JPH07325302A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH07325302A JPH07325302A JP11942794A JP11942794A JPH07325302A JP H07325302 A JPH07325302 A JP H07325302A JP 11942794 A JP11942794 A JP 11942794A JP 11942794 A JP11942794 A JP 11942794A JP H07325302 A JPH07325302 A JP H07325302A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- liquid crystal
- crystal display
- reflection plate
- 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
Links
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は液晶表示装置に係り、特
にその照明装置の構成に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, and more particularly to the structure of a lighting device thereof.
【０００２】[0002]
【従来の技術】液晶表示装置は、数字や文字および記号
などのキャラクターディスプレイとして、薄型で軽量の
低消費電力の特徴から多用されている。液晶表示そのも
のは、電圧印加有無による液晶分子の形態を制御するこ
とによって、透過光や反射光を利用して識別するもので
ある。2. Description of the Related Art Liquid crystal display devices are widely used as character displays for numbers, characters and symbols because of their thinness, light weight and low power consumption. The liquid crystal display itself discriminates by utilizing transmitted light or reflected light by controlling the shape of liquid crystal molecules depending on whether or not a voltage is applied.
【０００３】しかしながら、液晶表示装置はその動作原
理上は自ら発光しないので、暗い場所で表示を識別する
ことはできない。また、同様に明るい場所であってもコ
ントラストの問題から表示の識別には一定の制限を受け
る。そこで、これらの問題に対して、液晶表示パネルと
照明装置を組み合わせることにより視認性を高めた液晶
表示装置が用いられている。However, since the liquid crystal display device does not emit light by its operating principle, the display cannot be identified in a dark place. Similarly, even in a bright place, the display is subject to certain restrictions due to the problem of contrast. Therefore, in order to solve these problems, a liquid crystal display device is used in which visibility is improved by combining a liquid crystal display panel and a lighting device.
【０００４】例えば、液晶表示パネルと照明装置を組み
合わせ、照明装置からの光を液晶表示パネルを介して透
過させることにより視認性を高めた液晶表示装置が用い
られている。この場合、照明装置を液晶表示パネルの表
示面の裏側に配置するバックライト方式と液晶表示パネ
ルの側面から導光するサイドライト方式が用いられてい
る。For example, there is used a liquid crystal display device in which a liquid crystal display panel and an illuminating device are combined and light from the illuminating device is transmitted through the liquid crystal display panel to improve visibility. In this case, a backlight method in which the lighting device is arranged on the back side of the display surface of the liquid crystal display panel and a side light method in which light is guided from the side surface of the liquid crystal display panel are used.
【０００５】図２にこのようなサイドライト方式の照明
装置の概略構成を示す。この例では、細い蛍光管などか
らなる光源１が光源保持部３内に収納配置されている。
さらに光源１の周囲には少なくともその内面が光反射シ
ートからなる光源反射板４が配置されている。FIG. 2 shows a schematic structure of such a sidelight type illumination device. In this example, the light source 1 including a thin fluorescent tube is housed in the light source holder 3.
Further, around the light source 1, a light source reflection plate 4 whose inner surface is a light reflection sheet is arranged.
【０００６】この細長い光源１の軸方向と平行に導光体
２の側面部が近接対向して配置される。また、導光体２
の一方の面には光反射板８が、他方の面には光拡散板５
が配置される。The side surfaces of the light guide 2 are arranged close to each other and parallel to the axial direction of the elongated light source 1. In addition, the light guide 2
The light reflection plate 8 is provided on one surface and the light diffusion plate 5 is provided on the other surface.
Are placed.
【０００７】また、光源１を収納する光源保持部３は同
時に導光体２の側縁部を光反射板８、光拡散板５および
光源反射板４の端部とともに弾性力などで挟み込むよう
に保持している。Further, the light source holding portion 3 for accommodating the light source 1 simultaneously holds the side edge portion of the light guide body 2 together with the end portions of the light reflecting plate 8, the light diffusing plate 5 and the light source reflecting plate 4 by elastic force or the like. keeping.
【０００８】このようなサイドライト方式の照明装置
は、駆動回路を含む液晶表示パネル７を組み込んだベゼ
ル（図示せず）内に導光体２の光拡散板５の面側が液晶
表示パネル７と対向するようにスペーサ６を介して挿入
保持される。In such a sidelight type illumination device, the surface side of the light diffusing plate 5 of the light guide 2 is the liquid crystal display panel 7 in a bezel (not shown) incorporating the liquid crystal display panel 7 including a drive circuit. Inserted and held via the spacer 6 so as to face each other.
【０００９】このような照明装置において、光源１から
照射された光は光源反射板４の内面の反射面で反射さ
れ、導光体２の側面部から導光体内に導かれる。また、
導光体２の内面反射処理が施された面にはさらに光反射
板８が配置されているので、導光体２内に導かれた光は
この光反射板８に反射され、光拡散板５が配置された側
の面から集中して導出される。In such an illuminating device, the light emitted from the light source 1 is reflected by the reflection surface of the inner surface of the light source reflection plate 4 and guided from the side surface portion of the light guide body 2 into the light guide body. Also,
Since the light reflection plate 8 is further arranged on the surface of the light guide body 2 which has been subjected to the inner surface reflection treatment, the light guided into the light guide body 2 is reflected by the light reflection plate 8 and the light diffusion plate. 5 is concentrated and derived from the surface on the side where 5 is arranged.
【００１０】ここで、光拡散板５は、液晶表示パネル７
と対向する有効表示面の全域に渡って実質的に均一な光
となるように光透過率を調整するためのもので、光拡散
板５による光透過率の調整は、例えば微小な黒色ドット
などの大きさやピッチを光拡散板５から透過する光が有
効面領域で実質的に均一となるようにパターン印刷され
たものなどが用いられている。Here, the light diffusion plate 5 is the liquid crystal display panel 7.
The light diffusing plate 5 is used to adjust the light transmittance so that the light is substantially uniform over the entire area of the effective display surface facing the light diffusing plate 5. There is used, for example, a pattern printed so that the light transmitted through the light diffusing plate 5 in the size and pitch thereof is substantially uniform in the effective surface area.
【００１１】[0011]
【発明が解決しようとする課題】このような液晶表示装
置を実際に稼動する場合、まず照明装置の細い蛍光管な
どからなる光源１を点灯し発光させる。このような初期
状態からなお稼動を継続すると光源１は次第に発熱す
る。When actually operating such a liquid crystal display device, first, the light source 1 including a thin fluorescent tube of the illuminating device is turned on to emit light. If the operation is continued from such an initial state, the light source 1 gradually generates heat.
【００１２】しかしながら、このような液晶表示装置の
照明装置はその目的からして導光体２の側縁部以外の部
分への光漏れは極力防止しなければならない。従って、
光源１からの発熱量は光源保持部３内に蓄積される。However, for the purpose of the illumination device of such a liquid crystal display device, it is necessary to prevent light leakage to portions other than the side edge portions of the light guide 2 as much as possible. Therefore,
The amount of heat generated from the light source 1 is accumulated in the light source holding unit 3.
【００１３】光源保持部３には不要の光漏れを防止する
ために不要な隙間は設けないように構成されている。従
って、光源１からの発熱は熱伝導により導光体２から両
側の光反射板８および光拡散板５を通して伝わり、さら
に光反射板８を介して液晶表示パネル７にまで伝導す
る。The light source holder 3 is constructed so that no unnecessary gap is provided in order to prevent unnecessary light leakage. Therefore, the heat generated from the light source 1 is transmitted from the light guide 2 through the light reflecting plate 8 and the light diffusing plate 5 on both sides by heat conduction, and is further conducted to the liquid crystal display panel 7 via the light reflecting plate 8.
【００１４】ここで、液晶表示パネル７に伝導する熱量
は、照明装置からの光とは異なり、液晶表示パネルの全
面で均一ではない。即ち、光源１に近い部分ほどその熱
伝導量は大きくなる。Here, the amount of heat conducted to the liquid crystal display panel 7 is not uniform over the entire surface of the liquid crystal display panel, unlike the light from the lighting device. That is, the closer to the light source 1, the greater the amount of heat conduction.
【００１５】一般に液晶表示装置は環境温度により主と
して液晶分子の駆動形態が変化し、駆動電圧などにも影
響を及ぼす。従って、液晶表示パネルの有効表示領域に
不均一な温度むらが生ずると、有効表示領域の表示むら
が生ずることになり、液晶表示装置としての表示品位を
著しく劣化させることになる。Generally, in a liquid crystal display device, the driving mode of liquid crystal molecules mainly changes depending on the ambient temperature, and influences the driving voltage. Therefore, when uneven temperature unevenness occurs in the effective display area of the liquid crystal display panel, display unevenness occurs in the effective display area, and the display quality of the liquid crystal display device is significantly deteriorated.
【００１６】この発明は以上の問題点に鑑みてなされた
もので、照明装置の光源によって発生した熱が液晶表示
パネルに不均一に伝熱されることに起因する表示むらを
防止した液晶表示装置を提供することを目的とする。The present invention has been made in view of the above problems, and provides a liquid crystal display device which prevents display unevenness due to uneven heat transfer to a liquid crystal display panel by heat generated by a light source of a lighting device. The purpose is to provide.
【００１７】[0017]
【課題を解決するための手段】この発明は、駆動回路を
含む液晶表示パネルと、導光体と光反射板と光拡散板と
光源反射板内に収納された光源とを備えた照明装置とか
らなる液晶表示装置において、前記照明装置の前記光源
反射板近傍に放熱手段を備えてなる液晶表示装置であ
り、さらには前記放熱手段は単位面積当たりの表面積が
平坦面の面積よりも実質的に大きい表面積を有する前記
光源反射板の一端部からの延在部分からなる液晶表示装
置とすることによって上記目的を達成するものである。SUMMARY OF THE INVENTION The present invention provides a liquid crystal display panel including a drive circuit, an illuminator including a light guide, a light reflector, a light diffuser, and a light source housed in the light source reflector. In the liquid crystal display device, the liquid crystal display device is provided with a heat radiating means in the vicinity of the light source reflector of the illuminating device, and the heat radiating means has a surface area per unit area substantially larger than that of a flat surface. The above object is achieved by providing a liquid crystal display device including a portion extending from one end of the light source reflector having a large surface area.
【００１８】[0018]
【作用】照明装置の光源からの発熱に起因して液晶表示
パネルに不均一な表示むらを生じさせる問題に対して、
光源自体の発熱を抑制することはできない。従って、液
晶表示パネルの有効面領域でその透過光が均一であるの
と同様に、その熱伝導量も実用上支障のない程度に均一
とする必要がある。With respect to the problem of causing uneven display unevenness on the liquid crystal display panel due to heat generated from the light source of the lighting device,
The heat generation of the light source itself cannot be suppressed. Therefore, just as the transmitted light is uniform in the effective surface area of the liquid crystal display panel, it is also necessary to make the amount of heat conduction uniform so that there is no practical problem.
【００１９】または、液晶表示パネルの有効面領域でそ
の熱伝導量が不均一であっても、実質的に表示むらが生
じない程度に液晶表示パネルへの熱伝導量自体を減少さ
せればよい。ここで、光源に近い部分ほどその熱伝導量
は大きいので、光源に近い部分で熱を吸収または放散す
れば熱伝導量自体を減少させることができる。Alternatively, even if the amount of heat conduction in the effective surface area of the liquid crystal display panel is not uniform, the amount of heat conduction to the liquid crystal display panel itself should be reduced to the extent that display unevenness does not substantially occur. . Here, since the heat conduction amount is larger in the portion closer to the light source, the heat conduction amount itself can be reduced by absorbing or dissipating the heat in the portion closer to the light source.
【００２０】しかしながら、このような熱量を吸収また
は放散する手段として、照明装置の構成からすれば光源
からの光を反射または導光する部材の機能に影響を及ぼ
すことは避けなければならない。従って、光源からの光
を反射または導光する部材の機能に影響を及ぼすことな
く、光源に近い部分で熱量を吸収または放散する手段を
構成する。However, as a means for absorbing or dissipating such a quantity of heat, it is necessary to avoid affecting the function of the member for reflecting or guiding the light from the light source in the structure of the lighting device. Therefore, a means for absorbing or dissipating the amount of heat in the portion close to the light source is configured without affecting the function of the member that reflects or guides the light from the light source.
【００２１】[0021]
【実施例】以下に本発明の液晶表示装置の実施例につい
て詳細に説明する。尚、この実施例に用いられる液晶表
示パネル自体は従来のものと同様であるので詳細な説明
は省略し、本発明の要部についてのみ説明する。図１に
本発明の液晶表示装置の実施例としてのサイドライト方
式の照明装置の概略構成を示す。EXAMPLES Examples of the liquid crystal display device of the present invention will be described in detail below. Since the liquid crystal display panel itself used in this embodiment is the same as the conventional one, detailed description thereof will be omitted, and only the main part of the present invention will be described. FIG. 1 shows a schematic configuration of a sidelight type illumination device as an embodiment of the liquid crystal display device of the present invention.
【００２２】図１において、細い蛍光管などからなる光
源１が光源保持部３内に収納配置されている。さらに光
源１の周囲には少なくともその内面が光反射シートから
なる光源反射板４が配置されている。In FIG. 1, a light source 1 including a thin fluorescent tube is housed and arranged in a light source holding portion 3. Further, around the light source 1, a light source reflection plate 4 whose inner surface is a light reflection sheet is arranged.
【００２３】この細長い光源１の軸方向と平行に導光体
２の側面部が近接対向して配置される。また、導光体２
の一方の面には光反射板８が、他方の面には光拡散板５
が配置される。The side surfaces of the light guide 2 are arranged close to each other and parallel to the axial direction of the elongated light source 1. In addition, the light guide 2
The light reflection plate 8 is provided on one surface and the light diffusion plate 5 is provided on the other surface.
Are placed.
【００２４】また、光源１を収納する光源保持部３は同
時に導光体２の側縁部を光反射板８、光拡散板５および
光源反射板４の端部とともに弾性力などで挟み込むよう
に保持している。Further, the light source holding portion 3 for accommodating the light source 1 simultaneously holds the side edge portion of the light guide body 2 together with the end portions of the light reflecting plate 8, the light diffusing plate 5 and the light source reflecting plate 4 by elastic force or the like. keeping.
【００２５】このようなサイドライト方式の照明装置
は、駆動回路を含む液晶表示パネル７を組み込んだベゼ
ル（図示せず）内に導光体２の光拡散板５の面側が液晶
表示パネル７と対向するようにスペーサ６を介して挿入
保持される。In such a sidelight type illuminating device, the surface side of the light diffusion plate 5 of the light guide 2 is the liquid crystal display panel 7 in a bezel (not shown) incorporating the liquid crystal display panel 7 including a drive circuit. Inserted and held via the spacer 6 so as to face each other.
【００２６】ここで、光拡散板５は、液晶表示パネル７
と対向する有効表示面の全域に渡って実質的に均一な光
となるように光透過率を調整するためのもので、光拡散
板５による光透過率の調整は、例えば微小な黒色ドット
などの大きさやピッチを光拡散板５から透過する光が有
効面領域で実質的に均一となるようにパターン印刷され
たものなどが用いられている。Here, the light diffusion plate 5 is the liquid crystal display panel 7.
The light diffusing plate 5 is used to adjust the light transmittance so that the light is substantially uniform over the entire area of the effective display surface facing the light diffusing plate 5. There is used, for example, a pattern printed so that the light transmitted through the light diffusing plate 5 in the size and pitch thereof is substantially uniform in the effective surface area.
【００２７】このような照明装置において、光源１から
照射された光は光源反射板４の内面の反射面で反射さ
れ、導光体２の側面部から導光体内に導かれる。また、
導光体２の内面反射処理が施された面にはさらに光反射
板８が配置されているので、導光体２内に導かれた光は
この光反射板８に反射され、光拡散板５が配置された側
の面から光拡散板５によって均一化され集中して液晶表
示パネルに導出される。In such an illuminating device, the light emitted from the light source 1 is reflected by the reflection surface of the inner surface of the light source reflection plate 4 and guided from the side surface portion of the light guide body 2 into the light guide body. Also,
Since the light reflection plate 8 is further arranged on the surface of the light guide body 2 which has been subjected to the inner surface reflection treatment, the light guided into the light guide body 2 is reflected by the light reflection plate 8 and the light diffusion plate. From the surface on which 5 is arranged, the light is diffused uniformly by the light diffusing plate 5 and led out to the liquid crystal display panel.
【００２８】ここで、光源反射板４の光拡散板５側の端
部は光源保持部３で挟み込むことが可能で、液晶表示パ
ネル７の有効面領域に達しない程度の長さとされてい
る。しかしながら、光源反射板４の光反射板８側の端部
は、液晶表示パネル７の有効面領域にまで延在する延長
部９を有している。Here, the end portion of the light source reflection plate 4 on the light diffusion plate 5 side can be sandwiched by the light source holding portions 3 and has a length that does not reach the effective surface area of the liquid crystal display panel 7. However, the end portion of the light source reflection plate 4 on the light reflection plate 8 side has an extension portion 9 that extends to the effective surface area of the liquid crystal display panel 7.
【００２９】この光源反射板４の光反射板８側に延長部
９を液晶表示パネル７の有効面領域に達する領域まで延
在することにより、光源１から伝導された熱量はこの延
長部９で効果的に放熱される。By extending the extension 9 to the light reflection plate 8 side of the light source reflection plate 4 up to the area reaching the effective surface area of the liquid crystal display panel 7, the amount of heat conducted from the light source 1 is increased by the extension 9. The heat is dissipated effectively.
【００３０】この光源反射板４の光反射板８側の延長部
９の放熱をより効果的に高めるために、延長部９の単位
面積当たりの表面積が平坦面の面積よりも実質的に大き
い表面積を有するように形成するとよい。この実施例で
は延長部９は波状に形成しているが、鋸歯状や矩形波状
に形成してもよい。In order to enhance the heat radiation of the extension 9 of the light source reflection plate 4 on the light reflection plate 8 side more effectively, the surface area per unit area of the extension 9 is substantially larger than the area of the flat surface. It is good to form so that it may have. In this embodiment, the extension 9 is formed in a wave shape, but it may be formed in a sawtooth shape or a rectangular wave shape.
【００３１】または、光源反射板４の光源保持部３内の
部分を上記実施例と同様に単位面積当たりの表面積が平
坦面の面積よりも実質的に大きい表面積を有するように
形成して放熱効果を高めてもよい。この場合は、光源１
からの光は光源反射板４で反射されるので光源保持部３
自体は光の反射や導光機能は必要ないので、光源保持部
３にも冷却空気を流入させる開口を設けるとさらに有効
である。Alternatively, the portion of the light source reflection plate 4 inside the light source holding portion 3 is formed so that the surface area per unit area is substantially larger than the area of the flat surface as in the above embodiment, and the heat dissipation effect is obtained. May be increased. In this case, the light source 1
Since the light from the light source is reflected by the light source reflector 4,
Since it does not need the function of reflecting or guiding light itself, it is more effective to provide the light source holding portion 3 with an opening through which cooling air flows.
【００３２】[0032]
【発明の効果】以上のように本発明によれば、照明装置
の光の反射や導光機能に影響を及ぼさない光源反射板近
傍に放熱手段を備えることにより、光源の発熱による液
晶表示装置の表示むらを防止することができる。As described above, according to the present invention, the heat dissipating means is provided in the vicinity of the light source reflection plate that does not affect the light reflection or light guiding function of the illuminating device. Display unevenness can be prevented.
【００３３】この放熱手段は単位面積当たりの表面積が
平坦面の面積よりも実質的に大きい表面積を有するよう
に形成するとともに光源保持部にも放熱手段を併用する
ことでさらに放熱効果を高めることができる。The heat radiating means is formed so that the surface area per unit area is substantially larger than the area of the flat surface, and the heat radiating means is also used for the light source holding portion to further enhance the heat radiating effect. it can.
【図１】本発明の液晶表示装置の実施例としての照明装
置の構成を示す概略図。FIG. 1 is a schematic diagram showing a configuration of a lighting device as an embodiment of a liquid crystal display device of the present invention.
【図２】従来の液晶表示装置の照明装置の構成を示す概
略図。FIG. 2 is a schematic diagram showing a configuration of a conventional lighting device of a liquid crystal display device.
１…光源、 ２…導光体、 ３…光源保持部、 ４…光源反射板、 ５…光拡散板、 ６…スペーサ、 ７…液晶表示パネル、 ８…光反射板、 ９…光源反射板の延長部。 DESCRIPTION OF SYMBOLS 1 ... Light source, 2 ... Light guide body, 3 ... Light source holding part, 4 ... Light source reflection plate, 5 ... Light diffusion plate, 6 ... Spacer, 7 ... Liquid crystal display panel, 8 ... Light reflection plate, 9 ... Light source reflection plate Extension.
─────────────────────────────────────────────────────
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【手続補正書】[Procedure amendment]
【提出日】平成７年２月２７日[Submission date] February 27, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１０[Correction target item name] 0010
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１０】ここで、光拡散板５は、液晶パネル７と対
向する有効表示面の全域に渡って実質的に均一な光とな
るように光透過率を調整するためのもので、光拡散板５
による光透過率の調整は、例えば微少な白ドットなど
を、有効面領域における透過光が実質的に均一となるよ
うに、その大きさやピッチを適宜調節してパターン印刷
することにより成される。The light diffusing plate 5 is for adjusting the light transmittance so that the light is substantially uniform over the entire effective display surface facing the liquid crystal panel 7. 5
The light transmittance is adjusted by, for example, finely printing white dots or the like by appropriately adjusting their size and pitch so that the transmitted light in the effective surface area is substantially uniform.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２６[Correction target item name] 0026
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００２６】ここで、光拡散板５は、液晶パネル７と対
向する有効表示面の全域に渡って実質的に均一な光とな
るように光透過率を調整するためのもので、光拡散板５
による光透過率の調整は、例えば微少な白ドットなど
を、有効面領域における透過光が実質的に均一となるよ
うに、その大きさやピッチを適宜調節してパターン印刷
することにより成されたものなどが用いられている。The light diffusing plate 5 is for adjusting the light transmittance so that the light is substantially uniform over the entire effective display surface facing the liquid crystal panel 7. 5
The light transmittance can be adjusted by, for example, minute white dots.
The transmitted light in the effective surface area is substantially uniform.
Pattern printing by adjusting the size and pitch appropriately
Such as those formed is used by.
Claims (2)
体と光反射板と光拡散板と光源反射板内に収納された光
源とを備えた照明装置とからなる液晶表示装置におい
て、前記照明装置の前記光源反射板近傍に放熱手段を備
えてなることを特徴とする液晶表示装置。1. A liquid crystal display device comprising: a liquid crystal display panel including a drive circuit; and a lighting device including a light guide, a light reflection plate, a light diffusion plate, and a light source housed in the light source reflection plate. A liquid crystal display device comprising a heat dissipation means near the light source reflector of the lighting device.
前記放熱手段は単位面積当たりの表面積が平坦面の面積
よりも実質的に大きい表面積を有する前記光源反射板の
一端部からの延在部分からなることを特徴とする液晶表
示装置。2. The liquid crystal display device according to claim 1,
The liquid crystal display device according to claim 1, wherein the heat dissipating means comprises a portion extending from one end of the light source reflector having a surface area per unit area substantially larger than that of a flat surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11942794A JPH07325302A (en) | 1994-06-01 | 1994-06-01 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11942794A JPH07325302A (en) | 1994-06-01 | 1994-06-01 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07325302A true JPH07325302A (en) | 1995-12-12 |
Family
ID=14761179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11942794A Pending JPH07325302A (en) | 1994-06-01 | 1994-06-01 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07325302A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980082467A (en) * | 1997-05-07 | 1998-12-05 | 손욱 | Surface light source device |
| KR19990069599A (en) * | 1998-02-11 | 1999-09-06 | 윤종용 | LCD device backlight |
| KR100421494B1 (en) * | 2001-12-26 | 2004-03-11 | 엘지.필립스 엘시디 주식회사 | Apparatus of back light |
| KR100460406B1 (en) * | 1997-05-12 | 2005-01-17 | 삼성전자주식회사 | Lcd module for increasing a heat exhausting effect |
| KR100460402B1 (en) * | 1997-05-13 | 2005-07-04 | 삼성전자주식회사 | Backlighting device for liquid crystal display device |
| KR100500634B1 (en) * | 1998-03-18 | 2005-10-12 | 삼성전자주식회사 | LCD Module |
| JP2006330599A (en) * | 2005-05-30 | 2006-12-07 | Sharp Corp | Liquid crystal display device |
| KR100661827B1 (en) * | 1999-12-29 | 2006-12-27 | 엘지.필립스 엘시디 주식회사 | Heat-radiation Structure of Backlight Device |
| US7290901B2 (en) | 2001-03-19 | 2007-11-06 | Fujitsu Limited | Light source device, and display device, display module, information handling apparatus and portable information handling apparatus comprising same |
| JP2016085473A (en) * | 2016-02-01 | 2016-05-19 | 船井電機株式会社 | Display device |
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-
1994
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980082467A (en) * | 1997-05-07 | 1998-12-05 | 손욱 | Surface light source device |
| KR100460406B1 (en) * | 1997-05-12 | 2005-01-17 | 삼성전자주식회사 | Lcd module for increasing a heat exhausting effect |
| KR100460402B1 (en) * | 1997-05-13 | 2005-07-04 | 삼성전자주식회사 | Backlighting device for liquid crystal display device |
| KR19990069599A (en) * | 1998-02-11 | 1999-09-06 | 윤종용 | LCD device backlight |
| KR100500634B1 (en) * | 1998-03-18 | 2005-10-12 | 삼성전자주식회사 | LCD Module |
| KR100661827B1 (en) * | 1999-12-29 | 2006-12-27 | 엘지.필립스 엘시디 주식회사 | Heat-radiation Structure of Backlight Device |
| US7290901B2 (en) | 2001-03-19 | 2007-11-06 | Fujitsu Limited | Light source device, and display device, display module, information handling apparatus and portable information handling apparatus comprising same |
| US7654698B2 (en) | 2001-03-19 | 2010-02-02 | Fujitsu Limited | Light source device and display device |
| US7290899B2 (en) | 2001-03-19 | 2007-11-06 | Fujitsu Limited | Light source device and display device |
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| US7470040B2 (en) | 2001-03-19 | 2008-12-30 | Fujitsu Limited | Light source device and display device |
| US7470039B2 (en) | 2001-03-19 | 2008-12-30 | Fujitsu Limited | Light source device and display device |
| US7513649B2 (en) | 2001-03-19 | 2009-04-07 | Fujitsu Limited | Light source device and display device |
| US7513650B2 (en) | 2001-03-19 | 2009-04-07 | Fujitsu Limited | Light source device and display device |
| US7549768B2 (en) | 2001-03-19 | 2009-06-23 | Fujitsu Limited | Display device, including discharge tube temperature control member |
| KR100421494B1 (en) * | 2001-12-26 | 2004-03-11 | 엘지.필립스 엘시디 주식회사 | Apparatus of back light |
| JP2006330599A (en) * | 2005-05-30 | 2006-12-07 | Sharp Corp | Liquid crystal display device |
| JP4653560B2 (en) * | 2005-05-30 | 2011-03-16 | シャープ株式会社 | Liquid crystal display device |
| US9621838B2 (en) | 2011-10-25 | 2017-04-11 | Funai Electric Co., Ltd. | Display device and television apparatus |
| US10310170B2 (en) | 2011-10-25 | 2019-06-04 | Funai Electric Co., Ltd. | Display device and television apparatus |
| US10520666B2 (en) | 2011-10-25 | 2019-12-31 | Funai Electric Co., Ltd. | Display device and television apparatus |
| US10527779B2 (en) | 2011-10-25 | 2020-01-07 | Funai Electric Co., Ltd. | Display device and television apparatus |
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| US11333823B2 (en) | 2011-10-25 | 2022-05-17 | Funai Electric Co., Ltd. | Display device and television apparatus |
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