KR20020033948A - Backlight for liquid crystal display - Google Patents
Backlight for liquid crystal display Download PDFInfo
- Publication number
- KR20020033948A KR20020033948A KR1020000064210A KR20000064210A KR20020033948A KR 20020033948 A KR20020033948 A KR 20020033948A KR 1020000064210 A KR1020000064210 A KR 1020000064210A KR 20000064210 A KR20000064210 A KR 20000064210A KR 20020033948 A KR20020033948 A KR 20020033948A
- Authority
- KR
- South Korea
- Prior art keywords
- liquid crystal
- backlight
- crystal display
- layer
- present
- 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
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 28
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000010409 thin film Substances 0.000 claims abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims abstract description 5
- 125000006850 spacer group Chemical group 0.000 claims abstract description 4
- 239000002253 acid Substances 0.000 claims 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000002834 transmittance Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000002048 multi walled nanotube Substances 0.000 description 1
- 239000002120 nanofilm Substances 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002109 single walled nanotube Substances 0.000 description 1
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
- G02F1/1336—Illuminating devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/20—Carbon compounds, e.g. carbon nanotubes or fullerenes
- H10K85/221—Carbon nanotubes
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
본 발명은 퍼스널 컴퓨터의 액정 디스플레이 또는 액정 텔레비젼 장치등에 사용되는 액정표시장치용 백라이트에 관한 것으로서, 기존의 백라이트에 비해 제조공정의 단순화와 제조비용의 절감을 도모하고 빛의 광투과율 향상 및 고휘도를 얻는 것을 발명의 목적으로 하여 안출된 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight for a liquid crystal display device used in a liquid crystal display or a liquid crystal television device of a personal computer. The present invention aims to simplify the manufacturing process and reduce manufacturing cost, and to improve light transmittance and high brightness of a light source, compared to a conventional backlight. It is devised for the purpose of this invention.
본 발명은 상기와 같은 목적을 달성하기 위해, 하부에 ITO층과 형광체층이 차례로 형성된 상부기판과, 상부에 금속박막층과 켄쥬게이트화 이중결합으로 연결되어 있는 탄소나노튜브층이 차례로 형성된 하부기판이 스페이서를 사이에 두고 접합밀봉되어 있고, 상기 하부기관에는 방전개스를 주입한 후 밀봉되는 진공배기 유리관이 배설되어 있는 구조로 된 액정표시장치용 백라이트를 개시한다.In order to achieve the above object, the present invention provides an upper substrate on which an ITO layer and a phosphor layer are sequentially formed, and a lower substrate on which a carbon nanotube layer, which is connected by a metal thin film layer and a quenched double bond, is sequentially formed. Disclosed is a backlight for a liquid crystal display device having a structure in which a spacer is sandwiched and sealed and a vacuum exhaust glass tube that is sealed after the discharge gas is injected into the lower engine is disposed.
Description
본 발명은 퍼스널 컴퓨터의 액정 디스플레이 또는 액정 텔레비젼 장치 등에 사용되는 액정표시장치용 백라이트 제조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of backlights for liquid crystal display devices used in liquid crystal displays or liquid crystal television devices of personal computers.
일반적으로 액정표시소자는 무게가 가볍고 소비전력도 적다는 장점을 가지고 있어서, 컴퓨터 또는 텔레비젼 분야의 디스플레이장치에 널리 보급되고 있다. 그러나, 액정표시소자는 그 자체가 발광하여 화상을 형성하지 못하고 후방에서 균일한 빛을 받아야만 화상을 형성하므로 후방에서 빛을 발산하는 요소가 필요한데, 백라이트는 이러한 역할을 수행하는 액정 디스플레이 장치의 중요한 구성부이다.In general, liquid crystal display devices have the advantages of low weight and low power consumption, and thus are widely used in display devices in the computer or television fields. However, since the liquid crystal display itself does not form an image by emitting light, but needs to receive uniform light from the rear to form an image, an element that emits light from the rear is required, and the backlight is an important component of the liquid crystal display device that performs this role. It is wealth.
도 3은 일본국 특허공개공보 평 8-313710호, 일본국 특허공개공보 평 9-251807호에 도시된 종래의 에지 라이트 방식의 백라이트 구조를 보여주는 단면도로서, 발광체는 냉음극 형광관(16)으로 액정표시장치(11) 끝면 하단에 배치되고, 여기서 나온 빛은 반사판(15)에 의하여 액정판 하단으로 전달되며, 투과상 재료로 이루어지는 도광판(14)의 상면에 조명면의 빛을 액정판 전체에 골고루 분산하여 보내는 확산판(13)이 있으며, 확산판(13) 상부에 위치한 프리즘판(12)에 의하여 빛을 어느 정도 집합하고 액정판의 정면 휘도를 향상키도록 하는 구성으로 되어 있다.3 is a cross-sectional view showing a conventional edge light backlight structure shown in Japanese Patent Application Laid-open No. Hei 8-313710 and Japanese Patent Application Laid-open No. Hei 9-251807, wherein the light emitter is a cold cathode fluorescent tube 16; It is disposed at the lower end of the end surface of the liquid crystal display device 11, and the light emitted therefrom is transmitted to the lower end of the liquid crystal plate by the reflecting plate 15, and the light of the illumination surface on the upper surface of the light guide plate 14 made of a transmission phase material There is a diffuser plate 13 which is distributed evenly, and the prism plate 12 located above the diffuser plate 13 collects light to some extent and improves the front luminance of the liquid crystal plate.
그러나, 이상과 같이 구성된 종래의 백라이트는 일반적으로 구성이 복잡하여 생산비가 높아질 뿐만 아니라 광원이 측면에 있어서 빛의 반사와 투과에 의하여 소비 전력에 대한 효율이 현저하게 낮아지고 휘도의 균일성을 보장하기 어렵다는 문제점이 있었다.However, the conventional backlight structure as described above is generally complicated in composition, not only to increase the production cost but also to considerably lower the efficiency of power consumption due to the reflection and transmission of light at the side of the light source, and to ensure uniformity of luminance. There was a difficult problem.
본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위한 것으로써, 본 발명의 목적은 기존의 복잡한 백라이트 대신 평면상에 탄소나노튜브(Carbon nano tube)의 단분자막을 형성하고 이 단분자막을 통해 균일한 고휘도의 백라이트를 제조하는데 있다. 본 발명의 또다른 목적은 탄소나노튜브를 이용함으로써, 기존의 백라이트보다 단순한 구성으로 인하여 생산비와 소비전력을 감소시키는 제조 방법을 제공하는데 있다.The present invention is to solve the problems of the prior art as described above, the object of the present invention is to form a monomolecular film of carbon nanotubes (Carbon nanotube) on the plane instead of the conventional complex backlight and uniform high brightness through this monolayer To manufacture the backlight. Another object of the present invention is to provide a manufacturing method that reduces the production cost and power consumption due to the simpler configuration than the conventional backlight by using carbon nanotubes.
도 1은 본 발명의 실시 양태를 도시한 단면도.1 is a cross-sectional view showing an embodiment of the present invention.
도 2는 도 1이 하부기판의 금속박막층과 말단이 개질된 탄소나노튜브의 화학적 결합을 보여주는 단면도.Figure 2 is a cross-sectional view showing the chemical bonding of the carbon nanotube modified terminal and the metal thin film layer of the lower substrate.
도 3은 종래의 액정표시장치에 사용된 백라이트의 일례를 나타내는 단면도이다.3 is a cross-sectional view showing an example of a backlight used in a conventional liquid crystal display device.
〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>
1 : 상부 기판 2 : ITO층1: upper substrate 2: ITO layer
3 : 형광체층 4 : 탄소나노튜브층3: phosphor layer 4: carbon nanotube layer
5 : 스페이서 6 : 금속박막층5 spacer 6 metal thin film layer
7 : 하부 기관 8 : 진공배기 유리관7: lower body 8: vacuum exhaust glass tube
11 : 액정 표시 장치 12 : 프리즘판11: liquid crystal display device 12: prism plate
13 : 확산판 14 : 도광판13 diffuser 14 light guide plate
15 : 반사판 16 : 냉음극 형광판15: reflecting plate 16: cold cathode fluorescent plate
상기 목적을 달성하기 위하여, 본 발명의 액정표시장치는 측면에 위치했던 광원 대신에 평면상에 탄소나노튜브를 자기조립시키고 균일하게 배열한 후 빛을 발산하는 새로운 형태의 백라이트를 개시한다.In order to achieve the above object, the liquid crystal display of the present invention discloses a new type of backlight that emits light after self-assembling and uniformly arranging carbon nanotubes on a flat surface instead of a light source located on the side.
이하, 본 발명을 첨부된 도면을 의거해 상세히 설명한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 백라이트의 실시양태를 나타낸 단면도로서, 즉 본 발명은 하부에 ITO(Indium Tin Oxide)층(2)과 형광체가 도포되어 있는 형광체층(3)이 차례로 적층되어 있는 상부기판(1)과, 상부에 금박과 같은 금속박막층(6)과 탄소나노튜브 분자막이 형성된 탄소나노튜브층(4)이 차례로 적층되어 있는 하부기판(7)이 스페이서(spacer)(5)를 사이에 두고 접합밀봉되어 있으며, 상기 하부기판(7)에는방전개스를 주입한 후 가열 밀봉되는 진공배기 유리관(8)이 설치되어 있는 구조로 된 액정표시장치용 백라이트에 관한 것이다. 따라서, 이와 같이 구성된 백라이트는 상부기판과 하부기판에 배설된 전극에 전압을 인가하면 탄소나노튜브에서 방출된 전자가 형광체를 통과하면서 빛을 발산하게 되는 것이다.1 is a cross-sectional view showing an embodiment of a backlight according to the present invention, that is, the present invention is an upper substrate on which an indium tin oxide (ITO) layer 2 and a phosphor layer 3 on which phosphors are applied are sequentially stacked. (1) and a lower substrate 7 on which a metal thin film layer 6 such as gold foil and a carbon nanotube layer 4 on which a carbon nanotube molecular film is formed are sequentially stacked are interposed between spacers 5. It relates to a backlight for a liquid crystal display device having a structure in which a vacuum-exhaust glass tube 8 is heat-sealed after injecting discharge gas into the lower substrate 7. Therefore, in the backlight configured as described above, when voltage is applied to the electrodes disposed on the upper substrate and the lower substrate, electrons emitted from the carbon nanotubes pass through the phosphor and emit light.
본 발명에서 하부기판에 형성된 금속박막층(6)상에 탄소나노튜브층을 형성시 탄소나노튜브로는 티오산 유도체로 치환된 탄소나노튜브를 사용하는 것이 좋은데, 구체적으로 다음과 같은 방법을 사용할 수 있다.In the present invention, when forming the carbon nanotube layer on the metal thin film layer 6 formed on the lower substrate, it is preferable to use carbon nanotubes substituted with thioacid derivatives as the carbon nanotubes. Specifically, the following method may be used. have.
즉, 아크방전으로 합성된 탄소나노튜브를 황산과 질산의 혼합물속에서 산화시켜면서 초음파 진동을 시켜 짧은 탄소나노튜브를 얻는 공정을 통해 탄소나노튜브의 말단을 카르복실 그룹으로 치환하고 이렇게 치환된 탄소나노튜브를 SoCl2처리를 하여 클로로 아실화한 후, 클로로 아실화된 탄소나노튜브를 에탄올에 분산 시키고 KSH를 이용해 티오산(COSH)유도체로 치환된 탄소나노튜브를 얻으며, 이와 같이 얻어진 티올 유도체로 치환된 탄소나노튜브를 에탄올에 분산시킨 후 금(Au)과 같은 금속이나 금속산화물로 박막 처리된 금속박막층(6)이 형성된 하부기판(7)을 상기 용액에 담그었다가 꺼내면 자연스럽게 탄소나노튜브들이 자기조립(Self-asembly)하여 도 2와 같은 형상으로 단분자막인 탄소나노튜브층(4)이 형성된다. 여기서 금속박막과 탄소나노튜브는 전자 전달이 가능한 콘쥬게이트화된 이중 결합으로 연결되어 있으며, 이와 같은 화학결합은 일반적으로 결합이 용이하고 결합력도 강하다.That is, the carbon nanotubes synthesized by arc discharge are oxidized in a mixture of sulfuric acid and nitric acid, and ultrasonically vibrated to obtain short carbon nanotubes, thereby replacing the ends of the carbon nanotubes with carboxyl groups. After chloroacylation of the nanotubes by SoCl 2 treatment, chloroacylated carbon nanotubes were dispersed in ethanol, and carbon nanotubes substituted with thioacid derivatives using KSH were obtained. After dispersing the substituted carbon nanotubes in ethanol, the lower substrate 7 having the metal thin film layer 6 treated with a metal or metal oxide such as gold (Au) is immersed in the solution and taken out. Self-assembly to form a carbon nanotube layer 4 of a monomolecular film in the shape as shown in FIG. Here, the metal thin film and the carbon nanotubes are connected by conjugated double bonds capable of electron transfer, and such chemical bonds are generally easy to bond and have strong bonding strength.
이때 탄소나노튜브는 단층(single-wall)나노튜브 또는 다층(multi-wall)나노튜브가 모두 사용가능하며, 튜브의 길이는 대략 0.1∼10㎛, 지름이 대략 10∼200nm 범위에 있는 것이 바람직하다.In this case, carbon nanotubes may be used as single-wall nanotubes or multi-wall nanotubes, and the length of the tube is preferably about 0.1 to 10 μm and a diameter of about 10 to 200 nm. .
본 발명에 사용되는 상부기판(1) 또는 하부기판(7)은 일반적으로 유리기판이나 또는 플라스틱기판을 사용하며, 또 하부기판(7)에 형성되는 금속박막층(6)은 대개 금속 또는 금속산화물을 사용하여 형성되며 그 두께는 대략 0.1nm∼1㎛범위가 적당하다.The upper substrate 1 or the lower substrate 7 used in the present invention generally uses a glass substrate or a plastic substrate, and the metal thin film layer 6 formed on the lower substrate 7 usually has a metal or metal oxide. It is formed using the thickness of approximately 0.1nm ~ 1㎛ range is appropriate.
이와 같이 본 발명에 따라 제작된 백라이트와 성능을 비교하기 위해 탄소나노튜브와 금속박막 사이의 연결부위가 단일결합으로 된 카본나노튜브를 사용한 백라이트를 제작하여 그 성능을 비교하여 하기 표 1에 나타내었다.In order to compare the performance with the backlight manufactured according to the present invention, a backlight using carbon nanotubes in which the connection portion between the carbon nanotubes and the metal thin film is a single bond is compared and its performance is shown in Table 1 below. .
이상과 같이 구성된 액정표시장치용 백라이트는 탄소나노튜브를 평면상에 배치하여 균일한 빛을 직접 발산하므로, 기존의 백라이트에 사용되는 다수의 부품들(예를 들면 광원, 도광판, 광학산판, 프리즘판, 반사판)을 사용하지 않아 공정의 단순화와 제조 비용의 절감을 도모 할수 있으며, 또한 단순한 구성으로 인해 빛의 광 투과율 향상과 상대적으로 고휘도를 얻을 수 있다.Since the backlight for the liquid crystal display device configured as described above emits uniform light directly by arranging carbon nanotubes on a plane, a plurality of components (for example, a light source, a light guide plate, an optical diffuser, and a prism plate) used in a conventional backlight are provided. (Reflective plate) can be used to simplify the process and reduce the manufacturing cost. Also, due to the simple configuration, light transmittance of light can be improved and relatively high brightness can be obtained.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0064210A KR100474172B1 (en) | 2000-10-31 | 2000-10-31 | Backlight for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2000-0064210A KR100474172B1 (en) | 2000-10-31 | 2000-10-31 | Backlight for liquid crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20020033948A true KR20020033948A (en) | 2002-05-08 |
| KR100474172B1 KR100474172B1 (en) | 2005-03-07 |
Family
ID=19696319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR10-2000-0064210A Expired - Fee Related KR100474172B1 (en) | 2000-10-31 | 2000-10-31 | Backlight for liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100474172B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7288884B2 (en) | 2004-01-08 | 2007-10-30 | Samsung Sdi Co., Ltd. | Field emission backlight unit having emitters disposed on edges of electrodes |
| KR100842936B1 (en) * | 2002-04-15 | 2008-07-02 | 나노퍼시픽(주) | Manufacturing method of backlight for liquid crystal display device |
| US7855499B2 (en) | 2006-12-20 | 2010-12-21 | Samsung Sdi Co., Ltd. | Back light unit using an electron emission device and display including the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032571A1 (en) * | 1996-03-06 | 1997-09-12 | Hyperion Catalysis International, Inc. | Functionalized nanotubes |
| KR100365444B1 (en) * | 1996-09-18 | 2004-01-24 | 가부시끼가이샤 도시바 | Vacuum micro device and image display device using the same |
| US6630772B1 (en) * | 1998-09-21 | 2003-10-07 | Agere Systems Inc. | Device comprising carbon nanotube field emitter structure and process for forming device |
| JP3939452B2 (en) * | 1999-01-12 | 2007-07-04 | 喜萬 中山 | Electron emitting device and manufacturing method thereof |
| JP2000251783A (en) * | 1999-02-24 | 2000-09-14 | Futaba Corp | Field emission display element |
| KR100376198B1 (en) * | 1999-11-05 | 2003-03-15 | 일진나노텍 주식회사 | Field emission display device using vertically aligned carbon nanotube and manufacturing method thereof |
| KR100372307B1 (en) * | 2000-05-01 | 2003-02-17 | 주식회사 퀀텀테크인터내셔날 | Carbon nanotubes having thiol groups and method for preparing the same |
| KR100366705B1 (en) * | 2000-05-26 | 2003-01-09 | 삼성에스디아이 주식회사 | Method for fabricating a carbon nanotube-based emitter using an electrochemical polymerization |
-
2000
- 2000-10-31 KR KR10-2000-0064210A patent/KR100474172B1/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100842936B1 (en) * | 2002-04-15 | 2008-07-02 | 나노퍼시픽(주) | Manufacturing method of backlight for liquid crystal display device |
| US7288884B2 (en) | 2004-01-08 | 2007-10-30 | Samsung Sdi Co., Ltd. | Field emission backlight unit having emitters disposed on edges of electrodes |
| US7905756B2 (en) | 2004-01-08 | 2011-03-15 | Samsung Sdi Co., Ltd. | Method of manufacturing field emission backlight unit |
| US7855499B2 (en) | 2006-12-20 | 2010-12-21 | Samsung Sdi Co., Ltd. | Back light unit using an electron emission device and display including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100474172B1 (en) | 2005-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI470320B (en) | Planar light source device and liquid crystal display device having the same and methods of manufacturing the same | |
| CN100543904C (en) | Ballistic electron surface emitting device launcher and device using same | |
| CN100583349C (en) | Field-transmitting cathode, its production and planar light source | |
| KR100981996B1 (en) | Field Emission Backlight Device | |
| US6815877B2 (en) | Field emission display device with gradient distribution of electrical resistivity | |
| KR20060047377A (en) | Back light for liquid crystal display | |
| KR100474172B1 (en) | Backlight for liquid crystal display | |
| US20060076881A1 (en) | Display apparatus | |
| US7230373B2 (en) | Field emission type backlight device | |
| KR100474171B1 (en) | Backlight for liquid crystal display | |
| KR100475699B1 (en) | Producing method of the backlight for liquid crystal display | |
| US20070228930A1 (en) | Field emission backlight, display apparatus using the same and a method of manufacturing the same | |
| CN1266731C (en) | Field emission display device | |
| KR100842936B1 (en) | Manufacturing method of backlight for liquid crystal display device | |
| JP2008123995A (en) | Field emission device and manufacturing method thereof | |
| WO2023061225A1 (en) | Display panel and display device | |
| KR100842934B1 (en) | Backlight for LCD | |
| KR20050089639A (en) | Carbon nanotube field emission device | |
| CN101350275B (en) | Field emission element and electrode structure thereof | |
| TWI278249B (en) | Method for increasing the uniformity of a flat panel light source and the light source thereof | |
| CN100561660C (en) | A field emission light source and a backlight module using the light source | |
| CN1786782A (en) | Clip for flat fluorescent lamp, flat fluorescent lamp having the same, liquid crystal display device having the same and method of manufacturing the same | |
| KR101294842B1 (en) | Backlight for liquid crystal display using carbon nano tube | |
| KR20050044164A (en) | Field emission cathode having metal-coated junction part and preparing method thereof | |
| CN101153991A (en) | Liquid crystal display device and side light type backlight module thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 20001031 |
|
| PG1501 | Laying open of application | ||
| A201 | Request for examination | ||
| PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 20020716 Comment text: Request for Examination of Application Patent event code: PA02011R01I Patent event date: 20001031 Comment text: Patent Application |
|
| E902 | Notification of reason for refusal | ||
| PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20040625 Patent event code: PE09021S01D |
|
| E701 | Decision to grant or registration of patent right | ||
| PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20050217 |
|
| GRNT | Written decision to grant | ||
| PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20050222 Patent event code: PR07011E01D |
|
| PR1002 | Payment of registration fee |
Payment date: 20050223 End annual number: 3 Start annual number: 1 |
|
| PG1601 | Publication of registration | ||
| PR1001 | Payment of annual fee |
Payment date: 20080222 Start annual number: 4 End annual number: 4 |
|
| PR1001 | Payment of annual fee |
Payment date: 20090217 Start annual number: 5 End annual number: 5 |
|
| PR1001 | Payment of annual fee |
Payment date: 20100211 Start annual number: 6 End annual number: 6 |
|
| FPAY | Annual fee payment |
Payment date: 20110221 Year of fee payment: 7 |
|
| PR1001 | Payment of annual fee |
Payment date: 20110221 Start annual number: 7 End annual number: 7 |
|
| LAPS | Lapse due to unpaid annual fee | ||
| PC1903 | Unpaid annual fee |