KR0133158Y1 - Polarizing plate - Google Patents
Polarizing plate Download PDFInfo
- Publication number
- KR0133158Y1 KR0133158Y1 KR2019940032310U KR19940032310U KR0133158Y1 KR 0133158 Y1 KR0133158 Y1 KR 0133158Y1 KR 2019940032310 U KR2019940032310 U KR 2019940032310U KR 19940032310 U KR19940032310 U KR 19940032310U KR 0133158 Y1 KR0133158 Y1 KR 0133158Y1
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- South Korea
- Prior art keywords
- polarizing plate
- liquid crystal
- reflectance
- silver layer
- present
- Prior art date
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
Abstract
본 고안은 편광판에 관한 것으로 반사형 액정디스플레이장치에 사용되는 반사판을 은층으로 형성하여 편광판의 반사율을 개선하였다.The present invention relates to a polarizing plate to improve the reflectance of the polarizing plate by forming a reflecting plate used in the reflective liquid crystal display device with a silver layer.
상기 본 고안은 편광판의 일측표면에 형성되는 반사판을 은층으로 형성함으로서 종래의 알루미늄층을 사용한 경우보다 반사특성이 개선되어 액정디스플레이장치의 화질을 개선할 수 있다.According to the present invention, the reflective plate formed on one surface of the polarizing plate is formed of a silver layer, thereby improving reflection characteristics compared to the case of using a conventional aluminum layer, thereby improving image quality of the liquid crystal display device.
Description
제1도는 종래의 기술에 따른 편광판 구조를 나타낸 단면도.1 is a cross-sectional view showing a polarizing plate structure according to the prior art.
제2도는 본 고안에 따른 편광판 구조를 나타낸 단면도.2 is a cross-sectional view showing a polarizing plate structure according to the present invention.
제3도는 본 고안에 따른 은층과 종래의 알루미늄층의 반사율을 나타낸 그래프.3 is a graph showing the reflectance of the silver layer and the conventional aluminum layer according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 편광판 20 : 접착제10: polarizer 20: adhesive
30 : 은층 40 : 보호막30: silver layer 40: protective film
본 고안은 액정디스플레이장치에 사용되는 편광판에 관한 것으로, 특히 반사율을 개선한 편광판에 관한 것이다.The present invention relates to a polarizing plate used in a liquid crystal display device, and more particularly to a polarizing plate with improved reflectance.
일반적으로 편광판은 상,하부 액정패널의 외측표면에 형성되어 입사광의 경로를 변화시키는 역할을 한다.In general, polarizers are formed on outer surfaces of upper and lower liquid crystal panels to change a path of incident light.
예컨대 편광판은 상,하부 액정패널의 외측표면에 부착되어 광원으로부터 액정패널사이에 존재하는 액정을 통과한 빛이 외부로 통과하거나 차단되어 액정화면의 상태를 백탁 혹은 검게 보이도록하여 액정화면이 디스플레이되도록한다.For example, the polarizer is attached to the outer surface of the upper and lower liquid crystal panels so that the light passing through the liquid crystal between the light source and the liquid crystal panel passes outside or is blocked, so that the state of the liquid crystal screen appears cloudy or black so that the liquid crystal screen is displayed. do.
액정디스플레이장치에는 입사광을 투과시켜 디스플레이하는 방식과 반사시켜 표시하는 방식이 있다.The liquid crystal display device has a method of transmitting and displaying incident light and a method of reflecting and displaying the incident light.
반사형으로서 TN-LCD를 예를 들면, 하측패널의 편광외측에 반사판을 형성하고 상,하 액정패널의 외측에 형성되는 편광판을 각기 빛의 투과방향이 서로에 대해 90°의 각도를 갖도록 형성한다.As a reflective type, for example, a TN-LCD, for example, forms a reflecting plate outside the polarization of the lower panel, and forms a polarizing plate formed on the outside of the upper and lower liquid crystal panels so that the transmission direction of light has an angle of 90 ° with respect to each other. .
TN 액정은 90°의 꼬임각을 가지므로 일측으로부터 액정을 통과하는 빛이 90° 회전하여 타측의 편광판의 편광각도와 일치하므로 빛이 타측 편광판을 투과하여 액정이 백탁으로 보여 액정화면에 아무런 표시도 나타나지 않게 된다.Since the TN liquid crystal has a twist angle of 90 °, the light passing through the liquid crystal from one side rotates by 90 ° to match the polarization angle of the polarizing plate on the other side. Therefore, the light passes through the other polarizing plate and the liquid crystal appears cloudy. It will not appear.
이에 반해 TN-LCD의 전극에 전압을 인가하였을 경우, 액정패널 사이의 액정은 전계의 영향에 따라 액정패널의 평면을 따라 수직방향으로 일어서므로 일측으로부터 입사된 빛은 회전하지 않고 액정층을 그대로 통과하여 타측의 편광판에 부딪히게 되므로 일측으로부터 입사된 광은 편광판을 통과하지 못하고 타측편광판에서 반사하게 되어 액정층의 흑생으로 나타나 액정화면에 형상이 디스플레이되게 된다.On the other hand, when voltage is applied to the electrodes of the TN-LCD, the liquid crystal between the liquid crystal panels rises vertically along the plane of the liquid crystal panel under the influence of the electric field, so light incident from one side does not rotate and passes through the liquid crystal layer as it is. Therefore, since the light is hit by the polarizing plate on the other side, the light incident from one side does not pass through the polarizing plate and is reflected by the other polarizing plate, resulting in black color of the liquid crystal layer so that the shape is displayed on the LCD screen.
상술한 경우와 같이 전압이 인가된 상태에서 입사광이 타측편광판에서 반사될 경우 액정디스플레이장치의 종류가 STN-LCD이고 전극패턴에 칼라필터가 형성되어 있을때에는 칼라영상을 표현하는 것이 가능하다.As described above, when incident light is reflected from the other polarizing plate while voltage is applied, it is possible to express a color image when the type of the liquid crystal display device is STN-LCD and the color filter is formed on the electrode pattern.
투과형의 경우로는 반사판을 형성하지 않고 상술한 바와 같이 동일하게 편광판을 부착하고 하부패널의 밑에 백라이트(Back Light)를 설치하여 백 라이트의 광을 이용하여 디스플레이시키는 방법으로 액정패널의 전극에 전압을 인가하지 않은 경우에는 액정이 꼬여 있는 상태이므로 일측 편광판을 통과한 빛이 타측으로 그대로 통과하게 되고 전압을 인가한 상태에서는 타측 편광판을 투과하지 못하게 되어 액정화면에 형상을 나타내게 되는 원리를 이용한 것으로 두방식의 차이점은 백 라이트의 사용 및 반사판의 사용여부에 달려 있다.In the case of the transmissive type, a polarizing plate is attached in the same manner as described above without a reflecting plate, and a backlight is installed under the lower panel to display the light using the light of the backlight. If it is not applied, the liquid crystal is twisted, so the light passing through one polarizer passes to the other side as it is, and when the voltage is applied, it does not penetrate the other polarizer. The difference depends on the use of the backlight and the use of reflectors.
따라서, 반사형 액정디스플레이의 경우보다 선명한 디스플레이를 얻기 위해서는 반사판의 반사율의 크기가 액정디스플레이의 선명도에 큰 영향을 미치게 된다.Therefore, in order to obtain a clearer display than in the case of the reflective liquid crystal display, the size of the reflectance of the reflector has a great influence on the sharpness of the liquid crystal display.
제1도는 종래의 기술에 따른 편광판의 단면구조를 나타낸 단면도이다.1 is a cross-sectional view showing a cross-sectional structure of a polarizing plate according to the prior art.
제1도를 참조하면, 편광판(1)은 일측 표면에 보호막(4)이 형성되어 있으며, 타측면에는 접착제(2)에 의해 반사판으로서 알루미늄층(3)이 형성된 구조를 가지며 액정패널 제조공정완료후 보호막(4)을 제거한 상태에서 액정패널에 부착된다.Referring to FIG. 1, the polarizing plate 1 has a protective film 4 formed on one surface thereof, and an aluminum layer 3 formed on the other side of the polarizing plate as a reflecting plate by an adhesive 2. Then, the protective film 4 is removed and attached to the liquid crystal panel.
이러한 종래의 기술에서 반사판으로서 편광판(1)의 일측표면에 알루미늄층을 형성하여 사용하여 왔다. 그러나 알루미늄막은 반사율이 낮아 오늘날의 액정화면의 화질개선 추세에 부응하지 못하므로 더욱더 반사특성을 개선시킬 필요성이 대두되고 있다.In this conventional technique, an aluminum layer has been formed on one surface of the polarizing plate 1 as a reflecting plate. However, the aluminum film has a low reflectance, which does not meet the trend of improving the image quality of the LCD screen.
따라서, 본 고안의 목적은 반사특성이 개선된 편광판을 제공하는데 있다.Accordingly, an object of the present invention is to provide a polarizing plate with improved reflection characteristics.
상기의 목적을 달성하기 위한 본 고안은 편광판의 일측표면에 반사판으로서 은층이 형성됨을 특징으로 한다.The present invention for achieving the above object is characterized in that the silver layer is formed as a reflecting plate on one surface of the polarizing plate.
이하, 본 고안의 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
제2도는 본 고안에 따른 편광판의 단면도를 나타낸 것이다.Figure 2 shows a cross-sectional view of the polarizing plate according to the present invention.
제2도를 참조하여, 편광판(10)의 일측은 액정패널의 유리기판에 부착하기 위한 접착제가 형성되어 있으면, 이 접착제의 표면에는 편광판을 보호하기 위한 보호막(40)이 형성되어 있고 편광판(10)의 타측 표면에 접착제(20)가 형성되어 있으며, 이 접착제 위에 종래기술의 알루미늄층 보다 반사율이 높은 물질층, 바람직하게는 반사판으로서 은층(30)이 형성되어 있는 구조로 되어 있다.Referring to FIG. 2, when one side of the polarizing plate 10 is formed with an adhesive for attaching to a glass substrate of the liquid crystal panel, a protective film 40 for protecting the polarizing plate is formed on the surface of the adhesive and the polarizing plate 10 is formed. An adhesive 20 is formed on the other side surface of the substrate), and a material layer having a higher reflectance than the aluminum layer of the prior art is formed on the adhesive, and preferably, the silver layer 30 is formed as a reflecting plate.
제3도는 반사판으로서 형성되는 알루미늄층의 반사율(A)과 은층의 반사율(B)을 나타낸 것으로, 종래기술의 알루미늄층에 비해 은층의 반사특성이 뛰어남을 알 수 있다.3 shows the reflectance (A) of the aluminum layer and reflectance (B) of the silver layer formed as the reflecting plate, and it can be seen that the reflectivity of the silver layer is superior to that of the aluminum layer of the prior art.
따라서, 상술한 본 고안은 편광판의 일측에 반사판으로서 은층을 형성하므로서 종래의 편광판 경우보다 반사특성이 개선되어 액정디스플레이장치의 화질을 개선할 수 있다.Therefore, the present invention described above forms a silver layer as a reflecting plate on one side of the polarizing plate, thereby improving reflection characteristics as compared to the conventional polarizing plate, thereby improving the image quality of the liquid crystal display device.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940032310U KR0133158Y1 (en) | 1994-11-30 | 1994-11-30 | Polarizing plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019940032310U KR0133158Y1 (en) | 1994-11-30 | 1994-11-30 | Polarizing plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR960018504U KR960018504U (en) | 1996-06-19 |
| KR0133158Y1 true KR0133158Y1 (en) | 1999-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR2019940032310U KR0133158Y1 (en) | 1994-11-30 | 1994-11-30 | Polarizing plate |
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| Country | Link |
|---|---|
| KR (1) | KR0133158Y1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3591699B2 (en) * | 1997-10-09 | 2004-11-24 | 日東電工株式会社 | Polarizing element, optical element, illumination device, and liquid crystal display device |
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1994
- 1994-11-30 KR KR2019940032310U patent/KR0133158Y1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR960018504U (en) | 1996-06-19 |
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