JPH05323315A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH05323315A JPH05323315A JP4131013A JP13101392A JPH05323315A JP H05323315 A JPH05323315 A JP H05323315A JP 4131013 A JP4131013 A JP 4131013A JP 13101392 A JP13101392 A JP 13101392A JP H05323315 A JPH05323315 A JP H05323315A
- Authority
- JP
- Japan
- Prior art keywords
- crystal display
- liquid crystal
- display panel
- display device
- heat
- 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.)
- Granted
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、導光板に導いた照光ラ
ンプの光をバックライトとして液晶表示パネルに照射す
る液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device for irradiating a liquid crystal display panel with light from an illumination lamp guided to a light guide plate as a backlight.
【０００２】[0002]
【従来の技術】従来より、液晶表示パネルの背面側に導
光板と冷陰極管などの照光ランプを配置し、導光板の片
面から出射される光を液晶表示パネルのバックライトと
して用いる液晶表示装置が広く用いられている。2. Description of the Related Art Conventionally, a liquid crystal display device in which a light guide plate and an illumination lamp such as a cold cathode tube are arranged on the back side of a liquid crystal display panel and light emitted from one surface of the light guide plate is used as a backlight of the liquid crystal display panel. Is widely used.
【０００３】図５は、従来より知られているこの種の液
晶表示装置の一例を示す要部断面図であって、１は液晶
表示パネル、６は導光板、８は冷陰極管を示している。
液晶表示パネル１は、上部電極基板２と下部電極基板３
との間に液晶を封入し、両電極基板２，３の表面にそれ
ぞれ偏光板４，５を貼着してなる公知のものが用いられ
る。この液晶表示パネル１の背面側（下部電極基板３
側）には、下面に反射シート１１が被着された透光性材
料からなる導光板６が配置されており、この導光板６の
端面６ａと対向する位置には、導光板６との対向部を除
く全周が遮光体７に覆われた冷陰極管８が配置されてい
る。これら液晶表示パネル１、導光板６、冷陰極管８
は、プラスチック製のモールドケース９上に搭載され、
液晶表示パネル１の表面側より被着された金枠１０にて
一体に固定されている。金枠１０は、液晶表示パネル１
の周縁部を支持しており、該金枠１０の開口１０ａ内が
液晶表示パネル１の表示領域となつている。なお、液晶
表示パネル１には、これを駆動するための回路が形成さ
れたプリント配線板が接続されるが、その構成は本発明
の要旨ではなく、かつ公知に属する事項であるので、図
示及び説明を省略する。FIG. 5 is a cross-sectional view of an essential part showing an example of a conventionally known liquid crystal display device of this type. 1 is a liquid crystal display panel, 6 is a light guide plate, and 8 is a cold cathode tube. There is.
The liquid crystal display panel 1 includes an upper electrode substrate 2 and a lower electrode substrate 3.
There is used a known one in which liquid crystal is sealed between the two electrodes and polarizing plates 4 and 5 are attached to the surfaces of both electrode substrates 2 and 3, respectively. The back side of the liquid crystal display panel 1 (lower electrode substrate 3
On the side), a light guide plate 6 made of a translucent material having a reflection sheet 11 adhered to the lower surface thereof is arranged. A cold-cathode tube 8 whose entire circumference except for a part is covered with a light shield 7 is arranged. These liquid crystal display panel 1, light guide plate 6, cold cathode tube 8
Is mounted on a plastic molded case 9,
The liquid crystal display panel 1 is integrally fixed by a metal frame 10 attached from the front surface side. The gold frame 10 is the liquid crystal display panel 1.
Of the metal frame 10 and the inside of the opening 10a of the metal frame 10 serves as a display area of the liquid crystal display panel 1. A printed wiring board having a circuit for driving the liquid crystal display panel 1 is connected to the liquid crystal display panel 1. However, since the configuration is not a gist of the present invention and is a matter known to the public, The description is omitted.
【０００４】冷陰極管８から発せられた光１２は、端面
６ａから導光板６内に入射され、導光板６内で乱反射さ
れた後に導光板６の前方へ出射されるので、この明るい
出射光を液晶表示パネル１のバックライトとして利用す
ることができる。また、冷陰極管８から側面６ａに入射
される光は導光板６の面方向に沿つて進もうとする指向
性を有しているので、この入射光を該導光板６の他側面
にまで行き渡らせることができ、よって冷陰極管８から
離れた個所でも導光板６から前方へ明るい光を出射させ
ることができる。なお、導光板６が大面積の場合には、
その両側に冷陰極管８を配置したり、片側に２本の冷陰
極管８を配置するなどの工夫がなされている。The light 12 emitted from the cold-cathode tube 8 enters the light guide plate 6 from the end face 6a, is diffusely reflected in the light guide plate 6, and then is emitted to the front of the light guide plate 6. Can be used as a backlight of the liquid crystal display panel 1. Further, since the light incident on the side surface 6 a from the cold cathode tube 8 has a directivity to travel along the surface direction of the light guide plate 6, this incident light reaches the other side surface of the light guide plate 6. Therefore, bright light can be emitted forward from the light guide plate 6 even at a location away from the cold cathode tube 8. When the light guide plate 6 has a large area,
The cold cathode tubes 8 are arranged on both sides thereof, and two cold cathode tubes 8 are arranged on one side.
【０００５】ところで、この種の液晶表示装置において
は、照光ランプから生じる輻射熱を効率的に放熱するこ
とが特に重要である。すなわち、一般に、液晶表示パネ
ルの色むらを回避するためにはパネル表面の温度差を４
℃以内にする必要があるとされているが、比較的発熱が
少ない冷陰極管を用いた場合にも、管表面の温度が輝度
に応じて４０〜９０℃になるため、液晶表示パネル１の
表面温度が、冷陰極管８側の縁部１ａで他の部分よりも
５℃程度高くなりやすく、その影響で液晶表示パネル１
に色むらを生じやすいからである。かかる不都合を回避
するため、従来においては、前記反射シート１１とし
て、例えばアルミニウムシートなどの熱伝導率が高いも
のを導光板６に被着し、該アルミニウムシートを通して
照光ランプの輻射熱を放熱する、一端がモールドケー
ス９内の照光ランプ設定部近傍に配置され、他端がモー
ルドケース９外に導出された放熱板をモールドケース９
と一体成形し、該放熱板を通して照光ランプの輻射熱を
放熱する、といった手段がとられている。By the way, in this type of liquid crystal display device, it is particularly important to efficiently dissipate the radiant heat generated from the illumination lamp. That is, generally, in order to avoid color unevenness of the liquid crystal display panel, the temperature difference on the panel surface is set to 4
It is said that it is necessary to keep the temperature within the range of 0 ° C, but even when a cold cathode tube that generates relatively little heat is used, the temperature of the tube surface becomes 40 to 90 ° C depending on the brightness, so that the liquid crystal display panel 1 has The surface temperature is likely to be higher by about 5 ° C. at the edge portion 1a on the cold cathode tube 8 side than at other portions, and due to this, the liquid crystal display panel 1 is affected.
This is because color unevenness is likely to occur on the. In order to avoid such inconvenience, conventionally, as the reflection sheet 11, for example, a sheet having a high thermal conductivity such as an aluminum sheet is attached to the light guide plate 6, and the radiant heat of the illumination lamp is radiated through the aluminum sheet. Is disposed in the mold case 9 in the vicinity of the illumination lamp setting portion, and the other end of the heat dissipation plate is guided to the outside of the mold case 9.
Is integrally formed with the heat radiation plate to radiate the radiant heat of the illumination lamp.
【０００６】[0006]
【発明が解決しようとする課題】ところが、前記放熱手
段のうちの前者は、熱伝導率が低いプラスチック製のモ
ールドケース９の内面に放熱用部材であるアルミニウム
シートが配置されているので、放熱効率が低く、充分な
放熱効果を得られない。一方、後者は、放熱効果は高い
が、モールドケース９の製造コストが高く、液晶表示装
置がコスト高になるといった不都合がある。However, in the former of the heat dissipation means, since the aluminum sheet which is a heat dissipation member is arranged on the inner surface of the plastic molded case 9 having a low heat conductivity, the heat dissipation efficiency is improved. Is too low to obtain sufficient heat dissipation effect. On the other hand, the latter has a high heat dissipation effect, but has a disadvantage that the manufacturing cost of the mold case 9 is high and the cost of the liquid crystal display device is high.
【０００７】本発明はこのような事情に鑑みてなされた
もので、その目的は、安価にして照光ランプの輻射熱に
起因する液晶表示パネルの色むらを抑制しやすい液晶表
示装置を提供することにある。The present invention has been made in view of the above circumstances, and an object thereof is to provide a liquid crystal display device that is inexpensive and can easily suppress color unevenness of a liquid crystal display panel due to radiant heat of an illumination lamp. is there.
【０００８】[0008]
【課題を解決するための手段】本発明は、前記の目的を
達成するため、液晶表示パネルと、該液晶表示パネルの
背面側に配置された導光板と、該導光板の端面側に配置
された照光ランプと、これらの部材を一体に保持するモ
ールドケースとを備えた液晶表示装置において、前記モ
ールドケースの照光ランプ配置部に透孔を開設し、該透
孔内に、前記照光ランプからの輻射熱をモールドケース
外に放熱するための放熱板を着脱可能に被着した。In order to achieve the above object, the present invention provides a liquid crystal display panel, a light guide plate arranged on the back side of the liquid crystal display panel, and an end face side of the light guide plate. In a liquid crystal display device including an illuminated lamp and a molded case that integrally holds these members, a through hole is opened in an illuminated lamp disposition portion of the molded case, and the light from the illuminated lamp is provided in the through hole. A heat radiation plate for radiating radiant heat to the outside of the mold case was detachably attached.
【０００９】冷陰極管などの照光ランプは、長さ方向の
温度分布が一様ではなく、両端部分が高温に、中央部分
がやや低温になる。したがって、必ずしも前記の透孔及
び放熱板を照光ランプの長さ方向全体にわたって設ける
必要はなく、照光ランプの両端部分と対向する部分にの
みこれを設けても、液晶表示パネルの色むら防止に効果
がある。また、前記導光板の背面に、反射シートと兼用
の放熱シートを設けると、前記透孔及び放熱板の放熱作
用と相俟って、より放熱効率が高くなり、液晶表示パネ
ルの色むら防止に効果がある。In an illumination lamp such as a cold-cathode tube, the temperature distribution in the length direction is not uniform, and both ends have a high temperature and the central part has a slightly low temperature. Therefore, it is not always necessary to provide the through holes and the heat dissipation plate in the entire length direction of the illumination lamp, and even if they are provided only in the portions facing both end portions of the illumination lamp, it is effective in preventing color unevenness of the liquid crystal display panel. There is. Further, if a heat dissipation sheet that also serves as a reflection sheet is provided on the back surface of the light guide plate, the heat dissipation efficiency of the liquid crystal display panel is further improved in combination with the heat dissipation effect of the through holes and the heat dissipation plate, and the color unevenness of the liquid crystal display panel is prevented. effective.
【００１０】[0010]
【作用】上記手段によると、前記照光ランプからの輻射
熱が直接透孔内に被着された放熱板に伝わり、モールド
ケース外に放熱されるので、放熱効率が非常に高く、液
晶表示パネルの色むらを効果的に防止できる。また、放
熱板を透孔内に着脱可能に被着するようになすと、放熱
板とモールドケースとを別体に製造できるので、これら
両部材を一体成形する場合に比べて製造が格段に容易に
なり、安価に実施できる。According to the above means, the radiant heat from the illuminating lamp is directly transmitted to the heat radiating plate attached in the through hole and radiated to the outside of the mold case, so that the heat radiating efficiency is very high and the color of the liquid crystal display panel is improved. The unevenness can be effectively prevented. Also, if the heat sink is detachably attached to the through hole, the heat sink and the mold case can be manufactured separately, so that the manufacturing is significantly easier than the case where both these members are integrally molded. And can be implemented at low cost.
【００１１】[0011]
【実施例】以下、本発明の一実施例を図１〜図３に基づ
いて説明する。図１は本実施例に係る液晶表示装置の要
部断面図、図２は本実施例に係る液晶表示装置の要部底
面図、図３は放熱板の斜視図である。これらの図におい
て、２１は透孔、２２は係止爪、２３は放熱板を示し、
その他前出の図５と対応する部分には同一の符号が付し
てある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 is a cross-sectional view of a main part of a liquid crystal display device according to this embodiment, FIG. 2 is a bottom view of a main part of the liquid crystal display device according to this embodiment, and FIG. 3 is a perspective view of a heat dissipation plate. In these figures, 21 is a through hole, 22 is a locking claw, and 23 is a heat sink,
The other parts corresponding to those in FIG. 5 are designated by the same reference numerals.
【００１２】図１及び図２に示すように、本実施例の液
晶表示装置は、モールドケース９の底板９ａの冷陰極管
８の設定部分に、冷陰極管８の一端近傍から他端近傍に
至る幅の透孔２１を開設すると共に、該透孔２１内にこ
れとほぼ同幅の放熱板２３を被着したことを特徴とす
る。As shown in FIGS. 1 and 2, in the liquid crystal display device of this embodiment, the bottom plate 9a of the mold case 9 has a portion where the cold cathode tubes 8 are set, from one end of the cold cathode tubes 8 to the other end thereof. It is characterized in that a through hole 21 having a full width is opened and a heat radiating plate 23 having substantially the same width as the through hole 21 is attached to the inside of the through hole 21.
【００１３】モールドケース９は、底板９ａと、該底板
９ａの周端部から垂直上向きに起立された周壁９ｂとを
もって構成されており、前記周壁９ｂの内面と接する部
分から前記導光板６の端面６ａと対応する部分までの間
に、前記透孔２１が開設されている。また、前記底板９
ａの下面には、前記周壁９ｂ側に向けて突出する係止爪
２２が突設されている。The mold case 9 is composed of a bottom plate 9a and a peripheral wall 9b which is erected vertically upward from the peripheral end of the bottom plate 9a. The through hole 21 is opened up to a portion corresponding to 6a. Also, the bottom plate 9
On the lower surface of a, a locking claw 22 is provided so as to project toward the peripheral wall 9b side.
【００１４】放熱板２３は、図３に示すように、主部２
３ａと、該主部２３ａの一端から垂直上向きに起立され
た起立部２３ｂと、起立部２３ｂの上端から水平方向外
向きに突設された係止部２３ｃとからなる。主部２３ａ
は、前記周壁９ｂの内面から前記係止爪２２の内面に達
する長さに形成されており、その幅は、前記透孔２１の
開口幅よりもやや幅狭に形成される。また、起立部２３
ｂは、前記周壁９ｂの高さと略等しい高さに形成され
る。さらに、係止部２３ｃは、前記周壁９ｂの上面に着
脱自在に係合可能な大きさに形成される。該放熱板２３
は、金属、セラミックス、高分子材料など任意の材料を
もって形成可能であるが、成形が容易であることなどか
ら、例えば富士高分子工業株式会社製の「サーコン」な
どで代表される熱伝導性及び難燃性に優れたシリコーン
ラバーが特に好適である。As shown in FIG. 3, the heat dissipation plate 23 has a main portion 2
3a, a standing portion 23b that stands vertically upward from one end of the main portion 23a, and a locking portion 23c that projects horizontally outward from the upper end of the standing portion 23b. Main part 23a
Is formed to have a length reaching the inner surface of the locking claw 22 from the inner surface of the peripheral wall 9b, and the width thereof is formed to be slightly narrower than the opening width of the through hole 21. Also, the standing portion 23
b is formed to have a height substantially equal to the height of the peripheral wall 9b. Further, the locking portion 23c is formed in a size that can be detachably engaged with the upper surface of the peripheral wall 9b. The heat dissipation plate 23
Can be formed of any material such as metal, ceramics, and polymer material, but since it is easy to mold, thermal conductivity and thermal conductivity represented by "Surcon" manufactured by Fuji Polymer Co., Ltd. Silicone rubber having excellent flame retardancy is particularly suitable.
【００１５】前記放熱板２３は、図１に示すように、主
部２３ａの先端部を前記係止爪２２に係合し、起立部２
３ｂ及び係止部２３ｃを前記冷陰極管８と周壁９ｂとの
間に挿通し、係止部２３ｃを前記周壁９ｂの上面に係合
することによって、透孔２１内に被着される。なお、こ
れと逆の作業、すなわち係止部２３ｃを前記周壁９ｂの
上面から離脱し、起立部２３ｂ及び係止部２３ｃを前記
冷陰極管８と周壁９ｂとの間から離脱し、主部２３ａの
先端部を前記係止爪２２から離脱することによって、放
熱板２３をモールドケース９から取り外すことができ
る。As shown in FIG. 1, the heat radiating plate 23 engages the engaging claw 22 at the tip of the main portion 23a so that the rising portion 2 is raised.
3b and the engaging portion 23c are inserted between the cold cathode fluorescent lamp 8 and the peripheral wall 9b, and the engaging portion 23c is engaged with the upper surface of the peripheral wall 9b to be attached in the through hole 21. The reverse operation, that is, the engaging portion 23c is removed from the upper surface of the peripheral wall 9b, the standing portion 23b and the engaging portion 23c are removed from between the cold cathode tube 8 and the peripheral wall 9b, and the main portion 23a is removed. The heat dissipation plate 23 can be removed from the mold case 9 by removing the tip end of the heat release plate 23 from the locking claw 22.
【００１６】前記実施例の液晶表示装置は、モールドケ
ース９の冷陰極管配置部に透孔２１を開設し、該透孔２
１内に冷陰極管８からの輻射熱をモールドケース９外に
放熱するための放熱板２３を被着したので、冷陰極管８
からの輻射熱が直接放熱板２３に伝わり、またその熱が
モールドケース９外に直接放熱されるので、輻射熱の放
熱効率が非常に高く、液晶表示パネル１の色むらを効果
的に防止できる。また、放熱板２３を透孔２１内に着脱
可能に被着したので、これらの部材を一体成形する場合
に比べて、安価に実施できる。In the liquid crystal display device of the above-mentioned embodiment, the through hole 21 is formed in the cold cathode tube arrangement portion of the mold case 9, and the through hole 2 is formed.
Since the heat radiation plate 23 for radiating the radiant heat from the cold cathode fluorescent lamp 8 to the outside of the mold case 9 is attached inside 1, the cold cathode fluorescent lamp 8
Since the radiant heat from the radiant heat is directly transmitted to the heat radiating plate 23 and the heat is radiated directly to the outside of the mold case 9, the radiation efficiency of the radiant heat is very high, and the uneven color of the liquid crystal display panel 1 can be effectively prevented. Further, since the heat dissipation plate 23 is detachably attached to the through hole 21, it can be carried out at a lower cost than the case where these members are integrally molded.
【００１７】なお、前記実施例においては、バックライ
ト用の光源として冷陰極管８を用いたが、他の光源を用
いることももちろん可能である。Although the cold cathode tube 8 is used as the light source for the backlight in the above embodiment, it is of course possible to use other light sources.
【００１８】また、前記実施例においては、導光板６の
背面に反射シート１１を設けたが、反射シートと兼用の
放熱シートを設けることによって、冷陰極管８からの輻
射熱の放熱効率をより高めることもできる。Further, in the above-described embodiment, the reflection sheet 11 is provided on the back surface of the light guide plate 6, but by providing the heat radiation sheet also serving as the reflection sheet, the heat radiation efficiency of the radiation heat from the cold cathode tubes 8 is further enhanced. You can also
【００１９】また、本発明の要旨は、モールドケースの
照光ランプ配置部に透孔を開設し、該透孔内に、照光ラ
ンプからの輻射熱をモールドケース外に放熱するための
放熱板を着脱可能に被着したことにあるのであって、透
孔及び放熱板の形状、構造、数量、材質については、前
記実施例に拘らず、本発明の要旨を変更しない範囲で任
意に設計することができる。例えば、図４に示すよう
に、照光ランプ（冷陰極管８）の両端と対応する部分に
２つの透孔２１を開設し、夫々に放熱板２３を被着する
という構成にすることもできる。冷陰極管などの照光ラ
ンプは、長さ方向の温度分布が一様ではなく、両端部分
が高温に、中央部分がやや低温になるので、このような
構成にしても、液晶表示パネルの色むら防止に効果があ
る。Further, the gist of the present invention is that a through hole is formed in the illuminated lamp arrangement portion of the mold case, and a heat radiating plate for radiating the radiant heat from the illuminated lamp to the outside of the mold case can be attached and detached in the through hole. The shape, structure, number, and material of the through holes and the heat dissipation plate can be arbitrarily designed within the range not changing the gist of the present invention regardless of the above-mentioned embodiment. .. For example, as shown in FIG. 4, two through holes 21 may be formed in a portion corresponding to both ends of the illumination lamp (cold cathode tube 8) and a heat radiating plate 23 may be attached to each of them. In an illumination lamp such as a cold cathode tube, the temperature distribution in the length direction is not uniform, and both ends are hot and the center is a little cold. Effective in prevention.
【００２０】[0020]
【発明の効果】以上説明したように、本発明によれば、
モールドケースの照光ランプ配置部に透孔を開設し、該
透孔内に前記照光ランプからの輻射熱をモールドケース
外に放熱するための放熱板を被着したので、輻射熱の放
熱効率が非常に高く、液晶表示パネルの色むらを効果的
に防止できる。また、放熱板を透孔内に着脱可能に被着
したので、放熱板とモールドケースとの製造が容易にな
り、液晶表示装置の製造コストを低減できる。As described above, according to the present invention,
Since a through hole is opened in the illuminated lamp arrangement part of the mold case, and a radiation plate for radiating the radiant heat from the illuminating lamp to the outside of the mold case is attached to the through hole, the radiation efficiency of the radiant heat is very high. It is possible to effectively prevent color unevenness of the liquid crystal display panel. Further, since the heat sink is detachably attached to the through hole, the heat sink and the mold case can be easily manufactured, and the manufacturing cost of the liquid crystal display device can be reduced.
【図１】実施例に係る液晶表示装置の要部断面図であ
る。FIG. 1 is a cross-sectional view of a main part of a liquid crystal display device according to an example.
【図２】実施例に係る液晶表示装置の要部底面図であ
る。FIG. 2 is a bottom view of a main part of the liquid crystal display device according to the example.
【図３】放熱板の斜視図である。FIG. 3 is a perspective view of a heat dissipation plate.
【図４】他の実施例に係る液晶表示装置の要部背面図で
ある。FIG. 4 is a rear view of a main part of a liquid crystal display device according to another embodiment.
【図５】従来の液晶表示装置の要部断面図である。FIG. 5 is a cross-sectional view of a main part of a conventional liquid crystal display device.
１ 液晶表示パネル ６ 導光板 ８ 冷陰極管 ９ モールドケース １１ 反射シート ２１ 透孔 ２２ 係止爪 ２３ 放熱板 1 Liquid crystal display panel 6 Light guide plate 8 Cold cathode tube 9 Mold case 11 Reflective sheet 21 Through hole 22 Locking claw 23 Heat sink
Claims (3)
背面側に配置された導光板と、該導光板の端面側に配置
された照光ランプと、これらの部材を一体に保持するモ
ールドケースとを備えた液晶表示装置において、前記モ
ールドケースの照光ランプ配置部に透孔を開設し、該透
孔内に、前記照光ランプからの輻射熱をモールドケース
外に放熱するための放熱板を着脱可能に被着したことを
特徴とする液晶表示装置。1. A liquid crystal display panel, a light guide plate arranged on the back side of the liquid crystal display panel, an illumination lamp arranged on the end face side of the light guide plate, and a mold case integrally holding these members. In the liquid crystal display device including the above, a through hole is opened in the illumination lamp arrangement portion of the mold case, and a heat radiating plate for radiating the radiant heat from the illumination lamp to the outside of the mold case can be attached to and removed from the through hole. A liquid crystal display device characterized by being attached.
端部と対向する部分にのみ前記透孔及び放熱板を設けた
ことを特徴とする液晶表示装置。2. The liquid crystal display device according to claim 1, wherein the through hole and the heat dissipation plate are provided only in a portion facing both ends of the illumination lamp.
に、反射シートと兼用の放熱シートを設けたことを特徴
とする液晶表示装置。3. The liquid crystal display device according to claim 1, wherein a heat dissipation sheet that also serves as a reflection sheet is provided on the back surface of the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4131013A JP2823427B2 (en) | 1992-05-22 | 1992-05-22 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4131013A JP2823427B2 (en) | 1992-05-22 | 1992-05-22 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05323315A true JPH05323315A (en) | 1993-12-07 |
| JP2823427B2 JP2823427B2 (en) | 1998-11-11 |
Family
ID=15047949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4131013A Expired - Lifetime JP2823427B2 (en) | 1992-05-22 | 1992-05-22 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2823427B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0868999A (en) * | 1994-08-31 | 1996-03-12 | Nec Corp | Back light device for liquid crystal display |
| JP2002229022A (en) * | 2001-02-02 | 2002-08-14 | Sony Corp | Liquid crystal display device and backlight device for liquid crystal display element |
| KR100441843B1 (en) * | 1997-08-12 | 2004-12-17 | 삼성전자주식회사 | Backlight assembly of a liquid crystal display device, specially in relation to effectively emitting heat generated from a lamp by changing a shape of a mold frame |
| KR100485011B1 (en) * | 1997-09-13 | 2005-08-31 | 삼성전자주식회사 | LCD Display |
| KR100526000B1 (en) * | 1998-05-13 | 2006-01-12 | 삼성전자주식회사 | Heat dissipation structure of backlight assembly for LCD |
| KR100883097B1 (en) * | 2002-02-08 | 2009-02-11 | 삼성전자주식회사 | Liquid crystal display apparatus |
| JP2009229900A (en) * | 2008-03-24 | 2009-10-08 | Furukawa Electric Co Ltd:The | Heat sink for thin display device |
| US8125586B2 (en) | 2008-05-20 | 2012-02-28 | Samsung Electronics Co., Ltd. | Back light assembly and display device having the same |
| KR101238873B1 (en) * | 2005-04-15 | 2013-03-08 | 삼성디스플레이 주식회사 | Heat condunction member and liquid crystal display having the same |
-
1992
- 1992-05-22 JP JP4131013A patent/JP2823427B2/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0868999A (en) * | 1994-08-31 | 1996-03-12 | Nec Corp | Back light device for liquid crystal display |
| KR100441843B1 (en) * | 1997-08-12 | 2004-12-17 | 삼성전자주식회사 | Backlight assembly of a liquid crystal display device, specially in relation to effectively emitting heat generated from a lamp by changing a shape of a mold frame |
| KR100485011B1 (en) * | 1997-09-13 | 2005-08-31 | 삼성전자주식회사 | LCD Display |
| KR100526000B1 (en) * | 1998-05-13 | 2006-01-12 | 삼성전자주식회사 | Heat dissipation structure of backlight assembly for LCD |
| JP2002229022A (en) * | 2001-02-02 | 2002-08-14 | Sony Corp | Liquid crystal display device and backlight device for liquid crystal display element |
| KR100883097B1 (en) * | 2002-02-08 | 2009-02-11 | 삼성전자주식회사 | Liquid crystal display apparatus |
| KR101238873B1 (en) * | 2005-04-15 | 2013-03-08 | 삼성디스플레이 주식회사 | Heat condunction member and liquid crystal display having the same |
| JP2009229900A (en) * | 2008-03-24 | 2009-10-08 | Furukawa Electric Co Ltd:The | Heat sink for thin display device |
| US8125586B2 (en) | 2008-05-20 | 2012-02-28 | Samsung Electronics Co., Ltd. | Back light assembly and display device having the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2823427B2 (en) | 1998-11-11 |
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