KR20030020538A - Back light unit for liquid crystal display device - Google Patents
Back light unit for liquid crystal display device Download PDFInfo
- Publication number
- KR20030020538A KR20030020538A KR1020010053673A KR20010053673A KR20030020538A KR 20030020538 A KR20030020538 A KR 20030020538A KR 1020010053673 A KR1020010053673 A KR 1020010053673A KR 20010053673 A KR20010053673 A KR 20010053673A KR 20030020538 A KR20030020538 A KR 20030020538A
- Authority
- KR
- South Korea
- Prior art keywords
- light
- lamp
- color
- liquid crystal
- crystal display
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
-
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
Description
본 발명은 액정표시장치의 백라이트 유니트에 관한 것으로, 특히 다중 램프의 독립적 구동에 의하여 컬러를 조정할 수 있는 백라이트 유니트에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight unit of a liquid crystal display device, and more particularly, to a backlight unit capable of adjusting color by independent driving of multiple lamps.
액정표시장치(Liquid Crystal Display: 이하, LCD)는 박형화, 경량화, 저소비 전력, 구동회로와의 정합성등의 이유로 그 사용범위가 확대되어 가고 있다. 일반적으로 사용되고 있는 투광형 LCD는 자체발광을 하지 못하므로 백라이트가 필요하며, LCD의 성능은 그 자체 뿐만아니라 사용하는 백라이트 유니트의 성능에 의존하는 바가 크다.BACKGROUND OF THE INVENTION Liquid crystal displays (hereinafter referred to as LCDs) are being used for a wide range of reasons such as thinness, light weight, low power consumption, and compatibility with driving circuits. The commonly used transmissive LCD does not emit light by itself, so a backlight is required, and the performance of the LCD is largely dependent on the performance of the backlight unit.
도 1은 종래의 액정표시장치의 백라이트 유니트를 도시한 단면도이다.1 is a cross-sectional view illustrating a backlight unit of a conventional liquid crystal display device.
종래의 액정표시장치의 백라이트 유니트는, 도 1에 도시된 바와 같이, 광원(10)과, 상기 광원(10)을 둘러싸고 있는 램프 반사체(11)와, 인쇄 패턴(12)이 형성되어 있는 도광판(13)과, 상기 도광판(13)의 하면과 상면에 각각 형성된 반사판(14)및 확산판(15)과, 빛을 집광하여 출력하는 프리즘판(16)과, 보호막(17)등으로 구성된다. 이때, 상기 프리즘판(16)은 하부 프리즘판(16a) 및 상부 프리즘판(16b)으로 구성되어 있다.As shown in FIG. 1, a backlight unit of a conventional liquid crystal display device includes a light guide plate on which a light source 10, a lamp reflector 11 surrounding the light source 10, and a printing pattern 12 are formed. 13, a reflecting plate 14 and a diffusion plate 15 formed on the lower surface and the upper surface of the light guide plate 13, a prism plate 16 for condensing and outputting light, a protective film 17, and the like. At this time, the prism plate 16 is composed of a lower prism plate 16a and an upper prism plate 16b.
이와 같이 구성된 백라이트 유니트는, 광원(10)로부터 발생되어진 빛이 램프 반사체(11)에 의해 반사되고, 도광판(13)과 확산판(15)을 통해 액정패널(미도시)로 입사되어 소정의 화상이 형성되도록 한다. 이때 광원(10)에서 나온 빛은 반사판(14)에 의해 외부로의 누출이 방지된 채 도광판(13)으로 입사되고 인쇄패턴(18)에 의해 고르게 산란된다. 이와 같이 산란된 빛은 확산판(15)에 의해 더욱 균일화된 후, 프리즘판(16)을 통과하면서 일정각으로 진행 경로가 전환된 후,편광판(미도시)으로 수직하게 입사되어 어느 한 방향의 선편광이 된다.In the backlight unit configured as described above, light generated from the light source 10 is reflected by the lamp reflector 11, and is incident on the liquid crystal panel (not shown) through the light guide plate 13 and the diffuser plate 15 to provide a predetermined image. To be formed. At this time, the light emitted from the light source 10 is incident on the light guide plate 13 while preventing leakage to the outside by the reflection plate 14 and is evenly scattered by the printing pattern 18. The light scattered as described above is further uniformized by the diffuser plate 15, and then the traveling path is switched at a predetermined angle while passing through the prism plate 16. Linear polarization.
한편, 종래 기술에 따른 액정표시장치의 백라이트 유니트에 있어서는 다음과 같은 문제점이 있다.On the other hand, the backlight unit of the liquid crystal display according to the prior art has the following problems.
종래 고휘도를 요하는 LCD 모니터 등에서는 램프를 2개 이상의 다중으로 사용하는 경우가 있다. 이때, 2개 이상의 다중 램프를 사용시 동일한 컬러를 발광하는 램프를 사용하고 있으며, 서로 다른 램프를 독립적으로 구동하는 것이 아니라 동시에 통합적으로 구동시키고 있다.In a conventional LCD monitor requiring high brightness, two or more lamps may be used. In this case, when two or more multiple lamps are used, a lamp that emits the same color is used, and different lamps are not driven independently but simultaneously.
따라서, 종래 다중 램프를 채용한 백라이트 유니트로는 여러 램프의 컬러 합성에 의한 조명색 조절은 이루어지지 않는 문제점이 있다. 또한, 화면상 화이트(White) 표시색 조절은 패널의 투과율을 감소시켜 이룩하므로 에너지 효율을 감소시키는 문제점이 있다.Therefore, there is a problem in that the backlight unit employing the multiple lamps does not control the illumination color by color synthesis of several lamps. In addition, the adjustment of the white display color on the screen is achieved by reducing the transmittance of the panel, thereby reducing energy efficiency.
이에, 본 발명은 상기 종래 기술의 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 다중 램프의 독립적 구동으로 조명색을 합성하고 화이트 표시색도 조절할 수 있는 액정표시장치의 백라이트 유니트를 제공함에 있다.Accordingly, the present invention has been made to solve the problems of the prior art, an object of the present invention is to provide a backlight unit of the liquid crystal display device that can synthesize the illumination color by the independent driving of multiple lamps and also adjust the white display color.
도 1은 종래 기술에 따른 액정표시장치의 백라이트 유니트를 설명하기 위한 단면도.1 is a cross-sectional view illustrating a backlight unit of a liquid crystal display device according to the prior art.
도 2는 본 발명에 따른 액정표시장치의 백라이트 유니트를 설명하기 위한 단면도.2 is a cross-sectional view illustrating a backlight unit of a liquid crystal display device according to the present invention;
* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
100: 다중 램프100a: 광원 1100: multiple lamp 100a: light source 1
100b: 광원 2100c: 광원 3100b: light source 2100c: light source 3
110: 램프 반사체120: 인쇄 패턴110: lamp reflector 120: printing pattern
130: 도광판140: 반사판130: Light guide plate 140: Reflective plate
150: 확산판160: 프리즘판150: diffusion plate 160: prism plate
160a: 하부 프리즘판160b: 상부 프리즘판160a: lower prism plate 160b: upper prism plate
170: 보호판170: shield
상기 발명의 목적을 달성하기 위한 본 발명에 따른 액정표시장치의 백라이트 유니트는, 램프와; 상기 램프를 둘러싸고 있는 램프 반사체와, 상기 램프에서 발생되는 빛을 이동시키는 도광판과; 상기 도광판의 하면에 형성되어 빛을 반사하는 반사판과, 상기 도광판의 상면에 형성되어 난반사된 빛을 확산시키는 확산판과; 상기확산판을 통해 확산되는 빛을 집광하여 출력하는 프리즘판을 포함하여 구성되는 액정표시소자용 백라이트 유니트에 있어서, 상기 램프는 2개 이상의 광원으로 이루어진 다중 램프로 구성되되, 상기 광원은 각각 독립적으로 구동되고, 상기 광원의 색구성은 원하는 조명색을 구현 가능케 하는 컬러로 구성되는 것을 특징으로 한다.The backlight unit of the liquid crystal display device according to the present invention for achieving the object of the present invention includes a lamp; A lamp reflector surrounding the lamp and a light guide plate for moving light generated from the lamp; A reflector formed on a lower surface of the light guide plate to reflect light, and a diffuser plate formed on an upper surface of the light guide plate to diffuse diffusely reflected light; In the backlight unit for a liquid crystal display device comprising a prism plate for collecting and outputting light diffused through the diffusion plate, the lamp is composed of multiple lamps consisting of two or more light sources, the light sources are each independently Driven, the color scheme of the light source is characterized in that it is composed of a color that can implement the desired illumination color.
이하, 본 발명에 따른 액정표시장치의 백라이트 유니트를 첨부한 도면을 참조하여 상세히 설명한다.Hereinafter, a backlight unit of a liquid crystal display according to the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명에 따른 액정표시장치의 백라이트 유니트를 설명하기 위한 단면도이다.2 is a cross-sectional view for describing a backlight unit of a liquid crystal display according to the present invention.
본 발명에 따른 액정표시장치의 백라이트 유니트는, 도 2에 도시된 바와 같이, 고전압의 펄스를 발생시키는 구동부(미도시)의 출력단에 연결되어 인가되는 펄스에 따라 방전하여 광을 발생시키는 램프(100)가 배치되어 있다.As shown in FIG. 2, the backlight unit of the liquid crystal display according to the present invention is connected to an output terminal of a driving unit (not shown) that generates a pulse of high voltage and discharges light according to an applied pulse to generate light 100. ) Is arranged.
또한, 램프 반사체(110)가 상기 램프(100)를 둘러싸고 있으며, 상기 램프(100) 측면에는 상기 램프(100)서 발생되는 빛을 이동시키는 도광판(130)이 배치되어 있다. 여기서, 상기 도광판(130) 하면에는 빛을 난반사시키는 인쇄 패턴(120)이 형성되어 있다.In addition, a lamp reflector 110 surrounds the lamp 100, and a light guide plate 130 for moving light generated by the lamp 100 is disposed on the side of the lamp 100. Here, the light guide plate 130 is formed with a printed pattern 120 for diffusely reflecting light.
한편, 상기 도광판(130)의 하면과 상면에는 각각 다른 작용을 하는 수매의 광학판이 부착되어 있다.On the other hand, a plurality of optical plates having different functions are attached to the lower surface and the upper surface of the light guide plate 130.
구체적으로, 상기 도광판(130)의 하면에 형성되어 빛을 반사하는 반사판(140)과, 상기 도광판(130)의 상면에 형성되어 난반사된 빛을 확산시키는 확산판(150)과, 상기 확산판(150)을 통해 확산되는 빛을 집광하여 출력하는프리즘판(160)과, 상기 프리즘판(160)을 외부의 충격으로부터 보호하는 보호막(170)이 부착되어 있다.Specifically, a reflecting plate 140 formed on a lower surface of the light guide plate 130 to reflect light, a diffusion plate 150 formed on an upper surface of the light guide plate 130 to diffuse diffusely reflected light, and the diffusion plate ( A prism plate 160 for collecting and outputting light diffused through the light 150 and a protective film 170 for protecting the prism plate 160 from an external impact are attached.
상기 프리즘판(160)은 하부 프리즘판(160a) 및 상부 프리즘판(160b)으로 구성되어 있으며, 상기 보호막(170)은 본 발명의 필수 구성 요소인 것은 아니다.The prism plate 160 includes a lower prism plate 160a and an upper prism plate 160b, and the protective film 170 is not an essential component of the present invention.
한편, 상기 램프(100)는 2개 이상의 광원, 예를 들어, 3개의 광원(100a)(100b)(100c)으로 구성된 다중 램프이다. 상기 다중 램프(100)는 빛의 합성 원리를 응용한 것으로, 상기 광원(100a)(100b)(100c)은 형광체를 일정하게 혼합하여 목표로 하는 조명색을 구현 가능케 하는 컬러로 구성된다.On the other hand, the lamp 100 is a multiple lamp consisting of two or more light sources, for example, three light sources 100a, 100b, 100c. The multiple lamp 100 applies the principle of combining light, and the light sources 100a, 100b, and 100c are composed of colors that enable a target color to be mixed by uniformly mixing phosphors.
상기 다중 램프(100)를 구성하는 광원(100a)(100b)(100c) 각각은 최종 소비자가 직접 일정 범위내에서 독립적으로 구동시켜 조절 가능하며, 이로 인해 최종 소비자가 표시화면색을 조절할 수 있는 구동 방식이다.Each of the light sources 100a, 100b, and 100c constituting the multiple lamps 100 can be independently driven by the end consumer within a predetermined range and can be adjusted, thereby driving the end consumer to adjust the display screen color. That's the way.
또한, 표시화면색의 조절 가능한 범위는 표시화면상에 특정한 표시, 예를 들어, 그래프 또는 수치상으로 표시될 수 있으며, 현재 조절한 레벨(Level)도 표시화면상에 그래프 또는 수치상으로도 표시될 수 있다.In addition, the adjustable range of the display screen color may be displayed in a specific display on the display screen, for example, in a graph or a numerical value, and the currently adjusted level may also be displayed in a graph or numerical value on the display screen. have.
상기 다중 램프(100)를 구성하는 광원(100a)(100b)(100c)이 각각 적색, 녹색 및 청색 광원일 경우, 각 광원(100a)(100b)(100c)의 형광체 종류는 화이트(White) 표시색을 구성하는데 사용되는 적색, 녹색 및 청색 형광체이다. 이 경우, 상기 적색, 녹색 및 청색 형광체를 사용한 광원의 발광도는 입력전원에 일정한 발광효율을 갖게되는 표준화된 광원이다.When the light sources 100a, 100b and 100c constituting the multiple lamp 100 are red, green, and blue light sources, the phosphor type of each light source 100a, 100b, 100c is white. Red, green and blue phosphors used to construct color. In this case, the luminescence of the light source using the red, green and blue phosphors is a standardized light source having a constant luminous efficiency at the input power source.
상기와 같이 수개의 광원으로 구성된 다중 램프는, 각각의 광원을 독립적으로 구동되어 각 광원의 강도가 조절되어, 이로 인해 발광된 색이 조절된다.Multiple lamps composed of several light sources as described above are driven independently of each light source to adjust the intensity of each light source, thereby controlling the color emitted.
본 발명의 원리와 정신에 위배되지 않는 범위에서 여러 실시예는 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 자명할 뿐만 아니라 용이하게 실시할 수 있다. 따라서, 본원에 첨부된 특허청구범위는 이미 상술된 것에 한정되지 않으며, 하기 특허청구범위는 당해 발명에 내재되어 있는 특허성 있는 신규한 모든 사항을 포함하며, 아울러 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해서 균등하게 처리되는 모든 특징을 포함한다.Various embodiments can be easily implemented as well as self-explanatory to those skilled in the art without departing from the principles and spirit of the present invention. Accordingly, the claims appended hereto are not limited to those already described above, and the following claims are intended to cover all of the novel and patented matters inherent in the invention, and are also common in the art to which the invention pertains. Includes all features that are processed evenly by the knowledgeable.
이상에서 설명한 바와 같이, 본 발명에 따른 액정표시장치의 백라이트 유니트에 있어서는 다음과 같은 효과가 있다.As described above, the backlight unit of the liquid crystal display according to the present invention has the following effects.
본 발명에 있어서는, 종래 화면에 표시되는 화이트 색조절을 위해 패널의 투과율을 감소시키는 대신 다중 램프를 채용하는 조명계의 서로 다른 색을 갖는 조명광원을 각자 독립적으로 구동시켜 조명색을 합성하고, 이로 인해 표시화면의 화이트색도 조절할 수 있게된다.In the present invention, instead of reducing the transmittance of the panel to adjust the white color displayed on the conventional screen, by independently driving the illumination light sources having different colors of the illumination system employing multiple lamps to synthesize the illumination colors, thereby displaying You can also adjust the white color of the screen.
따라서, 본 발명에 의하면 종래 다종의 광원색을 갖는 광원을 수개의 범용화된 색으로 표준화할 수 있는 효과가 있으며, 색조정에 따르는 시간 및 경제적 손실을 줄일 수 있는 효과도 있다.Therefore, according to the present invention, it is possible to standardize light sources having various light source colors to several generalized colors, and to reduce time and economical loss due to color tone definition.
또한, 본 발명에 의하면 투과율 감소 방식이 아닌 조명자체의 양을 조절하는 것이므로 조명효율 감소가 없고, 결과적으로 소비전력이 감소되는 효과가 있다.In addition, according to the present invention is to control the amount of the lighting itself, not the method of reducing transmittance, there is no reduction in lighting efficiency, and consequently the power consumption is reduced.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010053673A KR20030020538A (en) | 2001-09-01 | 2001-09-01 | Back light unit for liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020010053673A KR20030020538A (en) | 2001-09-01 | 2001-09-01 | Back light unit for liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20030020538A true KR20030020538A (en) | 2003-03-10 |
Family
ID=27722122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020010053673A KR20030020538A (en) | 2001-09-01 | 2001-09-01 | Back light unit for liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20030020538A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9417372B2 (en) | 2012-08-09 | 2016-08-16 | Samsung Display Co., Ltd. | Lens sheet including lens with variable curvature and display device including the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301797A (en) * | 1994-05-06 | 1995-11-14 | Hitachi Ltd | Liquid crystal display device |
| KR20000012479A (en) * | 1999-12-07 | 2000-03-06 | 최병덕 | Device for pressing and taping leather |
| KR20000043524A (en) * | 1998-12-29 | 2000-07-15 | 윤종용 | Backlight unit of liquid crystal display device |
| KR20010058091A (en) * | 1999-12-24 | 2001-07-05 | 이형도 | Back light for liquid crystal display |
-
2001
- 2001-09-01 KR KR1020010053673A patent/KR20030020538A/en not_active Application Discontinuation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301797A (en) * | 1994-05-06 | 1995-11-14 | Hitachi Ltd | Liquid crystal display device |
| KR20000043524A (en) * | 1998-12-29 | 2000-07-15 | 윤종용 | Backlight unit of liquid crystal display device |
| KR20000012479A (en) * | 1999-12-07 | 2000-03-06 | 최병덕 | Device for pressing and taping leather |
| KR20010058091A (en) * | 1999-12-24 | 2001-07-05 | 이형도 | Back light for liquid crystal display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9417372B2 (en) | 2012-08-09 | 2016-08-16 | Samsung Display Co., Ltd. | Lens sheet including lens with variable curvature and display device including the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020006044A1 (en) | Assembly of a display device and an illumination system | |
| KR101113236B1 (en) | Backlight unit for dynamic image and display employing the same | |
| US20010035853A1 (en) | Assembly of a display device and an illumination system | |
| US6672733B2 (en) | Backlight unit and liquid crystal device using backlight units | |
| JP4537349B2 (en) | Light emitting package, and backlight unit and liquid crystal display device including the same | |
| JP4839379B2 (en) | Backlight device and display device using the same | |
| JP2004519816A (en) | Lighting system and display device | |
| JP2006313747A (en) | Hybrid backlight device | |
| JP2001135118A (en) | Panel light source device and flat display using the same | |
| JP2006267167A (en) | Surface lighting device and liquid crystal display device equipped with the same | |
| EP1392998A1 (en) | Illumination system and display device | |
| JP2006236701A (en) | Backlight device and liquid crystal display | |
| JPH09146089A (en) | Surface light source for color display device and liquid crystal display device | |
| US20100225848A1 (en) | Backlight device, and liquid crystal display using the same | |
| KR19990062962A (en) | Color display | |
| KR100421900B1 (en) | back light of liquid grystal display device | |
| JP4760048B2 (en) | Backlight device and liquid crystal display device | |
| JP2005518085A (en) | Compact lighting system and display device | |
| US20050099791A1 (en) | Backlighting system for liquid crystal displays | |
| JPH09222602A (en) | Liquid crystal device | |
| KR20030020538A (en) | Back light unit for liquid crystal display device | |
| KR20030047173A (en) | Backlight unit | |
| KR20070040710A (en) | Light emitting package and back light unit and liquid crystal display device having the same | |
| JP2007299703A (en) | Lighting system, display apparatus, and lighting method | |
| JP5130613B2 (en) | Backlight device and liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| N231 | Notification of change of applicant | ||
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |