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CN105572963A - Display device and light guide plate thereof - Google Patents

Display device and light guide plate thereof Download PDF

Info

Publication number
CN105572963A
CN105572963A CN201510506503.0A CN201510506503A CN105572963A CN 105572963 A CN105572963 A CN 105572963A CN 201510506503 A CN201510506503 A CN 201510506503A CN 105572963 A CN105572963 A CN 105572963A
Authority
CN
China
Prior art keywords
quarter
display
light
reflective graphics
projection
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN201510506503.0A
Other languages
Chinese (zh)
Other versions
CN105572963B (en
Inventor
金东镕
尹种文
朴旼京
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Optics Ltd
Original Assignee
New Optics Ltd
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 New Optics Ltd filed Critical New Optics Ltd
Publication of CN105572963A publication Critical patent/CN105572963A/en
Application granted granted Critical
Publication of CN105572963B publication Critical patent/CN105572963B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
    • G02B6/0055—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
    • 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
    • G02B6/003—Lens or lenticular sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
    • G02B6/0031—Reflecting element, sheet or layer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • 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
    • G02F1/133602—Direct backlight
    • G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
    • G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses

Landscapes

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

Abstract

The present invention relates to a display device and a light guide plate thereof. According to an aspect of the present invention, there is provided a display device, including: a display panel configured to output an image to a front surface of the display device; a light source array arranged along at least one edge of the display device to output light; and a light guide plate arranged behind the display panel to guide light incident upon a side surface facing the edge from the light source array so that the light is projected through a front surface toward the display panel.

Description

A kind of display and light guide plate thereof
Technical field
The present invention relates to a kind of display and light guide plate thereof.More specifically, the present invention relates to the improved display of a kind of brightness uniformity and light guide plate thereof.
Background technology
Backlight module (BLU:BackLightUnit) refers to the screen rear that is positioned at liquid crystal display and for providing the one of the light supply apparatus of light, it can not only picture quality and consumes power, the life of product etc. such as brightness, color reproduction, visual angle, contrast, readability of direct effect diagram picture, and its price also accounts for about 20 ~ 50% of the total unit price of liquid crystal display, therefore belongs to core component.
According to light source arrangement form, backlight module is roughly divided into straight-down negative (direct-lit)) and side-light type (edge-lit).The light that down straight aphototropism mode set uses the light source being positioned at screen dead astern to penetrate to liquid crystal panel, and side-light backlight module for from the light of light source being positioned at screen edge to side injection light light guide plate this light guided into liquid crystal panel and panel to display provides light.Owing to there is these structural differences, therefore, in the uniformity coefficient, image reproducing etc. of brightness, contrast, picture, down straight aphototropism mode set can advantageously, and in product thickness or expense etc., side-light type then advantageously.
Recently, in display industry, because display product is outstanding day by day as the value of interior decoration article, the proportion that product appearance has the side-light backlight module of greater advantages is increasing.Especially, along with consumer increases day by day to the demand of ultrathin display product, in order to closely follow this trend paces, carry out reducing to greatest extent the research of the diffusion sheet being loaded with about 3 ~ 5 at display panel rear just in high gear, following problem may be there is in such display product, as due to the light diffusibleness be originally responsible for by diffusion sheet cannot be ensured, thus reduce the brightness uniformity of output image, and then increase the weight of focus.
Summary of the invention
Technical matters
A technical matters of the present invention is, provides the improved display of a kind of brightness uniformity and light guide plate thereof.
Technical scheme
According to one embodiment of present invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; Be positioned at the rear of described display panel with it, and make from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.Wherein, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed.In addition, the height of projection in adjacent with described edge in described peripheral sun portion at quarter region is higher than other regions.
In addition, according to another embodiment of the present invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; And light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.In addition, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed.In addition, the height of projection in described peripheral sun portion at quarter can reduce gradually along the direction of described array of source irradiation light.
In addition, according to still another embodiment of the invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; And light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.In addition, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed.Wherein, described peripheral sun portion at quarter has the mutually different region of its height of projection, and the highest region of height of projection can from the center of described reflective graphics vertically arranging along described display, to prevent the reduction at the horizontal visual angle of described display.
Beneficial effect
According to the present invention, the orientation along array of source arranges asymmetric reflective graphics, thus increases the light scattering degree entering light direction, and then improves the brightness uniformity of display panel on the whole.
Accompanying drawing explanation
Fig. 1 is the oblique view of the display according to the embodiment of the present invention.
Fig. 2 is the exploded perspective view of the display according to the embodiment of the present invention.
Fig. 3 is the sectional view of the display according to the embodiment of the present invention.
Fig. 4 is the planimetric map of the first embodiment arranged according to the array of source of the embodiment of the present invention.
Fig. 5 is the planimetric map of the second embodiment arranged according to the array of source of the embodiment of the present invention.
Fig. 6 is the oblique view of the light guide plate according to the embodiment of the present invention.
Fig. 7 is the back view of the light guide plate of the even density of reflective graphics according to the embodiment of the present invention.
Fig. 8 and 9 is the back view of the light guide plate of the Density inhomogeneity of reflective graphics according to the embodiment of the present invention.
Figure 10 and 11 is the oblique view of the light guide plate of modified embodiment according to the invention.
Figure 12 is the oblique view of the first embodiment of reflective graphics according to the embodiment of the present invention.
Figure 13 is the sectional view of the first embodiment of reflective graphics according to the embodiment of the present invention.
Figure 14 is the planimetric map of the first embodiment of reflective graphics according to the embodiment of the present invention.
Figure 15 is the oblique view of the second embodiment of reflective graphics according to the embodiment of the present invention.
Figure 16 is the sectional view of the second embodiment of reflective graphics according to the embodiment of the present invention.
Figure 17 is the planimetric map of the second embodiment of reflective graphics according to the embodiment of the present invention.
Figure 18 is the figure arranged according to the reflective graphics of the embodiment of the present invention.
[explanation of reference numeral]
1000: display
1400: display panel
1600: backlight module
2000: light guide plate
2040: reflecting surface
2060: incidence surface
2200: reflective graphics
2220: middle heart-yang portion at quarter
2222: sunk area
2240: the moon portion at quarter
2260: peripheral sun portion at quarter.
Embodiment
Below, display and the light guide plate thereof of one embodiment of the present of invention will be explained by reference to the accompanying drawings.
In addition, being will give same or analogous reference symbol to identical or corresponding composition important document and omit the repeat specification to this regardless of reference numeral, for ease of illustrating, can zooming in or out the size and shape of each shown building block.
According to one embodiment of present invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; And light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.Wherein, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, carry out toward inside, the back side portion at positive quarter, periphery formed with the moon portion at quarter formed around described middle heart-yang portion at quarter and the back side, the lateral outer projection in this moon portion at quarter of caving in.In addition, the height of projection in adjacent with described edge in described peripheral sun portion at quarter region is higher than other regions.
Described array of source can be arranged in the short edge of described display, and the height of projection in sun portion at quarter, the periphery of described reflective graphics can change along the long side direction of described display.
In addition, described array of source can be arranged on the long edge of described display, and the height of projection in the sun portion at quarter, periphery in described reflective graphics can change along the short side direction of described display.
In addition, in described peripheral sun portion at quarter, from described edge, the height of projection in region farthest can be less than the height of projection in other regions.
In addition, region adjacent with described edge from described peripheral sun portion at quarter, more far away from this region, described peripheral positive quarter, the height of projection in portion can be less.
In addition, when looking up from the side perpendicular to the back side, the middle heart-yang portion at quarter in described reflective graphics is round-shaped, and described cloudy quarter, portion was the annular shape around middle heart-yang portion at quarter, and described peripheral sun portion at quarter is the annular shape around portion at described cloudy quarter.
In addition, the thickness of the ring in adjacent with described edge in described peripheral sun portion at quarter region can be thicker than the thickness of the ring in other areas.
In addition, the center in described middle heart-yang portion at quarter can comprise the sunk area caved in inward.
In addition, described sunk area can possess the major axis with described sides aligned parallel.
In addition, centered by described sunk area, the height of projection in region close with described edge in middle heart-yang portion at quarter is higher than the height of projection from the region away from described edge.
In addition, in described reflecting surface, from described edge more away from, the density of reflective graphics is closeer.
In addition, on the corner of the reflecting surface adjacent with described edge, the density of reflective graphics can be the closeest.
In addition, according to another embodiment of the present invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; And light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.In addition, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, carry out toward inside, the back side portion at positive quarter, periphery formed with the moon portion at quarter formed around described middle heart-yang portion at quarter and the back side, the lateral outer projection in this moon portion at quarter of caving in.In addition, the height of projection in described peripheral sun portion at quarter can reduce gradually along the direction of described array of source irradiation light.
In described reflective graphics, described middle heart-yang portion at quarter is circular, and described cloudy quarter, portion was the annular around middle heart-yang portion at quarter, and described peripheral sun portion at quarter is the annular shape around portion at described cloudy quarter.The thickness forming the ring of the shape in described peripheral sun portion at quarter can diminish gradually along the direction of described array of source output light.
According to still another embodiment of the invention, the invention provides a kind of display, it comprises: display panel, and it is to output image before display; Array of source, its at least one edge along described display carries out arranging and for exporting light; And light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge.In addition, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate.In addition, described reflective graphics comprise rearwardly outer projection and formed middle heart-yang portion at quarter, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed.Wherein, described peripheral sun portion at quarter has the mutually different region of its height of projection, and the highest region of height of projection can from the center of described reflective graphics vertically arranging along described display, to prevent the reduction at the horizontal visual angle of described display.
In addition, the highest region of described peripheral sun portion's protrusions height at quarter can from the center of described reflective graphics along the lower side of described display to arranging, to prevent the reduction at the visual angle in the direction, upside of described display.
In addition, the lower side that described array of source can be arranged in described display to edge on, to make light enter described reflective graphics by the region that height of projection is the highest, thus increase the light scattering degree according to described reflective graphics.
In addition, described array of source can be arranged in described display with from the center of described reflective graphics towards on the edge on identical direction, the direction in the highest region of described height of projection, to make light enter described reflective graphics by the region that height of projection is the highest, thus increase the light scattering degree according to described reflective graphics.
In addition, the region that described peripheral lug boss protrusions height is minimum can arrange from the center of described reflective graphics along the reflection direction in the highest region of described height of projection.
In addition, vertical from the center of described reflective graphics along described display in described peripheral sun portion at quarter, the height of projection in region of thirty years of age in fact can be equal in opposite directions, to improve the horizontal visual angle of described display.
Below, the display (1000) according to the embodiment of the present invention will be described.Fig. 1 is the oblique view of the display according to the embodiment of the present invention.
As shown in Figure 1, display (1000) is the device for output image.Display (1000) with as shown in Figure 1 usually can by having rectangular display panel (1200) output image of laterally long limit (1020) and vertical minor face (1040).In addition, display (1000) possesses from telepilot to the power switch used according to user, for the sensor (1002) of the order of receiving channels conversion, the adjustment of sound size etc. or inductive light intensity, for directly receiving the button (1004) of described input or the loudspeaker (not shown) etc. for exporting sound.In addition, vertical display (1000) possesses further and allows display (1000) be placed in shelf and carry out the support portion (1006) that supports.
Described display (1000) refers to, comprise various can the display (1000) of output image as all concepts of LCD display, PDP display, OLED display etc., should make explanations with generalized way.But, for ease of explanation below, the explanation below mainly carrying out centered by liquid crystal display (1000).In addition, illustrate the display (1000) realized with panel display screen (FPD) in Fig. 1, and display of the present invention (1000) employs camber display screen (curveddisplay) unlike this.
Fig. 2 is the exploded perspective view of the display according to the embodiment of the present invention, and Fig. 3 is the sectional view of the display according to the embodiment of the present invention.
As shown in Figures 2 and 3, display (1000) can comprise housing (1200), display panel (1400) and backlight module (1600).
Housing (1200) is for by holding display panel (1400) and backlight module (1600) therein and making display panel (1400) and backlight module (1600) from external impact.In addition, housing (1200) has display panel (1400) and backlight module (1600) can be allowed to carry out the function integrated.
Housing (1200) can comprise box top (1220), guide frame (1240) and lid bottom (1260).Box top (1220) and lid bottom (1260) combine the front and back covering display (1000) respectively, and guide frame (1240) is then installed between both.This guide frame (1240) is fixed display panel (1400) together with the frame of box top (1220), also lightguide plate fixing (2000) and otpical leaf (1620) together with lid bottom (1260).
Display panel (1400) shows image by utilizing the light provided by backlight module (1600).
Display panel (1400) can comprise two transparency carriers and be contained in the liquid crystal layer (1420) between these two transparency carriers.Wherein, transparency carrier can be color filter (1460) and thin film transistor (TFT) (TFT) (1440) respectively.When the grid line (gateline) and data line (dataline) that pass through thin film transistor (TFT) (1440) apply electric signal to liquid crystal layer (1420), liquid crystal arrangement can change, thus the light select pool property in units of pixel allowing backlight module (1600) penetrate carry out through, those through light catch color through color filter (1460), thus output image.Wherein, thin film transistor (TFT) (1440) can pass through printed circuit board (PCB) (PCB, not shown) with cover the panel driving portion (not shown) such as brilliant film (COF:ChipOnFilm) or thin-film package (TCP:TapeCarrierPackage) and carry out electric coupling, thus reception control signal.
Backlight module (1600) can provide light to the rear of display panel (1400) and allow display panel (1400) output image.
Backlight module (1600) can comprise optical thin film (1620), array of source (1640), light guide plate (2000) and reflecting plate (1680).
Array of source (1640) can comprise for luminescence light source (1642) and the light source substrate (1644) of light source (1642) is set.As light source (1642), cold-cathode fluorescence lamp (CCFL:ColdCathodeFluorescentLamp), external electrode fluorescent lamp (EEFL:ExternalElectrodeFluorescentLamp) or light emitting diode (LED:LightEmittingDiode) etc. can be used.When described array of source (1640) is for side-light backlight module (1600), array of source (1640) is set at the edge of display (1000) and makes light source (1642) towards side, to make light can from the incident sideways of light guide plate (2000).When described array of source (1640) is for down straight aphototropism mode set (1600), array of source (1640) is located at lid bottom (1260), exports light to make light source (1642) towards display panel (1400) rear.Now, light source substrate (1644) can be located at lid bottom (1260), maybe can omit light source substrate (1644) and light source (1642) is directly arranged on lid bottom (1260).
Array of source (1640) can along the long limit (2002 of the light guide plate (2000) in display (1000), the direction identical in fact with the long edge (1020) of display (1000)) or minor face (2004, the direction identical in fact with the short edge (1040) of display (1000)) direction arrange.
Fig. 4 is the planimetric map of the first embodiment arranged according to the array of source of the embodiment of the present invention, and Fig. 5 is the planimetric map of the second embodiment arranged according to the array of source of the embodiment of the present invention.
As shown in Figure 4, array of source (1640) can be arranged along the short edge of display (1000) (1040).Particularly, the short edge (1040) of light source substrate (1644) along display (1000) on lid bottom (1240) is arranged, and on light source substrate (1644), multiple light source (1642) arranges along short edge (1040).Spacing between light source (1642) can for equidistantly or as required can different spacing arrange.Described light source (1642) can irradiate light along the side in long edge (1020) direction of display (1000), carries out incidence to make light by the side of light guide plate (2000) to light guide plate (2000) inside.
As shown in Figure 5, array of source (1640) can be arranged along the long edge (1020) of display (1000).Particularly, the long edge (1020) of light source substrate (1644) along display (1000) on lid bottom (1240) is arranged, and on light source substrate (1644), multiple light source (1642) arranges along long edge (1020).Spacing between light source (1642) can for equidistantly or as required can different spacing arrange.Described light source (1642) can irradiate light along the side in short edge (1040) direction of display (1000), carries out incidence to make light by the side of light guide plate (2000) to light guide plate (2000) inside.
Light guide plate (2000) is established in opposite directions in backlight module (1600), with the rear of display panel (1400).The light directed toward display panel (1400) that described light guide plate (2000) can will export from light source (1642) to side.In addition, figure is formed respectively in the side of the above and below of light guide plate (2000) and light source (1642), to improve the homogeneity of light, as improved brightness or improving focus etc.Material as light guide plate (2000) can use PMMA material (PMMA:PolyMethlyMethacrylate) or MS, MMA, or uses the material of glass etc.Below, light guide plate (2000) can be described in more detail.In addition, during as utilized down straight aphototropism mode set (1600), the diffuser plate that can be equipped with diffusing light replaces the light guide plate (2000) for leaded light.
Optical thin film (1620) is located at the rear of display panel (1400) and establishes in opposite directions with display panel (1400), when being equipped with light guide plate (2000), optical thin film (1620) can be arranged between display panel (1400) and light guide plate (2000).The example of optical thin film (1620) has, diffusion sheet (1624) or prismatic lens (1622).Diffusion sheet (1624) can allow the light exported from light guide plate (2000) or diffuser plate evenly spread, thus improve the homogeneity of light output distribution, and can alleviate or prevent the generation of light and shade (dark/bright) pattern as not Ah (Moire) phenomenon or focus.Opticpath can be adjusted to the direction perpendicular to display panel (1400) by prismatic lens (1622).Forwards can divide through the light of light guide plate (2000) or diffusion sheet (1624) and scatter, and prismatic lens (1622) can make these light disperseed towards display panel (1400) vertical output, thus improve brightness and the visual angle of display (1000).According to an embodiment, as illustrated in fig. 1 and 2, as optical thin film (1620), can from display panel (1400) mutually nearby place vertical prism sheets (1622a), horizon prism sheet (1622b) and diffusion sheet (1624) one by one.But the order of putting of these optical thin films (1620) is not limited only to this.In other words, the part in optical thin film (1620) can be omitted or part arranges (e.g., can arrange the diffusion sheet (1624) of more than two or two) with the form of multiple, suitably changes again or as required.
Reflecting plate (1680) Pasting is in lid bottom (1260).Described reflecting plate (1680) can reflect to display panel (1400) light penetrated backward in the light that those light sources (1642) export.Described reflecting plate (1680) can improve the display brightness of light guide plate (2000) and diffuser plate on the whole.
Below, by the more light guide plate (2000 explained according to the embodiment of the present invention.
Fig. 6 is the oblique view of the light guide plate (2000) according to the embodiment of the present invention.
As shown in Figure 6, tabular light guide plate (2000) can be provided.Now, light guide plate (2000) has a pair cylinder and connects the side of these two cylinders.In a pair cylinder, close with display panel (1400) is the exiting surface (2020) exporting light to display panel (1400) above, and its back side is the reflecting surface (2040) for reflected light.In addition, at least one side in the middle of side will be established in opposite directions with light source (1642), and becomes the incidence surface (2060) receiving incident light.Usually, display (1000) has square screen, and therefore light guide plate (2000) also correspondingly has square platy structure.As light guide plate (2000) for square platy structure time, any surface in four sides or from up and down in opposite directions and a pair side of establishing or a pair side of establishing in opposite directions from left and right can become incidence surface (2060).In addition, in figure 3, although light guide plate (2000) is illustrated as the unified flat board of thickness, this should not be only limitted to.According to an embodiment, in order to improve light inlet rate, can take in light guide plate (2000) with light source (1642) in opposite directions and the adjacent domain of the side of establishing has thicker shape than other regions.
Described light guide plate (2000) receives the light penetrated by light source (1642) by incidence surface (2060), then in light guide plate (2000), carry out leaded light, then by exiting surface (2020), these light is exported with area source (1642) form.Reflecting surface (2040) can play the effect of reflecting the light spilt from light guide plate (2000) back side to exiting surface (2020).Incidence surface (2060), exiting surface (2020) and reflecting surface (2040) can form figure respectively, to be used for effectively carrying out light inlet, bright dipping and reflected light.Especially, reflecting surface (2040) can form reflective graphics (2200), to be used for reflection from light guide plate (2000) back side, namely from the light that reflecting surface (2040) spills.
Reflecting surface (2040) can be formed multiple reflective graphics (2200).Described reflective graphics (2200) is formed by utilizing stencil, print process or laser-etching process, sedimentation, compacting (pressing) method, roller punching press (rollstamping) method etc.By these technique, reflective graphics (2200) can be formed as specific shape, effectively can reflect or reflect those light released from light guide plate (2000) back side to exiting surface (2020).In aftermentioned, reflective graphics (2200) will be described in more detail.
Fig. 7 is the back view of the light guide plate (2000) of the even density of reflective graphics (2200) according to the embodiment of the present invention, and Fig. 8 and 9 is the back view of the light guide plate (2000) of the Density inhomogeneity of reflective graphics (2200) according to the embodiment of the present invention.
According to an embodiment, as shown in Figure 7, reflecting surface (2040) can be formed the reflective graphics (2200) of even density.When reflective graphics (2200) of even density can be formed on reflecting surface (2040), no matter display (1000) is several cun, identical figure formation process can be suitable for, compatible high, and compared with forming the reflective graphics (2200) of Density inhomogeneity, advantage is that technique is simple and reduction manufactures unit price.
According to another embodiment, at the upper reflective graphics (2200) forming Density inhomogeneity of reflecting surface (2040).Particularly, the closer to light face (being positioned at the side of the light guide plate (2000) at the back side of incidence surface) from incidence surface (2060), the density of reflective graphics (2200) can increase gradually.That is the closer to light face from incidence surface (2060), the coverage rate of reflective graphics (2200), size can increase gradually or spacing can narrow gradually.In addition, near incidence surface (2060), density has the reflective graphics (2200) in corner increases comparatively sharp.
The arrangement of the reflective graphics (2200) when Fig. 8 illustrates short edge (1040) array of source (1640) being arranged at display (1000), and the reflective graphics (2200) when Fig. 9 illustrates long edge (1020) array of source (1640) being arranged at display (1000).
In the inside of light guide plate (2000), the light quantity incident from array of source (1640) near the region of incidence surface (2060) can be more, but the closer to light face, incident light quantity can reduce gradually, as mentioned above, with compared with the region close to incidence surface (2060), form denser reflective graphics (2200) in region far away with it, thus the difference reduced into light quantity, and then reduce described luminance difference.In addition, compared with other regions, corner has the form that a side light source is omitted, and causes lacking light quantity, but by improving reflective graphics (2200) density in corner, thus also can alleviate the phenomenon occurring dark-part in corner.
In addition, the incidence surface (2060) of light guide plate (2000) forms zigzag pattern (2400), to improve Light distribation angle from the incident light of light source (1642) and enhanced diffustion effect.As shown in Figure 7, zigzag pattern (2400) mainly from upper and lower to the sun portion at quarter extended out with cloudy portion at quarter repeated arrangement on the Width along incidence surface (2060), and is formed on incidence surface (2060).In addition, the exiting surface (2020) of light guide plate (2000) can form light guiding graphics (2600), with will by the incident photoconduction of incidence surface (2060) in all regions of light guide plate (2000).Light guiding graphics (2600) repeats to be formed at exiting surface (2020) above to be made it to extend perpendicular to incidence surface (2060), can be convex-concave pattern, or be formed the form of triangle or square prism patterns.
Figure 10 and 11 is the oblique view of the light guide plate of modified embodiment according to the invention.
Figure 10 illustrates, when incidence surface (2060) is positioned at short edge (1040), zigzag pattern (2400) is formed at in short edge (1040) the in opposite directions one side of thirty years of age, and light guiding graphics (2600) can extend along the direction at the long edge (1020) of light guide plate (2000).Similar, Figure 11 illustrates, when incidence surface (2060) is positioned at short edge (1040), zigzag pattern (2400) is formed at on long edge (1020) the in opposite directions one side of thirty years of age, and light guiding graphics (2600) can extend along the direction of the short edge (1040) of light guide plate (2000).
Light guide plate (2000) can comprise above-mentioned zigzag pattern (2400) or light guiding graphics (2600), and reflective graphics (2200).And zigzag pattern (2400), light guiding graphics (2600) and reflective graphics (2200) can be formed in light guide plate (2000) simultaneously.
Below, the reflective graphics (2200) according to the embodiment of the present invention will be described.
Reflective graphics (2200) can be formed as given shape according to raised or sunken on reflecting surface (2040), thus can reflect those light for spilling from light guide plate (2000) back side.Reflected light like this as a result, have increase due to the amount of the light exported by the exiting surface (2020) of light guide plate (2000), thus improve the brightness of display (1000).
In the present invention, substantially can provide with the reflective graphics of site graphic form (2200).When looking up from the side vertical with reflecting surface (2040), reflective graphics (2200) can to have on reflecting surface (2040) on the whole with the region of circular protrusions, around this region and the position of depression and around the region of again caving in and protruding region.
Reflective graphics (2200) formed mainly through roller pressing or pressing.Particularly, depressed area is through roller punching press or pressing cuts out reflecting surface (2040) and is formed, and boss is that described depressed area is pushed to around and is formed.Now, by roller pressing or the pressing of hot pressing mode, effectively patterning process can be carried out.
Described reflective graphics (2200) can reflect on respective region, reflect or scattering those from incidence surface (2060) the incident and light penetrated to reflecting surface (2040) or reflected and the light penetrated to reflecting surface (2040) at exiting surface (2020), thus effectively can carry out the reflection of light.Particularly, reflective graphics (2200) once can carry out to property reflecting on the lug boss of periphery, scattering, diffusion and reflection ray, then again these light are reflected by the lug boss at depressed part and center, scattering, diffusion and reflection.Especially, peripheral lug boss has the function of the light being incident in reflective graphics (2200) being carried out to disposable scattering, thus can improve the brightness uniformity on exiting surface (2020) comprehensively.
Below, will illustrate according to the first embodiment in the various shapes of the reflective graphics (2200) of the embodiment of the present invention.
Figure 12 is the oblique view of the first embodiment of reflective graphics (2200) according to the embodiment of the present invention, Figure 13 is the sectional view of the first embodiment of reflective graphics (2200) according to the embodiment of the present invention, and Figure 14 is the planimetric map of the first embodiment of reflective graphics (2200) according to the embodiment of the present invention.
As shown in Figure 12 ~ 14, middle heart-yang portion at quarter (2220), cloudy portion at quarter (2240) and periphery sun portion at quarter (2260) can be comprised according to the first kind of the reflective graphics (2200) of the embodiment of the present invention.
Middle heart-yang portion at quarter (2220) is positioned at the center of reflective graphics (2200), is the part of the basal plane outwardly convex than reflecting surface (2040).Particularly, as shown in figure 12, middle heart-yang portion at quarter (2220) goes out from reflecting surface (2040) projection by adopting semi-spherical shape.Time viewed from the direction perpendicular to reflecting surface (2040), as shown in figure 13, middle heart-yang portion at quarter (2220) can be round-shaped.In addition, during from its cross section, as shown in figure 14, middle heart-yang portion at quarter (2220) has maximum height at center, and along with away from center, the height of middle heart-yang portion at quarter (2220) reaches the height of the basal plane of reflecting surface (2040) gradually.According to an embodiment, during from cross section, middle heart-yang portion at quarter (2220) forms the curved surfaces such as circular arc type, oval arc-shaped, parabolic type and from the basal plane outwardly convex of reflecting surface (2040).Preferably, the edge of middle heart-yang portion at quarter (2220) is less the closer to its gradient of central part with comparatively precipitous gradient projection.Carry out heart-yang portion at quarter (2220) in surface-treated with described curved surface and can be easy to the incident light in refraction, scattering, reflection relative broad range.
Cloudy portion at quarter (2240), around middle heart-yang portion at quarter (2220), is the part caved in inward than the basal plane of reflecting surface (2040).Wherein, when looking up from the side vertical with reflecting surface (2040), as shown in figure 13, cloudy portion at quarter (2240) can form tubular shape.The Ring current distribution forming cloudy portion at quarter (2240) overlaps with the center of the circle in heart-yang portion at quarter (2220) in formation.
Wherein, as shown in figure 14, cloudy portion at quarter (2240) has the height identical with the basal plane of reflecting surface (2040) in inner radius (border be connected with middle heart-yang portion at quarter (2220)), and within certain distance from described inner radius, from internal diameter more away from, the degree of depth also can increase, finally reach depth capacity, and after reaching depth capacity, along with close external diameter (with the sun border that portion at quarter, (2260) were connected, periphery), the degree of depth shoals gradually, has identical height cloudy portion at the quarter (2240) of outer radius with the basal plane of reflecting surface (2040).Now, the par with certain depth can be provided reaching depth capacity part.And, larger than the degree of tilt of outer radius in the degree of tilt of the inner radius in the moon portion at quarter (2240).According to an embodiment, during from cross section, cloudy portion at quarter (2240) forms the curved surface of circular arc type, oval arc-shaped, parabolic type etc. and is sunken inward on the basal plane of reflecting surface (2040).The incident light in refraction, scattering, reflection relative broad range can be easy to surface treated cloudy portion at the quarter (2240) of described curved surface.
Peripheral sun portion at quarter (2260), around the moon portion at quarter (2240), is the part of the basal plane outwardly convex than reflecting surface (2040).
As shown in figure 13, when looking up from the side vertical with reflecting surface (2040), peripheral sun portion at quarter (2260) is formed as tubular shape.Now, the Ring current distribution forming peripheral sun portion at quarter (2260) is not identical with the Ring current distribution forming cloudy portion at quarter (2240) with the circle in heart-yang portion at quarter (2220) in formation.So, peripheral sun portion at quarter (2260) can be also different according to the thickness of position its ring different.Now, in peripheral sun portion at quarter (2260), more far away from incidence surface (2060) from the region close with incidence surface (2060), the thickness of the ring that peripheral positive portion at quarter, (2260) were formed can reduce gradually.In other words, ring thickness is, from the direction of array of source (1640) incident light, namely reduces gradually along the direction perpendicular to this edge from having the edge of arrangement array of source (1640).So, in peripheral sun portion at quarter (2260) with have the thickness at region place that the edge of arrangement array of source (1640) is close maximum.In addition, in peripheral sun portion at quarter (2260) with have the thickness at region place farthest, the edge of arrangement array of source (1640) minimum.
As shown in figure 14, described peripheral sun portion at quarter (2260) has the height identical with the basal plane of reflecting surface (2040) in inner radius (border be connected with the moon portion at quarter (2240)), to in certain distance from described inner radius, from internal diameter more away from, highly also increase gradually and reach maximum height, after reaching maximum height, reduce until have the height identical with the basal plane of reflecting surface (2040) highly gradually, thus form external diameter.According to an embodiment, during from cross section, peripheral sun portion at quarter (2260) form the curved surfaces such as circular arc type, oval arc-shaped, parabolic type and on the basal plane of reflecting surface (2040) outwardly convex.The incident light that surface-treated peripheral sun portion at quarter (2260) can be easy in refraction, scattering, reflection relative broad range is carried out with described curved surface.Especially, peripheral sun portion at quarter (2260) is located in the outermost of reflective graphics (2200), and once scattering is carried out to the light being incident in reflective graphics (2200), those forwards spread after being scattered by the light that reflective graphics (2200) reflects, and from exiting surface (2020) injection, thus the raising of brightness uniformity is made a significant contribution.
Now, the meeting of peripheral sun portion at quarter (2260) also can not be identical according to position its maximum height of projection different.In peripheral sun portion at quarter (2260), more far away from incidence surface (2060) from the region close with incidence surface (2060), the height of projection of peripheral positive portion at quarter (2260) can reduce gradually.In other words, height of projection is, from the direction of array of source (1640) incident light, namely reduces gradually along the direction perpendicular to this edge from having the edge of arrangement array of source (1640).So, as shown in figure 14, maximum with the height of projection in the region (2260a) having the edge of arrangement array of source (1640) close in peripheral sun portion at quarter (2260).In addition, in peripheral sun portion at quarter (2260) with have the height of projection in the region farthest, edge (2260b) of arrangement array of source (1640) minimum.
With the shape of morphogenetic reflective graphics (2200) like this owing to being asymmetrical, its optical characteristics has anisotropy and non-isotropy.Particularly, thickness is thicker, maximum height is higher side has the effect of stronger light scattering than the side in direction in contrast.And compared with the side that, maximum height thicker with thickness is higher, the side in direction provides better visual angle in contrast.Therefore, by utilizing anisotropic optical characteristics, brightness uniformity or the visual angle of display (1000) can be improved.
Especially, the light incident from array of source (1640) can pass through incidence surface (2060) directive to light face, height of projection specific surface towards the side of incidence surface (2060) in peripheral sun portion at quarter (2260) is higher to the height of projection of the side to light face, thus to incident and carry out scattering to greatest extent to the light of light face movement toward light guide plate (2000) by incidence surface (2060), and then strengthening dispersion effect.
In addition, periphery sun portion at quarter (2260) be explained above in the first kind of reflective graphics (2000) forms embodiment during asymmetric form, but can also provide periphery sun portion at quarter (2260) with symmetric shape in contrast.
Below, will illustrate according to the second embodiment in the various shapes of the reflective graphics (2200) of the embodiment of the present invention.
Figure 15 is the oblique view of the second embodiment of reflective graphics according to the embodiment of the present invention, Figure 16 is the sectional view of the second embodiment of reflective graphics according to the embodiment of the present invention, and Figure 17 is the planimetric map of the second embodiment of reflective graphics according to the embodiment of the present invention.
As shown in Figure 15 ~ 17, similar to the first kind according to the Second Type of the reflective graphics (2200) of the embodiment of the present invention, middle heart-yang portion at quarter (2220), cloudy portion at quarter (2240) and sun portion at quarter, periphery can be comprised.But, can sunk area be formed in the middle heart-yang portion at quarter (2220) in the Second Type of reflective graphics (2200).
As shown in figure 15, sunk area (2222) is formed at the center of middle heart-yang portion at quarter (2220).Sunk area (2222) is from reflective graphics (2200), highly have the center of the hemispherical middle heart-yang portion at quarter (2220) of increase carry out caving in towards reflecting surface (2040) and formed.
As shown in figure 16, when looking up from the side perpendicular to reflecting surface (2040), sunk area (2222) can form elliptical shape.But sunk area (2222) is not to form elliptical shape, as long as have the shape of major axis and minor axis, is just not particularly limited.Such as, sunk area (2222) can be formed as elliptical shape wrinkly or the various shapes of the shape with elongated hole cave etc.In addition, the major axis of sunk area (2222) can by the center of middle heart-yang portion at quarter (2220).Wherein, the major axis of sunk area (2222) can be parallel to the edge that array of source (1640) arranges.That is the major axis of sunk area (2222) can be parallel to incidence surface (2060).
In addition, as shown in figure 17, from the border of sunk area (2222), from reflective graphics (2200) center more close to, the degree of depth caved in is darker.Now, the minimum point of sunk area (2222) is positioned on the position higher than the basal plane of reflecting surface (2040).In addition, smooth plane can be formed at the center of sunk area (2222).
The effect of sunk area (2222) is, prevents the phenomenon that focusing occurs from reflective graphics (2200) to the light of the foveal reflex of reflective graphics (2200).
As mentioned above, the longer axis parallel of sunk area (2222) is in array of source (1640), thus middle heart-yang portion at quarter (2220) can be divided into the region close with incidence surface (2060) and the region away from incidence surface (2060) based on sunk area (2222).
Now, with compared with the close region (2222a) of incidence surface (2060), the region (2222b) away from incidence surface (2060) has relatively low height of projection.So, the region lower with middle heart-yang portion at quarter (2220) protrusions height, the region that peripheral sun portion (2260) protrusions height at quarter is higher can be positioned on identical direction based on reflective graphics (2200), by that analogy, the region higher with middle heart-yang portion at quarter (2220) protrusions height, the region that peripheral sun portion (2260) protrusions height at quarter is lower is positioned on identical direction.
Because the embodiment of the reflective graphics (2200) of above-mentioned explanation has anisotropy, Given this, can be arranged on the reflecting surface (2040) of light guide plate (2000).
Figure 18 is the figure arranged according to the reflective graphics of the embodiment of the present invention.
As shown in figure 18, reflecting surface (2040) can form multiple reflective graphics (2200).In reflective graphics (2200), higher, that ring thickness the is thicker region (2260a) of peripheral sun portion (2260) protrusions height at quarter is nearer with incidence surface (2060).
It is main that from array of source (1640) to light guide plate (2000), inner incident light can moving the direction in light face towards incidence surface (2060) side, and can mainly move to incidence surface (2060) from the light that reflective graphics (2200) enters, by the region (2260a) that the height arranging peripheral sun portion at quarter (2260) on the direction of this light is higher, thus make the light diffusion of peripheral sun portion at quarter (2260), the effect of scattering farthest played.
In the middle of reflective graphics (2200) distance in vertical direction (absolute value of height or height) of the described embodiment of the present invention, the maximum height of cloudy portion at quarter (2240) is maximum, middle heart-yang portion at quarter (2220) ranked second position, and the maximum height of peripheral sun portion at quarter (2260) is minimum.Particularly, the height of middle heart-yang portion at quarter (2220) is about 1.2 ~ 8 times of the height of peripheral sun portion at quarter (2260), and the degree of depth of cloudy portion at quarter (2240) is about 2 ~ 14 times of the height of peripheral sun portion at quarter (2260).In addition, when the sunk area (2222) of middle heart-yang portion at quarter (2220) is compared with periphery sun portion at quarter (2260), the height of the minimum point of sunk area (2222) is higher than the height of the peak of peripheral sun portion at quarter (2260).In addition, therefrom peak to the degree of depth caved in toward sunk area (2222) in heart-yang portion at quarter (2220) is about 0.8 ~ 5 times of peripheral sun portion at quarter (2260) height.
In addition, in reflective graphics (2200), middle heart-yang portion at quarter (2220) diameter accounts for about 60 ~ 85% of overall diameter, and the moon portion (2240) diameter at quarter accounts for about 80 ~ 98% of overall diameter, and peripheral sun portion (2260) diameter at quarter accounts for about 85 ~ 100% of overall diameter.In addition, in reflective graphics (2200), the area of sunk area (2222) accounts for about 20 ~ 40% of the area of middle heart-yang portion at quarter (2220), and the area in the region namely tilted inward in middle heart-yang portion at quarter (2220) accounts for about 20 ~ 40% of the area of middle heart-yang portion at quarter (2220).
According to an embodiment, by roller Sheet Metal Forming Technology, reflective graphics (2200) forms the maximum height with 1 ~ 7, (radius is the distance between position when highly reaching the height of the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to it to the diameter of 35 ~ 55, 2 times of i.e. this radius) middle heart-yang portion at quarter (2220), difference in height distance between cup depth in sunk area (2222) the i.e. peak in middle heart-yang portion at quarter (2220) and minimum point is about 0.3 ~ 4, there is the depth capacity of 2 ~ 13, the moon portion at quarter (2240) of the external diameter (2 times of the distance between position when highly reaching the height of the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to it) of 40 ~ 65 and have 0.5 ~ 5 maximum height, periphery sun portion at quarter (2260) of the external diameter (2 times of the distance between position when highly reaching the height of the basal plane of reflecting surface (2040) from the center of reflective graphics (2200) to it) of 40 ~ 70.
In addition, when reflective graphics (2200) is formed as curved surface, for the pitch angle of inclining of each several part, the pitch angle that cloudy portion at quarter (2240) connects the position of peripheral sun portion at quarter (2260) is maximum, the pitch angle that middle heart-yang portion at quarter (2220) connects the position of cloudy portion at quarter (2240) occupies the second, and the pitch angle that peripheral sun portion at quarter (2260) connects the position of reflecting surface (2040) is minimum.
In addition, in above-mentioned accompanying drawing, reflective graphics (2200) though surface be illustrated as smooth, but the surface of reflective graphics (2200) can have certain roughness.Especially, cloudy portion at quarter (2240) and periphery sun portion at quarter (2260) all have the roughness of certain value or more.
It is to be noted, however, that the size of above-mentioned reflective graphics (2200) can not be limited in above-mentioned height, the degree of depth, diameter, degree of tilt, roughness etc., can suitably change as required.
All reflective graphics (2200) on described reflecting surface (2040) can be formed size identical in fact, or as required with the difference at the position of reflecting surface (2040), the reflective graphics (2200) of different size can be formed.Such as, when all reflective graphics (2200) are formed same size, owing to there is advantage in technique, thus production cost etc. can be reduced.Example has in contrast to this, reflective graphics (2200) is adjusted to less with incidence surface (2060) its diameter nearlyer, thus can improves the brightness uniformity on the exiting surface (2020) of light guide plate (2000) on the whole.
As mentioned above, the preferred embodiments of the present invention are only and illustrate and disclosing of making, those skilled in the art can carry out various amendment, change and interpolation under the condition not departing from spirit of the present invention and scope, and this amendment, change and interpolation should be considered as falling in the scope of appended claim.

Claims (20)

1. a display, it comprises:
Display panel, it is to output image before display;
Array of source, its at least one edge along described display carries out arranging and is used for exporting light; With
Light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge,
Wherein, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate,
The middle heart-yang portion at quarter that described reflective graphics comprises rearwardly outer projection and formed, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed,
The height of projection in region adjacent with described edge in described peripheral sun portion at quarter is higher than other regions.
2. the display according to claims 1, is characterized in that, described array of source is arranged in the short edge of described display, and the height of projection in the sun portion at quarter, periphery in described reflective graphics can change along the long side direction of described display.
3. the display according to claims 1, is characterized in that, described array of source is arranged on the long edge of described display, and the height of projection in the sun portion at quarter, periphery in described reflective graphics can change along the short side direction of described display.
4. the display according to claims 1, is characterized in that, in described peripheral sun portion at quarter, from described edge, the height of projection in region is farthest less than the height of projection in other regions.
5. the display according to claims 1, is characterized in that, region adjacent with described edge from described peripheral sun portion at quarter, more far away from this region, and described peripheral positive quarter, the height of projection in portion can be less.
6. the display according to claims 1, it is characterized in that, when looking up from the side perpendicular to the back side, middle heart-yang portion at quarter in described reflective graphics is round-shaped, described cloudy quarter, portion was the annular shape around middle heart-yang portion at quarter, and described peripheral sun portion at quarter is the annular shape around portion at described cloudy quarter.
7. the display according to claims 6, is characterized in that, the thickness of the ring in other areas of Thickness Ratio of the ring in region adjacent with described edge in described peripheral sun portion at quarter is thicker.
8. the display according to claims 1, is characterized in that, the center in described middle heart-yang portion at quarter comprises the sunk area caved in inward.
9. the display according to claims 8, is characterized in that, described sunk area possesses the major axis with described sides aligned parallel.
10. the display according to claims 9, is characterized in that, centered by described sunk area, the height of projection in region close with described edge in middle heart-yang portion at quarter is higher than the height of projection away from the region at described edge.
11. displays according to claims 1, is characterized in that, in described reflecting surface, from described edge more away from, the density of reflective graphics is closeer.
12. displays according to claims 11, it is characterized in that, on the corner of the reflecting surface adjacent with described edge, the density of reflective graphics can be the closeest.
13. 1 kinds of displays, it comprises:
Display panel, it is to output image before display;
Array of source, its at least one edge along described display carries out arranging and is used for exporting light; With
Light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge;
Wherein, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate,
The middle heart-yang portion at quarter that described reflective graphics comprises rearwardly outer projection and formed, to carry out toward inside, the back side caving in around described middle heart-yang portion at quarter the moon portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed,
The height of projection in described peripheral sun portion at quarter can reduce gradually along the direction of described array of source irradiation light.
14. displays according to claims 13, is characterized in that, in described reflective graphics, described middle heart-yang portion at quarter is round-shaped, described cloudy quarter, portion was the annular shape around middle heart-yang portion at quarter, and described peripheral sun portion at quarter is the annular shape around portion at described cloudy quarter
Wherein, the thickness forming the ring of the shape in described peripheral sun portion at quarter can diminish gradually along the direction of described array of source output light.
15. 1 kinds of displays, it comprises:
Display panel, it is to output image before display;
Array of source, its at least one edge along described display carries out arranging and for exporting light; With
Light guide plate, it is positioned at the rear of described display panel, and makes from described array of source by the side of thirty years of age carrying out incident light by display panel described in directive above in opposite directions with described edge;
Wherein, the back side of described light guide plate possesses the reflective graphics for reflection ray before light guide plate,
The middle heart-yang portion at quarter that described reflective graphics comprises rearwardly outer projection and formed, to carry out toward inside, the back side caving in the moon portion at quarter formed around described middle heart-yang portion at quarter and described cloudy quarter portion the back side, lateral outer projection and the sun portion at quarter, periphery that formed,
Described peripheral sun portion at quarter has the mutually different region of its height of projection, and the highest region of height of projection can from the center of described reflective graphics vertically arranging along described display, to prevent the reduction at the horizontal visual angle of described display.
16. displays according to claims 15, it is characterized in that, the region that described peripheral sun portion's protrusions height at quarter is the highest is arranged at lower side from the center of described reflective graphics along described display upwards, to prevent the reduction at the visual angle in the direction, upside of described display.
17. displays according to claims 15, it is characterized in that, the lower side that described array of source is arranged at described display to edge on, to make light enter described reflective graphics by the region that height of projection is the highest, thus increase the light scattering degree according to described reflective graphics.
18. displays according to claims 15, it is characterized in that, in described display, described array of source be arranged in described display with from the center of described reflective graphics towards on the edge on identical direction, the direction in the highest region of described height of projection, to make light enter described reflective graphics by the region that height of projection is the highest, thus increase the light scattering degree according to described reflective graphics.
19. displays according to claims 15, is characterized in that, the minimum region of described peripheral lug boss protrusions height is arranged at from the center of described reflective graphics along the reflection direction in the highest region of described height of projection.
20. displays according to claims 15, it is characterized in that, vertical from the center of described reflective graphics along described display in described peripheral sun portion at quarter, the height of projection in region of thirty years of age is equal in fact in opposite directions, to improve the horizontal visual angle of described display.
CN201510506503.0A 2014-08-18 2015-08-18 A kind of display and its light guide plate Active CN105572963B (en)

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