JPS6280623A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPS6280623A JPS6280623A JP60221573A JP22157385A JPS6280623A JP S6280623 A JPS6280623 A JP S6280623A JP 60221573 A JP60221573 A JP 60221573A JP 22157385 A JP22157385 A JP 22157385A JP S6280623 A JPS6280623 A JP S6280623A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- plate
- light
- display device
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133604—Direct backlight with lamps
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、車両用メータ類、時計或はその他の電子機器
等に用いられる液晶表示装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to improvements in liquid crystal display devices used in vehicle meters, watches, and other electronic devices.
従来の液晶表示装置は第８図に示すように、ケースｌ内
底面に光源２，２が設けられ、該光源２゜２の上方には
、半透明の合成樹脂（例えば乳白色のアクリル材）等か
ら成る光拡散板３が配置され更にこの光拡散板３上には
液晶表示板４が配置され、これらは、ケース本体ｌの上
部１ａ 、 ｌａとランプハウス５間に固定されている
。そして、光源２゜２の光は光拡散板３により拡散され
、液晶表示板４を照らし、液晶表示板４の表示を行って
いた。As shown in FIG. 8, a conventional liquid crystal display device is provided with light sources 2, 2 on the inner bottom surface of a case l, and above the light sources 2.2, translucent synthetic resin (for example, milky white acrylic material), etc. Further, a liquid crystal display panel 4 is disposed on the light diffusion plate 3, and these are fixed between the upper parts 1a and 1a of the case body 1 and the lamp house 5. The light from the light source 2.2 is diffused by the light diffusing plate 3 and illuminates the liquid crystal display plate 4, thereby displaying information on the liquid crystal display plate 4.
上記従来の液晶表示装置にあっては、光拡散板は半透明
な合成樹脂等によシ構成されているので光の拡散が十分
でなく、液晶表示板への照射光にむらが生じ、液晶表示
が読みとりにぐいという問題点があった。In the above-mentioned conventional liquid crystal display device, the light diffusion plate is made of semi-transparent synthetic resin, etc., so the light is not diffused sufficiently, causing unevenness in the light irradiated to the liquid crystal display plate. There was a problem that the display was difficult to read.
本発明は、従来の液晶表示装置における上記のような問
題点を解決し、光源からの光を光拡散板で十分に乱反射
させて拡散し、液晶表示板にむらなく照射することがで
きる液晶表示装置を提供しようとするものである。The present invention solves the above-mentioned problems in conventional liquid crystal display devices, and provides a liquid crystal display in which light from a light source is sufficiently diffusely reflected and diffused by a light diffusion plate so that the liquid crystal display plate can be illuminated evenly. The aim is to provide equipment.
上記従来の技術的課題を解決するために、本発明の液晶
表示装置は、液晶表示板の背後に光拡散板と光源とを設
けた液晶表示装置において、前記光拡散板は白色系の不
織布を用いて構成されている。In order to solve the above-mentioned conventional technical problems, the present invention provides a liquid crystal display device in which a light diffusing plate and a light source are provided behind a liquid crystal display plate, in which the light diffusing plate is made of a white nonwoven fabric. It is configured using
光拡散板は、白色系の不織布を用いて構成しているので
、光源から発せられる光を均一化して、液晶表示板にむ
らなく照射することとなシ、液晶表示を見易くする。Since the light diffusing plate is constructed using a white nonwoven fabric, the light emitted from the light source is uniformized, and the liquid crystal display plate is irradiated evenly, making the liquid crystal display easy to see.
図面は本発明の実施例を示す。 The drawings illustrate embodiments of the invention.
第１図は液晶表示装置の簡略断面図、第２図は液晶表示
装置の一例を示す分解斜視図、第３図は液晶表示装置の
ランプハウスを示す平面図、第４図は第３図のＡ−Ａ断
面図、第５図は第３図のＢ−Ｂ断面図、第６図は液晶表
示装置の一部の縦断正面図、第７図は液晶表示装置の横
断平面図である。Fig. 1 is a simplified sectional view of a liquid crystal display device, Fig. 2 is an exploded perspective view showing an example of a liquid crystal display device, Fig. 3 is a plan view showing a lamp house of the liquid crystal display device, and Fig. 4 is the same as Fig. 3. 5 is a sectional view taken along line BB in FIG. 3, FIG. 6 is a longitudinal sectional front view of a portion of the liquid crystal display device, and FIG. 7 is a cross-sectional plan view of the liquid crystal display device.
第１図において、１３は光源としてのランプで、このラ
ンプ１３の上方には光拡散板１６と液晶表示板１７がそ
れぞれ設けられ、該光拡散板１６と液晶表示板１７間は
、ランプからの光の拡散を大きくするために一定の間隔
が設けられている。上記光拡散板１６は、透明なプラス
チ、り等の板材１４ 、１４間に白色系の不織布１５を
設けることにより構成されているが、板材１４ 、１４
を取除き白色系の不織布１５のみでもよく、また、不織
布１５の一方の面に板材１４を取付けることも可能であ
る。In FIG. 1, reference numeral 13 denotes a lamp as a light source, and a light diffusion plate 16 and a liquid crystal display plate 17 are provided above the lamp 13, and the space between the light diffusion plate 16 and the liquid crystal display plate 17 is A certain spacing is provided to increase the diffusion of light. The light diffusing plate 16 is constructed by providing a white non-woven fabric 15 between the plate materials 14, such as transparent plastic or glue.
It is also possible to remove the white nonwoven fabric 15 and use only the white nonwoven fabric 15, or to attach the plate material 14 to one side of the nonwoven fabric 15.
次に上記光拡散板を用いて構成した液晶表示装置の一実
施例を第２図〜第７図を基にして詳細に説明する。Next, an embodiment of a liquid crystal display device constructed using the above-mentioned light diffusing plate will be described in detail with reference to FIGS. 2 to 7.
図において、１１はプリント基板で、このプリント基板
上にはランプハウス１２が設けられている。In the figure, 11 is a printed circuit board, and a lamp house 12 is provided on this printed circuit board.
ランプハウス１２内には傾斜板状の反射面部１２ａと各
ランプ１３の周夛を囲む漏斗状の反射面部１２ｂが設け
られている。いずれの反射面部１２ａ 、 １２ｂも表
面に鏡面仕上げが施こされている。光拡散板１６は、例
えば障子紙等のような白色系の不織布１５と、この不織
布１５の上下面に透明なプラスチック板等の板材１４
、１４等を積層することによ多形成されて−る。Inside the lamp house 12, there are provided a reflective surface portion 12a shaped like an inclined plate and a reflective surface portion 12b shaped like a funnel surrounding the periphery of each lamp 13. Both reflective surface portions 12a and 12b have a mirror finish on their surfaces. The light diffusion plate 16 includes a white nonwoven fabric 15 such as shoji paper, and a board material 14 such as a transparent plastic plate on the upper and lower surfaces of the nonwoven fabric 15.
, 14, etc. are laminated.
液晶表示板１７の上面には偏光板１７ａが貼着されてお
夛、液晶表示板１７は前記光拡散板１６の上方に一定の
間隔をおいて配置される。A polarizing plate 17a is attached to the upper surface of the liquid crystal display plate 17, and the liquid crystal display plate 17 is arranged above the light diffusing plate 16 at a constant interval.
アース枠体１８は、導電性の金属薄板から成シ、液晶表
示板１７上に重ねられる矩形の枠板１８ａと、この枠板
１８ａの一側縁から下方に延出した導電板１８ｂとを有
する。導電板１８ｂは下端において、図示しない機器本
体の導電部に接触するように組込まれる。枠体１８ａの
他側縁には、後述するケース本体１９の内側面の係合凸
条１９ａと係合する係合凹所１８ｃが形成されている。The grounding frame 18 is made of a conductive metal thin plate and has a rectangular frame plate 18a which is stacked on the liquid crystal display panel 17, and a conductive plate 18b extending downward from one side edge of the frame plate 18a. . The conductive plate 18b is assembled at its lower end so as to come into contact with a conductive part of the device main body (not shown). An engagement recess 18c that engages with an engagement protrusion 19a on the inner surface of the case body 19, which will be described later, is formed on the other side edge of the frame 18a.
保護シート２０は、例えば透明なポリエステル薄板２０
ａの下面にＮｉ、Ａｇ等を含む導電塗料をコーティング
して導電性被膜２０ｂが形成される。この導電性被膜２
０ｂは膜厚が極めて薄いので透明である。The protective sheet 20 is, for example, a transparent polyester thin plate 20.
A conductive film 20b is formed by coating the lower surface of the conductive film 20b with a conductive paint containing Ni, Ag, etc. This conductive film 2
0b is transparent because its film thickness is extremely thin.
また、ポリエステル薄板２０ａに代え、透明で、且つ導
電性被膜のコーティングが可能な他の合成樹脂材も適用
可能である。保護シート加の導電性被膜２０ｂは、枠板
１８ｂの上部に重ねられる。Further, in place of the polyester thin plate 20a, other synthetic resin materials that are transparent and capable of being coated with a conductive film may also be used. The conductive coating 20b with the protective sheet is stacked on top of the frame plate 18b.
ケース本体１９は長手方向側面にランプハウス１２の挿
入突起１２ｃ 、 １２ｃに対応する取付溝１９ｂ 、
１９ｂを備えている。また、ケース本体１９の他側面
の両側下部にはランプハウス１２の係合片１２ｂ 、
１２ｂに対応する一対の係合孔１９ｃ 、 １９ｃが設
けられｔその側面の一側下部にはプリント基板１１の係
合突片１１ａを嵌合させるための保合孔１９ｄを有する
突片１９ｅが突設されている。The case body 19 has mounting grooves 19b corresponding to the insertion protrusions 12c and 12c of the lamp house 12 on the longitudinal side surface.
19b. In addition, at the bottom of both sides of the other side of the case body 19, there are engagement pieces 12b of the lamp house 12,
A pair of engagement holes 19c, 19c corresponding to the engagement holes 12b are provided, and a protrusion 19e having a retaining hole 19d for fitting the engagement protrusion 11a of the printed circuit board 11 is protruded at the lower part of one side of the side surface thereof. It is set up.
また、透明なプラスチック板等の板材１４ 、１４の表
面に梨地処理を施し、光の拡散を更に大きくすることも
可能である。It is also possible to apply a satin finish to the surfaces of the plates 14, 14, such as transparent plastic plates, to further increase the diffusion of light.
以上のランプハウス１２、光拡散板１６、液晶表示板１
７、アース枠体１８、保護シート２０上にケース本体１
９が被せられる。ケース本体１９の係合孔１９Ｃ。The above lamp house 12, light diffusion plate 16, liquid crystal display plate 1
7. Case body 1 on earth frame 18 and protective sheet 20
9 is covered. Engagement hole 19C of case body 19.
１９ｃはランプハウス１２の係合片１２ｂ 、 １２ｂ
にスナ、プイン式に係合され、また、突片１９ｅはプリ
ント基板１１の係止突片１１ａに係止される。そして、
ケース本体１９とランプハウス１２間に光拡散板１６、
液晶表示板１７、アース枠体１８、保護シート加が挾持
される。光拡散板１６と液晶表示板１７間には、光の拡
散を大きくするために一定の間隔が設けられている。19c is the engagement piece 12b of the lamp house 12, 12b
The protruding piece 19e is engaged with the locking protrusion 11a of the printed circuit board 11 in a snap-in manner. and,
A light diffusing plate 16 between the case body 19 and the lamp house 12,
A liquid crystal display board 17, a grounding frame 18, and a protective sheet are sandwiched. A certain distance is provided between the light diffusion plate 16 and the liquid crystal display plate 17 in order to increase the diffusion of light.
次に作用を説明する。Next, the action will be explained.
ランプハウス１２内において２ンブ１３から発せられる
光は、反射面部１２ａ 、 １２ｂによってランプ１２
の光が拡散されると共に、ランプハウス１２上方ニ設け
た光拡散板１６は、ランプ１２からの光を均一に上方に
向かって反射することとなり、液晶表示板１７をむらな
く照射する。そして、液晶表示は見易く照らし出されケ
ース本体１９の上部開口から見視される。The light emitted from the two lamps 13 in the lamp house 12 is reflected by the lamp 12 by the reflective surface parts 12a and 12b.
At the same time, the light diffusing plate 16 provided above the lamp house 12 uniformly reflects the light from the lamp 12 upward, so that the liquid crystal display panel 17 is uniformly illuminated. The liquid crystal display is illuminated for easy viewing and can be viewed from the upper opening of the case body 19.
以上のように本発明においては、光拡散板を白色系の不
織布を用いて構成しているので、光源から発せられた光
を均一化しながら上方に向かって反射させ、液晶表示板
にむらのない均一な光を照射することにより、液晶表示
がよく浮き立って見易い液晶表示装置を提供することが
できる。As described above, in the present invention, since the light diffusing plate is constructed using a white nonwoven fabric, the light emitted from the light source is reflected upward while being uniformized, and the liquid crystal display panel is uniformly illuminated. By irradiating uniform light, it is possible to provide a liquid crystal display device in which the liquid crystal display stands out well and is easy to see.
第１図は液晶表示装置の簡略断面図、第２図は液晶表示
装置の一例を示す分解斜視図、第３図は液晶表示装置の
ランプハウスを示す平面図、第４図は第３図０Ａ−Ａ断
面図、第５図は第３図のＢ−Ｂ断面図、第６図は液晶表
示装置の一部の縦断面図、第７図は液晶表示装置の横断
平面図、第８図は従来の液晶表示装置の断面図を示す。
１２・・ランプハウス
１３− ランプ
１４・・・板材
１５・・・不織布
１６・・・光拡散板
１７・・・液晶表示板
半１図Fig. 1 is a simplified sectional view of a liquid crystal display device, Fig. 2 is an exploded perspective view showing an example of a liquid crystal display device, Fig. 3 is a plan view showing a lamp house of the liquid crystal display device, and Fig. 4 is Fig. 3 0A. -A sectional view, FIG. 5 is a BB sectional view in FIG. 3, FIG. 6 is a vertical sectional view of a part of the liquid crystal display device, FIG. 1 shows a cross-sectional view of a conventional liquid crystal display device. 12...Lamp house 13- Lamp 14...Plate material 15...Non-woven fabric 16...Light diffusion plate 17...Liquid crystal display board half 1 diagram
Claims (1)
装置において、前記光拡散板は白色系の不織布を用いて
構成されていることを特徴とする液晶表示装置。1. A liquid crystal display device including a light diffusion plate and a light source provided behind a liquid crystal display plate, wherein the light diffusion plate is constructed using a white nonwoven fabric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60221573A JPS6280623A (en) | 1985-10-04 | 1985-10-04 | Liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60221573A JPS6280623A (en) | 1985-10-04 | 1985-10-04 | Liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6280623A true JPS6280623A (en) | 1987-04-14 |
Family
ID=16768850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60221573A Pending JPS6280623A (en) | 1985-10-04 | 1985-10-04 | Liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6280623A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064390A1 (en) * | 2003-12-30 | 2005-07-14 | Samsung Electronics Co., Ltd. | Backlight assembly and flat panel display apparatus having the same |
| WO2010126188A1 (en) * | 2009-04-29 | 2010-11-04 | 도레이새한 주식회사 | Light diffusing plate for lcd backlight unit |
| JP2015088269A (en) * | 2013-10-29 | 2015-05-07 | スリーエム イノベイティブ プロパティズ カンパニー | Surface illuminant device and method for manufacturing surface illuminant device |
-
1985
- 1985-10-04 JP JP60221573A patent/JPS6280623A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064390A1 (en) * | 2003-12-30 | 2005-07-14 | Samsung Electronics Co., Ltd. | Backlight assembly and flat panel display apparatus having the same |
| US7270467B2 (en) | 2003-12-30 | 2007-09-18 | Samsung Electronics Co., Ltd. | Backlight assembly and flat panel display apparatus having the same |
| US7651258B2 (en) | 2003-12-30 | 2010-01-26 | Samsung Electronics Co., Ltd. | Backlight assembly and flat panel display apparatus having the same |
| US7883260B2 (en) | 2003-12-30 | 2011-02-08 | Samsung Electronics Co., Ltd. | Backlight assembly and flat panel display apparatus having the same |
| WO2010126188A1 (en) * | 2009-04-29 | 2010-11-04 | 도레이새한 주식회사 | Light diffusing plate for lcd backlight unit |
| JP2015088269A (en) * | 2013-10-29 | 2015-05-07 | スリーエム イノベイティブ プロパティズ カンパニー | Surface illuminant device and method for manufacturing surface illuminant device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2321553A (en) | Liquid crystal displays | |
| JPS59119436U (en) | Information display device inside camera viewfinder | |
| US20070126947A1 (en) | Backlight module with light guide plate having ear and liquid crystal display with same | |
| WO2016074294A1 (en) | Backlight module | |
| JP2013048076A (en) | Lighting device, display device, and electronic equipment | |
| WO1990003138A1 (en) | Display device | |
| JPS6280623A (en) | Liquid crystal display device | |
| US3949504A (en) | Lighted display for a console | |
| JP2022045110A (en) | Backlight device and display device | |
| JPH0425728Y2 (en) | ||
| US20210080784A1 (en) | Display device | |
| JP3519895B2 (en) | Liquid crystal display | |
| JP2830428B2 (en) | Electronic device door structure | |
| CN207999704U (en) | A kind of multi-purpose Luminous decorative plate of double-side type | |
| JPS6239423Y2 (en) | ||
| JPS6015196Y2 (en) | Structure of LCD clock display | |
| JPS6315900Y2 (en) | ||
| JPH054071Y2 (en) | ||
| JP2830429B2 (en) | Electronic device door structure | |
| JPH08138428A (en) | Display device using surface light source device | |
| JPH0517738Y2 (en) | ||
| JPS5847501Y2 (en) | Vending machine product sample holding device | |
| JP2020202160A (en) | Backlight device and display device | |
| JP3018897U (en) | Calendar calendar with clock | |
| JPS60172190U (en) | Display board for signboards |