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KR100701245B1 - Front frames for flat fluorescent lamp had back light unit - Google Patents

Front frames for flat fluorescent lamp had back light unit Download PDF

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Publication number
KR100701245B1
KR100701245B1 KR1020050030781A KR20050030781A KR100701245B1 KR 100701245 B1 KR100701245 B1 KR 100701245B1 KR 1020050030781 A KR1020050030781 A KR 1020050030781A KR 20050030781 A KR20050030781 A KR 20050030781A KR 100701245 B1 KR100701245 B1 KR 100701245B1
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South Korea
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fluorescent lamp
emitting fluorescent
front frame
surface emitting
backlight unit
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KR1020050030781A
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Korean (ko)
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KR20060108413A (en
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김청수
조도영
박종리
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미래산업 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
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133604—Direct backlight with lamps
    • 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
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133605—Direct backlight including specially adapted 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133308—Support structures for LCD panels, e.g. frames or bezels
    • G02F1/133317—Intermediate frames, e.g. between backlight housing and front frame
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/02—Function characteristic reflective

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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)
  • Planar Illumination Modules (AREA)

Abstract

본 발명은 백라이트 유닛에 내장된 면발광 형광램프의 상측 둘레면을 지지하는 상부커버의 내부 측면에 소정의 경사각으로 이루어진 반사면을 형성하여 형광램프의 표시영역을 증가시킬 수 있는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임에 관한 것으로서, 그 특징적인 구성은 복수개의 채널이 형성된 면발광 형광램프(11)와, 상기 면발광 형광램프(11)를 수용하기 위한 케이스(10)와, 상기 면발광 형광램프(11)의 상부측에 설치되어 빛을 균일하게 방사하는 확산판(13)과, 상기 면발광 형광램프(11)의 상면 둘레부를 지지하고 확산판(13)을 고정시키도록 케이스(10)의 상면에 설치된 전면 프레임(14)을 포함하는 면발광 형광램프가 내장된 백라이트 유닛에 있어서, 상기 전면 프레임(14)의 내측 둘레면에는 하부는 면발광 형광램프의 중앙부로 향하고 상부는 면발광 형광램프의 둘레부로 향하도록 소정의 각도(θ)를 갖는 반사면(14a)이 형성된 것이다.The present invention provides a surface emitting fluorescent lamp which can increase the display area of a fluorescent lamp by forming a reflective surface having a predetermined inclination angle on an inner side surface of an upper cover supporting an upper circumferential surface of the surface emitting fluorescent lamp built in a backlight unit. The front frame for a built-in backlight unit, characterized in that the surface-emitting fluorescent lamp 11, a plurality of channels formed, a case 10 for accommodating the surface-emitting fluorescent lamp 11, and the surface A diffusion plate 13 disposed on an upper side of the light emitting fluorescent lamp 11 to uniformly radiate light, and a case to support the upper periphery of the surface light emitting fluorescent lamp 11 and to fix the diffusion plate 13; 10. A backlight unit incorporating a surface emitting fluorescent lamp comprising a front frame 14 installed on an upper surface thereof, wherein a lower portion of the inner peripheral surface of the front frame 14 faces a central portion of the surface emitting fluorescent lamp. The top is formed with a reflecting surface (14a) having a predetermined angle (θ) so as to face the peripheral portion of the light-emitting fluorescent lamp surface.

엘시디, 백라이트, 면발광 형광램프, 프레임, 케이스, 반사면  LCD, backlight, surface emitting fluorescent lamp, frame, case, reflective surface

Description

면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임{Front frames for flat fluorescent lamp had back light unit}Front frame for flat fluorescent lamp had back light unit

도1은 종래 내부전극을 갖는 면발광 형광램프를 나타내는 평면도.1 is a plan view showing a surface emitting fluorescent lamp having a conventional internal electrode;

도2는 종래 외부전극을 갖는 면발광 형광램프를 나타낸 평면도.Figure 2 is a plan view showing a surface emitting fluorescent lamp having a conventional external electrode.

도3은 종래 백라이트 유닛을 나타낸 단면도.3 is a cross-sectional view showing a conventional backlight unit.

도4는 도3의 A - A선 단면도.4 is a cross-sectional view taken along the line AA of FIG.

도5는 본 발명에 따른 전면 프레임을 나타낸 사시도.5 is a perspective view showing a front frame according to the present invention.

도6은 본 발명에 따른 전면 프레임이 설치된 백라이트 유닛을 나타낸 단면도.6 is a cross-sectional view showing a backlight unit provided with a front frame according to the present invention;

도7은 도6의 B - B선 단면도. FIG. 7 is a sectional view taken along the line BB of FIG. 6; FIG.

도8 및 도9는 본 발명에 따른 다른 실시예의 전면 프레임을 나타낸 단면도.8 and 9 are cross-sectional views showing a front frame of another embodiment according to the present invention.

※도면의 주요부분에 대한 부호의 설명※※ Explanation of symbols about main part of drawing ※

10 : 케이스 11 : 면발광 형광램프10 case 11 surface emitting fluorescent lamp

11a : 채널 12 : 지지부재11a channel 12 support member

13 : 확산판 14 : 전면 프레임13: diffuser 14: front frame

14a : 반사면 14b : 수용홈14a: reflective surface 14b: receiving groove

본 발명은 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임에 관한 것으로서, 더욱 상세하게는 백라이트 유닛에 내장된 면발광 형광램프의 상측 둘레면을 지지하는 상부커버의 내부 측면에 소정의 경사각으로 이루어진 반사면을 형성하여 형광램프의 표시영역을 증가시킬 수 있는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임에 관한 것이다. The present invention relates to a front frame for a backlight unit with a built-in surface emitting fluorescent lamp, and more particularly to a predetermined angle of inclination on the inner side of the upper cover for supporting the upper circumferential surface of the surface emitting fluorescent lamp built in the backlight unit. The present invention relates to a front frame for a backlight unit incorporating a surface emitting fluorescent lamp capable of forming a reflective surface to increase the display area of the fluorescent lamp.

평판형 디스플레이장치에서 각광받고 있는 엘시디(LCD) 소자는 자체적으로 발광하지 못하는 비 발광성소자이기 때문에 별도의 광원을 가진 백라이트장치가 요구되고 있다. 이러한 백라이트장치는 직하형과 에지형으로 분류되고 있다. Since LCD devices, which are spotlighted in flat panel display devices, are non-luminescent devices that do not emit light by themselves, a backlight device having a separate light source is required. Such backlight devices are classified into direct type and edge type.

상기의 방식들은 광원(램프)의 위치에 따른 구분으로서 에지형은 투명도광판의 측단면에 광원을 위치시키고 도광판의 한 면을 반사 확산시켜서 광을 다중반사시킴으로서 얻은 면광원을 LCD의 셀(cell)로 비추는 방식이며, 직하형은 광원을 엘시디 셀의 직하부에 위치시키고 광원의 전면에는 확산판을 광원의 배면에는 반사판을 각각 배치하여 광원으로부터 발산된 빛을 반사, 확산시키는 방식이다. The above methods are classified according to the position of the light source (lamp). The edge type is a surface light source obtained by placing a light source on the side end surface of the transparent light guide plate and reflecting and diffusing one side of the light guide plate to multi-reflect light. The direct type is a method of reflecting and diffusing light emitted from the light source by placing the light source directly under the LCD cell, and placing a diffuser plate on the front of the light source and a reflector plate on the back of the light source.

직하형은 높은 휘도를 얻을 수 있기 때문에 고휘도가 요구되는 백라이트에 적합하지만, 휘도균일도가 낮은 단점이 있다. 이에 비하여 에지형은 휘도가 낮지만 휘도균일도가 높은 이점이 있다.The direct type is suitable for a backlight requiring high luminance because high luminance can be obtained, but has a disadvantage of low luminance uniformity. On the other hand, the edge type has the advantage of low luminance but high luminance uniformity.

도1은 종래 내부전극을 갖는 면발광 형광램프를 나타내는 평면도이다.1 is a plan view showing a surface emitting fluorescent lamp having a conventional internal electrode.

여기에서 참조되는 면발광 형광램프(1)는 램프 상판(2)과 램프 하판(3)이 상 호 부착되고, 내부에는 방전가스가 주입되며 외부와 차단되는 다수개의 채널들이 상호 인접한 상태로 구성되어 있으며, 각 채널의 양 단부에는 내부 전극(4)이 내장되어 있다. The surface emitting fluorescent lamp 1 referred to herein has a lamp upper plate 2 and a lamp lower plate 3 attached to each other, discharge gas is injected into the inside, and a plurality of channels blocked from the outside are configured to be adjacent to each other. Internal electrodes 4 are built in both ends of each channel.

상기 채널을 형성하는 것이 램프상판이다. 또한 각각의 단부에는 내부전극(4)이 설치되어 있다. 이러한 내부전극(4)은 면발광 형광램프(1)의 내부로 삽입되어 있으며, 이렇게 내부전극(4)을 삽입, 고정하기 위하여 많은 제조공정들이 추가된다. It is the lamp top that forms the channel. At each end, an internal electrode 4 is provided. The internal electrode 4 is inserted into the surface emitting fluorescent lamp 1, and many manufacturing processes are added to insert and fix the internal electrode 4 in this way.

상기와 같이 면발광 형광램프(1)는, 전체 표면적에 걸쳐서 광을 균일하게 방사하기 때문에, 종래 에지방식과 직하방식의 단점을 보완하여 고휘도와 고휘도균일도를 제공할 수 있으며, 특히 채널 형상이 휘도 균일도에 유리한 형태로 유리 성형을 이용하여 형성됨으로서 휘도 및 휘도균일도가 현저하게 개선된 이점이 있다. 또한 채널 형상도 금형의 모양에 따라 여러 형태가 가능할 수 있다.Since the surface-emitting fluorescent lamp 1 emits light uniformly over the entire surface area, the surface-emitting fluorescent lamp 1 can provide a high brightness and high brightness uniformity by compensating the disadvantages of the conventional edge method and the direct method, in particular, the channel shape is luminance Since it is formed by using glass molding in a form advantageous for uniformity, there is an advantage that the luminance and the luminance uniformity are remarkably improved. In addition, the channel shape may be various forms depending on the shape of the mold.

도2는 종래 외부전극을 갖는 면발광 형광램프를 나타낸 평면도이다.2 is a plan view showing a surface emitting fluorescent lamp having a conventional external electrode.

여기에서 참조되는 바와 같이 면발광 형광램프(1a)는 램프 상판(2a)과 램프 하판(3a)이 상호 부착되고, 내부에는 방전가스가 주입되며 외부와 차단되는 다수개의 채널들이 상호 인접한 상태로 구성되어 있으며, 각 채널의 양 단부 외측 둘레면에는 외부 전극(4a)이 설치되어 있다. As referred to herein, the surface emitting fluorescent lamp 1a includes a lamp upper plate 2a and a lamp lower plate 3a attached to each other, a discharge gas is injected into the inside, and a plurality of channels blocked from the outside are adjacent to each other. The external electrodes 4a are provided on the outer peripheral surfaces of both ends of each channel.

상기 외부전극(4a)은 전기가 잘 통하는 도전성 물체를 부착함으로서 간단히 구성된다. 그러나, 디스플레이가 대형화 될 수록 이 단일 채널의 길이는 기하급수적으로 길어지게 된다. The external electrode 4a is simply constructed by attaching a conductive object through which electricity is well communicated. However, as the display grows larger, the length of this single channel becomes exponentially longer.

채널의 길이가 길어지게 되면, 형광 램프의 시동 및 구동 전압이 높아지게 되므로 전자파에 의한 많은 문제점이 발생하며, 전류 누설 현상이 발생된다. 또한, 형광 램프의 관 전류가 높아지므로, 램프의 수명이 단축되는 문제가 있다.If the length of the channel is longer, since the starting and driving voltage of the fluorescent lamp is increased, many problems occur due to electromagnetic waves, and current leakage occurs. In addition, since the tube current of the fluorescent lamp increases, there is a problem that the life of the lamp is shortened.

한편, 도3은 종래 백라이트 유닛을 나타낸 단면도이고, 도4는 도3의 A - A선 단면도로서, 여기에서 참조되는 바와 같이, 외부 몸체 역할을 하는 케이스(100)의 내부에 면발광 형광램프(110)가 내장되어 있고, 그 면발광 형광램프(110)의 저면에는 면발광 형광램프(110)가 케이스(100)와 이격되도록 지지하는 지지부재(120)가 설치되어 있으며, 상기 면발광 형광램프(110)의 상측에는 전면으로 균일한 빛이 조사되도록 확산판(130)이 설치되어 있다.3 is a cross-sectional view illustrating a conventional backlight unit, and FIG. 4 is a cross-sectional view taken along a line A-A of FIG. 3, and as referred to herein, a surface emitting fluorescent lamp ( 110 is built-in, the bottom surface of the surface emitting fluorescent lamp 110 is provided with a support member 120 for supporting the surface emitting fluorescent lamp 110 to be spaced apart from the case 100, the surface emitting fluorescent lamp The diffusion plate 130 is installed on the upper side of the 110 so that uniform light is irradiated to the front surface.

그리고, 상기 케이스(100)의 상측에는 면발광 형광램프(110)가 분리되지 않도록 면발광 형광램프(110)의 상면 둘레면을 지지함과 동시에 확산판(130)을 고정시키는 전면 프레임(140)이 설치되어 있는 것으로서, 상기 전면 프레임(140)의 내측 공간은 백라이트 유닛의 표시영역으로 사용되는 것이다.The front frame 140 supports the upper circumferential surface of the surface emitting fluorescent lamp 110 and fixes the diffuser plate 130 so that the surface emitting fluorescent lamp 110 is not separated from the case 100. In this case, the inner space of the front frame 140 is used as a display area of the backlight unit.

그러나 이러한 종래의 전면 프레임(140)의 내측 둘레면은 면발광 형광램프(110)에서 발생된 빛이 외부로 조사되는 방향에 대하여 수직한 방향으로 형성되어 있으므로, 상기 전면 프레임(140)에 의해서 가려지는 부분(비 표시영역)이 증가하게 되는 것으로서, 면발광 형광램프(110)의 표시영역이 감소되는 문제점이 있었다.However, since the inner circumferential surface of the conventional front frame 140 is formed in a direction perpendicular to the direction in which the light emitted from the surface emitting fluorescent lamp 110 is irradiated to the outside, it is covered by the front frame 140. As the losing portion (non-display area) is increased, there is a problem that the display area of the surface emitting fluorescent lamp 110 is reduced.

한편, 백라이트 유닛의 크기가 증가함에 따라서, 중량의 감소 및 면발광 형광램프(110)의 효율을 향상시키기 위한 다양한 기술이 개발되고 있는 추세에 있다.Meanwhile, as the size of the backlight unit increases, various technologies for reducing the weight and improving the efficiency of the surface emitting fluorescent lamp 110 are being developed.

그러나 상술한 바와 같이 면발광 형광램프(110)의 둘레면에 발생되는 비발광 부분으로 인하여 면발광 형광램프(110)의 효율을 향상시키는데 한계가 있었다.However, as described above, there is a limit in improving the efficiency of the surface emitting fluorescent lamp 110 due to the non-light emitting portion generated on the circumferential surface of the surface emitting fluorescent lamp 110.

본 발명은 이러한 문제점을 해결하기 위하여 제안된 것으로, 본 발명의 목적은 엘시디(LCD)의 백라이트용으로 사용되는 면발광 형광 램프의 상면을 지지하는 전면 프레임의 내측면에 경사각을 갖는 반사면을 형성하여 백라이트 유닛의 발광부분을 증가시킬 수 있는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임을 제공함에 있다.The present invention has been proposed to solve this problem, and an object of the present invention is to form a reflective surface having an inclined angle on the inner surface of the front frame that supports the upper surface of the surface emitting fluorescent lamp used for the backlight of LCD. Accordingly, the present invention provides a front frame for a backlight unit having a surface emitting fluorescent lamp capable of increasing a light emitting portion of the backlight unit.

상기의 목적을 달성하기 위한 본 발명의 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임은 복수개의 채널이 형성된 면발광 형광램프와, 상기 면발광 형광램프를 수용하기 위한 케이스와, 상기 면발광 형광램프의 상부측에 설치되어 빛을 균일하게 방사하는 확산판과, 상기 면발광 형광램프의 상면 둘레부를 지지하고 확산판을 고정시키도록 케이스의 상면에 설치된 전면 프레임을 포함하는 면발광 형광램프가 내장된 백라이트 유닛에 있어서, 상기 전면 프레임의 내측 둘레면에는 하부는 면발광 형광램프의 중앙부로 향하고 상부는 면발광 형광램프의 둘레부로 향하도록 소정의 각도를 갖는 반사면이 형성된 것이다.In order to achieve the above object, a front frame for a backlight unit having a surface emitting fluorescent lamp according to the present invention includes a surface emitting fluorescent lamp having a plurality of channels, a case for accommodating the surface emitting fluorescent lamp, and the surface emitting fluorescent lamp. Diffusion plate is installed on the upper side of the lamp to uniformly emit light, and a surface emitting fluorescent lamp including a front frame installed on the upper surface of the case to support the upper peripheral portion of the surface emitting fluorescent lamp and to fix the diffuser plate In the backlight unit, a reflection surface having a predetermined angle is formed on an inner circumferential surface of the front frame so that a lower portion thereof faces a center portion of the surface emitting fluorescent lamp and an upper portion thereof faces a circumferential portion of the surface emitting fluorescent lamp.

이하 첨부된 도면을 참고하여 본 발명을 상세히 설명하면 다음과 같다. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도5는 본 발명에 따른 전면 프레임을 나타낸 사시도이고, 도6은 본 발명에 따른 전면 프레임이 설치된 백라이트 유닛을 나타낸 단면도이며, 도7은 도6의 B - B선 단면도이다. 5 is a perspective view showing a front frame according to the present invention, FIG. 6 is a sectional view showing a backlight unit provided with a front frame according to the present invention, and FIG.

여기에서 참조되는 바와 같이 본 발명은 복수개의 채널(11a)이 형성된 면발광 형광램프(11)를 수용하는 케이스(10)가 마련되어 있고, 그 케이스(10)의 내부에는 상기 면발광 형광램프(11)를 케이스(10)로 이격된 상태로 지지하기 위한 지지부재(12)가 설치되어 있다.As referred to herein, the present invention includes a case 10 accommodating a surface emitting fluorescent lamp 11 in which a plurality of channels 11a are formed, and the surface emitting fluorescent lamp 11 is provided inside the case 10. ) Is provided with a support member 12 for supporting the case 10 spaced apart from the case 10.

한편, 상기 케이스(10)의 상측에는 면발광 형광램프(11)의 상면 둘레부를 지지하는 전면 프레임(14)이 설치되어 있되, 상기 상부 케이스(10)에는 면발광 형광램프(11)에서 발생된 빛을 균일하게 방사하기 위한 확산판(13)이 설치되어 있다.On the other hand, the upper side of the case 10 is provided with a front frame 14 for supporting the upper periphery of the surface emitting fluorescent lamp 11, the upper case 10 is generated from the surface emitting fluorescent lamp 11 A diffuser plate 13 for uniformly emitting light is provided.

그리고 상기 전면 프레임(14)의 내측 둘레면에는 면발광 형광램프(11)에서 발생된 빛을 전면으로 반사시키도록 반사면(14a)이 형성되어 있되, 그 반사면(14a)의 하부는 면발광 형광램프(11)의 중앙부로 향하고 상부는 면발광 형광램프(11)의 둘레부로 향하도록 소정의 각도(θ)를 갖도록 형성되어 있고, 상기 반사면(14a)의 각도(θ)는 30°~ 60°를 유지하는 것이 바람직하다.In addition, a reflective surface 14a is formed on the inner circumferential surface of the front frame 14 to reflect the light generated from the surface emitting fluorescent lamp 11 to the front surface, and the lower surface of the reflective surface 14a is surface emitting. It is formed to have a predetermined angle (θ) to face the central portion of the fluorescent lamp 11 and to the circumference of the surface emitting fluorescent lamp 11, the angle (θ) of the reflective surface 14a is 30 ° ~ It is desirable to maintain 60 °.

왜냐하면, 상기 반사면(14a)의 각도(θ)가 30°이하이면, 반사면(14a)을 통하여 반사되는 빛의 양이 감소되어 확산판(13)의 둘레부에 암부가 형성되고, 반사면(14a)의 각도(θ)가 60°이상이면, 반사면(14a)을 통하여 반사되는 빛이 증가하여 확산판(13)의 암부가 형성되지 않지만, 상기 확산판(13)을 통하여 빛이 조사되는 발광부분이 감소되게 된다.If the angle θ of the reflective surface 14a is 30 ° or less, the amount of light reflected through the reflective surface 14a is reduced to form a dark portion at the periphery of the diffuser plate 13, and the reflective surface When the angle θ of the 14a is 60 ° or more, the light reflected through the reflecting surface 14a is increased so that the dark portion of the diffuser plate 13 is not formed, but light is irradiated through the diffuser plate 13. The light emitting portion to be reduced.

한편, 상기 전면 프레임(14)은 면발광 형광램프(11)에 형성된 채널(11a)의 길이방향 둘레면 및 채널(11a)의 양 단부에 각각 접촉되게 되는 것으로서, 그 접촉력을 향상시킬 수 있도록 상기 채널(11a)의 길이방향 둘레면에 접촉되는 전면 프레 임(14)의 저면은 평면으로 형성하고, 채널(11a)의 양단부를 지지하는 전면 프레임의 저면에는 채널의 단부를 수용하는 수용홈(14b)을 형성하는 것이 바람직하다.On the other hand, the front frame 14 is in contact with the longitudinal peripheral surface of the channel (11a) formed in the surface emitting fluorescent lamp 11 and both ends of the channel (11a), respectively, so as to improve the contact force The bottom surface of the front frame 14 which is in contact with the longitudinal circumferential surface of the channel 11a is formed flat, and the receiving groove 14b which accommodates the end of the channel is formed in the bottom of the front frame which supports both ends of the channel 11a. Is preferably formed.

또한, 상기 반사면(14a)의 표면에는 면발광 형광램프(11)에서 발생된 빛의 반사효율이 향상되도록 반사물질을 도포하는 것이며, 그 반사물질은 전반사물질 또는 난반사물질 중 어느 것을 도포하여도 무방하다.In addition, a reflective material is applied to the surface of the reflective surface 14a so as to improve the reflection efficiency of the light generated by the surface emitting fluorescent lamp 11, and the reflective material may be applied to any of total reflection material or diffuse reflection material. It's okay.

한편, 상기 반사면(14a)은 소정의 각도를 갖는 평면 형태로 형성할 수도 있지만, 도8에 나타낸 바와 같이 상/하부로 돌출되는 만곡면이 순차적으로 연속되게 이어지는 파형으로 형성하거나, 도9에 나타낸 바와 같이 산과 골이 순차적으로 연속되게 이어지는 산형으로 형성할 수도 있으며, 상기 반사면(14a)을 산형으로 형성할 경우에는 그 각도(θ')는 60°를 유지하는 것이 바람직하다.On the other hand, the reflective surface 14a may be formed in a planar shape having a predetermined angle, but as shown in FIG. 8, the curved surface protruding up and down is sequentially formed in a waveform which is continuously connected to each other, or as shown in FIG. As shown, it may be formed in the form of a mountain in which the peak and the valley are successively successively formed. When the reflective surface 14a is formed in the form of a mountain, the angle θ 'is preferably maintained at 60 °.

이와 같이 구성된 본 발명을 상세히 설명하면 다음과 같다.Referring to the present invention configured as described in detail as follows.

먼저, 케이스(10)의 내측면에 지지부재(12)를 고정시킨 후 그 지지부재(12)의 상면에 면발광 형광램프(11)를 안착시킨다. First, the support member 12 is fixed to the inner surface of the case 10, and then the surface emitting fluorescent lamp 11 is seated on the upper surface of the support member 12.

이러한 상태에서 상기 면발광 형광램프(11)가 유동되지 않도록 하기 위하여 케이스(10)의 상측에 전면 프레임(14)을 설치하는 것이며, 이때에는 상기 전면 프레임(14)의 저면에 형성된 수용홈(14b)의 내부에 면발광 형광램프(11)에 형성된 채널(11a)이 삽입되도록 상기 전면 프레임(14)의 방향을 확인하여 설치하는 것이다.In this state, in order to prevent the surface emitting fluorescent lamp 11 from flowing, the front frame 14 is installed on the upper side of the case 10. In this case, the receiving groove 14b formed on the bottom of the front frame 14 is provided. ) Is installed to check the direction of the front frame 14 so that the channel (11a) formed in the surface emitting fluorescent lamp (11) is inserted.

이와 같이 전면 프레임(14)을 설치하면 상기 전면 프레임(14)의 저면은 면발광 형광램프(11)의 상부 둘레면에 긴밀하게 접촉되어 상기 면발광 형광램프(11)의 유동을 방지하게 되는 것이다. When the front frame 14 is installed in this way, the bottom surface of the front frame 14 is in close contact with the upper circumferential surface of the surface emitting fluorescent lamp 11 to prevent the flow of the surface emitting fluorescent lamp 11. .

이때 상기 전면 프레임(14)의 내측 둘레면에 형성된 반사면(14a)의 하부는 면발광 형광램프(11)에 형성된 채널(11a)에 근접되는 것이고, 반사면(14a)의 상부는 면발광 형광램프(11)의 둘레부로 향하게 되는 것이다.At this time, the lower portion of the reflective surface 14a formed on the inner circumferential surface of the front frame 14 is close to the channel 11a formed in the surface emitting fluorescent lamp 11, and the upper portion of the reflective surface 14a is surface emitting fluorescent light. It is directed to the circumference of the lamp (11).

상술한 바와 같이 전면 프레임(14)을 설치한 후 면발광 형광램프(11)를 점등시키면, 그 면발광 형광램프(11)의 중앙부에서 발생되는 빛은 전면으로 조사되는 것이며, 면발광 형광램프(11)의 둘레부에서 발생되는 빛은 반사면(14a)에 반사된 후 전면으로 조사되는 것이다.When the surface emitting fluorescent lamp 11 is turned on after the front frame 14 is installed as described above, the light generated from the center portion of the surface emitting fluorescent lamp 11 is irradiated to the front surface, and the surface emitting fluorescent lamp ( Light generated at the periphery of 11) is reflected on the reflecting surface 14a and then irradiated to the front surface.

따라서, 상기 전면 프레임(14)에 고정된 확산판(13)의 표면에는 면발광 형광램프(11)의 중앙부에서 조사되는 빛과 반사면(14a)에 의해서 반사되는 빛을 균일하게 확산시키게 되는 것으로서, 확산판(13)의 발광부분이 확대되는 것이다.Therefore, the light emitted from the center of the surface emitting fluorescent lamp 11 and the light reflected by the reflecting surface 14a are uniformly diffused on the surface of the diffusion plate 13 fixed to the front frame 14. The light emitting portion of the diffusion plate 13 is enlarged.

이와 같이 본 발명은 엘시디(LCD)의 백라이트용으로 사용되는 면발광 형광 램프를 고정시키는 전면 프레임의 내측 둘레면에 소정의 경사각으로 형성된 반사면을 통하여 빛이 반사되므로 확산판을 통하여 표시되는 발광부분을 확대시키게 되는 특유의 효과가 있다.As described above, the present invention is the light emitting portion displayed through the diffuser plate because the light is reflected through the reflecting surface formed at a predetermined inclination angle on the inner circumferential surface of the front frame for fixing the surface emitting fluorescent lamp used for the backlight of the LCD (LCD) There is a distinctive effect of expanding.

Claims (9)

복수개의 채널이 형성된 면발광 형광램프(11)와, 상기 면발광 형광램프(11)를 수용하기 위한 케이스(10)와, 상기 면발광 형광램프(11)의 상부측에 설치되어 빛을 균일하게 방사하는 확산판(13)과, 상기 면발광 형광램프(11)의 상면 둘레부를 지지하고 확산판(13)을 고정시키도록 케이스(10)의 상면에 설치된 전면 프레임(14)을 포함하는 면발광 형광램프가 내장된 백라이트 유닛에 있어서,A surface emitting fluorescent lamp 11 having a plurality of channels, a case 10 for accommodating the surface emitting fluorescent lamp 11, and an upper side of the surface emitting fluorescent lamp 11 are installed to uniformly light. Surface emitting light including a diffuser plate 13 for emitting and a front frame 14 mounted on the upper surface of the case 10 to support the upper periphery of the surface emitting fluorescent lamp 11 and to fix the diffuser plate 13. In the backlight unit with a built-in fluorescent lamp, 상기 전면 프레임(14)의 내측 둘레면에는 하부는 면발광 형광램프의 중앙부로 향하고 상부는 면발광 형광램프의 둘레부로 향하도록 30°~ 60°각도(θ)의 경사도를 갖는 반사면(14a)이 형성됨을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임. On the inner circumferential surface of the front frame 14, the reflecting surface 14a having an inclination of 30 ° to 60 ° angle θ so that the lower part faces the center of the surface emitting fluorescent lamp and the upper part faces the circumferential part of the surface emitting fluorescent lamp. Front frame for a backlight unit with a surface-emitting fluorescent lamp, characterized in that formed. 삭제delete 제1항에 있어서, 상기 면발광 형광램프(11)에 형성된 채널(11a)의 길이방향 둘레면을 지지하는 전면 프레임(14)의 저면은 평면으로 형성되고, 채널(11a)의 양 단부를 지지하는 전면 프레임(14)의 저면에는 채널(11a)의 단부를 수용하는 수용홈(14b)이 형성됨을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.The bottom surface of the front frame 14, which supports the longitudinal circumferential surface of the channel 11a formed in the surface emitting fluorescent lamp 11, is formed flat and supports both ends of the channel 11a. Receiving groove (14b) is formed on the bottom of the front frame 14 to receive the end of the channel (11a) front frame for a backlight unit with a built-in surface emitting fluorescent lamp. 제1항에 있어서, 상기 반사면(14a)의 표면에는 전반사물질이 도포됨을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.The front frame of claim 1, wherein a total reflection material is coated on a surface of the reflective surface (14a). 제1항에 있어서, 상기 반사면(14a)의 표면에는 난반사물질이 도포됨을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.The front frame of claim 1, wherein a diffuse reflection material is coated on a surface of the reflective surface (14a). 제1항에 있어서, 상기 반사면(14a)은 평면임을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.2. The front frame of claim 1, wherein the reflective surface (14a) is flat. 제1항에 있어서, 상기 반사면(14a)은 파형임을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.2. The front frame of claim 1, wherein the reflecting surface (14a) is corrugated. 제1항에 있어서, 상기 반사면(14a)은 산형임을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.The front frame for a backlight unit according to claim 1, wherein the reflective surface (14a) is of a mountain type. 제8항에 있어서, 상기 반사면(14a)에 형성된 산형의 각도(θ')는 60°임을 특징으로 하는 면발광 형광램프가 내장된 백라이트 유닛용 전면 프레임.10. The front frame according to claim 8, wherein the angle θ 'formed on the reflecting surface (14a) is 60 °.
KR1020050030781A 2005-04-13 2005-04-13 Front frames for flat fluorescent lamp had back light unit KR100701245B1 (en)

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