JP2002182210A - Reflection type-cum-transmission type liquid crystal display device - Google Patents
Reflection type-cum-transmission type liquid crystal display deviceInfo
- Publication number
- JP2002182210A JP2002182210A JP2000385110A JP2000385110A JP2002182210A JP 2002182210 A JP2002182210 A JP 2002182210A JP 2000385110 A JP2000385110 A JP 2000385110A JP 2000385110 A JP2000385110 A JP 2000385110A JP 2002182210 A JP2002182210 A JP 2002182210A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- hologram
- light
- crystal display
- guide plate
- 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.)
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Links
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- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、反射型兼透過型液
晶表示装置に関し、周囲が明るい場所でも暗い場所でも
明るい表示が可能な反射型兼透過型液晶表示装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective and transmissive liquid crystal display device, and more particularly to a reflective and transmissive liquid crystal display device capable of bright display even in a bright or dark place.
【０００２】[0002]
【従来の技術】液晶表示装置のフロントライト及びバッ
クライト用に導光板が用いられる。バックライト用導光
板は、散乱板等により均一性を上げることができるが、
フロントライト用導光板の場合、その導光板を通して表
示面を観察するため、透明である必要がある。2. Description of the Related Art A light guide plate is used for a front light and a backlight of a liquid crystal display device. The light guide plate for backlight can improve the uniformity by a scattering plate or the like,
In the case of a light guide plate for a front light, the light guide plate needs to be transparent because the display surface is observed through the light guide plate.
【０００３】本出願人は、特開平１１−１０９３３８号
において、反射型液晶表示装置のフロントライト用導光
板として、全反射を繰り返しながら光を伝搬する導光板
の一面に反射型又は透過型のホログラムを設けて伝搬光
を外部に照明光として出すホログラム付き導光板を提案
している。In Japanese Patent Application Laid-Open No. H11-109338, the present applicant discloses a reflection or transmission hologram on one surface of a light guide plate that transmits light while repeating total reflection as a front light guide plate for a reflection type liquid crystal display device. And a light guide plate with a hologram that outputs propagation light as illumination light to the outside is proposed.
【０００４】このような導光板を透過型液晶表示装置の
バックライト用導光板として用いることも、特願２００
０−３１９２６０において提案している。[0004] The use of such a light guide plate as a light guide plate for a backlight of a transmission type liquid crystal display device has been disclosed in Japanese Patent Application No. 200-131,199.
0-319260.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ような導光板をバックライト用導光板として用いて、周
囲が明るい場所では外光を利用する反射型液晶表示装置
として、周囲が暗い場所ではそのバックライト用導光板
による照明を用いた透過型液晶表示装置として機能する
ようにするものは従来知られていなかった。However, the light guide plate as described above is used as a backlight light guide plate, and is used as a reflection type liquid crystal display device using outside light in a bright place. A device that functions as a transmissive liquid crystal display device using illumination by a light guide plate for a backlight has not been conventionally known.
【０００６】本発明は従来技術のこのような問題に鑑み
てなされたものであり、その目的は、ホログラム付き導
光板をバックライト用導光板として使用することによ
り、周囲が明るい場所でも暗い場所でも明るい表示が可
能な反射型兼透過型液晶表示装置を提供することであ
る。The present invention has been made in view of such a problem of the prior art, and an object of the present invention is to use a light guide plate with a hologram as a light guide plate for a backlight, so that it can be used in a bright or dark place. An object of the present invention is to provide a reflective and transmissive liquid crystal display device capable of bright display.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成する本発
明の反射型兼透過型液晶表示装置は、画素毎に区切られ
た画素電極と共通電極の間に挟持され、画素毎に透過率
が制御可能な液晶層を備えた液晶表示素子を備えた液晶
表示装置において、前記液晶表示素子の背面側に、空隙
あるいは低屈折率層を介して、偏向素子付き導光板が配
置され、さらにその背面側に空隙あるいは低屈折率層を
介して、指向性反射層が配置されてなり、前記偏向素子
付き導光板は、透明板状体を備え、その一面に偏向素子
が設けられ、その板状体の一端の近傍に配置された光源
から導入された光がその板状体中を繰り返し全反射しな
がら伝搬され、その伝搬される光の一部が前記偏向素素
子により前記透明板状体の背面側へ偏向されるように構
成されていることを特徴とするものである。A reflective and transmissive liquid crystal display device according to the present invention, which achieves the above object, is sandwiched between a pixel electrode and a common electrode which are divided for each pixel, and the transmittance for each pixel is reduced. In a liquid crystal display device having a liquid crystal display element having a controllable liquid crystal layer, a light guide plate with a deflection element is disposed on the back side of the liquid crystal display element via a gap or a low refractive index layer, A directional reflection layer is disposed on the side with a gap or a low refractive index layer interposed therebetween, and the light guide plate with a deflecting element includes a transparent plate, and a deflecting element is provided on one surface thereof, and the plate is The light introduced from a light source disposed near one end of the plate is propagated while being repeatedly totally reflected in the plate, and a part of the propagated light is reflected by the deflector element on the back surface of the transparent plate. Be configured to be deflected to the side It is an feature.
【０００８】この場合、偏向素子付き導光板がホログラ
ム付き導光板からなり、そのホログラム付き導光板は、
透明板状体を備え、その一面にホログラムが設けられ、
その板状体の一端の近傍に配置された光源から導入され
た光がその板状体中を繰り返し全反射しながら伝搬さ
れ、その伝搬される光の一部がホログラムにより透明板
状体の背面側へ回折されるように構成されているものと
するのが望ましい。In this case, the light guide plate with the deflecting element comprises a light guide plate with a hologram.
A transparent plate-like body is provided, and a hologram is provided on one surface thereof,
Light introduced from a light source disposed near one end of the plate is propagated while being repeatedly totally reflected in the plate, and a part of the propagated light is holographically reflected on the back of the transparent plate. Desirably, it is configured to be diffracted to the side.
【０００９】この場合、そのホログラムが透過型ホログ
ラムでも反射型ホログラムでもよい。In this case, the hologram may be a transmission hologram or a reflection hologram.
【００１０】本発明においては、液晶表示素子の背面側
に、空隙あるいは低屈折率層を介して、偏向素子付き導
光板が配置され、さらにその背面側に空隙あるいは低屈
折率層を介して、指向性反射層が配置されてなり、その
偏向素子付き導光板は、透明板状体を備え、その一面に
偏向素子が設けられ、その板状体の一端の近傍に配置さ
れた光源から導入された光がその板状体中を繰り返し全
反射しながら伝搬され、その伝搬される光の一部が偏向
素素子により透明板状体の背面側へ偏向されるように構
成されているので、簡単な構成で、周囲が明るい場所で
は、光源を用いずに外光を利用した明るい反射型液晶表
示装置として動作させることができ、また、周囲が暗い
場所では、光源を点灯して明るい透過型液晶表示装置と
して動作させることができる。In the present invention, a light guide plate with a deflecting element is disposed on the back side of the liquid crystal display element via a gap or a low refractive index layer, and further on the back side of the light guide plate via a gap or a low refractive index layer. A directional reflection layer is arranged, the light guide plate with a deflecting element is provided with a transparent plate, a deflecting element is provided on one surface thereof, and is introduced from a light source arranged near one end of the plate. Light is propagated while being repeatedly reflected in the plate, and a part of the propagated light is deflected to the back side of the transparent plate by the deflector element. In a bright place, it can be operated as a bright reflective liquid crystal display device using external light without using a light source, and in a dark place, the light source is turned on and a bright transmissive liquid crystal display is used. Can operate as a display device Can.
【００１１】[0011]
【発明の実施の形態】以下、本発明に基づく反射型兼透
過型液晶表示装置を実施例に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a reflective / transmissive liquid crystal display device according to the present invention will be described with reference to embodiments.
【００１２】図１は、その１実施例の反射型兼透過型液
晶表示装置の構成を示す断面図であり、図２にその反射
型兼透過型液晶表示装置の概念図を示す。この反射型兼
透過型液晶表示装置の液晶表示素子１０としては、例え
ば、観察側の透明ガラス基板１２と反対側の透明ガラス
基板１３との間に、ツイストネマチック等の液晶層１１
が挟持されており、観察側の透明ガラス基板１２の内表
面には、図示しないブラック・マトリックスとＩＴＯ等
からなる一様な透明対向電極１４が設けられ、観察側と
反対側の透明ガラス基板１３の内表面には、ＲＧＢ３色
からなるカラーフィルター１６とその画素毎に独立に設
けられＴＦＴを備えた透明画素電極１５が設けられてい
る。また、電極１４、１５の液晶層１側には不図示の配
向層も設けて構成されている。そして、透明ガラス基板
１２、１３の外表面にはそれぞれ偏光板１７、１８が貼
り付けられており、例えばそれらの透過軸は相互に直交
するように配置されている。FIG. 1 is a sectional view showing the structure of a reflective / transmissive liquid crystal display device according to an embodiment of the present invention. FIG. 2 is a conceptual diagram of the reflective / transmissive liquid crystal display device. As the liquid crystal display element 10 of this reflection / transmission type liquid crystal display device, for example, a liquid crystal layer 11 such as a twisted nematic is provided between a transparent glass substrate 12 on the observation side and a transparent glass substrate 13 on the opposite side.
On the inner surface of the transparent glass substrate 12 on the observation side, a uniform transparent counter electrode 14 made of a black matrix and ITO or the like (not shown) is provided, and the transparent glass substrate 13 on the opposite side to the observation side is provided. Are provided with a color filter 16 of three colors of RGB and a transparent pixel electrode 15 provided independently for each pixel and provided with a TFT. Further, an alignment layer (not shown) is provided on the liquid crystal layer 1 side of the electrodes 14 and 15. Polarizing plates 17 and 18 are attached to the outer surfaces of the transparent glass substrates 12 and 13, respectively, and, for example, their transmission axes are arranged to be orthogonal to each other.
【００１３】そして、本発明に基づいて、液晶表示素子
１０の背面側には、極く薄い空隙あるいは低屈折率層を
介して、ホログラム付き導光板１が配置されている。こ
のホログラム付き導光板１は、プラスチック等の透明板
状体２を備えており、その背面側には、透過型ホログラ
ム３が密着あるいは接着配置されている。この透過型ホ
ログラム３は、特開平１１−１０９３３８号の透過型ホ
ログラムと同様に、透明板状体２内で導光され透過型ホ
ログラム３に臨界角以上の所定の角度で入射する光を透
明板状体２の背面の外へ透過型ホログラム３の法線に対
して角度θをなす斜めの射出角で回折光６として回折す
る特性を有するものである。そして、透過型ホログラム
３の回折効率は、平均して光源４に近い程低く、光源４
から離れるに従って高く設定されている。詳細は、特開
平１１−１０９３３８号参照。何れにしても、透過型ホ
ログラム３の回折効率は１００％より小さくなってい
る。According to the present invention, the light guide plate with hologram 1 is disposed on the back side of the liquid crystal display element 10 via an extremely thin gap or a low refractive index layer. The light guide plate with hologram 1 is provided with a transparent plate 2 made of plastic or the like, and a transmission hologram 3 is adhered or adhered to the back side thereof. The transmission hologram 3 is, similarly to the transmission hologram of Japanese Patent Application Laid-Open No. H11-109338, formed by transmitting light guided inside the transparent plate 2 and entering the transmission hologram 3 at a predetermined angle equal to or greater than the critical angle. It has a characteristic of diffracting as diffracted light 6 at an oblique exit angle that forms an angle θ with respect to the normal of the transmission hologram 3 to the outside of the back surface of the shape 2. On the other hand, the diffraction efficiency of the transmission hologram 3 becomes lower as the light source 4 is closer to the light source 4 on average.
It is set higher as you move away from it. For details, see JP-A-11-109338. In any case, the diffraction efficiency of the transmission hologram 3 is smaller than 100%.
【００１４】ホログラム付き導光板１の背面側には、極
く薄い空隙あるいは低屈折率層を介して、指向性反射層
１９が配置されている。このような指向性反射層１９の
１つとしては、斜め入射の回折光６を略正面方向に拡散
性の反射光６’として反射回折する反射型ホログラムが
ある。このような反射型のホログラムは例えば特開平１
１−１２５７０７号、特開平１１−３５２３２９号等に
おいて知られているものである。また、その代わりに、
同様の特性を持つ反射型の計算機ホログラム（特開平１
１−１８３７１６号、特開平１１−２９６０５４号、特
願２０００−１５９９１４）、あるいは、白色拡散板
（特願２０００−３０９３３４）を用いてもよい。さら
に、その代わりに、図３に断面を示すような断面鋸歯状
の反射鏡１９’を用いても同様の作用を達成することが
できる。On the back side of the light guide plate 1 with hologram, a directional reflection layer 19 is arranged via an extremely thin gap or a low refractive index layer. As one of such directional reflection layers 19, there is a reflection hologram that reflects and diffracts the obliquely incident diffracted light 6 as diffusive reflected light 6 'in a substantially frontal direction. Such a reflection type hologram is disclosed in, for example,
These are known from JP-A 1-125707, JP-A-11-352329 and the like. Also, instead,
Reflection type computer hologram having similar characteristics
1-1183716, JP-A-11-296054, Japanese Patent Application No. 2000-159914), or a white diffuser plate (Japanese Patent Application No. 2000-309334) may be used. Further, instead, a similar effect can be achieved by using a reflecting mirror 19 'having a sawtooth cross section as shown in the cross section in FIG.
【００１５】このような構成であるので、透明板状体２
の一端に面して配置された光源４を点灯すると、透明板
状体２内に照明光５が導入され、透明板状体２の表面と
その背面に密着あるいは接着配置されている透過型ホロ
グラム３の空気又は低屈折率層との界面との間で全反射
を繰り返しながら透明板状体２の他端へ向かって導光さ
れる。透過型ホログラム３は上記のような構成であるの
で、その導光の間、照明光５中の透過型ホログラム３の
回折条件を満たす角度成分が透過型ホログラム３により
回折され、斜めの回折光６として背面側へ回折される。
その回折光６は、透過型ホログラム３に近接配置された
指向性反射層１９で略正面方向に向かう反射光６’とし
て反射回折され、その反射光６’は今度は透過型ホログ
ラム３で回折されずにホログラム付き導光板１を透過
し、液晶表示素子１０を背面側から一様に照明する。そ
の光は液晶表示素子１０の各画素によって空間変調を受
けて表示光６”となって観察者の眼Ｅに達し、各画素の
変調状態の組み合わせによって明るい表示が可能にな
る。With such a configuration, the transparent plate 2
When the light source 4 disposed on one end of the transparent plate 2 is turned on, the illumination light 5 is introduced into the transparent plate 2 and the transmission type hologram closely or adhered to the surface of the transparent plate 2 and its back surface. The light is guided toward the other end of the transparent plate 2 while repeating total reflection between the air 3 and the interface with the low refractive index layer. Since the transmission hologram 3 is configured as described above, an angle component satisfying the diffraction condition of the transmission hologram 3 in the illumination light 5 is diffracted by the transmission hologram 3 during the light guide, and the oblique diffracted light 6 Is diffracted to the back side.
The diffracted light 6 is reflected and diffracted by the directional reflection layer 19 disposed close to the transmission hologram 3 as reflected light 6 ′ heading substantially in the front direction, and the reflected light 6 ′ is diffracted by the transmission hologram 3 this time. Instead, the light passes through the light guide plate with hologram 1 and uniformly illuminates the liquid crystal display element 10 from the back side. The light is spatially modulated by each pixel of the liquid crystal display element 10 to become display light 6 ″ and reaches the observer's eye E, and a bright display can be achieved by a combination of the modulation state of each pixel.
【００１６】これに対して、明るい環境下で回折光６と
同じ方向に入射する外光７が存在する場合、外光７は液
晶表示素子１０の各画素によって空間変調を受けてホロ
グラム付き導光板１側へ透過し、その透明板状体２内に
入射して一部は透過型ホログラム３で回折されないでホ
ログラム付き導光板１を透過し、その透過光は指向性反
射層１９で略正面方向に向かう反射光７’として反射回
折され、その反射光７’は透過型ホログラム３で回折さ
れずにホログラム付き導光板１を透過し、液晶表示素子
１０を背面側から一様に照明し、その光は再度液晶表示
素子１０の各画素によって空間変調を受けて表示光７”
となって観察者の眼Ｅに達し、各画素の変調状態の組み
合わせによって明るい表示が可能になる。On the other hand, when there is external light 7 incident in the same direction as the diffracted light 6 in a bright environment, the external light 7 is spatially modulated by each pixel of the liquid crystal display element 10 and is provided with a light guide plate with a hologram. 1 and enters the transparent plate 2, and a part of the light passes through the light guide plate 1 with hologram without being diffracted by the transmission type hologram 3. The reflected light 7 ′ is reflected and diffracted as reflected light 7 ′, and the reflected light 7 ′ is transmitted through the light guide plate 1 with hologram without being diffracted by the transmission type hologram 3, illuminating the liquid crystal display element 10 uniformly from the back side. The light is again spatially modulated by each pixel of the liquid crystal display element 10 and the display light 7 ″
As a result, the image reaches the eye E of the observer, and a bright display is enabled by a combination of the modulation states of the pixels.
【００１７】以上のように、本発明の反射型兼透過型液
晶表示装置においては、ホログラム付き導光板を加える
だけの簡単な構成で、周囲が明るい場所では、光源を用
いずに外光を利用した明るい反射型液晶表示装置として
動作させることができ、また、周囲が暗い場所では、光
源を点灯して明るい透過型液晶表示装置として動作させ
ることができる。As described above, the reflection-type and transmission-type liquid crystal display device of the present invention has a simple structure in which a light guide plate with a hologram is simply added. In a bright place, external light is used without using a light source. It can be operated as a bright reflective liquid crystal display device, and in a dark place, the light source can be turned on to operate as a bright transmissive liquid crystal display device.
【００１８】以上、本発明の反射型兼透過型液晶表示装
置を実施例に基づいて説明してきたが、本発明はこれら
実施例に限定されず種々の変形が可能である。また、ホ
ログラム付き導光板１として、透明板状体２の背面に透
過型ホログラム３を密着あるいは接着配置する代わり
に、その前面に反射型ホログラムを密着あるいは接着配
置し、透明板状体２内で全反射を繰り返しながら導光さ
れる光５をその間反射型ホログラムにより回折して透明
板状体２の背面側に出して照明光とするようにしてもよ
い。詳細は、特開平１１−１０９３３８号参照。さらに
は、透過型ホログラム３の代わりに、レリーフ型あるい
は体積型の回折格子を用いてもよく、さらには、マイク
ロプリズムのアレーからなるものを用いてもよい。Although the reflection type and transmission type liquid crystal display device of the present invention has been described based on the embodiments, the present invention is not limited to these embodiments, and various modifications are possible. Also, as the light guide plate with hologram 1, instead of the transmission type hologram 3 being adhered or adhered to the back of the transparent plate 2, a reflection hologram is adhered or adhered to the front of the transparent hologram 3. The light 5 guided while repeating total reflection may be diffracted by a reflection hologram during that time and output to the back side of the transparent plate-like body 2 to be used as illumination light. For details, see JP-A-11-109338. Furthermore, instead of the transmission type hologram 3, a relief type or volume type diffraction grating may be used, and further, a type formed by an array of microprisms may be used.
【００１９】[0019]
【発明の効果】以上の説明から明らかなように、本発明
の反射型兼透過型液晶表示装置によると、液晶表示素子
の背面側に、空隙あるいは低屈折率層を介して、偏向素
子付き導光板が配置され、さらにその背面側に空隙ある
いは低屈折率層を介して、指向性反射層が配置されてな
り、その偏向素子付き導光板は、透明板状体を備え、そ
の一面に偏向素子が設けられ、その板状体の一端の近傍
に配置された光源から導入された光がその板状体中を繰
り返し全反射しながら伝搬され、その伝搬される光の一
部が偏向素素子により透明板状体の背面側へ偏向される
ように構成されているので、簡単な構成で、周囲が明る
い場所では、光源を用いずに外光を利用した明るい反射
型液晶表示装置として動作させることができ、また、周
囲が暗い場所では、光源を点灯して明るい透過型液晶表
示装置として動作させることができる。As is apparent from the above description, according to the reflective / transmissive liquid crystal display device of the present invention, the back surface of the liquid crystal display element is provided with a deflecting element with a gap or a low refractive index layer. A light plate is arranged, and further a directional reflection layer is arranged on the back side through a gap or a low refractive index layer, and the light guide plate with a deflecting element includes a transparent plate-like body, and a deflecting element is provided on one surface thereof. Is provided, and light introduced from a light source disposed near one end of the plate is propagated while being repeatedly totally reflected in the plate, and a part of the propagated light is deflected by the deflector element. Since it is configured to be deflected to the back side of the transparent plate-shaped body, it can be operated as a bright reflective liquid crystal display device using external light without using a light source in a bright place with a simple configuration. In a dark place The light source is lit can be operated as a light transmissive type liquid crystal display device.
【図１】本発明に基づく１実施例の反射型兼透過型液晶
表示装置の構成を示す断面図である。FIG. 1 is a cross-sectional view showing a configuration of a reflective and transmissive liquid crystal display device according to an embodiment of the present invention.
【図２】図１の反射型兼透過型液晶表示装置の概念図で
ある。FIG. 2 is a conceptual diagram of the reflective / transmissive liquid crystal display device of FIG.
【図３】指向性反射層として使用可能な断面鋸歯状の反
射鏡の構成を示す断面図である。FIG. 3 is a cross-sectional view illustrating a configuration of a reflecting mirror having a sawtooth cross section that can be used as a directional reflection layer.
１…ホログラム付き導光板 ２…透明板状体 ３…透過型ホログラム ４…光源 ５…照明光 ６…回折光 ６’…反射光 ６”…表示光 ７…外光 ７’…反射光 ７”…表示光 １０…液晶表示素子 １１…液晶層 １２、１３…透明ガラス基板 １４…透明対向電極 １５…透明画素電極 １６…カラーフィルター １７、１８…偏光板 １９…指向性反射層 DESCRIPTION OF SYMBOLS 1 ... Light guide plate with hologram 2 ... Transparent plate-shaped body 3 ... Transmissive hologram 4 ... Light source 5 ... Illumination light 6 ... Diffraction light 6 '... Reflection light 6 "... Display light 7 ... External light 7' ... Reflection light 7" ... Display light 10 ... Liquid crystal display element 11 ... Liquid crystal layer 12, 13 ... Transparent glass substrate 14 ... Transparent counter electrode 15 ... Transparent pixel electrode 16 ... Color filter 17, 18 ... Polarizing plate 19 ... Directional reflection layer
Claims (4)
の間に挟持され、画素毎に透過率が制御可能な液晶層を
備えた液晶表示素子を備えた液晶表示装置において、 前記液晶表示素子の背面側に、空隙あるいは低屈折率層
を介して、偏向素子付き導光板が配置され、さらにその
背面側に空隙あるいは低屈折率層を介して、指向性反射
層が配置されてなり、 前記偏向素子付き導光板は、透明板状体を備え、その一
面に偏向素子が設けられ、その板状体の一端の近傍に配
置された光源から導入された光がその板状体中を繰り返
し全反射しながら伝搬され、その伝搬される光の一部が
前記偏向素素子により前記透明板状体の背面側へ偏向さ
れるように構成されていることを特徴とする反射型兼透
過型液晶表示装置。1. A liquid crystal display device comprising a liquid crystal display element having a liquid crystal layer sandwiched between a pixel electrode divided for each pixel and a common electrode and having a transmittance controllable for each pixel, On the back side of the element, via a gap or low refractive index layer, a light guide plate with a deflecting element is arranged, and further on the back side via a gap or low refractive index layer, a directional reflection layer is arranged, The light guide plate with a deflecting element includes a transparent plate, a deflecting element is provided on one surface thereof, and light introduced from a light source arranged near one end of the plate is repeated in the plate. A reflective and transmissive liquid crystal, wherein the reflective and transmissive liquid crystal is configured to be propagated while being totally reflected, and a part of the propagated light is deflected to the back side of the transparent plate by the deflector element. Display device.
き導光板からなり、そのホログラム付き導光板は、透明
板状体を備え、その一面にホログラムが設けられ、その
板状体の一端の近傍に配置された光源から導入された光
がその板状体中を繰り返し全反射しながら伝搬され、そ
の伝搬される光の一部が前記ホログラムにより前記透明
板状体の背面側へ回折されるように構成されていること
を特徴とする請求項１記載の反射型兼透過型液晶表示装
置。2. The light guide plate with a deflecting element comprises a light guide plate with a hologram, the light guide plate with a hologram has a transparent plate-like body, a hologram is provided on one surface thereof, and is provided near one end of the plate-like body. The light introduced from the arranged light source is propagated while being repeatedly and totally reflected in the plate-like body, and a part of the propagated light is diffracted by the hologram to the back side of the transparent plate-like body. The reflective and transmissive liquid crystal display device according to claim 1, wherein the liquid crystal display device is configured.
なることを特徴とする請求項２記載の反射型兼透過型液
晶表示装置。3. The reflection type and transmission type liquid crystal display device according to claim 2, wherein said hologram is a transmission type hologram.
なることを特徴とする請求項２記載の反射型兼透過型液
晶表示装置。4. The reflection / transmission type liquid crystal display device according to claim 2, wherein said hologram is a reflection type hologram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000385110A JP4289583B2 (en) | 2000-12-19 | 2000-12-19 | Reflective and transmissive liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000385110A JP4289583B2 (en) | 2000-12-19 | 2000-12-19 | Reflective and transmissive liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002182210A true JP2002182210A (en) | 2002-06-26 |
| JP4289583B2 JP4289583B2 (en) | 2009-07-01 |
Family
ID=18852435
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000385110A Expired - Fee Related JP4289583B2 (en) | 2000-12-19 | 2000-12-19 | Reflective and transmissive liquid crystal display |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006079852A (en) * | 2004-09-07 | 2006-03-23 | Toppan Printing Co Ltd | Light guide plate and display device |
| JP2006086026A (en) * | 2004-09-16 | 2006-03-30 | Toppan Printing Co Ltd | Light guide plate and display device |
| KR100818280B1 (en) * | 2006-10-25 | 2008-04-01 | 삼성전자주식회사 | Surface illuminating device and display device employing the same |
| US7762706B2 (en) | 2004-02-16 | 2010-07-27 | Citizen Electronics Co., Ltd. | Planar light source |
-
2000
- 2000-12-19 JP JP2000385110A patent/JP4289583B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7762706B2 (en) | 2004-02-16 | 2010-07-27 | Citizen Electronics Co., Ltd. | Planar light source |
| KR101099831B1 (en) * | 2004-02-16 | 2011-12-28 | 시티즌 덴시 가부시키가이샤 | Planar light source |
| JP2006079852A (en) * | 2004-09-07 | 2006-03-23 | Toppan Printing Co Ltd | Light guide plate and display device |
| JP2006086026A (en) * | 2004-09-16 | 2006-03-30 | Toppan Printing Co Ltd | Light guide plate and display device |
| JP4517794B2 (en) * | 2004-09-16 | 2010-08-04 | 凸版印刷株式会社 | Light guide plate and display device |
| KR100818280B1 (en) * | 2006-10-25 | 2008-04-01 | 삼성전자주식회사 | Surface illuminating device and display device employing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4289583B2 (en) | 2009-07-01 |
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