JP3192796B2 - Liquid crystal display - Google Patents
Liquid crystal displayInfo
- Publication number
- JP3192796B2 JP3192796B2 JP01871793A JP1871793A JP3192796B2 JP 3192796 B2 JP3192796 B2 JP 3192796B2 JP 01871793 A JP01871793 A JP 01871793A JP 1871793 A JP1871793 A JP 1871793A JP 3192796 B2 JP3192796 B2 JP 3192796B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- guide plate
- light guide
- frame
- crystal cell
- 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 - Lifetime
Links
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Optical Elements Other Than Lenses (AREA)
- Liquid Crystal (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は液晶セルと照明手段を有
した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 having a liquid crystal cell and illumination means.
【０００２】[0002]
【従来の技術】従来より液晶表示装置においては、特開
平３−１９４５１５号公報に示されるように、液晶セル
と、液晶セルの下方に配置された導光板や光源からなる
照明手段とを枠体を用いて支持収納し、いわゆるモジュ
ールを構成していた。この時、照明手段の導光板は例え
ば枠体に設けた段差部や突出爪によって固定され、ある
いは枠体の底面に裏板を設けてこの裏板によって固定さ
れていた。また液晶セルは周辺部に駆動素子を有した硝
子基板を利用しているので、枠体の上に緩衝用の弾性材
を配置してその上に液晶セルを載置していた。2. Description of the Related Art Conventionally, in a liquid crystal display device, as disclosed in Japanese Patent Application Laid-Open No. 3-194515, a liquid crystal cell and an illuminating means composed of a light guide plate and a light source disposed below the liquid crystal cell are framed. To support and house a module. At this time, the light guide plate of the illuminating means is fixed by, for example, a step portion or a protruding claw provided on the frame, or a back plate is provided on the bottom surface of the frame and fixed by the back plate. Further, since the liquid crystal cell uses a glass substrate having a driving element in a peripheral portion, an elastic material for buffering is arranged on the frame, and the liquid crystal cell is mounted thereon.
【０００３】[0003]
【発明が解決しようとする課題】ところがこのように導
光板を支える枠体の段差や裏板はそれ自体がある程度の
強度を持つ必要があるために一定の厚みと枠体への固定
が必要となり、モジュールは液晶セルや導光板の厚みの
ほかにこれらの段差や裏板に要求される厚みが加算され
て薄く構成できなかった。However, since the steps and the back plate of the frame supporting the light guide plate need to have a certain strength as described above, they need to be fixed to a certain thickness and fixed to the frame. However, the module cannot be made thin because the thickness of the liquid crystal cell and the light guide plate as well as the thickness required for these steps and the back plate are added.
【０００４】[0004]
【課題を解決するための手段】本発明は上述の点を考慮
してなされたもので、液晶セルと、液晶セルの下方に配
置されると共に導光板と光源を有する照明手段と、液晶
セルを支え照明手段を収納する枠体とを具備した液晶表
示装置において、枠体及び導光板の下方にシートを配置
し、前記シートに接着剤層を設け、前記シートを前記接
着剤層によって枠体と導光板とに貼付して導光板を枠体
に固定するものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and comprises a liquid crystal cell, illumination means disposed below the liquid crystal cell and having a light guide plate and a light source, and a liquid crystal cell. In a liquid crystal display device comprising a frame for holding the supporting illumination means, a sheet is disposed below the frame and the light guide plate, an adhesive layer is provided on the sheet, and the sheet is formed with the frame by the adhesive layer. The light guide plate is attached to the light guide plate to fix the light guide plate to the frame.
【０００５】また、第２に、枠体及び導光板の下方に配
置されるシートは導光板よりも広い面積を有する反射シ
ートである。Second, the sheet disposed below the frame and the light guide plate is a reflection sheet having a larger area than the light guide plate.
【０００６】[0006]
【作用】この様な構成は、照明手段の光利用効率を高め
るために必要な導光板の裏面側の反射シートで導光板を
枠体に一体に固定でき、特別な固定部材を必要としない
のでモジュールの厚みが薄くできる。With such a construction, the light guide plate can be integrally fixed to the frame with the reflection sheet on the back surface side of the light guide plate necessary for enhancing the light use efficiency of the illumination means, and no special fixing member is required. The thickness of the module can be reduced.
【０００７】[0007]
【実施例】図１は本発明実施例の液晶表示装置の要部断
面図で、１は例えばツイストネマティック型若しくはス
ーパーツイストネマティック型の液晶セルで、必要に応
じて周辺に駆動素子２が接続されており、駆動素子２は
例えば可撓性基板に半導体素子が固定されているテープ
オートメーティッドボンディング（ＴＡＢ）型のもので
ある。３は液晶セル１の下方に配置された導光板３１と
光源３２とからなる照明手段で、導光板３１は表面に光
拡散板３１１が、そして裏面に反射シート３１２が配置
されたアクリル樹脂などからなる光伝導性の板からな
り、光源３２は冷陰極管や螢光灯からなる線状の光源
で、導光板３１の一側面に沿って導光板３１に離隔して
配置されている。４は液晶セル１を支え照明手段３を収
納する枠体で、樹脂成形品などからなる。５は液晶セル
１を覆い枠体４に固定された前面パネルである。FIG. 1 is a sectional view of an essential part of a liquid crystal display device according to an embodiment of the present invention. Reference numeral 1 denotes a liquid crystal cell of, for example, a twisted nematic type or a super twisted nematic type. The drive element 2 is, for example, a tape automated bonding (TAB) type in which a semiconductor element is fixed to a flexible substrate. Reference numeral 3 denotes an illuminating unit including a light guide plate 31 and a light source 32 disposed below the liquid crystal cell 1. The light guide plate 31 is formed of an acrylic resin or the like having a light diffusion plate 311 on a front surface and a reflection sheet 312 on a rear surface. The light source 32 is a linear light source such as a cold-cathode tube or a fluorescent lamp. The light source 32 is spaced apart from the light guide plate 31 along one side surface of the light guide plate 31. Reference numeral 4 denotes a frame which supports the liquid crystal cell 1 and accommodates the illumination means 3, and is made of a resin molded product or the like. A front panel 5 covers the liquid crystal cell 1 and is fixed to the frame 4.
【０００８】この様な構成において、さらに、照明手段
３の反射シート３１２は導光板３１よりも広い面積をも
つと共に一面に接着剤層が設けられており、導光板３１
の裏面と枠体４の裏面とに貼付され、光源３２を非接触
に覆っている。この様な反射シート３１２は光反射効率
がよく導光板を支えることのできる強度を持つものが好
ましく、例えば０．０１ｍｍ〜０．５ｍｍのアルミニウ
ムシートとか、０．１５ｍｍ〜０．５ｍｍ上の白色ポリ
エステル樹脂シートなどが利用できる。なお導光板３１
は枠体４の収納部（概ねは透孔）に嵌合されたり、枠体
４の一部に固定されているとより好ましい。この様な構
成にすることによって従来モジュールの厚みを７ｍｍ以
下にすることが困難であったが、本発明にあっては５ｍ
ｍとすることができた。In such a configuration, the reflection sheet 312 of the illumination means 3 has a larger area than the light guide plate 31 and is provided with an adhesive layer on one surface.
And the rear surface of the frame body 4 are covered with the light source 32 in a non-contact manner. Such a reflection sheet 312 preferably has good light reflection efficiency and strength enough to support the light guide plate, for example, an aluminum sheet of 0.01 mm to 0.5 mm, or a white polyester of 0.15 mm to 0.5 mm. A resin sheet or the like can be used. The light guide plate 31
It is more preferable that the is fitted into a storage portion (generally a through hole) of the frame 4 or is fixed to a part of the frame 4. With such a configuration, it has been difficult to reduce the thickness of the conventional module to 7 mm or less.
m.
【０００９】また液晶セル１は弾性材６を介して枠体４
上に載置され、枠体４の周辺部表面には弾性材６に当接
する突出部４１が設けられている。この弾性剤６は例え
ば厚さ０．５〜２．０ｍｍの棒状のシリコンゴムからな
り、液晶セル１の周辺に沿って配置され、突出部４１は
例えば高さ０．１〜１．０ｍｍの円錐形に形成され、弾
性剤６の１本に対して１〜数個が当接するように配置さ
れている。そして液晶セル１の周辺に駆動回路２が設け
られていれば、必ず駆動回路２の配置の隙間があるの
で、その隙間に対応するように枠体４に突出部４１を設
けておけば弾性体の滑り止め効果が一層高くなる。The liquid crystal cell 1 has a frame 4 via an elastic material 6.
A projection 41 that is placed on the top and is in contact with the elastic member 6 is provided on the peripheral surface of the frame 4. The elastic agent 6 is made of, for example, a rod-shaped silicon rubber having a thickness of 0.5 to 2.0 mm, and is disposed along the periphery of the liquid crystal cell 1. The elastic agent 6 is arranged in such a manner that one to several elastic agents 6 abut. If the drive circuit 2 is provided around the liquid crystal cell 1, there is always a gap in the arrangement of the drive circuit 2. Therefore, if the projecting portion 41 is provided on the frame 4 so as to correspond to the gap, the elastic body Anti-slip effect is further enhanced.
【００１０】[0010]
【発明の効果】この様な構成は、照明手段の光利用効率
を高めるために必要な導光板の裏面側の反射シートで導
光板を枠体に一体に固定でき、特別な固定部材を必要と
しないのでモジュールの厚みが薄くできる。またモジュ
ールの裏面が反射シートにより平坦となるので取扱い易
くなった。According to such a configuration, the light guide plate can be integrally fixed to the frame by the reflection sheet on the back side of the light guide plate necessary for enhancing the light use efficiency of the illumination means, and a special fixing member is required. Since it does not, the thickness of the module can be reduced. Further, the back surface of the module is flattened by the reflection sheet, so that the handling becomes easy.
【００１１】[0011]
【図１】本発明実施例の液晶表示装置の要部断面図であ
る。FIG. 1 is a sectional view of a main part of a liquid crystal display device according to an embodiment of the present invention.
１ 液晶セル ２ 駆動回路 ３ 照明手段 ３１ 導光板 ３１２ 反射シート ４ 枠体 ４１ 突出部 DESCRIPTION OF SYMBOLS 1 Liquid crystal cell 2 Drive circuit 3 Lighting means 31 Light guide plate 312 Reflection sheet 4 Frame 41 Projection
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G02F 1/13357 G02F 1/1333 G09F 9/00 303 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) G02F 1/13357 G02F 1/1333 G09F 9/00 303
Claims (2)
ると共に導光板と光源を有する照明手段と、液晶セルを
支え照明手段を収納する枠体とを具備した液晶表示装置
において、枠体及び導光板の下方にシートを配置し、前
記シートに接着剤層を設け、前記シートを前記接着剤層
によって枠体と導光板とに貼付して導光板を枠体に固定
することを特徴とする液晶表示装置。1. A liquid crystal cell, and disposed below the liquid crystal cell.
And a lighting device having a light guide plate and a light source, and a frame supporting the liquid crystal cell and housing the lighting device, wherein a sheet is disposed below the frame and the light guide plate,
An adhesive layer is provided on the sheet, and the sheet is provided with the adhesive layer.
Affixed to the frame and the light guide plate to secure the light guide plate to the frame
A liquid crystal display device comprising:
を有する反射シートであることを特徴とする請求項１記
載の液晶表示装置。 2. The sheet has an area larger than that of the light guide plate.
2. The reflection sheet according to claim 1, wherein:
Liquid crystal display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01871793A JP3192796B2 (en) | 1993-02-05 | 1993-02-05 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01871793A JP3192796B2 (en) | 1993-02-05 | 1993-02-05 | Liquid crystal display |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001010178A Division JP3302009B2 (en) | 2001-01-18 | 2001-01-18 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06230379A JPH06230379A (en) | 1994-08-19 |
| JP3192796B2 true JP3192796B2 (en) | 2001-07-30 |
Family
ID=11979416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01871793A Expired - Lifetime JP3192796B2 (en) | 1993-02-05 | 1993-02-05 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3192796B2 (en) |
-
1993
- 1993-02-05 JP JP01871793A patent/JP3192796B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06230379A (en) | 1994-08-19 |
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