JPH0752451A - Led array - Google Patents
Led arrayInfo
- Publication number
- JPH0752451A JPH0752451A JP19844293A JP19844293A JPH0752451A JP H0752451 A JPH0752451 A JP H0752451A JP 19844293 A JP19844293 A JP 19844293A JP 19844293 A JP19844293 A JP 19844293A JP H0752451 A JPH0752451 A JP H0752451A
- Authority
- JP
- Japan
- Prior art keywords
- led
- led array
- elements
- chip
- end surface
- 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.)
- Withdrawn
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電子写真方式の光プリ
ンタの光書き込み光源として用いるＬＥＤアレイに係
り、特に、そのＬＥＤアレイの発光部形状及びチップ端
面形状に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an LED array used as an optical writing light source for an electrophotographic optical printer, and more particularly to a shape of a light emitting portion and an end surface shape of a chip of the LED array.
【０００２】[0002]
【従来の技術】従来、電子写真方式の光プリンタの光書
き込み光源として用いるＬＥＤアレイとしては、以下に
示すようなものがあった。図４はかかる従来のＬＥＤア
レイの平面図、図５はそれを用いた光プリンタの部分側
面断面図である。2. Description of the Related Art Conventionally, the following LED arrays have been used as an optical writing light source for an electrophotographic optical printer. FIG. 4 is a plan view of such a conventional LED array, and FIG. 5 is a partial side sectional view of an optical printer using the same.
【０００３】これらの図において、１はＬＥＤアレイ、
２はＬＥＤアレイチップ、３はＬＥＤ素子（発光部）、
４は電極、５は集束性ロッドレンズ、６は感光体、Ａは
ＬＥＤアレイチップ端面、ＰはＬＥＤ素子ピッチ、Ｑは
結像位置、ｌ1 は最端のＬＥＤ素子の側面とＬＥＤアレ
イチップ端面との距離である。上記のＬＥＤアレイ１に
おいては、一定ＬＥＤ素子ピッチＰでＬＥＤ素子３が横
一列に配列したＬＥＤアレイチップ２を、一列に配列さ
せるとともに、隣接するＬＥＤアレイチップ２，２の端
面Ａの両側のＬＥＤ素子３，３のピッチがＬＥＤアレイ
チップ２内のＬＥＤ素子３，３のピッチＰと同じになる
ように構成されている。In these figures, 1 is an LED array,
2 is an LED array chip, 3 is an LED element (light emitting part),
Reference numeral 4 is an electrode, 5 is a converging rod lens, 6 is a photoconductor, A is an LED array chip end surface, P is an LED element pitch, Q is an image forming position, l 1 is a side surface of the last LED element and an LED array chip end surface. And the distance. In the LED array 1 described above, the LED array chips 2 in which the LED elements 3 are arranged in a horizontal row at a constant LED element pitch P are arranged in a row, and the LEDs on both sides of the end face A of the adjacent LED array chips 2 and 2 are arranged. The pitch of the elements 3 is set to be the same as the pitch P of the LED elements 3 in the LED array chip 2.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記し
た従来のＬＥＤアレイ１においては、ＬＥＤアレイチッ
プ２の端面Ａから、最端のＬＥＤ素子３の側面までの距
離ｌ1 が、図６に示すように、ｌ1 ＝１／２×（Ｐ−
Ｗ）と非常に短いため、チップ端面Ａの加工が困難であ
るという欠点があった。ここで、ＷはＬＥＤ素子の幅で
ある。However, in the conventional LED array 1 described above, the distance l 1 from the end surface A of the LED array chip 2 to the side surface of the LED element 3 at the end is as shown in FIG. , L 1 = 1/2 × (P-
Since W) is very short, there is a drawback that it is difficult to process the chip end surface A. Here, W is the width of the LED element.
【０００５】この問題を解決するために、図７及び図８
に示すような、ＬＥＤアレイが提案されている。このＬ
ＥＤアレイ１１においては、一定ピッチＰでＬＥＤ素子
１３が横一列に配列したＬＥＤアレイチップ１２を、千
鳥状に２列に配列した構成をとっている。これにより、
チップ端面Ａから最端のＬＥＤ素子１３の側面までの距
離ｌ2 は、ＬＥＤ素子１３，１３のピッチＰとは無関係
となり、チップ端面Ａの加工は容易になる。In order to solve this problem, FIG. 7 and FIG.
An LED array as shown in FIG. This L
The ED array 11 has a configuration in which the LED array chips 12 in which the LED elements 13 are arranged in a horizontal row at a constant pitch P are arranged in two rows in a staggered pattern. This allows
The distance l 2 from the chip end surface A to the side surface of the LED element 13 at the end is irrelevant to the pitch P of the LED elements 13 and 13, and the processing of the chip end surface A becomes easy.
【０００６】しかし、このような構成を取った場合、図
８に示すように、感光体１６上のＱの位置でＬＥＤ素子
１３，１３の像を正確に横一列に形成するためには、千
鳥状に配列されたＬＥＤアレイチップ１２，１２に対し
て、２本の集束性ロッドレンズ１５，１５を対応させな
ければならない上に、ＬＥＤアレイチップ１２、集束性
ロッドレンズ１５、感光体１６の相対位置の精度が確実
に合っていないといけないという欠点があった。However, in the case of adopting such a structure, as shown in FIG. 8, in order to accurately form the images of the LED elements 13 and 13 in a horizontal row at the position of Q on the photoconductor 16, a zigzag pattern is required. The two converging rod lenses 15 and 15 must correspond to the LED array chips 12 and 12 arranged in a line, and in addition, the LED array chip 12, the converging rod lens 15 and the photoconductor 16 are relative to each other. There was a drawback that the position accuracy had to match exactly.
【０００７】そこで、本発明は、上記問題点を解決する
ために、チップ端面からＬＥＤ素子までの距離を寸法的
に余裕をもたせ、端面加工を容易にし、かつ、集束性ロ
ッドレンズが一本だけで、また、ＬＥＤアレイチップ、
集束性ロッドレンズ、感光体の相対位置についてもそれ
ほど精度が要求されることがなく、正確なＬＥＤ素子の
像を、感光体上に横一列に正確に形成することができる
ＬＥＤアレイを提供することを目的とする。Therefore, in order to solve the above problems, the present invention provides a dimensional allowance for the distance from the chip end surface to the LED element, facilitates end surface processing, and has only one focusing rod lens. And also LED array chip,
To provide an LED array capable of accurately forming an image of an accurate LED element in a horizontal row on a photoconductor without requiring so much accuracy in relative positions of a converging rod lens and a photoconductor. With the goal.
【０００８】[0008]
【課題を解決するための手段】本発明は、上記目的を達
成するために、所定ピッチに配列したＬＥＤ素子を有す
るＬＥＤアレイチップを配列してなるＬＥＤアレイにお
いて、前記ＬＥＤ素子が三角形形状をなし、該ＬＥＤ素
子が正、逆交互に横一列に配列されるとともに、最端の
ＬＥＤ素子の最端の側辺の傾斜角に合わせて傾斜した端
面を有するＬＥＤアレイチップと、該ＬＥＤアレイチッ
プの端面を接合させて横一列に配置するようにしたもの
である。In order to achieve the above object, the present invention provides an LED array in which LED array chips having LED elements arranged at a predetermined pitch are arranged, wherein the LED elements have a triangular shape. An LED array chip in which the LED elements are arranged in a horizontal row alternately in the forward and reverse directions, and which has an end face inclined according to the inclination angle of the end side of the end LED element; The end faces are joined together and arranged in a horizontal row.
【０００９】また、所定ピッチに配列したＬＥＤ素子を
有するＬＥＤアレイチップを配列してなるＬＥＤアレイ
において、前記ＬＥＤ素子が台形形状をなし、該ＬＥＤ
素子が正、逆交互に横一列に配列されるとともに、最端
のＬＥＤ素子の最端の側辺の傾斜角に合わせて傾斜した
端面を有するＬＥＤアレイチップと、該ＬＥＤアレイチ
ップの端面を接合させて横一列に配置するようにしたも
のである。In an LED array in which LED array chips having LED elements arranged at a predetermined pitch are arranged, the LED elements have a trapezoidal shape,
The elements are arranged in a row in a row alternately in the forward and reverse directions, and an LED array chip having an end surface inclined according to the inclination angle of the end side of the endmost LED element is joined to the end surface of the LED array chip. It is arranged such that they are arranged in a horizontal row.
【００１０】[0010]
【作用】本発明によれば、上記したように、所定ピッチ
に配列したＬＥＤ素子を有するＬＥＤアレイチップを配
列してなるＬＥＤアレイにおいて、前記ＬＥＤ素子が三
角形形状又は台形形状をなし、該ＬＥＤ素子が正、逆交
互に横一列に配列されるとともに、最端のＬＥＤ素子の
最端の側辺の傾斜角に合わせて傾斜した端面を有するＬ
ＥＤアレイチップと、該ＬＥＤアレイチップの端面を接
合させて横一列に配置するようにしたので、端面加工を
容易にし、ＬＥＤ素子の充填密度を高くできる。According to the present invention, as described above, in an LED array in which LED array chips having LED elements arranged at a predetermined pitch are arranged, the LED elements have a triangular shape or a trapezoidal shape, and the LED elements are L are arranged in a horizontal row alternately in the forward and reverse directions, and L having an end face inclined according to the inclination angle of the end side of the endmost LED element.
Since the ED array chip and the end face of the LED array chip are joined and arranged in a horizontal row, the end face can be easily processed and the packing density of the LED elements can be increased.
【００１１】また、ＬＥＤ素子が横一列に配列できるた
め、一本の集束性ロッドレンズで発光タイミングをずら
すことなく、正確にＬＥＤ素子像を感光体上に露光でき
る。更に、ＬＥＤアレイ、集束性ロッドレンズ、感光体
の相対位置精度も緩和することができる。Further, since the LED elements can be arranged in a horizontal row, the LED element image can be accurately exposed on the photoconductor without shifting the light emission timing with one converging rod lens. Furthermore, the relative positional accuracy of the LED array, the converging rod lens, and the photoconductor can be relaxed.
【００１２】[0012]
【実施例】以下、図１は本発明の実施例を示すＬＥＤア
レイの平面図、図２はそれを用いた光プリンタの部分側
面断面図である。図中、２１はＬＥＤアレイ、２２はＬ
ＥＤアレイチップ、２３はＬＥＤ素子、２４は電極、２
５は集束性ロッドレンズ、２６は感光体、Ａはチップ端
面、ＰはＬＥＤ素子ピッチ、Ｑは結像位置を示してい
る。1 is a plan view of an LED array showing an embodiment of the present invention, and FIG. 2 is a partial side sectional view of an optical printer using the same. In the figure, 21 is an LED array, 22 is L
ED array chip, 23 is an LED element, 24 is an electrode, 2
5 is a converging rod lens, 26 is a photoconductor, A is a chip end surface, P is an LED element pitch, and Q is an image forming position.
【００１３】これらの図に示すように、ＬＥＤアレイ２
１は三角形形状を有するＬＥＤ素子２３が正、逆交互に
一定ピッチＰで横一列に配列され、かつ、チップ端面Ａ
が、チップ内の最端ＬＥＤ素子２３の最端の側辺の傾斜
角に合わせて傾斜したＬＥＤアレイチップ２２を横一列
に配列している。なお、２４はＬＥＤ素子２３に接続さ
れる電極である。As shown in these figures, the LED array 2
1, the LED elements 23 having a triangular shape are arranged in a horizontal row at a constant pitch P alternately in the forward and reverse directions, and the chip end surface A is provided.
However, the LED array chips 22 inclined according to the inclination angle of the end side of the endmost LED element 23 in the chip are arranged in a horizontal row. Reference numeral 24 is an electrode connected to the LED element 23.
【００１４】上記ＬＥＤアレイ２１のＬＥＤ素子２３の
像は、一本の集束性ロッドレンズ２５により、感光体２
６上のＱの位置に横一列に形成されるため、ＬＥＤ素子
２３の発光タイミングをずらす等の細工をする必要はな
く正確な露光が行われる。図３に示すように、ＬＥＤア
レイチップ２２の最端ＬＥＤ素子２３とチップ端面Ａの
距離はｌ3 となる。これを、図４に示した従来例のＬＥ
Ｄ素子３とチップ端面Ａの距離ｌ1 （図６参照）につい
て比較を行なうと、従来例のＬＥＤ素子の形状が一辺Ｗ
の正方形、本発明のＬＥＤ素子２３の形状が一辺Ｗの正
三角形とし、Ｗの長さはＬＥＤ素子の配列ピッチＰの７
０％とする。The image of the LED element 23 of the LED array 21 is formed by the single focusing rod lens 25, and
Since it is formed in a horizontal row at the position of Q on 6, it is not necessary to make a work such as shifting the light emission timing of the LED element 23, and accurate exposure is performed. As shown in FIG. 3, the distance between the endmost LED element 23 of the LED array chip 22 and the chip end surface A is l 3 . This is the conventional LE shown in FIG.
Comparing the distance l 1 (see FIG. 6) between the D element 3 and the chip end surface A, the shape of the LED element of the conventional example is W on one side.
, The shape of the LED element 23 of the present invention is an equilateral triangle with one side W, and the length of W is 7 of the arrangement pitch P of the LED elements.
0%
【００１５】図６の従来例について考えると、ＬＥＤ素
子３とチップ端面Ａの距離ｌ1 は、 ｌ1 ＝（１／２）×（Ｐ−Ｗ）＝０．１５Ｐとなる。一
方、本発明の実施例におけるＬＥＤ素子２３とチップ端
面Ａの距離ｌ3 は、図３から、 ｌ3 ＝（１／２）×〔Ｐ−（１／２）Ｗ〕×ｓｉｎθ≒
０．２８ｐ となり、従来例のＬＥＤ素子３とチップ端面Ａの距離ｌ
1 より、約２倍の距離が得られ、本発明のＬＥＤアレイ
チップ２２の端面Ａの加工を容易に行うことができる。Considering the conventional example of FIG. 6, the distance l 1 between the LED element 3 and the chip end face A is l 1 = (1/2) × (P−W) = 0.15P. On the other hand, the distance l 3 between the LED element 23 and the chip end face A in the embodiment of the present invention is as follows from FIG. 3: l 3 = (1/2) × [P− (1/2) W] × sin θ≈
0.28p, which is the distance l between the LED element 3 of the conventional example and the chip end surface A.
From 1 , the distance about twice can be obtained, and the end surface A of the LED array chip 22 of the present invention can be easily processed.
【００１６】また、このことは、本発明を用いることに
より、同一のチップ端面加工技術を用いても、従来のＬ
ＥＤ素子の充填密度より大幅に高い充填密度にすること
が可能であることは明らかである。図９は本発明の他の
実施例を示すＬＥＤアレイの平面図である。図９におい
て、３１はＬＥＤアレイ、３２はＬＥＤアレイチップ、
３３はＬＥＤ素子、Ａはチップ端面、ＰはＬＥＤ素子ピ
ッチである。なお、ＬＥＤ素子３３の電極等は省略され
ている。Further, this means that, by using the present invention, even if the same chip end surface processing technique is used, the conventional L
Obviously, it is possible to achieve a packing density that is significantly higher than the packing density of the ED element. FIG. 9 is a plan view of an LED array showing another embodiment of the present invention. In FIG. 9, 31 is an LED array, 32 is an LED array chip,
33 is an LED element, A is a chip end surface, and P is an LED element pitch. The electrodes and the like of the LED element 33 are omitted.
【００１７】この図に示すように、ＬＥＤ素子３３は台
形形状をしており、正逆交互に横一列に配列されてい
る。この場合でも、ＬＥＤアレイチップ３２の端面Ａの
加工は、図４の従来例よりも容易であり、ＬＥＤ素子の
充填密度も高くすることが可能である。なお、本発明は
上記実施例に限定されるものではなく、本発明の趣旨に
基づいて種々の変形が可能であり、これらを本発明の範
囲から排除するものではない。As shown in this figure, the LED elements 33 have a trapezoidal shape and are arranged in a horizontal row alternately in the forward and reverse directions. Even in this case, the processing of the end surface A of the LED array chip 32 is easier than that of the conventional example shown in FIG. 4, and the packing density of the LED elements can be increased. The present invention is not limited to the above-mentioned embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.
【００１８】[0018]
【発明の効果】以上、詳細に説明したように、本発明に
よれば、ＬＥＤアレイチップ内のＬＥＤ素子の形状を三
角形又は台形にし、正、逆交互に横一列に配列させ、更
にチップ端面をチップ内の最端のＬＥＤ素子の最端の側
辺の傾斜角に合わせて傾斜した形状にすることにより、
チップ端面加工を容易にし、ＬＥＤ素子の充填密度を高
くすることができる。As described above in detail, according to the present invention, the LED elements in the LED array chip are shaped like a triangle or a trapezoid, and the LED elements are arranged in a horizontal row alternately in the forward and reverse directions. By making the shape inclined according to the inclination angle of the end side of the endmost LED element in the chip,
The chip end surface processing can be facilitated and the packing density of LED elements can be increased.
【００１９】また、ＬＥＤ素子を横一列に配列できるた
め、一本の集束性ロッドレンズで発光タイミングをずら
すことなく、正確にＬＥＤ素子像を感光体上に露光する
ことができる。更に、ＬＥＤアレイ、集束性ロッドレン
ズ、感光体の相対位置精度も緩和することができる。Further, since the LED elements can be arranged in a horizontal row, the LED element image can be accurately exposed on the photoconductor without shifting the light emission timing with one converging rod lens. Furthermore, the relative positional accuracy of the LED array, the converging rod lens, and the photoconductor can be relaxed.
【図１】本発明の実施例を示すＬＥＤアレイの平面図で
ある。FIG. 1 is a plan view of an LED array showing an embodiment of the present invention.
【図２】本発明の実施例を示す光プリンタの部分側面断
面図である。FIG. 2 is a partial side sectional view of an optical printer showing an embodiment of the present invention.
【図３】本発明の実施例を示すＬＥＤ素子の配列寸法を
示す図である。FIG. 3 is a diagram showing array dimensions of LED elements showing an embodiment of the present invention.
【図４】従来のＬＥＤアレイの平面図である。FIG. 4 is a plan view of a conventional LED array.
【図５】従来の光プリンタの部分側面断面図である。FIG. 5 is a partial side sectional view of a conventional optical printer.
【図６】従来のＬＥＤ素子の配列寸法を示す図である。FIG. 6 is a diagram showing array dimensions of conventional LED elements.
【図７】従来の他のＬＥＤアレイの平面図である。FIG. 7 is a plan view of another conventional LED array.
【図８】従来の他の光プリンタの部分側面断面図であ
る。FIG. 8 is a partial side sectional view of another conventional optical printer.
【図９】本発明の他の実施例を示すＬＥＤアレイの平面
図である。FIG. 9 is a plan view of an LED array showing another embodiment of the present invention.
２１，３１ ＬＥＤアレイ ２２，３２ ＬＥＤアレイチップ ２３，３３ ＬＥＤ素子 ２４ 電極 ２５ 集束性ロッドレンズ ２６ 感光体 Ａ チップ端面 Ｐ ＬＥＤ素子ピッチ Ｑ 結像位置 21, 31 LED array 22, 32 LED array chip 23, 33 LED element 24 Electrode 25 Focusing rod lens 26 Photoreceptor A Chip end face P LED element pitch Q Imaging position
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０１Ｌ 33/00 Ａ 7376−4Ｍ Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location H01L 33/00 A 7376-4M
Claims (2)
るＬＥＤアレイチップを配列してなるＬＥＤアレイにお
いて、（ａ）前記ＬＥＤ素子が三角形形状をなし、該Ｌ
ＥＤ素子が正、逆交互に横一列に配列されるとともに、
最端のＬＥＤ素子の最端の側辺の傾斜角に合わせて傾斜
した端面を有するＬＥＤアレイチップと、（ｂ）該ＬＥ
Ｄアレイチップの端面を接合させて横一列に配置してな
ることを特徴とするＬＥＤアレイ。1. An LED array in which LED array chips having LED elements arranged at a predetermined pitch are arranged, wherein: (a) the LED elements have a triangular shape;
The ED elements are arranged in a horizontal row alternately in the forward and reverse directions.
An LED array chip having an end face inclined according to the inclination angle of the end side of the endmost LED element, and (b) the LE
An LED array in which the end faces of a D array chip are joined and arranged in a horizontal row.
るＬＥＤアレイチップを配列してなるＬＥＤアレイにお
いて、（ａ）前記ＬＥＤ素子が台形形状をなし、該ＬＥ
Ｄ素子が正、逆交互に横一列に配列されるとともに、最
端のＬＥＤ素子の最端の側辺の傾斜角に合わせて傾斜し
た端面を有するＬＥＤアレイチップと、（ｂ）該ＬＥＤ
アレイチップの端面を接合させて横一列に配置してなる
ことを特徴とするＬＥＤアレイ。2. An LED array in which LED array chips having LED elements arranged at a predetermined pitch are arranged, wherein: (a) the LED elements have a trapezoidal shape,
An LED array chip in which the D elements are arranged in a horizontal row alternately in the forward and reverse directions, and each LED element has an end face inclined according to the inclination angle of the outermost side of the LED element, and (b) the LED.
An LED array in which end faces of an array chip are joined and arranged in a horizontal row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19844293A JPH0752451A (en) | 1993-08-10 | 1993-08-10 | Led array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19844293A JPH0752451A (en) | 1993-08-10 | 1993-08-10 | Led array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0752451A true JPH0752451A (en) | 1995-02-28 |
Family
ID=16391161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19844293A Withdrawn JPH0752451A (en) | 1993-08-10 | 1993-08-10 | Led array |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0752451A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011104771A1 (en) | 2010-02-24 | 2011-09-01 | 三菱電機株式会社 | Image sensor ic and contact image sensor using same |
| CN102983146A (en) * | 2011-09-02 | 2013-03-20 | 斯坦雷电气株式会社 | LED array capable of reducing uneven brightness distribution |
| JP2013062279A (en) * | 2011-09-12 | 2013-04-04 | Stanley Electric Co Ltd | Semiconductor light-emitting element array and vehicle lighting fixture |
| KR20130075526A (en) * | 2011-12-27 | 2013-07-05 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device having the same |
| JP2015170813A (en) * | 2014-03-10 | 2015-09-28 | 日亜化学工業株式会社 | Light emitting device |
-
1993
- 1993-08-10 JP JP19844293A patent/JPH0752451A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011104771A1 (en) | 2010-02-24 | 2011-09-01 | 三菱電機株式会社 | Image sensor ic and contact image sensor using same |
| US9438762B2 (en) | 2010-02-24 | 2016-09-06 | Mitsubishi Electric Corporation | Image sensor IC having linearly and obliquely disposed light receiving elements and contact image sensor using same |
| CN102983146A (en) * | 2011-09-02 | 2013-03-20 | 斯坦雷电气株式会社 | LED array capable of reducing uneven brightness distribution |
| EP2565927A3 (en) * | 2011-09-02 | 2016-05-25 | Stanley Electric Co., Ltd. | LED array capable of reducing uneven brightness distribution |
| JP2013062279A (en) * | 2011-09-12 | 2013-04-04 | Stanley Electric Co Ltd | Semiconductor light-emitting element array and vehicle lighting fixture |
| KR20130075526A (en) * | 2011-12-27 | 2013-07-05 | 엘지디스플레이 주식회사 | Backlight unit and liquid crystal display device having the same |
| JP2015170813A (en) * | 2014-03-10 | 2015-09-28 | 日亜化学工業株式会社 | Light emitting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20001031 |