JPH0524943Y2 - - Google Patents
Info
- Publication number
- JPH0524943Y2 JPH0524943Y2 JP9009987U JP9009987U JPH0524943Y2 JP H0524943 Y2 JPH0524943 Y2 JP H0524943Y2 JP 9009987 U JP9009987 U JP 9009987U JP 9009987 U JP9009987 U JP 9009987U JP H0524943 Y2 JPH0524943 Y2 JP H0524943Y2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light source
- crystal panel
- wiring board
- display
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims description 21
- 239000003973 paint Substances 0.000 claims description 3
- 230000004907 flux Effects 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、液晶表示装置の反射装置に関する。[Detailed explanation of the idea] [Industrial application field] The present invention relates to a reflective device for a liquid crystal display device.
発光素子を光源とする透過型液晶パネルを用い
た液晶表示装置は第２図の構造をしている。光源
２３は、透過型液晶パネル２１の表示方向に発光
し、光束は透過型液晶パネル２１の表示面の輝度
を均一とするために拡散板２２によつて拡散され
る。しかし拡散板２２の光源２３側面の反射を無
くすことは困難であり、表示方向への光束の一部
は光源２３方向へ戻つてしまう。そこで、光源に
対して表示方向と逆の位置に反射装置２４を配置
し再度表示方向へ光束を反射させ、効率的に光源
を利用する。
A liquid crystal display device using a transmissive liquid crystal panel using a light emitting element as a light source has the structure shown in FIG. The light source 23 emits light in the display direction of the transmissive liquid crystal panel 21, and the luminous flux is diffused by the diffuser plate 22 to make the brightness of the display surface of the transmissive liquid crystal panel 21 uniform. However, it is difficult to eliminate reflection from the side surface of the light source 23 on the diffuser plate 22, and a portion of the light beam directed toward the display direction returns toward the light source 23. Therefore, the reflection device 24 is arranged at a position opposite to the display direction with respect to the light source to reflect the light flux again in the display direction, thereby making efficient use of the light source.
しかし従来技術では反射装置２４として、樹脂
成形品や金属板等の部品をプリント配線板２６の
上に設置しており、当然その部品価格を考慮しな
ければならなかつた。本考案は反射板２４を低価
格で実現することを目的とする。
However, in the prior art, a component such as a resin molded product or a metal plate is installed on the printed wiring board 26 as the reflecting device 24, and the cost of the component must be taken into consideration. The present invention aims to realize the reflector 24 at a low cost.
〔問題点を解決するための手段〕
本考案での液晶表示装置は、表示方向と逆側に
配置する反射装置の役割りを、プリント配線板上
のシルク印刷によつて行う事を特徴とする。[Means for solving the problem] The liquid crystal display device according to the present invention is characterized in that the role of a reflecting device placed on the opposite side to the display direction is performed by silk printing on a printed wiring board. .
第１図は本考案による液晶表示装置の断面を示
している。光源１３は透過液晶パネル１１の表示
方向に発光しており、このことで暗い場所におい
ても透過液晶パネル１１上の表示を視認すること
ができる。さらに表示状態を安定するために、拡
散板１２は光源３で発光された光束を透過液晶パ
ネル１１の表示面上の輝度を均一にするために光
源１３と透過液晶パネル１１の間におかれる。拡
散板１２は、そこに照射された光束が拡散板１２
の内部において屈曲や乱反射を起こし表示面上は
均一な輝度となるが、内部または拡散板１２の光
源１３側の面で反射した光束が光源１３側に戻つ
てしまう。ここで、プリント配線板１６は、プリ
ント配線板１６に設けられた電極と透過型液晶パ
ネル１１の端子を接続する接続線１７を介して透
過型液晶パネル１１を搭載している。また同様に
光源１３もプリント配線板上に搭載されている。
なおケース１５は、透過型液晶パネルの表示部を
露出して、光源１３の光束が表示部以外に漏れな
いようにしており又、透過型液晶パネルを保持し
ながらプリント配線板１６に固定されている。そ
こで、プリント配線板１６の上面に白色のシルク
印刷１４を行うと、前記拡散板１２によつて光源
１３方向に反射した光束は白色のシルク印刷され
た塗料によつて再度表示面方向に反射する。光源
１３から発光された光束は、有効に表示用として
利用されることになる。
FIG. 1 shows a cross section of a liquid crystal display device according to the present invention. The light source 13 emits light in the display direction of the transmissive liquid crystal panel 11, so that the display on the transmissive liquid crystal panel 11 can be viewed even in a dark place. Furthermore, in order to stabilize the display state, a diffuser plate 12 is placed between the light source 13 and the transmissive liquid crystal panel 11 in order to uniformize the brightness of the luminous flux emitted by the light source 3 on the display surface of the transmissive liquid crystal panel 11. The diffuser plate 12 is such that the light beam irradiated thereon is transmitted to the diffuser plate 12.
Bending and diffuse reflection occur inside the display screen, resulting in uniform brightness on the display surface, but the luminous flux reflected inside or on the surface of the light source 13 side of the diffuser plate 12 returns to the light source 13 side. Here, the printed wiring board 16 mounts the transmissive liquid crystal panel 11 via connection lines 17 that connect electrodes provided on the printed wiring board 16 and terminals of the transmissive liquid crystal panel 11. Similarly, the light source 13 is also mounted on the printed wiring board.
The case 15 exposes the display part of the transmissive liquid crystal panel to prevent the luminous flux of the light source 13 from leaking outside the display part, and is fixed to the printed wiring board 16 while holding the transmissive liquid crystal panel. There is. Therefore, when white silk printing 14 is performed on the top surface of the printed wiring board 16, the light beam reflected in the direction of the light source 13 by the diffusion plate 12 is reflected again in the direction of the display surface by the white silk printed paint. . The luminous flux emitted from the light source 13 is effectively used for display purposes.
以上のように、反射装置をプリント配線板に一
般にシルク印刷される塗料で機能させることで、
従来の反射装置用部品を排除することが可能とな
り、またその部品を搭載する手間も省くことがで
きる。
As mentioned above, by making the reflective device function with the paint that is generally silk-printed on the printed wiring board,
It is possible to eliminate conventional parts for a reflection device, and the effort to mount the parts can also be saved.
第１図は、本考案の液晶表示装置の実施例を示
す要部の断面図。第２図は、従来例の液晶表示装
置を示す要部の断面図。
１１，２１……透過型液晶パネル、１２，２２
……拡散板、１３，２３……光源、１４……反射
装置、１５，２５……ケース１６，２６……プリ
ント配線板、１４……プリント配線板上のシルク
印刷。
FIG. 1 is a sectional view of essential parts showing an embodiment of the liquid crystal display device of the present invention. FIG. 2 is a sectional view of essential parts of a conventional liquid crystal display device. 11, 21... Transmissive liquid crystal panel, 12, 22
... Diffusion plate, 13, 23 ... Light source, 14 ... Reflector, 15, 25 ... Case 16, 26 ... Printed wiring board, 14 ... Silk printing on the printed wiring board.
Claims (1)
リント配線板上のシルク印刷された塗料によつて
反射させることを特徴とする液晶表示装置。 A liquid crystal display device characterized in that a light source of a liquid crystal panel is reflected by silk-printed paint on a printed wiring board on which the liquid crystal panel is mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009987U JPH0524943Y2 (en) | 1987-06-11 | 1987-06-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9009987U JPH0524943Y2 (en) | 1987-06-11 | 1987-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63198083U JPS63198083U (en) | 1988-12-20 |
| JPH0524943Y2 true JPH0524943Y2 (en) | 1993-06-24 |
Family
ID=30949661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9009987U Expired - Lifetime JPH0524943Y2 (en) | 1987-06-11 | 1987-06-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0524943Y2 (en) |
-
1987
- 1987-06-11 JP JP9009987U patent/JPH0524943Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63198083U (en) | 1988-12-20 |
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