KR100539967B1 - LCD Display - Google Patents

LCD Display Download PDF

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Publication number
KR100539967B1
KR100539967B1 KR1019980056415A KR19980056415A KR100539967B1 KR 100539967 B1 KR100539967 B1 KR 100539967B1 KR 1019980056415 A KR1019980056415 A KR 1019980056415A KR 19980056415 A KR19980056415 A KR 19980056415A KR 100539967 B1 KR100539967 B1 KR 100539967B1
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KR
South Korea
Prior art keywords
lcd panel
light
bar
guide plate
liquid crystal
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KR1019980056415A
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Korean (ko)
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KR20000040702A (en
Inventor
김규석
신중혁
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삼성전자주식회사
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Priority to KR1019980056415A priority Critical patent/KR100539967B1/en
Publication of KR20000040702A publication Critical patent/KR20000040702A/en
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Publication of KR100539967B1 publication Critical patent/KR100539967B1/en

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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
    • G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
    • 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
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • 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
    • 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
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

본 발명은 액정표시장치에 관한 것으로, 엘시디 패널의 전면에 위치하는 도광판의 측면에 일측면이 일체로 형성되는 적어도 2면 이상의 반사면을 갖는 다각바를 위치시키고, 다각바의 양측부에 각각 형성되는 수납홈에 램프를 각각 설치함으로써, 엘시디 패널에 대한 광의 균일성을 향상시킬 수 있도록 한다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device, wherein a polygonal bar having at least two or more reflective surfaces in which one side is integrally formed on a side surface of a light guide plate positioned in front of an LCD panel, and formed on both sides of the polygonal bar, respectively. By installing the lamps in the receiving grooves, the uniformity of light with respect to the LCD panel can be improved.

Description

액정표시장치LCD Display

본 발명은 액정표시장치에 관한 것으로, 더욱 상세하게는 엘시디 패널의 전면에 위치하는 도광판의 측면에 적어도 2면 이상의 반사면을 갖는 반사부를 형성하여 엘시디 패널의 화면에 대한 광의 균일성을 향상시킬 수 있도록 한 액정표시장치에 관한 것이다.The present invention relates to a liquid crystal display device, and more particularly, to form a reflector having at least two reflective surfaces on a side surface of a light guide plate positioned in front of an LCD panel to improve uniformity of light with respect to a screen of the LCD panel. It relates to a liquid crystal display device.

일반적으로 액정표시장치는 광원에 따라서 투과형 액정표시장치와 반사형 액정표시장로 대별된다.In general, the liquid crystal display device is classified into a transmissive liquid crystal display device and a reflective liquid crystal display field depending on the light source.

투과형 액정표시장치는 엘시디 패널의 후면에 위치한 백라이트 어셈블리가 광을 엘시디 패널에 투사하여 데이터를 디스플레이할 수 있도록 이루어진다.In the transmissive liquid crystal display, a backlight assembly positioned on the rear of the LCD panel may project light onto the LCD panel to display data.

반사형 액정표시장치는 백라이트 어셈블리 없이 외부광원만을 이용하여 데이터를 디스플레이할 수 있도록 이루어진다. 하지만 외부광원이 없는 어두운 곳에서는 반사형 액정표시장치의 특성상 데이터를 볼 수 없다.The reflective liquid crystal display device can display data using only an external light source without a backlight assembly. However, in a dark place without external light sources, data cannot be viewed due to the characteristics of the reflective LCD.

이러한 문제점을 해결하기 위해 반사형 엘시디 패널의 전면에 외부광원용 프런트 라이트 어셈블리가 설치된다.To solve this problem, a front light assembly for an external light source is installed in front of the reflective LCD panel.

이렇게 반사형 엘시디 패널의 전면에 프런트 라이트 어셈블리가 설치됨으로써 어두운 곳에서 반사형 액정표시장치를 사용할 경우, 외부광원 역할을 위해 프런트 라이트 어셈블리가 구동된다.As the front light assembly is installed on the front of the reflective LCD panel, when the reflective liquid crystal display is used in a dark place, the front light assembly is driven to serve as an external light source.

하지만, 프런트 라이트 어셈블리의 구성 요소 가운데 하나인 엘이디(LED)들을 일렬로 조합하여 사용함으로써 화면의 균일성이 저하되는 문제점이 있다.However, there is a problem in that uniformity of the screen is lowered by combining LEDs, which are one of the components of the front light assembly, in a row.

따라서, 본 발명의 목적은 엘시디 패널의 화면에 대한 광의 균일성을 향상시킬 수 있도록 하는데 있다.Therefore, it is an object of the present invention to improve the uniformity of light with respect to the screen of the LCD panel.

본 발명의 다른 목적은 다음의 상세한 설명 및 첨부된 도면으로부터 보다 명확해질 것이다.Other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

이와 같은 목적을 달성하기 위해서 본 발명은 엘시디 패널의 전면에 위치하는 도광판과 도광판의 측면에 일측면이 일체로 형성되는 적어도 2면 이상의 반사면을 갖는 다각바와 다각바의 양단부에 각각 형성된 수납홈에 각각 설치되는 램프들을 포함하여 프런트 라이트 어셈블리를 구성할 수 있도록 한다.In order to achieve the above object, the present invention provides a light guide plate positioned at the front of the LCD panel and a receiving groove formed at both ends of the polygon bar and at least two ends of the polygon bar having at least two or more reflecting surfaces formed on one side of the light guide plate. The lamps, which are installed respectively, can be configured to configure the front light assembly.

이때, 다각바는 도광판의 대향되는 양측면에 위치할 수 있고, 다각바는 삼각바일 수 있으며, 램프는 엘이디일 수 있다.In this case, the polygonal bar may be located on opposite sides of the light guide plate, the polygonal bar may be a triangular bar, and the lamp may be an LED.

이하 첨부된 도면을 참조하여 본 발명의 기술에 따른 액정표시장치를 보다 상세하게 살펴보면 다음과 같다.Hereinafter, a liquid crystal display according to the technique of the present invention will be described in detail with reference to the accompanying drawings.

도 1을 참조하면, 액정표시장치는 데이터를 디스플레이하는 엘시디 패널(10), 엘시디 패널(10)의 데이터를 디스플레이하는 영역으로 광을 조사하는 프런트 라이트 어셈블리(12)를 포함하여 이루어진다.Referring to FIG. 1, a liquid crystal display includes an LCD panel 10 for displaying data and a front light assembly 12 for irradiating light to an area for displaying data of the LCD panel 10.

본 발명에 따르면, 프런트 라이트 어셈블리(12)는 엘시디 패널의 전면에 위치하는 OPI 타입(optical pattern inserting type)의 도광판(14)과 도광판(14)의 측면에 일측면이 일체로 형성되는 적어도 2면 이상의 반사면(16)을 갖는 다각바, 예를 들어, 절단면이 삼각형상을 이루는 삼각바(18)와 삼각바(18)의 양측단부에 형성되는 수납홈(20)에 각각 수납 설치되어 광을 발생시키는 엘이디(LED;22)와 같은 램프들을 포함하여 이루어진다.According to the present invention, the front light assembly 12 has at least two surfaces in which one side is integrally formed on the light guide plate 14 and the light guide plate 14 of the optical pattern inserting type (OPI type) located on the front of the LCD panel. A polygonal bar having the above-described reflective surface 16, for example, is provided in the triangular bar 18 having a cut surface triangular shape and the receiving grooves 20 formed at both end portions of the triangular bar 18 to receive light. Lamps, such as generating LEDs (LEDs) 22.

본 발명의 바람직한 실시예에 따르면, 삼각바(18)는 도광판(14)의 양측면에 각각 위치하여 엘시디 패널의 화면에 대한 광의 균일성(uniformity)을 향상시킬 수 있도록 한다. According to a preferred embodiment of the present invention, the triangular bars 18 are located on both sides of the light guide plate 14 so as to improve the uniformity of light with respect to the screen of the LCD panel.

여기서, 삼각바를 보다 상세히 살펴보면, 삼각바(18)는 일단면이 도광판(14)의 측면과 일체로 형성되고, 삼각바(18)의 일단면의 장길의 양측단에 각각 연결된 반사면들(16)은 직각으로 접하여 이루어진다.Here, when the triangular bar is described in more detail, the triangular bar 18 has one end surface integrally formed with the side surface of the light guide plate 14, and reflective surfaces 16 connected to both side ends of the long length of one end surface of the triangular bar 18, respectively. ) Is made at right angles.

이러한 구조를 갖는 프런트 라이트 어셈블리의 작용을 살펴보면, 엘이디(22)로부터 발생되는 광은 삼각바(18)의 반사면들(16)을 통해 반사되면서 삼각바(18)의 도광판(14)의 측면과 일체로 형성된 일단면을 통해 도광판(14)을 거쳐 엘시디 패널(10)의 전면에 조사된다.Looking at the operation of the front light assembly having such a structure, the light generated from the LED 22 is reflected through the reflecting surfaces 16 of the triangular bar 18 and the side of the light guide plate 14 of the triangular bar 18 It is irradiated to the front surface of the LCD panel 10 via the light guide plate 14 through one end surface formed integrally.

이렇게 반사면들을 통해 광이 삼각바 내부를 반복적으로 반사되면서 삼각바의 일단면을 통해 도광판을 거쳐 엘시디 패널의 전면으로 조사됨으로써, 엘시디 패널의 화면에 대한 광의 균일성이 향상된다.As the light is repeatedly reflected inside the triangular bar through the reflective surfaces, the light is irradiated to the front of the LCD panel through the light guide plate through one end of the triangular bar, thereby improving the uniformity of the light on the LCD panel screen.

한편, 본 발명에서는 다각바로 삼각바를 예로 들어 설명하였지만, 삼각바 이외에 오각바, 또는 육각바 등으로 변형 가능하다.On the other hand, in the present invention has been described by taking a triangular bar as an example of a polygonal bar, in addition to the triangular bar can be modified into a pentagonal bar, a hexagonal bar and the like.

또한, 본 발명에서는 상호 대향되는 도광판의 양측면에 삼각바를 각각 위치시켰지만, 도광판의 네 측면에 삼각바를 위치시킬 수도 있다.In addition, in the present invention, the triangular bars are positioned on both side surfaces of the light guide plate facing each other, but the triangular bars may be positioned on four sides of the light guide plate.

이상에서 살펴본 바와 같이 본 발명은 엘시디 패널의 전면에 위치하는 도광판의 측면에 일측면이 일체로 형성되는 적어도 2면 이상의 반사면을 갖는 다각바를 위치시키고, 다각바의 양측부에 각각 형성된 수납홈에 엘이디를 각각 설치함으로써 엘시디 패널에 대한 광의 균일성을 향상시키는 효과가 있다.As described above, the present invention locates a polygonal bar having at least two or more reflective surfaces in which one side is integrally formed on a side surface of a light guide plate positioned at the front of the LCD panel, and is provided in each of the receiving grooves formed at both sides of the polygonal bar. By providing each LED, there is an effect of improving the uniformity of light with respect to the LCD panel.

도 1은 본 발명의 기술에 따른 실시예에 의한 액정표시장치를 나타낸 사시도.1 is a perspective view showing a liquid crystal display device according to an embodiment of the present invention.

Claims (4)

데이터를 디스플레이하는 엘시디 패널; 및LCD panel for displaying data; And 상기 엘시디 패널의 상부에 배치되어 상기 엘시디 패널의 전면으로 광을 조사하는 프런트 라이트 어셈블리를 포함하고,A front light assembly disposed on an upper portion of the LCD panel to irradiate light to the front surface of the LCD panel; 상기 프런트 라이트 어셈블리는 The front light assembly is 상기 엘시디 패널의 전면에 위치하는 도광판;A light guide plate positioned on a front surface of the LCD panel; 상기 도광판의 측면에 일체로 형성되며, 적어도 2개 이상의 반사면을 구비한 다각바; 및A polygonal bar integrally formed on a side surface of the light guide plate and having at least two reflective surfaces; And 상기 다각바의 양단부에 각각 형성된 수납홈에 각각 설치되는 램프들을 포함하는 것을 특징으로 하는 액정표시장치.And lamps respectively installed in receiving grooves respectively formed at both ends of the polygon bar. 제 1 항에 있어서, 상기 다각바는 상기 도광판의 서로 마주보는 양측면에 형성되는 것을 특징으로 하는 액정표시장치.The liquid crystal display of claim 1, wherein the polygonal bars are formed on both side surfaces of the light guide plate facing each other. 제 1 항에 있어서, 상기 다각바는 삼각바인 것을 특징으로 하는 액정표시장치.The liquid crystal display of claim 1, wherein the polygonal bar is a triangular bar. 제 1 항에 있어서, 상기 램프는 엘이디(LED)인 것을 특징으로 하는 액정표시장치.The liquid crystal display of claim 1, wherein the lamp is an LED.
KR1019980056415A 1998-12-19 1998-12-19 LCD Display KR100539967B1 (en)

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KR100617023B1 (en) * 2000-07-20 2006-08-29 엘지.필립스 엘시디 주식회사 backlight assembly of LCD

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JPH06160636A (en) * 1992-11-19 1994-06-07 Hitachi Ltd Back light and liquid crystal display device
KR19980015239A (en) * 1996-08-20 1998-05-25 김광호 Direct-type backlight device
KR19980022603U (en) * 1996-10-28 1998-07-25 손욱 Surface light source device for liquid crystal display device
KR19980064632U (en) * 1997-04-30 1998-11-25 윤종용 Backlight Structure of LCD
KR19990009044A (en) * 1997-07-07 1999-02-05 윤종용 Backlight assembly structure

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06160636A (en) * 1992-11-19 1994-06-07 Hitachi Ltd Back light and liquid crystal display device
KR19980015239A (en) * 1996-08-20 1998-05-25 김광호 Direct-type backlight device
KR19980022603U (en) * 1996-10-28 1998-07-25 손욱 Surface light source device for liquid crystal display device
KR19980064632U (en) * 1997-04-30 1998-11-25 윤종용 Backlight Structure of LCD
KR19990009044A (en) * 1997-07-07 1999-02-05 윤종용 Backlight assembly structure

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