JPH10206846A - Liquid crystal display device and electronic equipment using liquid crystal display device - Google Patents
Liquid crystal display device and electronic equipment using liquid crystal display deviceInfo
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- JPH10206846A JPH10206846A JP10036477A JP3647798A JPH10206846A JP H10206846 A JPH10206846 A JP H10206846A JP 10036477 A JP10036477 A JP 10036477A JP 3647798 A JP3647798 A JP 3647798A JP H10206846 A JPH10206846 A JP H10206846A
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- liquid crystal
- display device
- crystal display
- layer
- light
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は液晶表示装置の構造及び
それを有する電子機器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device and an electronic apparatus having the same.
【０００２】[0002]
【従来の技術】従来の液晶表示装置は電極を有する一対
の基板間に液晶層を挟持した液晶セルと、これを挟んで
両側に配置した２つの偏光層からなり、液晶表示装置を
透過型で用いる場合には、液晶セルの目視側と反対側の
偏光層の外側に平面状の発光体を設置した構造をしてい
た。また、液晶表示装置を反射型で用いる場合には、液
晶セルの目視側と反対側の偏光層の外側に反射層を配置
した構造をしていた。しかし、この液晶表示装置では液
晶表示装置に入射した光が再び液晶表示装置を出るまで
に偏光層を４回も通過するため表示が暗くなってしまう
という問題を有していた。この様な問題を解決する手段
として近年、図５に示すような液晶層５２を挟むように
偏光層５１と反射層５３を配置した新しい反射型液晶モ
ードが提案されている。このモードの液晶表示装置は従
来の液晶表示装置と異なり偏光層が１層しかないため、
液晶表示装置に入射した光が再び液晶表示装置を出るま
でに偏光層を通過する回数は２回となり明るい表示が得
られるというもので、従来の液晶表示装置に比べ倍近い
明るさの表示が可能となった。2. Description of the Related Art A conventional liquid crystal display device comprises a liquid crystal cell having a liquid crystal layer sandwiched between a pair of substrates having electrodes, and two polarizing layers disposed on both sides of the liquid crystal cell. In the case of using the liquid crystal cell, a structure in which a planar light emitting body is provided outside the polarizing layer on the side opposite to the viewing side of the liquid crystal cell has been employed. Further, when the liquid crystal display device is used in a reflection type, a structure in which a reflection layer is disposed outside the polarizing layer on the side opposite to the viewing side of the liquid crystal cell has been employed. However, this liquid crystal display device has a problem that the display becomes dark because light incident on the liquid crystal display device passes through the polarizing layer four times before exiting the liquid crystal display device again. As a means for solving such a problem, a new reflective liquid crystal mode in which a polarizing layer 51 and a reflective layer 53 are arranged so as to sandwich a liquid crystal layer 52 as shown in FIG. Since the liquid crystal display device of this mode has only one polarizing layer unlike the conventional liquid crystal display device,
Light incident on the liquid crystal display device passes through the polarizing layer twice before exiting the liquid crystal display device again, resulting in a brighter display, and a display nearly twice as bright as the conventional liquid crystal display device is possible. It became.
【０００３】[0003]
【発明が解決しようとする課題】しかし、前述の透過型
の液晶表示装置を電子機器、特に携帯用パソコンなどに
組み込んで使用した場合、電子機器に外部より電源を供
給できるときは問題無いが、外部電源を使用せず、電子
機器内蔵のバッテリーを使用するときは、内蔵バッテリ
ーの容量が小さいため、電子機器の使用可能時間が短く
なってしまうという欠点を有していた。However, when the above-mentioned transmissive liquid crystal display device is incorporated in an electronic device, particularly a portable personal computer, and used, there is no problem when power can be supplied to the electronic device from the outside. When using a battery built into an electronic device without using an external power supply, the capacity of the built-in battery is small, so that there is a disadvantage that the usable time of the electronic device is shortened.
【０００４】また、前述の偏光層が１層しかない新しい
反射型の液晶表示装置を電子機器に組み込んで使用した
場合、暗い環境下で用いたときには、液晶表示装置に入
射する光の絶対量が低下するため、表示が暗く、内容が
認識しにくいという欠点を有していた。When a new reflection type liquid crystal display device having only one polarizing layer is used in an electronic apparatus, when used in a dark environment, the absolute amount of light incident on the liquid crystal display device is reduced. Therefore, the display is dark and the contents are difficult to recognize.
【０００５】そこで、本発明は上記欠点を解決するため
に、液晶表示装置を、液晶セル背面の発光体を点灯状態
としたときは透過型として、非点灯状態としたときは偏
光層が１層しかない新しい反射型として用いるものであ
り、その目的とするところは、明るい環境下では反射型
として用いることにより電子機器の使用可能時間を延ば
し、暗い環境下では透過型として用いることにより明る
い表示が得られる液晶表示装置及びそれを用いた電子機
器を提供するところにある。In order to solve the above-mentioned drawbacks, the present invention provides a liquid crystal display device which is of a transmissive type when the illuminant on the back of the liquid crystal cell is turned on, and has a single polarizing layer when it is not illuminated. The purpose is to use it as a reflective type in a bright environment to extend the usable time of electronic devices in a bright environment, and to use a transmissive type in a dark environment to provide a bright display. It is an object of the present invention to provide an obtained liquid crystal display device and an electronic device using the same.
【０００６】[0006]
【課題を解決するための手段】本発明の液晶表示装置
は、電極を有する一対の基板間に液晶層を挟持し、かつ
液晶層を挟むように一対の偏光層を配置する液晶表示装
置において、目視側とは反対側の偏光層と液晶層との間
に入射光の一部を透過する性質を有する光反射層を設け
たことを特徴とする。さらに本発明の電子機器は、この
液晶表示装置を電子機器に用いることを特徴とする。According to a liquid crystal display device of the present invention, a liquid crystal display device comprises a pair of substrates having electrodes, wherein a liquid crystal layer is sandwiched between the pair of substrates, and a pair of polarizing layers are arranged so as to sandwich the liquid crystal layer. A light reflection layer having a property of transmitting part of incident light is provided between the polarizing layer and the liquid crystal layer on the side opposite to the viewing side. Further, an electronic apparatus according to the present invention is characterized in that the liquid crystal display device is used for the electronic apparatus.
【０００７】[0007]
【実施例】以下本発明の一実施例を説明する。An embodiment of the present invention will be described below.
【０００８】〔実施例１〕図１に本発明の一実施例であ
る液晶表示装置の断面図を示す。３は液晶セルであり、
セルギャップは８μｍ、液晶のΔｎは０．１で上側基板
（目視側）から下側基板に向かって左に２６０゜ツイス
トしている。１は上側の偏光板でありその偏光軸と上側
基板のラビング軸の角度は３２゜である。２は一軸延伸
フィルムであり、リターデーションの値は０．３２μｍ
で延伸方向と上側ラビング軸の角度は２４゜である。４
は半透過反射板でありその透過率は４０％である。ま
た、５は下側の偏光板でありその偏光軸と上側基板のラ
ビング軸の角度は１０７゜である。FIG. 1 is a sectional view of a liquid crystal display device according to an embodiment of the present invention. 3 is a liquid crystal cell,
The cell gap is 8 μm, the Δn of the liquid crystal is 0.1, and the liquid crystal is twisted 260 ° to the left from the upper substrate (viewing side) to the lower substrate. Reference numeral 1 denotes an upper polarizing plate, and the angle between its polarization axis and the rubbing axis of the upper substrate is 32 °. 2 is a uniaxially stretched film, and the retardation value is 0.32 μm
And the angle between the stretching direction and the upper rubbing axis is 24 °. 4
Is a transflective plate whose transmittance is 40%. Reference numeral 5 denotes a lower polarizing plate, and the angle between its polarization axis and the rubbing axis of the upper substrate is 107 °.
【０００９】本実施例の液晶表示装置を明るい環境下で
使用するときは、パネル背面の発光体を非点灯状態にし
て使用する、その場合、液晶表示装置は反射型の液晶表
示装置となる。すなわち、上側偏光板より入射した光は
一軸延伸フィルム、液晶パネルを通過した後、反射板で
反射し、再び液晶パネル、一軸延伸フィルム、上側偏光
板を通って液晶表示装置より出てくる。このとき得られ
た表示のコントラスト比は約１：１０であり、明るさも
従来の偏光層を２層有する反射型液晶表示装置の約１．
５倍と明るい表示が得られた。また、この場合は、パネ
ル背面の発光体を非点灯状態とするために使用する電力
を節約することができ、液晶表示装置を電子機器、特に
携帯用パソコンに組み込んで電子機器内蔵のバッテリー
により駆動したとき、その使用可能時間を延ばすことが
できたことは言うまでもなく明らかである。When the liquid crystal display device of this embodiment is used in a bright environment, the light emitting body on the back of the panel is used in a non-lighting state. In this case, the liquid crystal display device is a reflection type liquid crystal display device. That is, the light incident from the upper polarizer passes through the uniaxially stretched film and the liquid crystal panel, is reflected by the reflector, and emerges again from the liquid crystal display device through the liquid crystal panel, the uniaxially stretched film and the upper polarizer. The contrast ratio of the display obtained at this time is about 1:10, and the brightness is about 1.10 of the conventional reflection type liquid crystal display device having two polarizing layers.
A display as bright as 5 times was obtained. Also, in this case, it is possible to save the power used to turn off the illuminant on the back of the panel, and to integrate the liquid crystal display device into an electronic device, particularly a portable personal computer, and drive the liquid crystal display device with a battery built into the electronic device. It is, of course, clear that the usable time can be extended.
【００１０】一方、暗い環境下で使用する際は、発光体
を点灯状態にする。この場合は、液晶表示装置は透過型
として用いられる。すなわち、発光体を出た光は下側の
偏光板を通過した後、半透過反射板、液晶パネル、一軸
延伸フィルム、上側偏光板の順に通過して出てくる。こ
のとき得られた表示のコントラスト比は約１：５であ
り、明るさは従来の透過型液晶表示装置の約７割と若干
低下するものの、まったく問題の無いレベルであった。On the other hand, when used in a dark environment, the luminous body is turned on. In this case, the liquid crystal display device is used as a transmission type. That is, the light exiting the light emitter passes through the lower polarizing plate, and then passes through the semi-transmissive reflecting plate, the liquid crystal panel, the uniaxially stretched film, and the upper polarizing plate in this order. The contrast ratio of the display obtained at this time was about 1: 5, and the brightness was slightly reduced to about 70% of that of the conventional transmissive liquid crystal display device, but was at a level without any problem.
【００１１】〔実施例２〕図３に本発明の一実施例であ
る液晶表示装置の断面図を示す。２３は液晶セルであ
り、セルギャップは８μｍ、液晶のΔｎは０．１で上側
基板（目視側）から下側基板に向かって左に２６０゜ツ
イストしている。２１は上側の偏光板でありその偏光軸
と上側基板のラビング軸の角度は３２゜である。２２は
一軸延伸フィルムであり、リターデーションの値は０．
３２μｍで延伸方向と上側ラビング軸の角度は２４゜で
ある。２４は半透過反射板でありその透過率は４０％で
ある。また、２６は下側の偏光板でありその偏光軸と上
側基板のラビング軸の角度は１０７゜である。２５は半
透過反射板と下側偏光板の間に設けられた一軸延伸フィ
ルムでありそのリターデーションは０．１２μｍで延伸
方向と上側ラビング軸との角度は１５５゜である。[Embodiment 2] FIG. 3 is a sectional view of a liquid crystal display device according to an embodiment of the present invention. Reference numeral 23 denotes a liquid crystal cell having a cell gap of 8 μm, a Δn of the liquid crystal of 0.1, and a twist of 260 ° to the left from the upper substrate (viewing side) to the lower substrate. Reference numeral 21 denotes an upper polarizer, and the angle between the polarization axis of the upper polarizer and the rubbing axis of the upper substrate is 32 °. 22 is a uniaxially stretched film, and the retardation value is 0.2.
At 32 μm, the angle between the stretching direction and the upper rubbing axis is 24 °. Numeral 24 denotes a semi-transmissive reflection plate having a transmittance of 40%. Reference numeral 26 denotes a lower polarizing plate, and the angle between its polarization axis and the rubbing axis of the upper substrate is 107 °. Reference numeral 25 denotes a uniaxially stretched film provided between the transflector and the lower polarizing plate. The retardation of the film is 0.12 μm, and the angle between the stretching direction and the upper rubbing axis is 155 °.
【００１２】本実施例の液晶表示装置を実施例１同様
に、パネル背面の発光体を非点灯状態として使用したと
き、得られた表示のコントラスト比は約１：１０であ
り、明るさも従来の偏光層を２層有する反射型液晶表示
装置の約１．５倍と明るい表示が得られた。電子機器に
組み込んで使用した場合も、実施例１同様に電子機器内
蔵のバッテリーの使用可能時間を延ばすことができたこ
とは言うまでもなく明らかである。When the liquid crystal display device of the present embodiment is used with the illuminant on the back of the panel turned off in the same manner as in the first embodiment, the contrast ratio of the obtained display is about 1:10, and the brightness is the same as that of the conventional device. A display as bright as about 1.5 times that of a reflection type liquid crystal display device having two polarizing layers was obtained. It is obvious that, even when the battery is used by being incorporated in an electronic device, the usable time of the battery built in the electronic device can be extended similarly to the first embodiment.
【００１３】一方、発光体を点灯状態にして使用したと
き得られた表示のコントラスト比は約１：１０であり、
明るさは従来の透過型液晶表示装置の約７割と若干低下
するものの、実施例１同様まったく問題の無いレベルで
あった。On the other hand, the contrast ratio of a display obtained when the light-emitting body is used in a lighting state is about 1:10,
Although the brightness was slightly reduced to about 70% of that of the conventional transmissive liquid crystal display device, it was at a level having no problem as in Example 1.
【００１４】〔実施例３〕上述の実施例１では、液晶パ
ネルと上側偏光板の間に一軸延伸フィルムを挿入し、実
施例２では、液晶パネルと上側偏光板の間と半透過反射
板と下側偏光板の間に一軸延伸フィルムを挿入している
が、一軸延伸フィルムを用いない場合も同等な効果は得
られ、上側偏光板、液晶パネル、半透過反射板、下側偏
光板の間のどの位置に一軸延伸フィルムを挿入しても同
等な効果が得られる。また、それぞれを組み合わせても
同等な効果が得られる。さらに、一ヶ所に挿入する一軸
延伸フィルムの枚数は一枚である必要はなく、複数枚で
も同等な効果が得られることは言うまでもない。Embodiment 3 In the above-described embodiment 1, a uniaxially stretched film is inserted between the liquid crystal panel and the upper polarizing plate. In the embodiment 2, between the liquid crystal panel and the upper polarizing plate and between the transflective plate and the lower polarizing plate. Although a uniaxially stretched film is inserted into the film, the same effect is obtained even when the uniaxially stretched film is not used, and the uniaxially stretched film is placed at any position between the upper polarizing plate, the liquid crystal panel, the transflective plate, and the lower polarizing plate. The same effect can be obtained by inserting. In addition, the same effect can be obtained by combining them. Furthermore, the number of uniaxially stretched films to be inserted in one place does not need to be one, and it goes without saying that the same effect can be obtained with a plurality of films.
【００１５】〔実施例４〕半透過反射板としては、一軸
延伸フィルムにアルミなどの金属を蒸着したものを用い
ても、実施例１〜３と同等な効果が得られることは明ら
かであり、また、この場合は一軸延伸フィルムと半透過
反射層が一体となるため、薄型化、信頼性向上などの利
点も有る。Example 4 It is apparent that the same effect as in Examples 1 to 3 can be obtained even when a uniaxially stretched film obtained by vapor-depositing a metal such as aluminum is used as the transflective plate. In this case, since the uniaxially stretched film and the transflective layer are integrated, there are also advantages such as reduction in thickness and improvement in reliability.
【００１６】[0016]
【発明の効果】以上述べたように本発明の液晶表示装置
は、電極を有する一対の基板間に液晶層を挟持し、かつ
液晶層を挟むように一対の偏光層を配置する液晶表示装
置において、目視側とは反対側の偏光層と液晶層との間
に入射光の一部を透過する性質を有する光反射層を設
け、液晶パネル背面の発光体を点灯、非点灯間で切り替
えることにより、液晶表示装置を透過型、反射型の両方
で使用することが可能となり、この液晶表示装置を電子
機器に組み込んだ場合、明るい環境下では背面の発光体
を非点灯とし反射型で用いることにより、電子機器内蔵
のバッテリーの使用可能時間を延ばすことが可能とな
り、また、暗い環境下では背面の発光体を点灯状態とす
ることにより明るく、見やすい表示を得ることが可能と
なるという効果を有する。As described above, the liquid crystal display device of the present invention is a liquid crystal display device in which a liquid crystal layer is sandwiched between a pair of substrates having electrodes, and a pair of polarizing layers is arranged so as to sandwich the liquid crystal layer. By providing a light reflection layer having the property of transmitting part of incident light between the polarizing layer and the liquid crystal layer on the side opposite to the viewing side, and by switching the light emitter on the back of the liquid crystal panel between lighting and non-lighting. It is possible to use the liquid crystal display device in both the transmission type and the reflection type, and when this liquid crystal display device is incorporated in electronic equipment, in a bright environment, the backside illuminant is turned off and the reflection type is used. In addition, it is possible to extend the usable time of the battery built into the electronic device, and also to provide a bright and easy-to-view display by turning on the light-emitting body on the back in a dark environment. .
【図１】 本発明の一実施例を示す断面図。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】 図１の液晶パネルにおける偏光板の偏光軸，
ラビング方向，位相差フィルムの延伸軸方向の関係を示
す図。FIG. 2 shows a polarization axis of a polarizing plate in the liquid crystal panel of FIG.
The figure which shows the relationship between the rubbing direction and the stretching axis direction of the retardation film.
【図３】 本発明の一実施例を示す断面図。FIG. 3 is a sectional view showing one embodiment of the present invention.
【図４】 図３の液晶パネルにおける偏光板の偏光軸，
ラビング方向，位相差フィルムの延伸軸方向の関係を示
す図。FIG. 4 shows a polarization axis of a polarizing plate in the liquid crystal panel of FIG.
The figure which shows the relationship between the rubbing direction and the stretching axis direction of the retardation film.
【図５】 従来の液晶表示装置を示す図。FIG. 5 is a diagram showing a conventional liquid crystal display device.
１．偏光板 ２．一軸延伸フィルム ３．液晶パネル ４．半透過反射板 ５．偏光板 ６．発光体 １１．上側基板のラビング方向 １２．一軸延伸フィルムの延伸方向 １３．上側偏光板の偏光軸の方向 １４．下側基板のラビング方向 １５．下側偏光板の偏光軸の方向 １６．上側基板のラビング軸と一軸延伸フィルムの延伸
方向のなす角。 １７．上側基板のラビング軸と上側偏光板の偏光軸のな
す角。 １８．上側基板のラビング軸と下側偏光板の偏光軸のな
す角。 １９．上側基板のラビング軸と下側基板のラビング軸の
なす角。 ２１．偏光板 ２２．一軸延伸フィルム ２３．液晶パネル ２４．一軸延伸フィルム ２５．半透過反射板 ２６．偏光板 ２７．発光体 ３１．上側基板のラビング方向 ３２．上側一軸延伸フィルムの延伸方向 ３３．上側偏光板の偏光軸の方向 ３４．下側基板のラビング方向 ３５．下側偏光板の偏光軸の方向 ３６．下側一軸延伸フィルムの延伸方向 ３７．上側基板のラビング軸と上側一軸延伸フィルムの
延伸方向のなす角。 ３８．上側基板のラビング軸と上側偏光板の偏光軸のな
す角。 ３９．上側基板のラビング軸と下側偏光板の偏光軸のな
す角。 ４０．上側基板のラビング軸と下側一軸延伸フィルムの
延伸方向のなす角。 ４１．上側基板のラビング軸と下側基板のラビング軸の
なす角。 ５１．偏光板 ５２．液晶パネル ５３．反射板1. Polarizing plate 2. 2. Uniaxially stretched film Liquid crystal panel 4. Transflective plate 5. Polarizing plate 6. Light-emitting body 11. Rubbing direction of upper substrate 12. 12. Stretching direction of uniaxially stretched film 13. Polarization axis direction of upper polarizer 14. Rubbing direction of lower substrate 15. Polarization axis direction of lower polarizing plate The angle between the rubbing axis of the upper substrate and the stretching direction of the uniaxially stretched film. 17． The angle between the rubbing axis of the upper substrate and the polarization axis of the upper polarizer. 18. The angle between the rubbing axis of the upper substrate and the polarization axis of the lower polarizer. 19. The angle between the rubbing axis of the upper substrate and the rubbing axis of the lower substrate. 21. Polarizing plate 22. Uniaxially stretched film 23. Liquid crystal panel 24. Uniaxially stretched film 25. Transflective plate 26. Polarizing plate 27. Light emitter 31. Rubbing direction of upper substrate 32. 30. Stretching direction of upper uniaxially stretched film Direction of polarization axis of upper polarizer 34. Rubbing direction of lower substrate 35. 36. Direction of polarization axis of lower polarizing plate 37. Stretching direction of lower uniaxially stretched film The angle between the rubbing axis of the upper substrate and the stretching direction of the upper uniaxially stretched film. 38. The angle between the rubbing axis of the upper substrate and the polarization axis of the upper polarizer. 39. The angle between the rubbing axis of the upper substrate and the polarization axis of the lower polarizer. 40. The angle between the rubbing axis of the upper substrate and the stretching direction of the lower uniaxially stretched film. 41. The angle between the rubbing axis of the upper substrate and the rubbing axis of the lower substrate. 51. Polarizing plate 52. Liquid crystal panel 53. reflector
【手続補正書】[Procedure amendment]
【提出日】平成１０年３月１１日[Submission date] March 11, 1998
【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】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【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】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】[0006]
【課題を解決するための手段】本発明の液晶表示装置
は、液晶パネルの一方の側に設けた発光体が点灯状態の
ときには前記発光体を出た光を前記液晶パネルと発光体
との間を透過させることによって透過型の表示を行い、
前記発光体が非点灯状態であるときに前記液晶パネルか
ら前記発光体に向かう光を前記液晶パネルと発光体との
間で反射させることによって反射型の表示を行う液晶表
示装置において、前記液晶パネルに対して前記発光体と
は反対の側には偏光層及び光学異方性を有する位相差層
を設けたことを特徴とする。また、前記液晶パネルと前
記発光体との間にも光学異方性を有する位相差層を設け
たことを特徴とする。本発明の電子機器は、液晶パネル
の背側に設けた発光体が点灯状態のときには前記発光体
を出た光を前記液晶パネルと発光体との間を透過させる
ことによって透過型の表示を行い、前記発光体が非点灯
状態であるときに前記液晶パネルから前記発光体に向か
う光を前記液晶パネルと発光体との間で反射させること
によって反射型の表示を行う液晶表示装置を有し、バッ
テリーにより電源が供給される電子機器において、前記
液晶パネルに対して前記発光体とは反対の側には偏光層
及び光学異方性を有する位相差層を設けたことを特徴と
する。According to the liquid crystal display device of the present invention, when a luminous body provided on one side of a liquid crystal panel is in a lighting state, light emitted from the luminous body is transmitted between the liquid crystal panel and the luminous body. Is transmitted to display a transmissive display,
A liquid crystal display device that performs a reflective display by reflecting light traveling from the liquid crystal panel toward the light emitting body between the liquid crystal panel and the light emitting body when the light emitting body is in a non-lighting state. On the other hand, a polarizing layer and a retardation layer having optical anisotropy are provided on the side opposite to the light emitting body. Further, a retardation layer having optical anisotropy is provided between the liquid crystal panel and the luminous body. The electronic device of the present invention performs a transmissive display by transmitting light emitted from the light emitting body between the liquid crystal panel and the light emitting body when the light emitting body provided on the back side of the liquid crystal panel is turned on. A liquid crystal display device that performs reflective display by reflecting light traveling from the liquid crystal panel toward the light emitting body between the liquid crystal panel and the light emitting body when the light emitting body is in a non-lighting state, In an electronic device supplied with power from a battery, a polarizing layer and a retardation layer having optical anisotropy are provided on a side of the liquid crystal panel opposite to the light emitting body.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１６】[0016]
【発明の効果】以上述べてきたように本発明の液晶表示
装置及び電子機器は、液晶パネルの一方の側に設けた発
光体が点灯状態のときには前記発光体を出た光を液晶パ
ネルと発光体との間を透過させることによって透過型の
表示を行い、発光体が非点灯状態であるときに液晶パネ
ルから前記発光体に向かう光を液晶パネルと発光体との
間で反射させることによって反射型の表示を行う液晶表
示装置において、液晶パネルに対して前記発光体とは反
対の側には偏光層及び光学異方性を有する位相差層を設
けたので、明るい環境下では反射型で用いることにより
消費電力を抑えることができるとともに、暗い環境下で
は発光体を点灯状態とすることによって明るい表示がで
きる液晶表示装置の反射表示及び透過表示の両方の表示
の色補正が可能となる。As described above, in the liquid crystal display device and the electronic apparatus according to the present invention, when the illuminant provided on one side of the liquid crystal panel is in a lighting state, the light emitted from the illuminant is emitted to the liquid crystal panel. A transmissive display is performed by transmitting light through the body, and light is reflected from the liquid crystal panel by reflecting light from the liquid crystal panel toward the light emitting body when the light emitting body is in a non-lighting state. In a liquid crystal display device that performs type display, a polarizing layer and a retardation layer having optical anisotropy are provided on the side opposite to the light emitting body with respect to the liquid crystal panel, so that the liquid crystal panel is used in a reflective type under a bright environment. This makes it possible to reduce power consumption, and also enables color correction of both reflective display and transmissive display of a liquid crystal display device that can display bright by turning on the illuminant in a dark environment. That.
Claims (3)
し、かつ前記液晶層を挟むように一対の偏光層を配置す
る液晶表示装置において、前記一対の偏光層のうちの一
方の偏光層と前記液晶層の間に入射光の一部を透過する
性質を有する光反射層を設けたことを特徴とする液晶表
示装置。1. A liquid crystal display device in which a liquid crystal layer is sandwiched between a pair of substrates having electrodes, and a pair of polarizing layers is arranged so as to sandwich the liquid crystal layer. A liquid crystal display device comprising a light reflection layer having a property of transmitting a part of incident light between the liquid crystal layer and the liquid crystal layer.
有する光反射層と前記液晶層に対し光反射板側に設けら
れた偏光層との間、前記光反射層と前記液晶層との間、
前記液晶層と前記液晶層に対し光反射層側と反対側に設
けられた偏光層との間の少なくとも１箇所に光学異方性
を有する位相差層を少なくとも一層以上設けたことを特
徴とする請求項１記載の液晶表示装置。2. The liquid crystal display device according to claim 1, wherein the light reflection layer and the liquid crystal are disposed between a light reflection layer having a property of transmitting a part of incident light and a polarization layer provided on a light reflection plate side of the liquid crystal layer. Between the layers,
At least one retardation layer having optical anisotropy is provided at at least one position between the liquid crystal layer and the polarizing layer provided on the side opposite to the light reflection layer with respect to the liquid crystal layer. The liquid crystal display device according to claim 1.
することを特徴とする液晶表示装置を用いた電子機器。3. An electronic apparatus using the liquid crystal display device, comprising the liquid crystal display device according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10036477A JP3022465B2 (en) | 1998-02-18 | 1998-02-18 | Liquid crystal display device and electronic device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10036477A JP3022465B2 (en) | 1998-02-18 | 1998-02-18 | Liquid crystal display device and electronic device using the same |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04666091A Division JP3233649B2 (en) | 1991-03-12 | 1991-03-12 | Liquid crystal display device and electronic device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10206846A true JPH10206846A (en) | 1998-08-07 |
| JP3022465B2 JP3022465B2 (en) | 2000-03-21 |
Family
ID=12470904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10036477A Expired - Lifetime JP3022465B2 (en) | 1998-02-18 | 1998-02-18 | Liquid crystal display device and electronic device using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3022465B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6147734A (en) * | 1998-12-17 | 2000-11-14 | Dai Nippon Printing Co., Ltd. | Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device |
| WO2001090788A1 (en) * | 2000-05-23 | 2001-11-29 | Nippon Oil Corporation | Circular polarization plate and liquid crystal display |
| WO2002006863A1 (en) * | 2000-07-14 | 2002-01-24 | Nippon Oil Corporation | Circular polarization plate and liquid crystal display device |
| KR100337886B1 (en) * | 1999-12-15 | 2002-05-23 | 김순택 | Liquid Cristal Display |
| USRE41678E1 (en) | 1998-11-02 | 2010-09-14 | Hitachi, Ltd. | Half reflection type liquid crystal display device having matched phase of transmitted and reflected light |
-
1998
- 1998-02-18 JP JP10036477A patent/JP3022465B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE41678E1 (en) | 1998-11-02 | 2010-09-14 | Hitachi, Ltd. | Half reflection type liquid crystal display device having matched phase of transmitted and reflected light |
| US6147734A (en) * | 1998-12-17 | 2000-11-14 | Dai Nippon Printing Co., Ltd. | Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device |
| US6583833B1 (en) | 1998-12-17 | 2003-06-24 | Dai Nippon Printing Co., Ltd. | Bidirectional dichroic circular polarizer and reflection/transmission type liquid-crystal display device |
| KR100337886B1 (en) * | 1999-12-15 | 2002-05-23 | 김순택 | Liquid Cristal Display |
| US6628369B2 (en) | 2000-03-10 | 2003-09-30 | Nippon Oil Corporation | Circular polarizer and liquid crystal display |
| WO2001090788A1 (en) * | 2000-05-23 | 2001-11-29 | Nippon Oil Corporation | Circular polarization plate and liquid crystal display |
| WO2002006863A1 (en) * | 2000-07-14 | 2002-01-24 | Nippon Oil Corporation | Circular polarization plate and liquid crystal display device |
| CN100385270C (en) * | 2000-07-14 | 2008-04-30 | 新日本石油株式会社 | Circular polarization plate and liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3022465B2 (en) | 2000-03-21 |
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