JPH0950031A - Liquid crystal display device - Google Patents
Liquid crystal display deviceInfo
- Publication number
- JPH0950031A JPH0950031A JP7204542A JP20454295A JPH0950031A JP H0950031 A JPH0950031 A JP H0950031A JP 7204542 A JP7204542 A JP 7204542A JP 20454295 A JP20454295 A JP 20454295A JP H0950031 A JPH0950031 A JP H0950031A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- crystal display
- display device
- crystal panel
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0261—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level
- H04W52/0267—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components
- H04W52/027—Power saving arrangements in terminal devices managing power supply demand, e.g. depending on battery level by controlling user interface components by controlling a display operation or backlight unit
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Liquid Crystal (AREA)
- Human Computer Interaction (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、通常使用上は反射型の
液晶表示装置に関し、必要に応じバックライトを点灯さ
せることができる液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective liquid crystal display device for normal use, and more particularly to a liquid crystal display device in which a backlight can be turned on if necessary.
【０００２】[0002]
【従来の技術】液晶を２枚の透明電極を形成した透明基
板で挾持し、透明基板の外側に偏光板を貼り付けて作製
した液晶パネルの背後に、半透過反射基板を配置し、更
にバックライト照明を配置した液晶表示装置は既に市販
されている。バックライト照明を常時用いないため省電
力化が可能で、携帯電話や腕時計等の中小パネルに広く
普及している。また、ポータブルのパーソナルコンピュ
ータ用途にも検討されるようになった。2. Description of the Related Art A liquid crystal panel is made by sandwiching a liquid crystal with a transparent substrate having two transparent electrodes, and a polarizing plate is attached to the outside of the transparent substrate. A liquid crystal display device provided with a light illumination is already on the market. Since it does not use backlight illumination all the time, it can save power and is widely used in small and medium-sized panels such as mobile phones and wrist watches. Also, it has come to be considered for use in portable personal computers.
【０００３】半透過反射基板は、表面に凹凸を有する透
明基板上に反射率が適切になる膜厚でアルミニウム層を
形成したものが用いられている。バックライト照明に
は、高誘電率バインダー中に分散した蛍光体に交流を印
可する事により発光する、シート状のＥＬ面状発光体が
用いられている。発光色はブルーグリーンが主流であ
る。As the semi-transmissive reflective substrate, a transparent substrate having irregularities on its surface, on which an aluminum layer is formed to have a film thickness that provides an appropriate reflectance, is used. For backlight illumination, a sheet-like EL planar light-emitting body that emits light by applying an alternating current to a phosphor dispersed in a high dielectric constant binder is used. The main emission color is blue-green.
【０００４】[0004]
【発明が解決しようとする課題】しかし、半透過反射基
板を用いた反射型の液晶表示装置は、全反射基板を用い
た反射型の液晶表示装置に比べ、半分の明るさしか得ら
れない。またバックライトの照明も、半透過反射基板を
介することで半分の光しか利用できない。結果的に、反
射表示も透過型表示も暗く見づらい表示になってしまう
という問題があった。また、バインダー中に蛍光体を分
散させたシート状のＥＬ面状発光体は、数百ヘルツの周
波数で、５０ボルトから２００ボルト程度の電圧を印可
せねばならず、電池を電源とする場合、インバータ回路
が必要となった。インバータにはコイル等の重く嵩ばる
部品が必要となるため、小型携帯機器には適していな
い。また発光色も白色の発光は色純度が悪く、効率も悪
いものしか得られていない。However, the reflection type liquid crystal display device using the semi-transmissive reflection substrate can obtain only half the brightness as compared with the reflection type liquid crystal display device using the total reflection substrate. Also, as for the illumination of the backlight, only half the light can be used through the transflective substrate. As a result, there is a problem that both the reflective display and the transmissive display are dark and difficult to see. In addition, the sheet-like EL planar light-emitting body in which the phosphor is dispersed in the binder must apply a voltage of about 50 V to 200 V at a frequency of several hundred hertz, and when using a battery as a power source, An inverter circuit is needed. Since the inverter requires heavy and bulky parts such as a coil, it is not suitable for small portable devices. In addition, the emission color of white light is poor in color purity and only inefficient.
【０００５】そこで本発明はこのような課題を解決する
もので、その目的とするところは、通常は明るい反射型
の液晶表示装置であり、必要に応じてバックライト照明
が可能で、しかもインバータ回路が不要であり、また自
由な発光色選択のできる液晶表示装置を提供するところ
にある。Therefore, the present invention solves such a problem, and an object of the present invention is to provide a normally bright reflective liquid crystal display device, which can be backlit when necessary, and has an inverter circuit. It is an object of the present invention to provide a liquid crystal display device that does not require the liquid crystal display and can freely select the emission color.
【０００６】[0006]
【課題を解決するための手段】上記目的は、液晶を２枚
の透明電極が形成された透明基板で挾持した液晶パネル
の背後に、光散乱機能を有する拡散板が配置され、拡散
板の背後に透明基板に透明電極と有機発光層及び金属電
極が積層された有機ＥＬ面状発光体を配置することによ
り達成される。Means for Solving the Problems The above-mentioned object is to dispose a diffusion plate having a light scattering function behind a liquid crystal panel in which a liquid crystal is held by a transparent substrate on which two transparent electrodes are formed. It is achieved by arranging an organic EL planar light-emitting body in which a transparent electrode, an organic light-emitting layer and a metal electrode are laminated on a transparent substrate.
【０００７】また、液晶を２枚の透明電極が形成された
透明基板で挾持した液晶パネルの背後に、表面または裏
面に凹凸を有する透明基板上に透明電極と有機発光層及
び金属電極が積層された有機ＥＬ面状発光体を配置する
ことにより達成される。In addition, a transparent electrode, an organic light emitting layer, and a metal electrode are laminated on a transparent substrate having an uneven surface or a back surface behind a liquid crystal panel in which liquid crystal is held between two transparent electrodes. It is achieved by arranging the organic EL planar light-emitting body.
【０００８】[0008]
【作用】有機発光物質を用いた有機ＥＬ素子としては、
単層または、正孔注入層や電子注入層を有する多層構造
の素子が知られている（特公昭６４−７６３５、特開昭
６３−２９５６９５など）。発光層、正孔注入層、電子
注入層の各有機層は、真空蒸着やスピンコーティングに
より１０００オングストローム程度の厚さの均一な薄膜
で形成されている。電極は透明基板側にＩＴＯや酸化ス
ズ等の透明電極を用い、有機層上にはインジウムやマグ
ネシウム−銀合金、アルミニウム−リチウム合金等の金
属電極を真空蒸着により形成している。透明基板側から
見ると有機層が薄いため、鏡状に全反射の金属光沢が観
察される。直流１０ボルト程度の駆動電圧で、１０００
cd／m2以上の発光輝度が得られている。また、有機発光
材料を選択または複合化させることで、自由に発光色を
変えることができる。[Function] As an organic EL element using an organic light emitting material,
A device having a single layer or a multi-layer structure having a hole injection layer or an electron injection layer is known (Japanese Patent Publication No. 64-7635, Japanese Patent Publication No. 63-295695, etc.). Each of the light emitting layer, the hole injecting layer, and the electron injecting layer is formed as a uniform thin film having a thickness of about 1000 Å by vacuum deposition or spin coating. As the electrode, a transparent electrode such as ITO or tin oxide is used on the transparent substrate side, and a metal electrode such as indium, magnesium-silver alloy or aluminum-lithium alloy is formed on the organic layer by vacuum deposition. When viewed from the transparent substrate side, since the organic layer is thin, a mirror-like total reflection metallic luster is observed. With a driving voltage of about 10 VDC, 1000
Emission brightness of cd / m 2 or more is obtained. In addition, the emission color can be freely changed by selecting or combining the organic light emitting materials.
【０００９】バインダー中に蛍光体を分散させたシート
状のＥＬ面状発光体は、強い反射光が得られないため、
面状発光体の前面に反射板が必要となる。しかし、有機
ＥＬ面状発光体であれば、非通電時において反射板とし
て機能させることができる。しかし、平滑な表面の反射
板では反射光の指向性が高く、液晶表示としては見づら
くなってしまうため、光拡散板が必要となる。光拡散板
としては表面に凹凸をつけた透明なものが一般的であ
る。光は透過する際、屈折率差の大きい界面で反射し損
失となる。特に空気との界面で著しいため、透明基板と
屈折率の近い接着層を介して貼り合わせることが大切で
ある。平滑な面同士の接着が好ましい。Since a sheet-like EL planar light-emitting body in which a phosphor is dispersed in a binder cannot obtain strong reflected light,
A reflector is required on the front surface of the planar light emitter. However, if it is an organic EL planar light-emitting body, it can function as a reflection plate when it is not energized. However, since a reflective plate having a smooth surface has high directivity of reflected light and is difficult to see as a liquid crystal display, a light diffusing plate is required. As a light diffusing plate, a transparent one having a roughened surface is generally used. When light is transmitted, it is reflected by an interface having a large difference in refractive index and becomes a loss. In particular, since it is remarkable at the interface with air, it is important to bond it to a transparent substrate via an adhesive layer having a refractive index close to that of the transparent substrate. Adhesion between smooth surfaces is preferred.
【００１０】最も光の利用効率が上がるのが、凹凸のあ
る表面に金属層、できればアルミニウム層を形成する方
法である。有機発光層は非常に薄いものの、面状発光体
のため全面電極でよく、この構成も可能である。The most efficient use of light is the method of forming a metal layer, preferably an aluminum layer, on the uneven surface. Although the organic light emitting layer is very thin, since it is a planar light emitting body, it may be an entire surface electrode, and this configuration is also possible.
【００１１】[0011]
（実施例１）本実施例における液晶表示装置の、模式的
な断面図を図１に示す。図１において、１は液晶パネ
ル、２が拡散板、３が有機ＥＬ面状発光体である。液晶
パネルは、ＴＮモードの固定表示であり、透明基板の外
側に偏光板が貼り付けてある。また拡散板は、透明なプ
ラスチックフィルムの片面に適度な粗さの凹凸をつけて
ある。有機ＥＬ面状発光体はガラス基板３１上にＩＴＯ
透明電極３２をスパッタ法で形成し、トリフェニルアミ
ン誘導体とベリリウムベンゾキノリノール錯体の２層か
らなる有機発光層３３を真空蒸着法で積層し、更にマグ
ネシウム−インジウム合金の金属電極３４を２元蒸着で
積層した。金属電極は液晶パネルの全反射層を兼ねてい
る。(Embodiment 1) FIG. 1 is a schematic sectional view of a liquid crystal display device according to this embodiment. In FIG. 1, 1 is a liquid crystal panel, 2 is a diffusion plate, and 3 is an organic EL planar light-emitting body. The liquid crystal panel is a fixed display in the TN mode, and a polarizing plate is attached to the outside of the transparent substrate. Further, the diffusion plate is provided with unevenness of appropriate roughness on one surface of a transparent plastic film. The organic EL planar light emitter is ITO on the glass substrate 31.
The transparent electrode 32 is formed by a sputtering method, an organic light emitting layer 33 composed of two layers of a triphenylamine derivative and a beryllium benzoquinolinol complex is laminated by a vacuum evaporation method, and a metal electrode 34 of magnesium-indium alloy is further formed by a two-source evaporation method. Laminated. The metal electrode also serves as the total reflection layer of the liquid crystal panel.
【００１２】液晶パネルにスタティック駆動により３ボ
ルトの電圧を印加すると、明るく広視野角で見やすい、
反射型の液晶表示が実現できた。液晶パネルの背後に、
通常の反射専用板を用いた反射型液晶表示装置と、表示
品位においてほとんど差異がなかった。また、有機ＥＬ
面状発光体に、透明電極を陽極とする３ボルトの電圧を
印加すると、液晶パネルの表面で５カンデラの輝度が得
られた。発光色は青緑色であった。When a voltage of 3 V is applied to the liquid crystal panel by static driving, it is bright and easy to see in a wide viewing angle.
A reflective liquid crystal display was realized. Behind the LCD panel,
There was almost no difference in display quality from the reflective liquid crystal display device using the ordinary reflection-dedicated plate. In addition, organic EL
When a voltage of 3 V with a transparent electrode serving as an anode was applied to the planar light-emitting body, a brightness of 5 candela was obtained on the surface of the liquid crystal panel. The emission color was blue-green.
【００１３】腕時計に前記液晶表示装置を登載すると、
３ボルトの電池を昇圧することなく時刻の表示ができ、
必要に応じて夜間照明をさせることができた。消費電力
はバインダー中に蛍光体を分散させたシート状のＥＬ面
状発光体に比べ、約半分で済んだ。When the liquid crystal display device is mounted on a wristwatch,
You can display the time without boosting the 3 volt battery,
It was possible to have night lighting if necessary. The power consumption was about half that of the sheet-like EL planar light-emitting body in which the phosphor was dispersed in the binder.
【００１４】（実施例２）本実施例における液晶表示装
置の、模式的な断面図を図２に示す。図２において、１
は液晶パネル、２が拡散板、３が有機ＥＬ面状発光体で
ある。液晶パネルは、ＴＮモードの固定表示であり、透
明基板の外側に偏光板が貼り付けてある。その裏面に接
着剤４を介してプラスチックフィルムの拡散板を貼り付
けてある。拡散板を貼り付けることで、透過光量を１０
％程度増やすことができた。拡散板の空気との界面は、
適度な粗さの凹凸をつけてある。有機ＥＬ面状発光体は
プラスチック基板上にＩＴＯ透明電極をスパッタ法で形
成し、オキサジアゾール誘導体とアルミニウムキノリノ
ール錯体の２層からなる有機発光層を真空蒸着法で積層
し、更にアルミニウム−リチウム合金の金属電極を２元
蒸着で積層した。(Embodiment 2) FIG. 2 is a schematic sectional view of a liquid crystal display device according to this embodiment. In FIG. 2, 1
Is a liquid crystal panel, 2 is a diffusion plate, and 3 is an organic EL planar light-emitting body. The liquid crystal panel is a fixed display in the TN mode, and a polarizing plate is attached to the outside of the transparent substrate. A diffuser plate made of a plastic film is attached to the back surface of the adhesive via an adhesive 4. By attaching a diffusion plate, the amount of transmitted light can be reduced to 10
I was able to increase about%. The interface of the diffuser plate with air is
It has unevenness with moderate roughness. The organic EL planar light-emitting body has an ITO transparent electrode formed on a plastic substrate by a sputtering method, an organic light-emitting layer consisting of two layers of an oxadiazole derivative and an aluminum quinolinol complex is laminated by a vacuum deposition method, and further an aluminum-lithium alloy. The metal electrodes of No. 2 were laminated by binary vapor deposition.
【００１５】液晶パネルにスタティック駆動により３ボ
ルトの電圧を印加すると、明るく広視野角で見やすい、
反射型の液晶表示が実現できた。液晶パネルの裏面に、
通常の反射専用板を貼りつけた反射型液晶表示装置と、
表示品位においてほとんど差異がなかった。また、有機
ＥＬ面状発光体に、透明電極を陽極とする３ボルトの電
圧を印加すると、液晶パネルの表面で１０カンデラの輝
度が得られた。発光色は緑色であった。When a voltage of 3 V is applied to the liquid crystal panel by static drive, it is bright and easy to see in a wide viewing angle.
A reflective liquid crystal display was realized. On the back of the LCD panel,
A reflective liquid crystal display device with a normal reflective plate attached,
There was almost no difference in display quality. When a voltage of 3 V with a transparent electrode serving as an anode was applied to the organic EL planar light-emitting body, a brightness of 10 candela was obtained on the surface of the liquid crystal panel. The emission color was green.
【００１６】腕時計に前記液晶表示装置を登載すると、
３ボルトの電池を昇圧することなく時刻の表示ができ、
必要に応じて夜間照明をさせることができた。透明な拡
散板の代わりに半透過の反射拡散板を用いると、ＥＬ点
灯時の液晶パネルの表面での輝度は５カンデラであり、
半分の明るさに減少した。When the liquid crystal display device is mounted on a wristwatch,
You can display the time without boosting the 3 volt battery,
It was possible to have night lighting if necessary. When a semi-transmissive reflective diffuser plate is used instead of the transparent diffuser plate, the brightness on the surface of the liquid crystal panel during EL lighting is 5 candela,
It decreased to half the brightness.
【００１７】（実施例３）本実施例における液晶表示装
置の、模式的な断面図を図３に示す。図３において、１
は液晶パネル、２が拡散板、３が有機ＥＬ面状発光体で
ある。液晶パネルは、櫛場電極を直交させたＴＮモード
のマトリクス表示であり、透明基板の外側に偏光板が貼
り付けてある。有機ＥＬ面状発光体はガラス基板上にＩ
ＴＯ透明電極をスパッタ法で形成し、ポリ（Ｎ−ビニル
カルバゾール）に1,1,4,4,-テトラフェニル-1,3-ブタジ
エンとクマリン６、ＤＣＭ１を適度な比率でドープした
有機発光層をスピンコート法で積層し、更にマグネシウ
ム−銀合金の金属電極を２元蒸着で積層した。有機ＥＬ
面状発光体のガラス基板の裏面に接着剤４を介してプラ
スチックフィルムの拡散板を貼り付けてある。拡散板を
貼り付けることで、透過光量を１０％程度増やすことが
できた。拡散板の空気との界面は、適度な粗さの凹凸を
つけてある。(Embodiment 3) FIG. 3 is a schematic sectional view of a liquid crystal display device according to this embodiment. In FIG. 3, 1
Is a liquid crystal panel, 2 is a diffusion plate, and 3 is an organic EL planar light-emitting body. The liquid crystal panel is a TN mode matrix display in which the comb electrodes are orthogonal to each other, and a polarizing plate is attached to the outside of the transparent substrate. The organic EL planar light-emitting body has a glass substrate
An organic light emitting layer formed by forming a TO transparent electrode by a sputtering method and doping poly (N-vinylcarbazole) with 1,1,4,4, -tetraphenyl-1,3-butadiene, coumarin 6 and DCM 1 at an appropriate ratio. Was laminated by spin coating, and a metal electrode of magnesium-silver alloy was further laminated by binary vapor deposition. Organic EL
A diffusion plate made of a plastic film is attached to the back surface of the glass substrate of the planar light-emitter through an adhesive 4. By attaching the diffusion plate, the amount of transmitted light could be increased by about 10%. The interface of the diffuser plate with the air is provided with irregularities of appropriate roughness.
【００１８】液晶パネルに１／１６デューティで線順次
走査駆動により電圧を印加すると、高コントラストの明
るい反射型の液晶表示が実現できた。液晶パネルの裏面
に、通常の反射専用板を貼りつけた反射型液晶表示装置
と、表示品位においてほとんど差異がなかった。また、
有機ＥＬ面状発光体に、透明電極を陽極とする６ボルト
の電圧を印加すると、液晶パネルの表面で７カンデラの
輝度が得られた。発光色は白色であった。When a voltage was applied to the liquid crystal panel by line-sequential scanning drive with a 1/16 duty, a bright reflective liquid crystal display with high contrast could be realized. There was almost no difference in display quality from the reflective liquid crystal display device in which a normal reflection-only plate was attached to the back surface of the liquid crystal panel. Also,
When a voltage of 6 V with a transparent electrode serving as an anode was applied to the organic EL planar light-emitting device, a brightness of 7 candela was obtained on the surface of the liquid crystal panel. The luminescent color was white.
【００１９】携帯電話等の小型情報機器に前記液晶表示
装置を登載すると、６ボルトの電池を昇圧することなく
情報の表示ができ、必要に応じて夜間照明をさせること
ができた。白色の発光色のため、違和感の無い見やすい
夜間表示を提供できた。When the liquid crystal display device was mounted on a small-sized information device such as a mobile phone, information could be displayed without boosting the voltage of a 6-volt battery, and night lighting could be performed if necessary. Due to the white luminescent color, it was possible to provide an easy-to-read nighttime display with no discomfort.
【００２０】（実施例４）本実施例における液晶表示装
置の、模式的な断面図を図４に示す。図４において、１
は液晶パネル、２が拡散板、３が有機ＥＬ面状発光体で
ある。液晶パネルは、櫛場電極を直交させたＳＴＮモー
ドのマトリクス表示であり、透明基板の外側に偏光板が
貼り付けてある。有機ＥＬ面状発光体はプラスチックフ
ィルム基板上にＩＴＯ透明電極をスパッタ法で形成し、
ポリ（Ｎ−ビニルカルバゾール）に1,1,4,4,-テトラフ
ェニル-1,3-ブタジエンとクマリン６、ＤＣＭ１を適度
な比率でドープした有機発光層をスピンコート法で積層
し、更にマグネシウム−銀合金の金属電極を２元蒸着で
積層した。液晶パネルの裏面に接着剤４を介してプラス
チックフィルムの拡散板を貼り付け、更に接着剤４を介
して有機ＥＬ面状発光体のフィルムを貼り付けてある。
拡散板の両面を貼り付けることで、透過光量を約１５％
増やすことができた。拡散板には、適度な大きさの微粒
子を添加してある。(Embodiment 4) FIG. 4 is a schematic sectional view of a liquid crystal display device according to this embodiment. In FIG. 4, 1
Is a liquid crystal panel, 2 is a diffusion plate, and 3 is an organic EL planar light-emitting body. The liquid crystal panel is a STN-mode matrix display in which the comb electrodes are orthogonal to each other, and a polarizing plate is attached to the outside of the transparent substrate. The organic EL planar light-emitting body has an ITO transparent electrode formed on a plastic film substrate by a sputtering method,
An organic light-emitting layer obtained by doping poly (N-vinylcarbazole) with 1,1,4,4, -tetraphenyl-1,3-butadiene, coumarin 6 and DCM 1 at an appropriate ratio was laminated by spin coating, and magnesium was further added. -Silver alloy metal electrodes were deposited by binary evaporation. A diffusion plate made of a plastic film is attached to the back surface of the liquid crystal panel with an adhesive 4, and a film of an organic EL planar light-emitting body is further attached with the adhesive 4.
By attaching both sides of the diffusion plate, the amount of transmitted light is about 15%
I was able to increase. Fine particles of an appropriate size are added to the diffusion plate.
【００２１】液晶パネルに１／２００デューティで線順
次走査駆動により電圧を印加すると、明るい反射型の液
晶表示が実現できた。液晶パネルの裏面に、通常の反射
専用板を貼りつけた反射型液晶表示装置と、表示品位に
おいてほとんど差異がなかった。また、有機ＥＬ面状発
光体に、透明電極を陽極とする昇圧させた１５ボルトの
電圧を印加すると、液晶パネルの表面で５０カンデラの
輝度が得られた。発光色は白色であった。When a voltage was applied to the liquid crystal panel by line-sequential scanning drive at 1/200 duty, a bright reflective liquid crystal display could be realized. There was almost no difference in display quality from the reflective liquid crystal display device in which a normal reflection-only plate was attached to the back surface of the liquid crystal panel. Further, when a boosted voltage of 15 V with a transparent electrode serving as an anode was applied to the organic EL planar light-emitting body, a brightness of 50 candela was obtained on the surface of the liquid crystal panel. The luminescent color was white.
【００２２】ゲーム器等のポータブル機器に前記液晶表
示装置を登載すると、必要に応じてバックライト照明を
させることができた。白色の発光色のため、違和感の無
い見やすい表示を提供できた。屋外においては、通常の
反射型液晶表示として用いることができる。When the liquid crystal display device was mounted on a portable device such as a game machine, it was possible to illuminate the backlight as required. The white luminescent color provided an easy-to-read display with no discomfort. It can be used as a normal reflective liquid crystal display outdoors.
【００２３】（実施例５）本実施例における液晶表示装
置の、模式的な断面図を図５に示す。図５において、１
は液晶パネル、３が有機ＥＬ面状発光体である。液晶パ
ネルは、偏光板を用いないＰＤＬＣ（ポリマー分散型液
晶）モードであり、ＭＩＭ素子によるアクティブマトリ
クス表示である。有機ＥＬ面状発光体は裏面に凹凸を有
するプラスチック基板上にＩＴＯ透明電極を真空蒸着法
で形成し、トリフェニルアミン誘導体とベリリウムベン
ゾキノリノール錯体の２層からなる有機発光層を真空蒸
着法で積層し、更にマグネシウム−インジウム合金の金
属電極を２元蒸着で積層した。(Embodiment 5) FIG. 5 shows a schematic sectional view of a liquid crystal display device according to the present embodiment. In FIG. 5, 1
Is a liquid crystal panel, and 3 is an organic EL planar light emitter. The liquid crystal panel is a PDLC (polymer dispersion type liquid crystal) mode that does not use a polarizing plate, and is an active matrix display using MIM elements. The organic EL planar light-emitting body is formed by forming an ITO transparent electrode on a plastic substrate having an uneven back surface by a vacuum deposition method, and stacking an organic light-emitting layer composed of two layers of a triphenylamine derivative and a beryllium benzoquinolinol complex by a vacuum deposition method. Then, a metal electrode of magnesium-indium alloy was further laminated by binary vapor deposition.
【００２４】６４０×４００画素の液晶パネルにおい
て、ＭＩＭ素子により液晶層に電圧を印加すると、モノ
クロの明るい反射型の液晶表示が実現できた。液晶パネ
ルの裏面に、通常の反射専用板を貼りつけた反射型液晶
表示装置と、表示品位においてほとんど差異がなかっ
た。また、有機ＥＬ面状発光体に、透明電極を陽極とす
る１２ボルトの電圧を印加すると、液晶パネルの表面で
１００カンデラの輝度が得られた。発光色は青緑色であ
った。In the liquid crystal panel of 640 × 400 pixels, when a voltage was applied to the liquid crystal layer by the MIM element, monochrome bright reflective liquid crystal display could be realized. There was almost no difference in display quality from the reflective liquid crystal display device in which a normal reflection-only plate was attached to the back surface of the liquid crystal panel. Further, when a voltage of 12 V with the transparent electrode serving as an anode was applied to the organic EL planar light-emitting body, a brightness of 100 candela was obtained on the surface of the liquid crystal panel. The emission color was blue-green.
【００２５】パームトップのパーソナルコンピュータに
前記液晶表示装置を登載すると、必要に応じてバックラ
イト照明をさせることができた。表面輝度が高いため、
昼間でも見やすい表示を提供できた。屋外においては、
通常の反射型液晶表示として用いることができる。When the liquid crystal display device was mounted on a palmtop personal computer, it was possible to illuminate the backlight as necessary. Since the surface brightness is high,
We were able to provide a display that was easy to see even during the day. Outdoors,
It can be used as a normal reflective liquid crystal display.
【００２６】（実施例６）本実施例における液晶表示装
置の、模式的な断面図を図６に示す。図６において、１
は液晶パネル、３が有機ＥＬ面状発光体である。液晶パ
ネルはＴＮモードであり、ＴＦＴ素子によるアクティブ
マトリクス表示である。有機ＥＬ面状発光体は表面に凹
凸を有するプラスチック基板上にＩＴＯ透明電極をスパ
ッタ法で形成し、ポリ（Ｎ−ビニルカルバゾール）に1,
1,4,4,-テトラフェニル-1,3-ブタジエンとクマリン６、
ＤＣＭ１を適度な比率でドープした有機発光層をスピン
コート法で積層し、更にアルミニウム−リチウム合金の
金属電極を２元蒸着で積層した。(Embodiment 6) FIG. 6 is a schematic sectional view of a liquid crystal display device according to this embodiment. In FIG. 6, 1
Is a liquid crystal panel, and 3 is an organic EL planar light emitter. The liquid crystal panel is in the TN mode and is an active matrix display using TFT elements. The organic EL planar light-emitting body is formed by forming an ITO transparent electrode on a plastic substrate having irregularities on the surface by a sputtering method to form poly (N-vinylcarbazole)
1,4,4, -tetraphenyl-1,3-butadiene and coumarin 6,
An organic light emitting layer doped with DCM1 at an appropriate ratio was laminated by spin coating, and a metal electrode of aluminum-lithium alloy was further laminated by binary vapor deposition.
【００２７】６４０×４００画素の液晶パネルにおい
て、ＴＦＴ素子により液晶層に電圧を印加すると、モノ
クロの明るい反射型の液晶表示が実現できた。液晶パネ
ルの裏面に、通常の反射専用板を貼りつけた反射型液晶
表示装置と、表示品位においてほとんど差異がなかっ
た。また、有機ＥＬ面状発光体に、透明電極を陽極とす
る２０ボルトの電圧を印加すると、液晶パネルの表面で
１００カンデラの輝度が得られた。発光色は白色であっ
た。In the liquid crystal panel of 640 × 400 pixels, when a voltage is applied to the liquid crystal layer by the TFT element, monochrome bright reflection type liquid crystal display can be realized. There was almost no difference in display quality from the reflective liquid crystal display device in which a normal reflection-only plate was attached to the back surface of the liquid crystal panel. When a voltage of 20 V with a transparent electrode serving as an anode was applied to the organic EL planar light-emitting body, a brightness of 100 candela was obtained on the surface of the liquid crystal panel. The luminescent color was white.
【００２８】パームトップのパーソナルコンピュータに
前記液晶表示装置を登載すると、必要に応じてバックラ
イト照明をさせることができた。表面輝度が高く白黒の
表のいため、昼間でも見やすい表示を提供できた。屋外
においては、通常の反射型液晶表示として用いることが
できる。When the liquid crystal display device was mounted on a palmtop personal computer, it was possible to illuminate the backlight as necessary. Because of its high surface brightness and black and white surface, it was possible to provide a display that was easy to see even during the day. It can be used as a normal reflective liquid crystal display outdoors.
【００２９】（比較例１）本比較例における液晶表示装
置の、模式的な断面図を図７に示す。図７において、１
は液晶パネル、５が半透過反射板、６がバインダー中に
蛍光体を分散させたシート状のＥＬ面状発光体である。
液晶パネルは、ＴＮモードの固定表示であり、その裏面
に接着剤４を介してプラスチックフィルムの半透過反射
板を貼り付けてある。半透過反射板は、表面に凹凸のあ
るプラスチックフィルム５１に、アルミニウム層５２を
反射率を調整した厚みで、真空蒸着法により形成してい
る。ＥＬ面状発光体はプラスチックフィルム６１上にＩ
ＴＯ透明電極６２、発光層６３、絶縁層６４、背面電極
６５を順次積層してある。(Comparative Example 1) FIG. 7 shows a schematic sectional view of a liquid crystal display device in this comparative example. In FIG. 7, 1
Is a liquid crystal panel, 5 is a semi-transmissive reflection plate, and 6 is a sheet-like EL planar light-emitting body in which a phosphor is dispersed in a binder.
The liquid crystal panel is a fixed display in the TN mode, and a semi-transmissive reflection plate of a plastic film is attached to the back surface of the liquid crystal panel via an adhesive 4. The semi-transmissive reflection plate is formed by a vacuum vapor deposition method on a plastic film 51 having an uneven surface, and an aluminum layer 52 having a thickness adjusted for reflectance. The EL planar light-emitting body is I on the plastic film 61.
A TO transparent electrode 62, a light emitting layer 63, an insulating layer 64, and a back electrode 65 are sequentially laminated.
【００３０】液晶パネルにスタティック駆動により３ボ
ルトの電圧を印加すると、適度な明るさの、反射型の液
晶表示が得られた。また、バインダー中に蛍光体を分散
させたシート状のＥＬ面状発光体に、７０ボルトに昇圧
した電圧を４００ヘルツの交流で印加すると、液晶パネ
ルの表面で４カンデラの輝度が得られた。発光色は青緑
色であった。When a voltage of 3 V was applied to the liquid crystal panel by static drive, a reflection type liquid crystal display with appropriate brightness was obtained. Further, when a voltage boosted to 70 V was applied with an alternating current of 400 Hz to a sheet-shaped EL planar light-emitting body in which a phosphor was dispersed in a binder, a brightness of 4 candela was obtained on the surface of the liquid crystal panel. The emission color was blue-green.
【００３１】腕時計に前記液晶表示装置を登載すると、
３ボルトの電池で通常の時刻表示を行い、必要に応じて
夜間照明をさせることができた。しかし７０ボルトに昇
圧するコイルと、周波数変換する電気回路が別途必要に
なった。また、４カンデラの輝度では、十分な視認性が
得られなかった。When the liquid crystal display device is mounted on a wristwatch,
A 3 volt battery provided the usual time of day display and night lighting as needed. However, a coil for boosting the voltage to 70 V and an electric circuit for frequency conversion are required separately. Further, with a brightness of 4 candela, sufficient visibility was not obtained.
【００３２】[0032]
【発明の効果】以上述べたように、本発明によれば液晶
パネルの背後に、光散乱機能を有する拡散板が配置さ
れ、更に有機ＥＬ面状発光体を配置するか、または、液
晶パネルの背後に、表面または裏面に凹凸を有する透明
基板上に透明電極と有機発光層及び金属電極が積層され
た有機ＥＬ面状発光体を配置することにより、通常は明
るい反射型の液晶表示装置であり、必要に応じてバック
ライト照明が可能で、しかもインバータ回路が不要であ
り、また自由な発光色選択のできる液晶表示装置を提供
することができた。As described above, according to the present invention, a diffusion plate having a light scattering function is arranged behind a liquid crystal panel and further an organic EL planar light-emitting body is arranged, or a liquid crystal panel By arranging an organic EL planar light-emitting body in which a transparent electrode, an organic light-emitting layer, and a metal electrode are laminated on a transparent substrate having a concavo-convex surface or a back surface, a normally reflective liquid crystal display device is provided. As a result, it is possible to provide a liquid crystal display device that can perform backlight illumination as necessary, does not require an inverter circuit, and can freely select the emission color.
【図１】本発明の実施例１における液晶表示装置を模式
的に表す断面図である。FIG. 1 is a cross-sectional view schematically showing a liquid crystal display device according to a first embodiment of the present invention.
【図２】本発明の実施例２における液晶表示装置を模式
的に表す断面図である。FIG. 2 is a sectional view schematically showing a liquid crystal display device according to a second embodiment of the present invention.
【図３】本発明の実施例３における液晶表示装置を模式
的に表す断面図である。FIG. 3 is a sectional view schematically showing a liquid crystal display device according to a third embodiment of the present invention.
【図４】本発明の実施例４における液晶表示装置を模式
的に表す断面図である。FIG. 4 is a sectional view schematically showing a liquid crystal display device according to a fourth embodiment of the present invention.
【図５】本発明の実施例５における液晶表示装置を模式
的に表す断面図である。FIG. 5 is a sectional view schematically showing a liquid crystal display device according to a fifth embodiment of the present invention.
【図６】本発明の実施例６における液晶表示装置を模式
的に表す断面図である。FIG. 6 is a sectional view schematically showing a liquid crystal display device according to a sixth embodiment of the present invention.
【図７】本発明の比較例１における液晶表示装置を模式
的に表す断面図である。FIG. 7 is a sectional view schematically showing a liquid crystal display device in Comparative Example 1 of the present invention.
１‥‥‥‥‥液晶パネル ２‥‥‥‥‥拡散板 ３‥‥‥‥‥有機ＥＬ面状発光体 ４‥‥‥‥‥接着剤 ５‥‥‥‥‥半透過反射板 ６‥‥‥‥‥バインダー中に蛍光体を分散させたシート
状のＥＬ面状発光体 １１‥‥‥‥‥ガラス基板 １２‥‥‥‥‥液晶 ３１‥‥‥‥‥透明基板 ３２‥‥‥‥‥透明電極 ３３‥‥‥‥‥有機発光層 ３４‥‥‥‥‥金属電極（全反射層） ３５‥‥‥‥‥裏面に凹凸を有する透明基板 ３６‥‥‥‥‥表面に凹凸を有する透明基板 ５１‥‥‥‥‥表面に凹凸を有する透明基板 ５２‥‥‥‥‥アルミニウム層 ６１‥‥‥‥‥透明基板 ６２‥‥‥‥‥透明電極 ６３‥‥‥‥‥発光層 ６４‥‥‥‥‥絶縁層 ６５‥‥‥‥‥背面電極1 ‥‥‥‥‥ Liquid crystal panel 2 ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ Sheet-like EL surface light-emitting body in which a phosphor is dispersed in a binder 11 ‥‥‥‥ Glass substrate 12 ‥‥‥‥ Liquid crystal 31 ‥‥‥ Transparent substrate 32 ‥‥‥‥‥ 33: Organic light emitting layer 34: Metal electrode (total reflection layer) 35: Transparent substrate having irregularities on the back surface 36: Transparent substrate having irregularities on the surface 51. ‥‥‥‥ Transparent substrate 52 having irregularities on the surface ‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥‥ Transparent electrode 62 Layer 65: Back electrode
Claims (6)
基板で挾持した液晶パネルの背後に、光散乱機能を有す
る拡散板が配置され、拡散板の背後に透明基板に透明電
極と有機発光層及び金属電極が積層された有機ＥＬ（エ
レクトロルミネッセンス）面状発光体が配置されたこと
を特徴とする液晶表示装置。1. A diffusion plate having a light-scattering function is disposed behind a liquid crystal panel in which liquid crystal is sandwiched between two transparent electrodes, and a transparent substrate and a transparent electrode are provided behind the diffusion plate. A liquid crystal display device comprising an organic EL (electroluminescence) planar light-emitting body, in which a light-emitting layer and a metal electrode are laminated.
拡散板を接着層を介して貼り付け、該液晶パネルの背後
に有機ＥＬ面状発光体が配置されたことを特徴とする請
求項１記載の液晶表示装置。2. A diffusion plate having a light scattering function is attached to the back surface of the liquid crystal panel via an adhesive layer, and an organic EL planar light-emitting body is arranged behind the liquid crystal panel. The described liquid crystal display device.
る拡散板を接着層を介して貼り付けた有機ＥＬ面状発光
体が配置されたことを特徴とする請求項１記載の液晶表
示装置。3. The liquid crystal display device according to claim 1, wherein an organic EL planar light-emitting body, in which a diffusion plate having a light scattering function is attached via an adhesive layer, is arranged behind the liquid crystal panel. .
拡散板を接着層を介して貼り付け、更に有機ＥＬ面状発
光体を接着層を介して貼り付けたことを特徴とする請求
項１記載の液晶表示装置。4. A diffusion plate having a light scattering function is attached to the back surface of the liquid crystal panel via an adhesive layer, and an organic EL planar light-emitting body is further attached via the adhesive layer. The described liquid crystal display device.
基板で挾持した液晶パネルの背後に、表面に凹凸を有す
る透明基板上に透明電極と有機発光層及び金属電極が積
層された有機ＥＬ面状発光体が配置されたことを特徴と
する液晶表示装置。5. An organic material in which a transparent electrode, an organic light emitting layer, and a metal electrode are laminated on a transparent substrate having a concave and convex surface on the back of a liquid crystal panel in which a liquid crystal is held between two transparent electrodes. A liquid crystal display device comprising an EL planar light-emitting body.
基板で挾持した液晶パネルの背後に、裏面に凹凸を有す
る透明基板上に透明電極と有機発光層及び金属電極が積
層された有機ＥＬ面状発光体が配置されたことを特徴と
する液晶表示装置。6. An organic material in which a transparent electrode, an organic light emitting layer, and a metal electrode are laminated on a transparent substrate having an uneven surface on the back side of a liquid crystal panel in which liquid crystal is sandwiched between two transparent electrodes. A liquid crystal display device comprising an EL planar light-emitting body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20454295A JP3582160B2 (en) | 1995-08-10 | 1995-08-10 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20454295A JP3582160B2 (en) | 1995-08-10 | 1995-08-10 | Liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0950031A true JPH0950031A (en) | 1997-02-18 |
| JP3582160B2 JP3582160B2 (en) | 2004-10-27 |
Family
ID=16492250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20454295A Expired - Fee Related JP3582160B2 (en) | 1995-08-10 | 1995-08-10 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3582160B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0963770A (en) * | 1995-08-24 | 1997-03-07 | Kemipuro Kasei Kk | White light emitting single layer type organic electroluminescent element |
| JPH10125461A (en) * | 1996-10-18 | 1998-05-15 | Sony Corp | Reflection type liquid crystal device |
| WO1999026389A1 (en) * | 1997-11-14 | 1999-05-27 | Maxon Systems Inc. (London) Ltd. | Mobile handheld telephone |
| WO2000036582A1 (en) * | 1998-12-15 | 2000-06-22 | Citizen Watch Co., Ltd. | Electronic device |
| JP2002062530A (en) * | 2000-06-05 | 2002-02-28 | Toshiba Corp | Backlight for color liquid crystal, color liquid crystal display device and el (electroluminescence) light- emitting element for backlight for color liquid crystal |
| US7067974B2 (en) | 2003-05-16 | 2006-06-27 | Kabushiki Kaisha Toyota Jidoshokki | Light-emitting apparatus and method for forming the same |
| US7071617B2 (en) | 2003-05-16 | 2006-07-04 | Kabushiki Kaisha Toyota Jidoshokki | Light-emitting apparatus and method for forming the same |
| US7248235B2 (en) | 2001-09-14 | 2007-07-24 | Sharp Kabushiki Kaisha | Display, method of manufacturing the same, and method of driving the same |
| JP2007225633A (en) * | 2006-02-21 | 2007-09-06 | Seiko Instruments Inc | Display device and liquid crystal display device |
| JP2007529863A (en) * | 2004-03-16 | 2007-10-25 | エルジー・ケム・リミテッド | High-efficiency organic light-emitting device using substrate or electrode having nano-sized hemispherical protrusions and method for producing the same |
| JP2010245056A (en) * | 2000-04-21 | 2010-10-28 | Semiconductor Energy Lab Co Ltd | Self-light emitting device and electrical appliance |
| JP2012203105A (en) * | 2011-03-24 | 2012-10-22 | Dainippon Printing Co Ltd | Light-diffusing film, optical module and display device |
| JP2013206794A (en) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | Luminaire, liquid crystal display device, and display device |
-
1995
- 1995-08-10 JP JP20454295A patent/JP3582160B2/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0963770A (en) * | 1995-08-24 | 1997-03-07 | Kemipuro Kasei Kk | White light emitting single layer type organic electroluminescent element |
| JPH10125461A (en) * | 1996-10-18 | 1998-05-15 | Sony Corp | Reflection type liquid crystal device |
| WO1999026389A1 (en) * | 1997-11-14 | 1999-05-27 | Maxon Systems Inc. (London) Ltd. | Mobile handheld telephone |
| WO2000036582A1 (en) * | 1998-12-15 | 2000-06-22 | Citizen Watch Co., Ltd. | Electronic device |
| US6593901B1 (en) | 1998-12-15 | 2003-07-15 | Citizen Watch Co., Ltd. | Electronic device |
| JP2010245056A (en) * | 2000-04-21 | 2010-10-28 | Semiconductor Energy Lab Co Ltd | Self-light emitting device and electrical appliance |
| US9923171B2 (en) | 2000-04-21 | 2018-03-20 | Semiconductor Energy Laboratory Co., Ltd. | Self-light emitting device and electrical appliance using the same |
| US8686624B2 (en) | 2000-04-21 | 2014-04-01 | Semiconductor Energy Laboratory Co., Ltd. | Self-light emitting device and electrical appliance using the same |
| JP2002062530A (en) * | 2000-06-05 | 2002-02-28 | Toshiba Corp | Backlight for color liquid crystal, color liquid crystal display device and el (electroluminescence) light- emitting element for backlight for color liquid crystal |
| US7248235B2 (en) | 2001-09-14 | 2007-07-24 | Sharp Kabushiki Kaisha | Display, method of manufacturing the same, and method of driving the same |
| US7122958B2 (en) | 2003-05-16 | 2006-10-17 | Kabushiki Kaisha Toyota Jidoshokki | Light-emitting apparatus and method for forming the same |
| US7071617B2 (en) | 2003-05-16 | 2006-07-04 | Kabushiki Kaisha Toyota Jidoshokki | Light-emitting apparatus and method for forming the same |
| US7067974B2 (en) | 2003-05-16 | 2006-06-27 | Kabushiki Kaisha Toyota Jidoshokki | Light-emitting apparatus and method for forming the same |
| JP2007529863A (en) * | 2004-03-16 | 2007-10-25 | エルジー・ケム・リミテッド | High-efficiency organic light-emitting device using substrate or electrode having nano-sized hemispherical protrusions and method for producing the same |
| US7741145B2 (en) | 2004-03-16 | 2010-06-22 | Lg Chem. Ltd. | Highly efficient organic light-emitting device using substrate or electrode having nanosized half-spherical convex and method for preparing the same |
| US8158971B2 (en) | 2004-03-16 | 2012-04-17 | Lg Chem. Ltd. | Highly efficient organic light-emitting device using substrate or electrode having nanosized half-spherical convex and method for preparing the same |
| JP2007225633A (en) * | 2006-02-21 | 2007-09-06 | Seiko Instruments Inc | Display device and liquid crystal display device |
| JP2012203105A (en) * | 2011-03-24 | 2012-10-22 | Dainippon Printing Co Ltd | Light-diffusing film, optical module and display device |
| JP2013206794A (en) * | 2012-03-29 | 2013-10-07 | Toppan Printing Co Ltd | Luminaire, liquid crystal display device, and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3582160B2 (en) | 2004-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7176991B2 (en) | Display | |
| US6211613B1 (en) | High contrast electroluminescent displays | |
| CN1332254C (en) | Image display | |
| TWI393950B (en) | Transflective display panel | |
| JP4608637B2 (en) | Transflective display with full color OLED backlight | |
| US6954239B2 (en) | Display unit | |
| CN1967328B (en) | Display apparatus, method for manufacturing and driving the same | |
| US8325290B2 (en) | Dual liquid crystal display device | |
| JP2003058069A (en) | Self-luminescence type picture display device | |
| JP3582160B2 (en) | Liquid crystal display | |
| US7920228B2 (en) | Dual liquid crystal display device | |
| JP4711273B2 (en) | Illuminated liquid crystal display device | |
| JP2005049522A (en) | Double-sided liquid crystal display device | |
| US20070057881A1 (en) | Transflective display having an OLED region and an LCD region | |
| JP4954911B2 (en) | Display device | |
| JP3933915B2 (en) | Illumination device with reflection layer and liquid crystal display device | |
| JP2002537581A (en) | Liquid crystal display | |
| JP4608768B2 (en) | Liquid crystal display device | |
| JP3672060B2 (en) | Reflective liquid crystal device | |
| CN100468158C (en) | Liquid-crystal display device | |
| US7916243B2 (en) | Dual liquid crystal display device | |
| JP2000098360A (en) | Liquid crystal device | |
| JP2001042308A (en) | Liquid crystal device and electronic instrument | |
| JP2002072206A (en) | Liquid crystal display device | |
| JP2003107470A (en) | Liquid crystal display element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040706 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040719 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20070806 Year of fee payment: 3 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080806 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080806 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090806 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090806 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100806 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110806 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120806 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130806 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |