JPS5935005Y2 - light emitting diode display - Google Patents
light emitting diode displayInfo
- Publication number
- JPS5935005Y2 JPS5935005Y2 JP1979132913U JP13291379U JPS5935005Y2 JP S5935005 Y2 JPS5935005 Y2 JP S5935005Y2 JP 1979132913 U JP1979132913 U JP 1979132913U JP 13291379 U JP13291379 U JP 13291379U JP S5935005 Y2 JPS5935005 Y2 JP S5935005Y2
- Authority
- JP
- Japan
- Prior art keywords
- emitting diode
- light emitting
- light
- recess
- shape
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W72/00—Interconnections or connectors in packages
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
- H10W90/00—Package configurations
- H10W90/701—Package configurations characterised by the relative positions of pads or connectors relative to package parts
- H10W90/751—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires
- H10W90/756—Package configurations characterised by the relative positions of pads or connectors relative to package parts of bond wires between a chip and a stacked lead frame, conducting package substrate or heat sink
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【考案の詳細な説明】
本案は製造しやすぐ表示の形が整った発光ダイオード表
示器に関するものである。[Detailed Description of the Invention] The present invention relates to a light-emitting diode display device that can be ready for display immediately after being manufactured.
従来、第１図に示すような金属製のリードフレーム１に
凹部２，２・・・を設け、その中に発光ダイオード３，
３・・・を固着し、金属細線４，４・・・等の配線手段
によってリード舌片５，５・・・に配線し、透孔性樹脂
６で少なくとも発光ダイオード３，３・・・を覆い、外
形を整えた発光ダイオード表示器に釦いて、凹部２，２
・・・の形状は発光ダイオード３゜３の形状にあわせた
四角形か又は円形としていた。Conventionally, a metal lead frame 1 as shown in FIG. 1 is provided with recesses 2, 2, .
3... are fixed and wired to the lead tongues 5, 5... by wiring means such as thin metal wires 4, 4..., and at least the light emitting diodes 3, 3... are connected with the permeable resin 6. Cover the light-emitting diode display with its outer shape adjusted, and press the recess 2, 2.
The shape of .
ところが第２図に示すように、開口面が同角形（同図ｂ
）をなすと、発光ダイオードは側面又は平面からの光放
射量が稜からの光放射量より極端に多いので、同図Ｃの
ように発光の様子が歪み形状となって観察される。However, as shown in Figure 2, the opening planes are isogonal (b
), the amount of light emitted from the side surface or plane of the light emitting diode is extremely greater than the amount of light emitted from the ridge, so that the light emitted by the light emitting diode is observed to have a distorted shape as shown in C of the same figure.
又凹部２は概ねエツチング等の化学蝕刻法によって深さ
５０〜５００μｍとするものであるが、深い凹部を形成
しようとすると壁面がくりぬかれる（同図ａ）ので、発
光ダイオードの取付作業中に周縁の突出部γ、７が発光
ダイオードに当接しやすく、発光に寄与しない洩れ電流
路を形成する歪が発光ダイオードに生じ不都合である。In addition, the recess 2 is generally made to have a depth of 50 to 500 μm by chemical etching such as etching, but when attempting to form a deep recess, the wall surface is hollowed out (a in the same figure), so the periphery is removed during the installation work of the light emitting diode. The protrusions γ, 7 tend to come into contact with the light emitting diode, causing distortion in the light emitting diode that forms a leakage current path that does not contribute to light emission, which is inconvenient.
又浅い凹部を形成しようとすると底面が凹凸となり発光
ダイオードの固定が不安定となる。Furthermore, if a shallow recess is attempted to be formed, the bottom surface will become uneven, making it unstable to fix the light emitting diode.
一方、第３図に示すように開口面を円形（同図ｂ）とす
ると、発光のようすは同図Ｃのように略円形となって好
ましい（第２図〜第４図のＣＶｃ釦いて、実際には透明
樹脂によって光が散乱するので、図のように明確な輪郭
は得られない。On the other hand, if the aperture surface is circular as shown in Fig. 3 (b in the same figure), the light emission will be approximately circular as shown in C in the same figure, which is preferable (CVc button in Figs. In reality, light is scattered by the transparent resin, so it is not possible to obtain a clear outline as shown in the figure.
従って第３図Ｃは円形とみなし得る）が、凹部の断面形
状は同図ａの如く湾曲した形となって蝕刻されるので、
発光ダイオード３を水平に保って固着するのが困難とな
り、はとんどの場合、図のように傾いて固着される。Therefore, Figure 3C can be regarded as circular), but since the cross-sectional shape of the recess is etched into a curved shape as shown in Figure 3A,
It becomes difficult to keep the light emitting diode 3 horizontal and fix it, and in most cases it is fixed tilted as shown in the figure.
このため同図Ｃのようには光が拡がらないし又金属細線
４の取付（ワイヤボンド）も極めて困難となる。For this reason, the light does not spread as shown in Figure C, and attachment of the thin metal wire 4 (wire bonding) becomes extremely difficult.
本案はこのような欠点をなくするために行なわれたもの
で、化学蝕刻の特性を巧みに利用したもので、以下本案
を実施例に基づいて詳細に説明する。The present invention has been developed in order to eliminate such drawbacks and skillfully utilizes the characteristics of chemical etching.The present invention will be described in detail below based on examples.
第４図は本案実施例に釦いて凹部の様子を示すもので、
同図すは開口部の平面図である。Figure 4 shows the state of the recessed part in the embodiment of the present invention.
The figure is a plan view of the opening.
これは−辺０．６ｍｍの正方形８の角部に、正方形８の
頂角を中心とする半径ｏ、１ｍｍ０恥円９，９・・・配
置した形状となっている。This has a shape in which a circle 9,9... is placed at a corner of a square 8 with a side of 0.6 mm, with a radius o centering on the apex angle of the square 8, and a radius o of 1 mm.
このＶ４円９，９・・・のために第２図ａのような突出
部７，７を生じる事なく、第４ａに示すように底面も平
坦な深さ２５０μｍの凹部２が形成出来た。Because of these V4 circles 9, 9, . . . , a recess 2 with a depth of 250 μm and a flat bottom surface could be formed as shown in FIG. 4a without producing the protrusions 7, 7 as shown in FIG. 2a.
この深さは５０μｍから５００μｍで底面が平坦であっ
たがより深くするとやはり傾斜面部が生じるので、その
場合は正方形を大きくするとよい。This depth was from 50 μm to 500 μm, and the bottom surface was flat, but if it were made deeper, an inclined surface portion would still appear, so in that case, it is better to make the square larger.
さらにこのＶ４円９，９・・・は光溜め部となるため、
発光ダイオード点灯にあっては同図Ｃに示すような略四
角形の輪郭が得られた。Furthermore, this V4 circle 9, 9... becomes a light reservoir, so
When the light emitting diode was lit, a substantially rectangular outline as shown in C in the figure was obtained.
上述の実施例に卦いて、凹部２の底面をより平坦にする
には７４円９，９・・・と正方形８との接続点をなめら
かな曲線とするように正方形８の各辺を弓状に湾曲させ
るとよい。In addition to the above embodiment, in order to make the bottom surface of the recess 2 flatter, each side of the square 8 is shaped into an arcuate shape so that the connection points between the 74 circles 9, 9... and the square 8 form a smooth curve. It is best to curve it.
又、正方形８の面積が大きい場合には７４円９，９・・
・の中心は正方形８の正方形８の頂角より内側の方がよ
い。Also, if the area of square 8 is large, 74 yen 9,9...
It is better for the center of ・ to be inside the apex angle of square 8.
尚、本案の適用できるリードフレーム１は化学蝕刻でき
る材料、即ち、銅、燐青銅、錫銅、鉄、アルミニウム等
であるが、リードフレームの形状をなさない。The lead frame 1 to which the present invention can be applied is made of a material that can be chemically etched, such as copper, phosphor bronze, tin copper, iron, aluminum, etc., but does not have the shape of a lead frame.
例えば遮光枠や放射板等の個別部品に釦いても、発光ダ
イオードを載せる目的のものであれば適用できる。For example, the button can be applied to individual parts such as a light-shielding frame or a radiation plate, as long as the purpose is to mount a light-emitting diode.
上述の実施例では、発光ダイオードの発光状態を直視す
る型の表示器であったため、凹部の基となる形状が発光
ダイオードの形状と一致した正方形であったが、たとえ
ば反射枠や光導管を用いる表示器の場合、発光ダイオー
ドの光は長方形であったり三角形（指向形）であったり
する方が好ましい場合がある。In the above-mentioned embodiment, since the display device was of a type in which the light emitting state of the light emitting diode was directly viewed, the base shape of the recess was a square that matched the shape of the light emitting diode. In the case of a display, it may be preferable for the light of the light emitting diode to be rectangular or triangular (directional).
この場合に本案を適用するには所望多角形の角部に、上
記実施例の如く円の一部を組み合わせ、好ましくはなめ
らかな曲線で包絡し、用いればよい。In order to apply the present invention in this case, it is sufficient to combine a part of a circle with the corner of the desired polygon as in the above embodiment, preferably to enclose it with a smooth curve.
もちろんこの場合には透光性樹脂で外形を整える必要は
ないが、光の拡がシをより効果的にするため、又発光ダ
イオードの表面安定化のためにも、少なくとも発光ダイ
オードはシリコン樹脂等の透光性樹脂の薄膜で覆って２
− ＜のがよい。Of course, in this case, it is not necessary to prepare the outer shape with translucent resin, but in order to make the light spread more effective and to stabilize the surface of the light emitting diode, at least the light emitting diode should be made of silicone resin, etc. Covered with a thin film of translucent resin 2
− < is better.
以上の如く本案は凹部を有する金属製基板と、凹部の中
に固着された発光ダイオードと、発光ダイオードに配線
を施こす手段と、少なくとも発光ダイオードを覆う透光
性樹脂とを具備した発光ダイオード表示器にかいて、前
記凹部は開口端の形状が多角形の角部を円の一部で構成
した形状となっているものであるから、凹部底面が平坦
となるので発光ダイオードの取付作業性が向」二し、発
光状態も歪とならない。As described above, the present invention is a light emitting diode display comprising a metal substrate having a recess, a light emitting diode fixed in the recess, means for wiring the light emitting diode, and a transparent resin covering at least the light emitting diode. In general, the opening end of the recess has a polygonal corner formed by a part of a circle, so the bottom surface of the recess is flat, making it easier to install the light emitting diode. In addition, the light emitting state does not become distorted.
第１図は発光ダイオード表示器の平面図、第２図と第３
図は従来の凹部の説明図、第４図は本案一実施例の説明
図で、第２図乃至第４図のａは断面図、ｂは平面図Ｃは
発光状態を示す図である。
１・・・リードフレーム、２，２・・・凹部、３ 、３
・・・発光、ダイオード、４，４・・・金属細線、６・
・・透光性樹脂、８・・・四角形、９，９・・・拘置。Figure 1 is a plan view of a light emitting diode display, Figures 2 and 3 are
FIG. 4 is an explanatory diagram of a conventional recessed portion, and FIG. 4 is an explanatory diagram of an embodiment of the present invention. In FIGS. 2 to 4, a is a sectional view, b is a plan view, and C is a diagram showing a light emitting state. DESCRIPTION OF SYMBOLS 1... Lead frame, 2, 2... Recessed part, 3, 3
...Light emitting, diode, 4,4...Metal thin wire, 6.
...Translucent resin, 8...square, 9,9...detention.
Claims (1)
ダイオードと、発光ダイオードに配線を施こす手段と、
少なくとも発光ダイオードを覆う透光性樹脂とを具備し
た発行ダイオード表示器に釦いて、前記凹部は開口端の
形状が多角形の角部を円の一部で構成した形状となって
いる事を特徴とする発光ダイオード表示器。A metal substrate having a recess, a light emitting diode fixed in the recess, a means for wiring the light emitting diode,
The light-emitting diode indicator is equipped with a light-transmitting resin that covers at least a light-emitting diode, and the concave portion is characterized in that the shape of the opening end is a shape in which a corner of a polygon is formed by a part of a circle. A light emitting diode indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979132913U JPS5935005Y2 (en) | 1979-09-25 | 1979-09-25 | light emitting diode display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979132913U JPS5935005Y2 (en) | 1979-09-25 | 1979-09-25 | light emitting diode display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5651370U JPS5651370U (en) | 1981-05-07 |
| JPS5935005Y2 true JPS5935005Y2 (en) | 1984-09-27 |
Family
ID=29364513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979132913U Expired JPS5935005Y2 (en) | 1979-09-25 | 1979-09-25 | light emitting diode display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5935005Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4983347B2 (en) * | 2007-04-03 | 2012-07-25 | ソニー株式会社 | Light emitting device and light source device |
-
1979
- 1979-09-25 JP JP1979132913U patent/JPS5935005Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5651370U (en) | 1981-05-07 |
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