JPS6318328A - External light reflecting device for liquid crystal television receiver - Google Patents
External light reflecting device for liquid crystal television receiverInfo
- Publication number
- JPS6318328A JPS6318328A JP61162347A JP16234786A JPS6318328A JP S6318328 A JPS6318328 A JP S6318328A JP 61162347 A JP61162347 A JP 61162347A JP 16234786 A JP16234786 A JP 16234786A JP S6318328 A JPS6318328 A JP S6318328A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- panel
- external light
- main body
- light
- 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
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
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133618—Illuminating devices for ambient light
-
- 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
- G02F1/133626—Illuminating devices providing two modes of illumination, e.g. day-night
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)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、本体部に対して起伏自在にパネル部を支持し
そのパネル部内に液晶パネルを配設した液晶テレビジョ
ン受像機の外光反射装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an external light reflecting device for a liquid crystal television receiver, in which a panel portion is supported in a manner that it can be raised and lowered with respect to a main body portion, and a liquid crystal panel is disposed within the panel portion. It is something.
従来の技術
近年、液晶テレビジョン受像機は小型、軽量であること
から携帯テレビジョン受像機として注目されている。こ
の液晶テレビジ田ン受像機は、たとえば昼間は太陽光を
光源としてバンク照明し、夜間は内蔵の光源でバンク照
明して液晶パネルの明るさを保つようにしており、液晶
パネルを配設したパネル部を本体部に対して起伏自在に
支持している。2. Description of the Related Art In recent years, liquid crystal television receivers have attracted attention as portable television receivers because they are small and lightweight. This LCD TV receiver uses sunlight as a light source during the day for bank illumination, and at night it uses a built-in light source for bank illumination to maintain the brightness of the LCD panel. The part is supported so as to be able to rise and fall freely with respect to the main body part.
従来の液晶テレビジョン受像機は、本体部に対して起伏
自在に支持したパネル部に液晶パネルのバンク照明用の
光源を配設し、このパネル部に対向する本体部に外光反
射板を配置したものであり、パネル部を本体部に対して
伏せた状態ではパネル部に配設したパック照明用の光源
からの光を液晶パネルの背面に導いて液晶パネルをバッ
ク照明し、パネル部を本体部に対して起した状態では本
体部に配設した外光反射板からの光で液晶パネルをバッ
ク照明するようにしていた。In conventional LCD television receivers, a light source for illuminating the bank of LCD panels is placed on a panel that is supported in a manner that can be raised and lowered relative to the main body, and an external light reflecting plate is placed on the main body that faces this panel. When the panel section is placed face down relative to the main body, the light from the light source for pack lighting provided on the panel section is guided to the backside of the LCD panel, backlighting the LCD panel, and the panel section is placed facing the main body. When the device is in the upright position, the liquid crystal panel is back-illuminated by light from an external light reflector provided on the main body.
発明が解決しようとする問題点
しかしながら、上述した従来装置では、パネル部にバン
ク照明用の光源を配設する関係でその光源からの光を液
晶パネルの背面に導き、液晶パネルをバンク照明するだ
めの光学部材を必要とし、パネル部自体が大型化し、引
いては携帯テレビジョン受像機の大型化を招くという欠
点を有していた。そこで、バック照明用の光源を本体部
に配設し、パネル部を本体部に対して伏せた状態では本
体部に配設したバックライト用拡散板でバック照明用の
光源からの光を拡散してパネル部に配設した液晶パネル
をバンク照明し、パネル部を本体部て対して引起した状
態ではバックライト用拡散板の表面を反射面として外光
で液晶パネルをバンク照明するという試みがなされてき
たが、この場合にはパンクライト用拡散板の表面を反射
面とし、外光で液晶パネルをバンク照明する関係でどう
しても光量不足となり、液晶パネルをバック照明用の光
源でパ・ツク照明するのと同様に明るくバック照明する
ことができないという問題を有してい九本発明はこのよ
うな問題点を解消するものであり、バックライト用の拡
散板で外光照明するも液晶パネルを明るくバック照明す
ることができる液晶テレビジョン受像機の外光反射装置
を提供することを目的とするものである。Problems to be Solved by the Invention However, in the conventional device described above, since a light source for bank illumination is provided in the panel section, the light from the light source is guided to the back of the liquid crystal panel, and the liquid crystal panel cannot be illuminated in the bank. However, the panel section itself becomes large, which in turn leads to an increase in the size of the portable television receiver. Therefore, a light source for backlighting is installed in the main body, and when the panel section is placed face down relative to the main body, the light from the light source for backlighting is diffused by the backlight diffusion plate installed in the main body. Attempts have been made to perform bank illumination on the liquid crystal panel arranged in the panel section, and when the panel section is raised relative to the main body, the surface of the backlight diffuser plate is used as a reflective surface to perform bank illumination of the liquid crystal panel with external light. However, in this case, the surface of the diffuser plate for backlighting is used as a reflective surface, and the liquid crystal panel is illuminated by external light, so the amount of light is inevitably insufficient, so the liquid crystal panel is illuminated by a light source for backlighting. The present invention solves this problem, and it is possible to backlight the LCD panel brightly even though it is illuminated with external light using a diffuser plate for the backlight. It is an object of the present invention to provide an external light reflecting device for a liquid crystal television receiver that can provide illumination.
問題点を解決するだめの手段
上記の問題点を解決するため、本発明の液晶テレビジョ
ン受像機の外光反射装置は、本体部に対して起伏自在に
支持されたパネル部を有し、上記本体部の上記パネル部
との対向面部に、上記パネル部内に配設した液晶パネル
の大きさとほぼ等しい大きさのパンクライト用拡散板お
よび上記バックライト、用拡散板の周囲を取り囲むよう
に別材料で構成しだ補助反射板を配設し、上記バックラ
イト用拡散板と上記補助反射板とで外光反射面を構成し
たことを特徴とするものである。Means for Solving the Problems In order to solve the above problems, an external light reflecting device for a liquid crystal television receiver according to the present invention has a panel portion supported in a manner that it can be raised and lowered with respect to the main body portion. On the surface of the main body facing the panel section, there is provided a diffuser plate for puncture light having a size approximately equal to the size of the liquid crystal panel disposed within the panel section, and a separate material so as to surround the diffuser plate for the backlight. The invention is characterized in that an auxiliary reflecting plate is provided, and the backlight diffusion plate and the auxiliary reflecting plate constitute an external light reflecting surface.
作 用
本発明は、上記した構成によって、バックライト用拡散
板と補助反射板とが外光反射面となるため、バックライ
ト用拡散板のみでの光量不足を補助反射板；てよる外光
反射で補うこととなり、外光照明時にパネル部に配設し
た液晶パネルを明るくバック照明することができること
になる。Function: With the above-described configuration, the backlight diffuser and the auxiliary reflector serve as external light reflecting surfaces. This means that the liquid crystal panel disposed in the panel section can be brightly backlit during external light illumination.
実施例
以下、本発明の実施例について図面を参照しながら説明
する。第１図〜第４図は本発明の一実施例を示しており
、本体部６には液晶パネル４を有するパネル部６が起伏
自在に支持されている。そして、上記大体部５のパネル
部６との対向面部には上記液晶パネル４と等しい大きさ
のバックライト用拡散板１と、このバックライト用拡散
板１の周囲を取り囲むように補助反射板２とが配設され
ている。そして、上記パンクライト用拡散板１の背面に
はバンク照明用の光源３およびこの光源３からの光をパ
ンクライト用拡散板１へ導くだめの反射板７を配設して
いる。上記バックライト用拡散板１は光源３から出た光
を拡散、透過して液晶パネル４の裏面に照射するもので
あるが、外光動作時の場合にバックライト用拡散板１は
外光反射面として作用する。補助反射板２の反射面２は
アルミニウム又は金属蒸着を施したフィルム等で表面の
反射特性はバックライト用拡散板の反射特性と近似させ
ており、液晶パネルの照射時に光むらとならないように
しである。EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings. 1 to 4 show an embodiment of the present invention, in which a panel section 6 having a liquid crystal panel 4 is supported on a main body section 6 so as to be able to rise and fall freely. A backlight diffuser 1 having the same size as the liquid crystal panel 4 is provided on the surface of the main body 5 facing the panel 6, and an auxiliary reflector 2 surrounds the backlight diffuser 1. and are provided. A light source 3 for bank illumination and a reflecting plate 7 for guiding the light from the light source 3 to the diffuser plate 1 for puncture lights are disposed on the back side of the diffuser plate 1 for puncture lights. The backlight diffusion plate 1 diffuses and transmits the light emitted from the light source 3 and illuminates the back surface of the liquid crystal panel 4. However, when operating with external light, the backlight diffusion plate 1 reflects external light. Acts as a surface. The reflective surface 2 of the auxiliary reflector 2 is made of aluminum or metal vapor-deposited film, etc., and the reflection characteristics of the surface are approximated to those of a backlight diffuser plate, so as to prevent uneven light when irradiating the liquid crystal panel. be.
このような構成において、本体部５に対してパネル部６
が伏せた状態にあるとさ、パネル部６の液晶パネル４は
本体部６のバックライト用拡散板１と面対向されており
、光源３は点灯されている。In such a configuration, the panel portion 6 is connected to the main body portion 5.
When it is in the face down state, the liquid crystal panel 4 of the panel section 6 faces the backlight diffusion plate 1 of the main body section 6, and the light source 3 is turned on.
したがって、光源３から出た光はバックライト用拡散板
１で拡散されて液晶パネル４の裏面を照明するため、液
晶パネル４を明るくバック照明することができる。一方
、本体部５に対してパネル部６を引き起した状態である
とき、光源３は消灯されており、第４図に破線で表わす
外光は本体部５の反射面で反射されてパネル部らの液晶
パネル４を照明し、液晶パネル４を透過し所定の画面を
得る。この場合、本体部６の反射面はバックライト用拡
散板１とその拡散板１の周囲に設けた補助反射板２とで
構成されており、バックライト用拡散板１での外光反射
を補助反射板２での外光反射で光量不足となることのな
いように補っている。したがって、上記バックライト用
拡散板１と補助反射板２にて構成される反射面で外光照
明される場合にもパネル部６の液晶パネル４は明るくパ
ンク照明され、また、補助反射板２の反射特性はバック
ライト用拡散板１の反射特性に等しく光むらのないもの
である。Therefore, the light emitted from the light source 3 is diffused by the backlight diffusion plate 1 and illuminates the back surface of the liquid crystal panel 4, so that the liquid crystal panel 4 can be brightly backlit. On the other hand, when the panel section 6 is raised relative to the main body section 5, the light source 3 is turned off, and the external light shown by the broken line in FIG. The light illuminates the liquid crystal panels 4, and the light passes through the liquid crystal panels 4 to obtain a predetermined screen. In this case, the reflective surface of the main body 6 is composed of a backlight diffuser 1 and an auxiliary reflector 2 provided around the diffuser 1, which assists the backlight diffuser 1 in reflecting external light. This is compensated for so that the amount of light is not insufficient due to the reflection of external light on the reflector plate 2. Therefore, even when the reflective surface constituted by the backlight diffuser 1 and the auxiliary reflector 2 is illuminated with external light, the liquid crystal panel 4 of the panel section 6 is brightly illuminated, and the auxiliary reflector 2 is The reflection characteristics are equal to those of the backlight diffusion plate 1, and there is no light unevenness.
発明の効果
以上のように本発明によれば、本体部に配設したバック
ライト用拡散板の周囲を取り囲もように補助反射板を設
けたので、外光を反射してパネル部に設けた液晶パネル
をバック照明する時、バックライト用拡散板による外光
反射での光量不足を補助反射板での外光反射によって補
うことができ、もってパネル部に設けた液晶パネルを明
るくバック照明することができると共にパネル部側にバ
ック照明用の光源およびその付帯光学部材を配設する必
要がなく液晶テレビジョン受像機自体の小型、薄型化を
図ることができるものである。Effects of the Invention As described above, according to the present invention, since the auxiliary reflector is provided to surround the backlight diffuser provided in the main body, it reflects external light and prevents the backlight from being provided in the panel. When backlighting a liquid crystal panel, the lack of light intensity due to the reflection of external light by the backlight diffuser can be compensated for by the reflection of external light by the auxiliary reflector, thereby brightly backlighting the liquid crystal panel installed in the panel section. In addition, there is no need to provide a light source for back illumination and its incidental optical members on the panel side, and the liquid crystal television receiver itself can be made smaller and thinner.
第１図は本発明の液晶テレビジョン受像機の外光反射装
置の主要部を示す平面図、第２図は同装置の要部の組立
斜視図、第３図、第４図は同装置の使用状態を示す説明
図である。
１・・・・・・バックライト用拡散板、２・・・・・・
補助反射板、３・・・・・・光源、４・・・・・・液晶
パネル、５・・・・・・本体部、６・・・・・・パネル
部。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名４１
図
第２図FIG. 1 is a plan view showing the main parts of the external light reflecting device of the liquid crystal television receiver of the present invention, FIG. 2 is an assembled perspective view of the main parts of the device, and FIGS. 3 and 4 are the main parts of the device. It is an explanatory diagram showing a usage state. 1... Diffusion plate for backlight, 2...
Auxiliary reflector, 3...Light source, 4...Liquid crystal panel, 5...Main unit, 6...Panel part. Name of agent: Patent attorney Toshio Nakao and 1 other person 41
Figure 2
Claims (2)
有し、上記本体部の上記パネル部との対向面部に、上記
パネル部内に配設した液晶パネルの大きさとほぼ等しい
大きさのバックライト用拡散板および上記バックライト
用拡散板の周囲を取り囲むように別材料で構成した補助
反射板を配設し、上記バックライト用拡散板と上記補助
反射板とで外光反射面を構成したことを特徴とする液晶
テレビジョン受像機の外光反射装置。(1) It has a panel part that is supported in a manner that it can be raised and lowered with respect to the main body part, and a panel part having a size that is approximately the same as the size of the liquid crystal panel disposed in the panel part is provided on the surface part of the main body part that faces the above-mentioned panel part. A backlight diffusion plate and an auxiliary reflection plate made of a different material are arranged to surround the backlight diffusion plate, and the backlight diffusion plate and the auxiliary reflection plate constitute an external light reflecting surface. An external light reflecting device for a liquid crystal television receiver, characterized by:
反射板の反射性能（反射率、反射分光特性）を同一とし
たことを特徴とする特許請求の範囲第１項記載の液晶テ
レビジョン受像機の外光反射装置。(2) A liquid crystal television according to claim 1, characterized in that the backlight diffuser and the auxiliary reflector as external light reflecting surfaces have the same reflection performance (reflectance, reflection spectral characteristics). External light reflecting device for the receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162347A JPH0652346B2 (en) | 1986-07-10 | 1986-07-10 | External light reflection device for LCD television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61162347A JPH0652346B2 (en) | 1986-07-10 | 1986-07-10 | External light reflection device for LCD television receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6318328A true JPS6318328A (en) | 1988-01-26 |
| JPH0652346B2 JPH0652346B2 (en) | 1994-07-06 |
Family
ID=15752829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61162347A Expired - Fee Related JPH0652346B2 (en) | 1986-07-10 | 1986-07-10 | External light reflection device for LCD television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0652346B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777704A (en) * | 1996-10-30 | 1998-07-07 | International Business Machines Corporation | Backlighting an LCD-based notebook computer under varying ambient light conditions |
| JP2008524053A (en) * | 2004-12-15 | 2008-07-10 | イネルジー オートモーティヴ システムズ リサーチ | Device for plugging fuel tank filling pipe |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100309412A1 (en) * | 2009-06-05 | 2010-12-09 | Qualcomm Mems Technologies, Inc. | Ambient light backlight for transmissive displays |
-
1986
- 1986-07-10 JP JP61162347A patent/JPH0652346B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5777704A (en) * | 1996-10-30 | 1998-07-07 | International Business Machines Corporation | Backlighting an LCD-based notebook computer under varying ambient light conditions |
| KR100260869B1 (en) * | 1996-10-30 | 2000-07-01 | 포만 제프리 엘 | Backlighting an lcd-based notebook computer under varying ambient light conditions |
| JP2008524053A (en) * | 2004-12-15 | 2008-07-10 | イネルジー オートモーティヴ システムズ リサーチ | Device for plugging fuel tank filling pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0652346B2 (en) | 1994-07-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |