KR20090060761A - Display device - Google Patents

Display device Download PDF

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Publication number
KR20090060761A
KR20090060761A KR1020070127691A KR20070127691A KR20090060761A KR 20090060761 A KR20090060761 A KR 20090060761A KR 1020070127691 A KR1020070127691 A KR 1020070127691A KR 20070127691 A KR20070127691 A KR 20070127691A KR 20090060761 A KR20090060761 A KR 20090060761A
Authority
KR
South Korea
Prior art keywords
shock absorbing
light
display
optical sheet
absorbing member
Prior art date
Application number
KR1020070127691A
Other languages
Korean (ko)
Inventor
배성호
Original Assignee
엘지이노텍 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020070127691A priority Critical patent/KR20090060761A/en
Publication of KR20090060761A publication Critical patent/KR20090060761A/en

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Classifications

    • 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
    • G02B6/0025—Diffusing sheet or layer; Prismatic sheet or layer
    • 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
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/50—Protective arrangements
    • G02F2201/503—Arrangements improving the resistance to shock

Abstract

A display device is provided to reduce the amount of leaked light and improve the image quality. A display device comprises a light guide plate(220), an optical sheet(240), a display panel(300) and a shock absorbing member(400). The optical sheet is arranged on the light guide plate. The display panel is arranged on the optical sheet. The shock absorbing member is interposed between the optical sheet and display panel and blocks the light passing through it. The display panel comprises an effective display area where an image is displayed and a non-effective display area formed around the effective display area.

Description

Display {DISPLAY DEVICE}

An embodiment relates to a display device.

As information processing technology is developed, flat panel display devices such as LCD, AMOLED, and PDP are being used.

Such a flat panel display should be more resistant to external shocks.

Embodiments provide a display device that can withstand external physical shocks and has improved image quality.

The display device according to the embodiment includes a light guide plate, an optical sheet disposed on the light guide plate, a display panel disposed on the optical sheet, and an impact absorbing member interposed between the optical sheet and the display panel.

The display device according to the embodiment includes a shock absorbing member between the optical sheet and the display panel. Therefore, since the impact applied to the display panel can be absorbed by the shock absorbing member, the display device according to the embodiment is resistant to external physical shocks.

In addition, since the shock absorbing member may function as a light blocking member that blocks light, the shock absorbing member may block light leaking between the display panel and the optical sheet.

Therefore, the display device according to the embodiment can reduce light leakage and implement more improved image quality.

1 is an exploded perspective view of a liquid crystal display according to an embodiment. 2 is a cross-sectional view according to an embodiment.

1 and 2, the LCD includes a mold frame 100, a backlight assembly 200, a liquid crystal panel 300, a light shielding shock absorbing member 400, and a protective window 500.

The mold frame 100 has a rectangular frame shape. The mold frame 100 accommodates the backlight assembly 200, the liquid crystal panel 300, and the light shielding shock absorbing member 400 therein. Examples of the material that can be used as the mold frame 100 may include plastic or reinforced plastic.

The mold frame 100 includes a first frame 110 and a second frame 120. The first frame 110 has a rectangular frame shape and has an accommodating groove for accommodating the light emitting diodes 230 for generating light.

The second frame 120 forms a step on the first frame 110 and is disposed. The first frame 110 and the second frame 120 are integrally formed.

The backlight assembly 200 is disposed inside the mold frame 100, and the backlight assembly 200 emits light to the liquid crystal panel 300. The backlight assembly 200 includes a reflective sheet 210, a light guide plate 220, a light emitting diode 230, and an optical sheet 240.

The reflective sheet 210 is disposed inside the mold frame 100. The reflective sheet 210 reflects light generated from the light emitting diode 230 upwards.

The light guide plate 220 is disposed on the reflective sheet 210 and is disposed inside the mold frame 100. The light guide plate 220 receives light emitted from the light emitting diode 230 and emits light upward by reflection, refraction and scattering.

The light emitting diodes 230 are disposed on one side of the light guide plate 220. The light emitting diode 230 generates light, and emits the generated light toward the light guide plate 220. The light emitting diode 230 is disposed inside the receiving groove.

For example, the plurality of light emitting diodes 230 may be mounted on a light emitting unit substrate 320 electrically connected to a main substrate driving the liquid crystal panel 300.

The optical sheet 240 is disposed on the light guide plate 220, is disposed on the step, and supported by the first frame 110. The optical sheet 240 improves the characteristics of the light passing through. The optical sheet 240 includes, for example, at least one of a prism sheet, a diffusion sheet, and a polarizing sheet.

The liquid crystal panel 300 is disposed on the optical sheet 240 and is disposed inside the mold frame 100. In more detail, the liquid crystal panel 300 is disposed inside the second frame 120 and is supported by the first frame 110.

The liquid crystal panel 300 adjusts the intensity of light passing through for each pixel, which is a unit for displaying an image. The liquid crystal panel 300 includes a TFT substrate, a color filter substrate, and a liquid crystal layer interposed between the two substrates.

In addition, the liquid crystal panel 300 includes an effective display area EDR for displaying an image and an invalid display area NEDR formed around the effective display area EDR.

In addition, the liquid crystal display device is mounted on the liquid crystal panel 300 in a COG (chip on glass) method, and electrically connected to the driver IC 310 and the liquid crystal panel 300 driving the liquid crystal panel 300. It includes a connecting substrate 320.

The light blocking shock absorbing member 400 is interposed between the optical sheet 240 and the liquid crystal panel 300. The light blocking shock absorbing member 400 includes a light blocking shock absorbing layer 410, a first adhesive layer 420, and a second adhesive layer 430.

The light shielding shock absorbing layer 410 has elasticity and absorbs light. For example, the light shielding shock absorbing layer 410 includes a black dye or pigment and absorbs incident light.

The light-shielding shock absorbing layer 410 may be, for example, a nonwoven fabric or a sponge, and examples of the material used as the light-shielding shock absorbing layer 410 may include rubber-based resins and polyurethane-based resins.

The first adhesive layer 420 is disposed under the light shielding shock absorbing layer 410 and is bonded to the light shielding shock absorbing layer 410. In addition, the first adhesive layer 420 is bonded to the optical sheet 240, and also to the light emitting unit substrate 320.

The second adhesive layer 430 is disposed on the light shielding shock absorbing layer 410 and is bonded to the light shielding shock absorbing layer 410. In addition, the second adhesive layer 430 is bonded to the liquid crystal panel 300 or a polarizing sheet (not shown) adhered to the lower portion of the liquid crystal panel 300.

Since the light shielding shock absorbing layer 410 has elasticity, it absorbs a physical shock applied to the liquid crystal panel 300. That is, the light shielding shock absorbing member 400 absorbs the physical shock applied to the liquid crystal panel 300 to prevent the liquid crystal panel 300 from being broken.

In addition, the light shielding shock absorbing member 400 is disposed corresponding to the invalid display area NEDR. In more detail, the light shielding shock absorbing member 400 may be disposed at an edge of the invalid display area NEDR.

In this case, since the light blocking shock absorbing layer 410 absorbs light, the light emitted from the light guide plate 220 to the ineffective display area NEDR is blocked by the light blocking shock absorbing member 400. do.

In addition, the light shielding shock absorbing member 400 is adhered to the liquid crystal panel 300 and the optical sheet 240 by the first adhesive layer 420 and the second adhesive layer 430.

The protective window 500 is disposed on the liquid crystal panel 300 and is disposed on the mold frame 100. The protective window 500 is also adhered to the liquid crystal panel 300 by a transparent adhesive member or the like. In more detail, the protective window 500 is in close contact with the liquid crystal panel 300.

The protective window 500 protects the liquid crystal panel 300 and the like, and examples of the material that may be used as the protective window 500 may include tempered glass or acrylic.

By the light shielding shock absorbing member 400, the liquid crystal panel 300 is protected from physical shock. That is, the shock applied to the liquid crystal panel 300 is absorbed by the light shielding shock absorbing member 400 and is not transmitted to the mold frame 100, but reacts by the mold frame 100 or the light guide plate 220. This does not happen.

That is, if the light shielding shock absorbing member 400 is not included, the physical shock applied to the liquid crystal panel 300 is applied to the mold frame 100 or the light guide plate 220, and the applied shock is reacted again by reaction. The liquid crystal panel 300 is applied to the liquid crystal panel 300 to damage the liquid crystal panel 300.

Therefore, the light shielding shock absorbing member 400 prevents the liquid crystal panel 300 from being damaged.

In particular, when the protective window 500 and the liquid crystal panel 300 are in close contact with each other, many physical shocks are applied to the liquid crystal panel 300. Therefore, when the liquid crystal panel 300 and the protective window 500 are in close contact with each other, the liquid crystal panel 300 should be protected by the light shielding shock absorbing member 400.

Therefore, the liquid crystal display according to the embodiment is resistant to external physical impact and has improved durability.

In addition, the light emitted to the invalid display area NEDR is blocked by the light blocking shock absorbing member 400. Accordingly, the light blocking shock absorbing member 400 displays an image only in the effective display area EDR, prevents light leakage, and prevents an unwanted image from being displayed.

Thus, the liquid crystal display according to the embodiment has an improved image quality.

3 is a cross-sectional view of a light blocking shock absorbing member according to another embodiment. In the present embodiment, the light-shielding shock absorbing layer is further described with reference to the above-described embodiment.

Referring to FIG. 3, the light shielding shock absorbing layer 410 includes pores 411 inside. The pores 411 are empty spaces and are filled with gas. Therefore, the light shielding shock absorbing layer 410 has more improved elasticity by the pores 411 and can absorb more impact.

Therefore, the liquid crystal display device according to the present embodiment can absorb a larger physical shock and has more improved durability.

1 is an exploded perspective view of a liquid crystal display according to an embodiment. 2 is a cross-sectional view according to an embodiment.

3 is a cross-sectional view of a light blocking shock absorbing member according to another embodiment.

Claims (9)

Light guide plate; An optical sheet disposed on the light guide plate; A display panel disposed on the optical sheet; And And a shock absorbing member interposed between the optical sheet and the display panel. The display device of claim 1, wherein the shock absorbing member is attached to the display panel and the optical sheet. The display device of claim 1, wherein the impact absorbing member is a light blocking member that blocks light passing therethrough. 4. The display panel of claim 3, wherein the display panel includes an effective display area in which an image is displayed and an invalid display area formed around the effective display area, and the shock absorbing member is disposed corresponding to the invalid display area. Display. The display of claim 1, wherein the shock absorbing member comprises a first adhesive layer adhered to the optical sheet, a second adhesive layer adhered to the display panel, and a shock absorbing layer interposed between the first adhesive layer and the second adhesive layer. Device. The display device of claim 5, wherein the impact absorbing layer is a light blocking layer that blocks light. The display device of claim 5, wherein the impact absorbing layer comprises at least one of a nonwoven fabric and a sponge. The display device of claim 5, wherein the impact absorbing layer comprises pores. The display device of claim 1, further comprising a protective window disposed on the display panel and in close contact with the display panel.
KR1020070127691A 2007-12-10 2007-12-10 Display device KR20090060761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070127691A KR20090060761A (en) 2007-12-10 2007-12-10 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070127691A KR20090060761A (en) 2007-12-10 2007-12-10 Display device

Publications (1)

Publication Number Publication Date
KR20090060761A true KR20090060761A (en) 2009-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070127691A KR20090060761A (en) 2007-12-10 2007-12-10 Display device

Country Status (1)

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KR (1) KR20090060761A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102569347A (en) * 2010-12-03 2012-07-11 乐金显示有限公司 Organic light emitting display device and method for manufacturing the same
KR20140098348A (en) * 2013-01-31 2014-08-08 엘지디스플레이 주식회사 Back light unit and display device comprising the same
KR20150027603A (en) * 2013-09-04 2015-03-12 삼성디스플레이 주식회사 Method for manufacturing organic light emitting diode display
KR20150079231A (en) * 2013-12-31 2015-07-08 엘지디스플레이 주식회사 Liquid crystal display device for preventing foreign material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102569347A (en) * 2010-12-03 2012-07-11 乐金显示有限公司 Organic light emitting display device and method for manufacturing the same
KR20140098348A (en) * 2013-01-31 2014-08-08 엘지디스플레이 주식회사 Back light unit and display device comprising the same
KR20150027603A (en) * 2013-09-04 2015-03-12 삼성디스플레이 주식회사 Method for manufacturing organic light emitting diode display
KR20150079231A (en) * 2013-12-31 2015-07-08 엘지디스플레이 주식회사 Liquid crystal display device for preventing foreign material

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