KR20130024148A - Display apparatus - Google Patents

Display apparatus Download PDF

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Publication number
KR20130024148A
KR20130024148A KR1020110087404A KR20110087404A KR20130024148A KR 20130024148 A KR20130024148 A KR 20130024148A KR 1020110087404 A KR1020110087404 A KR 1020110087404A KR 20110087404 A KR20110087404 A KR 20110087404A KR 20130024148 A KR20130024148 A KR 20130024148A
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KR
South Korea
Prior art keywords
light emitting
light guide
guide plate
light
substrate
Prior art date
Application number
KR1020110087404A
Other languages
Korean (ko)
Inventor
박준석
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 KR1020110087404A priority Critical patent/KR20130024148A/en
Publication of KR20130024148A publication Critical patent/KR20130024148A/en

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    • 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
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0078—Side-by-side arrangements, e.g. for large area displays
    • 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
    • G02F1/133621—Illuminating devices providing coloured light

Abstract

PURPOSE: A display device is provided to selectively display information according to various viewing modes. CONSTITUTION: A first light emitting module(31) includes a first light emitting diode(33) and a first substrate(32). A second light emitting module(34) includes a second light emitting diode(36) and a second substrate(35). An optical sheet is formed on the first and second light guide plates. A display panel is formed on the optical sheet.

Description

DISPLAY APPARATUS

An embodiment relates to a display device.

As information processing technology develops, display devices such as LCD, PDP and AMOLED are widely used. Among these displays, a liquid crystal display (LCD) requires a backlight unit capable of generating light in order to display an image.

There are two types of backlights for liquid crystal display devices, an edge type method and a direct type method, depending on the position of the light source. The generated light is irradiated to the liquid crystal display panel through a transparent light guide plate disposed under the liquid crystal display panel. It has good uniformity of light, long life, and is advantageous for thinning a liquid crystal display device, and is generally used to irradiate light to medium and small size liquid crystal display panels. On the other hand, the direct type is a method of directly irradiating the entire surface of the liquid crystal display panel by placing a plurality of light sources under the liquid crystal display panel. This can ensure high luminance and is generally used to irradiate light onto large and medium sized liquid crystal display panels.

As a light source of a conventional liquid crystal display panel, a cold cathode fluorescent lamp was used, and research into using an LED having advantages of high lifespan, low power consumption, light weight, and thickness as a light source has been actively conducted. However, LED has a disadvantage in that a large amount of heat generation compared to the conventional fluorescent lamp. Due to the heat of the LED, the temperature inside the backlight assembly may be increased to reduce the reliability of the electronic circuit, and thermal stress may be generated in the parts or the case due to the internal temperature difference, causing deformation.

The embodiment provides a new backlight unit and a display device having the same.

The embodiment provides a backlight unit having a plurality of light guide plates having different sizes and a display device having the same.

The embodiment provides a backlight unit having a plurality of light emitting modules corresponding to a plurality of different light guide plates, and a display device having the same.

In an embodiment, a display device may include a bottom cover; A plurality of light guide plates including a first light guide plate and a second light guide plate disposed in the bottom cover; A first light emitting module corresponding to the first light guide plate and having a first substrate and a first light emitting diode arranged on the first substrate; A second light emitting module corresponding to the second light guide plate and having a second substrate and a second light emitting diode arranged on the second substrate; An optical sheet on the first and second light guide plates; And a display panel on the optical sheet, wherein the first LGP includes a length longer than a horizontal length of the second LGP, and the vertical lengths of the first and second LGPs include the same length.

The embodiment can provide a backlight unit capable of supporting various viewing modes.

The embodiment can provide a display device capable of selectively displaying information according to various viewing modes.

The embodiment can improve the reliability of the backlight unit and the display device with improved functions.

1 is an exploded perspective view of a display device according to an exemplary embodiment.
FIG. 2 is a diagram illustrating the light guide plate and the light emitting module of FIG. 1 according to the first embodiment. FIG.
FIG. 3 is a diagram illustrating a screen display area by the light guide plate of FIG. 2.
4 illustrates a light guide plate and a light emitting module according to a second embodiment.
FIG. 5 is a diagram illustrating a screen display area by the light guide plate of FIG. 4.
FIG. 6 is a diagram illustrating a method of adjusting a light emitting module according to the broadcast viewing mode of FIG. 2.
FIG. 7 is a diagram illustrating a method of adjusting a light emitting module according to the broadcast viewing mode of FIG. 4.

In the description of the embodiments, each substrate, frame, sheet, layer, or pattern is formed on or under the "on" or "under" of each substrate, frame, sheet, layer, or pattern. In the case of what is described as being to be understood, "on" and "under" include both "directly" or "indirectly" formed. . In addition, the upper or lower reference of each component is described with reference to the drawings. The size of each component in the drawings may be exaggerated for the sake of explanation and does not mean the size actually applied.

However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. Further, the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shapes and sizes of the elements in the drawings may be exaggerated for clarity of description, and the elements denoted by the same reference numerals in the drawings are the same elements. First, a semiconductor light emitting device according to an embodiment will be described in detail through various embodiments, and a light emitting device package and a backlight device using the semiconductor light emitting device will be described.

1 is an exploded perspective view illustrating a display device according to a first embodiment, and FIG. 2 is a view illustrating a light guide plate and a light emitting module of FIG. 1.

1 and 2, the display device 100 includes a display panel 10 on which an image is displayed and a backlight unit 20 that provides light to the display panel 10.

The backlight unit 20 may include a light guide plate 70 that provides a surface light source to the display panel 10, a reflective member 45 that reflects leakage light, and a light source in an edge region of the light guide plate 70. Light emitting modules 31 and 34, and a bottom cover 40 forming a bottom exterior of the display device 100. Although not illustrated, the display device 100 includes a panel supporter for supporting the display panel 10 from a lower side, and a top that forms a rim of the display device 100 and surrounds the circumference of the display panel 10. It may include a cover.

Although not shown in detail, the display panel 10 includes, for example, a lower substrate and an upper substrate coupled to each other to maintain a uniform cell gap, and a liquid crystal layer (not shown) interposed between the two substrates. Include. A plurality of gate lines and a plurality of data lines intersecting the plurality of gate lines may be formed on the lower substrate, and a thin film transistor (TFT) may be formed at an intersection of the gate line and the data line. Color filters may be formed on the upper substrate. The structure of the display panel 10 is not limited thereto, and the display panel 10 may have various structures. In another example, the lower substrate may include a color filter as well as a thin film transistor. In addition, the display panel 10 may be formed in various shapes according to a method of driving the liquid crystal layer. Although not shown, a gate driving printed circuit board (PCB) for supplying a scan signal to a gate line and a data driving printed circuit board (PCB) for supplying a data signal to a data line are provided at edges of the display panel 10. ) May be provided.

A polarizing film (not shown) may be disposed on at least one of the top and bottom of the display panel 10. An optical sheet 60 may be disposed below the display panel 10, and the optical sheet 60 may be included in the backlight unit 20, and may include at least one prism sheet or / and a diffusion sheet. have. The optical sheet 60 may be removed but is not limited thereto.

The diffusion sheet evenly spreads the incident light, and the diffused light may be focused onto the display panel by the prism sheet. Here, the prism sheet may be selectively configured using a horizontal or / and vertical prism sheet, one or more roughness reinforcing sheets, and the like. Type or number of the optical sheet 60 may be added or deleted within the technical scope of the embodiment, but is not limited thereto.

The light emitting modules 31 and 34 may be disposed inside the first side portion 42 of the bottom cover 40. The light emitting modules 31 and 34 may be disposed on different side parts of the bottom cover 40, for example, both side parts or all side parts, but are not limited thereto.

As shown in FIG. 2, the light emitting modules 31 and 34 include a first light emitting module 31 and a second light emitting module 34. The first light emitting module 31 includes a first substrate 32 and a plurality of first light emitting diodes 33 disposed on the first substrate 32. The second light emitting module 34 includes a second substrate 35 and a plurality of second light emitting diodes 36 disposed on the second substrate 35.

The first substrate 32 and the second substrate 34 are a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, and a FR-4 substrate. It may include.

Each of the first light emitting diode 33 and the second light emitting diode 36 is arranged along the light incident direction X of the light guide plate 70 at a predetermined pitch, and at least one color is, for example, white. At least one of red, green, and blue light is emitted. The embodiment may use a light emitting diode that emits light of at least one color or a combination of light emitting diodes that emit a plurality of colors. The first light emitting diode 33 and the second light emitting diode 36 may be arranged in at least one column, and may be arranged at regular intervals or at irregular intervals.

The first light emitting diode 33 and the second light emitting diode 36 may include an LED chip using a group III-V compound semiconductor and a molding member for protecting the LED chip. At least one kind of phosphor may be added to the molding member, but is not limited thereto. The LED chip may emit light in a visible light band or emit light in an ultraviolet band.

The first and second substrates 32 and 35 are arranged at predetermined intervals along the first direction X to correspond to the light incident portions of the light guide plate 70.

The first and second substrates 32 and 35 may be attached to the first side portion 42 of the bottom cover 40 by an adhesive member or may be attached to another heat dissipation plate, but are not limited thereto. . The adhesive member may include an insulating double-sided tape, but is not limited thereto.

The light guide plate 70 is made of a transparent material, and may include, for example, one of an acrylic resin series such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polycarbonate (PC), and polyethylene naphthalate (PEN) resin. Can be. The light guide plate 70 may be formed by an extrusion molding method, but is not limited thereto.

A reflective pattern (not shown) may be formed on the top or / and bottom of the light guide plate 70. The reflective pattern is formed of a predetermined pattern, for example, a dot pattern and / or a prism pattern, thereby reflecting or / and diffusely reflecting light, so that the light may be uniformly irradiated through the entire surface of the light guide plate 70. The lower surface of the light guide plate 70 may be formed in a reflective pattern, and the upper surface may be formed in a prism pattern. A scattering agent may be added to the inside of the light guide plate 70, but is not limited thereto.

The light guide plate 70 includes a first light guide plate 71 and a second light guide plate 72. The first light emitting diode 33 corresponds to at least one side of the first light guide plate 71, that is, the light incident part, and the second light emitting diode 36 is provided on at least one side of the second light guide plate 72. Corresponding.

The first and second LGPs 71 and 72 may be formed in a polygonal shape including an upper surface on which a surface light source is generated, a lower surface opposite to the upper surface, and at least four side surfaces.

The first LGP 71 receives light generated from the first light emitting diode 33 and emits the light to the surface light source, and the second LGP 72 receives light generated from the second light emitting diode 36. When it is received, it is emitted to the light source.

Reflecting members 45 may be provided below the first and second light guide plates 71 and 72. The reflective member 45 reflects light traveling downward of the first and second light guide plates 71 and 72 toward the display panel. The backlight unit 20 re-injects the light leaked to the lower portions of the first and second light guide plates 71 and 72 into the light guide plates 71 and 72 by the reflective member 45, thereby reducing the light efficiency. Problems such as deterioration, deterioration of optical properties and dark spots can be prevented. The reflective member 45 may be formed of, for example, PET, PC, or PVC resin, but is not limited thereto. The reflective member 45 may be a reflective layer formed on the bottom portion 41A of the bottom cover 40, but is not limited thereto.

The bottom cover 40 includes an accommodating part 41 having an open top, and the accommodating part 41 includes first and second light emitting modules 31 and 34, an optical sheet 60, and a light guide plate 70. 71 and 72 and the reflective member 45 may be accommodated. The reflective member 45, the light guide plates 70: 71, 72, and the optical sheet 60 may be sequentially stacked on the accommodating part 41 of the bottom cover 40, and the first and second light emitting modules may be stacked. 31 and 34 correspond to one side surface of the light guide plates 70, 71 and 72 at the first side surface 42 of the bottom cover 40.

The bottom cover 40 is a metal having high heat dissipation efficiency, for example, aluminum (Al), magnesium (Mg), zinc (Zn), titanium (Ti), tantalum (Ta), hafnium (Hf), and niobium (Nb). And optionally alloys thereof.

Referring to FIG. 2, the ratio of the width D1 to the length D6 of the first LGP 71 may be 6: 4, and the width D1 and the second LGP of the first LGP 71 may be described. The ratio of the horizontal length D3 and the vertical length D6 of the light guide plate 70, the sum of the horizontal length D2 of 72, may be 16: 9. Here, the gap between the first LGP 71 and the second LGP 72 may be in close contact with each other, so that the gaps may be negligible, such that the length D3 = D1 + D2.

The first substrate 32 of the first light emitting module 31 may correspond to the horizontal length D1 of the first light guide plate 71 and may be disposed longer than the length L2 of the second substrate 35. The first light emitting diodes 33 may be arranged in the side region of the first light guide plate 71 and may be arranged to be larger than the number of the second light emitting diodes 36.

The second substrate 35 of the second light emitting module 34 corresponds to the horizontal length D2 of the second light guide plate 72 and may be shorter than the length L1 of the first substrate 32. The second light emitting diodes 36 may be arranged in the side region of the second light guide plate 72 and may be arranged to be smaller than the number of the first light emitting diodes 33.

The first and second light emitting modules 31 and 34 provide separate light sources to the light guide plates 71 and 72 to display separate information through display panels disposed on the light guide plates 71 and 72. Can be.

2 and 3, the first display area A1 corresponding to the first LGP 71 has an aspect ratio of 6: 4, and the entire display area A1 + A2 corresponding to the LGP 70 is It can be provided in an aspect ratio of 16: 9. Here, the first display area A1 may be used as an image viewing area, and the second display area A2 may be used as an information display area for displaying information other than the received image.

The first light emitting diodes 33 of the first light emitting module 31 may be arranged in a mixture of high color reproducible LEDs, for example, red LEDs, green LEDs, and blue LEDs, which can watch broadcasts. The second light emitting diode 36 of the second light emitting module 34 may be implemented as a white LED.

The first light emitting module 31 and the second light emitting module 34 may be driven separately to provide light sources corresponding to different display areas A1 and A2.

As shown in FIG. 6, when a signal is received (S11), the viewing mode is checked (S12), and in the first mode, the first light emitting module 31 is turned on to provide a light source for the first display area A1. In operation S13, the second light emitting module 34 is turned on to provide a light source for the second display area A2 in operation S14. Here, the first and second display areas A1 and A2 may be displayed at the same time or may be displayed for each of the display areas A1 and A2, but embodiments are not limited thereto.

4 and 5 show a second embodiment.

Referring to FIG. 4, the light guide plate 70 is divided into two or more. The light guide plate 70 may include, for example, a first light guide plate 71, a second light guide plate 72, and a third light guide plate 73. The first LGP 71 may be formed to have a length D1 greater than the horizontal lengths D2 and D4 of the second and third LGPs 72 and 73, and the first to third LGPs 71,. The vertical lengths D6 of 72 and 73 may all have the same length.

The light emitting module includes a first light emitting module 31, a second light emitting module 34, and a third light emitting module 37. The first light emitting module 31 is disposed between the second light emitting module 34 and the third light emitting module 37, and the plurality of first light emitting modules 31 and the plurality of first light emitting modules 31 are disposed on the first substrate 32. The first light emitting diode 33 is included. The second light emitting module 34 includes a second substrate 35 and a plurality of second light emitting diodes 36 disposed on the second substrate 35. The third light emitting module 37 includes a third substrate 38 and a plurality of third light emitting diodes 39 disposed on the third substrate 38. Among the first to third light emitting diodes 33, 36, and 39, the first light emitting diode 33 may be used by mixing a red LED, a green LED, and a blue LED for high color reproducibility. The light emitting diodes 36 and 39 may be implemented as white LEDs.

The first light emitting module 31 corresponds to the side of the first light guide plate 71, the second light emitting module 34 corresponds to the side of the second light guide plate 72, and the third light emitting module 37 The third light guide plate 73 is disposed to correspond to the side surface of the third light guide plate 73.

The first substrate 32 may correspond to the horizontal length D1 of the first LGP 71 and may be longer than the length L2 of the second substrate 35. The first light emitting diode 33 is disposed in the side region of the first light guide plate 71 and may be arranged to be larger than the number of the second light emitting diodes 36.

The second substrate 35 of the second light emitting module 34 corresponds to the horizontal length D2 of the second light guide plate 72 and may be shorter than the length L1 of the first substrate 32. The second light emitting diode 36 may be disposed in a side region of the second light guide plate 72 and may be arranged to be smaller than the number of the first light emitting diodes 33.

The third substrate 38 of the third light emitting module 37 corresponds to the horizontal length D4 of the third light guide plate 73 and has a length L3 shorter than the length L1 of the first substrate 32. Can be arranged. The third light emitting diode 39 may be disposed in the side region of the third light guide plate 73 and arranged less than the number of the first light emitting diodes 33.

As shown in FIGS. 4 and 5, the first to third light emitting modules 31, 34, and 37 respectively provide separate light sources to the light guide plates 71, 72, and 73, respectively. A separate image may be displayed through the display area of the display panel disposed on the display panel.

The first light emitting module 31 provides a light source required for the first display area B1 through the first light guide plate 71, and the second light emitting module 34 provides a second display area through the second light guide plate 72. A light source required for (B2) is provided, and the third light emitting module 37 provides a light source for the third display area B3 through the third light guide plate 73.

The first display area B1 corresponding to the first LGP 71 may be provided in a screen ratio D1: D6 of 6: 4 and used in a general broadcast (eg, TV) viewing mode.

The display areas B1 + B2 corresponding to the first and second light guide plates 71 and 72 may be provided in a 16: 9 aspect ratio D3: D6 and may be used for smart broadcasting. Here, the first display area B1 may be used as a viewing area, and the second display area B2 may be used as an information search area.

The display areas B1 + B2 + B3 corresponding to the first to third light guide plates 71, 72, and 73 may be provided in a 22: 9 aspect ratio D5: D6 and may be used for movie watching.

As shown in FIG. 7, when a signal is received (S21), the viewing mode is checked (S22), and in the first mode, the first light emitting module 31 is turned on to output a light source through the display area of the broadcasting mode ( S23). In the second mode, the first and second light emitting modules 31 and 43 are turned on to output a light source through the smart broadcasting display area (S24). In the third mode, the first to third light emitting modules 31, 34, and 37 are turned on to output a light source through the display area of the movie mode (S25).

The light emitting module according to the embodiment may be applied not only to a backlight unit such as a portable terminal, a computer, but also to a lighting device such as a lighting lamp, a traffic light, a vehicle headlight, an electric sign, a street lamp, and the like, but is not limited thereto. In addition, the light guide plate may not be disposed in the direct type light emitting module, but is not limited thereto. In addition, a light transmitting material such as a lens or glass may be disposed on the light emitting module, but is not limited thereto.

It is not intended to be limited to the above-described embodiments and the accompanying drawings, but is limited by the appended claims. Therefore, it will be apparent to those skilled in the art that various forms of substitution, modification, and alteration are possible without departing from the technical spirit of the present invention described in the claims, and the appended claims. Will belong to the technical spirit described in.

Reference Signs List 100: display device, 10: display panel, 20: backlight unit, 31, 34, 37: light emitting module, 32, 35, 38: substrate, 33, 36, 39: light emitting diode, 40: bottom cover, 45: reflective member , 60: optical sheet, 70,71,72,73: light guide plate

Claims (9)

Bottom cover;
A plurality of light guide plates including a first light guide plate and a second light guide plate disposed in the bottom cover;
A first light emitting module corresponding to the first light guide plate and having a first substrate and a first light emitting diode arranged on the first substrate;
A second light emitting module corresponding to the second light guide plate and having a second substrate and a second light emitting diode arranged on the second substrate;
An optical sheet on the first and second light guide plates; And
A display panel on the optical sheet,
The first LGP includes a length longer than a horizontal length of the second LGP, and the vertical lengths of the first and second LGPs include the same length. The display device of claim 1, wherein the first light emitting diode comprises a red LED, a green LED, and a blue LED. The display device of claim 2, wherein the second light emitting diode is a plurality of white LEDs. The display device of claim 3, wherein the first light emitting diode is arranged in a greater number than the number of the second light emitting diodes. The light guide plate of claim 1, wherein the plurality of light guide plates include a third light guide plate in the bottom cover, wherein the first light guide plate is disposed between the second light guide plate and the third light guide plate,
A third light emitting module corresponding to the third light guide plate and having a third substrate and a third light emitting diode arranged on the third substrate;
The first light guide plate is longer than the horizontal length of the third light guide plate,
The vertical length of the first to third light guide plates is the same. The display device of claim 5, wherein the first to third light emitting modules are individually driven according to a viewing mode. The display device of claim 5, wherein a ratio of a horizontal length to a vertical length of the first and second light guide plates is 16: 9. The display device of claim 5, wherein the ratio of the horizontal length to the vertical length of the first to third light guide plates is 22: 9. The display device of claim 5, wherein a ratio of a width length to a length length of the first light guide plate is 6: 4.
KR1020110087404A 2011-08-30 2011-08-30 Display apparatus KR20130024148A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160045235A (en) * 2014-10-16 2016-04-27 엘지디스플레이 주식회사 Light guide plate for liquid crystal display apparatus, backlight unit and liquid crystal display apparatus comprising the same
KR20160079565A (en) * 2014-12-26 2016-07-06 엘지디스플레이 주식회사 Display device for displying 2-dimension and 3-dimension images
CN107526209A (en) * 2016-12-15 2017-12-29 深圳市德仓科技有限公司 A kind of backlight module and its display device
WO2020000514A1 (en) * 2018-06-27 2020-01-02 朗昭创新控股（深圳）有限公司 Backlight module
WO2020064628A1 (en) * 2018-09-25 2020-04-02 Continental Automotive Gmbh Display comprising an lcd having backlighting means
KR102225444B1 (en) * 2020-12-22 2021-03-09 주식회사 베이스원 코퍼레이션 All In One Kiosk

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160045235A (en) * 2014-10-16 2016-04-27 엘지디스플레이 주식회사 Light guide plate for liquid crystal display apparatus, backlight unit and liquid crystal display apparatus comprising the same
KR20160079565A (en) * 2014-12-26 2016-07-06 엘지디스플레이 주식회사 Display device for displying 2-dimension and 3-dimension images
CN107526209A (en) * 2016-12-15 2017-12-29 深圳市德仓科技有限公司 A kind of backlight module and its display device
WO2020000514A1 (en) * 2018-06-27 2020-01-02 朗昭创新控股（深圳）有限公司 Backlight module
WO2020064628A1 (en) * 2018-09-25 2020-04-02 Continental Automotive Gmbh Display comprising an lcd having backlighting means
KR102225444B1 (en) * 2020-12-22 2021-03-09 주식회사 베이스원 코퍼레이션 All In One Kiosk

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