, and while the etchant is maintained at 30°C, the substrate is etched as shown in FIG. Tartaric acid: H2O2: H
Mixing ratio of zO = 1: 1: 1 is 50
While maintaining the temperature at .degree. C., the buffer layer (1) is mesa-etched to widen toward the end, thereby completing the manufacturing process of the light emitting diode.

このとき、製造された発光ダイオードのベレットは1辺
が200〜22011Inの角形で、発光IJO5)、
7)径urJ30μ川、バッファ層Q!J+の、メサエ
ッチング??eli約40〜5011In となり、ビ
ームリード145) 、 +46)の長さは約7501
1[nとなった。
At this time, the pellet of the manufactured light emitting diode has a square shape with one side of 200 to 22011 In, and the light emitting IJO5),
7) Diameter urJ30μ, buffer layer Q! J+'s mesa etching? ? eli is approximately 40 to 5011In, and the length of the beam lead 145), +46) is approximately 7501In.
It became 1[n.

なお、第1図(g)においてバッファ5腎ω)の下方に
光透過用の透光窓が位置することになる。
In addition, in FIG. 1(g), a light-transmitting window for transmitting light is located below the buffer 5 (renal ω).

そして、発光層3ωの中央部以外を除去したため、除去
された前記除去部分にn形’il! 啄・’、38) 
、 !1形リード電極軸を形成するに十分な面積を確保
すれば、不要部分を削除することが可能となり、発光ダ
イオードの小型化を図ることが1■能となると同時に、
発光層秀の径が小さくなって発光層(:3ωの発光領域
が微小点に近似され、当該2 ’r1′4ダイオードを
点光源として用いることが可能となる。
Since the portion other than the central portion of the light-emitting layer 3ω was removed, n-type 'il! Taku・', 38)
, ! By securing a sufficient area to form a type 1 lead electrode shaft, unnecessary parts can be removed, making it possible to miniaturize the light emitting diode.
The diameter of the light-emitting layer becomes smaller, and the light-emitting region of the light-emitting layer (3ω) is approximated to a minute point, making it possible to use the 2'r1'4 diode as a point light source.

さらに、ビームリード(415) 、 +46)を設け
たため、従来のような銀ペーストによるマウントや、は
んだ;による電極の〆着などを行なう必要がなく、ケー
スやステムへの装着等が非常に容易になり、しかもビー
ムリード145) 、 +46)がワイヤと異なり侵<
シかも強固であるため、アレイ化を容易に図ることがで
き、応用性の拡大が図れることになる。
Furthermore, since the beam leads (415) and +46) are provided, there is no need to mount with silver paste or close the electrodes with solder as in the conventional case, making it extremely easy to attach to the case or stem. Moreover, the beam leads 145), +46) are less erodible than wires.
Since the structure is strong, it can be easily formed into an array, and its applicability can be expanded.

なお、前記実施例では発光ダイオードに適用した場合に
ついて説明したが、発光ダイオードに限るものでないこ
とは勿論である。
In addition, although the said Example demonstrated the case where it applied to a light emitting diode, it is needless to say that it is not limited to a light emitting diode.

〔発明の効果〕〔Effect of the invention〕

以上のように、この発明の発光素子の製造方法によると
、発光素子の小型化を図ることが可能となり、複雑なエ
ツチング等の工程もなく、小型でかつアレイ化が容易な
発光素子を簡単な工程にょυ容易に製造することができ
、応用性の拡大を図ることが可能となる。
As described above, according to the method for manufacturing a light emitting element of the present invention, it is possible to reduce the size of the light emitting element, and there is no need for complicated processes such as etching. The process can be easily manufactured and the applicability can be expanded.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(a)ないしくg)はこの発明の発光素子の製造
方法の1実施例の製造工程を示す切断正面図、第2図な
いし第4図はそJl−それ従来の発光素子の切断正面図
である。 ■・・・半導体基板、0υ・・・丁部タラツド留、13
ざ・・・活性層5い3)・・・上部クラッド層、135
1・・・発光、胃、(3gj・・・ll形リード電極、
けl)・・・P形電極、(4渇9(4J・・・露出部、
(44)・・・ポリイミド層、(4(ト)、 +46)
・・・金ビームリード。 代理人 弁理士  藤〔l龍人部 第1図 第1図 第1刃
Figures 1 (a) to g) are cutaway front views showing the manufacturing process of one embodiment of the method for manufacturing a light emitting element of the present invention, and Figures 2 to 4 are cutaway views of a conventional light emitting element. It is a front view. ■...Semiconductor substrate, 0υ...Taratsudo clamp, 13
Z...Active layer 53)...Upper cladding layer, 135
1... Luminescence, stomach, (3gj...ll type lead electrode,
(4J)...P-type electrode, (4J9(4J...Exposed part,
(44)...Polyimide layer, (4(g), +46)
...Gold beam lead. Agent Patent Attorney Fuji [lRyujin Department Figure 1 Figure 1 Figure 1 Blade

Claims (1)

【特許請求の範囲】[Claims] (1)半導体基板上にp形層、n形層からなるpn接合
層、または半導体下部クラッド層、半導体活性層、半導
体上部クラッド層からなるダブルヘテロ接合層により構
成される発光層を形成し、前記発光層の中央部以外の部
分を除去し、前記中央部および除去された除去部分にそ
れぞれ一方および他方の電極を形成し、前記両電極上に
それぞれ露出部を残して絶縁層を形成し、前記露出部に
それぞれ電気的に接続した2個のビームリードを形成し
、前記基板を除去することを特徴とする発光素子の製造
方法。
(1) Forming on a semiconductor substrate a pn junction layer consisting of a p-type layer and an n-type layer, or a light emitting layer consisting of a double heterojunction layer consisting of a semiconductor lower cladding layer, a semiconductor active layer, and a semiconductor upper cladding layer, removing a portion other than the central portion of the light emitting layer, forming one and the other electrodes on the central portion and the removed portion, respectively, leaving exposed portions on both electrodes to form an insulating layer; A method for manufacturing a light emitting device, comprising forming two beam leads electrically connected to each of the exposed portions, and removing the substrate.
JP60233968A 1985-10-19 1985-10-19 Manufacture of light emitting device Pending JPS6293986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60233968A JPS6293986A (en) 1985-10-19 1985-10-19 Manufacture of light emitting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60233968A JPS6293986A (en) 1985-10-19 1985-10-19 Manufacture of light emitting device

Publications (1)

Publication Number Publication Date
JPS6293986A true JPS6293986A (en) 1987-04-30

Family

ID=16963457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60233968A Pending JPS6293986A (en) 1985-10-19 1985-10-19 Manufacture of light emitting device

Country Status (1)

Country Link
JP (1) JPS6293986A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002073706A1 (en) 2001-03-09 2002-09-19 Sony Corporation Display apparatus and its manufacturing method
JP2005228924A (en) * 2004-02-13 2005-08-25 Toshiba Corp Semiconductor light emitting element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544232A (en) * 1977-06-11 1979-01-12 Nippon Musical Instruments Mfg Material for die cast plunger chip

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544232A (en) * 1977-06-11 1979-01-12 Nippon Musical Instruments Mfg Material for die cast plunger chip

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002073706A1 (en) 2001-03-09 2002-09-19 Sony Corporation Display apparatus and its manufacturing method
EP1367654A1 (en) * 2001-03-09 2003-12-03 Sony Corporation Display apparatus and its manufacturing method
EP1367654A4 (en) * 2001-03-09 2007-04-18 Sony Corp Display apparatus and its manufacturing method
KR100860102B1 (en) * 2001-03-09 2008-09-25 소니 가부시키가이샤 Display apparatus and its manufacturing method
JP2005228924A (en) * 2004-02-13 2005-08-25 Toshiba Corp Semiconductor light emitting element

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