KR20160033833A - Display device - Google Patents

Display device Download PDF

Info

Publication number
KR20160033833A
KR20160033833A KR1020140124268A KR20140124268A KR20160033833A KR 20160033833 A KR20160033833 A KR 20160033833A KR 1020140124268 A KR1020140124268 A KR 1020140124268A KR 20140124268 A KR20140124268 A KR 20140124268A KR 20160033833 A KR20160033833 A KR 20160033833A
Authority
KR
South Korea
Prior art keywords
refractive index
layer
core layer
light
display panel
Prior art date
Application number
KR1020140124268A
Other languages
Korean (ko)
Inventor
박찬재
남석현
Original Assignee
삼성디스플레이 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 삼성디스플레이 주식회사 filed Critical 삼성디스플레이 주식회사
Priority to KR1020140124268A priority Critical patent/KR20160033833A/en
Publication of KR20160033833A publication Critical patent/KR20160033833A/en

Links

Images

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

Abstract

The present invention is to provide a display device with reduced volume and weight. According to the present invention, the display device includes a display panel which receives light to display an image; a light source part which generates the light; a light guide plate which guides the light of the light source part to provide the light to the display panel; and a high condensing sheet which diffuses and condenses the light provided from the light guide plate to provide the light to the display panel. The display panel, the high condensing sheet and the light guide plate are integrated.

Description

Display device {DISPLAY DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device capable of reducing volume and weight.

The display device may include a display panel for displaying the provided light on top, an optical sheet for diffusing and condensing light to provide the display panel, and a backlight assembly for providing light.

The optical sheet may include a prism sheet, a diffusion sheet, and a protective sheet. The prism sheet condenses the light emitted from the light guide plate of the backlight assembly, and the diffusion sheet diffuses the light condensed by the prism sheet. The protective sheet protects the prism sheet from external friction.

It is an object of the present invention to provide a display device with reduced volume and weight.

A display apparatus according to an embodiment of the present invention includes a display panel that receives light and displays an image, a light source unit that generates the light, a light guide plate that guides the light of the light source unit to the display panel, And a highly collimated sheet for diffusing and condensing light and providing the same on the display panel, wherein the display panel, the highly condensing sheet, and the light guide plate are integrally formed.

The display device further comprises a first adhesive layer for adhering the upper surface of the highly concentrated sheet and the lower surface of the display panel and a second adhesive layer for adhering the lower surface of the highly concentrated sheet and the upper surface of the light guide plate, And is disposed on one side of the light guide plate in the first direction.

Wherein the high concentrating sheet has a first core layer for diffusing and condensing the light provided from the light source portion and providing the light in a direction toward the display panel, a second core layer disposed below the first core layer, And a second resin layer disposed on the first core layer and protecting the first core layer and the display panel.

The first core layer includes a first high refractive index layer having a first refractive index and a first low refractive index layer disposed below the first high refractive index layer and having a second refractive index lower than the first refractive index.

The first refractive index has a refractive index of 1.3 to 1.7, and the second refractive index has a refractive index of 1.0 to 1.5 within a refractive index range not higher than the first refractive index.

And a second core layer disposed below the second core layer and disposed between the second core layer and the light guide plate so as to face the display panel, And a second resin layer disposed on the second core layer and protecting the second core layer and the display panel, wherein the second core layer includes a plurality of reverse prism patterns And a second low refraction layer including a second high refraction layer having a first refraction index and a plurality of prism patterns and disposed below the second high refraction layer and having a second refraction index lower than the first refraction index .

The inverse prism patterns and the prism patterns are arranged in the first direction extending in a second direction intersecting the first direction, and the inverse prism patterns and the prism patterns are arranged to interlock with each other.

The second low refractive index layer may be an air gap.

The inverse prism patterns have any one of an inverted triangular shape, a trapezoidal shape, a semicircular shape, and a semi-elliptical shape.

The highly concentrated sheet comprises a third core layer disposed on top of the third resin layer; And

And a third resin layer disposed between the third core layer and the display panel, wherein the third core layer includes a third high refraction layer including a plurality of inverse prism patterns and having a first refractive index, And a fourth low refractive index layer disposed below the second high refractive index layer and having a second refractive index lower than the first refractive index, wherein the inverse prism patterns of the third high refractive index layer and the prism pattern Extend in the first direction and are arranged in the second direction, and each of the inverse prism patterns and the prism patterns are arranged to interlock with each other.

And the fourth core layer is disposed on the fourth core layer, and the fourth core layer is disposed on the second core layer and the fourth core layer, And a second resin layer disposed on the fourth core layer and protecting the fourth core layer and the display panel, the fourth core layer having a first refractive index, A fourth high refractive index layer having a plurality of inverse prism patterns arranged in the form of a plurality of inverse prism patterns and a plurality of prism patterns arranged at a lower portion of the fourth high refractive index layer and having a second refractive index lower than the first refractive index, And a second low refractive index layer.

The inverse prism patterns may have any one of a conical shape, a conical shape, a polygonal pyramid shape, a polygonal pyramid shape, a disc shape, a hemispherical shape, and a semi-elliptic shape.

The display device of the present invention can reduce the volume and the weight.

1 is an exploded perspective view of a display device according to an embodiment of the present invention.
2 is a cross-sectional view of a display device according to a first embodiment of the present invention.
3 is a cross-sectional view of a display device according to a second embodiment of the present invention.
4 is a perspective view of the second core layer shown in Fig.
5A to 5C are views showing various shapes of the second high refractive index layer.
6A and 6B are cross-sectional views of a display device according to a third embodiment of the present invention.
7 is a cross-sectional view of a display device according to a fourth embodiment of the present invention.
8 and 9 are perspective views of a fourth core layer.
10A to 10H are views showing various shapes of the fourth high refractive index layer.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. To fully disclose the scope of the invention to a person skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

It is to be understood that when an element or layer is referred to as being "on" or " on "of another element or layer, All included. On the other hand, a device being referred to as "directly on" or "directly above " indicates that no other device or layer is interposed in between. "And / or" include each and every combination of one or more of the mentioned items.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" May be used to readily describe a device or a relationship of components to other devices or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. Like reference numerals refer to like elements throughout the specification.

Although the first, second, etc. are used to describe various elements, components and / or sections, it is needless to say that these elements, components and / or sections are not limited by these terms. These terms are only used to distinguish one element, element or section from another element, element or section. Therefore, it goes without saying that the first element, the first element or the first section mentioned below may be the second element, the second element or the second section within the technical spirit of the present invention.

Embodiments described herein will be described with reference to plan views and cross-sectional views, which are ideal schematics of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. Accordingly, the embodiments of the present invention are not limited to the specific forms shown, but also include changes in the shapes that are generated according to the manufacturing process. Thus, the regions illustrated in the figures have schematic attributes, and the shapes of the regions illustrated in the figures are intended to illustrate specific types of regions of the elements and are not intended to limit the scope of the invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a display device according to a first embodiment of the present invention.

1, the display device 100 according to the first embodiment of the present invention has a long side in the first direction D1 and a short side in the second direction D2 which intersects the first direction D2. Lt; / RTI > The display device 100 includes a window assembly 200, a display panel 300, a high-integration sheet 400, a light guide plate 500, a reflection sheet 600, and a light source 700.

The window assembly 200 serves to cover the display panel 310. The window assembly 200 is disposed at the uppermost portion of the display panel 310 and is exposed to the outside, and may have a light transmitting property.

The display panel 300 may be a liquid crystal display panel. The display panel 300 may include a display substrate 310 and a counter substrate 320 disposed to face the display substrate. Although not shown, the display panel 300 may include a liquid crystal layer interposed between the display substrate 310 and the counter substrate 320.

Although not shown, the display substrate 310 may include a plurality of pixels, and each of the pixels may include a pixel electrode and a thin film transistor. The counter substrate 320 may include a common electrode facing the pixel electrodes and a color filter for filtering the light with color light.

A fixed collimator sheet 400 is disposed below the display panel 300. The fixed collimation sheet 400 serves to diffuse and condense light. The solid light collecting sheet 400 will be described in more detail below with reference to Figs. 2 to 8. Fig.

A light guide plate 500 is disposed below the fixed light collection sheet 400. The light guide plate 500 guides the light provided from the light source unit 700 toward the upper direction where the display panel 300 is disposed and emits the light. The light guide plate 500 may be made of a transparent material that refracts light. Illustratively, the light guide plate 500 may be formed of a transparent polymer resin such as polycarbonate or polymethyl methacrylate (PMMA).

A reflective sheet 600 is disposed under the light guide plate 500. The reflective sheet 600 may have a light reflecting property including a material that reflects light. The reflective sheet 600 reflects the leakage light directed to the lower portion of the light guide plate and changes the path of the light upward.

The reflective sheet 600 may be adhered to the light guide plate 500. Specifically, the reflective sheet 600 may be attached to the bottom surface of the light guide plate and have a shape integrated with the light guide plate 500. [

The light source unit 700 may be disposed adjacent to one side of the light guide plate 500 in the first direction D1. The light source unit 700 includes a light source substrate LB and a plurality of light source units LSU. The light source substrate LB extends in the second direction D2. The light source units LSU may be arranged in the second direction D2 and arranged at equal intervals from each other.

The light source units LSU may be mounted on the light source substrate LB and electrically connected to the light source substrate LB. The light source units LSU receive power from the light source substrate LB and generate light. The light source units LSU are arranged to face one side of the light guide plate 500 in the first direction D1 to provide light to the light guide plate 500. [

The light source units LSU may be light emitting diodes (LEDs). A heat dissipating member for emitting heat generated in the light source units LSU is provided on the surface of the light source substrate LB in the direction opposite to the surface of the light source substrate LB on which the light source units LSU of the light source substrate LB are mounted. May be disposed.

2 is a cross-sectional view of a display device according to a first embodiment of the present invention. 2 is a cross-sectional view of the display device 100 according to the present invention viewed in the second direction D2.

Referring to FIG. 2, a highly condensing sheet 400 is disposed between the display panel 300 and the light guide plate 500. The rigidifying sheet 400 includes a first core layer 410 a, a first resin layer 420, and a second resin layer 430.

The first core layer 410a is disposed between the first and second resin layers 420 and 430. The first resin layer 420 is disposed under the first core layer 410a. The second resin layer 430 is disposed on top of the first core layer 410a.

The first core layer 410a includes a first high refractive index layer 411a and a first low refractive index layer 412a. The first high refractive index layer 411a may be disposed on the upper surface of the first low refractive index layer 412a. The first high refractive index layer 411a has a first refractive index. The first low refractive index layer 412a has a second refractive index lower than the first refractive index.

The first refractive index may have a refractive index of 1.3 to 1.7, and the second refractive index may have a refractive index of 1.0 to 1.5 within a refractive index range that is not higher than the first refractive index. For example, when the first refractive index has a refractive index of 1.5 in the range of 1.3 to 1.7, the second refractive index may have a refractive index of 1.4 in the range of 1.9 to 1.5.

The first low refractive index layer 412a serves as a diffusion sheet. That is, the first low refractive index layer 412a may diffuse light provided from the light guide plate 500 and provide the first high refractive index layer 411a.

The first high refractive index layer 411a serves as a prism sheet. That is, the first high refractive index layer 411a condenses the light provided from the first low refractive index layer 412a in the direction toward the display panel 300 disposed on the upper side of the high refractive index sheet 400, to provide.

The first resin layer 420 and the second resin layer 430 serve as a protective sheet. That is, the first resin layer 420 and the second resin layer 430 may protect the first core layer 410a and the parts adjacent to the first core layer 410a.

Specifically, the first resin layer 420 can prevent damage due to friction between the first core layer 410a and the light guide plate 500. The second resin layer 430 can prevent damage due to friction between the first core layer 410a and the display panel 300. [ The first resin layer 420 and the second resin layer 430 may include polyethylene terephthalate (PET).

The rigidifying sheet 400 can be adhered to the display panel 300 and the light guide plate 500 by the first and second adhesive layers AS1 and AS2 having adhesiveness. Concretely, the upper surface of the high-integration sheet 400 can be adhered to the lower surface of the display panel 300 by the first adhesive layer AS1. The lower surface of the fixed light sheet 400 can be adhered to the upper surface of the light guide plate 500 by the second adhesive layer AS2.

According to the first embodiment of the present invention, the first core layer 410a of the highly collimated sheet 400 diffuses and condenses light. The first and second resin layers 420 and 430 may be formed on the display panel 300 and the first and second resin layers 420 and 430 from the friction between the solidified sheet 400 and the display panel 300 and between the solidified sheet 400 and the light guide plate 500, The core layer 410a and the light guide plate 500 can be protected. Therefore, in the embodiment of the present invention, the conventional diffusion sheet, prism sheet and protective sheet can be omitted.

According to the first embodiment of the present invention, the display panel 300 and the light guide plate 500 can be adhered and fixed to the high-refractive-index sheet 400 by the first and second adhesive layers AS1 and AS2, The display panel 300 and the light guide plate 500 may be integrally formed by being coupled to each other. Therefore, the mold frame and the bottom chassis coupling the display panel 300 and the light guide plate 500 can be omitted.

As a result, the volume and weight of the display apparatus 100 can be reduced, and as a result, the portability of the display apparatus 100 can be improved.

3 is a cross-sectional view of a display device according to a second embodiment of the present invention. 3 is a cross-sectional view of the display device 100 according to the present invention viewed in the second direction D2. In the description of FIG. 3, redundant description of the components described above is omitted.

The highly collimated sheet 400 of the display device 100 according to the second embodiment of the present invention includes a second core layer 410b, a first resin layer 420 and a second resin layer 430. [ The second core layer 410b is disposed between the first resin layer 420 and the second resin layer 430. The first resin layer 420 is disposed under the second core layer 410b. The second resin layer 430 is disposed on top of the second core layer 410b.

The second core layer 410b includes a second high refractive index layer 411b and a second low refractive index layer 412b. And the second high refractive index layer 411b may be disposed on the upper surface of the second low refractive index layer 412b. The second high refractive index layer 411b has the same first refractive index as the first high refractive index layer 411a. The second low refractive index layer 412b has the same second refractive index as the first low refractive index layer 412a.

The second high refractive index layer 411b may be an inverted prism pattern having an inverted triangular shape. The second low refractive index layer 412b may be a prism pattern having a triangular shape.

The inverse prism pattern of the second high refractive index layer 411b and the prism pattern of the second low refractive index layer 412b may have a shape that interlocks with each other. Therefore, the thickness of the second core layer 410b may be thinner than the thickness of the first core layer 410a shown in FIG.

The second low refractive index layer 412b of the second core layer 410b may be an empty space. That is, the second low refractive index layer 412b may be replaced with an air gap. The second high refractive index layer 411b may be arranged in an inverted prism pattern, and an air gap may be formed between the inverted prism patterns. Therefore, since the second high refractive index layer 411b of the inverse prism pattern is formed, a void space can be ensured, so that the second low refractive index layer 412b can be replaced with an air gap without an additional supporting member.

As the second high refractive index layer 411b has an inverted prism shape, a load can be applied in the lower end direction of the inverted triangular shape of the second high refractive index layer 411b. At this time, the first resin layer 420 protects the light guide plate 500 from the reverse prism pattern. That is, the first resin layer 420 can prevent the light guide plate 500 from being scratched or worn by the load of the second high refractive index layer 411b.

FIG. 4 is a perspective view of the second core layer shown in FIG. 3, and FIGS. 5A to 5C are views showing various shapes of the second high refractive index layer.

Referring to FIG. 4, the second high refractive index layer 411b of the second core layer 410b may be a plurality of reverse prism patterns having an inverted triangular shape. In particular, the inverse prism patterns of the second high refractive index layer 411b may extend along the second direction D2 and be arranged along the first direction D1.

5A to 5C, the cross section of the second high refractive index layer 411b may have a trapezoidal shape, a semicircular shape, or a semi-elliptical shape. In addition, the cross section of the second high refractive index layer 411b in the shape of an inverted prism may have various shapes.

According to the second embodiment of the present invention, the second core layer 410b of the highly collimated sheet 400 diffuses and condenses light. The first and second resin layers 420 and 430 are formed on the display panel 300 and the second display panel 300 from the friction between the high refractive index sheet 400 and the display panel 300 and between the high refractive index sheet 400 and the light guide plate 500, The core layer 410b and the light guide plate 500 can be protected. Therefore, in the embodiment of the present invention, the diffusion sheet, the prism sheet, and the protective sheet may be omitted.

Also, according to the second embodiment of the present invention, since the display panel 300 and the light guide plate 500 can be adhered and fixed to the high-intensity light sheet 400 by the first and second adhesive layers AS1 and AS2, The display panel 300 and the light guide plate 500 may be integrally formed by being coupled to each other. Therefore, the mold frame and the bottom chassis coupling the display panel 300 and the light guide plate 500 can be omitted.

As a result, the display apparatus 100 according to the second embodiment of the present invention can be reduced in volume and weight, and as a result, the portability of the display apparatus 100 can be improved.

6A and 6B are cross-sectional views of a display device according to a third embodiment of the present invention. In the description of Figs. 6A and 6B, the redundant description of the components described above is omitted.

6A is a sectional view of the display device 100 viewed in the second direction D2 and FIG. 6B is a sectional view of the display device 100 viewed from the first direction D1.

6A and 6B, the high-integration sheet 400 of the display device 100 according to the third embodiment of the present invention includes a second core layer 410b, a third core layer 410c, A first resin layer 420, a second resin layer 430, and a third resin layer 440. That is, the rigidifying sheet 400 may further include a third core layer 410 c and a third resin layer 440 disposed on the second resin layer 430.

Specifically, the second core layer 410b is disposed between the first resin layer 420 and the second resin layer 430. The first resin layer 420 is disposed under the second core layer 410b. The second resin layer 430 is disposed on top of the second core layer 410b.

The third core layer 410c is disposed between the second resin layer 430 and the third resin layer 440. The second resin layer 430 is disposed under the third core layer 410c. The third resin layer 440 is disposed on top of the second core layer 410c.

The third core layer 410c includes a third high refractive index layer 411c and a third low refractive index layer 412c. The third high refractive index layer 411c may be disposed on the upper surface of the third low refractive index layer 412c.

The third high refractive index layer 411c has the same first refractive index as the first high refractive index layer 411a. The third low refractive index layer 412c has the same second refractive index as the first low refractive index layer 412a.

The third high refractive index layer 411c may be an inverted prism pattern having an inverted triangular shape. The third low refractive index layer 412c may be a prism pattern having a triangular shape. The inverse prism pattern of the third high refractive index layer 411c and the prism pattern of the third low refractive index layer 412c may have a shape that interlocks with each other.

The third low refractive index layer 412c of the third core layer 410c may be an empty space. That is, the third low refractive index layer 412c may be replaced with an air gap. The third high refractive index layer 411c may be arranged in an inverted triangular pattern and an air gap may be formed between the reverse triangular patterns. Accordingly, since the third high refractive index layer 411c having an inverted prism shape is formed, a void space can be ensured, so that the third low refractive index layer 412c can be replaced with an air gap without additional supporting members.

The third high refractive index layer 411c of the third core layer 410c may be a plurality of inverted prism patterns having an inverted triangular shape. In particular, the inverse prism patterns of the third high refractive index layer 411c may extend along the second direction D2 and be arranged along the first direction D1.

 That is, the inverted triangular patterns of the second high refractive index layer 411b and the inverted triangular patterns of the third high refractive index layer 411c may extend to cross each other. Accordingly, the second core layer 410b and the third core layer 420c can diffuse and condense the light provided from the light guide plate 500 in different directions.

The third high refractive index layer 411c may have a trapezoidal shape, a semicircular shape or a semi-elliptical shape like the cross section of the second high refractive index layer 411b. In addition, the cross section of the inverted prism shape of the third high refractive index layer 411c may have various shapes.

According to the third embodiment of the present invention, the second and third core layers 410b and 410c of the highly collimated sheet 400 diffuse and condense light. The first to third resin layers 420, 430 and 440 are disposed between the high refractive sheet 400 and the display panel 300, between the second core layer 410b and the third core layer 410c, The display panel 300, the second and third core layers 410b and 410c, and the light guide plate 500 can be protected from friction between the light guide plate 400 and the light guide plate 500. [ Therefore, in the embodiment of the present invention, the diffusion sheet, the prism sheet, and the protective sheet may be omitted.

Also, according to the third embodiment of the present invention, the display panel 300 and the light guide plate 500 can be fixedly adhered to the high-refractive-index sheet 400 by the first and second adhesive layers AS1 and AS2, The display panel 300 and the light guide plate 500 may be integrally formed by being coupled to each other. Therefore, the mold frame and the bottom chassis coupling the display panel 300 and the light guide plate 500 can be omitted.

As a result, the volume and weight of the display apparatus 100 according to the third embodiment of the present invention can be reduced, and as a result, the portability of the display apparatus 100 can be improved.

7 is a cross-sectional view of a display device according to a fourth embodiment of the present invention. In the description of FIG. 7, redundant description of the components described above is omitted.

7 is a sectional view of the display device 100 viewed from the second direction D2.

7, the highly collimated sheet 400 of the display device 100 according to the fourth embodiment of the present invention includes a fourth core layer 410d, a first resin layer 420 and a second resin layer 430 ).

The fourth core layer 410d is disposed between the first resin layer 420 and the second resin layer 430. The first resin layer 420 is disposed under the fourth core layer 410d. A second resin layer 430 is disposed on top of the fourth core layer

The fourth core layer 410d includes a fourth high refractive index layer 411d and a fourth low refractive index layer 412d. The fourth high refractive index layer 411d may be disposed on the upper surface of the fourth low refractive index layer 412d.

The fourth high refractive index layer 411d has the same first refractive index as the first high refractive index layer 411a. The fourth low refractive index layer 412d has a second refractive index the same as that of the first low refractive index layer 412a.

The fourth high refractive index layer 411d may be an inverted prism pattern having a plurality of historical pyramids. As shown in the figure, the fourth core layer 410d may have an inverted prism pattern when viewed in the first direction D1 and when viewed in the second direction D2. The shape of the fourth core layer 410d will be described in more detail below with reference to FIG.

The fourth low refractive index layer 412d of the fourth core layer 410d may be an empty space. That is, the fourth low refractive index layer 412d may be replaced with an air gap. The fourth high refractive index layer 411d may be arranged in an inverted triangular pattern and an air gap may be formed between the inverted triangular patterns. Accordingly, since the fourth high refractive index layer 411d having an inverted prism shape is formed, a void space can be ensured, so that the fourth low refractive index layer 412d can be replaced with an air gap without an additional supporting member.

FIG. 8 and FIG. 9 are perspective views of the fourth core layer shown in FIG. Fig. 8 is a perspective view of the fourth high refractive index layer of the fourth core layer, and Fig. 9 is a perspective view of the fourth low refractive index layer of the fourth core layer. In FIG. 8, the fourth high refractive index layer 411d of the fourth core layer 410d is turned upside down for convenience of explanation.

Referring to FIG. 8, the fourth high refractive index layer 411d of the fourth core layer 410d may be an inverted prism pattern in which a plurality of historical pyramids are arranged in a matrix form.

According to a fourth embodiment of the present invention, the fourth core layer 410d has a shape in which an inverted prism pattern of the second core layer 410b and an inverted prism pattern of the third core layer 410c are combined Lt; / RTI > Therefore, the high-integration sheet 400 can serve as a diffusion sheet, two prism sheets, and a protective sheet.

10A to 10H are views showing various shapes of the fourth high refractive index layer.

10A to 10H, the shape of the inverted prism of the fourth high refractive index layer 411d may be in the form of a cone, a polygonal pyramid, a frustum or a polygonal pyramid. In addition, the shape of the inverted prism can have a shape having a curved bottom like a hemisphere. Illustratively, Figs. 9a to 9h illustrate, in succession, conical, pyramidal, conical, quadrangular, horned, disk, semispherical and semi-elliptical spheres in Fig. However, the shape of the inverted prism of the fourth high refractive index layer 411d may have various shapes.

According to the fourth embodiment of the present invention, the highly condensing sheet 400 serves as a diffusion sheet, two prism sheets, and a protective sheet.

The first and second resin layers 420 and 430 are disposed between the rigid sheet 400 and the display panel 300 and between the rigid sheet 400 and the display panel 300, It is possible to protect the display panel 300, the fourth core layer 410d, and the light guide plate 500 from friction between the light sheet 400 and the light guide plate 500. [ Therefore, in the embodiment of the present invention, the diffusion sheet, the prism sheet, and the protective sheet may be omitted.

According to the fourth embodiment of the present invention, since the display panel 300 and the light guide plate 500 can be adhered and fixed to the rigid light-converging sheet 400 by the first and second adhesive layers AS1 and AS2, The display panel 300 and the light guide plate 500 may be combined to form an integral body. Therefore, the mold frame and the bottom chassis coupling the display panel 300 and the light guide plate 500 can be omitted.

As a result, the display apparatus 100 according to the fourth embodiment of the present invention can be reduced in volume and weight, and as a result, the portability of the display apparatus 100 can be improved.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible. In addition, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, and all technical ideas which fall within the scope of the following claims and equivalents thereof should be interpreted as being included in the scope of the present invention .

100: display device 200: window assembly
300: display panel 310: display substrate
320: opposing substrate 400:
410a: first core layer 411a: first high refractive index layer
412a: first low refractive layer 420: first resin layer
430: second resin layer 440: third resin layer
500: light guide plate 600: reflective sheet
700: light source LSU: light source unit
LB: light source substrate AS1: first adhesive layer
AS2: Second adhesive layer

Claims (12)

A display panel that receives light and displays an image;
A light source for generating the light;
A light guide plate guiding the light of the light source unit toward the display panel; And
And a highly condensing sheet for diffusing and condensing the light provided from the light guide plate and providing the condensed light to the display panel,
Wherein the display panel, the solid-liquid collecting sheet, and the light guide plate are integrally formed. The method according to claim 1,
A first adhesive layer for adhering the upper surface of the highly concentrated light sheet to the lower surface of the display panel; And
Further comprising a second adhesive layer for adhering the lower surface of the highly concentrated light sheet and the upper surface of the light guide plate,
Wherein the light source unit is disposed on one side of the light guide plate in the first direction. 3. The method of claim 2,
The high-
A first core layer for diffusing and condensing the light provided from the light source part and providing the light in a direction toward the display panel;
A first resin layer disposed under the first core layer and protecting the first core layer and the LGP; And
And a second resin layer disposed on the first core layer and protecting the first core layer and the display panel. The method of claim 3,
Wherein the first core layer comprises:
A first high refraction layer having a first refraction index; And
And a first low refractive index layer disposed under the first high refractive index layer and having a second refractive index lower than the first refractive index. 5. The method of claim 4,
The first refractive index has a refractive index of 1.3 to 1.7,
And the second refractive index has a refractive index of 1.0 to 1.5 within a refractive index range not higher than the first refractive index. 3. The method of claim 2,
The high-
A second core layer for diffusing and condensing the light provided from the light source part and providing the light in a direction toward the display panel;
A first resin layer disposed under the second core layer to protect the second core layer and the LGP; And
And a second resin layer disposed on the second core layer and protecting the second core layer and the display panel,
Wherein the second core layer comprises:
A second high refraction layer including a plurality of inverse prism patterns and having a first refractive index; And
And a second low refraction layer disposed at a lower portion of the second high refraction layer and having a second refractive index lower than the first refractive index. The method according to claim 6,
Wherein the inverse prism patterns and the prism patterns extend in a second direction intersecting with the first direction and are arranged in the first direction,
Wherein each of the inverse prism patterns and the prism patterns is arranged to interlock with each other. 8. The method of claim 7,
And the second low refractive index layer is an air gap. The method according to claim 6,
Wherein the inverse prism patterns have any one of an inverted triangular shape, a trapezoidal shape, a semicircular shape, and a semi-elliptical shape. The method according to claim 6,
The high-
A third core layer disposed on top of the third resin layer; And
And a third resin layer disposed between the third core layer and the display panel,
Wherein the third core layer comprises:
A third high refraction layer including a plurality of inverse prism patterns and having a first refractive index; And
And a fourth low refraction layer disposed at a lower portion of the second high refraction layer and having a second refractive index lower than the first refractive index,
The inverse prism patterns and the prism patterns of the third high refractive index layer extend in the first direction and are arranged in the second direction,
Wherein each of the inverse prism patterns and the prism patterns is arranged to interlock with each other. 3. The method of claim 2,
The high-
A fourth core layer for diffusing and condensing the light provided from the light source and providing the light in a direction toward the display panel;
A first resin layer disposed under the fourth core layer to protect the fourth core layer and the light guide plate; And
And a second resin layer disposed on the fourth core layer and protecting the fourth core layer and the display panel,
Wherein the fourth core layer comprises:
A fourth high refraction layer having a first refractive index and a plurality of reverse prism patterns arranged in a matrix form;
And a second low refraction layer disposed at a lower portion of the fourth high refraction layer and having a second refractive index lower than the first refractive index and having a plurality of prism patterns corresponding to the inverse prism patterns. 12. The method of claim 11,
Wherein the inverse prism patterns have any one of a conical shape, a conical shape, a polygonal pyramid shape, a polygonal pyramid shape, a disc shape, a hemispherical shape, and a semi-elliptic shape,
KR1020140124268A 2014-09-18 2014-09-18 Display device KR20160033833A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140124268A KR20160033833A (en) 2014-09-18 2014-09-18 Display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140124268A KR20160033833A (en) 2014-09-18 2014-09-18 Display device

Publications (1)

Publication Number Publication Date
KR20160033833A true KR20160033833A (en) 2016-03-29

Family

ID=55661713

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020140124268A KR20160033833A (en) 2014-09-18 2014-09-18 Display device

Country Status (1)

Country Link
KR (1) KR20160033833A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170126275A (en) * 2016-05-09 2017-11-17 엘지이노텍 주식회사 Lighting apparatus
EP3258310A1 (en) * 2016-06-13 2017-12-20 Samsung Display Co., Ltd. Display device
EP3567407A4 (en) * 2017-01-05 2020-08-12 Boe Technology Group Co. Ltd. Backlight module, display module and display device
WO2020179944A1 (en) * 2019-03-04 2020-09-10 주식회사 첨단랩 Light extraction structure for curing device, and lighting device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170126275A (en) * 2016-05-09 2017-11-17 엘지이노텍 주식회사 Lighting apparatus
EP3258310A1 (en) * 2016-06-13 2017-12-20 Samsung Display Co., Ltd. Display device
EP3567407A4 (en) * 2017-01-05 2020-08-12 Boe Technology Group Co. Ltd. Backlight module, display module and display device
US10802205B2 (en) 2017-01-05 2020-10-13 Boe Technology Group Co., Ltd. Backlight module, display module and display device
WO2020179944A1 (en) * 2019-03-04 2020-09-10 주식회사 첨단랩 Light extraction structure for curing device, and lighting device
KR20200106382A (en) * 2019-03-04 2020-09-14 주식회사 첨단랩 Structure for extracting light and lighting device for curing apparatus

Similar Documents

Publication Publication Date Title
TWI509293B (en) Side-emitting led lens and backlight unit and display device having the same
CN107357082B (en) Display device
JP4518178B2 (en) Lens array sheet, optical member, light source, and liquid crystal display device
JP5071675B2 (en) Illumination device and display device
KR20170082184A (en) Display apparatus
GB2463913A (en) Light guide with cladding layers
WO2016136786A1 (en) Laminated optical member, lighting device, display device and television receiver
US20150316704A1 (en) Light source and backlight module having the same
KR20160033833A (en) Display device
KR20110097642A (en) Optical sheet stack body, illuminating device, and display device
TW200914940A (en) Optical sheet and backlight assembly and liquid crystal display having the same
JPWO2018155304A1 (en) Brightness equalizing member, backlight unit, and liquid crystal display device
JP2010210904A (en) Optical diffusion sheet, and backlight device and liquid crystal display device using the same
JP5493312B2 (en) Surface light emitting device and image display device
CN109752778B (en) Optical film and display device including the same
CN107544176B (en) Display device
US20150277024A1 (en) Display device
WO2013094376A1 (en) Input system
US20060139947A1 (en) Diffusion plate and backlight module using the same
TW201235718A (en) Light guide plate, surface light source device, and transmissive image display device
KR20140097877A (en) Liquid crystal display device
CN106560739B (en) Display device
US11899236B2 (en) Display backlight with transparent light guide
US9927569B2 (en) Display device
JP2008298839A (en) Optical sheet, back light unit using the same, and display device

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination