KR100716745B1 - a frontlight unit light guide plate - Google Patents

a frontlight unit light guide plate Download PDF

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Publication number
KR100716745B1
KR100716745B1 KR1020040072877A KR20040072877A KR100716745B1 KR 100716745 B1 KR100716745 B1 KR 100716745B1 KR 1020040072877 A KR1020040072877 A KR 1020040072877A KR 20040072877 A KR20040072877 A KR 20040072877A KR 100716745 B1 KR100716745 B1 KR 100716745B1
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South Korea
Prior art keywords
light guide
guide plate
light
prism pattern
long hole
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KR1020040072877A
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Korean (ko)
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KR20060024048A (en
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권오대
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레이젠 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
    • G02F1/133524—Light-guides, e.g. fibre-optic bundles, louvered or jalousie light-guides
    • 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
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
    • 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
    • G02F1/133504—Diffusing, scattering, diffracting elements
    • 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
    • G02F1/1336—Illuminating devices
    • G02F1/133616—Front illuminating devices

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

Abstract

본 발명은 발광다이오드나 냉음극형광램프를 광원으로 하는 프론트라이트 유니트용 도광판에 관한 것으로, 특히 도광판과 라이트가이드 바가 일체형으로 형성되게하여 부품 수를 줄이고, 이로 인하여 프론트라이트 유니트를 조립하는 공정도 줄여 생산성을 향상시킬 수 있도록한 도광판에 관한 것이다.The present invention relates to a light guide plate for a front light unit using a light emitting diode or a cold cathode fluorescent lamp as a light source, and in particular, the light guide plate and the light guide bar are integrally formed to reduce the number of parts, thereby reducing the process of assembling the front light unit. The present invention relates to a light guide plate capable of improving productivity.

도광판, 프리즘패턴, 장공, 마이크로블라스팅, 요철, 확산시트, 프리즘시트 Light guide plate, prism pattern, hole, micro blasting, irregularities, diffusion sheet, prism sheet

Description

프론트라이트 유니트용 도광판{a frontlight unit light guide plate}Light guide plate for frontlight unit {a frontlight unit light guide plate}

도 1은 본 발명에 따른 반사형 액정표시장치용 프론트라이트 유닛의 전체 구1 is an entire sphere of a front light unit for a reflective liquid crystal display device according to the present invention;

성도             Saint

도 2는 본 발명에 따른 프론트라이트 유닛을 분리한 사시도2 is a perspective view of the front light unit separated from the present invention

도 3은 도 2에서 본 발명을 발췌한 평면도3 is a plan view extracting the present invention from FIG.

도 4는 도 3의 'A - A'선의 단면도4 is a cross-sectional view taken along the line 'A-A' of FIG.

도 5는 도 3의 "가" 부분을 발췌 확대한 또다른 실시예시도로서 장공내부에 FIG. 5 is a view showing another example of enlarged portion “a” of FIG. 3 as an example.

확산시트가 삽입된 상태의 부분 평면도              Partial plan view with diffuser sheet inserted

도 6은 도 3의 "가" 부분을 발췌 확대한 또다른 실시예시도로서 장공내부에 6 is a view showing another example of enlarged portion “A” of FIG.

확산시트와 프리즘 시트가 삽입된 상태의 부분 평면도             Partial plan view with diffusion sheet and prism sheet inserted

도 7은 도 3의 "가" 부분을 발췌 확대한 또다른 실시예시도로서 장공의 양측Figure 7 is another embodiment of the enlarged excerpt "A" portion of Figure 3 both sides of the long hole

면부에 마이크로블라스팅 처리하여 미세한 요철이 형성된 것을 나타              Micro blasting treatment on the surface to show that fine irregularities are formed

낸 상태의 부분 확대 평면도              Loupe plan view

도 8은 도 3의 "가" 부분을 발췌 확대한 또다른 실시예시도로서 장공의 양측FIG. 8 is a further exemplary view showing an enlarged excerpt of the "A" part of FIG.

면부에 요철부가 형성되고 장공내부에 확산시트가 결합된 상태의 평              Flat surface with irregularities formed on the surface and diffusion sheet bonded inside the long hole

면도             shave

도 9는 종래의 프론트 라이트 유니트를 분리한 사시도       9 is a perspective view of the conventional front light unit separated

*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10 : 도광판 11 : 프리즘 패턴10 light guide plate 11: prism pattern

12 : 장공 13 : 요철12: long hole 13: unevenness

14 : 확산시트 15 : 프리즘 시트14 diffusion sheet 15 prism sheet

16 : 반사시트 100 : 반사판16: reflection sheet 100: reflection plate

110 : 액정패널 120 : 도광판110: liquid crystal panel 120: light guide plate

130 : 광원(LED) 140 : 프론트라이트 가이드 바130: light source (LED) 140: front light guide bar

150 : 하우징 160 : 연성회로기판 150 housing 160 flexible circuit board

본 발명은 발광다이오드와 냉음극형광램프를 광원으로 하는 프론트라이트 유니트용 도광판에 관한 것으로, 특히 도광판과 라이트 가이드 바가 일체형으로 형성되게하여 부품 수를 줄이고 이로 인하여 프론트라이트 유니트를 조립하는 공정도 줄여 생산성을 향상시킬 수 있도록한 도광판에 관한 것이다.The present invention relates to a light guide plate for a front light unit using a light emitting diode and a cold cathode fluorescent lamp as a light source. In particular, the light guide plate and the light guide bar are integrally formed to reduce the number of parts, thereby reducing the process of assembling the front light unit. It relates to a light guide plate to improve the.

일반적으로 반사형액정표시장치는 광학적 성질이 변하는 전기광학물질을 이용한 것으로, 낮은 소비전력으로 동작할 수 있는 것으로 휴대전화기, 휴대단말기(PDA)와 같은 휴대전자기기에 많이 이용되고 있는데 이러한 반사형 액정표시장치는 외부광원이 있는 곳에서는 별도의 광원없이도 디스플레이 영상을 볼 수 있으며, 외부 광원이 없는 곳에서도 프론트라이트 유닛의 조명에 의해 디스플레이 영상을 볼 수 있다.In general, the reflective liquid crystal display device uses an electro-optic material that changes optical properties, and can be operated with low power consumption. It is widely used in portable electronic devices such as mobile phones and portable terminals (PDAs). The display device can see the display image without a separate light source in the presence of an external light source, and can also view the display image by the illumination of the front light unit even in the absence of an external light source.

이에 사용되는 액정디스플레이의 구조는 도 9에 도시된 바와같이 상부면에 프리즘 패턴이 형성된 도광판(120)의 좌,우,후면에 반사시트(16)가 부착되고 상기 도광판(120)의 전면부에는 확산시트(14)를 위치시켜 놓은 다음 광원(LED)(130)을 도광판(LGP)(120)으로 균일하게 출사시켜 주기 위하여 필요로 하는 라이트 가이드 바(140)로 밀착시킨 다음 하우징(150) 및 광원(LED)(130)이 설치된 연성회로기판(FPC)(160)순으로 결합되는 구조인데 이것은 도광판(120)과 라이트 가이드 바(140)를 각각 사출 성형하여 생산하여야 하므로 각각의 금형 제작 비용이 많이 드는 문제점이 있었고 도광판과 라이트 가이드 바 및 확산시트 등 각각의 부품을 결합하여야 하므로 프론트라이트 어셈블리까지 하는데는 공정수가 많아지고 이로 인하여 생산성의 저하 및 조립 비용이 많이 들어 생산원가가 높아지는 문제점이 있었다.As shown in FIG. 9, the structure of the liquid crystal display used is a reflective sheet 16 attached to the left, right, and rear surfaces of the light guide plate 120 having a prism pattern formed thereon, and a front portion of the light guide plate 120. After placing the diffusion sheet 14, the light source (LED) 130 is brought into close contact with the light guide bar 140 needed to uniformly output the light guide plate (LGP) 120, and then the housing 150 and The light source (LED) 130 is installed in the order of the flexible circuit board (FPC) 160 is installed, which is to be produced by injection molding the light guide plate 120 and the light guide bar 140, respectively, each mold manufacturing cost There were many problems, and each part such as the light guide plate, the light guide bar, and the diffusion sheet had to be combined. Therefore, the number of processes required for the assembly of the front light was increased, resulting in high productivity and assembly cost. There is a problem of cost increase.

상기의 문제점을 해결하기 위하여 본 발명은, 프론트 라이트 어셈블리로 조립하는데 부품 수를 줄이고 조립 공정수도 줄여 생산성 향상과 제조 원가 절감을 이루는데 그 목적을 둔 것이다.In order to solve the above problems, the present invention is to assemble the front light assembly to reduce the number of parts and to reduce the number of assembling process to achieve the productivity and the manufacturing cost reduction.

상기 목적을 달성하기 위하여, 본 발명은 도광판의 입면부에 점광원을 면광원으로 변경할 수 있게 프리즘 패턴을 형성하고 상기 전면부의 프리즘 패턴(11)으로부터 도광판(10)의 상부에 형성된 프리즘 패턴 시작점 사이에 횡방향으로 시트가 삽입될 수 있는 사각형의 장공을 형성한 도광판을 제공하므로서 그 목적은 달성된다.In order to achieve the above object, the present invention forms a prism pattern to change the point light source to the surface light source on the front surface of the light guide plate and between the prism pattern start point formed on the light guide plate 10 from the prism pattern 11 of the front part. The object is achieved by providing a light guide plate having a rectangular long hole into which a sheet can be inserted in the transverse direction.

이하 첨부된 도면에 의하여 본 발명의 바람직한 실시예에 대하여 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 1 내지 도 2에 도시된 바와같이, 하부에 반사판(100)이 설치된 액정패널(110)과, 액정패널(110) 상부에 도광판(10)이 설치되고 도광판(10)의 일측 전방에 광원(130)이 설치되어 주위가 어두운곳에서도 화면을 볼 수 있도록한 반사형 액정표시장치의 도광판에 있어서,As shown in FIGS. 1 and 2, the liquid crystal panel 110 having the reflective plate 100 installed thereon, the light guide plate 10 disposed on the liquid crystal panel 110, and a light source in front of one side of the light guide plate 10. In the light guide plate of the reflection type liquid crystal display device installed 130 so that the screen can be seen in a dark place,

상기 도광판(10)은 상부면에 프리즘 패턴이 형성되고 좌,우,후부면에 반사시트(16)가 부착되고 상기 도광판(10)의 전면부에는 광원에서 출사되는 광량을 균등하게 도광판의 전체면으로 확산시킬 수 있게 프리즘 패턴(11)을 형성하며, 상기 전면부의 프리즘 패턴(11)으로부터 도광판(10)의 상부에 형성된 프리즘 패턴 시작점 사이에 횡방향으로 시트가 삽입될 수 있는 사각형의 장공(12)을 형성한 구성이다.The light guide plate 10 has a prism pattern formed on an upper surface thereof, and a reflective sheet 16 is attached to left, right, and rear surfaces thereof, and an entire surface of the light guide plate is evenly distributed on the front portion of the light guide plate 10. The prism pattern 11 is formed so as to be diffused, and the rectangular long hole 12 into which the sheet can be inserted in the transverse direction between the prism pattern 11 of the front part and the starting point of the prism pattern formed on the light guide plate 10. ) Is formed.

상기의 장공(12)에는 도 5에 도시된 바와같이 광원에서 출사되는 광량을 도광판 전체에 확산되도록 확산시트(14)를 삽입 고정시킬 수 있게 한 구성이다As shown in FIG. 5, the long hole 12 is configured to insert and fix the diffusion sheet 14 so that the amount of light emitted from the light source is diffused to the entire light guide plate.

한편, 도 6 내지 도 8은 본 발명의 또다른 실시예시도로서, 도 6에 도시된 것은 본 발명의 도광판(10)에 형성된 장공(12) 내부에 확산시트(14)와 프리즘 시트(15)를 함께 삽입하여 고휘도와 균일도를 내도록 한것이고, 도 7에 도시된 것은 본 발명의 도광판(10)에 형성된 장공(12)의 측면을 마이크로블라스팅 처리하여 미세한 요철(13)이 형성되게 하여 확산시트의 작용과 마찬가지로 광원에서 출사되는 광량이 장공의 측벽에 형성된 요철부를 통과하면서 광량이 도광판의 전체면에 고르게 확산되도록 한 것이다.6 to 8 are still another exemplary embodiment of the present invention. In FIG. 6, the diffusion sheet 14 and the prism sheet 15 are formed in the long hole 12 formed in the light guide plate 10 of the present invention. Inserted together to give a high brightness and uniformity, shown in Figure 7 is a microblasting side of the long hole 12 formed in the light guide plate 10 of the present invention to form a fine concavo-convex 13 to form the action of the diffusion sheet Similarly, while the light emitted from the light source passes through the uneven portion formed on the sidewall of the long hole, the light is evenly spread on the entire surface of the light guide plate.

또한 도 8에 도시된 바와같이 상기 도광판(10)의 장공(12) 측면에 요철부(13)가 형성되고 장공(12)내부에 확산시트(14)를 삽입 고정되게한 것으로서 광원에서 출사되는 광량이 장공의 측벽에 형성된 요철부와 확산시트를 통과하면서 광량이 도광판의 전체에 고르게 확산되어 높은 균일도를 달성하는 것이다. In addition, as shown in FIG. 8, the uneven portion 13 is formed at the side of the long hole 12 of the light guide plate 10, and the diffusion sheet 14 is inserted into and fixed to the inside of the long hole 12. While passing through the uneven portion and the diffusion sheet formed on the side wall of the long hole, the light amount is evenly spread throughout the light guide plate to achieve high uniformity.

이와같이 본 발명에 따른 프론트라이트 유닛은 도광판(10)의 입면부에 프리즘 패턴을 형성토록하여 광원으로 부터 발생된 광이 종래와 같이 라이트 가이드 바를 경유하지 않고 바로 도광판으로 입사된다. As described above, the front light unit according to the present invention allows the prism pattern to be formed on the surface of the light guide plate 10 so that the light generated from the light source enters the light guide plate directly without passing through the light guide bar.

따라서 라이트 가이드 바의 공정 단계가 생략됨으로써 광손실이 적어지고, 광효율을 높일 수 있다.Therefore, the light loss is reduced and the light efficiency can be improved by eliminating the process step of the light guide bar.

이상 설명한 내용을 통해 당업자라면 본 발명의 기술사상을 이탈하지 아니하는 범위에서 다양한 변경 및 수정이 가능한 것으로서 본 발명의 기술적 범위는 명세서의 상세한 설명에 기재된 내용으로 한정되는 것이 아니라 특허청구의 범위에 의해 정해져야만 할 것이다.Various changes and modifications can be made by those skilled in the art through the above description without departing from the technical spirit of the present invention, and the technical scope of the present invention is not limited to the contents described in the detailed description of the specification, but according to the claims. It must be decided.

상술한 바와 같이, 본 발명은 도광판의 전면부에 프리즘 패턴을 형성케하고 소정의 거리를 두고 확산시트가 삽입될 수 있는 장공을 형성되게 하므로서 종래의 프론트라이트 유닛에서 사용되는 라이트 가이드 바를 생략할 수 있으므로 이에 따른 금형 제작비를 절감할 수 있고 또한 부품 수가 줄어들므로서 조립공정 수도 적어지므로 프론트 라이트 어셈블리의 생산성 향상을 가져오는 효과가 있는 것이다. As described above, the present invention can omit the light guide bar used in the conventional front light unit by forming a prism pattern on the front surface of the light guide plate and forming a long hole through which a diffusion sheet can be inserted at a predetermined distance. Therefore, it is possible to reduce the manufacturing cost of the mold and the number of parts is reduced, thereby reducing the number of parts, thereby increasing the productivity of the front light assembly.

또한, 본 발명은 도광판의 장공에 확산시트, 프리즘 시트를 동시에 삽입하거 나 또는 장공의 측면부에 요철이 형성되도록 하여 그대로 이용할 경우에는 확산시트의 기능인 광원을 확산시키는 기능을 하게 되므로 확산시트의 절감 효과도 있을 뿐만 아니라 도광판의 전면으로 고휘도의 광량을 출사하게 되므로 품질 향상을 가져다주는 효과도 있게 한 것이다.In addition, when the diffusion sheet, prism sheet is inserted into the hole of the light guide plate at the same time or irregularities are formed on the side surface of the hole, the present invention functions to diffuse the light source which is a function of the diffusion sheet. In addition to the high light intensity is emitted to the front of the light guide plate, so that the effect of bringing quality improvement.

Claims (4)

삭제delete 삭제delete 하부에 반사판(100)이 설치된 액정패널(110)과, 액정패널(110) 상부에 프리즘 패턴을 가진 도광판(120)이 설치되고 도광판(120)의 일측 전방에 광원(130)이 설치되어 액정패널에 디스플레이되는 화면을 어두운 곳에서도 볼 수 있도록한 반사형 액정표시장치의 도광판에 있어서,A liquid crystal panel 110 having a reflector plate 100 installed below, a light guide plate 120 having a prism pattern on the liquid crystal panel 110, and a light source 130 installed in front of one side of the light guide plate 120 are provided. In the light guide plate of the reflection type liquid crystal display device so that the screen displayed on the screen can be seen in the dark, 도광판(10)은 전면부에 프리즘 패턴(11)을 형성하고 전면부의 프리즘 패턴(11)으로부터 도광판(10)의 상부에 형성된 프리즘 패턴 시작점 사이에 횡방향으로 시트가 삽입될 수 있는 사각형의 장공(12)을 형성하되 상기 장공(12) 측면에는 마이크로 블라스팅 처리하여 미세한 요철(13)이 형성되는 한편, 상기 도광판(10)의 장공(12) 사이에 확산시트(14)를 삽입하여 고정되게 함을 특징으로하는 프론트라이트 유니트용 도광판The light guide plate 10 forms a prism pattern 11 on the front surface and has a rectangular long hole through which a sheet can be inserted in the transverse direction between the prism pattern 11 of the front surface and the starting point of the prism pattern formed on the light guide plate 10. 12) to form a fine unevenness 13 by micro blasting on the side of the long hole 12, while inserting the diffusion sheet 14 between the long hole 12 of the light guide plate 10 to be fixed. Light guide plate for front light unit 하부에 반사판(100)이 설치된 액정패널(110)과, 액정패널(110) 상부에 프리즘 패턴을 가진 도광판(120)이 설치되고 도광판(120)의 일측 전방에 광원(130)이 설치되어 액정패널에 디스플레이되는 화면을 어두운 곳에서도 볼 수 있도록한 반사형 액정표시장치의 도광판에 있어서,A liquid crystal panel 110 having a reflector plate 100 installed below, a light guide plate 120 having a prism pattern on the liquid crystal panel 110, and a light source 130 installed in front of one side of the light guide plate 120 are provided. In the light guide plate of the reflection type liquid crystal display device so that the screen displayed on the screen can be seen in the dark, 도광판(10)은 전면부에 프리즘 패턴(11)을 형성하고 전면부의 프리즘 패턴(11)으로부터 도광판(10)의 상부에 형성된 프리즘 패턴 시작점 사이에 횡방향으로 시트가 삽입될 수 있는 사각형의 장공(12)을 형성하는 한편, 상기 도광판(10)의 장공(12)내에는 확산시트(14)와 프리즘 시트(15)를 동시에 삽입하여 고정되게 함을 특징으로하는 프론트라이트 유니트용 도광판 The light guide plate 10 forms a prism pattern 11 on the front surface and has a rectangular long hole through which a sheet can be inserted in the transverse direction between the prism pattern 11 of the front surface and the starting point of the prism pattern formed on the light guide plate 10. 12) and a light guide plate for the front light unit, characterized in that the diffusion sheet 14 and the prism sheet 15 are simultaneously inserted into and fixed in the long hole 12 of the light guide plate 10.
KR1020040072877A 2004-09-13 2004-09-13 a frontlight unit light guide plate KR100716745B1 (en)

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Publication number Priority date Publication date Assignee Title
KR20010062552A (en) * 1999-12-28 2001-07-07 추후제출 Lighting apparatus
JP2002367420A (en) 2001-06-05 2002-12-20 Takagi Seiko Corp Lighting system for display
JP2003331625A (en) 2002-05-13 2003-11-21 Alps Electric Co Ltd Lighting device and liquid crystal display device
JP2004158452A (en) 2002-11-04 2004-06-03 Samsung Electronics Co Ltd Backlight unit

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010062552A (en) * 1999-12-28 2001-07-07 추후제출 Lighting apparatus
JP2002367420A (en) 2001-06-05 2002-12-20 Takagi Seiko Corp Lighting system for display
JP2003331625A (en) 2002-05-13 2003-11-21 Alps Electric Co Ltd Lighting device and liquid crystal display device
JP2004158452A (en) 2002-11-04 2004-06-03 Samsung Electronics Co Ltd Backlight unit

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