JP2932471B2 - Surface light source and method for bonding light source to light guide plate - Google Patents
Surface light source and method for bonding light source to light guide plateInfo
- Publication number
- JP2932471B2 JP2932471B2 JP18254395A JP18254395A JP2932471B2 JP 2932471 B2 JP2932471 B2 JP 2932471B2 JP 18254395 A JP18254395 A JP 18254395A JP 18254395 A JP18254395 A JP 18254395A JP 2932471 B2 JP2932471 B2 JP 2932471B2
- Authority
- JP
- Japan
- Prior art keywords
- guide plate
- light source
- light guide
- light
- support
- 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 - Fee Related
Links
Landscapes
- Led Devices (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Led Device Packages (AREA)
- Optical Couplings Of Light Guides (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＬＥＤ光源と導光板と
を接合する方法であって、特にバックライト用として使
用する光源と導光板との接合方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining an LED light source and a light guide plate, and more particularly to a method for joining a light source and a light guide plate used for a backlight.
【０００２】[0002]
【従来の技術】液晶ディスプレイ等の自発光しない薄型
表示装置のバックライト用面光源として、ＬＥＤランプ
が注目されている。ＬＥＤランプを用いた光源は、導光
板の厚さ方向にあたる端面よりＬＥＤランプの光を導入
し、面方向で全反射させて面光源とされる。導光板の厚
さは通常２〜５ミリ程度と薄く、ＬＥＤランプはこの薄
い導光板の端面に埋め込まれたり、あるいは支持体等を
介して密着させることにより光が導光板に導入される。2. Description of the Related Art An LED lamp has attracted attention as a surface light source for a backlight of a thin display device such as a liquid crystal display which does not emit light by itself. A light source using an LED lamp is formed as a surface light source by introducing light from the LED lamp from an end face in a thickness direction of the light guide plate and totally reflecting the light in the surface direction. The thickness of the light guide plate is usually as thin as about 2 to 5 mm, and light is introduced into the light guide plate by embedding the LED lamp in the end face of the thin light guide plate or by closely attaching it via a support or the like.
【０００３】図４は従来の方法により導光板１１の端面
に、ＬＥＤランプ光源が接合された面光源の状態を示す
断面図である。ＬＥＤランプ１２が装着された支持体１
３と、導光板１１の端面とを接合することにより、導光
板１１の平面が面光源とされている。また支持体１３に
は、導光板１１の端面を嵌挿するための凹部が設けられ
ている場合がある。支持体１３はＬＥＤランプ１２を固
定し、導光板１１の端面にＬＥＤランプ１２を密着させ
て光導入する際に使用されるもので、導光板１１の端面
に接合される。従来では、光源と導光板１１の端面とを
接合させるには、突き合わせによる方法と接着剤を用い
た充填接着による方法が一般的であった。図４は、突き
合わせによる方法で光源と導光板１１を接合させた状態
を示したもので、ＬＥＤランプ１２が装着された支持体
１３に設けられた凹部に、導光板１１の端面を嵌挿させ
て光源と導光板１１とを接合している。接着剤を用いた
充填接着による方法は、図４の突き合わせの方法と同じ
ようにＬＥＤランプ１２が装着された支持体１３に設け
られた凹部に、導光板１１の端面を嵌挿させるものであ
るが、前記支持体１３の凹部と導光板１１の端面とは透
明な接着剤を介して接合されている。FIG. 4 is a sectional view showing a state of a surface light source in which an LED lamp light source is joined to an end face of a light guide plate 11 by a conventional method. Support 1 on which LED lamp 12 is mounted
3 and the end face of the light guide plate 11 are joined to make the plane of the light guide plate 11 a surface light source. In addition, the support 13 may be provided with a concave portion for fitting the end surface of the light guide plate 11. The support 13 is used when the LED lamp 12 is fixed and the LED lamp 12 is brought into close contact with the end face of the light guide plate 11 to introduce light, and is joined to the end face of the light guide plate 11. Conventionally, in order to join the light source and the end face of the light guide plate 11, a method of butting and a method of filling and bonding using an adhesive have been generally used. FIG. 4 shows a state in which the light source and the light guide plate 11 are joined by a butting method. The end face of the light guide plate 11 is inserted into a concave portion provided in the support 13 on which the LED lamp 12 is mounted. Thus, the light source and the light guide plate 11 are joined. In the method by filling and bonding using an adhesive, the end face of the light guide plate 11 is inserted into a concave portion provided in the support 13 on which the LED lamp 12 is mounted, in the same manner as the method of butting in FIG. However, the concave portion of the support 13 and the end surface of the light guide plate 11 are joined via a transparent adhesive.
【０００４】[0004]
【発明が解決しようとする課題】ＬＥＤ光源と導光板の
端面とを接合させるには、前記のように突き合わせによ
る方法と、接着剤を介する方法とがある。しかし、接着
剤等を使わずに密着固定する突き合わせによる方法で
は、光源と導光板の接合面が平滑鏡面でない場合、接合
面に隙間が生じ、光源と導光板の端面との間に空気の層
が出来てしまい、光の導入効率が悪くなるという問題が
ある。また、接着剤を介して光源と導光板とを接合する
方法では、接着剤として例えばエポキシ樹脂等を用いる
ため光の導入効率は良い。しかしながら、このような接
着剤は粘度が低いため作業性が悪く、硬化するまでその
硬化条件で保持しなければならず、接着剤の流れ出し等
の接着ミスが起こりやすいという問題がある。更に、接
着剤は平滑鏡面でなければ接着しにくく、また硬化時に
気泡が混入する恐れもある。As described above, the LED light source and the end face of the light guide plate are joined by a butting method or an adhesive method. However, in the method of abutting and fixing without using an adhesive or the like, when the joint surface between the light source and the light guide plate is not a smooth mirror surface, a gap is formed in the joint surface and an air layer is formed between the light source and the end surface of the light guide plate. And the efficiency of introducing light deteriorates. Further, in the method of joining the light source and the light guide plate via an adhesive, light introduction efficiency is high because, for example, an epoxy resin or the like is used as the adhesive. However, such an adhesive has a low viscosity and thus has poor workability, and must be held under the curing conditions until it is cured, and there is a problem that an adhesion error such as an outflow of the adhesive is likely to occur. Furthermore, the adhesive is difficult to adhere unless it is a smooth mirror surface, and air bubbles may be mixed during curing.
【０００５】従って本発明はこのような事情を鑑みて成
されたものであり、その目的とするところは、光源と導
光板とを接合するに際し、それぞれの接合面に多少の凹
凸があっても充分な光の導入効率を得ることができる光
源と導光板との接合方法を提供することにある。Accordingly, the present invention has been made in view of such circumstances, and an object of the present invention is to provide a light source and a light guide plate which have a slight unevenness in their joint surfaces when they are joined. An object of the present invention is to provide a method for joining a light source and a light guide plate that can obtain sufficient light introduction efficiency.
【０００６】[0006]
【課題を解決するための手段】本発明の面光源は、平面
が面光源となる導光板と、導光板の端面と接合され支持
体に複数個のＬＥＤランプが導光板の端面方向に沿って
装着されてなる光源とを有する面光源である。特に導光
板にはその端面に沿って透明な弾性体を有する両面テー
プが設けられていると共に両面テープを介して導光板の
端面と光源を構成する複数のＬＥＤランプの先端とが接
合してなる面光源である。また、導光板がアクリル或い
は、ポリカーボネートであると共に両面テープが、シリ
コン樹脂、シリコンゴム、アクリルフォームのいずれか
の面光源である。さらに、本発明の光源と導光板との接
合方法は、支持体に複数個のＬＥＤランプが装着されて
なる光源と、導光板の端面とを接合する方法である。特
に、支持体に装着された複数のＬＥＤランプの先端と導
光板の端面とを導光板の端面に沿って設けられた透明な
弾性体を有する両面テープを介して接合する光源と導光
板との接合方法である。 The surface light source of the present invention is a flat light source.
Is connected to the light guide plate that becomes the surface light source and the end surface of the light guide plate and supported
Multiple LED lamps on the body along the end face of the light guide plate
This is a surface light source having a light source mounted thereon. Especially light guide
The plate has a double-sided tape with a transparent elastic body along its edge.
Is provided and the light guide plate is
The end face is in contact with the tips of the LED lamps that constitute the light source.
It is a surface light source combined. Also, if the light guide plate is acrylic or
Is polycarbonate and double-sided tape is
Any of resin, silicone rubber, acrylic foam
Surface light source. Further, the connection between the light source of the present invention and the light guide plate is performed.
The method is to mount multiple LED lamps on the support
This is a method of joining the light source and the end face of the light guide plate. Special
The tip of the LED lamps mounted on the support
A transparent plate provided along the end surface of the light guide plate with the end surface of the light plate
Light source and light guide bonded via double-sided tape with elastic body
It is a joining method with a board.
【０００７】図１（ａ）及び図２（ａ）は本発明を示す
図であり、支持体３にＬＥＤランプ２が装着されてなる
光源と、導光板１の端面５とを接合することにより、導
光板１の平面が面光源とされている。支持体３と導光板
１の端面５とは、透明な弾性体４を介して接合されてい
る。[0007] Figure 1 (a) and 2 (a) is a diagram showing the onset bright, be joined with a light source LED lamp 2 is mounted on the support 3 and an end face 5 of the light guide plate 1 Thereby, the plane of the light guide plate 1 is a surface light source. The support 3 and the end face 5 of the light guide plate 1 are joined via a transparent elastic body 4.
【０００８】[0008]
【０００９】また、図１（ｂ）及び図２（ｂ）も本発明
を示す図であり、光源の支持体３’には、導光板１の端
面５と嵌合するような凹部６が形成されており、この端
面５と凹部６は透明な弾性体４を介して接合されてい
る。前記に示したように支持体に凹部を設けず、そのま
ま接合することもできるが、接着位置のズレ等が生じる
ため、支持体に凹部を形成し導光板の端面を嵌挿させて
接合する方が好ましい。[0009] FIG. 1 (b) and 2 (b) also present invention
A concave portion 6 is formed in the support 3 ′ of the light source so as to fit with the end surface 5 of the light guide plate 1, and the end surface 5 and the concave portion 6 are interposed via the transparent elastic body 4. Are joined. As described above, it is possible to join without providing a concave portion on the support, but it is possible to shift the bonding position or the like, so that a concave portion is formed in the support, and the end surface of the light guide plate is fitted and joined. Is preferred.
【００１０】上記弾性体４としては、弾性を有するもの
であれば何でも良く特に限定するものではないが、ＬＥ
Ｄランプ２の発光を透過する樹脂やゴムを用い、好まし
くは、シリコン樹脂、シリコンゴム、アクリルフォー
ム、または弾性を有する接着剤のいずれかを用いる。弾
性を有する接着剤としては、例えば弾性のある基材の両
面に接着剤が塗布された両面テープや、接着後も弾性を
有する透明な接着剤等が用いられる。また導光板１とし
ては、例えばアクリル、ポリカーボネート等を用いるこ
とができる。The elastic body 4 is not particularly limited as long as it has elasticity.
A resin or rubber that transmits the light of the D lamp 2 is used, and preferably, any one of a silicone resin, a silicone rubber, an acrylic foam, and an elastic adhesive is used. As the adhesive having elasticity, for example, a double-sided tape in which an adhesive is applied to both surfaces of an elastic substrate, a transparent adhesive having elasticity even after bonding, or the like is used. As the light guide plate 1, for example, acrylic, polycarbonate, or the like can be used.
【００１１】[0011]
【作用】本発明の接合方法は、図１および図２に示すよ
うに、導光板１の端面５と、ＬＥＤランプ２が装着され
た支持体３または３’とを、透明な弾性体４を介して接
合する。従って、接着剤を介して接合していた時に問題
となっていた接着剤の流れ出し等の接着ミスは起こら
ず、気泡が混入する恐れもない。According to the joining method of the present invention, as shown in FIGS. 1 and 2, an end face 5 of a light guide plate 1 and a support 3 or 3 'on which an LED lamp 2 is mounted are connected to a transparent elastic body 4. Join through. Therefore, there is no occurrence of an adhesion error such as an outflow of the adhesive, which has been a problem when bonding is performed via the adhesive, and there is no risk of bubbles being mixed.
【００１２】更に、従来の突き合わせや充填接着による
方法では、光源や導光板の接合面が平滑鏡面でなく凹凸
がある場合、接合面に隙間が生じ、光源と導光板との間
に空気の層が出来てしまい、光の導入効率が悪くなって
いたが、本発明では弾性体４を介して接合するためこの
様な問題が無くなる。これは弾性体４がクッションの作
用をすることにより、光源と導光板１との間にできた隙
間を埋めてしまう作用があるからである。Further, according to the conventional method of abutting or filling and bonding, when the joint surface of the light source and the light guide plate is not a smooth mirror surface but has irregularities, a gap is formed in the joint surface and an air layer is formed between the light source and the light guide plate. Although the light introduction efficiency has deteriorated, such a problem is eliminated in the present invention because the bonding is performed via the elastic body 4. This is because the elastic body 4 acts as a cushion to fill a gap formed between the light source and the light guide plate 1.
【００１３】また、図３は図２と同じように本発明の方
法で光源と導光板とを接合させた状態を示す断面図であ
る。ＬＥＤランプ２は支持体３’に装着して光源とされ
るが、この時、支持体３’の接合面ＡとＬＥＤランプ２
の先端が同一平面となるようにＬＥＤランプ２を装着し
なければ、支持体３’の接合面ＡとＬＥＤランプ２の先
端との間に段差ができてしまう。つまり、図３（ａ）の
ようにＬＥＤランプ２の先端が支持体３’の接合面Ａか
ら突出したり、図３（ｂ）のように支持体３の接合面Ａ
から陥没したりといった作業ミスが生じた場合でも、本
発明の接合方法を用いれば、上記で示したように弾性体
４が支持体３’の接合面ＡとＬＥＤランプ２の先端との
間にできた段差を埋めてしまうため、光の導入効率は減
少しない。FIG. 3 is a sectional view showing a state in which the light source and the light guide plate are joined by the method of the present invention, similarly to FIG. The LED lamp 2 is mounted on a support 3 ′ to serve as a light source. At this time, the bonding surface A of the support 3 ′ and the LED lamp 2
If the LED lamp 2 is not mounted so that the tips of the LED lamps 2 are flush with each other, a step is formed between the joint surface A of the support 3 ′ and the tip of the LED lamp 2. That is, as shown in FIG. 3A, the tip of the LED lamp 2 protrudes from the bonding surface A of the support 3 ′, or as shown in FIG.
Even if a work error such as a depression occurs, the bonding method of the present invention allows the elastic body 4 to move between the bonding surface A of the support 3 ′ and the tip of the LED lamp 2 as described above. Since the formed steps are filled, the light introduction efficiency does not decrease.
【００１４】ところで弾性体として、シリコン樹脂、シ
リコンゴム、アクリルフォーム等を用いた場合、従来の
方法に比べ、上記のように作業性が良く光の導入効率も
減少しないという利点があるが、これらの弾性体を用い
て光源と導光板とを接合させるには、接合時にある程度
の圧力を加えて、そのまま保持し続ける必要がある。し
かしながら、弾性を有する接着剤を用いて光源と導光板
とを接合した場合、シリコン樹脂やアクリルフォーム等
と異なり接着性を有するため、瞬間的に圧力を加えるだ
けで、その状態を維持できるので作業性が一段と良くな
る。By the way, when silicon resin, silicone rubber, acrylic foam, or the like is used as the elastic body, there is an advantage that the workability is good and the light introduction efficiency does not decrease as described above as compared with the conventional method. In order to join the light source and the light guide plate using the elastic body, it is necessary to apply a certain pressure at the time of joining and keep the light source and the light guide plate as they are. However, when the light source and the light guide plate are joined using an elastic adhesive, they have an adhesive property unlike silicon resin or acrylic foam, so that the state can be maintained only by momentarily applying pressure. Sex is further improved.
【００１５】[0015]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。ただし、以下に示す実施例は、本発明の一実施例
を示すものであって、本発明を下記のものに特定するも
のではない。Embodiments of the present invention will be described below with reference to the drawings. However, the following examples show one example of the present invention, and do not limit the present invention to the following.
【００１６】図１は本発明の方法を説明する斜視図であ
り、図２は本発明の方法の一実施例による光源と導光板
との接合状態を示す断面図であり、図中の符号１は導光
板、２はＬＥＤランプ、３および３’は支持体、４は透
明な弾性体、５は導光板１の端面、６は光源の支持体
３’に形成された凹部を各々示している。FIG. 1 is a perspective view for explaining a method of the present invention, and FIG. 2 is a cross-sectional view showing a joint state between a light source and a light guide plate according to an embodiment of the present invention. Is a light guide plate, 2 is an LED lamp, 3 and 3 'are supports, 4 is a transparent elastic body, 5 is an end face of the light guide plate 1, and 6 is a recess formed in the support 3' of the light source. .
【００１７】［実施例１］大きさが１２６×９６×３ｔ
のアクリル板の裏面に、拡散パターンをスクリーン印刷
した導光板１を作製する。続いて、発光波長４８０ｎ
ｍ、発光出力２ｍＷを有する高輝度青色ＬＥＤランプ２
を複数個用意し、これを白色ポリカーボネートの支持体
３に等間隔で固定してバー光源を作製する。[Embodiment 1] The size is 126 × 96 × 3t.
The light guide plate 1 in which a diffusion pattern is screen-printed on the back surface of the acrylic plate is manufactured. Subsequently, the emission wavelength 480n
m, high-brightness blue LED lamp 2 having an emission output of 2 mW
Are prepared and fixed to the support 3 of white polycarbonate at equal intervals to produce a bar light source.
【００１８】次に上記の導光板１の端面５を、図１
（ａ）に示すように透明弾性体４のシリコン樹脂を介し
て光源と接合させる。図２（ａ）は、この時の導光板１
と光源との接合状態を示す断面図である。Next, the end face 5 of the light guide plate 1 is
As shown in (a), the transparent elastic body 4 is bonded to the light source via the silicone resin. FIG. 2A shows the light guide plate 1 at this time.
FIG. 3 is a cross-sectional view showing a bonding state between the light source and the light source.
【００１９】［実施例２］実施例１と同様にして導光板
１と光源を作製する。続いて、光源と導光板１とを厚さ
０．１２５ｍｍｔの透明な両面テープ（３Ｍ社製 F-946
9pc）を介して接合させる。この両面テープは、実施例
１で用いたシリコン樹脂のような弾性体４の代わりに用
いるもので、接着後も弾性を有する透明な接着剤よりな
る。Example 2 A light guide plate 1 and a light source are manufactured in the same manner as in Example 1. Subsequently, the light source and the light guide plate 1 were sealed with a transparent double-sided tape (F-946 manufactured by 3M) having a thickness of 0.125 mmt.
9pc). This double-sided tape is used in place of the elastic body 4 such as the silicone resin used in Example 1, and is made of a transparent adhesive having elasticity even after bonding.
【００２０】［実施例３］実施例１と同様にして導光板
１を作製する。続いて、高輝度青色ＬＥＤランプ２を、
白色ポリカーボネートの支持体３’に等間隔で固定して
バー光源を作製する。この時白色ポリカーボネートの支
持体３’には、図１（ｂ）のように導光板１の端面５と
嵌合する凹部６が形成されている。Example 3 A light guide plate 1 is manufactured in the same manner as in Example 1. Subsequently, the high-intensity blue LED lamp 2 is
A bar light source is manufactured by fixing the light source to a white polycarbonate support 3 'at regular intervals. At this time, a concave portion 6 that fits with the end face 5 of the light guide plate 1 is formed in the support 3 ′ made of white polycarbonate as shown in FIG.
【００２１】次に、上記の導光板１の端面５を、厚さ
０．１２０ｍｍｔの透明な両面テープ（３Ｍ社製 #948
3）を介して、光源の凹部６に嵌挿させる。この両面テ
ープも、実施例２と同様にシリコン樹脂のような弾性体
４の代わりに用いるもので、接着後も弾性を有する透明
な接着剤よりなる。図２（ｂ）は、この時の導光板１と
光源との接合状態を示す断面図である。Next, the end face 5 of the light guide plate 1 is attached to a transparent double-sided tape (#M # 948 manufactured by 3M) having a thickness of 0.120 mmt.
Through 3), the light source is fitted into the concave portion 6 of the light source. This double-sided tape is also used in place of the elastic body 4 such as silicone resin as in the second embodiment, and is made of a transparent adhesive having elasticity even after bonding. FIG. 2B is a cross-sectional view showing a state of joining the light guide plate 1 and the light source at this time.
【００２２】［実施例４］実施例３と同様にして導光板
と光源を作製する。続いて、弾性体であるアクリルフォ
ームの両面に接着剤が塗布された厚さ１ｍｍｔの透明な
両面テープ（３Ｍ社製 Y-4910J）を介して光源の凹部６
と導光板の端面５とを接合させる。Embodiment 4 A light guide plate and a light source are manufactured in the same manner as in Embodiment 3. Subsequently, the concave portion 6 of the light source is passed through a transparent 1 mmt double-sided tape (3M Y-4910J) in which an adhesive is applied to both sides of an acrylic foam as an elastic body.
And the end face 5 of the light guide plate.
【００２３】本発明の実施例１〜４の方法で光源と導光
板とが接合された面光源と、従来例として突き合わせに
よる方法で接合された面光源について、それぞれ測定し
た発光輝度と光の導入効率を表１に示す。ただし、実施
例１〜４および従来例において、使用した導光板の材質
および大きさ、ＬＥＤランプの発光出力および個数等、
測定条件は全て同じで、接合方法のみが異なるものとす
る。この表からもわかるように、従来の方法で得られた
面光源では１１６．９ｎｉｔであった発光輝度が、本発
明の方法で得られた面光源は最高で１４６．７ｎｉｔの
発光輝度を示した。また光の導入効率においては、従来
の方法で得られた面光源を１００％とした場合、本発明
の方法で得られた面光源は最高で１２５．５％まで向上
した。For the surface light source in which the light source and the light guide plate are joined by the methods of the first to fourth embodiments of the present invention, and the surface light source joined by the butt method as a conventional example, the measured emission luminance and light introduction are respectively measured. Table 1 shows the efficiency. However, in Examples 1 to 4 and the conventional example, the material and size of the light guide plate used, the light emission output and the number of LED lamps, etc.
All the measurement conditions are the same, and only the joining method is different. As can be seen from this table, the emission luminance of the surface light source obtained by the conventional method was 116.9 nit, but the emission intensity of the surface light source obtained by the method of the present invention showed a maximum of 146.7 nit. . Further, regarding the light introduction efficiency, when the surface light source obtained by the conventional method was set to 100%, the surface light source obtained by the method of the present invention was improved up to 125.5%.
【００２４】以上のように本発明の方法を用いて導光板
１と光源とを接合すれば、従来の突き合わせによる接合
時よりも、発光輝度および光の導入効率を向上させるこ
とが出来る。As described above, when the light guide plate 1 and the light source are joined using the method of the present invention, the light emission luminance and the light introduction efficiency can be improved as compared with the conventional joining by butting.
【００２５】[0025]
【表１】 [Table 1]
【００２６】本実施例ではＬＥＤランプ２として高輝度
青色ＬＥＤランプを用いたが、特に限定するものではな
い。光源の支持体としては、白色のポリカーボネートを
用いたが、その他アクリル、液晶ポリマー、ＰＢＣ、Ａ
ＢＳ等反射効率の良いものであればよい。また、光の拡
散方法としてスクリーン印刷を用いたが、その他ブラス
ト、成形等、均一な面発光が得られるものであれば何で
もよい。In this embodiment, a high-brightness blue LED lamp is used as the LED lamp 2, but there is no particular limitation. As the light source support, white polycarbonate was used, but other acrylic, liquid crystal polymer, PBC, A
Any material having good reflection efficiency such as BS may be used. Although screen printing was used as a method of diffusing light, any other method can be used as long as uniform surface light emission can be obtained, such as blasting and molding.
【００２７】[0027]
【発明の効果】以上説明したように、本発明の方法は透
明な弾性体を介して光源と導光板とを接合するため、そ
れぞれの接合面に多少の凹凸があっても光源と導光板と
の間に空気の層ができないので、従来の突き合わせの方
法に比べ一段と光の導入効率を向上させることが出来
る。また、従来の接着剤を介して接合する方法では、流
れ出し等の接着ミスが起こり易かったが、本発明の方法
では接着ミスがほとんど起こらず作業性が良くなるとい
う利点がある。As described above, according to the method of the present invention, since the light source and the light guide plate are joined through the transparent elastic body, the light source and the light guide plate can be connected to each other even if each joint surface has some irregularities. Since no air layer is formed between the two, the light introduction efficiency can be further improved as compared with the conventional matching method. In addition, in the conventional method of joining via an adhesive, an adhesion error such as run-out is likely to occur, but the method of the present invention has an advantage that almost no adhesion error occurs and workability is improved.
【図１】 本発明の方法を説明する斜視図。FIG. 1 is a perspective view illustrating a method of the present invention.
【図２】 本発明の方法で光源を導光板に接合させた状
態を示す断面図。FIG. 2 is a sectional view showing a state where a light source is joined to a light guide plate by the method of the present invention.
【図３】 本発明の方法で光源を導光板に接合させた状
態を示す断面図。FIG. 3 is a sectional view showing a state where a light source is joined to a light guide plate by the method of the present invention.
【図４】 従来の方法で光源を導光板に接合させた状態
を示す断面図。FIG. 4 is a cross-sectional view showing a state in which a light source is joined to a light guide plate by a conventional method.
１、１１・・・・導光板 ２、１２・・・・ＬＥＤランプ ３、３’１３・・・・支持体 ４・・・・透明弾性体 ５・・・・導光板の端面 ６・・・・凹部 1, 11,... Light guide plate 2, 12,... LED lamp 3, 3'13,... Support 4, transparent elastic body 5,.・ Recess
Claims (3)
の端面と接合され支持体に複数個のＬＥＤランプが前記
導光板の端面方向に沿って装着されてなる光源とを有す
る面光源であって、前記導光板にはその端面に沿って透
明な弾性体を有する両面テープが設けられていると共に
該両面テープを介して前記導光板の端面と光源を構成す
る複数のＬＥＤランプの先端とが接合してなることを特
徴とする面光源。 1. A light guide plate whose plane is a surface light source, and the light guide plate
A plurality of LED lamps on the support
With a light source mounted along the end face direction of the light guide plate
Surface light source, wherein the light guide plate is transparent along its end surface.
A double-sided tape with a clear elastic body is provided
An end face of the light guide plate and a light source are formed via the double-sided tape.
That the tip of multiple LED lamps
Area light source
ボネートであると共に前記両面テープが、シリコン樹
脂、シリコンゴム、アクリルフォームのいずれかである
ことを特徴とする請求項１に記載の面光源。 2. The light guide plate is made of acrylic or polycarbonate.
The double-sided tape is made of silicone resin
Grease, silicone rubber, or acrylic foam
The surface light source according to claim 1, wherein:
れてなる光源と、導光板の端面とを接合する方法であっ
て、前記支持体に装着された複数のＬＥＤランプの先端
と導光板の端面とを導光板の端面に沿って設けられた透
明な弾性体を有する両面テープを介して接合することを
特徴とする光源と導光板との接合方法。 3. A plurality of LED lamps are mounted on a support.
This method is to join the light source and the end face of the light guide plate.
The tip of the plurality of LED lamps mounted on the support
And the end face of the light guide plate.
Bonding via a double-sided tape with a clear elastic body
Characteristic method of joining light source and light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18254395A JP2932471B2 (en) | 1995-06-01 | 1995-07-19 | Surface light source and method for bonding light source to light guide plate |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13507095 | 1995-06-01 | ||
| JP7-135070 | 1995-06-01 | ||
| JP18254395A JP2932471B2 (en) | 1995-06-01 | 1995-07-19 | Surface light source and method for bonding light source to light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0950704A JPH0950704A (en) | 1997-02-18 |
| JP2932471B2 true JP2932471B2 (en) | 1999-08-09 |
Family
ID=26469017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18254395A Expired - Fee Related JP2932471B2 (en) | 1995-06-01 | 1995-07-19 | Surface light source and method for bonding light source to light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2932471B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009122674A1 (en) * | 2008-03-31 | 2009-10-08 | 株式会社巴川製紙所 | Rubber member, adhesive connecting member and optical connecting structure |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6299338B1 (en) | 1998-11-30 | 2001-10-09 | General Electric Company | Decorative lighting apparatus with light source and luminescent material |
| JP4489423B2 (en) | 2003-12-26 | 2010-06-23 | シャープ株式会社 | Backlight and liquid crystal display device |
| JP2005227339A (en) | 2004-02-10 | 2005-08-25 | Seiko Epson Corp | Light source device, method for manufacturing light source device, and projector |
| JP4655605B2 (en) * | 2004-12-02 | 2011-03-23 | 日立化成工業株式会社 | Surface light source device and method of assembling surface light source device |
| JP4793572B2 (en) | 2006-10-06 | 2011-10-12 | ミネベア株式会社 | Surface lighting device |
| JP5080999B2 (en) * | 2008-01-25 | 2012-11-21 | 日立アプライアンス株式会社 | Light source device |
| JP2010092624A (en) * | 2008-10-03 | 2010-04-22 | Fujifilm Corp | Planar lighting device |
| JP2010135297A (en) * | 2008-11-04 | 2010-06-17 | Fujifilm Corp | Surface lighting device |
| DE102009019623A1 (en) * | 2009-04-30 | 2010-12-02 | Saint-Gobain Sekurit Deutschland Gmbh & Co. Kg | disk assembly |
| JP2012104312A (en) * | 2010-11-09 | 2012-05-31 | Alps Electric Co Ltd | Illumination device and method of manufacturing the same |
| WO2013179827A1 (en) * | 2012-05-31 | 2013-12-05 | シャープ株式会社 | Illumination device, display device, and television receiver device |
| US20150109814A1 (en) * | 2013-10-17 | 2015-04-23 | Nanosys, Inc. | Light emitting diode (led) devices |
-
1995
- 1995-07-19 JP JP18254395A patent/JP2932471B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009122674A1 (en) * | 2008-03-31 | 2009-10-08 | 株式会社巴川製紙所 | Rubber member, adhesive connecting member and optical connecting structure |
| US8611712B2 (en) | 2008-03-31 | 2013-12-17 | Tomoegawa Co., Ltd. | Rubber member, adhesive connecting member, and optical connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0950704A (en) | 1997-02-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2932471B2 (en) | Surface light source and method for bonding light source to light guide plate | |
| JP3114805B2 (en) | Planar light source, display backlight using the same, and illuminated operation switch | |
| CN104090407B (en) | Display device, the manufacture method of display device and its manufacturing equipment | |
| JP3931355B2 (en) | Planar light source | |
| KR100404352B1 (en) | Area type light emitting device and manufacturing method thereof | |
| KR101008971B1 (en) | Led flat lighting | |
| CN106444151B (en) | Backlight module and liquid crystal display | |
| CN111312087B (en) | Splicing screen connecting structure and display device | |
| CN216118308U (en) | Backlight module and display device | |
| CN110346957A (en) | Liquid crystal module and preparation method thereof | |
| TWI289712B (en) | Light emitting panel assemblies | |
| JPH08262438A (en) | Back light structure for liquid crystal display device | |
| JP2004006081A (en) | Surface light source equipment and method of manufacturing it | |
| JP2021128927A (en) | Diffusion lens and lamp including the same | |
| CN101868670A (en) | Illuminating apparatus and method for manufacturing illuminating apparatus | |
| CN111856812A (en) | Surface light source module for backlight device and manufacturing method thereof | |
| CN105003863A (en) | Manufacturing method of area light source device, area light source device, displaying device, and electronic device | |
| CN209928187U (en) | Backlight module and display panel | |
| CN108717240A (en) | A kind of Rimless liquid crystal display die set and liquid crystal display | |
| CN114779525A (en) | Backlight module, preparation method thereof and display device | |
| CN114267261A (en) | Splicing type backlight module, assembling method thereof and splicing display device | |
| JPH05313161A (en) | Liquid crystal display device | |
| KR20030081971A (en) | Backlight Unit And Method Of Fabricating A Reflecting Plate Thereof | |
| JP2016139559A (en) | Planar luminaire | |
| CN107870484B (en) | Liquid crystal display device and side light type backlight module thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090528 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090528 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090528 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100528 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100528 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110528 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110528 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120528 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120528 Year of fee payment: 13 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130528 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130528 Year of fee payment: 14 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140528 Year of fee payment: 15 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |