KR20010077362A - Portable display device - Google Patents

Portable display device Download PDF

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Publication number
KR20010077362A
KR20010077362A KR1020000005110A KR20000005110A KR20010077362A KR 20010077362 A KR20010077362 A KR 20010077362A KR 1020000005110 A KR1020000005110 A KR 1020000005110A KR 20000005110 A KR20000005110 A KR 20000005110A KR 20010077362 A KR20010077362 A KR 20010077362A
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KR
South Korea
Prior art keywords
liquid crystal
display device
crystal display
polarizing plate
portable
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KR1020000005110A
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Korean (ko)
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KR100696453B1 (en
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탁광용
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김순택
삼성에스디아이 주식회사
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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
    • 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
    • G02F1/1341—Filling or closing of cells
    • 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
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133331—Cover glasses

Abstract

PURPOSE: A portable displaying apparatus is to remove a protecting plate disposed to protect an LCD(liquid crystal display), and coat a passivation layer on a front polarizing plate of the LCD, thereby reducing a thickness of the LCD and improving impact-resistance. CONSTITUTION: An upper substrate(4) and a lower substrate(6) are disposed to be opposite each other while interposing a liquid crystal injecting portion(2) therebetween. A transparent electrode is patterned on each opposite surface of the upper and lower substrates. A sealant(8) is printed on both side-ends of the substrates. A polarizing plate(9,10) is attached to an outside portion of each substrate to give a direction to incident light. The polarizing plate determines a twist angle of liquid crystal when applying a voltage to the liquid crystal. A passivation layer(20) is coated on an entire face of the polarizing plate. The passivation layer is formed to be transparent so that the light is incident to the polarizing plate without any interference of the light.

Description

휴대용 표시 장치 {Portable display device}Portable display device

본 발명은 휴대용 표시 장치의 액정표시소자에 관한 것으로, 보다 상세하게는 휴대용 표시장치의 액정표시부를 구성하는 부품 중 전면 편광판을 제거한 휴대용 표시장치의 액정표시소자에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device of a portable display device, and more particularly, to a liquid crystal display device of a portable display device from which a front polarizer is removed among components constituting the liquid crystal display unit of the portable display device.

휴대용 표시 장치는 액정 표시장치를 구비하여 휴대용 배터리를 전원으로 사용한 수단으로 휴대용 전화기, 노트 컴퓨터 및 PDA등 각종 첨단 기기의 정보 표시부의 총칭이다.The portable display device is a generic term for information display units of various advanced devices such as portable telephones, notebook computers, and PDAs.

휴대용 표시장치는 주로 평판 디스플레이가 사용되는 데 지금까지 알려진 평판 디스플레이장치는 LCD(liquid crystal display), TFT(thin film transistor)-LCD, FED(Field emission display), PDP(plasma display panel) 및 EL(electro luminescent) 디스플레이 등이 있다.Portable displays are mainly used for flat panel displays. The flat panel displays known to date are liquid crystal displays (LCDs), thin film transistor (TFT) -LCDs, field emission displays (FEDs), plasma display panels (ELPs) and EL ( electro luminescent displays.

평판 디스플레이장치들은 경박 단소 및 평면화에 따라 브라운관을 대체해 나가는 추세에 있으며, 특히 전산 시스템의 단말기용 모니터나 벽걸이용 디스플레이장치 및 노트 PC나 PDA, 와 같은 휴대용 기기에 주로 채용된다.Flat panel display devices tend to replace CRTs due to their thin and small size and flattening. Especially, flat panel display devices are mainly employed in portable terminal devices such as computer monitors or wall-mounted display devices and notebook PCs and PDAs.

현재 이러한 평판 디스플레이장치들이 가장 많이 적용되는 제품은 휴대용 전화기라고 할 수 있다. 휴대용 전화기는 일반 전화 정보 뿐만 아니라 인터넷을 비롯하여 나아가 화상통화를 실현하는 목적이 주효하여 크기가 작으면서도 기능성과 안전성이 뛰어난 평판 디스플레이가 선호되고 있는 실정이다.At present, the most widely applied such flat panel display devices are portable phones. The portable telephone is not only for general phone information but also for the purpose of realizing a video call as well as the Internet, and a small size and a flat panel display excellent in functionality and safety are preferred.

통상의 휴대용 전화기에는 액정 표시소자를 사용하는 액정표시부가 구비되는 데, 상기 액정표시소자는 외부로부터 인가되는 전압에 의해 액정의 꼬임각이 변화되는 유전이방성을 이용하여, 백라이트 혹은 외부로부터 조사된 광(光)을 선택적으로 투과시키거나 반대로 투과되지 않게 함으로써 문자나 숫자 및 화상을 표시한다.Conventional portable telephones are provided with a liquid crystal display using a liquid crystal display device. The liquid crystal display device uses a dielectric anisotropy in which the twist angle of the liquid crystal is changed by a voltage applied from the outside. Letters, numbers, and images are displayed by selectively transmitting the light or not transmitting the light.

이러한 액정표시소자가 적용된 액정표시부는 글래스 또는 플라스틱으로 이루어진 기판에 투명전극, 절연층 및 배향층을 형성하고, 액정 물질을 외기로부터 차단하여 봉입할 목적으로 실란트를 이용하여 소정의 공간을 만들며 동시에 상·하로 대향 배치된 2매의 기판을 상호 접착하여서 셀을 구성하고, 주입구를 통해 액정 물질을 주입한 후 엔드 실제를 이용하여 밀봉한 구성으로 이루어진다.The liquid crystal display, to which the liquid crystal display device is applied, forms a transparent electrode, an insulating layer, and an alignment layer on a substrate made of glass or plastic, and creates a predetermined space by using a sealant to seal and seal the liquid crystal material from outside air. A cell is formed by adhering two substrates arranged opposite to each other, injecting a liquid crystal material through an injection hole, and then sealing using an end seal.

상기 2매의 기판 바깥면에는 액정의 방향성을 결정해 주는 편광판이 부착되고 이와 같이 구성된 액정표시소자가 휴대용 전화기에 장착될 때는 액정표시소자를 보호하기 위하여 보호판을 전면 편광판 위에 덮게 된다. 상기 보호판은 투명한 플라스틱 또는 글래스로 형성하여 충격에 파손될 염려가 없는 재료를 선택하게 된다.The outer surface of the two substrates is attached with a polarizing plate for determining the orientation of the liquid crystal, and when the liquid crystal display device configured as described above is mounted on the portable telephone, the protective plate is covered on the front polarizer to protect the liquid crystal display device. The protective plate is formed of transparent plastic or glass to select a material that is not susceptible to damage from impact.

상술한 종래 휴대용 전화기에 장착되는 액정표시부의 단면을 도 2에 개략적으로 도시한다.FIG. 2 is a cross-sectional view schematically showing the liquid crystal display unit mounted in the above-mentioned conventional portable telephone.

도면에서 보면, 중앙의 액정 주입부(2)를 사이에 두고 글래스 또는 플라스틱으로 이루어진 기판(4)(6)이 대향하고 있으며 도시 생략되어 있으나 상기 기판의 대향면에는 투명전극, 절연층, 배향막이 형성되어 있다. 기판(4)(6)의 양측 단부에는 에폭시 계열의 실란트(8)가 프린트되어 액정 유출을 방지하면서 양 기판(4)(6)을 접착시켜 준다. 기판(4)(6)의 외면에는 각각 편광판(9)(10)이 부착되고 화면을 표시하는 전면 편광판(9) 위에는 외부 충격력에 대응하여 액정표시소자를 보호하기 위한 보호판(12)이 부착된다.In the drawing, the substrate 4 and 6 made of glass or plastic face each other with the liquid crystal injection unit 2 interposed therebetween. Although not shown, the transparent surface, the insulating layer, and the alignment layer are formed on the opposite surface of the substrate. Formed. Epoxy-based sealants 8 are printed on both ends of the substrates 4 and 6 to bond the two substrates 4 and 6 to prevent liquid crystal leakage. Polarizing plates 9 and 10 are attached to the outer surfaces of the substrates 4 and 6, respectively, and protective plates 12 are attached to the front polarizing plates 9 for displaying the screen in response to external impact forces. .

상기 보호판(12)은 글래스 또는 플라스틱의 재질로 형성되어 상당한 두께를 차지한다.The protective plate 12 is made of a glass or plastic material to occupy a considerable thickness.

그러나 현재 휴대용 표시장치는 초경량, 초슬림화하는 경향이며 그에 대한 연구개발이 진행중이다. 이와 같은 관점에서 보면, 액정표시소자를 보호하는 보호판은 휴대용 표시장치에 상당한 두께를 할애하게 되어 경박단소화 경향으로 진행중인 휴대용 표시장치에 장애가 되므로 이에 대한 개선의 필요성이 있다고 할 수 있다.However, the portable display device is a trend toward ultra-lightweight and ultra-slim, and research and development are in progress. From this point of view, the protective plate for protecting the liquid crystal display device has a considerable thickness for the portable display device, which is an obstacle to the ongoing portable display device due to the light and short trend, there is a need for improvement.

상술한 종래 기술을 개선할 필요성에 의해 안출된 본 발명은 액정 표시 장치를 보호하기 위하여 부착되는 보호판을 제거하고 전면 편광판 위에 보호 필름을 도포하여 경박단소한 휴대용 표시장치의 액정표시소자를 제공함을 그 목적으로 한다.SUMMARY OF THE INVENTION The present invention devised by the necessity to improve the above-described prior art provides a liquid crystal display device of a light and simple portable display device by removing a protective plate attached to protect a liquid crystal display device and applying a protective film on the front polarizer. The purpose.

이를 위하여 본 발명의 휴대용 표시장치의 액정표시소자는 액정주입공간을 사이에 두고 양면에 글래스 기판과 전면, 후면 편광판이 차례로 적치되어 구성된 액정표시소자가 부착된 휴대용 표시 장치에 있어서, 상기 전면 편광판 위에 보호 필름을 도포한 구성으로 이루어진다.To this end, the liquid crystal display device of the portable display device according to the present invention is a portable display device having a liquid crystal display device having a glass substrate and a front and a rear polarizer sequentially stacked on both surfaces with a liquid crystal injection space therebetween, and above the front polarizer. It consists of the structure which apply | coated the protective film.

상기 보호필름은 에폭시를 필름 형태로 형성시켜 도포한다.The protective film is applied by forming an epoxy in the form of a film.

상술한 구조의 휴대용 표시장치의 액정표시소자는 종래 휴대용 표시 장치에 사용되던 보호판을 제거함으로써 두께를 감소시키고, 전면 편광판 위에 에폭시 필름을 도포하여 액정표시소자의 내충격성을 향상시키므로 휴대용 표시장치를 슬림화하면서 액정표시소자를 보호하는 효과가 있다.The liquid crystal display device of the portable display device having the above-described structure reduces the thickness by removing the protective plate used in the conventional portable display device, and improves the impact resistance of the liquid crystal display device by applying an epoxy film on the front polarizer to slim down the portable display device. While protecting the liquid crystal display device.

도 1은 본 발명에 의한 휴대용 표시 장치의 액정표시부 단면을 도시한 단면도.1 is a cross-sectional view showing a cross section of a liquid crystal display of a portable display device according to the present invention.

도 2는 종래 휴대용 표시장치의 액정표시부 단면을 도시한 도면.2 is a cross-sectional view of a liquid crystal display of a conventional portable display device.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

2: 액정주입부 4,6: 기판2: liquid crystal injection unit 4, 6: substrate

8: 실란트 9,10: 편광판8: sealant 9,10: polarizer

12: 보호판 20: 보호필름12: protective plate 20: protective film

본 발명의 구성에 대하여 첨부한 도면에 의거하여 보다 상세하게 설명한다. 참고로 본 발명의 설명에 앞서 종래 도면과 일치하는 부분에 대해서는 종래 도면부호를 그대로 인용하기로 한다.EMBODIMENT OF THE INVENTION The structure of this invention is demonstrated in detail based on attached drawing. For reference, prior to the description of the present invention will be referred to the same reference numerals as for the parts corresponding to the conventional drawings.

도 1은 본 발명에 의한 휴대용 표시장치의 액정표시소자를 단면으로 도시한 도면이다.1 is a cross-sectional view of a liquid crystal display device of a portable display device according to the present invention.

도면에서 보면, 본 발명의 휴대용 표시장치에서 액정표시소자(1)는 중앙에 액정이 함침된 액정 주입부(2)를 사이에 두고 상측과 하측에 기판(4)(6)이 형성되어 있다. 상기 기판(4)(6)의 대향면에는 도시 생략되어 있으나 투명 전극이 패터닝되어 있으며, 절연층과 배향막이 형성되어 있고 기판(4)(6)의 양측 단부에는 실란트(8)가 프린트되어 밀봉된다.In the drawings, in the portable display device of the present invention, the liquid crystal display device 1 has substrates 4 and 6 formed on the upper side and the lower side with the liquid crystal injecting portion 2 impregnated with liquid crystal in the center thereof. Although not shown, the transparent electrodes are patterned on the opposite surfaces of the substrates 4 and 6, and an insulating layer and an alignment layer are formed, and sealants 8 are printed and sealed at both ends of the substrates 4 and 6. do.

상기 기판(4)(6)의 바깥면에는 편광판(9)(10)이 부착되는 데 상기 편광판은 입사되는 광에 방향성을 부여하는 것으로 액정에 전압이 인가될 때 액정의 트위스트 각을 결정해 준다. 상기 편광판(9)(10) 중 전면 편광판(9)에 본 발명의 주요 부분인 보호 필름(20)이 도포 형성된다.Polarizers 9 and 10 are attached to the outer surface of the substrates 4 and 6. The polarizers provide directionality to incident light and determine twist angles of the liquid crystals when voltage is applied to the liquid crystals. . The protective film 20 which is the main part of this invention is apply | coated and formed in the front polarizing plate 9 among the said polarizing plates 9 and 10.

상기 보호 필름(20)은 종래 액정표시소자를 보호하기 위하여 도 2에 도시된플라스틱이나 글래스 재질의 종래 보호판(12)을 대신하는 것으로, 전면 편광판(9)이 그대로 외부에 노출이 되면 외부 충격력에 액정표시소자가 견디지 못하고 편광판이 깨지거나 글래스 기판이 깨져 액정이 유출될 가능성이 높기 때문에 소정의 보호막을 형성하여 액정표시소자를 보호하는 것이다.The protective film 20 replaces the conventional protective plate 12 of plastic or glass material shown in FIG. 2 to protect the conventional liquid crystal display device. When the front polarizing plate 9 is exposed to the outside, the protective film 20 is exposed to external impact force. Since the liquid crystal display device does not endure, the polarizing plate is broken, or the glass substrate is broken, and the liquid crystal is likely to leak out, a predetermined protective film is formed to protect the liquid crystal display device.

상기 보호 필름(20)은 입사광이 방해받지 않고 편광판(9)을 통해 입사될 수 있도록 기본적으로 투명하여야 하며 그 재질로는 에폭시를 필름형식으로 얇게 도포하여 구성한다.The protective film 20 should be basically transparent so that incident light can be incident through the polarizing plate 9 without being disturbed, and the material is composed of a thin film of epoxy.

상술한 구조로 휴대용 표시장치를 제작하면 종래 액정표시소자를 보호하던 보호 윈도우를 제거할 수 있으므로 휴대용 표시장치를 슬림하게 제작할 수 있고 편광판을 그대로 노출시키지 않고 에폭시로 보호층을 형성함으로 액정표시소자를 효과적으로 보호할 수 있게 된다.When the portable display device is manufactured with the above-described structure, the protective window that protects the conventional liquid crystal display device can be removed, thereby making the portable display device slim, and forming the protective layer with epoxy without exposing the polarizing plate. It can effectively protect.

본 발명은 다음과 같은 효과를 나타낸다.The present invention has the following effects.

휴대용 표시장치의 액정표시소자 위에 보호 윈도우를 덮던 종래 구조를 개선하여 액정표시소자의 전면 편광판 위에 에폭시 보호 필름을 도포하여, 액정표시소자를 외부 충격에서 보호함은 물론 두께를 감소시키는 효과를 가진다.The conventional structure of covering the protective window on the liquid crystal display of the portable display device is improved to apply an epoxy protective film on the front polarizer of the liquid crystal display, thereby protecting the liquid crystal display from external impact and reducing the thickness.

Claims (2)

액정이 주입된 액정셀과, 액정셀의 외부에 부착되는 편광판을 부착한 액정표시소자가 장착된 휴대용 표시장치의 액정표시소자에 있어서,In the liquid crystal display device of the portable display device equipped with a liquid crystal cell in which a liquid crystal is injected, and a liquid crystal display element with a polarizing plate attached to the outside of the liquid crystal cell, 상기 전면 편광판위에 액정표시소자를 외부 충격에서 보호하는 보호필름을 도포한 것을 특징으로 하는 휴대용 표시장치의 액정표시소자.A liquid crystal display device of a portable display device, characterized in that a protective film for protecting the liquid crystal display device from external impact on the front polarizing plate. 제 1 항에 있어서, 상기 보호 필름은 에폭시 수지를 채용한 것을 특징으로 하는 휴대용 표시장치의 액정표시소자.The liquid crystal display device of claim 1, wherein the protective film employs an epoxy resin.
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Cited By (6)

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KR100442365B1 (en) * 2001-11-13 2004-07-30 엘지전자 주식회사 Liquid crystal display of mobile phone
KR20050056606A (en) * 2003-12-10 2005-06-16 주식회사 팬택앤큐리텔 Lcd module for mobile communication terminal
KR20050093046A (en) * 2004-03-18 2005-09-23 한종석 Lcd protection film
KR100722096B1 (en) * 2005-11-23 2007-05-25 삼성에스디아이 주식회사 Portable display device
KR100817991B1 (en) * 2006-03-24 2008-03-31 가부시키가이샤 히타치 디스프레이즈 Display device
KR100929238B1 (en) * 2008-06-17 2009-12-01 김상섭 LCD solar tile

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JPH0756149A (en) * 1993-08-20 1995-03-03 Rohm Co Ltd Liquid crystal display device
KR960003343U (en) * 1994-06-03 1996-01-22 Liquid crystal display device for preventing surface damage of cell phone
WO1996019345A1 (en) * 1994-12-22 1996-06-27 Dai Nippon Printing Co., Ltd. Composite film
JPH1039281A (en) * 1996-07-19 1998-02-13 Ricoh Co Ltd Liquid crystal display element
KR100587441B1 (en) * 1997-06-25 2006-09-20 미쓰비시 가가꾸 폴리에스테르 필름 가부시키가이샤 LCD panel surface protection film
JP3996675B2 (en) * 1997-08-07 2007-10-24 藤森工業株式会社 Laminate sheet for polarizing plate integrated inner touch panel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100442365B1 (en) * 2001-11-13 2004-07-30 엘지전자 주식회사 Liquid crystal display of mobile phone
KR20050056606A (en) * 2003-12-10 2005-06-16 주식회사 팬택앤큐리텔 Lcd module for mobile communication terminal
KR20050093046A (en) * 2004-03-18 2005-09-23 한종석 Lcd protection film
KR100722096B1 (en) * 2005-11-23 2007-05-25 삼성에스디아이 주식회사 Portable display device
KR100817991B1 (en) * 2006-03-24 2008-03-31 가부시키가이샤 히타치 디스프레이즈 Display device
KR100929238B1 (en) * 2008-06-17 2009-12-01 김상섭 LCD solar tile

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