JPH10206850A - Liquid crystal display device using fluorescence - Google Patents
Liquid crystal display device using fluorescenceInfo
- Publication number
- JPH10206850A JPH10206850A JP9359486A JP35948697A JPH10206850A JP H10206850 A JPH10206850 A JP H10206850A JP 9359486 A JP9359486 A JP 9359486A JP 35948697 A JP35948697 A JP 35948697A JP H10206850 A JPH10206850 A JP H10206850A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- light
- light source
- crystal cell
- crystal display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は液晶表示装置に係
り、より詳しくは蛍光体の発光でカラー画像を具現する
ことができる構造を有しながら画面の輝度を向上させる
ことができる蛍光体発光を用いた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 liquid crystal display device, and more particularly, to a liquid crystal display device having a structure capable of realizing a color image by light emission of a phosphor and improving a luminance of a screen. The present invention relates to a liquid crystal display device used.
【０００２】[0002]
【従来の技術】一般に、液晶表示装置（ＬＣＤ；Liquid
Crystal Display）においてカラー画像は、前記装置に
電圧が印加されると透明電極マトリックスの間にある液
晶物質の配向が変化して光透過率が調節され、光がカラ
ーフィルター層を通過しながら固有色に変化して放出さ
れることにより具現される。2. Description of the Related Art Generally, a liquid crystal display (LCD)
In a crystal display, when a voltage is applied to the device, the orientation of the liquid crystal material between the transparent electrode matrices changes, the light transmittance is adjusted, and the light passes through the color filter layer to form a unique color image. And is embodied by being released.
【０００３】従来の液晶表示装置において用いられるカ
ラーフィルターは顔料を含んでおり、光源から出た光量
を１／３程度のみ放出するので、エネルギー利用が非効
率的である。また、画像を表示するために十分な光を放
出するための非常に強い光源を、前記カラーフィルター
を用いる液晶表示装置に用いなければならない。最近、
エネルギー効率を増加させるため、カラーフィルターの
代わりに赤色、緑色および青色蛍光体を用いる液晶表示
装置に対して研究がなされている。前記蛍光体を用いた
液晶表示装置において、前記蛍光体は液晶セルの駆動電
極マトリックスと同一の位置にＲ，Ｇ，Ｂ蛍光体がドッ
トまたはストライプ形態で形成されている。前記蛍光体
は特定の波長数を有する光源により励起される。A color filter used in a conventional liquid crystal display device contains a pigment and emits only about one third of the amount of light emitted from a light source, so that energy utilization is inefficient. Also, a very strong light source that emits sufficient light to display an image must be used in a liquid crystal display using the color filter. Recently,
In order to increase energy efficiency, research has been conducted on liquid crystal displays using red, green and blue phosphors instead of color filters. In a liquid crystal display device using the phosphor, R, G, and B phosphors are formed in the same position as a drive electrode matrix of a liquid crystal cell in the form of dots or stripes. The phosphor is excited by a light source having a specific number of wavelengths.
【０００４】すなわち、従来の蛍光体発光を用いてカラ
ー画像を表示する液晶表示装置は、液晶セル、紫外線や
青色領域以下の可視光線を発する光源および前記液晶セ
ルと前記光源との間に配列されるか前記液晶セルの前面
に配列される蛍光体層を含む。前記紫外線光源から放出
される紫外線は前記蛍光体層を励起してカラー画像を形
成する。That is, a conventional liquid crystal display device for displaying a color image using phosphor light emission includes a liquid crystal cell, a light source that emits ultraviolet light or visible light below the blue region, and an arrangement between the liquid crystal cell and the light source. Or a phosphor layer arranged in front of the liquid crystal cell. Ultraviolet light emitted from the ultraviolet light source excites the phosphor layer to form a color image.
【０００５】このように従来の蛍光体発光を用いた液晶
表示装置は、液晶セルの前面に発光される蛍光体層の特
性により、動作時に視野角の拡大および色純度の改善な
どの利点を有することになる。As described above, the conventional liquid crystal display device using phosphor light emission has advantages such as expansion of the viewing angle and improvement of color purity during operation due to the characteristics of the phosphor layer emitted on the front surface of the liquid crystal cell. Will be.
【０００６】[0006]
【発明が解決しようとする課題】前記液晶表示装置の動
作の際、前記蛍光体層の前後面に各蛍光体が励起されて
発光される光が出ることになるが、この光すべてが液晶
セルの前面に放出されるようにすることが好ましい。し
かしながら、従来の蛍光体発光を用いた液晶表示装置に
おいては、蛍光体層の後面に放射される光をさらに液晶
セルの前面に反射せしめる特別な部材が備えられていな
いため、前記光を無駄に損失することになり、これによ
って画面の輝度が低下しているのが実情である。In the operation of the liquid crystal display device, light emitted when each phosphor is excited is emitted on the front and rear surfaces of the phosphor layer. It is preferable to be discharged to the front surface of the vehicle. However, in a conventional liquid crystal display device using phosphor light emission, there is no special member for reflecting light radiated from the rear surface of the phosphor layer to the front surface of the liquid crystal cell. In reality, the brightness of the screen is reduced.
【０００７】本発明は前記従来の問題点を解決するため
のものであって、その目的は、蛍光体層の後面に放射さ
れる光を良好に液晶セルの前面に送り、具現する画像の
輝度特性を向上させることができる蛍光体発光を用いた
液晶表示装置を提供することにある。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to satisfactorily transmit the light radiated from the rear surface of the phosphor layer to the front surface of the liquid crystal cell so that the brightness of the embodied image can be improved. An object of the present invention is to provide a liquid crystal display device using phosphor light emission capable of improving characteristics.
【０００８】[0008]
【課題を解決するための手段】前記目的を達成するた
め、本発明は、３８０〜４１０nmの波長範囲で主発光ピ
ークを有する光(deep-blue light) を放出する光源と、
前記光源上に配置される液晶セルと、前記光源と前記液
晶セルとの間に配置され、前記光源から放出される光に
より励起される蛍光膜と、前記光源と前記蛍光膜との間
に配置され、前記蛍光膜から発生される光を前記光源の
反対方向に反射させる反射フィルター層とを含む蛍光体
発光を用いた液晶表示装置を提供する。In order to achieve the above object, the present invention provides a light source which emits light having a main emission peak in a wavelength range of 380 to 410 nm (deep-blue light),
A liquid crystal cell disposed on the light source, a fluorescent film disposed between the light source and the liquid crystal cell, and excited by light emitted from the light source, and disposed between the light source and the fluorescent film; And a reflection filter layer for reflecting light generated from the fluorescent film in a direction opposite to the light source.
【０００９】さらに、本発明は、３８０〜４１０nmの波
長範囲で主発光ピークを有する光(deep-blue light) を
放出する光源と、前記光源上に配置される液晶セルと、
前記液晶セル上に配置され、前記光源から放出される光
により励起される蛍光膜と、前記液晶セルと前記蛍光膜
との間に配置され、前記蛍光膜から発生される光を前記
光源の反対方向に反射させる反射フィルター層とを含む
蛍光体発光を用いた液晶表示装置を提供する。Further, the present invention provides a light source which emits light having a main emission peak in a wavelength range of 380 to 410 nm (deep-blue light), a liquid crystal cell arranged on the light source,
A fluorescent film disposed on the liquid crystal cell and excited by light emitted from the light source; and a fluorescent film disposed between the liquid crystal cell and the fluorescent film, the light generated from the fluorescent film being opposite to the light source. Provided is a liquid crystal display device using phosphor light emission including a reflection filter layer that reflects light in a direction.
【００１０】前記蛍光膜を構成する赤、緑、青色の蛍光
体は、本発明に従い３８０〜４１０nmの波長範囲で主発
光ピークを有する光(deep-blue light) により励起され
るすべての蛍光体で備えられる。The red, green and blue phosphors constituting the phosphor film are all phosphors excited by light having a main emission peak (deep-blue light) in a wavelength range of 380 to 410 nm according to the present invention. Be provided.
【００１１】[0011]
【発明の実施の形態】以下、本発明の好ましい実施形態
を添付図面に基づいて詳細に説明する。図１は本発明に
従う液晶表示装置の構成配列を説明するために示す分解
斜視図であり、図２は本発明に従う液晶表示装置の結合
断面図である。同図において、符号１は液晶セルであ
る。Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view illustrating a configuration of a liquid crystal display according to the present invention, and FIG. 2 is a cross-sectional view of the liquid crystal display according to the present invention. In the figure, reference numeral 1 denotes a liquid crystal cell.
【００１２】前記液晶セル１は、通常と同様に両基板１
０ａ、１２ａの間に液晶層１４ａが位置し、前記両基板
１０ａ，１２ａの側面には偏光板１６ａ、１８ａがそれ
ぞれ取付けられている。前記両基板１０ａ、１２ａ内面
には透明導電膜からなる電極２０ａが所定のパターンで
形成されている。上記において、液晶層１４ａは通常の
ＴＮ(twisted nematic) 液晶やＳＴＮ(super twisted n
ematic) 液晶はもちろん、ＦＬＣ(ferroelectric liqui
d crystal)やＰＤＬＣ(polymer dispersed liquid crys
tal)液晶を用いてもよい。The liquid crystal cell 1 is composed of two substrates 1 in the same manner as usual.
A liquid crystal layer 14a is located between the first and second substrates 0a and 12a, and polarizing plates 16a and 18a are attached to side surfaces of the substrates 10a and 12a, respectively. Electrodes 20a made of a transparent conductive film are formed in a predetermined pattern on the inner surfaces of both substrates 10a and 12a. In the above, the liquid crystal layer 14a is formed of a normal TN (twisted nematic) liquid crystal or STN (super twisted nmatic).
ematic) Liquid crystal, FLC (ferroelectric liqui
d crystal) or PDLC (polymer dispersed liquid crys)
tal) Liquid crystal may be used.
【００１３】本発明の液晶表示装置は、かかる液晶セル
１と共にこの液晶セル１の一側面に配置される蛍光膜３
を含んで形成されるが、この蛍光膜３はＲ，Ｇ，Ｂ蛍光
体が前記液晶セル１の駆動電極マトリックスと一致する
位置にドットまたはストライプ形態を保持して形成する
ことによりなされる。このとき、前記蛍光膜３を構成す
るＲ，Ｇ，Ｂ蛍光体は、本発明に従い特定の波長を有す
る、すなわち前記液晶セル１の後面に配置される光源５
から放出される３８０〜４１０nmの波長範囲で主発光ピ
ークを有する光(deep-blue light) により励起され得る
すべての蛍光体に用いることができる。The liquid crystal display device according to the present invention includes the liquid crystal cell 1 and the fluorescent film 3 disposed on one side of the liquid crystal cell 1.
The fluorescent film 3 is formed by forming the R, G, and B phosphors in a position corresponding to the drive electrode matrix of the liquid crystal cell 1 in a dot or stripe form. At this time, the R, G, B phosphors constituting the phosphor film 3 have a specific wavelength according to the present invention, that is, the light source 5 disposed on the rear surface of the liquid crystal cell 1.
Can be used for all phosphors that can be excited by light having a main emission peak in the wavelength range of 380 to 410 nm (deep-blue light).
【００１４】この実施例において、赤色蛍光体としては
６ＭｇＯ・Ａｓ2 Ｏ5 ：Ｍｎ、３．５ＭｇＯ０．５Ｍｇ
Ｆ2 ・ＧｅＯ2 ：Ｍｎ、ＹＶＯ：Ｅｕ3+、ＳｒＹ
2 Ｓ4 ：Ｅｕ3+、ＳｒＹ2 Ｓ4 ：Ｍｎなどが、緑色蛍光
体としてはＳｒＡｌ2 Ｏ4 ：Ｅｕ2+、ＳｒＧａ2 Ｓ4 ：
Ｅｕ2+、Ｙ3 Ａｌ5 Ｏ12：Ｃｅ3+、ＺｎＳ：Ｃｕ、Ｚｎ
Ｓ：Ｃｕ、Ｃｌ、ＺｎＳ：Ｃｕ、Ｃｌ、Ａｌなどが、青
色蛍光体としてはＳｒ10（ＰＯ4 ）6 Ｃｌ2 ：Ｅｕ2+、
ＢａＭｇＡｌ10Ｏ17：Ｅｕ2+、Ｓｒ3 ＭｇＳｉ2 Ｏ8：
Ｅｕ2+、Ｂａ3 ＭｇＳｉＯ8 ：Ｅｕ2+、ＺｎＳ：Ａｇ、
Ｃｌ、ＺｎＳ：Ａｇ、Ａｌなどが用いられる。In this embodiment, the red phosphor is 6MgO.As 2 O 5 : Mn, 3.5MgO0.5Mg.
F 2 · GeO 2 : Mn, YVO: Eu 3+ , SrY
2 S 4 : Eu 3+ , SrY 2 S 4 : Mn, etc., and SrAl 2 O 4 : Eu 2+ , SrGa 2 S 4 :
Eu 2+ , Y 3 Al 5 O 12 : Ce 3+ , ZnS: Cu, Zn
S: Cu, Cl, ZnS: Cu, Cl, Al, etc., and blue phosphors such as Sr 10 (PO 4 ) 6 Cl 2 : Eu 2+ ,
BaMgAl 10 O 17 : Eu 2+ , Sr 3 MgSi 2 O 8 :
Eu 2+ , Ba 3 MgSiO 8 : Eu 2+ , ZnS: Ag,
Cl, ZnS: Ag, Al or the like is used.
【００１５】一方、本発明による液晶表示装置において
は、前記した構成以外に前記蛍光膜３の後面に配置され
る反射フィルター層７をさらに含む。この反射フィルタ
ー層７は前記光源５から出る光を好ましくは９０％以上
透過しながら、液晶表示装置の動作の際、前記蛍光膜７
の後面から出る光を前記液晶セル１の前面側に反射させ
る役割をすることになる。On the other hand, the liquid crystal display device according to the present invention further includes a reflection filter layer 7 disposed on the rear surface of the fluorescent film 3 in addition to the above-described structure. The reflection filter layer 7 preferably transmits 90% or more of the light emitted from the light source 5 and, when the liquid crystal display device operates, operates the fluorescent film 7.
The light emitted from the rear surface of the liquid crystal cell 1 is reflected to the front surface side of the liquid crystal cell 1.
【００１６】前記のように構成される本発明の液晶表示
装置は、前記光源５から放出された光が前記蛍光膜３を
通過すると、この蛍光膜３においては前記光により蛍光
体が励起されながら所定の光を発することになり、この
光は前記液晶セル１を通過しながらこの液晶セル１の作
用に従い画像を具現することになる。かかる前記液晶表
示装置の作用の際、前記反射フィルター層７は前記蛍光
膜３の後面に出る光を前記液晶セル１の前面側に反射
し、これによって前記液晶セル１側に流入される光量は
増大することになる。In the liquid crystal display device of the present invention configured as described above, when the light emitted from the light source 5 passes through the fluorescent film 3, the fluorescent material in the fluorescent film 3 is excited by the light. A predetermined light is emitted, and the light passes through the liquid crystal cell 1 to realize an image according to the action of the liquid crystal cell 1. During the operation of the liquid crystal display device, the reflection filter layer 7 reflects the light emitted from the rear surface of the fluorescent film 3 to the front surface of the liquid crystal cell 1, whereby the amount of light flowing into the liquid crystal cell 1 is reduced. Will increase.
【００１７】すなわち、前記液晶セル１から最終的に具
現される画像は、前記反射フィルター層７の作用で前記
蛍光膜３から放出される光の発光量が増大することによ
り、その輝度を向上させることができる。反射フィルタ
ーを用いた液晶表示装置用蛍光膜および反射フィルター
を用いない液晶表示装置用蛍光膜の輝度を測定し、その
結果を表１に示す。表１において、輝度は同一の強度の
光により励起される赤色、緑色および青色蛍光膜の相対
輝度である。That is, the brightness of the image finally realized from the liquid crystal cell 1 is improved by increasing the amount of light emitted from the fluorescent film 3 by the action of the reflection filter layer 7. be able to. The luminance of the fluorescent film for a liquid crystal display device using a reflective filter and the luminance of the fluorescent film for a liquid crystal display device without a reflective filter were measured, and the results are shown in Table 1. In Table 1, the luminance is the relative luminance of the red, green, and blue phosphor films excited by light of the same intensity.
【００１８】[0018]
【表１】 [Table 1]
【００１９】上記表１において、前記反射フィルター層
７の使用の可否に従い、蛍光体の輝度、つまり、液晶表
示装置の後面に位置させる場合、前記液晶表示装置に具
現される画面の輝度がほぼ２０％上昇することがわか
る。一方、この実施例においては前記蛍光膜３と前記反
射フィルター層７とを前記液晶セル１の後面側に配置さ
せて前記液晶表示装置を構成した例について説明した
が、本発明は前記蛍光膜３と反射フィルター層７とを前
記液晶セル１の前面側に配置させる他の実施例を通じて
構成することができる。In Table 1, according to whether the reflection filter layer 7 is used or not, the luminance of the phosphor, that is, the luminance of the screen embodied in the liquid crystal display device is approximately 20% when the phosphor is located on the rear surface of the liquid crystal display device. % Increase. On the other hand, in this embodiment, an example was described in which the liquid crystal display device was configured by arranging the fluorescent film 3 and the reflection filter layer 7 on the rear surface side of the liquid crystal cell 1. It can be configured through another embodiment in which the reflection filter layer 7 and the reflection filter layer 7 are disposed on the front side of the liquid crystal cell 1.
【００２０】前述したように、蛍光膜３と反射フィルタ
ー層７とを前記液晶セル１の前面側に配置して製造した
液晶表示装置（ＬＣＤ）および反射フィルターを使用し
ない液晶表示装置の色座標および輝度を測定し、その結
果を表２に示す。表２において、輝度は同一の強度の光
により励起される赤色、緑色および青色蛍光膜の相対輝
度である。As described above, the color coordinates and the color coordinates of the liquid crystal display (LCD) manufactured by disposing the fluorescent film 3 and the reflection filter layer 7 on the front side of the liquid crystal cell 1 and the liquid crystal display not using the reflection filter are manufactured. The luminance was measured, and the results are shown in Table 2. In Table 2, the luminance is the relative luminance of the red, green, and blue phosphor films excited by light of the same intensity.
【００２１】[0021]
【表２】 [Table 2]
【００２２】また、本発明においては前記蛍光膜３の構
成の際、各蛍光体のパターンの間にブラックマトリック
スを形成することになると、液晶表示装置のカラー画像
の具現の際、画面のコントラスト向上に効果を得ること
ができる。Further, in the present invention, when a black matrix is formed between the patterns of the phosphors when the phosphor film 3 is formed, the contrast of the screen is improved when the color image of the liquid crystal display device is realized. The effect can be obtained.
【００２３】[0023]
【発明の効果】以上のように、本発明による蛍光体を用
いた液晶表示装置は、蛍光体の発光により画像が具現さ
れるとき得られる利点である視野角の拡大および色純度
の改善以外にも、前記反射フィルター層による輝度上昇
により品質向上に利点を有する。As described above, the liquid crystal display device using the phosphor according to the present invention is advantageous in that an image can be realized by light emission of the phosphor, which is an advantage obtained when the viewing angle is increased and the color purity is improved. Also, there is an advantage in quality improvement due to an increase in luminance by the reflection filter layer.
【図１】本発明に従う液晶表示装置の構成配列を説明す
るために示す分解斜視図である。FIG. 1 is an exploded perspective view illustrating a configuration of a liquid crystal display device according to the present invention.
【図２】本発明に従う液晶表示装置の結合断面図であ
る。FIG. 2 is a combined sectional view of a liquid crystal display according to the present invention.
１ 液晶セル ３ 蛍光膜 ５ 光源 ７ 反射フィルター層 １０ａ，１２ａ 基板 １４ａ 液晶層 １６ａ，１８ａ 偏光板 ２０ａ 電極 DESCRIPTION OF SYMBOLS 1 Liquid crystal cell 3 Phosphor film 5 Light source 7 Reflection filter layer 10a, 12a Substrate 14a Liquid crystal layer 16a, 18a Polarizer 20a Electrode
Claims (4)
ークを有する光を放出する光源と、 前記光源上に配置される液晶セルと、 前記光源と前記液晶セルとの間に配置され、前記光源か
ら放出される光により励起される蛍光膜と、 前記光源と前記蛍光膜との間に配置され、前記蛍光膜か
ら発生される光を前記光源の反対方向に反射させる反射
フィルター層とを含む蛍光体発光を用いた液晶表示装
置。1. A light source that emits light having a main emission peak in a wavelength range of 380 to 410 nm; a liquid crystal cell disposed on the light source; and a light source disposed between the light source and the liquid crystal cell. A fluorescent film that is excited by light emitted from the light source; and a reflection filter layer that is disposed between the light source and the fluorescent film and that reflects light generated from the fluorescent film in a direction opposite to the light source. A liquid crystal display device using body light.
光体は、３８０〜４１０nmの波長範囲で主発光ピークを
有する光により励起される蛍光体で備えられる請求項１
に記載の蛍光体発光を用いた液晶表示装置。2. The red, green and blue phosphors constituting the phosphor film are phosphors excited by light having a main emission peak in a wavelength range of 380 to 410 nm.
6. A liquid crystal display device using the phosphor light emission according to claim 1.
ークを有する光を放出する光源と、 前記光源上に配置される液晶セルと、 前記液晶セル上に配置され、前記光源から放出される光
により励起される蛍光膜と、 前記液晶セルと前記蛍光膜との間に配置され、前記蛍光
膜から発生される光を前記光源の反対方向に反射させる
反射フィルター層とを含む蛍光体発光を用いた液晶表示
装置。3. A light source that emits light having a main emission peak in a wavelength range of 380 to 410 nm, a liquid crystal cell disposed on the light source, and light emitted from the light source disposed on the liquid crystal cell. And a reflection filter layer disposed between the liquid crystal cell and the phosphor film and reflecting light generated from the phosphor film in a direction opposite to the light source. Liquid crystal display device.
光体は、３８０〜４１０nmの波長範囲で主発光ピークを
有する光により励起される蛍光体で備えられる請求項３
に記載の蛍光体発光を用いた液晶表示装置。4. The red, green and blue phosphors constituting the phosphor film are phosphors excited by light having a main emission peak in a wavelength range of 380 to 410 nm.
6. A liquid crystal display device using the phosphor light emission according to claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960077980A KR100237218B1 (en) | 1996-12-30 | 1996-12-30 | Lcd device using fluorescent |
| KR1996P77980 | 1996-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10206850A true JPH10206850A (en) | 1998-08-07 |
Family
ID=19492740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9359486A Pending JPH10206850A (en) | 1996-12-30 | 1997-12-26 | Liquid crystal display device using fluorescence |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH10206850A (en) |
| KR (1) | KR100237218B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007532968A (en) * | 2004-04-15 | 2007-11-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Electrically controllable color conversion cell |
| JP2008287073A (en) * | 2007-05-18 | 2008-11-27 | Seiko Instruments Inc | Lighting device, display device and optical film |
| JP2010250259A (en) * | 2009-03-27 | 2010-11-04 | Epson Imaging Devices Corp | Liquid crystal display device |
| US7841730B2 (en) | 2003-09-02 | 2010-11-30 | Nitto Denko Corporation | Light source device and crystal display device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100806967B1 (en) * | 2000-11-28 | 2008-02-25 | 엘지.필립스 엘시디 주식회사 | Backlight Apparatus using the Ultraviolet Lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05165028A (en) * | 1991-12-11 | 1993-06-29 | Sharp Corp | Liquid crystal illuminating device |
-
1996
- 1996-12-30 KR KR1019960077980A patent/KR100237218B1/en active IP Right Grant
-
1997
- 1997-12-26 JP JP9359486A patent/JPH10206850A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7841730B2 (en) | 2003-09-02 | 2010-11-30 | Nitto Denko Corporation | Light source device and crystal display device |
| US8373829B2 (en) | 2003-09-02 | 2013-02-12 | Nitto Denko Corporation | Light source and liquid crystal display |
| JP2007532968A (en) * | 2004-04-15 | 2007-11-15 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Electrically controllable color conversion cell |
| US7576478B2 (en) * | 2004-04-15 | 2009-08-18 | Koninklijke Philips Electronics N.V. | Electrically controllable color conversion cell |
| JP2008287073A (en) * | 2007-05-18 | 2008-11-27 | Seiko Instruments Inc | Lighting device, display device and optical film |
| JP2010250259A (en) * | 2009-03-27 | 2010-11-04 | Epson Imaging Devices Corp | Liquid crystal display device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100237218B1 (en) | 2000-01-15 |
| MX9800429A (en) | 1998-06-28 |
| KR19980058648A (en) | 1998-10-07 |
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